An electric control box and a heat pump unit

Abstract

The application discloses an electric control box and a heat pump unit, and belongs to the field of air conditioning technology. The electric control box comprises a shell, an air cooling assembly, a first circuit board, a fluorine cooling assembly, and a second circuit board. The shell has a containing space, a first heat dissipation hole, and a second heat dissipation hole. The containing space is in communication with the outside of the shell through the first heat dissipation hole and the second heat dissipation hole. The edge of the first heat dissipation hole is provided with a folded edge extending to the outside of the shell. The air cooling assembly comprises an air cooling plate mounted on the folded edge and covering the first heat dissipation hole, and a radiator located outside the shell and mounted on the air cooling plate. The first circuit board is located in the containing space and mounted on the air cooling plate. The fluorine cooling assembly comprises a fluorine cooling plate mounted on the shell and covering the second heat dissipation hole, and a refrigerant pipeline located outside the shell and mounted on the fluorine cooling plate. The second circuit board is located in the containing space and mounted on the fluorine cooling plate. The application can reduce the production cost and improve the production and assembly efficiency.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and more particularly to an electrical control box and a heat pump unit. Background Technology

[0002] In today's context of diversified energy demands and increasingly stringent requirements for energy conservation and environmental protection, heat pump units have been widely used in the cooling and heating fields due to their significant advantages such as high efficiency, energy saving, and environmental friendliness. They can flexibly and efficiently provide cooling or heating functions according to changes in ambient temperature, creating a comfortable living and working environment for people, and playing an indispensable role in commercial buildings, residences, and industrial sites.

[0003] As one of the core components of a heat pump unit, the electrical control box plays a crucial role. It not only serves as a platform for important functional components such as circuit boards, but also ensures the stable operation and safety of these components. The circuit board, acting as the "brain" of the heat pump unit, precisely controls the coordinated operation of all components, ensuring the stable transmission of electrical signals and power. Therefore, the performance of the electrical control box directly affects the overall performance and lifespan of the heat pump unit.

[0004] To improve the performance and extend the lifespan of heat pump units, the current common heat dissipation method for the control box is a combination of refrigerant cooling and air cooling to dissipate heat from the circuit board. The control box housing is usually mounted on a partition plate. To avoid screws and other fasteners, a certain gap needs to be left between the housings. However, this design brings a series of problems to the installation of the air-cooled components. According to the existing installation process, the air-cooled components need to be pre-installed on the partition plate so that the radiator is located inside the air cavity of the heat pump unit. However, the partition plate is installed during the final assembly stage, that is, after the control box is assembled, the partition plate is then fully installed with the control box. The pre-installation wiring of the air-cooled components is greatly affected, increasing the complexity and difficulty of the installation. First, from the perspective of material costs, additional sheet metal and other materials are needed to install the air-cooling components, leading to increased production costs. Second, the air-cooling components are installed on the partition plate, while the refrigerant-cooled components are installed on the casing of the electrical box. From the perspective of installation procedures, this increases the number of installation steps and extends the production cycle. In terms of production efficiency, the air-cooling and refrigerant-cooling components need to be wired separately, making it impossible to achieve centralized and efficient wiring operations. This severely restricts the improvement of production and assembly efficiency and makes it difficult to meet the needs of modern large-scale production. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide an electrical control box and a heat pump unit that can solve the above-mentioned problems existing in the prior art.

[0006] To achieve the above objectives, this application adopts the following technical solution: On the one hand, an electrical control box is provided, comprising: The housing has a receiving space, a first heat dissipation hole, and a second heat dissipation hole; the receiving space communicates with the outside of the housing through the first heat dissipation hole and the second heat dissipation hole, and the edge of the first heat dissipation hole is provided with a folded edge extending outward from the housing; The air-cooled assembly includes an air-cooled plate mounted on the folded edge and covering the first heat dissipation hole, and a heat sink located outside the housing and mounted on the air-cooled plate through the first heat dissipation hole; The first circuit board is located within the accommodating space and mounted on the air-cooling plate; The fluorine cooling assembly includes a fluorine cooling plate installed on the housing and covering the second heat dissipation hole, and a refrigerant pipeline located outside the housing and installed on the fluorine cooling plate through the second heat dissipation hole; as well as The second circuit board is located within the accommodating space and mounted on the fluoropolymer cooling plate.

