Pluggable high-power power amplifier module with spray cooling system and method of operation thereof

Abstract

The application relates to a pluggable high-power power amplifier module with a spray cooling system and an operating method thereof, wherein the module comprises: a power amplifier module, which is inserted into a power amplifier plug-in box and is provided with a power amplifier module radio frequency output connector on the back end surface; the power amplifier plug-in box, the power amplifier module is inserted into the power amplifier plug-in box from the front side of the power amplifier plug-in box; a spray system, which comprises a spray cavity arranged above the power amplifier plug-in box and a gas-liquid separator, a compressor, a condenser, a liquid storage tank storing refrigerant, a filter and an electromagnetic valve connected in sequence through pipelines; a spray pipe system is arranged in the spray cavity; a cooling liquid outlet is arranged at the bottom of the spray cavity; the electromagnetic valve is connected with the inlet of the spray pipe system through a pipeline, and the gas-liquid separator is connected with the cooling liquid outlet through a pipeline; a power combiner is provided with a plurality of power combiner radio frequency input interfaces at the front end and a power combiner radio frequency output interface at the back end; and the power combiner radio frequency input interfaces are connected with the power amplifier module radio frequency output connector.

Description

Technical Field

[0001] This invention relates to the field of accelerator technology, specifically to a pluggable high-power amplifier module with a spray cooling system and its operating method. Background Technology

[0002] A power amplifier module is a device that amplifies a specific small input signal using a power amplifier module, and then cascades it through a specific power combiner to form a high-power output. In recent years, it has been increasingly widely used in the field of accelerators.

[0003] The development of high-power transistor technology has provided more possibilities for increasing the output power of single power amplifier modules, but this has also led to high heat dissipation. Conventional water-cooled plate heat dissipation systems are no longer sufficient to achieve the desired heat dissipation effect. For every 10°C increase in the temperature of electronic components, their lifespan is shortened by 50%. Therefore, finding an effective cooling method to ensure the normal operation of high-speed, high-power chips is urgently needed.

[0004] However, phase change spray cooling can achieve extremely high heat dissipation efficiency by utilizing the phase change of coolant droplets to absorb heat. The general implementation method is to directly atomize the coolant into small droplets and spray them onto the heat-generating chip or module. However, for power amplifier modules, on the one hand, there is a need for power combining, and on the other hand, a single power amplifier module has the need for online thermal maintenance, so the direct spraying method is no longer applicable. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to provide a pluggable high-power amplifier module with a spray cooling system and its operation method, which can effectively solve the problem of poor heat dissipation effect of existing cooling systems on high-power amplifier modules, while also allowing for online pluggable maintenance of individual amplifier modules.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The pluggable high-power amplifier module with a spray cooling system described in this invention includes:

[0008] A power amplifier module, wherein there are several power amplifier modules, each for plugging into a power amplifier enclosure; the rear end face of the power amplifier module is provided with a power amplifier module RF output connector;

[0009] The amplifier enclosure is a box structure with an open top, and the amplifier module is inserted into the amplifier enclosure from the front side;

[0010] The spray system includes a spray chamber located above the power amplifier socket and a gas-liquid separator, a compressor, a condenser, a refrigerant storage tank, a filter, and a solenoid valve connected sequentially by pipelines. A spray nozzle system is installed within the spray chamber. A coolant outlet is located at the bottom of the spray chamber. The solenoid valve is connected to the inlet of the spray nozzle system via a pipeline, and the gas-liquid separator is connected to the coolant outlet via a pipeline.

[0011] A power combiner is provided with a number of power combiner RF input interfaces at its front end and a power combiner RF output interface at its rear end; the power combiner RF input interfaces are connected to the RF output connector of the power amplifier module.

[0012] Preferably, the pluggable high-power amplifier module further includes a data acquisition system; the data acquisition system includes a temperature sensor, a data acquisition instrument, a computer, and a controller; the temperature sensor is disposed on the heating surface of the cooled device within the amplifier module and is used to detect the temperature of the heating surface of the cooled device; the data input port of the data acquisition instrument is electrically connected to the temperature sensor, and its data output port is electrically connected to the computer and the controller respectively, and the controller is electrically connected to the solenoid valve.

