Heat storage device and heating and ventilation system

Abstract

The utility model discloses a heat storage device and a heating and ventilation system, and relates to the technical field of heat exchange, a phase change material is arranged in a shell, a heat exchange pipeline structure is arranged in the phase change material, and the second ends of two heat storage flow paths are communicated through a first bridging pipe, so that hot fluid can flow in from the first end of one heat storage flow path, and the heat exchange pipeline structure is arranged in the phase change material; the heat flow flows into the second end of the other heat storage flow path from the second end of one heat storage flow path through the first bridging pipe and finally flows out of the first end of the other heat storage flow path, and the second ends of the two heat release flow paths are communicated through the second bridging pipe; the flow path of the cold fluid in the heat release flow path is similar to the flow path of the hot fluid in the heat storage flow path and is not repeated here, so that a connecting pipe extending from the first end to the second end of the heat exchange pipeline structure does not need to be arranged, the length of the connecting pipe can be reduced, and the material cost is saved; and the risk of deformation of the pipeline in the installation process can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange, and particularly relates to a heat storage device and a heating and ventilation system. Background Art

[0002] Currently, a phase change heat storage device generally includes a heat storage flow path and a heat release flow path, and both the heat storage flow path and the heat release flow path are immersed in a phase change material. The heat storage flow path is directly connected to a heat pump system for transferring heat to the phase change material, while the heat release flow path is connected to domestic water for absorbing heat from the phase change material to heat the water for user use.

[0003] In the related art, in order to facilitate filling the phase change material, the heat exchanger is arranged perpendicular to the ground along the fin direction, so that the phase change material can flow downward along the fins by gravity. And the input and output pipes are arranged on the side of the heat exchanger. At the same time, the input and output pipes are aggregated to the top of the heat exchanger and connected to the heat storage / heat release main pipe.

[0004] However, the input and output pipes need to span the entire height of the heat exchanger and extend from the bottom of the heat exchanger to the main pipe at the top of the heat exchanger, resulting in longer input and output pipes. This not only increases the usage amount of pipe materials and raises the material cost, but also makes the pipes prone to deformation during the installation process due to the increase in pipe length, increasing the installation difficulty. Summary of the Utility Model

[0005] The embodiments of the present application provide a heat storage device and a heating and ventilation system, which can solve the technical problem of the long input and output pipes of the heat exchanger.

[0006] In a first aspect, the embodiments of the present application provide a heat storage device, which includes:

[0007] A housing, inside which a phase change material is provided;

[0008] A heat exchange pipeline structure, located inside the housing, having a plurality of heat storage flow paths and a plurality of heat release flow paths. The plurality of heat release flow paths and the plurality of heat storage flow paths are alternately arranged in the phase change material along a first direction. The heat storage flow paths are used for transferring heat to the phase change material for storage, and the heat release flow paths are used for absorbing the heat stored in the phase change material;

[0009] A connection pipeline structure, having a heat storage inlet and a heat storage outlet communicated with the heat storage flow paths, and a heat release inlet and a heat release outlet communicated with the heat release flow paths. The heat storage inlet, the heat storage outlet, the heat release inlet, and the heat release outlet are all located at a first end of the heat exchange pipeline structure;

[0010] The bridging structure is located at the second end of the heat exchange pipeline structure. The bridging structure includes a first bridging pipe and a second bridging pipe. Adjacent two heat storage flow paths are communicated through the first bridging pipe and are respectively communicated with the heat storage inlet and the heat storage outlet. Adjacent two heat release flow paths are communicated through the second bridging pipe and are respectively communicated with the heat release inlet and the heat release outlet.

[0011] In some embodiments, the heat exchange pipeline structure includes heat exchange pipes. A plurality of the heat exchange pipes are arranged along the first direction. One of the adjacent two heat exchange pipes defines the heat storage flow path, and the other of the adjacent two heat exchange pipes defines the heat release flow path.

[0012] In some embodiments, the heat exchange pipe is a finned pipeline, and a plurality of pipe fins are arranged along the extending direction of the heat exchange pipe.

[0013] In some embodiments, the heat exchange pipe that defines the heat storage flow path is an aluminum pipe, and the heat exchange pipe that defines the heat release flow path is a stainless steel pipe.

[0014] In some embodiments, the plurality of heat exchange pipes include a first heat exchange pipe, a second heat exchange pipe, a third heat exchange pipe, and a fourth heat exchange pipe arranged in sequence along the first direction. The first heat exchange pipe and the third heat exchange pipe are communicated through the first bridging pipe, and the second heat exchange pipe and the fourth heat exchange pipe are communicated through the second bridging pipe.

[0015] In some embodiments, the connecting pipeline structure includes:

[0016] Heat storage manifold pipes. Two heat storage manifold pipes are arranged at the first end of the heat exchange pipeline structure. One heat storage manifold pipe has the heat storage inlet and is communicated with a part of the plurality of heat storage flow paths. The other heat storage manifold pipe has the heat storage outlet and is communicated with another part of the plurality of heat storage flow paths;

[0017] Heat release manifold pipes. Two heat release manifold pipes are arranged at the first end of the heat exchange pipeline structure. One heat release manifold pipe has the heat release inlet and is communicated with a part of the plurality of heat release flow paths. The other heat release manifold pipe has the heat release outlet and is communicated with another part of the plurality of heat release flow paths.

[0018] In some embodiments, the connecting pipeline structure further includes a first connecting branch pipe. One end of the first connecting branch pipe is communicated with the heat storage manifold pipe or the heat release manifold pipe, and the other end of the first connecting branch pipe is communicated with the first end of the heat exchange pipeline structure;

[0019] One end of the first connecting branch pipe communicates with the heat storage manifold, and the other end of the first connecting branch pipe communicates with the heat storage flow path; or,

[0020] One end of the first connecting branch pipe communicates with the heat release manifold, and the other end of the first connecting branch pipe communicates with the heat release flow path.

[0021] In some embodiments, the connecting pipeline structure further includes.

