An all-solid-state refrigeration device with an interdigitated structure

Abstract

The present application relates to the technical field of refrigeration equipment, and in particular to a fully solid-state refrigeration device with a forked finger structure, including a driving mechanism, a slider, a slide rail, a transducer mechanism and a heat exchanger; the slider is slidably mounted on the slide rail; the transducer mechanism is connected to the slider; the transducer mechanism is provided with a plurality of transducer units; the driving mechanism is used to drive the slider to drive the transducer mechanism to move in forward and reverse directions; the heat exchanger is provided with a cold-end heat-conducting row and a hot-end heat-conducting row, the cold-end heat-conducting row includes a plurality of cold-end heat-conducting sheets, and the hot-end heat-conducting row includes a plurality of hot-end heat-conducting sheets; the cold-end heat-conducting row and the hot-end heat-conducting row are respectively distributed on both sides of the slide rail; the cold-end heat-conducting sheets of the cold-end heat-conducting row and the hot-end heat-conducting sheets of the hot-end heat-conducting row are staggered along the length direction of the slide rail; the adjacent cold-end heat-conducting sheets and the hot-end heat-conducting sheets form a pair and are commonly distributed between two adjacent transducer units. The present application utilizes the advantages of the forked finger structure, allowing multiple transducer units to cool simultaneously, greatly improving the cooling capacity of solid-state refrigeration.

Description

Technical Field

[0001] The present application relates to the technical field of refrigeration equipment, and in particular to an all-solid-state refrigeration device with an interdigital structure. Background Art

[0002] Refrigeration is increasingly becoming a daily need for people. In order to meet the needs of refrigeration, scientists and engineers have been exploring and improving refrigeration devices. The development of traditional compressor refrigeration technology has reached its limit, and its relative efficiency is low. As a major energy consumption, it has naturally become a problem that needs to be solved urgently. In addition, since the refrigerant used in the compressor has a very high global warming potential coefficient (GWP, such as R410A's GWP = 2208, that is, 1 kg of R410A = 2208 kg of carbon dioxide), air conditioning is considered to be the primary factor in global warming, and there is an urgent need to replace the compressor refrigeration technology.

[0003] Solid-state refrigeration technology is a technology based on solid-state phase change, which leads to entropy change. The two most efficient technologies are electric card refrigeration and magnetic card refrigeration. Considering that magnetic card refrigeration requires a large DC magnetic field, the device size is large and the cost is high. The design of electric card refrigeration devices is more flexible and the cost is lower, so electric card refrigeration technology has become an important direction of solid-state refrigeration technology.

[0004] Electrocaloric cooling is the adiabatic temperature change or isothermal entropy change caused by the change of polarization state in polar materials due to the change of external electric field. Under the appropriate electric field and temperature conditions, the material can absorb and release heat from the outside world driven by the electric field to achieve the function of cooling. However, the existing solid-state cooling devices using the electrocaloric effect have the problem of small cooling capacity, which does not meet people's requirements for refrigeration technology. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a fully solid-state refrigeration device with an interdigital structure, so as to solve the technical problem of small cooling capacity of existing solid-state refrigeration devices.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] An all-solid-state refrigeration device with an interdigital structure, comprising a driving mechanism, a slider, a slide rail, an energy conversion mechanism and a heat exchange element;

[0008] The slider is slidably mounted on the slide rail;

[0009] The transducer mechanism is connected to the slider;

[0010] A plurality of transducer units are arranged inside the transducer mechanism;

[0011] The driving mechanism is connected to the slider and is used to drive the slider to drive the transducer mechanism to move in forward and reverse directions along the slide rail;

[0012] The heat exchange element is connected to the slide rail;

[0013] The heat exchange element is provided with a cold end heat conducting row and a hot end heat conducting row, wherein the cold end heat conducting row comprises a plurality of cold end heat conducting sheets arranged in parallel, and the hot end heat conducting row comprises a plurality of hot end heat conducting sheets arranged in parallel;

[0014] The cold end heat conducting row and the hot end heat conducting row are respectively distributed on both sides of the slide rail;

[0015] The cold end heat conducting plates of the cold end heat conducting row and the hot end heat conducting plates of the hot end heat conducting row are staggeredly distributed along the length direction of the slide rail, and the ends of the cold end heat conducting plates and the hot end heat conducting plates facing each other are located on the same straight line;

[0016] The adjacent cold-end heat conducting plates and the adjacent hot-end heat conducting plates form a pair and are commonly distributed between two adjacent transducer units.

