Air conditioning system and control method, device and computer readable storage medium thereof

Abstract

The application relates to an air conditioning system, a control method and device of the air conditioning system and a computer readable storage medium, and relates to the technical field of air conditioning equipment. In the air conditioning system, the first end of a mixed flow temperature regulating assembly is communicated with the first end of an outdoor unit, the second end is communicated with the first end of a first indoor heat exchanger through a first switch branch and is communicated with the first end of a second indoor heat exchanger through a second switch branch, and the second ends of the two indoor heat exchangers are both communicated with the second end of the outdoor unit. A temperature detection module is used for detecting the inlet pipe temperature of the second end of the mixed flow temperature regulating assembly. A control module is used for controlling the conduction state of the first switch branch and the second switch branch according to the corresponding operation mode of the received operation control instruction, and regulating the mixed flow temperature regulating assembly according to the inlet pipe temperature and the air dew point temperature, so that the difference between the two temperatures is in the corresponding difference range. The air conditioning system can consider the dehumidification and cooling performance.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and in particular to an air conditioning system, a control method for an air conditioning system, an apparatus for an air conditioning system, and a computer-readable storage medium. Background Technology

[0002] Most air conditioning systems employ a single evaporator structure, achieving cooling and dehumidification by lowering the evaporator surface temperature. However, in high-humidity summer environments, when users turn on the air conditioner for cooling, the evaporator wall temperature drops below the air dew point due to refrigerant throttling. Moisture in the air continuously condenses and precipitates on the coils, causing excessive dehumidification and resulting in dry indoor air, leading to poor comfort. Conversely, in dry, high-temperature environments where only cooling is needed and dehumidification is not required, raising the evaporator temperature above the dew point to stop dehumidification significantly reduces the cooling capacity of the single evaporator, resulting in decreased cooling performance. Therefore, the performance of existing air conditioning systems is insufficient to meet user needs. Summary of the Invention

[0003] Therefore, it is necessary to provide an air conditioning system, an air conditioning system control method, an apparatus, and a computer-readable storage medium that can improve the performance of the above-mentioned technical problems.

[0004] In a first aspect, this application provides an air conditioning system, comprising: a control module, an outdoor unit, a first indoor heat exchanger, a second indoor heat exchanger, a mixed-flow temperature control component, a first switch branch, a second switch branch, and a temperature detection module; the first end of the mixed-flow temperature control component is connected to the first end of the outdoor unit, the second end of the mixed-flow temperature control component is connected to the first end of the first indoor heat exchanger via the first switch branch and to the first end of the second indoor heat exchanger via the second switch branch, and the second ends of the first indoor heat exchanger and the second indoor heat exchanger are both connected to the second end of the outdoor unit;

[0005] The temperature detection module is used to detect the inlet temperature of the second end of the mixed-flow temperature control component;

[0006] The control module is electrically connected to the temperature detection module and the mixed-flow temperature control component. It is used to acquire operation control commands, control the conduction state of the first switch branch and the second switch branch according to the operation mode corresponding to the operation control commands, and adjust the mixed-flow temperature control component according to the inlet pipe temperature and the air dew point temperature so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operation mode.

[0007] In one embodiment, when the operating mode corresponding to the operating control command is the cooling without dehumidification mode, the control module controls both the first switch branch and the second switch branch to be turned on, and adjusts the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the cooling without dehumidification mode.

[0008] In one embodiment, the first switch branch is provided with a first solenoid valve electrically connected to the control module, and the second switch branch is provided with a second solenoid valve electrically connected to the control module; the control module controls the on or off state of the first switch branch by controlling the on / off state of the first solenoid valve, and controls the on or off state of the second switch branch by controlling the on / off state of the second solenoid valve.

[0009] In one embodiment, the first switch branch is further provided with a first throttle valve electrically connected to the control module; the temperature detection module is further used to detect the first throttle temperature after throttling by the first throttle valve.

[0010] When the operating mode corresponding to the operation control command is the deep dehumidification mode, the control module controls the first solenoid valve, the second solenoid valve and the first throttle valve to open, and adjusts the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the inlet pipe temperature is lower than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the first difference range corresponding to the deep dehumidification mode.

[0011] The control module is further configured to control the throttling opening of the first throttling valve so that the first throttling temperature is less than the air dew point temperature, and the difference between the first throttling temperature and the air dew point temperature is within the second difference range corresponding to the deep dehumidification mode; wherein, the minimum value of the second difference range is greater than the maximum value of the first difference range.

[0012] In one embodiment, the air conditioning system further includes a first switching assembly and a first throttling branch; the second end of the first indoor heat exchanger is connected to the first end of the first indoor heat exchanger via the first throttling branch, and the second end of the second indoor heat exchanger is connected to the second end of the outdoor unit via the first switching assembly;

[0013] When the operating mode corresponding to the operation control command is the dehumidification without cooling mode, the control module controls the second solenoid valve to close, the first switch assembly to close, the first solenoid valve to open, and the first throttling branch to be flow-limited and conducted according to the dehumidification without cooling mode. It also adjusts the mixed flow temperature control assembly according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the third difference range corresponding to the dehumidification without cooling mode.

[0014] In one embodiment, the temperature detection module is further configured to detect the temperature of the second throttling branch after throttling in the first throttling branch;

[0015] In the dehumidification without cooling mode, the control module is further configured to adjust the throttling state of the first throttling branch according to the second throttling temperature and the air dew point temperature, so that the second throttling temperature is less than the air dew point temperature, and the difference between the second throttling temperature and the air dew point temperature is within the four difference range corresponding to the dehumidification without cooling mode.

[0016] In one embodiment, the first throttling branch includes a second throttling valve and a third solenoid valve electrically connected to the control module, and the second end of the first indoor heat exchanger is connected to the first end of the first indoor heat exchanger via the third solenoid valve and the second throttling valve.

[0017] In one embodiment, the air conditioning system further includes a fourth solenoid valve, the first end of which is connected between the second throttle valve and the third solenoid valve, and the second end of which is connected to the first end of the first indoor heat exchanger.

[0018] In one embodiment, the mixed-flow temperature control assembly includes a first electromagnetic bypass valve and a third throttle valve electrically connected to the control module; a first end of the first electromagnetic bypass valve and a first end of the third throttle valve are connected to a first end of the outdoor unit; the common end of the connection between the second end of the first electromagnetic bypass valve and the second end of the third throttle valve is connected to the first switch branch and the second switch branch.

