Box assembly, hydraulic module and heat pump system

Abstract

The utility model relates to a box body assembly, a hydraulic module and a heat pump system. The box body assembly comprises a box body frame; the door body is movably connected with the box body frame, and the door body is located at the front end of the box body frame; the back plate is detachably connected with the box body frame, the back plate is located at the rear end of the box body frame, and a mounting opening is formed in the back plate; the connecting plate is detachably connected with the back plate, and the connecting plate covers the mounting opening; and the plurality of pipe joints are arranged on the connecting plate. When the hydraulic module is repaired and maintained, the connecting plate can be separated from the back plate, then the back plate is separated from the box body frame, the pipe joints are all located on the connecting plate, even if the back plate is detached, the pipe joints can be located at the original positions, and the pipe assemblies of the hydraulic module cannot be pulled; therefore, the pipe joint and the pipeline assembly do not need to be detached and separated, and water stored in the hydraulic module does not need to be discharged. Therefore, the working efficiency can be improved, and the waste of water resources can be reduced or avoided.

Description

Technical Field

[0001] The present application relates to the technical field of expansion tanks, and in particular to a tank assembly, a hydraulic module, and a heat pump system. Background Art

[0002] The hydraulic module in the related art is equipped with multiple pipe joints on the box body, which are used to connect the pipe assembly inside the box to the external water pipe. In some cases, in order to repair and maintain the hydraulic module, the back panel of the box body needs to be removed. Before removing the back panel, it is necessary to separate the pipe assembly from the pipe joints on the back panel to prevent the removed back panel from pulling on the pipe assembly. This will affect the efficiency of the operation. In addition, before separating the pipe assembly from the pipe joints, all the water in the hydraulic module needs to be drained, which will also affect the efficiency of the operation and cause waste of water resources. Utility Model Content

[0003] The embodiments of the present application provide a box assembly, a hydraulic module, and a heat pump system, which are intended to improve the efficiency of repair and maintenance operations and reduce the waste of water resources.

[0004] In the first aspect, the present application proposes a box assembly for a hydraulic module, wherein the box assembly includes: a box frame; a door body, which is movably connected to the box frame and is located at the front end of the box frame; a back plate, which is detachably connected to the box frame and is located at the rear end of the box frame, and is provided with an installation port; a connecting plate, which is detachably connected to the back plate and covers the installation port; and a plurality of pipe joints, wherein the plurality of pipe joints are arranged on the connecting plate.

[0005] In the embodiment of the present application, the back panel of the housing assembly is detachably connected to the housing frame, allowing the back panel to be separated from the housing frame for easy repair and maintenance of the hydraulic module. The back panel has a mounting opening, which is covered by a connecting plate. The connecting plate is detachably connected to the back panel, and multiple pipe joints are provided on the connecting plate. This arrangement allows the connecting plate, which is provided with the pipe joints, to be separated from the back panel. Therefore, when repairing or maintaining the hydraulic module, the connecting plate can be separated from the back panel and then from the housing frame, while the connecting plate remains in place thanks to the support provided by the pipe assembly and external water pipes. Because the pipe joints are all located on the connecting plate, they remain in place even if the back panel is removed, without causing any tension on the hydraulic module's pipe assembly. Therefore, there is no need to disassemble the pipe joints from the pipe assembly, nor is there any need to drain the water in the hydraulic module. This improves operational efficiency and reduces or avoids water waste.

[0006] In some embodiments, the connecting plate includes: a main board body, the pipe joint is arranged on the main board body; and an abutment portion, the abutment portion is arranged on the edge of the main board body, the main board body protrudes from the abutment portion in a direction away from the door body, the main board body is passed through the installation port, and the abutment portion abuts against the surface of the back plate close to the door body.

[0007] In some embodiments, the edge of the main plate body and the inner wall of the mounting opening are pressed against each other to fix the connecting plate to the back plate.

[0008] In some embodiments, the abutting portion is connected to the back plate by screws.

