Heat exchanger and heat exchange system

Abstract

The utility model relates to a heat exchanger and a heat exchange system. The heat exchanger comprises at least two partition plates, the partition plates are distributed at intervals, and a filling space is defined by the adjacent partition plates. The filling space is filled with the energy storage material, and the energy storage material conducts heat exchange through the partition plate; and the heat exchange tube is in contact with the partition plate. The air temperature in a building can be adjusted, heat or cold is stored in the off-peak electricity period and released in the peak electricity period, meanwhile, the starting and stopping frequency of a unit is reduced through the energy storage materials, energy saving is achieved, and therefore better economic benefits are obtained.

Description

TECHNICAL FIELD

[0001] The present application relates to a heat exchanger and a heat exchange system, and is suitable for the technical field of heat exchange equipment. BACKGROUND

[0002] In the prior art, in order to meet the needs of heating and cooling in buildings, air conditioners are usually used. Air conditioners use the principle of reverse Carnot cycle, that is, when the building needs to be heated, the refrigerant in the outdoor unit exchanges heat with the air outside the building to extract heat, and is transported to the indoor unit through the pipeline. The refrigerant exchanges heat with the air in the building to release heat to the building, thereby increasing the indoor temperature to achieve heating. When the building needs to be cooled, the refrigerant in the outdoor unit exchanges heat with the air outside the building to extract cold, and is transported to the indoor unit through the pipeline. The refrigerant exchanges heat with the air in the building to release cold to the building, thereby lowering the indoor temperature to achieve cooling.

[0003] Although the building insulation structure has a certain heat preservation effect, the specific heat capacity of the air in the building is relatively small, and the energy density is relatively small. Therefore, after the air conditioner operates to reach the temperature of heating and cooling, the building structure will leak cold and heat again after a period of time, causing the air conditioner to operate frequently. As we all know, the moment of starting the energy-using equipment is the moment of maximum energy consumption, and the energy efficiency ratio of this energy consumption is the lowest. Frequent start-stop will increase unnecessary energy consumption. In addition, the energy density of air is low and cannot be stored.

[0004] At present, there are many energy storage modules, which have a heat exchanger built-in. When storing energy, the medium in the heat exchanger transfers energy to the energy storage material in the energy storage module. When releasing energy, the medium in the heat exchanger extracts energy from the energy storage material in the energy storage module. The energy storage module does not exchange heat with the surrounding environment.

[0005] Chinese patent application 202421153877.X discloses a phase change energy storage device. The internal cavity of the shell can be separated by a partition plate, so that the placement box can be placed between the partition plates, thereby facilitating the placement and addition of the placement box and the energy storage material according to the phase change energy storage demand, and further enabling the energy storage material to fully absorb and discharge energy, thereby improving the flexibility and resource utilization efficiency of the energy storage device. The limiting groove can tightly fit with the outer wall of the metal pipe, so that the heat in the ventilation pipe can be conducted to the placement box under the action of the metal pipe, thereby improving the heat conduction efficiency. However, the energy storage material in the patent cannot exchange heat with the surrounding environment, so it is difficult to effectively utilize the stored energy. UTILITARIAN CONTENT

[0006] The application aims to design a heat exchanger and a heat exchange system, which can adjust air temperature, store heat or cold during valley electricity period, release during peak electricity period, reduce the frequency of unit start-stop, achieve energy saving, and achieve better economic benefits.

[0007] The application relates to a heat exchanger, comprising: at least two partition plates, which are spaced apart, and adjacent partition plates form a filling space; energy storage material, which is filled in the filling space and exchanges heat with the partition plates; and heat exchange pipes, which are in contact with the partition plates.

[0008] The partition plates comprise first plates and second plates, and the first plates and the second plates are staggered.

[0009] The heat exchanger further comprises end covers, which seal the upper and lower ends of the filling space.

[0010] The partition plates are provided with through holes, and the heat exchange pipes are inserted into the through holes to be in contact with the partition plates.

[0011] The heat exchange pipes are arranged between adjacent partition plates.

[0012] The partition plates are provided with openings for filling the energy storage material.

[0013] The application relates to a heat exchange system, comprising at least two heat exchangers.

[0014] The heat exchange system further comprises heat exchange rib plates, which are connected to the heat exchangers.

[0015] The heat exchanger and the heat exchange system have the following technical advantages:

[0016] (1) The heat exchanger can adjust air temperature through heat exchange between the partition plates and indoor air, store energy during valley electricity period, and release energy to indoor air through the partition plates during peak electricity period, so that a good economic benefit operation mode of valley electricity low price operation and peak electricity high price stop operation is realized, and the energy storage material reduces the frequency of unit start-stop and achieves energy saving.

