CN117704671A - Low-cost magnetic refrigeration device capable of realizing direct heat exchange - Google Patents
Low-cost magnetic refrigeration device capable of realizing direct heat exchange Download PDFInfo
- Publication number
- CN117704671A CN117704671A CN202311584347.0A CN202311584347A CN117704671A CN 117704671 A CN117704671 A CN 117704671A CN 202311584347 A CN202311584347 A CN 202311584347A CN 117704671 A CN117704671 A CN 117704671A
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- Prior art keywords
- refrigeration
- side wall
- fixedly connected
- heat exchange
- direct heat
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- 238000005057 refrigeration Methods 0.000 title claims abstract description 74
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000741 silica gel Substances 0.000 claims abstract description 10
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 10
- 239000001307 helium Substances 0.000 claims abstract description 9
- 229910052734 helium Inorganic materials 0.000 claims abstract description 9
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000017525 heat dissipation Effects 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 239000003507 refrigerant Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 2
- 230000008014 freezing Effects 0.000 abstract description 4
- 238000007710 freezing Methods 0.000 abstract description 4
- 239000000696 magnetic material Substances 0.000 abstract description 2
- 230000005415 magnetization Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
The invention provides a low-cost magnetic refrigeration device capable of realizing direct heat exchange, and relates to the field of refrigeration devices. This can realize direct heat transfer's low-cost magnetic refrigeration device, which comprises a housin, the inside of casing is provided with places the structure, the inside of placing the structure is provided with heats structure and refrigeration structure, it is connected through heat conduction silica gel to heat the structure in the middle of with the refrigeration structure, the preceding lateral wall center department fixedly connected with condenser of casing, fixedly connected with two handles on the up end of condenser. Through adopting the mode of direct heat transfer, improved refrigeration efficiency and heat exchange efficiency, through being connected through heat conduction silica gel in heating structure and the refrigeration structure, can realize more quick and direct heat exchange efficiency, adopt the magnetic focus ware can realize that the magnetic field forces the focus for the temperature of helium can drop to below the freezing point in the low temperature heat pipe, realize refrigeration, through controlling the magnetization of magnetic material, realize intelligent control, improve the holistic operating efficiency of device.
Description
Technical Field
The invention relates to the technical field of refrigeration devices, in particular to a low-cost magnetic refrigeration device capable of realizing direct heat exchange.
Background
Household appliances such as refrigerators and air conditioners and refrigeration equipment are very important products in the household appliance industry. In the current refrigeration systems of these products, a conventional refrigeration method such as a compressor is generally adopted, and the refrigeration method is stable and reliable, but has the problems of high noise, high energy consumption, environmental protection and the like, so that a new, green and low energy consumption refrigeration technology is required to be required. The magnetic refrigeration technology is a novel refrigeration technology based on the magnetocaloric effect, and the magnetocaloric effect refers to the physical phenomenon of heat release or heat absorption of a magnetocaloric material when a magnetic field is enhanced or weakened. When the magnetic field magnetizes the magnetocaloric material, the magnetocaloric material becomes hot; when the magnetic field is removed, the magnetocaloric material cools. Magnetic refrigeration is the phenomenon of utilizing the magnetocaloric effect to realize the purpose of refrigeration.
The magnetic refrigeration technology is one of relatively new refrigeration technologies, adopts a magnetic field to realize refrigeration, and has the advantages of no noise, high efficiency, environmental protection and the like. However, because the device cost of the magnetic refrigeration technology is higher, the popularization and the application of the magnetic refrigeration technology in the home appliance industry are limited, because the heat and the cold of the cold storage bed are required to be taken away through fluid in time due to the specificity of the magnetic refrigeration, and generally, a relatively complex flow path is required to be connected, and the direct heat exchange cannot be realized through the flow path, so that a person skilled in the art provides a low-cost magnetic refrigeration device capable of realizing the direct heat exchange to solve the problems in the background technology.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a low-cost magnetic refrigeration device capable of realizing direct heat exchange, and solves the problems of high cost and complicated flow path in the prior device, which cause incapability of direct heat exchange.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: the utility model provides a can realize low-cost magnetic refrigeration device of direct heat transfer, includes the casing, the inside of casing is provided with places the structure, the inside of placing the structure is provided with heats structure and refrigeration structure, it is connected through heat conduction silica gel to heat the structure in the middle of with the refrigeration structure, the preceding lateral wall center department fixedly connected with condenser of casing, fixedly connected with two handles on the up end of condenser.
