Finned tube heat exchanger and heating and ventilation system

Abstract

The utility model relates to a finned tube heat exchanger and a heating and ventilation system, and a plurality of heat conduction spaces which are arranged at intervals are arranged in honeycomb fins. The heat storage pipes and the heat release pipes in the heat exchange pipe set are each provided with a plurality of straight pipe sections, each straight pipe section is arranged in the corresponding heat conduction space in the extending direction of the heat conduction space in a penetrating mode, and gaps between the heat storage pipes and the honeycomb-shaped fins and gaps between the heat release pipes and the honeycomb-shaped fins are filled with the phase change materials. According to the heat exchanger, the honeycomb-shaped structure can ensure the heat distribution uniformity, the straight pipe sections in the heat storage pipes and the heat release pipes are arranged in the heat conduction spaces of the honeycomb-shaped fins in a penetrating mode, the heat transfer efficiency is improved, and then a heat exchange dead zone is eliminated. According to the heat exchanger, the specific surface of the honeycomb-shaped fins is large, so that the contact area of the honeycomb-shaped fins and the phase change material is large, the heat exchange area is effectively increased on the premise that the filling amount of the phase change material is not sacrificed, the same heat exchange effect can be achieved by adopting fewer heat storage pipes and heat release pipes, and the material cost is reduced.

Description

Technical Field

[0001] This application relates to the technical field of heat exchangers, and particularly relates to a finned tube heat exchanger and a heating and ventilation system. Background Art

[0002] Currently, although storage water heaters dominate the hot water supply field, problems such as low energy efficiency, large space occupation, and insufficient instant hot water supply are becoming increasingly prominent. In contrast, phase change heat storage and heat exchange devices have gradually attracted attention due to their advantages of high-efficiency energy storage, rapid heat release, and optimized space utilization. Phase change heat storage and heat exchange devices mostly use copper tubes as the core heat exchange elements. The heat transfer efficiency of copper tubes is limited. Especially at positions far from the center of the copper tube, heat transfer is blocked, and even heat exchange dead zones may be formed, which not only weakens the overall thermal efficiency but also leads to uneven heat energy distribution. Therefore, there is an urgent need for a heat storage and heat exchange structure that can improve heat transfer efficiency and the uniformity of heat energy distribution. Summary of the Utility Model

[0003] This application provides a finned tube heat exchanger and a heating and ventilation system to solve the problems of uneven heat energy distribution and low heat transfer efficiency in phase change heat storage and heat exchange devices.

[0004] In a first aspect, an embodiment of this application provides a finned tube heat exchanger. The finned tube heat exchanger includes honeycomb fins, a heat exchange tube group, and a phase change material. A plurality of heat conduction spaces extending in a first direction are provided inside the honeycomb fins, and the plurality of heat conduction spaces are arranged at intervals; the heat exchange tube group includes a heat storage tube and a heat release tube. Both the heat storage tube and the heat release tube have a plurality of straight pipe segments arranged in a second direction, and the straight pipe segments extend in the first direction. Each straight pipe segment penetrates through a corresponding heat conduction space, wherein the first direction intersects with the second direction; the phase change material is filled in the gaps between the honeycomb fins and the heat storage tube, and between the honeycomb fins and the heat release tube.

[0005] Further, the number of both the heat storage tubes and the heat release tubes is a plurality, and the plurality of heat storage tubes and the plurality of heat release tubes are arranged periodically in a third direction; wherein, the first direction, the second direction, and the third direction are perpendicular to each other pairwise.

[0006] Further, along the third direction, at least one heat conduction space is provided between any adjacent one heat storage tube and one heat exchange tube, and the heat conduction space is filled with the phase change material.

[0007] Further, the heat exchange tube group further includes a heat storage water inlet pipe and a heat storage water outlet pipe. The heat storage water inlet pipe is communicated with the inlets of a plurality of the heat storage tubes, and the heat storage water outlet pipe is communicated with the outlets of a plurality of the heat storage tubes. The heat exchange tube group further includes a heat release water inlet pipe and a heat release water outlet pipe. The heat release water inlet pipe is communicated with the inlets of a plurality of the heat release tubes, and the heat release water outlet pipe is communicated with the outlets of a plurality of the heat release tubes. Wherein, the heat storage water inlet pipe, the heat storage water outlet pipe, the heat release water inlet pipe, and the heat release water outlet pipe are located on the same side of the honeycomb fins along the first direction.

[0008] Further, the heat storage water inlet pipe includes a first header pipe and a first water inlet connecting pipe connected to the first header pipe. The first header pipe is communicated with the inlets of a plurality of the heat storage tubes. The heat storage water outlet pipe includes a second header pipe and a first water outlet connecting pipe connected to the second header pipe. The second header pipe is communicated with the outlets of a plurality of the heat storage tubes. The heat release water inlet pipe includes a third header pipe and a second water inlet connecting pipe connected to the third header pipe. The third header pipe is communicated with the inlets of a plurality of the heat release tubes. The heat release water outlet pipe includes a fourth header pipe and a second water outlet connecting pipe connected to the fourth header pipe. The fourth header pipe is communicated with the outlets of a plurality of the heat release tubes.

[0009] Further, the first header pipe, the second header pipe, the third header pipe, and the fourth header pipe extend along the third direction.

[0010] Further, at least part of the side wall of the straight pipe section is attached to and connected with the honeycomb fins.

[0011] Further, the material of the honeycomb fins includes at least one of copper, aluminum, silicon dioxide, and expanded graphite three-dimensional foam.

[0012] Further, the heat exchange tube group satisfies one of the following conditions: (1) The material of the heat exchange tube group is at least one of copper, copper alloy, and stainless steel; (2) In the heat exchange tube group, the materials of the heat storage tubes and the heat release tubes are copper, and the materials of other pipes are stainless steel.

[0013] Further, the tube-fin heat exchanger further includes a housing, and the housing includes: a first housing having an installation space inside, the honeycomb fins are installed in the installation space, and the phase change material is filled in the installation space; a second housing disposed outside the first housing; and a heat insulation layer disposed between the first housing and the second housing.

[0014] Furthermore, the first housing includes a housing body, a first top plate and a first bottom plate oppositely arranged in a first direction, and the housing body has a cylindrical structure; in the first direction, one end of the housing body is connected to the first top plate, and the other end is connected to the first bottom plate, and the first top plate, the housing body and the first bottom plate jointly enclose and define the installation space.

[0015] Furthermore, the heat exchange tube group further includes a first water inlet pipe, a first water outlet pipe, a second water inlet pipe and a second water outlet pipe extending in the first direction; the first top plate has a plurality of first through holes, wherein the heat storage tube and the heat release tube are arranged in the installation space, and the first water inlet pipe, the first water outlet pipe, the second water inlet pipe and the second water outlet pipe respectively penetrate through a plurality of the first through holes.

[0016] Furthermore, the finned tube heat exchanger further includes: a first mounting member connected to the honeycomb fin, and the first mounting member has a first limiting groove; a second mounting member connected to the first mounting member, and the second mounting member has a second limiting groove, the second limiting groove is arranged corresponding to the first limiting groove, and part of the pipes in the heat exchange tube group are clamped in the first limiting groove.

[0017] Furthermore, the second mounting member further has a first mounting flange; the finned tube heat exchanger further includes a third mounting member, the third mounting member includes a mounting plate and a second mounting flange, the mounting plate is connected to the inner wall surface of the housing body, the second mounting flange is connected to the mounting plate, and the first mounting flange is mounted on the second mounting flange.

[0018] Furthermore, the first housing further includes a rib plate, and the rib plate includes: a first rib plate connected to the outer wall surface of the housing body and extending along the circumferential direction of the housing body; and a second rib plate connected to opposite sides of the first rib plate in the first direction, and the second rib plate is connected to the first rib plate at an angle.

[0019] Furthermore, the second housing includes: a plurality of side plates surrounding the periphery of the housing body; a second top plate arranged above the first top plate and connected to the upper ends of the plurality of side plates; and a second bottom plate arranged below the second bottom plate and connected to the lower ends of the plurality of side plates.

[0020] Further, the side plate has a plate body. Two adjacent side plates are bolted together. Among two adjacent side plates, one side plate further includes a third mounting flange connected to its plate body at an angle. The third mounting flange is provided with a mounting hole so that the third mounting flange is mounted on the outer wall surface of the plate body of the other side plate. The other side plate further includes a fourth mounting flange connected to its plate body. The fourth mounting flange has an avoidance portion. The avoidance portion is parallel and spaced apart from the plate body of the other side plate and is arranged corresponding to the mounting hole of the third mounting flange.

