Air conditioner

Abstract

An air conditioner relates to the technical field of air conditioners. The air conditioner comprises a refrigerating circuit and a heat dissipation device. An outlet of the compressor is connected with the outdoor heat exchanger; the throttling device is arranged on a pipeline between the indoor and outdoor heat exchangers; the heat-conducting component is connected with the refrigerant radiator in a heat-conducting manner; the first refrigerant radiating pipeline is communicated with the second refrigerant radiating pipeline, and the first refrigerant radiating pipeline and the second refrigerant radiating pipeline are both connected with the refrigerant radiator in a heat conduction mode or both communicated with the refrigerant radiator; the control valve is arranged on the first refrigerant radiating pipeline or the second refrigerant radiating pipeline; the controller is connected with the control valve; a refrigerant inlet of the first refrigerant radiating pipeline and a refrigerant outlet of the second refrigerant radiating pipeline are both communicated with the refrigerating loop so that part of liquid refrigerant in the refrigerating loop can be led into the refrigerant radiator, gaseous refrigerant generated by the refrigerant radiator can be transmitted back to the refrigerating loop, and the gaseous refrigerant is compressed into the liquid refrigerant through a compressor in the refrigerating loop to be circulated.

Description

[0001] This application is a divisional application of the Chinese patent application with application number 201911257523.3, application date December 10, 2019, and invention name “A heat dissipation device, air conditioner and control method and system of its heat dissipation device”. Technical Field

[0002] The present invention relates to the technical field of air conditioners, and in particular to an air conditioner. Background Art

[0003] Air conditioners are common household and commercial appliances, primarily used to regulate indoor temperature and provide a comfortable living or working environment. Traditional air conditioners typically consist of a compressor, condenser, and throttling device, transferring heat through the circulation of a refrigerant. However, with the advancement of science and technology, higher requirements have been placed on the heat dissipation performance of air conditioners. Especially in high-temperature environments, the heat dissipation efficiency of air conditioners directly affects their cooling performance and energy consumption. Therefore, optimizing the heat dissipation structure of air conditioners and improving their overall performance has become a pressing issue for those skilled in the art. Summary of the Invention

[0004] In view of the above problems, the present invention provides an air conditioner to achieve effective heat dissipation of the inverter of the air conditioner.

[0005] The embodiment of the present invention discloses an air conditioner, comprising: a refrigeration circuit and a heat dissipation device;

[0006] The refrigeration circuit includes a compressor, an indoor heat exchanger, an outdoor heat exchanger and a throttling device; wherein the inlet of the compressor is connected to the indoor heat exchanger, and the outlet of the compressor is connected to the outdoor heat exchanger; the throttling device is provided on the pipeline between the indoor heat exchanger and the outdoor heat exchanger;

[0007] The heat dissipation device includes a heat conduction component, a refrigerant radiator, a first refrigerant heat dissipation pipeline, a second refrigerant heat dissipation pipeline, a control valve and a controller; wherein the heat conduction component and the refrigerant radiator are connected in a heat conduction manner; the first refrigerant heat dissipation pipeline and the second refrigerant heat dissipation pipeline are connected, and the first refrigerant heat dissipation pipeline and the second refrigerant heat dissipation pipeline are both connected to the refrigerant radiator in a heat conduction manner, or the first refrigerant heat dissipation pipeline and the second refrigerant heat dissipation pipeline are both connected to the refrigerant radiator; the control valve is arranged on the first refrigerant heat dissipation pipeline or the second refrigerant heat dissipation pipeline; the controller is connected to the control valve;

[0008] The refrigerant inlet of the first refrigerant heat dissipation pipeline and the refrigerant outlet of the second refrigerant pipeline are both connected to the refrigeration circuit;

[0009] The controller is configured to control the opening, switching frequency or switching time of the control valve according to the temperature of the refrigerant radiator and the component to be cooled, so as to control the refrigerant flow in the refrigerant radiator by controlling the opening, switching frequency or switching time of the control valve.