Preferably, the placement structure comprises a top plate, fixing bolts are respectively arranged at the upper end face center of the top plate by four opposite angles, the lower ends of the four fixing bolts respectively penetrate through the upper end face of the top plate and respectively pass through the lower ends, a temperature sensor is arranged at the upper end face center of the top plate by the front side, the lower ends of the temperature sensors penetrate through the upper end face of the top plate and pass through the lower ends, a bottom plate is arranged at the lower end of the top plate, and the upper end faces of the bottom plate are fixedly connected to the lower end faces of the heating structure and the refrigerating structure.
Preferably, the heating structure includes that the second is placed the case, the preceding lateral wall center department of case is placed to the second is provided with the storage tank, the inside slip of storage tank is provided with the pull board, the up end center of pull board leans on one side edge fixedly connected with second heat dissipation fan, is close to fixedly connected with heating device on the up end of second heat dissipation fan opposite side pull board, a plurality of fin is placed to the second one side wall center department of placing the case, and a plurality of fin's one end runs through a lateral wall of case and leads to inside respectively, the preceding lateral wall center department fixedly connected with handle of pull board is located be provided with a plurality of air vents on the preceding lateral wall of pull board of both ends about the handle respectively.
Preferably, the refrigeration structure comprises a first placement box, a second groove is arranged at the center of one side wall of the first placement box, a radiating fin is arranged on one inner side wall of the second groove, a high-temperature heat pipe is arranged in the first placement box, one end of the high-temperature heat pipe close to the lower side penetrates through one inner side wall of the first placement box and is led to the outer side, an organic refrigerant is arranged in the high-temperature heat pipe, a magnetic focusing device is arranged in the first placement box at the front side of the high-temperature heat pipe, a low-temperature heat pipe is arranged at the front side of the magnetic focusing device, the utility model discloses a low temperature heat pipe, including the low temperature heat pipe, the both ends of low temperature heat pipe are fixed connection respectively on the preceding lateral wall of magnetic focus ware, the inside of low temperature heat pipe is provided with helium, be provided with first heat dissipation fan on the lateral wall of first placing the case, one side of first heat dissipation fan runs through a lateral wall of first placing the case and lets in inside, be provided with two connecting pipes on the preceding lateral wall of first placing the case, two the rear end of connecting pipe runs through the preceding lateral wall of first placing the case respectively and lets in inside, and the other end runs through the preceding inside wall of casing respectively and lets in outside respectively, and tip and condenser fixed connection respectively.
Preferably, a first groove is formed in the center of one side wall of the shell, and one end of the heating structure penetrates through one inner side wall of the shell and is communicated with the inside of the first groove.
Preferably, a control panel is fixedly connected to the edge of the upper end, close to the center of a side wall, of the shell, and the control panel is electrically connected with the temperature sensor.
Preferably, the material of the first placement box may be one of magnetic refrigeration materials.
Preferably, the material of the second placement box may be one of magnetic refrigeration materials.
Working principle: the application is a low-cost magnetic refrigeration device capable of realizing direct heat exchange, when in use, the heating structure 9 and the refrigeration structure 7 are respectively placed in the placement structure 2, so that the heating structure 9 and the refrigeration structure 7 can be well fixed, the whole can be prevented from shaking during operation, when heating is required, the heating device 906 in the heating structure 9 is controlled by the control panel 6 to perform heating treatment, then heat is introduced into the refrigeration structure 7 through the heat conducting silica gel 8, faster transmission is realized, the temperature inside the shell 1 is monitored at any time through the temperature sensor 202, the high-temperature heat pipe 705 is a U-shaped pipe during refrigeration, the organic refrigerant 709 is filled inside, and the two ends of the high-temperature heat pipe are externally arranged in the refrigeration structure 7 and the shell 1; the low temperature heat pipe 707 is the S type pipe, fills with helium 708 in the inside, and both ends link to each other with magnetic focus ware 706 respectively, and magnetic focus ware 706 is inside to be magnetic field forced focusing structure, can reduce the temperature of helium 708 in the low temperature heat pipe 707 below the freezing point, and condenser 3 connects refrigeration structure 7, and inside arriving refrigeration structure 7 through external force circulation, accomplish refrigeration cycle process.
