Hydraulic device at heating user end and heating and ventilation equipment

Abstract

This invention discloses a hydraulic device for heating at the user's end and HVAC equipment, relating to the field of HVAC technology. The hydraulic device for heating at the user's end includes a main body and a first water storage unit, an expansion compensation unit, and a heating distribution unit installed within the main body. The expansion compensation unit absorbs the increased water volume after the first water storage unit expands due to heat. The heating distribution unit distributes the hot water from the first water storage unit and the heat pump device to the user's heating terminal. Insulation components are installed on the expansion compensation unit and / or the heating distribution unit. The insulation components include a first insulation element and a second insulation element connected together, which enclose a space for accommodating the pipeline. This invention integrates water storage, expansion compensation, constant pressure water supply, and control at the user's end, reducing the space occupied by each pipeline, reducing on-site manual installation workload, and improving the thermal insulation performance of the pipeline through the insulation components.

Description

Technical Field

[0001] This invention relates to the field of heating, ventilation and air conditioning (HVAC) technology, and more particularly to a hydraulic device for heating households and HVAC equipment. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] Heating systems in HVAC systems provide heating and hot water services to users through centralized heat sources. As demands evolve, clients often require the integration of various devices such as zone control, buffer storage units, gas boilers, and solar energy systems.

[0004] However, this diverse configuration results in a complex waterway structure, which is not only labor-intensive to install but also highly dependent on the experience of workers, making it difficult to guarantee stable construction efficiency and quality. Summary of the Invention

[0005] The purpose of this invention is to at least solve the problems of inconvenient installation and complex structure of existing heating systems. This purpose is achieved through the following technical solution: In a first aspect, the present invention proposes a hydraulic device for heating at the user end, comprising a body, a first water storage unit, an expansion compensation unit, and a heating distribution unit. The first water storage unit is installed on the body and is used to store heating water. The expansion compensation unit is installed on the body and connected to the first water storage unit, and is configured to absorb the increased water volume after the first water storage unit expands due to heat. The heating distribution unit is installed on the body and is connected to the first water storage unit, an external heat pump device, and a user heating terminal, respectively. The heating distribution unit is used to distribute the hot water from the first water storage unit and the heat pump device to the user heating terminal. At least one of the expansion compensation unit and the heating distribution unit has an insulation component installed on its pipeline. The insulation component includes a first insulation element and a second insulation element connected together, and the first insulation element and the second insulation element enclose a receiving space for accommodating the pipeline.

[0006] By adopting the above technical solution, the water storage, expansion compensation, constant pressure water supply and control of the heating end are integrated into one, which reduces the space occupied by each pipeline and reduces the amount of manual installation work on site, thereby improving the construction efficiency and quality of the heating end device. In addition, the pipelines of the heating distribution unit and / or expansion compensation unit are equipped with heat insulation components, which improves the heat insulation performance of the pipeline.

[0007] In some embodiments of the present invention, the first insulation member is provided with a first connecting portion, the second insulation member is provided with a second connecting portion, and the first connecting portion is inserted into the second connecting portion.

[0008] The above technical solution utilizes the insertion of the first connecting part and the second connecting part to achieve the connection between the first insulation component and the second insulation component, resulting in a simple structure and convenient installation.

[0009] In some embodiments of the present invention, the first connecting portion and the second connecting portion are interference-fitted.

[0010] By adopting the above technical solution, the interference fit can improve the connection stability of the first connection part and the second connection part.

[0011] In some embodiments of the present invention, the interference fit between the first connecting portion and the second connecting portion is 10% to 15%, and the interference fit is the ratio of the diameter difference between the first connecting portion and the second connecting portion to the diameter of the first connecting portion.

[0012] Using the above technical solution, the interference fit of the first and second connecting parts is designed to be 10% to 15%, which facilitates installation and meets the connection stability requirements of the first and second insulation components. In some embodiments of the present invention, an installation gap is reserved between the inner surface of the insulation component enclosing the accommodating space and the outer surface of the pipeline.

[0013] By adopting the above technical solution, the gap setting can facilitate the wrapping of the pipeline with the insulation component.

[0014] In some embodiments of the present invention, the pipeline includes a straight pipe section and a variable diameter pipe section, the variable diameter pipe section being at least partially a variable diameter structure, and the installation gap between the variable diameter pipe section and the insulation component being greater than the installation gap between the inner surface of the straight pipe section and the insulation component.

[0015] By adopting the above technical solution, the installation gaps are set differently according to the actual assembly needs of straight pipe sections and variable diameter pipe sections. This not only ensures the fit and stability of the straight pipe section installation, but also provides more ample assembly space for the variable diameter pipe section. It effectively avoids the difficulty of wrapping caused by size changes or installation deviations, and improves the adaptability and efficiency of the overall construction.

[0016] In some embodiments of the present invention, the installation gap ranges from 0.5 mm to 1 mm.

[0017] By adopting the above technical solution and limiting the installation gap within this range, the insulation component can completely wrap the pipeline, avoiding installation interference or deformation of the insulation layer due to excessively small gaps. At the same time, it can also prevent excessively large gaps from causing too many voids between the insulation material and the pipeline, which would affect the insulation effect and structural stability, thus achieving the best balance between assembly convenience and insulation performance.

[0018] In some embodiments of the present invention, the heating household hydraulic device further includes a temperature detection element, which is connected to the pipeline, and the insulation component covers the temperature detection element.

[0019] By adopting the above technical solution, temperature information of the pipeline is obtained by using temperature detection devices, which facilitates the control of the heating system. By using insulation components to wrap the temperature detection devices, it can be ensured that the temperature measuring point and the main body of the pipeline are in a similar insulation environment, thereby improving the accuracy of detection.

[0020] In some embodiments of the present invention, the inner surface of the heat insulation component is provided with a clearance groove for accommodating an axially extending portion of the pipeline, the clearance groove being used to accommodate the temperature sensing element.

[0021] The above technical solution provides space for the temperature sensing element to be accommodated, so that the insulation component can fit tightly when covering the pipeline, and avoids the insulation layer from being deformed locally due to the protrusion of the temperature sensing element, which would affect the insulation effect.