[0019] Secondly, this application also provides a control method for an air conditioning system, the air conditioning system including an outdoor unit, a first indoor heat exchanger, a second indoor heat exchanger, a mixed-flow temperature control component, a first switch branch, and a second switch branch; the first end of the mixed-flow temperature control component is connected to the first end of the outdoor unit, the second end of the mixed-flow temperature control component is connected to the first end of the first indoor heat exchanger via the first switch branch and to the first end of the second indoor heat exchanger via the second switch branch, and the second ends of the first indoor heat exchanger and the second indoor heat exchanger are both connected to the second end of the outdoor unit; the control method includes:

[0020] Obtain operation control commands;

[0021] The conduction state of the first switch branch and the second switch branch is controlled according to the operating mode corresponding to the operating control command, and the mixing temperature control component is adjusted according to the inlet pipe temperature and the air dew point temperature so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode.

[0022] In one embodiment, when the operating mode corresponding to the operating control command is a cooling-without-dehumidifying mode, the step of controlling the conduction state of the first switch branch and the second switch branch according to the operating mode corresponding to the operating control command, and adjusting the mixed-flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode, includes:

[0023] According to the cooling-without-dehumidification mode, both the first and second switch branches are turned on, and the mixed-flow temperature control component is adjusted according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the cooling-without-dehumidification mode.

[0024] In one embodiment, the first switch branch is provided with a first solenoid valve, and the second switch branch is provided with a second solenoid valve; the first switch branch is also provided with a first throttle valve; when the operating mode corresponding to the operating control command is a deep dehumidification mode, the step of controlling the conduction state of the first switch branch and the second switch branch according to the operating mode corresponding to the operating control command, and adjusting the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode, includes:

[0025] According to the deep dehumidification mode, the first solenoid valve, the second solenoid valve and the first throttle valve are all opened, and the mixed flow temperature control component is adjusted according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is lower than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the first difference range corresponding to the deep dehumidification mode.

[0026] The throttling opening of the first throttling valve is controlled so that the first throttling temperature is lower than the air dew point temperature, and the difference between the first throttling temperature and the air dew point temperature is within the second difference range corresponding to the deep dehumidification mode; wherein, the minimum value of the second difference range is greater than the maximum value of the first difference range; the first throttling temperature is the temperature after throttling by the first throttling valve.

[0027] In one embodiment, the first switch branch is provided with a first solenoid valve, and the second switch branch is provided with a second solenoid valve; the air conditioning system further includes a first switch assembly and a first throttling branch; the second end of the first indoor heat exchanger is connected to the first end of the first indoor heat exchanger via the first throttling branch, and the second end of the second indoor heat exchanger is connected to the second end of the outdoor unit via the first switch assembly;

[0028] When the operating mode corresponding to the operating control command is dehumidification without cooling mode, the step of controlling the conduction state of the first switch branch and the second switch branch according to the operating mode corresponding to the operating control command, and adjusting the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode, includes:

[0029] According to the dehumidification without cooling mode, the second solenoid valve is closed, the first switch assembly is closed, the first solenoid valve is opened, and the first throttling branch is limited and connected. The mixed flow temperature control assembly is adjusted according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the third difference range corresponding to the dehumidification without cooling mode.

[0030] In one embodiment, the control method further includes:

[0031] In the dehumidification without cooling mode, the throttling state of the first throttling branch is adjusted according to the second throttling temperature and the air dew point temperature, so that the second throttling temperature is less than the air dew point temperature, and the difference between the second throttling temperature and the air dew point temperature is within the four difference range corresponding to the dehumidification without cooling mode; the second throttling temperature is the temperature after throttling by the first throttling branch.

[0032] Thirdly, this application also provides a control device for an air conditioning system, the air conditioning system including an outdoor unit, a first indoor heat exchanger, a second indoor heat exchanger, a mixed-flow temperature control component, a first switch branch, a second switch branch, and a temperature detection module; the first end of the mixed-flow temperature control component is connected to the first end of the outdoor unit, the second end of the mixed-flow temperature control component is connected to the first end of the first indoor heat exchanger via the first switch branch and to the first end of the second indoor heat exchanger via the second switch branch, and the second ends of the first indoor heat exchanger and the second indoor heat exchanger are both connected to the second end of the outdoor unit; the control device includes:

[0033] The instruction acquisition module is used to acquire operation control instructions;

[0034] The mode control module is used to control the conduction state of the first switch branch and the second switch branch according to the operating mode corresponding to the operating control command, and to adjust the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode; wherein, the inlet pipe temperature is the temperature of the second end of the mixed flow temperature control component.

[0035] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0036] The instruction acquisition module is used to acquire operation control instructions;

[0037] The mode control module is used to control the conduction state of the first switch branch and the second switch branch according to the operating mode corresponding to the operating control command, and to adjust the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode; wherein, the inlet pipe temperature is the temperature of the second end of the mixed flow temperature control component.

[0038] The aforementioned air conditioning system, its control method, apparatus, and computer-readable storage medium include a control module, an outdoor unit, a first indoor heat exchanger, a second indoor heat exchanger, a mixed-flow temperature control component, a first switch branch, a second switch branch, and a temperature detection module. The first end of the mixed-flow temperature control component is connected to the first end of the outdoor unit, and its second end is connected to the first end of the first indoor heat exchanger via the first switch branch and to the first end of the second indoor heat exchanger via the second switch branch. The second ends of both indoor heat exchangers are connected to the second end of the outdoor unit. The temperature detection module detects the inlet pipe temperature at the second end of the mixed-flow temperature control component. The control module is electrically connected to the temperature detection module and the mixed-flow temperature control component. It acquires operating control commands, controls the conduction state of the first and second switch branches according to the operating mode corresponding to the operating control commands, and adjusts the mixed-flow temperature control component according to the inlet pipe temperature and the air dew point temperature to ensure that the difference between the inlet pipe temperature and the air dew point temperature is within the range corresponding to the operating mode. This improves the performance of the air conditioning system. For example, when the operating mode corresponding to the operation control command is cooling without dehumidification, the control module can simultaneously activate the first and second switch branches, connecting the first and second indoor heat exchangers in parallel. When the inlet pipe temperature is higher than the air dew point temperature, no condensation will form on the heat exchanger surface. At this time, the simultaneous operation of both indoor units increases the heat exchange area, ensuring sufficient cooling capacity. Furthermore, by connecting the two indoor heat exchangers in parallel, the system resistance is lower, the unit's operating power is reduced, and overall energy efficiency is improved. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the air conditioning system modules in one embodiment;

[0041] Figure 2 This is a schematic diagram of the air conditioning system in one embodiment;

[0042] Figure 3 This is a schematic diagram of the refrigerant flow direction of an air conditioning system in one embodiment;

[0043] Figure 4 This is a schematic diagram of the refrigerant flow direction of the air conditioning system in another embodiment;

[0044] Figure 5 This is a schematic diagram of the refrigerant flow direction of the air conditioning system in another embodiment;

[0045] Figure 6 This is a flowchart illustrating a control method for an air conditioning system in one embodiment;

[0046] Figure 7 This is a structural block diagram of the control device of an air conditioning system in one embodiment. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0049] It is understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0050] It is understandable that "at least one" refers to one or more, and "multiple" refers to two or more. "At least a part of an element" refers to part or all of an element.