[0021] Further, the heat insulation layer includes: a first heat insulation layer connected to the outer wall surface of the first housing; and a second heat insulation layer connected to the side of the first heat insulation layer away from the first housing. Wherein, the hardness of the second heat insulation layer is greater than that of the first heat insulation layer, and the heat insulation coefficient of the second heat insulation layer is greater than that of the first heat insulation layer.

[0022] Further, the second housing includes a plurality of side plates. Two adjacent side plates are connected and a corner is formed at the connection part between the two. The second heat insulation layer is provided with an avoidance groove corresponding to the corner. The avoidance groove extends along the first direction and forms an avoidance space with the corner.

[0023] Further, the housing further includes: a positioning member arranged on the side of the side plate facing the housing body. The positioning member is connected to the side plate and forms a clamping groove between the positioning member and the side plate; a fourth mounting member, one end of which is mounted on the outer wall surface of the first top plate, and the other end of which is clamped in the clamping groove and connected to the side plate.

[0024] Further, the housing further includes a first support member. The first support member includes: a first support portion parallel to the plate surface of the first bottom plate and mounted on the outer wall surface of the first bottom plate. The first support portion extends along the third direction; two second support portions respectively connected to opposite sides of the first support portion along the third direction. The second support portions are connected to the first support portion at an angle; and two third support portions respectively connected to the sides of the two second support portions away from the first support portion. The third support portions are parallel to the plate surface of the second bottom plate and are used for mounting on the inner wall surface of the second bottom plate. Wherein, the third direction, the first direction, and the second direction are perpendicular to each other in pairs.

[0025] Further, the housing further includes a second support member, and the second support member includes: a fourth support portion, parallel to the plate surface of the second bottom plate and mounted on the outer wall surface of the second bottom plate, the fourth support portion extending along a third direction; a fifth support portion, angularly connected to one side of the fourth support portion along the second direction; and a sixth support portion, connected to a side of the fifth support portion away from the fourth support portion, the sixth support portion extending along the third direction and being arranged parallel and spaced apart from the fourth support portion, wherein the third direction, the first direction, and the second direction are perpendicular to each other in pairs.

[0026] In a second aspect, an embodiment of the present application further provides a heating, ventilation and air conditioning (HVAC) system, including: a heat source module; the finned tube heat exchanger as described above, the heat source module being connected to the finned tube heat exchanger; and a water using module, connected to the finned tube heat exchanger.

[0027] Further, it further includes: a heating module, connected to the heat source module through a heat transfer pipeline.

[0028] Further, the HVAC system has a first working mode and a second working mode; in the first working mode of the HVAC system, the heat source module is communicated with the finned tube heat exchanger to provide heat for the water using module; in the second working mode of the HVAC system, the heat source module is communicated with the heating module to provide heat for the heating module.

[0029] Based on the finned tube heat exchanger and the HVAC system in the embodiments of the present application, the straight pipe sections in the heat storage pipe and the heat release pipe are passed through the heat conduction space of the honeycomb fins, so that heat can be transferred from the heat storage pipe to the phase change material more efficiently and from the phase change material to the heat release pipe more efficiently, effectively reducing the resistance of heat transfer and helping to improve the heat transfer efficiency. The honeycomb structure enables heat to be evenly dispersed inside the honeycomb fins, avoiding heat transfer dead zones caused by the layout limitation of copper pipes and optimizing the uniformity of the internal heat energy distribution of the heat exchanger. In the present application, honeycomb fins with a large specific surface area are used, increasing the contact area between the fins and the phase change material, and the heat conduction space formed inside the honeycomb fins is also used to fill the phase change material. Thus, on the premise of not sacrificing the filling amount of the phase change material, the effective increase of the heat exchange area is realized, and then the same heat exchange effect can be achieved with fewer heat storage pipes and heat release pipes, reducing the material cost. Description of the Drawings

[0030] Figure 1 is a schematic structural diagram of a finned tube heat exchanger according to an embodiment of the present application;

[0031] Figure 2 is a schematic cross-sectional view of a finned tube heat exchanger along A-A according to an embodiment of the present application;

[0032] Figure 3 Schematic diagram of the structure of a honeycomb fin and a heat exchange tube group according to an embodiment of the present application;

[0033] Figure 4 Schematic diagram of the structure of a heat exchange tube according to an embodiment of the present application;

[0034] Figure 5 Top view schematic diagram of a honeycomb fin and a heat exchange tube group according to an embodiment of the present application;

[0035] Figure 6 Schematic diagram of a curve showing the relationship between the temperature inside a copper tube heat exchanger and the distance to the central axis of the heat storage tube;

[0036] Figure 7 Schematic diagram of a curve showing the relationship between the temperature inside a finned tube heat exchanger and the distance to the central axis of the heat storage tube according to an embodiment of the present application;

[0037] Figure 8 Schematic diagram of the temperature distribution near the heat storage tube inside a copper tube heat exchanger;

[0038] Figure 9 Schematic diagram of the temperature distribution near the heat storage tube inside a finned tube heat exchanger according to an embodiment of the present application;

[0039] Figure 10 Schematic diagram of the temperature distribution inside a copper tube heat exchanger and a finned tube heat exchanger;

[0040] Figure 11 Temperature change curve diagram of each temperature measurement point during the heat storage process of a copper tube heat exchanger and a finned tube heat exchanger;

[0041] Figure 12 Temperature change curve diagram of each temperature measurement point during the heat release process of a copper tube heat exchanger and a finned tube heat exchanger;

[0042] Figure 13 Perspective structure schematic diagram of a finned tube heat exchanger according to an embodiment of the present application;

[0043] Figure 14 Schematic diagram of the structure of a first housing according to an embodiment of the present application;

[0044] Figure 15 Exploded structure schematic diagram of a first housing according to an embodiment of the present application;

[0045] Figure 16 For Figure 2 Local enlarged schematic diagram at position D in

[0046] Figure 17 Schematic diagram of the structure of a first mounting member and a second mounting member according to an embodiment of the present application;

[0047] Figure 18 For Figure 15 The partial enlarged schematic view at position E in

[0048] Figure 19 The exploded structural schematic view of a second housing according to an embodiment of the present application;

[0049] Figure 20 The structural schematic view of an avoidance part according to an embodiment of the present application;

[0050] Figure 21 For Figure 19 The partial enlarged schematic view at position F in

[0051] Figure 22 For Figure 2 The partial enlarged schematic view at position G in

[0052] Figure 23 For Figure 2 The partial enlarged schematic view at position H in

[0053] Figure 24 The exploded structural schematic view of a heat insulation layer according to an embodiment of the present application;

[0054] Reference numerals:

[0055] 1, finned tube heat exchanger;

[0056] 10, housing; 20, honeycomb fins; 30, heat exchange tube group; 40, phase change material;

[0057] 11, first housing; 12, second housing; 13, heat insulation layer; 21, sub-fin unit; 31, heat storage tube; 32, heat release tube; 33, heat storage inlet pipe; 34, heat storage outlet pipe; 35, heat release inlet pipe; 36, heat release outlet pipe; 51, first mounting member; 52, second mounting member; 53, third mounting member; 54, fourth mounting member; 55, first support member; 56, positioning member; 57, second support member;

[0058] 110. Installation space; 111. Housing body; 112. First top plate; 113. First bottom plate; 114. Rib plate; 121. Second top plate; 122. Second bottom plate; 123. Side plate; 131. First thermal insulation layer; 132. Second thermal insulation layer; 210. Heat conduction space; 301. Straight pipe section; 302. Elbow pipe section; 331. First manifold; 332. First water inlet connection pipe; 341. Second manifold; 342. First water outlet connection pipe; 351. Third manifold; 352. Second water inlet connection pipe; 361. Fourth manifold; 362. Second water outlet connection pipe; 511. First connection part; 512. First limiting part; 521. Second limiting part; 522. First installation flange; 531. Installation plate; 532. Second installation flange; 551. First supporting part; 552. Second supporting part; 553. Third supporting part; 571. Fourth supporting part; 572. Fifth supporting part; 573. Sixth supporting part;

[0059] 1141. First rib plate; 1142. Second rib plate; 1231. Plate body; 1232. Third installation flange; 1233. Fourth installation flange; 1234. Avoidance part; 1320. Avoidance groove;

[0060] X. First direction; Y. Second direction; Z. Third direction. Detailed implementation manners

[0061] The principles and features of the present utility model will be described below with reference to the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0062] In a phase change heat storage and heat exchange device, a copper tube heat exchanger is provided with copper tubes arranged at intervals, and a phase change material is filled between the copper tubes to achieve heat storage and heat exchange through the heat exchange between the copper tubes and the phase change material. In the copper tube heat exchanger, heat diffuses from the copper tube connected to the heat source to the surroundings. After the phase change material absorbs heat, it changes from a solid phase to a liquid phase. This heat transfer method has a small heat transfer radius and low heat transfer efficiency. The heat is concentrated inside and on the surface of the copper tube connected to the heat source and cannot be effectively transferred to positions far from the copper tube. The temperature at these positions is low or even unable to cause the solid-liquid transformation of the phase change material, thereby forming a heat exchange dead zone. This not only reduces the heat transfer efficiency but also causes uneven distribution of thermal energy inside the device.