[0017] Preferably, in the above-mentioned all-solid-state refrigeration device, the cold-end heat conducting plate and the hot-end heat conducting plate are both copper plates.

[0018] Preferably, in the above-mentioned all-solid-state refrigeration device, thermal pads are installed on the contact portion between the cold-end heat conductive sheet and the energy conversion unit and the contact portion between the hot-end heat conductive sheet and the hot-end heat conductive sheet.

[0019] Preferably, in the above-mentioned all-solid-state refrigeration device, first fixing plates are provided on both sides of the slide rail;

[0020] The cold-end heat-conducting row and the hot-end heat-conducting row are respectively mounted on the two first fixing plates.

[0021] Preferably, in the above-mentioned all-solid-state refrigeration device, the first fixing plate is connected to the heat exchange element through heat-insulating screws.

[0022] Preferably, in the above-mentioned all-solid-state refrigeration device, the energy conversion mechanism comprises two second fixing plates arranged in parallel up and down;

[0023] Multiple sets of fixing clamps are provided between the two second fixing plates;

[0024] The fixing fixtures are arranged in one-to-one correspondence with the energy conversion units;

[0025] Each group of the fixing fixtures includes a corresponding upper fixture and a lower fixture;

[0026] Each of the energy conversion units is installed between the upper clamp and the lower clamp of the same group.

[0027] Preferably, in the above-mentioned all-solid-state refrigeration device, both the upper clamp and the lower clamp are provided with clamping grooves matching the energy conversion unit.

[0028] Preferably, in the above-mentioned all-solid-state refrigeration device, the fixing fixture is made of polytetrafluoroethylene.

[0029] Preferably, in the above-mentioned all-solid-state refrigeration device, the two second fixing plates are connected by a fixing column;

[0030] The second fixing plate is detachably connected to the sliding block.

[0031] Preferably, in the above-mentioned all-solid-state refrigeration device, the driving mechanism is specifically a stepping motor;

[0032] The output shaft of the stepper motor is connected with a lead screw;

[0033] The slider is threadedly sleeved on the screw rod.

[0034] Compared with the prior art, the beneficial effects of this application are:

[0035] The present application arranges the cold-end heat-conducting row and the hot-end heat-conducting row on two opposite sides respectively, and the cold-end heat-conducting sheets of the cold-end heat-conducting row and the hot-end heat-conducting sheets of the hot-end heat-conducting row are staggered along the length direction of the slide rail, so that a finger structure can be formed between the cold-end heat-conducting row and the hot-end heat-conducting row. During operation, the driving mechanism drives the slider to drive the transducer mechanism to move forward and backward along the slide rail, so that each transducer unit of the transducer mechanism can periodically exchange heat with the cold-end heat-conducting sheet or the hot-end heat-conducting sheet, thereby achieving a cooling effect. The advantages of the finger structure are utilized to allow multiple transducer units to cool simultaneously, thereby greatly improving the cooling capacity of the solid-state refrigeration, and effectively solving the technical problem of small cooling capacity of existing solid-state refrigeration devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0037] Figure 1 A schematic diagram of the structure of an all-solid-state refrigeration device with an interdigital structure provided in an embodiment of the present application;

[0038] Figure 2 A schematic structural diagram of a heat exchanger of an all-solid-state refrigeration device with an interdigital structure provided in an embodiment of the present application connected to a first fixing plate;

[0039] Figure 3 A schematic diagram of the structure of a transducer mechanism of an all-solid-state refrigeration device with an interdigital structure provided in an embodiment of the present application;

[0040] Figure 4 A schematic diagram of the structure of a driving mechanism of an all-solid-state refrigeration device with an interdigitated structure provided in an embodiment of the present application.

[0041] In the figure:

