Regeneration device and refrigeration and heating device

Abstract

Provided in the present application are a regeneration device and a refrigeration and heating device. The regeneration device comprises: a sleeve and solid elastocaloric material plates, wherein the inner wall of the sleeve includes protrusions, and the plurality of solid elastocaloric material plates are stacked in the sleeve; each solid elastocaloric material plate includes recesses, and a space formed by stacking the plurality of recesses is configured to accommodate the protrusions on the inner wall of the sleeve; and a gap between the space formed by stacking the recesses and the protrusions forms a flow cavity for a thermally conductive fluid to circulate therein. In the present application, by means of providing the protrusions on the inner wall of the sleeve and extending the protrusions into the recesses of the solid elastocaloric material plates, the positions of the solid elastocaloric material plates can be fixed, and the flow resistance in the gap between the recesses and the protrusions is relatively small, which can improve the thermal conduction efficiency. In addition, the contact area between the thermally conductive fluid in the flow cavity and the solid elastocaloric material plates is relatively large, thereby further improving the thermal conduction efficiency of the thermally conductive fluid.

Description

A regenerative device and a refrigeration and heating device

[0001] This application claims priority to Chinese Patent Application No. CN202510073988.2, filed January 17, 2025, entitled "A Regenerative Device and a Cooling / Heating Device," and to Chinese Patent Application No. CN202520109031.4, also filed January 17, 2025. The disclosure of the earlier applications is incorporated herein by reference in its entirety. Technical Field

[0002] This application belongs to the field of refrigeration and heating technology, and particularly relates to a regenerative device and a refrigeration and heating device. Background Technology

[0003] Solid-state spring-loaded cooling and heating technology is an emerging green and environmentally friendly cooling and heating technology. It uses solid-state spring-loaded materials to cause phase change or reverse phase change to generate heat or cold, thereby achieving cooling or heating.

[0004] The refrigeration and heating device based on this principle applies stress to a solid elastic material through a driving device and sets a flow cavity in the solid elastic material. A heat-conducting fluid is passed through the material under the action of a pump, and the heat or cold generated is transferred using the heat-conducting fluid. When loading the solid elastic material, excessive loading and unloading cycles can cause local buckling deformation of the blocky solid elastic material. Therefore, the solid elastic material is designed as sheets, each with perforations, which are stacked to form a flow cavity. However, in practical applications, the stacked sheet-like solid elastic material is easily misaligned during the stress application process of the driving device, causing blockage of the flow cavity and reducing the thermal conductivity of the heat-conducting fluid.

[0005] To improve heat transfer efficiency, the flow rate of the heat transfer fluid should be increased as much as possible. A common approach is to reduce the cross-sectional area of ​​the flow cavity while maintaining a given pump power. This is achieved by designing a smaller shape or adding a stopper to a larger shape. However, considering the flow resistance, an excessively small flow cavity will significantly limit the flow rate of the heat transfer fluid, hindering heat transfer. Adding a stopper will cause the actuator to simultaneously apply stress to the stopper, and the reaction force of the stopper will result in excessively low actuator loading efficiency, increasing the energy consumption ratio of the refrigeration and heating device. Technical issues

[0006] The purpose of this application is to provide a heat recovery device and a cooling and heating device, which aims to solve the technical problem that the flow cavity in the prior art easily restricts the flow rate of the heat-conducting fluid, resulting in low heat conduction efficiency. Technical solutions

[0007] This application provides a heat recovery device, including: a sleeve and solid spring clip material plates. The inner wall of the sleeve includes protrusions and multiple solid spring clip material plates are stacked inside the sleeve. Each solid spring clip material plate includes a groove. The space formed by stacking the multiple grooves is used to accommodate the protrusions of the inner wall of the sleeve. After the protrusions extend into the space formed by the stacked grooves, the gap between the inner wall of the sleeve and the outer surface of the stacked solid spring clip material plates forms a flow cavity for the flow of heat-conducting fluid.

[0008] Furthermore, each of the solid spring clip material plates has multiple grooves that correspond one-to-one with the protrusions on the inner wall of the sleeve, and the edges of the grooves are serrated.

[0009] Furthermore, the gap between the inner wall of the sleeve and the groove edge of the solid spring clip material plate is 0.1-5mm, preferably 0.1-2.0mm.

[0010] Furthermore, the surface of the solid spring card material plate also includes: perforations, which are stacked to form a second flow cavity.

