Phase change energy storage device and heating and ventilation system

Abstract

The utility model discloses a phase change energy storage device and a heating and ventilation system.The phase change energy storage device comprises a machine body and a sealing piece, the machine body comprises a shell, a heat exchange assembly and a plurality of pipelines, the shell is provided with a leading-out hole and a plurality of through holes, the multiple pipelines communicate with the heat exchange assembly and are used for forming a medium flow channel for a heat exchange medium to flow, and the sealing piece is arranged in the shell; each pipeline extends to the outside of the shell through one through hole, the sealing piece is arranged between the pipelines and the through holes in a sealing mode, the sealing piece comprises multiple layers of sealing bodies arranged outside the shell in the axial direction of the pipelines, and in every two adjacent layers of sealing bodies, when observed in the axial direction of the pipelines, the number of the multiple layers of sealing bodies is larger than that of the multiple layers of sealing bodies. At least part of the body, facing the shell, of the sealing body is covered with the sealing body deviating from the shell, and the space between the pipeline and the through hole is sealed through the at least two layers of sealing bodies. The space between the pipeline and the through hole is sealed through the at least two layers of sealing bodies, when one sealing body is scratched, the other sealing body can keep good sealing, and the problem of sealing failure is reduced.

Description

Technical Field

[0001] This application relates to the field of heating, ventilation and air conditioning (HVAC) system technology, and in particular to a phase change energy storage device and HVAC system. Background Technology

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

[0003] Phase change energy storage technology is an energy storage and utilization technology based on the phase change properties of phase change materials. These materials absorb or release large amounts of heat when transitioning between different states (such as solid, liquid, and gas), thus achieving energy storage and release. Therefore, introducing phase change energy storage technology into HVAC systems allows for the storage and utilization of heat generated by heat pumps within these systems.

[0004] In related technologies, HVAC systems include phase change energy storage devices. These devices consist of a shell, heat exchange components, and piping. The heat exchange components are housed within the shell, and the piping passes through the shell and connects to the heat exchange components. Seals are installed at the pipe penetration points to prevent leakage. However, these seals are prone to scratches during assembly or use, which can easily lead to seal failure. Utility Model Content

[0005] The purpose of this application is to at least solve the problem of sealing failure at the location where pipes pass through. This purpose is achieved through the following technical solution:

[0006] A first aspect of this application discloses a phase change energy storage device, the phase change energy storage device comprising:

[0007] The body includes a shell, a heat exchange assembly, and multiple pipelines. The shell has multiple through holes, and the multiple pipelines are respectively connected to the heat exchange assembly and are used to form a medium flow channel for the flow of heat exchange medium. Each pipeline extends to the outside of the shell through one of the through holes.

[0008] A sealing element is provided between the pipeline and the through hole. Along the axial direction of the pipeline, the sealing element includes multiple layers of sealing bodies disposed outside the housing. In two adjacent layers of sealing bodies, when viewed along the axial direction of the pipeline, at least a portion of the body of the sealing body facing the housing is blocked by the sealing body facing away from the housing. At least two layers of sealing bodies seal the space between the pipeline and the through hole.

[0009] In this application, a sealing element is provided between the through hole of the housing and the pipeline. The multi-layer sealing body in the sealing element is arranged along the axial direction of the pipeline. In two adjacent sealing bodies, at least a portion of the body of the sealing body facing the housing is covered by the sealing body facing away from the housing. The space between the pipeline and the through hole is sealed by at least two sealing bodies, thereby achieving multi-layer sealing. When one sealing body is scratched, the other sealing body can maintain a good seal, thereby reducing the problem of sealing failure at the location where the pipeline passes through.

[0010] In addition, the HVAC system according to this application may also have the following additional technical features:

[0011] In some embodiments of this application, the seal further includes a sealing seat connected to the housing. Along the axial direction of the pipeline, at least one of the sealing bodies facing the housing is connected to the sealing seat in the multilayer sealing body.

[0012] In some embodiments of this application, an annular groove is provided on the outer peripheral surface of the sealing seat, and the body of the housing located on the outer peripheral side of the through hole is embedded in the annular groove.

[0013] In some embodiments of this application, along the axial direction of the pipeline, the annular groove includes two opposing sidewalls, at least one sidewall having a protrusion, the protrusion being arranged axially along the through hole and abutting against the housing.

[0014] In some embodiments of this application, a plurality of protrusions are provided on the same sidewall, and the plurality of protrusions are spaced apart along the radial direction of the through hole.

[0015] In some embodiments of this application, the sealing body is provided with a through hole through which the pipeline passes, wherein the sealing body that seals the space between the pipeline and the through hole has the hole wall abutting against the outer surface of the pipeline.

[0016] In some embodiments of this application, the number of sealing bodies is an even number greater than or equal to 4, and at least two adjacent layers of sealing bodies constitute a sealing group. There are multiple sealing groups. In each sealing group, the diameter of the through hole in each layer of sealing bodies is equal. In two adjacent sealing groups, the diameter of the through hole in the sealing group closer to the housing is greater than the diameter of the through hole in the sealing group farther from the housing.

[0017] In some embodiments of this application, the sealing body is an arched structure formed in a direction away from the housing.

[0018] In some embodiments of this application, two adjacent sealing bodies are connected and enclose a cavity, and the cavity has an opening on the side opposite to the housing.

[0019] In some embodiments of this application, the sealing element is a flexible element.

[0020] In some embodiments of this application, the housing is further provided with an outlet hole, and the phase change energy storage device further includes a temperature sensing component. The temperature sensing component includes a retaining member, a temperature sensing element, and a sealing structure. The retaining member is located at the position of the outlet hole and is connected to the housing. At least part of the retaining member is located inside the housing. The sealing structure is located at the junction of the retaining member and the housing and is arranged circumferentially around the outlet hole. The temperature sensing element includes an electrically connected temperature sensing part and a wire. The temperature sensing part is located inside the retaining member and obtains the temperature of the heat exchange component through the retaining member. The wire is led out to the outside of the housing at the position of the outlet hole.

[0021] A second aspect of this application provides a heating, ventilation, and air conditioning (HVAC) system comprising a phase change energy storage device as described above.

[0022] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0023] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a phase change energy storage device according to an embodiment of this application is shown.

