Water tank assembly and multi-connected heat pump water heater

Abstract

The embodiment of the utility model provides a water tank assembly and a multi-connected heat pump water heater. The electric control box is arranged in the water tank and comprises a box body with a containing cavity, an electric control board and a wiring assembly, the electric control board and the wiring assembly are arranged in the containing cavity, and the wiring assembly at least comprises a host wire holder. The overall size of the water tank assembly is relatively small, and the installation space occupied by the water tank assembly can be reduced.

Description

Technical Field

[0001] This application relates to the technical field of water heaters, and particularly to a water tank assembly and a multi-connected heat pump water heater. Background Art

[0002] A multi-connected heat pump water heater is a heat pump water heater in which a heat pump main unit is connected to a plurality of water tank assemblies. An electric control box and a junction box with a terminal block are generally provided on the water tank assembly of the multi-connected heat pump water heater. The heat pump main unit and the electric control box are respectively electrically connected to the corresponding terminal blocks in the junction box through cables. However, the overall size of such a water tank assembly is relatively large, occupying more installation space. Summary of the Utility Model

[0003] In view of this, embodiments of this application are expected to provide a water tank assembly and a multi-connected heat pump water heater with a relatively small overall size.

[0004] To achieve the above object, an embodiment of this application provides a water tank assembly for a multi-connected heat pump water heater, including:

[0005] A water tank;

[0006] An electric control box disposed on the water tank, the electric control box includes a box body having a receiving cavity, an electric control board and a wiring assembly disposed in the receiving cavity, and the wiring assembly includes at least a main unit terminal block.

[0007] In one implementation, the electric control box further includes a protective box disposed in the receiving cavity, and the electric control board and the wiring assembly are disposed in the protective box.

[0008] In one implementation, the protective box is snap-connected to the box body.

[0009] In one implementation, the protective box has an installation opening communicating with the receiving cavity, the box body has an avoidance opening avoiding the installation opening, and the electric control box further includes a sealing rubber ring having a wire passing opening, and the sealing rubber ring is detachably disposed at the installation opening.

[0010] In one implementation, one side of the box body has an opening communicating with the receiving cavity, the electric control board and the wiring assembly are disposed on the side of the box body opposite to the opening, and the electric control box further includes a mounting bottom plate disposed on the outer surface of the water tank, and the box body is detachably connected to the mounting bottom plate, and the mounting bottom plate blocks the opening.

[0011] In one implementation, the mounting bottom plate is disposed on the top side of the water tank in the height direction.

[0012] In one embodiment, the box body has a flange located on a peripheral side of the opening and folded in a direction away from the opening, and the flange is detachably connected to the mounting base plate.

[0013] In one embodiment, the water tank has a recessed area, the mounting base plate has a raised portion matching the recessed area, and the raised portion extends into the recessed area.

[0014] In one embodiment, the electric control box further includes a grounding bracket, which is disposed on the outer surface of the box body and located on a side of the box body away from the water tank.

[0015] In one embodiment, the wiring assembly further includes at least one of an electric heating wiring seat and an expansion wiring seat disposed in the accommodating cavity.

[0016] Another embodiment of the present application provides a multi-connected heat pump water heater, including a heat pump main unit and a plurality of the water tank assemblies described above, wherein the main unit wiring socket of each of the water tank assemblies is electrically connected to the heat pump main unit via a cable.

[0017] The embodiment of the present application provides a water tank assembly and a multi-split heat pump water heater. The water tank assembly can eliminate the junction box in the related art by arranging a junction assembly having at least a host junction socket in the electric control box. Compared with the method of arranging the electric control box and the junction box at the same time in the related art, the space occupied by the junction box in the water tank assembly is reduced, thereby reducing the overall size of the water tank assembly, and further reducing the installation space occupied by the water tank assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a water tank assembly provided in an embodiment of the present application;

[0019] Figure 2 for Figure 1 A partial structural schematic diagram of a water tank assembly is shown;

[0020] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0021] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0022] Figure 5 for Figure 2 A schematic structural diagram of the water tank assembly from another perspective shown;

[0023] Figure 6 for Figure 5 A partial enlarged view of point C in the middle;

[0024] Figure 7 is Figure 1 a schematic structural diagram of the electric control box shown