[0063] In the related art, an attempt is made to increase the arrangement density of the copper tubes, that is, to reduce the distance between adjacent copper tubes, in order to reduce the heat exchange dead zone by expanding the heat exchange area. This method not only increases the material cost but also reduces the filling amount of the phase change material per unit volume. On the premise that the size of the phase change heat storage and heat exchange device remains unchanged, its total heat storage capacity is greatly reduced, which is contrary to the original intention of improving energy efficiency.

[0064] Based on the above problems, an embodiment of the present application provides a finned tube heat exchanger and a heating and ventilation system, including honeycomb fins. Multiple heat conduction spaces are formed inside the honeycomb fins, and multiple straight pipe segments in the heat storage pipe and the heat release pipe are arranged through the heat conduction spaces. Among them, the honeycomb fins have the advantage of high thermal conductivity, enabling heat to be transferred from the heat storage pipe to the phase change material more efficiently through the honeycomb fins, and from the phase change material to the heat release pipe more efficiently through the honeycomb fins, reducing the resistance of heat transfer and improving the heat transfer efficiency during the heat storage and heat release processes. The honeycomb structure enables heat to be evenly dispersed inside the honeycomb fins, avoiding heat transfer dead zones caused by the layout limitation of copper pipes, and optimizing the uniformity of the internal thermal energy distribution of the finned tube heat exchanger. Compared with the scheme of densely arranged copper pipes, the contact area between the honeycomb fins and the phase change material in the present application is large, and the heat conduction spaces inside the honeycomb fins can be filled with the phase change material, realizing an effective increase in the heat transfer area without sacrificing the filling amount of the phase change material (i.e., without reducing the total heat storage capacity of the heat exchanger), and even achieving the same heat transfer effect with fewer heat storage pipes and heat release pipes.

[0065] Please refer to Figures 1 - 3 , Figure 1 which is a schematic structural diagram of a finned tube heat exchanger 1 according to an embodiment of the present application, Figure 2 and which is a schematic cross-sectional view of the finned tube heat exchanger 1 along A-A according to an embodiment of the present application, Figure 3 which is a schematic structural diagram of a honeycomb fin 20 and a heat exchange tube group 30 according to an embodiment of the present application. The finned tube heat exchanger 1 includes a housing 10, a honeycomb fin 20, a heat exchange tube group 30, and a phase change material 40. The housing 10 has an internal space, the honeycomb fin 20 and the heat exchange tube group 30 are arranged in the internal space of the housing 10, and the phase change material 40 is filled between the honeycomb fin 20 and the heat exchange tube group 30.

[0066] In an embodiment of the present application, the honeycomb fin 20 includes a plurality of sub-fin units 21 connected in series. Each sub-fin unit 21 is adjacent to a plurality of surrounding sub-fin units 21, and two adjacent sub-fin units 21 share a side wall. Heat can be quickly transferred to the adjacent sub-fin unit 21 through the shared side wall, with high heat conduction efficiency. A plurality of sub-fin units 21 in the honeycomb fin 20 form an orderly heat conduction network, which helps to achieve uniform distribution and rapid transfer of heat, and has a larger heat transfer radius. Among them, each sub-fin unit 21 has a honeycomb straight through hole, and each honeycomb straight through hole extends along the first direction X and forms a heat conduction space 210. In this way, a plurality of spaced-apart heat conduction spaces 210 are formed inside the honeycomb fin 20. Compared with flat fins, the honeycomb fin 20 has a large porosity, small flow resistance to the liquid phase change material, and increases the convective heat transfer coefficient of the phase change material 40.

[0067] Further, a person skilled in the art can adjust the pore size of the honeycomb straight through holes according to the heat exchange requirements to match the heat exchange power of the tube-fin heat exchanger 1. The honeycomb straight through holes can be hexagonal through holes, or can be flexibly adjusted according to actual requirements. For example, the honeycomb straight through holes can also be pentagonal through holes, circular through holes or other geometric shapes to match the fluidity of the phase change material 40. Specifically, when the honeycomb straight through holes are circular through holes, a part of the side walls of two adjacent sub-fin units 21 are connected, and there are gaps between multiple adjacent sub-fin units 21, and the phase change material 40 can also be filled in the gaps.

[0068] The honeycomb fins 20 are made of a material with high thermal conductivity to quickly transfer heat. Exemplarily, the material of the honeycomb fins 20 includes at least one of copper, aluminum, silicon dioxide, and expanded graphite three-dimensional foam.

[0069] In the embodiment of the present application, the heat exchange tube group 30 includes heat exchange tubes. Please refer to Figure 4 , Figure 4 , which is a schematic structural diagram of a heat exchange tube according to an embodiment of the present application. The heat exchange tube has a plurality of straight tube segments 301 arranged at intervals along the second direction Y, and the straight tube segments 301 extend along the first direction X. The heat exchange tube further includes a bent tube segment 302, and the bent tube segment 302 is arranged on opposite sides of the straight tube segment 301 along the first direction X and is connected between two adjacent straight tube segments 301. The plurality of straight tube segments 301 and the plurality of bent tube segments 302 are sequentially connected to form the heat exchange tube. In the embodiment of the present application, each straight tube segment 301 in the heat exchange tube extends along the first direction X and correspondingly penetrates through a heat conduction space 210, so that the heat exchange tube is connected to the sub-fin unit 21 with a large contact area. Wherein, the first direction X intersects with the second direction Y.

[0070] After the straight tube segments 301 of the heat exchange tube are installed in the honeycomb straight through holes, each straight tube segment 301 is fixed in the corresponding sub-fin unit 21 through an expansion joint process. In this way, each straight tube segment 301 penetrates through a heat conduction space 210, and the side walls of each straight tube segment 301 are in close contact with the corresponding sub-fin unit 21, thereby reducing the interfacial thermal resistance between the heat exchange tube and the sub-fin unit 21. In a specific implementation, the straight tube is bent into a U-shaped tube. Wherein, the outer diameter of the U-shaped tube is slightly smaller than the aperture of the honeycomb straight through hole. A plurality of U-shaped tubes are installed in the honeycomb straight through holes of the honeycomb fins 20 at intervals along the second direction Y, and the U-shaped tubes are expanded through an expansion tube process to fix the U-shaped tubes to the honeycomb fins 20, and then the straight ends of the plurality of U-shaped tubes are bent and welded so that the plurality of U-shaped tubes are connected and form the above-mentioned heat exchange tube.

[0071] The heat exchange tubes are divided into heat storage tubes 31 and heat release tubes 32. Each straight tube section 301 in the heat storage tubes 31 and the heat release tubes 32 is disposed in a corresponding heat conduction space 210. The phase change material 40 is filled in the gap between the honeycomb fins 20 and the heat storage tubes 31, and the phase change material 40 is filled in the gap between the honeycomb fins 20 and the heat release tubes 32. Thus, the heat inside the heat storage tubes 31 is transferred to the corresponding sub-fin units 21 of the heat conduction space 210 through the wall surfaces of the plurality of straight tube sections 301, and radiated to the surrounding sub-fin units 21, so that the phase change material 40 absorbs heat to complete the solid-liquid conversion for heat storage; the sub-fin units 21 and the phase change material 40 can transfer the heat to the plurality of straight tube sections 301 of the heat release tubes 32, so that the temperature of the fluid inside the heat release tubes 32 rises.