[0025] Figure 2 for Figure 1 The exploded structure diagram of the phase change energy storage device shown in the figure;

[0026] Figure 3 for Figure 2 A magnified schematic diagram of part A in the phase change energy storage device shown in the figure;

[0027] Figure 4 for Figure 2 A schematic diagram of the temperature sensing component of the phase change energy storage device shown in the figure;

[0028] Figure 5 for Figure 4 The exploded structural diagram of the temperature sensing component shown;

[0029] Figure 6 for Figure 5 A schematic diagram of the retaining element in the temperature sensing assembly shown;

[0030] Figure 7 for Figure 6 A structural schematic diagram of the retainer shown from another perspective;

[0031] Figure 8 for Figure 7 A cross-sectional view of the retainer at point BB shown;

[0032] Figure 9 for Figure 1 A schematic diagram of the phase change energy storage device from another perspective;

[0033] Figure 10 for Figure 9 Cross-sectional view at CC of the phase change energy storage device shown;

[0034] Figure 11 for Figure 10 A magnified schematic diagram of section E of the phase change energy storage device shown in the figure;

[0035] Figure 12 for Figure 9 A cross-sectional view of the phase change energy storage device at point DD shown;

[0036] Figure 13 for Figure 12 A schematic diagram of the enlarged structure of section F of the phase change energy storage device shown in the figure;

[0037] Figure 14 for Figure 2 A schematic diagram of the sealing component of the phase change energy storage device shown in the figure;

[0038] Figure 15 for Figure 14 A structural schematic diagram of the seal shown from another perspective;

[0039] Figure 16 for Figure 15 The seal shown is a cross-sectional view at point GG.

[0040] The attached figures are labeled as follows:

[0041] 100. Phase change energy storage device;

[0042] 10. Organism;

[0043] 11. Shell; 111. Through hole; 112. Outlet hole; 113. Connection hole; 114. Second limiting structure; 12. Pipeline; 13. Heat exchange assembly; 14. Limiting element; 141. Through hole; 142. Limiting hole;

[0044] 20. Sealing components;

[0045] 21. Sealing seat; 211. Annular groove; 212. Protrusion; 22. Sealing body; 23. Cavity;

[0046] 30. Temperature sensing component;

[0047] 31. Retaining element; 311. Tube body; 312. First connecting seat; 3121. First end face; 3122. Receiving groove; 3123. Connecting part; 3124. First limiting structure; 313. Second connecting seat; 3131. Limiting protrusion; 314. Through-passage; 32. Temperature sensing element; 321. Wire; 322. Temperature sensing part; 33. Sealing structure;

[0048] X, axial direction; Y, radial direction. Detailed Implementation

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] like Figures 1 to 16 As shown, according to an embodiment of this application, a phase change energy storage device 100 is proposed, which includes a body 10 and a sealing element 20. The body 10 includes a heat exchange assembly 13, a shell 11, and multiple pipes 12. Each pipe 12 is connected to the heat exchange assembly 13, and the heat exchange assembly 13 forms multiple medium flow channels through the multiple pipes 12. Each medium flow channel can form a complete cycle for the flow of heat exchange medium. No two medium flow channels can be connected, but heat exchange can occur directly or indirectly.

[0054] Multiple through holes 111 are provided on the housing 11, the number of through holes 111 is consistent with the number of pipes 12. One end of each pipe 12 is connected to the heat exchange component 13, and the other end passes through a through hole 111 on the housing 11 and extends to the outside of the housing 11 so that the other end of the pipe 12 can be connected to other components of the HVAC equipment.

[0055] Pipe 12 is led out through through hole 111. The location of through hole 111 is where pipe 12 leads out. There is a gap between through hole 111 and the outer peripheral wall of pipe 12. In order to reduce water leakage at the outlet of pipe 12, a sealing element 20 is installed between through hole 111 and the outer peripheral wall of pipe 12 to seal the outlet of pipe 12.

[0056] The sealing element 20 includes multiple layers of sealing bodies 22. The multiple layers of sealing bodies 22 are all disposed outside the housing 11 and are arranged sequentially along the axial direction X of the pipe 12 (i.e., the axial direction of the through hole 111). When viewed along the axial direction of the pipe 12, in two adjacent layers of sealing bodies 22, the sealing body 22 on the side away from the housing 11 will at least partially block the sealing body 22 on the side facing the housing 11. At least two layers of sealing bodies 22 seal the outlet position of the pipe 12 (the space between the pipe 12 and the through hole 111).

[0057] It should be understood that, in the case of two adjacent sealing bodies 22, the sealing body 22 on the side away from the housing 11 at least partially obscuring the sealing body 22 on the side facing the housing 11 means that the projection of the sealing body 22 on the side away from the housing 11 onto the sealing body 22 on the side facing the housing 11 is located within the range of the sealing body 22 on the side facing the housing 11 or is flush with the edge of the sealing body 22 on the side facing the housing 11.

[0058] In addition, in this application, the number of sealing bodies 22 is at least two layers, specifically two, three, four, five, six, seven, eight, nine, ten, etc.

[0059] Furthermore, sealing the outlet position of the pipe 12 (the space between the pipe 12 and the through hole 111) with at least two sealing bodies 22 means that the sealing bodies 22 sealing the outlet position of the pipe 12 can be two, three, four, five, etc., and each sealing body 22 can individually seal the outlet position of the pipe 12.

[0060] Along the axial direction X of the pipeline 12, taking the position where two adjacent sealing bodies 22 lead out of the pipeline 12 as an example, at least part of the sealing body 22 facing the housing 11 is blocked by the sealing body 22 away from the housing 11, so that the two adjacent sealing bodies 22 form a double sealing structure 33. The sealing body 22 facing the housing 11 is the inner layer structure, and the sealing body 22 away from the housing 11 is the outer layer structure. The outer layer structure blocks the inner layer structure. When the outer layer structure is scratched, the inner layer structure can maintain the sealing effect.

[0061] In this application, a sealing element 20 is provided between the through hole of the housing 11 and the pipeline 12. The multi-layer sealing body 22 in the sealing element 20 is arranged along the axial direction X of the pipeline 12. In two adjacent sealing bodies 22, at least a portion of the body of the sealing body 22 facing the housing 11 is covered by the sealing body 22 facing away from the housing 11. The space between the pipeline 12 and the through hole 111 is sealed by at least two sealing bodies 22, thereby achieving multi-layer sealing. When one sealing body 22 is scratched, the other sealing body 22 can maintain a good seal, thereby reducing the problem of sealing failure at the location where the pipeline 12 passes through.

[0062] It should be noted that, in this application, the phase change energy storage device 100 is a technical device that utilizes the property of phase change materials (PCMs) to absorb or release a large amount of heat during a phase change process to store and release energy. Within a specific temperature range, phase change materials can transform from one physical state to another (such as from solid to liquid, or from liquid to solid), absorbing or releasing a large amount of latent heat in the process, thereby achieving energy storage and supply. For example, the phase change energy storage device 100 can utilize the absorption / release characteristics of phase change materials to heat tap water to provide people with comfortable domestic hot water.

