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 equipment, a phase change material is arranged in a containing cavity of a shell, a pipeline structure is embedded in the phase change material, and the pipeline structure is provided with a plurality of heat storage flow paths and a plurality of heat release flow paths; the heat storage inlet and the heat storage outlet are communicated with the heat storage flow path, the heat release inlet and the heat release outlet are communicated with the heat release flow path, the heat storage inlet and the heat storage outlet are located at the two opposite ends of the pipeline structure respectively, and similarly, the heat release inlet and the heat release outlet are also located at the two opposite ends of the pipeline structure respectively. Compared with the mode that the heat storage inlet, the heat storage outlet, the heat release inlet and the heat release outlet are arranged at the same end of the pipeline structure, no additional pipeline needs to be arranged to gather the heat storage inlet and the heat storage outlet to the same end, no additional pipeline needs to be arranged to gather the heat release inlet and the heat release outlet to the same end, the length of the pipeline can be reduced, and the cost is reduced. And the material cost and the manufacturing cost can be reduced.

Description

Technical Field

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

[0002] In the related art, most of the phase change heat storage devices adopt a finned tube metal heat exchanger structure. And due to the relatively high viscosity of the phase change material, in order to facilitate the filling of the phase change material, the heat exchanger is usually arranged perpendicular to the ground along the fin direction, so that the phase change material can flow downward along the fins by gravity during filling, which can improve the filling efficiency.

[0003] However, arranging the heat exchanger in the vertical direction will cause the input and output pipes connected to the heat exchanger to be located on the side of the heat exchanger. At the same time, in order to improve the heat storage utilization rate of the phase change material, the input and output pipes will be aggregated to the top of the phase change heat storage device and connected to the heat storage / discharge main pipe, which will result in longer input and output pipes, thereby increasing the material cost and manufacturing cost. Summary of the Utility Model

[0004] The embodiments of the present application provide a heat storage device and a heating and ventilation system, which can solve the technical problem that the input and output pipes of the phase change heat storage device are relatively long, resulting in an increase in material cost and manufacturing cost.

[0005] In a first aspect, the embodiments of the present application provide a heat storage device, which includes:

[0006] A housing having an accommodation cavity, and a phase change material is arranged in the accommodation cavity;

[0007] A pipeline structure is arranged in the accommodation cavity, and at least part of the pipeline structure is located in the phase change material. The pipeline structure has a heat storage inlet, a heat storage flow path and a heat storage outlet that are sequentially connected, and the pipeline structure also has a heat release inlet, a heat release flow path and a heat release outlet that are sequentially connected;

[0008] Wherein, the heat storage inlet is located at the upstream end of the heat storage flow path, the heat storage outlet is located at the downstream end of the heat storage flow path, the upstream end and the downstream end of the heat storage flow path are respectively located at opposite ends of the pipeline structure, the heat release inlet is located at the upstream end of the heat release flow path, the heat release outlet is located at the downstream end of the heat release flow path, and the upstream end and the downstream end of the heat release flow path are respectively located at opposite ends of the pipeline structure.

[0009] In some embodiments, the upstream end of the heat storage flow path and the downstream end of the heat release flow path are located at the same end of the pipeline structure, the downstream end of the heat storage flow path and the upstream end of the heat release flow path are located at the same end of the pipeline structure, and the flow direction of the heat storage flow path is opposite to the flow direction of the heat release flow path.

[0010] In some of these embodiments, the heat storage inlet, the heat storage outlet, the heat release inlet, and the heat release outlet are all located on the same side of the pipeline structure.

[0011] In some of these embodiments, the pipeline structure includes:

[0012] Heat exchange pipelines, with a plurality of the heat exchange pipelines arranged in parallel at intervals along a first direction, and at least one of the plurality of heat exchange pipelines defining at least one of the heat storage flow paths, and at least one of the other heat exchange pipelines defining at least one of the heat release flow paths;

[0013] A heat storage manifold pipeline, having the heat storage inlet and the heat storage outlet, and being connected to at least one of the heat exchange pipelines defining at least one of the heat storage flow paths, and the heat storage manifold pipeline is located on the side of the heat exchange pipelines;

[0014] A heat release manifold pipeline, having the heat release inlet and the heat release outlet, and being connected to at least one of the heat exchange pipelines defining at least one of the heat release flow paths, and the heat release manifold pipeline is located on the side of the heat exchange pipelines.

[0015] In some of these embodiments, both the heat storage manifold pipeline and the heat release manifold pipeline are arranged on the same side of the heat exchange pipelines.

[0016] In some of these embodiments, the heat storage manifold pipeline includes two heat storage header pipes, which are respectively arranged at the upstream end and the downstream end of the heat storage flow path, each heat storage header pipe is connected to at least one of the heat storage flow paths, and one of the two heat storage header pipes has the heat storage inlet, and the other has the heat storage outlet;

[0017] The heat release manifold pipeline includes two heat release header pipes, which are respectively arranged at the upstream end and the downstream end of the heat release flow path, each heat release header pipe is connected to at least one of the heat release flow paths, and one of the two heat release header pipes has the heat release inlet, and the other has the heat release outlet.

[0018] In some of these embodiments, the pipeline structure further includes a connecting pipeline, one end of the connecting pipeline is connected to the heat storage manifold pipeline or the heat release manifold pipeline, and the other end of the connecting pipeline is connected to the heat exchange pipelines.

[0019] In some of these embodiments, a plurality of heat exchange pipelines define a plurality of the heat storage flow paths and a plurality of the heat release flow paths, and the connecting pipeline includes:

[0020] A connecting main pipe, which is connected to the heat storage manifold pipeline or the heat release manifold pipeline;

[0021] A multi-way branch pipe, one end of the multi-way branch pipe communicates with the other end of the connecting main pipe, and the remaining ends of the multi-way branch pipe communicate with a plurality of the heat exchange pipelines;

[0022] Wherein, the connecting main pipe communicates with the heat storage collecting pipeline, and the remaining ends of the multi-way branch pipe communicate with a plurality of the heat storage flow paths, or the connecting main pipe communicates with the heat release collecting pipeline, and the remaining ends of the multi-way branch pipe communicate with a plurality of the heat release flow paths.

