CN104990323B - A kind of jacket type liquid nitrogen spraying cold closet - Google Patents
A kind of jacket type liquid nitrogen spraying cold closet Download PDFInfo
- Publication number
- CN104990323B CN104990323B CN201510438194.8A CN201510438194A CN104990323B CN 104990323 B CN104990323 B CN 104990323B CN 201510438194 A CN201510438194 A CN 201510438194A CN 104990323 B CN104990323 B CN 104990323B
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- CN
- China
- Prior art keywords
- liquid nitrogen
- control valve
- temperature
- detecting device
- oxygen concentration
- 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.)
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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
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B7/00—Preservation or chemical ripening of fruit or vegetables
- A23B7/04—Freezing; Subsequent thawing; Cooling
- A23B7/05—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals other than cryogenics, before or during cooling, e.g. in the form of an ice coating or frozen block
- A23B7/055—Freezing; Subsequent thawing; Cooling with addition of chemicals or treatment with chemicals other than cryogenics, before or during cooling, e.g. in the form of an ice coating or frozen block with direct contact between the food and the chemical, e.g. liquid nitrogen, at cryogenic temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Storage Of Fruits Or Vegetables (AREA)
Abstract
The invention discloses a kind of jacket type liquid nitrogen spraying cold closet, is blown using jacket type, by being sent in refrigerated cabinet evenly of the low temperature nitrogen after liquid nitrogen atomizing spray, realizes lowering temperature uniform in casing.Casing top is separated out chuck layer by dividing plate, has multiple exhaust vents on dividing plate；There are liquid nitrogen spraying device, liquid nitrogen spraying device to be connected with fluid reservoir by water influent pipeline in chuck layer, spray control valve and pressure charging valve are installed in water influent pipeline；There is breeze fan in chuck layer, in chuck layer, have air intake control valve, box bottom to have gas exhausting valve；There are oxygen concentration detection apparatus, temperature-detecting device and pressure-detecting device in fruit and vegetable storage and transportation area in casing；Oxygen concentration detection means, temperature-detecting device, pressure-detecting device, spray control valve, air intake control valve and gas exhausting valve are connected with controller respectively.The cold closet sprays air supply mode using jacket type, and evenly, the setting of dividing plate avoids liquid nitrogen drop and drops on fruit and vegerable, causes cold injury in temperature field.
Description
Technical field
The present invention relates to freezer technical field, in particular, is and a kind of jacket type liquid nitrogen spraying cold closet.
Background technology
Cold closet is important portable instrument during food transport.With the continuous development of the field of circulation, cold closet has
There are extensive market application scenarios.
At present, wide cold closet is applied mostly to be mechanical refrigeration formula or cold storage.Mechanical refrigeration apparatus structure is complicated,
And initial cost is larger；Cold storage temperature field is uneven.With the continuous progress of technology, liquid nitrogen spraying technology is obtained in cold closet field
Application is arrived.But, existing liquid nitrogen spraying cold closet using nozzle directly by liquid nitrogen atomizing spray in envelope, can produce compared with
The fruit and vegerable for storing are produced cold injury, and temperature field are also not uniform enough by many liquid nitrogen droplets.
Content of the invention
The purpose of the present invention is that and it is cold to provide a kind of jacket type liquid nitrogen spraying for technological deficiency present in prior art
Case is hidden, is blown using jacket type, by being sent in refrigerated cabinet evenly of the low temperature nitrogen after liquid nitrogen atomizing spray, is realized case
Internal lowering temperature uniform.