[0042] 101, slide rail; 102, slider; 103, screw rod; 104, stepping motor; 201, transducer unit; 202, fixing fixture; 203, second fixing plate; 204, fixing column; 205, connecting column; 301, heat insulation screw; 302, first fixing plate; 303, thermal pad; 304, heat exchange component. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0045] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0046] See also Figure 1-Figure 4The embodiment of the present application provides a full solid-state refrigeration device with a forked finger structure, including a driving mechanism, a slider 102, a slide rail 101, a transducer mechanism and a heat exchanger 304; the slider 102 is slidably mounted on the slide rail 101; the transducer mechanism is connected to the slider 102; a plurality of transducer units 201 are arranged inside the transducer mechanism; the driving mechanism is connected to the slider 102, and is used to drive the slider 102 to drive the transducer mechanism to move in forward and reverse directions along the slide rail 101; the heat exchanger 304 is connected to the slide rail 101; the heat exchanger 304 is provided with a cold end heat conduction The cold-end heat-conducting row comprises a plurality of cold-end heat-conducting sheets arranged in parallel, and the hot-end heat-conducting row comprises a plurality of hot-end heat-conducting sheets arranged in parallel; the cold-end heat-conducting row and the hot-end heat-conducting row are respectively distributed on both sides of the slide rail 101; the cold-end heat-conducting sheets of the cold-end heat-conducting row and the hot-end heat-conducting sheets of the hot-end heat-conducting row are staggered along the length direction of the slide rail 101, and the ends of the cold-end heat-conducting sheets and the hot-end heat-conducting sheets facing each other are located on the same straight line; the adjacent cold-end heat-conducting sheets and the adjacent hot-end heat-conducting sheets form a pair and are commonly distributed between two adjacent transducer units 201.

[0047] More specifically, the cold-end heat conducting plates of the cold-end heat conducting row and the hot-end heat conducting plates of the hot-end heat conducting row are installed in an interdigitated manner facing each other.

[0048] In this embodiment, the cold-end heat conductive row and the hot-end heat conductive row are respectively arranged on two opposite sides, and the cold-end heat conductive sheets of the cold-end heat conductive row and the hot-end heat conductive sheets of the hot-end heat conductive row are staggered along the length direction of the slide rail 101, so that a finger structure can be formed between the cold-end heat conductive row and the hot-end heat conductive row. During operation, the slider 102 is driven by the driving mechanism to drive the transducer mechanism to move forward and backward along the slide rail 101, so that each transducer unit 201 of the transducer mechanism can periodically exchange heat with the cold-end heat conductive sheet or the hot-end heat conductive sheet, thereby achieving a cooling effect. The advantages of the finger structure are utilized to allow multiple transducer units 201 to cool simultaneously, thereby greatly improving the cooling capacity of the solid-state refrigeration and effectively solving the technical problem of small cooling capacity of existing solid-state refrigeration devices.

[0049] Furthermore, in this embodiment, the cold end heat conducting sheet and the hot end heat conducting sheet are both copper sheets, which have good thermal conductivity and are beneficial to improving the heat exchange efficiency of the device.

[0050] Furthermore, in this embodiment, the contact part between the cold end heat conducting sheet and the energy conversion unit 201 and the contact part between the hot end heat conducting sheet and the hot end heat conducting sheet are both provided with a heat conducting pad 303. The provision of the heat conducting pad 303 can not only improve the heat conduction efficiency, but also play a role in buffering the contact, so as to effectively protect the cold end heat conducting sheet and the hot end heat conducting sheet.

[0051] Furthermore, in this embodiment, first fixing plates 302 are provided on both sides of the slide rail 101; the cold end heat conducting row and the hot end heat conducting row are respectively mounted on the two first fixing plates 302. The first fixing plates 302 can be used as carriers for mounting the cold end heat conducting row and the hot end heat conducting row on the slide rail 101, and the first fixing plates 302 are preferably made of aluminum alloy, which can effectively reduce weight.

[0052] More specifically, the first fixing plate 302 is detachably connected to the cold-end heat conductive row or the hot-end heat conductive row by screws, and an elliptical hole is designed at the connection between the first fixing plate 302 and the cold-end heat conductive row or the hot-end heat conductive row to facilitate adjustment of the contact height between the cold-end heat conductive row or the hot-end heat conductive row and the transducer unit 201.

[0053] Furthermore, in this embodiment, the first fixing plate 302 is connected to the heat exchanger 304 through the heat insulation screws 301, that is, the cold end heat conduction bar and the hot end heat conduction bar are connected to the corresponding first fixing plate 302 through the heat insulation screws 301. The heat insulation screws 301 not only meet the requirement of detachable connection between the first fixing plate 302 and the heat exchanger 304, but also can provide heat insulation protection for the first fixing plate 302 to prevent heat dissipation on the cold end heat conduction bar and the hot end heat conduction bar.

[0054] Furthermore, in this embodiment, the transducer mechanism includes two second fixing plates 203 arranged in parallel up and down; multiple groups of fixing clamps 202 are arranged between the two second fixing plates 203; the fixing clamps 202 are arranged in one-to-one correspondence with the transducer units 201; each group of fixing clamps 202 includes a corresponding upper clamp and a lower clamp; each transducer unit 201 is respectively installed between the upper clamp and the lower clamp of the same group. The two second fixing plates 203 and multiple groups of fixing clamps 202 can provide a stable and reliable installation environment for each transducer unit 201, so that each transducer unit 201 can accurately and periodically contact and exchange heat with the cold end heat conducting sheet or the hot end heat conducting sheet, thereby achieving a cooling effect.

