CN216347339U - Flexible and efficient freezing and thawing device - Google Patents
Flexible and efficient freezing and thawing device Download PDFInfo
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- CN216347339U CN216347339U CN202123021907.0U CN202123021907U CN216347339U CN 216347339 U CN216347339 U CN 216347339U CN 202123021907 U CN202123021907 U CN 202123021907U CN 216347339 U CN216347339 U CN 216347339U
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Abstract
The utility model relates to a flexible and efficient freezing and thawing device which comprises a freezing and thawing chamber, wherein a plurality of layers of heat exchange plates are arranged in the freezing and thawing chamber, cavities are formed in the heat exchange plates, the cavities are connected with a refrigerating and thawing mechanism, the heat exchange plates comprise porous heat exchange plates, and a plurality of air holes communicated with the cavities are formed in the surfaces of the porous heat exchange plates; the refrigerating and re-melting mechanism comprises a refrigerator and a medium distributor which are connected, a heater and a circulating pump are arranged between the refrigerator and the medium distributor, a storage cavity is formed in the medium distributor, a plurality of distribution pipelines communicated with the storage cavity are arranged on the medium distributor, each distribution pipeline is communicated with a cavity of a porous heat exchange plate, and the refrigerating and re-melting chamber is connected with the refrigerator through a first circulating pipe. The heater is arranged, so that the frozen articles can be heated and re-melted when being taken and used as required, and the uniformity of refrigeration and re-melting is ensured.
Description
Technical Field
The utility model relates to the technical field of refrigeration, in particular to a flexible and efficient refrigeration re-melting device.
Background
Many biological products, foods, chemicals are stored frozen to maintain their product function and extend their useful life. In the market, an ultra-low temperature refrigerator is usually directly used as a refrigerating device, and a program cooling instrument device is also used, but the devices do not have the heating and thawing functions. Program-cooled instruments are usually cooled by liquid nitrogen or a compressor, and a fan is arranged in a freezing chamber to promote cold air circulation and accelerate cooling of articles. However, the problems of nonuniform temperature distribution in the chamber and inconsistent cooling rates of articles at different positions exist in the freezing process, so that the quality of the same batch of products after being frozen is different, and the quality control and evaluation challenges are caused. There is also a risk of injury to the operator from the liquid nitrogen in the manner in which the liquid nitrogen is passed directly into the freezing chamber. The direct introduction of heat transfer medium into the freezing chamber also presents the problem of high energy consumption.
There are also devices in the market which adopt multi-layer flat plate contact type heat transfer and refrigerate and heat by circulating silicon oil in the flat plate, although the temperature distribution uniformity is improved by the flat plate heat transfer, the devices require that the product to be frozen and re-melted is in good contact with the flat plate device, otherwise, the heat transfer efficiency is very poor, and the devices cannot adapt to diversified freezing containers and sizes. At the same time, the circulating silicone oil also presents the risk of leaks in the chamber and contamination of the product.
CN201822204088.5 discloses an independent refrigerating unit of refrigerator car with uniform heat dissipation, a plurality of air holes are arranged on a fixing plate at the bottom of the refrigerator, and cold air is sprayed out from the air holes to refrigerate objects placed on the fixing plate. The refrigeration mode improves the uniformity of refrigeration to a certain extent, but the equipment does not have the function of re-melting.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a flexible and efficient freezing and re-melting device, which has a re-melting function while ensuring the refrigeration uniformity and meets the re-melting requirement of partial frozen articles.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a flexible and efficient freezing and re-melting device comprises a freezing and re-melting chamber, wherein a plurality of layers of heat exchange plates are arranged in the freezing and re-melting chamber, a cavity is arranged inside each heat exchange plate, the cavity is connected with a refrigerating and re-melting mechanism,
the heat exchange plate comprises a porous heat exchange plate, and a plurality of air holes communicated with the cavity are formed in the surface of the porous heat exchange plate;
the refrigerating and re-melting mechanism comprises a refrigerator and a medium distributor which are connected, a heater and a circulating pump are arranged between the refrigerator and the medium distributor, a storage cavity is formed in the medium distributor, a plurality of distribution pipelines communicated with the storage cavity are arranged on the medium distributor, each distribution pipeline is communicated with a cavity of a porous heat exchange plate, and the refrigerating and re-melting chamber is connected with the refrigerator through a first circulating pipe.