[0007] Preferably, the housing includes a first plate and a second plate; the first heat dissipation hole is formed in the first plate, and the second heat dissipation hole is formed in the second plate; The folded edge has a first folding plate and a second folding plate; the first folding plate is connected to the second folding plate and is perpendicular to each other; the first folding plate is perpendicularly connected to the first plate body along the edge of the first heat dissipation hole; the second folding plate is parallel to the first plate body and has a connecting hole; the air-cooled plate is installed on the second folding plate by a first connecting fastener cooperating with the connecting hole.

[0008] Preferably, there are two folded edges, which are respectively located on opposite sides of the first heat dissipation hole, and the second fold plates of the two folded edges extend in a direction that approaches each other.

[0009] Preferably, the air-cooled plate is provided with a first board slot, and the first circuit board is installed in the first board slot; And / or, the fluoropolymer cooling plate is provided with a second plate slot, and the second circuit board is mounted in the second plate slot.

[0010] Preferably, the electrical control box further includes a wiring channel installed in the housing; the wiring channel is located within the accommodating space.

[0011] Preferably, the electrical control box further includes a wiring board, a terminal block, and wire clamps; the wiring board is installed on the housing, and the terminal block and the wire clamps are both installed on the wiring board.

[0012] Preferably, the electrical control box further includes a wiring beam installed in the accommodating space; one end of the wiring beam is installed on the inner wall of the housing, and the other end of the wiring beam is installed on the terminal block.

[0013] Preferably, the housing is provided with a locking hole, one end of the cable routing beam is provided with a locking plate and is installed in the housing by the locking plate engaging with the locking hole, and the other end of the cable routing beam is installed in the terminal block by a second connecting fastener.

[0014] Preferably, the electrical control box further includes a reinforcing frame; the housing is integrally formed by sheet metal bending, and the first plate and the second plate are connected and perpendicular to each other; The first plate is provided with a sliding groove, and one end of the reinforcing frame is provided with a first hook. The first hook passes through the sliding groove and is suspended from the first plate. The other end of the reinforcing frame is connected to the second plate by a third connecting fastener.

[0015] On the other hand, a heat pump unit is provided, including a frame, a partition plate mounted on the frame, and the aforementioned electrical control box; the partition plate is provided with a clearance groove, the housing is provided with a second hook, the housing is suspended from the partition plate by the second hook and installed on the partition plate by a fourth connecting fastener, and there is an installation gap between the housing and the partition plate, the folded edge and the refrigerant pipeline are both located within the installation gap, a part of the folded edge abuts against the partition plate, the other part of the folded edge is located at the clearance groove and connected to the air-cooled plate, and the radiator passes through the installation gap and the clearance groove.

[0016] The beneficial effects of this application are as follows: By providing a flange extending outward from the housing, the heat sink of the air-cooled component is installed close to the partition plate of the heat pump unit and located within the air cavity of the heat pump unit after the flange is installed. The air-cooled component does not require additional sheet metal on the partition plate for pre-installation wiring, reducing the complexity and difficulty of installation and minimizing production cost increases. The air-cooled component and the refrigerant-cooled component are simultaneously installed on the electrical box housing, reducing installation steps and shortening the production cycle. Furthermore, the air-cooled component and the refrigerant-cooled component can be wired simultaneously, enabling centralized and efficient wiring operations, improving production assembly efficiency, and meeting the needs of modern large-scale production. Attached Figure Description

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a structural schematic diagram of the electrical control box from one perspective. Figure 2 A structural schematic diagram of the electrical control box from another perspective; Figure 3 An exploded view of the electrical control box; Figure 4 This is a schematic diagram showing the connection of the casing, air-cooled plate, radiator, reinforcement frame, and cable routing beam. Figure 5 Exploded view of the casing, air-cooled plate, radiator, reinforcement frame, and cable routing beam; Figure 6 This is a schematic diagram of the shell structure.

