Heat dissipation device

Abstract

The heat dissipation device comprises a condensation assembly, a compressor, an evaporator, a first throttling device and a second throttling device, the output end of the compressor is connected with the input end of the condensation assembly through a first pipeline, and the output end of the evaporator is connected with the input end of the compressor through a second pipeline; the input end of the evaporator is connected with the output end of the condensation assembly through a third pipeline, the evaporator is further connected with the output end of the compressor through a fourth pipeline, the first throttling device is installed on the third pipeline, and the second throttling device is installed on the fourth pipeline. The flow of the refrigerant flowing through the condenser can be adjusted on the premise that the rotating speed and the air suction amount of the compressor are not changed, so that the heat release amount of the refrigerant in the condenser and the heat absorption amount of the refrigerant in the evaporator are changed, the refrigerating capacity can be rapidly adjusted according to the cooling requirement of the cooled equipment, the adjusting mode is high in reliability, and the cost is low. The temperature stability is better, the work of the cooled equipment does not need to be interrupted, and the working efficiency of the cooled equipment is improved.

Description

Technical Field

[0001] The present application relates to the field of heat dissipation technology, and in particular to a heat dissipation device. Background Art

[0002] In the field of laser cutting and welding, or other similar scenarios with intermittent high heat flux density heat load, the heat load is discontinuous and the upper and lower limits differ greatly, which requires the refrigeration system to be able to quickly increase or decrease the load according to the load changes to maintain a relatively stable temperature.

[0003] However, in the process of implementing the invention, the inventors found that the prior art has at least the following problems: When the compressor is running, the traditional refrigeration system can only reduce the load to 10%~20% of the maximum cooling capacity by reducing the operating frequency. When the load is even smaller, it can only be controlled by start-stop. In this case, on the one hand, the temperature stability is poor, which reduces the operating reliability of the cooled equipment; on the other hand, it often takes a while to wait from the start of the compressor to sufficient cooling output, that is, when the load of the cooled equipment increases from a low level, it may also take a while to wait, which restricts the working time of the cooled equipment. Summary of the invention

[0004] In order to overcome the problems existing in the above-mentioned related technologies, the main purpose of the present application is to provide a heat dissipation device with better temperature stability and capable of improving the working efficiency of the cooled equipment.

[0005] In order to achieve the above objectives, this application specifically adopts the following technical solutions: The present application provides a heat dissipation device, the heat dissipation device comprising: Condensation components; A compressor, wherein an output end of the compressor is connected to an input end of the condensing assembly through a first pipeline; an evaporator, wherein the output end of the evaporator is connected to the input end of the compressor through a second pipeline, the input end of the evaporator is connected to the output end of the condensing assembly through a third pipeline, and the evaporator is also connected to the output end of the compressor through a fourth pipeline; A first throttling device, the first throttling device is installed in the third pipeline; and A second throttling device, wherein the second throttling device is installed on the fourth pipeline.

[0006] In some embodiments, two ends of the fourth pipeline are respectively connected to the output end of the compressor and the input end of the evaporator.

[0007] In some embodiments, two ends of the fourth pipeline are respectively connected to an output end of the compressor and an output end of the evaporator.

[0008] In some embodiments, the heat dissipation device further includes a valve, which is installed on the fourth pipeline and is used to control the on-off of the fourth pipeline.

[0009] In some embodiments, the valve is configured as a third throttling device, the second throttling device and the third throttling device are connected in series to the fourth pipeline, and the internal leakage of the third throttling device is smaller than the internal leakage of the second throttling device.

[0010] In some embodiments, the valve comprises a solenoid valve or an electric valve.

[0011] In some embodiments, the second throttling device is provided in plurality, and the plurality of the second throttling devices are respectively configured as a plurality of capillaries, the valve is provided in plurality, and the plurality of the valves are respectively configured as a plurality of solenoid valves, and one of the capillary tubes and one of the solenoid valves are connected to form a control branch, and the plurality of the control branches are connected in parallel between the output end of the compressor and the input end of the evaporator.

