Heat dissipation method and device of outdoor electric control equipment, air conditioner and medium

Abstract

The application discloses a heat dissipation method and device of an outdoor electric control equipment, an air conditioner and a medium. The method is applied to an air conditioner comprising a heat exchange circulation loop, a radiator and an outdoor machine electric control equipment. The radiator in series between an outdoor heat exchanger and an indoor heat exchanger in the heat exchange circulation loop is used for dissipating heat of the outdoor machine electric control equipment. A branch provided with a second throttling component is parallelly connected to a refrigerant pipeline between the outdoor heat exchanger, the indoor heat exchanger and the radiator. When an outdoor environment temperature meets a preset condition and an electric control current of the outdoor electric control equipment is greater than a preset current, the second throttling component on a high pressure side is controlled to be opened. The refrigerant at a condenser outlet is divided into branch refrigerant and dry channel refrigerant. The branch refrigerant passing through the second throttling component is used for cooling the dry channel refrigerant in the original circulation backflow. Two mixed refrigerants enter the radiator to dissipate heat of the outdoor machine electric control equipment.

Description

Technical Field

[0001] This invention relates to the technical field of air conditioning equipment, and more particularly to heat dissipation methods for outdoor electrical control equipment, heat dissipation devices for outdoor electrical control equipment, air conditioners, and computer-readable storage media. Background Technology

[0002] Outdoor electrical control equipment generates a significant amount of heat during high-frequency compressor operation and high ambient temperatures, requiring a radiator for heat dissipation. Currently, the mainstream heat dissipation methods are air cooling and refrigerant cooling. Air cooling primarily utilizes forced air convection to remove heat, while refrigerant cooling uses the refrigerant at the condenser outlet to remove heat from the radiator. However, these two methods currently only address heat dissipation under normal operating conditions. Under extreme conditions, where the outdoor electrical control equipment draws high current and consumes a lot of power, its heat dissipation capacity deteriorates, further limiting the compressor frequency and ultimately resulting in poorer cooling and heating performance. Summary of the Invention

[0003] The main objective of this invention is to provide a heat dissipation method for outdoor electrical control equipment, a heat dissipation device for outdoor electrical control equipment, an air conditioner, and a computer-readable storage medium, aiming to solve the technical problem in the prior art that it is difficult to simply and effectively dissipate heat from outdoor electrical control equipment under extreme operating conditions.

[0004] To achieve the above objectives, the present invention provides a heat dissipation method for outdoor electrical control equipment, applied to an air conditioner. The air conditioner includes a heat exchange circulation loop, a radiator, and outdoor unit electrical control equipment. The radiator is used to dissipate heat from the outdoor unit electrical control equipment and is connected in series between the outdoor heat exchanger and the indoor heat exchanger in the heat exchange circulation loop. A branch is connected in parallel on both the refrigerant pipeline between the outdoor heat exchanger and the radiator, and the refrigerant pipeline between the indoor heat exchanger and the radiator. A second throttling component is provided on each branch. The outdoor unit electrical control heat dissipation method includes the following steps:

[0005] Obtain the outdoor ambient temperature and the electrical control current of the outdoor electrical control equipment;

[0006] When the outdoor ambient temperature meets the preset conditions and the electronic control current is greater than the preset current, the second throttling component on the high-voltage side is controlled to open.

[0007] Optionally, the preset conditions include:

[0008] The outdoor ambient temperature is greater than or equal to the first preset threshold.

[0009] The outdoor ambient temperature is less than or equal to the second preset threshold, and the first preset threshold is greater than the second preset threshold.

[0010] Optionally, when the outdoor ambient temperature meets a preset condition and the electronic control current is greater than a preset current, the step of controlling the second throttling component on the high-voltage side to open includes:

[0011] When the outdoor ambient temperature is greater than or equal to the first preset threshold, the second throttling component on the branch of the refrigerant pipeline connected in parallel between the outdoor heat exchanger and the radiator is opened, wherein the refrigerant pipeline between the outdoor heat exchanger and the radiator is a high-pressure side refrigerant pipeline when the outdoor ambient temperature is greater than or equal to the first preset threshold.

[0012] And / or,

[0013] When the outdoor ambient temperature is less than or equal to the second preset threshold, the second throttling component on the parallel branch of the refrigerant pipeline between the indoor heat exchanger and the radiator is opened, wherein when the outdoor ambient temperature is greater than or equal to the first preset threshold, the refrigerant pipeline between the indoor heat exchanger and the radiator is a high-pressure side refrigerant pipeline.

[0014] Optionally, after the step of controlling the opening of the second throttling component on the high-voltage side, the method further includes:

[0015] Obtain the inlet refrigerant temperature of the radiator;

[0016] Adjust the opening degree of the second throttling component on the high-pressure side according to the temperature of the imported refrigerant.

[0017] Optionally, the step of adjusting the opening of the second throttling component on the high-pressure side according to the inlet refrigerant temperature includes:

[0018] If the temperature of the imported refrigerant is within the preset temperature range, the current opening of the second throttling component on the high-pressure side is maintained.

[0019] Optionally, the step of adjusting the opening of the second throttling component on the high-pressure side according to the inlet refrigerant temperature includes:

[0020] If the temperature of the inlet refrigerant is lower than the minimum value of the preset temperature range, the opening of the second throttling component on the high-pressure side is increased until the temperature of the inlet refrigerant is within the preset temperature range.