[0019] Explanation of reference numerals in the attached figures: 11. Housing; 12. Air-cooled plate; 13. Radiator; 14. Fluorine-cooled plate; 15. Refrigerant piping; 16. Folded edge; 17. Cable tray; 18. Terminal block; 19. Terminal block; 20. Cable clamp; 21. Reinforcing frame; 22. First hook; 23. Second hook; 24. Cable beam; 111. First plate; 112. Second plate; 113. Accommodation space; 114. First heat dissipation hole; 115. Second heat dissipation hole; 118. Locking hole; 119. Sliding groove; 121. First board slot; 141. Second board slot; 161. First folding plate; 162. Second folding plate; 163. Connection hole; 211. Wiring trough; 241. Pallet. Detailed Implementation

[0020] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "fixed," "linked," "communicated," "abutting," "clamping," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] Before discussing the exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe the operations (or steps) as sequential processes, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. The process can be terminated when its operation is completed, but it may also have additional steps not included in the figures. The process may correspond to a method, function, procedure, subroutine, subroutine, etc.

[0024] Unless otherwise stated or defined, the term "and / or" as used in this invention includes any and all combinations of one or more of the associated listed items.

[0025] For ease of description, the up and down directions mentioned below are... Figure 1 Its vertical direction is consistent with the horizontal direction mentioned below. Figure 1 Its left and right directions are consistent.

[0026] like Figures 1 to 6 As shown, this embodiment provides an electrical control box, including a housing 11, an air-cooled assembly, a first circuit board, a fluorine-cooled assembly, and a second circuit board.

[0027] The housing 11 has a receiving space 113, a first heat dissipation hole 114, and a second heat dissipation hole 115. The receiving space 113 is used to accommodate a circuit board, electronic components mounted on the circuit board, and other components. The receiving space 113 can communicate with the outside of the housing 11 through the first heat dissipation hole 114, and can also communicate with the outside of the housing 11 through the second heat dissipation hole 115. The edge of the first heat dissipation hole 114 has a folded edge 16 extending outwards from the housing 11. The folded edge 16 extends outwards from the receiving space 113, so that after the control box is mounted on the partition plate, the folded edge 16 approaches and abuts against the partition plate. Figure 1 For example, in a heat pump unit, the electrical control box is installed on the middle partition, which is located on the left side of the electrical control box. The left side of the middle partition is the air cavity of the heat pump unit, where a fan is provided to remove the heat from the radiator 13.

[0028] The air-cooled assembly includes an air-cooling plate 12 mounted on the flange 16 and covering the first heat dissipation hole 114, and a heat sink 13 located outside the housing 11 and mounted on the air-cooling plate 12 through the first heat dissipation hole 114. A first circuit board is located within the receiving space 113 and mounted on the air-cooling plate 12. The air-cooling plate 12 is sealed after being mounted on the flange 16 and covering the first heat dissipation hole 114. The first circuit board is mounted on the surface of the air-cooling plate 12 facing the receiving space 113, and the heat sink 13 is mounted on the surface of the air-cooling plate 12 facing the outside of the housing 11.

[0029] The air-cooled plate 12 can conduct heat, and can be used to transfer the heat from the first circuit board and the heat-generating electronic components on it to the heat sink 13. Since the outside of the housing 11 is a ventilation cavity, and since the folded edge 16 extends to the outside of the housing 11, the air-cooled plate 12 is installed after the folded edge 16, so that the heat sink 13 on the air-cooled plate 12 can be located outside the housing 11 and fall into the ventilation cavity, thus avoiding the situation where part of the heat sink 13 is located in the receiving space 113 of the housing 11 and cannot dissipate heat.

[0030] The fluorine cooling assembly includes a fluorine cooling plate 14 mounted on the housing 11 and covering the second heat dissipation hole 115, and a refrigerant pipe 15 located outside the housing 11 and mounted on the fluorine cooling plate 14 through the second heat dissipation hole 115. A second circuit board is located within the receiving space 113 and mounted on the fluorine cooling plate 14. Heat from the second circuit board is transferred to the refrigerant pipe 15 via the fluorine cooling plate 14. Fluorine cooling is achieved by circulating fluorine gas into the refrigerant pipe 15.

