CN113911564A - Refrigerating device for cold chain transportation and method thereof - Google Patents
Refrigerating device for cold chain transportation and method thereof Download PDFInfo
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- CN113911564A CN113911564A CN202111221356.4A CN202111221356A CN113911564A CN 113911564 A CN113911564 A CN 113911564A CN 202111221356 A CN202111221356 A CN 202111221356A CN 113911564 A CN113911564 A CN 113911564A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/02—Internal fittings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
- B65D25/02—Internal fittings
- B65D25/10—Devices to locate articles in containers
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Abstract
A cold storage device for cold chain transportation and a method thereof are provided, wherein the cold storage device comprises an insulation can, a cold source bottle, a valve body and a connecting pipe, and is characterized in that the insulation can comprises a box body and a box cover, and the box body is connected with the box cover; a cold source bottle is arranged in the box body and connected with the box body; a valve body is also arranged in the box body and connected with the box body; one end of the connecting pipe is connected with the cold source bottle, and the other end of the connecting pipe is connected with one end of the valve body; the other end of the valve body is provided with an exhaust pipeline which is sleeved with the valve body; the cold source bottle is connected with the cold source bottle through a connecting pipe, and the cold source bottle is connected with the cold source bottle through a connecting pipe; the temperature difference of the cold source bottle is reduced, the gas release amount of the cold source is reduced, the temperature self-balancing state is achieved, and the articles in the heat insulation box are continuously refrigerated and kept fresh.
Description
Technical Field
The invention relates to the technical field of cold chain logistics transportation, in particular to a refrigerating device for cold chain transportation and a method thereof.
Background
Nowadays, electronic commerce is rapidly developed, and things are purchased on the internet more and more commonly all over the country, wherein related products and foods are various. In order to improve the quality, safety and market value of food, the cold chain logistics for food preservation have been paid attention by the domestic public.
However, in recent years, cold chain logistics, accompanied by the increase in the electric commercial proportion of fresh products and the increase in the consumption of various frozen foods and prepared foods, is rapidly developing, increasing by more than 20% each year, and is expected to continue to rapidly increase in the coming years. The chain constructed by the complete cold chain logistics system is a cold storage-a refrigerator car-a commercial cold storage-a cold storage distribution-a consumer, namely a so-called whole-course cold chain. In reality such a distribution chain is difficult to implement, especially on refrigerated distribution of the last kilometer.
The technology of fresh-keeping in the current cold chain logistics is mainly divided into two types of physical and chemical fresh-keeping; wherein, the chemical preservation mainly adopts the technology of preservative soaking and covering agent wrapping, and the physical preservation mainly adopts the technology of cooling and refrigeration and flexible packaging; in the physical cooling and refrigeration process, the cold chain material flow has dry ice, and the sublimation and heat absorption of the dry ice are utilized to achieve the purpose of cooling, refrigeration and fresh keeping. However, if the dry ice is not properly treated, the dry ice is easy to volatilize and lose, and a lot of loss can be caused; in addition, when the goods are cooled, dry ice can not be stored in a sealed container, for example, the goods to be refrigerated and the dry ice are put into a common heat-preservation barrel and a plastic bottle together and a cover is screwed, which is the least safe; the dry ice is low to-78.5 ℃ under normal pressure, and is easy to be frozen if directly contacting with a refrigerated object, so that the device and the method for controllably releasing the dry ice with simple structure become an important link in a cold chain.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a refrigeration device for cold chain transportation and a method thereof, which can effectively solve the problems proposed in the background art.
In order to solve the problems, the technical scheme adopted by the invention is as follows: a cold storage device for cold chain transportation and a method thereof are provided, wherein the cold storage device comprises an insulation can, a cold source bottle, a valve body and a connecting pipe, and is characterized in that the insulation can comprises a box body and a box cover, and the box body is connected with the box cover; a cold source bottle is arranged in the box body and connected with the box body; a valve body is also arranged in the box body and connected with the box body; one end of the connecting pipe is connected with the cold source bottle, and the other end of the connecting pipe is connected with one end of the valve body; the other end of the valve body is provided with an exhaust pipeline which is sleeved with the valve body;
the refrigeration method comprises the following steps:
s1, installing a refrigeration device: the heat insulation box, the cold source bottle, the valve body and the connecting pipe are installed into a whole to form a refrigerating device;
s2, placing articles: placing the articles to be transported by the cold chain into the heat insulation box, and then tightly covering the box cover;
s3, cooling the gas released by the cold source bottle: the cold source gas is released from the interior of the cold source bottle and then is transmitted into the heat insulation box through the valve body to be cooled;
s4, continuously refrigerating and preserving the heat preservation box: along with the temperature reduction in the incubator after a large amount of cold source gas is discharged, the pressure in the cold source bottle is reduced, the cold source gas release amount is reduced, the temperature self-balancing state is achieved, and the articles in the incubator are continuously refrigerated and kept fresh.
