CN106839576A - Refrigerating plant - Google Patents
Refrigerating plant Download PDFInfo
- Publication number
- CN106839576A CN106839576A CN201710069509.5A CN201710069509A CN106839576A CN 106839576 A CN106839576 A CN 106839576A CN 201710069509 A CN201710069509 A CN 201710069509A CN 106839576 A CN106839576 A CN 106839576A
- Authority
- CN
- China
- Prior art keywords
- coil pipe
- refrigerant
- refrigerating plant
- soak chamber
- space
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003507 refrigerant Substances 0.000 claims abstract description 66
- 230000008676 import Effects 0.000 claims abstract description 20
- 239000002826 coolant Substances 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 10
- 238000005057 refrigeration Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000002631 hypothermal effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
-
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/40—Fluid line arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
Abstract
The invention provides a kind of refrigerating plant, it includes soak chamber, coil pipe, refrigerant storage tank and refrigerant recovering apparatus, coil pipe is located at the latter half of the inner space of soak chamber, the import of coil pipe through soak chamber locular wall after be connected with one end of coolant channel, the other end of coolant channel is connected with the refrigerant outlet of refrigerant storage tank, and the outlet of coil pipe with refrigerant recovering apparatus through being connected after the locular wall of soak chamber.The refrigerating plant, freeze by using the coil pipe positioned at lower space, can reach the horizontal homogeneous of Temperature Distribution and the effect of stable operation in low temperature memory space, being adjusted flexibly for the temperature of achievable low temperature space, solves the problems, such as that cold air or refrigerant easily diffuse up the reliable and stable operation of mechanical mechanism or automatic mechanism so as to threaten top.
Description
Technical field
The present invention relates to a kind of refrigerating plant.
Background technology
Refrigeration is a certain space or object is reached the temperature less than its surrounding medium, and maintains this low temperature
Process.Refrigeration mechanism main at present has two kinds：One kind is compressor cooling, and liquid refrigerant absorbs cooled in evaporator
Object heat after, be vaporized into the steam of low-temp low-pressure, then sucked by compressor, entered after being compressed into the steam of high pressure-temperature
Condenser, within the condenser to cooling medium (water or air) heat release, is condensed into highly pressurised liquid, through choke valve throttling for low pressure is low
The refrigerant of temperature, is again introduced into evaporator heat absorption vaporization, reaches the purpose of circularly cooling.This cryogenic temperature is higher, it is impossible to apply
In super low temperature refrigeration field.Another kind is freezed by media such as liquid nitrogen, including nozzle spray vaporific liquid nitrogen, by liquid
Nitrogen blows both approaches and is freezed after just gasifying by fan, and this kind of method can make temperature reach less than -100 DEG C.
By refrigeration, can not only change the temperature of life or working space, storing vegetable, meat can also be widely used for
The food such as class, marine product；And lower cryogenic temperature, especially less than -60 DEG C of techniques for ultra-low temperature, can be widely applied to life
Thing and medical domain.Especially for the longer-term storage of biological specimen, ultra-low temperature surroundings have especially important meaning, because super
Low storage temperature can reduce the biochemical reaction in biological specimen, so that the stability of various composition in biological specimen is improved,
And, often the stable holding time of the more low then sample of temperature is more long.
Stable, reliable, controllable, economic, environmentally friendly, the practical attainable ultra-low temperature refrigerating device of research manufacture, with existing
Real technical need.Meanwhile, with the fast development of life science and modern medical service technology in recent years, such cryogenic refrigeration dress
Put, will also there are more wide market prospects.
Traditional compressor mode is freezed, and the temperature of refrigeration is often difficult to reach condition of ultralow temperature, and can not meet very well
The technical requirements of situations such as sample (such as biological specimen) keeps for a long time.And use nozzle spray vaporific liquid nitrogen, by liquid nitrogen just
The method for being blown into storage container or space by fan after gasification is freezed, and often forms larger air-flow, causes internal gas
Stream is disorderly, it is difficult to form the low temperature space and environment of preferably controllable stabilization.Additionally, being also easy to cause the temperature mistake of upper space
Low fluctuation, so as to bring significantly adverse effect to the operation for generally needing matching used mechanical mechanism or automatic mechanism.
