Electric control box, heat pump apparatus and hot water heating system

Abstract

Disclosed in the present application are an electric control box, a heat pump apparatus and a hot water heating system. The electric control box (400) comprises a box body (420), an electric control board (410) and a wiring assembly. A first accommodating cavity (401) and a second accommodating cavity (402) are respectively provided on two opposite sides of the box body (420), the electric control board (410) and an internal wiring base (450) being arranged in the first accommodating cavity (401), and an external wiring base (460) being provided in the second accommodating cavity (402); the external wiring base (460) is led out of the electric control box (400) by means of a second line (463), the second line (463) being used for connecting to an external apparatus; the box body (420) is provided with a first line outlet (4221), and the second line (463) passes out of the electric control box (400) from the first line outlet (4221); sealing members (470) are respectively provided between a first box cover (430) and the box body (400), between a second box cover (440) and the box body (400), and at the first line outlet (4221).

Description

Electrical control box, heat pump equipment and hot water heating system

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent applications filed on December 31, 2024, with application number 202411999496.8 entitled "Electrical Control Box, Heat Pump Equipment and Hot Water Heating System" and application number 202423322820.0 also entitled "Electrical Control Box, Heat Pump Equipment and Hot Water Heating System", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of household appliance technology, and in particular to an electrical control box, a heat pump device, and a hot water heating system. Background Technology

[0004] In related technologies, the internal and external wiring terminals in the electrical control components of heat pump water heaters and split air conditioners are usually installed separately. However, for integrated heat pump equipment, the internal space is relatively compact, and because integrated heat pump equipment needs to exchange heat with the low-temperature outdoor air, condensation is prone to occur, requiring high sealing and waterproofing. Therefore, the solution using related technologies is not suitable for integrated heat pump equipment. Summary of the Invention

[0005] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes an electrical control box that integrates the internal and external wiring terminals into one unit, providing better sealing and suitable for integrated heat pump equipment.

[0006] This application also proposes a heat pump device and a hot water heating system that includes the aforementioned electrical control box.

[0007] An electrical control box according to a first aspect embodiment of this application includes a box body, an electrical control board, and a wiring assembly. The box body has a first cover and a second cover on opposite sides, forming a first receiving cavity between the first cover and the box body, and a second receiving cavity between the second cover and the box body. The electrical control board is disposed within the first receiving cavity, and has multiple wiring terminals on the side facing the first cover. The wiring assembly includes an inner wiring socket and an outer wiring socket connected together. The inner wiring socket is disposed within the first receiving cavity, and the outer wiring socket is disposed within the second receiving cavity. The inner wiring socket and the wiring terminals are electrically connected via a first line, and the outer wiring socket is used to connect to an external second line. The box body has a first outlet for the second line to pass through, and sealing elements are respectively provided between the first cover and the box body, between the second cover and the box body, and at the first outlet.

[0008] The electronic control box according to the embodiments of this application has at least the following beneficial effects:

[0009] A first receiving cavity and a second receiving cavity are respectively provided on opposite sides of the box body. The control board and the internal terminal block are placed in the first receiving cavity. The internal terminal block and the wiring terminals of the control board are electrically connected through a first line, which has a short wiring length. The external terminal block is placed in the second receiving cavity. The external terminal block is led out of the control box through a second line. The second line is used to connect with external devices. A first outlet is provided on the box body. The second line passes through the control box from the first outlet. This allows the internal terminal block and the external terminal block to be integrated with the control box into one unit, resulting in a more compact structure. It eliminates the need to install the internal terminal block and the external terminal block separately, saving installation space. Furthermore, sealing elements are provided between the first cover and the box body, between the second cover and the box body, and at the first outlet, ensuring that the control box has good overall sealing performance, making it suitable for heat pump equipment.

[0010] According to some embodiments of this application, the sealing element between the first box cover and the box body is a first sealing ring, which is arranged along the periphery of the box body; one of the first box cover and the box body is provided with a first recess that matches the first sealing ring, and the other is provided with a first protrusion that is opposite to the first recess and abuts against the first sealing ring.

[0011] According to some embodiments of this application, the sealing element between the second cover and the box body is a second sealing ring. A groove is formed on the side of the box body away from the electronic control board. The groove is provided with a second recess that matches the second sealing ring along the circumferential direction of the groove opening. The second cover plate covers the groove and abuts against the second sealing ring to define the second receiving cavity.

[0012] According to some embodiments of this application, the inner wall of the groove is formed with the first outlet, and the sealing element at the first outlet is a first wire guide clip, which is sealed to the second line.

[0013] According to some embodiments of this application, the first outlet is a notch formed in the sidewall of the groove; the second cover includes a first plate and a second plate connected together, the first plate covering the groove and the second plate covering the notch;

[0014] The second sealing ring includes a first sealing section that seals with the first plate and a second sealing section that seals with the second plate, wherein the first sealing section and the second sealing section are integrally formed.

[0015] According to some embodiments of this application, some of the terminals are provided with a third line, the housing is provided with a second outlet for the third line to pass through, and the second outlet is provided with a second wire guide that is sealed and fitted with the third line.

[0016] According to some embodiments of this application, the first wire pass and the second wire pass each include a wire pass body. The wire pass body is provided with a wire pass groove for the wire to pass through. At least two sealing plates are provided at both ends of the wire pass groove. The adjacent sealing plates abut against each other. The wire can pass through the adjacent sealing plates and abut against the sealing plates.

[0017] According to some embodiments of this application, the electronic control board is provided with an electronic control element and a heat sink on the side facing the first box cover. The electronic control element includes a heating device, and the heat sink is connected to the electronic control board and abuts against the heating surface of the heating device.

[0018] The first box cover has a through hole, through which the heat sink protrudes and is at least partially exposed on the outside of the first box cover. A third sealing ring is provided between the heat sink and the first box cover.

[0019] According to some embodiments of this application, the heat sink, the electrical control board, and the inner terminal block are arranged sequentially from top to bottom along the height direction of the electrical control box, the outer terminal block is arranged opposite to the back of the inner terminal block, and the first outlet is located on the bottom side of the electrical control box.

