A control method and device of an air conditioning system, the air conditioning system and a storage medium

Abstract

The application discloses a control method and device of an air conditioning system, the air conditioning system and a storage medium. The method comprises the following steps: after the operating frequency of a compressor reaches a preset target frequency and the operating time of the compressor reaches a preset target time, at least one of the opening degree of a second throttling device and the rotating speed of an outdoor fan is adjusted according to the temperature of a refrigerant heat dissipation module, the indoor environment temperature of the air conditioning system and a preset correction temperature range, so as to realize the adjustment of the outlet temperature of the refrigerant heat dissipation module. The preset control logic comprises at least one of the following: a first control logic, a second control logic, a third control logic, a fourth control logic, a fifth control logic and a sixth control logic. According to the scheme, the temperature of the refrigerant heat dissipation module is adjusted by combining the refrigerant flow and the rotating speed of the outdoor fan, so that the condensed water generated by the refrigerant heat dissipation module is avoided, and the safety of the controller is improved.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning system technology, specifically relating to a control method, device, air conditioning system and storage medium for an air conditioning system, and particularly to an outdoor fan control method, device, air conditioning system and storage medium for an air conditioning system with a refrigerant heat dissipation module. Background Technology

[0002] Refrigerant cooling is increasingly used in air conditioning systems due to its superior heat dissipation performance and lower cost compared to air cooling. In related solutions, the refrigerant cooling module primarily cools the IPM module on the mainboard of the air conditioning system controller. Because the refrigerant cooling module is attached to the controller's mainboard, when the air conditioning system is operating at low temperatures (e.g., below 0°C), the refrigerant temperature passing through the cooling module can drop below 0°C, easily causing the module to become too cold and resulting in condensation, which can easily damage the controller.

[0003] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a control method, device, air conditioning system, and storage medium for an air conditioning system. This addresses the problem that when the IPM module in the main board of the air conditioning system controller uses a refrigerant cooling module for refrigerant cooling, the refrigerant temperature passing through the cooling module is below 0°C during low-temperature cooling (e.g., below 0°C). This can easily cause condensation on the cooling module, potentially damaging the controller and affecting safety. The invention aims to improve the safety of the controller by adjusting the temperature of the cooling module when it is below the indoor dew point temperature, in conjunction with the refrigerant flow rate and the outdoor fan speed.

[0005] This invention provides a control method for an air conditioning system, wherein the air conditioning system includes: an indoor unit and an outdoor unit; the outdoor unit includes: an outdoor heat exchanger and an outdoor fan; the indoor unit includes: an indoor heat exchanger and an indoor fan, a compressor, a four-way valve, a first throttling device, a second throttling device, a refrigerant heat dissipation device, and a controller; wherein, the exhaust port of the compressor, after passing through the first and second valve ports of the four-way valve, the outdoor heat exchanger, the second throttling device, the refrigerant heat dissipation module, the first throttling device, and the indoor heat exchanger, is connected to the fourth valve port of the four-way valve; the third valve port of the four-way valve returns to the intake port of the compressor; the controller is used to control the outdoor unit and the indoor unit; the refrigerant heat dissipation device is used to dissipate refrigerant heat from the controller; the control method of the air conditioning system includes: when the air conditioning system is turned on and running, after the compressor's operating frequency has reached a preset target frequency and the compressor's operating time has reached a preset target time, acquiring the temperature of the refrigerant heat dissipation module, and acquiring the indoor ambient temperature of the air conditioning system; according to The temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range are used to execute preset control logic to adjust at least one of the opening degree of the second throttling device and the rotation speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The preset control logic includes at least one of the following: a first control logic, a second control logic, a third control logic, a fourth control logic, a fifth control logic, and a sixth control logic. Executing the preset control logic includes executing at least one of the following: executing the first control logic, i.e., controlling the opening degree of the second throttling device to increase; executing the second control logic, i.e., controlling the rotation speed of the outdoor fan to decrease; executing the third control logic, i.e., controlling the outdoor fan to reverse; executing the fourth control logic, i.e., controlling the rotation speed of the outdoor fan to increase; executing the fifth control logic, i.e., controlling the rotation speed of the outdoor fan to further increase; and executing the sixth control logic, i.e., controlling the opening degree of the second throttling device to decrease.

[0006] In some embodiments, the preset correction temperature range includes: a first correction temperature and a second correction temperature, wherein the second correction temperature is greater than the first correction temperature; based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and the preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan to achieve adjustment of the outlet temperature of the refrigerant heat dissipation module, including: determining whether the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature; if it is determined that the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then the first control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature.

[0007] In some embodiments, the preset correction temperature range further includes: a third correction temperature; and executing preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and the preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan to adjust the outlet temperature of the refrigerant heat dissipation module, further including: if the execution time of the first control logic has reached a preset execution time, determining whether the following conditions are met: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, or the temperature of the refrigerant heat dissipation module is less than the temperature of the air conditioning system... The sum of the indoor ambient temperature and the third corrected temperature; the third corrected temperature is greater than the first corrected temperature; if the execution time of the first control logic has reached the preset execution time, and it is determined that: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature, then the second control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed.

[0008] In some embodiments, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the rotation speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. This further includes: after executing the second control logic, determining whether the following conditions are met: the forward rotation speed of the outdoor fan reaches the lower limit of a preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature; after executing the second control logic, if it is determined that the forward rotation speed of the outdoor fan reaches the lower limit of a preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then the third control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, or until the reverse rotation speed of the outdoor fan reaches the lower limit of a preset reverse rotation speed range.

[0009] In some embodiments, the preset correction temperature range further includes: a fourth correction temperature;

[0010] Based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the rotational speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The method further includes: if, after the preset execution time for executing the first control logic has elapsed, it is determined that either the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third correction temperature, then it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; after executing the second control logic, if it is determined that either the rotational speed of the outdoor fan reaches the lower limit of the preset forward rotational speed, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. After executing the third control logic, determine whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. If it is determined that the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then determine whether the third control logic has been executed: if so, execute the fourth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the outdoor fan reverses to the upper limit of the preset reverse operation speed range; otherwise, determine whether the second control logic has been executed: if so, execute the fifth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the outdoor fan reverses to the speed at which the outdoor fan was rotating forward before the second control logic was executed; otherwise, determine whether the first control logic has been executed: if so, execute the sixth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

[0011] In some implementations, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the rotation speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. This further includes: after executing the fourth control logic, determining whether the following conditions are met: the rotation speed of the outdoor fan in reverse rotation has reached the rotation speed when the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; if it is determined that the following conditions are met: the rotation speed of the outdoor fan in reverse rotation has reached the rotation speed when the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the fifth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotation speed of the outdoor fan in reverse rotation reaches the rotation speed of the outdoor fan before the execution of the second control logic.

[0012] In some implementations, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the rotation speed of the outdoor fan, thereby adjusting the outlet temperature of the refrigerant heat dissipation module. This further includes: after executing the fifth control logic, determining whether the following conditions are met: the rotation speed of the outdoor fan in reverse rotation has reached the rotation speed of the outdoor fan in forward rotation before the execution of the second control logic, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; if it is determined that the rotation speed of the outdoor fan in reverse rotation has reached the rotation speed of the outdoor fan in forward rotation before the execution of the second control logic, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the sixth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

[0013] In some embodiments, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan to achieve adjustment of the outlet temperature of the refrigerant heat dissipation module. The method further includes: if neither the second nor the third control logic has been executed, but the first control logic has been executed, and the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the air conditioning system is controlled to maintain its current state.

[0014] In some implementations, executing the first control logic, i.e., the logic for controlling the increase of the opening degree of the second throttling device, includes: adjusting the opening degree of the second throttling device at a rate of increasing the first preset opening degree at first preset time intervals until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second preset correction temperature; wherein, the first preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range; and / or, executing the second control logic, i.e., controlling the outdoor... The logic for reducing the forward rotation speed of the outdoor fan includes: adjusting the forward rotation speed of the outdoor fan at a rate that decreases by a first preset speed every second preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed; wherein, the first preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature falls within a preset temperature range; and / or, executing the third control logic, that is, controlling the outdoor fan... The logic for fan reversal includes: controlling the outdoor fan to reverse at a preset initial speed, then adjusting the speed of the outdoor fan reversal at a rate that decreases by a second preset speed every third preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the speed of the outdoor fan reversal reaches the lower limit of a preset reversal operating speed range; wherein, the second preset speed is determined based on the temperature range within which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature falls within a preset temperature range; and / or, The execution of the fourth control logic, namely, the logic for increasing the speed of the outdoor fan in reverse rotation, includes: adjusting the speed of the outdoor fan in reverse rotation at a rate that increases by a third preset speed every fourth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse rotation reaches the upper limit of the preset reverse operation speed range; wherein, the third preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range;And / or, execute the fifth control logic, namely, the logic to further increase the speed of the outdoor fan in reverse rotation, including: adjusting the speed of the outdoor fan in reverse rotation at a rate of increasing the fourth preset speed every fifth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse rotation reaches the speed of the outdoor fan in forward rotation before the execution of the second control logic; wherein, the fourth preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within a preset temperature range; and / or, execute the sixth control logic, namely, the logic to decrease the opening degree of the second throttling device, including: adjusting the opening degree of the second throttling device at a rate of decreasing the second preset opening degree every third preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; the second preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within a preset temperature range.

[0015] In conjunction with the above method, another aspect of the present invention provides a control device for an air conditioning system, the air conditioning system comprising: an indoor unit and an outdoor unit; the outdoor unit comprising: an outdoor heat exchanger and an outdoor fan; the indoor unit comprising: an indoor heat exchanger and an indoor fan, a compressor, a four-way valve, a first throttling device, a second throttling device, a refrigerant heat dissipation device, and a controller; wherein, the exhaust port of the compressor, after passing through the first and second valve ports of the four-way valve, the outdoor heat exchanger, the second throttling device, the refrigerant heat dissipation module, the first throttling device, and the indoor heat exchanger, is connected to... The air conditioning system is connected to the fourth port of the four-way valve; the third port of the four-way valve returns to the suction port of the compressor; the controller is used to control the outdoor unit and the indoor unit; the refrigerant cooling device is used to cool the controller; the control device of the air conditioning system includes: an acquisition unit configured to, when the air conditioning system is turned on and running, acquire the temperature of the refrigerant cooling module and the indoor ambient temperature of the air conditioning system after the compressor's operating frequency has reached a preset target frequency and the compressor's operating time has reached a preset target time. The control unit is configured to execute preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, to adjust at least one of the opening degree of the second throttling device and the rotation speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module; wherein the preset control logic includes at least one of the following: a first control logic, a second control logic, a third control logic, a fourth control logic, a fifth control logic, and a sixth control logic; the control unit executes the preset control logic including executing at least one of the following: executing the first control logic, i.e., controlling the opening degree of the second throttling device to increase; executing the second control logic, i.e., controlling the rotation speed of the outdoor fan to decrease when rotating forward; executing the third control logic, i.e., controlling the outdoor fan to rotate in reverse; executing the fourth control logic, i.e., controlling the rotation speed of the outdoor fan to increase when rotating in reverse; executing the fifth control logic, i.e., controlling the rotation speed of the outdoor fan to further increase when rotating in reverse; executing the sixth control logic, i.e., controlling the opening degree of the second throttling device to decrease.

[0016] In some embodiments, the preset correction temperature range includes: a first correction temperature and a second correction temperature, wherein the second correction temperature is greater than the first correction temperature; the control unit executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and the preset correction temperature range, to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby adjusting the outlet temperature of the refrigerant heat dissipation module, including: determining whether the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature; if it is determined that the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then executing the first control logic until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature.

[0017] In some embodiments, the preset correction temperature range further includes: a third correction temperature;

[0018] The control unit executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the rotation speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit further includes: if the execution time of the first control logic has reached a preset execution time, determining whether the following conditions are met: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third correction temperature; the third correction temperature is greater than the first correction temperature; if, after the execution time of the first control logic has reached the preset execution time, it is determined that the following conditions are met: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third correction temperature, then the second control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and the rotation speed of the outdoor fan reaches the lower limit of a preset forward rotation speed.

[0019] In some embodiments, the control unit executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the rotation speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit further includes: after executing the second control logic, determining whether the following conditions are met: the forward rotation speed of the outdoor fan reaches the lower limit of a preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature; after executing the second control logic, if it is determined that the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then the third control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, or until the reverse rotation speed of the outdoor fan reaches the lower limit of a preset reverse rotation speed range.

[0020] In some embodiments, the preset correction temperature range further includes a fourth correction temperature; the control unit executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and the preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan to achieve adjustment of the outlet temperature of the refrigerant heat dissipation module, further including: if the execution time of the first control logic has reached a preset execution time, and it is determined that the following conditions are not met: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third correction temperature, then it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; after executing the second control logic, if it is determined that the following conditions are not met: the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. The system calculates the sum of the indoor ambient temperature and the fourth corrected temperature. After executing the third control logic, it determines whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth corrected temperature of the air conditioning system. If the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth corrected temperature of the air conditioning system, it determines whether the third control logic has been executed. If yes, it executes the fourth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the fourth corrected temperature of the air conditioning system, or until the outdoor fan reverses to the upper limit of the preset reverse operation speed range. Otherwise, it determines whether the second control logic has been executed. If yes, it executes the fifth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the fourth corrected temperature of the air conditioning system, or until the outdoor fan reverses to the speed at which the outdoor fan was rotating forward before the second control logic was executed. Otherwise, it determines whether the first control logic has been executed. If yes, it executes the sixth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the fourth corrected temperature of the air conditioning system.

[0021] In some embodiments, the control unit executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit further includes: after executing the fourth control logic, determining whether the following conditions are met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; if it is determined that the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the fifth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed at which the outdoor fan reverses reaches the speed at which the outdoor fan rotates forward before the execution of the second control logic.

[0022] In some embodiments, the control unit executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the rotation speed of the outdoor fan, thereby adjusting the outlet temperature of the refrigerant heat dissipation module. The control unit further includes: after executing the fifth control logic, determining whether the following conditions are met: the rotation speed of the outdoor fan in reverse rotation has reached the rotation speed of the outdoor fan in forward rotation before the execution of the second control logic, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; if it is determined that the rotation speed of the outdoor fan in reverse rotation has reached the rotation speed of the outdoor fan in forward rotation before the execution of the second control logic, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then executing the sixth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

[0023] In some embodiments, the control unit executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby adjusting the outlet temperature of the refrigerant heat dissipation module. The control unit further includes: if neither the second nor the third control logic has been executed, but the first control logic has been executed, and the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the control unit maintains the current state of the air conditioning system.

