Heat dissipation structure of patch power module of variable frequency air conditioner outdoor unit controller

Abstract

A heat dissipation structure of a chip power module of a variable frequency air conditioner outdoor unit controller comprises an electric control box and a PCB installed in the electric control box, and the PCB is provided with a chip fan module. A through hole is formed in the bottom of the electric control box, the through hole is located under the patch fan module, and the heat dissipation surface of the patch fan module faces the through hole; the LED lamp further comprises a radiator, the radiator is located below the electric control box, and the radiator abuts against the heat dissipation face of the patch fan module through the through hole. And the area of the radiator is larger than that of the patch fan module. The size of the radiator is not limited by the poses of the components on the PCB, so that the area of the radiator can be increased, and the radiating effect of the patch fan module is improved. The patch fan module can operate efficiently in the high-temperature environment, and it is ensured that the performance of the air conditioner outdoor unit can be stably exerted in the high-temperature environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioner outdoor unit heat dissipation technical field especially a kind of heat dissipation structure of frequency conversion air conditioner outdoor unit controller patch power module. BACKGROUND

[0002] Frequency conversion air conditioner outdoor unit controller receives communication information from indoor unit, including temperature setting, mode selection and the like instruction.Frequency conversion air conditioner outdoor unit controller is the key component of frequency conversion air conditioner system, it is responsible for controlling and adjusting the operation of air conditioner compressor, to realize accurate control to indoor temperature.But since the working environment of air conditioner outdoor unit is in high temperature environment, to enable the controller to continuously and normally work, it needs to install radiator on the patch power module of controller, to reduce the temperature of PCB board in controller.

[0003] At present, frequency conversion air conditioner outdoor unit controller generally uses patch direct-current fan module to replace plug-in direct-current fan module to improve manufacturing efficiency and reduce cost.Under normal circumstances, the heat dissipation surface of patch fan module is in the front of patch power module, and the front of patch power module and the front of PCB board are in the same direction, since the front of PCB board has other devices.At this time, only the area of radiator can be sacrificed to ensure the normal operation of PCB board.This also leads to the problem of heat generation of patch direct-current fan module being difficult to solve under outdoor high temperature working condition, which limits the improvement of speed of patch direct-current fan module under high temperature, thereby indirectly limiting the performance of air conditioner outdoor unit under high temperature. SUMMARY

[0004] In view of the above defects, the purpose of the utility model is to provide a kind of heat dissipation structure of frequency conversion air conditioner outdoor unit controller patch power module, solve the problem of poor patch fan heat dissipation effect, leading to the performance of air conditioner outdoor unit is reduced.

[0005] To achieve this purpose, the utility model adopts the following technical scheme: a kind of heat dissipation structure of frequency conversion air conditioner outdoor unit controller patch power module, including electric control box and the PCB board installed in electric control box, the PCB board is installed with patch fan module;

[0006] The bottom of the electric control box is provided with through hole, the through hole is located just below patch fan module, and the heat dissipation surface of patch fan module faces the through hole;

[0007] It further includes radiator, the radiator is located in the lower of the electric control box, and the radiator is in contact with the heat dissipation surface of patch fan module through the through hole;

[0008] The area of the radiator is greater than the area of the patch fan module.

[0009] Preferably, the PCB is provided with a first connecting hole on both sides of the patch fan.

[0010] The heat sink is provided with a plurality of second connecting holes corresponding to the first connecting holes, and the connecting pieces are respectively inserted into the first connecting holes and the second connecting holes to fix the heat sink to the lower part of the heat sink.

[0011] Preferably, the heat sink comprises a base plate and fins, the fins are equidistantly arranged on one side of the base plate, and the base plate is provided with second connecting holes between the fins.

[0012] The base plate away from the fins is further provided with a boss, and the boss is in abutment with the patch fan module.

[0013] Preferably, the through hole covers the boss in the orthographic projection, and the boss covers the patch fan module in the orthographic projection.

[0014] Preferably, the facing surfaces between the fins are provided with protrusions, and the protrusions extend from one end of the fins to the other end along the length direction.

[0015] A plurality of the protrusions are equidistantly arranged along the length direction of the fins.

[0016] Preferably, the protrusions are in the shape of a circular arc, and the included angle α between the protrusions and the edges of the fins is greater than 90°.

[0017] Preferably, the distance between the fins is greater than 0.5 cm and less than 1 cm.

[0018] Preferably, the first connecting hole and the second connecting hole are screw holes, and the connecting piece is a threaded stud.

[0019] One of the above technical solutions has the following advantages or beneficial effects: the through hole is formed in the bottom of the electric control box, the heat dissipation surface of the patch fan module faces the through hole, and the heat sink can be installed on the lower part of the electric control box, so that the heat sink is separated from the components on the PCB and is not in the same plane. At this time, the size of the heat sink is not limited by the pose of the components on the PCB, and the area of the heat sink can be increased to improve the heat dissipation effect of the patch fan module. The patch fan module can still work efficiently in a high-temperature environment, and the performance of the air conditioner outdoor unit can be stably exerted in a high-temperature environment. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is an exploded view of one embodiment of the utility model.