As a further preferable aspect of the present invention, the valve body is a tesla valve; and cold source gas in the cold source bottle is discharged through a Tesla valve.
As a further preferable aspect of the present invention, the substance in the cold source bottle is dry ice; the gas released by the cold source bottle is dry ice gas.
As a further preferable scheme of the invention, a placing box is arranged in the box body; the placing box is fixedly arranged inside the box body.
As a further preferable scheme of the present invention, the placing box is provided with a cold source fixing groove and a valve body fixing groove; a cold source bottle is arranged in the cold source fixing groove, and the cold source bottle is limited and fixed with the cold source fixing groove; the valve body is installed in the valve body fixing groove, and the valve body fixing groove are fixed in a limiting mode.
As a further preferable scheme of the invention, a connecting pipe is arranged between the cold source bottle and the valve body; one end of the connecting pipe is sleeved with an output port of the cold source bottle, and the other end of the connecting pipe is sleeved with an input port of the valve body; the connecting pipe is communicated with the cold source bottle and the valve body; the exhaust pipeline is sleeved with the output port of the valve body.
As a further preferable scheme of the invention, the box cover is arranged on the top surface of the box body and is rotatably connected with the box body; and a sealing ring is arranged between the box body and the box cover.
As a further preferable scheme of the invention, the box body is provided with a heat-insulating layer; the insulating layer is made of a foaming material.
As a further preferable embodiment of the present invention, the step S1 specifically includes:
s1.1, installing a cold source bottle: placing the cold source bottle into the box body for limiting and fixing;
s1.2, installing a valve body: placing the valve body in the box body for limiting and fixing;
s1.3, connecting the cold source bottle with the valve body: the cold source bottle and the valve body are connected through a connecting pipe.
As a further preferable scheme of the present invention, the cold source bottle of the step S3 releases the gas in the following manner:
along with the increment change of the external temperature condition and time, the temperature difference between the inside and the outside of the cold source bottle becomes large, the heat exchange quantity is increased, the pressure in the cold source bottle rises, more heat can be absorbed, and at the moment, the cold source gas after the dry ice in the cold source bottle is sublimated is discharged into the heat preservation box through the valve body to reduce the temperature in the heat preservation box.
Compared with the prior art, the invention provides a cold storage device for cold chain transportation and a method thereof, and the cold storage device has the following beneficial effects:
the Tesla valve is arranged, so that cold source gas released by the cold source bottle flows into the heat insulation box through the Tesla valve in the using process, and meanwhile, the Tesla valve can also prevent the cold source gas in the heat insulation box from flowing back; be provided with cold source fixed slot, valve body fixed slot in the box, can make cold source bottle, valve body steady fixed in the transportation, not fragile.
Drawings
FIG. 1 is a flow chart of a refrigeration method of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the valve body structure of the present invention;
FIG. 4 is a schematic view of the internal structure of the present invention;
FIG. 5 is a schematic view of the external structure of the present invention;
wherein: 1. insulation can, 101, box body, 102, box cover, 103, placing box, 104, cold source fixing groove, 105, valve body fixing groove, 106, heat preservation layer, 2, cold source bottle, 3, valve body, 4, connecting pipe, 5 and exhaust pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, the invention provides a cold storage device for cold chain transportation and a method thereof, wherein the cold storage device comprises an incubator 1, a cold source bottle 2, a valve body 3 and a connecting pipe 4, and is characterized in that the incubator 1 comprises a box body 101 and a box cover 102, and the box body 101 is connected with the box cover 102; a cold source bottle 2 is arranged in the box body 101, and the cold source bottle 2 is connected with the box body 101; the valve body 3 is also arranged in the box body 101, and the valve body 3 is connected with the box body 101; one end of the connecting pipe 4 is connected with the cold source bottle 2, and the other end of the connecting pipe 4 is connected with one end of the valve body 3; the other end of the valve body 3 is provided with an exhaust pipeline 5, and the exhaust pipeline 5 is sleeved with the valve body 3;
the refrigeration method comprises the following steps:
s1, installing a refrigeration device: the insulation can 1, the cold source bottle 2, the valve body 3 and the connecting pipe 4 are installed into a whole to form a refrigerating device;
s1.1, installing a cold source bottle: placing the cold source bottle 2 into the box body 101 for limiting and fixing;
s1.2, installing a valve body: the valve body 3 is placed in the box body 101 to be limited and fixed;
s1.3, connecting the cold source bottle with the valve body: the cold source bottle 2 and the valve body 3 are connected through a connecting pipe 4;
s2, placing articles: placing the articles to be transported by the cold chain into the heat insulation box 1, and then tightly covering the box cover 102;
s3, cooling the gas released by the cold source bottle: cold source gas is released from the interior of the cold source bottle 2 and then is transmitted into the heat insulation box 1 through the valve body 3 to be cooled;
s4, continuously refrigerating and preserving the heat preservation box: after a large amount of cold source gas is discharged, the temperature in the insulation can 1 is reduced, the pressure in the cold source bottle 2 is reduced, the release speed and the release amount of the cold source gas through the valve body 3 are reduced, the cold source bottle 2 reaches a temperature self-balancing state after repeated circulation, and the articles in the insulation can 1 are continuously refrigerated and preserved.