[0024] In some embodiments, the control unit executes the first control logic, namely, the logic for controlling the increase of the opening degree of the second throttling device, including: adjusting the opening degree of the second throttling device at a rate of increasing the first preset opening degree at first preset time intervals until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second preset correction temperature; wherein, the first preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range; and / or, the control unit executes the second control logic. That is, the logic for controlling the reduction of the forward rotation speed of the outdoor fan includes: adjusting the forward rotation speed of the outdoor fan at a rate of decreasing the first preset speed every second preset time interval until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed; wherein, the first preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; and / or, the control unit executes the third control... The logic, specifically the logic for controlling the outdoor fan to reverse, includes: controlling the outdoor fan to reverse at a preset initial speed, and then adjusting the speed of the outdoor fan to reverse at a rate that decreases by a second preset speed every third preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the speed of the outdoor fan to reverse reaches the lower limit of a preset reverse operating speed range; wherein, the second preset speed is determined based on the temperature range within which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature falls within a preset temperature range. The fourth control logic, namely, the logic for increasing the rotational speed of the outdoor fan in reverse, includes: adjusting the rotational speed of the outdoor fan in reverse at a rate that increases the third preset rotational speed every fourth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the upper limit of the preset reverse operation speed range; wherein, the third preset rotational speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range;And / or, execute the fifth control logic, namely, the logic to further increase the speed of the outdoor fan in reverse rotation, including: adjusting the speed of the outdoor fan in reverse rotation at a rate of increasing the fourth preset speed every fifth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse rotation reaches the speed of the outdoor fan in forward rotation before the execution of the second control logic; wherein, the fourth preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within a preset temperature range; and / or, execute the sixth control logic, namely, the logic to decrease the opening degree of the second throttling device, including: adjusting the opening degree of the second throttling device at a rate of decreasing the second preset opening degree every third preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; the second preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within a preset temperature range.

[0025] In conjunction with the above-described device, the present invention further provides an air conditioning system, comprising: the control device for the air conditioning system described above.

[0026] In conjunction with the above method, the present invention further provides a storage medium comprising a stored program, wherein, when the program is executed, the device on which the storage medium is located controls the execution of the control method of the air conditioning system described above.

[0027] Therefore, the solution of the present invention includes an outdoor heat exchanger and an outdoor fan installed on the outdoor unit side of the air conditioning system, and a compressor, a four-way valve, an indoor heat exchanger, a first throttling device (such as a first electronic expansion valve), a second throttling device (such as a second electronic expansion valve), and a refrigerant heat dissipation module installed on the indoor side of the air conditioning system. The refrigerant heat dissipation module is used to dissipate refrigerant heat from the controller of the air conditioning system. The compressor's exhaust port returns to the compressor's suction port after passing through the first and second ports of the four-way valve, the outdoor heat exchanger, the first throttling device (such as a first electronic expansion valve), the refrigerant heat dissipation module, the second throttling device (such as a second electronic expansion valve), the fourth and third ports of the four-way valve. After the air conditioning system starts operating, the compressor's operating frequency reaches the target... After a preset period of stable operation, the temperature of the refrigerant heat dissipation module is monitored. When the temperature of the refrigerant heat dissipation module is detected to be lower than the indoor dew point temperature, it can be adjusted by first adjusting the opening of the second throttling device (such as the second electronic expansion valve). When the adjustment effect of the opening of the second throttling device (such as the second electronic expansion valve) is not obvious, the speed of the outdoor fan is reduced. When the speed of the outdoor fan is reduced to the lower limit speed, the fan can be reversed to prevent condensation from occurring on the refrigerant heat dissipation module under extremely low temperature conditions. Thus, by adjusting the temperature of the refrigerant heat dissipation module in combination with the refrigerant flow rate and the outdoor fan speed when the temperature of the refrigerant heat dissipation module is lower than the indoor dew point temperature, condensation on the refrigerant heat dissipation module is avoided, which helps to improve the safety of the controller.

[0028] Specifically, in the solution of this invention, when the detected temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the first correction temperature, the first preset control logic is executed, i.e., the opening of the second throttling device is increased, until the detected temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the second correction temperature; if, after the execution of the first preset control logic reaches a preset time, the detected temperature of the refrigerant heat dissipation module is still less than the sum of the indoor ambient temperature and the first correction temperature, or the detected temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the third correction temperature, then the second preset control logic is executed, i.e., the speed of the outdoor fan is reduced, until the detected temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the third correction temperature. The outdoor fan speed is controlled to reverse if the temperature is the sum of the indoor ambient temperature and the second correction temperature, or until the detected outdoor fan speed reaches the lower limit of the preset operating speed range. If the detected outdoor fan speed reaches the lower limit of the preset operating speed range, but the detected refrigerant heat dissipation module temperature is still lower than the sum of the indoor ambient temperature and the first correction temperature, then the third preset control logic is executed, i.e., the outdoor fan is controlled to reverse. If the detected refrigerant heat dissipation module temperature is higher than the sum of the indoor ambient temperature and the fourth correction temperature: if the third preset control logic has already been executed, then the fourth preset control logic is executed, i.e., the outdoor fan speed is increased to reverse. Afterwards, if the outdoor fan speed has reached the speed required for forward control, then... If the temperature of the refrigerant heat dissipation module is detected to be greater than the sum of the indoor ambient temperature and the fourth correction temperature, the fifth preset control logic is executed, which increases the speed of the outdoor fan again. If, after executing the fifth preset control logic, the speed of the outdoor fan has reached the speed before executing the second preset control logic, and the detected temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature, then the sixth preset control logic is executed, which decreases the opening of the second throttling element until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the fourth correction temperature. If the third preset control logic has not been executed, then the second preset control logic is executed. After executing the second preset control logic, if the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature, then the sixth preset control logic is executed, which decreases the opening of the second throttling element until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the fourth correction temperature. If the sum of the temperature and the fourth correction temperature is reached, the fifth preset control logic is executed; if neither the third nor the second preset control logic has been executed, the first preset control logic is executed. If the sum is greater than the sum of the indoor ambient temperature and the fourth correction temperature, the sixth preset control logic is executed; if neither the third nor the second preset control logic has been executed, but the first preset control logic has been executed, then if the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature and the second correction temperature and less than or equal to the sum of the indoor ambient temperature and the fourth correction temperature, the current state remains unchanged, which can prevent condensation from occurring on the refrigerant heat dissipation module under extremely low temperatures.Therefore, by adjusting the temperature of the refrigerant heat dissipation module when its temperature is lower than the indoor dew point temperature, combined with the refrigerant flow rate and outdoor fan speed, condensation on the refrigerant heat dissipation module can be avoided, thus improving the safety of the controller.

[0029] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0030] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0031] Figure 1 This is a flowchart illustrating an embodiment of the control method for an air conditioning system according to the present invention;

[0032] Figure 2 This is a flowchart illustrating an embodiment of the method of the present invention for determining the execution timing of the first control logic;

[0033] Figure 3 This is a flowchart illustrating an embodiment of the method of the present invention for determining the execution timing of the second control logic;

[0034] Figure 4 This is a flowchart illustrating an embodiment of the method of the present invention for determining the execution timing of the third control logic;

[0035] Figure 5 This is a flowchart illustrating an embodiment of the method of the present invention for determining the execution timing of the fourth control logic, the fifth control logic, and the sixth control logic;

[0036] Figure 6 This is a flowchart illustrating an embodiment of the control following the execution of the fourth control logic in the method of the present invention;

[0037] Figure 7 This is a flowchart illustrating an embodiment of the control following the execution of the fifth control logic in the method of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of a control device for an air conditioning system according to an embodiment of the present invention;

[0039] Figure 9 This is a schematic diagram of an embodiment of an air conditioning system with a refrigerant heat dissipation module;

[0040] Figure 10 This is a flowchart illustrating an embodiment of an outdoor fan control method for an air conditioning system with a refrigerant heat dissipation module.

[0041] Referring to the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0042] 102 - Acquisition unit; 104 - Control unit. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0044] The existing solutions use refrigerant bypass or fan on / off to increase refrigerant temperature. However, refrigerant bypass requires additional piping and control valves, while fan on / off causes the refrigerant system of the air conditioning system to fluctuate continuously. Therefore, a new solution is needed to address the problem of condensation that easily occurs when the refrigerant heat dissipation module dissipates refrigerant under low-temperature cooling conditions.

[0045] In some solutions, the IPM module in the air conditioning system is located on the main board of the outdoor unit controller and is cooled by air through the outdoor fan. However, the air conditioning system targeted by the present invention integrates the indoor and outdoor unit controllers and places them in the indoor unit, so air cooling cannot be used. Therefore, a refrigerant cooling module is used for refrigerant cooling.

[0046] Therefore, the present invention proposes a control method for an air conditioning system, specifically an outdoor fan control method for an air conditioning system with a refrigerant heat dissipation module. Based on fan control technology, the condenser outlet temperature is controlled under different conditions, avoiding the situation where the refrigerant heat dissipation module is prone to condensation and damage to the controller under low-temperature cooling conditions, thereby improving the reliability of the air conditioning system.

[0047] According to embodiments of the present invention, a control method for an air conditioning system is provided, such as... Figure 1The diagram shows a flowchart of an embodiment of the method of the present invention. The air conditioning system includes an indoor unit and an outdoor unit; the outdoor unit includes an outdoor heat exchanger and an outdoor fan; the indoor unit includes an indoor heat exchanger and an indoor fan, a compressor, a four-way valve, a first throttling device, a second throttling device, a refrigerant cooling device, and a controller; wherein, the exhaust port of the compressor, after passing through the first and second valve ports of the four-way valve, the outdoor heat exchanger, the second throttling device, the refrigerant cooling module, the first throttling device, and the indoor heat exchanger, is connected to the fourth valve port of the four-way valve; the third valve port of the four-way valve returns to the suction port of the compressor; the controller is used to control the outdoor unit and the indoor unit; the refrigerant cooling device is used to cool the controller with refrigerant. The first throttling device is such as an electronic expansion valve 1, and the second throttling device is such as an electronic expansion valve 2. Specifically, Figure 9 This is a schematic diagram of an embodiment of an air conditioning system with a refrigerant heat dissipation module. Some designs use air conditioning systems without a refrigerant heat dissipation module, while the air conditioning system addressed in this invention has a refrigerant heat dissipation module. For example... Figure 9 The air conditioning system shown includes an outdoor unit and an indoor unit. On the indoor unit side, there is a compressor, a four-way valve, a gas-liquid separator, an indoor heat exchanger and an indoor fan, a refrigerant heat dissipation module, an electronic expansion valve 1, and an electronic expansion valve 2. On the outdoor unit side, there is an outdoor heat exchanger and an outdoor fan. A first shut-off valve and a second shut-off valve are installed between the indoor and outdoor units. The compressor's discharge port is connected to the first port of the four-way valve. The second port of the four-way valve, after passing through the second shut-off valve, the outdoor heat exchanger, the first shut-off valve, electronic expansion valve 1, the refrigerant heat dissipation module, electronic expansion valve 2, and the indoor heat exchanger, returns to the fourth port of the four-way valve. The third port of the four-way valve, after passing through the gas-liquid separator, returns to the compressor's suction port.

[0048] like Figure 9As shown, after the refrigerant is discharged from the compressor, it condenses in the condenser (i.e., the outdoor heat exchanger), then passes through the first throttling device (i.e., electronic expansion valve 1) and is introduced into the refrigerant heat dissipation module of the controller to dissipate heat from the controller. After passing through the second throttling device (i.e., electronic expansion valve 2), it enters the evaporator (i.e., the indoor heat exchanger) for evaporation, and finally flows back into the compressor to enter the next cycle. In low-temperature cooling conditions of the air conditioning system, the temperature of the refrigerant after condensation in the condenser (i.e., the outdoor heat exchanger) is generally 3-5°C higher than the ambient temperature. Even if the first throttling device (i.e., electronic expansion valve 1) is adjusted to the maximum flow rate, the temperature of the refrigerant heat dissipation module is only 3-5°C higher than the outdoor ambient temperature. The ambient temperature used by the equipment is generally 25-35°C. Therefore, in low-temperature environments, especially below 0°C, the refrigerant heat dissipation module is highly susceptible to condensation due to the low refrigerant temperature, which can cause condensation on the surface of the module and burn out the controller's mainboard. On the other hand, in low-temperature cooling conditions of the air conditioning system, since the compressor operating frequency is generally not high and the heat generated by the controller is also not high, the temperature of the refrigerant heat dissipation module is generally not high. In this case, the temperature of the refrigerant heat dissipation module drops relatively low after being cooled by the refrigerant. The control method of the air conditioning system includes steps S110 to S120.

[0049] In step S110, when the air conditioning system is turned on and running, after the compressor's operating frequency has reached a preset target frequency and the compressor's operating time has reached a preset target time, the temperature of the refrigerant heat dissipation module is acquired, and the indoor ambient temperature of the air conditioning system is acquired. The preset target time is, for example, time t0, and the temperature of the refrigerant heat dissipation module is, for example, the temperature T of the refrigerant heat dissipation module. 散 The indoor ambient temperature of the air conditioning system is, for example, indoor ambient temperature T. 内环 .

[0050] In step S120, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module and preventing condensation from forming on the refrigerant heat dissipation module.

[0051] The preset control logic includes at least one of the following: a first control logic, a second control logic, a third control logic, a fourth control logic, a fifth control logic, and a sixth control logic; the first control logic is as preset control logic S1, the second control logic is as preset control logic S2, the third control logic is as preset control logic S3, the fourth control logic is as preset control logic S4, the fifth control logic is as preset control logic S5, and the sixth control logic is as preset control logic S6.

[0052] The execution of the preset control logic includes executing at least one of the following: executing the first control logic, i.e., the logic of increasing the opening degree of the second throttling device; executing the second control logic, i.e., the logic of decreasing the forward rotation speed of the outdoor fan; executing the third control logic, i.e., the logic of controlling the reverse rotation of the outdoor fan; executing the fourth control logic, i.e., the logic of increasing the reverse rotation speed of the outdoor fan; executing the fifth control logic, i.e., the logic of further increasing the reverse rotation speed of the outdoor fan; and executing the sixth control logic, i.e., the logic of decreasing the opening degree of the second throttling device.

