A heat dissipation system for air conditioning power module
By designing an air conditioning power module heat dissipation system including a liquid storage tank, a water storage device, a refrigerant return pipe and a fan suspension assembly, the problem of poor heat dissipation effect in the prior art is solved, and efficient heat dissipation effect and extension of the module life is achieved.
Patent Information
- Application Number
- CN202411940948.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-04-01
AI Technical Summary
The existing air-conditioning power module has poor heat dissipation effect, while liquid cooling is only refrigerated through physical conduction, lacking effective refrigeration effect, resulting in the module being prone to failure due to heat generation and has a short life.
A heat dissipation system of an air conditioning power module is designed, including a compressor, a liquid storage tank, a water storage device, a refrigerant return pipeline, a first circulating water pipeline, a water pump and a control heat dissipation device. By installing a water storage device on the circumference of the liquid storage tank, the gas-liquid conversion characteristics of the refrigerant return pipe are used to quickly cool down, and a secondary cooling is achieved through an outdoor fan. Finally, the cold air is blown to the heated air conditioning power module through the fan suspension assembly.
It realizes efficient heat dissipation effect, effectively prevents power module from failing due to heating, extends the module's life, and reduces energy consumption.
Smart Images
Figure CN119743941A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of air conditioner heat dissipation, and in particular relates to a heat dissipation system of an air conditioner power module. Background Art
[0002] Intelligent power module (IPM) is a key component used in variable frequency air conditioner substrates. It is used for variable frequency control of compressors and fans. A large amount of heat will be generated during the operation of the intelligent power module. In order to ensure the performance of the intelligent power module, a heat sink needs to be set to dissipate the heat of the intelligent power module.
[0003] However, the existing air conditioning power module heat dissipation method usually adopts conventional air cooling or liquid cooling; among them, air cooling has a poor heat dissipation effect because the temperature of the module is relatively high and the temperature of the blown air is relatively high; and liquid cooling is only physical conduction cooling in the cycle refrigeration process, and does not have a good cooling effect.
[0004] Therefore, the present invention provides a heat dissipation system for an air-conditioning power module to solve the above technical problems. Summary of the invention
[0005] In view of the above problems, the present invention aims to provide a heat dissipation system for an air conditioner power module, which has good heat dissipation effect, can effectively prevent the power module from malfunctioning due to heating, and prolong the life of the module.
[0006] The present invention provides a heat dissipation system for an air-conditioning power module, which comprises a compressor, a liquid storage tank connected to the compressor, a water storage device arranged on a side of the liquid storage tank away from the compressor, a refrigerant return pipe arranged around the water storage device and connected to the liquid storage tank, a first circulating water pipe connected to the water storage device and arranged close to the outdoor fan, and a water pump connected to the first circulating water pipe and a control heat dissipation device; the control heat dissipation device comprises a heat dissipation device and a control mainboard for controlling the operation of the heat dissipation device, the compressor and the water pump; the heat dissipation device comprises a heat dissipation suspension cold plate, a heat dissipation suspension bottom plate fixedly connected to the heat dissipation suspension cold plate, and a heat dissipation control device. A heat sink is arranged on the heat dissipation suspension base plate, close to the heat dissipation suspension cold plate side and directly opposite to the air-conditioning power module, a fan suspension frame assembly is arranged on the heat dissipation suspension cold plate, close to the heat dissipation suspension base plate side and directly opposite to the heat sink, and a second circulating water pipe is arranged on the heat dissipation suspension base plate and connected to the first circulating water pipe; a detection end connected to the temperature detection pin of the air-conditioning power module is provided on the control main board, which is used to detect the temperature of the air-conditioning power module, and the control main board is electrically connected to the fan suspension frame assembly, which is used to control the start and stop of the fan suspension frame assembly and / or adjust the speed of the fan suspension frame assembly according to the temperature value of the air-conditioning power module.
[0007] Preferably, the fan suspension frame assembly includes a fan suspension frame fixed to the heat dissipation suspension cold plate, a heat dissipation circulation duct arranged on the top of the fan suspension frame, a variable frequency fan fixed to the fan suspension frame and arranged directly opposite the heat sink, and an air outlet grille arranged on the side of the variable frequency fan away from the heat dissipation circulation duct, the variable frequency fan is electrically connected to the control main board, and the control main board is used to control the start and stop of the variable frequency fan and / or adjust the speed of the variable frequency fan according to the temperature value of the air-conditioning power module.
[0008] Preferably, the variable frequency fan includes a first variable frequency fan fixed to the fan suspension frame and a second variable frequency fan fixed to the fan suspension frame and spaced apart from the first variable frequency fan, and both the first variable frequency fan and the second variable frequency fan are electrically connected to the control mainboard.