The content of the invention
The technical problems to be solved by the invention are super in order to overcome the refrigeration difficulty of refrigerating plant of the prior art to reach
Low temperature requirements easily cause the defect that internal gas flow is disorderly, upper space temperature is too low, and provide a kind of refrigerating plant.
The present invention solves above-mentioned technical problem by the following technical programs：
The invention provides a kind of refrigerating plant, it includes soak chamber, coil pipe, refrigerant storage tank and refrigerant-recovery dress
Put, coil pipe is located at the latter half of the inner space of soak chamber, the import of coil pipe through after the locular wall of soak chamber with refrigeration
One end of agent passage is connected, the other end of coolant channel is connected with the refrigerant outlet of refrigerant storage tank, and coil pipe goes out
Mouthful through soak chamber locular wall after be connected with refrigerant recovering apparatus.
This kind of mode, can not only realize profound hypothermia environment, internal gas flow not resulted in also disorderly, it is to avoid cause sample
The inaccurate problem in position, while good thermograde can be formed so that upper temp is higher, is conducive to automatic mechanism
Operation.
It is preferred that the import of coil pipe is located at the bottom of coil pipe, the outlet of coil pipe is positioned at the top of coil pipe.Refrigerant from it is lower to
On flow in coils, make the temperature of the bottom of coil pipe minimum, the temperature on the top of coil pipe is higher.
It is preferred that being provided with conductive plate in the space that surrounds of coil pipe, conductive plate is fitted on coil pipe.Conductive plate plays heat exchange
While effect, the effect of protection sample is also acted as.
It is preferred that inner peripheral surface of the coil pipe around the inner space of soak chamber is arranged.The outer peripheral face of coil pipe fits in incubation cavity
The inner space of room, the space for surrounding coil pipe is tried one's best greatly, can store as far as possible many samples.
It is preferred that refrigerant recovering apparatus are circulating refrigerator, circulating refrigerator also entering by circulating line and coil pipe
Mouth is connected.Using circulating refrigerator, can circulate and constantly be freezed using a certain amount of refrigerant, greatly reduce system
The consumption of cryogen, it is thus also avoided that influence of the discharge refrigerant to environment or safety.
More preferably, refrigerating plant also includes triple valve, two imports of triple valve respectively with coolant channel, circulating line
It is connected, the outlet of triple valve is connected with the import of coil pipe.More it is preferred that triple valve carries out data exchange with controller.When
After flowing into a certain amount of refrigerant to coil pipe, triple valve manually or controller control, break coil pipe and refrigerant
The connection of the import of the connection of storage tank, ON cycle refrigeration machine and coil pipe.Protected by the continuous circularly cooling of circulating refrigerator
Can ceaselessly there is refrigerant to lower the temperature soak chamber in card coil pipe.
It is preferred that refrigerant recovering apparatus are refrigerant-recovery tank.Refrigerant flows into refrigerant and returns from the outlet of coil pipe
In closed cans.
It is preferred that the refrigerant outlet of refrigerant storage tank is provided with flow control valve.More preferably, flow control valve and controller
Carry out data exchange.Flow control valve is used to control opening and closing and the size of refrigerant flow of refrigerant outlet, can also be by control
Device processed controls flow control valve.
On the basis of common sense in the field is met, above-mentioned each optimum condition can be combined, and obtain final product each preferable reality of the present invention
Example.
Positive effect of the invention is：
The refrigerating plant, is freezed by using the coil pipe positioned at lower space, can reach temperature point in low temperature memory space
The horizontal homogeneous of cloth and the effect of stable operation, being adjusted flexibly for the temperature of achievable low temperature space, solve cold air or system
Cold medium easily diffuses up the problem of the reliable and stable operation of the mechanical mechanism or automatic mechanism so as to threaten top.
Brief description of the drawings
Fig. 1 is the structural representation of the first implementation method of refrigerating plant of the present invention.