[0063] The phase change energy storage device 100 is applied to a heating, ventilation, and air conditioning (HVAC) system. The HVAC system includes a heat pump outdoor unit and the phase change energy storage device 100. The phase change energy storage device includes a charging inlet and a charging outlet. The charging inlet is connected to the heat source outlet of the heat pump outdoor unit, and the charging outlet is connected to the heat source inlet of the heat pump outdoor unit. The heat pump outdoor unit and the phase change energy storage device 100 respectively form a charging flow path through the heat source outlet, the charging inlet, the charging outlet, and the heat source inlet. One or more charging flow paths can be arranged in the phase change energy storage module. In some embodiments, the phase change energy storage device 100 also includes an energy release outlet and an energy release inlet. The flow path between the energy release outlet and the energy release inlet forms an energy release flow path. One or more energy release flow paths can be arranged in the phase change energy storage device 100. The outdoor unit of the heat pump can be connected to the charging flow path through the charging inlet and charging outlet. The hot fluid in the outdoor unit can flow into the charging flow path, which can transfer heat to the phase change material in the phase change energy storage device 100. After the cold water flows into the energy release flow path through the energy release inlet, it can absorb the heat of the phase change material. After the cold water is heated into hot water, it can flow out through the energy release outlet for user use.

[0064] In some embodiments of this application, such as Figures 12 to 16As shown, the sealing element 20 includes a sealing seat 21 and a multi-layer sealing body 22. The multi-layer sealing body 22 is disposed on the sealing seat 21. When the sealing element 20 is installed in place, the sealing seat 21 is connected and fixed to the housing 11. At least two layers of the multi-layer sealing body 22 are matched with the outer peripheral wall of the pipeline 12 to seal the space between the pipeline 12 and the through hole 111.

[0065] Specifically, the multi-layer sealing bodies 22 are sequentially arranged along the axial direction X of the pipeline 12. Among the multi-layer sealing bodies 22, the sealing seat 21 is connected to at least one sealing body 22 facing the housing 11. After the sealing element 20 is installed in place, the multi-layer sealing bodies 22 are located outside the housing 11, and at least two sealing bodies 22 seal the space between the pipeline 12 and the through hole 111 of the housing 11. At least two sealing bodies 22 form a multi-layer sealing structure 33 at the outlet position of the pipeline 12 (the position where the through hole 111 is located). The multi-layer sealing structure 33 is used to improve the sealing performance and reduce the possibility of seal failure due to scratches.

[0066] It should be understood that the multi-layer sealing bodies 22 are arranged sequentially along the axial direction X of the pipeline 12. Among them, the sealing body 22 closest to the sealing seat 21 is connected to the sealing seat 21 (the connection method can be bonding or integral molding). Other sealing bodies 22 can be connected to the sealing seat 21 respectively (the connection method can be bonding or integral molding), or they can be connected layer by layer (that is, in two adjacent sealing bodies 22, the sealing body 22 on the side away from the shell 11 is connected to the sealing body 22 facing the shell 11).

[0067] In addition, the seal 20 seals the space between the through hole 111 of the housing 11 and the pipe 12, so that the housing 11 is isolated from the outside at the through hole 111, thereby reducing the possibility of water leakage at the through hole 111.

[0068] It should be noted that the sealing body 22 is connected to the sealing seat 21, so that the sealing element 20 forms a complete structure. This complete structure has a channel structure. When the sealing body 22 is installed in place, one end of the channel structure is connected to the inside of the housing 11 through the through hole 111, and the other end of the channel structure is connected to the outside. The sealing seat 21 of the sealing element 20 is connected to the housing 11, and the sealing seat 21 forms a seal in the circumference of the through hole 111 (one end of the channel structure is sealed). At least two layers of sealing bodies 22 abut against the outer circumferential surface of the pipe 12 and form a seal in the circumferential direction of the pipe 12 (the other end of the channel structure is sealed).

[0069] In addition, the mating methods between the sealing seat 21 and the housing 11 include, but are not limited to, snap-fit ​​or adhesive bonding.

[0070] In some embodiments of this application, such as Figure 2As shown, the through hole 111 on the housing 11 is circular (in other embodiments, the through hole 111 may also be elliptical or polygonal), and the shape of the sealing seat 21 is adapted to the shape of the through hole 111 and is cylindrical.

[0071] Among them, a groove is provided on the outer peripheral surface of the sealing seat 21. The groove is an annular groove 211 that surrounds the sealing seat 21. When the sealing member 20 is assembled, the edge of the housing 11 located at the through hole 111 is embedded in the annular groove 211 to achieve a sealed assembly between the sealing seat 21 and the housing 11.

[0072] It should be understood that when the sealing seat 21 is assembled with the housing 11, the two side walls of the annular groove 211 on the sealing seat 21 abut against the inner and outer surfaces of the housing 11, respectively. This arrangement can seal the position of the through hole 111.

[0073] In addition, the sealing seat 21 and the body of the housing 11 are engaged in a snap-fit ​​connection at the through hole 111 (that is, the edge of the housing 11 at the through hole 111 is embedded in the annular groove 211), which facilitates assembly and improves assembly efficiency, thereby speeding up the production cycle.

[0074] It should be noted that the cross-section of the annular groove 211 is a U-shaped structure, and the thickness of the shell 11 is slightly greater than the width of the annular groove 211 (the distance between the two oppositely arranged side walls of the U-shaped structure). This arrangement allows the annular groove 211 to undergo elastic deformation when the body of the shell 11 located on the outer periphery of the through hole 111 is embedded in the annular groove 211, increasing the resistance between it and the shell 11, thereby improving the sealing effect.

[0075] In addition, when the body of the housing 11 located on the outer periphery of the through hole 111 is embedded in the annular groove 211, the inner peripheral wall of the through hole 111 abuts against the bottom surface of the annular groove 211, which can further improve the sealing effect.

[0076] In some embodiments of this application, such as Figure 13 and Figure 16 As shown, the cross-section of the annular groove 211 is a U-shaped structure. The annular groove 211 has two oppositely arranged sidewalls in the axial direction X of the pipe 12. The two sidewalls are parallel or at an angle (when the two sidewalls are at an angle, the distance between the two sidewalls at the opening position of the annular groove 211 is less than the distance at the bottom position of the annular groove 211).

[0077] In this design, at least one of the two sidewalls of the annular groove 211 is provided with a protrusion 212, which protrudes 212 toward the interior of the annular groove 211. When the body of the housing 11 located on the outer periphery of the through hole 111 is embedded in the annular groove 211, the housing 11 abuts against the sidewall of the annular groove 211 and the protrusion 212 respectively. By providing the protrusion 212, the sealing path between the sealing seat 21 and the housing 11 is increased, thereby further improving the sealing effect.