[0055] More specifically, the second fixing plate 203 is made of aluminum alloy material to ensure its structural strength so as to provide a stable installation carrier for the transducer unit 201; the fixing fixture 202 is connected to the second fixing plate 203 by bolts and nuts, and the height position of the transducer unit 201 can be conveniently adjusted by the bolts and nuts.

[0056] Furthermore, in this embodiment, both the upper clamp and the lower clamp are provided with clamping grooves matching the transducer unit 201. The clamping groove is specifically a V-shaped groove, and the V-shaped groove of the upper clamp and the V-shaped groove of the lower clamp can be used to clamp the transducer unit 201 together to ensure that the transducer unit 201 is in a stable environment for operation.

[0057] Furthermore, in this embodiment, the fixing fixture 202 is specifically made of polytetrafluoroethylene. Polytetrafluoroethylene material has the property of low thermal conductivity, which can effectively isolate the heat dissipation of the energy conversion unit 201.

[0058] Furthermore, in this embodiment, the two second fixing plates 203 are connected by a fixing column 204; the second fixing plates 203 are detachably connected to the slider 102 by a connecting column 205. The fixing column 204 can strengthen the connection between the two second fixing plates 203; the connecting column 205 can be connected to the slider 102 by bolts and nuts to meet the requirement of adjusting the height position of the entire transducer mechanism.

[0059] Further, in this embodiment, the driving mechanism is specifically a stepper motor 104; the output shaft of the stepper motor 104 is connected to a screw rod 103; and the slider 102 is threadedly sleeved on the screw rod 103. The stepper motor 104, the slide rail 101, the slider 102 and the screw rod 103 together form a linear motion device, and the use of the screw rod 103 to drive can effectively control the moving distance of the slider 102; the stepper motor 104 is specifically a forward and reverse motor, and the external electronic controller controls the operation of the stepper motor 104 to drive the slider 102 to drive the transducer mechanism to move forward and reverse along the slide rail 101, so that each transducer unit 201 of the transducer mechanism can periodically exchange heat with the cold end heat conducting plate or the hot end heat conducting plate.

[0060] The all-solid-state refrigeration device with an interdigital structure provided in this embodiment has six working states during operation, including:

[0061] (1) State 1: The odd-numbered transducer units 201, such as the 1st, 3rd, 5th, 7th, 9th, 11th, etc., release heat and the temperature rises; the even-numbered transducer units 201, such as the 2nd, 4th, 6th, 8th, 10th, etc., absorb heat and the temperature drops;

[0062] (2) State 2: The external electronic controller controls the stepper motor 104 to move the slider 1021, and moves the odd-numbered transducer units 201 whose temperatures have risen, such as the 1st, 3rd, 5th, 7th, 9th, 11th, to the hot end heat conducting sheet in the heat exchanger 304, and contacts and transfers heat with the hot end heat conducting sheet through the heat conducting pad 303, so that the heat is fully transferred to the hot end; moves the even-numbered transducer units 201 whose temperatures have dropped, such as the 2nd, 4th, 6th, 8th, 10th, to the cold end heat conducting sheet in the heat exchanger 304, and contacts and transfers heat with the cold end heat conducting sheet through the heat conducting pad 303, so that the heat is fully absorbed from the cold end;

[0063] (3) State 3: The external electronic controller controls the stepping motor 104 to move the slider 102 to separate the 1st, 3rd, 5th, 7th, 9th, 11th, etc. odd-numbered transducer units 201 from the hot-end heat conducting plates in the heat exchange element 304, and to separate the 2nd, 4th, 6th, 8th, 10th, etc. even-numbered transducer units 201 from the cold-end heat conducting plates in the heat exchange element 304;

[0064] (4) State 4: the odd-numbered transducer units 201, such as the 1st, 3rd, 5th, 7th, 9th, 11th, etc., absorb heat and the temperature decreases; the even-numbered transducer units 201, such as the 2nd, 4th, 6th, 8th, 10th, etc., release heat and the temperature increases;