[0025] Figure 8 is Figure 1 a schematic structural diagram of the electric control box shown, with the box body omitted in the figure

[0026] Description of the reference numerals in the drawings:

[0027] 10. Water tank; 20. Electric control box; 21. Box body; 21a. Opening; 21b. Card interface; 211. Flanging; 22. Electric control board; 23. Wiring assembly; 231. Main machine wiring seat; 232. Electric heating wiring seat; 233. Expansion wiring seat; 24. Protection box; 24a. Installation opening; 24b. Card slot; 241. First card connection part; 242. Installation part; 25. Sealing rubber ring; 25a. Wire passing opening; 25b. Open end; 251. Second card connection part; 26. Installation bottom plate; 27. Grounding bracket; 28. Pressure wire clamp; 30. Refrigerant pipe Specific embodiments

[0028] In the description of the embodiments of the present application, it should be noted that the term "height direction" is based on the attached Figure 1 orientation or positional relationship shown. These orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present application

[0029] The embodiments of the present application provide a multi-connected heat pump water heater, which includes a heat pump main machine and a plurality of water tank assemblies

[0030] Please refer to Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 8 , the water tank assembly includes a water tank 10 and an electric control box 20 arranged on the water tank 10. The electric control box 20 includes a box body 21 with an accommodation cavity and an electric control board 22 and a wiring assembly 23 arranged in the accommodation cavity. The wiring assembly 23 includes at least a main machine wiring seat 231

[0031] The water tank 10 is used to store domestic water

[0032] The electric control box 20 is used to install the electric control board 22 and the wiring assembly 23

[0033] The installation position of the electric control box 20 is not limited. Exemplarily, please refer to Figure 1, the electric control box 20 can be arranged on the top side of the water tank 10 in the height direction and located on the outer surface of the water tank 10. In some other embodiments, the electric control box 20 can also be arranged on other sides of the water tank 10, or can also be arranged inside the water tank 10.

[0034] The wiring assembly 23 is used for wiring of the electric control board 22, and the electric control board 22 and the wiring assembly 23 are electrically connected through a cable.

[0035] The electrical connection refers to a circuit connection with physical contact.

[0036] The main machine wiring seat 231 in the wiring assembly 23 is used for electrically connecting with the heat pump main machine, that is, the main machine wiring seats 231 of each water tank assembly are electrically connected with the heat pump main machine through a cable.

[0037] That the wiring assembly 23 includes at least the main machine wiring seat 231 means that the wiring assembly 23 can only be provided with the main machine wiring seat 231, or other wiring seats can be further provided in addition to the main machine wiring seat 231.

[0038] Exemplarily, please refer to Figure 7 and Figure 8 , the wiring assembly 23 can also include an electric heating wiring seat 232, that is, the electric heating wiring seat 232 is arranged in the accommodation cavity of the electric control box 20, and the electric heating wiring seat 232 is used for electrically connecting with the auxiliary electric heating module of the water tank 10, so that the water tank assembly realizes the electric heating function.

[0039] Exemplarily, please refer to Figure 7 and Figure 8 , the wiring assembly 23 can also include an expansion wiring seat 233, that is, the expansion wiring seat 233 is arranged in the accommodation cavity of the electric control box 20, and the expansion wiring seat 233 can be used for electrically connecting with the expansion module of the water tank 10. The type of the expansion module is not limited. For example, the expansion module can have a water tank temperature feedback function, can also have a power feedback function, and can also have a communication control function.

[0040] Figure 7 and Figure 8 The electric control box 20 is provided with both the electric heating wiring seat 232 and the expansion wiring seat 233. In some other embodiments, the electric control box 20 can also only have the electric heating wiring seat 232 without the expansion wiring seat 233, or can also only have the expansion wiring seat 233 without the electric heating wiring seat 232.

[0041] Please continue to refer to Figure 7 and Figure 8 , the electric control box 20 can also be provided with a wire pressing clip 28, and the wire pressing clip 28 is used for pressing and positioning the cables in the accommodation cavity, so that the cables are routed centrally, which is convenient for wire management.

[0042] The setting position of the wire pressing card 28 is not limited. Exemplarily, please refer to Figure 7 and Figure 8 , the wire pressing card 28 can be fixed in the accommodation cavity and is arranged on the side of the wiring assembly 23 facing away from the electric control board 22.