[0023] In some embodiments, the connecting main pipe is a straight pipe or a bent pipe.

[0024] In some embodiments, the heat exchange pipeline that defines the heat storage flow path is an aluminum pipe, and the heat exchange pipeline that defines the heat release flow path is a stainless steel pipe.

[0025] In some embodiments, the heat exchange pipeline is a finned pipeline, and the heat exchange pipeline meanders and extends along a second direction to form a plurality of bending loops, and the plurality of bending loops are reciprocally bent along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other, and the heat exchange pipeline has a plurality of fins arranged along the extending direction of the heat exchange pipeline.

[0026] In some embodiments, the housing includes an outer shell and an inner shell disposed inside the outer shell, the inner shell has the accommodating cavity, and a side surface of the inner shell is recessed inward to form a groove structure, the groove structure is located between the heat storage inlet and the heat storage outlet, and the groove structure is used for installing electronic components.

[0027] In some embodiments, the housing further includes a heat insulation structure, the heat insulation structure is disposed between the inner shell and the outer shell, and there is an installation space between an inner side surface of the outer shell and the heat insulation structure, and the heat storage inlet, the heat storage outlet, the heat release inlet, and the heat release outlet are all located in the installation space.

[0028] In some embodiments, the heat insulation structure includes a first heat insulation layer and a second heat insulation layer, the first heat insulation layer covers an outer surface of the inner shell, and the second heat insulation layer is disposed on a side of the first heat insulation layer facing away from the inner shell.

[0029] In some embodiments, a plurality of outlet pipes are provided on a side surface of the outer shell, and the plurality of outlet pipes are respectively disposed opposite to the heat storage inlet, the heat storage outlet, the heat release inlet, and the heat release outlet.

[0030] In some embodiments, the pipeline structure further has a drainage component, the drainage component is communicated with the exothermic flow path, and the drainage component is used for discharging accumulated water in the exothermic flow path.

[0031] In some embodiments, the drainage outlet of the drainage component is located in the installation space, and the drainage outlet is located at the upstream end or the downstream end of the exothermic flow path.

[0032] In some embodiments, the wall surface defining the installation space is provided with a water outlet, and the drainage outlet of the drainage component is arranged facing the water outlet.

[0033] In some embodiments, the heat storage device further includes a temperature sensing component, and the temperature sensing component is inserted into the phase change material from outside the accommodating cavity.

[0034] In a second aspect, an embodiment of the present application provides a heating and ventilation system, which 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 inlet and the heat storage outlet to transfer heat to the phase change material through the heat storage flow path, and the water utilization unit is communicated with the exothermic inlet and the exothermic outlet to transfer heat to the water utilization unit through the exothermic flow path.

[0035] In some 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 inlet and the heat storage outlet. The main heat source unit includes at least one of a solar heat collection module, a water source heat exchange module, and an air source heat exchange module, and the auxiliary heat source unit includes an electric heating module.

[0036] In some embodiments, the heating and ventilation 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, and the temperature control module is used for controlling the indoor temperature.

[0037] In some embodiments, the heating and ventilation system has:

[0038] A first working mode. When the heating and ventilation system is in the first working mode, the heat source module provides heat for the water utilization unit; and

[0039] A second working mode. When the heating and ventilation system is in the second working mode, the heat source module provides heat for the temperature control module.

[0040] Based on an embodiment of the present application, a heat storage device and a heating and ventilation system have at least the following beneficial effects:

[0041] By arranging a phase change material in the accommodation cavity of the housing and embedding the pipeline structure in the phase change material, and the pipeline structure has a plurality of heat storage flow paths and a plurality of heat release flow paths, the heat storage flow paths can transfer heat to the phase change material, and the heat release flow paths can absorb the heat stored in the phase change material, so as to realize the heat exchange between the heat storage flow paths and the heat release flow paths. The pipeline structure includes 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. Among them, the heat storage inlet and the heat storage outlet are respectively located at the upstream end and the downstream end of the heat storage flow paths, and the upstream end and the downstream end of the heat storage flow paths are respectively located at opposite ends of the pipeline structure, so that the heat storage inlet and the heat storage outlet are respectively located at opposite ends of the pipeline structure. Similarly, the heat release inlet and the heat release outlet are respectively located at the upstream end and the downstream end of the heat release flow paths, and the upstream end and the downstream end of the heat release flow paths are also respectively located at opposite ends of the pipeline structure, so that the heat release inlet and the heat release outlet are also respectively located at opposite ends of the pipeline structure. Therefore, compared with arranging the heat storage inlet, the heat storage outlet, the heat release inlet and the heat release outlet at the same end of the pipeline structure, there is no need to arrange additional pipelines to aggregate the heat storage inlet and the heat storage outlet to the same end, and there is also no need to arrange additional pipelines to aggregate the heat release inlet and the heat release outlet to the same end, which can reduce the length of the pipelines and can reduce the material cost and the manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] 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 use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained according to these drawings.

[0043] Figure 1 Schematic perspective view of a heat storage device provided by an embodiment of the present application;

[0044] Figure 2 Schematic front view of a heat storage device provided by an embodiment of the present application;

[0045] Figure 3 For Figure 2 Cross-sectional structure schematic diagram at A-A in

[0046] Figure 4 Schematic perspective view of a pipeline structure provided by an embodiment of the present application;

[0047] Figure 5 Schematic side view of a pipeline structure provided by an embodiment of the present application;

[0048] Figure 6 For Figure 4 Enlarged structure schematic diagram at B in

[0049] Figure 7 Schematic structural diagram of the connection pipeline and the heat storage manifold provided by the embodiment of the present application;

[0050] Figure 8 Explosion diagram of the heat storage device provided by the embodiment of the present application;

[0051] Figure 9 Explosion diagram of the heat insulation structure provided by the embodiment of the present application;

[0052] Figure 10 Schematic structural diagram of the first HVAC system provided by the embodiment of the present application;

[0053] Figure 11 Schematic structural diagram of the second HVAC system provided by the embodiment of the present application.