[0009] In some embodiments, the main body is provided with a plurality of connection holes, the pipe joint includes a pipe joint body and a fixing plate, the pipe joint body is connected to the fixing plate, and the fixing plate is passed through the connection holes and clamped with the main body.

[0010] In some embodiments, the connecting hole is a circular hole, and the fixing plate is a circular plate; an abutment ring is provided at the rear end of the fixing plate, and the abutment ring abuts against the rear surface of the main board body; a clamping ring is formed at the front end of the fixing plate, and the outer diameter of the clamping ring is smaller than the outer diameter of the abutment ring; a clamping groove is defined between the clamping ring and the abutment ring, and the clamping groove is used to engage with the main board body.

[0011] In some embodiments, the back plate is connected to the box frame by screws.

[0012] In some embodiments, the box frame includes a top plate, a first side plate, a second side plate and a bottom plate, the first side plate and the second side plate are arranged opposite to each other, the top plate is connected to the upper ends of the first side plate and the second side plate, and the bottom plate is connected to the lower ends of the first side plate and the second side plate.

[0013] In a second aspect, the present application proposes a hydraulic module, which includes the box assembly in any of the above embodiments.

[0014] In some embodiments, the hydraulic module further includes: a buffer water tank, which is arranged inside the box assembly; and a pipeline assembly, which is arranged inside the box assembly, and the pipe joint is connected to the buffer water tank through the pipeline assembly.

[0015] In a third aspect, the present application proposes a heat pump system, which includes the hydraulic module in any one of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A partially exploded schematic diagram of a hydraulic module provided in one embodiment of the present application;

[0018] Figure 2 A schematic structural diagram of a box assembly provided in one embodiment of the present application;

[0019] Figure 3 A schematic structural diagram of a box assembly provided in one embodiment of the present application from another perspective;

[0020] Figure 4 A schematic structural diagram of a backplane provided in one embodiment of the present application;

[0021] Figure 5 A schematic structural diagram of a connecting plate provided in one embodiment of the present application;

[0022] Figure 6 A schematic structural diagram of a pipe joint provided in one embodiment of the present application;

[0023] Figure 7 A schematic structural diagram of a pipe joint provided in one embodiment of the present application from another perspective.

[0024] Description of reference numerals:

[0025] 1. Hydraulic module;

[0026] 10. Box assembly; 20. Buffer water tank;

[0027] 100, box frame; 110, top plate; 120, first side plate; 130, second side plate; 140, bottom plate;

[0028] 200, door body;

[0029] 300, back panel; 310, mounting port;

[0030] 400, connecting plate; 410, main plate body; 411, connecting hole; 420, abutting portion;

[0031] 500, pipe joint; 510, pipe joint body; 520, fixing plate; 521, abutting ring; 522, clamping ring; 523, clamping groove; 524, slit. DETAILED DESCRIPTION

[0032] The principles and features of the present application are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present application and are not used to limit the scope of the present application.

[0033] The hydraulic module in the related art is equipped with multiple pipe joints on the box body, which are used to connect the pipe assembly inside the box to the external water pipe. In some cases, in order to repair and maintain the hydraulic module, the back panel of the box body needs to be removed. Before removing the back panel, it is necessary to separate the pipe assembly from the pipe joints on the back panel to prevent the removed back panel from pulling on the pipe assembly. This will affect the efficiency of the operation. In addition, before separating the pipe assembly from the pipe joints, all the water in the hydraulic module needs to be drained, which will also affect the efficiency of the operation and cause waste of water resources.

[0034] Based on the above situation, an embodiment of the first aspect of the present application provides a box assembly, which is used for a hydraulic module, aiming to improve the operating efficiency during repair and maintenance, and reduce the waste of water resources.

