Hydraulic device and heat pump system

Abstract

The utility model belongs to the technical field of household appliances, and particularly relates to a hydraulic device and a heat pump system. The heat exchange assembly is arranged in the containing space and comprises an electric heater, and a connector is arranged at one end of the electric heater; one end of the supporting piece is rotationally connected with the connector, and the other end of the supporting piece is fixedly connected with the box body. The electric heater can be effectively positioned, and the possibility of cracking, inclining, loosening and other problems of the electric heater is reduced.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more specifically, to a hydraulic device and heat pump system. Background Technology

[0002] In related technologies, hydraulic devices used for centralized heating typically include a housing and heat exchange components such as electric heaters, water pumps, expansion tanks, and heat exchangers housed within the housing. The electric heater is first welded to one end of a sheet metal component, and then the end of the sheet metal component furthest from the electric heater is connected to other supports. However, the sheet metal component is difficult to position accurately during welding, leading to problems such as cracking, tilting, and loosening of the electric heater after installation due to stress. Summary of the Invention

[0003] The purpose of this application is to provide a hydraulic device and heat pump system that can effectively position an electric heater, reducing the possibility of problems such as cracking, tilting, and loosening of the electric heater.

[0004] The first aspect of this application provides a hydraulic device, comprising: a housing having a receiving space; a heat exchange assembly disposed in the receiving space, the heat exchange assembly including an electric heater, one end of the electric heater being provided with a connector; and a support member, one end of the support member being rotatably connected to the connector, and the other end of the support member being fixedly connected to the housing.

[0005] According to the hydraulic device of this application embodiment, by rotatably connecting one end of the support member to the connector of the electric heater and fixing the other end of the support member to the tank, the position of the electric heater in the tank can be effectively positioned, reducing the possibility of cracking, tilting, loosening and other problems caused by stress affecting the electric heater.

[0006] In addition, the hydraulic device according to this application may also have the following additional technical features:

[0007] In some embodiments of this application, the housing includes a bottom wall and a side wall forming a receiving space, the side wall surrounding the periphery of the bottom wall, and the support member includes a first support portion and a second support portion that are intersecting and arranged, the first support portion being rotatably connected to a connector, and the second support portion being fixedly connected to the side wall.

[0008] In some embodiments of this application, the connector includes a first bushing and a second bushing connected in sequence. The outer diameter of the second bushing is larger than that of the first bushing. The first bushing is connected to one end of the electric heater, and a gap is formed between the end face of the second bushing and one end of the electric heater. The end of the first support portion away from the second support portion is embedded in the gap and sleeved on the outer periphery of the first bushing.

[0009] In some embodiments of this application, the end of the first support portion away from the second support portion is provided with a notch-shaped groove, which can accommodate and support the first bushing.

[0010] In some embodiments of this application, the slot is an arc-shaped slot, and the inner diameter of the slot is greater than or equal to the outer diameter of the first bushing and less than the outer diameter of the second bushing.

[0011] In some embodiments of this application, the second support is provided with a positioning hole, and the second support is fixedly connected to the side wall through the positioning hole.

[0012] In some embodiments of this application, the hydraulic device further includes a buffer assembly, which includes a first buffer member and a second buffer member. The first buffer member is fitted to the bottom wall, and the second buffer member is disposed on the side of the first buffer member away from the bottom wall to form a first receiving cavity covering the outer periphery of the electric heater. The second buffer member is provided with a notch, and the end of the first support that is rotatably connected to the connector has a notch.

[0013] In some embodiments of this application, the heat exchange assembly further includes a heat exchanger, an expansion tank, a water pump, and a refrigerant pipeline; the buffer assembly further includes a third buffer, a fourth buffer, and a fifth buffer, which are respectively disposed on the side of the first buffer away from the bottom wall to form a second accommodating cavity covering the outer periphery of the heat exchanger, a third accommodating cavity covering the outer periphery of the expansion tank, and a fourth accommodating cavity covering the outer periphery of the refrigerant pipeline. The fifth buffer is also provided with a relief groove, from which at least a portion of the water pump extends.

