CN113758079B - Capillary liquid nitrogen pipeline iterative cycle water catching device and using method thereof - Google Patents
Capillary liquid nitrogen pipeline iterative cycle water catching device and using method thereof Download PDFInfo
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- CN113758079B CN113758079B CN202111020171.7A CN202111020171A CN113758079B CN 113758079 B CN113758079 B CN 113758079B CN 202111020171 A CN202111020171 A CN 202111020171A CN 113758079 B CN113758079 B CN 113758079B
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- cabin body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/06—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum the process involving freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
- F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
Abstract
The invention provides iterative cycle water catching equipment for a capillary liquid nitrogen pipeline and a using method thereof, wherein the iterative cycle water catching equipment comprises the following steps: the water capture device comprises a shell, a hollow cabin, a water capture cabin and a plurality of capillary tubes, wherein the shell is provided with an inlet and an outlet, the inlet is communicated with the first port, and the outlet is communicated with the second port; the outer side of the hollow cabin body is connected with the shell, the inner side of the hollow cabin body forms a water catching cabin body, and the capillary tubes and the hollow cabin body are communicated and staggered in the water catching cabin body; wherein the hollow chamber body is used for injecting liquid nitrogen through the inlet so as to inject all capillary pipelines connected with the hollow chamber body; the surface area of the capillary pipeline and the low-temperature effect of liquid nitrogen are fully utilized to form high-efficiency large-area water capture, and the effect of drying air is achieved.
Description
Technical Field
The invention relates to the technical field of drying, in particular to a capillary liquid nitrogen pipeline iterative cycle water catching device and a using method thereof.
Background
For the drying industry, the conventional drying method generally adopts heat conduction drying or freeze drying. For example: chinese patent publication No. CN 213631205U discloses a membrane dryer, which uses liquid nitrogen as a refrigeration source for drying, and specifically, uses a fan to blow liquid nitrogen into membrane cloth of a conveying mechanism for drying. However, the drying method does not substantially change the humidity of the drying environment, and consumes a large amount of liquid nitrogen, which results in high production cost. In view of this, how to design a technology for reducing the usage amount of liquid nitrogen to reduce the production cost is a technical problem to be solved by the invention.
Disclosure of Invention
The invention provides iterative cycle water catching equipment for a capillary liquid nitrogen pipeline and a using method thereof, which are used for reducing the using amount of liquid nitrogen so as to reduce the production cost.
The invention provides a capillary liquid nitrogen pipeline iterative cycle water catching device, which comprises: the water capture device comprises a shell, a water capture cabin body, a hollow cabin body and a plurality of capillary tubes, wherein the water capture cabin body is provided with a first port and a second port, the water capture cabin body is arranged in the shell, the shell is provided with an inlet and an outlet, the inlet is communicated with the first port, and the outlet is communicated with the second port; the outer side of the hollow cabin body is connected with the shell, the inner side of the hollow cabin body is connected with the water catching cabin body, and the capillary tubes are communicated with the hollow cabin body and are arranged in the water catching cabin body in a staggered mode; wherein, the hollow cabin body is used for containing liquid nitrogen.
Furthermore, a plurality of staggered capillary tubes and the bottom surface of the water capture cabin form intervals.
Furthermore, the inlet and the outlet are respectively provided with a door body capable of being opened and closed.
Further, the hollow cabin body is of an annular structure and is wrapped outside the water capture cabin body.
Further, still include the discharge pipe, the first mouth of pipe of capillary with the cavity cabin body intercommunication, the second mouth of pipe of capillary with the discharge pipe intercommunication.
Further, still include the feed liquor pipe, the feed liquor pipe intercommunication the cavity cabin body and stretch out to the outside of shell.
Furthermore, a drain pipe is arranged at the bottom of the water catching cabin body.
Further, a plurality of said housings are included, two adjacent ones of said housings, wherein said outlet on one of said housings is butted together with said inlet on the other of said housings.
The invention also provides a use method of the capillary liquid nitrogen pipeline iterative cycle water catching device, which comprises the following steps: liquid nitrogen is injected into the hollow cabin body, the liquid nitrogen in the hollow cabin body flows into the capillary, and cold energy is released outwards by the capillary to capture moisture in the air.
Further, the method also comprises the following steps: after the capillary tube in one of the shells is frozen to be full of ice crystals, liquid nitrogen is injected into the hollow cabin body in the other adjacent shell for drying treatment.