[0012] In some embodiments, the heat dissipation device also includes a controller, which is connected to the compressor, the first throttling device, the second throttling device and the valve, and is used to control the operation of the compressor, the first throttling device, the second throttling device and the valve.

[0013] In some embodiments, the heat dissipation device further includes a frequency converter, which is connected to the compressor and is used to control the operating frequency of the compressor.

[0014] In some embodiments, the condensation component includes a condenser and a condensation fan, the input end of the condenser is connected to the output end of the compressor through the first pipeline, the output end of the condenser is connected to the input end of the evaporator through the third pipeline, and the condensation fan is used to accelerate the flow speed of the air around the condenser.

[0015] Compared with the prior art, the heat dissipation device of the present application has at least the following beneficial effects: The heat dissipation device of the present application includes a condensing component, a compressor, an evaporator, a first throttling device and a second throttling device. The output end of the compressor is connected to the input end of the condensing component through a first pipeline, the output end of the evaporator is connected to the input end of the compressor through a second pipeline, the input end of the evaporator is connected to the output end of the condensing component through a third pipeline, and the evaporator is also connected to the output end of the compressor through a fourth pipeline, the first throttling device is installed on the third pipeline, and the second throttling device is installed on the fourth pipeline. Compared with the prior art, the present application can adjust the refrigerant flow rate flowing through the condenser through the fourth pipeline and the second throttling device without changing the compressor speed and the suction volume, thereby changing the heat release of the refrigerant in the condenser and the heat absorption of the refrigerant in the evaporator, and then the cooling capacity can be quickly adjusted according to the cooling demand of the cooled equipment. The adjustment method has high reliability and better temperature stability, and there is no need to interrupt the operation of the cooled equipment, thereby improving the working efficiency of the cooled equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a heat dissipation device provided in an embodiment of the present application.

[0017] Figure 2 A schematic structural diagram of a heat dissipation device provided in another embodiment of the present application.

[0018] Figure 3 A schematic structural diagram of a heat dissipation device provided in yet another embodiment of the present application.

[0019] Figure 4 A schematic structural diagram of a heat dissipation device provided in yet another embodiment of the present application.

[0020] Figure ID: 1. Condensation assembly; 11. Condenser; 12. Condensation fan; 2. Compressor; 3. Evaporator; 4. First throttling device; 5. Second throttling device; 6. Valve; 7. First pipeline; 8. Second pipeline; 9. Third pipeline; 10. Fourth pipeline; 101. First control branch; 102. Second control branch. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In the description of this specification, it should be understood that the directional words such as "upper" and "lower" described in the embodiments of the present application are described at the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element.

[0024] In the related art, the heat dissipation device using compression refrigeration technology reduces the cooling capacity output mainly by reducing the compressor speed in the cooling capacity stage of 20%~100%; in the cooling capacity stage of 0~20%, the cooling capacity output is mainly reduced by controlling the start and stop of the compressor. For the solution of reducing the cooling capacity output by reducing the compressor speed, it is necessary to configure a frequency converter, which means additional cost. For the solution of reducing the cooling capacity output by controlling the start and stop of the compressor, due to the characteristics of the motor, the input voltage from the frequency converter to the motor is also low at a lower speed, resulting in insufficient output torque and greatly limiting the operating pressure range of the compressor. The heat dissipation device provided in this application can achieve the adjustment of the cooling capacity from -30% to 100% without configuring a frequency converter, and the load is added and reduced very quickly, and there is no waiting time for the load change. A frequency converter can also be configured to improve the operating energy efficiency.