[0021] Optionally, the step of adjusting the opening of the second throttling component on the high-pressure side according to the inlet refrigerant temperature includes:

[0022] If the temperature of the inlet refrigerant is greater than the maximum value of the preset temperature range, the opening of the second throttling component on the high-pressure side is reduced until the temperature of the inlet refrigerant is within the preset temperature range.

[0023] Furthermore, to achieve the above objectives, this application also proposes a heat dissipation device for outdoor electrical control equipment, wherein the outdoor unit electrical control heat dissipation device includes:

[0024] The acquisition module is used to acquire the outdoor ambient temperature and the electrical control current of the outdoor electrical control equipment.

[0025] The control module is used to control the second throttling component on the high-voltage side to open when the outdoor ambient temperature meets the preset conditions and the electronic control current is greater than the preset current.

[0026] In addition, to achieve the above objectives, this application also proposes an air conditioner, which further includes a processor, a memory, and a computer program stored in the memory that can be executed by the processor, wherein when the computer program is executed by the processor, it implements the steps of the heat dissipation method for outdoor electrical control equipment as described in any of the preceding claims, so that the heat sink dissipates heat from the outdoor electrical control equipment.

[0027] In addition, to achieve the above objectives, this application also proposes a computer-readable storage medium storing a heat dissipation program for an outdoor electronic control device, wherein when the heat dissipation program for the outdoor electronic control device is executed by a processor, the heat dissipation method for the outdoor electronic control device as described in any of the preceding claims is implemented.

[0028] This invention proposes a heat dissipation method for outdoor electrical control equipment, which is applied to an air conditioner. The air conditioner includes a heat exchange circulation loop, a radiator, and an outdoor unit electrical control device. The radiator is used to dissipate heat from the outdoor unit electrical control device and is connected in series between the outdoor heat exchanger and the indoor heat exchanger in the heat exchange circulation loop. A branch is connected in parallel on both the refrigerant pipeline between the outdoor heat exchanger and the radiator and the refrigerant pipeline between the indoor heat exchanger and the radiator. A second throttling component is provided on the branch.

[0029] When the outdoor ambient temperature meets the preset conditions and the electrical control current of the outdoor electrical control equipment is greater than the preset current, the second throttling component on the high-pressure side is opened. Compared with air cooling and refrigerant cooling, this application, based on the outdoor ambient temperature and the electrical control current of the outdoor electrical control equipment, determines that an extreme operating condition is being encountered. It then controls the second throttling component on the parallel branch of the refrigerant pipeline on the high-pressure side to open, causing the refrigerant at the condenser outlet to split into branch refrigerant and main refrigerant. The branch refrigerant passing through the second throttling component cools the main refrigerant in the original circulating return flow, allowing the two streams of mixed refrigerant to enter the radiator and thus dissipate heat from the outdoor unit's electrical control equipment. This improves the heat dissipation efficiency of the outdoor electrical control equipment and provides a simple and effective way to cool the outdoor electrical control equipment under extreme operating conditions. Attached Figure Description

[0030] Figure 1This is a schematic diagram of the structure of the operating device of the hardware operating environment involved in the embodiments of the present invention;

[0031] Figure 2 This is a schematic flowchart of an embodiment of a heat dissipation method for outdoor electrical control equipment according to the present invention;

[0032] Figure 3 This is a system schematic diagram of an embodiment of a heat dissipation method for outdoor electrical control equipment according to the present invention;

[0033] Figure 4 This is a schematic diagram of the control logic in the cooling mode of an embodiment of a heat dissipation method for outdoor electrical control equipment according to the present invention;

[0034] Figure 5 This is a schematic diagram of the control logic in the heating mode of an embodiment of a heat dissipation method for outdoor electrical control equipment according to the present invention;

[0035] Figure 6 This is a schematic diagram of the cooling mode auxiliary electronic expansion valve control logic of an embodiment of a heat dissipation method for outdoor electrical control equipment according to the present invention;

[0036] Figure 7 This is a schematic diagram of the control logic of the auxiliary electronic expansion valve for the heating mode in an embodiment of a heat dissipation method for outdoor electrical control equipment according to the present invention.

[0037] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0039] Outdoor electrical control equipment generates a significant amount of heat during high-frequency compressor operation and high ambient temperatures, requiring a radiator for heat dissipation. Currently, the mainstream heat dissipation methods are air cooling and refrigerant cooling. Air cooling primarily utilizes forced air convection to remove heat, while refrigerant cooling uses the refrigerant at the condenser outlet to remove heat from the radiator. However, these two methods currently only address heat dissipation under normal operating conditions. Under extreme conditions, where the outdoor electrical control equipment draws high current and consumes a lot of power, its heat dissipation capacity deteriorates, further limiting the compressor frequency and ultimately resulting in poorer cooling and heating performance.

[0040] Specifically: 1. With air-cooled cooling, the air temperature inside the enclosed casing of the outdoor unit remains high when the outdoor ambient temperature is high, reducing the cooling effect on the outdoor electrical control equipment and consequently decreasing the cooling performance of the air conditioner in high-temperature environments. 2. With refrigerant cooling, the refrigerant at the condenser outlet directly cools the heating modules of the outdoor electrical control equipment. Even after being cooled by the condenser, the high-temperature refrigerant temperature remains higher than the ambient temperature. In cooling mode, due to high outdoor ambient temperature and excessive dust on the condenser leading to poor heat exchange, the refrigerant outlet temperature remains high, further reducing the cooling effect on the outdoor electrical control equipment. In heating mode, although the outdoor ambient temperature is low, the temperature inside the refrigerant pipes remains high. Under high-frequency heating, the cooling effect is poor, leading to increased maintenance rates of the outdoor electrical control equipment in heating mode, further limiting the heating frequency and reducing the overall heating performance.

