Electric control box and air conditioner outdoor unit

Abstract

The electric control box comprises a box body, a circuit board and a heat dissipation assembly, the box body is provided with an electric control cavity and a receding hole communicated with the electric control cavity, the circuit board is installed in the electric control cavity, the heat dissipation assembly comprises heat dissipation fins, a heat dissipation cover and a driving piece, the heat dissipation fins are arranged on the circuit board, and the driving piece is arranged on the heat dissipation cover. The driving part is arranged in the box body and is in transmission connection with the heat dissipation cover, the heat dissipation cover is provided with heat dissipation holes, the driving part can drive the heat dissipation cover to move between an opening position and a closing position, at least part of the heat dissipation fins and the heat dissipation cover are arranged in a staggered mode at the opening position, and at least part of the heat dissipation fins and the heat dissipation cover are arranged in a staggered mode at the closing position. The heat dissipation cover covers the heat dissipation fins, and the heat dissipation holes are communicated with the heat dissipation channels, so that the heat dissipation efficiency of the electric control box can be adjusted, and the probability that impurities or dust enter the heat dissipation fins can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to an electrical control box and an outdoor unit of an air conditioner. Background Technology

[0002] With the development of air conditioning technology, the quality and reliability of air conditioners are gradually improving. However, in terms of air conditioning electronic control technology, especially the power semiconductor components of the outdoor unit's electronic control, the heat generated is relatively large, which causes the temperature of the outdoor unit's electronic control to rise, affecting the service life of the electronic control and easily leading to the problem of the electronic control temperature being too high and the unit shutting down for protection.

[0003] To dissipate heat from the air conditioner outdoor unit's electrical control box, heat dissipation fins are usually installed on the control box. However, since the heat dissipation efficiency of the heat dissipation fins is constant, the heat dissipation efficiency of the electrical control components cannot be adjusted according to the external environment. Furthermore, external impurities or dust can easily enter the interior of the heat dissipation fins, reducing the heat dissipation efficiency of the control box. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an electrical control box that can both adjust the heat dissipation efficiency of electrical control devices and reduce the probability of external impurities or dust entering the interior of the heat dissipation fins.

[0005] This utility model also proposes an air conditioner outdoor unit having the above-mentioned electrical control box.

[0006] The electrical control box according to a first aspect embodiment of the present invention includes:

[0007] The housing has an electrical control cavity and a clearance hole communicating with the electrical control cavity;

[0008] The circuit board is installed inside the electrical control cavity;

[0009] A heat dissipation assembly includes heat dissipation fins, a heat dissipation shroud, and a driving component. The heat dissipation fins are disposed on the circuit board and extend out of the electrical control cavity through the clearance hole. The heat dissipation fins have heat dissipation channels. The driving component is disposed on the housing and is drivenly connected to the heat dissipation shroud. The heat dissipation shroud has heat dissipation holes. The driving component can drive the heat dissipation shroud to move between an open position and a closed position. In the open position, the heat dissipation fins are at least partially offset from the heat dissipation shroud. In the closed position, the heat dissipation shroud covers the heat dissipation fins, and the heat dissipation holes communicate with the heat dissipation channels.

[0010] The electrical control box according to the first aspect embodiment of the present invention has at least the following beneficial effects:

[0011] Since the driving component can move the heat sink between the open and closed positions, when it is necessary to improve the heat dissipation efficiency of the control box, the heat sink can be moved to the open position so that at least part of the heat sink and the heat dissipation fins are offset, which can increase the ventilation of the heat dissipation channel. When the heat dissipation requirement of the control box is not high or when the machine is stopped, the heat sink can be moved to the closed position so that the heat sink covers the heat dissipation fins, and at this time the heat dissipation channel is connected to the heat dissipation hole. This can ensure the basic heat dissipation requirements of the control box and reduce the probability of impurities or dust entering the interior of the heat dissipation fins.

[0012] According to some embodiments of the present invention, the heat dissipation fins include a heat dissipation base and fin bodies disposed on the heat dissipation base. The heat dissipation base is connected to the circuit board. Multiple fin bodies are disposed side by side with intervals. The heat dissipation channels are formed between adjacent fin bodies. The heat dissipation cover is hinged to the heat dissipation base. The driving member can drive the heat dissipation cover to rotate relative to the heat dissipation base.

[0013] According to some embodiments of the present invention, the driving component includes a drive motor and a reduction gearbox. The reduction gearbox is provided with a reduction gear set. The output end of the drive motor is connected to the input end of the reduction gear set, and the output end of the reduction gear set is connected to the hinge shaft of the heat sink.

