Electric cabinet and heat pump host

Abstract

The utility model discloses an electric cabinet and a heat pump host. The electric cabinet comprises a cabinet body and a circuit board module. The circuit board module comprises a first circuit board, a second circuit board and a support frame; the first circuit board is arranged in the box body, the second circuit board is connected with the supporting frame, and the supporting frame is arranged in the box body and located on one side of the first circuit board. When the heat pump host is in a normal working state, the second circuit board can be located at the first position and is parallel to the first circuit board at intervals, and the size of the electric cabinet is reduced as much as possible. When the electric cabinet needs to be overhauled, the second circuit board can be placed at the second position by turning over the movable part of the supporting structure, and the second circuit board and the first circuit board are arranged at an included angle at the second position, so that the maximum distance between the second circuit board and the first circuit board is increased; and more space is exposed for maintenance personnel to maintain the second circuit board or the first circuit board.

Description

Technical Field

[0001] The utility model relates to the technical field of heat pumps, in particular to an electric control box and a heat pump host. Background Art

[0002] Existing heat pumps usually require circuit boards to control operation, and the circuit boards are usually placed in the electrical control box of the heat pump main unit. As the specifications of heat pumps increase, the number of electrical components required to be arranged on the circuit boards increases, resulting in an increase in the area of ​​the circuit boards, and thus an increase in the volume of the electrical control box. In the prior art, the problem of large circuit board area is addressed by increasing the number of circuit boards, but after the number of circuit boards increases, the positions of the circuit boards will interfere with each other, making it inconvenient to inspect and repair each circuit board. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved electric control box and a heat pump host to improve the convenience of circuit board maintenance.

[0004] The technical solution adopted by the utility model to solve the technical problem is: to provide an electric control box, which includes:

[0005] Box;

[0006] A circuit board module, the circuit board module comprising a first circuit board, a second circuit board and a supporting structure;

[0007] The first circuit board is arranged inside the box;

[0008] The support structure includes a fixed portion and a movable portion, wherein the fixed portion is arranged inside the box and outside the first circuit board;

[0009] The second circuit board is arranged on the movable part, the movable part comprises a rotating connection part, the rotating connection part is located at the lower side of the movable part, and the movable part is connected to the fixed part through the rotating connection part, so that the second circuit board moves between the first position and the second position;

[0010] When the second circuit board is in the first position, the second circuit board is arranged substantially parallel to the first circuit board;

[0011] When the second circuit board is in the second position, the second circuit board is arranged at an angle to the first circuit board.

[0012] Preferably, the fixing portion is fixedly connected to the inner wall of the box body and is located on the periphery of the first circuit board.

[0013] Preferably, the fixing portion includes a first fixing member and a second fixing member, the first fixing member and the second fixing member are respectively fixedly connected to the inner wall of the box body, and the movable portion also includes a first corner portion and a second corner portion, and the first corner portion is connected to the first fixing member through the rotating connection portion;

[0014] When the second circuit board is in the first position, the second corner portion is connected to the second fixing member;

[0015] When the second circuit board is at the second position, the second corner portion is separated from the second fixing member.

[0016] Preferably, the second corner portion is provided with a notch; when the second circuit board is in the first position, the notch is engaged and connected with the second fixing member.

[0017] Preferably, the fixing portion is provided with a slot, and the rotating connecting portion is engaged with the slot;

[0018] And / or, the fixed portion and a side of the movable portion away from the rotating connection portion are fastened by screws.

[0019] Preferably, the movable portion is annular and defines an opening, and the second circuit board is partially exposed to the opening;

[0020] And / or, the first circuit board includes a third surface arranged toward the second circuit board and a fourth surface arranged away from the second circuit board, the third surface being used to mount the first power element; the circuit board module also includes a heat sink, which is located on the fourth surface.

[0021] Preferably, the electric control box further comprises a terminal module for connecting external cables, the first circuit board and / or the second circuit board, wherein the terminal module is connected to the box body and is located on one side of the circuit board module.