[0043] In the related art, for the water tank assembly of a multi-connected heat pump water heater, generally an electric control box and a wiring box are separately installed on the water tank. The wiring box is installed on one side of the electric control box, the electric control board is arranged in the electric control box, and the main machine wiring seat is arranged in the wiring box. Since it is necessary to set the electric control box and the wiring box at the same time, the overall size of the water tank assembly is relatively large and the occupied installation space is more.

[0044] However, for the water tank assembly of the present application, by arranging a wiring assembly 23 having at least a main machine wiring seat 231 in the electric control box 20, the wiring box can be cancelled. Compared with the method of setting the electric control box and the wiring box at the same time in the related art, the space occupied by the wiring box in the water tank assembly is reduced, so that the overall size of the water tank assembly can be reduced, and further the installation space occupied by the water tank assembly can be reduced.

[0045] In one embodiment, please refer to Figure 7 and Figure 8 , the electric control box 20 may further include a protective box 24 arranged in the accommodation cavity, and the electric control board 22 and the wiring assembly 23 are arranged in the protective box 24.

[0046] The connection manner between the protective box 24 and the box body 21 is not limited. For example, the protective box 24 and the box body 21 can be non-removably connected by means such as bonding, and the protective box 24 and the box body 21 can also be removably connected, such as by snap connection, or fastened and connected by fasteners such as screws and bolts.

[0047] Exemplarily, please refer to Figure 4 , Figure 5 , Figure 7 and Figure 8 , the protective box 24 has a plurality of first snap portions 241 arranged on the peripheral side of the protective box 24, and the box body 21 has snap interfaces 21b corresponding to the first snap portions 241 one by one. The protective box 24 and the box body 21 are snap-connected to improve the assembly efficiency and reduce the cost.

[0048] The electric control board 22 and the wiring assembly 23 can be fixed in the protective box 24 by means of fastening connection, or can be fixed in the protective box 24 by means such as snap connection.

[0049] The protective box 24 can be used to play a role in waterproof sealing. In addition, the protective box 24 can also be made of insulating materials such as plastics to play a certain role in anti-electricity protection.

[0050] Exemplarily, the protective box 24 can be made of V0 flame-retardant plastic.

[0051] Exemplarily, the box body 21 can be made of metal. For example, the box body 21 can be a sheet metal box body. The combination of the box body 21 made of metal and the protective box 24 made of plastic can play a dual role in fire prevention and explosion protection.

[0052] In one embodiment, please refer to Figure 4 , the protective box 24 can have an installation opening 24a communicating with the accommodation cavity. The box body 21 has an avoidance opening avoiding the installation opening 24a. The electronic control box 20 further includes a sealing rubber ring 25 having a wire passing opening 25a. The sealing rubber ring 25 is detachably arranged at the installation opening 24a.

[0053] The installation opening 24a can be used for wire passing and can also be used for installing the sealing rubber ring 25.

[0054] The avoidance opening is used to avoid the installation opening 24a so that the cable can pass through the box body 21 and the protective box 24.

[0055] The number of the installation openings 24a can be one or multiple. Exemplarily, please refer to Figures 4 to 6 , the protective box 24 has five installation openings 24a.

[0056] Exemplarily, please refer to Figure 4 , Figure 7 and Figure 8 , the protective box 24 has an installation cavity and an installation part 242 arranged on the outer peripheral side of the protective box 24. The installation opening 24a is arranged on the installation part 242. The installation part 242 protrudes from the box body 21 through the avoidance opening to facilitate wire management.

[0057] The sealing rubber ring 25 is used to seal the installation opening 24a. The detachable arrangement of the sealing rubber ring 25 at the installation opening 24a means that the sealing rubber ring 25 can be installed or not installed according to needs. When the sealing rubber ring 25 is installed at the installation opening 24a, the cable passes through the wire passing opening 25a. When the sealing rubber ring 25 is not arranged at the installation opening 24a, the cable directly passes through the installation opening 24a.

[0058] The connection manner between the sealing rubber ring 25 and the protective box 24 is not limited. Exemplarily, please refer to Figure 4 and Figure 6 , on the side wall of the installation opening 24a on the protective box 24, a clamping groove 24b communicating with the installation opening 24a is formed. The circumferential side of the sealing rubber ring 25 has a second clamping part 251. The sealing rubber ring 25 is fixed at the installation opening 24a by making the second clamping part 251 snap into the clamping groove 24b. In some other embodiments, the sealing rubber ring 25 can also be arranged on the box body 21.