For realizing that the technical scheme adopted by the purpose of the present invention is：
A kind of jacket type liquid nitrogen spraying cold closet, including casing, the casing top is separated out chuck layer by dividing plate, institute
State；Liquid nitrogen spraying device is installed in the chuck layer, the liquid nitrogen spraying device passes through
Water influent pipeline is connected with fluid reservoir, is provided with spray control valve and pressure charging valve in the water influent pipeline；Install in the chuck layer
There is breeze fan, in the chuck layer, be provided with the air intake control valve being in communication with the outside, the box bottom is provided with aerofluxuss control
Valve processed；Fruit and vegetable storage and transportation area in the casing is provided with oxygen concentration detection means, temperature-detecting device and pressure-detecting device；
The oxygen concentration detection means, temperature-detecting device, pressure-detecting device, spray control valve, air intake control valve and aerofluxuss control
Valve processed is connected with controller respectively；When the temperature value of temperature-detecting device detection is more than or equal to setting value, then detect
Oxygen density value, if the oxygen concentration of oxygen concentration detection arrangement monitors is more than or equal to setting value, controller is controlled
Spray control valve carries out nitrogen charging to box house, if the oxygen concentration of oxygen concentration detection arrangement monitors is less than setting value,
While spray control valve is opened then open air intake control valve；When the temperature value of temperature-detecting device monitoring is less than or equal to setting
During value, then spray control valve is closed, stops nitrogen charging；If pressure-detecting device monitors that the pressure in fruit and vegetable storage and transportation area is more than air
During pressure, then open gas exhaust inspecting valve exhaust.
The spray equipment includes the liquid nitrogen pipeline being installed in the chuck layer and multiple atomizers, the atomization spray
The liquid nitrogen that mouth sprays sends into the fruit and vegetable storage and transportation area in casing by the effect of the breeze fan.
The oxygen concentration detection means is oxygen concentration sensor；The temperature-detecting device is temperature sensor；Institute
Pressure-detecting device is stated for pressure transducer.
The atomizer is hollow tapered atomizer.
It is both needed to superscribe insulation material on the liquid nitrogen pipeline.
Compared with prior art, the invention has the beneficial effects as follows：
1st, cold closet of the invention sprays air supply mode using jacket type, makes compartment body temperature field more uniform.
2nd, cold closet of the invention is separated out chuck layer using spray air supply mode by dividing plate, and the setting of dividing plate is avoided
Liquid nitrogen drop is dropped on fruit and vegerable, causes cold injury.
3rd, cold closet of the invention adopts liquid nitrogen spraying mode, by controlling oxygen concentration and temperature so that higher concentration
Nitrogen inhibit the Repiration of fruit and vegerable, preferable controlled atmosphere effect can be played.
Description of the drawings
Fig. 1 show the structural representation of jacket type liquid nitrogen spraying cold closet of the present invention.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Jacket type liquid nitrogen spraying cold closet of the present invention, including casing 1, is separated out chuck by dividing plate 3 at the top of the casing 1
Layer, is provided with multiple exhaust vents on the dividing plate 3.Liquid nitrogen spraying device is installed in the chuck layer.The liquid nitrogen spraying dress
Put and be connected with fluid reservoir 10 by water influent pipeline, spray control valve 8 and pressure charging valve 9 are installed in the water influent pipeline.The folder
Breeze fan 2 is installed in jacket layer, the air intake control valve 6 being in communication with the outside, 1 bottom of the casing in the chuck layer, is provided with
It is provided with gas exhausting valve 13.Fruit and vegetable storage and transportation area in the casing 1 is provided with oxygen concentration detection means 11, temperature detection dress
Put 12 and pressure-detecting device.The oxygen concentration detection means 11, temperature-detecting device 12, pressure-detecting device, spray control
Valve processed 8, air intake control valve 6 and gas exhausting valve 13 are connected with controller 7 respectively.Temperature when the detection of the temperature-detecting device 12
When angle value is more than or equal to setting value, then oxygen density value is detected, if the oxygen concentration of the monitoring of oxygen concentration detection means 11
During more than or equal to setting value, then the control of controller 7 spray control valve 8 carries out nitrogen charging to box house, if oxygen concentration inspection
When the oxygen concentration of the monitoring of device 11 is surveyed less than setting value, then open air intake control valve 6 while opening spray control valve 8.When
When the temperature value of the monitoring of temperature-detecting device 12 is less than or equal to setting value, then spray control valve 8 is closed, stops nitrogen charging.If pressure
When force checking device monitors that the pressure in fruit and vegetable storage and transportation area is more than atmospheric pressure, then open 13 aerofluxuss of gas exhausting valve.