[0022] Preferably, a first power element is provided on the first circuit board, and a second power element is provided on the second circuit board, and the operating power of the first power element is less than the operating power of the second power element; the box body is provided with an inspection port, and when the second circuit board is in the first position, the second circuit board is closer to the inspection port than the first circuit board.

[0023] Preferably, the supporting structure is a supporting frame or a box body.

[0024] The utility model also provides a heat pump host, which comprises the electric control box described in any one of the above items.

[0025] The utility model has at least the following beneficial effects: when the heat pump host is in normal working state, the second circuit board can be in the first position, arranged parallel to the first circuit board, and the volume of the electric control box can be minimized. When the electric control box needs to be repaired, the second circuit board can be placed in the second position by flipping the movable part of the supporting structure. In this position, the second circuit board is arranged at an angle with the first circuit board, so that the maximum distance between the second circuit board and the first circuit board is increased, exposing more space for maintenance personnel to repair the second circuit board or the first circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments, in which:

[0027] Figure 1 It is a schematic diagram of the structure of the heat pump host in some embodiments of the utility model;

[0028] Figure 2 yes Figure 1 The structure diagram of the outdoor unit shown is a diagram with part of the casing removed;

[0029] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure of part A;

[0030] Figure 4 yes Figure 2 The schematic diagram of the inspection status of the circuit board module of the outdoor unit is shown;

[0031] Figure 5 yes Figure 4 A schematic structural diagram of a support frame of the circuit board module shown;

[0032] Figure 6 yes Figure 5 A schematic diagram of the enlarged structure of part B;

[0033] Figure 7 yes Figure 5 A schematic structural diagram of the movable portion of the support frame shown;

[0034] Figure 8 yes Figure 1 The schematic diagram of the structure of the inspection panel on the outdoor unit shown;

[0035] Fig. 9 It is a structural schematic diagram when the supporting structure is a box body. DETAILED DESCRIPTION

[0036] In order to have a clearer understanding of the technical features, purposes and effects of the present utility model, the specific implementation methods of the present utility model are now described in detail with reference to the accompanying drawings.

[0037] See also Figure 1 to Figure 2 , Figure 1 The overall structure of a heat pump main unit according to an embodiment of the utility model is shown. The heat pump main unit comprises a casing 1 , an outdoor heat exchanger 10 arranged in the casing 1 , and an electric control box 20 . Figure 2 for Figure 1 The schematic diagram of the structure after removing part of the casing 1, in which the up and down directions correspond to the height directions of the casing 1, shows that the electric control box 20 is located below the outdoor heat exchanger 10 along the height direction of the casing 1, that is, the electric control box 20 is closer to the ground relative to the outdoor heat exchanger 10, which makes it convenient for personnel to inspect and repair the electric control box 20.

[0038] like Figures 2 to 4 As shown, the electric control box 20 of one embodiment of the utility model includes a box body 24 and a circuit board module. The circuit board module includes a first circuit board 21, a second circuit board 22 and a supporting structure. Of course, in other embodiments not shown in the figure, the circuit board module may also include a larger number of circuit boards, for example, a third circuit board, a fourth circuit board, etc. That is, the circuit board module includes at least two circuit boards, and the electrical components can be dispersedly arranged on a plurality of different circuit boards to cope with the situation where a large number of electrical components are required in the electric control box 20. The box body 24 is roughly rectangular in shape, and can accommodate the circuit board module therein. However, the box body 24 is not limited to being a rectangular parallelepiped, and can also be other shapes. As Figures 4 to 7 As shown, in some embodiments, the support structure may be a support frame 23. The first circuit board 21 is disposed inside the box body 24, the second circuit board 22 is connected to the support frame 23, and the support frame 23 is disposed inside the box body 24 and is located on one side of the first circuit board 21. Specifically, the support frame 23 is located on the outside of the first circuit board 21, and the outside of the first circuit board 21 is in the same direction as the outside of the housing 1. That is, the inside and outside of the housing 1 are in opposite directions. The first circuit board 21 is closer to the inside of the housing 1 relative to the support frame 23, the support frame 23 is closer to the outside of the housing 1 relative to the first circuit board 21, and the second circuit board 22 is connected to the support frame 23, so the first circuit board 21 is closer to the inside of the housing 1 relative to the second circuit board 22, that is, the second circuit board 22 is disposed on the outside of the first circuit board 21 through the support frame 23.