Furthermore, the heat exchange plates also comprise imperforate heat exchange plates, the imperforate heat exchange plates are detachably mounted in the freezing re-melting chamber, each imperforate heat exchange plate is connected with a distribution pipeline, and a cavity of each imperforate heat exchange plate is connected with the refrigerator through a second circulating pipe.
Furthermore, the non-porous heat exchange plate is arranged in the freezing re-melting chamber through a height adjusting mechanism.
Furthermore, the non-porous heat exchange plate is detachably arranged in the freezing and re-melting chamber.
Furthermore, the porous heat exchange plate is detachably arranged in the freezing and re-melting chamber through a height adjusting mechanism.
Furthermore, a movable support is arranged in the freezing and thawing chamber, and the heat exchange plate is arranged on the movable support.
Furthermore, a first temperature sensor is arranged in the freezing and re-melting chamber, a second temperature sensor is arranged on the side wall of the porous heat exchange plate, and a third temperature sensor is arranged on the first circulating pipe.
Further, the air holes of the porous heat exchange plate are arranged on the upper surface of the porous heat exchange plate.
Further, the air holes of the porous heat exchange plate are arranged on the lower surface of the porous heat exchange plate.
Furthermore, the upper surface and the lower surface of the porous heat exchange plate are both provided with air holes.
The utility model has the beneficial effects that: 1. through setting up the heater, can heat the remelting to freezing article when taking as required. 2. A plurality of air holes evenly arranged on the porous heat exchange plate can evenly spray cold air, and the cold air can be evenly distributed around the freezing bottle, so that the freezing bottle can be evenly refrigerated.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a schematic diagram of freezing and thawing of a multi-hole heat exchange plate with air holes on the upper surface;
FIG. 3 is a schematic view of a multi-hole heat exchange plate with air holes on the lower surface;
FIG. 4 is a schematic diagram of freezing and thawing of a multi-hole heat exchange plate with air holes on both the upper and lower surfaces;
FIG. 5 is a schematic view of freeze remelting of a non-porous heat exchange plate;
FIG. 6 is a schematic view of a bag of liquid frozen for reconstitution;
reference numerals: 1-freezing and re-melting chamber; 2-heat exchange plate; 3, moving the bracket; 4-a medium distributor; 5-a circulating pump; 6, a refrigerator; 7-a heater; 8-a third temperature sensor; 9-a second temperature sensor; 10-a first temperature sensor; 11-a freezing bottle; 12-freezing and storing the box; 13-a bag body; 14-a distribution pipe; 15-a second circulation pipe; 16-first circulation pipe.
Detailed Description
The utility model is further illustrated with reference to the following figures and examples.
As shown in fig. 1 to 6, the flexible and efficient freezing and re-melting device of the present invention comprises a freezing and re-melting chamber 1, wherein the freezing and re-melting chamber 1 is provided with a side door to facilitate the taking and placing of articles, and the freezing and re-melting chamber 1 is covered with a heat insulation layer to reduce energy consumption. A plurality of layers of heat exchange plates 2 are arranged in the freezing and re-melting chamber 1, and cavities are formed in the heat exchange plates 2.
The heat exchange plate 2 comprises a porous heat exchange plate and a non-porous heat exchange plate, a plurality of air holes communicated with the cavity are formed in the surface of the porous heat exchange plate, the air holes are uniformly distributed, the uniformity of air outlet is guaranteed, the non-porous heat exchange plate is a plate without the air holes, and refrigeration is performed in a heat exchange mode.
The porous heat exchange plate and the non-porous heat exchange plate can be detachably arranged in the freezing re-melting chamber 1, the heat exchange plate 2 can be replaced according to a container for storing frozen articles, if the porous heat exchange plate and the non-porous heat exchange plate can be completely adopted, or the non-porous heat exchange plate and the porous heat exchange plate can be simultaneously adopted, so that the mass freezing of articles in various sizes and shapes can be realized, the articles in various sizes and shapes can be simultaneously frozen, the use is very flexible, and the application range is wide.
