CN109341170A - A kind of radiator for intelligent industrial equipment - Google Patents
A kind of radiator for intelligent industrial equipment Download PDFInfo
- Publication number
- CN109341170A CN109341170A CN201811224229.8A CN201811224229A CN109341170A CN 109341170 A CN109341170 A CN 109341170A CN 201811224229 A CN201811224229 A CN 201811224229A CN 109341170 A CN109341170 A CN 109341170A
- Authority
- CN
- China
- Prior art keywords
- motor
- valve
- liquid nitrogen
- driven valve
- nitrogen
- 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
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 222
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 111
- 239000007788 liquid Substances 0.000 claims abstract description 101
- 238000003860 storage Methods 0.000 claims abstract description 31
- 238000010521 absorption reaction Methods 0.000 claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 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
- 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
-
- 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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/008—Alarm devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
- F28D2021/0029—Heat sinks
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a kind of radiators for intelligent industrial equipment, including display screen, PLC control system, temperature sensor, liquid feed valve, air outlet valve, nitrogen monitor, alarm, liquid nitrogen storage case, motor-driven valve one, liquid nitrogen uses tank, inlet tube, liquid nitrogen monitor, motor-driven valve two, nitrogen storage tank, air inlet pipe, pressure detector, motor-driven valve three, from pressurization liquid nitrogen container, heat absorption device and installed cassette, the display screen is connected with PLC control system, and PLC control system respectively with liquid feed valve, air outlet valve, alarm, motor-driven valve one, motor-driven valve two and motor-driven valve three are directly electrically connected, the temperature sensor and nitrogen monitor are connected by electric signal with PLC control system.This is used for the radiator of intelligent industrial equipment, carries out cold and hot exchange by heat absorption device using liquid nitrogen, both improves radiating rate in this way, in turn ensure and carry out in the environment of closing, avoid dust from entering inside equipment, impact.
Description
Technical field
The present invention relates to intelligent industrial equipment technical field, specially a kind of radiator for intelligent industrial equipment.
Background technique
Intelligent industrial is each Terminal Type that will have environment sensing ability, the calculating mode based on ubiquitous technology, moves and lead to
Letter etc. is constantly dissolved into industrial links, greatly improves manufacture efficiency, improves product quality, reduce product cost and
Resource consumption promotes traditional industry to the intelligentized new stage.With the development of economy with the progress of science and technology, intelligent industrial set
Standby to occur on the market, due to industrial equipment heavy workload, the heat for needing to distribute is more, in order to ensure that equipment works normally, needs
Radiating and cooling is carried out to equipment.
Existing radiator be mostly carried out using wind energy and water cooling heat exchange (Fig. 5 be existing wind energy heat dissipation system
System figure, Fig. 6 are existing water-cooling heat radiating system figure), but such method radiating rate is slow, the energy of low efficiency, consuming is more, leads
It causes equipment use cost to increase, moreover, radiating using wind, inevitably carries dust, make the electronics inside equipment
Element poor contact.
Summary of the invention
The purpose of the present invention is to provide a kind of radiators for intelligent industrial equipment, to solve above-mentioned background technique
It proposes existing radiator mostly and is to carry out heat exchange using wind energy and water cooling, but such method radiating rate
Slowly, the energy of low efficiency, consuming is more, causes equipment use cost to increase, moreover, radiating using wind, inevitably
The problem of carrying dust, making the electronic component poor contact inside equipment.
To achieve the above object, the invention provides the following technical scheme: a kind of radiator for intelligent industrial equipment,
Including display screen, PLC control system, temperature sensor, liquid feed valve, air outlet valve, nitrogen monitor, alarm, liquid nitrogen storage case,
Motor-driven valve one, liquid nitrogen using tank, inlet tube, liquid nitrogen monitor, motor-driven valve two, nitrogen storage tank, air inlet pipe, pressure detector,
Motor-driven valve three is connected from pressurization liquid nitrogen container, heat absorption device and installed cassette, the display screen with PLC control system, and
PLC control system directly electrically connects with liquid feed valve, air outlet valve, alarm, motor-driven valve one, motor-driven valve two and motor-driven valve three respectively
It connects, the temperature sensor and nitrogen monitor are connected by electric signal with PLC control system.
Preferably, the display screen, PLC control system, temperature sensor, liquid feed valve, air outlet valve, nitrogen monitor, report
Alert device, motor-driven valve one, liquid nitrogen monitor, motor-driven valve two, air inlet pipe, pressure detector, motor-driven valve three and from pressurization liquid nitrogen container it
Between connection type be disposed as being electrically connected.
Preferably, the liquid feed valve and air outlet valve are disposed as electrically operated valve, and liquid feed valve, air outlet valve, motor-driven valve one, electricity
Dynamic valve two and motor-driven valve three are disposed as one-way cock.