[0022] A pipeline support plate is arranged at the first end of the heat exchange pipeline structure;

[0023] A pipeline limiting plate, a plurality of the pipeline limiting plates are arranged on the pipeline support plate along the first direction, and the pipeline limiting plate includes a plurality of limiting parts, the plurality of limiting parts are arranged along the first direction, and the limiting parts are used for limiting the first connecting branch pipe.

[0024] In some embodiments, the heat storage flow path includes a first heat storage branch flow path and a second heat storage branch flow path arranged along a second direction, the second direction intersects with the first direction, and the second ends of two adjacent first heat storage branch flow paths are connected through the first bridging pipe, the first ends of two adjacent first heat storage branch flow paths are respectively connected with the heat storage inlet and the heat storage outlet, and the second ends of two adjacent second heat storage branch flow paths are connected through the first bridging pipe, the first ends of two adjacent second heat storage branch flow paths are respectively connected with the heat storage inlet and the heat storage outlet; the heat release flow path includes a first heat release branch flow path and a second heat release branch flow path arranged along the second direction, and the second ends of two adjacent first heat release branch flow paths are connected through the second bridging pipe, the first ends of two adjacent first heat release branch flow paths are respectively connected with the heat release inlet and the heat release outlet, and the second ends of two adjacent second heat release branch flow paths are connected through the second bridging pipe, the first ends of two adjacent second heat release branch flow paths are respectively connected with the heat release inlet and the heat release outlet.

[0025] In some of these embodiments, the connecting pipeline structure further includes a plurality of three-way connectors, a plurality of second connecting branches, and a plurality of third connecting branches. Among them, the first interface of the three-way connector communicates with the heat storage inlet or the heat storage outlet, and the second interface of the three-way connector communicates with the first heat storage branch path through the second connecting branch, and the third interface of the three-way connector communicates with the second heat storage branch path through the third connecting branch; or, the first interface of the three-way connector communicates with the heat release inlet or the heat release outlet, and the second interface of the three-way connector communicates with the first heat release branch path through the second connecting branch, and the third interface of the three-way connector communicates with the second heat release branch path through the third connecting branch.

[0026] In some of these embodiments, the flow path lengths of the first heat storage branch path and the first heat release branch path are both a, the flow path lengths of the second heat storage branch path and the second heat release branch path are b, the pipeline length of the second connecting branch is L1, and the pipeline length of the third connecting branch is L2. a, b, L1, and L2 satisfy: a + L1 = b + L2.

[0027] In some of these embodiments, the housing includes an outer shell and an inner shell disposed inside the outer shell. The inner shell has the accommodation cavity, the heat exchange pipeline structure is disposed in the accommodation cavity, and the phase change material is provided in the accommodation cavity.

[0028] In some of these embodiments, the housing further includes a heat insulation layer, and the heat insulation layer is disposed between the inner shell and the outer shell.

[0029] In a second aspect, an embodiment of the present application provides a heating and ventilation system, which is characterized in that it includes a heat source module, a water utilization unit, and the heat storage device as described above. The heat source module is communicated with the heat storage flow path to transfer heat to the phase change material through the heat storage flow path, and the water utilization unit is communicated with the heat release flow path to transfer heat to the water utilization unit through the heat release flow path.

[0030] In some of these embodiments, the heat source module includes a main heat source unit and an auxiliary heat source unit. Both the main heat source unit and the auxiliary heat source unit are communicated with the heat storage flow path. The main heat source unit includes one of a solar heat collection module, a water source heat exchange module, and an air source heat exchange module. The auxiliary heat source unit includes an electric heating module.

[0031] In some of these embodiments, the heating and ventilation system further includes a temperature control module, which is arranged in parallel with the heat storage device and shares the heat source module. The temperature control module is used to control the indoor temperature.

[0032] In some of these embodiments, the heating and ventilation system has:

[0033] The first working mode, when the HVAC system is in the first working mode, the heat source module provides heat for the water utilization unit; and

[0034] The second working mode, when the HVAC system is in the second working mode, the heat source module provides heat for the temperature regulation module.

[0035] A heat storage device and an HVAC system according to an embodiment of the present application have at least the following beneficial effects:

[0036] By arranging a phase change material inside the housing and arranging the heat exchange pipeline structure in the phase change material, the heat storage flow path and the heat release flow path of the heat exchange pipeline structure can exchange heat with the phase change material. The connection pipeline structure has a heat storage inlet, a heat storage outlet, a heat release inlet and a heat release outlet, and the heat storage inlet, the heat storage outlet, the heat release inlet and the heat release outlet are all located at the first end of the heat exchange pipeline structure. The bridging structure is arranged at the second end of the heat exchange pipeline structure. The first end and the second end of the heat exchange pipeline structure are arranged opposite to each other. The second ends of two adjacent heat storage flow paths are connected by a first bridging pipe, and the first ends of two adjacent heat storage flow paths are respectively connected to the heat storage inlet and the heat storage outlet. Similarly, the second ends of two adjacent heat release flow paths are connected by a second bridging pipe, and the first ends of two adjacent heat release flow paths are respectively connected to the heat release inlet and the heat release outlet. Thus, when a hot fluid flows into the first end of a heat storage flow path, the hot fluid can flow into the second end of another heat storage flow path from the second end of one heat storage flow path through the first bridging pipe, and then flow out from the first end of another heat storage flow path, forming a heat storage loop. And when a cold fluid flows into the first end of a heat release flow path, the cold fluid can flow into the second end of another heat release flow path from the second end of one heat release flow path through the second bridging pipe, and then flow out from the first end of another heat release flow path, forming a heat release loop. Therefore, there is no need to arrange a connecting pipe extending from the first end to the second end of the self-heat exchange pipeline structure, which can reduce the length of the connecting pipe, save material costs, and also reduce the risk of deformation of the pipeline during installation. Description of the Drawings

[0037] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0038] Figure 1 It is a schematic structural diagram of the first heat storage device provided by the embodiment of the present application;

[0039] Figure 2Schematic three-dimensional structure diagram of the first heat exchange pipeline structure provided by the embodiment of the present application;

[0040] Figure 3 It is Figure 2 The enlarged structure diagram at position A in;

[0041] Figure 4 Side view of the first heat exchange pipeline structure provided by the embodiment of the present application;