[0013] Preferably, in the pluggable high-power amplifier module, each amplifier module has a first guide structure at the bottom, clamping flanges on both sides of the top, and a power plug on the rear end face; the bottom of the amplifier box has several second guide structures that match the first guide structure, and several power sockets are provided on its rear side plate, and the power plug is plugged into the power socket.

[0014] Preferably, the pluggable high-power amplifier module further includes a first valve and a second valve in the spray system. The first valve is located on the pipeline between the coolant outlet and the gas-liquid separator; the second valve is located on the pipeline between the liquid storage tank and the filter.

[0015] Preferably, in the pluggable high-power amplifier module, the spray cavity includes a spray chamber, a heat-absorbing plate, and a pressing device; the heat-absorbing plate is disposed at the bottom of the spray chamber; the pressing device is disposed at the bottom of the heat-absorbing plate and is used to cooperate with the pressing flange so that the amplifier module can be pulled out and inserted into the amplifier socket.

[0016] Preferably, in the pluggable high-power amplifier module, the top surface of the heat-absorbing plate is provided with several conical protrusions of heat dissipation microstructures.

[0017] Preferably, in the pluggable high-power amplifier module, the clamping device includes an "L"-shaped support structure, a "T"-shaped support structure, and a locking strip. Two "L"-shaped support structures and several "T"-shaped support structures are respectively disposed at the bottom of the heat-absorbing plate and are connected to the clamping flange. The two "L"-shaped support structures are located near the two ends of the heat-absorbing plate, and the several "T"-shaped support structures are spaced apart between the two "L"-shaped support structures, so that an amplifier module can be accommodated between any one of the "L"-shaped support structures at both ends and the adjacent "T"-shaped support structure, and an amplifier module can be accommodated between any two adjacent "T"-shaped support structures in the middle. A locking strip is provided between the stepped surface of each "L"-shaped support structure or the stepped surface of each "T"-shaped support structure and the corresponding clamping flange. The locking strip is used to lock the clamping flange after the amplifier module is inserted into the amplifier enclosure.

[0018] Preferably, in the pluggable high-power amplifier module, the nozzle system includes a DC water distributor, a conical water distributor, and nozzles; the DC water distributor is fixedly installed in the spray chamber and is a tubular structure with one end open and the other end closed; the DC water distributor has several conical water distributors arranged along its length, and the conical water distributors are connected to the DC water distributor; several nozzles are arranged around the bottom circumference of the conical water distributor.

[0019] Preferably, in the pluggable high-power amplifier module, the first guiding structure is a guide bar, and the second guiding structure is a guide groove.

[0020] The operating method of the pluggable high-power amplifier module with a spray cooling system described in this invention includes the following steps:

[0021] Several power amplifier modules are inserted one by one from one side of the power amplifier box. During insertion, the first guide structure at the bottom of the power amplifier module is accommodated in the second guide structure at the bottom of the power amplifier box. The upper two sides of the power amplifier module are pressed and folded into the locking strip pressing surface of the spray system pressing device. The power amplifier module is slid to the rear of the power amplifier box. The RF output connector of the power amplifier module and the RF input interface of the power combiner are plugged into each other. The power plug of the power amplifier module is plugged into the power socket. The head of the locking strip is tightened with a locking wrench until the top of the power amplifier module is completely pressed against the heat-absorbing plate of the spray chamber.

[0022] When the compressor is started, the refrigerant is pressurized by the compressor and cooled by the condenser. Then, it is sprayed into the spray chamber through the solenoid valve and the nozzle system. The atomizing chamber absorbs the heat dissipation of the electronic components in the power amplifier module. At the same time, the temperature sensor detects the temperature of the heating surface of the electronic components in the power amplifier module, and the controller controls the opening of the solenoid valve to control the flow rate of the sprayed refrigerant and spray the electronic components in the power amplifier module to cool them down.

[0023] The refrigerant then flows from the outlet of the spray chamber to the coolant outlet and back to the gas-liquid separator to complete the refrigeration cycle.