[0051] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising / including” or “having,” etc., specify the presence of the stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. Meanwhile, the term “and / or” as used in this specification includes any and all combinations of the associated listed items.

[0052] This application provides an air conditioning system, such as... Figure 1As shown, the system includes an outdoor unit 100, a first indoor heat exchanger 200, a second indoor heat exchanger 300, a mixed-flow temperature control assembly 400, a first switch branch, a second switch branch, a temperature detection module (not shown), and a control module (not shown). The first end of the mixed-flow temperature control assembly 400 is connected to the first end of the outdoor unit 100. The second end of the mixed-flow temperature control assembly 400 is connected to the first end of the first indoor heat exchanger 200 via the first switch branch. The second end of the mixed-flow temperature control assembly 400 is also connected to the first end of the second indoor heat exchanger 300 via the second switch branch. Both the second ends of the first indoor heat exchanger 200 and the second ends of the second indoor heat exchanger 300 are connected to the second end of the outdoor unit 100.

[0053] The temperature detection module is used to detect the inlet temperature at the second end of the mixed-flow temperature control assembly 400. The control module is electrically connected to the temperature detection module and the mixed-flow temperature control assembly 400. It is used to acquire operation control commands, control the conduction state of the first and second switch branches according to the operation mode corresponding to the operation control commands, and adjust the mixed-flow temperature control assembly 400 according to the inlet temperature and the air dew point temperature so that the difference between the inlet temperature and the air dew point temperature is within the difference range corresponding to the operation mode.

[0054] In some embodiments, such as Figure 2 As shown, the outdoor unit 100 includes a compressor 110, a gas-liquid separator 120, a four-way valve 130, and an outdoor heat exchanger 140. The discharge end of the compressor 101 is connected to the first port of the four-way valve 130, the second port of the four-way valve 130 is connected to the refrigerant inlet of the outdoor heat exchanger 140, and the refrigerant outlet of the outdoor heat exchanger 140 serves as the first end of the outdoor unit 100. The outlet of the gas-liquid separator 120 is connected to the suction port of the compressor 101, the inlet of the gas-liquid separator 120 is connected to the third port of the four-way valve 130, and the fourth port of the four-way valve 130 serves as the second end of the outdoor unit 100.

[0055] In some embodiments, the outdoor unit 100 further includes a second electromagnetic bypass valve SVP2, which is disposed at both ends of the refrigerant inlet and refrigerant outlet of the outdoor heat exchanger 140. By adjusting the opening degree of the second electromagnetic bypass valve SVP2, the temperature of the refrigerant flowing into the mixed-flow temperature control assembly 400 can be controlled. For example, the larger the opening degree of the second electromagnetic bypass valve SVP2, the more high-temperature refrigerant is bypassed, increasing the temperature of the liquid refrigerant entering the mixed-flow temperature control assembly 400. Ultimately, the higher the temperature of the refrigerant entering the indoor heat exchanger, the more heat is heated to warm the air, effectively improving the situation of excessively low indoor temperature.

[0056] The structure of the temperature detection module can be set according to actual needs. In some embodiments, the temperature detection module includes a first temperature sensor 510 electrically connected to the control module. The first temperature sensor 510 is disposed at the second end of the mixed flow temperature control component 400 to detect the inlet temperature of the second end of the mixed flow temperature control component 400 and output the inlet temperature to the control module.

[0057] Upon receiving the operation control command, the control module controls the conduction status of the first and second switch branches according to the corresponding operation mode. The conduction status of the first and second switch branches can be controlled independently; one branch can be turned on while the other is turned off, or both branches can be turned on simultaneously. The specific on / off condition can be set according to the current operation mode.

[0058] After receiving the operation control command, the control module will also adjust the mixed flow temperature control component 400 according to the inlet pipe temperature and the air dew point temperature to adjust the inlet pipe temperature so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the current operation mode, thereby matching the difference between the inlet pipe temperature and the air dew point temperature to the corresponding operation mode.

[0059] The operation control commands can be user-inputted, such as commands issued by the user through the air conditioner panel, remote control, or control terminal. Operation control commands can also be mode-switching commands automatically generated by the control module based on real-time indoor temperature and humidity data. Operation control commands typically carry identification information to indicate the current operating mode, such as cooling without dehumidification mode or deep dehumidification mode.

[0060] The air dew point temperature can be determined based on the indoor dry-bulb temperature and indoor relative humidity. In some embodiments, the air conditioning system includes a temperature and humidity sensor electrically connected to the control module. The temperature and humidity sensor is located on the indoor return air side and is used to detect the indoor return air temperature and humidity and output the data to the control module. The temperature detection module also includes a second temperature sensor electrically connected to the control module. The second temperature sensor is located on the inlet manifold of the second indoor heat exchanger 300 and detects the inlet temperature of the second indoor heat exchanger 300 in real time and outputs the data to the control module. The control module receives the indoor temperature and humidity data output by the temperature and humidity sensor and the inlet temperature of the second indoor heat exchanger 300, and calculates the indoor air dew point temperature.

[0061] The aforementioned air conditioning system includes a control module, an outdoor unit 100, a first indoor heat exchanger 200, a second indoor heat exchanger 300, a mixed-flow temperature control assembly 400, a first switch branch, a second switch branch, and a temperature detection module. The first end of the mixed-flow temperature control assembly 400 is connected to the first end of the outdoor unit 100, and its second end is connected to the first end of the first indoor heat exchanger 200 via the first switch branch and to the first end of the second indoor heat exchanger 300 via the second switch branch. The second ends of both indoor heat exchangers are connected to the second end of the outdoor unit 100. The temperature detection module is used to detect the inlet pipe temperature at the second end of the mixed-flow temperature control assembly 400. The control module is electrically connected to the temperature detection module and the mixed-flow temperature control assembly 400, and is used to acquire operating control commands, control the conduction state of the first and second switch branches according to the operating mode corresponding to the operating control commands, and adjust the mixed-flow temperature control assembly 400 according to the inlet pipe temperature and the air dew point temperature so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode. Therefore, the performance of the air conditioning system can be improved. For example, when the operating mode corresponding to the operation control command is cooling without dehumidification, the control module can control the first and second switch branches to be turned on simultaneously, so that the first and second indoor heat exchangers are connected in parallel. When the inlet pipe temperature is higher than the air dew point temperature, no condensation will be generated on the surface of the heat exchangers. At this time, the simultaneous operation of the two indoor units can increase the heat exchange area and ensure sufficient cooling capacity. Moreover, by making the two indoor heat exchangers work in parallel, the system resistance is lower and the unit operating power is lower, which is conducive to improving the overall energy efficiency.