[0042] Figure 5 Front view of the first heat exchange pipeline structure provided by the embodiment of the present application;

[0043] Figure 6 It is Figure 2 The enlarged structure diagram at position B in;

[0044] Figure 7 Top view of the first heat exchange pipeline structure provided by the embodiment of the present application;

[0045] Figure 8 Schematic structure diagram of the pipeline support plate and pipeline limit plate provided by the embodiment of the present application;

[0046] Figure 9 Schematic simplified structure diagram of the second heat storage device provided by the embodiment of the present application;

[0047] Figure 10 Schematic three-dimensional structure diagram of the second heat exchange pipeline structure provided by the embodiment of the present application;

[0048] Figure 11 Side view of the second heat exchange pipeline structure provided by the embodiment of the present application;

[0049] Figure 12 It is Figure 10 The enlarged structure diagram at position C in;

[0050] Figure 13 It is Figure 10 The enlarged structure diagram at position D in;

[0051] Figure 14 It is Figure 10 The enlarged structure diagram at position E in;

[0052] Figure 15 Front view of the second heat exchange pipeline structure provided by the embodiment of the present application;

[0053] Figure 16 Top view of the second heat exchange pipeline structure provided by the embodiment of the present application;

[0054] Figure 17 Schematic structure diagram of a heating ventilation and air conditioning (HVAC) system provided by the embodiment of the present application.

[0055] Description of Reference Numerals of the Drawings:

[0056] 100, heat storage device; 10, housing; 20, phase change material; 30, heat exchange pipeline structure; 301, heat storage flow path; 3011, first heat storage branch flow path; 3012, second heat storage branch flow path; 302, heat release flow path; 3021, first heat release branch flow path; 3022, second heat release branch flow path; 303, heat exchange tube; 3031, first heat exchange tube; 3032, second heat exchange tube; 3033, third heat exchange tube; 3034, fourth heat exchange tube; 40, connecting pipeline structure; 401, heat storage manifold; 4011, heat storage inlet; 4012, heat storage outlet; 402, heat release manifold; 4021, heat release inlet; 4022, heat release outlet; 403, first connecting branch pipe; 404, pipeline support plate; 405, pipeline limiting plate; 4051, limiting portion; 406, tee joint; 407, second connecting branch pipe; 408, third connecting branch pipe; 50, bridging structure; 501, first bridging pipe; 502, second bridging pipe; 200, HVAC system; 201, heat source module; 202, water utilization unit; 203, temperature regulation module. Detailed Embodiment

[0057] In order to make the objectives, technical solutions, and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0058] Please refer to Figure 1 , a heat storage device 100 provided by an embodiment of the present application. The heat storage device 100 can include a housing 10, a heat exchange pipeline structure 30, a connecting pipeline structure 40, and a bridging structure 50.

[0059] Optionally, the housing 10 is a cube structure, and an accommodation cavity is formed inside the housing 10. A phase change material 20 can be provided in the accommodation cavity, and the phase change material 20 can store heat.

[0060] The heat exchange pipeline structure 30 can also be arranged inside the housing 10, and the heat exchange pipeline structure 30 is immersed in the phase change material 20. The heat exchange pipeline structure 30 can have a plurality of heat storage flow paths 301 and a plurality of heat release flow paths 302. The plurality of heat storage flow paths 301 and the plurality of heat release flow paths 302 can be arranged alternately along a first direction. Figure 1The X-axis direction in it is the first direction. It can also be said that there is a heat release flow path 302 between two adjacent heat storage flow paths 301, and there is a heat storage flow path 301 between two adjacent heat release flow paths 302. Moreover, multiple heat storage flow paths 301 and multiple heat release flow paths 302 are all immersed in the phase change material 20. Among them, the heat storage flow path 301 can transfer heat to the phase change material 20, the phase change material 20 can store heat, and the heat release flow path 302 can absorb the heat stored by the phase change material 20. When cold water flows into the heat release flow path 302, the cold water can absorb the heat of the phase change material 20. After the cold water is heated into hot water, it can be used by users, so that hot water can be supplied to users in real time.

[0061] Combined with Figure 2 As shown, the connecting pipeline structure 40 can have a heat storage inlet 4011, a heat storage outlet 4012, a heat release inlet 4021, and a heat release outlet 4022. Among them, the heat storage inlet 4011, the heat storage outlet 4012, the heat release inlet 4021, and the heat release outlet 4022 are all located at the first end of the heat exchange pipeline structure 30. It can also be said that the heat storage inlet 4011, the heat storage outlet 4012, the heat release inlet 4021, and the heat release outlet 4022 are all located at the first ends of the heat storage flow path 301 and the heat release flow path 302. And the first end of each heat storage flow path 301 can communicate with one of the heat storage inlet 4011 and the heat storage outlet 4012, and the first end of each heat release flow path 302 can communicate with one of the heat release inlet 4021 and the heat release outlet 4022.

[0062] The bridging structure 50 can be located at the second end of the heat exchange pipeline structure 30. It should be noted that the first end and the second end of the heat exchange pipeline structure 30 are opposite ends. If the first end of the heat exchange pipeline structure 30 is the top end of the heat exchange pipeline structure 30, then the second end of the heat exchange pipeline structure 30 is the bottom end of the heat exchange pipeline structure 30. As Figure 2 shown, the positive direction of the Z-axis points to the first end of the heat exchange pipeline structure 30, and the negative direction of the Z-axis points to the second end of the heat exchange pipeline structure 30.

[0063] Combined with Figure 2 and Figure 3 shown, the bridging structure 50 can include a first bridging pipe 501 and a second bridging pipe 502. The second ends of two adjacent heat storage flow paths 301 are connected through the first bridging pipe 501, and the first ends of two adjacent heat storage flow paths 301 are respectively connected to the heat storage inlet 4011 and the heat storage outlet 4012. The second ends of two adjacent heat release flow paths 302 can be connected through the second bridging pipe 502, and the first ends of two adjacent heat release flow paths 302 are respectively connected to the heat release inlet 4021 and the heat release outlet 4022.