[0009] Preferably, the fan openings of the first variable frequency fan and the second variable frequency fan are vertical air ducts.
[0010] Preferably, a first water inlet pipe and a second water inlet pipe are provided at the connecting point of the first circulating water pipe and the second circulating water pipe.
[0011] Preferably, the heat dissipation suspension cold plate is fixedly connected to the heat dissipation suspension bottom plate by screws; and the fan suspension frame is fixedly connected to the heat dissipation suspension cold plate by screws.
[0012] Compared with the related art, the present invention provides a heat dissipation system for an air-conditioning power module, comprising a compressor, a liquid storage tank, a water storage device, a refrigerant return pipe, a first circulating water pipe, a water pump and a control heat dissipation device; the control heat dissipation device comprises a heat dissipation device and a control mainboard for controlling the operation of the heat dissipation device, the compressor and the water pump, the heat dissipation device comprises a heat dissipation suspension cold plate, a heat dissipation suspension bottom plate, a heat sink, a fan suspension frame assembly and a second circulating water pipe arranged on the heat dissipation suspension bottom plate and connected to the first circulating water pipe; the control mainboard is provided with a detection end connected to the temperature detection pin of the air-conditioning power module, which is used to detect the temperature of the air-conditioning power module, and the control mainboard is electrically connected to the fan suspension frame assembly, which is used to control the start and stop of the fan suspension frame assembly and / or adjust the speed of the fan suspension frame assembly according to the temperature value of the air-conditioning power module. In the above structure, by installing a water storage device around the liquid storage tank, the liquid storage tank with a lower temperature can cool the water storage device through heat conduction; by winding a circle of refrigerant return pipe around the water storage device, the gas-liquid conversion characteristics of the refrigerant in the reflux process are effectively utilized to achieve rapid cooling of the circulating water, and the first circulating water pipe is close to the outdoor fan, and secondary cooling is achieved through the outdoor fan; in addition, a second circulating water pipe is provided on the bottom plate of the heat dissipation suspension, so that after the temperature of the heat dissipation suspension bottom plate is lowered, the cold air of the heat dissipation suspension bottom plate is sucked in through the fan suspension assembly and blown to the air-conditioning power module to be cooled, thereby achieving efficient cooling. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a structural schematic diagram of a heat dissipation system of an air-conditioning power module of the present invention;
[0014] Figure 2 is a schematic structural diagram of the control heat dissipation device in the present invention;
[0015] Figure 3 It is a structural schematic diagram of the heat dissipation suspension base plate in the present invention;
[0016] Figure 4 is a structural schematic diagram of the fan suspension assembly in the present invention;
[0017] Figure 5 The figure is a flow chart of the control mainboard in the present invention controlling the operation of the variable frequency fan. DETAILED DESCRIPTION
[0018] The present invention provides a heat dissipation system for an air-conditioning power module, aiming to solve the problem of poor heat dissipation effect of the existing heat dissipation method for the air-conditioning power module.
[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in 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 creative work are within the scope of protection of the present invention.
[0020] Please see attached Figure 1-5 As shown, the present invention provides a heat dissipation system for an air-conditioning power module, comprising a compressor 1, a liquid storage tank 2 connected to the compressor 1, a water storage device 3 arranged on a side of the liquid storage tank 2 away from the compressor 1, a refrigerant return pipe 4 arranged around the water storage device 3 and connected to the liquid storage tank 2, a first circulating water pipe 6 connected to the water storage device 3 and arranged close to the outdoor fan 5, and a water pump 7 connected to the first circulating water pipe 6 and a control heat dissipation device 8; the control heat dissipation device 8 comprises a heat dissipation device 81 and a control mainboard 82 for controlling the operation of the heat dissipation device 81, the compressor 1 and the water pump 7, the heat dissipation device 81 comprises a heat dissipation suspension cold plate 811, a heat dissipation suspension bottom plate 812 fixedly connected to the heat dissipation suspension cold plate 811, and a heat dissipation device 811 arranged A heat sink 813 is arranged on the heat dissipation suspension base plate 812 near the heat dissipation suspension cold plate 811 and directly opposite the air-conditioning power module, a fan suspension frame assembly 814 is arranged on the heat dissipation suspension cold plate 811 near the heat dissipation suspension base plate 812 and directly opposite the heat sink 813, and a second circulating water pipe 815 is arranged on the heat dissipation suspension base plate 812 and connected to the first circulating water pipe 6; the control main board 82 is provided with a detection end connected to the temperature detection pin of the air-conditioning power module, which is used to detect the temperature of the air-conditioning power module, and the control main board 82 is electrically connected to the fan suspension frame assembly 814, and is used to control the start and stop of the fan suspension frame assembly 814 and / or adjust the speed of the fan suspension frame assembly 814 according to the temperature value of the air-conditioning power module.