[0014] In some embodiments of this application, the hydraulic device further includes a first fixed frame and a second fixed frame. One end of the first fixed frame is connected to the bottom wall, and the other end of the first fixed frame is provided with a first buffer and fixedly connected to the heat exchanger. One end of the second fixed frame is connected to the bottom wall, and the other end of the second fixed frame is provided with a first buffer and fixedly connected to the expansion tank.

[0015] A second aspect of this application provides a heat pump system including a hydraulic device as described in the embodiments of this application.

[0016] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0019] Figure 1 This is a schematic diagram of the structure of a hydraulic device according to an embodiment of this application;

[0020] Figure 2 for Figure 1 A schematic diagram of a partial structure of the hydraulic device shown at an angle;

[0021] Figure 3 for Figure 2 The schematic diagram of the support structure in the hydraulic device shown.

[0022] Figure 4 for Figure 1 The diagram shows the exploded structure of the hydraulic device.

[0023] Figure 5 for Figure 1 A partial structural diagram of the hydraulic device shown at another angle.

[0024] The labels in the attached diagram are as follows:

[0025] 100. Hydraulic devices;

[0026] 1. Box body; 11. Bottom wall; 12. Side wall;

[0027] 2. Heat exchange assembly; 21. Electric heater; 22. Connector; 221. First shaft sleeve; 222. Second shaft sleeve; 23. Heat exchanger; 233. First refrigerant port; 234. Second refrigerant port; 24. Expansion tank; 25. Water pump; 26. Air vent valve; 27. Inlet pipe; 28. Connecting pipe; 29. ​​Outlet pipe;

[0028] 3. Buffer assembly; 31. First buffer component; 32. Second buffer component; 321. Notch; 33. Third buffer component; 331. Clearance groove; 34. Fourth buffer component; 35. Fifth buffer component; 351. Clearance groove;

[0029] 4. Support component; 41. First support part; 411. Slot; 42. Second support part; 421. Positioning hole; 5. Electrical control box. Detailed Implementation

[0030] Exemplary embodiments of this application will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of this application and to fully convey the scope of this application to those skilled in the art.

[0031] It should be understood that the terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms “a,” “an,” and “described” as used herein may also include the plural forms. The terms “comprising,” “including,” “containing,” and “having” are inclusive and therefore indicate the presence of the stated features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not construed as requiring them to be performed in a particular order described or illustrated unless the order of performance is explicitly indicated. It should also be understood that additional or alternative steps may be used.

[0032] Although the terms second, first, etc., may be used in this document to describe multiple elements, components, regions, layers, and / or segments, these elements, components, regions, layers, and / or segments should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or segment from another. Unless the context clearly indicates otherwise, terms such as "second," "first," and other numerical terms used herein do not imply order or sequence. Therefore, the second element, component, region, layer, or segment discussed below may be referred to as the first element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0033] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0034] This application provides a heat pump system including a hydraulic device. The heat pump system may include, but is not limited to, heat pump water heaters, heat pump air conditioners, heat pump underfloor heating, and heat pump multi-generation systems (e.g., combined air conditioning and underfloor heating, or combined air conditioning, underfloor heating, and hot water). The heat pump system is equipped with a water circulation pipeline. The main function of the hydraulic device is to exchange heat with the water from the water circulation pipeline to obtain hot or cooling water. The water after heat exchange is then transported through the water circulation pipeline to a water storage device such as a water tank in the heat pump system, or to terminals such as fan coil units, underfloor heating pipes, and radiators.

[0035] Figure 1 This is a schematic diagram of the structure of a hydraulic device according to an embodiment of this application. Figure 2 for Figure 1 The diagram shows a partial structural schematic of the hydraulic device at one angle.