[0014] According to some embodiments of the present invention, the heat dissipation cover includes a peripheral wall plate, a first side plate and a second side plate. The first side plate and the second side plate are both disposed on the peripheral wall plate, and the first side plate and the second side plate are disposed opposite to each other. The peripheral wall plate, the first side plate and the second side plate enclose a protective cavity. In the closed position, a plurality of fin bodies are accommodated in the protective cavity.

[0015] According to some embodiments of the present invention, the peripheral wall panel, the first side panel, and the second side panel are an integral structure.

[0016] According to some embodiments of this utility model, the peripheral wall plate has an arc-shaped structure.

[0017] According to some embodiments of the present invention, the heat dissipation holes include a first hole group, a second hole group, and a third hole group. The first hole group is disposed on the peripheral wall plate and includes a plurality of first through holes arranged in an array at intervals. The second hole group is disposed on the first side plate and includes a plurality of second through holes arranged in an array at intervals. The third hole group is disposed on the second side plate and includes a plurality of third through holes arranged in an array at intervals.

[0018] According to some embodiments of this utility model, the width of the first through hole is greater than or equal to 2 mm and less than or equal to 4 mm; and / or,

[0019] The width of the second through hole is greater than or equal to 2 mm and less than or equal to 4 mm; and / or,

[0020] The width of the third through hole is greater than or equal to 2 mm and less than or equal to 4 mm.

[0021] According to some embodiments of the present invention, the electrical control box further includes a temperature sensor, which is disposed inside the electrical control cavity and electrically connected to the circuit board.

[0022] The outdoor unit of the air conditioner according to a second aspect of the present invention includes the electrical control box described in the above embodiments.

[0023] The outdoor unit of the air conditioner according to the second aspect embodiment of the present invention has at least the following beneficial effects:

[0024] Since the driving component can move the heat sink between the open and closed positions, when it is necessary to improve the heat dissipation efficiency of the control box, the heat sink can be moved to the open position so that at least part of the heat sink and the heat dissipation fins are offset, which can increase the ventilation of the heat dissipation channel. When the heat dissipation requirement of the control box is not high or when the machine is stopped, the heat sink can be moved to the closed position so that the heat sink covers the heat dissipation fins, and at this time the heat dissipation channel is connected to the heat dissipation hole. This can ensure the basic heat dissipation requirements of the control box and reduce the probability of impurities or dust entering the interior of the heat dissipation fins.

[0025] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the structure of the electrical control box according to an embodiment of the present utility model. The heat sink is in the closed position in the figure.

[0028] Figure 2 This is an exploded view of the electrical control box according to an embodiment of the present utility model;

[0029] Figure 3 This is a side view of the electrical control box according to an embodiment of the present utility model;

[0030] Figure 4 for Figure 3 Sectional view of line AA in the middle;

[0031] Figure 5This is a schematic diagram of the structure of the electrical control box according to an embodiment of the present utility model, in which the heat sink is in the open position;

[0032] Figure 6 This is a schematic diagram of the heat dissipation assembly according to an embodiment of the present utility model;

[0033] Figure 7 This is an exploded view of the heat dissipation component according to an embodiment of the present invention.

[0034] Figure label:

[0035] Box body 100, electrical control cavity 110, clearance hole 120, circuit board 200, heat dissipation component 300, heat dissipation fins 310, heat dissipation channel 311, heat dissipation base 312, fin body 313, heat dissipation cover 320, peripheral wall plate 321, first side plate 322, second side plate 323, first through hole 324, second through hole 325, third through hole 326, driving component 330, drive motor 331, reduction gearbox 332, hinge shaft 340. Detailed Implementation

[0036] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0037] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0039] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0040] In related technologies, in order to dissipate heat from the control box of the outdoor unit of an air conditioner, heat dissipation fins are usually installed on the control box. However, since the heat dissipation efficiency of the heat dissipation fins is constant, the heat dissipation efficiency of the control device cannot be adjusted according to the external environment, and external impurities or dust can easily enter the interior of the heat dissipation fins.