In the present embodiment, the spray equipment includes the liquid nitrogen pipeline 4 being installed in the chuck layer and multiple atomization sprays
Mouth 5, the liquid nitrogen that the atomizer 5 sprays send into the fruit and vegetable storage and transportation area in casing by the effect of the breeze fan 2.In order to
The uniform temperature fields in casing are made, liquid nitrogen drop is unlikely to be dropped in formation cold injury on fruit and vegerable, is both needed to wrap up on the liquid nitrogen pipeline
Upper insulation material.The preferably hollow tapered atomizer of the atomizer.
In the present embodiment, the oxygen concentration detection means 11 is oxygen concentration sensor；The temperature-detecting device 12
For temperature sensor；The pressure-detecting device is pressure transducer.
Liquid nitrogen atomized drop from after nozzle ejection, by being capable of the jacket type air supply mode of more uniform air-supply, not only will be compared with
It is relatively decentralized uniform that intensive liquid nitrogen drop blows, and vaporizes partial drop.The mode that is blown with jacket type is to liquid nitrogen spraying
Air-supply, solves the problems, such as that case body temperature field is uneven, and avoids cold injury of the low temperature liquid nitrogen drop to fruit and vegerable.
When the temperature value of the temperature sensor monitors in fruit and vegetable storage and transportation area is higher than setting value, oxygen concentration sensor monitoring
Oxygen density value is more than or equal to setting value, then controller control spray control valve goes out liquid；If oxygen concentration sensor monitoring
Oxygen density value is less than setting value, then open air intake control valve while opening spray control valve.If temperature sensor detection
Temperature value is less than or equal to setting value, then close spray control valve, stop nitrogen charging；If the temperature value of temperature sensor detection is more than
Or be equal to setting value, then detect oxygen density value.If the temperature value of temperature sensor monitors is less than or equal to setting value, stop filling
Nitrogen.If the pressure in fruit and vegetable storage and transportation area is more than atmospheric pressure, gas exhaust inspecting valve exhaust is opened.So go round and begin again.
The above is only the preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications
Also protection scope of the present invention should be regarded as.
Claims (2)
1. a kind of jacket type liquid nitrogen spraying cold closet, including casing, it is characterised in that the casing top is separated out by dividing plate
Chuck layer, is provided with multiple exhaust vents on the dividing plate；Liquid nitrogen spraying device, the liquid nitrogen spraying are installed in the chuck layer
Device is connected with fluid reservoir by water influent pipeline, is provided with spray control valve and pressure charging valve in the water influent pipeline；The chuck
Breeze fan is installed in layer, in the chuck layer, is provided with the air intake control valve being in communication with the outside, the box bottom is arranged
There is gas exhausting valve；Fruit and vegetable storage and transportation area in the casing is provided with oxygen concentration detection means, temperature-detecting device and pressure
Detection means；The oxygen concentration detection means, temperature-detecting device, pressure-detecting device, spray control valve, air intake control valve
It is connected with controller with gas exhausting valve respectively；When the temperature value of temperature-detecting device detection is more than or equal to setting value
When, then oxygen density value is detected, if the oxygen concentration of oxygen concentration detection arrangement monitors is more than or equal to setting value, controlled
Device control spray control valve processed carries out nitrogen charging to box house, if the oxygen concentration of oxygen concentration detection arrangement monitors is less than set
During definite value, then air intake control valve is opened while opening spray control valve；When temperature-detecting device monitoring temperature value less than or
When being equal to setting value, then spray control valve is closed, stops nitrogen charging；If pressure-detecting device monitors the pressure in fruit and vegetable storage and transportation area
During more than atmospheric pressure, then open gas exhaust inspecting valve exhaust；The spray equipment includes the liquid nitrogen pipe being installed in the chuck layer
Road and multiple atomizers, the liquid nitrogen that the atomizer sprays send into the fruit and vegerable in casing by the effect of the breeze fan
Storing area；Insulation material is enclosed with the liquid nitrogen pipeline.