As a further preferable aspect of the present invention, the valve body 3 is a tesla valve; cold source gas in the cold source bottle 2 is discharged through a Tesla valve; the Tesla valve is a valve conduit, has no valve structure, can realize a one-way blocking effect, and is a passive check valve. The Tesla valve can self-balance control the release speed and release amount of the cold source gas, and the Tesla valve changes along with the pressure change in the cold source bottle, and finally self-balance is achieved; after self-balancing is achieved, the air pressure is relatively stable due to the fact that the environment temperature in the box body is relatively stable, and therefore the effect of accurate temperature control can be achieved through the stability of the Tesla valve structure and the stability of pressure discharge.
As a further preferable scheme of the present invention, the substance in the cold source bottle 2 is dry ice or other substance capable of reducing temperature; the gas released by the cold source bottle 2 is dry ice gas or other gases capable of reducing temperature; the dry ice can be used for well cooling, and the articles in the box body 101 are refrigerated; a small amount of cold source gas in the cold source bottle can spill at the joint gap department of cold source bottle and bottle lid, puts outward and forms cold bridge, and long-time to the bottle cooling, make bottle self form the cold source.
As a further preferable scheme of the present invention, a placing box 103 is arranged inside the box body 101; the placing box 103 is fixedly arranged inside the box body 101.
As a further preferable scheme of the present invention, the placing box 103 is provided with a cold source fixing groove 104 and a valve body fixing groove 105; the cold source fixing groove 104 is internally provided with a cold source bottle 2, and the cold source bottle 2 and the cold source fixing groove 104 are limited and fixed; the valve body 3 is installed in the valve body fixing groove 105, and the valve body 3 and the valve body fixing groove 105 are fixed in a limiting mode.
As a further preferable scheme of the invention, a connecting pipe 4 is arranged between the cold source bottle 2 and the valve body 3; one end of the connecting pipe 4 is sleeved with an output port of the cold source bottle 2, and the other end of the connecting pipe 4 is sleeved with an input port of the valve body 3; the valve body 3 is divided into a positive direction and a negative direction, and the cold source gas is output from the input port to the box body 101 in the positive direction; as shown in fig. 3, the direction from left to right is the direction in which the cold source gas passes through the input port and then is output into the box 101; the connecting pipe 4 is communicated with the cold source bottle 2 and the valve body 3; the exhaust pipeline 5 is sleeved with an output port of the valve body 3.
As shown in fig. 3, the direction from left to right is a positive direction, and when the cold source gas flows out from the positive direction of the tesla valve, the cold source gas flows smoothly without obstruction; when cold source gas reflows from the reverse direction of the Tesla valve, the cold source gas is divided into two sections when passing through each small section of the Tesla valve, the upper section of gas meets the lower section of gas after being wound, the gases in the two routes collide with each other to generate a pushback effect, then the gases continue to move forwards in the flow channel, and then the gases pass through a plurality of identical flow channels, the pushback effect is amplified by multiple times, the gases are reduced by multiple times, and the backflow effect of the gases is greatly weakened; when the flow passage in the Tesla valve is arranged enough, an ideal non-return effect can be achieved.
As a further preferable embodiment of the present invention, the cover 102 is disposed on the top surface of the case 101, and the cover 102 is rotatably connected to the case 101, and the cover and the case can be rotated by hinges or rotating shafts, and not limited to the hinges and the rotating shafts, but other rotating structures may be substituted; or the box cover and the box body are separated, namely the box cover directly covers the box body; a sealing ring is arranged between the box body 101 and the box cover 102, so that leakage of cold source gas can be reduced in the transportation process, and the temperature in the box body 101 is kept in a balanced state to the maximum extent.