[0020] A heat pump device according to a second aspect embodiment of this application includes a housing, a heat pump assembly, a fan, a piping assembly, and an electrical control box as described in the first aspect embodiment. The electrical control box is disposed within the air inlet cavity. The heat pump assembly includes a compressor, a first heat exchanger, and a second heat exchanger. The first heat exchanger is disposed within the housing and divides the inner cavity of the housing into an air inlet cavity and an air outlet cavity. The compressor and the second heat exchanger are disposed within the air inlet cavity. The second heat exchanger includes a refrigerant pipeline and a water pipeline. The refrigerant pipeline is connected to the compressor, the first heat exchanger, and the second heat exchanger to form a refrigerant circulation loop. The fan is disposed within the air outlet cavity. The piping assembly is disposed within the air inlet cavity and includes a water pump, an inlet pipe, and an outlet pipe connected to the water pipeline. The electrical control box is disposed within the air inlet cavity.

[0021] The heat pump device according to the embodiments of this application has at least the following beneficial effects:

[0022] The heat pump assembly, fan, piping assembly, and electrical control box are installed inside the housing. The inner cavity of the housing is divided into an air inlet chamber and an air outlet chamber by a first heat exchanger. The compressor, second heat exchanger, piping assembly, and electrical control box are located in the air inlet chamber, and the fan is located in the air outlet chamber. The second heat exchanger is connected to the compressor and the first heat exchanger through refrigerant piping to form a refrigerant circulation loop. The second heat exchanger is also connected to the inlet and outlet water pipes through water piping to form a water supply pipeline. Air is drawn in through the air inlet chamber, passes through the first heat exchanger, and is discharged from the air outlet chamber, enabling the first heat exchanger to exchange heat with the outdoor air. Because the internal and external wiring terminals are integrated with the electrical control box, the structure is more compact, eliminating the need for separate installation of the internal and external wiring terminals and saving installation space. Furthermore, seals are provided between the first cover and the housing, between the second cover and the housing, and at the first outlet, ensuring excellent sealing of the electrical control box as a whole and improving the operational reliability of the heat pump equipment.

[0023] According to some embodiments of this application, one side of the housing is provided with an opening and a panel that can be detachably covered by the opening;

[0024] According to some embodiments of this application, the electrical control box is rotatably connected to the housing, and the electrical control box can be flipped to move into the air inlet cavity through the opening, or to move out of the air inlet cavity through the opening to expose the compressor, the second heat exchanger, and the piping assembly.

[0025] According to some embodiments of this application, the housing includes a chassis, side panels, a top cover, and the panel, the side panels enclosing and defining the opening, and the chassis and the top cover being respectively connected to both ends of the side panels; the heat pump device further includes a hinge structure, and the electrical control box is rotatably connected to one of the chassis, the side panels, and the top cover through the hinge structure.

[0026] According to some embodiments of this application, the chassis is provided with a third outlet for the second line to pass through the housing, and the third outlet is provided with a sealing body that seals with the second line.

[0027] The hot water heating system according to a third aspect of this application includes the heat pump device described in the second aspect of the application.

[0028] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0029] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0030] Figure 1 is a schematic diagram of the structure of a heat pump device according to an embodiment of this application (panel removed);

[0031] Figure 2 is a schematic diagram of the structure of a heat pump device according to an embodiment of this application (the electrical control box is flipped outwards);

[0032] Figure 3 is a schematic diagram of the structure of a heat pump device according to an embodiment of this application (second box cover open);

[0033] Figure 4 is a schematic diagram of the structure of a heat pump device according to an embodiment of this application (wiring status of the electrical control box);

[0034] Figure 5 is a front view of the electrical control box according to an embodiment of this application;

[0035] Figure 6 is an exploded structural diagram of the first box lid and box body according to an embodiment of this application;

[0036] Figure 7 is an exploded structural diagram of the second box lid and box body according to an embodiment of this application;

[0037] Figure 8 is a schematic diagram of the cross-sectional structure along the AA direction in Figure 5;

[0038] Figure 9 is a magnified view of section B in Figure 8; and

[0039] Figure 10 is a magnified view of a portion of the box in Figure 7.

[0040] Reference numerals: Heat pump equipment 10; Housing 100; Air inlet chamber 101; Air outlet chamber 102; Opening 103; Chassis 110; Sealing body 111; Side plate 120; Top cover 130; Air inlet 131; Air outlet 132; Duct connector 133; Heat pump assembly 200; Compressor 210; First heat exchanger 220; First refrigerant pipeline 221; Second heat exchanger 230; Water pipeline 231; Second refrigerant pipeline 232; Fan 300; Electrical control box 400; first receiving cavity 401; second receiving cavity 402; electrical control board 410; electrical control component 411; inductor 4111; terminal block 412; third circuit 4121; box body 420; first groove 421; second outlet 4211; first protrusion 4212; second groove 422; first outlet 4221; stepped surface 4222; second recess 4223; lug 423; first cover 430; through hole 431; air duct 432; air inlet 433; air outlet 434; first recess 435; second cover 4 40; First plate 441; Second plate 442; Inner terminal block 450; Inner high-voltage terminal block 451; Inner low-voltage terminal block 452; First circuit 453; Outer terminal block 460; Outer high-voltage terminal block 461; Outer low-voltage terminal block 462; Second circuit 463; Seal 470; First sealing ring 471; Second sealing ring 472; First sealing section 4721; Second sealing section 4722; Third sealing ring 473; First wire pass 480; Wire pass body 481; Wire pass groove 482; Sealing plate 483; Second wire pass 490; Pipe assembly 500; Water pump 510; Inlet pipe 520; Outlet pipe 530; Hinged structure 600; First hinge 610; Second hinge 620; Radiator 700; Flange 710. Detailed Implementation

[0041] The embodiments of this application 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 application, and should not be construed as limiting this application.

[0042] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0043] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0044] In the description of this application, unless otherwise expressly defined, terms such as "setup," "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 application in conjunction with the specific content of the technical solution.

[0045] In related technologies, to save installation space, some heat pump water heaters integrate the refrigerant circulation loop and water pipes into a single unit, also known as an integrated heat pump device. It connects to the indoor unit via water pipes to supply domestic hot water and heating for the space. The electrical control box, refrigerant circulation loop, and water pipes are all housed in the same space, resulting in a compact internal structure. In this particular heat pump device, the electrical control box is located below the top cover and above the middle partition. Therefore, maintenance of the electrical control box requires removing the front panel, top cover, and left and right side panels, and then loosening the bolts securing the electrical control box to the middle partition before disassembling the control box itself. This presents an inconvenience for inspecting internal components; furthermore, most water circuit components are obstructed by the electrical control box, requiring significant side space for maintenance.

[0046] Other heat pump products use an integrated casing. When maintenance is required, the entire casing must be removed first, and then the electrical control box must be disassembled before the internal components can be inspected. The operation is also more cumbersome. Moreover, many components are located on both sides of the body, making it difficult to inspect them directly from the front. It is necessary to enter the sides of the body for inspection, and maintenance space must be reserved on both sides of the body.