[0053] The outdoor fan control method for an air conditioning system with a refrigerant heat dissipation module proposed in this invention can solve the problem of condensation easily occurring when the refrigerant heat dissipation module dissipates refrigerant under low-temperature cooling conditions. Specifically, when the temperature of the refrigerant heat dissipation module is detected to be lower than the indoor dew point temperature, adjustment can be made first by adjusting the opening of the electronic expansion valve 2. When the adjustment effect of the electronic expansion valve 2 is not obvious, the speed of the outdoor fan can be reduced. When the speed of the outdoor fan is reduced to the lower limit speed, it can be achieved by reversing the fan. This also avoids the problems of system vibration and reduced motor reliability caused by fan start-stop. In this way, based on fan control technology, the condenser outlet temperature (i.e., the refrigerant temperature at the outlet of the outdoor unit heat exchanger) of the air conditioning system can be controlled under different conditions, avoiding the situation where condensation easily occurs on the refrigerant heat dissipation module under low-temperature cooling conditions, which can easily damage the controller, thus improving the reliability of the air conditioning system. In the case of low-temperature cooling in air conditioning systems, the solution of this invention solves the problem of condensation on the refrigerant heat dissipation module without increasing costs. Compared with the method of starting and stopping the fan, it can improve the operational reliability of the air conditioning system and broaden the application range of the refrigerant heat dissipation module.

[0054] In some embodiments, the preset correction temperature range includes: a first correction temperature and a second correction temperature, wherein the second correction temperature is greater than the first correction temperature. The first correction temperature is such as correction temperature T1, the second correction temperature is such as correction temperature T2, and the third correction temperature is such as correction temperature T3.

[0055] The specific process of adjusting the outlet temperature of the refrigerant heat dissipation module by executing preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and the preset correction temperature range in step S120 includes: the process of determining the execution timing of the first control logic.

[0056] The following is combined with Figure 2The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for determining the execution timing of the first control logic. The specific process of determining the execution timing of the first control logic in step S120 is further explained, including steps S210 to S220.

[0057] Step S210: Determine whether the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature.

[0058] Step S220: If it is determined that the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, then the first control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature. Of course, if it is determined that the temperature of the refrigerant heat dissipation module is greater than or equal to the indoor ambient temperature of the air conditioning system and the first corrected temperature, then the preset control logic ends.

[0059] Specifically, Figure 10 This is a schematic flowchart illustrating an embodiment of an outdoor fan control method for an air conditioning system with a refrigerant heat dissipation module. Figure 10 As shown, the outdoor fan control method of an air conditioning system with a refrigerant heat dissipation module proposed in this invention includes:

[0060] Step 1: After the air conditioning system starts running and the compressor reaches the target frequency and runs stably for time t0 (t0 is recommended to be 10 minutes), proceed to Step 2 to begin detecting the temperature T of the refrigerant heat dissipation module. 散 .

[0061] Step 2: Detect the temperature T of the refrigerant heat dissipation module. 散 When the temperature T of the refrigerant heat dissipation module is detected 散 <Indoor ambient temperature T 内环 When the temperature correction temperature T1 (T1 is recommended to be 0℃) is reached, the preset control logic S1 is executed until the temperature of the refrigerant heat dissipation module reaches T. 散 >Indoor ambient temperature T 内环 + Correction temperature T2 (T2 is recommended to be 3℃).

[0062] In some embodiments, the preset correction temperature range further includes: a third correction temperature; the third correction temperature is such as correction temperature T3.

[0063] The specific process of adjusting the outlet temperature of the refrigerant heat dissipation module by executing preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and the preset correction temperature range in step S120, and adjusting at least one of the opening degree of the second throttling device and the speed of the outdoor fan, further includes: the process of determining the execution timing of the second control logic.

[0064] The following is combined with Figure 3 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for determining the execution timing of the second control logic. The specific process of determining the execution timing of the second control logic in step S120 is further explained, including steps S310 to S320.

[0065] Step S310: If the execution time of the first control logic has reached the preset execution time, determine whether the following conditions are met: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature; the third corrected temperature is greater than the first corrected temperature.

[0066] Step S320: If the execution time of the first control logic has reached the preset execution time, and it is determined that: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature, then the second control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed. Wherein, the lower limit of the preset forward rotation speed is, for example, the lower limit of the operable speed R. min .

[0067] Specifically, such as Figure 10 As shown, the outdoor fan control method of an air conditioning system with a refrigerant heat dissipation module proposed in this invention further includes: in step 2, if the execution time of the preset control logic S1 reaches time t (t is recommended to be 3 minutes), the temperature T of the refrigerant heat dissipation module is still satisfied. 散 <Indoor ambient temperature T 内环 + Correct temperature T1, or detect the temperature T of the refrigerant heat dissipation module. 散 <Indoor ambient temperature T 内环 If the temperature is corrected to T3 (T3 is recommended to be T1+3℃), then the preset control logic S2 will be executed until the temperature of the refrigerant heat dissipation module is T. 散 >Indoor ambient temperature T 内环+ Correct the temperature T2, or the outdoor fan speed R. k Reaching the lower limit of the operating speed R min .

[0068] In some embodiments, step S120, which involves executing preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan to achieve the adjustment of the outlet temperature of the refrigerant heat dissipation module, further includes the process of determining the timing of the execution of the third control logic.

[0069] The following is combined with Figure 4 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for determining the execution timing of the third control logic. The specific process of determining the execution timing of the third control logic in step S120 is further explained, including steps S410 to S420.

[0070] Step S410: After executing the second control logic, determine whether the following conditions are met: the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature.

[0071] Step S420: After executing the second control logic, if it is determined that: the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward operating speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, then the third control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the reverse rotation speed of the outdoor fan reaches the lower limit of the preset reverse operating speed range. Wherein, the lower limit of the preset reverse operating speed range is, for example, the lower limit speed R for reverse operation. fmin .

[0072] Specifically, such as Figure 10 As shown, the outdoor fan control method of the air conditioning system with a refrigerant heat dissipation module proposed in this invention further includes: in step 2, after executing the preset control logic S2, when the outdoor fan speed R is detected... k The lower limit speed R of operation has been reached. min And the temperature T of the refrigerant heat dissipation module 散 <Indoor ambient temperature T 内环 If the temperature T1 is corrected, the preset control logic S3 will be executed until the temperature T of the refrigerant heat dissipation module is reached. 散 >Indoor ambient temperature T 内环+ Correct temperature T2 or outdoor fan speed R k The lower limit speed R for reversible operation fmin .

[0073] In some embodiments, the preset correction temperature range further includes: a fourth correction temperature; the fourth correction temperature is such as correction temperature T4.

[0074] The specific process of adjusting the outlet temperature of the refrigerant heat dissipation module by executing preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and the preset correction temperature range in step S120, and adjusting at least one of the opening degree of the second throttling device and the speed of the outdoor fan, further includes: the process of determining the execution timing of the fourth control logic, the fifth control logic, and the sixth control logic.

[0075] The following is combined with Figure 5 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for determining the execution timing of the fourth control logic, the fifth control logic and the sixth control logic. It further illustrates the specific process of determining the execution timing of the fourth control logic, the fifth control logic and the sixth control logic in step S120, including steps S510 to S560.

[0076] Step S510: If the execution time of the first control logic has reached the preset execution time, and it is determined that the following conditions are not met: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature, then it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth corrected temperature.

[0077] Step S520: After executing the second control logic, if it is determined that the following conditions are not met: the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

[0078] Step S530: After executing the third control logic, determine whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

[0079] Step S540: If it is determined that the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then determine whether the third control logic has been executed:

[0080] Step S550: If yes, then execute the fourth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth corrected temperature, or until the outdoor fan's reverse rotation speed reaches the upper limit of the preset reverse operation speed range. Wherein, the upper limit of the preset reverse operation speed range is, for example, the upper limit speed R during reverse operation. kf .

[0081] Step S560: Otherwise, determine whether the second control logic has been executed: if yes, execute the fifth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the outdoor fan's reverse rotation speed reaches the outdoor fan's forward rotation speed before the second control logic was executed; otherwise, determine whether the first control logic has been executed: if yes, execute the sixth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, otherwise end the execution of the preset control logic. Of course, if it is determined that the temperature of the refrigerant heat dissipation module is not greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then end the execution of the preset control logic.

[0082] Specifically, such as Figure 10 As shown, the outdoor fan control method of the air conditioning system with a refrigerant heat dissipation module proposed in this invention further includes: in step 2, when executing the sum of preset control logic S3, if the temperature T of the refrigerant heat dissipation module is detected... 散 >Indoor ambient temperature T 内环 + Correct temperature T4 (T4 recommended 10℃), then: if the preset control logic S3 operation has been executed, then execute step 3, that is, execute the preset control logic S4; if the preset control logic S3 operation has not been executed, then execute step 4, that is, execute the preset control logic S2.

[0083] Step 3: In step 2, after detecting the temperature T of the refrigerant heat dissipation module... 散 >Indoor ambient temperature T 内环 If the temperature is corrected to T4 (T4 recommended 10℃), and the preset control logic S3 has been executed, then step 3 will be executed, i.e., the preset control logic S4 will be executed, until the temperature of the refrigerant heat dissipation module is T. 散 <Indoor ambient temperature T 内环 + Correct temperature T4, or outdoor fan speed R k Reaching the upper limit speed R during reverse operation kf .

[0084] Step 4: In step 2, after detecting the temperature T of the refrigerant heat dissipation module...散 >Indoor ambient temperature T 内环 If the temperature is corrected to T4 (T4 is recommended to be 10℃), and the preset control logic S3 has not been executed, then step 4 is executed, which is to execute the preset control logic S2.

[0085] After executing the preset control logic S2, when the temperature T of the refrigerant heat dissipation module... 散 >Indoor ambient temperature T 内环 If the temperature T4 is corrected, the preset control logic S5 will be executed.

[0086] In step 2, when the temperature T of the refrigerant heat dissipation module is detected... 散 >Indoor ambient temperature T 内环 + Corrected temperature T4 (T4 recommended 10℃), if preset control logic S2 and preset control logic S3 have not been executed, but preset control logic S1 has been executed, when the temperature T of the refrigerant heat dissipation module... 散 >Indoor ambient temperature T 内环 If the temperature T4 is corrected, the preset control logic S6 will be executed.

[0087] In some embodiments, step S120, which involves executing preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan to achieve the adjustment of the outlet temperature of the refrigerant heat dissipation module, further includes: the control process after executing the fourth control logic.

[0088] The following is combined with Figure 6 The flowchart shown is a schematic diagram of an embodiment of the control after the execution of the fourth control logic in the method of the present invention. It further illustrates the specific process of the control after the execution of the fourth control logic in step S120, including steps S610 to S620.

[0089] Step S610: After executing the fourth control logic, determine whether the following conditions are met: the rotational speed of the outdoor fan in reverse rotation has reached the rotational speed when the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

[0090] Step S620: If it is determined that the following conditions are met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the fifth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed at which the outdoor fan reverses reaches the speed at which the outdoor fan rotates forward before the second control logic is executed; of course, if it is determined that the following conditions are not met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the preset control logic is terminated.

[0091] Specifically, such as Figure 10 As shown, the outdoor fan control method of the air conditioning system with a refrigerant heat dissipation module proposed in this invention further includes: in step 3, if the preset control logic S4 is executed and the outdoor fan speed R... k The rotational speed has been reached to control forward rotation, and the temperature T of the refrigerant cooling module has also been detected. 散 >Indoor ambient temperature T 内环 If the temperature T4 is corrected, the preset control logic S5 will be executed until the temperature T of the refrigerant heat dissipation module is reached. 散 <Indoor ambient temperature T 内环 + Correct temperature T4, or outdoor fan speed R k The rotational speed R0 is reached.

[0092] In some embodiments, step S120, which involves executing preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan to achieve the adjustment of the outlet temperature of the refrigerant heat dissipation module, further includes the control process after executing the fifth control logic.

[0093] The following is combined with Figure 7 The flowchart shown is a schematic diagram of an embodiment of the control after the execution of the fifth control logic in the method of the present invention. It further illustrates the specific process of the control after the execution of the fifth control logic in step S120, including steps S710 to S720.

[0094] Step S710: After executing the fifth control logic, determine whether the following conditions are met: the rotational speed of the outdoor fan in reverse has reached the rotational speed of the outdoor fan in forward rotation before the execution of the second control logic, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

[0095] Step S720: If it is determined that the following conditions are met: the outdoor fan's reverse rotation speed has reached the speed when the outdoor fan was rotating forward before the second control logic was executed, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the sixth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. Of course, if it is determined that the following conditions are not met: the outdoor fan's reverse rotation speed has reached the speed when the outdoor fan was rotating forward before the second control logic was executed, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the preset control logic is terminated.

[0096] Specifically, such as Figure 10 As shown, the outdoor fan control method of an air conditioning system with a refrigerant heat dissipation module proposed in this invention further includes: if the preset control logic in S5 is executed and the speed of the outdoor fan has reached speed R0, the temperature T of the refrigerant heat dissipation module is also detected. 散 >Indoor ambient temperature T 内环 If the temperature T4 is corrected, the preset control logic S6 will be executed until the temperature T of the refrigerant heat dissipation module is reached. 散 <Indoor ambient temperature T 内环 + Corrected temperature T4.

[0097] In some embodiments, step S120 involves executing preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby adjusting the outlet temperature of the refrigerant heat dissipation module. The method further includes: if neither the second nor the third control logic has been executed, but the first control logic has been executed, and the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the air conditioning system is controlled to maintain its current state.

[0098] Specifically, such as Figure 10 As shown, the outdoor fan control method of an air conditioning system with a refrigerant heat dissipation module proposed in this invention further includes: in step 2, when the temperature T of the refrigerant heat dissipation module is detected... 散 >Indoor ambient temperature T 内环 + Corrected temperature T4 (T4 recommended 10℃), if preset control logic S2 and preset control logic S3 have not been executed, but preset control logic S1 has been executed, when the indoor ambient temperature T 内环+ Corrected temperature T4 ≥ Temperature of refrigerant cooling module T 散 ≥Indoor ambient temperature T 内环 + Correct temperature T2, maintain the current state unchanged.

[0099] In some implementations, the specific execution process of executing at least one of the first control logic, the second control logic, the third control logic, the fourth control logic, the fifth control logic, and the sixth control logic can be seen in the following exemplary description.

[0100] Executing the first control logic, i.e., the logic for controlling the increase of the opening degree of the second throttling device, includes: adjusting the opening degree of the second throttling device at a rate that increases the first preset opening degree at first preset time intervals until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second preset correction temperature; wherein, the first preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range; wherein, the first preset time is such as time t1, and the first preset opening degree is such as opening degree K. 21 step.

[0101] Specifically, the first control logic, i.e. the preset control logic S1, is executed as follows: increase the opening of the electronic expansion valve 2 by increasing the opening K every t1 time interval (t1 is recommended to be 30 seconds). 21 The rate of change adjusts the opening of the electronic expansion valve 2 until the temperature T of the refrigerant heat dissipation module reaches a certain level. 散 >Indoor ambient temperature T 内环 + Correction temperature T2 (T2 is recommended to be 3℃). Wherein, opening degree K... 21 It is recommended to select the parameters as shown in Table 1.

