Heat dissipation structure of air source heat pump

Abstract

The utility model relates to the technical field of air source heat pumps, in particular to a heat dissipation structure of an air source heat pump, which comprises a case, a fan assembly and an electric control assembly, the electric control assembly comprises a frequency conversion plate and an electric reactor, the case comprises a fan cavity and an electric control cavity, the fan assembly and the electric reactor are both arranged in the fan cavity, and the frequency conversion plate is arranged in the electric control cavity. The frequency conversion plate is arranged in the electric control cavity, the frequency conversion plate is provided with heat dissipation fins, the heat dissipation fins are fixedly connected with the frequency conversion plate, and the heat dissipation fins are arranged at the junction of the electric control cavity and the fan cavity and located beside the fan assembly. According to the utility model, the radiating fins and the high-heat-yield electric reactor are arranged in the fan cavity, so that the radiating effect of the frequency conversion plate and the electric reactor can be improved, the electric control assembly can still be maintained in a proper working temperature interval under the working condition of long time or high heat, and the application range and the service life of equipment can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air source heat pumps, and more specifically, to a heat dissipation structure of an air source heat pump. Background Art

[0002] With the intensification of global warming, the popularity of air source heat pumps is increasing day by day. The hot outdoor environment also poses new challenges to the main unit of the air source heat pump: in an environment with a high ambient temperature, when the variable frequency air source heat pump chiller is in the refrigeration mode, the frequency converter using the air-cooled heat dissipation module cannot be effectively cooled, resulting in too high a temperature of the frequency converter (heating components such as IPM modules and resistors) which is the brain of the unit, leading to overheating shutdown of the unit.

[0003] The Chinese patent discloses an outdoor unit, including: an outdoor housing having an air inlet and an air outlet; a heat exchanger located between the air inlet and the air outlet, and a receiving space is defined between the heat exchanger and the side of the outdoor housing adjacent to the air outlet; a partition plate provided in the receiving space to divide the receiving space into a compressor chamber and a fan chamber; an electric control device including an electric control box, a circuit board, a heating element and a radiator, the electric control box is fixed on the partition plate, the heating element is provided on the circuit board and the circuit board is provided in the electric control box, the radiator is in contact with the heating element and the heat dissipation fins of the radiator sequentially pass through the side wall of the electric control box and the partition plate and extend into the fan chamber; a flow guiding member located in the fan chamber and adapted to guide the air flow to the heat dissipation fins. However, the electric control component of the air source heat pump further includes a reactor, and its temperature can even rise to more than 100°C during operation. If it is uniformly arranged in the electric control box, it will interact with the circuit board, greatly reducing the heat dissipation efficiency and causing heat accumulation to cause shutdown. Therefore, a heat dissipation structure of an air source heat pump that can further improve the heat dissipation efficiency is needed. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiency of poor heat dissipation of the electric control component in the prior art, and provide a heat dissipation structure of an air source heat pump, which can further improve the heat dissipation efficiency.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is:

[0006] Provide a heat dissipation structure of an air source heat pump, including a chassis, a fan assembly and an electric control component. The electric control component includes a variable frequency board and a reactor. The chassis includes a fan chamber and an electric control chamber. The fan assembly and the reactor are both arranged in the fan chamber. The variable frequency board is arranged in the electric control chamber. The variable frequency board is provided with heat dissipation fins. The heat dissipation fins are fixedly connected to the variable frequency board. The heat dissipation fins are arranged at the junction of the electric control chamber and the fan chamber and beside the fan assembly.

[0007] With this setting method, when the air source heat pump heat dissipation structure is working, a large amount of heat will be generated by the frequency conversion board and the reactor. The fan assembly rotates to form gas flow, and the gas flows through the surface of the heat dissipation fins and the reactor, taking away the heat generated by the operation of the heat dissipation fins and the reactor, ensuring that both the heat dissipation fins and the reactor can be maintained within an appropriate working temperature range and avoiding shutdown caused by overheating.