[0047] Therefore, integrated heat pump equipment in related technologies all have certain requirements for the installation environment, requiring a certain amount of installation and maintenance space, either at the top or to the sides, thus occupying limited indoor space and restricting installation scenarios. Furthermore, since the evaporator needs to exchange heat with the outdoor environment, the heat pump equipment, as an outdoor unit, needs to be installed outdoors. If components such as the water system malfunction and require repair, complex procedures are needed to complete disassembly and repair, increasing costs. Especially for residents on higher floors, installers must work outdoors at heights for both installation and repair, resulting in high installation and maintenance costs and posing significant risks during the installation process.

[0048] Therefore, embodiments of this application propose a heat pump device 10, which adopts a flip-type electrical control box 400 structure, enabling quick operation to expose internal components and facilitating their maintenance. The heat pump device 10 will now be described with reference to specific embodiments.

[0049] Referring to FIG1, the heat pump device 10 of an embodiment of this application includes a housing 100, a heat pump assembly 200, and a fan 300. The housing 100 has an inner cavity, and the heat pump assembly 200 and the fan 300 are installed in the inner cavity. An opening 103 and a panel (not shown in the figure) are provided on the front side of the housing 100. The opening 103 communicates with the inner cavity, and the panel is detachably installed at the opening 103. The opening 103 is located on the front side of the housing 100, and the opening 103 can be opened or closed through the panel. In some embodiments, the panel and the housing 100 can be connected by a structure such as a snap fastener, screw, or lock, or they can be rotatably connected to the housing 100 by a hinge structure such as a hinge.

[0050] The heat pump assembly 200 includes a compressor 210, a first heat exchanger 220, a second heat exchanger 230, and a throttling component. The first heat exchanger 220 is located in the middle of the inner cavity of the housing 100 and is arranged vertically along the height direction of the housing 100. The first heat exchanger 220 divides the inner cavity of the housing 100 into an air inlet chamber 101 and an air outlet chamber 102. The air inlet chamber 101 is located to the right of the first heat exchanger 220, and the air outlet chamber 102 is located to the left of the first heat exchanger 220. The compressor 210 and the second heat exchanger 230 are located in the air inlet chamber 101, and the fan 300 is located in the air outlet chamber 102.

[0051] In one embodiment, the first heat exchanger 220 is an evaporator, and the second heat exchanger 230 is a plate heat exchanger. The evaporator includes a first refrigerant line 221, and the plate heat exchanger includes a second refrigerant line 232 and a water line 231. The plate heat exchanger is connected to the compressor 210 and the throttling device through the second refrigerant line 232, and the evaporator is connected to the compressor 210 and the throttling device through the first refrigerant line 221, forming a refrigerant circulation loop for refrigerant circulation.

[0052] Referring to Figure 2, the heat pump device 10 also includes a piping assembly 500, which is installed inside the air inlet chamber 101. The piping assembly 500 includes a water pump 510, an inlet pipe 520, and an outlet pipe 530. The inlet pipe 520 and the outlet pipe 530 are respectively connected to the water flow pipe 231. The water pump 510 can be installed on either the inlet pipe 520 or the outlet pipe 530 to form a water supply pipeline. During operation, the refrigerant output from the compressor 210 passes through a plate heat exchanger, where it exchanges heat with water. After throttling, it enters the evaporator, where it exchanges heat with air. Then, it returns to the compressor 210 to begin the next cycle. The water pump 510 drives cold water into the plate heat exchanger, allowing the water to exchange heat with the refrigerant, thereby producing hot water.

[0053] It should be noted that, referring to Figure 1, the top of the housing 100 is provided with an air inlet 131 and an air outlet 132. The air inlet 131 is connected to the air inlet chamber 101. The air inlet of the fan 300 faces the evaporator, and the air outlet of the fan 300 is connected to the air outlet 132. The air inlet 131 and the air outlet 132 are each provided with a duct connector 133. The air inlet 131 is connected to an air inlet pipe via the duct connector 133, and the air outlet 132 is connected to an air outlet pipe via the duct connector 133. Both the air inlet and outlet pipes are connected to the outdoor environment. Outdoor air enters the air inlet chamber 101 through the air inlet pipe and air inlet 131, exchanges heat with the evaporator, and then enters the air outlet chamber 102. Finally, it is discharged to the outdoor environment through the air outlet 132 and the air outlet pipe. By using the outdoor air as a heat source and extracting heat through a heat exchange process, hot water is heated. The arrows in Figure 1 indicate the directions of air intake and air exhaust, respectively.

[0054] It is understood that the heat pump device 10 in this application can provide hot water through the outlet pipe 530 for supplying domestic hot water and heating hot water. Alternatively, the outlet pipe 530 can be connected to a water tank to store the hot water for user use. The inlet of the inlet pipe 520 and the outlet of the outlet pipe 530 are both located on the chassis 110 of the housing 100 to avoid affecting the appearance of the structure from being visible from the front or side. Since the heat pump device 10 in this application has a relatively small heat load, in some embodiments, the heat pump device 10 can be linked with external devices such as a gas boiler, electric heater, or water tank to meet user needs.

[0055] The heat pump unit 10 can be installed indoors, specifically in basements, attics, garages, machine rooms, storage rooms, and other similar locations. This provides a wide range of installation options, eliminating the need for outdoor installations and avoiding the high costs, long installation times, and high risks associated with outdoor unit installations. Installation is not limited by the aesthetics of the building's exterior, installation regulations, or outdoor noise. Furthermore, the entire installation and maintenance process is conducted indoors, resulting in low costs and simple operation. During shutdown, it is unaffected by harsh outdoor environments, eliminating the need for extensive redundancy in the design of water supply pipes to prevent freezing and reducing manufacturing costs.

[0056] Referring to Figures 1 and 2, the heat pump device 10 of the embodiment also includes an electrical control box 400. The electrical control box 400 is used to electrically connect components such as the compressor 210, fan 300, water pump 510, sensor, and control valve. It can also be connected to external devices. For example, the water tank can be equipped with a switch valve. The electrical control box 400 can lead out a line and extend it to the outside of the housing 100 so that the line can be connected to the switch valve to realize the control of the switch valve.