[0025] Reference Figure 1As shown, the embodiment of the present application discloses a heat dissipation device, which includes a condensing assembly 1, a compressor 2, an evaporator 3, a first throttling device 4, a second throttling device 5 and a controller. The output end (exhaust port) of the compressor 2 is connected to the input end of the condensing assembly 1 through the first pipeline 7; the output end of the evaporator 3 is connected to the input end (intake port) of the compressor 2 through the second pipeline 8, the input end of the evaporator 3 is connected to the output end of the condensing assembly 1 through the third pipeline 9, and the evaporator 3 is also connected to the output end of the compressor 2 through the fourth pipeline 10. The first throttling device 4 is installed on the third pipeline 9, and the second throttling device 5 is installed on the fourth pipeline 10. The controller is connected to the compressor 2, the first throttling device 4 and the second throttling device 5, and is used to control the operation of the compressor 2, the first throttling device 4 and the second throttling device 5. It can be understood that the compressor 2, the condensing assembly 1, the first throttling device 4, and the evaporator 3 are connected in sequence to form a circulation loop, and the output end of the compressor 2 is also connected to the input end of the evaporator 3 through the fourth pipeline 10 to achieve bypass refrigeration. The evaporator 3 may adopt a cold plate or the like. Taking the evaporator 3 adopting a cold plate as an example, the cold plate is fitted to the target device (ie, the device to be cooled) to perform contact heat exchange to meet the heat dissipation requirements of the device.

[0026] Specifically, the condensing assembly 1 includes a condenser 11 and a condensing fan 12, the input end of the condenser 11 is connected to the output end of the compressor 2 through the first pipeline 7, and the output end of the condenser 11 is connected to the input end of the evaporator 3 through the third pipeline 9. The condensing fan 12 is arranged on the peripheral side of the condenser 11, for example, on the air inlet side or the air outlet side of the condenser 11, and is used to accelerate the flow speed of the air around the condenser 11. It can be understood that the compressor 2, the condenser 11, the first throttling device 4, and the evaporator 3 are connected in sequence to form a circulation loop.

[0027] Among them, the compressor 2 is a fluid machinery that compresses low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas. It can inhale low-temperature and low-pressure refrigerant gas from the second pipeline 8, and then drive the piston to compress it through the operation of the motor, and then discharge the high-temperature and high-pressure refrigerant gas to the first pipeline 7; the condenser 11 can be used to condense the high-temperature and high-pressure refrigerant gas discharged by the compressor into a medium-temperature and high-pressure refrigerant liquid, that is, the working process of the condenser is a process of heat release to the outside, and the condensing fan is used to transfer the heat in the condenser to the air; the evaporator is used to exchange heat with the target equipment, and the refrigerant in the evaporator absorbs the heat from the target equipment and evaporates into low-temperature and low-pressure refrigerant gas to achieve the refrigeration effect; the throttling device is a device that can control the fluid flow, pressure, speed, mixing effect, etc., and can play a role in throttling and reducing the pressure of the refrigerant flowing through.

[0028] In this embodiment, both ends of the fourth pipeline 10 are connected to the output end of the compressor 2 and the input end of the evaporator 3 respectively, and the heat dissipation device may further include a frequency converter, which is connected to the compressor 2 and can be used to control the operating frequency of the compressor 2. It is understandable that in other embodiments, the frequency converter may not be provided.

[0029] In some embodiments, the first throttling device 4 and the second throttling device 5 can be throttling devices suitable for gaseous refrigerant (ie, refrigerant gas, or gaseous refrigerant), such as mechanical throttling devices produced and sold by DANFOSS.

[0030] Compared with the conventional refrigeration system, the heat dissipation device of this embodiment adds a fourth pipeline 10 (bypass pipeline) connecting the output end of the compressor 2 and the output end of the first throttling device 4, that is, a fourth pipeline 10 connecting the output end of the compressor 2 and the input end of the evaporator 3 is added, and a second throttling device 5 is arranged on the bypass pipeline, so that the refrigerant flow rate flowing through the condenser 11 is reduced through the bypass pipeline without changing the speed and suction volume of the compressor 2, thereby reducing the heat release of the refrigerant in the condenser 11 and the heat absorption in the evaporator 3; at the same time, the heat carried by the bypassed refrigerant can be released to another part of the refrigerant flowing through the third pipeline 9, further reducing the heat absorbed by the evaporator 3 from the target device. In addition, the heat dissipation device of the present application has the ability to adjust the cooling capacity when the frequency converter is not configured, and can break through the unloading ratio of the minimum speed when the frequency converter is configured.