[0041] The main solution of this invention is as follows: It is applied to an air conditioner including a heat exchange circulation loop, a radiator, and an outdoor unit electrical control device. The radiator is used to dissipate heat from the outdoor unit electrical control device and is connected in series between the outdoor heat exchanger and the indoor heat exchanger in the heat exchange circulation loop. A branch is connected in parallel on both the refrigerant pipeline between the outdoor heat exchanger and the radiator, and on the refrigerant pipeline between the indoor heat exchanger and the radiator. A second throttling device is installed on this branch. When the outdoor ambient temperature meets a preset condition and the electrical control current of the outdoor unit electrical control device is greater than a preset current, the second throttling device on the high-pressure side is opened.

[0042] This invention provides the above-mentioned solution. Compared with air cooling and refrigerant-based heat dissipation, this application, when determining that the outdoor operating condition is extreme based on the outdoor ambient temperature and the electrical control current of the outdoor electrical control equipment, controls the opening of the second throttling component on the parallel branch of the high-pressure side refrigerant pipeline. This causes the refrigerant at the condenser outlet to be divided into branch refrigerant and main refrigerant. The branch refrigerant passing through the second throttling component is used to cool the main refrigerant in the original circulating return flow. The two mixed refrigerants then enter the radiator to dissipate heat from the outdoor unit's electrical control equipment, thereby improving the heat dissipation efficiency of the outdoor electrical control equipment and providing a simple and effective way to dissipate heat from the outdoor electrical control equipment under extreme operating conditions.

[0043] Reference Figure 1 , Figure 1 This is a schematic diagram of the operating device of the hardware operating environment involved in the embodiments of the present invention.

[0044] like Figure 1As shown, the operating device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to enable communication between these components. The user interface 1003 may include a display screen or an input unit such as a keyboard; optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface). The memory 1005 may be a high-speed random access memory (RAM) or a stable non-volatile memory (NVM), such as a disk drive. The memory 1005 may also optionally be a storage device independent of the aforementioned processor 1001.

[0045] Those skilled in the art will understand that Figure 1 The structure shown does not constitute a limitation on the operating equipment and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0046] like Figure 1 As shown, the memory 1005, which serves as a storage medium, may include an operating system, a data storage module, a network communication module, a user interface module, and computer programs.

[0047] exist Figure 1 In the illustrated operating device, the network interface 1004 is mainly used for data communication with other devices; the user interface 1003 is mainly used for data interaction with the user; the processor 1001 and memory 1005 in the operating device of the present invention can be installed in the operating device, and the operating device calls the computer program stored in the memory 1005 through the processor 1001 and performs the following operations:

[0048] Obtain the outdoor ambient temperature and the electrical control current of the outdoor electrical control equipment;

[0049] When the outdoor ambient temperature meets the preset conditions and the electronic control current is greater than the preset current, the second throttling component on the high-voltage side is controlled to open.

[0050] This invention provides a heat dissipation method for outdoor electrical control equipment. In this embodiment, the heat dissipation method for outdoor electrical control equipment is applied to an air conditioner. The air conditioner includes a heat exchange circulation loop, a radiator, and an outdoor unit electrical control device. The radiator is used to dissipate heat from the outdoor unit electrical control device. The radiator is connected in series between the outdoor heat exchanger and the indoor heat exchanger in the heat exchange circulation loop. A branch is connected in parallel on both the refrigerant pipeline between the outdoor heat exchanger and the radiator and the refrigerant pipeline between the indoor heat exchanger and the radiator. A second throttling component is provided on the branch.

[0051] Reference Figure 3 In this diagram, 1 is the compressor, 2 is the outdoor heat exchanger, 3 is the heating electronic expansion valve, 4 is the cooling auxiliary electronic expansion valve, 5 is the temperature sensor, 6 is the outdoor unit electrical control equipment (outdoor electrical control main board), 7 is the temperature sensor, 8 is the heating auxiliary electronic expansion valve, 9 is the cooling electronic expansion valve, 10 is the indoor heat exchanger, and 11 is the four-way valve; arrow A indicates the direction of refrigerant flow for cooling, and arrow B indicates the direction of refrigerant flow for heating.

[0052] A branch line is connected in parallel on both the refrigerant pipeline between the outdoor heat exchanger and the radiator and the refrigerant pipeline between the indoor heat exchanger and the radiator, and a second throttling component is provided on the branch line; optionally, the second throttling component on the branch line of the refrigerant pipeline between the outdoor heat exchanger and the radiator is the refrigeration auxiliary electronic expansion valve 4; the second throttling component on the branch line of the refrigerant pipeline between the indoor heat exchanger and the radiator is the heating auxiliary electronic expansion valve 8.