[0008] Preferably, the fan assembly includes at least two fan blades, the reactor is fixedly installed in the fan cavity, and the reactor is located between the two fan blades.

[0009] With this setting method, eddy currents will be generated on the periphery when the fan blades are working. It is found through simulation experiments that the intersection point of the eddy currents is between the two fan blades, where the gas flow velocity is relatively high and the heat generated by the reactor during operation is relatively high. Placing the reactor here can quickly take away the heat through the high-speed air flow, improve the heat dissipation efficiency, ensure that the reactor maintains a suitable working temperature, and is beneficial to improving the service life of the equipment.

[0010] Preferably, a first air inlet for air intake is provided on the side of the reactor, and an air outlet for air outlet is provided at the bottom of the reactor.

[0011] With this setting method, the air flow is driven by the eddy current and enters the reactor through the first air inlet. The air flow after heat exchange flows out through the air outlet at the bottom of the reactor, and the outflowing air flow is sent away by the fan blades along with the eddy current, which is beneficial to improving the heat dissipation efficiency of the reactor.

[0012] Preferably, a flow guide cover is further provided outside the fan blade, and the projection of the flow guide cover on the heat dissipation fins or the reactor in the horizontal or vertical direction does not overlap.

[0013] With this setting method, the gas is driven by the fan blade and enters the blade area of the fan blade from one side of the fan blade in the form of eddy current flow, and then flows out from the other side of the fan blade. By setting a flow guide cover outside the fan blade, it can ensure that the flow direction of the air flow is more concentrated, avoid the air flow from escaping around in the blade area and causing turbulent flow, which is beneficial to improving the concentration of the gas flow, and then increasing the gas flow velocity. The heat dissipation fins and the reactor do not overlap with the flow guide cover, which can ensure that both the heat dissipation fins and the reactor are located within the range of high-speed air flow, which is beneficial to improving the heat dissipation effect of the equipment.

[0014] Preferably, a flow guide plate is further provided on the heat dissipation fins, and the flow guide plate is fixedly installed on the side of the heat dissipation fins close to the fan blade.

[0015] With this setting method, the flow guide plate is beneficial to guiding more air flow through the surface of the heat dissipation fins, thereby improving the heat exchange efficiency of the heat dissipation fins and being beneficial to the heat dissipation of the frequency conversion board.

[0016] Preferably, one end of the deflector is in contact with the heat dissipation fins, and the other end is inclined towards the direction of the fan.

[0017] With this setting, the inclined end of the deflector towards the fan can guide more airflows to the heat dissipation fins and enter the heat dissipation fins from the end where the deflector is in contact with the heat dissipation fins, thereby increasing the air volume passing through the heat dissipation fins and improving the heat dissipation effect of the heat dissipation fins.

[0018] Preferably, the end of the heat dissipation fins for air outlet protrudes from the deflector.

[0019] With this setting, it can not only ensure the air guiding function of the deflector but also not affect the air outlet effect at the tail of the heat dissipation fins.

[0020] Preferably, the side wall of the fan cavity is provided with a first air inlet plate and an exhaust plate. The first air inlet plate is parallel to the rotation axis of the fan, the exhaust plate is perpendicular to the rotation axis of the fan, and the exhaust plate is located beside the end of the fan for air outlet.

[0021] With this setting, when the fan assembly works, the eddy current generated by the fan drives the outside air to enter the chassis from the first air inlet plate. After heat exchange in the chassis, it is discharged from the exhaust plate, making the flow direction of the air conform to the rotation of the fan, which is beneficial to reducing the power consumption of the fan assembly.

[0022] Preferably, the side wall of the fan cavity is further provided with a heat exchange plate, and the heat exchange plate is parallel and opposite to the exhaust plate.

[0023] The heat exchange plate is used for heat exchange of the compressor in the air source heat pump heat dissipation structure. With this setting, it is beneficial to increase the contact area between the surface of the heat exchange plate and the eddy current generated by the fan, and further improve the heat exchange efficiency of the compressor.