[0031] Thus, the air-cooled component and the refrigerant-cooled component of this application are simultaneously installed on the housing 11 of the electrical box, eliminating the need for additional sheet metal on the partition plate for pre-installation of the air-cooled component and wiring. This reduces installation steps, shortens the production cycle, lowers the complexity and difficulty of air-cooled component installation, and reduces production cost increases. Simultaneous installation of the air-cooled component and the refrigerant-cooled component on the housing 11 enables centralized and efficient wiring operations, improving production and assembly efficiency.

[0032] In one embodiment, the housing 11 includes a first plate 111 and a second plate 112. A first heat dissipation hole 114 is formed in the first plate 111, and a second heat dissipation hole 115 is formed in the second plate 112.

[0033] The folded edge 16 has a first folded plate 161 and a second folded plate 162. The first folded plate 161 is connected to the second folded plate 162 and is perpendicular to each other. The first folded plate 161 is perpendicularly connected to the first plate 111 along the edge of the first heat dissipation hole 114. The second folded plate 162 is parallel to the first plate 111 and has a connecting hole 163. The air-cooled plate 12 is installed on the second folded plate 162 through a first connecting fastener that engages with the connecting hole 163. The first connecting fastener is a screw, rivet, or other connecting fastener. The fluorine-cooled plate 14 is also installed on the housing 11 through a screw, rivet, or other connecting fastener. A portion of the second folded plate 162 is used to abut against the middle partition. A portion of the second folded plate 162 has a connecting hole 163 and is connected to the air-cooled plate 12 through the connecting hole 163. The air-cooled plate 12 is installed on the side of the second folded plate 162 near the first heat dissipation hole 114, so that after the air-cooled plate 12 is installed on the first circuit board, the first circuit board can be located within the receiving space 113.

[0034] Furthermore, there are two folded edges 16, which are respectively located on opposite sides of the first heat dissipation hole 114. The second fold plates 162 of the two folded edges 16 extend in a direction that approaches each other. The two sides of the air-cooled plate 12 in the horizontal direction are respectively installed on the two second fold plates 162. The air-cooled plate 12 and the two second fold plates 162 together cover the first heat dissipation hole 114 to form a seal, which improves the stability and sealing of the air-cooled plate 12 installation and solves the problem that the coexistence of the fluorine cooling component and the air-cooled component causes the housing 11 to have too much additional sheet metal and be too complicated.

[0035] Optionally, the air-cooled plate 12 is provided with a first plate slot 121, in which the first circuit board is mounted; the fluorine-cooled plate 14 is provided with a second plate slot 141, in which the second circuit board is mounted. Both the first and second circuit boards are mounted using screws or other fasteners, and the first plate slot 121 and the second plate slot 141 are used to achieve quick positioning of the first and second circuit boards.

[0036] In one embodiment, the electrical control box further includes a wiring trough 17 installed in the housing 11. The wiring trough 17 is located within the receiving space 113, which facilitates wiring and routing within the electrical control box, effectively organizes cable lines, ensures neat and tidy wiring, and prevents cable twisting and damage.

[0037] Optionally, the electrical control box also includes a terminal block 18, a terminal strip 19, and wire clamps 20. The terminal block 18 is mounted on the housing 11, and the terminal strip 19 and wire clamps 20 are both mounted on the terminal block 18. The electrical control box is designed with the terminal block 18 as an independent wiring area for the terminal strip 19, making the layout of the terminal strip 19 clearer, making wiring operations simpler and easier to maintain. Users can quickly connect by simply disassembling and assembling the terminal block 18, saving installation time.

[0038] Furthermore, the electrical control box also includes a cable routing beam 24 installed within the housing space 113. One end of the cable routing beam 24 is installed on the first plate 111 of the housing 11, and the other end is installed on the terminal block 18. The cable routing beam 24 can effectively organize the cable lines, ensuring neat and tidy wiring, while preventing cable twisting and damage.

[0039] This application, by setting up the wiring trough 17 and wiring beam 24, makes the wiring space design within the accommodating space 113 more reasonable, ensuring effective space utilization between internal components. The wiring trough 17 and wiring beam 24 can make the wiring more concentrated, reducing the number of sheet metal parts that users need to disassemble and assemble during use, and saving installation time.