[0102] Table 1: Opening Degree K 21 Recommended parameter table

[0103] <![CDATA[T 散 -(T 内环 +T2)]]> ≤-10 (-10，-5] (-5，-2] (-2，-0] ＞0 <![CDATA[K 21 ]]> 10 7 3 1 0

[0104] The second control logic, namely, the logic of controlling the outdoor fan to reduce its forward rotation speed, includes: adjusting the outdoor fan's forward rotation speed at a rate that decreases by a first preset speed every second preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed; wherein, the first preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature falls within a preset temperature range; wherein, the second preset time is such as time t2, and the first preset speed is such as speed R1 revolutions.

[0105] Specifically, the second control logic, i.e., the preset control logic S2, is executed as follows: The outdoor fan speed is reduced by decreasing the outdoor fan speed R1 revolutions every t2 time intervals (t2 is recommended to be 60 seconds) until the refrigerant cooling module temperature T... 散 >Indoor ambient temperature T 内环 + Correct the temperature T2, or the outdoor fan speed R. k Reaching the lower limit of the operating speed R min (operable lower speed limit R) min (The value can vary depending on the outdoor ambient temperature). The recommended rotational speed R1 is selected according to the parameters in Table 2.

[0106] Table 2: Recommended parameters for rotational speed R1

[0107] <![CDATA[T 散 -(T 内环 +T2)]]> ≤-10 (-10，-5] (-5，-2] (-2，-0] ＞0 <![CDATA[R1]]> 50 30 20 10 0

[0108] Executing the third control logic, namely, the logic for controlling the outdoor fan to reverse, includes: controlling the outdoor fan to reverse at a preset initial speed, and then adjusting the speed of the outdoor fan to reverse at a rate that decreases by a second preset speed every third preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the speed of the outdoor fan to reverse reaches the lower limit of the preset reverse operation speed range; wherein, the second preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature belongs within the preset temperature range; the preset initial speed is such as the initial speed R. kf The second preset time is such as time t2, and the first preset rotational speed is such as rotational speed R1.

[0109] Specifically, the execution of the third control logic, i.e., the preset control logic S3, is as follows: control the outdoor fan to reverse, with the initial rotational speed of the outdoor fan being R. kf (Initial speed R)kf With the lower limit speed of operation R min Relatedly, depending on the different motor parameters, the initial speed R is generally... kf With the lower limit speed of operation R min (The air volume is equivalent). Then, the outdoor fan speed R2 is decreased at a rate of t3 time intervals (t3 is recommended to be 60s) after the outdoor fan reverses. k Adjustments are made until the temperature T of the refrigerant heat dissipation module is reached. 散 >Indoor ambient temperature T 内环 + Correct temperature T2 or outdoor fan speed R k The lower limit speed R for reversible operation fmin The recommended rotational speed R2 is selected according to the parameters in Table 3.

[0110] Table 3: Recommended parameters for rotational speed R2

[0111] <![CDATA[T 散 -(T 内环 +T1)]]> ≤-10 (-10，-5] (-5，-2] (-2，-0] ＞0 <![CDATA[R2]]> 50 30 20 10 0

[0112] The execution of the fourth control logic, namely, the logic for increasing the rotational speed of the outdoor fan in reverse, includes: adjusting the rotational speed of the outdoor fan in reverse at a rate that increases by a third preset speed every fourth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the upper limit of the preset reverse operation speed range; wherein, the third preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; the fourth preset time is such as time t4, and the third preset speed is such as the rotational speed R3 of the outdoor fan.

[0113] The preset control logic S4 is: increase the speed R of the outdoor fan. k Increase the outdoor fan speed R3 every t4 time interval (t4 recommended 30s) to affect the outdoor fan speed R. k Adjustments are made until the temperature T of the refrigerant heat dissipation module is reached. 散 <Indoor ambient temperature T 内环 + Correct temperature T4, or outdoor fan speed R k Reaching the upper limit speed R during reverse operation kf If the outdoor fan speed R k Reaching the upper limit speed R during reverse operation kf Then control the outdoor fan to rotate forward. The initial speed of the outdoor fan is R. min The recommended rotational speed R3 is selected according to the parameters in Table 4.

[0114] Table 4: Recommended parameters for R3 rotational speed

[0115] <![CDATA[T 散 -(T 内环 +T4)]]> ＜0 [0，2) [2，-5) [5，10) ≥10 <![CDATA[R3]]> 0 10 20 30 50

[0116] Executing the fifth control logic, namely, the logic of further increasing the rotational speed of the outdoor fan in reverse, includes: adjusting the rotational speed of the outdoor fan in reverse at a rate that increases by a fourth preset speed every fifth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the rotational speed of the outdoor fan in forward rotation before the execution of the second control logic; wherein, the fourth preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within a preset temperature range; the fifth preset time is such as time t5, and the fourth preset speed is such as the rotational speed R4 of the outdoor fan.

[0117] The preset control logic S5 is: increase the speed R of the outdoor fan. k Adjust the outdoor fan speed by increasing the speed of R4 revolutions every t5 time interval (t5 is recommended to be 30 seconds) until the temperature of the refrigerant heat dissipation module reaches T. 散 <Indoor ambient temperature T 内环 + Correct temperature T4, or outdoor fan speed R k The rotational speed R0 is reached (R0 is the rotational speed before executing S2). It is recommended that rotational speed R4 be selected according to the parameters in Table 5.

[0118] Table 5: Recommended parameters for R4 speed

[0119] <![CDATA[T 散 -(T 内环 +T4)]]> ＜0 [0，2) [2，-5) [5，10) ≥10 <![CDATA[R4]]> 0 10 20 30 50

[0120] The execution of the sixth control logic, namely, the logic for controlling the reduction of the opening degree of the second throttling device, includes: adjusting the opening degree of the second throttling device at a rate of decreasing the second preset opening degree every third preset time interval until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; the second preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range. The third preset time interval is, for example, time t3, and the second preset opening degree is, for example, opening degree K. 22 step.

[0121] The preset control logic S6 is as follows: reduce the opening degree of electronic expansion valve 2 by decreasing the opening degree K of electronic expansion valve 2 every t3 time intervals (t3 is recommended to be 30s). 22The step rate is adjusted until the temperature T of the refrigerant heat dissipation module is reached. 散 <Indoor ambient temperature T 内环 + Corrected temperature T4. Wherein, opening degree K 22 It is recommended to select the parameters as shown in Table 6.

[0122] Table 6: Recommended parameters for R5 speed

[0123] <![CDATA[T 散 -(T 内环 +T4)]]> ＜0 [0，2) [2，-5) [5，10) ≥10 <![CDATA[K 22 ]]> 0 1 3 7 10

[0124] In this invention, two electronic expansion valves (i.e., electronic expansion valve 1 and electronic expansion valve 2) are used, and the temperature of the refrigerant heat dissipation module is further regulated by controlling the speed of the outdoor fan. Specifically, when the temperature T of the refrigerant heat dissipation module is detected... 散 Temperatures below the indoor dew point (e.g., indoor ambient temperature T) 内环 When adjusting the temperature (to the sum of the corrected temperature T1), the temperature of the refrigerant heat dissipation module can be adjusted by first adjusting the opening of the electronic expansion valve 2. When the adjustment effect of the opening of the electronic expansion valve 2 is not obvious, the speed of the outdoor fan can be reduced. When the speed of the outdoor fan is reduced to the lower limit of the operating speed, it can be achieved by reversing the outdoor fan. In this way, the refrigerant heat dissipation module can be prevented from condensing under extremely low temperature conditions, avoiding the problems of air conditioning system vibration and reduced motor reliability caused by the start and stop of the fan.

[0125] Among them, in electronic expansion valve 1 and electronic expansion valve 2, the electronic expansion valve after the refrigerant heat dissipation module is controlled according to the refrigerant flow direction, while the electronic expansion valve before the refrigerant heat dissipation module is in a fully open state.

[0126] In the present invention, electronic expansion valve 1 and electronic expansion valve 2 are connected in series, which can realize that the refrigerant flow through the refrigerant heat dissipation module is 0% to 100% of the refrigerant circulation flow of the air conditioning system. At the same time, it can be adjusted in conjunction with the speed of the outdoor fan to prevent condensation from occurring on the refrigerant heat dissipation module under extremely low temperature conditions.

[0127] The technical solution of this embodiment involves installing an outdoor heat exchanger and an outdoor fan on the outdoor unit side of the air conditioning system, and installing a compressor, a four-way valve, an indoor heat exchanger, a first throttling device (such as a first electronic expansion valve), a second throttling device (such as a second electronic expansion valve), and a refrigerant cooling module on the indoor side of the air conditioning system. The refrigerant cooling module is used to dissipate refrigerant heat from the controller of the air conditioning system. The compressor's exhaust port returns to the compressor's suction port after passing through the first and second ports of the four-way valve, the outdoor heat exchanger, the first throttling device (such as a first electronic expansion valve), the refrigerant cooling module, the second throttling device (such as a second electronic expansion valve), the fourth port of the four-way valve, and the third port of the four-way valve. After the air conditioning system starts operating, the compressor's... After the operating frequency reaches the target frequency and stabilizes for a preset time, the temperature of the refrigerant heat dissipation module is detected. If the detected temperature of the refrigerant heat dissipation module is lower than the sum of the indoor ambient temperature and the first correction temperature, the first preset control logic is executed, i.e., the opening of the second throttling device is increased, until the detected temperature of the refrigerant heat dissipation module is higher than the sum of the indoor ambient temperature and the second correction temperature. If, after the first preset control logic has been executed for a preset time, the detected temperature of the refrigerant heat dissipation module is still lower than the sum of the indoor ambient temperature and the first correction temperature, or if the detected temperature of the refrigerant heat dissipation module is lower than the sum of the indoor ambient temperature and the third correction temperature, then the second preset control logic is executed, i.e., the speed of the outdoor fan is reduced until the detected refrigerant heat dissipation temperature is lower than the sum of the indoor ambient temperature and the third correction temperature. If the module temperature is greater than the sum of the indoor ambient temperature and the second correction temperature, or until the detected outdoor fan speed reaches the lower limit of the preset operating speed range; if the detected outdoor fan speed reaches the lower limit of the preset operating speed range, but the detected refrigerant heat dissipation module temperature is still less than the sum of the indoor ambient temperature and the first correction temperature, then the third preset control logic is executed, i.e., the outdoor fan is controlled to reverse; wherein, if the detected refrigerant heat dissipation module temperature is greater than the sum of the indoor ambient temperature and the fourth correction temperature: if the third preset control logic has already been executed, then the fourth preset control logic is executed, i.e., the outdoor fan speed is increased to the reverse speed; then, if the outdoor fan speed has reached the speed for controlling forward rotation, then when ... the refrigerant heat dissipation module temperature is increased to the reverse speed. If the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature, the fifth preset control logic is executed, which means increasing the speed of the outdoor fan again. If the speed of the outdoor fan has reached the speed before the second preset control logic was executed after the fifth preset control logic is executed, and the detected temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature, then the sixth preset control logic is executed, which means reducing the opening of the second throttling element until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the fourth correction temperature. If the third preset control logic has not been executed, then the second preset control logic is executed. If the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature after the second preset control logic is executed, then the fifth preset control logic is executed.If neither the third nor the second preset control logic has been executed, then the first preset control logic is executed. If the sum of these two logics is greater than the sum of the indoor ambient temperature and the fourth correction temperature, then the sixth preset control logic is executed. If neither the third nor the second preset control logic has been executed, but the first preset control logic has been executed, then if the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature and the second correction temperature, but less than or equal to the sum of the indoor ambient temperature and the fourth correction temperature, then the current state remains unchanged. This prevents condensation on the refrigerant heat dissipation module at extremely low temperatures. Therefore, by adjusting the temperature of the refrigerant heat dissipation module in conjunction with the refrigerant flow rate and the outdoor fan speed when the module temperature is lower than the indoor dew point temperature, condensation on the refrigerant heat dissipation module is avoided, which improves the safety of the controller.

[0128] According to an embodiment of the present invention, a control device for an air conditioning system corresponding to a control method for an air conditioning system is also provided. See also Figure 8 The diagram shows a structural schematic of an embodiment of the device of the present invention. The air conditioning system includes: an indoor unit and an outdoor unit; the outdoor unit includes: an outdoor heat exchanger and an outdoor fan; the indoor unit includes: an indoor heat exchanger and an indoor fan, a compressor, a four-way valve, a first throttling device, a second throttling device, a refrigerant heat dissipation device, and a controller; wherein, the exhaust port of the compressor, after passing through the first and second valve ports of the four-way valve, the outdoor heat exchanger, the second throttling device, the refrigerant heat dissipation module, the first throttling device, and the indoor heat exchanger, is connected to the fourth valve port of the four-way valve; the third valve port of the four-way valve returns to the suction port of the compressor; the controller is used to control the outdoor unit and the indoor unit; the refrigerant heat dissipation device is used to dissipate refrigerant heat from the controller. The first throttling device is such as an electronic expansion valve 1, and the second throttling device is such as an electronic expansion valve 2. Specifically, Figure 9 This is a schematic diagram of an embodiment of an air conditioning system with a refrigerant heat dissipation module. Some designs use air conditioning systems without a refrigerant heat dissipation module, while the air conditioning system addressed in this invention has a refrigerant heat dissipation module. For example... Figure 9The air conditioning system shown includes an outdoor unit and an indoor unit. On the indoor unit side, there is a compressor, a four-way valve, a gas-liquid separator, an indoor heat exchanger and an indoor fan, a refrigerant heat dissipation module, an electronic expansion valve 1, and an electronic expansion valve 2. On the outdoor unit side, there is an outdoor heat exchanger and an outdoor fan. A first shut-off valve and a second shut-off valve are installed between the indoor and outdoor units. The compressor's discharge port is connected to the first port of the four-way valve. The second port of the four-way valve, after passing through the second shut-off valve, the outdoor heat exchanger, the first shut-off valve, electronic expansion valve 1, the refrigerant heat dissipation module, electronic expansion valve 2, and the indoor heat exchanger, returns to the fourth port of the four-way valve. The third port of the four-way valve, after passing through the gas-liquid separator, returns to the compressor's suction port.