[0039] like Figure 4 and Figure 6As shown, the support frame 23 includes a fixed portion 231 and a movable portion 232. The fixed portion 231 is disposed inside the box body 24 and is located outside the first circuit board 21. The second circuit board 22 is disposed on the movable portion 232, and the movable portion 232 includes a rotating connection portion 262, which is located at the lower side of the movable portion 232. That is, the rotating connection portion 262 is located below the movable portion 232 along the height direction of the housing 1. The movable portion 232 is connected to the fixed portion 231 through the rotating connection portion 262, so that the second circuit board 22 moves between the first position and the second position.

[0040] like Figure 3 and Figure 4 As shown, when the second circuit board 22 is in the first position, the second circuit board 22 is arranged substantially parallel to the first circuit board 21. Moreover, the second circuit board 22 is arranged opposite to the first circuit board 21, that is, the second circuit board 22 and the first circuit board 21 are located at the same height in the height direction of the housing 1. When the second circuit board 22 is in the second position, the second circuit board 22 is arranged at an angle to the first circuit board 21. Specifically, when the heat pump host is in normal working state, the second circuit board 22 can be in the first position, arranged parallel to the first circuit board 21, and the volume of the electric control box 20 can be minimized, but the opening 264 of the electric control box 20 for maintenance is usually only set in one position. When the first circuit board 21 is closer to the opening 264, the first circuit board 21 will block the second circuit board 22; when the second circuit board 22 is closer to the opening 264, the second circuit board 22 will block the first circuit board 21, so the first circuit board 21 and the second circuit board 22 will cause position interference to each other during maintenance. In order to solve this problem, when the electrical control box 20 needs to be repaired, the second circuit board 22 can be placed in the second position by flipping the support frame 23. In this position, the second circuit board 22 is set at an angle with the first circuit board 21, and the angle can be greater than 0° and less than or equal to 180°, so that the maximum distance between the second circuit board 22 and the first circuit board 21 is increased, exposing more space for maintenance personnel to repair the second circuit board 22 or the first circuit board 21.

[0041] Through the above arrangement, the following effects are achieved: 1) the maximum distance between the second circuit board 22 and the first circuit board 21 is increased, exposing more space for maintenance personnel to inspect the second circuit board 22 or the first circuit board 21; 2) the movable part 232 is connected to the fixed part 231 through the rotating connecting part 262, so that when the second circuit board 22 is set at an angle, the position of the second circuit board 22 remains stable, preventing the second circuit board 22 from shaking during maintenance, and there is no need to use additional force or support structure to support the second circuit board 22, so that maintenance is more convenient.

[0042] like Figure 3As shown, in some embodiments, the box 24 is provided with an inspection port 240, through which maintenance personnel inspect the circuit board module in the box 24. The inspection port 240 faces the outside of the housing 1. Figure 1 and Figure 8 As shown, the housing 1 is provided with an access panel 11 separately on one side of the access opening 240, and the access panel 11 is located below the outdoor heat exchanger 10. The access panel 11 is provided with screw holes 110 for inserting screws, and the access panel 11 is fixed to the housing 1 by screws. The access panel 11 includes a body, and a handle 111 is recessed on the body to facilitate disassembly and assembly by personnel. When maintenance is required, the personnel only need to hold the handle 111 and remove the access panel 11, and then the box body 24 can be inspected through the access opening 240.

[0043] When the second circuit board 22 is in the first position, the second circuit board 22 is closer to the inspection opening 240 than the first circuit board 21, so the second circuit board 22 will block the first circuit board 21, making it inconvenient to inspect the first circuit board 21. Figure 4 As shown, by flipping the second circuit board 22 to the second position through the movable portion 232, more space can be exposed so that personnel can reach the first circuit board 21 for maintenance. After the maintenance is completed, the second circuit board 22 can be flipped back to the first position through the movable portion 232.