[0062] In some embodiments, the operating mode corresponding to the operation control command includes a cooling-without-dehumidification mode. The control module is used to control both the first and second switch branches to be turned on according to the cooling-without-dehumidification mode, and to adjust the mixed-flow temperature control component 400 according to the inlet pipe temperature and the air dew point temperature, so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the cooling-without-dehumidification mode.

[0063] In the cooling-without-dehumidifying mode, the control module controls both the first and second switch branches to be turned on, so that the first indoor heat exchanger 200 and the second indoor heat exchanger 300 are connected in parallel and participate in heat exchange simultaneously to improve the heat exchange capacity.

[0064] In this mode, the control module will also adjust the mixed flow temperature control component 400 according to the inlet pipe temperature and the air dew point temperature, so that the inlet pipe temperature is greater than the air dew point temperature. The fin surfaces of the first indoor heat exchanger 200 and the second indoor heat exchanger 300 will not condense, and the cooling effect is achieved only through sensible heat exchange, without dehumidification.

[0065] The temperature difference range corresponding to the cooling-without-dehumidification mode can be set according to actual operating conditions, equipment parameters, and other factors, for example, 1℃-2℃. When the difference between the inlet pipe temperature and the air dew point temperature is within the range corresponding to the cooling-without-dehumidification mode, it ensures that the inlet pipe temperature remains stable above the dew point temperature, and the wall temperature of the two indoor heat exchangers remains higher than the air dew point, thereby reducing condensation caused by fluctuations. At the same time, by increasing the heat exchange area through the two indoor heat exchangers, it can compensate for the reduction in heat dissipation of each indoor heat exchanger after raising the inlet pipe temperature (compared to the scenario where the inlet pipe temperature is lower than the air dew point temperature), thus ensuring cooling performance.

[0066] In some embodiments, the mixed-flow temperature control assembly 400 includes a first electromagnetic bypass valve SVP1 and a third throttle valve EV1 electrically connected to the control module. The first end of the first electromagnetic bypass valve SVP1 and the first end of the third throttle valve EV1 are connected to the first end of the outdoor unit 100; the common end of the connection between the second end of the first electromagnetic bypass valve SVP1 and the second end of the third throttle valve EV1 is connected to the first switch branch and the second switch branch.

[0067] The refrigerant, after exiting the compressor 110, passes through the four-way valve 130 and the outdoor heat exchanger 140 and is divided into two paths. The temperature and pressure of the refrigerant will decrease after passing through the third throttle valve EV1, while the first electromagnetic bypass valve SVP1 can bypass the refrigerant with a higher temperature. The temperature after the two parts of refrigerant are mixed is the inlet temperature of the main inlet pipe.

[0068] By adjusting the opening of the third throttle valve EV1, the temperature of the refrigerant mixed between the first solenoid bypass valve SVP1 and the second end of the third throttle valve EV1 can be adjusted, thus controlling the inlet temperature of the main inlet pipe of the indoor heat exchanger. Specifically, if the refrigerant temperature is too high, the opening of the third throttle valve EV1 can be reduced to enhance the throttling and cooling effect and lower the overall refrigerant temperature after mixing; if the refrigerant temperature is too low, the opening of the third throttle valve EV1 can be increased to weaken the throttling degree and appropriately raise the temperature of the mixed refrigerant.

[0069] In this embodiment, by setting a third throttling valve EV1 in combination with the first electromagnetic bypass valve SVP1 to form a mixed-flow temperature control structure, dynamic mixing and temperature control of high-temperature bypass refrigerant and throttling low-temperature refrigerant can be achieved, so that the inlet temperature of the main pipe entering the two indoor heat exchangers can be dynamically adjusted according to specific conditions, thereby improving the flexibility of air conditioning control.

[0070] In some embodiments, the first switch branch is provided with a first solenoid valve SV1 connected to the control module, and the second switch branch is provided with a second solenoid valve SV2 electrically connected to the control module. The control module controls the on / off state of the first switch branch by controlling the on / off state of the first solenoid valve SV1, and the control module controls the on / off state of the second switch branch by controlling the on / off state of the second solenoid valve.

[0071] By electrically connecting the first solenoid valve SV1 and the second solenoid valve SV2 to the control module, the module can independently control the on / off state of the two heat exchanger branches through the two solenoid valves. For example, in the cooling without dehumidification mode, the control module controls the first solenoid valve SV1 and the second solenoid valve SV2 to open simultaneously, so that the refrigerant output from the mixed flow temperature control component 400 is output to the two indoor heat exchangers respectively. The two indoor heat exchangers exchange heat in parallel, increasing the total heat exchange area.

[0072] In this embodiment, each switch branch is equipped with a solenoid valve, enabling independent on / off switching of the dual heat exchanger branches, resulting in a simple structure. Simultaneously, the solenoid valves offer rapid on / off response and high control precision, accurately matching the conduction requirements of each switch branch under different operating modes, thus improving the control reliability of the air conditioning system.

[0073] In some embodiments, the operating mode corresponding to the operation control command includes a deep dehumidification mode. The first switch branch is also provided with a first throttling valve connected to the control module. The temperature detection module is further used to detect the first throttling temperature after throttling by the first throttling valve and output it to the control module. Exemplarily, the first throttling temperature is the refrigerant temperature or pipeline temperature after throttling by the first throttling valve.

[0074] When the operating mode corresponding to the operation control command received by the control module is deep dehumidification mode, the control module controls the opening of both the first throttle valve, the first solenoid valve, and the second solenoid valve according to the deep dehumidification mode. It also adjusts the mixing flow temperature control component based on the inlet pipe temperature and the air dew point temperature to ensure that the inlet pipe temperature is lower than the air dew point temperature, and that the difference between the inlet pipe temperature and the air dew point temperature falls within the first difference range corresponding to the deep dehumidification mode. The control module also controls the throttling opening of the first throttle valve to ensure that the first throttling temperature is lower than the air dew point temperature, and that the difference between the first throttling temperature and the air dew point temperature falls within the second difference range corresponding to the deep dehumidification mode.