[0021] In the above structure, by installing a water storage device 3 on the side of the liquid storage tank 2, the liquid storage tank 2 with a lower temperature can cool the water storage device 3 through heat conduction; by winding a circle of refrigerant return pipe 4 around the water storage device 3, the gas-liquid conversion characteristics of the refrigerant in the reflux process are effectively utilized to achieve rapid cooling of the circulating water, and the first circulating water pipe 6 is close to the outdoor fan 5, and secondary cooling is achieved through the outdoor fan 5; in addition, a second circulating water pipe 815 is provided on the heat dissipation suspension base plate 812, so that after the temperature of the heat dissipation suspension base plate 812 is reduced, the cold air of the heat dissipation suspension base plate 812 is sucked in through the fan suspension assembly 814 and blown to the air-conditioning power module to be cooled, thereby achieving efficient cooling.
[0022] Specifically, the fan suspension frame assembly 814 includes a fan suspension frame 101 fixed to the heat dissipation suspension cold plate 811, a heat dissipation circulation duct 102 arranged on the top of the fan suspension frame 101, a variable frequency fan 103 fixed to the fan suspension frame 101 and arranged opposite to the heat sink 813, and an air outlet grille 104 arranged on the side of the variable frequency fan 103 away from the heat dissipation circulation duct 102, the variable frequency fan 103 is electrically connected to the control main board 82, and the control main board 82 is used to control the start and stop of the variable frequency fan 103 and / or adjust the speed of the variable frequency fan 103 according to the temperature value of the air-conditioning power module.
[0023] It should be noted that the control method of the variable frequency fan 103 is variable frequency control, and the PWM (pulse width modulation) control technology is adopted by the frequency converter to realize the control of the output voltage and frequency. The air-conditioning power module is generally provided with a temperature detection pin. When the detection end of the control main board detects that the temperature of the air-conditioning power module reaches 70 degrees, the control main board 82 controls the variable frequency fan 103 to start and run at a low speed for heat dissipation. When the temperature of the air-conditioning power module rises to 75 degrees, the control main board 82 starts to supply power to the water pump 7, and the water circulation starts to work, speeding up the speed of the variable frequency fan 103, and the variable frequency fan 103 runs at a medium speed. When the temperature of the air-conditioning power module exceeds 80 degrees, the variable frequency fan 103 runs at a high speed to cool the air-conditioning power module. The speed of the variable frequency fan 103 and the operation of the water pump 7 are controlled by detecting the temperature of the air-conditioning power module, thereby realizing intelligent control, further improving the heat dissipation effect and reliability, and reducing energy consumption.
[0024] In this embodiment, the variable frequency fan 103 includes a first variable frequency fan 1031 fixed to the fan suspension frame and a second variable frequency fan 1032 fixed to the fan suspension frame 101 and spaced apart from the first variable frequency fan 1031. The first variable frequency fan 1031 and the second variable frequency fan 1032 are both electrically connected to the control mainboard 82. In this structure, the first variable frequency fan 1031 and the second variable frequency fan 1032 are spaced apart, which can effectively prevent the wind speeds from affecting each other and causing wind speed attenuation; at the same time, the fan ports of the first variable frequency fan 1031 and the second variable frequency fan 1032 adopt vertical air ducts and face the heat sink 813 and the air conditioning power module, which can achieve high-efficiency cooling. In addition, the models of the first variable frequency fan 1031 and the second variable frequency fan 1032 are selected and installed according to the size of the heat sink 813.
[0025] Furthermore, the first water inlet pipe 9 and the second water inlet pipe 10 are provided at the connection point between the first circulating water pipe 6 and the second circulating water pipe 815. This structural setting greatly facilitates the installation efficiency of the connection between the first circulating water pipe 6 and the second circulating water pipe 815.
[0026] It is worth mentioning that, in order to facilitate installation and disassembly, the heat dissipation suspension cold plate 811 is fixedly connected to the heat dissipation suspension bottom plate 812 by screws; the fan suspension frame 101 is fixedly connected to the heat dissipation suspension cold plate 811 by screws.