Fig. 2 is the combination diagram of the coil pipe with conductive plate of the refrigerating plant shown in Fig. 1.
Fig. 3 is the structural representation of second implementation method of refrigerating plant of the present invention.
Description of reference numerals
Soak chamber 1
Inner space 11
Locular wall 12
Coil pipe 2
Import 21
Outlet 22
Refrigerant storage tank 3
Refrigerant outlet 31
Coolant channel 4
Conductive plate 5
Circulating refrigerator 6
Circulating line 7
Triple valve 8
Controller 9
Refrigerant-recovery tank 10
Flow control valve 20
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to described reality
Apply among a scope.
As shown in Figure 1 to Figure 3, the present invention provides a kind of refrigerating plant, and it includes that soak chamber 1, coil pipe 2, refrigerant are stored up
Tank 3 and refrigerant recovering apparatus, coil pipe 2 are located at the latter half of the inner space 11 of soak chamber 1, and the import 21 of coil pipe 2 is worn
It is connected with one end of coolant channel 4 after the locular wall 12 for crossing soak chamber 1, the other end and the refrigerant of coolant channel 4 are stored up
The refrigerant outlet 31 of tank 3 is connected, the outlet 22 of coil pipe 2 through after the locular wall 12 of soak chamber 1 with refrigerant recovering apparatus
It is connected.
Refrigerant in refrigerant storage tank 3, coil pipe 2 is entered from refrigerant outlet 31 after coolant channel 4, and refrigerant exists
Flowed in coil pipe 2, the slow convection current of the neighbouring gas of heat transfer and coil pipe 2 by coil pipe 2 carries out the transmission of heat, so as to reach
The purpose of cooling.The refrigerant can be liquid nitrogen, or other refrigerants.
The space that coil pipe 2 is surrounded, for storing sample.Therefore, the cooling of the refrigerating plant is concentrated mainly on coil pipe 2 and surrounds
Space in, the temperature in space that coil pipe 2 is surrounded is very low, and the space temperature of the top of coil pipe 2 is very high, can form larger temperature
Gradient, temperature upper space higher is conducive to the operation of automatic mechanism.
This kind of mode, can not only realize profound hypothermia environment, internal gas flow not resulted in also disorderly, it is to avoid cause sample
The inaccurate problem in position, while good thermograde can be formed so that upper temp is higher, is conducive to automatic mechanism
Operation.
Coil pipe 2 is generally made up of metal material, preferably such as red copper material.The coil pipe 2 of metal material, thermal conductivity is good, energy
Quick and extraneous gas carries out heat exchange.
The import 21 of coil pipe 2 is located at the bottom of coil pipe 2, and the outlet 22 of coil pipe 2 is located at the top of coil pipe 2.Refrigerant is under
It is supreme to be flowed in coil pipe 2, make the temperature of the bottom of coil pipe 2 minimum, the temperature on the top of coil pipe 2 is higher.Therefore, can be according to examination
The temperature of sample demand, the height that selection sample is placed.When the cryogenic temperature of sample demand is relatively low, relatively low position can be positioned over,
When the cryogenic temperature of sample demand is higher, position higher is positioned over.
Conductive plate 5 is provided with the space that coil pipe 2 is surrounded, conductive plate 5 is fitted on coil pipe 2.Conductive plate 5 can be stainless steel
Plate.The space that conductive plate 5 is surrounded as sample placement space, sample is positioned in sample placement space, and conductive plate 5 plays hot friendship
While changing effect, the effect of protection sample is also acted as.
Inner peripheral surface of the coil pipe 2 around the inner space 11 of soak chamber 1 is arranged.The outer peripheral face of coil pipe 2 fits in soak chamber 1
Inner space 11, the space for surrounding coil pipe 2 tries one's best greatly, can store as far as possible many samples.
The refrigerant outlet 31 of refrigerant storage tank 3 is provided with flow control valve 20.Flow control valve 20 enters line number with controller 9
According to exchange.Flow control valve 20 is used to control opening and closing and the size of refrigerant flow of refrigerant outlet 31, meanwhile, can also pass through
Controller 9 controls flow control valve 20.