[0072] As Figure 5 shown, Figure 5 FIG. is a top view schematic diagram of a honeycomb fin 20 and a heat exchange tube group 30 according to an embodiment of the present application. In the embodiment of the present application, in order to reduce the loss of heat during the transfer process and improve the thermal efficiency of the tube-fin heat exchanger 1, the heat storage tubes 31 and the heat release tubes 32 are alternately arranged. Specifically, the number of the heat storage tubes 31 and the heat release tubes 32 is both plural, and the plural heat storage tubes 31 and the plural heat release tubes 32 are periodically arranged along the third direction Z. The periodic arrangement helps to achieve uniform distribution and stable release of heat, and avoid the occurrence of local overheating or overcooling phenomena. Optionally, the first direction X, the second direction Y, and the third direction Z are perpendicular to each other in pairs.

[0073] In an embodiment of the present application, along the third direction Z, there is at least one heat conduction space 210 between any adjacent one heat storage tube 31 and one heat release tube 32, and the heat conduction space 210 is filled with the phase change material 40. The heat conduction space 210 is provided between the heat storage tubes 31 and the heat release tubes 32 to maintain a necessary space for facilitating heat transfer and management. The heat transfer path of heat storage and heat release of the phase change material 40 in the heat conduction space 210 is short, realizing efficient heat transfer and exchange. It can be understood that in the embodiment of the present application, a part of the heat conduction space 210 is only filled with the phase change material 40, and a straight tube section 301 is provided in another part of the heat conduction space 210, and the gap between the straight tube section 301 and the sub-fin unit 21 is filled with the phase change material 40. The high void structure of the honeycomb fins 20 can ensure the filling amount of the phase change material 40 of the tube-fin heat exchanger 1, that is, ensure that the tube-fin heat exchanger 1 can maintain a relatively high total heat storage capacity. At the same time, the specific surface area of the honeycomb fins 20 is large, and the phase change material 40 contacts the side wall of the sub-fin unit 21, and the heat exchange area is large.

[0074] In the embodiment of the present application, the heat exchange tube group 30 further includes a heat storage water inlet pipe 33, a heat storage water outlet pipe 34, a heat release water inlet pipe 35, and a heat release water outlet pipe 36. Among them, the heat storage water inlet pipe 33, multiple heat storage tubes 31, and the heat storage water outlet pipe 34 are connected in sequence to define a heat storage flow path, and the heat storage flow path is connected to a heat pump. The heat pump transports a high-temperature heat exchange medium to the heat storage flow path to cause the phase change material 40 to undergo a phase change to absorb and store heat, realizing the heat storage of the finned tube heat exchanger 1; the heat release water inlet pipe 35, multiple heat release tubes 32, and the heat release water outlet pipe 36 are connected in sequence to define a heat release flow path, and the heat release flow path is connected to a municipal water path. The cold water in the municipal water path absorbs the heat from the phase change material 40 after flowing through the heat release flow path, and the phase change material 40 undergoes an inverse phase change and releases heat, realizing the heat release of the finned tube heat exchanger 1.

[0075] The heat storage water inlet pipe 33 is connected to the inlets of multiple heat storage tubes 31, and the heat storage water outlet pipe 34 is connected to the outlets of multiple heat storage tubes 31. The heat exchange tube group 30 further includes a heat release water inlet pipe 35 and a heat release water outlet pipe 36. The heat release water inlet pipe 35 is connected to the inlets of multiple heat release tubes 32, and the heat release water outlet pipe 36 is connected to the outlets of multiple heat release tubes 32. In the embodiment of the present application, the heat storage water inlet pipe 33, the heat storage water outlet pipe 34, the heat release water inlet pipe 35, and the heat release water outlet pipe 36 are located on the same side of the honeycomb fins 20 along the first direction X. On the one hand, the straight pipe sections 301 in the heat storage tubes 31 and the heat release tubes 32 all extend along the first direction X and are arranged inside the honeycomb fins 20. The inlet pipes and outlet pipes in the heat exchange tube group 30 are located on one side of the honeycomb fins 20 along the first direction X, which is beneficial to simplifying the layout of the heat exchange tube group 30, reducing the lengths of the inlet pipes and outlet pipes, and is beneficial for improving the thermal efficiency, reducing the material cost, and reducing the fluid resistance. On the other hand, the inlet pipes and outlet pipes are located on the same side of the honeycomb fins 20, reducing the difficulty of installation and maintenance. Optionally, the first direction X is the vertical direction, and the heat storage water inlet pipe 33, the heat storage water outlet pipe 34, the heat release water inlet pipe 35, and the heat release water outlet pipe 36 are located above the honeycomb fins 20 along the vertical direction, facilitating installation by installers.

[0076] In the embodiment of the present application, the heat exchange tube group 30 includes a plurality of heat storage tubes 31 and a plurality of heat release tubes 32. Therefore, a header is provided in the water inlet pipes of the plurality of heat storage tubes 31 and the plurality of heat release tubes 32 to evenly distribute the fluid of the previous-stage system into each heat storage tube 31 or each heat release tube 32. Similarly, a header is provided in the water outlet pipes of the plurality of heat storage tubes 31 and the plurality of heat release tubes 32 to collect the fluid in each heat storage tube 31 or each heat release tube 32. Specifically, the heat storage water inlet pipe 33 includes a first header 331 and a first water inlet connecting pipe 332. The first header 331 is communicated with the water inlets of the plurality of heat storage tubes 31, and the first water inlet connecting pipe 332 is connected to the first header 331. The heat storage water outlet pipe 34 includes a second header 341 and a first water outlet connecting pipe 342. The second header 341 is communicated with the water outlets of the plurality of heat storage tubes 31, and the first water outlet connecting pipe 342 is connected to the first header 331. Similarly, the heat release water inlet pipe 35 includes a third header 351 and a second water inlet connecting pipe 352. The third header 351 is communicated with the water inlets of the plurality of heat release tubes 32, and the second water inlet connecting pipe 352 is connected to the third header 351. The heat release water outlet pipe 36 includes a fourth header 361 and a second water outlet connecting pipe 362. The fourth header 361 is communicated with the water outlets of the plurality of heat release tubes 32, and the second water outlet connecting pipe 362 is connected to the fourth header 361.

[0077] It can be understood that the plurality of heat storage tubes 31 and the plurality of heat release tubes 32 are periodically arranged along the third direction Z. Therefore, the first header 331, the second header 341, the third header 351, and the fourth header 361 all extend along the third direction Z to ensure that the fluid in the plurality of heat storage tubes 31 and the plurality of heat release tubes 32 can flow out or flow into the above-mentioned headers smoothly. Further, the first water inlet connecting pipe 332, the first water outlet connecting pipe 342, the second water inlet connecting pipe 352, and the second water outlet connecting pipe 362 extend along the first direction.

[0078] It should be noted that during the heat storage process, the temperature of the fluid in the heat storage flow path gradually decreases along the flow direction, and during the heat release process, the temperature of the fluid in the heat release flow path gradually increases along the flow direction. In the heat exchange tube group 30, the heat storage water inlet pipe 33 and the heat storage water outlet pipe 34 are oppositely arranged along the second direction Y, and the heat release water inlet pipe 35 and the heat release water outlet pipe 36 are oppositely arranged along the second direction Y. To ensure the consistency of the temperature change trend in the finned tube heat exchanger 1, along the second direction Y, the heat storage water inlet pipe 33 and the heat release water outlet pipe 36 are located on the same side, and the heat storage water inlet pipe 33 is located on the relatively outer side of the heat release water outlet pipe 36. The heat storage water outlet pipe 34 and the heat release water inlet pipe 35 are located on the same side, and the heat release water inlet pipe 35 is located on the relatively outer side of the heat storage water outlet pipe 34.

[0079] In an embodiment of the present application, the heat exchange tube group 30 is made of at least one of copper, copper alloy, and stainless steel. Using the same material can ensure the performance consistency of the heat exchange tube group 30, and the same material can also reduce the process difficulties such as welding and connection between pipelines.

[0080] In another embodiment of the present application, the heat exchange between the heat exchange tube group 30 and the phase change material 40 is mainly completed through the heat storage tubes 31 and the heat release tubes 32. In order to transfer heat more effectively and improve the heat exchange efficiency, the heat storage tubes 31 and the heat release tubes 32 are made of copper, and the materials of other pipelines are stainless steel. For example, pipelines such as the water inlet pipe and the water outlet pipe use stainless steel. Stainless steel has excellent corrosion resistance and durability and can withstand high working pressures and temperature changes.

