Integrated interval type heat exchange and energy storage plate

Abstract

The utility model discloses an integrated interval type heat exchange and energy storage plate which is provided with a heat exchange medium channel and a phase change energy storage material containing cavity which are distributed at intervals, the two ends of the heat exchange medium channel are respectively provided with a flow channel end connector, the two ends of the phase change energy storage material containing cavity are sealed through plugs, and each flow channel end connector is composed of a pipe body and a plugging ring arranged at one end of the pipe body in a sleeved mode. The plug is composed of a plugging piece and a clamping rod perpendicularly fixed to the side face of the plugging piece, or the plug is composed of an inner plugging piece, an outer plugging piece and a connecting rod, wherein the inner plugging piece and the outer plugging piece are parallel to each other, and the connecting rod is connected with the inner plugging piece and the outer plugging piece. The heat exchange and energy storage plate is provided with the heat exchange medium channels and the phase change energy storage material containing cavities which are distributed in a staggered mode, the structure is compact, the heat exchange and energy storage efficiency is high, and the heat exchange and energy storage plate is suitable for industrial popularization and utilization.

Description

Technical Field

[0001] The utility model relates to the technical field of phase change energy storage, in particular to an integrated spaced heat exchange energy storage plate. Background Art

[0002] Strengthening the effective recycling and utilization of waste heat resources, improving energy utilization efficiency, and developing various new technologies for renewable energy are effective ways to solve the energy crisis. However, there is a common problem in the utilization of renewable energy and waste heat resources. On the energy consumption side, the demand for cold, hot, and electric loads of living and production end users such as schools, hospitals, shopping malls, and factories will also fluctuate greatly over time. The above objective problems make energy supply and demand mismatched in time and space, resulting in insufficient energy utilization and serious waste of waste heat resources.

[0003] Energy storage technology is a technology that uses energy storage materials with a certain specific volume to store temporarily different energies and use them when needed. This technology can effectively solve the problem of energy supply and demand mismatch in time and quantity, thereby improving energy efficiency. In recent years, with the in-depth research and continuous exploration of energy storage technology by scholars, energy storage technology has played an increasingly important role in the development of new energy, improving energy utilization, and coordinating the mismatch between energy supply and demand in quantity and time. Therefore, it has broad application prospects in the fields of electricity "peak shifting and valley filling", recycling of industrial waste heat, utilization of solar energy, energy saving of heat pump systems, and civil building energy.

[0004] At present, some heat exchange and heat storage devices have emerged to meet the needs of energy storage, as shown in patent references 1-3:

[0005] Reference 1: Chinese patent document with patent publication number CN111637775A.

[0006] Reference 1 discloses a phase change heat exchange device, comprising a housing; a phase change energy storage plate, the phase change energy storage plate being used to absorb or release heat for solid-solid phase change; a first heat exchange channel, the first heat exchange channel being used to transport a first heat exchange medium and to exchange heat with the phase change energy storage plate; a second heat exchange channel, the second heat exchange channel being used to transport a second heat exchange medium and to exchange heat with the phase change energy storage plate; wherein the phase change energy storage plate, the first heat exchange channel and the second heat exchange channel are located in the housing, and the phase change energy storage plate is heat-conducted with the first heat exchange channel and the second heat exchange channel respectively. The device uses a phase change energy storage plate to conduct heat and store energy to improve heat exchange efficiency.

[0007] Reference 2: Chinese patent document with patent publication number CN219064231U.

[0008] Reference 2 discloses a shell and tube phase change energy storage device, including an energy storage device body and a plurality of heat exchange tube bundles, wherein the heat exchange tube bundles are located inside the energy storage device body and are filled with phase change materials; the inner wall of the energy storage device body is also connected to a plurality of staggered baffles; a water inlet and a water outlet are provided on the outer wall of the energy storage device body; each of the heat exchange tube bundles is provided with a plurality of transversely and longitudinally staggered metal wires. The energy storage device improves the heat exchange efficiency by changing the spatial structure, and at the same time improves the energy utilization rate, thereby effectively solving the problem of large peak and trough differences in the power plant load, reducing production costs, and improving the overall economic benefits of the enterprise.

[0009] Reference 3: Chinese patent document with patent publication number CN215766655U.