[0059] The structure of the sealing rubber ring 25 is not limited. Exemplarily, please refer to Figure 6, the sealing rubber ring 25 can be formed with a wire passing opening 25a that can be expanded and an open end 25b communicating with the wire passing opening 25a. The cable can be snapped into the wire passing opening 25a from the open end 25b, so as to reduce the operation difficulty of passing the wire and improve the operation convenience. When the cable is snapped into the wire passing opening 25a, the shape and size of the wire passing opening 25a can be expanded. When the cable is taken out from the wire passing opening 25a, the wire passing opening 25a can return to its original state. That is to say, the sealing rubber ring 25 can generate a certain elastic deformation under the action of the cable, so that after the cable is snapped into the wire passing opening 25a, the cable can contact the side wall of the wire passing opening 25a to achieve a better sealing effect.

[0060] Please refer to Figure 2 and Figure 5 , a refrigerant pipe 30 is arranged on one side of the electronic control box 20. The refrigerant pipe 30 is used to convey refrigerant. Generally, the heat pump water heater uses refrigerants such as R22 and R290. The safety level of R22 is A1, which belongs to a non-combustible and non-explosive refrigerant. That is to say, when using a non-flammable refrigerant such as R22, the sealing rubber ring 25 can be not installed. While the safety level of R290 is A3, which belongs to a flammable refrigerant and is prone to explosion when contacting with an electric spark. Therefore, a sealing rubber ring 25 needs to be arranged at the installation opening 24a to seal the electronic control box 20 and prevent R290 from leaking into the accommodation cavity through the installation opening 24a and causing combustion and explosion. Therefore, the sealing rubber ring 25 is detachably arranged at the installation opening 24a, and it can be selected to install or not install the sealing rubber ring 25 according to the actual type of refrigerant used, thereby improving the versatility of the electronic control box 20.

[0061] In one embodiment, please refer to Figures 2 to 7 , an opening 21a communicating with the accommodation cavity can be arranged on one side of the box body 21. The electronic control board 22 and the wiring assembly 23 are arranged on the side of the box body 21 opposite to the opening 21a. The electronic control box 20 further includes an installation bottom plate 26 arranged on the outer surface of the water tank 10. The box body 21 is detachably connected to the installation bottom plate 26, and the installation bottom plate 26 blocks the opening 21a.

[0062] The opening 21a is used for disassembling and assembling the electronic control board 22 and the wiring assembly 23.

[0063] The installation bottom plate 26 is used for both closing the opening 21a and connecting the box body 21 and the water tank 10. That is to say, the box body 21 is arranged on the outer surface of the water tank 10 through the installation bottom plate 26, and the electronic control board 22 and the wiring assembly 23 are arranged on the side of the box body 21 opposite to the water tank 10.

[0064] The connection method between the installation bottom plate 26 and the water tank 10 is not limited. Exemplarily, the installation bottom plate 26 can be fixedly connected or clamped to the water tank 10.

[0065] The water tank 10 may be provided with a concave area formed by a depression, and the mounting base plate 26 may be provided with a protrusion matching the concave area, and the protrusion extends into the concave area. In other words, the mounting base plate 26 can play a positioning role in the connection between the mounting base plate 26 and the water tank 10 by making the protrusion extend into the concave area, so as to facilitate the installation of the mounting base plate 26.

[0066] The connection method between the box body 21 and the mounting base 26 is not limited. For example, please refer to Figure 2 , Figure 3 and Figure 7 The box body 21 has a flange 211 located on the peripheral side of the opening 21 a and folded away from the opening 21 a , and the flange 211 is detachably connected to the mounting base plate 26 .

[0067] That is, the flange 211 is used to connect the box body 21 and the mounting base 26. The flange 211 can be formed by folding, welding or riveting.

[0068] The flange 211 is folded in a direction away from the opening 21 a , which not only improves the connection stability between the flange 211 and the mounting base plate 26 , but also facilitates the connection and disassembly of the flange 211 and the mounting base plate 26 .