[0064] Combined with Figure 1As shown, when the hot fluid flows into the first end of a heat storage flow path 301 from the heat storage inlet 4011, the hot fluid can flow to the second end of a heat storage flow path 301, and through the first bridge pipe 501, it flows into the second end of another heat storage flow path 301 from the second end of a heat storage flow path 301, then flows to the first end of another heat storage flow path 301, and finally flows out from the heat storage outlet 4012, forming a heat storage loop; and when the cold fluid flows into the first end of a heat release flow path 302 from the heat release inlet 4021, the cold fluid can flow to the second end of a heat release flow path 302, and through the second bridge pipe 502, it flows into the second end of another heat release flow path 302 from the second end of a heat release flow path 302, then flows to the first end of another heat release flow path 302, and finally flows out from the heat release outlet 4022, forming a heat release loop.

[0065] Therefore, in this application, the second ends of two heat storage flow paths 301 are connected through the first bridge pipe 501, so that the hot fluid can flow into from the first end of a heat storage flow path 301, and from the second end of a heat storage flow path 301, it flows into the second end of another heat storage flow path 301 through the first bridge pipe 501, and finally flows out from the first end of another heat storage flow path 301. And the second ends of two heat release flow paths 302 are connected through the second bridge pipe 502. The flow path of the cold fluid in the heat release flow path 302 is similar to the flow path of the hot fluid in the heat storage flow path 301, which will not be elaborated here. Thus, there is no need to set a connecting pipe extending from the first end to the second end of the self-heat exchange pipeline structure 30, which can reduce the length of the connecting pipe, save material costs, and also reduce the risk of deformation of the pipeline during installation.

[0066] Please refer to Figures 2 to 4 , in some embodiments, the heat exchange pipeline structure 30 can include heat exchange tubes 303. A plurality of heat exchange tubes 303 can be arranged along the first direction, and one of the adjacent two heat exchange tubes 303 can define a heat storage flow path 301, and the other of the adjacent two heat exchange tubes 303 can define a heat release flow path 302.

[0067] Optionally, among the plurality of heat exchange tubes 303 arranged along the first direction, a part of the heat exchange tubes 303 can define heat storage flow paths 301, and another part of the heat exchange tubes 303 can define heat release flow paths 302. And there is a heat release flow path 302 between two adjacent heat storage flow paths 301, and there is a heat storage flow path 301 between two adjacent heat release flow paths 302. This alternating arrangement layout helps to reduce direct heat loss. The heat in the heat storage flow path 301 can be effectively stored and released through the heat release flow path 302 when needed. At the same time, since the heat release flow path 302 is located between the heat storage flow paths 301, it can absorb and release heat more effectively, thereby improving the overall thermal efficiency of the system.

[0068] Optionally, each heat exchange tube 303 can be meanderingly extended along the second direction to form a plurality of bending circuits, and the plurality of bending circuits can be reciprocally bent along the third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0069] Combined Figure 1 As shown, the direction where the X-axis is located is the first direction, the direction where the Z-axis is located is the second direction, and the direction where the Y-axis is located is the third direction.

[0070] Taking the example that both the first direction and the third direction are horizontal directions, and the first direction is perpendicular to the third direction, the second direction is the vertical direction, and the second direction is perpendicular to the horizontal plane where the first direction and the third direction are located.

[0071] Specifically, each heat exchange tube 303 can include a plurality of straight tubes and a plurality of U-shaped tubes. The straight tubes are arranged to extend along the third direction, and the plurality of straight tubes are arranged in parallel at intervals along the second direction. One end of two adjacent straight tubes on the same side can be connected through a U-shaped tube. Thus, after two adjacent straight tubes and a U-shaped tube are connected, a bending circuit tube can be formed. The plurality of bending circuit tubes can be sequentially connected through a plurality of U-shaped tubes, thereby forming a flow path that reciprocally bends along the third direction. Heat exchange through the heat storage flow path 301 and the heat release flow path 302 defined by the heat exchange tube 303 not only improves the heat exchange efficiency but also optimizes the space utilization rate.

[0072] Optionally, the heat exchange tube 303 is a finned pipeline. A plurality of tube fins are provided on the outer wall surface of the heat exchange tube 303, and the plurality of tube fins can be sequentially arranged at intervals along the extension direction of the heat exchange tube 303, so that the flow path defined by the heat exchange tube 303 can pass through the tube fins, and the originally smooth outer wall surface of the heat exchange tube 303 becomes uneven, thereby greatly increasing the surface area in contact with the phase change material 20. Due to the increase in the heat exchange area, the phase change material 20 can more fully exchange heat with the heat exchange tube 303 through the fins. Whether it is the heat storage or the heat release process, it can be carried out more efficiently, reducing heat loss and waste.

[0073] In some embodiments, the heat exchange tube 303 defining the heat storage flow path 301 is an aluminum tube. Aluminum is an excellent heat conducting material, and its thermal conductivity is higher than that of many other metals. Therefore, as the heat exchange tube 303 of the heat storage flow path 301, the aluminum tube can quickly transfer heat from the hot fluid to the tube wall and effectively transfer the heat to the phase change material 20. This high-efficiency heat conduction ability is crucial for the heat storage process and can ensure that the heat is transferred to the phase change material 20 quickly and evenly. The heat exchange tube 303 defining the heat release flow path 302 is a stainless steel tube. The heat release flow path 302 is connected to the municipal water supply. Generally, the municipal water contains aluminum ions, which may cause corrosion to metals. Due to its special alloy composition and the formation of a surface passivation film, the stainless steel tube can effectively resist the erosion of these corrosion factors, thus ensuring the long-term stable operation of the heat exchange tube 303.

[0074] Please refer to Figure 3 and Figure 4 In some embodiments, multiple heat exchange tubes 303 can include a first heat exchange tube 3031, a second heat exchange tube 3032, a third heat exchange tube 3033, and a fourth heat exchange tube 3034 arranged in sequence along the first direction. The first heat exchange tube 3031 and the second heat exchange tube 3032 can be connected through a first bridging tube 501, and the second heat exchange tube 3032 and the fourth heat exchange tube 3034 can be connected through a second bridging tube 502.