[0010] Optionally, the refrigerant inlet of the first refrigerant heat dissipation pipeline is connected to the outlet end of the throttling device, and the refrigerant outlet of the second refrigerant heat dissipation pipeline is connected to the inlet end of the indoor heat exchanger.

[0011] Optionally, part of the liquid refrigerant flowing out of the throttling device flows into the first refrigerant heat dissipation pipeline, and part flows along the refrigeration circuit into the indoor heat exchanger;

[0012] The liquid refrigerant in the first refrigerant heat dissipation pipeline flows into the refrigerant radiator, absorbs heat from the refrigerant radiator and the component to be radiated, and is converted into gaseous refrigerant;

[0013] The second refrigerant heat dissipation pipeline outputs the gaseous refrigerant and the unreacted liquid refrigerant in the refrigerant radiator to the indoor heat exchanger.

[0014] Optionally, the refrigerant radiator has a microchannel, the refrigerant outlet of the first refrigerant heat dissipation pipeline is connected to the refrigerant inlet of the microchannel, and the refrigerant outlet of the microchannel is connected to the refrigerant inlet of the second refrigerant heat dissipation pipeline.

[0015] Optionally, the heat dissipation device further includes a compressor and a condenser;

[0016] The outlet of the condenser is connected to the inlet of the first refrigerant heat dissipation pipeline, and the inlet of the compressor is connected to the outlet of the second refrigerant heat dissipation pipeline;

[0017] The compressor is configured to compress the gaseous refrigerant output from the second refrigerant heat dissipation pipeline into a high-pressure and high-temperature gaseous refrigerant;

[0018] The condenser is configured to convert the high-temperature and high-pressure gaseous refrigerant into liquid refrigerant, and transfer the liquid refrigerant back to the refrigerant radiator through the first refrigerant heat dissipation pipeline.

[0019] Optionally, the heat dissipation device further includes a first temperature sensor and a second temperature sensor;

[0020] Wherein, the first temperature sensor is arranged on the refrigerant radiator, and the second temperature sensor is arranged on the component to be cooled; the controller is connected to the first temperature sensor and the second temperature sensor;

[0021] The controller is configured to obtain the temperature of the refrigerant radiator according to the temperature data measured by the first temperature sensor, and obtain the temperature of the component to be cooled according to the temperature data measured by the second temperature sensor.

[0022] Optionally, the air conditioner further comprises a gas-liquid separator;

[0023] The inlet of the gas-liquid separator is connected to the indoor heat exchanger, and the outlet of the gas-liquid separator is connected to the compressor;

[0024] The gas-liquid separator is configured to separate the gaseous refrigerant and the liquid refrigerant.

[0025] Optionally, the controller is specifically configured to:

[0026] If the temperature of the refrigerant radiator is less than or equal to the first preset temperature, or if the temperature of the refrigerant radiator is greater than the first preset temperature and the temperature of the component to be dissipated is less than the second preset temperature, the opening, switching frequency or switching time of the control valve is adjusted to reduce the refrigerant flow in the refrigerant heat dissipation pipeline, wherein the first preset temperature is less than the second preset temperature, and the first preset temperature is greater than or equal to the condensation temperature.

[0027] Optionally, the controller is specifically configured to:

[0028] If the temperature of the refrigerant radiator is greater than the first preset temperature and the temperature of the component to be dissipated heat is greater than or equal to the second preset temperature, the opening, switching frequency or switching time of the control valve is adjusted to increase the refrigerant flow in the refrigerant heat dissipation pipeline, wherein the first preset temperature is lower than the second preset temperature, and the first preset temperature is greater than or equal to the condensation temperature.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention discloses an air conditioner, which includes: a refrigeration circuit and a heat dissipation device; the refrigeration circuit includes a compressor, an indoor heat exchanger, an outdoor heat exchanger and a throttling device; wherein the inlet of the compressor is connected to the indoor heat exchanger, and the outlet of the compressor is connected to the outdoor heat exchanger; the throttling device is arranged on the pipeline between the indoor heat exchanger and the outdoor heat exchanger; the heat dissipation device includes a heat conduction component, a refrigerant radiator, a first refrigerant heat dissipation pipeline, a second refrigerant heat dissipation pipeline, a control valve and a controller; wherein the heat conduction component and the refrigerant radiator are connected in a heat conduction manner; the first refrigerant heat dissipation pipeline and the second refrigerant heat dissipation pipeline are connected, and the first refrigerant heat dissipation pipeline is connected to the second refrigerant heat dissipation pipeline. The first and second refrigerant heat dissipation pipelines are both connected to the refrigerant radiator in a heat conduction manner, or the first and second refrigerant heat dissipation pipelines are both connected to the refrigerant radiator; a control valve is provided on the first or second refrigerant heat dissipation pipeline; a controller is connected to the control valve; the refrigerant inlet of the first refrigerant heat dissipation pipeline and the refrigerant outlet of the second refrigerant pipeline are both connected to the refrigeration circuit; the controller is configured to: control the opening, switching frequency or switching time of the control valve according to the temperature of the refrigerant radiator and the component to be dissipated heat, so as to control the refrigerant flow rate in the refrigerant radiator by controlling the opening, switching frequency or switching time of the control valve. Thus, the refrigerant heat dissipation pipeline can be connected to the refrigeration circuit in the air conditioner to pass part of the liquid refrigerant in the refrigeration circuit into the refrigerant radiator, and to transmit the gaseous refrigerant generated by the refrigerant radiator back to the refrigeration circuit, and to be compressed into liquid refrigerant by the compressor in the refrigeration circuit for circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 A schematic structural diagram of an air conditioner provided by the present invention;

[0033] Figure 2 This is a structural schematic diagram of a heat dissipation device provided by the present invention. DETAILED DESCRIPTION

[0034] As mentioned in the background, safely and effectively dissipating heat from an air conditioner's inverter is a key concern for those skilled in the art. It should be noted that the inverter described in this application refers to a controller used to control an air conditioner, which can utilize both variable-frequency and fixed-frequency control. The term "inverter" is used here for ease of description only and should not be construed as limiting the scope of protection.

[0035] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0036] See also Figure 1 , which is a structural diagram of an air conditioner provided by the present invention. Figure 1 As shown in the figure, the air conditioner includes: a refrigeration circuit and a heat dissipation device. Figure 2 , which is a schematic diagram of a heat dissipation device provided in an embodiment of the present application.

[0037] Combine Figure 1 and Figure 2 As shown, the refrigeration circuit includes a compressor 17, an indoor heat exchanger 18, an outdoor heat exchanger 19, and a throttling device 20. The heat dissipation device includes a heat transfer component 10, a refrigerant radiator 11, a refrigerant heat dissipation pipeline 12 (including a first refrigerant heat dissipation pipeline 121 and a second refrigerant heat dissipation pipeline 122), a control valve 13, and a controller 14.

[0038] It is understandable that the heat-conducting component 10 is usually a component in the inverter 21. The controller 14 in the heat dissipation device can be a separate controller or a controller in the inverter 21, which is not limited in this application.

[0039] The connections within the refrigeration circuit are as follows: the inlet (i.e., the air intake) of compressor 17 is connected to indoor heat exchanger 18, and the outlet (i.e., the air discharge) of compressor 17 is connected to outdoor heat exchanger 19. A throttling device 20 is installed in the pipeline between indoor and outdoor heat exchangers 18, 19 to regulate the refrigerant flow.