[0054] 100. Heat storage device; 1. Housing; 11. Outer shell; 111. Installation space; 112. Outlet pipe; 12. Inner shell; 121. Accommodation cavity; 122. Groove structure; 13. Heat insulation structure; 131. Avoidance hole; 132. Avoidance port; 133. First heat insulation layer; 134. Second heat insulation layer; 2. Phase change material; 3. Pipeline structure; 31. Heat exchange pipeline; 311. Heat storage flow path; 312. Heat release flow path; 32. Heat storage summary pipeline; 321. Heat storage manifold; 3211. Heat storage inlet; 3212. Heat storage outlet; 33. Heat release summary pipeline; 331. Heat release manifold; 3311. Heat release inlet; 3312. Heat release outlet; 34. Connection pipeline; 341. Connection main pipe; 342. Multi-way branch pipe; 35. Drainage component; 4. Temperature sensing component; 5. Electric control box; 200. HVAC system; 201. Heat source module; 202. Water utilization unit; 203. Temperature regulation module. Detailed implementation manners

[0055] In order to make the objectives, technical solutions and advantages of the present application clearer, 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.

[0056] Please refer to Figures 1 to 3 , a heat storage device 100 provided by the embodiment of the present application. The heat storage device 100 is a device capable of storing and releasing thermal energy. The working principle of the heat storage device 100 is based on the phase change characteristics of the phase change material 2, and uses the characteristics of the phase change material 2 absorbing or releasing a large amount of thermal energy during the phase change (such as solid-liquid, liquid-gas) process to store energy.

[0057] The heat storage device 100 can include a housing 1, a phase change material 2, and a pipeline structure 3. The interior of the housing 1 can have a receiving cavity 121, the phase change material 2 can be arranged in the receiving cavity 121, and at least part of the pipeline structure 3 can be buried in the phase change material 2 so that the pipeline structure 3 can exchange heat with the phase change material 2.

[0058] Combined with Figure 4 As shown, optionally, the pipeline structure 3 can have a heat storage inlet 3211, a heat storage flow path 311, and a heat storage outlet 3212 that are connected in sequence. The pipeline structure 3 can also have a heat release inlet 3311, a heat release flow path 312, and a heat release outlet 3312 that are connected in sequence. In this embodiment, the pipeline structure 3 has a plurality of heat storage flow paths 311 and a plurality of heat release flow paths 312. The plurality of heat storage flow paths 311 and the plurality of heat release flow paths 312 can be arranged alternately and spaced apart along the first direction, and both the heat storage flow path 311 and the heat release flow path 312 are buried in the phase change material 2, so that the heat storage flow path 311 can transfer heat to the phase change material 2, and the heat release flow path 312 can absorb the heat stored in the phase change material 2, thereby realizing heat exchange between the heat storage flow path 311 and the heat release flow path 312.

[0059] Specifically, during the heat storage process, a hot fluid (a fluid carrying thermal energy) flows into the heat storage device 100 through the heat storage flow path 311. The hot fluid transfers heat to the phase change material 2, causing the temperature of the phase change material 2 to rise and store thermal energy. When it is necessary to utilize the thermal energy stored in the phase change material 2, a heat release process will occur. During the heat release process, a cold fluid flows into the heat storage device 100 through the heat release flow path 312 and flows out after absorbing the heat of the phase change material 2.

[0060] Optionally, the upstream end of the heat storage flow path 311 has a heat storage inlet 3211, the downstream end of the heat storage flow path 311 has a heat storage outlet 3212, and the upstream end and the downstream end of the heat storage flow path 311 are respectively located at opposite ends of the pipeline structure 3, so that the heat storage inlet 3211 and the heat storage outlet 3212 are respectively located at opposite ends of the pipeline structure 3. Similarly, the upstream end of the heat release flow path 312 has a heat release inlet 3311, the downstream end of the heat release flow path 312 has a heat release outlet 3312, and the upstream end and the downstream end of the heat release flow path 312 are also respectively located at opposite ends of the pipeline structure 3, so that the heat release inlet 3311 and the heat release outlet 3312 are also respectively located at opposite ends of the pipeline structure 3.

[0061] Therefore, compared with the case where the heat storage inlet 3211, the heat storage outlet 3212, the heat release inlet 3311, and the heat release outlet 3312 are provided at the same end of the pipeline structure 3, there is no need to provide additional pipelines to aggregate the heat storage inlet 3211 and the heat storage outlet 3212 to the same end, and there is also no need to provide additional pipelines to aggregate the heat release inlet 3311 and the heat release outlet 3312 to the same end, which can reduce the length of the pipeline and can reduce the material cost and the manufacturing cost.

[0062] Please refer to Figure 4 and Figure 5 , in some embodiments, the upstream end of the heat storage flow path 311 and the downstream end of the heat release flow path 312 are located at the same end of the pipeline structure 3, and the downstream end of the heat storage flow path 311 and the upstream end of the heat release flow path 312 are located at the same end. It can also be said that the heat storage inlet 3211 and the heat release outlet 3312 are located at the first end of the pipeline structure 3, and the heat storage outlet 3212 and the heat release inlet 3311 are located at the second end of the pipeline structure 3. The first end and the second end are opposite ends of the pipeline structure 3, so that the flow direction of the heat storage flow path 311 is opposite to the flow direction of the heat release flow path 312, which can maximize the temperature difference between the hot fluid and the cold fluid, thereby improving the heat exchange efficiency.