[0081] In a certain copper tube heat exchanger I, the internal pipeline adopts the structure of the above-mentioned heat exchange tube group 30. Among them, the radius of the heat storage tube is taken as R, and a high-temperature heat exchange medium with a temperature of T is continuously pumped into each heat storage tube through a heat source. After the temperature field inside the copper tube heat exchanger I is stable, for a certain heat storage tube I1, at a position where the distance from the central axis of the heat storage tube I1 in the copper tube heat exchanger I is L1, its temperature is T1. The relationship between the temperature T1 and the distance L1 from the central axis of the heat storage tube I1 is as Figure 6 shown. In a finned tube heat exchanger II in an embodiment of the present application, the internal pipeline is the same as that of the above-mentioned copper tube heat exchanger I. The radius of the heat storage tube is taken as R, and a high-temperature heat exchange medium with a temperature of T is continuously pumped into each heat storage tube through a heat source. After the temperature field inside the finned tube heat exchanger II is stable, for the heat storage tube I2 located at the same position as the heat storage tube I1, at a position where the distance from the central axis of the heat storage tube I2 in the finned tube heat exchanger II is L2, its temperature is T2. The relationship between the temperature T2 and the distance L2 from the central axis of the heat storage tube I2 is as Figure 7 shown.

[0082] Please refer to Figure 6 and Figure 8 , Figure 8 is a schematic diagram of the temperature distribution of the heat storage tube I1. When L1 > R, as L1 increases, T1 drops rapidly. It can be seen that the heat in the heat storage tube I1 in the copper tube heat exchanger I cannot be effectively transferred to the nearby phase change material, resulting in an obvious temperature gradient inside and outside the heat storage tube I1. This also shows that the heat exchange radius of the heat storage tube in the copper tube heat exchanger I is significantly smaller. Please refer to Figure 7 and Figure 9 , Figure 9 is a schematic diagram of the temperature distribution of the heat storage tube I1. When L2 > R, as L2 increases, T2 drops slowly. It can be seen that due to the honeycomb fins 20 in the finned tube heat exchanger II, the thermal resistance between the heat storage tube I2, the sub-fin units 21 and the phase change material 40 is small, and the heat exchange efficiency is high. Further, as Figure 10 shown, Figure 10It is a schematic diagram of the temperature distribution in the copper tube heat exchanger I and the finned tube heat exchanger II. The heat transfer radius of the heat storage tube in the finned tube heat exchanger II is large, and the heat can be transferred to a farther position, and its internal average temperature is significantly higher than that of the copper tube heat exchanger I.

[0083] In the above-mentioned copper tube heat exchanger I, three temperature measurement points A1, A2, and A3 are set. Along the first direction X, A1, A2, and A3 are on the same horizontal plane, and along the second direction X, A1, A2, and A3 are arranged at intervals in sequence. In the above-mentioned finned tube heat exchanger II, a temperature measurement point B1 is set at the same position as the temperature measurement point A1, a temperature measurement point B2 is set at the same position as the temperature measurement point A2, and a temperature measurement point B3 is set at the same position as the temperature measurement point A3.

[0084] The high-temperature heat exchange medium is pumped into the copper tube heat exchanger I and the finned tube heat exchanger II through a heat source. The temperature change curves of the temperature measurement points A1, A2, A3 and B1, B2, B3 during the heat storage process are as Figure 11 shown. A temperature measurement point C1 is set on the second outlet pipe 362 of the copper tube heat exchanger I, and a temperature measurement point C2 is set on the second outlet pipe 362 of the finned tube heat exchanger II to detect the outlet water temperature. Further, cold water is pumped into the copper tube heat exchanger I and the finned tube heat exchanger II through the municipal pipeline. The temperature change curves of the temperature measurement points A1, A2, A3, B1, B2, B3, C1, and C2 during the heat release process are as Figure 12 shown. By comparing the temperature change curves of the temperature measurement points at the same position (A1 and B1, A2 and B2, A3 and B3), compared with the copper tube heat exchanger I, the phase change conversion time during the heat storage process and the reverse phase change conversion time during the heat release process in the finned tube heat exchanger II are short, and it has the advantage of high heat exchange efficiency, and can store and release heat more quickly and effectively.

[0085] Next, the housing 10 of the finned tube heat exchanger 1 in the embodiment of the present application will be introduced in detail with reference to the accompanying drawings.

[0086] Please continue to refer to Figures 1 - 2 , the housing 10 includes a first housing 11, a second housing 12 and a heat insulation layer 13. The first housing 11 has an installation space 110 inside. The honeycomb fins 20 are installed in the installation space 110, and the phase change material 40 is filled in the installation space 110. Among them, at least part of the heat exchange tube group 30 is arranged in the installation space and immersed in the phase change material 40. The heat insulation layer 13 is arranged between the first housing 11 and the second housing 12.

[0087] Please refer to Figures 13 - 15 , Figure 13 It is a perspective structure schematic diagram of a finned tube heat exchanger 1 according to an embodiment of the present application, Figure 14 It is a structure schematic diagram of a first housing 11 according to an embodiment of the present application, Figure 15Explosion structure schematic diagram of a first housing 11 according to an embodiment of the present application. The first housing 11 includes a housing body 111, a first top plate 112, and a first bottom plate 113. Among them, the housing body 111 has a cylindrical structure. The first top plate 112 and the first bottom plate 113 are oppositely arranged along the first direction X. The first top plate 112 is connected to the upper end of the housing body 111 along the first direction X, and the first bottom plate 113 is connected to the lower end of the housing body 111 along the first direction X. The first top plate 112, the housing body 111, and the first bottom plate 113 are sequentially connected and enclose to define an installation space 110.

[0088] In a specific implementation, the first top plate 112 includes a top plate body and a plurality of first top plate flanges connected to the edge of the top plate body. The first bottom plate 113 includes a bottom plate body and a plurality of first bottom plate flanges connected to the edge of the bottom plate body. The plurality of first top plate flanges and the plurality of first bottom plate flanges are both connected to the housing body 111 by bolts. Optionally, in the scenario of long-distance transportation, the plurality of first top plate flanges and the plurality of first bottom plate flanges can be connected to the housing body 111 by welding, so that the first top plate 112, the housing body 111, and the first bottom plate 113 form a firm whole, thereby effectively resisting various impacts, vibrations, and stresses that may be encountered during transportation.

[0089] In practical applications, during the long-distance transportation of the finned tube heat exchanger 1, especially during container transportation, it is very likely to face a high-temperature environment, causing the phase change material 40 inside the first housing 11 to undergo a phase change, and then causing the first housing 11 to deform under the action of the liquid phase change material 40. Optionally, the first housing 11 can be made of a metal material, such as stainless steel, to avoid being damaged by force or heat in the scenario of long-distance transportation.

[0090] Please refer to Figure 16 , Figure 16 is Figure 2 The partial enlarged schematic diagram at D in. To improve the circumferential expansion of the housing body 111 caused by heat or force in a high-temperature environment, a rib plate 114 is provided along the circumferential direction of the housing body 111 in the first housing 11. The rib plate 114 includes a first rib plate 1141 and a second rib plate 1142. The first rib plate 1141 extends along the circumferential direction of the housing body 111 and is disposed around the outer wall surface of the housing body 111. The two second rib plates 1142 are connected to the opposite sides of the first rib plate 1141 along the first direction X at an angle. In this way, the rib plate 114 can withstand forces from different directions and resist external pressures and vibrations from all directions.

[0091] Please refer to Figure 17 and Figure 18 , Figure 17 Structural schematic diagram of a first mounting member 51 and a second mounting member 52 according to an embodiment of the present application. Figure 18For Figure 16 It is a partially enlarged schematic view at position E in the figure. In the embodiment of the present application, the relative positions of the heat exchange tube group 30 and the honeycomb fin 20 are fixed through the cooperative action of the first mounting member 51 and the second mounting member 52, and then the honeycomb fin 20 is installed in the first housing 11 through the third mounting member 53.

[0092] Specifically, the heat exchange tube group 30 includes a plurality of header pipes disposed above the honeycomb fin 20. The plurality of header pipes extend along the third direction Z and are spaced apart along the second direction Y. The first mounting member 51 is in the shape of a plate and includes a first connecting portion 511 and a first limiting portion 512 extending upward from the first connecting portion 511. The first limiting portion 512 has a plurality of first limiting grooves spaced apart along the second direction Y. The second mounting member 52 includes a second limiting portion 521, and the second limiting portion 521 has a plurality of second limiting grooves spaced apart along the second direction Y. Among them, the first connecting portion 511 is connected to the side surface of the honeycomb fin 20 along the third direction, and the plurality of first limiting grooves are respectively abutted against the lower sides of the plurality of header pipes. The second limiting portion 521 is connected to the first limiting portion 512, and the plurality of second limiting grooves are respectively abutted against the upper sides of the plurality of header pipes. In this way, the plurality of first limiting grooves and the plurality of second limiting grooves cooperate to fix the plurality of header pipes. Furthermore, the first mounting member 51 and the second mounting member 52 cooperate to fix the relative positions of the heat exchange tube group 30 and the honeycomb fin 20, avoiding relative displacement between the two due to vibration, temperature change or other external factors during operation, thereby ensuring the stability and reliability of the overall structure of the tube-fin heat exchanger 1.