[0075] In this range, the minimum value of the second temperature difference range is greater than the maximum value of the first temperature difference range. For example, if the first temperature difference range is 2℃~3℃ and the second temperature difference range is 4℃~5℃, it can be understood that when the inlet pipe temperature is lower than the air dew point temperature, and the first temperature difference range is 2℃~3℃, the inlet pipe temperature is 2℃~3℃ lower than the air dew point temperature. Similarly, when the first throttling temperature is lower than the air dew point temperature, and the second temperature difference range is 4℃~5℃, the first throttling temperature is 4℃~5℃ lower than the air dew point temperature.

[0076] The refrigerant output from the mixed-flow temperature control component 400 is divided into two streams. One stream flows through the second switch branch and the second indoor heat exchanger 300, completing the first dehumidification process. The other stream flows into the first switch branch, where it undergoes secondary throttling and pressure reduction via the first throttling valve. After the refrigerant temperature is further reduced, it is sent to the first indoor heat exchanger 200, where it undergoes deep dehumidification, thus achieving dual dehumidification.

[0077] After heat exchange, the two refrigerants flow out from the first indoor heat exchanger 200 and the second indoor heat exchanger 300 respectively and merge. The mixed low-temperature and low-pressure gaseous refrigerant is transported to the outdoor unit 100 and flows back to the compressor through the four-way valve and gas-liquid separator in sequence, completing the entire refrigeration and dehumidification cycle.

[0078] In this embodiment, the two indoor heat exchangers can dehumidify according to the corresponding temperature difference range. When the second temperature difference range is greater than the first temperature difference range, the dehumidification capacity of the second indoor heat exchanger 300 is relatively enhanced, which can further improve the dehumidification effect.

[0079] In one embodiment, the operating mode corresponding to the operation control command includes a dehumidification without cooling mode.

[0080] The air conditioning system also includes a first switching assembly 610 and a first throttling branch 620. The second end of the first indoor heat exchanger 200 is connected to the first end of the first indoor heat exchanger 200 via the first throttling branch 620, and the second end of the second indoor heat exchanger 300 is connected to the second end of the outdoor unit 100 via the first switching assembly 610.

[0081] The control module is used to control the second solenoid valve SV2 to close, the first switch assembly 610 to close, the first solenoid valve SV1 to open, and the first throttling branch 620 to be flow-limited and conducted according to the dehumidification without cooling mode. It also adjusts the mixed flow temperature control assembly 400 according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the third difference range corresponding to the dehumidification without cooling mode.

[0082] In this embodiment, when the operating mode corresponding to the received operation control command is the dehumidification without cooling mode, the control module controls the second solenoid valve SV2 to close, the first switch assembly 610 to close, the first solenoid valve SV1 to open, and the first throttling branch 620 to limit flow and conduct, thereby forming a series structure between the first indoor heat exchanger 200 and the second indoor heat exchanger 300.

[0083] The refrigerant heats the return air through heat exchange in the first indoor heat exchanger 200, then cools it down by flow restriction in the first throttling branch 620, before flowing into the second indoor heat exchanger 300. In terms of airflow, the return air first passes through the second indoor heat exchanger 300, where it exchanges heat with the low-temperature refrigerant to achieve cooling and dehumidification; the dehumidified return air then passes through the first indoor heat exchanger 200 where it is heated. Thus, the two indoor heat exchangers respectively achieve heating and cooling / dehumidification (the second indoor heat exchanger 300 achieves cooling and dehumidification, while the first indoor heat exchanger 200 heats the return air), and their heat exchange effects are balanced, achieving a "dehumidification without cooling" effect.

[0084] The third difference range can be determined based on factors such as the air conditioning operating conditions and the normal indoor temperature and humidity range. By ensuring that the inlet pipe temperature is higher than the air dew point temperature and the difference between the two is stably within the third difference range, it can be ensured that the first indoor heat exchanger 200 is always in a non-condensing sensible heat exchange state, and the return air preheating effect can be stably achieved.

[0085] It should be noted that traditional air conditioning systems typically use a single evaporator structure. When dehumidification is required, the evaporator wall temperature must be lowered below the air dew point, and condensate continuously condenses from the coils to complete dehumidification. However, this generates a large amount of excess cooling, leading to excessive cooling of the room and causing the uncomfortable feeling of "the colder it gets, the more you turn it on." Related technologies use a three-pipe air conditioning system, directly bypassing the compressor exhaust side with a pipe to the indoor condensing heat recovery heat exchanger, but the installation of a three-pipe system is complex. Another related technology uses a reheat dehumidification air conditioning unit that uses a two-way valve and a pressure regulating device in parallel, and includes a liquid receiver tank. However, determining the capacity of the liquid receiver tank is complex and it takes up considerable space; the heat exchanger's heating capacity is poor, and it cannot achieve the function of simultaneously dehumidifying and heating.

[0086] In this embodiment, the two indoor heat exchangers respectively achieve preheating and cooling / dehumidification, achieving a "dehumidification without cooling" effect through heat and cold balance. Moreover, the air conditioning system can switch between multiple independent operating conditions such as "cooling only without dehumidification," "dehumidification only without cooling," and "deep dehumidification" according to usage needs, making it highly convenient to use.

[0087] In some embodiments, the temperature detection module is also used to detect the temperature of the second throttling branch after throttling in the first throttling branch.

[0088] In the dehumidification without cooling mode, the control module is also used to adjust the throttling state of the first throttling branch according to the second throttling temperature and the air dew point temperature, so that the second throttling temperature is lower than the air dew point temperature, and the difference between the second throttling temperature and the air dew point temperature is within the fourth difference range corresponding to the dehumidification without cooling mode.

[0089] In this embodiment, on the one hand, the third difference range ensures that the preheating condition of the first indoor heat exchanger 200 is stable, which can offset the cold energy generated by the downstream dehumidification and maintain the indoor temperature. On the other hand, the fourth difference range controls the cooling range of the first throttling branch, so that the second indoor heat exchanger 300 has a stable and sufficient condensation dehumidification temperature difference to ensure the dehumidification effect.

[0090] Furthermore, in some embodiments, the dehumidification without temperature reduction mode can be further subdivided into a dehumidification temperature without temperature reduction mode and a dehumidification temperature increase mode. In the dehumidification temperature increase mode, the control module controls the second electromagnetic bypass valve SVPP2 to be fully open, allowing more high-temperature refrigerant to bypass, resulting in a higher temperature of the mixed refrigerant. Consequently, the temperature of the refrigerant entering the first indoor heat exchanger 200 is higher, and more heat is generated to heat the air, achieving a dehumidification and temperature increase effect. In the dehumidification temperature without temperature reduction mode, the temperature detection module detects the outlet air temperature and the return air temperature (indoor temperature). The control module controls the opening of the second electromagnetic bypass valve SVPP2 based on the difference between the outlet air temperature and the return air temperature. When the detected outlet air temperature is lower than the return air temperature, the opening of the second electromagnetic bypass valve SVPP2 is increased to raise the temperature of the mixed air, thereby increasing the heating capacity. When the detected outlet air temperature is higher than the return air temperature, the opening of the second electromagnetic bypass valve SVPP2 is decreased to lower the temperature of the mixed air, thereby reducing the heating capacity. This ensures that the indoor temperature remains unchanged or increases during dehumidification.