[0040] The connections inside the heat sink are:

[0041] The heat conduction setting of the heat conduction component 10 and the refrigerant radiator 11 is required. The heat conduction setting refers to any setting mode that can achieve heat conduction between the heat conduction component 10 and the refrigerant radiator 11. In one example, Figure 2 As shown, the refrigerant radiator 11 can be arranged directly above the component to be dissipated 10 and in thermal contact with the component to be dissipated 10. The refrigerant radiator 11 and the component to be dissipated 10 can be fixed in thermal contact via a copper sheet or in direct thermal contact, so that the refrigerant radiator 11 absorbs heat from the component to be dissipated 10, thereby dissipating heat from the component to be dissipated 10.

[0042] like Figure 1As shown, the refrigerant heat dissipation pipeline 12 includes a first refrigerant heat dissipation pipeline 121 and a second refrigerant heat dissipation pipeline 122 , and the first refrigerant heat dissipation pipeline 121 and the second refrigerant heat dissipation pipeline 122 are connected.

[0043] In a specific implementation, the connected first refrigerant heat dissipation pipeline 121 and the second refrigerant heat dissipation pipeline 122 are both connected to the refrigerant radiator 11 in a heat conduction manner. Specifically, the refrigerant radiator 11 is a radiator made of metal, and the connected first refrigerant heat dissipation pipeline 121 and the second refrigerant heat dissipation pipeline 122 are both in direct contact with the refrigerant radiator 11. The liquid refrigerant flowing through the first refrigerant heat dissipation pipeline 121 and the second refrigerant heat dissipation pipeline 122 absorbs heat from the refrigerant radiator 11. After absorbing the heat, the liquid refrigerant is converted into a gaseous refrigerant. The gaseous refrigerant and unreacted liquid refrigerant are output to the outside of the first refrigerant heat dissipation pipeline 121 and the second refrigerant heat dissipation pipeline 122.

[0044] In another specific implementation, the connected first refrigerant heat dissipation pipeline 121 and the second refrigerant heat dissipation pipeline 122 are both connected to the refrigerant radiator 11. Specifically, the connected first refrigerant heat dissipation pipeline 121 and the second refrigerant heat dissipation pipeline 122 are connected to the microchannel inside the refrigerant radiator 11. Specifically, the refrigerant outlet of the first refrigerant heat dissipation pipeline 121 is connected to the refrigerant inlet of the microchannel, and the refrigerant outlet of the microchannel is connected to the refrigerant inlet of the second refrigerant heat dissipation pipeline 122. After the liquid refrigerant flows into the microchannel inside the refrigerant radiator 11 through the first refrigerant heat dissipation pipeline 121, it absorbs heat from the refrigerant radiator 11. After absorbing the heat, the liquid refrigerant is converted into gaseous refrigerant. The gaseous refrigerant and unreacted liquid refrigerant are output to the outside of the microchannel inside the refrigerant radiator 11 and output through the second refrigerant heat dissipation pipeline 122.

[0045] The control valve 13 can be provided on the first refrigerant heat dissipation pipeline 121, or the control valve 13 can also be provided on the second refrigerant heat dissipation pipeline 122 (eg Figure 1 ). The controller 13 is connected to the control valve.

[0046] The connection between the refrigeration circuit and the heat dissipation device is as follows: the refrigerant inlet of the first refrigerant heat dissipation pipeline 121 and the refrigerant outlet of the second refrigerant pipeline 122 are both connected to the refrigeration circuit. In a specific implementation, Figure 1As shown, the refrigerant inlet of the first refrigerant heat dissipation pipeline 121 is connected to the outlet end of the throttling device 20, and the refrigerant outlet of the second refrigerant heat dissipation pipeline 12 is connected to the inlet end of the indoor heat exchanger 18. Of course, the present application is not limited to this. In other embodiments, the refrigerant inlet of the first refrigerant heat dissipation pipeline 121 can also be connected to the inlet end of the throttling device 20, and the refrigerant outlet of the second refrigerant heat dissipation pipeline 122 can also be connected to the outlet end of the throttling device 20; or, the refrigerant inlet of the first refrigerant heat dissipation pipeline 121 can also be connected to the inlet end of the indoor heat exchanger 18, and the refrigerant outlet of the second refrigerant heat dissipation pipeline 122 can also be connected to the outlet end of the indoor heat exchanger 18. It should be noted that this application does not limit the connection method between the refrigeration circuit and the heat dissipation device.