[0093] There are two first mounting members 51 and two second mounting members 52. The two first mounting members 51 are respectively connected to the opposite side surfaces of the honeycomb fin 20 along the third direction, and the two second mounting members are correspondingly connected to the two first mounting members, so that the two ends of the plurality of header pipes can be fixed.

[0094] Furthermore, the second mounting member 52 further includes a first mounting flange 522 connected to the second limiting portion 521 at an angle. The third mounting member 53 includes a mounting plate 531 and a second mounting flange 532 connected to the mounting plate 531 at an angle. Among them, the mounting plate 531 is connected to the inner wall surface of the housing body 111, and the first mounting flange 522 is installed on the second mounting flange 532. In this way, the third mounting member 53 is connected to the inner wall of the first housing 11 and is connected to the second mounting member 52 to install the honeycomb fin 20 in the first housing 11.

[0095] It should be noted that the third mounting member 53 is connected to the side of the housing body 111 close to the first top plate 112, so that the honeycomb fin 20 and the heat exchange tube group 30 are spaced apart from the first bottom plate 113 after installation, providing a flow space for the phase change material 40.

[0096] In an embodiment of the present application, the first top plate 112 of the first housing 11 has a plurality of first through holes, and the first water inlet connection pipe 332, the first water outlet connection pipe 342, the second water inlet connection pipe 352, and the second water outlet connection pipe 362 extend upward along the first direction X and respectively pass through the plurality of first through holes to extend out of the first housing 11 and communicate with the pipeline of the heat source or the municipal waterway.

[0097] Please refer to Figure 19 , Figure 19 FIG. is an exploded structural schematic diagram of a second housing 12 according to an embodiment of the present application. The second housing 12 includes a second top plate 121, a second bottom plate 122, and a plurality of side plates 123. The plurality of side plates 123 surround the periphery of the housing body 111. The second top plate 121 is disposed above the first top plate 112 and connected to the upper ends of the plurality of side plates 123. The second bottom plate 122 is disposed below the first bottom plate 113 and connected to the lower ends of the plurality of side plates 123. Among them, one of the plurality of side plates 123 is provided with a wiring hole and a plurality of second through holes. The pipeline of the heat source and the municipal waterway extend into the second housing 12 through the plurality of second through holes to be connected to the heat exchange tube group 30.

[0098] Please refer to Figures 19 - 20 , Figure 20 FIG. is a structural schematic diagram of an avoidance portion 1234 according to an embodiment of the present application. It should be noted that adjacent side plates 123 in the second housing 12 are connected by bolts, and some of the materials of the heat insulation layer 13 are relatively brittle. In order to avoid damage to the heat insulation layer 13 caused by the bolts, avoidance portions are provided in the mounting holes corresponding to the bolts in the second housing 12 to avoid direct contact between the bolts and the heat insulation layer 13 and generate pressure on it, causing the heat insulation layer 13 to be stressed and cracked or damaged.

[0099] The side plate 123 includes a plate body 1231. For two adjacent side plates 123, one of the side plates 123 further includes a third mounting flange 1232 connected to its plate body 1231 at an angle. The third mounting flange 1232 is provided with a mounting hole, and the plate body 1231 of the other side plate 123 is correspondingly provided with a mounting hole, so that the third mounting flange 1232 is connected to the outer wall surface of the plate body 1231 of the other side plate 123 by a bolt. The other side plate 123 further includes a fourth mounting flange 1233 connected to its plate body 1231. The fourth mounting flange 1233 has an avoidance portion 1234. The avoidance portion 1234 is located on the side of its plate body 1231 away from the third mounting flange 1232 and is parallel and spaced from its plate body 1231. The avoidance portion 1234 is provided corresponding to the mounting holes of the third mounting flange 1232 and the plate body 1231 of the other side plate 123.

[0100] As Figure 19In the second housing 12 shown, the fourth mounting flange 1233 has a plurality of avoidance portions 1234, and the plurality of avoidance portions 1234 are respectively disposed opposite to a plurality of mounting holes of its plate body 1231. Optionally, the fourth mounting flange 1233 may also be provided with one avoidance portion 1234 extending from top to bottom, and this avoidance portion 1234 is disposed opposite to a plurality of mounting holes of its plate body 1231.

[0101] In the Figure 19 In the second housing 12 shown, both of the two side plates 123 disposed opposite to each other in the second direction Y have two fourth mounting flanges 1233, and both of the two side plates 123 disposed opposite to each other in the third direction Z have two third mounting flanges 1232. Thus, avoidance portions 1234 are provided at each corner position after the four side plates 123 are connected and enclosed. In some other embodiments, one third mounting flange 1232 and one fourth mounting flange 1233 are respectively provided on opposite sides of each side plate 123 in the horizontal direction. Thus, it is also possible to provide avoidance portions 1234 at each corner position after the four side plates 123 are connected and enclosed, achieving the effect of protecting the heat insulation layer 13.

[0102] In an embodiment of the present application, the second top plate 121, the second bottom plate 122 and the plurality of side plates 123 are also connected by bolts. Among them, the distance between the second top plate 121 and the first top plate 112 is relatively far, so as to leave an installation position for the heat exchange tube group 30 and the external pipeline, and there is no need to consider damage to the heat insulation layer 13 caused by the bolts. The second bottom plate 122 has a second bottom plate flange extending in a direction away from the heat insulation layer 13, and the second bottom plate flange is bolted to the side plate 123 to avoid contact between the bolts and the heat insulation layer 13.

[0103] Figure 21 For Figure 19 the partial enlarged schematic view at F in Figure 22 For Figure 2 the partial enlarged schematic view at G in Figure 15 , Figure 21 and Figure 22 it can be seen that the first housing 11 and the second housing 12 are connected by the fourth mounting member 54 and the first support member 55. Among them, the fourth mounting member 54 is connected between the first top plate 112 and the side plate 123 to form a firm connection between the first housing 11 and the second housing 12. The first support member 55 is connected between the first bottom plate 113 and the second bottom plate 122, further fixing the position of the first housing 11 relative to the second housing 12 and providing support for the first housing 11.

[0104] Specifically, one end of the fourth mounting member 54 is connected to the top of the second housing 12, and the other end is connected to the outer wall of the first housing 11, so as to mount the first housing 11 inside the second housing 12. The finned tube heat exchanger 1 further includes a positioning member 56. The positioning member 56 is disposed on the side of the side plate 123 facing the housing body 111. The positioning member 56 is connected to the side plate 123 and forms a clamping groove therebetween, providing a clear positioning point for the installation of the fourth mounting member 54 and guiding the fourth mounting member 54 to be accurately positioned. In actual installation, after the installer connects one end of the fourth mounting member 54 to the first housing 11, the other end is clamped in the clamping groove, achieving preliminary alignment and fixation, and then the fourth mounting member 54 and the side plate 123 can be quickly and accurately connected, and there is no need to continuously hold the first housing 11, which helps to reduce the labor intensity of the installer.

[0105] The first support member 55 includes a first support portion 551, two second support portions 552 and two third support portions 553. The first support portion 551 extends along the third direction. The first support portion 551 is parallel to the plate surface of the first bottom plate 113 and is mounted on the outer wall surface of the first bottom plate 113. The two second support portions 552 are respectively connected to the opposite sides of the first support portion 551 along the third direction Z. The second support portion 552 is connected to the first support portion 551 at an angle. The two third support portions 553 are respectively connected to the sides of the two second support portions 552 away from the first support portion 551. The third support portion 553 is parallel to the plate surface of the second bottom plate 122 and is used for mounting on the inner wall surface of the second bottom plate 122. In the embodiment of the present application, the finned tube heat exchanger 1 includes two first support members 55. The two first support members 55 are oppositely arranged along the second direction Y to form a stable and balanced support for the first housing 11.