[0021] Figure 2It is a structure schematic view of the radiator in one embodiment of the utility model.

[0022] Figure 3 It is Figure 2 The enlarged view at a in the middle.

[0023] Among them: electric control box 1, PCB board 2, patch fan module 3, through hole 4, radiator 5, base plate 5a, fin 5b, boss 5c, convex strip 5d, first connecting hole 6, second connecting hole 7, connecting piece 8. DETAILED DESCRIPTION

[0024] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0025] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore, cannot be understood as limiting the utility model.

[0026] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0027] In the description of the utility model, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] As Figures 1 to 3As shown, a variable frequency air conditioner outdoor unit controller patch power module heat dissipation structure, including electric control box (1) and install in electric control box (1) PCB board (2), the PCB board (2) is installed with patch fan module (3);

[0029] The bottom of the electric control box (1) is provided with a through hole (4), and the through hole (4) is located directly below the patch fan module (3), and the heat dissipation surface of the patch fan module (3) faces the through hole (4);

[0030] Further comprising a heat sink (5), the heat sink (5) is located in the lower part of the electric control box (1), and the heat sink (5) is in contact with the heat dissipation surface of the patch fan module (3) through the through hole (4);

[0031] The area of the heat sink (5) is greater than the area of the patch fan module (3).

[0032] Because the heat sink (5) is limited by other components on the PCB board (2) during installation, the area of the heat sink (5) is equal to the area of the patch fan module, and the heat dissipation cannot be effectively carried out. Therefore, in the utility model, the through hole (4) is formed in the bottom of the electric control box (1), the heat dissipation surface of the patch fan module faces the through hole (4), and at this time, the heat sink (5) can be installed in the lower part of the electric control box (1), so that the heat sink (5) is separated from the components on the PCB board (2) and is not in the same plane. At this time, since the size of the heat sink (5) is not limited by the position of the components on the PCB board (2), the area of the heat sink (5) can be increased to improve the heat dissipation effect of the patch fan module (3). The patch fan module (3) can still work efficiently in a high-temperature environment, and the performance of the air conditioner outdoor unit can be stably exerted in a high-temperature environment.

[0033] In order to maintain good heat dissipation, the heat-conducting glue or silicone can be applied on the heat dissipation surface of the patch fan module (3) to fill the gap between the patch fan module and the heat sink (5), so as to improve the heat exchange efficiency.

[0034] Preferably, the PCB board (2) is provided with a first connecting hole (6) on each side of the patch fan.

[0035] The heat sink (5) is provided with a plurality of second connecting holes (7), and the positions of the second connecting holes (7) correspond to the first connecting holes (6) in up and down directions. The connecting pieces (8) pass through the first connecting holes (6) and the second connecting holes (7) respectively, so that the heat sink (5) is fixed on the lower part of the heat sink (5).

[0036] Since the air conditioner outdoor unit is arranged in the outdoor, it may be interfered by the external environment during operation, thereby causing the body vibration. At this time, the connection of the radiator (5) and the patch fan module (3) is affected, thereby causing the patch fan module to be unable to effectively dissipate heat. Therefore, in the utility model, the radiator (5) is fixed by the connecting piece (8), so that the radiator (5) can maintain the relative pose with the patch fan module (3), so that the two always keep the abutting state.

[0037] Preferably, the radiator (5) comprises a base plate (5a) and fins (5b), the fins (5b) are equidistantly arranged on one side of the base plate (5a), and a second connecting hole (7) is formed in the base plate (5a) and located between the fins (5b).

[0038] The side, away from the fins (5b), of the base plate (5a) is further provided with a boss (5c), and the boss (5c) abuts against the patch fan module (3).

[0039] Since the area of the radiator (5) is larger than that of the patch fan module (3), and the two are separated by the electric control box (1), in order to better abut the radiator (5) against the patch fan module (3), in the utility model, the radiator (5) is provided with a boss (5c), the boss (5c) abuts against the heat dissipation surface of the patch fan module (3), and the area of the base plate (5a) is larger than that of the boss (5c), so as to increase the heat dissipation surface and improve the heat dissipation effect. When dissipating heat, the heat dissipation surface of the patch fan module (3) transmits heat to the base plate (5a) through the boss (5c), and the base plate (5a) transmits the heat to the fins (5b), so as to exchange heat with air through the fins (5b) and realize cooling.

[0040] Preferably, the boss (5c) is covered by the normal projection of the through hole (4), and the normal projection of the boss (5c) covers the patch fan module (3).

[0041] In order to enable the boss (5c) to pass through the through hole (4) and abut against the heat dissipation surface of the patch fan module (3), the normal projection of the through hole (4) must cover the boss (5c). The normal projection of the boss (5c) covers the patch fan module (3), so that the boss (5c) can cover the heat dissipation surface of the patch fan module (3) when abutting. The heat dissipation effect is ensured.

[0042] Preferably, the facing surfaces between the fins (5b) are provided with protrusions (5d), the protrusions (5d) extend from one end of the fins (5b) to the other end along the length direction.