[0017] (2) The heat exchanger in the application has at least two partition plates with different lengths and staggered distribution, so the contact area of the heat exchanger with air is large, and the heat exchange efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a perspective view showing the heat exchanger of the application.

[0019] Figure 2 is a schematic view showing the end cover of the application.

[0020] Figure 3 is a sectional view showing the heat exchanger of the application.

[0021] Figure 4 is a schematic view showing the partition plate of the application.

[0022] Figure 5 is a schematic view showing the heat exchange system of the application.

[0023] Figure 6 is a sectional view of the heat exchanger of another embodiment of the application.

[0024] Figure 7 is a sectional view of the heat exchanger of another embodiment of the application.

[0025] Figure 8 is a sectional view of the heat exchanger of another embodiment of the application. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions and advantages of the application more clear, the embodiments of the application will be described in detail below with reference to the drawings. It should be noted that the embodiments and features in the embodiments can be combined with each other without conflict; the "long" and "short" in the application are only for comparison and explanation, and do not represent the limitation of the respective numerical range. According to the heat exchanger and heat exchange system of the application, it can be applied to any closed form of internal and external heat exchange occasions, and is not limited to the heat exchange of buildings inside and outside.

[0027] According to the heat exchanger of the present application, at least two partition plates are arranged in a staggered manner, and a filling space is formed between adjacent partition plates; energy storage material 3 is filled in the filling space; heat exchange pipe 4 is in contact with the partition plate; when heat exchange medium in the heat exchange pipe 4 flows along the heat exchange pipe 4, heat exchange is performed with the partition plate and the energy storage material 3, and the energy storage material 3 exchanges heat with air through the partition plate. The "staggered arrangement" of the present application can refer to staggering in various directions in the drawings, and is not limited to the shape shown in the drawings. The partition plates are arranged at a certain distance apart, so that adjacent partition plates can surround the filling space, and the filling space is filled with energy storage material 3. Preferably, the filling space is a closed space. Preferably, the partition plate is in close contact with the heat exchange pipe 4, so that the energy of the heat exchange medium in the heat exchange pipe 4 can be efficiently transferred to the partition plate. Preferably, the energy storage material 3 filled in the filling space is in close contact with the partition plate and the heat exchange pipe 4, and can efficiently exchange heat with each other.

[0028] When the heat exchange medium in the heat exchange pipe 4 flows along the heat exchange pipe 4, energy can be simultaneously transferred to the partition plate and the energy storage material 3; after receiving the energy, the partition plate can simultaneously transfer heat to the energy storage material 3 when transferring heat to the air in the building; when the heat exchange medium in the heat exchange pipe 4 stops flowing and does not transfer energy, the energy storage material 3 can exchange heat with the air through the partition plate. The inflow end and the outflow end of the heat exchanger 4 are connected to a heat exchange medium circulation system. The heat exchange medium circulation system can be an air energy heat exchange system, in which case the heat exchange medium is refrigerant; the heat exchange medium circulation system can also be a system composed of industrial waste heat, solar energy, etc., in which case the heat exchange medium can be water or other medium such as heat-conducting oil.

[0029] In the embodiment of the present application, the adjacent partition plates can form a closed space for filling the energy storage material 3 through mechanical structure, bonding or welding, etc. In the embodiment of the present application, the energy storage material 3 can store and release energy through non-phase change or phase change materials, and the non-phase change material stores and releases energy by using its own sensible heat capacity, and the phase change material stores and releases energy by using its own latent heat in addition to its own sensible heat capacity. The partition plate is made of metal material, so as to have good heat conduction effect, and the contact surface of the partition plate with the air in the building itself or through surface treatment has good corrosion resistance. The heat exchange pipe 4 can be made of metal material, so as to withstand the pressure of the heat exchange medium, and the heat exchange pipe 4 can be a light pipe or a threaded pipe to strengthen heat exchange.

[0030] Figure 1 is a perspective view of the heat exchanger of the present application. As Figure 1As shown, the partition plate comprises a first plate 1 and a second plate 2, and the first plate 1 and the second plate 2 can be staggered. The adjacent first plate 1 and the second plate 2 enclose a closed filling space. The first plate 1 and the second plate 2 are provided with through holes, and the heat exchange pipe 4 is in the shape of U, and the heat exchange pipe 4 can be inserted into the through hole. The first plate 1, the second plate 2 and the heat exchange pipe 4 can be in contact through pipe expansion or welding. Due to the staggered distribution of the plurality of first plates 1 and the plurality of second plates 2, when energy is transferred to the air in the building through the first plate 1 and the second plate 2, the base area with the air in the building can be increased, and the heat exchange effect can be enhanced. In other embodiments, the heat exchange pipe 4 can also be a serpentine pipe or a plurality of parallel pipes.