[0053] The heat exchange cycle includes a refrigeration cycle and a heating cycle. The refrigeration cycle includes, in sequence, a compressor 1, a four-way valve 11, an outdoor heat exchanger 2, an outdoor unit electrical control device 6, a refrigeration electronic expansion valve 9, an outdoor heat exchanger 10, a four-way valve 11, and the compressor 1. The refrigeration electronic expansion valve 9 is the first throttling component during cooling. The heating cycle includes, in sequence, a compressor 1, a four-way valve 11, an outdoor heat exchanger 10, an outdoor unit electrical control device 6, a heating electronic expansion valve 3, an outdoor heat exchanger 2, a four-way valve 11, and the compressor 1. The heating electronic expansion valve 3 is the first throttling component during heating.

[0054] After the cooling mode is turned on, the refrigerant will follow... Figure 3 The refrigerant flows in the direction of arrow A. The high-temperature, high-pressure refrigerant ejected from the exhaust port of compressor 1 enters the outdoor heat exchanger 2 through the four-way valve 11. In the outdoor heat exchanger 2, it is cooled into a high-pressure, room-temperature liquid refrigerant. After passing through the refrigeration electronic expansion valve 9, it becomes a low-temperature, low-pressure liquid refrigerant. After absorbing heat in the outdoor heat exchanger 10, it becomes a low-pressure, room-temperature gaseous refrigerant and enters the compressor 1 for compression into a high-temperature, high-pressure gaseous refrigerant, completing one heat exchange cycle of the refrigeration cycle. In cooling mode, as shown in... Figure 3The illustrated circulation loop incorporates an auxiliary electronic expansion valve 4 to perform a diversion-throttling-merging process on the ambient refrigerant at the outdoor heat exchanger outlet. When the outdoor ambient temperature is detected to be greater than or equal to a first preset threshold and the electronic control current is greater than a preset current, the auxiliary electronic expansion valve 4 changes from a closed state to an open state, throttling the portion of the refrigerant flowing through it. The low-temperature refrigerant throttled by the auxiliary electronic expansion valve 4 mixes with the ambient refrigerant that has not been throttled by the auxiliary electronic expansion valve 4, and the mixed refrigerant is used to cool the outdoor unit's electronic control equipment, which generates heat.

[0055] After turning on the heating mode, the refrigerant follows Figure 3 The refrigerant flows in the direction of arrow B. The high-temperature, high-pressure refrigerant ejected from the exhaust port of compressor 1 enters the outdoor heat exchanger 10 through the four-way valve 11. In the outdoor heat exchanger 10, it is cooled into a high-pressure, room-temperature liquid refrigerant. After passing through the throttling device 3, it becomes a low-temperature, low-pressure liquid refrigerant. After absorbing heat in the outdoor heat exchanger 2, it becomes a low-pressure, room-temperature gaseous refrigerant and enters the compressor 1 for compression into a high-temperature, high-pressure gaseous refrigerant, completing one heat exchange cycle. In heating mode, as shown in the image... Figure 3 The illustrated circulation loop incorporates an auxiliary electronic expansion valve 8 to perform a diversion-throttling-merging process on the ambient temperature refrigerant at the indoor heat exchanger outlet. When the outdoor ambient temperature is detected to be less than or equal to a second preset threshold and the electronic control current is greater than a preset current, the auxiliary electronic expansion valve 8 changes from a closed state to an open state, throttling a portion of the refrigerant flowing through it. The low-temperature refrigerant throttled by the auxiliary electronic expansion valve 8 mixes with the ambient temperature refrigerant that has not been throttled by the auxiliary electronic expansion valve 8. The mixed refrigerant then passes through the heating outdoor unit's electronic control equipment for cooling.

[0056] Reference Figure 2 , Figure 2 This is a schematic flowchart illustrating an embodiment of a heat dissipation method for outdoor electrical control equipment according to the present invention. The heat dissipation method for the outdoor electrical control equipment includes the following steps:

[0057] Step S10: Obtain the outdoor ambient temperature and the electrical control current of the outdoor electrical control equipment.

[0058] Step S20: When the outdoor ambient temperature meets the preset conditions and the electronic control current is greater than the preset current, control the second throttling component on the high-voltage side to open.

[0059] Optionally, the preset conditions include:

[0060] The outdoor ambient temperature is greater than or equal to the first preset threshold.

[0061] The outdoor ambient temperature is less than or equal to the second preset threshold, and the first preset threshold is greater than the second preset threshold.

[0062] The first preset threshold is a preset value used to characterize extreme high temperatures. When the outdoor ambient temperature is greater than or equal to the first preset threshold, the cooling mode is activated by default and the unit operates at high frequency. Therefore, the first preset threshold can be preset based on the default situation of activating the cooling mode and operating at high frequency. When the outdoor ambient temperature is greater than or equal to the first preset threshold, it indicates an extreme operating condition where the outdoor electrical control equipment has a large current and high power consumption, requiring strong cooling. In this case, the second throttling component on the high-pressure side needs to be opened to throttle the refrigerant. The low-temperature refrigerant that has passed through the auxiliary electronic expansion valve 4 and the room-temperature refrigerant that has not passed through the auxiliary electronic expansion valve 4 are mixed. The mixed refrigerant is then used to cool the heated outdoor unit electrical control equipment. When the outdoor ambient temperature is greater than or equal to the first preset threshold, the second throttling component on the high-pressure side is the auxiliary electronic expansion valve 4. As an example, the first preset threshold is 43°C.