[0010] Reference 3 discloses a tube cluster type solid-liquid phase change energy storage heat exchanger. The shell of the tube cluster type solid-liquid phase change energy storage heat exchanger is provided with multiple groups of PCM tubes, phase change materials are provided in the PCM tubes, and the gaps outside the PCM tubes are fluid gaps. The tube cluster type solid-liquid phase change energy storage heat exchanger has a compact structure, and the heat exchanger volume required for the same heat exchange capacity is small. The PCM tubes of the tube cluster type solid-liquid phase change energy storage heat exchanger are provided with phase change materials, and the outside of the tubes are heat exchange fluids. When charging cold, the cold fluid with a temperature lower than the solidification point of the phase change material passes through the PCM tube wall for heat exchange, so that the phase change material in the tube is continuously solidified, thereby storing the cold in the phase change material in the form of latent heat; when releasing the cold, the hot fluid with a temperature higher than the melting point of the phase change material passes through the outside of the PCM tube, so that the phase change material in the tube is continuously melted, and the accumulated cold is released.

[0011] The above disclosed energy storage heat exchange devices are all capable of storing and releasing heat. However, the structures are complex, and the energy storage heat exchanger structure that can achieve the above functions is not limited to the above three methods. Based on this, the applicant proposes an integrated spaced heat exchange energy storage plate that is different from the prior art. Utility Model Content

[0012] The purpose of the utility model is to enrich the technical route of heat exchange and heat storage elements and to provide an integrated spaced heat exchange and energy storage plate different from the prior art.

[0013] The technical solution of the utility model is: an integrated spaced heat exchange energy storage plate, which has spaced heat exchange medium channels and phase change energy storage material cavities;

[0014] Both ends of the heat exchange medium channel are provided with flow channel end joints, and both ends of the phase change energy storage material cavity are closed by plugs;

[0015] The flow channel end joint is composed of a pipe body and a plugging ring sleeved on one end of the pipe body. The flow channel end joint is provided with a plugging ring, one end of which is placed in the heat exchange medium channel. The cross section of the plugging ring is suitable for the cross section of the heat exchange medium channel. A sealing material perfusion cavity is formed between the outer wall of the pipe body, the plugging ring and the inner wall of the heat exchange medium channel.

[0016] The plug is composed of a plugging piece and a clamping rod vertically fixed to the side of the plugging piece. The cross section of the plugging piece is suitable for the cross section of the phase change energy storage material cavity. A sealing material perfusion cavity is formed between the plugging piece and the inner wall of the phase change energy storage material cavity.

[0017] Or the plug is composed of an inner plugging piece and an outer plugging piece which are parallel to each other and a connecting rod connecting the inner plugging piece and the outer plugging piece, the cross-section of the inner plugging piece is suitable for the cross-section of the phase change energy storage material cavity, the cross-section of the outer plugging piece is larger than the cross-section of the phase change energy storage material cavity, and a sealing material infusion cavity is formed between the outer plugging piece, the inner plugging piece and the inner wall of the phase change energy storage material cavity, and a plurality of sealing material infusion holes are provided on the outer plugging piece.

[0018] As a further optimization of the integrated spaced heat exchange and energy storage plate of the utility model: the material of the heat exchange and energy storage plate is PP, PE or PPS.

[0019] As a further optimization of the integrated spaced heat exchange energy storage plate of the utility model: the phase change energy storage material cavity and the heat exchange medium channel are both channels with rectangular cross-sections, and the cross-sectional size of the heat exchange medium channel is smaller than the cross-sectional size of the phase change energy storage material cavity.

[0020] As a further optimization of the integrated spaced heat exchange energy storage plate of the utility model: the phase change energy storage material cavity is a channel with a rectangular cross section, and the heat exchange medium channel is a channel with a circular or elliptical cross section.

[0021] As a further optimization of the integrated spaced heat exchange and energy storage plate of the utility model: the heat exchange medium channel is a channel with a circular or elliptical cross-section, and the side of the phase change energy storage material cavity adjacent to the heat exchange medium channel is a curved surface adapted to the shape of the heat exchange medium channel.

[0022] The heat exchange and energy storage plate in the utility model has staggered heat exchange medium channels and phase change energy storage material cavities, has a compact structure, high heat exchange and energy storage efficiency, and is suitable for industrial promotion and utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic structural diagram of the heat exchange medium channel and the phase change energy storage material cavity (first design) of the heat exchange energy storage plate in Example 1;

[0024] Figure 2 It is a schematic structural diagram of the heat exchange medium channel and the phase change energy storage material cavity (second design) of the heat exchange energy storage plate of Example 1;

[0025] Figure 3 It is a schematic structural diagram of the heat exchange medium channel and the phase change energy storage material cavity (third design) of the heat exchange energy storage plate of Example 1;

[0026] Figure 4 This is a schematic diagram of the structure of the heat exchange and energy storage plate of Example 1;

[0027] Figure 5 for Figure 4 A local enlarged schematic diagram of the middle A;

[0028] Figure 6 This is a schematic diagram of the side view structure of the plug in the heat exchange and energy storage plate of Example 1;