[0129] like Figure 9 As shown, after the refrigerant is discharged from the compressor, it condenses in the condenser (i.e., the outdoor heat exchanger), then passes through the first throttling device (i.e., electronic expansion valve 1) and is introduced into the refrigerant heat dissipation module of the controller to dissipate heat from the controller. After passing through the second throttling device (i.e., electronic expansion valve 2), it enters the evaporator (i.e., the indoor heat exchanger) for evaporation, and finally flows back into the compressor to enter the next cycle. In low-temperature cooling conditions of the air conditioning system, the temperature of the refrigerant after condensation in the condenser (i.e., the outdoor heat exchanger) is generally 3-5°C higher than the ambient temperature. Even if the first throttling device (i.e., electronic expansion valve 1) is adjusted to the maximum flow rate, the temperature of the refrigerant heat dissipation module is only 3-5°C higher than the outdoor ambient temperature. The ambient temperature used by the equipment is generally 25-35°C. Therefore, in low-temperature environments, especially below 0°C, the refrigerant heat dissipation module is highly susceptible to condensation due to the low refrigerant temperature, which can cause condensation on the surface of the module and burn out the controller's mainboard. On the other hand, in low-temperature cooling conditions of the air conditioning system, since the compressor generally operates at a low frequency and the controller generates little heat, the temperature of the refrigerant heat dissipation module is generally not high. In this case, the temperature of the refrigerant heat dissipation module drops relatively low after being cooled by the refrigerant. The control device of the air conditioning system includes: an acquisition unit 102 and a control unit 104.

[0130] The acquisition unit 102 is configured to acquire the temperature of the refrigerant heat dissipation module and the indoor ambient temperature of the air conditioning system after the compressor's operating frequency has reached a preset target frequency and the compressor's operating time has reached a preset target time, when the air conditioning system is turned on and running. The preset target time is t0, and the temperature of the refrigerant heat dissipation module is T. 散 The indoor ambient temperature of the air conditioning system is, for example, indoor ambient temperature T. 内环 The specific functions and processing of the acquisition unit 102 are described in step S110.

[0131] The control unit 104 is configured to execute preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module and preventing condensation from forming on the refrigerant heat dissipation module. The specific functions and processing of this control unit 104 are described in step S120.

[0132] The preset control logic includes at least one of the following: a first control logic, a second control logic, a third control logic, a fourth control logic, a fifth control logic, and a sixth control logic; the first control logic is as preset control logic S1, the second control logic is as preset control logic S2, the third control logic is as preset control logic S3, the fourth control logic is as preset control logic S4, the fifth control logic is as preset control logic S5, and the sixth control logic is as preset control logic S6.

[0133] The control unit 104 executes preset control logic, including executing at least one of the following: the control unit 104 is specifically configured to execute the first control logic, namely, the logic of controlling the opening degree of the second throttling device to increase; the control unit 104 is specifically configured to execute the second control logic, namely, the logic of controlling the speed of the outdoor fan rotating forward to decrease; the control unit 104 is specifically configured to execute the third control logic, namely, the logic of controlling the outdoor fan to rotate in reverse; the control unit 104 is specifically configured to execute the fourth control logic, namely, the logic of controlling the speed of the outdoor fan rotating in reverse to increase; the control unit 104 is specifically configured to execute the fifth control logic, namely, the logic of controlling the speed of the outdoor fan rotating in reverse to further increase; the control unit 104 is specifically configured to execute the sixth control logic, namely, the logic of controlling the opening degree of the second throttling device to decrease.

[0134] The outdoor fan control device for an air conditioning system with a refrigerant heat dissipation module proposed in this invention can solve the problem of condensation easily occurring when the refrigerant heat dissipation module dissipates refrigerant under low-temperature cooling conditions. Specifically, when the temperature of the refrigerant heat dissipation module is detected to be lower than the indoor dew point temperature, adjustment can be made first by adjusting the opening of the electronic expansion valve 2. When the adjustment effect of the electronic expansion valve 2 is not obvious, the speed of the outdoor fan can be reduced. When the speed of the outdoor fan is reduced to the lower limit speed, it can be achieved by reversing the fan. This also avoids the problems of system vibration and reduced motor reliability caused by fan start-stop. In this way, based on fan control technology, the condenser outlet temperature of the air conditioning system can be controlled under different conditions, avoiding the situation where the refrigerant heat dissipation module is prone to condensation and damage to the controller under low-temperature cooling conditions, thus improving the reliability of the air conditioning system. Under low-temperature cooling conditions, the solution of this invention solves the problem of condensation easily occurring on the refrigerant heat dissipation module under low-temperature cooling conditions without increasing costs. Compared with the method of starting and stopping the fan, it can improve the operational reliability of the air conditioning system and broaden the application range of the refrigerant heat dissipation module.

[0135] In some embodiments, the preset correction temperature range includes: a first correction temperature and a second correction temperature, wherein the second correction temperature is greater than the first correction temperature; the first correction temperature is such as correction temperature T1, the second correction temperature is such as correction temperature T2, and the third correction temperature is such as correction temperature T3.

[0136] The control unit 104, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module, including:

[0137] The control unit 104 is further configured to determine whether the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature. The specific functions and processing of the control unit 104 are described in step S210.

[0138] The control unit 104 is further configured to execute the first control logic if it is determined that the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature. Of course, if it is determined that the temperature of the refrigerant heat dissipation module is greater than or equal to the indoor ambient temperature of the air conditioning system and the first correction temperature, the preset control logic is terminated. The specific functions and processing of this control unit 104 are described in step S220.

[0139] Specifically, Figure 10 This is a schematic flowchart illustrating an embodiment of an outdoor fan control device for an air conditioning system with a refrigerant heat dissipation module. Figure 10 As shown, the outdoor fan control device of the air conditioning system with a refrigerant heat dissipation module proposed in this invention includes:

[0140] Step 1: After the air conditioning system starts running and the compressor reaches the target frequency and runs stably for time t0 (t0 is recommended to be 10 minutes), proceed to Step 2 to begin detecting the temperature T of the refrigerant heat dissipation module. 散 .

[0141] Step 2: Detect the temperature T of the refrigerant heat dissipation module. 散 When the temperature T of the refrigerant heat dissipation module is detected 散 <Indoor ambient temperature T 内环 When correcting temperature T1, execute the preset control logic S1 until the temperature of the refrigerant heat dissipation module reaches T. 散 >Indoor ambient temperature T 内环 + Correction temperature T2 (T2 is recommended to be 3℃).

[0142] In some embodiments, the preset correction temperature range further includes: a third correction temperature; the third correction temperature is such as correction temperature T3.

[0143] The control unit 104, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit also includes:

[0144] The control unit 104 is further configured to determine whether the following conditions are met if the execution time of the first control logic has reached a preset execution time: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature; wherein the third corrected temperature is greater than the first corrected temperature. The specific functions and processing of this control unit 104 are described in step S310.

[0145] The control unit 104 is further configured to, when the execution time of the first control logic has reached a preset execution time, if it is determined that: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature, then execute the second control logic until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed. Wherein, the lower limit of the preset forward rotation speed is, for example, the lower limit of the operable speed R. min The specific functions and processing of the control unit 104 are described in step S320.

[0146] Specifically, such as Figure 10 As shown, the outdoor fan control device of the air conditioning system with a refrigerant heat dissipation module proposed in the present invention further includes: in step 2, if the execution time of the preset control logic S1 reaches time t (t is recommended to be 3 minutes), the temperature T of the refrigerant heat dissipation module is still satisfied. 散 <Indoor ambient temperature T 内环 + Correct temperature T1, or detect the temperature T of the refrigerant heat dissipation module. 散 <Indoor ambient temperature T 内环 If the temperature is corrected to T3 (T3 is recommended to be T1+3℃), then the preset control logic S2 will be executed until the temperature of the refrigerant heat dissipation module is T. 散 >Indoor ambient temperature T 内环 + Correct the temperature T2, or the outdoor fan speed R. k Reaching the lower limit of the operating speed R min .

[0147] In some embodiments, the control unit 104 executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit further includes:

[0148] The control unit 104 is further configured to, after executing the second control logic, determine whether the following conditions are met: the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature. The specific functions and processing of this control unit 104 are described in step S410.

[0149] The control unit 104 is further configured to, after executing the second control logic, if it is determined that: the forward rotation speed of the outdoor fan reaches the lower limit of a preset forward operating speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, then execute the third control logic until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the reverse rotation speed of the outdoor fan reaches the lower limit of a preset reverse operating speed range. The lower limit of the preset reverse operating speed range may be, for example, the lower limit speed R for reverse operation. fmin The specific functions and processing of the control unit 104 are described in step S420.

[0150] Specifically, such as Figure 10 As shown, the outdoor fan control device of the air conditioning system with a refrigerant heat dissipation module proposed in the present invention further includes: in step 2, after executing the preset control logic S2, when the outdoor fan speed R is detected... k The lower limit speed R of operation has been reached. min And the temperature T of the refrigerant heat dissipation module 散 <Indoor ambient temperature T 内环 If the temperature T1 is corrected, the preset control logic S3 will be executed until the temperature T of the refrigerant heat dissipation module is reached. 散 >Indoor ambient temperature T 内环 + Correct temperature T2 or outdoor fan speed R k The lower limit speed R for reversible operation fmin .

[0151] In some embodiments, the preset correction temperature range further includes: a fourth correction temperature; the fourth correction temperature is such as correction temperature T4.

[0152] The control unit 104, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit also includes:

[0153] The control unit 104 is further configured to, when the execution time of the first control logic has reached a preset execution time, determine whether the condition of the refrigerant heat dissipation module being greater than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature is met if it is determined that either the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature. The specific functions and processing of this control unit 104 are described in step S510.

[0154] The control unit 104 is further configured to, after executing the second control logic, determine whether the following conditions are met: the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature. Specifically, if the following conditions are not met: the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. The specific functions and processing of this control unit 104 are described in step S520.

[0155] The control unit 104 is further configured to, after executing the third control logic, determine whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. The specific functions and processing of this control unit 104 are described in step S530.

[0156] The control unit 104 is further configured to determine whether the third control logic has been executed if it is determined that the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. The specific functions and processing of the control unit 104 are described in step S540.

[0157] The control unit 104 is further configured to execute the fourth control logic if the condition is met, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth corrected temperature, or until the outdoor fan's reverse rotation speed reaches the upper limit of a preset reverse operation speed range; wherein, the upper limit of the preset reverse operation speed range is, for example, the upper limit speed R during reverse operation. kf The specific functions and processing of the control unit 104 are described in step S550.

[0158] The control unit 104 is further configured to: If the second control logic has already been executed, then execute the fifth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the outdoor fan's reverse rotation speed reaches the speed at which the outdoor fan was rotating forward before the second control logic was executed; otherwise, determine if the first control logic has already been executed. If so, execute the sixth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, otherwise terminate the execution of the preset control logic. Of course, if it is determined that the temperature of the refrigerant heat dissipation module is not greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then terminate the execution of the preset control logic. For the specific functions and processing of this control unit 104, please refer to step S560.

[0159] Specifically, such as Figure 10 As shown, the outdoor fan control device of the air conditioning system with a refrigerant heat dissipation module proposed in the present invention further includes: in step 2, when executing the sum of preset control logic S3, if the temperature T of the refrigerant heat dissipation module is detected... 散 >Indoor ambient temperature T 内环 + Correct temperature T4 (T4 recommended 10℃), then: if the preset control logic S3 operation has been executed, then execute step 3, that is, execute the preset control logic S4; if the preset control logic S3 operation has not been executed, then execute step 4, that is, execute the preset control logic S2.

[0160] Step 3: In step 2, after detecting the temperature T of the refrigerant heat dissipation module... 散 >Indoor ambient temperature T 内环 If the temperature is corrected to T4 (T4 recommended 10℃), and the preset control logic S3 has been executed, then step 3 will be executed, i.e., the preset control logic S4 will be executed, until the temperature of the refrigerant heat dissipation module is T. 散 <Indoor ambient temperature T 内环 + Correct temperature T4, or outdoor fan speed R k Reaching the upper limit speed R during reverse operation kf .

[0161] Step 4: In step 2, after detecting the temperature T of the refrigerant heat dissipation module... 散 >Indoor ambient temperature T 内环 If the temperature is corrected to T4 (T4 is recommended to be 10℃), and the preset control logic S3 has not been executed, then step 4 is executed, which is to execute the preset control logic S2.

[0162] After executing the preset control logic S2, when the temperature T of the refrigerant heat dissipation module... 散>Indoor ambient temperature T 内环 If the temperature T4 is corrected, the preset control logic S5 will be executed.

[0163] In step 2, when the temperature T of the refrigerant heat dissipation module is detected... 散 >Indoor ambient temperature T 内环 + Corrected temperature T4 (T4 recommended 10℃), if preset control logic S2 and preset control logic S3 have not been executed, but preset control logic S1 has been executed, when the temperature T of the refrigerant heat dissipation module... 散 >Indoor ambient temperature T 内环 If the temperature T4 is corrected, the preset control logic S6 will be executed.

[0164] In some embodiments, the control unit 104 executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit further includes:

[0165] The control unit 104 is further configured to, after executing the fourth control logic, determine whether the following conditions are met: the rotational speed of the outdoor fan in reverse rotation has reached the rotational speed when the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. The specific functions and processing of this control unit 104 are described in step S610.

[0166] The control unit 104 is further configured to execute the fifth control logic if it is determined that: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed at which the outdoor fan reverses reaches the speed at which the outdoor fan rotates forward before the execution of the second control logic; of course, if it is determined that: the speed at which the outdoor fan reverses does not reach the speed at which the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the preset control logic is terminated. The specific functions and processing of this control unit 104 are described in step S620.

[0167] Specifically, such as Figure 10 As shown, the outdoor fan control device of the air conditioning system with a refrigerant heat dissipation module proposed in the present invention further includes: in step 3, if the preset control logic S4 is executed and the outdoor fan speed R...k The rotational speed has been reached to control forward rotation, and the temperature T of the refrigerant cooling module has also been detected. 散 >Indoor ambient temperature T 内环 If the temperature T4 is corrected, the preset control logic S5 will be executed until the temperature T of the refrigerant heat dissipation module is reached. 散 <Indoor ambient temperature T 内环 + Correct temperature T4, or outdoor fan speed R k The rotational speed R0 is reached.

[0168] In some embodiments, the control unit 104 executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit further includes:

[0169] The control unit 104 is further configured to, after executing the fifth control logic, determine whether the following conditions are met: the rotational speed of the outdoor fan in reverse rotation has reached the rotational speed of the outdoor fan in forward rotation before the execution of the second control logic, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. The specific functions and processing of this control unit 104 are described in step S710.

[0170] The control unit 104 is further configured to execute the sixth control logic if it is determined that: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan rotates forward before the execution of the second control logic, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. Conversely, if it is determined that: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan rotates forward before the execution of the second control logic, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the preset control logic is terminated. The specific functions and processing of this control unit 104 are described in step S720.

[0171] Specifically, such as Figure 10 As shown, the outdoor fan control device for an air conditioning system with a refrigerant heat dissipation module proposed in this invention further includes: if the preset control logic in S5 is executed and the speed of the outdoor fan has reached speed R0, the temperature T of the refrigerant heat dissipation module is also detected. 散 >Indoor ambient temperature T 内环 If the temperature T4 is corrected, the preset control logic S6 will be executed until the temperature T of the refrigerant heat dissipation module is reached.散 <Indoor ambient temperature T 内环 + Corrected temperature T4.