[0036] See Figure 1 and Figure 2 This application provides a hydraulic device 100, including a housing 1, a heat exchange component 2, and a support component 4.

[0037] The box 1 has a storage space, and the box 1 can be any one of a hollow cylinder, cuboid, or polygon.

[0038] The heat exchange assembly 2 is disposed in the receiving space. The heat exchange assembly 2 includes an electric heater 21, one end of which is provided with a connector 22. The connector 22 is used to connect to an exhaust valve 26 to discharge gas from the electric heater 21 and release pressure.

[0039] One end of the support member 4 is rotatably connected to the connector 22, and the other end of the support member 4 is fixedly connected to the housing 1. Optionally, the support member 4 is a sheet metal part, formed by stamping, which facilitates mass production. In related technologies, the electric heater is generally welded to one end of the sheet metal part first, and then the end of the sheet metal part away from the electric heater is connected to the bracket. However, the sheet metal part is not easy to position accurately during welding, which can cause the electric heater to crack, tilt, loosen, or leak due to stress after installation.

[0040] Therefore, in this embodiment, one end of the support member 4 is connected to the connector 22 of the electric heater 21, and then the support member 4 is rotated so that the other end of the support member 4 is close to the housing 1. Then, the other end of the support member 4 is fixedly connected to the housing 1. Optionally, the other end of the support member 4 can be fixedly connected to the side wall 12 by screws, pins, etc., making the assembly method simple and reliable. Since the support member 4 can effectively position the electric heater 21 in the housing 1, and the end of the support member 4 connected to the connector 22 of the electric heater 21 is a movable connection, the electric heater 21 will not be affected by stress after installation, thus preventing cracking, tilting, loosening, and other problems, thereby improving the assembly reliability of the electric heater 21.

[0041] According to the hydraulic device 100 of this application embodiment, by rotatably connecting one end of the support member 4 to the connector 22 of the electric heater 21 and fixing the other end of the support member 4 to the housing 1, the possibility of cracking, tilting, loosening, or other problems caused by stress affecting the electric heater 21 can be reduced.

[0042] Figure 3 for Figure 2 The diagram shows the structural schematic of the support component in the hydraulic device.

[0043] In some embodiments, the housing includes a bottom wall 11 and a side wall 12 forming a receiving space. The side wall 12 surrounds the periphery of the bottom wall 11. The support member 4 includes a first support portion 41 and a second support portion 42 that are intersecting. The first support portion 41 is rotatably connected to the connector 22, and the second support portion 42 is fixedly connected to the side wall 12.

[0044] See Figure 2 and Figure 3 In this embodiment, the housing 1 is a cuboid, including a bottom wall 11 and four side walls 12 arranged around the periphery of the bottom wall 11. The housing 1 also includes a cover plate (not shown in the figure), which can be opened and closed to cover the receiving space, facilitating the removal of the cover plate to repair the internal components of the housing 1. Exemplarily, the first support part 41 and the second support part 42 are arranged perpendicular to each other, facilitating processing by bending. The first support part 41 is rotatably connected to the connector 22, and the second support part 42 is fixedly connected to the side wall 12.

[0045] In some embodiments, the connector 22 includes a first bushing 221 and a second bushing 222 connected in sequence. The outer diameter of the second bushing 222 is larger than the outer diameter of the first bushing 221. The first bushing 221 is connected to one end of the electric heater 21, and a gap is formed between the end face of the second bushing 222 and one end of the electric heater 21. The end of the first support portion 41 away from the second support portion 42 is inserted into the gap and sleeved on the outer periphery of the first bushing 221.

[0046] like Figure 2 As shown, the connector 22 includes a first bushing 221 and a second bushing 222 arranged in a stepped manner. The first bushing 221 is connected to one end of the electric heater 21, and the second bushing 222 is connected to the exhaust valve. A gap is formed between the end face of the second bushing 222 and one end of the electric heater 21. The end of the first support portion 41 away from the second support portion 42 can be inserted into the gap and sleeved on the outer periphery of the first bushing 221, so that one end of the first support portion 41 can rotate relative to the first bushing 221.