Preferably, one left and right ends of motor-driven valve are connected with liquid nitrogen storage case and liquid nitrogen using tank respectively by pipeline
It connects, and liquid nitrogen is provided with liquid outlet using pot bottom, the liquid nitrogen is connected by pipeline with the left end of liquid feed valve using pot bottom
It connects, and liquid nitrogen is provided with inlet tube, and inlet tube and electricity using tank top using liquid nitrogen monitor, the liquid nitrogen is equipped on tank
Dynamic three left end of valve is connected, and three right end of motor-driven valve is connected by pipeline with from pressurization liquid nitrogen container.
Preferably, the liquid nitrogen monitor includes level monitoring and pressure monitoring.
Preferably, two left and right ends of motor-driven valve are connected with from pressurization liquid nitrogen container and nitrogen storage tank respectively by pipeline
It connecing, and nitrogen storage pot bottom is provided with gas outlet, the nitrogen storage pot bottom is connected by pipeline with motor-driven valve two, and
Pressure detector is installed on nitrogen storage tank, the nitrogen storage tank top is sealedly connected with air inlet pipe, and air inlet pipe with go out
Air valve right end is connected.
Preferably, the heat absorption equipment matter is set as aluminium, and heat absorption device is set as tailor-made type device, the heat
Amount absorber is placed in inside industrial equipment, and heat absorption device left and right ends by pipeline respectively with liquid feed valve and air outlet valve phase
Connection.
Compared with prior art, the beneficial effects of the present invention are: the radiator for being used for intelligent industrial equipment,
(1) cold and hot exchange is carried out by heat absorption device using liquid nitrogen, both improves radiating rate in this way, in turn ensures and sealing
It is carried out in the environment of closing, dust is avoided to enter inside equipment, impacted；
(2) it is then converted to liquid nitrogen by the nitrogen converted after heat is absorbed using from pressurization liquid nitrogen container, had both avoided air dirt in this way
Dye, and make resource reutilization, it avoids wasting, reduces equipment use cost.
(3) heat absorption equipment matter is set as aluminium, and the heat absorption capacity of aluminium is good, is also less prone to aoxidize, moreover, heat absorption device is set
It is set to tailor-made type device, heat absorption device is placed in inside industrial equipment, size can be actually needed according to equipment to make heat
Absorber is measured, to reduce consumptive material.
Detailed description of the invention
Fig. 1 is a kind of radiator schematic diagram for intelligent industrial equipment of the present invention；
Fig. 2 is a kind of structural system figure of the radiator for intelligent industrial equipment of the present invention；
Fig. 3 is a kind of display panel positive structure schematic for intelligent industrial equipment of the present invention；
Fig. 4 is that a kind of system for intelligent industrial equipment of the present invention runs block diagram；
Fig. 5 is a kind of existing wind energy cooling system figure for intelligent industrial equipment of the present invention；
Fig. 6 is a kind of existing water-cooling heat radiating system figure for intelligent industrial equipment of the present invention.
In figure: 1, display screen, 2, PLC control system, 3, temperature sensor, 4, liquid feed valve, 5, air outlet valve, 6, nitrogen monitoring
Device, 7, alarm, 8, liquid nitrogen storage case, 9, motor-driven valve one, 10, liquid nitrogen use tank, 11, inlet tube, 12, liquid nitrogen monitor, 13,
Motor-driven valve two, 14, nitrogen storage tank, 15, air inlet pipe, 16, pressure detector, 17, motor-driven valve three, 18, certainly pressurization liquid nitrogen container,
19, heat absorption device, 20, installed cassette.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-3 is please referred to, the present invention provides a kind of technical solution: a kind of radiator for intelligent industrial equipment, packet
Include display screen 1, PLC control system 2, temperature sensor 3, liquid feed valve 4, air outlet valve 5, nitrogen monitor 6, alarm 7, liquid nitrogen storage
Deposit case 8, motor-driven valve 1, liquid nitrogen using tank 10, inlet tube 11, liquid nitrogen monitor 12, motor-driven valve 2 13, nitrogen storage tank 14, into
Tracheae 15, pressure detector 16, motor-driven valve 3 17, certainly pressurization liquid nitrogen container 18, heat absorption device 19 and installed cassette 20, it is described aobvious
Display screen 1 is connected with PLC control system 2, and PLC control system 2 respectively with liquid feed valve 4, air outlet valve 5, alarm 7, motor-driven valve
One 9, motor-driven valve 2 13 and motor-driven valve 3 17 are directly electrically connected, and the temperature sensor 3 and nitrogen monitor 6 pass through electric signal
It is connected with PLC control system 2；
It is display screen 1, PLC control system 2, temperature sensor 3, liquid feed valve 4, air outlet valve 5, nitrogen monitor 6, alarm 7, electronic
Valve 1, liquid nitrogen monitor 12, motor-driven valve 2 13, air inlet pipe 15, pressure detector 16, motor-driven valve 3 17 and from pressurization liquid nitrogen container
Connection type between 18 is disposed as being electrically connected.