[0172] In some embodiments, the control unit 104 executes preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby adjusting the outlet temperature of the refrigerant heat dissipation module. The control unit 104 is further configured to, if neither the second nor the third control logic has been executed, but the first control logic has been executed, and the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then control the air conditioning system to maintain its current state.

[0173] Specifically, such as Figure 10 As shown, the outdoor fan control device of the air conditioning system with a refrigerant heat dissipation module proposed in the present invention further includes: in step 2, when the temperature T of the refrigerant heat dissipation module is detected... 散 >Indoor ambient temperature T 内环 + Corrected temperature T4 (T4 recommended 10℃), if preset control logic S2 and preset control logic S3 have not been executed, but preset control logic S1 has been executed, when the indoor ambient temperature T 内环 + Corrected temperature T4 ≥ Temperature of refrigerant cooling module T 散 ≥Indoor ambient temperature T 内环 + Correct temperature T2, maintain the current state unchanged.

[0174] In some embodiments, the specific execution process of the control unit 104 executing at least one of the first control logic, the second control logic, the third control logic, the fourth control logic, the fifth control logic, and the sixth control logic can be seen in the following exemplary description.

[0175] The control unit 104 executes the first control logic, namely, the logic for controlling the increase of the opening degree of the second throttling device, including: the control unit 104 is further configured to adjust the opening degree of the second throttling device at a rate that increases the first preset opening degree at first preset time intervals, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second preset correction temperature; wherein, the first preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range. The first preset time is, for example, time t1, and the first preset opening degree is, for example, opening degree K. 21 step.

[0176] Specifically, the first control logic, i.e. the preset control logic S1, is executed as follows: increase the opening of the electronic expansion valve 2 by increasing the opening K every t1 time interval (t1 is recommended to be 30 seconds). 21 The rate of change adjusts the opening of the electronic expansion valve 2 until the temperature T of the refrigerant heat dissipation module reaches a certain level. 散 >Indoor ambient temperature T 内环 + Correction temperature T2 (T2 is recommended to be 3℃). Wherein, opening degree K... 21 It is recommended to select the parameters as shown in Table 1.

[0177] Table 1: Opening Degree K 21 Recommended parameter table

[0178] <![CDATA[T 散 -(T 内环 +T2)]]> ≤-10 (-10，-5] (-5，-2] (-2，-0] ＞0 <![CDATA[K 21 ]]> 10 7 3 1 0

[0179] The control unit 104 executes the second control logic, namely, the logic of controlling the reduction of the forward rotation speed of the outdoor fan, including: the control unit 104 is further configured to adjust the forward rotation speed of the outdoor fan at a rate of decreasing the first preset rotation speed every second preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed; wherein, the first preset rotation speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within a preset temperature range. The second preset time is, for example, time t2, and the first preset rotation speed is, for example, rotation speed R1 revolutions.

[0180] Specifically, the second control logic, i.e., the preset control logic S2, is executed as follows: The outdoor fan speed is reduced by decreasing the outdoor fan speed R1 revolutions every t2 time intervals (t2 is recommended to be 60 seconds) until the refrigerant cooling module temperature T... 散 >Indoor ambient temperature T内环 + Correct the temperature T2, or the outdoor fan speed R. k Reaching the lower limit of the operating speed R min (operable lower speed limit R) min (The value can vary depending on the outdoor ambient temperature). The recommended rotational speed R1 is selected according to the parameters in Table 2.

[0181] Table 2: Recommended parameters for rotational speed R1

[0182] <![CDATA[T 散 -(T 内环 +T2)]]> ≤-10 (-10，-5] (-5，-2] (-2，-0] ＞0 <![CDATA[R1]]> 50 30 20 10 0

[0183] The control unit 104 executes the third control logic, namely, the logic for controlling the outdoor fan to reverse, including: the control unit 104 is further configured to control the outdoor fan to reverse at a preset initial speed, and then adjust the speed of the outdoor fan reversal at a rate that decreases by a second preset speed every third preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the speed of the outdoor fan reversal reaches the lower limit of a preset reversal operating speed range; wherein, the second preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature belongs within a preset temperature range. The preset initial speed is, for example, the initial speed R. kf The second preset time is such as time t2, and the first preset rotational speed is such as rotational speed R1.

[0184] Specifically, the execution of the third control logic, i.e., the preset control logic S3, is as follows: control the outdoor fan to reverse, with the initial rotational speed of the outdoor fan being R. kf (Initial speed R) kf With the lower limit speed of operation R min Relatedly, depending on the different motor parameters, the initial speed R is generally... kf With the lower limit speed of operation R min (The air volume is equivalent). Then, the outdoor fan speed R2 is decreased at a rate of t3 time intervals (t3 is recommended to be 60s) after the outdoor fan reverses. k Adjustments are made until the temperature T of the refrigerant heat dissipation module is reached. 散 >Indoor ambient temperature T 内环 + Correct temperature T2 or outdoor fan speed R k The lower limit speed R for reversible operation fmin The recommended rotational speed R2 is selected according to the parameters in Table 3.

[0185] Table 3: Rotational Speed ​​R 2 Recommended parameter table

[0186] <![CDATA[T 散 -(T 内环 +T1)]]> ≤-10 (-10，-5] (-5，-2] (-2，-0] ＞0 <![CDATA[R2]]> 50 30 20 10 0

[0187] The execution of the fourth control logic, namely, the logic for increasing the rotational speed of the outdoor fan in reverse, includes: the control unit 104 is further configured to adjust the rotational speed of the outdoor fan in reverse at a rate that increases by a third preset speed every fourth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the upper limit of the preset reverse operation speed range; wherein, the third preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range. The fourth preset time is such as time t4, and the third preset speed is such as the rotational speed R3 of the outdoor fan.

[0188] The preset control logic S4 is: increase the speed R of the outdoor fan. k Increase the outdoor fan speed R3 every t4 time interval (t4 recommended 30s) to affect the outdoor fan speed R. k Adjustments are made until the temperature T of the refrigerant heat dissipation module is reached. 散 <Indoor ambient temperature T 内环 + Correct temperature T4, or outdoor fan speed R k Reaching the upper limit speed R during reverse operation kf If the outdoor fan speed R k Reaching the upper limit speed R during reverse operation kf Then control the outdoor fan to rotate forward. The initial speed of the outdoor fan is R. min The recommended rotational speed R3 is selected according to the parameters in Table 4.

[0189] Table 4: Recommended parameters for R3 rotational speed

[0190] <![CDATA[T 散 -(T 内环 +T4)]]> ＜0 [0，2) [2，-5) [5，10) ≥10 <![CDATA[R3]]> 0 10 20 30 50

[0191] Executing the fifth control logic, namely, the logic to further increase the rotational speed of the outdoor fan in reverse, includes: the control unit 104 is further configured to adjust the rotational speed of the outdoor fan in reverse at a rate that increases by a fourth preset speed every fifth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the rotational speed of the outdoor fan in forward rotation before the execution of the second control logic; wherein, the fourth preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range. The fifth preset time is such as time t5, and the fourth preset speed is such as the rotational speed R4 of the outdoor fan.

[0192] The preset control logic S5 is: increase the speed R of the outdoor fan. k Adjust the outdoor fan speed by increasing the speed of R4 revolutions every t5 time interval (t5 is recommended to be 30 seconds) until the temperature of the refrigerant heat dissipation module reaches T. 散 <Indoor ambient temperature T 内环 + Correct temperature T4, or outdoor fan speed R k The rotational speed R0 is reached (R0 is the rotational speed before executing S2). It is recommended that rotational speed R4 be selected according to the parameters in Table 5.

[0193] Table 5: Recommended parameters for R4 speed

[0194] <![CDATA[T 散 -(T 内环 +T4)]]> ＜0 [0，2) [2，-5) [5，10) ≥10 <![CDATA[R4]]> 0 10 20 30 50

[0195] Executing the sixth control logic, namely, the logic for controlling the reduction of the opening degree of the second throttling device, includes: the control unit 104 is further configured to adjust the opening degree of the second throttling device at a rate of decreasing the second preset opening degree every third preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; the second preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range. The third preset time interval is, for example, time t3, and the second preset opening degree is, for example, opening degree K. 22 step.

[0196] The preset control logic S6 is as follows: reduce the opening degree of electronic expansion valve 2 by decreasing the opening degree K of electronic expansion valve 2 every t3 time intervals (t3 is recommended to be 30s). 22 The step rate is adjusted until the temperature T of the refrigerant heat dissipation module is reached. 散 <Indoor ambient temperature T 内环+ Corrected temperature T4. Wherein, opening degree K 22 It is recommended to select the parameters as shown in Table 6.

[0197] Table 6: Recommended parameters for R5 speed

[0198] <![CDATA[T 散 -(T 内环 +T4)]]> ＜0 [0，2) [2，-5) [5，10) ≥10 <![CDATA[K 22 ]]> 0 1 3 7 10

[0199] In this invention, two electronic expansion valves (i.e., electronic expansion valve 1 and electronic expansion valve 2) are used, and the temperature of the refrigerant heat dissipation module is further regulated by controlling the speed of the outdoor fan. Specifically, when the temperature T of the refrigerant heat dissipation module is detected... 散 Temperatures below the indoor dew point (e.g., indoor ambient temperature T) 内环 When adjusting the temperature (to the sum of the corrected temperature T1), the temperature of the refrigerant heat dissipation module can be adjusted by first adjusting the opening of the electronic expansion valve 2. When the adjustment effect of the opening of the electronic expansion valve 2 is not obvious, the speed of the outdoor fan can be reduced. When the speed of the outdoor fan is reduced to the lower limit of the operating speed, it can be achieved by reversing the outdoor fan. In this way, the refrigerant heat dissipation module can be prevented from condensing under extremely low temperature conditions, avoiding the problems of air conditioning system vibration and reduced motor reliability caused by the start and stop of the fan.

[0200] In the present invention, electronic expansion valve 1 and electronic expansion valve 2 are connected in series, which can realize that the refrigerant flow through the refrigerant heat dissipation module is 0% to 100% of the refrigerant circulation flow of the air conditioning system. At the same time, it can be adjusted in conjunction with the speed of the outdoor fan to prevent condensation from occurring on the refrigerant heat dissipation module under extremely low temperature conditions.

[0201] Since the processing and functions implemented by the device in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0202] The technical solution of this invention involves an outdoor heat exchanger and an outdoor fan installed on the outdoor unit side of the air conditioning system, and a compressor, a four-way valve, an indoor heat exchanger, a first throttling device (such as a first electronic expansion valve), a second throttling device (such as a second electronic expansion valve), and a refrigerant heat dissipation module installed on the indoor side of the air conditioning system. The refrigerant heat dissipation module is used to dissipate refrigerant heat from the controller of the air conditioning system. The compressor's exhaust port returns to the compressor's suction port after passing through the first and second ports of the four-way valve, the outdoor heat exchanger, the first throttling device (such as a first electronic expansion valve), the refrigerant heat dissipation module, the second throttling device (such as a second electronic expansion valve), the fourth and third ports of the four-way valve. After the air conditioning system starts operating, the compressor... After the operating frequency reaches the target frequency and operates stably for a preset time, the temperature of the refrigerant heat dissipation module is detected. If the detected temperature of the refrigerant heat dissipation module is lower than the sum of the indoor ambient temperature and the first correction temperature, the first preset control logic is executed, i.e., the opening of the second throttling device is increased, until the detected temperature of the refrigerant heat dissipation module is higher than the sum of the indoor ambient temperature and the second correction temperature. If, after the first preset control logic has been executed for a preset time, the detected temperature of the refrigerant heat dissipation module is still lower than the sum of the indoor ambient temperature and the first correction temperature, or if the detected temperature of the refrigerant heat dissipation module is lower than the sum of the indoor ambient temperature and the third correction temperature, then the second preset control logic is executed, i.e., the speed of the outdoor fan is reduced, until the detected temperature of the refrigerant heat dissipation module is higher than the sum of the indoor ambient temperature and the second correction temperature. If the temperature of the refrigerant cooling module is greater than the sum of the indoor ambient temperature and the second correction temperature, or until the detected outdoor fan speed reaches the lower limit of the preset operating speed range; if the detected outdoor fan speed reaches the lower limit of the preset operating speed range, but the detected refrigerant cooling module temperature is still less than the sum of the indoor ambient temperature and the first correction temperature, then the third preset control logic is executed, i.e., the outdoor fan is controlled to reverse; wherein, if the detected refrigerant cooling module temperature is greater than the sum of the indoor ambient temperature and the fourth correction temperature: if the third preset control logic has already been executed, then the fourth preset control logic is executed, i.e., the outdoor fan speed is increased to the speed at which forward rotation is controlled, then if the temperature of the refrigerant cooling module is detected to be greater than the sum of the indoor ambient temperature and the fourth correction temperature: If the temperature is greater than the sum of the indoor ambient temperature and the fourth correction temperature, the fifth preset control logic is executed, which means increasing the speed of the outdoor fan again. If the speed of the outdoor fan has reached the speed before the second preset control logic was executed after the fifth preset control logic is executed, and the detected temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature, then the sixth preset control logic is executed, which means reducing the opening of the second throttling element until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the fourth correction temperature. If the third preset control logic has not been executed, then the second preset control logic is executed. If the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature after the second preset control logic is executed, then the fifth preset control logic is executed.If neither the third nor the second preset control logic has been executed, then the first preset control logic is executed. If the sum of these two logics is greater than the sum of the indoor ambient temperature and the fourth correction temperature, then the sixth preset control logic is executed. If neither the third nor the second preset control logic has been executed, but the first preset control logic has been executed, then if the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature and the second correction temperature, but less than or equal to the sum of the indoor ambient temperature and the fourth correction temperature, then the current state remains unchanged. This prevents condensation on the refrigerant heat dissipation module at extremely low temperatures, avoiding problems such as air conditioning system vibration and reduced motor reliability caused by fan start-stop.

[0203] According to an embodiment of the present invention, an air conditioning system corresponding to a control device for an air conditioning system is also provided. This air conditioning system may include the control device for the air conditioning system described above.