[0047] In some embodiments, the first support portion 41 is provided with a notch-shaped groove 411 at one end away from the second support portion 42, the groove 411 being able to accommodate and support the first bushing 221.

[0048] like Figure 3 As shown, the first support part 41 is an L-shaped sheet metal part with a certain length. A slot 411 is provided on one side of the L-shaped sheet metal part, and the other side is bent, which increases the rigidity and strength of the first support part 41. The width of the notch is greater than the outer diameter of the first bushing 221, allowing the end of the first support part 41 away from the second support part 42 to enter the slot 411 through the notch, facilitating assembly and disassembly. The shape of the slot 411 can be a rectangular slot, an arc-shaped slot, a triangular slot, etc., as long as it can accommodate and support the first bushing 221.

[0049] In some embodiments, the slot 411 is an arc-shaped slot, and the inner diameter of the slot 411 is greater than or equal to the outer diameter of the first bushing 221 and less than the outer diameter of the second bushing 222.

[0050] like Figure 2 and Figure 3 As shown, exemplarily, the groove 411 of the first support part 41 is an arc-shaped groove. The central angle of the arc-shaped groove can be a semi-circular groove of 180°, or the central angle of the arc-shaped groove can be greater than 180°. The inner diameter of the groove 411 can be greater than or equal to the outer diameter of the first bushing 221, and smaller than the outer diameter of the second bushing 222. This can restrict the first support part 41 from moving out axially, improving the connection stability between the first support part 41 and the connector 22.

[0051] In some embodiments, the second support portion 42 is provided with a positioning hole 421, and the second support portion 42 is fixedly connected to the side wall 12 through the positioning hole 421.

[0052] like Figure 3 As shown, the second support part 42 is a flat plate, which is convenient to fit against the side wall 12. Fasteners such as screws and pins pass through the positioning holes 421 and are fixedly connected to the side wall 12.

[0053] Figure 4 for Figure 1 The diagram shown is an exploded view of the hydraulic device. Figure 5 for Figure 1 A partial structural diagram of the hydraulic device shown at another angle.

[0054] In some embodiments, the hydraulic device 100 further includes a buffer assembly 3, which includes a first buffer member 31 and a second buffer member 32. The first buffer member 31 is fitted to the bottom wall 11, and the second buffer member 32 is disposed on the side of the first buffer member 31 away from the bottom wall 11 to form a first accommodating cavity covering the outer periphery of the electric heater 21. The second buffer member 32 is provided with a notch 321, and the notch 321 is provided through one end of the first support portion 41 that is rotatably connected to the connector 22.

[0055] Optionally, the buffer component 3 is made of cushioning materials such as foam or thermoplastic polyurethane (TPU). The buffer component 3 can buffer the vibration and impact on the electric heater 21 during transportation, preventing the electric heater 21 from tilting or loosening and causing water leakage. On the other hand, it can also provide good heat preservation for the electric heater 21.

[0056] like Figure 4 and Figure 5 As shown, the projected area of ​​the first buffer member 31 on the bottom wall 11 is the same as the area of ​​the bottom wall 11, thus restricting the movement of the first buffer member 31 within the housing 1 along the plane containing the bottom wall 11. A first groove adapted to a portion of the outer surface of the electric heater 21 is formed on the side of the first buffer member 31 facing away from the bottom wall 11. A second groove adapted to another portion of the outer surface of the electric heater 21 is formed on the side of the second buffer member 32 facing the first buffer member 31. The first groove and the second groove form a first accommodating cavity covering the outer periphery of the electric heater 21. The notch 321 of the second buffer member 32 prevents interference with the structure of the first support part 41 and also limits the position of the first support part 41 after installation.