[0057] Specifically, the control box 400 is located at the opening 103 of the housing 100. The control box 400 is rotatably connected to the housing 100. For example, the control box 400 is connected to the housing 100 by a hinge, allowing the control box 400 to rotate around the hinge position and flip over. In this way, the control box 400 can rotate towards the air inlet cavity 101 and move into the air inlet cavity 101 from the opening 103, so that the control box 400 is stored inside the housing 100. Alternatively, when the control box 400 is located inside the air inlet cavity 101, it can be flipped towards the outside of the housing 100, so that the control box 400 moves out of the air inlet cavity 101 from the opening 103.

[0058] It is understood that the electrical control box 400 in the embodiment is roughly rectangular. Since the electrical control box 400 is located in the air inlet cavity 101 near the opening 103, the electrical control box 400 can cover the air inlet cavity 101 at the opening 103. The compressor 210, plate heat exchanger, first refrigerant pipe 221, second refrigerant pipe 232, water inlet pipe 520, water outlet pipe 530 and water pump 510 are all arranged in the air inlet cavity 101.

[0059] Referring to Figure 2, in some embodiments, the compressor 210 is located near the back of the housing 100, the plate heat exchanger is fixedly connected to the side wall of the housing 100, the water pump 510 is located below the plate heat exchanger, and the first refrigerant line 221, the second refrigerant line 232 and the water flow line 231 are arranged according to the positions of the above-mentioned components. The above-mentioned components can be shielded by the electrical control box 400, and the panel covers the opening 103, thereby shielding the internal structure of the housing 100.

[0060] Referring to Figure 2, when the heat pump equipment 10 needs maintenance, simply open the panel and flip the control box 400 around the hinge position to move the control box 400 out of the air inlet cavity 101. This opens the air inlet cavity 101, exposing the compressor 210, the second heat exchanger 230, and the piping assembly 500. In other words, the user can see the internal piping assembly 500 and refrigerant circulation loop from the front of the housing 100. This facilitates operation during production, installation, commissioning, and maintenance, and also makes it easy to replace parts without disassembling the control box 400. Furthermore, moving the control box 400 out of the air inlet cavity 101 also facilitates wiring and maintenance of the control box 400. The operation is simple and quick, effectively improving work efficiency.

[0061] Considering that water supply lines are more prone to failure than refrigerant lines, in one embodiment, the piping assembly 500 is arranged in the air inlet chamber 101 near the opening 103. That is, along the front-rear direction of the housing 100, the piping assembly 500 is arranged in front of the refrigerant lines and the compressor 210, which makes it easier to inspect and maintain the piping assembly 500.

[0062] It should be noted that the fan 300 is located inside the air outlet cavity 102, spaced apart from the air inlet cavity 101. The fan 300 is exposed after opening the panel, facilitating maintenance. In some embodiments, the fan 300 can be connected to the housing 100 via a guide rail structure, making it easier to move the fan 300 out of the air outlet cavity 102 along the guide rail structure, further simplifying maintenance. The heat pump equipment 10, adopting the layout structure of the above embodiment, requires minimal space, eliminating the need for extensive installation and maintenance space on both sides of the unit. All maintenance can be completed on the front side of the housing 100, facilitating operation.

[0063] Referring to Figures 1 and 2, the housing 100 includes a chassis 110, a side panel 120, a top cover 130, and a panel. The side panel 120 defines an opening 103. The chassis 110 and the top cover 130 are respectively connected to the upper and lower ends of the side panel 120. The chassis 110, the side panel 120, the top cover 130, and the panel define the inner cavity. The air inlet 131 and the air outlet 132 are both located on the top cover 130.

[0064] Referring to Figure 2, in some embodiments, the control box 400 is rotatably connected to the side plate 120 via a hinge structure 600. The hinge is located on the right side of the opening 103, allowing the control box 400 to flip to the right and move out of the air inlet cavity 101. The hinge structure 600 can be a hinge, a hinge, or similar structure. Taking a hinge as an example, two hinges can be connected to both ends of the control box 400 along its height direction, and both hinges are connected to the side plate 120, thus enabling the control box 400 to flip.

[0065] Of course, the control box 400 is not limited to being hinged to the side panel 120. It can also be connected to the top cover 130 or the chassis 110 through the hinge structure 600. For example, the upper end of the control box 400 is hinged to the top cover 130 and can be flipped upward to open the air inlet cavity 101; or the lower end of the control box 400 is hinged to the chassis 110 and can be flipped downward to open the air inlet cavity 101.

[0066] In some embodiments, the hinge structure 600 includes a first hinge 610 and a second hinge 620. The first hinge 610 is fixedly connected to the side of the electrical control box 400, and the second hinge 620 is fixedly connected to the edge of the side plate 120. The first hinge 610 is provided with a bushing with a shaft hole, and the second hinge 620 is provided with a hinge shaft. The hinge shaft is inserted into the shaft hole, so that the first hinge 610 and the second hinge 620 can rotate relative to each other, thereby realizing the rotation of the electrical control box 400 around the hinge shaft.

[0067] Because the bushing and the hinge shaft are connected by a sleeve connection, the bushing can move upward to disengage from the hinge shaft, thereby separating the first hinge 610 and the second hinge 620, and realizing the disassembly and separation of the electrical control box 400 from the housing 100, facilitating the installation and removal of the electrical control box 400. In some other embodiments, a hinge shaft can be provided on the first hinge 610 and a bushing can be provided on the second hinge 620, which can also realize the disassembly and separation of the first hinge 610 and the second hinge 620.

[0068] Referring to Figures 1 and 2, in order to fix the electrical control box 400, in some embodiments, the right side of the electrical control box 400 is connected to the side plate 120 through the aforementioned hinge structure 600, and the left side of the electrical control box 400 is provided with a lug 423, which is located at the upper end of the electrical control box 400. When the electrical control box 400 is located in the air inlet cavity 101, it is connected to the top cover 130 through the lug 423, thereby fixing the electrical control box 400. Specifically, the lug 423 and the top cover 130 are respectively provided with connecting holes. Bolts are used to pass through the connecting holes of the lug 423 and the top cover 130 to fix the electrical control box 400 and prevent the electrical control box 400 from swinging during use.

[0069] Understandably, since the hinge structure 600 provides support and positioning for one side of the electrical control box 400, only one bolt is needed to fix the electrical control box 400 in this embodiment, improving maintenance efficiency. Of course, the lug 423 is not limited to being connected to the top cover 130 by bolts. For example, the lug 423 can be provided with a buckle, and the top cover 130 can be provided with a slot that matches the buckle, so as to achieve quick fixation through a snap-fit ​​method.