[0204] Since the processing and functions implemented by the air conditioning system in this embodiment are basically the same as those of the aforementioned device embodiments, principles and examples, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0205] The technical solution of this invention involves an outdoor heat exchanger and an outdoor fan installed on the outdoor unit side of the air conditioning system, and a compressor, a four-way valve, an indoor heat exchanger, a first throttling device (such as a first electronic expansion valve), a second throttling device (such as a second electronic expansion valve), and a refrigerant heat dissipation module installed on the indoor side of the air conditioning system. The refrigerant heat dissipation module is used to dissipate refrigerant heat from the controller of the air conditioning system. The compressor's exhaust port returns to the compressor's suction port after passing through the first and second ports of the four-way valve, the outdoor heat exchanger, the first throttling device (such as a first electronic expansion valve), the refrigerant heat dissipation module, the second throttling device (such as a second electronic expansion valve), the fourth and third ports of the four-way valve. After the air conditioning system starts operating, the compressor... After the operating frequency reaches the target frequency and operates stably for a preset time, the temperature of the refrigerant heat dissipation module is detected. If the detected temperature of the refrigerant heat dissipation module is lower than the sum of the indoor ambient temperature and the first correction temperature, the first preset control logic is executed, i.e., the opening of the second throttling device is increased, until the detected temperature of the refrigerant heat dissipation module is higher than the sum of the indoor ambient temperature and the second correction temperature. If, after the first preset control logic has been executed for a preset time, the detected temperature of the refrigerant heat dissipation module is still lower than the sum of the indoor ambient temperature and the first correction temperature, or if the detected temperature of the refrigerant heat dissipation module is lower than the sum of the indoor ambient temperature and the third correction temperature, then the second preset control logic is executed, i.e., the speed of the outdoor fan is reduced, until the detected temperature of the refrigerant heat dissipation module is higher than the sum of the indoor ambient temperature and the second correction temperature. If the temperature of the refrigerant cooling module is greater than the sum of the indoor ambient temperature and the second correction temperature, or until the detected outdoor fan speed reaches the lower limit of the preset operating speed range; if the detected outdoor fan speed reaches the lower limit of the preset operating speed range, but the detected refrigerant cooling module temperature is still less than the sum of the indoor ambient temperature and the first correction temperature, then the third preset control logic is executed, i.e., the outdoor fan is controlled to reverse; wherein, if the detected refrigerant cooling module temperature is greater than the sum of the indoor ambient temperature and the fourth correction temperature: if the third preset control logic has already been executed, then the fourth preset control logic is executed, i.e., the outdoor fan speed is increased to the speed at which forward rotation is controlled, then if the temperature of the refrigerant cooling module is detected to be greater than the sum of the indoor ambient temperature and the fourth correction temperature: If the temperature is greater than the sum of the indoor ambient temperature and the fourth correction temperature, the fifth preset control logic is executed, which means increasing the speed of the outdoor fan again. If the speed of the outdoor fan has reached the speed before the second preset control logic was executed after the fifth preset control logic is executed, and the detected temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature, then the sixth preset control logic is executed, which means reducing the opening of the second throttling element until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the fourth correction temperature. If the third preset control logic has not been executed, then the second preset control logic is executed. If the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature after the second preset control logic is executed, then the fifth preset control logic is executed.If neither the third nor the second preset control logic has been executed, then the first preset control logic is executed. If the sum of these two logics is greater than the sum of the indoor ambient temperature and the fourth correction temperature, then the sixth preset control logic is executed. If neither the third nor the second preset control logic has been executed, but the first preset control logic has been executed, then if the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature and the second correction temperature, and less than or equal to the sum of the indoor ambient temperature and the fourth correction temperature, then the current state remains unchanged. This prevents condensation on the refrigerant heat dissipation module at extremely low temperatures. By combining the opening of the second throttling device and the speed of the outdoor fan, the refrigerant flow through the refrigerant heat dissipation module can be controlled, thus preventing condensation on the refrigerant heat dissipation module at extremely low temperatures.

[0206] According to an embodiment of the present invention, a storage medium corresponding to a control method for an air conditioning system is also provided. The storage medium includes a stored program, wherein the program controls the device where the storage medium is located to execute the control method for the air conditioning system described above when it is executed.

[0207] Since the processing and functions implemented by the storage medium in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0208] The technical solution of this invention involves an outdoor heat exchanger and an outdoor fan installed on the outdoor unit side of the air conditioning system, and a compressor, a four-way valve, an indoor heat exchanger, a first throttling device (such as a first electronic expansion valve), a second throttling device (such as a second electronic expansion valve), and a refrigerant heat dissipation module installed on the indoor side of the air conditioning system. The refrigerant heat dissipation module is used to dissipate refrigerant heat from the controller of the air conditioning system. The compressor's exhaust port returns to the compressor's suction port after passing through the first and second ports of the four-way valve, the outdoor heat exchanger, the first throttling device (such as a first electronic expansion valve), the refrigerant heat dissipation module, the second throttling device (such as a second electronic expansion valve), the fourth and third ports of the four-way valve. After the air conditioning system starts operating, the compressor... After the operating frequency reaches the target frequency and operates stably for a preset time, the temperature of the refrigerant heat dissipation module is detected. If the detected temperature of the refrigerant heat dissipation module is lower than the sum of the indoor ambient temperature and the first correction temperature, the first preset control logic is executed, i.e., the opening of the second throttling device is increased, until the detected temperature of the refrigerant heat dissipation module is higher than the sum of the indoor ambient temperature and the second correction temperature. If, after the first preset control logic has been executed for a preset time, the detected temperature of the refrigerant heat dissipation module is still lower than the sum of the indoor ambient temperature and the first correction temperature, or if the detected temperature of the refrigerant heat dissipation module is lower than the sum of the indoor ambient temperature and the third correction temperature, then the second preset control logic is executed, i.e., the speed of the outdoor fan is reduced, until the detected temperature of the refrigerant heat dissipation module is higher than the sum of the indoor ambient temperature and the second correction temperature. If the temperature of the refrigerant cooling module is greater than the sum of the indoor ambient temperature and the second correction temperature, or until the detected outdoor fan speed reaches the lower limit of the preset operating speed range; if the detected outdoor fan speed reaches the lower limit of the preset operating speed range, but the detected refrigerant cooling module temperature is still less than the sum of the indoor ambient temperature and the first correction temperature, then the third preset control logic is executed, i.e., the outdoor fan is controlled to reverse; wherein, if the detected refrigerant cooling module temperature is greater than the sum of the indoor ambient temperature and the fourth correction temperature: if the third preset control logic has already been executed, then the fourth preset control logic is executed, i.e., the outdoor fan speed is increased to the speed at which forward rotation is controlled, then if the temperature of the refrigerant cooling module is detected to be greater than the sum of the indoor ambient temperature and the fourth correction temperature: If the temperature is greater than the sum of the indoor ambient temperature and the fourth correction temperature, the fifth preset control logic is executed, which means increasing the speed of the outdoor fan again. If the speed of the outdoor fan has reached the speed before the second preset control logic was executed after the fifth preset control logic is executed, and the detected temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature, then the sixth preset control logic is executed, which means reducing the opening of the second throttling element until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature and the fourth correction temperature. If the third preset control logic has not been executed, then the second preset control logic is executed. If the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature and the fourth correction temperature after the second preset control logic is executed, then the fifth preset control logic is executed.If neither the third nor the second preset control logic has been executed, then the first preset control logic is executed. If the sum of these two logics is greater than the sum of the indoor ambient temperature and the fourth correction temperature, then the sixth preset control logic is executed. If neither the third nor the second preset control logic has been executed, but the first preset control logic has been executed, then if the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature and the second correction temperature, and less than or equal to the sum of the indoor ambient temperature and the fourth correction temperature, then the current state remains unchanged. This prevents condensation on the refrigerant heat dissipation module at extremely low temperatures. Without increasing costs, this solves the problem of condensation on the refrigerant heat dissipation module during low-temperature cooling in air conditioning systems, improving the reliability of the air conditioning system and expanding the application range of the refrigerant heat dissipation module.

[0209] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous methods can be freely combined and superimposed.

[0210] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A control method for an air conditioning system, characterized in that, The air conditioning system includes: an indoor unit and an outdoor unit; the outdoor unit includes: an outdoor heat exchanger and an outdoor fan; the indoor unit includes: an indoor heat exchanger and an indoor fan, a compressor, a four-way valve, a first throttling device, a second throttling device, a refrigerant heat dissipation device, and a controller; wherein, the exhaust port of the compressor, after passing through the first and second valve ports of the four-way valve, the outdoor heat exchanger, the second throttling device, the refrigerant heat dissipation device, the first throttling device, and the indoor heat exchanger, is connected to the fourth valve port of the four-way valve; the third valve port of the four-way valve returns to the suction port of the compressor; the controller is used to control the outdoor unit and the indoor unit; the refrigerant heat dissipation device is used to dissipate refrigerant heat from the controller; the control method of the air conditioning system includes: When the air conditioning system is turned on and running, after the compressor's operating frequency has reached the preset target frequency and the compressor's operating time has reached the preset target time, the temperature of the refrigerant heat dissipation module is obtained, and the indoor ambient temperature of the air conditioning system is obtained. Based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, a preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby adjusting the outlet temperature of the refrigerant heat dissipation module. The preset control logic includes: a first control logic, a second control logic, a third control logic, a fourth control logic, a fifth control logic, and a sixth control logic; The execution of the preset control logic includes executing at least one of the following: Execute the first control logic, that is, the logic that controls the opening degree of the second throttling device to increase; The second control logic is executed, namely, the logic that controls the speed of the outdoor fan to decrease. Execute the third control logic, namely, the logic to control the outdoor fan to reverse; Execute the fourth control logic, namely, the logic that controls the outdoor fan to reverse and increase its rotational speed; The fifth control logic is executed, namely, the logic that controls the outdoor fan to reverse and further increase its rotational speed; Execute the sixth control logic, namely, the logic that controls the opening degree of the second throttling device to decrease; The preset correction temperature range includes: a first correction temperature, a second correction temperature, a third correction temperature, and a fourth correction temperature; Based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module, including: If the execution time of the first control logic has reached the preset execution time, and it is determined that the following conditions are not met: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature, then it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth corrected temperature. After executing the second control logic, if it is determined that the following conditions are not met: the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. After executing the third control logic, it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; If it is determined that the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then it is determined whether the third control logic has been executed: If so, the fourth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse reaches the upper limit of the preset reverse operation speed range. Otherwise, determine whether the second control logic has been executed: if so, execute the fifth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse reaches the speed of the outdoor fan in forward rotation before the second control logic is executed; otherwise, determine whether the first control logic has been executed: if so, execute the sixth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

2. The control method for the air conditioning system according to claim 1, characterized in that, The second correction temperature is greater than the first correction temperature; Based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The method further includes: Determine whether the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature; If it is determined that the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then the first control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature.

3. The control method for the air conditioning system according to claim 2, characterized in that, Based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The method further includes: If the execution time of the first control logic has reached the preset execution time, then determine whether the following conditions are met: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature; the third corrected temperature is greater than the first corrected temperature. If the execution time of the first control logic has reached the preset execution time, and it is determined that: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature, then the second control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed.

4. The control method for the air conditioning system according to claim 3, characterized in that, Based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The method further includes: After executing the second control logic, it is determined whether the following conditions are met: the speed of the outdoor fan reaches the lower limit of the preset forward operating speed, and the temperature of the refrigerant heat dissipation module is less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature. After executing the second control logic, if it is determined that the following conditions are met: the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then the third control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, or until the reverse rotation speed of the outdoor fan reaches the lower limit of the preset reverse rotation speed range.

5. The control method for an air conditioning system according to claim 1, characterized in that, Based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The method further includes: After executing the fourth control logic, determine whether the following conditions are met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. If it is determined that the following conditions are met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan rotates forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the fifth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed at which the outdoor fan reverses reaches the speed at which the outdoor fan rotates forward before the second control logic is executed.

6. The control method for an air conditioning system according to claim 1 or 5, characterized in that, Based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The method further includes: After executing the fifth control logic, it is determined whether the following conditions are met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan rotates forward before the second control logic is executed, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; If it is determined that the following conditions are met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan rotates forward before the second control logic is executed, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the sixth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

7. The control method for an air conditioning system according to claim 1 or 5, characterized in that, Based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The method further includes: If neither the second control logic nor the third control logic has been executed, but the first control logic has been executed, and the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the fourth corrected temperature, then the air conditioning system is controlled to maintain its current state.

8. The control method for an air conditioning system according to claim 6, characterized in that, Based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, preset control logic is executed to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The method further includes: If neither the second control logic nor the third control logic has been executed, but the first control logic has been executed, and the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the fourth corrected temperature, then the air conditioning system is controlled to maintain its current state.

9. The control method for an air conditioning system according to any one of claims 1 to 5 and 8, characterized in that, in, Executing the first control logic, namely, the logic of controlling the increase of the opening degree of the second throttling device, includes: adjusting the opening degree of the second throttling device at a rate of increasing the first preset opening degree at a first preset time interval until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second preset correction temperature; wherein, the first preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, The second control logic, namely, the logic of controlling the outdoor fan to reduce its forward rotation speed, includes: adjusting the outdoor fan's forward rotation speed at a rate that decreases by a first preset speed every second preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed; wherein, the first preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range; And / or, Executing the third control logic, namely, the logic for controlling the outdoor fan to reverse, includes: controlling the outdoor fan to reverse at a preset initial speed, and then adjusting the speed of the outdoor fan to reverse at a rate that decreases by a second preset speed every third preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the speed of the outdoor fan to reverse reaches the lower limit of the preset reverse operation speed range; wherein, the second preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature belong within the preset temperature range; And / or, The execution of the fourth control logic, namely, the logic for increasing the speed of the outdoor fan in reverse rotation, includes: adjusting the speed of the outdoor fan in reverse rotation at a rate that increases by a third preset speed every fourth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse rotation reaches the upper limit of the preset reverse operation speed range; wherein, the third preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, Executing the fifth control logic, namely, the logic of further increasing the rotational speed of the outdoor fan in reverse, includes: adjusting the rotational speed of the outdoor fan in reverse at a rate that increases by a fourth preset speed every fifth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the rotational speed of the outdoor fan in forward rotation before the execution of the second control logic; wherein, the fourth preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range; And / or, The execution of the sixth control logic, namely the logic of controlling the reduction of the opening of the second throttling device, includes: adjusting the opening of the second throttling device at a rate of decreasing the second preset opening at a third preset time interval until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; the second preset opening is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range.