[0078] It should be understood that the protrusion 212 extends along the extension direction of the annular groove 211, and the extension length of the protrusion 212 is equal to the circumferential length of the annular groove 211. In this way, the annular groove 211 can improve the sealing performance throughout the entire circumference, and further improve the sealing effect between it and the housing 11.

[0079] In addition, after the mounting base is installed on the housing 11, the protrusion 212 abuts against the housing 11 and undergoes elastic deformation, which increases the contact strength between the protrusion 212 and the housing 11, and at the same time increases the contact area between the protrusion 212 and the housing 11.

[0080] It should be noted that when both sides of the annular groove 211 are provided with protrusions 212, the protrusions 212 on the two side walls can be arranged opposite each other or staggered.

[0081] Furthermore, the cross-section of the protrusion 212 can be semi-circular, triangular, trapezoidal, or rectangular, etc. Preferably, the dimension of the cross-section of the protrusion 212 at the end connected to the sidewall is larger than the dimension at the end away from the sidewall, thereby improving the ease of processing.

[0082] Furthermore, on the same sidewall of the annular groove 211, the number of protrusions 212 can be one, two, three, four, five, etc.

[0083] In some embodiments of this application, such as Figures 13 to 16 As shown, an annular groove 211 is provided on the sealing seat 21 of the sealing member 20. The annular groove 211 is arranged along the circumference of the sealing seat 21 and surrounds the sealing seat 21. A protrusion 212 is provided on the side wall of the annular groove 211. The protrusion 212 surrounds the sealing member 20 and forms a ring structure. They are located on the same side wall. There are multiple protrusions 212. The multiple protrusions 212 are arranged at intervals along the radial direction Y of the through hole 111, and the ring structure formed by the multiple protrusions 212 is concentrically arranged.

[0084] Specifically, the multiple ring structures formed by the multiple protrusions 212 are arranged concentrically at intervals along the radial direction Y of the through hole 111. When the seal 20 is installed in place on the housing 11, the protrusions 212 undergo elastic deformation and abut against the housing 11. By setting multiple protrusions 212, the sealing path between the sealing seat 21 and the housing 11 is further increased, thereby further improving the sealing effect.

[0085] It should be noted that the multiple concentric ring structures formed by the multiple protrusions 212 can be spaced at equal or unequal distances along the radial direction Y of the through hole 111. As a preferred embodiment, the multiple concentric rings are spaced at equal distances to facilitate manufacturing.

[0086] In some embodiments of this application, such as Figures 13 to 16 As shown, the sealing element 20 includes multiple sealing bodies 22. The multiple sealing bodies 22 are all disposed outside the housing 11 and are arranged sequentially along the axial direction X of the pipeline 12. Each sealing body 22 has a through hole, and multiple through holes are arranged coaxially.

[0087] Specifically, after the seal 20 is installed in place, the sealing seat 21 of the seal 20 cooperates with the body of the housing 11 located at the through hole 111 (the body of the housing 11 and the radially outer side of the through hole 111 are embedded in the annular groove 211 of the sealing seat 21). The sealing seat 21 has a circular structure. The through holes on each layer of sealing body 22 and the circular structure on the sealing seat 21 form a channel for the pipeline 12 to pass through. The sealing seat 21 seals the edge position of the through hole 111 of the housing 11. The hole walls of the through holes 111 of at least two layers of sealing body 22 abut against the outer peripheral wall of the pipeline 12, thereby forming a seal on the circumferential position of the pipeline 12.

[0088] By providing a through hole in the sealing body 22 and using the hole wall to abut against the outer peripheral wall of the pipe 12, the outer peripheral side of the pipe 12 is sealed. This arrangement can effectively seal the position of the pipe 12. At the same time, the sealing method using the hole wall to abut against the outer peripheral wall of the pipe 12 is simple in structure and easy to assemble.

[0089] It should be understood that the diameter of the through hole on the sealing body 22 that seals the pipe 12 is slightly smaller than the diameter of the pipe 12. When the pipe 12 passes through the through hole on the sealing body 22, the through hole undergoes elastic deformation, thereby increasing the contact strength between the hole wall and the pipe 12, and thus improving the sealing performance between the pipe 12 and the sealing body 22.

[0090] In some embodiments of this application, such as Figure 16As shown, the number of sealing bodies 22 in the sealing element 20 is multiple, and the number of sealing bodies 22 is even and greater than or equal to 4. Multiple layers of adjacent sealing bodies 22 constitute a sealing group. In each sealing group, the diameter of the through holes of all sealing layers is the same. In two adjacent sealing groups, the diameter of the through hole in the sealing group closer to the housing 11 is greater than the diameter of the through hole in the sealing group farther away from the housing 11.

[0091] Specifically, the sealing element 20 includes a sealing seat 21 and multiple sealing bodies 22. The multiple sealing bodies 22 are arranged sequentially along the axial direction X of the pipeline 12. Among the multiple sealing bodies 22, at least the sealing body 22 closest to the sealing seat 21 is connected to the sealing seat 21. Along the axial direction X of the pipeline 12, at least two adjacent sealing bodies 22 constitute a sealing group. Multiple sealing groups are arranged sequentially along the axial direction X of the pipeline 12. When sealing the outlet position of the pipeline 12, the diameter of the pipeline 12 is first obtained, and the diameter of the through hole shown in the diagram is matched with the diameter of the pipeline 12 to find the sealing group that is suitable for the current pipeline 12. Then, the sealing group on the side of the sealing group that is suitable for the current pipeline 12 away from the housing 11 is removed (by cutting or trimming). Then, the pipeline 12 is inserted into the through hole 111 of the suitable sealing group, so that the inner wall of the through hole 111 abuts against the outer peripheral wall of the pipeline 12, thereby achieving the sealing of the pipeline 12.

[0092] By setting the diameter of the through hole in the sealing group closer to the housing 11 to be larger than the diameter of the through hole in the sealing group farther from the housing 11 in two adjacent sealing groups, the current seal 20 can be adapted to pipes of different diameters, thereby improving the versatility of the seal 20.

[0093] It should be noted that the number of sealing bodies 22 in the same sealing group can be two, three, four, five, six, etc. When the matching sealing group seals the pipeline 12, the hole walls of the through holes 111 of all sealing bodies 22 in the same sealing group abut against the outer peripheral wall of the pipeline 12, thereby achieving individual sealing of the pipeline 12 by each layer of sealing body 22 in the same sealing group. This ensures that even if one layer of sealing body 22 is scratched, the other sealing bodies 22 can still effectively seal the position of the pipeline 12, thus improving the sealing effect of the sealing element 20.