[0041] Reference Figures 1 to 5 According to a first aspect embodiment of the present invention, an electrical control box includes a box body 100, a circuit board 200, and a heat dissipation assembly 300. The box body 100 has an electrical control cavity 110 and a clearance hole 120 communicating with the electrical control cavity 110. The circuit board 200 is installed inside the electrical control cavity 110. The heat dissipation assembly 300 includes heat dissipation fins 310, a heat dissipation cover 320, and a driving component 330. The heat dissipation fins 310 are disposed on the circuit board 200 and extend out of the electrical control cavity 110 through the clearance hole 120. The heat dissipation fins 310 have heat dissipation channels 311. The drive unit 330 is disposed on the housing 100 and is connected to the heat sink 320 for transmission. The heat sink 320 is provided with heat dissipation holes. The drive unit 330 can drive the heat sink 320 to move between the open position and the closed position. In the open position, the heat sink fins 310 are at least partially offset from the heat sink 320. In the closed position, the heat sink 320 covers the heat sink fins 310. The heat dissipation holes are connected to the heat dissipation channel 311. In this way, the heat dissipation efficiency of the electrical control box can be adjusted, and the probability of impurities or dust entering the interior of the heat sink fins 310 can be reduced.

[0042] Specifically, since the drive unit 330 can drive the heat sink 320 to move between the open and closed positions, when it is necessary to improve the heat dissipation efficiency of the control box, the heat sink 320 can be moved to the open position so that the heat sink 320 and the heat dissipation fins 310 are at least partially offset, which can increase the ventilation of the heat dissipation channel 311. When the heat dissipation requirement of the control box is not high or when the machine is stopped, the heat sink 320 can be moved to the closed position so that the heat sink 320 covers the heat dissipation fins 310, and at this time the heat dissipation channel 311 is connected to the heat dissipation hole. This can ensure the basic heat dissipation requirements of the control box and reduce the probability of impurities or dust entering the interior of the heat dissipation fins 310.

[0043] Reference Figures 5 to 7 In some embodiments of this utility model, the heat dissipation fin 310 includes a heat dissipation base 312 and a fin body 313 disposed on the heat dissipation base 312. The heat dissipation base 312 is connected to the circuit board 200. Multiple fin bodies 313 are configured and arranged side by side with intervals. A heat dissipation channel 311 is formed between adjacent fin bodies 313. The heat dissipation cover 320 is hinged to the heat dissipation base 312. The driving member 330 can drive the heat dissipation cover 320 to rotate relative to the heat dissipation base 312, which can facilitate the movement of the heat dissipation cover 320 between the open position and the closed position.

[0044] Specifically, the side of the heat sink 312 away from the fin body 313 is connected to the circuit board 200. The fin body 313 extends out of the electrical control cavity 110 through the clearance hole 120. When the heat sink 320 is in the closed position, the heat sink 320 covers multiple fin bodies 313. The heat dissipation holes are connected to the heat dissipation channel 311. When the heat sink 320 moves from the closed position to the open position, the driving member 330 drives the heat sink 320 to rotate relative to the heat sink 312 so that the fin body 313 is not blocked by the heat sink 320, and the heat sink 320 can move conveniently between the open position and the closed position.

[0045] It should be noted that the heat sink 320 can also be slidably disposed on the heat sink base 312, and the driving member 330 can drive the heat sink 320 to slide in a direction close to or away from the heat sink 320 so that the heat sink 320 can move between the open position and the closed position, which is not limited here.

[0046] Reference Figure 1 , Figure 6 and Figure 7 In some embodiments of this utility model, the driving component 330 includes a driving motor 331 and a reduction gearbox 332. The reduction gearbox 332 is provided with a reduction gear set. The output end of the driving motor 331 is connected to the input end of the reduction gear set. The output end of the reduction gear set is connected to the hinge shaft 340 of the heat sink 320. By setting the reduction gear set, the rotation speed of the heat sink 320 can be reduced, so as to adjust the heat dissipation efficiency of the electrical control box.

[0047] Specifically, the reduction gear set located inside the reduction gearbox 332 includes multiple gears meshing sequentially. The number of teeth of the gear connected to the input end of the reduction gear set is less than the number of teeth of the gear connected to the output end of the reduction gear set. In this way, the rotation speed of the heat sink 320 can be reduced, so as to adjust the heat dissipation efficiency of the electrical control box.

[0048] It should be noted that the drive motor 331 can be a stepper motor or a servo motor, and there is no restriction here.

[0049] As another implementation, the drive motor 331 can also be directly connected to the hinge shaft 340 of the heat sink 320, which is not limited here.

[0050] It should be noted that the drive motor 331 is electrically connected to the circuit board 200 so that the circuit board 200 can control the operation of the drive motor 331, which will not be described in detail here.