[0022] In some embodiments of the present invention, the size of the clearance groove is larger than the size of the temperature sensing element along the axial direction of the pipeline and / or the circumferential direction of the pipeline.

[0023] By adopting the above technical solution, the temperature detection component can be conveniently accommodated in the clearance groove, thus avoiding interference between the temperature detection component and the insulation component.

[0024] In some embodiments of the present invention, the central angle of the pipeline corresponding to the clearance groove is in the range of 100° to 150° along the circumferential direction of the pipeline.

[0025] By adopting the above technical solution, the clearance groove has sufficient width to accommodate the temperature detection component, and avoids excessive reduction of the thermal insulation performance of the thermal insulation component due to excessively large groove angle.

[0026] In some embodiments of the present invention, the outer surface of the first insulation component is provided with a foolproof marking portion, and / or the outer surface of the second insulation component is provided with a foolproof marking portion.

[0027] By adopting the above technical solution, the error-proof marking department and / or error-proof marking department provides on-site installation personnel with cleaning and assembly guidelines, reducing the possibility of the first insulation component and the second insulation component being installed backwards.

[0028] In some embodiments of the present invention, the thickness of the first insulation component and the thickness of the second insulation component are both greater than half the inner diameter of the pipeline.

[0029] By adopting the above technical solution, the thickness of the first insulation component and the thickness of the second insulation component are both designed to be greater than half of the inner diameter of the pipe, so that when the first insulation component and the second insulation component are closed, the joint between the two has sufficient thickness and overlap, effectively preventing heat from leaking from the joint between the two, thereby improving the continuity and reliability of the overall insulation.

[0030] In some embodiments of the present invention, the heating household hydraulic device further includes a constant pressure water supply unit, which is installed on the body and used to connect the heating distribution unit to the external tap water pipeline. The constant pressure water supply unit is used to supply tap water to the heating distribution unit.

[0031] By adopting the above technical solution, the constant pressure water supply unit is integrated into the body, and the constant pressure water supply unit is used to supply tap water to the heating distribution unit, thus realizing the modularization and integration of the water supply function of the hydraulic device.

[0032] In some embodiments of the present invention, the body includes a main frame and a first crossbeam and a second crossbeam installed from top to bottom on the main frame. A first space is defined between the first crossbeam and the top of the main frame, a second space is defined between the second crossbeam and the first crossbeam, and a third space is defined between the second crossbeam and the bottom of the main frame. The first space, the second space, and the third space are interconnected. The heating distribution unit is located in the first space and the second space, the expansion compensation unit is located in the second space and the third space, and the constant pressure water supply unit is located in the third space.

[0033] By adopting the above technical solution, the vertical layered design arranges each unit according to functional logic. The heating distribution unit is located in the center to facilitate connection with other units and user heating terminals. The expansion and water replenishment units, which are directly related to water, are placed in the lower middle part, which conforms to the pressure principle and improves safety.

[0034] In some embodiments of the present invention, the expansion compensation unit includes a compensation pipeline and a plurality of expansion tanks. One end of the compensation pipeline is connected to the first water storage unit, and the other end is connected to the plurality of expansion tanks respectively. The heat preservation component is installed on the compensation pipeline.

[0035] By adopting the above technical solution, multiple expansion tanks are connected through compensation pipelines, which not only simplifies the system structure and reduces pipeline interfaces and potential leakage points, but also facilitates centralized installation of insulation components.

[0036] In some embodiments of the present invention, the expansion tank is mounted in the machine body via a pull-out structure, the pull-out structure being configured to allow the expansion tank to be pulled out of the machine body.

[0037] By adopting the above technical solution, the expansion tank is installed to the machine body through a pull-out structure. The expansion tank can be directly pulled out of the machine body for inspection and replacement without removing other parts, which facilitates the maintenance of the expansion tank.

[0038] In some embodiments of the present invention, the heating household hydraulic device further includes a control unit installed in the first space, the control unit being electrically connected to the expansion compensation unit, the heating distribution unit and the constant pressure water supply unit respectively.

[0039] Using the above technical solution, the control unit can be used to operate and control the expansion compensation unit, heating distribution unit, and constant pressure water supply unit. Moreover, placing the control unit on top makes it easy to operate and has a moisture-proof effect.

[0040] In some embodiments of the invention, the control unit includes a housing and a control component mounted within the housing, the lower end of the housing being hinged to the body and configured to be flipped to be located outside the body.

[0041] By adopting the above technical solution, the control unit is designed to be flip-out, which not only facilitates the operation and maintenance of the control unit, but also facilitates the operation and maintenance of the pipeline inside the control unit, greatly improving the efficiency of operation and maintenance.

[0042] Secondly, the present invention provides a heating, ventilation and air conditioning (HVAC) device, including a heating end hydraulic device as described in any of the above technical solutions. Attached Figure Description

[0043] 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 invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 A schematic diagram of the structure of the heating household hydraulic device provided for the implementation of the present invention; Figure 2 A schematic diagram of the structure of the heating household hydraulic device after removing the sidewall, provided for the implementation of the present invention; Figure 3 A schematic diagram of a portion of the structure of the heating household hydraulic device provided for the implementation of the present invention, viewed from one perspective. Figure 4 A schematic diagram of a portion of the structure of the heating household hydraulic device provided for the implementation of the present invention from another perspective; Figure 5 for Figure 4 Partial structural diagram; Figure 6A schematic diagram of the flow path of the heating household hydraulic device provided for the implementation of this invention; Figure 7 A perspective view of the insulation component of the heating household hydraulic device and the first type of pipeline provided for the implementation of the present invention; Figure 8 A top view of the insulation component of the heating household hydraulic device and the first type of pipeline provided for the implementation of the present invention; Figure 9 for Figure 8 AA section diagram; Figure 10 A perspective view of the insulation component of the heating household hydraulic device provided for the implementation of the present invention after connection with the second type of pipeline; Figure 11 The insulation component of the heating household hydraulic device provided for the implementation of the present invention is an accessory after the connection of the second type of pipeline. Figure 12 for Figure 11 BB cross-section diagram; Figure 13 A cross-sectional schematic diagram of the insulation component, the pipeline, and the temperature detection element of the heating household hydraulic device provided for the implementation of the present invention.