[0075] Optionally, the first heat exchange tube 3031 and the third heat exchange tube 3033 can define the heat storage flow path 301, and the second heat exchange tube 3032 and the fourth heat exchange tube 3034 can define the heat release flow path 302, such that adjacent two heat storage flow paths 301 can be connected through the first bridging tube 501, and adjacent two heat release flow paths 302 can be connected through the second bridging tube 502. As a result, the first bridging tube 501 can connect two heat storage flow paths 301 along the shortest path, and the second bridging tube 502 can also connect two heat release flow paths 302 along the shortest path. The above connection method can reduce the lengths of the first bridging tube 501 and the second bridging tube 502.

[0076] Please refer to Figure 2 and Figure 5 In some embodiments, the connecting pipeline structure 40 can include a heat storage header 401 and a heat release header 402.

[0077] Optionally, two heat storage manifolds 401 are arranged at the first end of the heat exchange pipeline structure 30. One of the heat storage manifolds 401 has a heat storage inlet 4011 for the inflow of the heat fluid, and the other heat storage manifold 401 has a heat storage outlet 4012 for the outflow of the heat fluid. The heat storage manifold 401 with the heat storage inlet 4011 can communicate with the first ends of a part of the plurality of heat storage flow paths 301, and the heat storage manifold 401 with the heat storage outlet 4012 can communicate with the first ends of another part of the plurality of heat storage flow paths 301. After the heat fluid flows into the heat storage manifold 401 from the heat storage inlet 4011, it can be split into a plurality of heat storage circuits, and each heat storage circuit flows from the first end of one heat storage flow path 301 to the second end of one heat storage flow path 301, then flows into the second end of another heat storage flow path 301 through the first bridging pipe 501, and finally converges from the first end of another heat storage flow path 301 to the manifold with the heat storage outlet 4012.

[0078] Similarly, two heat release manifolds 402 are arranged at the first end of the heat exchange pipeline structure 30. One of the heat release manifolds 402 has a heat release inlet 4021, and the other heat release manifold 402 has a heat release outlet 4022. The heat release manifold 402 with the heat release inlet 4021 can communicate with the first ends of a part of the plurality of heat release flow paths 302, and the heat release manifold 402 with the heat release outlet 4022 can communicate with the first ends of another part of the plurality of heat release flow paths 302. After the cold fluid flows into the heat release manifold 402 from the heat release inlet 4021, it can be split into a plurality of heat release circuits, and each heat release circuit flows from the first end of one heat release flow path 302 to the second end of one heat release flow path 302, then flows into the second end of another heat release flow path 302 through the second bridging pipe 502, and finally converges from the first end of another heat release flow path 302 to the manifold with the heat release outlet 4022.

[0079] Therefore, by arranging the heat storage manifold 401 and the heat release manifold 402, a plurality of heat storage circuits and a plurality of heat release circuits can be formed, thereby improving the heat exchange efficiency.

[0080] Please refer to Figures 5 to 7 , in some embodiments, the connection pipeline structure 40 can further include a first connection branch pipe 403. One end of the first connection branch pipe 403 can communicate with the heat storage manifold 401 or the heat release manifold 402, and the other end of the first connection branch pipe 403 can communicate with the first end of the heat exchange pipeline structure 30.

[0081] Optionally, the connecting pipeline structure 40 can include a plurality of first connecting branch pipes 403. A part of the first connecting branch pipes 403 is used to connect the heat storage manifold 401 and the heat storage flow path 301, and another part of the first connecting branch pipes 403 is used to connect the heat release manifold 402 and the heat release flow path 302.

[0082] Specifically, when one end of the first connecting branch pipe 403 is connected to the heat storage manifold 401, the other end of the first connecting branch pipe 403 is connected to the heat storage flow path 301, and when one end of the first connecting branch pipe 403 is connected to the heat release manifold 402, the other end of the first connecting branch pipe 403 is connected to the heat release flow path 302. Therefore, by setting the first connecting branch pipe 403, the heat storage manifold 401 can be connected to the heat storage flow path 301, and the heat release manifold 402 can be connected to the heat release flow path 302.

[0083] Please refer to Figure 7 and Figure 8 In some embodiments, the connecting pipeline structure 40 can further include a pipeline support plate 404 and a pipeline limiting plate 405.

[0084] Optionally, the pipeline support plate 404 can be fixed to the first end of the heat exchange pipeline structure 30, and a plurality of first connecting branch pipes 403 can be arranged on the pipeline support plate 404. The pipeline support plate 404 can play a role in supporting the first connecting branch pipes 403.

[0085] A plurality of pipeline limiting plates 405 can be installed on the pipeline support plate 404, and the plurality of pipeline limiting plates 405 are arranged along the first direction. The pipeline limiting plates 405 and the pipeline support plate 404 can clamp the first connecting branch pipes 403, so as to play a role in limiting the first connecting branch pipes 403, prevent the first connecting branch pipes 403 from shaking, and make the pipeline connection of the heat storage device 100 more firm.

[0086] The pipeline limiting plate 405 can include a plurality of limiting parts 4051. The plurality of limiting parts 4051 can be arranged along the first direction, and each limiting part 4051 and the pipeline support plate 404 can clamp a first connecting branch pipe 403, so that the first connecting branch pipe 403 is firmly fixed between the limiting part 4051 and the pipeline support plate 404.

[0087] Please refer to Figure 9 and Figure 10, in some embodiments, the heat storage flow path 301 can include a first heat storage branch flow path 3011 and a second heat storage branch flow path 3012, and the first heat storage branch flow path 3011 and the second heat storage branch flow path 3012 are arranged along the second direction. It can also be said that the first heat storage branch flow path 3011 is located on the side of the second heat storage branch flow path 3012 facing the heat storage manifold 401. A plurality of first heat storage branch flow paths 3011 can be arranged at intervals along the first direction, and a plurality of second heat storage branch flow paths 3012 can also be arranged at intervals along the first direction.