[0091] In one embodiment, the first throttling branch 620 includes a second throttling valve EV2 and a third solenoid valve SV3 electrically connected to the control module, and the second end of the first indoor heat exchanger 200 is connected to the first end of the first indoor heat exchanger 200 via the second throttling valve EV2 and the third solenoid valve SV3.

[0092] In cooling without dehumidification mode, the control module controls the opening of the first solenoid valve SV1, the second solenoid valve SV2, and the first switching assembly 610, while the second throttle valve EV2 and the third solenoid valve SV3 are both closed. The first indoor heat exchanger 200 and the second indoor heat exchanger 300 are connected in parallel, and the refrigerant flow direction is as follows. Figure 3 As shown by the middle arrow. In dehumidification without cooling mode, the control module controls the second solenoid valve SV2 and the first switch assembly 610 to turn off, while the first solenoid valve SV1, the second throttle valve EV2, and the third solenoid valve SV3 are all open. The first indoor heat exchanger 200 and the second indoor heat exchanger 300 are connected in series, and the refrigerant flow direction is as follows. Figure 4 As indicated by the middle arrow.

[0093] In this embodiment, by controlling multiple valves to switch the refrigerant flow direction, flexible switching between parallel (conventional / dry cooling) and series (reheat / deep dehumidification) modes is achieved, overcoming the functional limitations of a single evaporator. In parallel operation, the heat exchangers in both chambers operate synchronously, increasing the total heat exchange area. Even with the refrigerant inlet pipe temperature raised above the dew point, sufficient sensible heat cooling capacity is still maintained, improving cooling performance in simple cooling conditions. In series operation, the heat exchangers in both chambers absorb heat at the front stage to preheat the air and then cool and dehumidify at the rear stage, with the heat and cold canceling each other out, achieving dehumidification without a significant drop in indoor temperature, improving user experience. The entire system flow path achieves mode switching through a small number of solenoid valves and throttling valves, resulting in a simple piping structure and lower overall production costs and assembly difficulty.

[0094] In one embodiment, the air conditioning system further includes a fourth solenoid valve SV4, the first end of which is connected between the second throttle valve EV2 and the first solenoid valve SV1, and the second end of which is connected to the first end of the first indoor heat exchanger 200.

[0095] In deep dehumidification mode, the control module controls the first solenoid valve SV1 to close, the second solenoid valve SV2 to open, and the second throttle valve EV2 to open. The first indoor heat exchanger 200 and the second indoor heat exchanger 300 are connected in parallel, and the refrigerant flow direction is as follows: Figure 5 As indicated by the middle arrow.

[0096] The temperature detection module is also used to detect the second throttling temperature after throttling by the second throttling valve EV2 and output it to the control module. The control module is used to adjust the mixed-flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the inlet pipe temperature is lower than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the first difference range corresponding to the deep dehumidification mode. The control module is also used to control the throttling opening of the second throttling valve, so that the second throttling temperature is lower than the air dew point temperature, and the difference between the second throttling temperature and the air dew point temperature is within the second difference range corresponding to the deep dehumidification mode.

[0097] The refrigerant output from the mixed-flow temperature control component 400 is divided into two streams. One stream of refrigerant flows through the second indoor heat exchanger 300 to complete the first dehumidification process. The other stream of refrigerant is throttled, cooled, and depressurized by the second throttling valve EV2 before being sent to the first indoor heat exchanger 200 for deep dehumidification, thus achieving dual dehumidification.

[0098] After heat exchange, the two refrigerants flow out from the first indoor heat exchanger 200 and the second indoor heat exchanger 300 respectively and merge. The mixed low-temperature and low-pressure gaseous refrigerant is transported to the outdoor unit 100 and flows back to the compressor through the four-way valve and gas-liquid separator in sequence, completing the entire refrigeration and dehumidification cycle.

[0099] In this embodiment, by controlling multiple valves to switch the refrigerant flow direction, the parallel and series structures can be flexibly switched, and multiple independent operating conditions such as "cooling only without dehumidification", "dehumidification only without cooling" and "deep dehumidification" can be achieved, making the air conditioning system highly convenient to use.

[0100] Since the return air first passes through the second indoor heat exchanger 300 and then the first indoor heat exchanger 200, it is dehumidified for the first time when it passes through the second indoor heat exchanger 300. If it were to be dehumidified again when passing through the first indoor heat exchanger 200, a lower refrigerant temperature would be required. Therefore, by making the second temperature difference range higher than the first temperature difference range, the pipe temperature of the first indoor heat exchanger 200 can be lower than that of the second indoor heat exchanger 300, further enhancing the dehumidification capacity when the return air passes through the first indoor heat exchanger 200. Because the refrigerant temperature is related to the throttling valve, the smaller the valve, the stronger the throttling effect and the lower the refrigerant temperature, but the refrigerant flow rate is also smaller, which will affect the heat exchange load and heat exchange efficiency. Therefore, the first and second temperature difference ranges can be set according to actual conditions.

[0101] In some embodiments, the temperature detection module further includes a second temperature sensor 520 electrically connected to the control module. The second temperature sensor 520 is disposed between the second throttling valve EV2 and the fourth solenoid valve SV4 to detect the second throttling temperature after throttling by the second throttling valve EV2 and output the temperature to the control module. For example, the second throttling temperature is the refrigerant temperature after throttling.

[0102] In one exemplary embodiment, a control method for an air conditioning system is provided. The structure of the air conditioning system can be configured as described in the above embodiments, and the control module is used to implement control in different modes according to the control method.

[0103] In some embodiments, such as Figure 6 As shown, the control method of the air conditioning system includes the following steps 602 and 604.

[0104] Step 602: Obtain the operation control command.

[0105] Step 604: Control the conduction state of the first switch branch and the second switch branch according to the operating mode corresponding to the operating control command, and adjust the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode.