[0027] Compared with the related art, the present invention provides a heat dissipation system for an air-conditioning power module, comprising a compressor, a liquid storage tank, a water storage device, a refrigerant return pipe, a first circulating water pipe, a water pump and a control heat dissipation device; the control heat dissipation device comprises a heat dissipation device and a control mainboard for controlling the operation of the heat dissipation device, the compressor and the water pump, the heat dissipation device comprises a heat dissipation suspension cold plate, a heat dissipation suspension bottom plate, a heat sink, a fan suspension frame assembly and a second circulating water pipe arranged on the heat dissipation suspension bottom plate and connected to the first circulating water pipe; the control mainboard is provided with a detection end connected to the temperature detection pin of the air-conditioning power module, which is used to detect the temperature of the air-conditioning power module, and the control mainboard is electrically connected to the fan suspension frame assembly, which is used to control the start and stop of the fan suspension frame assembly and / or adjust the speed of the fan suspension frame assembly according to the temperature value of the air-conditioning power module. In the above structure, by installing a water storage device around the liquid storage tank, the liquid storage tank with a lower temperature can cool the water storage device through heat conduction; by winding a circle of refrigerant return pipe around the water storage device, the gas-liquid conversion characteristics of the refrigerant in the reflux process are effectively utilized to achieve rapid cooling of the circulating water, and the first circulating water pipe is close to the outdoor fan, and secondary cooling is achieved through the outdoor fan; in addition, a second circulating water pipe is provided on the bottom plate of the heat dissipation suspension, so that after the temperature of the heat dissipation suspension bottom plate is lowered, the cold air of the heat dissipation suspension bottom plate is sucked in through the fan suspension assembly and blown to the air-conditioning power module to be cooled, thereby achieving efficient cooling.
[0028] The above-described embodiments should be understood as illustrative rather than limiting the scope of protection of the present invention, which is subject to the claims. For those skilled in the art, some non-essential improvements and adjustments made to the present invention still fall within the scope of protection of the present invention without departing from the essence and scope of the present invention.
Claims
1. A heat dissipation system for an air conditioning power module, characterized in that: The heat dissipation system includes a compressor, a liquid storage tank connected to the compressor, a water storage device arranged on a side of the liquid storage tank away from the compressor, a refrigerant return pipe arranged around the water storage device and connected to the liquid storage tank, a first circulating water pipe connected to the water storage device and arranged close to the outdoor fan, and a water pump connected to the first circulating water pipe and a control heat dissipation device; the control heat dissipation device includes a heat dissipation device and a control mainboard for controlling the operation of the heat dissipation device, the compressor and the water pump, and the heat dissipation device includes a heat dissipation suspension cold plate, a heat dissipation suspension bottom plate fixedly connected to the heat dissipation suspension cold plate, and a heat dissipation suspension bottom plate arranged on the heat dissipation suspension A heat sink is arranged on the bottom plate of the frame close to one side of the heat dissipation suspension cold plate and directly opposite to the air-conditioning power module, a fan suspension frame assembly is arranged on the heat dissipation suspension cold plate close to one side of the heat dissipation suspension bottom plate and directly opposite to the heat sink, and a second circulating water pipe is arranged on the heat dissipation suspension bottom plate and connected to the first circulating water pipe; a detection end connected to the temperature detection pin of the air-conditioning power module is provided on the control main board, which is used to detect the temperature of the air-conditioning power module, and the control main board is electrically connected to the fan suspension frame assembly, and is used to control the start and stop of the fan suspension frame assembly and / or adjust the speed of the fan suspension frame assembly according to the temperature value of the air-conditioning power module.
2. The heat dissipation system of an air conditioning power module according to claim 1, characterized in that: The fan suspension frame assembly includes a fan suspension frame fixed to the heat dissipation suspension cold plate, a heat dissipation circulation duct arranged on the top of the fan suspension frame, a variable frequency fan fixed to the fan suspension frame and arranged opposite to the heat sink, and an air outlet grille arranged on a side of the variable frequency fan away from the heat dissipation circulation duct, the variable frequency fan is electrically connected to the control main board, and the control main board is used to control the start and stop of the variable frequency fan and / or adjust the speed of the variable frequency fan according to the temperature value of the air-conditioning power module.
3. The heat dissipation system of an air conditioning power module according to claim 2, characterized in that: The variable frequency fan comprises a first variable frequency fan fixed to the fan suspension frame and a second variable frequency fan fixed to the fan suspension frame and spaced apart from the first variable frequency fan. Both the first variable frequency fan and the second variable frequency fan are electrically connected to the control mainboard.
4. The heat dissipation system of an air conditioning power module according to claim 3, characterized in that: The fan openings of the first variable frequency fan and the second variable frequency fan are vertical air ducts.
5. The heat dissipation system of an air conditioning power module according to claim 1, characterized in that: A first water inlet pipe and a second water inlet pipe are provided at the connecting point of the first circulating water pipe and the second circulating water pipe.
6. The heat dissipation system of an air conditioning power module according to claim 1, characterized in that: The heat dissipation suspension cold plate is fixedly connected to the heat dissipation suspension bottom plate by screws; and the fan suspension frame is fixedly connected to the heat dissipation suspension cold plate by screws.