It is as shown in Figure 1 to Figure 2 the structural representation of the first implementation method of refrigerating plant of the present invention.Refrigerant-recovery
Device is circulating refrigerator 6, and circulating refrigerator 6 is also connected by circulating line 7 with the import 21 of coil pipe 2.Made using circulation
Cold 6, can circulate and constantly be freezed using a certain amount of refrigerant, greatly reduce the consumption of refrigerant, also keep away
Influence of the discharge refrigerant to environment or safety is exempted from.Above-mentioned circulating refrigerator 6, preferably Stirling engine.
The refrigerating plant also includes triple valve 8, two imports of triple valve 8 respectively with coolant channel 4, circulating line 7
It is connected, the outlet of triple valve 8 is connected with the import 21 of coil pipe 2.Wherein, triple valve 8 can carry out data friendship with controller 9
Change, controller 9 is used to control the import 21 of coil pipe 2 to be connected with coolant channel 4 or circulating line 7.
After flowing into a certain amount of refrigerant to coil pipe 2, triple valve 8 manually or controller 9 control, coil pipe
2 import 21 breaks the connection with coolant channel 4, switches to and is connected with circulating line 7, that is, break coil pipe 2 and refrigerant
The connection of the import 21 of the connection of storage tank 3, ON cycle refrigeration machine 6 and coil pipe 2.By the continuous circulation system of circulating refrigerator 6
It is cold to ensure ceaselessly to there is refrigerant to lower the temperature soak chamber 1 in coil pipe 2.
It is illustrated in figure 3 the structural representation of second implementation method of refrigerating plant of the present invention.Refrigerant recovering apparatus
It is refrigerant-recovery tank 10.Refrigerant in refrigerant storage tank 3, coil pipe is entered from refrigerant outlet 31 after coolant channel 4
2, refrigerant is flowed in coil pipe 2, in flowing into refrigerant-recovery tank 10 from the outlet 22 of coil pipe 2.Refrigerant-recovery tank
10 have gas outlet, and into after gas, gas flow to exterior space to refrigerant vapor from gas outlet.
The present invention is not limited to the above-described embodiments, no matter making any change in its shape or structure, all falls within this hair
Within bright protection domain.Protection scope of the present invention is defined by the appended claims, and those skilled in the art exists
On the premise of without departing substantially from principle of the invention and essence, various changes or modifications, but these can be made to these implementation methods
Change and modification each fall within protection scope of the present invention.
Claims (10)
1. a kind of refrigerating plant, it is characterised in that：It includes soak chamber (1), coil pipe (2), refrigerant storage tank (3) and refrigerant
Retracting device, the coil pipe (2) positioned at the latter half of the inner space (11) of the soak chamber (1), the coil pipe (2)
Import (21) is connected through one end afterwards with coolant channel (4) of locular wall (12) of the soak chamber (1), the refrigerant
The other end of passage (4) is connected with the refrigerant outlet (31) of the refrigerant storage tank (3), the outlet of the coil pipe (2)
(22) through being connected with the refrigerant recovering apparatus after the locular wall (12) of the soak chamber (1).
2. refrigerating plant as claimed in claim 1, it is characterised in that：The import (21) of the coil pipe (2) is positioned at the coil pipe
(2) bottom, the top of the outlet (22) of the coil pipe (2) positioned at the coil pipe (2).
3. refrigerating plant as claimed in claim 1, it is characterised in that：Conductive plate is provided with the space that the coil pipe (2) surrounds
(5), the conductive plate (5) is fitted on the coil pipe (2).
4. refrigerating plant as claimed in claim 1, it is characterised in that：Inside of the coil pipe (2) around the soak chamber (1)
The inner peripheral surface arrangement in space (11).
5. refrigerating plant as claimed in claim 1, it is characterised in that：The refrigerant recovering apparatus are circulating refrigerator (6),
The circulating refrigerator (6) is also connected by circulating line (7) with the import (21) of the coil pipe (2).