[0070] Furthermore, when the control box 400 is close to the chassis 110, the lug 423 can be installed at the lower end of the control box 400, and the lug 423 is connected to the chassis 110 by bolts or fasteners. The specific shape of the lug 423 can be selected according to the actual requirements of the product to meet the requirements for connection with the top cover 130 or the chassis 110.

[0071] The above are some examples of heat pump equipment 10. The following is a further explanation of the specific structure of the electrical control box 400.

[0072] In related technologies, the internal and external wiring terminals of heat pump water heaters and split air conditioners are usually installed separately. Taking a heat pump water heater as an example, the internal wiring terminal of the outdoor unit is located in the electrical control assembly, while the external wiring terminal is located on the outer casing. The outer casing has a corresponding outlet for the external wiring terminal, and the wiring for external devices is led out through the outlet. However, for integrated heat pump devices, the internal space is relatively compact, making the above-mentioned solution unsuitable. Moreover, the heat pump device 10 of this application is installed in an indoor environment. Because it needs to exchange heat with the cold outdoor air, the internal temperature of the heat pump device 10 will be lower than the room temperature, making it prone to condensation. This places high demands on the sealing and waterproofing requirements of the electrical control box 400. Therefore, the solution using related technologies is not suitable for the heat pump device 10 of this application.

[0073] Referring to Figures 5, 6, and 7, the electrical control box 400 includes an electrical control board 410, a box body 420, a first box cover 430, and a second box cover 440. The box body 420 has a first side and a second side arranged opposite to each other. The first side has a first groove 421, and the second side has a second groove 422. The first box cover 430 is disposed on the first side and covers the first groove 421, defining a first receiving cavity 401 between the first box cover 430 and the first groove 421. The second box cover 440 is disposed on the second side and covers the second groove 422, defining a second receiving cavity 402 between the second box cover 440 and the second groove 422. The electrical control board 410 is installed in the first receiving cavity 401. The box body 420 serves to fix the electrical control board 410 and protects the electrical control board 410 by enclosing it with the first box cover 430.

[0074] The control board 410 is equipped with electrical control components 411 and multiple wiring terminals 412. The electrical control components 411 and wiring terminals 412 are distributed on the side of the control box 400 facing the cover. The wiring terminals 412 are electrically connected to internal components such as the compressor 210, fan 300, water pump 510, sensors, and control valves, and can also be electrically connected to external devices, such as gas boilers, electric heaters, or water tanks. It is understood that the control box 400 also includes wiring assemblies. When the control board 410 is connected to external devices, some of the wiring terminals 412 of the control board 410 are electrically connected to the external devices through the wiring assemblies.

[0075] Specifically, the wiring assembly includes an inner terminal block 450 and an outer terminal block 460. The inner terminal block 450 is disposed within the first receiving cavity 401, and is arranged side by side with the control board 410. The outer terminal block 460 is disposed within the second receiving cavity 402. The inner terminal block 450 is electrically connected to the terminal block 412 via a first line 453. The outer terminal block 460 is provided with a second line 463, through which the control box 400 and the enclosure 100 are led out, and it is connected to external devices. The first line 453 and the inner terminal block 450 can be understood as the transition line between the control board 410 and the inner terminal block 450. The second line 463 connects to external devices to achieve linkage with the gas wall-hung boiler, electric heater, or water tank. The second line 463 may specifically include communication lines for connecting external devices such as temperature sensors and control valves, as well as the power cord of the heat pump device 10.

[0076] Understandably, the inner terminal block 450 and the outer terminal block 460 serve as wiring components between the control board 410 and external devices. The inner terminal block 450 and the outer terminal block 460 are installed together inside the control box 400. In other words, the inner terminal block 450 and the outer terminal block 460 are integrated with the control box 400, eliminating the need to install them separately. This results in a more compact structure and saves more installation space.

[0077] In some embodiments, the first cover 430 can be connected to the box body 420 by a snap-fit, or by bolts or other fixing methods. The second cover 440 can be connected to the box body 420 by a snap-fit ​​or bolt connection. This facilitates opening the first cover 430 and the second cover 440 to inspect and maintain the electrical control box 400.

[0078] Referring to Figure 3, when the electrical control box 400 is flipped and moved into the housing 100, the first cover 430 faces the air inlet cavity 101, and the second cover 440 faces the front of the housing 100. The second cover 440 can be exposed when the panel is opened, making it easy to open the second cover 440. After the second cover 440 is opened, the external wiring terminal 460 can be exposed, making it easy to wire and maintain the external wiring terminal 460.

[0079] Referring to Figure 4, when the electrical control box 400 is flipped out of the housing 100, the air inlet chamber 101 is opened to expose components such as the compressor 210, plate heat exchanger, and piping assembly 500. At this time, the first cover 430 is also exposed, making it easy to open the first cover 430. After the first cover 430 is opened, the electrical control board 410 and the internal wiring terminal 450 are exposed, making it easy to wire and repair the electrical control board 410 and the internal wiring terminal 450.

[0080] Understandably, some of the wiring terminals 412 are connected to the inner terminal block 450. In this embodiment, the control board 410 is located above the inner terminal block 450, and the two are arranged adjacent to each other. Therefore, the adapter line used is shorter, which facilitates wiring and makes the wiring more reasonable. Some of the wiring terminals 412 can be directly connected to components such as the compressor 210, fan 300, and sensors inside the housing 100. The wiring operation is also simple and does not require disassembling the control box 400.

[0081] It should be noted that in the embodiment, the box body 420 is connected to the housing 100 through the hinge structure 600. When the first box cover 430 and the second box cover 440 are opened, the connection between the box body 420 and the housing 100 can be maintained without disassembling the box body 420, the electrical control board 410, the inner terminal block 450 and the outer terminal block 460, which facilitates wiring and maintenance operations.

[0082] In some embodiments, the inner terminal block 450 and the outer terminal block 460 are arranged in a paired matching combination. That is, the number of inner terminal blocks 450 and outer terminal blocks 460 is the same and they are arranged one-to-one. Since the inner terminal blocks 450 and the outer terminal blocks 460 are arranged in opposite directions, the housing 420 can be provided with a through groove connecting the first groove 421 and the second groove 422. The outer terminal block 460 can pass through the through groove and connect to the inner terminal block 450. Specifically, it can be fixed by plugging or snapping, which is simple to assemble. Moreover, after the inner terminal block 450 and the outer terminal block 460 are assembled, the electrical connection between the inner terminal block 450 and the outer terminal block 460 can be realized through the metal conductive structure, without the need to run wires between the inner terminal block 450 and the outer terminal block 460.