[0040] In one embodiment, the housing 11 has a locking hole 118, and one end of the cable routing beam 24 has a locking plate 241, which is engaged with the locking hole 118 to be installed on the housing 11. The other end of the cable routing beam 24 is installed on the terminal block 18 by a second connecting fastener. The second connecting fastener is a screw, rivet, or other connecting fastener. There are two locking plates 241 and two locking holes 118, which correspond one-to-one, to prevent the cable routing beam 24 from rotating. The engagement reduces the number of screws and other fasteners, making installation more convenient and faster, and improving the installation efficiency of the cable routing beam 24.

[0041] In one embodiment, the electrical control box further includes a reinforcing frame 21. Both the housing 11 and the reinforcing frame 21 are L-shaped, and the reinforcing frame 21 can improve the strength of the housing 11. The housing 11 is integrally formed by bending sheet metal. The first plate 111 and the second plate 112 are connected and perpendicular to each other. The connection between the first plate 111 and the second plate 112 is rounded to reduce damage from impacts. The reinforcing frame 21 is provided with a wiring groove 211 to facilitate wiring.

[0042] The electrical control box of this application has a simple overall structure and adopts a modular design, which can be flexibly configured according to different needs. It makes efficient use of space, reducing the size and weight of the electrical control box, making the equipment more portable. Because the electrical control box can be pre-assembled in modules, its production and installation become more convenient, saving significant labor costs and installation time.

[0043] The first plate 111 has a sliding groove 119, and one end of the reinforcing frame 21 has a first hook 22 with a groove. The first hook 22 passes through the sliding groove 119 and is suspended from the first plate 111 by the groove, making installation more convenient and quick, and reducing the use of fasteners such as screws and rivets. The other end of the reinforcing frame 21 is connected to the second plate 112 by a third connecting fastener, which is a screw, rivet, or other fastener.

[0044] This embodiment also provides a heat pump unit, including a frame, a partition plate mounted on the frame, and an electrical control box according to any of the above embodiments. The electrical control box can be semi-open or fully enclosed. The partition plate has a clearance groove, allowing the radiator 13 to extend from the clearance groove into the air cavity on the left side of the partition plate. The partition plate is L-shaped and matches the first plate 111 and the second plate 112 of the housing 11. The housing 11 has a second hook 23, which suspends the housing 11 from the partition plate and is installed on the partition plate using a fourth connecting fastener. After the second hook 23 is suspended from the top of the partition plate, the fourth connecting fastener secures the second hook 23 to the partition plate. The electrical box is pre-installed using the second hook 23, achieving a hanging installation design, reducing costs and simplifying the installation process. This makes the pre-installation of the electrical control box more convenient and quick, eliminating the need for complex operating steps and enabling rapid installation, saving manpower and time. There is an installation gap between the housing 11 and the partition plate to facilitate the installation of screws on the partition plate. The folded edge 16 and part of the refrigerant piping 15 are located within the installation gap, and the refrigerant piping 15 can be connected to external refrigerant gas for heat dissipation. A portion of the folded edge 16 abuts against the middle partition, increasing the support strength between the housing 11 and the middle partition. Another portion of the folded edge 16 is located at the clearance groove and connects to the air-cooled plate 12. Part of the radiator 13 passes through the installation gap and the clearance groove, allowing the radiator 13 to use the airflow from the air chamber to carry away heat.

[0045] The heat pump unit of this application can greatly simplify the labor costs and installation time required in the workshop from pre-installation to installation, and adopts a modular installation method, which can be flexibly configured according to different needs. Not only is the structure simple and the space utilization rate large, but the internal electrical control box also includes a cable tray 17 and a cable beam 24, which can effectively organize the circuit, reduce the later maintenance costs, and indirectly improve the service life of the cables.