[0011] Furthermore, the outer surface of the protrusion engages with the inner surface of the stacked groove, and a partition is provided on the inner wall of the sleeve, the partition being Teflon, POM, nylon, polyester, or silicone.

[0012] Furthermore, the convex surface of the protrusion engages with the concave surface of the groove, such that the remaining inner wall of the sleeve (excluding the convex surface) and the outer edge of the remaining solid elastic material plate (excluding the concave surface) form a flow cavity.

[0013] Furthermore, the thickness of the solid spring clip material plate is 0.01-100mm, preferably 0.1-10mm.

[0014] This application also provides a cooling and heating device, including: a regenerative device and a driver as described above; the driver includes: a power element, a pressure rod and a pressure head, the power element is connected to one end of the pressure rod, the pressure head is placed at the other end of the pressure rod, and the power element drives the pressure rod to make the pressure head reciprocate within the sleeve to load or unload the solid spring card material plate.

[0015] Furthermore, the shape of the pressure head is the same as the shape of the solid spring card material plate.

[0016] Furthermore, the pressure head is made of ceramic or tungsten steel. Beneficial effects

[0017] The regenerative device and refrigeration / heating device provided in this application have at least the following technical advantages: The protrusions on the inner wall of the sleeve extend into the grooves of the solid spring-loaded material plate. On the one hand, this fixes the position of the solid spring-loaded material plate, restricting its movement to avoid misalignment. On the other hand, the flow cavity formed by the gap between the groove space created by the stacked solid spring-loaded material plates and the protrusions is elongated and slender, with a larger size and lower flow resistance. Furthermore, the protrusions increase the flow velocity of the heat-conducting fluid, thus increasing the heat transfer efficiency. In addition, the larger contact area between the heat-conducting fluid and the solid spring-loaded material in this flow cavity further improves the heat transfer efficiency. Moreover, designing the actuator's pressure head to be the same shape as the solid spring-loaded material plate avoids the reaction force when the actuator loads the solid spring-loaded material plate, thereby improving the energy efficiency ratio of the refrigeration / heating device. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a cross-sectional view of a solid spring clip material plate in a regenerating device according to an embodiment of this application;

[0020] Figure 2 is a structural diagram of a refrigeration and heating device provided in an embodiment of this application;

[0021] Figure 3 is a cross-sectional view of a refrigeration and heating device provided in an embodiment of this application. Embodiments of the present invention

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] Figure 1 shows a regenerative device provided in an embodiment of this application, comprising: a sleeve 1 and solid spring-loaded material plates 2. The inner wall of the sleeve 1 includes protrusions 11, and multiple solid spring-loaded material plates 2 are stacked inside the sleeve 1. Each solid spring-loaded material plate 2 includes a groove 21. The space formed by the stacking of multiple grooves 21 is used to accommodate the protrusions 11 on the inner wall of the sleeve 1. After the protrusions 11 extend into the space formed by the stacked grooves 21, the gap between the inner wall of the sleeve 1 and the outer surface of the stacked solid spring-loaded material plates 2 forms a flow cavity for the flow of heat-conducting fluid. In order to distinguish it from the second flow cavity formed by the subsequent perforation 22, the flow cavity formed between the inner wall of the sleeve 1 and the outer surface of the stacked solid spring-loaded material plates 2 can also be defined as the first flow cavity.

[0024] In practical applications, the larger the volume (mass or volume) of the solid spring-loaded material, the more heat or cold it generates. Therefore, in order to maximize the absorption of the heat or cold generated by the solid spring-loaded material by the medium, this embodiment also needs to ensure that the amount of solid spring-loaded material is matched with its heat transfer capacity. Generally, designing a larger flow cavity size can ensure that the same mass of solid spring-loaded material has a larger specific surface area or volume. That is to say, in this embodiment, the number and size of the solid spring-loaded material plates 2 need to be designed according to the required flow cavity size.