[0083] It should be noted that the internal terminal block 450 includes an internal high-voltage terminal block 451 and an internal low-voltage terminal block 452, and the external terminal block 460 includes an external high-voltage terminal block 461 and an external low-voltage terminal block 462. The external high-voltage terminal block 461 is connected to the internal high-voltage terminal block 451, and the external low-voltage terminal block 462 is connected to the internal low-voltage terminal block 452. The external high-voltage terminal block 461 is used to connect power lines and other high-voltage lines, and the external low-voltage terminal block 462 is used to connect signal lines, control lines, and other low-voltage lines. It should also be noted that the external high-voltage terminal block 461 and the external low-voltage terminal block 462 can be distinguished by using sockets with different numbers of terminals, and the internal high-voltage terminal block 451 and the internal low-voltage terminal block 452 can also be distinguished by using sockets with different numbers of terminals, serving as a foolproof wiring mechanism.

[0084] Referring to Figure 6, a sealing element 470 is provided between the first lid 430 and the box body 420, which improves the sealing performance between the first lid 430 and the box body 420. Specifically, the sealing element 470 between the first lid 430 and the box body 420 is a first sealing ring 471. The first sealing ring 471 is arranged along the periphery of the first groove 421. When the first lid 430 covers the first groove 421, the edge of the first lid 430 abuts against the first sealing ring 471 to form a sealing structure, which can prevent moisture from entering the first receiving cavity 401.

[0085] In some embodiments, the first sealing ring 471 is rectangular, matching the shape of the first groove 421. The first sealing ring 471 is made of rubber, which has good sealing performance, or it can be silicone or other elastic sealing materials. The specific shape of the first sealing ring 471 can be selected according to the actual shape of the first groove 421 and the first cover 430. For example, the first sealing ring 471 can be square or other polygonal shapes.

[0086] Referring to Figures 8 and 9, in some embodiments, a first recess 435 is provided on the edge of the first lid 430 facing the box body 420. The first recess 435 is arranged circumferentially along the first lid 430. The first sealing ring 471 is accommodated in the first recess 435. A first protrusion 4212 is provided on the edge of the box body 420. After the first lid 430 and the box body 420 are assembled, the first protrusion 4212 enters into the first recess 435 and abuts against the first sealing ring 471. The first protrusion 4212 can press the first sealing ring 471 to achieve a better sealing effect.

[0087] The first recess 435 can be understood as an annular groove surrounding the first lid 430. A surrounding plate is provided on the outer periphery of the box body 420, and the end of the surrounding plate is formed as a first protrusion 4212. In other embodiments, the first recess 435 may be provided on the periphery of the box body 420, and the first protrusion 4212 may be provided on the periphery of the first lid 430. For example, the first recess 435 is formed on the end face of the surrounding plate facing the first lid 430, and the first protrusion 4212 is correspondingly matched with the first recess 435.

[0088] Referring to FIG7, a sealing element 470 is provided between the second cover 440 and the box body 420. The sealing element 470 is a second sealing ring 472, which can improve the sealing performance between the second cover 440 and the box body 420.

[0089] As can be understood, as shown in Figure 7, the groove on the side of the box body 420 facing away from the electronic control board 410 is the second groove 422. The second sealing ring 472 is arranged along the circumference of the second groove 422. When the second box cover 440 covers the second groove 422, the edge of the second box cover 440 abuts against the second sealing ring 472 to form a sealing structure, thereby preventing water vapor from entering the second receiving cavity 402.

[0090] Referring to Figures 8 and 10, in some embodiments, a second recess 4223 is provided on the end face of the box body 420 facing away from the first receiving cavity 401. The second recess 4223 is arranged around the groove of the second groove 422. The second sealing ring 472 is accommodated in the second recess 4223. After the second box cover 440 is assembled with the box body 420, the second box cover 440 abuts against the second sealing ring 472. The second box cover 440 can press the second sealing ring 472 tightly to achieve a better sealing effect.

[0091] In one embodiment, a stepped surface 4222 may be provided between the end face of the box body 420 and the second groove 422. The second recess 4223 may be an annular groove formed on the stepped surface 4222. The stepped surface 4222 matches the second box cover 440 so that when the second box cover 440 covers the second groove 422, it can be flush with the end face of the box body 420. That is, the second box cover 440 does not protrude from the surface of the box body 420, resulting in better sealing.

[0092] Referring to Figure 10, since the external terminal block 460 needs to be connected to external devices through the second line 463, a first outlet 4221 for the second line 463 to pass through is provided on the housing 420. In this embodiment, the first outlet 4221 is located on the side wall of the second groove 422, and a sealing element 470 is provided on the first outlet 4221. Specifically, a first wire guide clip 480 is used to seal the first outlet 4221, so that while the second line 463 is led out from the first outlet 4221, the first outlet 4221 can be ensured to have high sealing performance, preventing moisture from entering the electrical control box 400 through the first outlet 4221.

[0093] In one embodiment, the first cable outlet 4221 is a notch formed in the sidewall of the second groove 422, that is, the side of the first cable outlet 4221 facing the second cover 440 is an open structure, which facilitates the first cable clip 480 to be assembled into the first cable outlet 4221 through the open structure. In order to match the sealing structure of the second groove 422 and the notch, in this embodiment, the second cover 440 includes a first plate 441 and a second plate 442 connected together, wherein the first plate 441 covers the second groove 422 and the second plate 442 covers the notch, so that the second cover 440 can match the arrangement of the second groove 422 and the first cable outlet 4221.

[0094] It should be noted that, referring to Figure 7, the second sealing ring 472 includes a first sealing section 4721 and a second sealing section 4722. The shape and size of the first sealing section 4721 match the shape and size of the second groove 422, and the first sealing section 4721 cooperates with the first plate 441 to seal the second groove 422. The shape and size of the second sealing section 4722 match the shape and size of the notch, and the second sealing section 4722 cooperates with the second plate 442 to seal the first cable outlet, thereby ensuring better sealing at the first cable outlet 4221.

[0095] The material of the second sealing ring 472 can be rubber, silicone, or other elastic sealing materials. The first sealing section 4721 and the second sealing section 4722 adopt an integral molding structure. The specific shape of the first sealing section 4721 and the second sealing section 4722 can be selected according to the actual shape of the second groove 422 and the first outlet 4221 to match the structure of the second groove 422 and the first outlet 4221.

