CN107691629A - A kind of dry ice fruits and vegetables freeze refrigeration system - Google Patents

A kind of dry ice fruits and vegetables freeze refrigeration system Download PDF

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Publication number
CN107691629A
CN107691629A CN201711101871.2A CN201711101871A CN107691629A CN 107691629 A CN107691629 A CN 107691629A CN 201711101871 A CN201711101871 A CN 201711101871A CN 107691629 A CN107691629 A CN 107691629A
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CN
China
Prior art keywords
carbon dioxide
drying box
outlet
vegetables
gas
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
Application number
CN201711101871.2A
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Chinese (zh)
Inventor
宁静红
朱宗升
毛力
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Tianjin University of Commerce
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Tianjin University of Commerce
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Publication date
Application filed by Tianjin University of Commerce filed Critical Tianjin University of Commerce
Priority to CN201711101871.2A priority Critical patent/CN107691629A/en
Publication of CN107691629A publication Critical patent/CN107691629A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23BPRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
    • A23B7/00Preservation or chemical ripening of fruit or vegetables
    • A23B7/02Dehydrating; Subsequent reconstitution
    • A23B7/024Freeze-drying, i.e. cryodessication or lyophilisation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04Drying 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
    • F26B5/06Drying 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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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)

Abstract

The present invention discloses dry ice fruits and vegetables and freezes refrigeration system,The cryogenic carbon dioxide gas dried using drying box is mixed into medium temperature refrigeration compressor with the carbon dioxide of medium temperature gas-liquid separator separates after compression into cryogenic refrigeration compressor,Medium temperature refrigeration compressor discharge carbon dioxide enters condenser/evaporator,Condense the carbon dioxide liquid formed and enter medium temperature gas-liquid separator through medium temperature circulation choke valve reducing pressure by regulating flow,The liquid of separation enters low temperature gas-liquid separator through low-temperature circulating choke valve reducing pressure by regulating flow,The carbon dioxide liquid of low temperature gas-liquid separator separation enters pre-cooling box after spout generation dry ice enters freeze drying box,The gas of separation enters cryogenic refrigeration compressor after being mixed with drying box discharge cryogenic carbon dioxide gas,Dry ice of the fruits and vegetables in pre-cooling box with distillation,It is sent into freeze drying box after cryogenic carbon dioxide gas heat exchange precooling and is contacted with dry ice,It is dewatered freeze-dried.The present invention is realized with dry ice sublimation heat absorption and fruits and vegetables is freezed, and does not have any pollution to food.