[0044] like Figure 4 As shown, in some embodiments, a first power element 210 is provided on the first circuit board 21, and a second power element 220 is provided on the second circuit board 22, and the operating power of the first power element 210 is less than the operating power of the second power element 220. Specifically, the second power element 220 may include an IPM module (Intelligent Power Module), which is a highly integrated and high-performance power semiconductor device module. The IPM module is mainly used to control the speed of the motor of the variable frequency compressor to achieve the frequency change function of controlling the compressor. The first power element 210 may include components such as an inductor and a capacitor. Generally, the second power element 220 with a larger operating power has a denser component layout and a higher component maintenance frequency than the first power element 210 with a smaller operating power. Therefore, in some embodiments, the second circuit board 22 for arranging the second power element 220 with a larger operating power may be arranged at a position closer to the inspection port 240 to facilitate the inspection of the second power element 220 with a larger operating power.

[0045] Furthermore, if Figure 3 and Figure 4In the illustrated embodiment, the second circuit board 22 includes a first surface 221 and a second surface 222. In the first position, the first surface 221 faces the inspection port 240, and the second surface 222 faces away from the inspection port 240. The second power element 220 is located on the first surface 221. In this way, the second circuit board 22 can be directly inspected and repaired by simply exposing the inspection port 240, without moving the position of the second circuit board 22. Of course, in other embodiments, the second power element 220 can also be set on the second surface 222, and the second circuit board 22 needs to be flipped to the second position by the support frame 23 during inspection.

[0046] In the prior art, electrical components and wiring terminals are usually placed together on a circuit board, and the electrical components are connected to external cables through the wiring terminals. During maintenance, the cables need to be connected at the wiring terminals of the circuit board. Figure 3 As shown, in some embodiments of the utility model, the electric control box 20 also includes a wiring terminal module 27 for connecting external cables, the first circuit board 21 and / or the second circuit board 22. The wiring terminal module 27 is connected to the box body 24 and is located on one side of the circuit board module. That is, the wiring terminal module 27 can be used to connect external cables, the first circuit board 21 or the second circuit board 22, and can also connect external cables, the first circuit board 21 and the second circuit board 22 at the same time. Specifically, the first circuit board 21 and the second circuit board 22 can be connected together by cables. The wiring terminal module 27 serves as a connection medium between the external cables and the circuit board module. The maintenance personnel only need to connect the cables at the wiring terminal module 27 to achieve the connection between the external cables and the electrical components on the first circuit board 21 and the second circuit board 22. In this way, it is convenient for the maintenance personnel to connect the cables to the circuit boards.

[0047] like Figures 5 to 7 In the illustrated embodiment, the fixing portion 231 is fixedly connected to the inner wall of the box body 24 and is located at the periphery of the first circuit board 21. That is, the fixing portion 231 is arranged along the outer contour line of the first circuit board 21. Specifically, as shown in FIG. Figure 4 As shown, the first circuit board 21 is rectangular in some embodiments, and the fixed portion 231 is arranged along the rectangular outline. The movable portion 232 is rotatably connected to the fixed portion 231 and is located on one side of the first circuit board 21. Specifically, the movable portion 232 is located on the outside of the first circuit board 21. The second circuit board 22 is connected to the movable portion 232, and the movable portion 232 can drive the second circuit board 22 to flip between the first position and the second position relative to the fixed portion 231. That is, the fixed portion 231 serves as a spacing medium between the first circuit board 21 and the second circuit board 22, so that the first circuit board 21 and the second circuit board 22 are spaced apart, and the position change of the second circuit board 22 can be achieved through the movable portion 232.

[0048] In some embodiments, the fixing portion 231 may be annular and surround the outer circumference of the first circuit board 21 . In this case, the fixing portion 231 is entirely disposed along the outer contour of the first circuit board 21 .