[0096] Referring to Figure 3, the chassis 110 is provided with a third cable outlet, through which the second cable 463 exits the housing 100. A sealing body 111 is provided at the third cable outlet to seal it. When the second cable 463 exits through the third cable outlet, it seals against the sealing body 111, ensuring a high level of airtightness and preventing indoor air from entering the housing 100, thus reducing condensation. In this embodiment, the sealing body 111 can be a sealing kit made of materials such as rubber or silicone. The sealing kit is fitted onto the second cable 463, maintaining tight contact and providing a superior sealing effect.

[0097] It should be noted that some of the wiring terminals 412 are equipped with a third line 4121. The control board 410 is electrically connected to the compressor 210, fan 300, sensor and other components in the housing 100 through the third line 4121. Therefore, the housing 420 is provided with a second outlet 4211 for the third line 4121 to pass through. A second wire guide 490 is provided in the second outlet 4211. The second wire guide 490 is used to seal the second outlet 4211, so that the third line 4121 can be led out from the second outlet 4211 while ensuring that the second outlet 4211 has a high degree of sealing and preventing moisture from entering the control box 400 through the second outlet 4211.

[0098] In some embodiments, the first wire guide 480 and the second wire guide 490 adopt the same structure to ensure that the wire outlet of the electrical control box 400 has better sealing performance. Referring to FIG10, taking the first wire guide 480 as an example, the first wire guide 480 includes a wire guide body 481. The wire guide body 481 is provided with a wire groove 482. Multiple sealing pieces 483 are respectively provided at both ends of the wire groove 482. The multiple sealing pieces 483 are arranged along the inner peripheral wall of the wire groove 482. Adjacent sealing pieces 483 abut against each other. The second line 463 can pass through the adjacent sealing pieces 483 and maintain abutment against the sealing pieces 483 to form an effective sealing structure.

[0099] It is understandable that the entire body 481 of the line card is made of an elastic material, such as rubber or silicone. The sealing sheet 483 has a certain elasticity. When the second line 463 passes through the adjacent sealing sheet 483, the sealing sheet 483 can deform and remain in contact with the second line 463, thus ensuring stable sealing performance.

[0100] Referring to Figure 10, the extension direction of the cable tray 482 is consistent with the extension direction of the first outlet 4221. In this embodiment, two first cable clips 480 can be provided at the first outlet 4221 to seal the high-voltage and low-voltage lines respectively. When the second line 463 passes through the first outlet 4221, the second line 463 enters the cable tray 482. The sealing plates 483 seal both ends of the cable tray 482, effectively preventing moisture from entering the electrical control box 400. The specific structure of the second cable clip 490 can refer to the structure of the first cable clip 480 described above. It should be noted that the specific number of the first cable clips 480 and the second cable clips 490 can be selected according to the number of the first outlet 4221 and the second outlet 4211.

[0101] The electronic control components 411 of the electronic control board 410 include a first heating device, which may be a rectifier bridge, a smart power module, an insulated gate bipolar transistor, etc. In this embodiment, the electronic control board 410 is also provided with a heat sink 700. The heat sink 700 is located on the side of the electronic control board 410 facing the cover and abuts against the heating surface of the first heating device. The heat sink 700 can remove the heat of the first heating device. The heat sink 700 may be a finned heat sink. The heat sink 700 may also contact two or more first heating devices at the same time for heat dissipation. For example, the rectifier bridge and the smart power module are arranged adjacent to each other, and the heat sink 700 contacts the heating surfaces of the rectifier bridge and the smart power module, so that the rectifier bridge and the smart power module can be cooled at the same time.

[0102] Referring to Figures 8 and 9, in some embodiments, the first cover 430 is provided with a through hole 431, the size of which matches the size of the heat sink 700, so that the heat sink 700 can pass through the through hole 431, and at least part of the heat sink 700 is exposed on the outside of the first cover 430. A third sealing ring 473 is provided between the radiator 700 and the first cover 430. Part of the structure of the radiator 700 is exposed through the through hole 431. A flange 710 is provided on the outer periphery of the side of the radiator 700 facing the electronic control board 410. The third sealing ring 473 is provided around the radiator 700 and one side of it abuts against the flange 710. When the first cover 430 and the box body 420 are assembled, the first cover 430 abuts against the other side of the third sealing ring 473 and presses the third sealing ring 473 tightly, thereby fixing the third sealing ring 473 and giving the radiator 700 and the first cover 430 a high degree of sealing, thereby improving the overall sealing of the electronic control box 400.

[0103] Understandably, when the control box 400 is located inside the air inlet cavity 101, both the first cover 430 and the radiator 700 face the air inlet cavity 101, and the side of the box body 420 facing away from the control board 410 faces the front of the enclosure 100. When the heat pump device 10 is working, outdoor air enters the air inlet cavity 101 and flows along the air inlet cavity 101 towards the evaporator. Some of the airflow passes through the radiator 700, thereby helping to improve the heat dissipation efficiency of the radiator 700.

[0104] In some embodiments, as shown in FIG8, the radiator 700 is disposed at the upper end of the electrical control box 400, and after the electrical control box 400 enters the air inlet cavity 101, the radiator 700 is positioned close to the air inlet 131, which is more conducive to airflow through the radiator 700 and results in better heat dissipation. It should be noted that the airflow carries away the heat from the radiator 700 and then exchanges heat with the evaporator, which can recover the heat carried away by the airflow and improve heating efficiency.

[0105] The embodiments of this application arrange the electronic control element 411, the wiring terminal 412 and the heat sink 700 on the side of the electronic control board 410 facing the first cover 430. This facilitates heat dissipation of the heat sink 700 and wiring of the wiring terminal 412. At the same time, it ensures that the wiring and the heat sink 700 are located on the same side of the electronic control board 410, without the need for special manufacturing processes, which facilitates production and manufacturing.

[0106] It should be noted that the electronic control component 411 also includes a second heat-generating device. This second heat-generating device is a non-encapsulated device that generates heat during operation and requires waterproof protection. Therefore, in some embodiments, the second heat-generating device is housed within the electronic control box 400, and an air duct 432 is provided on the electronic control box 400 to dissipate heat from the second heat-generating device. The second heat-generating device can be an inductor 4111 or other heat-generating devices.

[0107] Referring to Figures 6 and 8, the inductor 4111 is used as an example for explanation. The inductor 4111 is disposed on the side of the control box 400 facing the first cover 430. The air duct 432 is formed on the first cover 430. The first cover 430 is provided with an air inlet 433 and an air outlet 434, which are respectively connected to the air duct 432. The air inlet 433 is disposed facing the radiator 700, and the air outlet 434 is disposed on the side wall of the first cover 430. When the control box 400 is flipped into the air inlet cavity 101, the air outlet 434 faces the evaporator. At least part of the structure of the inductor 4111 is located in the air duct 432.