6. refrigerating plant as claimed in claim 5, it is characterised in that：The refrigerating plant also includes triple valve (8), described three
Two imports of port valve (8) are connected with the coolant channel (4), circulating line (7) respectively, and triple valve (8) go out
Mouth is connected with the import (21) of the coil pipe (2).
7. refrigerating plant as claimed in claim 6, it is characterised in that：The triple valve (8) carries out data friendship with controller (9)
Change.
8. refrigerating plant as claimed in claim 1, it is characterised in that：The refrigerant recovering apparatus are refrigerant-recovery tank
(10)。
9. refrigerating plant as claimed in claim 1, it is characterised in that：The refrigerant outlet (31) of the refrigerant storage tank (3)
It is provided with flow control valve (20).
10. refrigerating plant as claimed in claim 9, it is characterised in that：The flow control valve (20) is carried out with controller (9)
Data exchange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069509.5A CN106839576A (en) | 2017-02-08 | 2017-02-08 | Refrigerating plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710069509.5A CN106839576A (en) | 2017-02-08 | 2017-02-08 | Refrigerating plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106839576A true CN106839576A (en) | 2017-06-13 |
Family
ID=59122144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710069509.5A Pending CN106839576A (en) | 2017-02-08 | 2017-02-08 | Refrigerating plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106839576A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731337A (en) * | 2018-05-21 | 2018-11-02 | 南京申友生物技术有限公司 | A kind of new type low temperature save set of genetic test biomaterial |
| CN111058008A (en) * | 2020-01-16 | 2020-04-24 | 浙江工业大学 | Portable sample platform device of temperature rise or fall based on liquid nitrogen refrigeration |
| CN111757649A (en) * | 2020-07-07 | 2020-10-09 | 珠海格力电器股份有限公司 | Frequency converter with double cooling modes and air conditioner |
| CN113212936A (en) * | 2021-04-27 | 2021-08-06 | 曹高博 | Cell transportation is shifted and is deposited case with low temperature freezing |
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| CN101173834A (en) * | 2007-09-28 | 2008-05-07 | 浙江大学 | Low temperature protectant solution program controlled refrigerating mechanism for vitrified preservation |
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| CN102726368A (en) * | 2012-06-20 | 2012-10-17 | 浙江大学 | Low-temperature preservation solution program-controlled cooling and loading, and re-warming and eluting apparatus |
| CN103069233A (en) * | 2010-08-31 | 2013-04-24 | Bsh博世和西门子家用电器有限公司 | Refrigeration device and method for producing the same |
| CN106016883A (en) * | 2016-05-16 | 2016-10-12 | 广东美的制冷设备有限公司 | Air conditioner device and control method thereof |
| CN205643176U (en) * | 2016-02-01 | 2016-10-12 | 青岛海洋地质研究所 | Hydrate secondary generates risk assessment's visual device in exploitation well casing |
| CN206496565U (en) * | 2017-02-08 | 2017-09-15 | 上海原能细胞医学技术有限公司 | Refrigerating plant |
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2017
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| CN1265399A (en) * | 1999-02-02 | 2000-09-06 | 弗纳技术股份有限公司 | Apparatus and method for pressure propene polymerization reactor |
| CN101173834A (en) * | 2007-09-28 | 2008-05-07 | 浙江大学 | Low temperature protectant solution program controlled refrigerating mechanism for vitrified preservation |
| JP2011117629A (en) * | 2009-12-01 | 2011-06-16 | Hitachi Plant Technologies Ltd | Cooling system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731337A (en) * | 2018-05-21 | 2018-11-02 | 南京申友生物技术有限公司 | A kind of new type low temperature save set of genetic test biomaterial |
| CN111058008A (en) * | 2020-01-16 | 2020-04-24 | 浙江工业大学 | Portable sample platform device of temperature rise or fall based on liquid nitrogen refrigeration |
| CN111757649A (en) * | 2020-07-07 | 2020-10-09 | 珠海格力电器股份有限公司 | Frequency converter with double cooling modes and air conditioner |
| CN113212936A (en) * | 2021-04-27 | 2021-08-06 | 曹高博 | Cell transportation is shifted and is deposited case with low temperature freezing |
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Application publication date: 20170613 |