[0049] like Figure 4 and Figure 5 In the illustrated embodiment, the fixing portion 231 includes a first fixing member 2311 and a second fixing member 2312, and the first fixing member 2311 and the second fixing member 2312 are respectively fixedly connected to the inner wall of the box body 24. The first fixing member 2311 is arranged below the second fixing member 2312. The two first fixing members 2311 and the two second fixing members 2312 can be arranged at four points along the outer contour line of the first circuit board 21 on the periphery of the first circuit board 21. The first fixing member 2311 and the second fixing member 2312 can be respectively connected to the box body 24 in a detachable fixed connection (for example, a bolted connection) or a non-detachable fixed connection (for example, welding). Figure 4 The outer contour of the first circuit board 21 of the illustrated embodiment is rectangular and has a long side and a short side. A first fixing member 2311 and a second fixing member 2312 are spaced along one of the long sides on one side of the first circuit board 21, and another first fixing member 2311 and another second fixing member 2312 are spaced along the other long side on the other side of the first circuit board 21. The movable portion 232 also includes a first corner portion 2631 and a second corner portion 2632, and the first corner portion 2631 is arranged below the second corner portion 2632. The first corner portion 2631 is connected to the first fixing member 2311 through a rotating connection portion 262. When the second circuit board 22 is in the first position, the second corner portion 2632 is connected to the second fixing member 2312. When the second circuit board 22 is in the second position, the second corner portion 2632 is separated from the second fixing member 2312. The two first corner portions 2631 abut against the two first fixing members 2311, and form a stable abutting structure, so that the position of the second circuit board 22 remains stable during maintenance, which facilitates the maintenance of the first circuit board 21 and the second circuit board 22. It should be noted that the “corner” may be a straight line corner position of a rectangular contour, or an arc corner position of a curved contour such as a circle or an ellipse.

[0050] In other embodiments, the fixed portion 231 includes two fixing members, and the two fixing members are respectively arranged on opposite sides of the first circuit board 21. The movable portion 232 is connected to the two fixing members through the rotating connecting portion 262. When the second circuit board 22 is in the first position, one end of the movable portion 232 away from the fixing member is directly and detachably connected to the inner wall surface of the box body 24. When the second circuit board 22 is in the second position, one end of the movable portion 232 away from the fixing member is separated from the inner wall surface of the box body 24.

[0051] like Figures 4 to 7In the illustrated embodiment, the fixing portion 231 is provided with a slot 261, and the rotating connecting portion 262 is engaged with the slot 261. Figures 4 to 6 In the illustrated embodiment, the two first fixing members 2311 are respectively provided with a slot 261. Figure 7 As shown, the two first corner portions 2631 are respectively provided with a rotating connection portion 262, and the rotating connection portion 262 has a bent portion. Specifically, the rotating connection portion 262 includes a first portion and a second portion, and an angle is formed between the first portion and the second portion, the first portion is connected to the first corner portion 2631, and the second portion can extend into the card slot 261. The two rotating connection portions 262 are engaged with the two card slots 261 one by one. The design of the card slot 261 can not only realize the rotating connection between the first fixing member 2311 and the first corner portion 2631, but also facilitate the disassembly and assembly of the movable portion 232. Furthermore, the two second corner portions 2632 are respectively provided with notches 265. When the second circuit board 22 is in the first position, the two notches 265 are engaged with the two second fixing members 2312 one by one. Alternatively, in other embodiments, such as Fig. 9 As shown, the fixed portion 231 and the movable portion 232 at a side away from the rotating connection portion 262 can be fastened by screws.

[0052] like Figure 5 and Figure 7 In the illustrated embodiment, the movable portion 232 is annular and defines an opening 264, and the second circuit board 22 is partially exposed to the opening 264. Specifically, the edge area of ​​the second circuit board 22 is connected to the two first corners 2631 and the two second corners 2632 on the annular movable portion 232, and the middle area of ​​the second circuit board 22 is cooled through the opening 264.