[0065] (5) State 5: The external electronic controller controls the stepper motor 104 to move the slider 102, and moves the 1st, 3rd, 5th, 7th, 9th, 11th odd-numbered transducer units 201, whose temperatures have dropped, to the cold-end heat conducting sheet in the heat exchanger 304, and contacts and transfers heat with the cold-end heat conducting sheet through the heat conducting pad 303, thereby fully absorbing heat from the cold end; moves the 2nd, 4th, 6th, 8th, 10th even-numbered transducer units 201, whose temperatures have dropped, to the hot-end heat conducting sheet in the heat exchanger 304, and contacts and transfers heat with the hot-end heat conducting sheet through the heat conducting pad 303, thereby fully transferring heat to the hot end;

[0066] (6) State 6: the external electronic controller controls the stepping motor 104 to move the slider 102 to separate the 1st, 3rd, 5th, 7th, 9th, 11th, etc. odd-numbered transducer units 201 from the cold-end heat conducting plates in the heat exchange element 304, and to separate the 2nd, 4th, 6th, 8th, 10th, etc. even-numbered transducer units 201 from the hot-end heat conducting plates in the heat exchange element 304;

[0067] (7) The six working states are continuously cycled, and the energy conversion unit 201 periodically exchanges heat with the cold and hot ends, so that the cold end heat conducting plate in the heat exchange element 304 becomes colder and the hot end heat conducting plate in the heat exchange element 304 becomes hotter, thereby achieving a cooling effect.

[0068] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0069] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An all-solid-state refrigeration device with an interdigital structure, It is characterized in that It includes a driving mechanism, a slider, a slide rail, an energy conversion mechanism and a heat exchange component; The slider is slidably mounted on the slide rail; The transducer mechanism is connected to the slider; A plurality of transducer units are arranged inside the transducer mechanism; The driving mechanism is connected to the slider and is used to drive the slider to drive the transducer mechanism to move in forward and reverse directions along the slide rail; The heat exchange element is connected to the slide rail; The heat exchange element is provided with a cold end heat conducting row and a hot end heat conducting row, wherein the cold end heat conducting row comprises a plurality of cold end heat conducting sheets arranged in parallel, and the hot end heat conducting row comprises a plurality of hot end heat conducting sheets arranged in parallel; The cold end heat conducting row and the hot end heat conducting row are respectively distributed on both sides of the slide rail; The cold end heat conducting plates of the cold end heat conducting row and the hot end heat conducting plates of the hot end heat conducting row are staggeredly distributed along the length direction of the slide rail, and the ends of the cold end heat conducting plates and the hot end heat conducting plates facing each other are located on the same straight line; The adjacent cold-end heat conducting plates and the adjacent hot-end heat conducting plates form a pair and are commonly distributed between two adjacent transducer units.

2. The all-solid-state refrigeration device according to claim 1, It is characterized in that The cold end heat conducting sheet and the hot end heat conducting sheet are both copper sheets.

3. The all-solid-state refrigeration device according to claim 1, It is characterized in that Thermal pads are installed on the contact parts between the cold end heat conducting sheet and the energy conversion unit and the contact parts between the hot end heat conducting sheets and the hot end heat conducting sheets.

4. The all-solid-state refrigeration device according to claim 1, It is characterized in that A first fixing plate is provided on both sides of the slide rail; The cold-end heat-conducting row and the hot-end heat-conducting row are respectively mounted on the two first fixing plates.

5. The all-solid-state refrigeration device according to claim 4, It is characterized in that The first fixing plate is connected to the heat exchange element via heat-insulating screws.

6. The all-solid-state refrigeration device according to claim 1, It is characterized in that The energy conversion mechanism comprises two second fixing plates arranged in parallel up and down; Multiple sets of fixing clamps are provided between the two second fixing plates; The fixing fixtures are arranged in one-to-one correspondence with the energy conversion units; Each group of the fixing fixtures includes a corresponding upper fixture and a lower fixture; Each of the energy conversion units is installed between the upper clamp and the lower clamp of the same group.

7. The all-solid-state refrigeration device according to claim 6, It is characterized in that The upper clamp and the lower clamp are both provided with clamping grooves matching the energy conversion unit.

8. The all-solid-state refrigeration device according to claim 6, It is characterized in that The fixing fixture is specifically made of polytetrafluoroethylene.

9. The all-solid-state refrigeration device according to claim 6, It is characterized in that The two second fixing plates are connected via fixing columns; The second fixing plate is detachably connected to the sliding block.

10. The all-solid-state refrigeration device according to any one of claims 1 to 9, It is characterized in that The driving mechanism is specifically a stepping motor; The output shaft of the stepper motor is connected with a lead screw; The slider is threadedly sleeved on the screw rod.

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