[0044] The attached figures are labeled as follows: 100. Heating household hydraulic device; 10. Body; 11. Main frame; 111. First crossbeam; 112. Second crossbeam; 113. Third crossbeam; 12. Top plate; 13. Bottom plate; 14. Side plates; 15. Support frame; 16. Main drain outlet; 20. First water storage unit; 30. Expansion compensation unit; 31. First expansion tank; 32. Second expansion tank; 33. Third expansion tank; 34. Compensation pipeline; 341. Second safety valve; 3411. First drain outlet; 40. Heating distribution unit; 41. Heating outlet pipe; 411. First sub-pipeline; 4111. Heating outlet; 412. Water pump; 413. Straight pipe section; 414. Reducing pipe section; 42. Heating return pipe; 421. Second sub-pipeline; 4211. Heating return outlet; 43. First connecting pipe; 44. First three-way valve; 45. Storage water return path; 46. Storage water outlet path; 47. Heat pump outlet path; 48. Heat pump return path; 481. First filter; 49. Second three-way valve; 50. Constant pressure water supply unit; 51. Tap water supply path; 511. First safety valve; 512. Check valve; 513. Second filter; 5131. Drain valve; 5132. First connector; 5133. Second connector; 514. Isolation drain valve; 52. Tap water return path; 521. Fourth expansion tank; 60. Control unit; 61. Housing; 62. Power distribution box; 70. Thermal insulation component; 71. First thermal insulation element; 711. First connecting part; 72. Second thermal insulation element; 721. Second connecting part; 73. Installation gap; 74. Clearance groove; 75. Cable outlet hole; 80. Temperature detection components. Detailed Implementation

[0045] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0046] 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.

[0047] Although terms such as first, second, third, 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 "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or segment discussed below may be referred to as the second element, component, region, layer, or segment without departing from the teachings of the exemplary embodiments.

[0048] 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.

[0049] Combined with appendix Figure 1-5 As shown, this embodiment provides a heating terminal hydraulic device 100, which is mainly used in the heating water system of HVAC equipment, specifically a terminal for integrated centralized heating and domestic hot water. The heating terminal hydraulic device 100 of this embodiment can not only be used to connect user heating terminals (such as radiators, underfloor heating, or fan coil units), but also to connect external tap water pipes and the client's second water storage unit (not shown in the figure).

[0050] The heating household hydraulic device 100 in this embodiment includes functional units such as a body 10, a first water storage unit 20, an expansion compensation unit 30, a heating distribution unit 40, a constant pressure water supply unit 50, and a control unit 60.

[0051] The body 10 includes a main frame 11, a top plate 12, a bottom plate 13, and multiple side plates 14. The main frame 11 can be a rectangular or other shaped frame, and a support frame 15 can be installed at the bottom of the main frame 11. The top plate 12 is installed on the top of the main frame 11, and the bottom plate 13 is installed on the bottom wall of the main frame 11. Multiple side plates 14 are installed around the main frame 11 and are located between the top plate 12 and the bottom plate 13, so that the main frame 11, top plate 12, bottom plate 13, and multiple side plates 14 form a box-like structure, which is installed on the support frame 15.

[0052] The first water storage unit 20, expansion compensation unit 30, heating distribution unit 40, constant pressure water supply unit 50, and control unit 60 are all installed inside the body 10. The heating distribution unit 40 and constant pressure water supply unit 50 each have multiple pipes. Because some pipes are obstructed by structures such as the first water storage unit 20, expansion compensation unit 30, and control unit 60, therefore... Figure 1-5 Not all pipes are labeled; for information on the pipes of the aforementioned functional units, please refer to [reference needed]. Figure 6 (The arrows in the diagram indicate the direction of water flow.)

[0053] The first water storage unit 20 can be a water tank or other water storage structure. Its main function is to store hot water, buffer water temperature and pressure fluctuations, and assist the system in venting and stabilizing pressure. Similarly, the second water storage unit can also be a water tank, except that it is located outside the body 10 in this embodiment, serving as an expandable external structure.

[0054] The expansion compensation unit 30 is connected to the water tank and is used to absorb the increased water volume after the water storage unit expands due to heat. In some embodiments, the expansion compensation unit 30 includes one (this embodiment is not shown in the figure) or multiple expansion tanks.

[0055] The heating distribution unit 40 is used to connect the first water storage unit 20, the external heat pump device, and the user's heating terminal. The heating distribution unit 40 is used to distribute the hot water from the first water storage unit 20 and the heat pump device to the user's heating terminal.

[0056] The constant pressure water supply unit 50 is used to connect the heating distribution unit 40 and the external tap water pipeline, and the constant pressure water supply unit 50 is used to supply tap water to the heating distribution unit 40.

[0057] The control unit 60 is electrically connected to the expansion compensation unit 30, the heating distribution unit 40, and the constant pressure water supply unit 50, respectively. The electrical connection can be a line connection or a wireless connection. The control unit 60 is used to open and close the expansion compensation unit 30, the heating distribution unit 40, and the constant pressure water supply unit 50.

[0058] Compared to the method where each unit and module requires separate pipe installation and layout, the structure described in this embodiment integrates water storage, expansion compensation, heating distribution, constant pressure water supply and control into one unit, which greatly simplifies the heating water circuit structure at the household end, reduces on-site pipe and fitting connections, reduces installation complexity and manual dependence, and at the same time achieves stable hot water distribution, system pressure compensation and automatic regulation, thereby improving the system integration, operational reliability and construction efficiency.

[0059] It should be noted that the connection of the various units in this embodiment refers to interconnection through pipelines. However, the connection of the various pipelines or flow paths in this embodiment refers to direct or indirect connection and interconnection.