10. The control method for an air conditioning system according to claim 6, characterized in that, in, Executing the first control logic, namely, the logic of controlling the increase of the opening degree of the second throttling device, includes: adjusting the opening degree of the second throttling device at a rate of increasing the first preset opening degree at a first preset time interval until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second preset correction temperature; wherein, the first preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, The second control logic, namely, the logic of controlling the outdoor fan to reduce its forward rotation speed, includes: adjusting the outdoor fan's forward rotation speed at a rate that decreases by a first preset speed every second preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed; wherein, the first preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range; And / or, Executing the third control logic, namely, the logic for controlling the outdoor fan to reverse, includes: controlling the outdoor fan to reverse at a preset initial speed, and then adjusting the speed of the outdoor fan to reverse at a rate that decreases by a second preset speed every third preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the speed of the outdoor fan to reverse reaches the lower limit of the preset reverse operation speed range; wherein, the second preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature belong within the preset temperature range; And / or, The execution of the fourth control logic, namely, the logic for increasing the speed of the outdoor fan in reverse rotation, includes: adjusting the speed of the outdoor fan in reverse rotation at a rate that increases by a third preset speed every fourth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse rotation reaches the upper limit of the preset reverse operation speed range; wherein, the third preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, Executing the fifth control logic, namely, the logic of further increasing the rotational speed of the outdoor fan in reverse, includes: adjusting the rotational speed of the outdoor fan in reverse at a rate that increases by a fourth preset speed every fifth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the rotational speed of the outdoor fan in forward rotation before the execution of the second control logic; wherein, the fourth preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range; And / or, The execution of the sixth control logic, namely the logic of controlling the reduction of the opening of the second throttling device, includes: adjusting the opening of the second throttling device at a rate of decreasing the second preset opening at a third preset time interval until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; the second preset opening is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range.

11. The control method for an air conditioning system according to claim 7, characterized in that, in, Executing the first control logic, namely, the logic of controlling the increase of the opening degree of the second throttling device, includes: adjusting the opening degree of the second throttling device at a rate of increasing the first preset opening degree at a first preset time interval until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second preset correction temperature; wherein, the first preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, The second control logic, namely, the logic of controlling the outdoor fan to reduce its forward rotation speed, includes: adjusting the outdoor fan's forward rotation speed at a rate that decreases by a first preset speed every second preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed; wherein, the first preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range; And / or, Executing the third control logic, namely, the logic for controlling the outdoor fan to reverse, includes: controlling the outdoor fan to reverse at a preset initial speed, and then adjusting the speed of the outdoor fan to reverse at a rate that decreases by a second preset speed every third preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the speed of the outdoor fan to reverse reaches the lower limit of the preset reverse operation speed range; wherein, the second preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature belong within the preset temperature range; And / or, The execution of the fourth control logic, namely, the logic for increasing the speed of the outdoor fan in reverse rotation, includes: adjusting the speed of the outdoor fan in reverse rotation at a rate that increases by a third preset speed every fourth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse rotation reaches the upper limit of the preset reverse operation speed range; wherein, the third preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, Executing the fifth control logic, namely, the logic of further increasing the rotational speed of the outdoor fan in reverse, includes: adjusting the rotational speed of the outdoor fan in reverse at a rate that increases by a fourth preset speed every fifth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the rotational speed of the outdoor fan in forward rotation before the execution of the second control logic; wherein, the fourth preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range; And / or, The execution of the sixth control logic, namely the logic of controlling the reduction of the opening of the second throttling device, includes: adjusting the opening of the second throttling device at a rate of decreasing the second preset opening at a third preset time interval until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; the second preset opening is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range.

12. A control device for an air conditioning system, characterized in that, The air conditioning system includes: an indoor unit and an outdoor unit; the outdoor unit includes: an outdoor heat exchanger and an outdoor fan; the indoor unit includes: an indoor heat exchanger and an indoor fan, a compressor, a four-way valve, a first throttling device, a second throttling device, a refrigerant cooling device, and a controller; wherein, the exhaust port of the compressor, after passing through the first and second valve ports of the four-way valve, the outdoor heat exchanger, the second throttling device, the refrigerant cooling device, the first throttling device, and the indoor heat exchanger, is connected to the fourth valve port of the four-way valve; the third valve port of the four-way valve returns to the suction port of the compressor; the controller is used to control the outdoor unit and the indoor unit; the refrigerant cooling device is used to cool the controller with refrigerant; the control device of the air conditioning system includes: The acquisition unit is configured to acquire the temperature of the refrigerant heat dissipation module and the indoor ambient temperature of the air conditioning system after the compressor's operating frequency has reached a preset target frequency and the compressor's operating time has reached a preset target time, when the air conditioning system is turned on and running. The control unit is configured to execute preset control logic based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, so as to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby adjusting the outlet temperature of the refrigerant heat dissipation module. The preset control logic includes: a first control logic, a second control logic, a third control logic, a fourth control logic, a fifth control logic, and a sixth control logic; The control unit executes preset control logic, including executing at least one of the following: Execute the first control logic, that is, the logic that controls the opening degree of the second throttling device to increase; The second control logic is executed, namely, the logic that controls the speed of the outdoor fan to decrease. Execute the third control logic, namely, the logic to control the outdoor fan to reverse; Execute the fourth control logic, namely, the logic that controls the outdoor fan to reverse and increase its rotational speed; The fifth control logic is executed, namely, the logic that controls the outdoor fan to reverse and further increase its rotational speed; Execute the sixth control logic, namely, the logic that controls the opening degree of the second throttling device to decrease; The preset correction temperature range includes: a first correction temperature, a second correction temperature, a third correction temperature, and a fourth correction temperature; The control unit, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module, including: If the execution time of the first control logic has reached the preset execution time, and it is determined that the following conditions are not met: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature, then it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth corrected temperature. After executing the second control logic, if it is determined that the following conditions are not met: the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. After executing the third control logic, it is determined whether the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; If it is determined that the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then it is determined whether the third control logic has been executed: If so, the fourth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse reaches the upper limit of the preset reverse operation speed range. Otherwise, determine whether the second control logic has been executed: if so, execute the fifth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse reaches the speed of the outdoor fan in forward rotation before the second control logic is executed; otherwise, determine whether the first control logic has been executed: if so, execute the sixth control logic until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

13. The control device for the air conditioning system according to claim 12, characterized in that, The second correction temperature is greater than the first correction temperature; The control unit, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit also includes: Determine whether the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature; If it is determined that the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then the first control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature.

14. The control device for the air conditioning system according to claim 13, characterized in that, The control unit, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit also includes: If the execution time of the first control logic has reached the preset execution time, then determine whether the following conditions are met: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature; the third corrected temperature is greater than the first corrected temperature. If the execution time of the first control logic has reached the preset execution time, and it is determined that: the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature, or the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the third corrected temperature, then the second control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed.

15. The control device for an air conditioning system according to claim 14, characterized in that, The control unit, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit also includes: After executing the second control logic, it is determined whether the following conditions are met: the speed of the outdoor fan reaches the lower limit of the preset forward operating speed, and the temperature of the refrigerant heat dissipation module is less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the first corrected temperature. After executing the second control logic, if it is determined that the following conditions are met: the forward rotation speed of the outdoor fan reaches the lower limit of the preset forward rotation speed, and the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the first correction temperature, then the third control logic is executed until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, or until the reverse rotation speed of the outdoor fan reaches the lower limit of the preset reverse rotation speed range.

16. The control device for an air conditioning system according to claim 12, characterized in that, The control unit, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit also includes: After executing the fourth control logic, determine whether the following conditions are met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan is controlled to rotate forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature. If it is determined that the following conditions are met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan rotates forward, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the fifth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed at which the outdoor fan reverses reaches the speed at which the outdoor fan rotates forward before the second control logic is executed.

17. The control device for an air conditioning system according to claim 12 or 16, characterized in that, The control unit, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit also includes: After executing the fifth control logic, it is determined whether the following conditions are met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan rotates forward before the second control logic is executed, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; If it is determined that the following conditions are met: the speed at which the outdoor fan reverses has reached the speed at which the outdoor fan rotates forward before the second control logic is executed, and the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, then the sixth control logic is executed until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature.

18. The control device for an air conditioning system according to any one of claims 12, 14 to 16, characterized in that, The control unit, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit also includes: If neither the second control logic nor the third control logic has been executed, but the first control logic has been executed, and the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the fourth corrected temperature, then the air conditioning system is controlled to maintain its current state.

19. The control device for an air conditioning system according to claim 17, characterized in that, The control unit, based on the temperature of the refrigerant heat dissipation module, the indoor ambient temperature of the air conditioning system, and a preset correction temperature range, executes preset control logic to adjust at least one of the opening degree of the second throttling device and the speed of the outdoor fan, thereby regulating the outlet temperature of the refrigerant heat dissipation module. The control unit also includes: If neither the second control logic nor the third control logic has been executed, but the first control logic has been executed, and the temperature of the refrigerant heat dissipation module is greater than or equal to the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, and less than or equal to the sum of the indoor ambient temperature of the air conditioning system and the fourth corrected temperature, then the air conditioning system is controlled to maintain its current state.

20. The control device for an air conditioning system according to any one of claims 12 to 16 and 19, characterized in that, in, The control unit executes the first control logic, namely, the logic for controlling the increase of the opening degree of the second throttling device, including: adjusting the opening degree of the second throttling device at a rate of increasing the first preset opening degree at a first preset time interval until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second preset correction temperature; wherein, the first preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, The control unit executes the second control logic, namely, the logic of controlling the outdoor fan to reduce its forward rotation speed, including: adjusting the outdoor fan's forward rotation speed at a rate of decreasing the first preset speed every second preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed; wherein, the first preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range; And / or, The control unit executes the third control logic, namely, the logic for controlling the outdoor fan to reverse, including: controlling the outdoor fan to reverse at a preset initial speed, and then adjusting the speed of the outdoor fan to reverse at a rate that decreases by a second preset speed every third preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the speed of the outdoor fan to reverse reaches the lower limit of the preset reverse operation speed range; wherein, the second preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature belongs within the preset temperature range; And / or, The execution of the fourth control logic, namely, the logic for increasing the speed of the outdoor fan in reverse rotation, includes: adjusting the speed of the outdoor fan in reverse rotation at a rate that increases by a third preset speed every fourth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse rotation reaches the upper limit of the preset reverse operation speed range; wherein, the third preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, Executing the fifth control logic, namely, the logic of further increasing the rotational speed of the outdoor fan in reverse, includes: adjusting the rotational speed of the outdoor fan in reverse at a rate that increases by a fourth preset speed every fifth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the rotational speed of the outdoor fan in forward rotation before the execution of the second control logic; wherein, the fourth preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range; And / or, The execution of the sixth control logic, namely the logic of controlling the reduction of the opening of the second throttling device, includes: adjusting the opening of the second throttling device at a rate of decreasing the second preset opening at a third preset time interval until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; the second preset opening is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range.

21. The control device for an air conditioning system according to claim 17, characterized in that, in, The control unit executes the first control logic, namely, the logic for controlling the increase of the opening degree of the second throttling device, including: adjusting the opening degree of the second throttling device at a rate of increasing the first preset opening degree at a first preset time interval until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second preset correction temperature; wherein, the first preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, The control unit executes the second control logic, namely, the logic of controlling the outdoor fan to reduce its forward rotation speed, including: adjusting the outdoor fan's forward rotation speed at a rate of decreasing the first preset speed every second preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed; wherein, the first preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range; And / or, The control unit executes the third control logic, namely, the logic for controlling the outdoor fan to reverse, including: controlling the outdoor fan to reverse at a preset initial speed, and then adjusting the speed of the outdoor fan to reverse at a rate that decreases by a second preset speed every third preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the speed of the outdoor fan to reverse reaches the lower limit of the preset reverse operation speed range; wherein, the second preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature belongs within the preset temperature range; And / or, The execution of the fourth control logic, namely, the logic for increasing the speed of the outdoor fan in reverse rotation, includes: adjusting the speed of the outdoor fan in reverse rotation at a rate that increases by a third preset speed every fourth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse rotation reaches the upper limit of the preset reverse operation speed range; wherein, the third preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, Executing the fifth control logic, namely, the logic of further increasing the rotational speed of the outdoor fan in reverse, includes: adjusting the rotational speed of the outdoor fan in reverse at a rate that increases by a fourth preset speed every fifth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the rotational speed of the outdoor fan in forward rotation before the execution of the second control logic; wherein, the fourth preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range; And / or, The execution of the sixth control logic, namely the logic of controlling the reduction of the opening of the second throttling device, includes: adjusting the opening of the second throttling device at a rate of decreasing the second preset opening at a third preset time interval until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; the second preset opening is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range.

22. The control device for an air conditioning system according to claim 18, characterized in that, in, The control unit executes the first control logic, namely, the logic for controlling the increase of the opening degree of the second throttling device, including: adjusting the opening degree of the second throttling device at a rate of increasing the first preset opening degree at a first preset time interval until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second preset correction temperature; wherein, the first preset opening degree is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, The control unit executes the second control logic, namely, the logic of controlling the outdoor fan to reduce its forward rotation speed, including: adjusting the outdoor fan's forward rotation speed at a rate of decreasing the first preset speed every second preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature, and the outdoor fan's forward rotation speed reaches the lower limit of the preset forward rotation speed; wherein, the first preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range; And / or, The control unit executes the third control logic, namely, the logic for controlling the outdoor fan to reverse, including: controlling the outdoor fan to reverse at a preset initial speed, and then adjusting the speed of the outdoor fan to reverse at a rate that decreases by a second preset speed every third preset time interval, until the temperature of the refrigerant heat dissipation module is greater than the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature, or until the speed of the outdoor fan to reverse reaches the lower limit of the preset reverse operation speed range; wherein, the second preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second corrected temperature belongs within the preset temperature range; And / or, The execution of the fourth control logic, namely, the logic for increasing the speed of the outdoor fan in reverse rotation, includes: adjusting the speed of the outdoor fan in reverse rotation at a rate that increases by a third preset speed every fourth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the speed of the outdoor fan in reverse rotation reaches the upper limit of the preset reverse operation speed range; wherein, the third preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature belongs within the preset temperature range; And / or, Executing the fifth control logic, namely, the logic of further increasing the rotational speed of the outdoor fan in reverse, includes: adjusting the rotational speed of the outdoor fan in reverse at a rate that increases by a fourth preset speed every fifth preset time interval, until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature, or until the rotational speed of the outdoor fan in reverse reaches the rotational speed of the outdoor fan in forward rotation before the execution of the second control logic; wherein, the fourth preset speed is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within a preset temperature range; And / or, The execution of the sixth control logic, namely the logic of controlling the reduction of the opening of the second throttling device, includes: adjusting the opening of the second throttling device at a rate of decreasing the second preset opening at a third preset time interval until the temperature of the refrigerant heat dissipation module is less than the sum of the indoor ambient temperature of the air conditioning system and the fourth correction temperature; the second preset opening is determined based on the temperature range to which the difference between the temperature of the refrigerant heat dissipation module and the sum of the indoor ambient temperature of the air conditioning system and the second correction temperature falls within the preset temperature range.

23. An air conditioning system, characterized in that, include: The control device for the air conditioning system as described in any one of claims 12 to 22.

24. A storage medium, characterized in that, The storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the storage medium to perform the control method of the air conditioning system according to any one of claims 1 to 11.

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