[0063] Optionally, taking the heat storage inlet 3211 being located at the upper end of the pipeline structure 3, the heat storage outlet 3212 being located at the lower end of the pipeline structure 3, the heat release inlet 3311 being located at the lower end of the pipeline structure 3, and the heat release outlet 3312 being located at the upper end of the pipeline structure 3 as an example for illustration.

[0064] Specifically, the hot fluid can flow into the heat storage flow path 311 from the upper end of the pipeline structure 3 and flow out of the heat storage flow path 311 from the lower end of the pipeline structure 3, while the cold fluid can flow into the heat release flow path 312 from the lower end of the pipeline structure 3 and flow out of the heat release flow path 312 from the upper end of the pipeline structure 3. Among them, as the hot fluid flows downward, the hot fluid gradually transfers heat to the phase change material 2 or the cold fluid, causing the temperature of the phase change material 2 and the cold fluid to rise. Finally, the hot fluid flows out of the heat storage flow path 311 from the lower end of the pipeline structure 3. At this time, the temperature of the hot fluid has decreased, but the temperature of the hot fluid flowing out of the heat storage flow path 311 is still higher than the temperature of the cold fluid just flowing into the heat release flow path 312. The cold fluid just entering the heat release flow path 312 can exchange heat with the hot fluid. As the cold fluid flows upward, the cold fluid gradually absorbs heat, causing the temperature of the cold fluid itself to rise. Finally, the cold fluid flows out of the heat release flow path 312 from the upper end of the pipeline structure 3. However, the temperature of the cold fluid flowing out of the heat release flow path 312 is still lower than the temperature of the hot fluid just entering the heat storage flow path 311, and the cold fluid can still exchange heat with the hot fluid, enabling the heat to be better utilized during the transfer process and reducing the heat loss caused by the decrease in the temperature difference.

[0065] Please refer toFigure 4 and Figure 5 , in some embodiments, the heat storage inlet 3211, the heat storage outlet 3212, the heat release inlet 3311, and the heat release outlet 3312 are all located on the same side of the pipeline structure 3, so that the pipeline interfaces of the heat storage device 100 are all located on the same side, which can reduce the space occupied by the pipeline interfaces and make the interior of the heat storage device 100 more compactly designed.

[0066] Please refer to Figure 4 and Figure 5 , in some embodiments, the pipeline structure 3 can include a heat exchange pipeline 31, a heat storage summary pipeline 32, and a heat release summary pipeline 33.

[0067] Optionally, a plurality of heat exchange pipelines 31 can be arranged in parallel at intervals along the first direction, and a phase change material 2 is provided between two adjacent heat exchange pipelines 31. At least one of the plurality of heat exchange pipelines 31 can define at least one heat storage flow path 311, and at least one of the other heat exchange pipelines 31 can define at least one heat release flow path 312.

[0068] Specifically, several of the plurality of heat exchange pipelines 31 can define several heat storage flow paths 311, and the other heat exchange pipelines 31 can define several heat release flow paths 312, and the several heat storage flow paths 311 and the several heat release flow paths 312 can be alternately arranged in sequence. That is to say, a heat release flow path 312 is provided between every two adjacent heat storage flow paths 311, and a heat storage flow path 311 is provided between every two adjacent heat release flow paths 312, which can improve the heat exchange efficiency of the heat storage flow path 311 and the heat release flow path 312.

[0069] The heat storage summary pipeline 32 can have a heat storage inlet 3211 and a heat storage outlet 3212, and the heat storage summary pipeline 32 can communicate with the heat exchange pipeline 31 that defines the heat storage flow path 311. The heat storage summary pipeline 32 is located on the side of the heat exchange pipeline 31. By connecting the heat storage summary pipeline 32 with a plurality of heat storage flow paths 311, after the hot fluid flows into the heat storage summary pipeline 32 from the heat storage inlet 3211, the hot fluid can be divided and flow into a plurality of heat storage flow paths 311. And at the downstream end of the plurality of heat storage flow paths 311, the hot fluid in the plurality of heat storage flow paths 311 can gather together and flow out from the heat storage outlet 3212. By providing the heat storage summary pipeline 32, it is convenient for the hot fluid to flow into a plurality of heat storage flow paths 311 at the same time and the hot fluid in the plurality of heat storage flow paths 311 to flow out at the same time.

[0070] Similarly, the heat release collecting pipeline 33 can have a heat release inlet 3311 and a heat release outlet 3312, and the heat release collecting pipeline 33 can communicate with the heat exchange pipeline 31 that defines the heat release flow path 312. The heat release collecting pipeline 33 is located on the side of the heat exchange pipeline 31. By connecting the heat release collecting pipeline 33 with a plurality of heat release flow paths 312, after the cold fluid flows into the heat release collecting pipeline 33 from the heat release inlet 3311, the cold fluid can also be split and flow into a plurality of heat release flow paths 312. And at the downstream ends of the plurality of heat release flow paths 312, the cold fluid in the plurality of heat release flow paths 312 can be gathered together and flow out from the heat release outlet 3312. By providing the heat release collecting pipeline 33, the cold fluid in the plurality of heat release flow paths 312 can be gathered together and flow out, which is convenient for users to use the heated cold fluid.

[0071] Please refer to Figure 5 , in some embodiments, both the heat storage collecting pipeline 32 and the heat release collecting pipeline 33 are arranged on the same side of the heat exchange pipeline 31, which can reduce the space occupied by the heat storage collecting pipeline 32 and the heat release collecting pipeline 33, so that the interior of the heat storage device 100 can be designed to be more compact.

[0072] Please refer to Figure 4 and Figure 5 , in some embodiments, the heat storage collecting pipeline 32 can include two heat storage manifold tubes 321, which are respectively arranged at the upstream end and the downstream end of the heat storage flow path 311. Each heat storage manifold tube 321 can communicate with at least one heat storage flow path 311, and one of the two heat storage manifold tubes 321 has a heat storage inlet 3211, and the other has a heat storage outlet 3212.