As a further preferable scheme of the present invention, the box body 101 is provided with an insulating layer 106; the insulating layer 106 is made of a foaming material; the foam material can keep the temperature in the cabinet 101 in a balanced state better.
As a further preferred embodiment of the present invention, the cold source bottle 2 of the step S3 releases the gas in the following manner:
along with the increment change of ambient temperature condition and time, the inside and outside difference in temperature grow, the heat transfer volume increases in cold source bottle 2, leads to 2 internal pressure in cold source bottle to rise, can absorb more heats, and the cold source gas after 2 internal dry ice sublimes of cold source bottle passes through valve body 3 and discharges to insulation can 1 in this moment, reduces the temperature in insulation can 1.
As a specific embodiment of the present invention:
the insulation can 1, the cold source bottle 2, the valve body 3 and the connecting pipe 4 are installed into a whole to form a refrigerating device; after the installation of refrigerating plant is accomplished, in placing the article that need the cold chain transportation and getting into box 101, then the tight case lid 102 of lid, be equipped with the sealing washer between box 101 and the case lid 102, in the transportation, can reduce the gaseous spilling of cold source, the temperature that lets in the box 101 of ability at the at utmost keeps at balanced state, can be better to the article in the box 101 carry out cold-stored fresh-keeping.
The dry ice in the cold source bottle 2 is-78.5 ℃ under normal pressure, in the transportation process, along with the increment change of the external temperature condition and time, the temperature difference between the inside and the outside of the cold source bottle 2 becomes large, the heat exchange quantity is increased, the pressure in the cold source bottle 2 is increased, more heat can be absorbed, the dry ice in the cold source bottle 2 is heated and sublimated to form dry ice gas, then the dry ice gas flows out from the output port of the cold source bottle 2 and reaches the Tesla valve after passing through the connecting pipe 4, and then the dry ice gas is output to the heat preservation box 1 through the exhaust pipeline 5 at the other end of the Tesla valve, so that the temperature in the heat preservation box 1 is reduced to refrigerate and preserve the stored articles.
After a large amount of cold source gas is discharged, the temperature in the insulation can 1 is reduced, the pressure in the cold source bottle 2 is reduced, the release speed and the release amount of the cold source gas through the Tesla valve are reduced, after repeated circulation, a temperature self-balancing state is achieved, and continuous refrigeration and fresh keeping are carried out on the articles in the insulation can 1.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A refrigerating device for cold chain transportation and a method thereof are provided, the refrigerating device comprises an insulation can (1), a cold source bottle (2), a valve body (3) and a connecting pipe (4), and is characterized in that the insulation can (1) comprises a box body (101) and a box cover (102), and the box body (101) is connected with the box cover (102); a cold source bottle (2) is arranged in the box body (101), and the cold source bottle (2) is connected with the box body (101); the valve body (3) is further installed in the box body (101), and the valve body (3) is connected with the box body (101); one end of the connecting pipe (4) is connected with the cold source bottle (2), and the other end of the connecting pipe (4) is connected with one end of the valve body (3); an exhaust pipeline (5) is installed at the other end of the valve body (3), and the exhaust pipeline (5) is sleeved with the valve body (3);
the refrigeration method comprises the following steps:
s1, installing a refrigeration device: the heat preservation box (1), the cold source bottle (2), the valve body (3) and the connecting pipe (4) are installed into a whole to form a refrigerating device;
s2, placing articles: placing the articles to be transported by the cold chain into the heat insulation box (1), and then tightly covering the box cover (102);
s3, cooling the gas released by the cold source bottle (2): cold source gas is released from the interior of the cold source bottle (2), and then the cold source gas is transmitted into the heat insulation box (1) through the valve body (3) to be cooled;
s4, continuous refrigeration and preservation of the heat preservation box (1): along with the reduction of the temperature in the insulation can (1) after a large amount of cold source gas is discharged, the pressure in the cold source bottle (2) is reduced, the release amount of the cold source gas is reduced, the temperature self-balancing state is achieved, and the articles in the insulation can (1) are continuously refrigerated and preserved.
2. A cold storage unit for cold chain transportation and a method thereof according to claim 1, wherein the valve body (3) is a tesla valve; the cold source gas in the cold source bottle (2) is discharged through a Tesla valve.
3. A cold storage device for cold chain transportation and a method thereof according to claim 1, wherein the substance in the cold source bottle (2) is dry ice; the gas released by the cold source bottle (2) is dry ice gas.
4. A cold storage device for cold chain transportation and method thereof according to claim 1, wherein the box body (101) is internally provided with a placing box (103); the placing box (103) is fixedly arranged inside the box body (101).