According to the iterative circulation water catching device with the capillary liquid nitrogen pipeline and the using method thereof, the hollow cabin body used for storing the liquid nitrogen is arranged between the water catching cabin body and the shell, the plurality of capillary tubes are arranged inside the water catching cabin body, the liquid nitrogen in the hollow cabin body can flow into the capillary tubes, on one hand, the capillary tubes can be used for cooling a water catching cavity formed by the water catching cabin body so as to perform drying treatment by using a cold well principle, on the other hand, the capillary tubes can be directly used as water catching components, so that the moisture contained in the air is directly condensed on the capillary tubes in the drying process, the water catching capacity is effectively improved, and the drying effect is optimized; meanwhile, for the consumption of the liquid nitrogen, the capillary can perform drying operation by using reduced liquid nitrogen because the liquid nitrogen enters the capillary for drying operation, so that the use amount of the liquid nitrogen is effectively reduced, and the production cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an iterative circulation water capture device with capillary liquid nitrogen pipelines according to the present invention;
FIG. 2 is a second schematic structural diagram of the iterative circulation water catching device with capillary liquid nitrogen pipeline according to the present invention;
FIG. 3 is a cross-sectional view of the capillary liquid nitrogen pipeline iterative cycle water capture device of the present invention.
Reference numerals:
a housing 1;
an insulating layer 11, a discharge pipe 12 and a drain pipe 13;
a water catching cabin body 2;
a hollow cabin 3;
a liquid inlet pipe 31;
a capillary 4.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to fig. 3, the present invention provides a capillary liquid nitrogen pipeline iterative cycle water capture device, comprising: the water capture device comprises a shell 1, a water capture cabin body 2, a hollow cabin body 3 and a plurality of capillary tubes 4, wherein the water capture cabin body 2 is of a tunnel structure and is provided with a first port (not marked) and a second port (not marked), the water capture cabin body 2 is arranged in the shell 1, an inlet (not marked) and an outlet (not marked) are arranged on the shell 1, the inlet is communicated with the first port, and the outlet is communicated with the second port; the hollow cabin body 3 is arranged between the shell 1 and the water catching cabin body 2, the outer side of the hollow cabin body 3 is connected with the shell 1, the water catching cabin body 2 is formed on the inner side of the hollow cabin body 3, the capillary tubes 4 are communicated with the hollow cabin body 3, and the capillary tubes 4 are arranged in the water catching cabin body 2 in a staggered mode.
Specifically, in the actual use process, the hollow chamber 3 is used for storing liquid nitrogen, and the capillary 4 is connected with the hollow chamber 3, so that the liquid nitrogen in the hollow chamber 3 can flow into the capillary 4.
And for the part of the capillary 4 in the water-catching cabin body 2, the liquid nitrogen entering the capillary 4 flows into the capillary 4, and the liquid nitrogen refrigerates a water-catching cavity formed in the water-catching cabin body 2 through the capillary 4, so that the air in the water-catching cabin body 2 is dried.
The capillary 4 has a small inner diameter, so that the amount of liquid nitrogen flowing into the capillary 4 is small, and the liquid nitrogen can efficiently exchange heat with the water trap chamber 2 by the capillary 4. Meanwhile, the liquid nitrogen in the hollow cabin 3 can continuously flow into the capillary 4 to realize the iterative refrigeration of the liquid nitrogen, so as to improve the drying effect.
In order to improve the heat insulation performance, a heat insulation layer 11 can be arranged on the water catching cabin body of the shell 1, and the heat insulation layer 11 is wrapped outside the hollow cabin body 3 so as to reduce the occurrence of cold leakage caused by cold quantity released from the hollow cabin body 3 to the outside of the shell 1. In addition, door bodies (not shown) that can be opened and closed are provided at the inlet and the outlet, respectively. Specifically, in the drying operation process, the door body is in a closed state, so that the water catching cavity formed by the water catching cabin body 2 forms a closed space, and thus, effective drying operation can be performed. When articles need to be taken and placed, the door body is opened.
In addition, in order to conveniently fill liquid nitrogen, the hollow cabin body 3 is also connected with a liquid inlet pipe 31 which is communicated with the hollow cabin body and extends out of the shell. Specifically, when the device is used, an operator injects liquid nitrogen into the hollow cabin 3 through the liquid inlet pipe 31, and the liquid nitrogen in the hollow cabin 3 flows into each capillary 4 again so as to capture water through the outward cold energy of the capillary 4.