[0029] Figure 7 This is a schematic diagram of the top view of the plug in the heat exchange and energy storage plate of Example 1;

[0030] Figure 8 This is a schematic diagram of the side view structure of the flow channel end joint in the heat exchange and energy storage plate of Example 1;

[0031] Fig. 9 This is a schematic diagram of the top view of the flow channel end joint in the heat exchange and energy storage plate of Example 1;

[0032] Fig.10 It is a schematic diagram of the local structure of the plug and the flow channel end joint in the heat exchange energy storage plate of Example 2;

[0033] Fig.11 This is a schematic diagram of the structure of the plug in the heat exchange and energy storage plate of Example 2;

[0034] Markings in the figure:

[0035] 1. Heat exchange medium channel;

[0036] 2. Phase change energy storage material cavity;

[0037] 3. Flow channel end joint; 31. Pipe body; 32. Sealing ring;

[0038] 4. Plug; 41. Inner plug; 42. Outer plug; 43. Connecting rod; 44. Sealing piece; 45. Clamping rod. DETAILED DESCRIPTION

[0039] In order to better understand the present invention, the content of the present invention is further explained below in conjunction with embodiments, but the content of the present invention is not limited to the following embodiments.

[0040] Example 1

[0041] The integrated spaced heat exchange energy storage plate has spaced heat exchange medium channels 1 and phase change energy storage material cavities 2. Both ends of the heat exchange medium channel 1 are provided with flow channel end joints 3, and both ends of the phase change energy storage material cavities 2 are closed by plugs 4.

[0042] Overall, the heat exchange energy storage plate has only one layer, in which the heat exchange medium channel 1 and the phase change energy storage material cavity 2 are alternately distributed. Regarding the cross-sectional shape of the phase change energy storage material cavity 2 and the heat exchange medium channel 1, there can be at least the following three designs:

[0043] First design: Figure 1 As shown, the phase change energy storage material cavity 2 and the heat exchange medium channel 1 are both channels with rectangular cross-sections, and the cross-sectional size of the heat exchange medium channel 1 is smaller than that of the phase change energy storage material cavity 2 .

[0044] Second design: Figure 2 As shown, the phase change energy storage material cavity 2 is a channel with a rectangular cross section, and the heat exchange medium channel 1 is a channel with a circular or elliptical cross section.

[0045] The third design: Figure 3 As shown in FIG. 1 , the heat exchange medium channel 1 is a channel with a circular or elliptical cross section, and the side of the phase change energy storage material cavity 2 adjacent to the heat exchange medium channel 1 is a curved surface adapted to the shape of the heat exchange medium channel 1. Compared with the second design, this structural design makes the distance between the heat exchange medium and the phase change energy storage material more uniform, and there is no Figure 2 The upper and lower parts of the heat exchange medium channel 1 are far away from the phase change energy storage material.

[0046] like Figure 4-9 As shown, in this embodiment, the flow channel end joint 3 is composed of a tube body 31 and a sealing ring 32 sleeved on one end of the tube body. The flow channel end joint 3 is provided with a sealing ring at one end placed in the heat exchange medium channel 1. The cross-section of the sealing ring is suitable for the cross-section of the heat exchange medium channel 1, and a sealing material infusion cavity is formed between the outer wall of the tube body, the sealing ring and the inner wall of the heat exchange medium channel 1.

[0047] The plug 4 is composed of an inner plugging piece 41 and an outer plugging piece 42 which are parallel to each other and a connecting rod 43 connecting the inner plugging piece and the outer plugging piece. The cross-section of the inner plugging piece is suitable for the inner diameter of the phase change energy storage material cavity 2, and the cross-section of the outer plugging piece is larger than the cross-section of the phase change energy storage material cavity. A sealing material injection cavity is formed between the outer plugging piece, the inner plugging piece and the inner wall of the phase change energy storage material cavity 2, and a plurality of sealing material injection holes are provided on the outer plugging piece.

[0048] The integrated spaced heat exchange energy storage plate is obtained through the following process:

[0049] A plate body having a heat exchange medium channel 1 and a phase change energy storage material cavity 2 is obtained by injection molding;

[0050] The inner plugging piece of the plug 4 is placed in the phase change energy storage material cavity 2, and the outer plugging piece is placed at the port of the phase change energy storage material cavity 2. The sealing material is added into the sealing material filling cavity between the outer plugging piece, the inner plugging piece and the inner wall of the phase change energy storage material cavity 2 through the filling hole on the outer plugging piece to complete the sealing of one end of the phase change energy storage material cavity 2, and then the phase change energy storage material is added into the phase change energy storage material cavity 2, and the other end of the phase change energy storage material cavity 2 is closed according to the above operation.