[0035] Figure 1 This is a partial exploded schematic diagram of a hydraulic module provided in one embodiment of the present application. Figure 2 This is a structural diagram of a box assembly provided in one embodiment of the present application. Figure 3 This is a structural diagram of the box assembly provided in one embodiment of the present application from another perspective. Figure 4 This is a schematic diagram of the structure of the backplane provided in one embodiment of the present application. Figures 1 to 4 As shown, the box assembly 10 in the embodiment of the present application includes a box frame 100, a door body 200, a back panel 300, a connecting plate 400, and a plurality of pipe joints 500. The door body 200 is movably connected to the box frame 100, and the door body 200 is located at the front end of the box frame 100. The back panel 300 is detachably connected to the box frame 100, and the back panel 300 is located at the rear end of the box frame 100. The back panel 300 is provided with an installation opening 310. The connecting plate 400 is detachably connected to the back panel 300, and the connecting plate 400 covers the installation opening 310. A plurality of pipe joints 500 are provided on the connecting plate 400.

[0036] Among them, for the box assembly 10, the end facing the user is the front end, and correspondingly, the end opposite to the front end is the rear end. The door body 200 is arranged at the front end of the box frame 100, which makes the door body 200 face the user, so that the user can open and close the door body 200 more conveniently. Any existing more common connection method can be adopted between the door body 200 and the box frame 100, as long as the opening and closing functions of the door body 200 can be achieved. For example, the door body 200 and the box frame 100 can be connected by a hinge, so that the door body 200 can be opened and closed in a flipping manner relative to the box frame 100. For another example, the door body 200 can also be slidably connected to the box frame 100, so that the door body 200 can be opened and closed in a sliding manner relative to the box frame 100.

[0037] Generally speaking, the hydraulic module 1 is equipped with a buffer water tank 20 and a piping assembly, wherein the buffer water tank 20 and the piping assembly are both located within the tank assembly 10. The pipe joint 500 is used to connect the piping assembly to an external water pipe, which can be further connected to a hot water source, a user terminal, etc., wherein the hot water source can be an external unit of a heat pump system, and the user terminal can be a domestic water tank, heating equipment, etc.

[0038] In the box assembly 10 in the embodiment of the present application, the back plate 300 is connected to the box frame 100 in a detachable manner, which allows the back plate 300 to be separated from the box frame 100 to facilitate the repair and maintenance of the hydraulic module 1. The back plate 300 is provided with an installation opening 310, and the connecting plate 400 covers the installation opening 310. The connecting plate 400 is detachably connected to the back plate 300, and a plurality of pipe joints 500 are provided on the connecting plate 400. This arrangement allows the connecting plate 400 provided with the pipe joints 500 to be separated from the back plate 300. In this way, when repairing and maintaining the hydraulic module 1, the connecting plate 400 can be separated from the back plate 300, and then the back plate 300 can be separated from the box frame 100, and the connecting plate 400 can be maintained in place by the support of the pipeline assembly and the external water pipe. Since the pipe joints 500 are all located on the connecting plate 400, even if the back plate 300 is removed, the pipe joints 500 remain in their original positions and do not cause any pulling on the pipe assembly of the hydraulic module 1. Therefore, there is no need to remove the pipe joints 500 from the pipe assembly, nor is there any need to drain the water in the hydraulic module 1. This improves operating efficiency and reduces or avoids water waste.

[0039] Figure 5 A schematic diagram of the structure of the connecting plate provided in one embodiment of the present application is shown in FIG. Figure 3 、 Figure 4 as well as Figure 5As shown, in some embodiments, the connecting plate 400 includes a main body 410 and an abutment portion 420, the pipe joint 500 is arranged on the main body 410, the abutment portion 420 is arranged on the edge of the main body 410, the main body 410 protrudes backward (away from the door body 200) from the abutment portion 420, the main body 410 is passed through the installation port 310, and the abutment portion 420 abuts against the front surface of the back panel 300 (the surface close to the side of the door body 200).