[0073] Optionally, the two heat storage manifold tubes 321 can be arranged at the upper end and the lower end of the pipeline structure 3, and one heat storage manifold tube 321 can communicate with the upstream ends of a plurality of heat storage flow paths 311. The heat storage manifold tube 321 communicating with the upstream ends of the heat storage flow paths 311 has a heat storage inlet 3211, and the other heat storage manifold tube 321 can communicate with the downstream ends of a plurality of heat storage flow paths 311. The heat storage manifold tube 321 communicating with the downstream ends of the heat storage flow paths 311 has a heat storage outlet 3212, so that the heat storage inlet 3211 and the heat storage outlet 3212 are respectively located at the upper and lower ends of the pipeline structure 3, thus eliminating the need to provide a pipeline extending from the lower end to the upper end of the pipeline structure 3 to gather the heat storage inlet 3211 and the heat storage outlet 3212 to the same end, which can save the pipeline length.

[0074] Similarly, in some embodiments, the heat release manifold line 33 can include two heat release headers 331. The two heat release headers 331 are respectively disposed at the upstream end and the downstream end of the heat release flow path 312. Each heat release header 331 can communicate with at least one heat release flow path 312, and one of the two heat release headers 331 has a heat release inlet 3311, and the other has a heat release outlet 3312.

[0075] Optionally, the two heat release headers 331 can be disposed at the upper end and the lower end of the pipeline structure 3. And one heat release header 331 can communicate with the upstream ends of a plurality of heat release flow paths 312. The heat release header 331 communicating with the upstream ends of the heat release flow paths 312 has a heat release inlet 3311. The other heat release header 331 can communicate with the downstream ends of a plurality of heat release flow paths 312. The heat release header 331 communicating with the downstream ends of the heat release flow paths 312 has a heat release outlet 3312, such that the heat release inlet 3311 and the heat release outlet 3312 are respectively located at the upper and lower ends of the pipeline structure 3, so that there is no need to provide a pipeline extending from the lower end to the upper end of the pipeline structure 3 to collect the heat release inlet 3311 and the heat release outlet 3312 at the same end, and the pipeline length can be saved.

[0076] Please refer to Figure 4 , in some embodiments, the pipeline structure 3 can further include a connecting pipeline 34. One end of the connecting pipeline 34 can communicate with the heat storage manifold line 32 or the heat release manifold line 33, and the other end of the connecting pipeline 34 can communicate with the heat exchange pipeline 31, such that both the heat storage manifold line 32 and the heat release manifold line 33 can communicate with the heat exchange pipeline 31.

[0077] Combined with Figure 6 and Figure 7 As shown, optionally, the connecting pipeline 34 can include a connecting main pipe 341 and a multi-way branch pipe 342. Each connecting main pipe 341 can communicate with the heat storage manifold line 32 or the heat release manifold line 33, and each connecting main pipe 341 can further communicate with one end of the multi-way branch pipe 342. The remaining ends of the multi-way branch pipe 342 can communicate with a plurality of heat exchange pipelines 31, such that the heat storage manifold line 32 or the heat release manifold line 33 can communicate with a plurality of heat exchange pipelines 31 through the multi-way branch pipe 342.

[0078] Specifically, the connecting pipeline 34 can include a plurality of connecting main pipes 341 and a plurality of multi-way branch pipes 342. Each connecting main pipe 341 can communicate with one end of a multi-way branch pipe 342, and the remaining ends of the multi-way branch pipe 342 can communicate with a plurality of heat exchange pipelines 31. And at least one of the plurality of connecting main pipes 341 can connect the heat storage manifold line 32 with a plurality of heat storage flow paths 311, and the remaining connecting main pipes 341 of the plurality of connecting main pipes 341 can connect the heat release manifold line 33 with a plurality of heat release flow paths 312.

[0079] Taking the multi-way branch pipe 342 as a tee pipe as an example, through the multi-way branch pipe 342, two heat storage flow paths 311 or two heat release flow paths 312 can be gathered into a connecting main pipe 341. Compared with the structure in the prior art where one heat exchange pipeline 31 corresponds to one connecting main pipe 341, this solution can relatively reduce the number of connecting main pipes 341, thereby occupying less space inside the housing 1. When the number of connecting main pipes 341 is reduced, the released space can be used to install other components, and the space utilization rate is higher.

[0080] Please refer to Figure 6 and Figure 7 , in some embodiments, the connecting main pipe 341 can be a straight pipe or a bent pipe.

[0081] Optionally, a heat storage manifold 321 and a heat release manifold 331 are arranged adjacent to each other vertically, and the connecting main pipe 341 connected to the heat storage manifold 321 is a straight pipe, the connecting main pipe 341 connected to the heat release manifold 331 is a bent pipe, and one connecting main pipe 341 extends bent towards the other connecting main pipe 341, so that both connecting main pipes 341 can be connected to the top of the heat exchange pipeline 31, making the flow path of the fluid in the heat exchange pipeline 31 longer.

[0082] In some embodiments, the heat exchange pipeline 31 defining the heat storage flow path 311 is an aluminum pipe. Aluminum is an excellent heat-conducting material, and its heat conduction coefficient is higher than that of many other metals. Therefore, as the heat exchange pipeline 31 of the heat storage flow path 311, the aluminum pipe can quickly transfer heat from the hot fluid to the pipe wall and effectively transfer the heat to the phase change material 2. 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 2 quickly and evenly. And the heat exchange pipeline 31 defining the heat release flow path 312 is a stainless steel pipe. The heat release flow path 312 is connected to the municipal water supply, and the municipal water generally 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 pipe can effectively resist the erosion of these corrosion factors, thereby ensuring the long-term stable operation of the heat exchange pipeline 31.

[0083] In some embodiments, the heat exchange pipeline 31 is a finned pipeline. The finned pipeline improves the heat transfer ability by installing heat transfer fins on the heat exchange pipeline 31.