(III) beneficial effects
The invention provides a low-cost magnetic refrigeration device capable of realizing direct heat exchange. The beneficial effects are as follows:
1. according to the invention, the refrigeration efficiency and the heat exchange efficiency are improved by adopting a direct heat exchange mode, and the heat exchange efficiency can be realized more quickly and directly by connecting the heating structure and the refrigeration structure through the heat conducting silica gel.
2. In the invention, the magnetic field forced focusing can be realized by adopting the magnetic focusing device, so that the temperature of helium in the low-temperature heat pipe can be reduced below the freezing point, refrigeration is realized, intelligent control is realized by controlling the magnetization intensity of the magnetic material, and the overall operation efficiency of the device is improved.
3. The invention has the advantages of high refrigeration efficiency, low cost, environmental protection and the like, and can be used in the fields of refrigeration, fresh keeping and the like.
4. In the invention, the fluorine-free refrigerant is adopted by the magnetic refrigeration technology, and the ozone-layer-destroying substance is not contained, so that the invention has the advantage of green environment protection, and is lower in energy and more environment-friendly in use.
Drawings
FIG. 1 is an isometric view of the entire present invention;
FIG. 2 is an isometric view of the invention with the housing removed;
FIG. 3 is an isometric view of the heating structure of the present invention after deployment;
FIG. 4 is an isometric view of a refrigeration construction according to the present invention;
FIG. 5 is a side cross-sectional view of a refrigeration construction according to the present invention;
FIG. 6 is a schematic diagram of a low temperature heat pipe connected to a magnetic focus device according to the present invention.
1, a shell; 2. placing a structure; 201. a fixing bolt; 202. a temperature sensor; 203. a top plate; 204. a bottom plate; 3. a condenser; 4. a handle; 5. a first groove; 6. a control panel; 7. a refrigeration structure; 701. a connecting pipe; 702. a heat sink; 703. a first placement box; 704. a second groove; 705. a high temperature heat pipe; 706. a magnetic focussing device; 707. a low temperature heat pipe; 708. helium gas; 709. organic refrigerant; 710. a first heat dissipation fan; 8. thermally conductive silica gel; 9. a heating structure; 901. a heat radiation fin; 902. a vent hole; 903. a drawing plate; 904. a handle; 905. a second heat dissipation fan; 906. a heating device; 907. a storage groove; 908. and a second placement box.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
as shown in fig. 1-6, the embodiment of the invention provides a low-cost magnetic refrigeration device capable of realizing direct heat exchange, which comprises a shell 1, wherein a placement structure 2 is arranged in the shell 1, a heating structure 9 and a refrigeration structure 7 are arranged in the placement structure 2, the middle of the heating structure 9 and the refrigeration structure 7 is connected through heat-conducting silica gel 8, a condenser 3 is fixedly connected to the center of the front side wall of the shell 1, and two handles 4 are fixedly connected to the upper end surface of the condenser 3.
The placing structure 2 comprises a top plate 203, fixing bolts 201 are respectively arranged at the upper end face center of the top plate 203 near four opposite angles, the lower ends of the four fixing bolts 201 penetrate through the upper end face of the top plate 203 and are respectively communicated with the lower ends, a temperature sensor 202 is arranged at the position near the front side of the upper end face center of the top plate 203, the lower end of the temperature sensor 202 penetrates through the upper end face of the top plate 203 and is communicated with the lower end, the temperature inside the shell 1 can be monitored at any time through the temperature sensor 202, information is fed back to the control panel 6, switching between refrigeration and heating is completed, the lower end of the top plate 203 is provided with a bottom plate 204, the upper end faces of the bottom plate 204 are fixedly connected to the lower end faces of the heating structure 9 and the refrigerating structure 7, good fixing of the heating structure 9 and the refrigerating structure 7 can be achieved through placing the heating structure 9 and the refrigerating structure 7 in the placing structure 2, and shaking of the whole device can be prevented during running.