[0047] Taking the example of a case where the refrigerant inlet of the first refrigerant heat dissipation pipeline 121 is connected to the outlet of the throttling device 20, and the refrigerant outlet of the second refrigerant heat dissipation pipeline 12 is connected to the inlet of the indoor heat exchanger 18, the refrigerant flow process is as follows: the liquid refrigerant flowing out of the throttling device 20 partially flows into the first refrigerant heat dissipation pipeline 121, and partially flows along the refrigeration circuit to the indoor heat exchanger 18 to evaporate and absorb heat. The liquid refrigerant in the first refrigerant heat dissipation pipeline 121 flows into the refrigerant radiator 11, absorbs heat from the refrigerant radiator 11 and the component to be dissipated 10, and is converted into a gaseous refrigerant. The second refrigerant heat dissipation pipeline 122 outputs the gaseous refrigerant and unreacted liquid refrigerant in the refrigerant radiator 11 to the indoor heat exchanger 18, where it flows along the refrigeration circuit to the compressor 17 and enters the refrigeration circuit circulation of the air conditioner.

[0048] For example, the refrigerant in the embodiment of the present application includes any one or more of R12, R22, R134a, R407c, and R32. The present application does not limit the specific refrigerant.

[0049] The controller 14 is configured to control the opening, switching frequency or switching time of the control valve 13 according to the temperature of the refrigerant radiator 11 and the component to be cooled 10, so as to control the refrigerant flow in the refrigerant radiator 11 by controlling the opening, switching frequency or switching time of the control valve 13.

[0050] Specifically, the control valve 13 can be an electronic expansion valve. Within a certain time period, the larger the opening of the control valve 13, the more frequently the control valve 13 is opened, and the longer the opening time, the greater the opening ratio of the control valve 13. Conversely, within a certain time period, the smaller the opening of the control valve 13, the less frequently the control valve 13 is opened, and the shorter the opening time, the smaller the opening ratio of the control valve 13. Furthermore, the greater the opening ratio of the control valve 13, the greater the refrigerant flow in the refrigerant heat dissipation pipeline 12. Conversely, the smaller the opening ratio of the control valve 13, the smaller the refrigerant flow in the refrigerant heat dissipation pipeline 12.

[0051] In a specific implementation, the heat dissipation device in the embodiment of the present application may further include a first temperature sensor 15 and a second temperature sensor 16. The first temperature sensor 15 is disposed on the refrigerant radiator 11, and the second temperature sensor 16 is disposed on the component to be dissipated 10. For example, the first temperature sensor 15 is disposed at a lower temperature location on the refrigerant radiator 11, and the second temperature sensor 16 is disposed at a lower temperature location on the component to be dissipated 10. The controller 14 is connected to the first temperature sensor 15 and the second temperature sensor 16.

[0052] The controller 14 is configured to obtain the temperature of the refrigerant radiator 11 according to the temperature data measured by the first temperature sensor 15 , and obtain the temperature of the component to be cooled 10 according to the temperature data measured by the second temperature sensor 16 .

[0053] After the first temperature sensor 15 detects the temperature of the refrigerant radiator 11 and the second temperature sensor 16 detects the temperature of the component to be cooled 10 , the controller 14 performs the following operations:

[0054] First, the controller 14 determines whether the temperature of the refrigerant radiator 11 is less than or equal to the first preset temperature Tb.

[0055] If the temperature of the refrigerant radiator 11 is less than or equal to the first preset temperature Tb, the opening, switching frequency or switching time of the control valve 13 is adjusted to reduce the refrigerant flow in the refrigerant heat dissipation pipeline 12, thereby gradually increasing the temperature of the refrigerant radiator 11 to avoid condensation of the refrigerant radiator 11 due to the refrigerant radiator temperature being too low, thereby affecting the safe operation of the inverter 21.