In order to discharge nitrogen conveniently, the casing 1 is further provided with a discharge pipe 12, a first pipe orifice of the capillary 4 is communicated with the hollow cabin 3, and a second pipe orifice of the capillary 4 is communicated with the discharge pipe 12. Specifically, during the actual use process, the liquid nitrogen in the capillary 4 is heated and changed into nitrogen gas, the nitrogen gas in the capillary 4 flows into the discharge pipe 12, and the nitrogen gas can be discharged through the discharge pipe 12. Meanwhile, the liquid nitrogen stored in the hollow cabin 3 will continue to flow into the capillary 4 to supplement the liquid nitrogen so as to realize continuous drying operation. Wherein the discharge port 121 of the discharge pipe 12 may protrude to the outside of the case 1.
For the capillary liquid nitrogen pipeline iterative cycle water capture equipment, the hollow cabin body 3 surrounds the outside of the water capture cabin body 2, and the outer shell and the heat preservation layer are wrapped on the outside of the hollow cabin body 3 to form a box body structure. When the device works, liquid nitrogen is injected into the hollow cabin body 3 through the liquid inlet pipe 31, flows through the capillary tubes 4 communicated with the hollow cabin body 3 after the liquid nitrogen is fully distributed in the hollow cabin body, and finally all the capillary tubes 4 are gathered to the discharge pipe 12 to discharge nitrogen so as to form circulation.
In addition, according to the production requirement, a plurality of shells 1 arranged in series can be configured, and in two adjacent shells 1, the outlet on one shell 1 is butted with the inlet on the other shell 1. Specifically, each shell 1 is provided with an independent water-catching chamber 2, a hollow chamber 3 and a capillary tube 4, and when the water-catching chamber 2 at the previous station needs to be deiced, objects which are not dried can be pushed to the next station for continuous treatment.
Specifically, each capillary liquid nitrogen pipeline iterative cycle water catching device is of a tunnel type structure formed by single box bodies, and each capillary liquid nitrogen pipeline iterative cycle water catching device forms an independent cycle system. After liquid nitrogen is injected from the liquid inlet pipe 31, because the temperature is reduced instantly, when gas passes through the tunnel, moisture in the gas can be captured into ice by the combined action of the water capturing cabin body 2 of the ultralow-temperature hollow cabin body 3 and the surface of the capillary 4, because the capillary 4 is dense, the hemp surface area is very large, the space water capturing utilization rate and capacity are greatly increased, when the water capture reaches the upper limit, the liquid nitrogen injection is stopped, the temperature is gradually increased, the captured ice is melted into water, the water is discharged from the water discharge pipe 13 connected with the return hole at the bottom of the water capturing cabin body 2, and the water can be reused after being discharged. Because the water catching tunnel is composed of a plurality of independent box bodies, and the box bodies are staggered for use, the effect of continuously catching water can be achieved.
Further, in order to improve the drying effect, a plurality of capillary tubes 4 are arranged on the water capture chamber body 2 in a staggered manner.
Specifically, the capillary tubes 4 are distributed in the whole space in a complex and staggered manner, the purpose is to fully occupy the space by the pipelines of the whole capillary tubes 4, the surface area of the pipelines is increased, the larger the surface area is, the more water in condensed air is, the pipelines can be filled with nitrogen, the temperature is low, and water molecules in flowing air can be pre-cooled and frozen to catch water and realize drying air. The capillary tube 4 fills the water catching cabin area of the whole water catching cabin 2, and the whole water catching capacity is in direct proportion to the pipeline surface area of the capillary tube 4, so that the water catching capacity of the box body in unit volume is effectively enhanced.
Further, for the hollow cabin 3, the water-catching cabin 2 is a heat-conducting water-catching cabin, and the hollow cabin 3 is of an annular structure and is wrapped outside the water-catching cabin 2. Specifically, the water catching cabin body 2 is made of heat conducting materials, and cold energy released by the hollow cabin body 3 can be conducted into the water catching cavity body through the water catching cabin body 2, so that the drying efficiency is improved.
Based on the above technical scheme, optionally, in the drying process, with the increase of the drying times and time, an ice layer is formed on the surface of the water catching cabin body 2 and the capillary 4, and the drying effect is affected by a thicker ice layer. Therefore, it is necessary to perform the deicing operation at regular intervals.
The deicing mode may be a natural defrosting mode, or an auxiliary heating mode. For example: the heating can be carried out by adopting an electric heating wire, specifically, the electric heating wire is arranged at one side of the capillary tube 4, when the ice melting is carried out, the electric heating wire is electrified and heated to heat the capillary tube 4 and the water catching cabin body 2, and the heat generated by the electric heating wire melts the ice layer on the capillary tube 4 and the water catching cabin body 2.