[0051] Reference Figure 5In some embodiments of this utility model, the heat dissipation cover 320 includes a peripheral wall plate 321, a first side plate 322, and a second side plate 323. The first side plate 322 and the second side plate 323 are both disposed on the peripheral wall plate 321, and the first side plate 322 and the second side plate 323 are arranged opposite to each other. The peripheral wall plate 321, the first side plate 322, and the second side plate 323 enclose a protective cavity. When in the closed position, multiple fin bodies 313 are housed in the protective cavity, which can reduce the entry of impurities or dust into the heat dissipation channel 311, thereby ensuring the heat dissipation efficiency of the electrical control box.

[0052] In some embodiments of this utility model, the peripheral wall plate 321, the first side plate 322, and the second side plate 323 are an integral structure, which can reduce the number of molds, thereby reducing the production and manufacturing cost of the molds and thus reducing the production and manufacturing cost of the electrical control box.

[0053] Specifically, the peripheral wall panel 321, the first side panel 322, and the second side panel 323 can be integrally formed by injection molding, which can reduce the number of molds, thereby reducing the production and manufacturing costs of the molds and thus reducing the production and manufacturing costs of the electrical control box.

[0054] In another embodiment, both the first side plate 322 and the second side plate 323 can be connected to the peripheral wall plate 321 by welding. The welding method includes, but is not limited to, resistance welding, laser welding or ultrasonic welding.

[0055] In some embodiments of this utility model, the peripheral wall plate 321 has an arc-shaped structure, which can guide air to flow around the outer peripheral surface of the peripheral wall plate 321 so that the air can exchange heat with the peripheral wall plate 321, thereby meeting the basic heat dissipation requirements of the electrical control box.

[0056] Reference Figure 6 In some embodiments of this utility model, the heat dissipation holes include a first hole group, a second hole group, and a third hole group. The first hole group is located on the peripheral wall plate 321 and includes a plurality of first through holes 324 arranged in an array at intervals. The second hole group is located on the first side plate 322 and includes a plurality of second through holes 325 arranged in an array at intervals. The third hole group is located on the second side plate 323 and includes a plurality of third through holes 326 arranged in an array at intervals. This ensures airflow within the heat dissipation cover 320 to meet the basic heat dissipation requirements of the electrical control box.

[0057] Specifically, the first through hole 324, the second through hole 325, and the third through hole 326 are all circular structures. By setting the first hole group, the second hole group, and the third hole group, air outside the heat sink 320 can enter the interior of the heat sink 320 from three different directions, which can ensure airflow inside the heat sink 320 to meet the basic heat dissipation requirements of the electrical control box.

[0058] It should be noted that the first through hole 324, the second through hole 325, and the third through hole 326 can also be strip-shaped structures, and there is no restriction here.

[0059] In some embodiments of this utility model, the width of the first through hole 324 is greater than or equal to 2mm and less than or equal to 4mm, which can facilitate air flow and reduce the probability of external impurities or dust entering the avoidance channel.

[0060] Similarly, the width of the second through hole 325 is greater than or equal to 2mm and less than or equal to 4mm, and the width of the third through hole 326 is greater than or equal to 2mm and less than or equal to 4mm. This facilitates airflow and reduces the probability of external impurities or dust entering the clearance channel.

[0061] In some embodiments of this utility model, the electrical control box further includes a temperature sensor (not shown in the figure), which is disposed in the electrical control cavity 110 and electrically connected to the circuit board 200.

[0062] Understandably, the temperature sensor is used to detect the temperature of the control box. When the operating temperature of the control box exceeds a certain threshold, it can transmit a signal to the circuit board 200. The circuit board 200 can then send a signal to the drive motor 331, which in turn drives the heat sink 320 to rotate, moving it to the open position. Similarly, when the operating temperature of the control box falls below a certain threshold or the machine stops, it can transmit a signal to the circuit board 200, which can then send a signal to the drive motor 331. The drive motor 331 then drives the heat sink 320 to rotate in the opposite direction, moving it to the closed position.

[0063] It should be noted that the temperature sensor can be a thermistor temperature sensor or a thermocouple temperature sensor, etc., and there are no restrictions here.

[0064] The outdoor unit of the air conditioner according to the second aspect of the present invention includes the electrical control box of the first aspect of the present invention, which can both adjust the heat dissipation efficiency of the electrical control box and reduce the probability of impurities or dust entering the interior of the heat dissipation fins 310.