[0060] Combined with appendix Figure 2 and 3 As shown, in some embodiments, the body 10 of this embodiment includes a main frame 11 and a first crossbeam 111 and a second crossbeam 112 installed from top to bottom on the main frame 11. The first crossbeam 111 and the second crossbeam 112 can be horizontal crossbeams after the device is installed at the user's home.

[0061] The number of first crossbeams 111 and second crossbeams 112 can both be multiple. For example, four first crossbeams 111 can form a rectangular frame, and four second crossbeams 112 can form a rectangular frame.

[0062] The first space is defined between the first crossbeam 111 and the top of the main frame 11. Specifically, the first crossbeam 111, the top plate 12, part of the side plate 14, and part of the main frame 11 jointly enclose the first space. The second space is defined between the second crossbeam 112 and the first crossbeam 111. Specifically, the second space is defined between the second crossbeam 112 and the side plate 14 between the second crossbeam 111 and the first crossbeam 111, and part of the main frame 11 jointly enclose the second space. The third space is defined between the second crossbeam 112 and the bottom of the main frame 11. Specifically, the third space is defined between the second crossbeam 112, the bottom plate 13, part of the side plate 14, and part of the main frame 11 jointly enclose the third space.

[0063] By independently arranging the control unit 60 in the first space, the control components can be physically isolated from the water circuit components below, effectively reducing the risk of water leakage and condensation corrosion to electrical components, improving the safety and service life of the device's electrical operation, and facilitating electrical wiring, parameter debugging, and fault detection.

[0064] Arranging the heating distribution unit 40 in the first and second spaces allows it to work closely with the control unit 60 above, enabling rapid response and precise control of actuators such as valves and water pumps 412. It also allows it to connect with the adjacent expansion compensation unit 30 and constant pressure water supply unit 50 through the through space, shortening the length of internal connecting pipes and reducing the number of pipe bends and joints.

[0065] The expansion compensation unit 30 is arranged in the second and third spaces, and the constant pressure water supply unit 50 is arranged in the third space. This allows the core hydraulic components, such as system pressure regulation, water volume compensation, and expansion absorption, to be concentrated in the lower part of the unit body 10. On the one hand, this can conform to the pipeline routing of gravity flow and conventional hydraulic systems, improving the efficiency of water supply, pressure stabilization, and expansion compensation. On the other hand, it lowers the center of gravity of the entire unit, enhances the structural stability of the device during installation and operation, and provides sufficient operating space for external pipelines and maintenance operations.

[0066] The interconnected structure of the first, second, and third spaces facilitates unified planning and centralized layout of internal pipelines, simplifies assembly processes, and makes subsequent inspection, maintenance, and component replacement easier.

[0067] As can be seen from the above description, this embodiment, through the coordinated arrangement of the main frame 11, the first crossbeam 111 and the second crossbeam 112, divides the body 10 into a first space, a second space and a third space that are interconnected from top to bottom, thereby achieving a clear division and orderly layout of the internal functional areas of the device, providing a dedicated installation area for each functional unit, avoiding positional interference between different functional units during installation and operation, and ensuring the independence and stability of the operation of each component.

[0068] In some embodiments, the expansion compensation unit 30 includes a plurality of expansion tanks for connecting the first water storage unit 20, the plurality of expansion tanks including a first expansion tank 31, a second expansion tank 32 and a third expansion tank 33 arranged from top to bottom.

[0069] The first expansion tank 31 is located in the second space, and the second expansion tank 32 and the third expansion tank 33 are located in the third space. The orderly arrangement of multiple expansion tanks is achieved by utilizing the vertical layered space of the body 10. Under the premise of meeting the total expansion compensation volume required by the first water storage unit 20, the space occupied by the expansion compensation unit 30 in the horizontal direction of the body 10 is reduced.

[0070] Furthermore, the multiple expansion tanks are arranged in layers along the height direction, which can make the connecting pipelines between each expansion tank and the first water storage unit 20 uniform and neatly arranged, shortening the pipeline length and reducing redundant bends in the pipeline.

[0071] The first expansion tank 31, the second expansion tank 32, and the third expansion tank 33 all have pre-reserved disassembly and assembly spaces above them, with a height L1 of not less than 60mm. The disassembly and assembly space refers to the distance between the aforementioned expansion tanks and the main body 10, other pipelines, or components. This structure avoids spatial obstruction and interference between the aforementioned expansion tanks and the structures within the main body 10, facilitating the disassembly, assembly, and maintenance of the expansion tanks, and also facilitating gas replenishment operations.

[0072] In some embodiments, the distance between the third expansion tank 33 and the base plate 13 is not less than 5 mm (not marked because the distance is too small). This ensures that the third expansion tank 33 and the base plate 13 maintain a gap of not less than 5 mm, which reduces the possibility of water accumulation forming a water film and corroding the third expansion tank 33, thereby extending the service life of the third expansion tank 33.

[0073] In some embodiments, the control unit 60 includes a housing 61 and a control component (not shown) mounted within the housing 61. The lower end of the housing 61 is hinged to the body 10 and configured to be able to flip over to be located outside the body 10.

[0074] The control unit 60 is designed to be flip-out, which not only facilitates the operation and maintenance of the control unit 60, but also facilitates the operation and maintenance of the pipeline inside the control unit 60, greatly improving the efficiency of operation and maintenance.

[0075] The control unit 60 in this embodiment may also include a power distribution box 62, which is used to connect to the indoor power supply and then distribute it to the various electrical devices of the heat pump heating water system. The control component is used to control the normal operation of the various components inside the body 10.

[0076] In some embodiments, the lower end of the housing 61 is hinged to the inner side of the first crossbeam 111, and the first crossbeam 111 supports the housing 61 when the housing 61 is rotated outward to the maximum angle of the body 10.

[0077] This structure allows the control unit 60 to be flipped over and supported by a crossbeam, which improves the stability of the control unit 60 after flipping over, and also provides a stable operating platform for maintenance personnel, thereby improving the safety and convenience of maintenance.

[0078] In some embodiments, the expansion tank of this embodiment can be installed on the body 10 via a pull-out structure, which is configured to allow the expansion tank to be pulled out of the body 10.