[0106] The aforementioned control method for the air conditioning system can improve its performance. For example, when the operating mode corresponding to the control command is cooling without dehumidification, the control module can simultaneously activate the first and second switch branches, connecting the first and second indoor heat exchangers in parallel. When the inlet pipe temperature is higher than the air dew point temperature, no condensation will form on the heat exchanger surface. At this time, the simultaneous operation of both indoor units increases the heat exchange area, ensuring sufficient cooling capacity. Furthermore, it eliminates the need for high fan speeds to enhance heat exchange, resulting in lower operating noise and more uniform and comfortable indoor temperature regulation.

[0107] In some embodiments, when the operating mode corresponding to the operating control command is the cooling-without-dehumidification mode, the steps include controlling the conduction state of the first and second switch branches, and adjusting the mixed-flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode, including the following steps:

[0108] The first and second switch branches are both turned on, and the mixed flow temperature control component is adjusted according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the cooling without dehumidification mode.

[0109] In some embodiments, the first switch branch is provided with a first solenoid valve of the electrical connection control module, and the second switch branch is provided with a second solenoid valve of the electrical connection control module. The control module controls the on / off state of the first switch branch by controlling the on / off state of the first solenoid valve, and controls the on / off state of the second switch branch by controlling the on / off state of the second solenoid valve. The first switch branch is also provided with a first throttling valve of the electrical connection control module; the temperature detection module is also used to detect the first throttling temperature after throttling by the first throttling valve.

[0110] When the operating mode corresponding to the operation control command is the deep dehumidification mode, the steps include controlling the conduction state of the first and second switch branches, and adjusting the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature to ensure that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode, including the following steps:

[0111] The first solenoid valve and the first throttle valve are both opened, and the mixing flow temperature control component is adjusted according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is lower than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the first difference range corresponding to the deep dehumidification mode.

[0112] The throttling opening of the first throttling valve is controlled so that the first throttling temperature is lower than the air dew point temperature, and the difference between the first throttling temperature and the air dew point temperature is within the second difference range corresponding to the deep dehumidification mode; wherein, the minimum value of the second difference range is greater than the maximum value of the first difference range.

[0113] In some embodiments, the air conditioning system further includes a first switching assembly and a first throttling branch; the second end of the first indoor heat exchanger is connected to the first end of the first indoor heat exchanger via the first throttling branch, and the second end of the second indoor heat exchanger is connected to the second end of the outdoor unit via the first switching assembly.

[0114] When the operating mode corresponding to the operation control command is dehumidification without cooling mode, the steps include controlling the conduction state of the first and second switch branches, and adjusting the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature to ensure that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode, including the following steps:

[0115] The system controls the second solenoid valve to close, the first switch assembly to close, the first solenoid valve to open, and the first throttling branch to be flow-limited and conducted. It also adjusts the mixed-flow temperature control assembly according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the third difference range corresponding to the dehumidification without cooling mode.

[0116] In some embodiments, when the operating mode corresponding to the operating control command is dehumidification without cooling mode, the control method further includes: adjusting the throttling state of the first throttling branch according to the second throttling temperature and the air dew point temperature, so that the second throttling temperature is lower than the air dew point temperature, and the difference between the second throttling temperature and the air dew point temperature is within the four difference range corresponding to the dehumidification without cooling mode. The second throttling temperature is the temperature after throttling in the first throttling branch.

[0117] In some embodiments, the first throttling branch includes a second throttling valve and a third solenoid valve electrically connected to the control module, and the second end of the first indoor heat exchanger is connected to the first end of the first indoor heat exchanger via the second throttling valve and the third solenoid valve. The air conditioning system also includes a fourth solenoid valve, the first end of which is connected between the second throttling valve and the third solenoid valve, and the second end of which is connected to the first end of the first indoor heat exchanger.

[0118] When the operating mode corresponding to the operation control command is the deep dehumidification mode, the steps include controlling the conduction state of the first and second switch branches, and adjusting the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature to ensure that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode, including the following steps:

[0119] The system controls the first solenoid valve to close, the second solenoid valve to open, the second throttle valve to open, and the second throttle valve to open. It also adjusts the mixing flow temperature control component based on the inlet pipe temperature and the air dew point temperature to ensure that the inlet pipe temperature is lower than the air dew point temperature, and that the difference between the inlet pipe temperature and the air dew point temperature falls within the first difference range corresponding to the deep dehumidification mode. Finally, it controls the throttling opening of the second throttle valve to ensure that the second throttling temperature is lower than the air dew point temperature, and that the difference between the second throttling temperature and the air dew point temperature falls within the second difference range corresponding to the deep dehumidification mode.

[0120] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0121] Based on the same inventive concept, this application also provides a control device for an air conditioning system that implements the control method for the air conditioning system described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the control device for the air conditioning system provided below can be found in the limitations of the control method for the air conditioning system described above, and will not be repeated here.

[0122] In one exemplary embodiment, such as Figure 7 As shown, a control device for an air conditioning system is provided, applied to the air conditioning system of the above embodiment. The control device includes: an instruction acquisition module 702 and a mode control module 704, wherein:

[0123] The instruction acquisition module 702 is used to acquire operation control instructions.

[0124] The mode control module 704 is used to control the conduction state of the first switch branch and the second switch branch according to the operating mode corresponding to the operating control command, and to adjust the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode.

[0125] In some embodiments, the mode control module 704 is further configured to control both the first switch branch and the second switch branch to be turned on, and to adjust the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the cooling without dehumidification mode.

[0126] In some embodiments, the mode control module 704 is further configured to control both the first solenoid valve and the first throttle valve to open, and to adjust the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the inlet pipe temperature is lower than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the first difference range corresponding to the deep dehumidification mode.

[0127] The throttling opening of the first throttling valve is controlled so that the first throttling temperature is lower than the air dew point temperature, and the difference between the first throttling temperature and the air dew point temperature is within the second difference range corresponding to the deep dehumidification mode; wherein, the minimum value of the second difference range is greater than the maximum value of the first difference range.

[0128] In some embodiments, the mode control module 704 is further configured to control the second solenoid valve to close, the first switch assembly to close, the first solenoid valve to open, and the first throttling branch to be flow-limited and conducted, and to adjust the mixed flow temperature control assembly according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the third difference range corresponding to the dehumidification without cooling mode.

[0129] In some embodiments, the mode control module 704 is further configured to control the first solenoid valve to close, the second solenoid valve to open, the second throttle valve to open, and the second throttle valve to open; adjust the mixed-flow temperature control component according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is lower than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the first difference range corresponding to the deep dehumidification mode; and control the throttling opening of the second throttle valve so that the second throttling temperature is lower than the air dew point temperature, and the difference between the second throttling temperature and the air dew point temperature is within the second difference range corresponding to the deep dehumidification mode.