[0025] In one embodiment of this application, each solid spring-loaded material plate 2 has multiple grooves 21 and multiple protrusions 11 on the inner wall of the sleeve 1, and they correspond one-to-one. The number of protrusions 11 on the inner wall of the sleeve 1 is the same as the number of spaces formed by the grooves 21 after the multiple solid spring-loaded material plates 2 are stacked, and the multiple protrusions 11 are respectively embedded in the spaces formed by the grooves 21 after the multiple solid spring-loaded material plates 2 are stacked. In this embodiment, the protrusions 11 extend longitudinally along the sleeve 1, and their length is greater than or equal to the length of the multiple solid spring-loaded material plates 2 after stacking. In this way, the position of the solid spring-loaded material plates 2 can be fixed to a certain extent, and the misalignment of the solid spring-loaded material plates 2 can be limited. In order to increase the cross-sectional area of ​​the flow cavity, multiple protrusions 11 and multiple grooves 21 can be arranged at different angles. In order to further increase the cross-sectional area of ​​the flow cavity, a serrated structure can also be provided on the edge of the groove 21 of the solid spring-loaded material plate 2 to form a small microfluidic cavity and increase the contact area between the heat-conducting fluid and the solid spring-loaded material plate 2, thereby increasing the heat conduction efficiency. Of course, in other embodiments, the inner wall of the sleeve 1 may only have one protrusion 11, and each solid spring clip material plate 2 may only have one groove 21.

[0026] It should be noted that the cross-sectional shape of the groove 21 and the cross-sectional shape of the protrusion 11 can be a regular shape such as a rectangle or an arc, or an irregular shape. There is no limitation here. Preferably, the groove 21 and the protrusion 11 can be designed as rectangles. The flow cavity formed in this way has a slender structure in the axial direction of the sleeve 1. On the one hand, the contact area between the heat-conducting fluid and the solid elastic card material plate 2 is large. On the other hand, due to the obstruction of the protrusion 11, the flow rate of the heat-conducting fluid is faster and the heat transfer efficiency is higher.

[0027] It should be noted that the gap between the inner wall of the sleeve 1 and the edge of the groove 21 of the solid spring material plate 2 is 0.1-5mm, specifically 0.1mm, 0.5mm, 1.0mm, 1.5mm, 2.0mm, 2.5mm, 2.55mm, 3.0mm, 3.5mm, 4.0mm, 4.5mm, 5mm, etc., preferably 0.5-1mm, specifically 0.5mm, 0.75mm, 1.0mm, etc., which ensures the minimum flow resistance and maximum flow velocity.

[0028] It should be noted that the solid spring-loaded material plate 2 expands laterally during loading, that is, it expands radially in the sleeve 1. Therefore, to ensure sufficient space for the solid spring-loaded material plate 2 during expansion, a partition is provided on the inner wall of the sleeve 1 and the surface of the protrusion 11. For example, a partition film can be coated or adhered to the inner wall of the sleeve 1. This partition film can be Teflon, POM (polyformaldehyde), nylon, polyester, or silicone. On the one hand, the partition film is soft and can play a role in containing and buffering the expansion of the solid spring-loaded material plate 2. On the other hand, the partition film has a heat insulation function, minimizing heat loss when the medium (i.e., the heat-conducting fluid) undergoes heat exchange through the flow cavity. In practical applications, Teflon and POM are preferred. For ease of assembly, a brush coating method can be used. After brushing the Teflon coating onto the inner wall of the sleeve 1, the solid spring-loaded material plate 2 is placed into the cavity of the sleeve 1, which is convenient.

[0029] Furthermore, the solid spring clip material plate 2 also includes: perforations 22, which are stacked to form a second flow cavity. In this embodiment, multiple perforations 22 are provided on each solid spring clip material plate 2. After stacking multiple solid spring clip material plates 2, the multiple perforations 22 at the same radial position are aligned, thereby forming a second flow cavity in the axial direction. In the embodiment where the perforations 22 of the solid spring clip material plate 2 contact the inner wall of the sleeve 1, the edge of the solid spring clip material plate 2 and the inner wall of the sleeve 1 form a second flow cavity. In this embodiment, the shape and number of perforations 22 are not limited. Preferably, the perforations 22 are regular or irregular shapes such as polygons, radial shapes, or circles. Polygons can be triangles, squares, rectangles, pentagons, etc.

[0030] It should be noted that the thickness of each solid spring card material plate 2 is 0.01-100mm, specifically 0.01mm, 50.005mm, 100mm, etc., preferably 0.1-10mm, specifically 0.1mm, 5.05mm, 10mm, etc., more preferably 0.15-0.3mm, specifically 0.15mm, 0.225mm, 0.3mm, etc.

[0031] In practical applications, if there are gaps between the inner wall of the sleeve 1 and the multiple solid spring clip material plates 2, slight misalignment of the solid spring clip material plates 2 may occur, making it difficult to align the perforations 22 on their surfaces and affecting the flow rate of the heat-conducting fluid in the second flow cavity. To solve this problem, this application provides an embodiment in which the outer surface of the protrusion 11 contacts the inner surface of the stacked groove 21, that is, only the protrusion 11 and the groove 21 are locked together without gaps, so that there are gaps between the inner wall of the sleeve 1 and the outer edge of the solid spring clip material plates 2, thereby limiting the misalignment of the solid spring clip material plates 2.