[0084] Optionally, the top of the heat exchange pipeline 31 and the bottom of the heat exchange pipeline 31 are arranged opposite to each other along the second direction, and the heat exchange pipeline 31 can extend meanderingly along the second direction to form a plurality of bending loops, and the plurality of bending loops can be bent back and forth along the third direction, where the first direction, the second direction, and the third direction are perpendicular to each other.

[0085] Combined with Figures 3 to 5As shown, the direction of the X-axis is the first direction, the direction of the Z-axis is the second direction, and the direction of the Y-axis is the third direction.

[0086] Taking the example where 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.

[0087] Specifically, each heat exchange pipeline 31 can include a plurality of straight pipelines and a plurality of U-shaped pipelines. The straight pipelines extend along the third direction, and the plurality of straight pipelines are arranged in parallel at intervals along the second direction. Two adjacent straight pipelines on the same side can be connected through a U-shaped pipeline. Thus, after two straight pipelines and a U-shaped pipeline are connected, a bending loop can be formed. A plurality of bending loops are connected in sequence to form a heat exchange pipeline 31 that reciprocally bends along the third direction. Heat exchange through the heat exchange pipeline 31 not only improves the heat exchange efficiency but also optimizes the space utilization rate.

[0088] Specifically, each heat exchange pipeline 31 has a plurality of fins arranged along the third direction, and each heat exchange pipeline 31 can pass through a plurality of fins along the third direction. Through the fins, the heat exchange area of the heat exchange pipeline 31 can be increased, thereby improving the heat exchange efficiency of the heat exchange pipeline 31.

[0089] Please refer to Figure 3 , in some embodiments, the housing 1 can further include an outer shell 11 and an inner shell 12 disposed inside the outer shell 11. The inner shell 12 can have a receiving cavity 121, and the side surface of the inner shell 12 can be recessed inward to form a groove structure 122. The groove structure 122 can be located between the heat storage inlet 3211 and the heat storage outlet 3212. The groove structure 122 can exactly form a receiving space, so that electronic components can be disposed in the groove structure 122, making the space inside the outer shell 11 more compact and improving the space utilization rate.

[0090] Preferably, the groove structure 122 can be used to install the electric control box 5, so that the electric control box 5 can be compactly disposed between the outer shell 11 and the inner shell 12, making full use of the space between the outer shell 11 and the inner shell 12.

[0091] Please refer to Figure 8 , in some embodiments, the housing 1 can further include a heat insulation structure 13. The heat insulation structure 13 can be disposed between the inner shell 12 and the outer shell 11. The heat insulation structure 13 can cover the outer surface of the inner shell 12. The heat insulation structure 13 can play a heat insulation role, can reduce the heat transfer from the inside of the inner shell 12 to the outside, and further can prevent the heat stored in the phase change material 2 from being dissipated, further improving the heat exchange efficiency between the heat exchange pipeline 31 and the phase change material 2.

[0092] Optionally, the heat insulation structure 13 can cover the outer side surface of the inner shell 12, and the heat insulation structure 13 on the outer side surface of the inner shell 12 can be provided with an avoidance opening 132 and a plurality of avoidance holes 131, and there is an installation space 111 between the inner side surface of the outer shell 11 and the heat insulation structure 13 on the outer side surface of the inner shell 12. Among them, the avoidance opening 132 can be oppositely arranged with the opening of the groove structure 122, so that the electric control box 5 can extend into the installation space 111 from the avoidance opening 132, which can further facilitate the installation of the electric control box 5, and the plurality of avoidance holes 131 are respectively oppositely arranged with the pipelines defining the heat storage inlet 3211, the heat storage outlet 3212, the heat release inlet 3311 and the heat release outlet 3312, so that the heat storage inlet 3211, the heat storage outlet 3212, the heat release inlet 3311 and the heat release outlet 3312 can respectively pass through the corresponding avoidance holes 131 and extend into the installation space 111, which can facilitate the connection between the external pipelines and the heat storage inlet 3211, the heat storage outlet 3212, the heat release inlet 3311 and the heat release outlet 3312.

[0093] Please refer to Figure 9 , in some embodiments, the heat insulation structure 13 can include a first heat insulation layer 133 and a second heat insulation layer 134. The first heat insulation layer 133 covers the outer surface of the inner shell 12, and the second heat insulation layer 134 is arranged on the side of the first heat insulation layer 133 facing away from the inner shell 12, and the heat insulation coefficient of the first heat insulation layer 133 is lower than that of the second heat insulation layer 134.

[0094] Optionally, the first heat insulation layer 133 is attached to the outer wall surface of the inner shell 12. The heat insulation coefficient of the first heat insulation layer 133 is lower than that of the second heat insulation layer 134, which can better insulate the inner shell 12. The structural strength of the second heat insulation layer 134 is better than that of the first heat insulation layer 133. Therefore, although the heat insulation coefficient of the second heat insulation layer 134 is higher than that of the first heat insulation layer 133, the second heat insulation layer 134 can protect the first heat insulation layer 133 and prevent the first heat insulation layer 133 from being damaged.

[0095] Specifically, the heat insulation structure 13 can include six first heat insulation layers 133, and the six first heat insulation layers 133 are respectively arranged on the six outer wall surfaces of the inner shell 12. The heat insulation structure 13 can also include six second heat insulation layers 134, and the six second heat insulation layers 134 are arranged in one-to-one correspondence with the six first heat insulation layers 133. The first heat insulation layer 133 and the second heat insulation layer 134 on one side surface of the inner shell 12 are provided with an avoidance opening 132 and avoidance holes 131. The avoidance openings 132 on the first heat insulation layer 133 and the second heat insulation layer 134 are overlapped, which can facilitate the installation of the electric control box 5, and the avoidance holes 131 on the first heat insulation layer 133 and the avoidance holes 131 on the second heat insulation layer 134 are coaxially arranged, which can facilitate the extension of the collection ports of the heat storage manifold 321 and the heat release manifold 331.