[0051] Place one end of the flow channel end joint 3 with the sealing ring in the heat exchange medium channel 1, clamp the other end of the tube body, and add sealing material into the sealing material injection cavity between the outer wall of the tube body, the sealing ring and the inner wall of the heat exchange medium channel 1 to complete the sealing installation of the joints at both ends of the heat exchange medium channel 1.

[0052] Example 2

[0053] The overall structure of the integrated spaced heat exchange and energy storage plate in this embodiment is basically the same as that in Embodiment 1, and the difference lies in the structure of the plug 4.

[0054] like Fig.10 and 11 As shown, in this embodiment, the plug 4 is composed of a sealing piece 44 and a clamping rod 45 vertically fixed to the side of the sealing piece. The cross-section of the sealing piece is suitable for the cross-section of the phase change energy storage material cavity 2, and a sealing material infusion cavity is formed between the sealing piece and the inner wall of the phase change energy storage material cavity 2.

[0055] The integrated spaced heat exchange energy storage plate is obtained by the following process:

[0056] The plate body having the heat exchange medium channel 1 and the phase change energy storage material cavity 2 is obtained by injection molding.

[0057] Place the sealing piece of the plug 4 in the phase change energy storage material cavity 2, clamp the clamping rod, add sealing material into the sealing material injection cavity between the sealing piece and the inner wall of the phase change energy storage material cavity 2, complete the sealing of one end of the phase change energy storage material cavity 2, then add phase change energy storage material into the phase change energy storage material cavity 2, and complete the sealing of the other end of the phase change energy storage material cavity 2 according to the above operation.

[0058] Place one end of the flow channel end joint 3 with the sealing ring in the heat exchange medium channel 1, clamp the other end of the tube body, and add sealing material into the sealing material injection cavity between the outer wall of the tube body, the sealing ring and the inner wall of the heat exchange medium channel 1 to complete the sealing installation of the joints at both ends of the heat exchange medium channel 1.

[0059] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various modifications or variations within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. An integrated spaced heat exchange and energy storage plate, comprising a plate body, characterized in that: The plate body has heat exchange medium channels and phase change energy storage material cavities that are distributed at intervals; Both ends of the heat exchange medium channel are provided with flow channel end joints, and both ends of the phase change energy storage material cavity are closed by plugs; The flow channel end joint includes a tube body and a sealing ring sleeved on one end of the tube body. The flow channel end joint has one end of the sealing ring placed in the heat exchange medium channel. The cross-section of the sealing ring is suitable for the cross-section of the heat exchange medium channel. A sealing material infusion cavity is formed between the outer wall of the tube body, the sealing ring and the inner wall of the heat exchange medium channel.

2. The integrated spaced heat exchange and energy storage plate according to claim 1, characterized in that: The plug includes a plugging piece and a clamping rod vertically fixed to the side of the plugging piece. The cross section of the plugging piece is suitable for the cross section of the phase change energy storage material cavity. A sealing material perfusion cavity is formed between the plugging piece and the inner wall of the phase change energy storage material cavity.

3. The integrated spaced heat exchange and energy storage plate according to claim 1, characterized in that: The plug includes an inner plugging piece and an outer plugging piece which are parallel to each other and a connecting rod connecting the inner plugging piece and the outer plugging piece. The cross section of the inner plugging piece is suitable for the cross section of the phase change energy storage material cavity. The cross section of the outer plugging piece is larger than the cross section of the phase change energy storage material cavity. A sealing material infusion cavity is formed between the outer plugging piece, the inner plugging piece and the inner wall of the phase change energy storage material cavity. A plurality of sealing material infusion holes are provided on the outer plugging piece.

4. The integrated compartment heat exchange and energy storage plate according to claim 1, characterized in that: The material of the plate is PP, PE or PPS.

5. The integrated compartment heat exchange and energy storage plate according to claim 1, characterized in that: The phase change energy storage material cavity and the heat exchange medium channel are both channels with rectangular cross-sections, and the cross-sectional size of the heat exchange medium channel is smaller than the cross-sectional size of the phase change energy storage material cavity.

6. The integrated compartment heat exchange and energy storage plate according to claim 1, characterized in that: The phase change energy storage material cavity is a channel with a rectangular cross section, and the heat exchange medium channel is a channel with a circular or elliptical cross section.

7. The integrated compartment heat exchange and energy storage plate according to claim 1, characterized in that: The heat exchange medium channel is a channel with a circular or elliptical cross section, and the side of the phase change energy storage material cavity adjacent to the heat exchange medium channel is a curved surface adapted to the shape of the heat exchange medium channel.

Images