[0094] In some embodiments of this application, such as Figures 13 to 16 As shown, the sealing element 20 includes a sealing seat 21 and a multi-layer sealing body 22. The multi-layer sealing bodies 22 are arranged sequentially along the axial direction X of the pipeline 12. Among the multi-layer sealing bodies 22, at least the sealing body 22 that is closest to the sealing seat 21 is connected to the sealing seat 21. The sealing body 22 is an arched structure formed in the direction away from the housing 11.

[0095] Specifically, after the seal 20 is installed in place, the sealing seat 21 is connected and fixed to the housing 11. The multi-layer sealing body 22 is set on the outside of the housing 11. In the direction from the inside to the outside of the housing 11, among two adjacent layers of sealing body 22, the sealing body 22 on the side away from the housing 11 is connected to the sealing body 22 on the side facing the housing 11. The multi-layer sealing body 22 forms a "tower-like structure". This arrangement allows the multi-layer sealing body 22 to form an overlapping arrangement, thereby providing multi-layer protection for the pipeline 12 and reducing the possibility of seal failure due to scratches on one layer of sealing body 22.

[0096] It should be understood that in this application, the sealing body 22 is designed as an arched structure, which can reduce the possibility of water accumulation on the sealing body 22 and further reduce the possibility of water leakage at the sealing element 20.

[0097] In addition, setting the sealing body 22 as an arched structure can increase the structural strength of the sealing body 22 and reduce the possibility of sealing failure due to deformation caused by poor strength of the sealing body 22.

[0098] In some embodiments of this application, such as Figures 13 to 16 As shown, the sealing element 20 includes a sealing seat 21 and multiple sealing bodies 22. The multiple sealing bodies 22 are arranged sequentially along the axial direction X of the pipeline 12. Among the multiple sealing bodies 22, the sealing body 22 closest to the sealing seat 21 is connected to the sealing seat 21. In the other two adjacent sealing bodies 22, the sealing body 22 on the side away from the housing 11 is connected to the sealing body 22 on the side facing the housing 11. The multiple sealing bodies 22 form a "tower-like structure". Each sealing body 22 is an arched structure formed in the direction away from the housing 11. Adjacent sealing bodies 22 are nested. One end of the sealing body 22 on the side away from the housing 11 is connected to the sealing body 22 on the side facing the housing 11. The other positions are spaced apart from the sealing body 22 on the side facing the housing 11, so that a cavity 23 is formed between adjacent sealing bodies 22. The ends of the adjacent two layers on the side away from the housing 11 are spaced apart and form the opening of the cavity 23.

[0099] By providing a cavity 23 between two adjacent sealing layers 22, the distance between the two adjacent sealing layers 22 can be increased, reducing the situation where the inner sealing layer 22 is scratched when the outer sealing layer 22 is scratched, thereby further improving the sealing performance of the seal 20.

[0100] In some embodiments of this application, the seal 20 is configured as a flexible element. Specifically, configuring the seal 20 as a flexible element allows the seal 20 to undergo elastic deformation when subjected to external force. This elastic deformation of the seal 20 can be used to improve the adhesion between the seal 20 and the sealing position, thereby further improving the sealing performance of the desired sealing position.

[0101] It should be understood that the seal 20 is a one-piece structure, and this one-piece seal 20 can be manufactured by means of hot pressing or other methods.

[0102] It should be noted that the seal 20 can be an intersecting part or a silicone part.

[0103] In some embodiments of this application, such as Figures 1 to 11 As shown, the phase change energy storage device 100 also includes a temperature sensing component 30, which includes a temperature sensing element 32, a retaining element 31, and a sealing structure 33. An outlet hole 112 is provided on the housing 11. The retaining element 31 is connected to the housing 11 and is located at the outlet hole 112. At least a part of the body of the housing 11 is located inside the housing 11. The sealing structure 33 is arranged circumferentially around the outlet hole 112 and seals the joint between the retaining element 31 and the housing 11.

[0104] The temperature sensing element 32 includes a wire body 321 and a temperature sensing part 322. The temperature sensing part 322 is electrically connected to the wire body 321 and is disposed inside the retaining member 31. The temperature sensing element 32 obtains the temperature of the heat exchange assembly 13 through the retaining member 31. One end of the wire body 321 is connected to the temperature sensing part 322, and the other end is led out to the outside of the housing 11 at the outlet hole 112.

[0105] It should be understood that the temperature sensing element 322 being located inside the retaining member 31 means that the temperature sensing element 322 is housed inside the retaining member 31 and cannot be directly connected to the outside. One end of the wire 321 is electrically connected to the temperature sensing element 322, and the other end is led out to the outside of the housing 11 at the lead-out hole 112. The other end of the wire 321 can be electrically connected to the control device so that the temperature sensing element can transmit the acquired temperature parameters to the control device, allowing the control device to control the phase change energy storage device 100 according to the temperature parameters.

[0106] In addition, the retainer 31 is a good conductor of heat, that is, external heat can be sensed by the temperature sensing part 322 through the retainer 31, so that the temperature sensing part 322 can sense the external temperature through the retainer 31.

[0107] Furthermore, a portion of the retaining member 31 extends into the housing 11. For example, if the retaining member 31 extends along the height of the housing 11, it can extend to a specific position along the height of the housing 11 (e.g., one-quarter, one-half, or three-quarters of the height). The position of the temperature sensing part 322 within the retaining member 31 can be adjusted as needed to effectively acquire the temperature at the desired location, enabling control of the phase change energy storage device 100 based on the temperature sensed by the temperature sensing part 322. Simultaneously, the retaining member 31 is inserted into the phase change material. By adjusting the preset insertion depth of the retaining member 31 within the phase change material, the temperature sensing part 322 can acquire the temperature at the preset depth, thereby accurately monitoring the temperature change of the phase change material in a designated area within the phase change energy storage device 100.

[0108] It should be noted that the shell 11 has a cubic structure and an internal cavity is formed inside the shell 11. The heat exchange component 13 and the phase change material are both disposed in the cavity. The heat exchange component 13 is embedded in the phase change material. It should be noted that the heat exchange component 13 includes multiple sub-heat exchangers. There is a gap between two adjacent sub-heat exchangers, and the phase change material can fill the gap, so that the heat exchange component 13 can fully contact the phase change material. Thus, the heat exchange component 13 can conduct heat with the phase change material, so that the heat exchange component 13 can exchange heat with the phase change material.

[0109] In addition, the temperature sensing part 322 can acquire temperature parameters, such as a temperature sensor.