[0069] For example, the electric control box 20 is arranged on the top side of the water tank 10 in the height direction. Since the installation base plate 26 is used to close the opening 21a and connect the box body 21 and the water tank 10, the box body 21 connected to the installation base plate 26 is actually inverted on the installation base plate 26. If the external water drips onto the top of the box body 21, it cannot flow into the accommodating cavity from the top of the box body 21. At the same time, the electric control board 22 and the wiring assembly 23 are arranged on the side of the box body 21 opposite to the opening 21a. Therefore, the electric control board 22 and the wiring assembly 23 are actually located on the top side of the accommodating cavity in the height direction. Even if the external water penetrates into the accommodating cavity from the opening 21a under accidental circumstances, it is not easy to flow onto the electric control board 22 and the wiring assembly 23 to cause a short circuit between the electric control board 22 and the wiring assembly 23. Therefore, this arrangement can achieve a better waterproof effect. In one embodiment, please refer to Figure 1 , Figure 2 , Figure 7 The electric control box 20 may further include a grounding bracket 27 , which is disposed on the outer surface of the box body 21 and located on a side of the box body 21 away from the water tank 10 .

[0070] The grounding bracket 27 is used to ground the electric control board 22 . The grounding bracket 27 is arranged on the outer surface of the box body 21 , which can facilitate grounding.

[0071] For example, see Figure 2, the grounding bracket 27 can be connected to the side of the box body 21 facing away from the water tank 10 and bent towards the direction close to the water tank 10 to reduce the height dimension of the electric control box 20.

[0072] In the description of the present application, the description with reference to terms such as "in one embodiment", "in some embodiments", "in other embodiments", "in still other embodiments", or "exemplary", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the schematic expression of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine the different embodiments or examples described in the present application and the features of different embodiments or examples.

[0073] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application are all included in the protection scope of the present application.

Claims

1. A water tank assembly for a multi-connected heat pump water heater, characterized in that, include: Water tank; An electric control box is arranged on the water tank, and the electric control box includes a box body with a accommodating cavity, and an electric control board and a wiring assembly arranged in the accommodating cavity. The wiring assembly at least includes a main unit wiring socket, and the main unit wiring socket is used to electrically connect to the heat pump main unit of the multi-split heat pump water heater.

2. The water tank assembly according to claim 1, wherein, The electric control box also includes a protection box arranged in the accommodating cavity, and the electric control board and the wiring assembly are arranged in the protection box.

3. The water tank assembly according to claim 2, wherein The protection box is snap-connected with the box body.

4. The water tank assembly according to claim 2, characterized in that, The protective box has an installation opening connected to the accommodating cavity, the box body has an avoidance opening avoiding the installation opening, and the electric control box also includes a sealing rubber ring with a wire passing opening, and the sealing rubber ring is detachably arranged at the installation opening.

5. The water tank assembly according to any one of claims 1-4, characterized in that, One side of the box body has an opening connected to the accommodating cavity, the electric control board and the wiring assembly are arranged on the side of the box body opposite to the opening, the electric control box also includes a mounting base plate arranged on the outer surface of the water tank, the box body is detachably connected to the mounting base plate, and the mounting base plate covers the opening.

6. The water tank assembly according to claim 5, wherein, The mounting base plate is arranged on the top side of the water tank along the height direction.

7. The water tank assembly according to claim 5, characterized in that, The box body has a flange located at the peripheral side of the opening and folded in a direction away from the opening, and the flange is detachably connected to the mounting base plate.

8. The water tank assembly according to claim 5, wherein, The water tank has a concave area formed by a depression, and the mounting base plate has a convex portion matching the concave area, and the convex portion extends into the concave area.

9. The water tank assembly according to any one of claims 1-4, characterized in that, The electric control box further comprises a grounding bracket, which is arranged on the outer surface of the box body and located on a side of the box body away from the water tank.

10. The water tank assembly according to any one of claims 1-4, characterized in that, The wiring assembly also includes at least one of an electric heating wiring seat and an expansion wiring seat arranged in the accommodating cavity.

11. A multi-connected heat pump water heater, characterized in that, It comprises a heat pump host and a plurality of water tank assemblies according to any one of claims 1 to 10, wherein the host wiring socket of each water tank assembly is electrically connected to the heat pump host through a cable.

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