[0046] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. An electrical control box, characterized in that, include: The housing (11) has a receiving space (113), a first heat dissipation hole (114) and a second heat dissipation hole (115); the receiving space (113) communicates with the outside of the housing (11) through the first heat dissipation hole (114) and the second heat dissipation hole (115), and the edge of the first heat dissipation hole (114) is provided with a folded edge (16) extending to the outside of the housing (11); The air-cooled assembly includes an air-cooled plate (12) mounted on the folded edge (16) and covering the first heat dissipation hole (114), and a heat sink (13) located outside the housing (11) and mounted on the air-cooled plate (12) through the first heat dissipation hole (114). The first circuit board is located within the accommodating space (113) and mounted on the air-cooled plate (12); The fluorine cooling assembly includes a fluorine cooling plate (14) installed on the housing (11) and covering the second heat dissipation hole (115), and a refrigerant pipe (15) located outside the housing (11) and installed on the fluorine cooling plate (14) through the second heat dissipation hole (115); as well as The second circuit board is located within the accommodating space (113) and mounted on the fluorine cooling plate (14).

2. The electrical control box according to claim 1, characterized in that, The housing (11) includes a first plate (111) and a second plate (112); the first heat dissipation hole (114) is opened in the first plate (111), and the second heat dissipation hole (115) is opened in the second plate (112); The folded edge (16) has a first fold plate (161) and a second fold plate (162); the first fold plate (161) and the second fold plate (162) are connected and perpendicular to each other. The first fold plate (161) is perpendicularly connected to the first plate body (111) along the edge of the first heat dissipation hole (114). The second fold plate (162) is parallel to the first plate body (111) and has a connecting hole (163). The air-cooled plate (12) is installed on the second fold plate (162) through a first connecting fastener and the connecting hole (163).

3. The electrical control box according to claim 2, characterized in that, There are two folded edges (16) respectively located on opposite sides of the first heat dissipation hole (114), and the second fold plates (162) of the two folded edges (16) extend in a direction that approaches each other.

4. The electrical control box according to any one of claims 1 to 3, characterized in that, The air-cooled plate (12) is provided with a first board slot (121), and the first circuit board is installed in the first board slot (121); And / or, the fluorinated cooling plate (14) is provided with a second plate slot (141), and the second circuit board is mounted in the second plate slot (141).

5. The electrical control box according to any one of claims 1 to 3, characterized in that, It also includes a wiring channel (17) installed in the housing (11); the wiring channel (17) is located in the receiving space (113).

6. The electrical control box according to claim 1, characterized in that, It also includes a junction box (18), a terminal block (19), and a wire clamp (20); the junction box (18) is installed on the housing (11), and the terminal block (19) and the wire clamp (20) are both installed on the junction box (18).

7. The electrical control box according to claim 6, characterized in that, It also includes a wiring beam (24) installed in the accommodating space (113); one end of the wiring beam (24) is installed on the inner wall of the housing (11), and the other end of the wiring beam (24) is installed on the terminal block (18).

8. The electrical control box according to claim 7, characterized in that, The housing (11) is provided with a locking hole (118), and one end of the wiring beam (24) is provided with a locking plate (241) and is installed on the housing (11) by engaging the locking plate (241) with the locking hole (118). The other end of the wiring beam (24) is installed on the terminal block (18) by a second connecting fastener.

9. The electrical control box according to any one of claims 2 to 3, characterized in that, It also includes a reinforcing frame (21); the shell (11) is integrally formed by sheet metal bending, and the first plate (111) and the second plate (112) are connected and perpendicular to each other; The first plate (111) is provided with a sliding groove (119), and one end of the reinforcing frame (21) is provided with a first hook (22). The first hook (22) passes through the sliding groove (119) and is suspended on the first plate (111). The other end of the reinforcing frame (21) is connected to the second plate (112) by a third connecting fastener.

10. A heat pump unit, characterized in that, The device includes a frame, a partition plate mounted on the frame, and an electrical control box as described in any one of claims 1 to 9; the partition plate is provided with a clearance groove, the housing (11) is provided with a second hook (23), the housing (11) is suspended from the partition plate by the second hook (23) and installed on the partition plate by a fourth connecting fastener, and there is an installation gap between the housing (11) and the partition plate, the folded edge (16) and the refrigerant pipe (15) are both located within the installation gap, a part of the folded edge (16) abuts against the partition plate, and another part of the folded edge (16) is located at the clearance groove and connected to the air-cooled plate (12), and the radiator (13) passes through the installation gap and the clearance groove.

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