[0056] If the temperature of the refrigerant radiator 11 is greater than the first preset temperature Tb, it means that the condensation risk of the refrigerant radiator 11 is relatively small. At this time, it can be further determined whether the temperature of the heat dissipation component 10 is greater than or equal to the second preset temperature Ta.

[0057] If the temperature of the heat dissipation component 10 is greater than or equal to the second preset temperature Ta, it indicates that the heat dissipation component 10 is overheated. In this case, it is necessary to adjust the opening, switching frequency, or switching time of the control valve 13 to increase the refrigerant flow in the refrigerant heat dissipation pipeline 12 and reduce the temperature of the heat dissipation component 10.

[0058] If the temperature of the component 10 to be cooled is lower than the second preset temperature Ta, it indicates that the temperature of the component 10 to be cooled is within the preset range. In this case, the opening, switching frequency, or switching time of the control valve 13 can be adjusted to reduce the refrigerant flow in the refrigerant cooling pipe 12 to prevent the temperature of the component 10 to be cooled from being too low, thereby reducing the risk of condensation on the component 10 to be cooled.

[0059] It should be noted that the second preset temperature Ta is greater than the first preset temperature Tb. Furthermore, the first preset temperature Tb is greater than or equal to the condensation temperature. Since the heat dissipation component 10 is a heating element, the temperature of the heat dissipation component 10 is higher than the temperature of the refrigerant radiator 11. Therefore, as long as the temperature of the refrigerant radiator 11 is greater than the first preset temperature Tb, the temperature of the heat dissipation component 10 must also be greater than the first preset temperature Tb. In this way, neither the refrigerant radiator 11 nor the heat dissipation component 10 will be at risk of condensation.

[0060] For example, the first preset temperature Tb may be in the range of 10°C to 40°C, and the second preset temperature Ta may be in the range of 60°C to 70°C. It should be noted that the values ​​of the first preset temperature Tb and the second preset temperature Ta may be set according to the specific application environment of the heat dissipation device. This application does not impose any limitation on this.

[0061] It is understandable that devices such as thermocouples and thermometers can also be used to measure the temperature of the heat dissipation component 10 and the refrigerant radiator 11. This application does not limit this.

[0062] Thus, the air conditioner provided in the embodiment of the present application can control the temperature of the refrigerant radiator 11 to be near a first preset temperature (more specifically, above the first preset temperature) by controlling the refrigerant flow rate in the refrigerant radiator 11, thereby reducing the risk of condensation on the refrigerant radiator 11 and ensuring the safe operation of the inverter 21. Furthermore, the air conditioner provided in the embodiment of the present application can ensure the heat dissipation effect of the inverter 21 by controlling the temperature of the heat dissipation component 10 in the inverter 21 to be near a second preset temperature (more specifically, below the second preset temperature).

[0063] In another specific implementation, the air conditioner in the embodiment of the present application may further include a gas-liquid separator 22 (also known as a liquid reservoir or return air separator). The inlet of the gas-liquid separator 22 is connected to the indoor heat exchanger 18, receiving the gas-liquid mixed refrigerant from the indoor heat exchanger 18. The outlet of the gas-liquid separator 22 is connected to the compressor 17, delivering pure gaseous refrigerant to the compressor 17. The gas-liquid separator is configured to separate the gaseous refrigerant and the liquid refrigerant in the refrigeration circuit, preventing unevaporated liquid refrigerant from entering the compressor 17.

[0064] In another specific implementation, the air conditioner in the embodiment of the present application may further include a separate compressor and condenser. The condenser outlet is connected to the inlet of the refrigerant heat dissipation pipeline 12, and the compressor inlet is connected to the outlet of the refrigerant heat dissipation pipeline 12. The compressor is used to compress the gaseous refrigerant output from the refrigerant heat dissipation pipeline 12 into a high-temperature, high-pressure gaseous refrigerant. The condenser is used to convert the high-temperature, high-pressure gaseous refrigerant into liquid refrigerant and transfer the liquid refrigerant back to the refrigerant radiator 11, thereby forming an independent refrigerant heat dissipation circuit to dissipate heat from the component 10 to be dissipated.