In addition, the porous heat exchange plates and the non-porous heat exchange plates are arranged in the freezing re-melting chamber 1 through the height adjusting mechanism, so that the number, the distance and the like of the porous heat exchange plates and the non-porous heat exchange plates can be adjusted, and when the height of an article is smaller, the number of the porous heat exchange plates or the non-porous heat exchange plates can be increased, so that more articles can be frozen or re-melted at the same time; when the size of the article is larger, the number of the porous heat exchange plates or the non-porous heat exchange plates can be reduced, so that the distance between two adjacent heat exchange plates 2 is increased. In addition, the height-adjustable of sclausura heat transfer board for place the shape for the freezing box 12 of regular cuboid form, can make the upper surface of freezing box 12 and the sclausura heat transfer board laminating of top through the height of adjusting sclausura heat transfer board, thereby guarantee to freeze the top and the bottom of depositing box 12 and evenly release heat the refrigeration.
The refrigerating and re-melting mechanism comprises a refrigerator 6 and a medium distributor 4 which are connected, a heater 7 and a circulating pump 5 are arranged between the refrigerator 6 and the medium distributor 4, a storage cavity is arranged in the medium distributor 4, a plurality of distribution pipelines 14 communicated with the storage cavity are arranged on the medium distributor 4, each distribution pipeline 14 is communicated with a cavity of a porous heat exchange plate or a non-porous heat exchange plate, the refrigerating and re-melting chamber 1 is connected with the refrigerator 6 through a first circulating pipe 16, and the cavity of the non-porous heat exchange plate is connected with the refrigerator 6 through a second circulating pipe 15.
The refrigerator 6 is used for refrigerating, can adopt existing refrigeration equipment such as a compressor and the like, preferably adopts a heat exchanger, and the heat exchanger can enable heat exchange media to exchange heat with external refrigerants so as to replace a scheme of directly introducing refrigerants such as liquid nitrogen into the freezing re-melting chamber 1, eliminate the risk of injury of the refrigerants such as the liquid nitrogen to workers and simultaneously reduce energy consumption.
Medium distributor 4 has certain memory function, vertical setting, can be the pipeline, be used for letting in each distribution pipe 14 with the heat transfer medium dispersion simultaneously, distribution pipe 14 can adopt the hose, certain elasticity can have, lateral wall at porous heat transfer board and sclausura heat transfer board sets up quick detach joint, so that can pull down distribution pipe 14 from porous heat transfer board or sclausura heat transfer board fast when porous heat transfer board of dismouting and sclausura heat transfer board, and can connect distribution pipe 14 on porous heat transfer board or sclausura heat transfer board fast.
And the circulating pump 5 is used for driving the heat exchange medium to circularly flow so as to realize circulating refrigeration. The heater 7 is a common heating device, when re-melting is needed, the refrigerant can be stopped from being introduced into the heat exchanger, the heater 7 is started, and the heat exchange medium is heated by the heater 7, so that the articles are heated. The first circulation pipe 16 and the second circulation pipe 15 are used to re-feed the heat exchange medium to the heat exchanger to ensure the circulation flow of the heat exchange medium. The second circulating pipe 15 can adopt a hose and has certain telescopic performance, and a quick-release connector is arranged on the side wall of the imperforate heat exchange plate, so that the second circulating pipe 15 can be quickly detached when the imperforate heat exchange plate is detached, and the second circulating pipe 15 can be quickly connected to the imperforate heat exchange plate.
The heat exchange medium can be harmless gas such as air, and when the heat exchange plates 2 are all non-porous heat exchange plates and are not porous, the heat exchange medium can be gas such as air, and can also be liquid such as water, ethanol and the like. When the heat exchange plate 2 is a porous heat exchange plate, or a part of the heat exchange plate, the heat exchange medium is gas, preferably air.
The porous heat exchange plate and the non-porous heat exchange plate can be directly arranged on the inner side wall of the freezing re-melting chamber 1, in order to facilitate the disassembly and the assembly of the porous heat exchange plate and the non-porous heat exchange plate and the taking and the placing of articles, a movable support 3 is arranged in the freezing re-melting chamber 1, and both the porous heat exchange plate and the non-porous heat exchange plate can be detachably arranged on the movable support 3. The bottom of moving movable support 3 is provided with the gyro wheel, can promote moving movable support 3 moving as a whole, when dismouting heat transfer board 2 perhaps gets to put article, can promote moving movable support 3 to freeze and melt room 1 outside again, operates again, guarantees sufficient operating space, can improve operating efficiency.