[0024] The present invention has the following advantages due to the adoption of the above technical solutions:

[0025] (1) The present invention applies a spray cooling system to the power amplifier module system, which greatly improves the upper limit of radio frequency output and at the same time reduces the damage to electronic components caused by high heat dissipation.

[0026] (2) The present invention separates the spray cooling system from the power amplifier module. When multiple modules arranged in a row are hot-swapped relative to the plug box, there is no need to switch the spray chamber and water cooling system on and off, thus improving maintenance efficiency.

[0027] (3) Under the action of the double locking strip, the power amplifier module heating surface and the spray chamber heat absorption surface are pressed together, which improves the heat dissipation efficiency. At the same time, the power amplifier module flange and the space for the pressing device have a guiding and positioning function, which improves the accuracy of blind insertion of plugs and sockets.

[0028] (4) The nozzle system of the present invention adopts a combination of DC water distributor and cone water distributor to spray in multiple directions, so that the heat dissipation is more uniform. Attached Figure Description

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts. In the drawings:

[0030] Figure 1 This is a schematic diagram of the structure of the pluggable high-power amplifier module with a spray cooling system described in this invention.

[0031] Figure 2 This is a schematic diagram of the power amplifier module in this invention;

[0032] Figure 3 This is a schematic diagram of the power amplifier socket and power combiner in this invention;

[0033] Figure 4 This is a schematic diagram of the spray chamber in this invention;

[0034] Figure 5 yes Figure 4 A schematic diagram of the heat-absorbing plate in the diagram, showing the pressing device;

[0035] Figure 6 This is a schematic diagram of the nozzle system in this invention;

[0036] Figure 7 This is a schematic diagram showing the interaction between the spray chamber, the power amplifier box, and the power amplifier module in this invention;

[0037] Figure 8 This is a schematic diagram of the locking strip in this invention;

[0038] Figure 9 This is a schematic diagram of the heat-absorbing plate in this invention.

[0039] The markings in the attached diagram are as follows:

[0040] 1-First valve; 2-Power amplifier module; 3-Power amplifier socket; 4-Power combiner; 5-Spray chamber; 6-Gas-liquid separator; 7-Compressor; 8-Condenser; 9-Liquid storage tank; 10-Second valve; 11-Filter; 12-Solenoid valve; 13-Data acquisition instrument; 14-Computer; 15-Controller;

[0041] 21-First guiding structure; 22-Power plug; 23-Power amplifier module RF output connector; 24-Clamping flange;

[0042] 31-Second guide structure; 32-Power socket;

[0043] 41 - Power combiner RF input interface; 42 - Power combiner RF output interface;

[0044] 51- Nozzle system; 52- Spray chamber; 53- Clamping device;

[0045] 511-Direct current distributor; 512-Conical distributor; 513-Nozzle;

[0046] 521 - Heat-absorbing plate; 522 - Coolant outlet;

[0047] 5211 - Heat sink microstructure;

[0048] 531 - "L" shaped support structure; 532 - Locking strip; 533 - "T" shaped support structure;

[0049] 5321 - Locking strip head; 5322 - Locking strip mounting surface; 5323 - Locking strip pressing surface. Detailed Implementation

[0050] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the invention and to fully convey the scope of the invention to those skilled in the art.

[0051] This invention provides a pluggable high-power amplifier module with a spray cooling system. By combining the spray system with the amplifier module and amplifier enclosure, it can effectively solve the problem of poor heat dissipation of high-power amplifier modules by existing cooling systems, while also allowing for online pluggable maintenance of the individual amplifier module.

[0052] like Figure 1 As shown, the pluggable high-power amplifier module with a spray cooling system provided by the present invention includes:

[0053] A power amplifier module 2, there are several power amplifier modules 2, each used to be plugged into the power amplifier box 3; the rear end face of the power amplifier module 2 is provided with a power amplifier module RF output connector 23;

[0054] The power amplifier box 3 is a box structure with an open top. The power amplifier module 2 is inserted into the power amplifier box 3 from the front side.