[0063] The second preset threshold is also a preset value, used to characterize extreme low temperatures. When the outdoor ambient temperature is less than or equal to the second preset threshold, the heating mode is turned on by default and the unit operates at high frequency. Therefore, the second preset threshold can be preset based on the default situation of the heating mode being turned on and operating at high frequency. When the outdoor ambient temperature is less than or equal to the second preset threshold, it indicates that this also corresponds to an extreme working condition, where the outdoor electrical control equipment has a large current and high power consumption, requiring strong heating. In this case, the second throttling component on the high-pressure side needs to be opened to throttle the refrigerant. The low-temperature refrigerant throttled by the auxiliary electronic expansion valve 8 and the normal-temperature refrigerant not throttled by the auxiliary electronic expansion valve 4 are mixed, and the mixed refrigerant is used to cool down the outdoor unit's electrical control equipment. When the outdoor ambient temperature is less than or equal to the second preset threshold, the second throttling component on the high-pressure side is the auxiliary electronic expansion valve 9. As an example, the first preset threshold is -15℃.

[0064] Optionally, step S20 includes:

[0065] When the outdoor ambient temperature is greater than or equal to the first preset threshold, the second throttling component on the branch of the refrigerant pipeline connected in parallel between the outdoor heat exchanger and the radiator is opened, wherein the refrigerant pipeline between the outdoor heat exchanger and the radiator is a high-pressure side refrigerant pipeline when the outdoor ambient temperature is greater than or equal to the first preset threshold.

[0066] And / or,

[0067] When the outdoor ambient temperature is less than or equal to the second preset threshold, the second throttling component on the parallel branch of the refrigerant pipeline between the indoor heat exchanger and the radiator is opened, wherein when the outdoor ambient temperature is greater than or equal to the first preset threshold, the refrigerant pipeline between the indoor heat exchanger and the radiator is a high-pressure side refrigerant pipeline.

[0068] Reference Figure 4 In cooling mode, as Figure 3 An auxiliary electronic expansion valve 4 is added to the loop shown to perform a diversion-throttling-merging process on the ambient temperature refrigerant at the outlet of the outdoor heat exchanger. The main steps of this process are: (1) When the outdoor ambient temperature is detected to be greater than or equal to the first preset threshold Tc and the electronic control current is greater than the preset current Ac, the electronic control strong heat dissipation mode is entered; (2) In the strong heat dissipation mode, the auxiliary electronic expansion valve 4 is adjusted from the closed state to the open state to throttle the refrigerant flowing through it; (3) The low temperature refrigerant throttled by the auxiliary electronic expansion valve 4 and the ambient temperature refrigerant that has not been throttled by the auxiliary electronic expansion valve 4 are mixed, and the mixed refrigerant is cooled down by passing through the heating outdoor unit electronic control equipment. In the cooling mode, when the outdoor ambient temperature is detected to be greater than or equal to the first preset threshold and the electronic control current is greater than the preset current, the auxiliary electronic expansion valve 4 is adjusted from the closed state to the open state to throttle the refrigerant flowing through it. The low-temperature refrigerant, throttled by the auxiliary electronic expansion valve 4, and the room-temperature refrigerant, not throttled by the auxiliary electronic expansion valve 4, are mixed. The mixed refrigerant is then used to cool the outdoor unit's electrical control equipment, which generates heat. At this point, the high-pressure side refrigerant piping connects the outdoor heat exchanger and the radiator.

[0069] This effectively improves the reliability of outdoor unit electrical control equipment under extreme cooling conditions such as high temperature, clogged outdoor heat exchangers, or high current, and reduces the maintenance rate of outdoor unit electrical control equipment.

[0070] Accordingly, refer to Figure 5 In heating mode, as Figure 3An auxiliary electronic expansion valve 8 is added to the loop shown to perform a diversion-throttling-merging process on the ambient temperature refrigerant at the outlet of the indoor heat exchanger. The main steps of this process are: (1) When the outdoor ambient temperature is detected to be less than or equal to the second preset threshold Th and the electronic control current is greater than the preset current Ah, the electronic control strong heat dissipation mode is entered; (2) In the strong heat dissipation mode, the auxiliary electronic expansion valve 8 is adjusted from the closed state to the open state to throttle the refrigerant flowing through it; (3) The low temperature refrigerant throttled by the auxiliary electronic expansion valve 8 and the ambient temperature refrigerant that has not been throttled by the auxiliary electronic expansion valve 8 are mixed, and the mixed refrigerant is cooled down by passing through the heating outdoor unit electronic control equipment. In the heating mode, when the outdoor ambient temperature is detected to be less than or equal to the second preset threshold and the electronic control current is greater than the preset current, the auxiliary electronic expansion valve 8 is adjusted from the closed state to the open state to throttle the refrigerant flowing through it. The low-temperature refrigerant, throttled by the auxiliary electronic expansion valve 8, and the room-temperature refrigerant, not throttled by the auxiliary electronic expansion valve 8, are mixed. The mixed refrigerant is then cooled by the heating outdoor unit's electrical control equipment. At this time, the high-pressure side refrigerant pipeline is the refrigerant pipeline between the indoor heat exchanger and the radiator.

[0071] Therefore, it effectively improves the reliability of outdoor unit electrical control equipment under extreme heating conditions such as low temperature and high frequency, outdoor heat exchanger blockage, or high current, and reduces the maintenance rate of outdoor unit electrical control equipment.