[0032] In a preferred embodiment, the convex surface of the protrusion 11 on the inner wall of the sleeve 1 is engaged with the concave surface of the groove 21, thereby forming a flow cavity between the inner wall of the sleeve 1 and the outer edge of the solid elastic clamping material plate 2, and a flow cavity between the side surface of the protrusion 11 and the side surface of the groove 21. This further increases the cross-sectional area of ​​the flow cavity and improves thermal conductivity.

[0033] As shown in Figures 2 and 3, this application embodiment also provides a cooling and heating device, including: the above-mentioned regenerating device 10 and a driver 20; the driver 20 includes: a power element 201, a pressure rod 202 and a pressure head 203, the power element 201 is connected to one end of the pressure rod 202, and the pressure head 203 is placed at the other end of the pressure rod 202. The power element 201 drives the pressure rod 202 to make the pressure head 203 reciprocate within the sleeve 1 to load or unload the solid spring card material plate 2.

[0034] Specifically, the power component 201 can be: a motor, a hydraulic power component, a pneumatic power component, etc.

[0035] It should be noted that the shape of the pressure head 203 is the same as the cross-sectional shape of the solid spring plate 2. In this way, when the pressure head 203 applies stress to the solid spring plate 2, it can avoid applying force to the protrusion 11 at the same time, thus increasing the energy consumption ratio of the cooling and heating device.

[0036] To increase the strength of the load, the pressure head 203 can be made of high-strength ceramic or tungsten steel. To ensure the medium flows smoothly within the flow cavity, a sealing ring is installed at the connection between the pressure rod 202 and the pressure head 203 to form a closed flow cavity and prevent medium leakage. In this embodiment, the pipeline, not shown in the figure, acts as a container for the medium flow and is connected to the heat exchange device of the equipment, allowing the medium to flow into the heat exchange device and release heat or cold.

[0037] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A regenerative device, characterized in that, include: A sleeve and a solid spring clip material plate, wherein the inner wall of the sleeve includes protrusions and multiple solid spring clip material plates are stacked inside the sleeve, each of the solid spring clip material plates includes a groove, and the space formed by the stacking of the multiple grooves is used to accommodate the protrusions of the inner wall of the sleeve. After the protrusions extend into the space formed by the stacked grooves, the gap between the inner wall of the sleeve and the outer surface of the stacked solid spring clip material plates forms a flow cavity for the flow of heat-conducting fluid.

2. The regenerative device according to claim 1, characterized in that, Each of the solid spring clip material plates has multiple grooves and one-to-one corresponding protrusions on the inner wall of the sleeve, and the edges of the grooves are serrated.

3. The regenerative device according to claim 1, characterized in that, The gap between the inner wall of the sleeve and the groove edge of the solid spring clip material plate is 0.05-10mm.

4. The regenerative device according to claim 1, characterized in that, The surface of the solid spring card material plate also includes: perforations, which are stacked to form a second flow cavity.

5. The regenerative device according to claim 1, characterized in that, The outer surface of the protrusion engages with the inner surface of the stacked groove, and the inner wall of the sleeve is provided with a partition, which is made of Teflon, POM, nylon, polyester or silicone.

6. The regenerative device according to claim 1, characterized in that, The convex surface of the protrusion engages with the concave surface of the groove, such that the remaining inner wall of the sleeve (excluding the convex surface) and the outer edge of the remaining solid elastic material plate (excluding the concave surface) form a flow cavity.

7. The refrigeration and heating device according to claim 1, characterized in that, The thickness of the solid spring clip material plate is 0.01-100mm.

8. A refrigeration and heating device, characterized in that, include: The regenerative apparatus and driver as described in any one of claims 1 to 7; The actuator includes a power element, a pressure rod, and a pressure head. The power element is connected to one end of the pressure rod, and the pressure head is located at the other end of the pressure rod. The power element drives the pressure rod to make the pressure head reciprocate within the sleeve to load or unload the solid spring plate material.

9. The refrigeration and heating device according to claim 8, characterized in that, The shape of the pressure head is the same as the shape of the solid spring plate.

10. The refrigeration and heating apparatus according to claim 8, characterized in that, The pressure head is made of ceramic or tungsten steel.

Images