[0040] An abutment portion 420 is provided on the edge of the main plate body 410. When the connecting plate 400 is connected to the back plate 300, the main plate body 410 is inserted into the mounting opening 310 of the back plate 300, and the abutment portion 420 abuts against the front surface of the back plate 300. The abutment between the abutment portion 420 and the back plate 300 limits the position of the connecting plate 400, thereby facilitating the connection plate 400 to remain fixed relative to the back plate 300 along the front-to-back direction of the box assembly 10.

[0041] In one embodiment, the edge of the main body 410 and the inner wall of the mounting opening 310 are pressed against each other to fix the connecting plate 400 to the back plate 300. In other words, the connecting plate 400 and the back plate 300 are kept connected by tightly squeezing the main body 410 and the inner wall of the mounting opening 310. This makes it possible to disassemble and assemble the connecting plate 400 and the back plate 300 by applying external force. When the hydraulic module 1 needs to be repaired or maintained, the back plate 300 can be removed from the box frame 100, and the connecting plate 400 can be removed from the back plate 300. When removing the connecting plate 400, a forward push is applied from the rear surface of the main body 410 (the surface away from the door body 200) to remove the connecting plate 400 from the back plate 300.

[0042] In addition, when the connecting plate 400 needs to be assembled with the back plate 300, the main plate body 410 is aligned with the mounting port 310, and a backward thrust is applied from the front surface of the main plate body 410 (the surface close to the door body 200 side) to press the main plate body 410 into the mounting port 310, thereby fixing the connecting plate 400 to the back plate 300.

[0043] This disassembly and assembly method does not require the use of other connectors, which is conducive to cost savings. In addition, the disassembly and assembly operations are also relatively convenient, which is conducive to improving disassembly and assembly efficiency.

[0044] In another embodiment, the abutting portion 420 is connected to the back plate 300 by screws.

[0045] Specifically, a threaded hole can be provided in the abutment portion 420, and a through hole can be provided in the back plate 300. Screws can be inserted through the through holes and then connected to the threaded holes. In this way, the connecting plate 400 and the back plate 300 can be connected using screws. When the connecting plate 400 needs to be removed from the back plate 300, the screws are first unscrewed, and then the back plate 300 and the connecting plate 400 are separated. The screw connection between the connecting plate 400 and the back plate 300 can improve the stability of the connection between the two.

[0046] Figure 6 This is a schematic diagram of the structure of a pipe joint provided in one embodiment of the present application. Figure 7 This is a schematic diagram of the structure of a pipe joint provided in one embodiment of the present application from another perspective. Figure 5 、 Figure 6 as well as Figure 7 As shown, in some embodiments, the main body 410 is provided with a plurality of connection holes 411 , and the pipe joint 500 includes a pipe joint body 510 and a fixing plate 520 , the pipe joint body 510 is connected to the fixing plate 520 , and the fixing plate 520 is passed through the connection holes 411 and is clamped with the main body 410 .

[0047] The pipe joint body 510 is primarily used to connect the pipe assembly within the box assembly 10 with the external water pipe, and the fixing plate 520 is used to connect the pipe joint body 510 to the connecting plate 400. The fixing plate 520 is inserted through the connecting hole 411 and engages with the main body 410 of the connecting plate 400. This arrangement facilitates quick assembly of the pipe joint 500 and the connecting plate 400.

[0048] In one embodiment, the connecting hole 411 is a circular hole, the fixing plate 520 is a circular plate, the rear end of the fixing plate 520 is provided with an abutment ring 521, the abutment ring 521 abuts against the rear surface of the main board body 410, and the front end of the fixing plate 520 is formed with a retaining ring 522, the outer diameter of the retaining ring 522 is smaller than the outer diameter of the retaining ring 521, and a slot 523 is defined between the retaining ring 522 and the abutment ring 521, and the slot 523 is used to engage with the main board body 410.

[0049] When assembling the fixing plate 520 with the main body 410 of the connecting plate 400, the fixing plate 520 can be placed close to the rear side of the main body 410 and aligned with the connecting hole 411. Then, the fixing plate 520 can be pressed forward by external force so that the retaining ring 522 passes through the connecting hole 411. In this way, the retaining groove 523 can be engaged with the main body 410.