[0110] In this application, the wire 321 of the temperature sensing element 32 is led out at the lead-out hole 112. The sealing structure 33 is disposed between the retainer 31 and the housing 11. The sealing structure 33 seals the joint position of the retainer 31 and the housing 11 along the circumferential direction of the lead-out hole 112, thereby improving the sealing performance at the lead-out hole 112 position, reducing the temperature at which water leakage occurs at the lead-out position of the wire 321, and thus reducing the failure rate of the phase change energy storage device 100.

[0111] In some embodiments of this application, a through-channel 314 including a first end and a second end is provided on the retainer 31. The first end and the second end are arranged opposite to each other. The first end face 3121 is disposed inside the housing 11, and the second end face is disposed outside the housing 11. The first end is a closed structure, and the second end is an open structure. The temperature sensing part 322 of the temperature sensing element 32 is inserted into the through-channel 314. One end of the wire 321 of the temperature sensing element 32 is electrically connected to the temperature sensing part 322, and the other end is led out to the outside of the housing 11 through the second end of the through-channel 314.

[0112] By setting the through-channel 314, the temperature sensing part 322 can be effectively installed inside the retainer 31. At the same time, the through-channel 314 is a straight channel structure, and the temperature sensing part 322 can be set at a certain position in the through-channel 314 as needed, thereby improving the installation accuracy of the temperature sensing part 322.

[0113] It should be noted that in the through-channel 314, a limiting structure is provided at the installation position of the temperature sensing part 322. After the temperature sensing part 322 is installed in place in the through-channel 314, the limiting structure cooperates with the temperature sensing part 322 to fix the temperature sensing part 322 in the installation position, thereby improving the installation accuracy of the temperature sensing component.

[0114] The limiting structure can be matched with the temperature sensing part 322. For example, the limiting structure is an annular protrusion 212 provided in the circumferential direction of the through channel 314, and an annular groove is provided on the outer peripheral surface of the temperature sensing part 322. When the temperature sensing part 322 is installed in place, the annular protrusion 212 is embedded in the annular groove, thereby fixing the temperature sensing part 322.

[0115] In addition, a sealing structure 33 is provided between the second port and the line body 321. The sealing structure 33 seals the position between the line body 321 and the second port to reduce the flow of water into the through-channel 314 through the second port. The sealing structure 33 can be a sealing ring or sealant, etc.

[0116] In some embodiments of this application, such as Figures 1 to 11 As shown, the temperature sensing component 30 includes a retainer 31, a sealing structure 33, and a temperature sensing element 32. An outlet hole 112 is provided on the housing 11. The retainer 31 is connected to the housing 11 and is located at the outlet hole 112. At least a part of the body of the housing 11 is located inside the housing 11. The sealing structure 33 is arranged circumferentially around the outlet hole 112 and seals the joint between the retainer 31 and the housing 11.

[0117] Specifically, the retainer 31 includes a first connecting seat 312 and a tube 311. The hollow structure inside the tube 311 forms a through-passage 314. One end (first end) of the tube 311 is a closed structure, and the other end (second end) is an open structure. The first connecting seat 312 is disposed on the tube 311. Along the axial direction X of the tube 311, the distance between the first connecting seat 312 and the closed end (first end) of the tube 311 is greater than the distance between the first connecting seat 312 and the open end (second end) of the tube 311. The first connecting seat 312 is connected and fixed to the housing 11. The sealing structure 33 is sealed between the first connecting seat 312 and the housing 11. The sealing structure 33 is disposed around the outlet hole 112. At least part of the tube 311 is disposed inside the housing 11. The tube 311 and the outlet hole 112 are coaxially disposed.

[0118] It should be understood that the diameter of the outlet hole 112 is greater than or equal to the outer diameter of the tube body 311, so that when part of the tube body 311 is located outside the shell 11, the tube body 311 passes through the outlet hole 112, the projection of the connecting seat on the shell is located outside the outlet hole 112, and the sealing structure 33 is set between the connecting seat and the shell 11, which can form a seal on the radial outer side of the outlet hole 112, reducing the flow of water into the interior of the shell 11 from the outlet hole 112, thereby reducing the failure of the phase change energy storage device 100 caused by the outlet position of the water self-sensing element 32's wire 321 entering the interior of the shell 11.

[0119] It should be noted that the first connecting seat 312 can be fixed on the outer surface of the housing 11 or on the inner surface of the housing 11.

[0120] In addition, the connection methods between the first connecting seat 312 and the housing 11 include, but are not limited to, bonding, welding, snap-fitting, or connection through connectors. The tube body 311 has a straight tube structure, and the extension direction of the tube body 311 can be consistent with the height direction of the housing 11, or set at an angle to the height direction of the housing 11.

[0121] Furthermore, the first connecting seat 312 can be an integral structure with the tube body 311, or it can be a separate structure from the tube body 311. When the first connecting seat 312 and the tube body 311 are an integral structure, they are manufactured by integral molding. When the first connecting seat 312 and the tube body 311 are separate structures, they are manufactured separately and then connected and fixed together.

[0122] In this application, the tube body 311 includes two oppositely arranged ends, one end (first end) is disposed inside the housing 11, and the other end (second end) passes through the lead-out hole 112 or abuts against the inner wall of the housing 11.

[0123] In some embodiments of this application, a portion of the tube 311 (the portion with the first end, i.e., the closed end) is disposed inside the housing 11, while another portion of the tube 311 (the portion with the second end, i.e., the open end) is disposed outside the housing 11. A first connecting seat 312 is fixed to the outer circumferential surface of the tube 311 and is disposed inside the housing 11 and connected to the inner wall of the housing 11. The other portion of the tube 311 extends to the outside of the housing 11 through the lead-out hole 112. The structure of the tube 311 located outside the housing 11 is used for assembly and connection with other components of the phase change energy storage device 100, thereby improving the fixing strength of the retainer 31 and also enabling the installation of other components of the phase change energy storage device 100.

[0124] In some embodiments of this application, such as Figure 10 and Figure 11As shown, the retainer 31 is disposed inside the housing 11. One end of the tube 311 (the first end, i.e., the closed end) is suspended inside the housing 11, and the other end of the tube 311 (the open end) abuts against the inner wall of the housing 11. The tube 311 is coaxially arranged with the outlet hole 112. The first connecting seat 312 is connected to the outer circumferential surface of the tube 311 and connected to the inner wall of the housing 11. The first connecting seat 312 is arranged around the tube 311. A sealing structure 33 is provided between the first connecting seat 312 and the housing 11. The sealing structure 33 is arranged around the through hole 111.