[0079] Specifically, one or more of the first expansion tank 31, the second expansion tank 32, and the third expansion tank 33 may be equipped with a pull-out structure.

[0080] The expansion tank is installed to the machine body 10 via a pull-out structure, allowing it to be directly pulled out of the machine body 10 for inspection and replacement without removing other parts, thus facilitating the maintenance of the expansion tank.

[0081] In some embodiments, the pull-out structure includes a track and a slider (not shown in the figure). The track is mounted on the body 10, the slider is slidably connected to the track, and the expansion tank is mounted on the slider. The track and slider not only have a simple structure but also allow for smooth pulling, reducing maintenance difficulty and time costs.

[0082] In some embodiments, the body 10 includes a main frame 11, and the track component is a third crossbeam 113 mounted on the main frame 11 and providing support. The third crossbeam 113 has a slide rail that is slidably connected to the sliding component. By using the third crossbeam 113 as the support structure for both the track and the body 10, it achieves multiple functions in one unit, eliminating the need for a separate track and simplifying the structure.

[0083] Combined with appendix Figure 5 As shown, the heating distribution unit 40 in this embodiment includes a heating outlet pipe 41 and a heating return pipe 42. The heating outlet pipe 41 is provided with at least one heating outlet 4111 for connecting to a user's heating terminal, and the heating return pipe 42 is provided with at least one heating return outlet 4211 for connecting to a user's heating terminal. The independent heating outlet pipe 41 and return pipe can adapt to the connection needs of different user terminals.

[0084] Taking the structure of the two heating water outlets 4111 and two heating water return outlets 4211 in the figure as an example, specifically, the heating water outlet pipe 41 includes a main outlet pipe and two first sub-pipes 411. Each of the two first sub-pipes 411 is equipped with a water pump 412, and each of the two first sub-pipes 411 has a heating water outlet 4111 at one end. Similarly, the heating water return pipe 42 includes a main return pipe and two second sub-pipes 421, each of the two second sub-pipes 421 having a heating water return outlet 4211. One of the first sub-pipes 411 and one of the second sub-pipes 421 are connected by a second three-way valve 49.

[0085] In addition, the heating distribution unit 40 also includes a first connecting pipe 43, a first three-way valve 44, a water storage return flow path 45, a water storage outlet flow path 46, a heat pump outlet flow path 47, and a heat pump return flow path 48.

[0086] One end of the first connecting pipe 43 is connected to the heating outlet pipe 41, and the other end of the first connecting pipe 43 is connected to the first interface of the first three-way valve 44. The first connecting pipe 43 is used to return water to the heating outlet pipe 41.

[0087] The inlet of the water storage return flow path 45 is connected to the second interface of the three-way valve. The outlet of the water storage return flow path 45 is used to connect to the second water storage unit outside. The inlet of the heat pump outlet flow path 47 is used to connect to the heat pump device outside. The outlet of the heat pump outlet flow path 47 is connected to the third interface of the first three-way valve 44.

[0088] The heat pump outlet water flow path 47 is used to receive the inlet water of the heat pump device and distribute the inlet water to the storage water return flow path 45 and the first connecting pipe 43 through the first three-way valve 44, so that the storage water return flow path 45 can be used to return water to the second storage unit outside.

[0089] The inlet of the heat pump return water flow path 48 is connected to the first water storage unit 20, the outlet of the heat pump return water flow path 48 is used to connect the heat pump device, the inlet of the water storage outlet flow path 46 is connected to the second water storage unit, and the outlet of the water storage outlet flow path 46 is connected in parallel with the water supply pipeline of the constant pressure water supply unit 50 and is connected to the inlet of the heat pump return water flow path 48 together.

[0090] The water outlet path 46 is used to receive water from the second water storage unit and transport it to the heat pump return path 48. The heat pump return path 48 is used to receive water from the first water storage unit 20, the water outlet path 46, and the tap water replenishment path 51. This structure achieves controllable switching and connection integration between the first connecting pipe 43, the water storage return flow path 45, and the heat pump outlet flow path 47 through the first three-way valve 44. It can flexibly switch the heating output target and circulation path. At the same time, the first water storage unit 20 and the constant pressure water supply unit 50 are connected in parallel to the heat pump return end, integrating multiple functions such as heating, heat pump heating, and water storage, thereby improving the system integration and the flexibility of the operation mode.

[0091] In some embodiments, a first filter 481 is provided on the heat pump return water path 48. The first filter 481 may be a magnetic filter, which can effectively filter impurities in the return water, protect the heat pump device, and extend its service life.

[0092] In some embodiments, the outlet of the water storage return flow path 45, the inlet of the water storage outlet flow path 46, and the inlet of the heat pump outlet flow path 47 are located on the same side of the body 10.

[0093] By concentrating the interfaces connecting the external second water storage unit and the heat pump device on the same side of the unit body 10, the connection of external pipelines is simplified, making on-site installation faster.

[0094] It is understood that in this embodiment, "outlet" refers to the pipe port from which water flows out, and "inlet" refers to the pipe port from which water flows in.

[0095] Combined again with the appendix Figure 6 As shown, in some embodiments, the constant pressure water supply unit 50 includes a tap water supply path 51 and a tap water return path 52. The inlet of the tap water supply path 51 is used to connect to a tap water source, and the outlet of the tap water supply path 51 is used to connect to the heating distribution unit 40. The inlet of the tap water return path 52 is connected to the tap water supply path 51, and the outlet of the tap water return path 52 is used to discharge tap water.

[0096] This structure enables the constant pressure water supply unit 50 to form a dual-path structure integrating water inlet and outlet, which can realize automatic water supply and safe overflow, prevent tap water backflow, and ensure the safety and reliability of the device operation.

[0097] Combined with appendix Figure 3-6 As shown, in some embodiments, from the inlet to the outlet of the tap water supply flow path 51, a first safety valve 511, a check valve 512, a second filter 513, and an isolation drain valve 514 are sequentially provided on the tap water supply flow path 51. In this embodiment, the check valve 512 and the isolation drain valve 514 are configured to switch between open and closed states, and the second filter 513 is configured to be detachably connected to the tap water supply flow path 51.