[0065] Specifically, since the drive unit 330 can drive the heat sink 320 to move between the open and closed positions, when it is necessary to improve the heat dissipation efficiency of the control box, the heat sink 320 can be moved to the open position so that the heat sink 320 and the heat dissipation fins 310 are at least partially offset, which can increase the ventilation of the heat dissipation channel 311. When the heat dissipation requirement of the control box is not high or when the machine is stopped, the heat sink 320 can be moved to the closed position so that the heat sink 320 covers the heat dissipation fins 310, and at this time the heat dissipation channel 311 is connected to the heat dissipation hole. This can ensure the basic heat dissipation requirements of the control box and reduce the probability of impurities or dust entering the interior of the heat dissipation fins 310.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The present invention has been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. An electrical control box, characterized in that, include: The housing (100) is provided with an electrical control cavity (110) and a clearance hole (120) communicating with the electrical control cavity (110); A circuit board (200) is installed inside the electrical control cavity (110); A heat dissipation assembly (300) includes heat dissipation fins (310), a heat dissipation cover (320), and a drive unit (330). The heat dissipation fins (310) are disposed on the circuit board (200) and extend out of the electrical control cavity (110) through the clearance hole (120). The heat dissipation fins (310) have a heat dissipation channel (311). The drive unit (330) is disposed on the housing (100) and is connected to the heat dissipation cover (320). The heat dissipation cover (320) has heat dissipation holes. The drive unit (330) can drive the heat dissipation cover (320) to move between an open position and a closed position. In the open position, the heat dissipation fins (310) are at least partially offset from the heat dissipation cover (320). In the closed position, the heat dissipation cover (320) covers the heat dissipation fins (310). The heat dissipation holes communicate with the heat dissipation channel (311).

2. The electrical control box according to claim 1, characterized in that, The heat dissipation fins (310) include a heat dissipation base (312) and fin bodies (313) disposed on the heat dissipation base (312). The heat dissipation base (312) is connected to the circuit board (200). Multiple fin bodies (313) are arranged side by side with intervals. The heat dissipation channel (311) is formed between adjacent fin bodies (313). The heat dissipation cover (320) is hinged to the heat dissipation base (312). The driving member (330) can drive the heat dissipation cover (320) to rotate relative to the heat dissipation base (312).

3. The electrical control box according to claim 2, characterized in that, The drive unit (330) includes a drive motor (331) and a reduction gearbox (332). The reduction gearbox (332) is provided with a reduction gear set. The output end of the drive motor (331) is connected to the input end of the reduction gear set. The output end of the reduction gear set is connected to the hinge shaft (340) of the heat sink (320).

4. The electrical control box according to claim 2, characterized in that, The heat dissipation shroud (320) includes a peripheral wall plate (321), a first side plate (322), and a second side plate (323). The first side plate (322) and the second side plate (323) are both disposed on the peripheral wall plate (321), and the first side plate (322) and the second side plate (323) are arranged opposite to each other. The peripheral wall plate (321), the first side plate (322), and the second side plate (323) enclose a protective cavity. In the closed position, a plurality of fin bodies (313) are accommodated in the protective cavity.

5. The electrical control box according to claim 4, characterized in that, The peripheral wall panel (321), the first side panel (322), and the second side panel (323) are an integral structure.

6. The electrical control box according to claim 4, characterized in that, The peripheral wall panel (321) has an arc-shaped structure.

7. The electrical control box according to claim 4, characterized in that, The heat dissipation holes include a first hole group, a second hole group, and a third hole group. The first hole group is located on the peripheral wall plate (321) and includes a plurality of first through holes (324) arranged in an array at intervals. The second hole group is located on the first side plate (322) and includes a plurality of second through holes (325) arranged in an array at intervals. The third hole group is located on the second side plate (323) and includes a plurality of third through holes (326) arranged in an array at intervals.

8. The electrical control box according to claim 7, characterized in that, The width of the first through hole (324) is greater than or equal to 2 mm and less than or equal to 4 mm; and / or, The width of the second through hole (325) is greater than or equal to 2 mm and less than or equal to 4 mm; and / or, The width of the third through hole (326) is greater than or equal to 2 mm and less than or equal to 4 mm.

9. The electrical control box according to claim 1, characterized in that, The electrical control box also includes a temperature sensor, which is located inside the electrical control cavity (110) and electrically connected to the circuit board (200).

10. An outdoor unit for an air conditioner, characterized in that, Includes the electrical control box as described in any one of claims 1 to 9.

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