[0065] In summary, the present invention discloses an air conditioner, which includes: a refrigeration circuit and a heat dissipation device; the refrigeration circuit includes a compressor, an indoor heat exchanger, an outdoor heat exchanger and a throttling device; wherein the inlet of the compressor is connected to the indoor heat exchanger, and the outlet of the compressor is connected to the outdoor heat exchanger; the throttling device is arranged on the pipeline between the indoor heat exchanger and the outdoor heat exchanger; the heat dissipation device includes a heat conduction component, a refrigerant radiator, a first refrigerant heat dissipation pipeline, a second refrigerant heat dissipation pipeline, a control valve and a controller; wherein the heat conduction component and the refrigerant radiator are connected in a heat conduction manner; the first refrigerant heat dissipation pipeline and the second refrigerant heat dissipation pipeline are connected, and the first refrigerant heat dissipation pipeline is connected to the second refrigerant heat dissipation pipeline. The heat pipe and the second refrigerant heat dissipation pipe are both connected to the refrigerant radiator in a heat conduction manner, or the first refrigerant heat dissipation pipe and the second refrigerant heat dissipation pipe are both connected to the refrigerant radiator; a control valve is provided on the first refrigerant heat dissipation pipe or the second refrigerant heat dissipation pipe; a controller is connected to the control valve; the refrigerant inlet of the first refrigerant heat dissipation pipe and the refrigerant outlet of the second refrigerant pipe are both connected to the refrigeration circuit; the controller is configured to: control the opening, switching frequency, or switching time of the control valve according to the temperature of the refrigerant radiator and the component to be dissipated heat, so as to control the refrigerant flow rate in the refrigerant radiator by controlling the opening, switching frequency, or switching time of the control valve. Thus, the refrigerant heat dissipation pipe can be connected to the refrigeration circuit in the air conditioner to pass part of the liquid refrigerant in the refrigeration circuit into the refrigerant radiator, and transfer the gaseous refrigerant generated by the refrigerant radiator back to the refrigeration circuit, and be compressed into liquid refrigerant by the compressor in the refrigeration circuit for circulation.

[0066] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0067] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air conditioner, characterized in that: include: Refrigeration circuit and heat dissipation device; The refrigeration circuit includes a compressor, an indoor heat exchanger, an outdoor heat exchanger and a throttling device; wherein the inlet of the compressor is connected to the indoor heat exchanger, and the outlet of the compressor is connected to the outdoor heat exchanger; the throttling device is provided on the pipeline between the indoor heat exchanger and the outdoor heat exchanger; The heat dissipation device includes a heat conduction component, a refrigerant radiator, a first refrigerant heat dissipation pipeline, a second refrigerant heat dissipation pipeline, a control valve and a controller; wherein the heat conduction component and the refrigerant radiator are connected in a heat conduction manner; the first refrigerant heat dissipation pipeline and the second refrigerant heat dissipation pipeline are connected, and the first refrigerant heat dissipation pipeline and the second refrigerant heat dissipation pipeline are both connected to the refrigerant radiator in a heat conduction manner, or the first refrigerant heat dissipation pipeline and the second refrigerant heat dissipation pipeline are both connected to the refrigerant radiator; the control valve is arranged on the first refrigerant heat dissipation pipeline or the second refrigerant heat dissipation pipeline; the controller is connected to the control valve; The refrigerant inlet of the first refrigerant heat dissipation pipeline and the refrigerant outlet of the second refrigerant pipeline are both connected to the refrigeration circuit; The controller is configured to control the opening, switching frequency or switching time of the control valve according to the temperature of the refrigerant radiator and the component to be cooled, so as to control the refrigerant flow in the refrigerant radiator by controlling the opening, switching frequency or switching time of the control valve.