[0057] In some embodiments, the heat exchange assembly 2 further includes a heat exchanger 23, an expansion tank 24, a water pump 25, and a refrigerant pipeline; the buffer assembly 3 further includes a third buffer 33, a fourth buffer 34, and a fifth buffer 35, the third buffer 33, the fourth buffer 34, and the fifth buffer 35 being respectively disposed on the side of the first buffer 31 away from the bottom wall 11, so as to respectively form a second accommodating cavity covering the outer periphery of the heat exchanger 23, a third accommodating cavity covering the outer periphery of the expansion tank 24, and a fourth accommodating cavity covering the outer periphery of the refrigerant pipeline, the fifth buffer 35 being provided with a relief groove 351, at least a portion of the water pump 25 extending out from the relief groove 351.

[0058] like Figure 1 and Figure 4 As shown, the housing 1 includes four side walls 12, which are described in sequence as the first side wall, the second side wall, the third side wall, and the fourth side wall. The heat exchange assembly 2 also includes a heat exchanger 23, an expansion tank 24, a water pump 25, and refrigerant piping. The electric heater 21 and the water pump 25 are located near the first side wall, the expansion tank 24 and the heat exchanger 23 are located near the third side wall, the electric heater 21 and the expansion tank 24 are located near the second side wall, and the heat exchanger 23 and the water pump 25 are located opposite each other near the fourth side wall. This arrangement makes the layout of each component in the heat exchange assembly 2 clear, neat, and aesthetically pleasing, improving the design quality and grade of the product.

[0059] The heat exchange assembly 2 also includes an inlet pipe 27, a connecting pipe 28, and an outlet pipe 29. Since the hydraulic device 100 is generally placed vertically in the installation state, the inlet port of the inlet pipe 27 and the outlet port of the outlet pipe 29 can be set on the fourth side wall near the ground. When the hydraulic device 100 needs to be drained, the water in the inlet pipe 27 and the outlet pipe 29 can flow down naturally along the inlet pipe 27 or the outlet pipe 29 under the action of gravity, and natural drainage can be achieved without the need for manual drainage through a separate drain pipe.

[0060] The buffer assembly 3 also includes a third buffer 33, a fourth buffer 34, and a fifth buffer 35. The third buffer 33, the fourth buffer 34, and the fifth buffer 35 respectively cover the side of the first buffer 31 away from the bottom wall 11 to form a second accommodating cavity, a third accommodating cavity, and a fourth accommodating cavity, respectively. The second accommodating cavity covers the outer periphery of the heat exchanger 23, the third accommodating cavity covers the outer periphery of the expansion tank 24, and the fourth accommodating cavity covers the outer periphery of the heat exchange pipeline. This can limit the various components of the heat exchange assembly 2 to the accommodating space of the housing 1, buffering the vibration and impact between the heat exchange assembly 2 and the housing 1 during transportation. On the other hand, it can also provide a good heat preservation effect for the heat exchange assembly 2.

[0061] For example, heat exchanger 23 can be a plate heat exchanger. Plate heat exchangers have a compact structure, high heat exchange efficiency, and can save space, making the overall structure of the hydraulic device 100 more compact. In other examples, heat exchanger 23 can also be other types of heat exchangers. Heat exchanger 23 has a first inlet and a first outlet, electric heater 21 has a second inlet and a second outlet, inlet pipe 27 is connected to the first inlet, connecting pipe 28 is connected to the first outlet and the second inlet, and outlet pipe 29 is connected to the second outlet.

[0062] The water pump 25 can be installed on the outlet pipe 29, and the expansion tank 24 is connected to the inlet pipe 27 through the expansion joint to buffer the pressure fluctuations of the water circulation pipeline. When the pressure of the water circulation pipeline is too high, water will enter the expansion tank 24 through the expansion joint to reduce the pressure of the water circulation pipeline and protect the various components of the water circulation pipeline from damage due to excessive pressure.