[0125] By configuring the retainer 31, the sealing structure 33 can seal the joint between the first connecting seat 312 and the housing 11 in the circumferential direction of the outlet hole 112, thereby improving the sealing performance of the outlet hole 112 and reducing the possibility of water leakage at the outlet hole 112 causing the phase change energy storage device 100 to malfunction.

[0126] It should be noted that in this application, the surface of the first connecting seat 312 facing the inner wall of the housing 11 is the first end face 3121. The first end face 3121 is flush with the other end of the tube body 311. When the other end of the tube body 311 abuts against the inner wall of the housing 11, the first end face 3121 also abuts against the inner wall of the housing 11. This arrangement can improve the fit between the retaining member 31 and the housing 11, thereby further improving the sealing performance at the outlet hole 112.

[0127] In addition, the sealing structure 33 can be a sealing ring or a sealant, etc.

[0128] In some embodiments of this application, such as Figure 5 As shown, the sealing structure 33 is configured as a sealing ring, the retainer 31 is disposed inside the housing 11, the sealing ring is sleeved on the outside of the pipe 12 and arranged radially around the outlet hole 112. After the retainer 31 is connected to the housing 11, the sealing ring is clamped between the inner wall of the housing 11 and the first end face 3121 of the first connecting seat 312.

[0129] Specifically, the sealing ring is a flexible structure that can undergo elastic deformation. When the first connecting seat 312 is connected to the inner wall of the housing 11, the sealing ring is sandwiched between the first end face 3121 of the first connecting seat 312 and the inner wall of the housing 11. At this time, the sealing ring undergoes elastic deformation. The elastically deformed sealing ring seals the space between the first end face 3121 and the inner wall of the housing 11, thereby achieving a seal on the radially outer side of the outlet hole 112 and reducing the possibility of water leakage at the outlet hole 112.

[0130] It should be noted that the sealing ring can be a rubber ring or a silicone ring, etc.

[0131] In some embodiments of this application, such as Figures 4 to 8 As shown, a receiving groove 3122 is provided on at least one of the inner wall of the housing 11 and the first end face 3121 of the first connecting seat 312. The receiving groove 3122 is an annular groove 211, which surrounds the lead-out hole 112. A portion of the sealing ring is embedded in the receiving groove 3122.

[0132] By setting the receiving groove 3122, the position of the sealing ring is limited by the receiving groove 3122, reducing the possibility of displacement of the sealing ring, thereby improving the installation accuracy of the sealing ring, thus improving the sealing performance and reducing the possibility of leakage points at the outlet hole 112.

[0133] It should be understood that the receiving slot 3122 may be formed only on the first end face 3121 of the first connecting seat 312, or only on the inner wall of the housing 11, or it may be formed on both the first end face 3121 and the inner wall of the housing 11.

[0134] For example, the receiving groove 3122 is only formed on the first connecting seat 312, and part of the sealing ring is embedded in the receiving groove 3122. When the first connecting seat 312 is connected to the housing 11, the body of the sealing ring located outside the receiving groove 3122 is squeezed by the inner wall of the housing 11 and undergoes elastic deformation to achieve sealing.

[0135] In some embodiments of this application, such as Figure 10 and Figure 11 As shown, the retainer 31 is disposed inside the housing 11. One end of the tube 311 (the first end, i.e., the closed end) is suspended inside the housing 11, and the other end of the tube 311 (the open end) abuts against the inner wall of the housing 11. The tube 311 is coaxially arranged with the outlet hole 112. The first connecting seat 312 is connected to the outer circumferential surface of the tube 311 and is arranged around the tube 311. The side of the first connecting seat 312 facing the inner wall of the housing 11 is the first end face 3121. The first end face 3121 is flush with the other end of the tube 311 and abuts against and is connected to the inner wall of the housing 11. The other end of the tube 311 is coaxially arranged with the outlet hole 112. A sealing structure 33 is provided between the first connecting seat 312 and the housing 11 and is arranged around the through hole 111.

[0136] Specifically, a connecting portion 3123 is provided on the first end face 3121, and the number of connecting portions 3123 is at least one. In the radial direction Y of the tube body 311, the connecting portion 3123 is disposed between the sealing structure 33 and the tube body 311. A connecting hole 113 is provided on the housing 11, and the number of connecting holes 113 is the same as the number of connecting portions 3123, with each connecting hole 113 corresponding to one connecting portion 3123. The temperature sensing assembly 30 includes fasteners (such as screws). On the outside of the housing 11, a portion of the fastener passes through the connecting hole 113 and engages with the connecting portion 3123 to fix the first connecting seat 312 to the housing 11.

[0137] By providing the connecting part 3123, the connecting hole 113, and the fastener, the retaining member 31 can be installed and fixed on the outside of the housing 11, thereby improving the ease of assembly.

[0138] In addition, in the radial direction Y of the tube body 311, the connecting part 3123 is disposed between the sealing structure 33 and the tube body 311. The sealing structure 33 forms a seal on the outside of the connecting part 3123, eliminating the need for separate sealing treatment at the connection position, which simplifies the structure and reduces manufacturing costs.

[0139] It should be noted that the connecting part 3123 has a hole-like structure (a non-through hole), and the connection method between the fastener and the connecting part 3123 includes, but is not limited to, threaded connection, adhesive or snap-fit.

[0140] In addition, the number of connecting parts 3123 can be one, two, three, four, five, six, etc. When there are multiple connecting parts 3123, the connecting parts 3123 are arranged at intervals along the circumference of the tube body 311. The number of connecting holes 113 is the same as the number of connecting parts 3123, and they are arranged in a one-to-one correspondence. The number of fasteners is also the same as the number of connecting parts 3123. By setting multiple connecting parts 3123, the connection positions between the first connecting seat 312 and the housing 11 are increased, thereby improving the connection strength and stability between the first connecting seat 312 and the housing 11, and effectively improving the sealing performance of the outlet hole 112 position.

[0141] In some embodiments of this application, such as Figure 10 and Figure 11As shown, the retainer 31 is disposed inside the housing 11. One end of the tube 311 (the first end, i.e., the closed end) is suspended inside the housing 11, and the other end of the tube 311 (the open end) abuts against the inner wall of the housing 11. The tube 311 is coaxially arranged with the outlet hole 112. The first connecting seat 312 is connected to the outer circumferential surface of the tube 311 and is arranged around the tube 311. The side of the first connecting seat 312 facing the inner wall of the housing 11 is the first end face 3121. The first end face 3121 is flush with the other end of the tube 311 and abuts against and is connected to the inner wall of the housing 11. The other end of the tube 311 is coaxially arranged with the outlet hole 112. A sealing structure 33 is provided between the first connecting seat 312 and the housing 11 and is arranged around the through hole 111. A first limiting structure 3124 is provided on the first end face 3121. Along the radial direction Y of the tube body 311, the first limiting structure 3124 is located between the tube body 311 and the sealing structure 33. A second limiting structure 114 is provided on the shell 11 to cooperate with the first limiting structure 3124.