Liquid feed valve 4 and air outlet valve 5 are disposed as electrically operated valve, and liquid feed valve 4, air outlet valve 5, motor-driven valve 1, motor-driven valve two
13 and motor-driven valve 3 17 be disposed as one-way cock.
One 9 left and right ends of motor-driven valve are connected with liquid nitrogen storage case 8 and liquid nitrogen using tank 10 respectively by pipeline, and liquid nitrogen
10 bottom of tank is provided with liquid outlet, the liquid nitrogen is connected by pipeline with the left end of liquid feed valve 4 using 10 bottom of tank, and
Liquid nitrogen is using being equipped with liquid nitrogen monitor 12 on tank 10, the liquid nitrogen is using being provided with inlet tube 11, and inlet tube at the top of tank 10
11 are connected with 3 17 left end of motor-driven valve, and 3 17 right end of motor-driven valve is connected by pipeline with from pressurization liquid nitrogen container 18.
Liquid nitrogen monitor 12 includes that level monitoring and pressure monitor.
2 13 left and right ends of motor-driven valve are connected with from pressurization liquid nitrogen container 18 and nitrogen storage tank 14 respectively by pipeline, and
14 bottom of nitrogen storage tank is provided with gas outlet, and 14 bottom of nitrogen storage tank is connected by pipeline with motor-driven valve 2 13,
And pressure detector 16 is installed on nitrogen storage tank 14, air inlet pipe 15 is sealedly connected at the top of the nitrogen storage tank 14, and
Air inlet pipe 15 is connected with 5 right end of air outlet valve.
19 material of heat absorption device is set as aluminium, and heat absorption device 19 is set as tailor-made type device, the heat absorption
Device 19 is placed in inside industrial equipment, and 19 left and right ends of heat absorption device by pipeline respectively with 5 phase of liquid feed valve 4 and air outlet valve
Connection.
The working principle of the present embodiment: when being used for the radiator of intelligent industrial equipment using this, temperature sensing first
Equipment internal temperature is passed to PLC control system 2 by electric signal by device 3, and PLC control system 2 receives signal, and feeds back and arrive
Display screen 1, meanwhile, information is handled, if temperature is excessively high, controls the opening of liquid feed valve 4, liquid nitrogen uses 10 bottom of tank from liquid nitrogen
Portion's pipeline flows into inside heat absorption device 19 by liquid feed valve 4, after after one minute, opens air outlet valve 5, liquid nitrogen absorbs heat
The heat of absorber 19, is converted into nitrogen, by air outlet valve 5, nitrogen storage tank 14 is flowed into from air inlet pipe 15, when liquid nitrogen monitor
12 when monitoring that liquid level is too low, and motor-driven valve 1 is opened in the control of PLC control system 2, and the liquid nitrogen in liquid nitrogen storage case 8 is by electronic
Valve 1 flows into liquid nitrogen from pipeline and opens motor-driven valve 2 13 using tank 10 or the control of PLC control system 2, and nitrogen is from nitrogen storage
14 bottom of tank flows into from pressurization liquid nitrogen container 18 by motor-driven valve 2 13, is converted to liquid nitrogen, then open motor-driven valve 3 17, liquid nitrogen
Liquid nitrogen is flowed into using, for using, when nitrogen monitor 6 monitors the nitrogen of leakage, nitrogen is supervised in tank 10 by inlet tube 11
It surveys device 6 and translates the information into electric signal and pass to PLC control system 2,2 alarm for opening 7 of PLC control system reminds work people
Member is that the content that is not described in detail belongs to this field profession skill in the use process and this specification of whole device above
The prior art well known to art personnel.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (7)
1. a kind of radiator for intelligent industrial equipment, including display screen (1), PLC control system (2), temperature sensor
(3), liquid feed valve (4), air outlet valve (5), nitrogen monitor (6), alarm (7), liquid nitrogen storage case (8), motor-driven valve one (9), liquid
Nitrogen uses tank (10), inlet tube (11), liquid nitrogen monitor (12), motor-driven valve two (13), nitrogen storage tank (14), air inlet pipe
(15), pressure detector (16), motor-driven valve three (17), certainly pressurization liquid nitrogen container (18), heat absorption device (19) and installed cassette
(20), it is characterised in that: the display screen (1) is connected with PLC control system (2), and PLC control system (2) respectively with into
Liquid valve (4), air outlet valve (5), alarm (7), motor-driven valve one (9), motor-driven valve two (13) and motor-driven valve three (17) directly electrically connect
It connects, the temperature sensor (3) and nitrogen monitor (6) are connected by electric signal with PLC control system (2).