[0130] Each module in the control device of the aforementioned air conditioning system can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0131] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0132] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0133] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0134] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. An air conditioning system, characterized in that, include: The system comprises a control module, an outdoor unit, a first indoor heat exchanger, a second indoor heat exchanger, a mixed-flow temperature control component, a first switch branch, a second switch branch, and a temperature detection module; the first end of the mixed-flow temperature control component is connected to the first end of the outdoor unit, the second end of the mixed-flow temperature control component is connected to the first end of the first indoor heat exchanger via the first switch branch and to the first end of the second indoor heat exchanger via the second switch branch, and the second ends of the first indoor heat exchanger and the second indoor heat exchanger are both connected to the second end of the outdoor unit; The temperature detection module is used to detect the inlet temperature of the second end of the mixed-flow temperature control component; The control module is electrically connected to the temperature detection module and the mixed-flow temperature control component. It is used to acquire operation control commands, control the conduction state of the first switch branch and the second switch branch according to the operation mode corresponding to the operation control commands, and adjust the mixed-flow temperature control component according to the inlet pipe temperature and the air dew point temperature so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operation mode.

2. The air conditioning system according to claim 1, characterized in that, When the operating mode corresponding to the operation control command is the cooling without dehumidification mode, the control module controls both the first switch branch and the second switch branch to be turned on, and adjusts the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the cooling without dehumidification mode.

3. The air conditioning system according to claim 1, characterized in that, The first switch branch is provided with a first solenoid valve electrically connected to the control module, and the second switch branch is provided with a second solenoid valve electrically connected to the control module; the control module controls the on or off state of the first switch branch by controlling the on / off state of the first solenoid valve, and controls the on or off state of the second switch branch by controlling the on / off state of the second solenoid valve.

4. The air conditioning system according to claim 3, characterized in that, The first switch branch is also provided with a first throttle valve electrically connected to the control module; the temperature detection module is also used to detect the first throttle temperature after throttling by the first throttle valve. When the operating mode corresponding to the operation control command is the deep dehumidification mode, the control module controls the first solenoid valve, the second solenoid valve and the first throttle valve to open, and adjusts the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature, so that the inlet pipe temperature is lower than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the first difference range corresponding to the deep dehumidification mode. The control module is further configured to control the throttling opening of the first throttling valve so that the first throttling temperature is less than the air dew point temperature, and the difference between the first throttling temperature and the air dew point temperature is within the second difference range corresponding to the deep dehumidification mode; wherein, the minimum value of the second difference range is greater than the maximum value of the first difference range.

5. The air conditioning system according to claim 3, characterized in that, The air conditioning system further includes a first switching assembly and a first throttling branch; the second end of the first indoor heat exchanger is connected to the first end of the first indoor heat exchanger via the first throttling branch, and the second end of the second indoor heat exchanger is connected to the second end of the outdoor unit via the first switching assembly; When the operating mode corresponding to the operation control command is the dehumidification without cooling mode, the control module controls the second solenoid valve to close, the first switch assembly to close, the first solenoid valve to open, and the first throttling branch to be flow-limited and conducted according to the dehumidification without cooling mode. It also adjusts the mixed flow temperature control assembly according to the inlet pipe temperature and the air dew point temperature so that the inlet pipe temperature is greater than the air dew point temperature, and the difference between the inlet pipe temperature and the air dew point temperature is within the third difference range corresponding to the dehumidification without cooling mode.

6. The air conditioning system according to claim 5, characterized in that, The temperature detection module is also used to detect the temperature of the second throttling after throttling in the first throttling branch. In the dehumidification without cooling mode, the control module is further configured to adjust the throttling state of the first throttling branch according to the second throttling temperature and the air dew point temperature, so that the second throttling temperature is less than the air dew point temperature, and the difference between the second throttling temperature and the air dew point temperature is within the four difference range corresponding to the dehumidification without cooling mode.

7. The air conditioning system according to claim 6, characterized in that, The first throttling branch includes a second throttling valve and a third solenoid valve electrically connected to the control module. The second end of the first indoor heat exchanger is connected to the first end of the first indoor heat exchanger via the third solenoid valve and the second throttling valve.

8. The air conditioning system according to claim 7, characterized in that, The air conditioning system further includes a fourth solenoid valve, the first end of which is connected between the second throttle valve and the third solenoid valve, and the second end of which is connected to the first end of the first indoor heat exchanger.

9. The air conditioning system according to claim 1, characterized in that, The mixed-flow temperature control assembly includes a first electromagnetic bypass valve and a third throttle valve electrically connected to the control module; the first end of the first electromagnetic bypass valve and the first end of the third throttle valve are connected to the first end of the outdoor unit; the common end of the connection between the second end of the first electromagnetic bypass valve and the second end of the third throttle valve is connected to the first switch branch and the second switch branch.

10. A control method for an air conditioning system, characterized in that, The air conditioning system includes an outdoor unit, a first indoor heat exchanger, a second indoor heat exchanger, a mixed-flow temperature control component, a first switch branch, and a second switch branch; the first end of the mixed-flow temperature control component is connected to the first end of the outdoor unit, the second end of the mixed-flow temperature control component is connected to the first end of the first indoor heat exchanger via the first switch branch and to the first end of the second indoor heat exchanger via the second switch branch, and the second ends of both the first and second indoor heat exchangers are connected to the second end of the outdoor unit; the control method includes: Obtain operation control commands; The conduction state of the first switch branch and the second switch branch is controlled according to the operating mode corresponding to the operating control command, and the mixing temperature control component is adjusted according to the inlet pipe temperature and the air dew point temperature so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode; wherein, the inlet pipe temperature is the temperature of the second end of the mixing temperature control component.

11. A control device for an air conditioning system, characterized in that, The air conditioning system includes an outdoor unit, a first indoor heat exchanger, a second indoor heat exchanger, a mixed-flow temperature control component, a first switch branch, and a second switch branch; the first end of the mixed-flow temperature control component is connected to the first end of the outdoor unit, the second end of the mixed-flow temperature control component is connected to the first end of the first indoor heat exchanger via the first switch branch and to the first end of the second indoor heat exchanger via the second switch branch, and the second ends of the first indoor heat exchanger and the second indoor heat exchanger are both connected to the second end of the outdoor unit; the control device includes: The instruction acquisition module is used to acquire operation control instructions; The mode control module is used to control the conduction state of the first switch branch and the second switch branch according to the operating mode corresponding to the operating control command, and to adjust the mixed flow temperature control component according to the inlet pipe temperature and the air dew point temperature so that the difference between the inlet pipe temperature and the air dew point temperature is within the difference range corresponding to the operating mode; wherein, the inlet pipe temperature is the temperature of the second end of the mixed flow temperature control component.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method of claim 10.

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