[0024] Preferably, the side wall of the electronic control cavity is provided with a second air inlet for air intake, and the bottom of the electronic control cavity is provided with a first communication hole for communicating with the fan cavity.

[0025] With this setting, when the fan assembly works, due to the large air velocity inside the fan cavity, a negative pressure is formed. And because the bottom of the electronic control cavity is connected to the fan cavity, under the action of the negative pressure, the outside air flows into the electronic control cavity through the second air inlet and then flows into the fan cavity from the first communication hole at the bottom of the electronic control cavity, thereby improving the gas fluidity in the electronic control cavity and being beneficial to further improving the heat exchange performance.

[0026] Preferably, the chassis further includes a compression cavity. The compression cavity is located at the bottom of the electronic control cavity and beside the fan cavity. The compression cavity is separated from the fan cavity by a middle plate, and the middle plate is provided with a second communication hole.

[0027] With this setting method, the compressor can be installed in the compression cavity. The bottom of the electronic control cavity is connected to the compression cavity, and the side of the compression cavity is connected to the fan cavity, forming an air flow channel of the second air inlet, the electronic control cavity, the first communication hole, the compression cavity, and the second communication hole.

[0028] Furthermore, the reactor is fixedly installed on the middle plate, and the second communication hole is arranged beside the reactor.

[0029] With this setting method, the air flow in the compression cavity enters the fan cavity through the second communication hole. It can not only enhance the heat dissipation effect of the reactor by passing through the surface of the reactor, but also quickly converge at the eddy current intersection, avoiding the formation of turbulent flow and increasing the power loss of the fan.

[0030] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0031] (1) Installing the heat dissipation fins and the high heat - generating reactor in the fan cavity is beneficial to improving the heat dissipation effect of the frequency conversion board and the reactor, enabling the electronic control components to still maintain within a suitable working temperature range under long - term or high - heat working conditions, which is beneficial to improving the applicable range and service life of the equipment.

[0032] (2) Through the setting of the flow - guiding plate, the gas passing volume of the heat dissipation fins is increased, which is beneficial to improving the heat dissipation performance of the heat dissipation fins.

[0033] (3) Through the setting of the flow - guiding cover, the movement route of the eddy current generated by the fan is restricted, the concentration of the air flow movement is improved, the generation of turbulent flow is avoided, which is beneficial to improving the heat dissipation efficiency and reducing power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of a heat dissipation structure of an air - source heat pump of the present utility model;

[0035] Figure 2 It is a schematic diagram of the flow - guiding cover structure of a heat dissipation structure of an air - source heat pump of the present utility model;

[0036] Figure 3 It is a schematic diagram of the installation of the electronic control components of a heat dissipation structure of an air - source heat pump of the present utility model;

[0037] Figure 4 It is a schematic diagram of the internal structure of a heat dissipation structure of an air - source heat pump of the present utility model;

[0038] Figure 5 It is a schematic diagram of the reactor structure of a heat dissipation structure of an air - source heat pump of the present utility model;

[0039] Figure 6 It is a schematic diagram of the electronic control cavity structure of a heat dissipation structure of an air - source heat pump of the present utility model.

[0040] The illustration markings are explained as follows:

[0041] 1. Chassis; 11. Fan chamber; 111. First air inlet plate; 112. Exhaust plate; 113. Heat exchange plate; 12. Electric control chamber; 121. Second air inlet; 122. First communication hole; 2. Fan assembly; 21. Fan; 22. Air guide cover; 3. Electric control assembly; 31. Frequency conversion board; 32. Reactor; 321. First air inlet; 322. Air outlet; 33. Heat dissipation fins; 331. Deflector; 4. Compression chamber; 5. Middle plate; 51. Second communication hole. Specific embodiments