[0106] Please refer to Figure 1 and Figure 23 , Figure 23 For Figure 2Partial enlarged schematic view at H in the figure. The finned tube heat exchanger 1 of the present application further includes two second support members 57, and the two second support members 57 are installed at the bottom of the second housing 12 to facilitate the installation of the second housing 12 in the installation environment. The second support member 57 includes a fourth support portion 571, a fifth support portion 572, and a sixth support portion 573. The fourth support portion 571 extends in the third direction, and the fourth support portion 571 is parallel to the plate surface of the second bottom plate 122 and is installed on the outer wall surface of the second bottom plate 122. Among them, the close contact between the fourth support portion 571 and the second bottom plate 122 is beneficial to the dispersion and transmission of stress. The fifth support portion 572 is connected to one side of the fourth support portion 571 along the second direction Y at an angle. The sixth support portion 573 is connected to the side of the fifth support portion 572 away from the fourth support portion 571. The sixth support portion 573 extends in the third direction Z and is arranged parallel and spaced apart from the fourth support portion 571. It should be noted that the sixth support portion 573 is used to be installed in the installation environment. The plate surface of the sixth support portion 573 is relatively wide, so as to increase the installation stability with the installation environment by providing a larger contact area, and helps to reduce the pressure on the plate surface.

[0107] Please refer to Figure 24 , Figure 24 is an exploded structural schematic view of a heat insulation layer 13 according to an embodiment of the present application. In the embodiment of the present application, the heat insulation layer 13 includes a first heat insulation layer 131 and a second heat insulation layer 132. The first heat insulation layer 131 is connected to the outer wall surface of the first housing 11, and the second heat insulation layer 132 is connected to the side of the first heat insulation layer 131 away from the first housing 11; among them, the hardness of the second heat insulation layer 132 is greater than that of the first heat insulation layer 131, and the heat insulation coefficient of the second heat insulation layer 132 is greater than that of the first heat insulation layer 131.

[0108] Optionally, the first heat insulation layer 131 can be made of ethylene propylene diene monomer (EPDM) foamed sponge, and the second heat insulation layer 132 can be made of a vacuum insulation panel.

[0109] Continue to refer to Figure 24 , it can be seen that the first heat insulation layer 131 and the second heat insulation layer 132 are provided with avoidance holes corresponding to the first water inlet connection pipe 332, the first water outlet connection pipe 342, the second water inlet connection pipe 352, and the second water outlet connection pipe 362, and avoidance holes are also provided corresponding to the lines.

[0110] In an embodiment of the present application, the second heat insulation layer 132 is provided with an avoidance groove 1320 corresponding to the corner of the second housing 12. The avoidance groove 1320 extends along the first direction X, and an avoidance space is formed between the avoidance groove 1320 and the corner. It can be understood that for the corner formed between adjacent side plates 123 in the second housing 12, a plurality of avoidance portions 1234 are located near the corner. Therefore, the avoidance groove 1320 in the second heat insulation layer 132 provides space for the bolts and the avoidance portions 1234 to avoid interference. In a specific implementation, the second heat insulation layer 132 includes multiple heat insulation boards, and some of the heat insulation boards are provided with the above-mentioned avoidance groove 1320. The depth of the avoidance groove 1320 is less than the thickness of the heat insulation board to avoid overly weakening the heat insulation performance of the second heat insulation layer 132 near the avoidance groove 1320.

[0111] An embodiment of the present application further provides a heating and ventilation system, which includes the above-mentioned finned tube heat exchanger 1, a heat source module, a water usage module, and a heating module. The heat source module is the energy core of the heating and ventilation system. The heat source module is responsible for generating heat and delivering the generated heat to other modules of the heating and ventilation system. The heat source module is connected to the finned tube heat exchanger 1 to transfer heat to the phase change material 40 through the heat exchange tube group 30 for energy storage; the water usage module is connected to the finned tube heat exchanger 1 to receive the heat supplied by the phase change material 40 of the finned tube heat exchanger 1 and provide hot water for users. The heating module is connected to the heat source module through a heat transfer pipeline, and the heating module is used to receive the heat from the heat source module to heat users.

[0112] In an embodiment of the present application, the heating and ventilation system has a first working mode and a second working mode. In the first working mode of the heating and ventilation system, when the user has no heating requirement, the heat source module is connected to the finned tube heat exchanger 1, and the hot water of the heat source module only flows to the finned tube heat exchanger 1, and then provides heat for the water usage module through the finned tube heat exchanger 1; in the second working mode of the heating and ventilation system, when the user has a heating requirement, the finned tube heat exchanger 1 is in a state, the heat source module is connected to the heating module to provide heat for the heating module. Among them, the hot water of the heat source module only flows to the heating module and does not charge the finned tube heat exchanger 1.

[0113] Furthermore, the finned tube heat exchanger 1 has a charging mode and a discharging mode. When the finned tube heat exchanger 1 reaches the start-up charging condition, the heat storage flow path is connected to the pipeline of the heat source module, and the phase change material 40 inside is charged and stored with the heat provided by the heat source module. According to user needs, the heat release flow path is connected to the municipal water path, and the water in the heat release flow path is heated by using the stored heat of the phase change material 40 to meet the user's water usage requirements. Among them, the charging mode and the discharging mode can be carried out separately or simultaneously.

[0114] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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, it should not be construed as a limitation to the present utility model.

[0115] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0116] In the present utility model, unless otherwise clearly specified and defined, the terms "mounted", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0117] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0118] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0119] Although the embodiments of the present utility model have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present utility model. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present utility model.

Claims

1. A finned tube heat exchanger (1), characterized in that, Comprising: A honeycomb fin (20), inside which there are provided a plurality of heat conduction spaces (210) extending along a first direction (X), and the plurality of heat conduction spaces (210) are arranged at intervals; A heat exchange tube group (30), including a heat storage tube (31) and a heat release tube (32), both the heat storage tube (31) and the heat release tube (32) have a plurality of straight tube segments (301) arranged along a second direction (Y), the straight tube segments (301) extend along the first direction (X), and each straight tube segment (301) penetrates through a corresponding heat conduction space (210), wherein the first direction (X) intersects with the second direction (Y); And A phase change material (40), filled in the gaps between the honeycomb fin (20) and the heat storage tube (31), and between the honeycomb fin (20) and the heat release tube (32).

2. The finned tube heat exchanger (1) according to claim 1, characterized in that, The number of both the heat storage tubes (31) and the heat release tubes (32) is a plurality, and the plurality of heat storage tubes (31) and the plurality of heat release tubes (32) are arranged periodically along a third direction (Z); Wherein, the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other pairwise.

3. The finned tube heat exchanger (1) according to claim 2, characterized in that, Along the third direction (Z), there is at least one heat conduction space (210) spaced between any adjacent one heat storage tube (31) and one heat release tube (32), and the phase change material (40) is filled in the heat conduction space (210).

4. The finned tube heat exchanger (1) according to claim 2, characterized in that, The heat exchange tube group (30) further includes a heat storage water inlet pipe (33) and a heat storage water outlet pipe (34), the heat storage water inlet pipe (33) is communicated with the inlets of the plurality of heat storage tubes (31), and the heat storage water outlet pipe (34) is communicated with the outlets of the plurality of heat storage tubes (31); The heat exchange tube group (30) further includes a heat release water inlet pipe (35) and a heat release water outlet pipe (36), the heat release water inlet pipe (35) is communicated with the inlets of the plurality of heat release tubes (32), and the heat release water outlet pipe (36) is communicated with the outlets of the plurality of heat release tubes (32); Wherein, the heat storage water inlet pipe (33), the heat storage water outlet pipe (34), the heat release water inlet pipe (35) and the heat release water outlet pipe (36) are located on the same side of the honeycomb fin (20) along the first direction (X).

5. The finned tube heat exchanger (1) according to claim 4, characterized in that, The heat storage water inlet pipe (33) includes a first header pipe (331) and a first water inlet connecting pipe (332) connected to the first header pipe (331), and the first header pipe (331) is communicated with the inlets of the plurality of heat storage tubes (31); The heat storage water outlet pipe (34) includes a second header pipe (341) and a first water outlet connecting pipe (342) connected to the second header pipe (341), and the second header pipe (341) is communicated with the outlets of the plurality of heat storage tubes (31); The heat release water inlet pipe (35) includes a third header pipe (351) and a second water inlet connecting pipe (352) connected to the third header pipe (351), and the third header pipe (351) is communicated with the inlets of the plurality of heat release tubes (32); The heat-releasing water outlet pipe (36) includes a fourth header pipe (361) and a second water outlet connecting pipe (362) connected to the fourth header pipe (361), and the fourth header pipe (361) communicates with the outlets of a plurality of the heat-releasing pipes (32).