[0098] The tap water supply flow path 51 is equipped with a first safety valve 511, a check valve 512, a second filter 513, and an isolation drain valve 514 in sequence, forming a complete function of protection, water supply, filtration, and sewage discharge, which effectively improves the quality of the water supply and the safety of the device.

[0099] Furthermore, when the second filter 513 needs to be repaired or replaced, the check valve 512 and the isolation drain valve 514 can be closed directly to stop the flow of water in the tap water supply path 51, and then the second filter 513 can be removed directly.

[0100] In some embodiments, the bottom of the second filter 513 is provided with a drain valve 5131, which can be a mechanical valve or an electronic valve. The drain valve 5131 can drain the accumulated water and release the pressure when the filter element of the second filter 513 is replaced, thereby reducing the possibility of contamination caused by residual water and improving the convenience of maintenance.

[0101] In some embodiments, the second filter 513 has a first connector 5132 for connecting the check valve 512 and a second connector 5133 for connecting the isolation drain valve 514. The first connector 5132 is detachably connected to the check valve 512, and the second connector 5133 is detachably connected to the isolation drain valve 514.

[0102] The first connector 5132 and the check valve 512 can be detachably connected by bolts, plugs, or snaps. Similarly, the second connector 5133 and the isolation drain valve 514 can also be detachably connected by bolts, plugs, or snaps. This detachable connection makes the second filter 513 easier to install and remove, allowing for filter element replacement without complicated tools, thus facilitating the maintenance and replacement of the second filter 513.

[0103] In some embodiments, both the first connector 5132 and the second connector 5133 are provided with an exhaust valve (this embodiment is not shown in the figure), or the isolation drain valve 514 is provided with an openable and closable exhaust port (this embodiment is not shown in the figure).

[0104] The vent valves of the first connector 5132 and the second connector 5133, or the isolation drain valve 514 with a vent, can effectively discharge the gas in the second filter 513, avoid air blockage, make the water flow smoother, and improve the filtration efficiency.

[0105] In some embodiments of the present invention, a fourth expansion tank 521 is provided on the tap water return flow path 52. The fourth expansion tank 521 can stabilize the pressure of the domestic water system, avoid pressure fluctuations from affecting the water usage experience, and improve the stability of the domestic water system.

[0106] In some embodiments, the fourth expansion tank 521 of this embodiment is located in the lower space and partially below the second crossbeam 112. The distance L2 between the fourth expansion tank 521 and the second crossbeam 112 along the height direction of the body 10 is not less than 60mm. The fourth expansion tank 521 has a top space of not less than 60mm to facilitate gas replenishment operation, while also optimizing the spatial layout and improving the compactness of the device.

[0107] Combined again with the appendix Figure 4 As shown, in some embodiments, the expansion compensation unit 30 includes a compensation pipeline 34 and a plurality of expansion tanks. One end of the compensation pipeline 34 is connected to the first water storage unit 20, and the other end is connected to the plurality of expansion tanks respectively.

[0108] The compensation pipeline 34 is equipped with a second safety valve 341, the second safety valve 341 is equipped with a first drain port 3411, the body 10 is equipped with a base plate 13, and the distance L3 between the first drain port 3411 and the base plate 13 is not less than 300mm.

[0109] Setting the discharge port of the second safety valve 341 at a position at least 300mm above the base plate 13 ensures that the discharged water is completely drained, reducing the possibility of residual water causing safety hazards and equipment corrosion.

[0110] In some embodiments, the check valve 512 is provided with a second drain port (not shown in the figure), and the first safety valve 511 is provided with a third drain port (not shown in the figure). Correspondingly, the body 10 of this embodiment is provided with a main drain port 16. The second drain port and the third drain port are both connected to the main drain port 16 by pipeline. The height of the first drain port 3411 on the body 10 is greater than the height of the main drain port 16 on the body 10.

[0111] This structure connects the discharge ports of multiple safety valves to the same drainage pipe for centralized drainage, simplifying the structure. Moreover, the height of the first drainage port 3411 is higher than that of the main drainage port 16, which can prevent backflow of drainage and improve the reliability of the overflow function.

[0112] In addition, combined with the appendix Figure 7-13 As shown, the heating end hydraulic device 100 in this embodiment also includes an insulation component 70. The insulation component 70 is used to install on the pipeline of the heating distribution unit 40, for example, it can be installed on the heating outlet pipeline 41, the heating return pipeline 42, the first connecting pipeline 43, the water storage return flow path 45, the water storage outlet flow path 46, and the heat pump outlet flow path 47. It can also be installed on valve bodies such as the first three-way valve 44 and the second three-way valve 49, in which case the valve bodies are also part of the pipeline of the heating distribution unit 40. Of course, the insulation component 70 can also be installed on the compensation pipeline 34 of the expansion compensation unit 30. (The attached diagram of this embodiment is not included in the provided text.) Figure 7-13 The explanation will be based on the example of heating water outlet pipe 41.

[0113] The insulation component 70 in this embodiment includes a first insulation element 71 and a second insulation element 72 connected to each other. The first insulation element 71 and the second insulation element 72 are connected and enclose a receiving space for accommodating the pipeline. The insulation component 70 can improve the insulation performance of the pipeline. The first insulation element 71 and the second insulation element 72 can be made of non-metallic heat insulation materials such as heat insulation foam, sponge, or foam.

[0114] In this embodiment, the shape of the accommodating space enclosed by the first insulation member 71 and the second insulation member 72 is consistent with the shape of the pipeline. For example, when the pipeline includes Figure 8-10 In the case of bends and straight pipes, the profile of the receiving space of one insulation component 70 is a bend, and the profile of the receiving space of the other insulation component 70 is a straight pipe. And when the pipeline includes... Figure 11-13 When the T-shaped tube is used, the outline of the accommodating space of the insulation component 70 is T-shaped.

[0115] Unlike related technologies that use an open sponge insulation component to wrap the pipeline, the first insulation component 71 and the second insulation component 72 in this embodiment are separate structures. They are not fixed by cable ties or tape, but are directly connected.