[0072] This embodiment proposes a heat dissipation method for outdoor electrical control equipment. The method is applied to an air conditioner, which includes a heat exchange circulation loop, a radiator, and an outdoor unit electrical control device. The radiator is used to dissipate heat from the outdoor unit electrical control device and is connected in series between the outdoor heat exchanger and the indoor heat exchanger in the heat exchange circulation loop. A branch is connected in parallel on both the refrigerant pipeline between the outdoor heat exchanger and the radiator and the refrigerant pipeline between the indoor heat exchanger and the radiator. A second throttling device is provided on the branch.

[0073] When the outdoor ambient temperature meets the preset conditions and the electrical control current of the outdoor electrical control equipment is greater than the preset current, the second throttling component on the high-pressure side is opened. Compared with air cooling and refrigerant cooling, this application, based on the outdoor ambient temperature and the electrical control current of the outdoor electrical control equipment, determines that an extreme operating condition is being encountered. It then controls the second throttling component on the parallel branch of the refrigerant pipeline on the high-pressure side to open, causing the refrigerant at the outdoor heat exchanger outlet to split into branch refrigerant and main refrigerant. The branch refrigerant passing through the second throttling component cools the main refrigerant in the original circulating return flow, allowing the two streams of mixed refrigerant to enter the radiator and thus dissipate heat from the outdoor unit's electrical control equipment. This improves the heat dissipation efficiency of the outdoor electrical control equipment and provides a simple and effective way to cool the outdoor electrical control equipment under extreme operating conditions.

[0074] In another embodiment of the heat dissipation method for an outdoor electrical control device according to the present invention, after the step of controlling the opening of the second throttling component on the high-voltage side, the method further includes:

[0075] Obtain the inlet refrigerant temperature of the radiator;

[0076] Adjust the opening degree of the second throttling component on the high-pressure side according to the temperature of the imported refrigerant.

[0077] In cooling mode, as Figure 3 The illustrated circulation loop incorporates an auxiliary electronic expansion valve 4 to perform a diversion-throttling-merging process on the ambient refrigerant at the outdoor heat exchanger outlet. When the outdoor ambient temperature is detected to be greater than or equal to a first preset threshold and the electronic control current is greater than a preset current, the auxiliary electronic expansion valve 4 changes from a closed state to an open state, throttling the portion of the refrigerant flowing through it. The low-temperature refrigerant throttled by the auxiliary electronic expansion valve 4 mixes with the ambient refrigerant that has not been throttled by the auxiliary electronic expansion valve 4, and the mixed refrigerant is used to cool the outdoor unit's electronic control equipment, which generates heat.

[0078] In heating mode, when the outdoor ambient temperature is detected to be less than or equal to a second preset threshold and the electronic control current is greater than a preset current, the auxiliary electronic expansion valve 8 changes from a closed state to an open state, throttling a portion of the refrigerant flowing through it. The low-temperature refrigerant throttled by the auxiliary electronic expansion valve 8 mixes with the room-temperature refrigerant that has not been throttled by the auxiliary electronic expansion valve 8. The mixed refrigerant then passes through the heating outdoor unit's electronic control equipment for cooling. At this time, the high-pressure side refrigerant pipeline is the refrigerant pipeline between the indoor heat exchanger and the radiator.

[0079] In control of such Figure 3 The auxiliary electronic expansion valves 4 and 8 added to the circulation loop shown are used to divert, throttle, and merge the ambient temperature refrigerant at the outlet of the outdoor heat exchanger. During this process, the valve openings of the auxiliary electronic expansion valves 4 and 8 need to be precisely controlled and adjusted according to the inlet refrigerant temperature of the radiator. This ensures that the temperature of the refrigerant flowing through the outdoor unit's electrical control equipment 6 is not too low, which would cause condensation inside the outdoor unit's electrical control equipment, nor too high, which would worsen the cooling effect on the outdoor unit's electrical control equipment.

[0080] Optionally, the step of adjusting the opening of the second throttling component on the high-pressure side according to the inlet refrigerant temperature includes:

[0081] If the temperature of the imported refrigerant is within the preset temperature range, the current opening of the second throttling component on the high-pressure side is maintained.

[0082] If the temperature of the imported refrigerant is within the preset temperature range, it means that the mixed refrigerant corresponding to the current opening will not cause condensation inside the outdoor unit's electrical control equipment due to excessively low temperature, nor will it cause a decrease in the cooling effect on the outdoor unit's electrical control equipment due to excessively high temperature. Thus, maintaining the current opening of the second throttling component on the high-pressure side can ensure the cooling effect on the heat-generating outdoor unit's electrical control equipment.

[0083] Optionally, the step of adjusting the opening of the second throttling component on the high-pressure side according to the inlet refrigerant temperature includes:

[0084] If the temperature of the inlet refrigerant is lower than the minimum value of the preset temperature range, the opening of the second throttling component on the high-pressure side is increased until the temperature of the inlet refrigerant is within the preset temperature range.

[0085] If the inlet refrigerant temperature is lower than the minimum value of the preset temperature range, there is a possibility that condensation may occur inside the outdoor unit's electrical control equipment due to the low mixed refrigerant temperature corresponding to the current opening. Therefore, it is necessary to increase the opening of the second throttling component on the high-pressure side until the inlet refrigerant temperature is within the preset temperature range and not lower than the minimum value of the preset temperature range.

[0086] Reference Figure 6 The control method for the throttling capacity of the auxiliary electronic expansion valve 4 during the refrigeration process is as follows:

[0087] (1) Enters the powerful heat dissipation mode controlled by the electronic control system in cooling mode;

[0088] (2) The auxiliary electronic expansion valve 4 operates at a preset opening degree, and the temperature sensor 5 collects the refrigerant temperature t1 before entering the outdoor unit's electrical control equipment, which is the inlet refrigerant temperature of the radiator.