[0063] Water from the water circulation pipe first flows into the inlet pipe 27, then into the heat exchanger 23 through the first inlet. After heat exchange in the heat exchanger 23, it flows out from the first outlet, then through the connecting pipe 28 and the second inlet into the electric heater 21. It then flows out from the first outlet and into the outlet pipe 29, finally flowing back into the water circulation pipe through the outlet pipe 29. For heating, if the temperature of the hot water flowing out of the heat exchanger 23 does not reach the required temperature, it needs to be heated in the electric heater 21. If the temperature of the hot water flowing out of the heat exchanger 23 reaches the required temperature, it does not need to be heated when passing through the electric heater 21. For cooling, the cold water flowing out of the heat exchanger 23 does not need to be heated when passing through the electric heater 21.

[0064] The heat exchanger 23 also has a first refrigerant inlet and a second refrigerant inlet. The refrigerant piping includes a first refrigerant pipe connected to the first refrigerant inlet and a second refrigerant pipe connected to the second refrigerant inlet. During the heating process, the refrigerant from the refrigerant piping of the hydraulic device 100 first flows into the first refrigerant pipe, then flows into the heat exchanger 23 through the first refrigerant inlet to exchange heat with the water in the heat exchanger 23. After heat exchange, the refrigerant flows out from the second refrigerant inlet and into the second refrigerant pipe, and finally flows back into the refrigerant piping through the second refrigerant pipe. During the cooling process, the refrigerant from the refrigerant piping first flows into the second refrigerant pipe, then flows into the heat exchanger 23 through the second refrigerant inlet to exchange heat with the water in the heat exchanger 23. After heat exchange, the refrigerant flows out from the first refrigerant inlet and into the first refrigerant pipe, and finally flows back into the refrigerant piping through the first refrigerant pipe.

[0065] In addition, the hydraulic device 100 also includes a first fixing frame and a second fixing frame (not shown in the figure). One end of the first fixing frame is connected to the bottom wall 11, and the other end of the first fixing frame passes through the first buffer member 31 and is fixedly connected to the heat exchanger 23. One end of the second fixing frame is connected to the bottom wall 11, and the other end of the second fixing frame passes through the first buffer member 31 and is fixedly connected to the expansion tank 24. The first fixing frame and the second fixing frame can improve the connection strength between the heat exchanger 23 and the expansion tank 24. Even if the buffer member 3 fails, the first fixing frame can still limit the heat exchanger 23, and the second fixing frame can still limit the expansion tank 24, thereby improving the assembly reliability of the heat exchanger assembly 2.

[0066] In addition, the assembly method of the hydraulic device 100 provided in this application embodiment includes the following steps S1 to S6.

[0067] Step S1: Provide a housing 1, a heat exchange assembly 2, a buffer assembly 3, and a support member 4. The housing 1 includes a bottom wall 11 and side walls 12 arranged around the bottom wall 11. An accommodating space is formed between the bottom wall 11 and the side walls 12. The heat exchange assembly 2 includes an electric heater 21. One end of the electric heater 21 is provided with a connector 22. The buffer assembly 3 includes a first buffer member 31 and a second buffer member 32. A first accommodating cavity can be formed between the second buffer member 32 and the first buffer member 31.

[0068] Step S2: Place the first buffer 31 into the receiving space and set it to fit against the bottom wall 11;

[0069] Step S3: Place the heat exchange assembly 2 on the first buffer 31, wherein the electric heater 21 is placed inside the first accommodating cavity;

[0070] Step S4: Connect one end of the support member 4 to the connector 22, and then rotate the support member 4 so that the other end of the support member 4 is close to the adjacent side wall 12.

[0071] Step S5: Fix the other end of the support 4 to the adjacent side wall 12;

[0072] Step S6: Cover the side of the first buffer 31 away from the bottom wall 11 with the second buffer 32 to cover the outer periphery of the electric heater 21, and the end of the support 4 that is rotatably connected to the connector 22 passes through the notch 321 of the second buffer 32.