[0096] Please refer to Figure 1 、 Figure 3 and Figure 8 In some embodiments, a plurality of outlet pipes 112 can be provided on the side surface of the outer shell 11, and the plurality of outlet pipes 112 can be respectively arranged opposite to the heat storage inlet 3211, the heat storage outlet 3212, the heat release inlet 3311, and the heat release outlet 3312. Thus, the external pipeline can extend into the installation space 111 from the outlet pipe 112 and be connected to the heat storage inlet 3211, the heat storage outlet 3212, the heat release inlet 3311, and the heat release outlet 3312 respectively.

[0097] Please refer to Figure 10 In some embodiments, the pipeline structure 3 can further include a drainage component 35. The drainage component 35 can communicate with the heat release flow path 312, and the drainage component 35 can drain the accumulated water in the heat release flow path 312, preventing the accumulation of water in the heat release flow path 312 and preventing the growth of bacteria due to the accumulated water and subsequent contamination of normal water use.

[0098] Optionally, the drainage outlet of the drainage component 35 is located in the installation space 111, and the drainage outlet is located at the upstream end or the downstream end of the heat release flow path 312. It should be noted that when the heat storage device 100 is placed vertically and the upstream end of the heat release flow path 312 is located at the lower end of the heat storage device 100, the drainage outlet is located at the upstream end of the heat release flow path 312. Or, when the downstream end of the heat release flow path 312 is located at the lower end of the heat storage device 100, the drainage outlet is located at the downstream end of the heat release flow path 312, so that the accumulated water inside the heat release flow path 312 can be drained from the drainage outlet under the action of its own gravity.

[0099] Optionally, the wall surface defining the installation space 111 can be provided with a water outlet, and the drainage outlet of the drainage component 35 can be arranged facing the water outlet, so that the drainage outlet can be arranged opposite to the water outlet, facilitating the external pipeline to extend into the installation space 111 from the water outlet and communicate with the drainage outlet, and facilitating the drainage of the accumulated water in the heat release flow path 312 from the outer shell 11.

[0100] Please refer to Figure 3 In some embodiments, the heat storage device 100 can further include a temperature sensing component 4, and the temperature sensing component 4 can be inserted into the phase change material 2 from outside the accommodation cavity 121.

[0101] Optionally, the temperature sensing component 4 can be inserted into the phase change material 2 to a preset depth, so that the temperature sensing component 4 can detect the temperature of the phase change material 2 at the preset depth. Therefore, by inserting the temperature sensing component 4 into the phase change material 2 to the preset depth, the temperature change of the phase change material 2 in a specified area inside the heat storage device 100 can be accurately monitored.

[0102] Please refer to Figure 10, in some embodiments, a heating, ventilation and air conditioning (HVAC) system 200 provided by the embodiments of the present application is capable of providing 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.

[0103] Specifically, the heat source module 201 can be connected to a heat storage inlet 3211 and a heat storage outlet 3212 in communication, such that the hot fluid in the heat source module 201 can flow into a heat storage flow path 311. The heat storage flow path 311 can transfer heat to the phase change material 2, and the water utilization unit 202 can be connected to a heat release inlet 3311 and a heat release outlet 3312 in communication, such that after cold water flows into a heat release flow path 312, it can absorb the heat of the phase change material 2. After the cold water is heated into hot water, it can be used by users, thereby being able to provide clean hot water to users in real time without the need to set up a water tank to store hot water.

[0104] 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 connected to the heat storage inlet 3211 and the heat storage outlet 3212 in communication, such that both the main heat source unit and the auxiliary heat source unit can transfer heat to the phase change material 2 through the heat storage flow path 311.

[0105] The main heat source unit can include at least one of a solar heat collection module, a water source heat exchange module, and an air source heat exchange module. Under conditions permitting, more environmentally friendly natural energy sources such as a solar heat collection module, a water source heat exchange module, and an air source heat exchange module are preferentially used to perform heat exchange with the phase change material 2, thereby being able to save energy.

[0106] 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 the heat energy supply.

[0107] Please refer to Figure 11 , in some embodiments, the HVAC system 200 can further include a temperature regulation module 203. The temperature regulation 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 further has a first working mode and a second working mode.

[0108] When the HVAC system 200 is in the first working mode, the heat source module 201 can provide heat to the phase change material 2, such that the water utilization unit 202 can absorb the heat stored in the phase change material 2 to heat cold water, thereby providing hot water to users; when the HVAC system 200 is in the second working mode, the heat source module 201 can provide heat to the temperature regulation module 203, such that the temperature regulation module 203 can be used to adjust the indoor temperature.

[0109] 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 cannot 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.

[0110] The above description is only a preferred embodiment of the present application and is 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 having a receiving cavity, wherein a phase change material is disposed in the receiving cavity; A pipeline structure disposed in the receiving cavity, and at least a part of the pipeline structure is located in the phase change material. The pipeline structure has a heat storage inlet, a heat storage flow path, and a heat storage outlet that are connected in sequence, and the pipeline structure also has a heat release inlet, a heat release flow path, and a heat release outlet that are connected in sequence; Wherein, the heat storage inlet is located at the upstream end of the heat storage flow path, the heat storage outlet is located at the downstream end of the heat storage flow path, the upstream end and the downstream end of the heat storage flow path are respectively located at opposite ends of the pipeline structure, the heat release inlet is located at the upstream end of the heat release flow path, the heat release outlet is located at the downstream end of the heat release flow path, and the upstream end and the downstream end of the heat release flow path are respectively located at opposite ends of the pipeline structure.

2. The heat storage device according to claim 1, characterized in that, The upstream end of the heat storage flow path and the downstream end of the heat release flow path are located at the same end of the pipeline structure, the downstream end of the heat storage flow path and the upstream end of the heat release flow path are located at the same end of the pipeline structure, and the flow direction of the heat storage flow path is opposite to the flow direction of the heat release flow path.