[0031] In actual application scenarios, when the inverter is not configured and load reduction is not required, or when the inverter is configured and the load is still within the inverter adjustment range and no additional load reduction is required, the second throttling device 5 is controlled to be in a closed state. At this time, the fourth pipeline 10 is in a closed state, and the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 2 all enters the condenser 11. The gaseous refrigerant is fully heat-released and converted into high-pressure liquid refrigerant in the condenser 11, and then passes through the first throttling device 4. After throttling and reducing the pressure by the first throttling device 4, it enters the evaporator 3, absorbs heat and evaporates in the evaporator 3 to become a low-temperature and low-pressure gas, and then flows back to the compressor 2. Because the refrigerant absorbs heat in the evaporator 3, the evaporator 3 is in a low-temperature state, so it can continuously take away the heat of the electronic devices in contact with it.

[0032] When load reduction is required, the second throttling device 5 is controlled to be partially open or fully open. At this time, a part of the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 2 is throttled and reduced in pressure by the second throttling device 5 and flows to the input end of the evaporator 3, and is mixed with the other part of the refrigerant that has been condensed by the condenser 11 and then throttled and reduced in pressure by the first throttling device 4, and then enters the evaporator 3 together, absorbs heat in the evaporator 3 and evaporates into a low-temperature and low-pressure gas, and then flows back to the compressor 2.

[0033] When load reduction is required in this embodiment: on the one hand, only a part of the refrigerant that can be refrigerated flows through the condenser 11, because the second throttling device 5 diverts a part of the refrigerant and reduces the refrigerant flowing through the condenser 11, so the heat absorbed by the refrigerant from the outside in the evaporator 3 is reduced, that is, the cooling capacity is reduced; on the other hand, the refrigerant diverted by the second throttling device 5 still carries a part of the heat, which is mixed with the refrigerant after passing through the condenser 11 and the first throttling device 4, resulting in a reduction in the heat absorbed by the entire refrigerant from the outside in the evaporator 3, further reducing the cooling capacity. Therefore, when switching from high load to low load operation, the present application only needs to gradually open the second throttling device 5, and there is no need to shut down the compressor 2 at extremely low load (less than 10%~20%) to cause the temperature to rise; conversely, when switching from low load to high load operation, it is also only necessary to gradually close the second throttling device 5, and there is no need to restart the compressor 2 and wait for sufficient cooling capacity output.

[0034] In addition, in this embodiment, since the heat of the diverted refrigerant is fully utilized, the cooling capacity at the evaporator 3 is small, that is, the unloading degree is low enough; in addition, during deep unloading, the refrigerant flow in the evaporator 3 is extremely large and the refrigerant flow rate is fast, it is easy to bring the refrigeration oil in the evaporator 3 back to the compressor 2, reducing the system reliability risk.

[0035] Based on the above embodiment, the present application also discloses another specific implementation mode. The difference between this embodiment and the above embodiment is that, referring to Figure 2 As shown, in this embodiment, the heat dissipation device further includes a valve 6, which is disposed in the fourth pipeline 10, and the valve 6 is connected to a controller, and the operation of the valve 6 is controlled by the controller to control the on-off of the fourth pipeline 10.

[0036] In this embodiment, the valve 6 can be set as the third throttling device, the second throttling device 5 and the third throttling device can be connected in series to the fourth pipeline 10 in sequence, and the internal leakage of the third throttling device can be less than the internal leakage of the second throttling device 5, wherein the second throttling device 5 can adopt a general throttling device (such as an electronic expansion valve, a capillary tube, a thermal expansion valve), and the valve 6 can be a device for controlling the on-off of the fourth pipeline 10, such as a solenoid valve or an electric valve. It can be understood that the second throttling device 5 can also adopt a throttling device suitable for gaseous refrigerant (that is, refrigerant gas, or gaseous refrigerant), such as a mechanical throttling device produced and sold by DANFOSS.