[0031] In the embodiments of the present application, the filling space is composed of a plurality of first plates 1 and a plurality of second plates 2, as shown, the face of the filling space can be blocked by the end cap 5 to seal the filling space. Figure 2

[0032] Figure 3 is a cross-sectional view of the heat exchanger of the present application. As shown, Figure 3 The length of the second plate 2 is shorter than the length of the first plate 1, and the distance between the end of the first plate 1 and the end of the second plate 2 can be in the range of 0.1-80mm. The lengths of the plurality of first plates 1 and / or the plurality of second plates 2 can be the same or different. It should be noted that increasing the distance difference between the first plate 1 and the second plate 2 can increase the heat exchange area of the heat exchanger and the air in the building when the first plate 1 and the second plate 2 are closely arranged.

[0033] Figure 4 is a schematic view of the partition plate of the present application. As shown, Figure 4 In order to increase the heat exchange contact surface with the heat exchange pipe 4, the through hole of the partition plate matched with the heat exchange pipe 4 has a first flange structure 11. In order to increase the heat dissipation area with the energy storage material 3, the partition plate has a second flange structure 12. In order to increase the heat exchange area with the air in the building, the partition plate has an end structure 13, which can be rectangular, circular, triangular and polygonal. In order to facilitate the filling of the energy storage material 3, the partition plate is provided with an opening for filling the energy storage material 3.

[0034] According to a heat exchange system of the present application, a plurality of heat exchangers are connected in series, in parallel or in a combination of both. By connecting a plurality of heat exchangers, a larger energy storage capacity and improved heat exchange capacity with the air in the building can be obtained. Preferably, as shown, Figure 5 A heat exchange rib plate 6 is further provided, which connects two or more heat exchangers to increase the heat exchange area and improve the heat exchange efficiency.

[0035] In another preferred embodiment of the present application, as shown,​Figure 6 As shown, two partition plates form a partition plate group 8, the energy storage material 3 is filled in the partition plate, the micro-channel flat tube 7 is arranged between the two partition plates, the spacing 9 is formed between the two partition plate groups 8, and the heat exchange between the partition plate group 8 and the air is facilitated. Figure 7 As shown, the gap can also not exist between the two partition plate groups 8. Figure 8 As shown, the partition plates in the partition plate group 8 can be arranged in a staggered manner, and a plurality of protrusions 10 are arranged on the partition plates to increase the heat exchange area between the partition plate group 8 and the air and improve the heat exchange efficiency.

[0036] Although the embodiments disclosed in the present application are as above, the content described is only the embodiments adopted for the convenience of understanding the present application, and is not used to limit the present application. Any person skilled in the art to which the present application belongs can make any modification and change in the form and details without departing from the spirit and scope of the present application, but the patent protection scope of the present application shall be subject to the scope defined by the appended claims.

Claims

1. A heat exchanger, characterized by, The application relates to a heat exchanger. The heat exchanger comprises: at least two partition plates, which are spaced apart, and adjacent partition plates form a filling space; energy storage material filled in the filling space, which exchanges heat with the partition plates; 2. The heat exchanger of claim 1, wherein heat exchange pipes in contact with the partition plates.

3. The heat exchanger of claim 1, wherein The partition plates comprise first plates and second plates staggered with the first plates.

4. The heat exchanger of claim 1, wherein The partition plates comprise first plates and at least one second plate shorter than the first plates, and the first plates and the second plates are staggered, and adjacent first plates and second plates form a filling space.

5. The heat exchanger according to any one of claims 1-4, characterized in that The partition plates are provided with openings for filling energy storage material.

6. The heat exchanger according to any one of claims 1-4, characterized in that The heat exchanger is further provided with end covers for sealing upper and lower end faces of the filling space.

7. The heat exchanger according to any one of claims 1-4, characterized in that The partition plates are provided with through holes, and the heat exchange pipes are inserted into the through holes to be in contact with the partition plates.

8. The heat exchanger of claim 6, wherein The heat exchange pipes are arranged between adjacent partition plates.

9. A heat exchange system, characterized by, The through holes have a flange structure in engagement with the heat exchange pipes; or the partition plates have at least one of a second flange structure and an end structure.

10. The heat exchange system of claim 9, wherein, The heat exchanger comprises at least two heat exchangers according to any one of claims 1-8. The heat exchanger is further provided with heat exchange rib plates for connecting the heat exchangers.

Images