Or, an electromagnetic wave mode can be adopted, for this purpose, the water catching cabin body 2 is made of a metal plate, and the capillary liquid nitrogen pipeline iterative cycle water catching device further comprises an electromagnetic wave generator. Specifically, during the deicing process, no liquid nitrogen is present in the hollow cabin 3, and at this time, the door body is closed and the electromagnetic wave generator is started. Electromagnetic waves generated by the electromagnetic wave generator enter the water catching cabin body 2, the water catching cabin body of the water catching cabin body 2 and an ice layer formed on the capillary tube 4 are quickly melted under the action of the electromagnetic waves, and the melted ice water is finally discharged to the outside from the water discharge pipe 13.
Wherein, the electromagnetic wave generator is generally arranged outside the water capture chamber body 2, so as to conveniently transmit the electromagnetic wave into the water capture chamber body 2, the electromagnetic wave generator is arranged outside the shell 1, and the transmitting end part of the electromagnetic wave generator is provided with a conducting part which extends into the water capture chamber body. Specifically, since the temperature inside the water capture tank body 2 is low, the electromagnetic wave generator is installed outside the water capture tank body 2, and the electromagnetic waves generated by the electromagnetic wave generator are transmitted into the water capture tank body 2 through the conductive member, so that the electromagnetic waves are transmitted into the water capture tank body for electromagnetic wave heating. The conductive member may be made of ceramic, glass, or plastic material, which is not limited or described herein.
Further, in order to improve the distribution uniformity of the electromagnetic waves and improve the efficiency of the electromagnetic waves for deicing, the conducting member includes a main body and a plurality of branches connected to the main body, the branches are arranged side by side, and a conducting member is arranged between two adjacent capillaries 4. Specifically, because the rotatable wave stirrer cannot be installed in the water capture cabin body, in order to enable the electromagnetic waves to be uniformly distributed, the electromagnetic waves emitted by the electromagnetic wave generator are transmitted to the plurality of branch bodies through the trunk body and are finally conveyed into the water capture cabin body through each branch body, meanwhile, because the branch bodies are positioned between the two capillary tubes 4, the capillary tubes 4 are generally made of metal materials (such as copper), the effect of reflecting the electromagnetic waves can be achieved, and then the electromagnetic waves are conveyed in a dispersed manner through the branch bodies and are matched with the capillary tubes 4 for reflection, so that the uniform distribution of the electromagnetic waves in the water capture cabin body 2 can be ensured.
The invention also provides a using method of the iterative cycle water catching device with the capillary liquid nitrogen pipeline, which comprises the following steps: liquid nitrogen is injected into the hollow cabin body, the liquid nitrogen in the hollow cabin body flows into the capillary, and cold energy is released outwards by the capillary to capture moisture in the air.
Specifically, after liquid nitrogen is injected into the hollow cabin body, the liquid nitrogen flows into the capillary tubes to dry the air in the water catching cabin body, the surface temperature of the capillary tubes is extremely low, and the water released by the articles can be efficiently caught.
Further, the use method further comprises the following steps: after the capillary tube in one of the shells is frozen to be full of ice crystals, liquid nitrogen is injected into the hollow cabin body in the other adjacent shell for drying treatment.
Specifically, when the ice layer formed on the water capture chamber and the capillary tube in one of the shells is thick, liquid nitrogen in the hollow chamber in the shell is drained to perform deicing operation, and liquid nitrogen is injected into the hollow chamber in the other adjacent shell to perform drying treatment, so that multiple devices can be alternately used, and the use requirement of continuous drying can be met.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The iterative cycle water catching device for the capillary liquid nitrogen pipeline is characterized by comprising: the water capture device comprises a shell, a water capture cabin body, a hollow cabin body and a plurality of capillary tubes, wherein the water capture cabin body is provided with a first port and a second port, the water capture cabin body is arranged in the shell, the shell is provided with an inlet and an outlet, the inlet is communicated with the first port, and the outlet is communicated with the second port; the outer side of the hollow cabin body is connected with the shell, the inner side of the hollow cabin body is connected with the water catching cabin body, and the capillary tubes are communicated with the hollow cabin body and are arranged in the water catching cabin body in a staggered mode; wherein the hollow cabin body is used for containing liquid nitrogen;
in addition, the capillary tubes are distributed on the whole water catching cabin body in a staggered and complex way;
the water catching cabin body is made of a metal plate, the capillary liquid nitrogen pipeline iterative cycle water catching device further comprises an electromagnetic wave generator, the electromagnetic wave generator is arranged outside the shell, a transmission end portion of the electromagnetic wave generator is provided with a transmission part, the transmission part extends into the water catching cabin body, the transmission part comprises a main body and a plurality of branch bodies, the branch bodies are connected to the main body and are arranged side by side, and one branch body is arranged between every two adjacent capillary tubes.