Heating structure 9 includes that the second is placed case 908, the preceding lateral wall center department of case 908 is provided with accomodates the groove 907, accomodate the inside slip of groove 907 and be provided with the pulling plate 903, the up end center of pulling plate 903 leans on one side edge department fixedly connected with second heat dissipation fan 905, fixedly connected with heating device 906 on the up end of pulling plate 903 near second heat dissipation fan 905 opposite side, the lateral wall center department of case 908 is placed to the second is provided with a plurality of fin 901, a plurality of fin 901's one end runs through a lateral wall of case 908 respectively and leads to inside respectively, the preceding lateral wall center department fixedly connected with handle 904 of pulling plate 903 is provided with a plurality of air vents 902 respectively on the preceding lateral wall of pulling plate 903 in both ends about the handle 904, when needs are heated, heat transfer is realized to the inside that is faster through the inside of heat conduction silica gel 8 leading-in refrigerating structure 9 to heat, on the contrary, the second heat dissipation fan 905 in the heating structure 9 and a plurality of fin's cooperation can realize the heat transfer to the inside fast and the inside fast, the heat transfer is realized to the inside fast, the high efficiency is avoided.
The refrigeration structure 7 comprises a first placing box 703, a second groove 704 is arranged at the center of one side wall of the first placing box 703, a radiating fin 702 is arranged on one inner side wall of the second groove 704, the radiating fin 702 is made of copper, more efficient heat conduction and transfer efficiency can be realized through being matched with heat conduction silica gel 8, a high-temperature heat pipe 705 is arranged in the first placing box 703, one end of the lower side of the high-temperature heat pipe 705 penetrates through one inner side wall of the first placing box 703 and is communicated to the outer side, a refrigerant 709 is arranged in the high-temperature heat pipe 705, a magnetic focusing device 706 is arranged in the first placing box 703 positioned at the front side of the high-temperature heat pipe 705, a low-temperature heat pipe 707 is arranged at the front side of the magnetic focusing device 706, two ends of the low-temperature heat pipe 707 are respectively fixedly connected to the front side wall of the magnetic focusing device 706, helium 708 is arranged in the low-temperature heat pipe 707, a first heat dissipation fan 710 is disposed on a side wall of the first placement box 703, one side of the first heat dissipation fan 710 penetrates through a side wall of the first placement box 703 and is led to the inside, the rotation direction of the first heat dissipation fan 710 is consistent with that of the second heat dissipation fan 905, two connecting pipes 701 are disposed on a front side wall of the first placement box 703, rear ends of the two connecting pipes 701 penetrate through the front side wall of the first placement box 703 and are led to the inside respectively, the other ends of the two connecting pipes penetrate through the front inner side wall of the shell 1 and are led to the outside respectively, the end parts of the two connecting pipes are fixedly connected with a condenser 3 respectively, a magnetic field forced focusing structure is arranged inside the magnetic focus 706, the temperature of helium 708 in the low-temperature heat pipe 707 can be reduced to below a freezing point, the condenser 3 is connected with a refrigeration structure 7, and the external force circulates to the inside the refrigeration structure 7 to complete a refrigeration cycle.
The center of a side wall of the shell 1 is provided with a first groove 5, one end of the heating structure 9 penetrates through an inner side wall of the shell 1 and is led to the inside of the first groove 5, the edge of the upper end of the side wall center of the shell 1 is fixedly connected with a control panel 6, the control panel 6 is electrically connected with the temperature sensor 202, the first placing box 703 can be made of one of magnetic refrigerating materials, the second placing box 908 can be made of one of magnetic refrigerating materials, and the magnetic refrigerating materials can be matched with the magnetic focussing 706 to realize the change of an internal magnetic field so as to finish the magnetic force generation and demagnetizing operation.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a can realize direct heat transfer's low-cost magnetic refrigeration device, includes casing (1), its characterized in that: the inside of casing (1) is provided with places structure (2), the inside of placing structure (2) is provided with heats structure (9) and refrigeration structure (7), heat structure (9) are connected through heat conduction silica gel (8) in the middle of with refrigeration structure (7), the preceding lateral wall center department fixedly connected with condenser (3) of casing (1), fixedly connected with two handles (4) on the up end of condenser (3).