6. The finned tube heat exchanger (1) according to claim 5, characterized in that, The first header pipe (331), the second header pipe (341), the third header pipe (351), and the fourth header pipe (361) extend along the third direction (Z).

7. The finned tube heat exchanger (1) according to claim 1, characterized in that, At least a part of the side wall of the straight pipe section (301) is attached and connected to the honeycomb fins (20).

8. The finned tube heat exchanger (1) according to claim 1, characterized in that, The material of the honeycomb fins (20) includes at least one of copper, aluminum, silicon dioxide, and expanded graphite three-dimensional foam.

9. The finned tube heat exchanger (1) according to claim 1, wherein The heat exchange tube group (30) satisfies one of the following conditions: (1) The material of the heat exchange tube group (30) is at least one of copper, copper alloy, and stainless steel; (2) In the heat exchange tube group (30), the material of the heat storage pipes (31) and the heat-releasing pipes (32) is copper, and the material of other pipes is stainless steel.

10. The finned tube heat exchanger (1) according to claim 1, characterized in that, The tube-fin heat exchanger (1) further includes a housing (10), and the housing (10) includes: A first housing (11) having an installation space (110) inside, the honeycomb fins (20) are installed in the installation space (110), and the phase change material (40) is filled in the installation space (110); A second housing (12) provided outside the first housing (11); and A heat insulation layer (13) provided between the first housing (11) and the second housing (12).

11. The finned tube heat exchanger (1) according to claim 10, characterized in that, The first housing (11) includes a housing body (111) and a first top plate (112) and a first bottom plate (113) oppositely arranged along the first direction (X), and the housing body (111) has a cylindrical structure; Along the first direction (X), one end of the housing body (111) is connected to the first top plate (112), and the other end is connected to the first bottom plate (113), and the first top plate (112), the housing body (111), and the first bottom plate (113) together enclose and define the installation space (110).

12. The finned tube heat exchanger (1) according to claim 11, characterized in that, The heat exchange tube group (30) further includes a first water inlet connecting pipe (332), a first water outlet connecting pipe (342), a second water inlet connecting pipe (352), and a second water outlet connecting pipe (362) extending along the first direction (X); The first top plate (112) has a plurality of first through holes. Among them, the heat storage pipes (31) and the heat-releasing pipes (32) are arranged in the installation space (110), and the first water inlet connecting pipe (332), the first water outlet connecting pipe (342), the second water inlet connecting pipe (352), and the second water outlet connecting pipe (362) are respectively passed through a plurality of the first through holes.

13. The finned tube heat exchanger (1) according to claim 11, characterized in that, The tube-fin heat exchanger (1) further includes: A first mounting member (51) connected to the honeycomb fins (20), and the first mounting member (51) has a first limiting groove; The second mounting member (52) is connected to the first mounting member (51). The second mounting member (52) has a second limiting groove, which is arranged corresponding to the first limiting groove and clamps part of the pipes in the heat exchange tube group (30) in the first limiting groove.

14. The finned tube heat exchanger (1) according to claim 13, characterized in that, The second mounting member (52) further has a first mounting flange (522); The finned tube heat exchanger (1) further includes a third mounting member (53). The third mounting member (53) includes a mounting plate (531) and a second mounting flange (532). The mounting plate (531) is connected to the inner wall surface of the housing body (111), and the second mounting flange (532) is connected to the mounting plate (531), and the first mounting flange (522) is mounted on the second mounting flange (532).

15. The finned tube heat exchanger (1) according to claim 11, characterized in that, The first housing (11) further includes a rib plate (114), and the rib plate (114) includes: A first rib plate (1141) connected to the outer wall surface of the housing body (111) and extending along the circumferential direction of the housing body (111); and A second rib plate (1142) connected to opposite sides of the first rib plate (1141) along the first direction (X), and the second rib plate (1142) is connected to the first rib plate (1141) at an angle.

16. The finned tube heat exchanger (1) according to claim 11, wherein, The second housing (12) includes: A plurality of side plates (123) surrounding the periphery of the housing body (111); A second top plate (121) arranged above the first top plate (112) and connected to the upper ends of the plurality of side plates (123); and A second bottom plate (122) arranged below the second bottom plate (122) and connected to the lower ends of the plurality of side plates (123).

17. The finned tube heat exchanger (1) according to claim 16, characterized in that, The side plate (123) has a plate body (1231), and two adjacent side plates (123) are bolted together; For two adjacent side plates (123), one of the side plates (123) further includes a third mounting flange (1232) connected to its plate body (1231) at an angle. The third mounting flange (1232) is provided with a mounting hole so that the third mounting flange (1232) is mounted on the outer wall surface of the plate body (1231) of the other side plate (123); The other side plate (123) further includes a fourth mounting flange (1233) connected to its plate body (1231). The fourth mounting flange (1233) has an avoidance portion (1234), and the avoidance portion (1234) is parallel and spaced from the plate body (1231) of the other side plate (123) and is arranged corresponding to the mounting hole of the third mounting flange (1232).

18. The finned tube heat exchanger (1) according to claim 10, characterized in that, The heat insulation layer (13) includes: A first heat insulation layer (131) connected to the outer wall surface of the first housing (11); and A second heat insulation layer (132) connected to a side of the first heat insulation layer (131) away from the first housing (11); Wherein, the hardness of the second heat insulation layer (132) is greater than that of the first heat insulation layer (131), and the heat insulation coefficient of the second heat insulation layer (132) is greater than that of the first heat insulation layer (131).

19. The finned tube heat exchanger (1) according to claim 18, characterized in that, The second housing (12) includes a plurality of side plates (123), and adjacent two side plates (123) are connected, and a corner is formed at the connection part of the two; The second heat insulation layer (132) is provided with an avoidance groove (1320) corresponding to the corner, the avoidance groove (1320) extends along the first direction (X), and forms an avoidance space with the corner.

20. The finned tube heat exchanger (1) according to claim 16, characterized in that, The housing (10) further includes: A positioning member (56) is provided on the side of the side plate (123) facing the housing body (111), the positioning member (56) is connected to the side plate (123) and forms a clamping groove with the side plate (123); One end of the fourth mounting member (54) is mounted on the outer wall surface of the first top plate (112), and the other end is clamped in the clamping groove and connected to the side plate (123).

21. The finned tube heat exchanger (1) according to claim 16, characterized in that, The housing (10) further includes a first support member (55), and the first support member (55) includes: A first support portion (551), parallel to the plate surface of the first bottom plate (113) and mounted on the outer wall surface of the first bottom plate (113), the first support portion (551) extends along the third direction (Z); Two second support portions (552) are respectively connected to opposite sides of the first support portion (551) along the third direction (Z), and the second support portions (552) are connected to the first support portion (551) at an angle; and Two third support portions (553) are respectively connected to one sides of the two second support portions (552) away from the first support portion (551), the third support portions (553) are parallel to the plate surface of the second bottom plate (122) and are used for mounting on the inner wall surface of the second bottom plate (122); Wherein, the third direction (Z), the first direction (X), and the second direction (Y) are perpendicular to each other in pairs.

22. The finned tube heat exchanger (1) according to claim 16, characterized in that, The housing (10) further includes a second support member (57), and the second support member (57) includes: A fourth support portion (571), parallel to the plate surface of the second bottom plate (122) and mounted on the outer wall surface of the second bottom plate (122), the fourth support portion (571) extends along the third direction (Z); A fifth support portion (572) is connected to one side of the fourth support portion (571) along the second direction (Y) at an angle; and A sixth support portion (573) is connected to the side of the fifth support portion (572) away from the fourth support portion (571), the sixth support portion (573) extends along the third direction (Z) and is arranged in parallel and spaced apart from the fourth support portion (571), wherein, the third direction (Z), the first direction (X), and the second direction (Y) are perpendicular to each other in pairs.

23. A heating, ventilation and air conditioning (HVAC) system, characterized in that, Including: A heat source module; The finned tube heat exchanger (1) according to any one of claims 1-22, the heat source module is connected to the finned tube heat exchanger (1); A water-using module, connected to the finned tube heat exchanger (1).

24. A heating, ventilation and air conditioning (HVAC) system according to claim 23, wherein, It further includes: A heating module, connected to the heat source module through a heat transfer pipeline.

25. A heating, ventilation and air conditioning (HVAC) system according to claim 24, wherein, The HVAC system has a first working mode and a second working mode; In the first working mode of the HVAC system, the heat source module is in communication with the finned tube heat exchanger (1) to provide heat for the water-using module; In the second working mode of the HVAC system, the heat source module is in communication with the heating module to provide heat for the heating module.

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