Description

A kind of dry ice fruits and vegetables freeze refrigeration system
Technical field
The present invention relates to refrigeration technology field, and in particular to a kind of dry ice fruits and vegetables freeze refrigeration system.
Background technology
Fruits and vegetables are lyophilized to be preserved the long period, and therefore, people have invented fruits and vegetables freeze-drying apparatus to handle fruits and vegetables, and fruits and vegetables freeze Device needs to consume the substantial amounts of energy when working, and current freeze-drying apparatus system complex, energy resource consumption is big, not enough energy-conservation, also not Enough environmental protection.
The content of the invention
In view of the technical drawbacks of the prior art, it is an object of the present invention to provide a kind of energy-saving and environmental protection, cleaning, Refrigeration system is freezed without the dry ice fruits and vegetables of any influence or pollution on fruit-vegetable food and environment.
Technical scheme is used by realize the purpose of the present invention:
A kind of dry ice fruits and vegetables freeze refrigeration system, including:
Cryogenic refrigeration compressor, medium temperature refrigeration compressor, condenser/evaporator, medium temperature circulation choke valve, medium temperature gas-liquid separation Device, low-temperature circulating choke valve, low temperature gas-liquid separator, freeze drying box, pre-cooling box and drying box;The cryogenic refrigeration compressor goes out Mouth divides two-way, and the entrance with medium temperature refrigeration compressor is connected all the way, and the gas vent with medium temperature gas-liquid separator is connected all the way;In The outlet of warm refrigeration compressor and the carbon dioxide entrance of condenser/evaporator connect, the carbon dioxide liquid of condenser/evaporator Outlet is mixed into mouth with the carbon dioxide gas-liquid of medium temperature gas-liquid separator through medium temperature circulation choke valve and is connected, medium temperature gas-liquid separator Carbon dioxide low temperature gas-liquid mixed of the carbon dioxide medium temperature liquid outlet through low-temperature circulating choke valve and low temperature gas-liquid separator Entrance is connected, and the carbon dioxide dry ice outlet of low temperature gas-liquid separator is connected with the dry ice entrance of freeze drying box, low temperature gas-liquid separation The carbon dioxide gas outlet of device is connected with the entrance of cryogenic refrigeration compressor;The carbon dioxide low temperature of the dry ice sublimation of freeze drying box The carbon dioxide entrance of gas vent and pre-cooling box connects, the carbon dioxide outlet of pre-cooling box and the carbon dioxide entrance of drying box Connection, the carbon dioxide outlet of drying box are connected with the entrance of cryogenic refrigeration compressor.
Described dry ice fruits and vegetables freeze refrigeration system, in addition to high-temperature refrigeration compressor and condenser;The high temperature system The outlet of cold compressor and the entrance of condenser connect, height of the outlet through high temperature circulation choke valve and condenser/evaporator of condenser Warm circulating refrigerant liquid inlet connection, high temperature circulation gas vent and the high-temperature refrigeration suction port of compressor of condenser/evaporator connect Connect.
The pre-cooling box has fruits and vegetables entrance and fruits and vegetables outlet, the fruits and vegetables outlet of the pre-cooling box and the fruits and vegetables of freeze drying box Entrance connects, and the freeze drying box has the lyophilized fruits and vegetables outlet of the lyophilized fruits and vegetables collection device of connection.
The drying box includes the first drying box and the second drying box, first drying box, the dioxy of the second drying box Change the carbon dioxide outlet connection through the first magnetic valve, second solenoid valve and pre-cooling box respectively of carbon entrance;First drying box, It is connected after the carbon dioxide outlet parallel connection of second drying box with the entrance of cryogenic refrigeration compressor.
The carbon dioxide outlet of the pre-cooling box is provided with the wet of the gas of the carbon dioxide outlet for detecting pre-cooling box The humidity sensor of degree, for control first magnetic valve and or second solenoid valve open and close, to control first drying box With or the second drying box work.
The drier that can be regularly replaced is provided with first drying box, the second drying box.
Dry ice fruits and vegetables of the present invention freeze refrigeration system, and dry ice is changed into gas under normal temperature and pressure state from solid, and distillation is inhaled Receive substantial amounts of heat, the temperature dramatic decrease of surrounding space, the lyophilized processing that can be achieved to fruits and vegetables of being absorbed heat using dry ice sublimation, dry ice Exchanged heat with direct food contact, there is no any pollution to food.The carbon dioxide of distillation is produced again using kind of refrigeration cycle For dry ice, recycle, there is no any influence, energy-conserving and environment-protective on environment.
Brief description of the drawings
Fig. 1 is that the dry ice fruits and vegetables of the present invention freeze the schematic diagram of refrigeration system.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It is it should be appreciated that described herein Specific embodiment only to explain the present invention, be not intended to limit the present invention.
Shown in Figure 1, a kind of dry ice fruits and vegetables freeze refrigeration system, including:
Cryogenic refrigeration compressor 1, medium temperature refrigeration compressor 2, high-temperature refrigeration compressor 3, condenser 4, high temperature circulation throttling Valve 5, condenser/evaporator 6, medium temperature circulation choke valve 7, medium temperature gas-liquid separator 8, low-temperature circulating choke valve 9, low temperature gas-liquid separation Device 10, freeze drying box 11, pre-cooling box 12, the first magnetic valve 13, second solenoid valve 14, the first drying box 15, the second drying box 16.