2. jacket type liquid nitrogen spraying cold closet according to claim 1, it is characterised in that the atomizer is hollow cone
Type atomizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510438194.8A CN104990323B (en) | 2015-07-23 | 2015-07-23 | A kind of jacket type liquid nitrogen spraying cold closet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510438194.8A CN104990323B (en) | 2015-07-23 | 2015-07-23 | A kind of jacket type liquid nitrogen spraying cold closet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104990323A CN104990323A (en) | 2015-10-21 |
| CN104990323B true CN104990323B (en) | 2017-03-15 |
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ID=54302172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510438194.8A Expired - Fee Related CN104990323B (en) | 2015-07-23 | 2015-07-23 | A kind of jacket type liquid nitrogen spraying cold closet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104990323B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091550A (en) * | 2016-02-18 | 2017-08-25 | 顺丰速运有限公司 | Thesaurus system, thesaurus refrigerating method and repository device |
| CN106342495A (en) * | 2016-08-19 | 2017-01-25 | 广东锐捷安全技术股份有限公司 | Intelligent warehouse air passage circulation system |
| CN106358612A (en) * | 2016-08-19 | 2017-02-01 | 广东锐捷安全技术股份有限公司 | Intelligent ecological fresh-keeping warehouse system |
| TW201832036A (en) * | 2017-02-24 | 2018-09-01 | 進得展有限公司 | Cooling Method and Cooling Device |
| TWI655401B (en) * | 2017-09-07 | 2019-04-01 | 進得展有限公司 | Refrigeration device and temperature control module thereof |
| CN108826740B (en) * | 2018-05-14 | 2020-11-13 | 航天新长征电动汽车技术有限公司 | Shower nozzle, fountain liquid nitrogen refrigerating system and refrigerator car |
| CN109910723A (en) * | 2019-04-09 | 2019-06-21 | 天津商业大学 | A kind of liquid nitrogen storage vehicle with temperature difference electricity generation device |
| CN110762923A (en) * | 2019-11-26 | 2020-02-07 | 合肥美科制冷技术有限公司 | Control method of energy-saving refrigerator and refrigerator |
| CN111023867B (en) * | 2019-12-18 | 2021-05-25 | 西南石油大学 | Low temperature liquid nitrogen heat exchanger with adjustable difference in temperature |
| CN111232388A (en) * | 2020-03-03 | 2020-06-05 | 江苏师范大学 | Express delivery fridge based on liquid nitrogen refrigeration |
| CN112146317A (en) * | 2020-09-25 | 2020-12-29 | 上海依牛依羊食品有限公司 | Quick freezing device of meat food processing usefulness |
| CN115142890B (en) * | 2022-08-09 | 2023-05-12 | 中国矿业大学 | Cooling and oxygen supplying system for deep high-temperature heat damage underground space |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1027801C (en) * | 1993-05-18 | 1995-03-08 | 石家庄市仓安实业总公司 | Fresh-preserving container |
| CN2167969Y (en) * | 1993-09-27 | 1994-06-08 | 殷小平 | Air-conditioning fresh reservation container for fruit and vegetable |
| CN2199157Y (en) * | 1994-07-07 | 1995-05-31 | 北京市雪龙制冷科技发展总公司 | Container for refrigerating and transporting liquid nitrogen |
| JP3610487B2 (en) * | 2001-10-17 | 2005-01-12 | 有限会社日本食品工学協議会 | Food preservation method and apparatus |
| CN2922483Y (en) * | 2005-06-30 | 2007-07-18 | 郑先章 | Vacuum fast-cooling apparatus capable of preventing freeze injury |
| JP2010213600A (en) * | 2009-03-16 | 2010-09-30 | Panasonic Corp | Method and apparatus for storing food |
| CN103478231B (en) * | 2013-09-18 | 2016-03-02 | 梓潼锦城商贸有限公司 | A kind of air-conditioned cold store |
| CN204923621U (en) * | 2015-07-23 | 2015-12-30 | 天津商业大学 | It sprays cold -stored case to press from both sides shell type liquid nitrogen |
-
2015
- 2015-07-23 CN CN201510438194.8A patent/CN104990323B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN104990323A (en) | 2015-10-21 |
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Granted publication date: 20170315 Termination date: 20180723 |
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