[0050] like Figure 6 、 Figure 7 As shown, further, a plurality of slits 524 can be opened on the fixing plate 520, so that the fixing plate 520 can be deformed more easily when subjected to external force, thereby allowing the clamping ring 522 to pass through the connecting hole 411 more easily.

[0051] In some embodiments, the back panel 300 is connected to the box frame 100 via screws. To remove the back panel 300 from the box frame 100, the screws can be removed first, and then the back panel 300 can be separated from the box frame 100. The screw connection between the back panel 300 and the box frame 100 allows the back panel 300 to be detached from the box frame 100 while also ensuring a more secure connection between the two when assembled.

[0052] like Figure 2 As shown, in some embodiments, the box frame 100 includes a top plate 110, a first side plate 120, a second side plate 130 and a bottom plate 140. The first side plate 120 and the second side plate 130 are arranged opposite to each other, the top plate 110 is connected to the upper ends of the first side plate 120 and the second side plate 130, and the bottom plate 140 is connected to the lower ends of the first side plate 120 and the second side plate 130.

[0053] For example, the top plate 110 and the first and second side plates 120, 130 may be connected by screws, rivets, or welding. Similarly, the bottom plate 140 and the first and second side plates 120, 130 may be connected by screws, rivets, or welding.

[0054] The box frame 100 includes a top plate 110, a first side plate 120, a second side plate 130, and a bottom plate 140. The top plate 110 is connected to the upper ends of the first and second side plates 120, 130, while the bottom plate 140 is connected to the lower ends of the first and second side plates 120, 130. This allows the box frame 100 to be constructed as a rectangular frame. On this basis, the back plate 300 is mounted to the rear end of the box frame 100, and the door 200 is mounted to the front end of the box frame 100. Thus, the box frame 100, the back plate 300, and the door 200 collectively enclose a space for accommodating the buffer water tank 20 and the piping assembly.

[0055] like Figure 1 As shown, an embodiment of the second aspect of the present application provides a hydraulic module 1, and the hydraulic module 1 includes the box assembly 10 in any of the above embodiments.

[0056] In the hydraulic module 1 of the embodiment of the present application, the back plate 300 of the box assembly 10 is detachably connected to the box frame 100, which allows the back plate 300 to be separated from the box frame 100 to facilitate repair and maintenance of the hydraulic module 1. The back plate 300 is provided with an installation opening 310, and the connecting plate 400 covers the installation opening 310. The connecting plate 400 is detachably connected to the back plate 300, and a plurality of pipe joints 500 are provided on the connecting plate 400. This arrangement allows the connecting plate 400 provided with the pipe joints 500 to be separated from the back plate 300. In this way, when repairing and maintaining the hydraulic module 1, the connecting plate 400 can be separated from the back plate 300, and then the back plate 300 can be separated from the box frame 100, while the connecting plate 400 can be maintained in place by the support of the pipe assembly and the external water pipe. Since the pipe joints 500 are all located on the connecting plate 400, even if the back plate 300 is removed, the pipe joints 500 remain in their original positions and do not cause any pulling on the pipe assembly of the hydraulic module 1. Therefore, there is no need to remove the pipe joints 500 from the pipe assembly, nor is there any need to drain the water in the hydraulic module 1. This improves operating efficiency and reduces or avoids water waste.

[0057] like Figure 1 As shown, in some embodiments, the hydraulic module 1 also includes a buffer water tank 20 and a pipeline assembly (not shown in the figure), the buffer water tank 20 is arranged inside the box assembly 10, the pipeline assembly is arranged inside the box assembly 10, and the pipe joint 500 is connected to the buffer water tank 20 through the pipeline assembly.

[0058] In this way, when the pipe joint 500 is connected to the external water pipe, the buffer water tank 20 also establishes a connection with the external water pipe through the pipeline assembly and the pipe joint 500, so that cold water or hot water can be transported between the buffer water tank 20 and the external water pipe.