3. The heat storage device according to claim 1, characterized in that The heat storage inlet, the heat storage outlet, the heat release inlet, and the heat release outlet are all located on the same side of the pipeline structure.

4. The heat storage device according to any one of claims 1 to 3, characterized in that The pipeline structure includes: Heat exchange pipelines, a plurality of the heat exchange pipelines are arranged in parallel at intervals along a first direction, and at least one of the plurality of heat exchange pipelines defines at least one of the heat storage flow paths, and at least one of the other heat exchange pipelines defines at least one of the heat release flow paths; A heat storage summary pipeline having the heat storage inlet and the heat storage outlet, and being connected to at least one of the heat exchange pipelines that define at least one of the heat storage flow paths, and the heat storage summary pipeline is located on the side of the heat exchange pipelines; A heat release summary pipeline having the heat release inlet and the heat release outlet, and being connected to at least one of the heat exchange pipelines that define at least one of the heat release flow paths, and the heat release summary pipeline is located on the side of the heat exchange pipelines.

5. The heat storage device according to claim 4, characterized in that, Both the heat storage summary pipeline and the heat release summary pipeline are arranged on the same side of the heat exchange pipelines.

6. The heat storage device according to claim 4, characterized in that: The heat storage summary pipeline includes two heat storage manifold tubes, the two heat storage manifold tubes are respectively arranged at the upstream end and the downstream end of the heat storage flow path, each heat storage manifold tube is connected to at least one of the heat storage flow paths, and one of the two heat storage manifold tubes has the heat storage inlet, and the other has the heat storage outlet; The heat release summary pipeline includes two heat release manifold tubes, the two heat release manifold tubes are respectively arranged at the upstream end and the downstream end of the heat release flow path, each heat release manifold tube is connected to at least one of the heat release flow paths, and one of the two heat release manifold tubes has the heat release inlet, and the other has the heat release outlet.

7. The heat storage device according to claim 4, wherein The pipeline structure further includes: Connecting pipelines, one end of the connecting pipelines is connected to the heat storage summary pipeline or the heat release summary pipeline, and the other end of the connecting pipelines is connected to the heat exchange pipelines.

8. The heat storage device according to claim 7, wherein a plurality of heat exchange pipelines define a plurality of the heat storage flow paths and a plurality of the heat release flow paths, the connecting pipeline includes: a connecting main pipe, the connecting main pipe communicating with the heat storage collecting pipeline or the heat release collecting pipeline; a multi-way branch pipe, one end of the multi-way branch pipe communicating with the other end of the connecting main pipe, and the remaining ends of the multi-way branch pipe communicating with a plurality of the heat exchange pipelines; wherein, the connecting main pipe communicates with the heat storage collecting pipeline, and the remaining ends of the multi-way branch pipe communicate with a plurality of the heat storage flow paths, or the connecting main pipe communicates with the heat release collecting pipeline, and the remaining ends of the multi-way branch pipe communicate with a plurality of the heat release flow paths.

9. The heat storage device according to claim 8, wherein The connecting main pipe is a straight pipe or a bent pipe.

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

11. The heat storage device according to claim 4, wherein The heat exchange pipeline is a finned pipeline, and the heat exchange pipeline extends in a meandering manner along a second direction to form a plurality of bending loops, and the plurality of bending loops are reciprocally bent along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other, and the heat exchange pipeline has a plurality of fins arranged along the extending direction of the heat exchange pipeline.

12. The heat storage device according to claim 1, wherein, The housing includes an outer shell and an inner shell disposed inside the outer shell, the inner shell having the accommodating cavity, and a groove structure is formed by the inner side surface of the inner shell indenting inward, the groove structure being located between the heat storage inlet and the heat storage outlet, and the groove structure is used for installing electronic components.

13. The heat storage device according to claim 12, characterized in that, The housing further includes a heat insulation structure, the heat insulation structure being disposed between the inner shell and the outer shell, and there is an installation space between the inner side surface of the outer shell and the heat insulation structure, and the heat storage inlet, the heat storage outlet, the heat release inlet, and the heat release outlet are all located in the installation space.

14. The heat storage device according to claim 13, characterized in that, The heat insulation structure includes a first heat insulation layer and a second heat insulation layer, the first heat insulation layer covering the outer surface of the inner shell, and the second heat insulation layer being disposed on a side of the first heat insulation layer facing away from the inner shell.

15. The heat storage device according to claim 13, characterized in that, A plurality of outlet pipes are provided on the side surface of the outer shell, and the plurality of outlet pipes are respectively disposed opposite to the heat storage inlet, the heat storage outlet, the heat release inlet, and the heat release outlet.

16. The heat storage device according to claim 13, characterized in that, The pipeline structure further has a drainage component, the drainage component communicating with the heat release flow path, and the drainage component being used for draining accumulated water in the heat release flow path.

17. The heat storage device according to claim 16, wherein, The drainage port of the drainage component is located in the installation space, and the drainage port is located at the upstream end or the downstream end of the heat release flow path.

18. The heat storage device according to claim 16, characterized in that, A water outlet is provided on the wall surface defining the installation space, and the drainage port of the drainage component faces the water outlet.

19. The heat storage device according to claim 1, wherein The heat storage device further includes a temperature sensing component, and the temperature sensing component is inserted into the phase change material from outside the accommodating cavity.

20. 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 as described in any one of claims 1-19. The heat source module is communicated with the heat storage inlet and the heat storage outlet to transfer heat to the phase change material through the heat storage flow path. The water utilization unit is communicated with the heat release inlet and the heat release outlet to transfer heat to the water utilization unit through the heat release flow path.

21. The HVAC system according to claim 20, wherein, 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 inlet and the heat storage outlet. The main heat source unit includes at least 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.

22. The HVAC system according to claim 20, wherein, 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.

23. The HVAC system according to claim 22, 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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