5. A cold storage device for cold chain transportation and method thereof according to claim 4, wherein the placing box (103) is provided with a cold source fixing groove (104), a valve body fixing groove (105); the cold source fixing groove (104) is internally provided with a cold source bottle (2), and the cold source bottle (2) is limited and fixed with the cold source fixing groove (104); the valve body (3) is installed in the valve body fixing groove (105), and the valve body (3) is fixed with the valve body fixing groove (105) in a limiting mode.
6. A refrigerator for cold chain transportation and method thereof according to claim 1, wherein a connecting pipe (4) is installed between the cold source bottle (2) and the valve body (3); one end of the connecting pipe (4) is sleeved with an output port of the cold source bottle (2), and the other end of the connecting pipe (4) is sleeved with an input port of the valve body (3); the connecting pipe (4) is communicated with the cold source bottle (2) and the valve body (3); the exhaust pipeline (5) is sleeved with an output port of the valve body (3).
7. A refrigerator for cold chain transportation and method thereof according to claim 1, wherein the cover (102) is provided on the top surface of the box body (101), and the cover (102) is rotatably connected to the box body (101); and a sealing ring is arranged between the box body (101) and the box cover (102).
8. A cold storage unit for cold chain transportation and a method thereof according to claim 7, wherein the box (101) is provided with an insulating layer (106); the insulating layer (106) is made of foaming materials.
9. A refrigerator for cold chain transportation and method thereof according to claim 1, wherein the step S1 comprises the following steps:
s1.1, installing a cold source bottle: placing the cold source bottle (2) into the box body (101) for limiting and fixing;
s1.2, installing a valve body: the valve body (3) is placed in the box body (101) to be limited and fixed;
s1.3, connecting the cold source bottle with the valve body: the cold source bottle (2) and the valve body (3) are connected through a connecting pipe (4).
10. A refrigerator for cold chain transportation and method thereof according to claim 1, wherein the cold source bottle (2) of step S3 releases gas in the following way:
along with the increment change of the external temperature condition and time, the temperature difference between the inside and the outside of the cold source bottle (2) is increased, the heat exchange quantity is increased, the pressure in the cold source bottle (2) is led to rise, more heat can be absorbed, and at the moment, the cold source gas after the dry ice in the cold source bottle (2) is sublimated is discharged into the heat insulation box (1) through the valve body (3) to reduce the temperature in the heat insulation box (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111221356.4A CN113911564B (en) | 2021-10-20 | 2021-10-20 | Cold storage method for cold chain transportation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111221356.4A CN113911564B (en) | 2021-10-20 | 2021-10-20 | Cold storage method for cold chain transportation |
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| Publication Number | Publication Date |
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| CN113911564A true CN113911564A (en) | 2022-01-11 |
| CN113911564B CN113911564B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111221356.4A Active CN113911564B (en) | 2021-10-20 | 2021-10-20 | Cold storage method for cold chain transportation |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4457142A (en) * | 1981-10-16 | 1984-07-03 | Firma Heinrich Bucher | Method of chilling materials and chilling container |
| US5363670A (en) * | 1993-04-19 | 1994-11-15 | Anthony Bartilucci | Self-contained cooler/freezer apparatus |
| CN2646633Y (en) * | 2003-09-06 | 2004-10-06 | 童明伟 | Carbon dioxide dry ice refrigeration and fresh-keeping apparatus |
| CN204056733U (en) * | 2014-09-15 | 2014-12-31 | 今创集团股份有限公司 | With the cold-chain box of temperature sensor |
| CN107835923A (en) * | 2015-07-10 | 2018-03-23 | 瓦卡瓦科技有限公司 | Equipment and shipping container structure including the sealing container for dry ice |
-
2021
- 2021-10-20 CN CN202111221356.4A patent/CN113911564B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4457142A (en) * | 1981-10-16 | 1984-07-03 | Firma Heinrich Bucher | Method of chilling materials and chilling container |
| US5363670A (en) * | 1993-04-19 | 1994-11-15 | Anthony Bartilucci | Self-contained cooler/freezer apparatus |
| CN2646633Y (en) * | 2003-09-06 | 2004-10-06 | 童明伟 | Carbon dioxide dry ice refrigeration and fresh-keeping apparatus |
| CN204056733U (en) * | 2014-09-15 | 2014-12-31 | 今创集团股份有限公司 | With the cold-chain box of temperature sensor |
| CN107835923A (en) * | 2015-07-10 | 2018-03-23 | 瓦卡瓦科技有限公司 | Equipment and shipping container structure including the sealing container for dry ice |
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| Publication number | Publication date |
|---|---|
| CN113911564B (en) | 2023-02-28 |
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