2. a kind of radiator for intelligent industrial equipment according to claim 1, it is characterised in that: the display screen
(1), PLC control system (2), temperature sensor (3), liquid feed valve (4), air outlet valve (5), nitrogen monitor (6), alarm (7),
Motor-driven valve one (9), liquid nitrogen monitor (12), motor-driven valve two (13), air inlet pipe (15), pressure detector (16), motor-driven valve three
(17) and from the connection type between pressurization liquid nitrogen container (18) it is disposed as being electrically connected.
3. a kind of radiator for intelligent industrial equipment according to claim 1, it is characterised in that: the liquid feed valve
(4) and air outlet valve (5) is disposed as electrically operated valve, and liquid feed valve (4), air outlet valve (5), motor-driven valve one (9), motor-driven valve two (13)
One-way cock is disposed as with motor-driven valve three (17).
4. a kind of radiator for intelligent industrial equipment according to claim 3, it is characterised in that: the motor-driven valve
One (9) left and right ends are connected with liquid nitrogen storage case (8) and liquid nitrogen using tank (10) respectively by pipeline, and liquid nitrogen uses tank
(10) bottom is provided with liquid outlet, and the liquid nitrogen is connected by pipeline with the left end of liquid feed valve (4) using tank (10) bottom, and
For liquid nitrogen using being equipped with liquid nitrogen monitor (12) on tank (10), the liquid nitrogen is provided with inlet tube (11) using tank (10) top,
And inlet tube (11) is connected with motor-driven valve three (17) left end, motor-driven valve three (17) right end passes through pipeline and pressurization liquid nitrogen certainly
Tank (18) is connected.
5. a kind of radiator for intelligent industrial equipment according to claim 3, it is characterised in that: the liquid nitrogen prison
Surveying device (12) includes level monitoring and pressure monitoring.
6. a kind of radiator for intelligent industrial equipment according to claim 1, it is characterised in that: the motor-driven valve
Two (13) left and right ends are connected with from pressurization liquid nitrogen container (18) and nitrogen storage tank (14) respectively by pipeline, and nitrogen storage
Tank (14) bottom is provided with gas outlet, and nitrogen storage tank (14) bottom is connected by pipeline with motor-driven valve two (13), and
It is equipped on nitrogen storage tank (14) pressure detector (16), is sealedly connected with air inlet pipe at the top of the nitrogen storage tank (14)
(15), and air inlet pipe (15) is connected with air outlet valve (5) right end.
7. a kind of radiator for intelligent industrial equipment according to claim 1, it is characterised in that: the heat is inhaled
It receives device (19) material and is set as aluminium, and heat absorption device (19) is set as tailor-made type device, heat absorption device (19) placement
In inside industrial equipment, and heat absorption device (19) left and right ends are connected with liquid feed valve (4) and air outlet valve (5) respectively by pipeline
It connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811224229.8A CN109341170A (en) | 2018-10-19 | 2018-10-19 | A kind of radiator for intelligent industrial equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811224229.8A CN109341170A (en) | 2018-10-19 | 2018-10-19 | A kind of radiator for intelligent industrial equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109341170A true CN109341170A (en) | 2019-02-15 |
Family
ID=65310517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811224229.8A Pending CN109341170A (en) | 2018-10-19 | 2018-10-19 | A kind of radiator for intelligent industrial equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109341170A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0611933A2 (en) * | 1993-02-17 | 1994-08-24 | Air Products And Chemicals, Inc. | Method and apparatus for freezing |
| CN202908833U (en) * | 2012-11-21 | 2013-05-01 | 湖南爱芷生医疗科技有限公司 | Self-pressurization liquid nitrogen tank for cold therapy machine |
| CN203786645U (en) * | 2014-04-26 | 2014-08-20 | 安磊 | Liquid nitrogen mainboard heat dissipation type computer case |
| CN105526500A (en) * | 2016-01-08 | 2016-04-27 | 上海启元空分技术发展股份有限公司 | Liquid nitrogen recovering device and method |
-
2018
- 2018-10-19 CN CN201811224229.8A patent/CN109341170A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0611933A2 (en) * | 1993-02-17 | 1994-08-24 | Air Products And Chemicals, Inc. | Method and apparatus for freezing |
| CN202908833U (en) * | 2012-11-21 | 2013-05-01 | 湖南爱芷生医疗科技有限公司 | Self-pressurization liquid nitrogen tank for cold therapy machine |
| CN203786645U (en) * | 2014-04-26 | 2014-08-20 | 安磊 | Liquid nitrogen mainboard heat dissipation type computer case |
| CN105526500A (en) * | 2016-01-08 | 2016-04-27 | 上海启元空分技术发展股份有限公司 | Liquid nitrogen recovering device and method |
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Application publication date: 20190215 |