[0088] Combined Figures 11 to 13 As shown, optionally, the first ends of two adjacent first heat storage branch flow paths 3011 can be respectively communicated with the heat storage inlet 4011 and the heat storage outlet 4012, and the second ends of two adjacent first heat storage branch flow paths 3011 are communicated through a first bridging pipe 501, so that the heat storage inlet 4011, a first heat storage branch flow path 3011, a first bridging pipe 501, another first heat storage branch flow path 3011, and the heat storage outlet 4012 can be sequentially communicated to form a first heat storage branch loop. And the first ends of two adjacent second heat storage branch flow paths 3012 can be respectively communicated with the heat storage inlet 4011 and the heat storage outlet 4012, and the second ends of two adjacent second heat storage branch flow paths 3012 can be communicated through a first bridging pipe 501, so that the heat storage inlet 4011, a second heat storage branch flow path 3012, a first bridging pipe 501, another second heat storage branch flow path 3012, and the heat storage outlet 4012 can be sequentially communicated to form a second heat storage branch loop.

[0089] Thus, multiple first heat storage branch loops and multiple second heat storage branch loops can be formed inside the heat storage device 100, which can further improve the heat storage efficiency during the heat storage process. And the first heat storage branch loop also does not need to be provided with a connecting pipe extending from the first end to the second end of the first heat storage branch flow path 3011, which can reduce the length of the connecting pipe and save the material cost. And the second heat storage branch loop only needs to be provided with a connecting pipe extending from the first end of the first heat storage branch flow path 3011 to the first end of the second heat storage branch flow path 3012. Compared with setting a connecting pipe extending from the first end of the first heat storage branch flow path 3011 to the second end of the second heat storage branch flow path 3012, it can save half of the pipeline length.

[0090] Optionally, the heat release flow path 302 can include a first heat release branch flow path 3021 and a second heat release branch flow path 3022, and the first heat release branch flow path 3021 and the second heat release branch flow path 3022 are also arranged along the second direction. It can also be said that the first heat release branch flow path 3021 is located on the side of the second heat release branch flow path 3022 facing the heat release manifold 402. A plurality of first heat release branch flow paths 3021 and a plurality of first heat storage branch flow paths 3011 are arranged alternately in sequence along the first direction, and a plurality of second heat release branch flow paths 3022 and a plurality of second heat storage branch flow paths 3012 are also arranged alternately in sequence along the first direction.

[0091] Similarly, the first ends of two adjacent first heat release branch flow paths 3021 can be respectively communicated with the heat release inlet 4021 and the heat release outlet 4022, and the second ends of two adjacent first heat release branch flow paths 3021 are communicated through a second bridging pipe 502, so that the heat release inlet 4021, a first heat release branch flow path 3021, a second bridging pipe 502, another first heat release branch flow path 3021, and the heat release outlet 4022 can be sequentially communicated to form a first heat release branch loop. And the first ends of two adjacent second heat release branch flow paths 3022 can be respectively communicated with the heat release inlet 4021 and the heat release outlet 4022, and the second ends of two adjacent second heat release branch flow paths 3022 can be communicated through a second bridging pipe 502, so that the heat release inlet 4021, a second heat release branch flow path 3022, a second bridging pipe 502, another second heat release branch flow path 3022, and the heat release outlet 4022 can be sequentially communicated to form a second heat release branch loop.

[0092] Thus, multiple first heat release branch loops and multiple second heat release branch loops can be formed inside the heat storage device 100, which can further improve the heat absorption efficiency during the heat release process, can provide hot water for users more efficiently, and the first heat release branch loop and the second heat release branch loop can also reduce the length of the connecting pipes and save material costs. The principle is the same as that of the first heat storage branch loop and the second heat storage branch loop, so it will not be elaborated here.

[0093] Please refer to Figures 14 to 16 , in some embodiments, the connecting pipe structure 40 can further include a plurality of three-way connectors 406, a plurality of second connecting branches 407, and a plurality of third connecting branches 408.

[0094] Optionally, the three-way connector 406 has a first interface, a second interface, and a third interface. The first interface of the three-way connector 406 can be communicated with the heat storage manifold 401 or the heat release manifold 402 through a first connecting branch 403, the second interface of the three-way connector 406 can be communicated with the heat exchange pipe 303 through a second connecting branch 407, and the third interface of the three-way connector 406 can be communicated with the heat exchange pipe 303 through a third connecting branch 408.

[0095] Specifically, when the first interface of the three-way pipe 406 is connected to the heat storage header 401, the second interface of the three-way pipe 406 can be connected to the first end of the first heat storage branch path 3011 through the second connecting branch pipe 407, and the third interface of the three-way pipe 406 can be connected to the first end of the second heat storage branch path 3012 through the third connecting branch pipe 408; when the first interface of the three-way pipe 406 is connected to the heat release header 402, the second interface of the three-way pipe 406 can be connected to the first end of the first heat release branch path 3021 through the second connecting branch pipe 407, and the third interface of the three-way pipe 406 can be connected to the first end of the second heat release branch path 3022 through the third connecting branch pipe 408.

[0096] Thus, through the three-way pipe 406, the second connecting branch pipe 407, and the third connecting branch pipe 408, the heat storage header 401 can be respectively connected to the first heat storage branch path 3011 and the second heat storage branch path 3012, which can reduce the pipelines connected to the heat storage header 401 and further reduce the length of the connecting pipes. Similarly, the three-way pipe 406, the second connecting branch pipe 407, and the third connecting branch pipe 408 can respectively connect the heat release header 402 to the first heat release branch path 3021 and the second heat release branch path 3022, and can also reduce the pipeline length connected to the heat release header 402.

[0097] In some embodiments, the flow path lengths of the first heat storage branch path 3011 and the first heat release branch path 3021 are both equal to a, the flow path lengths of the second heat storage branch path 3012 and the second heat release branch path 3022 are also both equal to b, the pipeline length of the second connecting branch pipe 407 is L1, and the pipeline length of the third connecting branch pipe 408 is L2. a, b, L1, and L2 satisfy: a + L1 = b + L2.