[0089] (3) Determine whether the temperature t1 is within the preset temperature range (Ta, Tb), where Ta is the preset minimum cooling temperature, which is set to prevent the mixed refrigerant temperature from being too low, causing condensation inside the outdoor unit's electrical control equipment; Tb is the preset maximum cooling temperature. Furthermore, Tb is set to ambient temperature - Δtb, where Δtb is always greater than zero, representing the preset cooling temperature difference for refrigeration. The larger Δtb is, the better the cooling effect on the outdoor unit's electrical control equipment.

[0090] (4) If the temperature t1 is within the preset temperature range (Ta, Tb), the auxiliary electronic expansion valve 4 maintains its current opening; otherwise, if t1 is less than Ta, the opening of the electronic expansion valve 4 increases, and if t1 is greater than Tb, the opening of the electronic expansion valve 4 decreases. After each opening adjustment for a preset period of N seconds, it is determined whether t1 is within the preset temperature range (Ta, Tb).

[0091] Therefore, it effectively improves the heat dissipation efficiency of the outdoor unit's electrical control equipment in high-temperature, high-frequency cooling environments;

[0092] 4. Effectively increases the maximum operating frequency of outdoor unit electrical control equipment under high-temperature cooling conditions;

[0093] 5. Effectively increases cooling capacity under high temperature conditions, enhancing user comfort during high-temperature cooling.

[0094] Optionally, the step of adjusting the opening of the second throttling component on the high-pressure side according to the inlet refrigerant temperature includes:

[0095] If the temperature of the inlet refrigerant is greater than the maximum value of the preset temperature range, the opening of the second throttling component on the high-pressure side is reduced until the temperature of the inlet refrigerant is within the preset temperature range.

[0096] If the inlet refrigerant temperature is greater than the maximum value of the preset temperature range, there is a possibility that the cooling effect on the outdoor unit's electrical control equipment may be reduced due to the excessively high mixed refrigerant temperature corresponding to the current opening. Therefore, it is necessary to reduce the opening of the second throttling component on the high-pressure side until the inlet refrigerant temperature is within the preset temperature range and does not exceed the maximum value of the preset temperature range.

[0097] Accordingly, refer to Figure 7 The control method for the throttling capacity of the auxiliary electronic expansion valve 8 during the heating process is as follows:

[0098] (1) Enter the electronically controlled powerful heat dissipation mode in heating mode;

[0099] (2) The auxiliary electronic expansion valve 8 operates at a preset opening degree, and the temperature sensor 7 collects the refrigerant temperature t1 before entering the outdoor unit's electrical control equipment, which is the inlet refrigerant temperature of the radiator.

[0100] (3) Determine whether the temperature t2 is within the preset temperature range (Tm, Tn), where Tm is the preset minimum cooling temperature, which is set to prevent the mixed refrigerant temperature from being too low, causing condensation inside the outdoor unit's electrical control equipment; Tn is the preset maximum cooling temperature. Furthermore, Tn is set to Tn = temperature in the middle of the indoor heat exchanger - Δtn, where Δtn is always greater than zero and is the preset cooling temperature difference for heating. The larger Δtn is, the better the cooling effect on the outdoor unit's electrical control equipment.

[0101] (4) If the temperature t2 is within the preset temperature range (Tm, Tn), the auxiliary electronic expansion valve 8 maintains its current opening; otherwise, if t2 is less than Tm, the opening of the electronic expansion valve 8 increases, and if t2 is greater than Tn, the opening of the electronic expansion valve 8 decreases. After each opening adjustment for a preset period of N seconds, it is determined whether t2 is within the preset temperature range (Tm, Tn).

[0102] Therefore, it effectively improves the heat dissipation efficiency of the outdoor unit's electrical control equipment in low-temperature, high-frequency heating environments;

[0103] 7. Effectively increases the maximum operating frequency of the outdoor unit's electrical control equipment under low-temperature heating conditions;

[0104] 8. Effectively improves the heating capacity at low temperatures, enhancing the user's comfort experience during low-temperature heating.

[0105] Furthermore, embodiments of the present invention also provide a heat dissipation device for outdoor electrical control equipment, the outdoor unit electrical control heat dissipation device comprising:

[0106] The acquisition module is used to acquire the outdoor ambient temperature and the electrical control current of the outdoor electrical control equipment.

[0107] The control module is used to control the second throttling component on the high-voltage side to open when the outdoor ambient temperature meets the preset conditions and the electronic control current is greater than the preset current.

[0108] The heat dissipation device for outdoor electrical control equipment provided by this invention employs the heat dissipation method for outdoor electrical control equipment described in the above embodiments, solving the technical problem in the prior art of difficulty in simply and effectively dissipating heat from outdoor electrical control equipment under extreme operating conditions. Compared with the prior art, the beneficial effects of the heat dissipation device for outdoor electrical control equipment provided in this invention are the same as those of the heat dissipation method for outdoor electrical control equipment provided in the above embodiments, and other technical features of the heat dissipation device for outdoor electrical control equipment are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0109] Furthermore, embodiments of the present invention also provide an air conditioner, the air conditioner further including a processor, a memory, and a computer program stored in the memory that can be executed by the processor, wherein when the computer program is executed by the processor, it implements the steps of the heat dissipation method for outdoor electrical control equipment as described in any of the preceding claims, so that the heat sink dissipates heat from the outdoor electrical control equipment.