The outlet of the cryogenic refrigeration compressor 1 divides two-way, and the entrance with medium temperature refrigeration compressor 2 is connected all the way, all the way It is connected with the gas vent of medium temperature gas-liquid separator 8, the outlet of medium temperature refrigeration compressor 2 and the carbon dioxide of condenser/evaporator 6 Gas access connects, and the carbon dioxide liquid outlet of condenser/evaporator 6 circulates choke valve 7 and medium temperature gas-liquid separator 8 through medium temperature Carbon dioxide gas-liquid be mixed into mouth connection, the carbon dioxide medium temperature liquid outlet of medium temperature gas-liquid separator 8 is through low-temperature circulating section Stream valve 9 is connected with the carbon dioxide low temperature gas-liquid mixed entrance of low temperature gas-liquid separator 10, the dioxy of low temperature gas-liquid separator 10 Change the outlet of carbon dry ice to be connected with the dry ice entrance of freeze drying box 11, the carbon dioxide gas outlet and low temperature of low temperature gas-liquid separator 10 The entrance connection of refrigeration compressor 1;The carbon dioxide cryogenic gas outlet and the two of pre-cooling box 12 of the dry ice sublimation of freeze drying box 11 Carbonoxide entrance connects, and the carbon dioxide outlet of pre-cooling box 12 is dry through the first magnetic valve 13, second solenoid valve 14 and first respectively The carbon dioxide entrance connection of dry case 15, the second drying box 16, the first drying box 15, the carbon dioxide outlet of the second drying box 16 Entrance after parallel connection with cryogenic refrigeration compressor 1 is connected.
The fresh fruits and vegetables entrance is connected with the fruits and vegetables entrance of pre-cooling box 12, the fruits and vegetables outlet of pre-cooling box 12 and freeze drying box 11 fruits and vegetables entrance connection, the fruits and vegetables outlet of freeze drying box 11 are connected with freezing fruits and vegetables collection device.
The outlet of the high-temperature refrigeration compressor 3 is connected with the entrance of condenser 4, and the outlet of condenser 4 is through high temperature circulation Choke valve 5 is connected with the high temperature circulation refrigerant liquid entrance of condenser/evaporator 6, and the high temperature circulation gas of condenser/evaporator 6 goes out Mouth is connected with the entrance of high-temperature refrigeration compressor 3.
The humidity sensor that first magnetic valve 13, second solenoid valve 14 are installed by the carbon dioxide outlet of pre-cooling box 12 Control opens and closes, and the humidity sensor is used for the humidity for detecting the gas of the carbon dioxide outlet of pre-cooling box 12, to control first Drying box 15, the rotation work of the second drying box 16 work simultaneously, when humidity is more than certain value, the first magnetic valve 13 of opening, Second solenoid valve 14, worked simultaneously by first drying box 15, the second drying box 16, conversely, open the first magnetic valve 13 or Second solenoid valve 14, one in first drying box 15, the second drying box 16 is set to be operated, wherein, described first is dry Drier in dry case 15, the second drying box 16 can regularly replace.
Of course, the drying box can also be one, and corresponding magnetic valve is one.
When the system is operated, through the first drying box 15 and or the second drying box 16 dry cryogenic carbon dioxide gas enter Enter cryogenic refrigeration compressor 1, the carbon dioxide isolated after compression with medium temperature gas-liquid separator 8 is mixed into medium temperature system Cold compressor 2, the carbon dioxide that medium temperature refrigeration compressor 2 is discharged enter condenser/evaporator 6, the carbon dioxide liquid of condensation Separated through the medium temperature circulation reducing pressure by regulating flow of choke valve 7 into medium temperature gas-liquid separator 8, the liquid for separating formation throttles through low-temperature circulating The reducing pressure by regulating flow of valve 9, which enters in low temperature gas-liquid separator 10, to be separated, and the gas that low temperature gas-liquid separator 10 is isolated enters low temperature system Cold compressor 1, the carbon dioxide liquid that low temperature gas-liquid separator 10 is isolated enter freeze drying box 11 through spout generation dry ice.It is fresh Fruits and vegetables are in pre-cooling box 12 and the dry ice of distillation, cryogenic carbon dioxide gas heat exchange precooling, the fruits and vegetables after precooling are sent into lyophilized Case 11, contacted in freeze drying box 11 with dry ice, it is dewatered freeze-dried.
Wherein, the high temperature circulation refrigerant gas that high-temperature refrigeration compressor 3 is discharged enters condenser 4, with cooling medium heat The liquid that condensation is formed is exchanged, enter condenser/evaporator 6 through the reducing pressure by regulating flow of high temperature circulation choke valve 5 hands over carbon dioxide stream body heat Heat absorption evaporation is changed, gas enters high-temperature refrigeration compressor 3.
The dry ice fruits and vegetables of the present invention freeze refrigeration system, and dry ice is changed into gas under normal temperature and pressure state from solid, distil Substantial amounts of heat is absorbed, the temperature dramatic decrease of surrounding space, the lyophilized processing that can be achieved to fruits and vegetables of being absorbed heat using dry ice sublimation, is done Ice exchanges heat with direct food contact, does not have any pollution to food.The carbon dioxide of distillation is made again using kind of refrigeration cycle Dry ice is taken as, recycles, does not have any influence, energy-conserving and environment-protective on environment.
Described 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 it should be regarded as protection scope of the present invention.