In order to adjust the height of the porous heat exchange plate and the non-porous heat exchange plate conveniently, the movable support 3 can be provided with a plurality of vertical screw rods, a plurality of sleeves in sliding fit with the screw rods are arranged on the screw rods, the lower part of each sleeve is arranged on a support nut in threaded fit with the screw rods, the porous heat exchange plate and the non-porous heat exchange plate are detachably mounted on the sleeves, the sleeves are supported by the support nuts, and the support nuts and the sleeves form a height adjusting mechanism. The heights of the sleeve, the porous heat exchange plate and the non-porous heat exchange plate can be adjusted by rotating the supporting nut. The porous heat exchange plate and the non-porous heat exchange plate can be arranged on the sleeve through bolts, and can also be arranged through pins, pin shafts and the like.
A first temperature sensor 10 is arranged in the freezing and re-melting chamber 1, second temperature sensors 9 are arranged on the side walls of the porous heat exchange plate and the non-porous heat exchange plate, and third temperature sensors 8 are arranged on the first circulating pipe 16 and the second circulating pipe 15. The first temperature sensor 10, the second temperature sensor 9 and the third temperature sensor 8 respectively detect the temperatures of different parts, the flow of the refrigerant, the rotating speed of the circulating pump 5, the power of the heater 7 and the like are adjusted according to detection results, indexes such as freezing temperature, cooling or heating rate and the like can be accurately controlled, and the controllability of the whole freezing or re-melting process is realized.
The porous heat exchange plate has various forms, one is that the air holes are arranged on the upper surface of the porous heat exchange plate, as shown in fig. 2; secondly, the air holes are arranged on the lower surface of the porous heat exchange plate, as shown in figure 3; and thirdly, air holes are arranged on the upper surface and the lower surface of the base plate, as shown in figure 4. Selecting a proper porous heat exchange plate according to the specific size of the article packaging container, for example, when the packaging container is a freezing bottle 11 with a small height, the porous heat exchange plate with the air holes arranged on the upper surface can be adopted, and the heat exchange medium is uniformly sprayed upwards, or the porous heat exchange plate with the air holes arranged on the lower surface can be adopted, and the heat exchange medium is uniformly sprayed downwards; when the packaging container is a freezing bottle 11 with a large height, a porous heat exchange plate with air holes formed in the upper surface and the lower surface can be adopted, and a heat exchange medium is sprayed out in the upper direction and the lower direction simultaneously, so that the upper portion and the lower portion of the freezing bottle 11 are uniformly surrounded by the heat exchange medium, and the uniformity of refrigeration or heating is ensured.
The freezing and re-melting method of the flexible and efficient freezing and re-melting device comprises the following steps:
when the articles are packed in the freezing bottle 11, the freezing bottle 11 includes all the existing bottles with various shapes and materials, and a porous heat exchange plate is adopted for refrigeration. Specifically, a freezing bottle 11 is placed on a porous heat exchange plate, then a refrigerant is driven to continuously flow through the heat exchanger, meanwhile, a circulating pump 5 is started to drive gas to circularly flow, heat is released when the gas flows through the heat exchanger to form cold air, the cold air enters a cavity of the porous heat exchange plate through a medium distributor 4 and a distribution pipeline 14, the bottom of the freezing bottle 11 is refrigerated through heat exchange and is sprayed out of each air hole to refrigerate the bottle body of the freezing bottle 11, and the gas in the freezing re-melting chamber 1 flows to the heat exchanger through a first circulating pipe 16 to realize circulation. When the bottle body is re-melted, the flow of the refrigerant is stopped, the heater 7 is started at the same time, the heater 7 heats the gas into hot gas, the hot gas enters the porous heat exchange plate, the bottom of the freezing bottle 11 is heated through heat exchange, and meanwhile, the hot gas is sprayed out from each air hole to heat the bottle body of the freezing bottle 11. In the process of re-melting, the sample can be oscillated by the reciprocating motion of the movable support 3 to accelerate the re-melting. One or more porous heat exchanger plates as in fig. 2, 3 and 4 are selected according to the size of the cryo-vial 11. When the height of the freezing bottle 11 is large, a porous heat exchange plate with air holes on the upper surface and the lower surface is adopted, and cold air is sprayed out from the upper surface and the lower surface of the porous heat exchange plate simultaneously to uniformly refrigerate the upper part and the lower part of the freezing bottle 11.