[0055] The spray system includes a spray chamber 5 located above the power amplifier enclosure and a gas-liquid separator 6, a compressor 7, a condenser 8, a refrigerant storage tank 9, a filter 11, and a solenoid valve 12 connected in sequence by pipelines; a spray nozzle system 51 is provided inside the spray chamber 5; a coolant outlet 522 is provided at the bottom of the spray chamber 5; the solenoid valve 12 is connected to the inlet of the spray nozzle system 51 through a pipeline, and the gas-liquid separator 6 is connected to the coolant outlet 522 through a pipeline;

[0056] Power combiner 4 has several power combiner RF input interfaces 41 at its front end and a power combiner RF output interface 42 at its rear end; the power combiner RF input interfaces 41 are connected to the power amplifier module RF output connector 23 (see...). Figure 3 ).

[0057] In the above embodiments, preferably, the present invention further includes a data acquisition system; the data acquisition system includes a temperature sensor (not shown in the figure), a data acquisition instrument 13, a computer 14, and a controller 15; the temperature sensor is disposed on the heating surface of the cooled device (not shown in the figure) within the power amplifier module 2, and is used to detect the temperature of the heating surface of the cooled device; the data input port of the data acquisition instrument 13 is electrically connected to the temperature sensor, and its data output port is electrically connected to the computer 14 and the controller 15 respectively, and the controller 15 is electrically connected to the solenoid valve 12. Thus, the temperature data detected by the temperature sensor is transmitted to the computer 14 and the controller 15 through the data acquisition instrument 13, and the controller 15 controls the opening degree of the solenoid valve 12 to control the flow rate of the sprayed refrigerant.

[0058] In the above embodiments, preferably, as follows: Figure 2 and Figure 3 As shown, each power amplifier module 2 has a first guide structure 21 at the bottom, pressing flanges 24 on both sides of the top, and a power plug 22 on the rear end face; the power amplifier box 3 has several second guide structures 31 at the bottom that match the first guide structure 21, and several power sockets 32 on its rear side plate, and the power plug 22 is plugged into the power socket 32.

[0059] In the above embodiment, preferably, the spray system further includes a first valve 1 and a second valve 10. The first valve 1 is disposed on the pipeline between the coolant outlet 522 and the gas-liquid separator 6; the second valve 10 is disposed on the pipeline between the storage tank 9 and the filter 11. Thus, the opening and closing of the pipeline upstream of the gas-liquid separator 6 is controlled by the first valve 1, and the opening and closing of the pipeline between the storage tank 9 and the filter 11 is controlled by the second valve.

[0060] In the above embodiments, preferably, as follows: Figure 4 and Figure 5 As shown, the spray chamber 5 includes a spray chamber 52, a heat-absorbing plate 521, and a pressing device 53; the heat-absorbing plate 521 is located at the bottom of the spray chamber 52; the pressing device 53 is located at the bottom of the heat-absorbing plate 521 and is used to cooperate with the pressing flange 24 so that the power amplifier module 2 can be pulled out and inserted into the power amplifier box 3.

[0061] In the above embodiments, preferably, as follows: Figure 9 As shown, the top surface of the heat-absorbing plate 521 is provided with several conical protrusions of heat dissipation microstructures 5211. This can accelerate the heat dissipation effect.

[0062] In the above embodiments, preferably, as follows: Figure 7As shown, the clamping device 53 includes an "L"-shaped support structure 531, a "T"-shaped support structure 533, and a locking strip 532. Two "L"-shaped support structures 531 and several "T"-shaped support structures 533 are respectively disposed at the bottom of the heat-absorbing plate 521 and are connected to the clamping flange 24. The two "L"-shaped support structures 531 are located near both ends of the heat-absorbing plate 521, and the several "T"-shaped support structures 533 are spaced apart between the two "L"-shaped support structures 531. An amplifier module 2 is accommodated between any one of the "L"-shaped support structures 531 at both ends and the adjacent "T"-shaped support structure 533, and an amplifier module is accommodated between any two adjacent "T"-shaped support structures 533 in the middle; a locking strip 532 is provided between the stepped surface of each "L"-shaped support structure 531 or the stepped surface of each "T"-shaped support structure 533 and the corresponding pressing flange 24. The locking strip 532 is used to lock the pressing flange 24 after the amplifier module 2 is inserted into the amplifier box 3.