Claims (6)

1. a kind of dry ice fruits and vegetables freeze refrigeration system, including:
It is cryogenic refrigeration compressor, medium temperature refrigeration compressor, condenser/evaporator, medium temperature circulation choke valve, medium temperature gas-liquid separator, low Temperature circulation choke valve, low temperature gas-liquid separator, freeze drying box, pre-cooling box and drying box;The outlet of the cryogenic refrigeration compressor point Two-way, all the way the entrance with medium temperature refrigeration compressor be connected, the gas vent with medium temperature gas-liquid separator is connected all the way;Medium temperature system The outlet of cold compressor and the carbon dioxide entrance of condenser/evaporator connect, the carbon dioxide liquid outlet of condenser/evaporator Mouth is mixed into through medium temperature circulation choke valve with the carbon dioxide gas-liquid of medium temperature gas-liquid separator to be connected, the two of medium temperature gas-liquid separator Carbon dioxide low temperature gas-liquid mixed entrance of the carbonoxide medium temperature liquid outlet through low-temperature circulating choke valve and low temperature gas-liquid separator Connection, the carbon dioxide dry ice outlet of low temperature gas-liquid separator are connected with the dry ice entrance of freeze drying box, low temperature gas-liquid separator Carbon dioxide gas outlet is connected with the entrance of cryogenic refrigeration compressor;The carbon dioxide cryogenic gas of the dry ice sublimation of freeze drying box Outlet is connected with the carbon dioxide entrance of pre-cooling box, and the carbon dioxide outlet of pre-cooling box and the carbon dioxide entrance of drying box connect Connect, the carbon dioxide outlet of drying box is connected with the entrance of cryogenic refrigeration compressor.
2. dry ice fruits and vegetables as claimed in claim 1 freeze refrigeration system, it is characterised in that also including high-temperature refrigeration compressor and Condenser;The outlet of the high-temperature refrigeration compressor and the entrance of condenser connect, and the outlet of condenser throttles through high temperature circulation The high temperature circulation refrigerant liquid entrance of valve and condenser/evaporator connects, the high temperature circulation gas vent and high temperature of condenser/evaporator Refrigeration compressor entrance connects.
3. dry ice fruits and vegetables as claimed in claim 1 freeze refrigeration system, it is characterised in that the pre-cooling box have fruits and vegetables entrance with And fruits and vegetables outlet, the fruits and vegetables outlet of the pre-cooling box are connected with the fruits and vegetables entrance of freeze drying box, the freeze drying box has connection lyophilized The lyophilized fruits and vegetables outlet of fruits and vegetables collection device.
4. dry ice fruits and vegetables as claimed in claim 1 freeze refrigeration system, it is characterised in that the drying box includes the first drying box With the second drying box, first drying box, the carbon dioxide entrance of the second drying box are respectively through the first magnetic valve, the second electromagnetism The carbon dioxide outlet of valve and pre-cooling box connects;First drying box, the second drying box carbon dioxide outlet parallel connection after with The entrance connection of cryogenic refrigeration compressor.
5. dry ice fruits and vegetables as claimed in claim 4 freeze refrigeration system, it is characterised in that the carbon dioxide outlet of the pre-cooling box The humidity sensor of the humidity of the gas of carbon dioxide outlet for detecting pre-cooling box is installed, for controlling first electricity Magnet valve and or second solenoid valve open and close, with control first drying box and or the second drying box work.
6. dry ice fruits and vegetables as claimed in claim 1 freeze refrigeration system, it is characterised in that first drying box, second are dried The drier that can be regularly replaced is provided with case.
CN201711101871.2A 2017-11-10 2017-11-10 A kind of dry ice fruits and vegetables freeze refrigeration system Pending CN107691629A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711101871.2A CN107691629A (en) 2017-11-10 2017-11-10 A kind of dry ice fruits and vegetables freeze refrigeration system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711101871.2A CN107691629A (en) 2017-11-10 2017-11-10 A kind of dry ice fruits and vegetables freeze refrigeration system

Publications (1)

Publication Number Publication Date
CN107691629A true CN107691629A (en) 2018-02-16

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CN201711101871.2A Pending CN107691629A (en) 2017-11-10 2017-11-10 A kind of dry ice fruits and vegetables freeze refrigeration system

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CN (1) CN107691629A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108870878A (en) * 2018-03-12 2018-11-23 南京航空航天大学 Direct heat pump integrates transformation drying system and method
CN111194768A (en) * 2020-02-24 2020-05-26 浙江山友天然食品有限公司 Method for making dried vegetable
CN114791176A (en) * 2021-01-25 2022-07-26 中华全国供销合作总社南京野生植物综合利用研究所 Fruit and vegetable drying waste heat circulating system based on carbon dioxide as refrigerant

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108870878A (en) * 2018-03-12 2018-11-23 南京航空航天大学 Direct heat pump integrates transformation drying system and method
CN111194768A (en) * 2020-02-24 2020-05-26 浙江山友天然食品有限公司 Method for making dried vegetable
CN114791176A (en) * 2021-01-25 2022-07-26 中华全国供销合作总社南京野生植物综合利用研究所 Fruit and vegetable drying waste heat circulating system based on carbon dioxide as refrigerant
CN114791176B (en) * 2021-01-25 2023-08-29 中华全国供销合作总社南京野生植物综合利用研究所 Fruit and vegetable drying waste heat circulation system based on carbon dioxide as refrigerant

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Application publication date: 20180216