[0037] At present, the shutoff performance of most throttling devices is not very good. Even in the fully closed state, the upstream and downstream can still be connected through a tiny gap, that is, the throttling device still has a slight leakage in the "closed" state. Based on this, the present embodiment is provided with a second throttling device 5 and a third throttling device. The second throttling device 5 is mainly used to adjust the flow rate of the refrigerant flowing through the fourth pipeline 10, and the third throttling device is mainly used to control the on-off of the fourth pipeline 10. Therefore, the smaller the internal leakage of the third throttling device, the better, and the internal leakage of the third throttling device can be made smaller than the internal leakage of the second throttling device 5. Therefore, in the present embodiment, the second throttling device 5 adopts a general throttling device, and the valve 6 adopts a solenoid valve or an electric valve, so as to better control the flow rate of the refrigerant flowing through the fourth pipeline 10, and then control the cooling capacity of the heat dissipation device.

[0038] Based on the above embodiments, the present application also discloses another specific implementation method. The difference between this embodiment and the above embodiments is that, in this embodiment, the heat dissipation device has a fixed load reduction ratio, and the flow control valve can also be set as a non-adjustable throttling device to further reduce costs.

[0039] Specifically, the load reduction ratio refers to the ratio of actual output to nominal output, expressed as a percentage. For example, the nominal cooling capacity of a refrigeration system is 10kW, but by adjusting certain operating parameters such as compressor speed, fan speed or valve opening, the actual cooling capacity can be 6kW, which can be called a load reduction of 60%, or a load reduction of 40%. Fixed load reduction ratio means that the above ratio is not continuously adjustable, but only has some specific isolated gears (combinations), such as 25%, 50%, 75%, etc. For refrigeration systems with only fixed load reduction ratios, a combination of solenoid valves and capillaries can be used to achieve the purpose of reducing costs, because the combination of solenoid valves and capillaries is much lower in hardware and control costs than the combination of solenoid valves and other throttling devices.

[0040] Reference Figure 3As shown, the second throttling device 5 is provided with a plurality of capillaries of different specifications, and the valve 6 is also provided with a plurality of valves, and the plurality of valves 6 are provided with a plurality of solenoid valves, wherein a capillary tube and a solenoid valve are connected to form a control branch, and the plurality of control branches are connected in parallel to the fourth pipeline 10, that is, the plurality of control branches are connected in parallel between the output end of the compressor 2 and the input end of the evaporator 3. When controlling the refrigerant flow through the fourth pipeline 10, the refrigerant flow through the fourth pipeline 10 can be controlled by selecting to open a certain control branch, or by opening a plurality of control branches at the same time. Exemplarily, the first control branch 101 and the second control branch 102 are provided in this embodiment, so that when controlling, there can be a first gear of refrigerant flow when the first control branch 101 is opened alone, a second gear of refrigerant flow when the second control branch 102 is opened alone, and a third gear of refrigerant flow when the first control branch 101 and the second control branch 103 are opened at the same time. In other embodiments, the number and connection method of the capillaries can be adjusted according to application requirements.

[0041] Based on the above embodiment, the present application also discloses another specific implementation mode. The difference between this embodiment and the above embodiment is that, referring to Figure 4 As shown, in this embodiment, two ends of the fourth pipeline 10 are respectively connected to the output end of the compressor 2 and the output end of the evaporator 3 , that is, the fourth pipeline 10 is connected in parallel to the two ends of the compressor 2 .

[0042] In actual application scenarios, when the inverter is not configured and load reduction is not required, or when the inverter is configured and the frequency converter is still within the adjustment range and no additional load reduction is required, the second throttling device 5 is controlled to be in a closed state. At this time, the fourth pipeline 10 is in a closed state, and the high-temperature and high-pressure gaseous refrigerant discharged by the compressor 2 all enters the condenser 11. The gaseous refrigerant is fully heat-released and converted into high-pressure liquid refrigerant in the condenser 11, and then passes through the first throttling device 4. After throttling and reducing the pressure by the first throttling device 4, it enters the evaporator 3, absorbs heat and evaporates in the evaporator 3 to become a low-temperature and low-pressure gas, and then flows back to the compressor 2. Because the refrigerant absorbs heat in the evaporator 3, the evaporator 3 is in a low-temperature state, so it can continuously take away the heat of the electronic devices in contact with it.