[0063] It should be noted that, as Figure 8 As shown, the locking strip 532 has a locking strip head 5321, a locking strip mounting surface 5322, and a locking strip pressing surface 5323. During installation, the locking strip mounting surface 5322 is fixedly set on the stepped surface of the "L"-shaped support structure 531 or the stepped surface of the "T"-shaped support structure 533, and is set along the length direction of the stepped surface. The locking strip head is tightened with a locking wrench. At this time, the locking strip pressing surface 5323 is pressed against the bottom of the heat absorption plate. At the same time, the top of the power amplifier module 2 is completely pressed against the heat absorption plate 521 of the spray chamber.

[0064] In addition, the locking strip 532 is a mature product that can be purchased directly on the market, and its internal structure and working principle will not be described in detail here.

[0065] In the above embodiments, preferably, as follows: Figure 6 As shown, the nozzle system 51 includes a DC water distributor 511, a conical water distributor 512, and nozzles 513. The DC water distributor 511 is fixedly installed in the spray chamber 52 and is a tubular structure with one end open and the other end closed. Several conical water distributors 512 are arranged along the length of the DC water distributor 511, and the conical water distributors 512 are connected to the DC water distributor 511. Several nozzles 513 are arranged around the bottom circumference of the conical water distributors 512. Thus, the nozzle system 51 can spray and cool the components installed in the power amplifier module 2.

[0066] In the above embodiments, preferably, the first guide structure 21 is a guide bar and the second guide structure 31 is a guide groove.

[0067] In addition, it should be noted that the refrigerant stored in the liquid storage tank 9 in this invention is a low-boiling-point working fluid, such as Freon 113, n-propanol and R134a.

[0068] The present invention also provides an operating method for a pluggable high-power amplifier module with a spray cooling system, characterized by comprising the following steps:

[0069] (1) Insert several power amplifier modules one by one from one side of the power amplifier box. When inserting, the first guide structure at the bottom of the power amplifier module is accommodated in the second guide structure at the bottom of the power amplifier box. The upper two sides of the power amplifier module are pressed and folded into the locking strip pressing surface of the spray system pressing device. Slide the power amplifier module to the rear of the power amplifier box. The RF output connector of the power amplifier module and the RF input interface of the power synthesizer are plugged into each other. The power plug of the power amplifier module is plugged into the power socket. Tighten the head of the locking strip with a locking wrench until the top of the power amplifier module is completely pressed against the heat absorption plate of the spray chamber.

[0070] (2) Start the compressor. After the refrigerant is pressurized by the compressor and cooled by the condenser, it is sprayed into the spray chamber through the solenoid valve and the nozzle system. The atomizing chamber absorbs the heat dissipation of the electronic components in the power amplifier module. At the same time, the temperature sensor detects the temperature of the heating surface of the electronic components in the power amplifier module. The controller controls the opening of the solenoid valve to control the flow rate of the sprayed refrigerant and sprays the electronic components in the power amplifier module to cool them down.