[0042] The present utility model will be further described below in conjunction with specific embodiments. Among them, the drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation of this patent; in order to better illustrate the embodiments of the present utility model, some components in the drawings will be omitted, enlarged or reduced, which do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0043] In the drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0044] Embodiment 1

[0045] As Figures 1 to 6 shown in the first embodiment of a heat dissipation structure of an air source heat pump of the present utility model, it includes a chassis 1, a fan assembly 2 and an electric control assembly 3. The electric control assembly 3 includes a frequency conversion board 31 and a reactor 32. The chassis 1 includes a fan chamber 11 and an electric control chamber 12. The fan assembly 2 and the reactor 32 are both installed in the fan chamber 11, and the frequency conversion board 31 is installed in the electric control chamber 12. The frequency conversion board 31 is provided with heat dissipation fins 33, and the heat dissipation fins 33 are fixedly connected to the frequency conversion board 31. The heat dissipation fins 33 are arranged at the junction of the electric control chamber 12 and the fan chamber 11 and beside the fan assembly 2.

[0046] With this setting method, when the air source heat pump heat dissipation structure is working, the frequency conversion board 31 and the reactor 32 will generate a large amount of heat. The fan assembly 2 rotates to form gas flow. The gas flows through the surfaces of the heat dissipation fins 33 and the reactor 32, taking away the heat generated by the operation of the heat dissipation fins 33 and the reactor 32, ensuring that both the heat dissipation fins 33 and the reactor 32 can be maintained within a suitable working temperature range and avoiding shutdown caused by overheating.

[0047] As an embodiment of the present utility model, the fan assembly 2 includes at least two fan blades 21. The reactor 32 is fixedly installed in the fan cavity 11, and the reactor 32 is located between the two fan blades 21.

[0048] With this setting method, eddy currents will be generated on the periphery when the fan blades 21 are working. Through simulation experiments, it is found that the intersection of the eddy currents is between the two fan blades 21, where the gas flow velocity is relatively high. The reactor 32 generates a relatively high amount of heat during operation. By setting the reactor 32 here, the heat can be quickly taken away by the high-speed air flow, improving the heat dissipation efficiency, ensuring that the reactor 32 maintains a suitable working temperature, and being beneficial to improving the service life of the equipment.

[0049] As an embodiment of the present utility model, a first air inlet 321 for air intake is provided on the side of the reactor 32, and an air outlet 322 for air outlet is provided at the bottom of the reactor 32.

[0050] With this setting method, the air flow is driven by the eddy current and enters the interior of the reactor 32 along the first air inlet 321. The air flow after heat exchange then flows out through the air outlet 322 at the bottom of the reactor 32. The outflowing air flow is sent away by the fan blades 21 along with the eddy current, which is beneficial to improving the heat dissipation efficiency of the reactor 32.

[0051] As an embodiment of the present utility model, a flow guide cover 22 is further provided outside the fan blade 21, and the projection of the flow guide cover 22 on the heat dissipation fins 33 or the reactor 32 in the horizontal or vertical direction does not overlap.

[0052] With this setting method, the gas is driven by the fan blade 21 and enters the blade area of the fan blade 21 from one side of the fan blade 21 in the form of eddy current flow and then flows out from the other side of the fan blade 21. By providing the flow guide cover 22 outside the fan blade 21, it can ensure that the flow direction of the air flow is more concentrated, avoiding the air flow from escaping to the surroundings in the blade area and causing turbulent flow, being beneficial to improving the concentration of the gas flow, and further increasing the gas flow velocity. The heat dissipation fins 33 and the reactor 32 do not overlap with the flow guide cover 22, which can ensure that both the heat dissipation fins 33 and the reactor 32 are located within the range of high-speed air flow, being beneficial to improving the heat dissipation effect of the equipment.

[0053] As an embodiment of the present utility model, the heat dissipation fin 33 is further provided with a flow guiding plate 331, and the flow guiding plate 331 is fixedly arranged on the side of the heat dissipation fin 33 close to the fan 21.