[0142] By setting up a first limiting structure 3124 and a second limiting structure 114, the positioning installation of the first connecting seat 312 is realized during the installation process, which improves the installation accuracy of the first connecting seat 312 and facilitates the assembly of the first connecting seat 312, thereby effectively improving the assembly efficiency.

[0143] In addition, in the radial direction Y of the tube body 311, the first limiting structure 3124 is located between the sealing structure 33 and the tube body 311. The sealing structure 33 forms a seal on the outside of the first limiting structure 3124, eliminating the need for separate sealing treatment at the limiting position, which simplifies the structure and reduces manufacturing costs.

[0144] It should be noted that the first limiting structure 3124 and the second limiting structure 114 are in a concave-convex fit. The limiting structure formed by the concave-convex fit is simple in structure, easy to process and manufacture, and can effectively reduce manufacturing costs. In addition, the concave-convex fit limiting structure is easy to assemble and can effectively improve assembly efficiency.

[0145] The specific structures of the first limiting structure 3124 and the second limiting structure 114 can be such that the first limiting structure 3124 is a convex hull structure and the second limiting structure 114 is a hole structure, or the first limiting structure 3124 is a hole structure and the second limiting structure 114 is a convex hull structure, etc.

[0146] In some embodiments of this application, such as Figure 10 and Figure 11As shown, the retainer 31 also includes a second connecting seat 313. The second connecting seat 313 and the first connecting seat 312 are respectively connected to the outer peripheral surface of the tube body 311. The second connecting seat 313 and the first connecting seat 312 are spaced apart along the axial direction X of the tube body 311.

[0147] The body 10 also includes a limiting member 14 disposed inside the housing 11. The limiting member 14 has a through hole 141 through which the tube 311 of the retaining member 31 passes. The limiting member 14 is fixed inside the housing 11 (for example, it can be connected to the heat exchange assembly 13, or to other structures within the housing 11). When the retaining member 31 is installed, the tube 311 passes through the through hole 141 on the limiting member 14. The first connecting seat 312 abuts against the inner wall of the housing 11, and the second connecting seat 313 abuts against the end face of the limiting member 14 facing the outlet hole 112. The tube 311 and the outlet hole 112 are coaxially arranged. The limiting member 14, through its cooperation with the second connecting seat 313, increases the fixing position of the tube 311, thereby improving the fixing strength of the retaining member 31 and reducing the possibility of inaccurate temperature parameter collection by the temperature sensing element 32 due to tube 311 shaking.

[0148] In addition, a limiting hole 142 is provided on the limiting member 14, and a limiting protrusion 3131 is provided on the second connecting seat 313. The limiting protrusion 3131 is embedded in the limiting hole 142 to limit the second connecting seat 313 in the radial direction Y of the tube body 311, thereby improving the limiting of the retaining member 31 and improving the structural stability of the retaining member 31.

[0149] The second aspect of this application proposes a heating, ventilation, and air conditioning (HVAC) system, which includes a phase change energy storage device 100 as described above.

[0150] In this application, the structure of other parts of the HVAC system described above is based on existing technology and will not be repeated here. The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A phase change energy storage device, characterized by, The phase change energy storage device comprises: a machine body comprising a shell, a heat exchange assembly and a plurality of pipelines, the shell is provided with a plurality of through holes, the pipelines are respectively connected with the heat exchange assembly and are used to form a medium flow channel for a heat exchange medium to flow, and each pipeline extends to the outside of the shell through one through hole; a sealing member sealingly arranged between the pipeline and the through hole, along the axial direction of the pipeline, the sealing member comprises a plurality of sealing bodies arranged outside the shell, and at least part of the body of the sealing body facing the shell is shielded by the sealing body away from the shell, and at least two sealing bodies seal the space between the pipeline and the through hole.

2. The phase change energy storage device of claim 1, wherein, The sealing member further comprises a sealing seat connected with the shell, and along the axial direction of the pipeline, at least the sealing body facing the shell is connected with the sealing seat in the plurality of sealing bodies.

3. The phase change energy storage device of claim 2, wherein, An annular groove is arranged on the outer circumferential surface of the sealing seat, and the body of the shell located on the outer circumferential side of the through hole is embedded in the annular groove.

4. The phase change energy storage device of claim 3, wherein, Along the axial direction of the pipeline, the annular groove comprises two oppositely arranged side walls, and at least one side wall is provided with a protrusion arranged along the axial direction of the through hole and abutting against the shell.

5. The phase change energy storage device of claim 4, wherein, A plurality of protrusions are arranged on the same side wall, and the plurality of protrusions are arranged at intervals along the radial direction of the through hole.

6. The phase change energy storage device of claim 2, wherein, The sealing body is provided with a through hole for the pipeline to pass through, and the hole wall of the through hole abuts against the outer surface of the pipeline.

7. The phase change energy storage device of claim 6, wherein, The number of the sealing bodies is an even number greater than or equal to 4, at least two adjacent sealing bodies form a sealing group, the number of the sealing groups is multiple, the diameters of the through holes of the sealing bodies in each sealing group are equal, and the diameter of the through hole in the sealing group close to the shell is greater than the diameter of the through hole in the sealing group away from the shell.

8. The phase change energy storage device of claim 7, wherein, The sealing body is an arch structure formed in the direction away from the shell.

9. The phase change energy storage device of claim 8, wherein, The two adjacent sealing bodies are connected and surround a cavity, and the side of the cavity away from the shell has an opening.

10. The phase change energy storage device of claim 1, wherein, The sealing member is a flexible member.

11. The phase change energy storage device of any one of claims 1 to 10, wherein, The shell is further provided with a lead-out hole, and the phase change energy storage device further comprises a temperature sensing assembly, the temperature sensing assembly comprises a holding member, a temperature sensing member and a sealing structure, the holding member is arranged at the position of the lead-out hole and is connected with the shell, at least part of the holding member is arranged in the shell, the sealing structure is arranged at the combined position of the holding member and the shell and is arranged around the circumferential direction of the lead-out hole, the temperature sensing member comprises a temperature sensing part and a wire body connected with each other, the temperature sensing part is arranged inside the holding member and obtains the temperature of the heat exchange assembly through the holding member, and the wire body is led out to the outside of the shell at the position of the lead-out hole.

12. A heating and ventilation system, characterized in that The heating and ventilation system comprises the phase change energy storage device according to any one of claims 1 to 11.

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