2. The air conditioner according to claim 1, characterized in that The refrigerant inlet of the first refrigerant heat dissipation pipeline is connected to the outlet end of the throttling device, and the refrigerant outlet of the second refrigerant heat dissipation pipeline is connected to the inlet end of the indoor heat exchanger.

3. The air conditioner according to claim 2, characterized in that The liquid refrigerant flowing out of the throttling device partially flows into the first refrigerant heat dissipation pipeline, and partially flows along the refrigeration circuit to the indoor heat exchanger; The liquid refrigerant in the first refrigerant heat dissipation pipeline flows into the refrigerant radiator, absorbs heat from the refrigerant radiator and the component to be radiated, and is converted into gaseous refrigerant; The second refrigerant heat dissipation pipeline outputs the gaseous refrigerant and the unreacted liquid refrigerant in the refrigerant radiator to the indoor heat exchanger.

4. The air conditioner according to claim 3, characterized in that The refrigerant radiator has a microchannel, the refrigerant outlet of the first refrigerant heat dissipation pipeline is connected to the refrigerant inlet of the microchannel, and the refrigerant outlet of the microchannel is connected to the refrigerant inlet of the second refrigerant heat dissipation pipeline.

5. The air conditioner according to claim 1, characterized in that The heat dissipation device also includes a compressor and a condenser; The outlet of the condenser is connected to the inlet of the first refrigerant heat dissipation pipeline, and the inlet of the compressor is connected to the outlet of the second refrigerant heat dissipation pipeline; The compressor is configured to compress the gaseous refrigerant output from the second refrigerant heat dissipation pipeline into a high-pressure and high-temperature gaseous refrigerant; The condenser is configured to convert the high-temperature and high-pressure gaseous refrigerant into liquid refrigerant, and transfer the liquid refrigerant back to the refrigerant radiator through the first refrigerant heat dissipation pipeline.

6. The air conditioner according to claim 1, characterized in that The heat dissipation device further includes a first temperature sensor and a second temperature sensor; Wherein, the first temperature sensor is arranged on the refrigerant radiator, and the second temperature sensor is arranged on the component to be cooled; the controller is connected to the first temperature sensor and the second temperature sensor; The controller is configured to obtain the temperature of the refrigerant radiator according to the temperature data measured by the first temperature sensor, and obtain the temperature of the component to be cooled according to the temperature data measured by the second temperature sensor.

7. The air conditioner according to claim 3, characterized in that The air conditioner further comprises a gas-liquid separator; The inlet of the gas-liquid separator is connected to the indoor heat exchanger, and the outlet of the gas-liquid separator is connected to the compressor; The gas-liquid separator is configured to separate the gaseous refrigerant and the liquid refrigerant.

8. The air conditioner according to any one of claims 1 to 7, characterized in that: The controller is specifically configured to: If the temperature of the refrigerant radiator is less than or equal to the first preset temperature, or if the temperature of the refrigerant radiator is greater than the first preset temperature and the temperature of the component to be dissipated is less than the second preset temperature, the opening, switching frequency or switching time of the control valve is adjusted to reduce the refrigerant flow in the refrigerant heat dissipation pipeline, wherein the first preset temperature is less than the second preset temperature, and the first preset temperature is greater than or equal to the condensation temperature.

9. The air conditioner according to any one of claims 1 to 7, characterized in that: The controller is specifically configured to: If the temperature of the refrigerant radiator is greater than the first preset temperature and the temperature of the component to be dissipated heat is greater than or equal to the second preset temperature, the opening, switching frequency or switching time of the control valve is adjusted to increase the refrigerant flow in the refrigerant heat dissipation pipeline, wherein the first preset temperature is lower than the second preset temperature, and the first preset temperature is greater than or equal to the condensation temperature.

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