[0054] Through this setting method, the flow guiding plate 331 is beneficial to guiding more air flow to flow through the surface of the heat dissipation fin 33, thereby improving the heat exchange efficiency of the heat dissipation fin 33 and being beneficial to the heat dissipation of the frequency conversion board 31.

[0055] As an embodiment of the present utility model, one end of the flow guiding plate 331 abuts against the heat dissipation fin 33, and the other end is inclined towards the direction of the fan 21.

[0056] Through this setting method, the inclined end of the flow guiding plate 331 towards the fan 21 can guide more air flow to the heat dissipation fin 33 and enter the heat dissipation fin 33 from the end where the flow guiding plate 331 abuts against the heat dissipation fin 33, thereby increasing the air flow rate passing through the heat dissipation fin 33 and improving the heat dissipation effect of the heat dissipation fin 33.

[0057] As an embodiment of the present utility model, the end of the heat dissipation fin 33 for air outlet protrudes from the flow guiding plate 331.

[0058] Through this setting method, it can not only ensure the air guiding effect of the flow guiding plate 331 but also not affect the air outlet effect at the tail of the heat dissipation fin 33.

[0059] Embodiment 2

[0060] The following is the second embodiment of a heat dissipation structure of an air source heat pump of the present utility model. This embodiment is similar to Embodiment 1, and the difference lies in that

[0061] As an embodiment of the present utility model, the side wall of the fan cavity 11 is provided with a first air inlet plate 111 and an exhaust plate 112, and the first air inlet plate 111 is parallel to the rotation axis of the fan 21, the exhaust plate 112 is perpendicular to the rotation axis of the fan 21, and the exhaust plate 112 is located beside the air outlet end of the fan 21.

[0062] Through this setting method, when the fan assembly 2 works, the eddy current generated by the fan 21 drives the external air flow to enter the chassis 1 from the first air inlet plate 111, and after heat exchange in the chassis 1, it is discharged from the exhaust plate 112, making the flow direction of the air flow conform to the rotation of the fan 21, which is beneficial to reducing the power consumption of the fan assembly 2.

[0063] As an embodiment of the present utility model, the side wall of the fan cavity 11 is further provided with a heat exchange plate 113, and the heat exchange plate 113 is arranged in parallel and opposite to the exhaust plate 112.

[0064] The heat exchange plate 113 is used to provide heat exchange for the compressor in the air source heat pump heat dissipation structure. By this setting method, it is beneficial to increase the contact area between the surface of the heat exchange plate 113 and the eddy current generated by the fan 21, and further improve the heat exchange efficiency of the compressor.

[0065] As an implementation manner of the present utility model, a second air inlet 121 for air intake is provided on the side wall of the electronic control cavity 12, and a first communication hole 122 for communicating with the fan cavity 11 is opened at the bottom of the electronic control cavity 12.

[0066] By this setting method, when the fan assembly 2 works, a negative pressure is formed inside the fan cavity 11 due to the relatively large air flow velocity. Also, because the bottom of the electronic control cavity 12 is communicated with the fan cavity 11, under the action of the negative pressure, the outside air flows into the electronic control cavity 12 through the second air inlet 121, and then flows into the fan cavity 11 from the first communication hole 122 at the bottom of the electronic control cavity 12, thereby improving the gas fluidity in the electronic control cavity 12 and being beneficial to further improving the heat exchange performance.

[0067] Embodiment 3

[0068] The following is the third embodiment of an air source heat pump heat dissipation structure of the present utility model. This embodiment is similar to Embodiment 1, and the difference lies in that the chassis 1 further includes a compression cavity 4.

[0069] As an implementation manner of the present utility model, the chassis 1 further includes a compression cavity 4. The compression cavity 4 is located at the bottom of the electronic control cavity 12 and beside the fan cavity 11. The compression cavity 4 is separated from the fan cavity 11 by a middle plate 5, and a second communication hole 51 is opened on the middle plate 5.