[0108] When the heat pump device 10 is working, outdoor air enters the air inlet cavity 101 and flows along the air inlet cavity 101 towards the evaporator. Part of the airflow passes through the radiator 700 and enters the air duct 432 through the air inlet 433, and flows along the air duct 432 towards the inductor 4111, and then is discharged from the air outlet 434. Referring to Figure 8, the direction indicated by the arrow in Figure 8 is the direction of airflow along the air duct 432.

[0109] It should be noted that, since the evaporator is close to the air outlet 434 of the air duct 432, the airflow in the air inlet chamber 101 accelerates the airflow velocity discharged from the air outlet 434 when it passes through the evaporator, creating a suction effect. Therefore, the airflow through the air duct 432 can improve the airflow of the inductor 4111. Moreover, since the air inlet 433 faces the heat sink 700, it can also accelerate the airflow through the heat sink 700, which is beneficial to improving the heat dissipation efficiency of the heat sink 700.

[0110] Embodiments of this application also provide a hot water heating system, including the heat pump device described in the above embodiments. The heat pump device 10 can be connected to external devices such as a gas-fired wall-hung boiler, an electric heater, or a water tank to form a hot water heating system, providing users with domestic hot water and heating hot water. The hot water heating system has all the beneficial effects of the heat pump device 10 described above.

[0111] Of course, this application is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An electrical control box, comprising: The box body has a first lid and a second lid on opposite sides, with the first lid forming a first receiving cavity and the second lid forming a second receiving cavity. An electronic control board is disposed within the first receiving cavity, and the side of the electronic control board facing the first cover has multiple wiring terminals; and A wiring assembly includes an inner terminal block and an outer terminal block connected to each other. The inner terminal block is disposed in the first receiving cavity, and the outer terminal block is disposed in the second receiving cavity. The inner terminal block is electrically connected to the terminal block via a first line, and the outer terminal block is used to connect to an external second line. The box body is provided with a first outlet for the second line to pass through, and sealing elements are respectively provided between the first box cover and the box body, between the second box cover and the box body, and at the first outlet.

2. The electrical control box according to claim 1, wherein, The sealing element between the first box cover and the box body is a first sealing ring, which is arranged along the periphery of the box body; one of the first box cover and the box body is provided with a first recess that matches the first sealing ring, and the other is provided with a first protrusion that is opposite to the first recess and abuts against the first sealing ring.

3. The electrical control box according to claim 1 or 2, wherein, The sealing element between the second cover and the box body is a second sealing ring. A groove is formed on the side of the box body away from the electronic control board. The groove has a second recess that matches the second sealing ring along the circumferential direction of the groove opening. The second cover plate covers the groove and abuts against the second sealing ring to define the second receiving cavity.

4. The electrical control box according to claim 3, wherein, The inner wall of the groove forms the first outlet, and the sealing element at the first outlet is a first wire guide clip, which is sealed to the second line.

5. The electrical control box according to claim 4, wherein, The first outlet is a notch formed in the sidewall of the groove; the second cover includes a first plate and a second plate connected together, the first plate covering the groove and the second plate covering the notch; and The second sealing ring includes a first sealing section that seals with the first plate and a second sealing section that seals with the second plate, wherein the first sealing section and the second sealing section are integrally formed.

6. The electrical control box according to claim 4 or 5, wherein, Some of the terminals are provided with a third line, and the box is provided with a second outlet for the third line to pass through. The second outlet is provided with a second wire guide that is sealed to the third line.

7. The electrical control box according to claim 6, wherein, The first wire pass and the second wire pass each include a wire pass body. The wire pass body is provided with a wire pass groove for the wire to pass through. At least two sealing plates are provided at both ends of the wire pass groove. The adjacent sealing plates abut against each other. The wire can pass through the space between the adjacent sealing plates and abut against the sealing plates.

8. The electrical control box according to any one of claims 1 to 7, wherein, The control board has an electronic control component and a heat sink on the side facing the first cover. The electronic control component includes a heating element, and the heat sink is connected to the control board and abuts against the heating surface of the heating element. The first box cover has a through hole, through which the heat sink protrudes and is at least partially exposed on the outside of the first box cover. A third sealing ring is provided between the heat sink and the first box cover.

9. The electrical control box according to claim 8, wherein, The heat sink, the electrical control board, and the inner terminal block are arranged sequentially from top to bottom along the height direction of the electrical control box. The outer terminal block is positioned opposite to the back of the inner terminal block, and the first cable outlet is located on the bottom side of the electrical control box.

10. A heat pump device, comprising: Box; A heat pump assembly includes a compressor, a first heat exchanger, and a second heat exchanger. The first heat exchanger is disposed inside the housing and divides the inner cavity of the housing into an air inlet cavity and an air outlet cavity. The compressor and the second heat exchanger are disposed in the air inlet cavity. The second heat exchanger includes a refrigerant pipeline and a water pipeline. The refrigerant pipeline, the compressor, the first heat exchanger, and the second heat exchanger are connected to form a refrigerant circulation loop. A fan is located inside the air outlet cavity; A piping assembly is disposed within the air inlet cavity, and the piping assembly includes a water pump, an inlet pipe, and an outlet pipe connected to the water flow pipeline; as well as The electrical control box according to any one of claims 1 to 9, wherein the electrical control box is disposed inside the air inlet cavity.

11. The heat pump device according to claim 10, wherein, The box body has an opening on one side and a removable panel covering the opening; as well as The electrical control box is rotatably connected to the housing. The electrical control box can be flipped to move into the air inlet cavity through the opening, or moved out of the air inlet cavity through the opening to expose the compressor, the second heat exchanger, and the piping assembly.

12. The heat pump device according to claim 11, wherein, The housing includes a chassis, side panels, a top cover, and the panel. The side panels surround and define the opening. The chassis and the top cover are respectively connected to the two ends of the side panels. The heat pump equipment also includes a hinge structure. The electrical control box is rotatably connected to one of the chassis, the side panels, and the top cover through the hinge structure.

13. The heat pump device according to claim 12, wherein, The chassis is provided with a third outlet for the second line to pass through the box, and the third outlet is provided with a sealing body that seals with the second line.

14. A hot water heating system, wherein, Includes the heat pump device as described in any one of claims 10 to 13.

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