2. The iterative circulation water capture device with the capillary liquid nitrogen pipelines according to claim 1, wherein a plurality of staggered capillary tubes form a gap with the bottom surface of the water capture chamber.
3. The iterative circulation water catching device of the capillary liquid nitrogen pipeline according to claim 1, wherein the inlet and the outlet are respectively provided with a switchable door body.
4. The capillary liquid nitrogen pipeline iterative cycle water capture device of claim 1, wherein the hollow chamber is of an annular structure and is wrapped outside the water capture chamber.
5. The iterative circulation water capture device with the capillary liquid nitrogen pipeline as claimed in claim 1, further comprising a discharge pipe, wherein a first nozzle of the capillary pipe is communicated with the hollow cabin body, and a second nozzle of the capillary pipe is communicated with the discharge pipe.
6. The iterative circulating water capture device with the capillary liquid nitrogen pipeline as claimed in claim 1, further comprising a liquid inlet pipe which is communicated with the hollow cabin body and extends out of the outer shell.
7. The iterative circulating water capture device with the capillary liquid nitrogen pipeline as claimed in claim 1, wherein the bottom of the water capture cabin body is further provided with a drain pipe.
8. The iterative capillary liquid nitrogen pipeline circulation water capture device of claim 1, comprising a plurality of said housings, two adjacent ones of said housings, wherein said outlet on one of said housings is butted together with said inlet on the other of said housings.
9. A method of using the capillary liquid nitrogen pipeline iterative cycle water capture device of any one of claims 1-8, comprising:
liquid nitrogen is injected into the hollow cabin body, the liquid nitrogen in the hollow cabin body flows into the capillary, and cold energy is released outwards by the capillary to capture moisture in the air.
10. The method of use of claim 9, further comprising: after the capillary tube in one of the shells is frozen to be full of ice crystals, liquid nitrogen is injected into the hollow cabin body in the other adjacent shell for drying treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111020171.7A CN113758079B (en) | 2021-09-01 | 2021-09-01 | Capillary liquid nitrogen pipeline iterative cycle water catching device and using method thereof |
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| CN202111020171.7A CN113758079B (en) | 2021-09-01 | 2021-09-01 | Capillary liquid nitrogen pipeline iterative cycle water catching device and using method thereof |
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| CN113758079B true CN113758079B (en) | 2023-03-21 |
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| JP2011237136A (en) * | 2010-05-12 | 2011-11-24 | Kyowa Shinku Gijutsu Kk | Device and method for removing moisture remaining in material to be dried in freeze dryer employing upright cylindrical tube as dry chamber |
| CN102721269A (en) * | 2012-07-11 | 2012-10-10 | 海南卫康制药(潜山)有限公司 | Liquid nitrogen refrigeration micro-wave heating vacuum drier |
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| JP2756180B2 (en) * | 1990-10-11 | 1998-05-25 | 東京瓦斯株式会社 | Low temperature liquefied gas vaporizer |
| CN2198577Y (en) * | 1994-03-02 | 1995-05-24 | 谭均明 | Refrigerating drier |
| US5582015A (en) * | 1994-12-27 | 1996-12-10 | Ecometrics Corp. | Liquid nitrogen capillary heat exchanger |
| CN2241851Y (en) * | 1995-08-28 | 1996-12-04 | 王子凯 | Insulation refrigerating box |
| CN107940574A (en) * | 2017-12-01 | 2018-04-20 | 上海原能细胞生物低温设备有限公司 | Liquid nitrogen cooling and dehumidifying device |
| CN208704235U (en) * | 2018-04-24 | 2019-04-05 | 李明 | A kind of combined type LNG cold energy recycling vaporizer based on gravity assisted heat pipe |
| CN209326203U (en) * | 2018-11-26 | 2019-08-30 | 山东农业大学 | Multifunctional vacuum freeze drier |
| US10859305B1 (en) * | 2019-07-31 | 2020-12-08 | Reflect Scientific Inc. | High performance ULT chest freezer with dehumidification |
| CN111184060A (en) * | 2019-12-30 | 2020-05-22 | 大有作为(天津)冷链设备有限公司 | Fruit and vegetable fresh-keeping box with electric commercial cold chain |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011237136A (en) * | 2010-05-12 | 2011-11-24 | Kyowa Shinku Gijutsu Kk | Device and method for removing moisture remaining in material to be dried in freeze dryer employing upright cylindrical tube as dry chamber |
| CN102721269A (en) * | 2012-07-11 | 2012-10-10 | 海南卫康制药(潜山)有限公司 | Liquid nitrogen refrigeration micro-wave heating vacuum drier |
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