[0116] Specifically, the first insulation component 71 is provided with a first connecting part 711, and the second insulation component 72 is provided with a second connecting part 721. The first connecting part 711 is inserted into the second connecting part 721, and the connection between the first insulation component 71 and the second insulation component 72 is realized by plugging. This not only has a simple structure without the need for other installation structures, but also makes installation convenient.

[0117] In some embodiments, the first connecting portion 711 and the second connecting portion 721 are interference-fitted, which can improve the connection stability of the first connecting portion 711 and the second connecting portion 721.

[0118] Specifically, the first connecting part 711 can be a protrusion provided on the first insulation member 71, the protrusion forming a pin structure, and the second connecting part 721 can be a slot (or a socket), the radial dimension of the pin is larger than the radial dimension of the slot, thereby realizing the interference connection between the pin and the slot.

[0119] In some embodiments, the interference fit between the first connecting portion 711 and the second connecting portion 721 is 10% to 15%, and the interference fit is the ratio of the diameter difference between the first connecting portion 711 and the second connecting portion 721 to the diameter of the first connecting portion 711.

[0120] The aforementioned interference fit design ensures that the diameter difference between the first connecting part 711 and the second connecting part 721 is not too large, making it difficult to install them, and that the diameter difference between the first connecting part 711 and the second connecting part 721 is not too small, thus affecting the connection stability of the first insulation component 71 and the second insulation component 72. This allows for a tight connection of the first insulation component 71 and the second insulation component 72 after they are wrapped around the pipeline, reducing the risk of expansion and heat leakage.

[0121] In some embodiments, an installation gap 73 is reserved between the inner surface of the insulation component 70 enclosing the accommodating space and the outer surface of the pipe. The installation gap 73 is set such that the accommodating space is slightly larger than the size of the pipe, which can facilitate the insulation component 70 to wrap the pipe.

[0122] like Figure 10-12 As shown, when the pipeline consists of multiple pipe segments of different shapes, there are multiple insulation components 70 on the pipeline, and the multiple insulation components 70 are installed one-to-one on the multiple pipes of different shapes.

[0123] For example, when the T-shaped pipe mentioned above includes a straight pipe section 413 in the middle and variable diameter pipe sections 414 on both sides with variable diameter structures, the installation gap 73 between the variable diameter pipe section 414 and the insulation component 70 is greater than the installation gap 73 between the inner surface of the straight pipe section 413 and the insulation component 70.

[0124] For example, the installation gap 73 between the reducing pipe section 414 and the insulation component 70 can be 1 mm, while the installation gap 73 between the straight pipe section 413 and the insulation component 70 can be 0.5 mm.

[0125] This design addresses the different assembly needs of the straight pipe section 413 and the reducing pipe section 414 by differentiating the installation gap 73. This ensures that the straight pipe section 413 and the insulation component 70 have good fit and stability after installation, while also providing more ample assembly space for the reducing pipe section 414. This prevents installation difficulties caused by changes in the size of the reducing pipe section or installation deviations, and improves the adaptability and efficiency of the overall construction.

[0126] In some embodiments, the installation gap 73 ranges from 0.5 mm to 1 mm. Specifically, it can be 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, and 1 mm, etc., which will not be listed one by one in this embodiment.

[0127] By limiting the installation gap 73 within the aforementioned range, the insulation component 70 can completely wrap around the pipeline, avoiding installation interference or deformation of the insulation layer due to excessively small gaps. At the same time, it can prevent excessively large gaps from causing too many voids between the insulation material and the pipeline, affecting the insulation effect and structural stability, thus achieving the best balance between assembly convenience and insulation performance.

[0128] Combined again with the appendix Figure 9 and attached Figure 10 As shown, the heating household hydraulic device 100 also includes a temperature detection element 80, which is connected to the pipeline, and the insulation component 70 covers the temperature detection element 80.

[0129] The temperature sensing element 80 includes a metal pipe and a temperature sensor. The metal pipe is welded onto the pipeline, and the temperature sensor is installed inside the metal pipe. The first insulation element 71 or the second insulation element 72 has an outlet hole 75 for the temperature sensor's wiring. The temperature sensor is connected to the aforementioned control unit 60, enabling the control unit 60 to adjust the system temperature based on the temperature information detected by the temperature sensor.

[0130] The above structure uses temperature sensing element 80 to obtain temperature information of the pipeline, which facilitates the control of the heating system. By using insulation component 70 to wrap temperature sensing element 80, it can be ensured that the temperature measuring point and the main body of the pipeline are in a similar insulation environment, thereby improving the accuracy of detection.

[0131] In some embodiments, the inner surface of the insulation component 70 is provided with a relief groove 74 for accommodating a pipe extending axially, the relief groove 74 being used to accommodate a temperature sensing element 80.

[0132] The clearance groove 74 provides installation space for the temperature sensing element 80, preventing local deformation of the insulation layer caused by the protrusion of the temperature sensing element 80, which would affect the insulation effect. Moreover, compared with clearance holes, the clearance groove 74 can provide better insulation.

[0133] Combined with appendix Figure 9 As shown, the clearance groove 74 is larger than the temperature sensing element 80 along the axial direction and / or circumferential direction of the pipeline. This facilitates the temperature sensing element 80 to be accommodated within the clearance groove 74, preventing interference between the temperature sensing element 80 and the insulation component 70.

[0134] Combined with appendix Figure 13 As shown, in some embodiments, the central angle α of the pipeline corresponding to the clearance groove 74 is in the range of 100° to 150° along the circumferential direction of the pipeline.

[0135] When the central angle α is within the range of the above values, the clearance groove 74 can have sufficient width to accommodate the temperature sensing element 80, and the insulation performance of the insulation component 70 is not excessively weakened due to the excessively large opening angle of the clearance groove 74.

[0136] In some embodiments, the outer surface of the first insulation member 71 is provided with a foolproof marking (not shown in the figure), and the outer surface of the second insulation member 72 may also be provided with a foolproof marking to prevent the two from being installed in reverse. For example, when the first insulation member 71 is provided with the above-mentioned relief groove 74 but the second insulation member 72 is not provided with the relief groove 74, the second insulation member 72 is installed at the position with the temperature detection member 80 to reduce the possibility of the first insulation member 71 and the second insulation member 72 being installed in reverse.