[0043] A plurality of said protrusions (5d) are arranged equidistantly along the length direction of said fins (5b).

[0044] The presence of protrusions (5d) further increases the surface area of the heat dissipation fins (5b). Compared with smooth fins (5b), the fins (5b) with protrusions (5d) can exchange heat with air more effectively. This is because when air flows through the protrusions (5d), it generates more turbulence and disturbance, thereby increasing the contact area and contact time of air with the surface of the fins (5b). This increased contact area and contact time facilitates heat transfer and dissipation, thus improving the heat dissipation efficiency.

[0045] In addition, the protrusions (5d) also help to break the boundary layer on the surface of the fins (5b), preventing the increase of thermal resistance during heat transfer. The boundary layer is a layer of fluid (such as air) near the surface of a solid, with slow flow speed and high temperature. Its existence hinders heat transfer. The design of the protrusions (5d) can break this boundary layer, allowing the fluid to exchange heat more fully with the surface of the fins (5b).

[0046] Preferably, the shape of said protrusions (5d) is circular arc, and the angle α between the protrusions (5d) and the edge of the fins (5b) is greater than 90°.

[0047] As shown in Figure 3 The angle α between the protrusions (5d) and the edge of the fins (5b) is in the form of an obtuse angle. At this time, the collision and energy loss between the fluid (air) and the protrusions (5d) can be reduced, improving the fluid dynamics performance, so that the fluid (air) flows faster, accelerating the heat dissipation efficiency. The circular arc shape can effectively guide air flow from different directions, forming a smooth air duct to reduce wind resistance and improve heat dissipation efficiency.

[0048] Preferably, the distance between said fins (5b) is greater than 0.5 cm and less than 1 cm.

[0049] If the distance between the fins (5b) is too small, the air between the fins (5b) will affect each other, making the air duct flow not smooth, and reducing the heat dissipation efficiency. If the distance between the fins (5b) is too large, it will result in a smaller number of fins (5b) on the substrate (5a), which will also affect the heat dissipation efficiency. When the distance between the fins (5b) is greater than 0.5 cm and less than 1 cm, the air flow between the fins (5b) will not affect each other, and the number of fins (5b) on the substrate (5a) can be ensured.

[0050] Preferably, said first connecting hole (6) and second connecting hole (7) are screw holes, and said connecting piece (8) is a stud.

[0051] The heat sink (5) can be installed and dismounted quickly by the way of the stud, and the installation difficulty of the heat sink (5) is reduced.

[0052] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0053] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and the spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A heat dissipation structure of a variable frequency air conditioner outdoor unit controller patch power module, comprising an electric control box and a PCB board installed in the electric control box, and the PCB board is installed with a patch fan module, characterized in that: a through hole is formed in the bottom of the electric control box, the through hole is located directly below the patch fan module, and the heat dissipation surface of the patch fan module faces the through hole; a heat sink is further arranged below the electric control box, the heat sink is in contact with the heat dissipation surface of the patch fan module through the through hole; and the area of the heat sink is larger than that of the patch fan module. First connecting holes are arranged on both sides of the PCB board corresponding to the patch fan. Second connecting holes are formed in the heat sink, the positions of the second connecting holes correspond to the first connecting holes, and connecting pieces are arranged to pass through the first connecting holes and the second connecting holes to fix the heat sink below the heat sink. The heat sink comprises a base plate and fins, the fins are arranged equidistantly on one side of the base plate, second connecting holes are formed in the base plate, and the second connecting holes are located in the gaps between the fins.

2. The heat dissipation structure of the power module of the controller patch of the outdoor unit of the variable frequency air conditioner according to claim 1, characterized in that: The other side of the base plate away from the fins is further provided with a boss, and the boss is in contact with the patch fan module. The orthographic projection of the through hole covers the boss, and the orthographic projection of the boss covers the patch fan module.

3. The heat dissipation structure of the power module of the controller patch of the outdoor unit of the variable frequency air conditioner according to claim 2, characterized in that: Ridges are arranged on the facing surfaces between the fins, and the ridges extend from one end of the fins to the other end along the length direction. A plurality of ridges are arranged equidistantly along the length direction of the fins.

4. The heat dissipation structure of the power module of the controller patch of the outdoor unit of the variable frequency air conditioner according to claim 3, characterized in that: The shape of the ridges is arc-shaped, and the included angle a between the ridges and the edges of the fins is greater than 90°.

5. The heat dissipation structure of the power module of the controller patch of the outdoor unit of the variable frequency air conditioner according to claim 3, characterized in that: The distance between the fins is greater than 0.5 cm and less than 1 cm. The first connecting holes and the second connecting holes are screw holes, and the connecting pieces are screw posts.

6. The heat dissipation structure of the power module of the controller patch of the outdoor unit of the variable frequency air conditioner according to claim 5, characterized in that: ​ 7. The heat dissipation structure of the power module of the controller patch of the outdoor unit of the variable frequency air conditioner according to claim 5, characterized in that: ​ 8. The heat dissipation structure of the power module of the controller patch of the outdoor unit of the variable frequency air conditioner according to claim 5, characterized in that: ​

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