[0053] Furthermore, if Figure 4 In the illustrated embodiment, the first circuit board 21 includes a third surface 213 disposed toward the second circuit board 22 and a fourth surface 214 disposed away from the second circuit board 22. The first power element 210 is disposed on the third surface 213. The circuit board module further includes a heat sink 25, which is located on the fourth surface 214 of the first circuit board 21, and the first circuit board 21 dissipates heat through the heat sink 25. The heat sink 25 may be a heat sink fin or may be in other shapes.

[0054] like Fig. 9 In the illustrated embodiment, the support structure is a box 28 .

[0055] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. An electric control box (20), characterized in that: include: Box (24); A circuit board module, the circuit board module comprising a first circuit board (21), a second circuit board (22) and a supporting structure; The first circuit board (21) is arranged inside the box (24); The supporting structure comprises a fixed portion (231) and a movable portion (232); the fixed portion (231) is arranged inside the box (24) and located outside the first circuit board (21); The second circuit board (22) is arranged on the movable part (232), the movable part (232) comprises a rotating connection part (262), the rotating connection part (262) is located at the lower side of the movable part (232), and the movable part (232) is connected to the fixed part (231) through the rotating connection part (262), so that the second circuit board (22) moves between the first position and the second position; When the second circuit board (22) is in the first position, the second circuit board (22) is arranged substantially parallel to the first circuit board (21); When the second circuit board (22) is in the second position, the second circuit board (22) and the first circuit board (21) are arranged at an angle.

2. The electric control box (20) according to claim 1, characterized in that: The fixing portion (231) is fixedly connected to the inner wall of the box body (24) and is located on the periphery of the first circuit board (21).

3. The electric control box (20) according to claim 1 or 2, characterized in that: The fixed portion (231) comprises a first fixing member (2311) and a second fixing member (2312), wherein the first fixing member (2311) and the second fixing member (2312) are respectively fixedly connected to the inner wall of the box body (24), and the movable portion (232) further comprises a first corner portion (2631) and a second corner portion (2632), wherein the first corner portion (2631) is connected to the first fixing member (2311) via the rotating connection portion (262); When the second circuit board (22) is in the first position, the second corner portion (2632) is connected to the second fixing member (2312); When the second circuit board (22) is in the second position, the second corner portion (2632) is separated from the second fixing member (2312).

4. The electric control box (20) according to claim 3, characterized in that: The second corner portion (2632) is provided with a notch (265); when the second circuit board (22) is in the first position, the notch (265) is engaged and connected with the second fixing member (2312).

5. The electric control box (20) according to claim 1, characterized in that: The fixing portion (231) is provided with a slot (261), and the rotating connection portion (262) is engaged and connected with the slot (261); And / or, the fixed portion (231) and the movable portion (232) are fastened together at a side away from the rotating connection portion (262) by means of screws.

6. The electric control box (20) according to claim 1, characterized in that: The movable portion (232) is annular and defines an opening (264), and a portion of the second circuit board (22) is exposed in the opening (264); And / or, the first circuit board (21) comprises a third surface (213) arranged toward the second circuit board (22) and a fourth surface (214) arranged away from the second circuit board (22), the third surface (213) being used for mounting the first power element (210); the circuit board module further comprises a heat sink (25), the heat sink (25) being located on the fourth surface (214).

7. The electric control box (20) according to claim 1, characterized in that: The electric control box (20) further comprises a wiring terminal module (27) for connecting external cables, the first circuit board (21) and / or the second circuit board (22); the wiring terminal module (27) is connected to the box body (24) and is located on one side of the circuit board module.

8. The electric control box (20) according to claim 1, characterized in that: The first circuit board (21) is provided with a first power element (210), the second circuit board (22) is provided with a second power element (220), the operating power of the first power element (210) is less than the operating power of the second power element (220); the housing (24) is provided with an inspection port (240), and when the second circuit board (22) is in the first position, the second circuit board (22) is closer to the inspection port (240) than the first circuit board (21).

9. The electric control box (20) according to claim 1, characterized in that: The supporting structure is a supporting frame (23) or a box body (28).

10. A heat pump host, characterized in that: It comprises the electric control box (20) according to any one of claims 1 to 8.

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