2. A low cost magnetic refrigeration unit for effecting direct heat exchange as recited in claim 1 wherein: the placement structure (2) comprises a top plate (203), fixing bolts (201) are respectively arranged at the center of the upper end face of the top plate (203) close to four opposite angles, the lower ends of the four fixing bolts (201) penetrate through the upper end face of the top plate (203) respectively and are led to the lower ends respectively, a temperature sensor (202) is arranged at the position of the front side close to the center of the upper end face of the top plate (203), the lower end of the temperature sensor (202) penetrates through the upper end face of the top plate (203) and is led to the lower end, a bottom plate (204) is arranged at the lower end of the top plate (203), and the upper end faces of the bottom plate (204) are fixedly connected to the lower end faces of the heating structure (9) and the refrigerating structure (7).
3. A low cost magnetic refrigeration unit for effecting direct heat exchange as recited in claim 1 wherein: heating structure (9) are including second placing case (908), the preceding lateral wall center department of case (908) is placed to the second is provided with accomodates groove (907), the inside slip of accomodating groove (907) is provided with pull board (903), the up end center of pull board (903) leans on one side edge fixedly connected with second heat dissipation fan (905), is close to fixedly connected with heating device (906) on the up end of second heat dissipation fan (905) opposite side pull board (903), the lateral wall center department of case (908) is placed to the second is provided with a plurality of radiating fin (901), a plurality of radiating fin (901) one end runs through a lateral wall of case (908) respectively and lets go to inside respectively, the preceding lateral wall center department fixedly connected with handle (904) of pull board (903) is located on the preceding lateral wall of both ends pull board (903) are provided with a plurality of air vent (902) respectively.
4. A low cost magnetic refrigeration unit for effecting direct heat exchange as recited in claim 1 wherein: the refrigeration structure (7) comprises a first placing box (703), a second groove (704) is arranged in the center of one side wall of the first placing box (703), a radiating fin (702) is arranged on one inner side wall of the second groove (704), a high-temperature heat pipe (705) is arranged in the first placing box (703), one end of the high-temperature heat pipe (705) near the lower side penetrates through one inner side wall of the first placing box (703) and is communicated with the outer side, an organic refrigerant (709) is arranged in the first placing box (703), a magnetic focusing device (706) is arranged in the first placing box (703) at the front side of the high-temperature heat pipe (705), a low-temperature heat pipe (707) is arranged at the front side of the magnetic focusing device (706), two ends of the low-temperature heat pipe (707) are fixedly connected to the front side wall of the magnetic focusing device (706) respectively, helium gas (708) is arranged in the first placing box (703), a first radiating fan (710) is arranged on one side wall of the first placing box (703), a connecting pipe (710) penetrates through the first side wall (701) and penetrates through the front side wall (703) to the front side wall (703) respectively, the other ends of the two pipes penetrate through the front inner side wall of the shell (1) and are communicated with the outside, and the end parts of the two pipes are fixedly connected with the condenser (3).
5. A low cost magnetic refrigeration unit for effecting direct heat exchange as recited in claim 1 wherein: a first groove (5) is formed in the center of one side wall of the shell (1), and one end of the heating structure (9) penetrates through one inner side wall of the shell (1) and is communicated with the inside of the first groove (5).
6. A low cost magnetic refrigeration unit for effecting direct heat exchange as recited in claim 1 wherein: a control panel (6) is fixedly connected to the edge of the upper end, close to the center of one side wall, of the shell (1), and the control panel (6) is electrically connected with a temperature sensor (202).
7. A low cost magnetic refrigeration unit for effecting direct heat exchange as recited in claim 4 wherein: the material of the first placing box (703) can be one of magnetic refrigerating materials.
8. A low cost magnetic refrigeration unit for effecting direct heat exchange as recited in claim 3 wherein: the material of the second placement box (908) can be one of magnetic refrigeration materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311584347.0A CN117704671A (en) | 2023-11-25 | 2023-11-25 | Low-cost magnetic refrigeration device capable of realizing direct heat exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311584347.0A CN117704671A (en) | 2023-11-25 | 2023-11-25 | Low-cost magnetic refrigeration device capable of realizing direct heat exchange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117704671A true CN117704671A (en) | 2024-03-15 |
Family
ID=90145232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311584347.0A Pending CN117704671A (en) | 2023-11-25 | 2023-11-25 | Low-cost magnetic refrigeration device capable of realizing direct heat exchange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117704671A (en) |
-
2023
- 2023-11-25 CN CN202311584347.0A patent/CN117704671A/en active Pending
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