[0073] It is understandable that in step S3, the heat exchange assembly 2 is placed on the first buffer 31. Specifically, the electric heater 21, heat exchanger 23, water pump 25, expansion tank 24 and heat exchange pipeline are placed in the corresponding accommodating cavity of the first buffer 31, and then each pipeline is connected.

[0074] In the description of this application, references to terms such as "in some embodiments" or "exemplary" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0075] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A hydraulic device, characterized by, The water power device comprises a box body having a containing space, a heat exchange assembly arranged in the containing space, the heat exchange assembly comprising an electric heater, one end of the electric heater being provided with a joint, and a support, one end of the support being rotationally connected with the joint, and the other end of the support being fixedly connected with the box body. The box body comprises a bottom wall and a side wall, the side wall being arranged around the periphery of the bottom wall, and the support comprises a first support portion and a second support portion, the first support portion being rotationally connected with the joint, and the second support portion being fixedly connected with the side wall. The joint comprises a first shaft sleeve and a second shaft sleeve connected in sequence, the outer diameter of the second shaft sleeve being larger than that of the first shaft sleeve, one end of the electric heater being connected with the first shaft sleeve, and a gap being formed between the end face of the second shaft sleeve and one end of the electric heater, one end of the first support portion away from the second support portion extending into the gap and being sleeved on the periphery of the first shaft sleeve. One end of the first support portion away from the second support portion is provided with a clamping groove having an opening, the clamping groove being capable of accommodating and supporting the first shaft sleeve. The clamping groove is a circular arc-shaped groove, the inner diameter of the clamping groove being greater than or equal to the outer diameter of the first shaft sleeve and less than the outer diameter of the second shaft sleeve.

2. The hydraulic device of claim 1, wherein The second support portion is provided with a positioning hole, and the second support portion is fixedly connected with the side wall through the positioning hole.

3. The hydraulic device of claim 2, wherein The water power device further comprises a buffer assembly, the buffer assembly comprising a first buffer member and a second buffer member, the first buffer member being arranged in abutment with the bottom wall, and the second buffer member being arranged on the side of the first buffer member away from the bottom wall to form a first accommodating cavity covering the periphery of the electric heater, the second buffer member being provided with a gap, and one end of the first support portion rotationally connected with the joint penetrating through the gap.

4. The hydraulic device of claim 3, wherein The heat exchange assembly further comprises a heat exchanger, an expansion tank, a water pump and a refrigerant pipeline.

5. The hydraulic device of claim 4, wherein The buffer assembly further comprises a third buffer member, a fourth buffer member and a fifth buffer member, the third buffer member, the fourth buffer member and the fifth buffer member being arranged on the side of the first buffer member away from the bottom wall to form a second accommodating cavity covering the periphery of the heat exchanger, a third accommodating cavity covering the periphery of the expansion tank and a fourth accommodating cavity covering the periphery of the refrigerant pipeline respectively, and the fifth buffer member being further provided with a avoiding groove, and at least part of the water pump extending out of the avoiding groove.

6. The hydraulic device of claim 2, wherein The water power device further comprises a first fixing frame and a second fixing frame, one end of the first fixing frame being connected with the bottom wall, the other end of the first fixing frame penetrating through the first buffer member and being fixedly connected with the heat exchanger, one end of the second fixing frame being connected with the bottom wall, and the other end of the second fixing frame penetrating through the first buffer member and being fixedly connected with the expansion tank.

7. A hydraulic device according to any one of claims 2 to 6, characterised in that, The water power device comprises a box body having a containing space, a heat exchange assembly arranged in the containing space, the heat exchange assembly comprising an electric heater, one end of the electric heater being provided with a joint, and a support, one end of the support being rotationally connected with the joint, and the other end of the support being fixedly connected with the box body.

8. The hydraulic device of claim 7, wherein ​ ​ 9. The hydraulic device of claim 8, wherein ​ 10. A heat pump system, characterized by, ​

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