[0098] Optionally, when a, b, L1, and L2 satisfy: a + L1 = b + L2, the flow path lengths of the first heat storage branch circuit and the second heat storage branch circuit can be approximately equal, so that the hot fluid can be evenly divided into the first heat storage branch path 3011 and the second heat storage branch path 3012 in the heat storage header 401, which can prevent the problem of uneven flow division of the hot fluid in the heat exchange pipeline structure 30, make the temperature of the heat exchange pipeline structure 30 more evenly distributed, and improve the heat exchange efficiency.

[0099] Similarly, when a, b, L1, and L2 satisfy: a + L1 = b + L2, the flow path lengths of the first heat release branch circuit and the second heat release branch circuit can be approximately equal, so that the cold fluid can be evenly divided into the first heat release branch path 3021 and the second heat release branch path 3022 in the heat release header 402, which can prevent the problem of uneven flow division of the cold fluid in the heat exchange pipeline structure 30.

[0100] In some embodiments, the housing 10 can include an outer shell and an inner shell disposed inside the outer shell. The inner shell can have a receiving cavity, and the heat exchange pipeline structure 30 can be disposed in the receiving cavity. The phase change material 20 can be provided in the receiving cavity.

[0101] Optionally, the inner shell can be a stainless steel inner liner, so that the inner shell can form a receiving cavity for accommodating the phase change material 20, and can prevent the phase change material 20 from leaking.

[0102] In some embodiments, the housing 10 can further include a heat insulation layer. The heat insulation layer can be disposed between the inner shell and the outer shell. The heat insulation layer can play a heat insulation role, can reduce the heat transfer from the inside of the inner shell to the outside, and thus can prevent the heat stored in the phase change material 20 from being dissipated, and further improve the heat exchange efficiency between the heat exchange tube 303 structure and the phase change material 20.

[0103] Optionally, the heat insulation layer can cover the outer wall surface of the inner shell, and the heat insulation layer can cover the top, bottom and the circumferential side of the inner shell. It can also be said that the heat insulation layer wraps the inner shell, and the heat insulation layer plays a comprehensive heat insulation role.

[0104] Please refer to Figure 17 , in some embodiments, a heating, ventilation and air conditioning (HVAC) system 200 provided by the embodiments of the present application is provided. The HVAC system 200 can provide hot water to users in real time. The HVAC system 200 includes a heat source module 201, a water utilization unit 202 and a heat storage device 100.

[0105] Specifically, the heat source module 201 can be communicated with the heat storage flow path 301. The hot fluid in the heat source module 201 can flow into the heat storage flow path 301. The heat storage flow path 301 can transfer heat to the phase change material 20. The water utilization unit 202 can be communicated with the heat release flow path 302. After the cold water flows into the heat release flow path 302, it can absorb the heat of the phase change material 20. After the cold water is heated into hot water, it can be used by users, so that clean hot water can be provided to users in real time, and there is no need to set up a water tank to store hot water.

[0106] Optionally, the heat source module 201 can include a main heat source unit and an auxiliary heat source unit. Both the main heat source unit and the auxiliary heat source unit can be communicated with the heat storage flow path 301, and can transfer heat to the phase change material 20 through the heat storage flow path 301.

[0107] The main heat source unit can include one of a solar heat collection module, a water source heat exchange module and an air source heat exchange module. Under the condition that conditions permit, it is preferred to use more environmentally friendly natural energy sources such as solar heat collection modules, water source heat exchange modules and air source heat exchange modules to perform heat exchange with the phase change material 20, so as to save energy.

[0108] The auxiliary heat source unit includes an electric heating module. When the main heat source unit has insufficient energy supply, the auxiliary heat source unit can be used to provide energy to ensure the stability and continuity of heat energy supply.

[0109] Please refer to Figure 17 , in some embodiments, the HVAC system 200 can further include a temperature adjustment module 203. The temperature adjustment module 203 can be arranged in parallel with the heat storage device 100 and share the heat source module 201, and the HVAC system 200 also has a first working mode and a second working mode.

[0110] When the HVAC system 200 is in the first working mode, the heat source module 201 can provide heat to the phase change material 20, so that the water utilization unit 202 can absorb the heat stored in the phase change material 20 to heat cold water, thereby providing hot water for users; when the HVAC system 200 is in the second working mode, the heat source module 201 can provide heat to the temperature adjustment module 203, so that the temperature adjustment module 203 can be used to adjust the indoor temperature.

[0111] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components; in the description of the present application, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0112] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat storage device, characterized in that, Comprising: A housing, inside which a phase change material is provided; A heat exchange pipeline structure, located inside the housing, having a plurality of heat storage flow paths and a plurality of heat release flow paths. The plurality of heat release flow paths and the plurality of heat storage flow paths are arranged alternately in a first direction within the phase change material. The heat storage flow paths are used to transfer heat to the phase change material for storage, and the heat release flow paths are used to absorb the heat stored in the phase change material; A connecting pipeline structure, having a heat storage inlet and a heat storage outlet communicating with the heat storage flow paths, and a heat release inlet and a heat release outlet communicating with the heat release flow paths. The heat storage inlet, the heat storage outlet, the heat release inlet, and the heat release outlet are all located at the first end of the heat exchange pipeline structure; A bridging structure, located at the second end of the heat exchange pipeline structure. The bridging structure includes a first bridging pipe and a second bridging pipe. Adjacent two heat storage flow paths are connected through the first bridging pipe and are respectively connected to the heat storage inlet and the heat storage outlet. Adjacent two heat release flow paths are connected through the second bridging pipe and are respectively connected to the heat release inlet and the heat release outlet.

2. The heat storage device according to claim 1, characterized in that, The heat exchange pipeline structure includes: Heat exchange pipes, a plurality of the heat exchange pipes are arranged in the first direction. One of the adjacent two heat exchange pipes defines the heat storage flow path, and the other of the adjacent two heat exchange pipes defines the heat release flow path.

3. The heat storage device according to claim 2, characterized in that, The heat exchange pipes are finned pipelines, and a plurality of pipe fins are arranged along the extending direction of the heat exchange pipes.

4. The heat storage device according to claim 2, characterized in that The heat exchange pipe defining the heat storage flow path is an aluminum pipe, and the heat exchange pipe defining the heat release flow path is a stainless steel pipe.