[0137] The error-proof markings can be raised, recessed, or can be graphic markings, text markings, or color markings, etc., that serve as prompts.

[0138] In some embodiments, the thickness of the first insulation component 71 and the thickness of the second insulation component 72 are both greater than half the inner diameter of the pipe. By designing the thickness of the first insulation component 71 and the thickness of the second insulation component 72 to both be greater than half the inner diameter of the pipe, the joint between the first insulation component 71 and the second insulation component 72 has sufficient thickness and overlap when they are closed, effectively preventing heat leakage from the joint, thereby improving the continuity and reliability of the overall insulation.

[0139] Based on the aforementioned heating end hydraulic device 100, this embodiment also provides a heating and ventilation system (HVAC) device, including the aforementioned heating end hydraulic device 100. Other structures of the HVAC device (such as user heating terminals) are not described in this embodiment; please refer to relevant technologies.

[0140] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention 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 the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A hydraulic device for heating households, characterized in that, include: Organism; The first water storage unit is installed on the machine body and is used to store heating water; An expansion compensation unit is installed on the body and connected to the first water storage unit. The expansion compensation unit is configured to absorb the increased water volume after the first water storage unit expands due to heat. A heating distribution unit is installed on the body, connected to the first water storage unit, and used to connect to an external heat pump device and a user heating terminal. The heating distribution unit is used to distribute the hot water from the first water storage unit and the heat pump device to the user heating terminal. Among them, at least one of the expansion compensation unit and the heating distribution unit has an insulation component installed on its pipeline. The insulation component includes a first insulation element and a second insulation element connected to each other. The first insulation element and the second insulation element enclose a receiving space to accommodate the pipeline.

2. The heating household hydraulic device according to claim 1, characterized in that, The first insulation component has a first connecting part, and the second insulation component has a second connecting part, with the first connecting part inserted into the second connecting part.

3. The heating household hydraulic device according to claim 2, characterized in that, The first connecting part and the second connecting part are interference-fitted.

4. The heating household hydraulic device according to claim 3, characterized in that, The interference fit between the first connecting part and the second connecting part is 10% to 15%, where the interference fit is the ratio of the diameter difference between the first connecting part and the second connecting part before assembly to the diameter of the first connecting part.

5. The heating household hydraulic device according to claim 1, characterized in that, An installation gap is reserved between the inner surface of the insulation component enclosing the receiving space and the outer surface of the pipeline.

6. The heating household hydraulic device according to claim 5, characterized in that, The pipeline includes a straight pipe section and a variable diameter pipe section. The variable diameter pipe section is at least partially a variable diameter structure. The installation gap between the variable diameter pipe section and the insulation component is greater than the installation gap between the inner surface of the straight pipe section and the insulation component.

7. The heating household hydraulic device according to claim 5, characterized in that, The installation gap ranges from 0.5 mm to 1 mm.

8. The heating household hydraulic device according to claim 1, characterized in that, The heating household hydraulic device also includes a temperature detection element, which is connected to the pipeline, and the insulation component covers the temperature detection element.

9. The heating household hydraulic device according to claim 8, characterized in that, The inner surface of the insulation component is provided with a clearance groove for accommodating a portion extending axially along the pipeline, the clearance groove being used to accommodate the temperature sensing element.

10. The heating household hydraulic device according to claim 9, characterized in that, Along the axial direction of the pipeline and / or the circumferential direction of the pipeline, the size of the clearance groove is larger than the size of the temperature sensing element.

11. The heating household hydraulic device according to claim 10, characterized in that, Along the circumferential direction of the pipeline, the central angle of the pipeline corresponding to the clearance groove ranges from 100° to 150°.

12. The heating household hydraulic device according to claim 9, characterized in that, The outer surface of the first insulation component is provided with a foolproof marking section, and / or the outer surface of the second insulation component is provided with a foolproof marking section.

13. The heating household hydraulic device according to any one of claims 1-12, characterized in that, The thickness of both the first insulation component and the second insulation component is greater than half the inner diameter of the pipeline.

14. The heating household hydraulic device according to any one of claims 1-12, characterized in that, The heating household hydraulic device also includes a constant pressure water supply unit, which is installed on the machine body and is used to connect the heating distribution unit to the external tap water pipeline. The constant pressure water supply unit is used to supply tap water to the heating distribution unit.

15. The heating household hydraulic device according to claim 14, characterized in that, The body includes a main frame and a first crossbeam and a second crossbeam installed from top to bottom on the main frame. A first space is defined between the first crossbeam and the top of the main frame, a second space is defined between the second crossbeam and the first crossbeam, and a third space is defined between the second crossbeam and the bottom of the main frame. The first space, the second space, and the third space are interconnected. The heating distribution unit is located in the first space and the second space, the expansion compensation unit is located in the second space and the third space, and the constant pressure water supply unit is located in the third space.

16. The heating household hydraulic device according to any one of claims 1-12, characterized in that, The expansion compensation unit includes a compensation pipeline and multiple expansion tanks. One end of the compensation pipeline is connected to the first water storage unit, and the other end is connected to the multiple expansion tanks respectively. The insulation component is installed on the compensation pipeline.

17. The heating household hydraulic device according to claim 16, characterized in that, The expansion tank is installed in the machine body via a pull-out structure, which is configured to allow the expansion tank to be pulled out of the machine body.

18. The heating household hydraulic device according to claim 15, characterized in that, The heating household hydraulic device also includes a control unit installed in the first space, which is electrically connected to the expansion compensation unit, the heating distribution unit and the constant pressure water supply unit.

19. The heating household hydraulic device according to claim 18, characterized in that, The control unit includes a housing and control components mounted within the housing. The lower end of the housing is hinged to the body and configured to be flipped to the outside of the body.

20. A heating, ventilation, and air conditioning (HVAC) device, characterized in that, Includes the heating end hydraulic device as described in any one of claims 1-19.

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