[0110] Furthermore, embodiments of the present invention also provide a computer-readable storage medium storing a heat dissipation program for an outdoor electronic control device. When the heat dissipation program for the outdoor electronic control device is executed by a processor, it implements the steps of the heat dissipation method for the outdoor electronic control device as described in any of the preceding claims.

[0111] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or system. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or system that includes that element.

[0112] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0113] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0114] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A heat dissipation method for outdoor electrical control equipment, characterized in that, The method is applied to an air conditioner, which includes a heat exchange circulation loop, a radiator, and outdoor unit electrical control equipment. The radiator is used to dissipate heat from the outdoor unit electrical control equipment. The radiator is connected in series between the outdoor heat exchanger and the indoor heat exchanger in the heat exchange circulation loop. A branch is connected in parallel on both the refrigerant pipeline between the outdoor heat exchanger and the radiator, and the refrigerant pipeline between the indoor heat exchanger and the radiator. A second throttling device is provided on each branch. The outdoor unit electrical control heat dissipation method includes the following steps: Obtain the outdoor ambient temperature and the electrical control current of the outdoor electrical control equipment; When the outdoor ambient temperature meets the preset conditions and the electronic control current is greater than the preset current, the second throttling component on the high-voltage side is controlled to open. Obtain the inlet refrigerant temperature of the radiator; The opening degree of the second throttling component on the high-pressure side is adjusted according to the temperature of the imported refrigerant, wherein the second throttling component includes an auxiliary electronic expansion valve disposed in the heat exchange circulation loop.

2. The heat dissipation method for outdoor electrical control equipment as described in claim 1, wherein the preset conditions include: The outdoor ambient temperature is greater than or equal to the first preset threshold. The outdoor ambient temperature is less than or equal to the second preset threshold, and the first preset threshold is greater than the second preset threshold.

3. The heat dissipation method for outdoor electrical control equipment as described in claim 2, characterized in that, When the outdoor ambient temperature meets a preset condition and the electronic control current is greater than a preset current, the step of controlling the second throttling component on the high-voltage side to open includes: When the outdoor ambient temperature is greater than or equal to the first preset threshold, the second throttling component on the branch of the refrigerant pipeline connected in parallel between the outdoor heat exchanger and the radiator is opened, wherein the refrigerant pipeline between the outdoor heat exchanger and the radiator is a high-pressure side refrigerant pipeline when the outdoor ambient temperature is greater than or equal to the first preset threshold. And / or, When the outdoor ambient temperature is less than or equal to the second preset threshold, the second throttling component on the parallel branch of the refrigerant pipeline between the indoor heat exchanger and the radiator is opened, wherein when the outdoor ambient temperature is greater than or equal to the first preset threshold, the refrigerant pipeline between the indoor heat exchanger and the radiator is a high-pressure side refrigerant pipeline.

4. The heat dissipation method for outdoor electrical control equipment as described in claim 1, characterized in that, The step of adjusting the opening of the second throttling component on the high-pressure side according to the temperature of the inlet refrigerant includes: If the temperature of the imported refrigerant is within the preset temperature range, the current opening of the second throttling component on the high-pressure side is maintained.

5. The heat dissipation method for outdoor electrical control equipment as described in claim 1, characterized in that, The step of adjusting the opening of the second throttling component on the high-pressure side according to the temperature of the inlet refrigerant includes: If the temperature of the inlet refrigerant is lower than the minimum value of the preset temperature range, the opening of the second throttling component on the high-pressure side is increased until the temperature of the inlet refrigerant is within the preset temperature range.

6. The heat dissipation method for outdoor electrical control equipment as described in claim 1, characterized in that, The step of adjusting the opening of the second throttling component on the high-pressure side according to the temperature of the inlet refrigerant includes: If the temperature of the inlet refrigerant is greater than the maximum value of the preset temperature range, reduce the opening of the second throttling component on the high-pressure side until the temperature of the inlet refrigerant is within the preset temperature range.

7. A heat dissipation device for outdoor electrical control equipment, characterized in that, The outdoor unit's electronically controlled cooling system includes: The acquisition module is used to acquire the outdoor ambient temperature and the electrical control current of the outdoor electrical control equipment. The control module is used to control the second throttling component on the high-voltage side to open when the outdoor ambient temperature meets the preset conditions and the electronic control current is greater than the preset current. The acquisition module is also used to: acquire the inlet refrigerant temperature of the radiator; The control module is also used to: adjust the opening of the second throttling component on the high-pressure side according to the temperature of the inlet refrigerant, wherein the second throttling component includes an auxiliary electronic expansion valve provided in the heat exchange circulation loop.

8. An air conditioner, characterized in that, The air conditioner further includes a processor, a memory, and a computer program stored in the memory that can be executed by the processor, wherein when the computer program is executed by the processor, it implements the steps of the heat dissipation method for the outdoor electrical control device as described in any one of claims 1 to 6, so that the radiator dissipates heat from the outdoor electrical control device.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a heat dissipation program for an outdoor electrical control device, wherein when the heat dissipation program for the outdoor electrical control device is executed by a processor, it implements the steps of the heat dissipation method for the outdoor electrical control device as described in any one of claims 1 to 6.

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