[0070] By this setting method, the compression cavity 4 can be used to install the compressor. The bottom of the electronic control cavity 12 is communicated with the compression cavity 4, and the side of the compression cavity 4 is communicated with the fan cavity 11, forming an air flow channel of the second air inlet 121, the electronic control cavity 12, the first communication hole 122, the compression cavity 4, and the second communication hole 51.

[0071] As an implementation manner of the present utility model, the reactor 32 is fixedly installed on the middle plate 5, and the second communication hole 51 is arranged beside the reactor 32.

[0072] By this setting method, the air flow in the compression cavity 4 enters the fan cavity 11 through the second communication hole 51, which can not only enhance the heat dissipation effect of the reactor 32 by passing through the surface of the reactor 32, but also quickly converge at the eddy current intersection, avoiding the formation of turbulent flow and increasing the power loss of the fan 21.

[0073] Obviously, the above embodiments of the present utility model are merely examples for clearly illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. An air source heat pump heat dissipation structure, comprising a chassis (1), a fan assembly (2) and an electric control assembly (3), wherein the electric control assembly (3) includes a frequency conversion board (31) and a reactor (32), and is characterized in that, The chassis (1) includes a fan chamber (11) and an electric control chamber (12). The fan assembly (2) and the reactor (32) are both installed in the fan chamber (11). The frequency conversion board (31) is arranged in the electric control chamber (12). The frequency conversion board (31) is provided with heat dissipation fins (33). The heat dissipation fins (33) are fixedly connected to the frequency conversion board (31), and the heat dissipation fins (33) are arranged at the junction of the electric control chamber (12) and the fan chamber (11).

2. The air source heat pump heat dissipation structure according to claim 1, characterized in that The fan assembly (2) includes at least two fan blades (21). The reactor (32) is fixedly installed in the fan chamber (11), and the reactor (32) is located between the two fan blades (21).

3. The air source heat pump heat dissipation structure according to claim 2, wherein A first air inlet (321) for air intake is provided on the side of the reactor (32), and an air outlet (322) for air outlet is provided at the bottom of the reactor (32).

4. The air source heat pump heat dissipation structure according to claim 2, characterized in that, A flow guide cover (22) is further provided outside the fan blade (21), and the flow guide cover (22) does not overlap with the projection of the heat dissipation fins (33) or the reactor (32) in the horizontal or vertical direction.

5. The air source heat pump heat dissipation structure according to claim 4, wherein, The heat dissipation fins (33) are further provided with a flow guide plate (331). The flow guide plate (331) is fixedly installed on the side of the heat dissipation fins (33) close to the fan blade (21).

6. The air source heat pump heat dissipation structure according to claim 5, characterized in that, One end of the flow guide plate (331) abuts against the heat dissipation fins (33), and the other end is inclined towards the direction of the fan blade (21).

7. The air source heat pump heat dissipation structure according to claim 6, characterized in that, The end of the heat dissipation fins (33) for air outlet protrudes from the flow guide plate (331).

8. The air source heat pump heat dissipation structure according to any one of claims 2 to 7, characterized in that, The side wall of the fan chamber (11) is provided with a first air intake plate (111) and an exhaust plate (112). The first air intake plate (111) is parallel to the rotation axis of the fan blade (21), the exhaust plate (112) is perpendicular to the rotation axis of the fan blade (21), and the exhaust plate (112) is located beside the air outlet end of the fan blade (21).

9. The air source heat pump heat dissipation structure according to claim 8, characterized in that The side wall of the fan chamber (11) is further provided with a heat exchange plate (113). The heat exchange plate (113) is parallel and opposite to the exhaust plate (112).

10. The air source heat pump heat dissipation structure according to claim 1, characterized in that The side wall of the electric control chamber (12) is provided with a second air inlet (121), and a first communication hole (122) for communicating with the fan chamber (11) is opened at the bottom of the electric control chamber (12).

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