5. The heat storage device according to claim 2, wherein: The plurality of heat exchange pipes include a first heat exchange pipe, a second heat exchange pipe, a third heat exchange pipe, and a fourth heat exchange pipe arranged in sequence in the first direction. The first heat exchange pipe and the third heat exchange pipe are connected through the first bridging pipe and are respectively connected to the heat storage inlet and the heat storage outlet. The second heat exchange pipe and the fourth heat exchange pipe are connected through the second bridging pipe and are respectively connected to the heat release inlet and the heat release outlet.

6. The heat storage device according to claim 1, characterized in that, The connecting pipeline structure includes: A heat storage manifold, two heat storage manifolds are provided at the first end of the heat exchange pipeline structure. One heat storage manifold has the heat storage inlet and is connected to a part of the plurality of heat storage flow paths. The other heat storage manifold has the heat storage outlet and is connected to another part of the plurality of heat storage flow paths; A heat release manifold, two heat release manifolds are provided at the first end of the heat exchange pipeline structure. One heat release manifold has the heat release inlet and is connected to a part of the plurality of heat release flow paths. The other heat release manifold has the heat release outlet and is connected to another part of the plurality of heat release flow paths.

7. The heat storage device according to claim 6, characterized in that, The connecting pipeline structure further includes a first connecting branch pipe. One end of the first connecting branch pipe is connected to the heat storage manifold or the heat release manifold, and the other end of the first connecting branch pipe is connected to the first end of the heat exchange pipeline structure; One end of the first connecting branch pipe communicates with the heat storage header pipe, and the other end of the first connecting branch pipe communicates with the heat storage flow path; or, One end of the first connecting branch pipe communicates with the heat release header pipe, and the other end of the first connecting branch pipe communicates with the heat release flow path.

8. The heat storage device according to claim 7, characterized in that The connecting pipeline structure further includes: A pipeline support plate disposed at the first end of the heat exchange pipeline structure; Pipeline limiting plates, a plurality of the pipeline limiting plates are arranged along the first direction on the pipeline support plate, and the pipeline limiting plates include a plurality of limiting portions, the plurality of limiting portions are arranged along the first direction, and the limiting portions are used for limiting the first connecting branch pipe.

9. The heat storage device according to claim 1, wherein: The heat storage flow path includes a first heat storage branch flow path and a second heat storage branch flow path distributed along a second direction, the second direction intersects with the first direction, and the second ends of two adjacent first heat storage branch flow paths are connected through the first bridging pipe, the first ends of two adjacent first heat storage branch flow paths are respectively connected to the heat storage inlet and the heat storage outlet, and the second ends of two adjacent second heat storage branch flow paths are connected through the first bridging pipe, the first ends of two adjacent second heat storage branch flow paths are respectively connected to the heat storage inlet and the heat storage outlet; The heat release flow path includes a first heat release branch flow path and a second heat release branch flow path distributed along the second direction, and the second ends of two adjacent first heat release branch flow paths are connected through the second bridging pipe, the first ends of two adjacent first heat release branch flow paths are respectively connected to the heat release inlet and the heat release outlet, and the second ends of two adjacent second heat release branch flow paths are connected through the second bridging pipe, the first ends of two adjacent second heat release branch flow paths are respectively connected to the heat release inlet and the heat release outlet.

10. The heat storage device according to claim 9, characterized in that, The connecting pipeline structure further includes a plurality of three-way connecting pipes, a plurality of second connecting branch pipes and a plurality of third connecting branch pipes; Wherein, the first interface of the three-way connecting pipe communicates with the heat storage inlet or the heat storage outlet, the second interface of the three-way connecting pipe communicates with the first heat storage branch flow path through the second connecting branch pipe, and the third interface of the three-way connecting pipe communicates with the second heat storage branch flow path through the third connecting branch pipe; Or, the first interface of the three-way connecting pipe communicates with the heat release inlet or the heat release outlet, the second interface of the three-way connecting pipe communicates with the first heat release branch flow path through the second connecting branch pipe, and the third interface of the three-way connecting pipe communicates with the second heat release branch flow path through the third connecting branch pipe.

11. The heat storage device according to claim 10, characterized in that, The flow path lengths of the first heat storage branch flow path and the first heat release branch flow path are both a, the flow path lengths of the second heat storage branch flow path and the second heat release branch flow path are b, the pipeline length of the second connecting branch pipe is L1, and the pipeline length of the third connecting branch pipe is L2, and a, b, L1 and L2 satisfy: a + L1 = b + L2.

12. The regenerative heat storage device according to claim 1, characterized in that, The housing includes an outer shell and an inner shell disposed inside the outer shell. The inner shell has a receiving cavity, and the heat exchange pipeline structure is disposed in the receiving cavity. The receiving cavity is provided with the phase change material.

13. The heat storage device according to claim 12, wherein The housing further includes a thermal insulation layer, and the thermal insulation layer is disposed between the inner shell and the outer shell.

14. A heating, ventilation and air conditioning system, characterized in that, It includes a heat source module, a water utilization unit, and a heat storage device according to any one of claims 1-13. The heat source module is communicated with the heat storage flow path to transfer heat to the phase change material through the heat storage flow path. The water utilization unit is communicated with the heat release flow path to transfer heat to the water utilization unit through the heat release flow path.

15. The HVAC system according to claim 14, characterized in that, The heat source module includes a main heat source unit and an auxiliary heat source unit. Both the main heat source unit and the auxiliary heat source unit are communicated with the heat storage flow path. The main heat source unit includes one of a solar heat collection module, a water source heat exchange module, and an air source heat exchange module. The auxiliary heat source unit includes an electric heating module.

16. The HVAC system according to claim 14, characterized in that, The HVAC system further includes a temperature control module. The temperature control module is arranged in parallel with the heat storage device and shares the heat source module. The temperature control module is used to control the indoor temperature.

17. The HVAC system according to claim 16, characterized in that, The HVAC system has: A first working mode. When the HVAC system is in the first working mode, the heat source module provides heat for the water utilization unit; and A second working mode. When the HVAC system is in the second working mode, the heat source module provides heat for the temperature control module.

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