[0043] When load reduction is required, the second throttling device 5 is controlled to be partially open or fully open. At this time, a part of the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 2 is condensed by the condenser 11 and then throttled and reduced in pressure by the first throttling device 4 before entering the evaporator 3, where it absorbs heat and evaporates into a low-temperature and low-pressure gas. It is then mixed with the other part of the refrigerant that has been throttled and reduced in pressure by the second throttling device 5 and flows back into the compressor 2 together.

[0044] In this embodiment, the meeting point of the refrigerant diverted by the second throttling device 5 and the refrigerant flowing through the condenser 11 is changed from the input end of the evaporator 3 to the output end of the evaporator 3, which can also achieve the purpose of unloading.

[0045] From the above, it can be seen that the present application, through the provision of the fourth pipeline and the second throttling device, can adjust the refrigerant flow rate flowing through the condenser through the fourth pipeline and the second throttling device without changing the compressor speed and the suction volume, thereby changing the heat release of the refrigerant in the condenser and the heat absorption in the evaporator, and then can quickly adjust the cooling capacity according to the cooling demand of the cooled equipment. The adjustment method has high reliability and better temperature stability, and there is no need to interrupt the operation of the cooled equipment, thereby improving the working efficiency of the cooled equipment.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application is described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A heat dissipation device, characterized in that: include: Condensation components; A compressor, wherein an output end of the compressor is connected to an input end of the condensing component through a first pipeline; an evaporator, wherein the output end of the evaporator is connected to the input end of the compressor through a second pipeline, the input end of the evaporator is connected to the output end of the condensing assembly through a third pipeline, and the evaporator is also connected to the output end of the compressor through a fourth pipeline; A first throttling device, the first throttling device is installed in the third pipeline; and A second throttling device, wherein the second throttling device is installed on the fourth pipeline.

2. The heat dissipation device according to claim 1, characterized in that: Two ends of the fourth pipeline are connected to the output end of the compressor and the input end of the evaporator respectively.

3. The heat dissipation device according to claim 1, characterized in that: Two ends of the fourth pipeline are respectively connected to the output end of the compressor and the output end of the evaporator.

4. The heat dissipation device according to claim 2, characterized in that: The heat dissipation device also includes a valve, which is installed on the fourth pipeline and is used to control the opening and closing of the fourth pipeline.

5. The heat dissipation device according to claim 4, characterized in that: The valve is configured as a third throttling device, the second throttling device and the third throttling device are connected in series to the fourth pipeline, and the internal leakage of the third throttling device is smaller than the internal leakage of the second throttling device.

6. The heat dissipation device according to claim 4, characterized in that: The valve comprises a solenoid valve or an electric valve.

7. The heat dissipation device according to claim 4, characterized in that: The second throttling device is provided in plurality, and the plurality of the second throttling devices are respectively configured as a plurality of capillaries. The valve is provided in plurality, and the plurality of the valves are respectively configured as a plurality of solenoid valves. One capillary tube and one solenoid valve are connected to form a control branch, and the plurality of control branches are connected in parallel between the output end of the compressor and the input end of the evaporator.

8. The heat dissipation device according to claim 4, characterized in that: The heat dissipation device also includes a controller, which is connected to the compressor, the first throttling device, the second throttling device and the valve, and is used to control the operation of the compressor, the first throttling device, the second throttling device and the valve.

9. The heat dissipation device according to claim 1, characterized in that: The heat dissipation device further comprises a frequency converter, which is connected to the compressor and is used to control the operating frequency of the compressor.

10. The heat dissipation device according to any one of claims 1 to 9, characterized in that: The condensing component includes a condenser and a condensing fan. The input end of the condenser is connected to the output end of the compressor through the first pipeline, and the output end of the condenser is connected to the input end of the evaporator through the third pipeline. The condensing fan is used to accelerate the flow speed of the air around the condenser.

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