[0071] (3) The refrigerant then flows from the outlet of the spray chamber to the coolant outlet and back to the gas-liquid separator to complete the cyclic refrigeration.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pluggable high-power amplifier module with a spray cooling system, characterized in that, include: A power amplifier module, wherein there are several power amplifier modules, each for plugging into a power amplifier enclosure; the rear end face of the power amplifier module is provided with a power amplifier module RF output connector; The amplifier enclosure is a box structure with an open top, and the amplifier module is inserted into the amplifier enclosure from the front side; The spray system includes a spray chamber located above the power amplifier socket and a gas-liquid separator, a compressor, a condenser, a refrigerant storage tank, a filter, and a solenoid valve connected sequentially by pipelines. A spray nozzle system is installed within the spray chamber. A coolant outlet is located at the bottom of the spray chamber. The solenoid valve is connected to the inlet of the spray nozzle system via a pipeline, and the gas-liquid separator is connected to the coolant outlet via a pipeline. A power combiner, wherein the front end of the power combiner is provided with a plurality of power combiner RF input interfaces and the rear end is provided with a power combiner RF output interface; the power combiner RF input interfaces are connected to the RF output connector of the power amplifier module; Each power amplifier module has a first guide structure at the bottom, clamping flanges on both sides at the top, and a power plug on the rear end. The bottom of the power amplifier enclosure is provided with several second guide structures that match the first guide structure, and several power sockets are provided on its rear side panel, and the power plug is plugged into the power sockets. The spray chamber includes a spray chamber, a heat-absorbing plate, and a pressing device; The heat-absorbing plate is disposed at the bottom of the spray chamber; The clamping device is located at the bottom of the heat-absorbing plate and is used to cooperate with the clamping flange so that the power amplifier module can be pulled out and inserted into the power amplifier box. The clamping device includes an "L"-shaped support structure, a "T"-shaped support structure, and a locking strip; Two "L"-shaped support structures and several "T"-shaped support structures are respectively disposed at the bottom of the heat-absorbing plate and are connected with the pressing flange. The two "L"-shaped support structures are located near the two ends of the heat-absorbing plate, and the several "T"-shaped support structures are spaced apart between the two "L"-shaped support structures, so that a power amplifier module can be accommodated between any one of the "L"-shaped support structures at the two ends and the adjacent "T"-shaped support structure, and a power amplifier module can be accommodated between any two adjacent "T"-shaped support structures in the middle. A locking strip is provided between the stepped surface of each "L"-shaped support structure or the stepped surface of each "T"-shaped support structure and the corresponding clamping flange. The locking strip is used to lock the clamping flange after the power amplifier module is inserted into the power amplifier box. The nozzle system includes a direct current distributor, a conical distributor, and nozzles; The DC water distributor is fixedly installed in the spray chamber and is a tubular structure with one end open and the other end closed. The DC water distributor has several conical water distributors arranged along its length, and the conical water distributors are connected to the DC water distributor; Several nozzles are arranged around the bottom circumference of the conical water distributor.

2. The pluggable high-power amplifier module according to claim 1, characterized in that, It also includes a data acquisition system; the data acquisition system includes a temperature sensor, a data acquisition instrument, a computer, and a controller; The temperature sensor is disposed on the heat-generating surface of the cooled device within the power amplifier module; The data input port of the data acquisition instrument is electrically connected to the temperature sensor, and its data output port is electrically connected to the computer and the controller respectively. The controller is electrically connected to the solenoid valve.

3. The pluggable high-power amplifier module according to claim 1 or 2, characterized in that, The spray system further includes a first valve and a second valve. The first valve is located on the pipeline between the coolant outlet and the gas-liquid separator; the second valve is located on the pipeline between the storage tank and the filter.

4. The pluggable high-power amplifier module according to claim 1, characterized in that, The top surface of the heat-absorbing plate is provided with several conical protrusions of heat dissipation plate microstructures.

5. The pluggable high-power amplifier module according to claim 1, characterized in that, The first guiding structure is a guide bar, and the second guiding structure is a guide groove.

6. An operating method for a pluggable high-power amplifier module with a spray cooling system as described in any one of claims 3 to 5, characterized in that, Includes the following steps: Several power amplifier modules are inserted one by one from one side of the power amplifier box. During insertion, the first guide structure at the bottom of the power amplifier module is accommodated in the second guide structure at the bottom of the power amplifier box. The upper two sides of the power amplifier module are pressed and folded into the locking strip pressing surface of the spray system pressing device. The power amplifier module is slid to the rear of the power amplifier box. The RF output connector of the power amplifier module and the RF input interface of the power combiner are plugged into each other. The power plug of the power amplifier module is plugged into the power socket. The head of the locking strip is tightened with a locking wrench until the top of the power amplifier module is completely pressed against the heat-absorbing plate of the spray chamber. When the compressor is started, the refrigerant is pressurized by the compressor and cooled by the condenser. Then, it is sprayed into the spray chamber through the solenoid valve and the nozzle system. The atomizing chamber absorbs the heat dissipation of the electronic components in the power amplifier module. At the same time, the temperature sensor detects the temperature of the heating surface of the electronic components in the power amplifier module, and the controller controls the opening of the solenoid valve to control the flow rate of the sprayed refrigerant and spray the electronic components in the power amplifier module to cool them down. The refrigerant then flows from the outlet of the spray chamber to the coolant outlet and back to the gas-liquid separator to complete the refrigeration cycle.

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