When the articles are packaged by the freezing storage box 12 with the upper surface and the lower surface being the plane, the freezing storage box 12 can be in a cuboid shape or a cylindrical shape, or can be a box body with the upper surface and the lower surface being in various lower heights such as an oval shape, a heart shape and the like, the freezing storage box 12 is placed on the heat exchange plate without holes, as shown in fig. 5, the distance between two adjacent heat exchange plates without holes is adjusted, so that the upper surface of the freezing storage box 12 is attached to the heat exchange plate without holes above; then, the refrigerant is driven to continuously flow through the heat exchanger, meanwhile, the circulating pump 5 is started, the heat exchange medium is driven to circularly flow, heat is released to become a cold medium when the heat exchange medium flows through the heat exchanger, the cold medium enters the cavity of the imperforate heat exchange plate through the medium distributor 4 and the distribution pipeline 14, the freezing storage box 12 is refrigerated in a heat exchange mode, and the heat exchange medium in the imperforate heat exchange plate flows to the heat exchanger through the second circulating pipe 15, so that circulation is achieved. When the re-melting is carried out, the flow to the refrigerant is stopped, the heater 7 is started, and the sample can be oscillated by the reciprocating motion of the movable support 3 in the re-melting process to accelerate the re-melting.
Generally, since the height of the freezing cylinder 11 is larger than the diameter, the upper portion is small and the bottom portion is large, the uniformity of cooling or heating can be ensured by heat exchange at the bottom portion and by blowing heat exchange gas around the bottom portion. The box type container is generally large in upper and lower area and small in height, if a bottom heat exchange mode and a peripheral heat exchange gas spraying mode are adopted, the part with the large top area cannot be cooled or heated in time, so that the cooling or heating is not uniform, therefore, for the freezing and storing box 12, the upper surface and the lower surface are used for cooling or heating in a simultaneous heat exchange mode, the heat exchange area is large, the cooling or heating efficiency is improved, the cooling or heating speed of the upper part and the cooling or heating speed of the lower part are consistent, and the overall cooling or heating speed is also uniform due to the fact that the height of the box type container is low.
When article adopt flexible bag body 13 to pack, if directly put bag body 13 on porous heat transfer board or sclausura heat transfer board, because bag body 13 is flexible, does not have fixed shape, can lead to the thickness of the inside liquid of bag body 13 of different horizontal positions to be different, and the cooling or the rate of rise of temperature of the center department of different thickness positions are different, are difficult to guarantee the even cooling or the intensification of different thickness positions promptly. Therefore, when the liquid packaged in the bag body 13 is frozen, the bag body 13 is firstly placed in the cryopreservation box 12, if the cryopreservation box 12 is horizontally placed, the upper surface of the bag body 13 is difficult to completely adhere to the top plate of the cryopreservation box 12, and the uniformity of refrigeration or heating can also be influenced, therefore, the non-porous heat exchange plate is obliquely installed, and then the cryopreservation box 12 is placed on the oblique non-porous heat exchange plate, so that the cryopreservation box 12 is also in an oblique state, the liquid in the bag body 13 is filled in the lower space of the bag body 13 under the action of gravity and extrudes the bag body 13, the state is shown in fig. 6, the upper surface and the lower surface of the bag body 13 are respectively and tightly adhered to the top plate and the bottom plate of the cryopreservation box 12, so that the uniform heat exchange of the upper surface and the lower surface of the bag body 13 can be realized, the liquid thickness of most positions is kept consistent, and the temperature reduction or temperature rise rate can be kept consistent. Then adjusting the distance between two adjacent imperforate heat exchange plates to ensure that the upper surface of the cryopreservation box 12 is attached to the upper imperforate heat exchange plate; then, the refrigerant is driven to continuously flow through the heat exchanger, meanwhile, the circulating pump 5 is started, the heat exchange medium is driven to circularly flow, heat is released to become a cold medium when the heat exchange medium flows through the heat exchanger, the cold medium enters the cavity of the imperforate heat exchange plate through the medium distributor 4 and the distribution pipeline 14, the freezing storage box 12 is refrigerated in a heat exchange mode, and the heat exchange medium in the imperforate heat exchange plate flows to the heat exchanger through the second circulating pipe 15, so that circulation is achieved. When the re-melting is carried out, the flow to the refrigerant is stopped, the heater 7 is started, and the sample can be oscillated by the reciprocating motion of the movable support 3 in the re-melting process to accelerate the re-melting.