[0059] An embodiment of the third aspect of the present application provides a heat pump system, which includes the hydraulic module 1 in any of the above embodiments.

[0060] The heat pump system in the embodiment of the present application is based on the same inventive concept as the hydraulic module 1 in the above embodiment. Therefore, the heat pump system in the embodiment of the present application can obtain the beneficial effects of the hydraulic module 1 in the above embodiment.

[0061] Furthermore, the heat pump system may also include a heat pump outdoor unit and a user terminal. The heat pump outdoor unit is connected to the buffer water tank 20 via a first hot water supply pipe and a first return pipe, and the buffer water tank 20 is connected to the buffer water tank 20 via a second hot water supply pipe and a second return pipe. The heat pump outdoor unit delivers hot water to the buffer water tank 20 via the first hot water supply pipe, and the buffer water tank 20 can further deliver the hot water to the user terminal via the second hot water supply pipe. The user terminal may include a domestic water tank, heating equipment, etc. The buffer water tank 20 also receives low-temperature water from the user terminal via the second return pipe, and further delivers the low-temperature water to the heat pump outdoor unit via the first return pipe, so that the heat pump outdoor unit heats the low-temperature water, converts it into hot water, and supplies it to the buffer water tank 20 again.

[0062] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present application.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0064] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0065] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer 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, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0067] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A box assembly for a hydraulic module, characterized in that: The box assembly includes: Box frame; A door body, the door body being movably connected to the box frame and located at the front end of the box frame; A back plate, the back plate is detachably connected to the box frame, the back plate is located at the rear end of the box frame, and the back plate is provided with a mounting opening; a connecting plate, the connecting plate being detachably connected to the back plate and covering the mounting opening; and A plurality of pipe joints are provided on the connecting plate.

2. The box assembly according to claim 1, characterized in that The connecting plate comprises: a main body, the pipe joint being arranged on the main body; and The abutment portion is arranged on the edge of the main board body, the main board body protrudes from the abutment portion in the direction away from the door body, the main board body is passed through the installation opening, and the abutment portion abuts against the surface of the back plate close to the door body.

3. The box assembly according to claim 2, characterized in that The edge of the main plate body and the inner wall of the mounting opening are pressed against each other so that the connecting plate is fixed to the back plate.

4. The box assembly according to claim 2, characterized in that The abutting portion is connected to the back plate via screws.

5. The box assembly according to claim 2, characterized in that: The main body is provided with a plurality of connection holes. The pipe joint includes a pipe joint body and a fixing plate. The pipe joint body is connected to the fixing plate. The fixing plate is passed through the connection holes and is clamped with the main body.

6. The box assembly according to claim 5, characterized in that: The connecting hole is a circular hole, and the fixing plate is a circular plate; The rear end of the fixed plate is provided with an abutment ring, which abuts against the rear surface of the main board body. The front end of the fixed plate is formed with a clamping ring, the outer diameter of the clamping ring is smaller than the outer diameter of the abutment ring, and a clamping groove is defined between the clamping ring and the abutment ring, and the clamping groove is used to engage with the main board body.

7. The box assembly according to claim 1, characterized in that The back plate is connected to the box frame by screws; And / or, the box frame includes a top plate, a first side plate, a second side plate and a bottom plate, the first side plate and the second side plate are arranged opposite to each other, the top plate is connected to the upper ends of the first side plate and the second side plate, and the bottom plate is connected to the lower ends of the first side plate and the second side plate.

8. A hydraulic module, characterized in that: The invention comprises the box assembly according to any one of claims 1 to 7.

9. The hydraulic module according to claim 8, characterized in that: The hydraulic module also includes: a buffer water tank, the buffer water tank being disposed inside the tank assembly; and A pipeline assembly is arranged inside the box assembly, and the pipe joint is connected to the buffer water tank through the pipeline assembly.

10. A heat pump system, characterized in that: Comprising the hydraulic module according to claim 8 or 9.

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