In summary, the present invention can perform batch freezing and thawing on the articles packed in the certain bag 13, the freezing bottle 11 or the freezing box 12, or perform mixed freezing and thawing on the bag 13, the freezing bottle 11 or the freezing box 12, and can adjust the height and the number of the porous heat exchange plate and the non-porous heat exchange plate according to the height of the articles, so the present invention has the advantages of flexible use, strong applicability, and wide application range, and different freezing and thawing methods are adopted according to the characteristics of the bag 13, the freezing bottle 11 and the freezing box 12, so the uniformity of heat exchange of the bag 13, the freezing bottle 11 and the freezing box 12 is strongly ensured.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. Nimble efficient freezing device of melting again, including freezing room (1) of melting again, freezing is provided with multilayer heat transfer board (2) in melting room (1) again, and heat transfer board (2) inside has a cavity, the cavity connection has the refrigeration to melt mechanism, its characterized in that again:
the heat exchange plate (2) comprises a porous heat exchange plate, and a plurality of air holes communicated with the cavity are formed in the surface of the porous heat exchange plate;
the refrigerating and re-melting mechanism comprises a refrigerator (6) and a medium distributor (4) which are connected, a heater (7) and a circulating pump (5) are arranged between the refrigerator (6) and the medium distributor (4), a storage cavity is formed in the medium distributor (4), a plurality of distribution pipelines (14) communicated with the storage cavity are arranged on the medium distributor (4), each distribution pipeline (14) is communicated with a cavity of a porous heat exchange plate, and the refrigerating and re-melting chamber (1) is connected with the refrigerator (6) through a first circulating pipe (16).
2. The flexible and efficient freeze thawing apparatus of claim 1, further comprising: the heat exchange plates (2) further comprise imperforate heat exchange plates, the imperforate heat exchange plates are detachably mounted in the freezing re-melting chamber (1), each imperforate heat exchange plate is connected with a distribution pipeline (14), and a cavity of each imperforate heat exchange plate is connected with the refrigerator (6) through a second circulating pipe (15).
3. The flexible and efficient freeze thawing apparatus of claim 2, further comprising: the non-porous heat exchange plate is arranged in the freezing re-melting chamber (1) through a height adjusting mechanism.
4. The flexible and efficient freeze thawing apparatus of claim 2 or 3, further comprising: the non-porous heat exchange plate is detachably arranged in the freezing re-melting chamber (1).
5. The flexible and efficient freeze thawing apparatus of claim 1, further comprising: the porous heat exchange plate is detachably arranged in the freezing and re-melting chamber (1) through a height adjusting mechanism.
6. The flexible and efficient freeze thawing apparatus of claim 1, further comprising: a movable support (3) is arranged in the freezing and thawing chamber (1), and the heat exchange plate (2) is arranged on the movable support (3).
7. The flexible and efficient freeze thawing apparatus of claim 1, further comprising: a first temperature sensor (10) is arranged in the freezing and re-melting chamber (1), a second temperature sensor (9) is arranged on the side wall of the porous heat exchange plate, and a third temperature sensor (8) is arranged on the first circulating pipe (16).
8. The flexible and efficient freeze thawing apparatus of claim 1, further comprising: the air holes of the porous heat exchange plate are arranged on the upper surface of the porous heat exchange plate.
9. The flexible and efficient freeze thawing apparatus of claim 1, further comprising: the air holes of the porous heat exchange plate are arranged on the lower surface of the porous heat exchange plate.
10. The flexible and efficient freeze thawing apparatus of claim 1, further comprising: and the upper surface and the lower surface of the porous heat exchange plate are both provided with air holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123021907.0U CN216347339U (en) | 2021-12-03 | 2021-12-03 | Flexible and efficient freezing and thawing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123021907.0U CN216347339U (en) | 2021-12-03 | 2021-12-03 | Flexible and efficient freezing and thawing device |
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| CN216347339U true CN216347339U (en) | 2022-04-19 |
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| CN202123021907.0U Active CN216347339U (en) | 2021-12-03 | 2021-12-03 | Flexible and efficient freezing and thawing device |
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2021
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