CN103090621A - Method for preserving foods through refrigerator - Google Patents
Method for preserving foods through refrigerator Download PDFInfo
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- CN103090621A CN103090621A CN2012104088794A CN201210408879A CN103090621A CN 103090621 A CN103090621 A CN 103090621A CN 2012104088794 A CN2012104088794 A CN 2012104088794A CN 201210408879 A CN201210408879 A CN 201210408879A CN 103090621 A CN103090621 A CN 103090621A
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Abstract
The invention relates to a method for preserving foods through a refrigerator. The refrigerator comprises a plurality of storage chambers and a nitrogen oxygen separation device, wherein an air inlet of the nitrogen oxygen separation device is communicated with air outlets of the storage chambers; a fresh gas outlet is communicated with air inlets of the storage chambers through a vacuum pump; the storage chambers are sealed and separated from each other and are respectively provided with storage chamber doors capable of closing the storage chambers; each storage chamber is respectively provided with an air outlet and an air inlet; the vacuum pump is started, air is separated by the nitrogen oxygen separation device, the separated nitrogen-enriched fresh gas enters the storage chambers through air inlets of the storage chambers, and oxygen-enriched gas in the storage chambers is discharged through the air outlets of the storage chambers and circularly enters the nitrogen oxygen separation device, so that the storage chambers are filled with the nitrogen-enriched fresh gas due to the cycle finally. By the method, each closed storage chamber is independently controlled, gas replacement can be performed, and the method has the advantages that the preservation time is prolonged, the preservation quality is improved, the energy consumption is reduced, and cross-contamination of foods is reduced.
Description
Technical field
The present invention relates to a kind of method with fridge freshness retaining food, relate in particular to a kind of food fridge freshness retaining method that improves the food fresh-keeping degree by regulating gas componant content in the cold compartment of refrigerator space.
Background technology
Current, family or market are used for the refrigerator (refrigerator-freezer) of food fresh keeping, are mainly to utilize falling temperature technique, build the fresh-keeping environments of a low temperature in refrigerator or refrigerator-freezer, thereby food are carried out fresh-keeping, and in general, temperature is lower, and fresh keeping time is longer.But there are many deficiencies in this existing fresh-keeping mode.On the one hand, fresh keeping time requires longer, and is temperature required just lower, thereby wastes energy; On the other hand, because the oxygen composition and the air that contain in fresh-keeping environments are basic identical, to making the easy oxidation deterioration of food; Again on the one hand, food gives out, and various gas and the organic gas smelt reside in for a long time and can not get displacement in fresh-keeping environments, have both caused the cross pollution of food, make again fresh keeping time shorten.
Chinese invention patent application Publication Specification CN101368781A discloses a kind of fresh-keeping refrigerator, referring to Fig. 1, be provided with cooling space 15 and deaerating plant 1, deaerating plant 1 is located at outside refrigerator cooling space 15, one solid oxide electrolyte plate is separated out airtight deoxygenation district in deaerating plant 1 shell, the deoxygenation district is by advancing, escape pipe 11, 12 corresponding the going out of refrigerator cooling space 15 that connect, air inlet, the deoxygenation district is advanced, escape pipe 11, 12 are communicated with respectively the heating tube of a heat exchanger 16, cooling tube, heat exchanger uses the high metal of heat conduction efficiency to make, adopt sleeve structure, its outer heating tube is communicated with between the air inlet pipe 11 in gas outlet, refrigerator cold-storage district and deoxygenation district, its nexine cooling tube is communicated with between deoxygenation district escape pipe 12 and refrigerator cold-storage district air inlet, also be provided with fin 14 on the pipeline that is connected between its nexine cooling tube and refrigerator air inlet, fin is further cooling with heat exchanger cooling pipe gas out, the deoxygenation district side of electrolyte panel is provided with conductive cathode, and opposite side is established conductive anode, also be provided with the heater into the heating of solid oxide electrolyte plate in deaerating plant 1, connection pipeline between described deaerating plant 1 and refrigerator cooling space 15 is provided with circulation air pump 13, and circulation air pump 13 is used for cooled low-oxygen gas is drawn into cold compartment of refrigerator.This electrolyte panel is heated to 400 degree only to be passed through for oxonium ion when above, oxygen molecule in the deoxygenation district obtains electronics and becomes oxonium ion on conductive cathode, oxonium ion loses electronics at conductive anode after passing again from electrolyte panel under electric field action, again become oxygen molecule, utilize air pump with this deoxidation and deliver in refrigerator through cooled low-oxygen gas again, make the gas in cooling space be in hypoxia, more fresh-keeping.yet, a plurality of refrigerating chambers of this fresh-keeping refrigerator are communicated with each other, its preservation method is by same air inlet and the ventilation of same gas outlet, when opening refrigerator doors, all refrigerating chambers are communicated with atmosphere, ambient atmos enters refrigerator, in refrigerator, oxygen content raises, needing after refrigerator doors is closed that oxygen is fallen in all refrigerating chambers processes, so relatively expend the energy, in addition, setting due to this connection of refrigerating chamber, its preservation method can not satisfy different foods to different controlled atmosphere parameters or temperature controlled requirement, simultaneously, the foul smell that food produces in refrigerator, moisture and organic gas are not removed in cyclic process, be circulated back to refrigerating chamber and can produce pollution to food.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method with fridge freshness retaining food that can independently control and replace the gas componant of each airtight material storage room (being mainly foul smell and other organic gas that nitrogen, oxygen, food distribute) under fresh-keeping environments.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of method with fridge freshness retaining food, this refrigerator comprise some for storing the material storage room that needs fresh-keeping foodstuff and the nitrogen oxygen segregation apparatus that is used for providing to this material storage room fresh-keeping gas; This mutual seal isolation of some material storage room and have respectively can airtight material storage room material storage room's door, each material storage room has respectively gas outlet and air inlet; The air inlet of this nitrogen oxygen segregation apparatus is communicated with the gas outlet of material storage room, and its fresh-keeping gas vent is communicated with the air inlet of material storage room by vavuum pump, and its oxygen rich gas outlet is in communication with the outside; Described method comprises:
A. open material storage room's door, placing to material storage room needs fresh-keeping foodstuff;
B. close material storage room's door, make material storage room airtight;
C. start vavuum pump, air separates through nitrogen oxygen segregation apparatus, and isolated oxygen rich gas is discharged from the oxygen rich gas outlet, and the fresh-keeping gas of isolated rich nitrogen enters material storage room via the air inlet of vavuum pump, material storage room;
D. the oxygen rich gas in material storage room is discharged via the gas outlet of material storage room, enters the entrance of nitrogen oxygen segregation apparatus, is separated by nitrogen oxygen segregation apparatus under the vavuum pump effect;
E. be cycled to repeat step C, D, make to be full of the fresh-keeping gas of rich nitrogen in material storage room.
As a further improvement on the present invention, be communicated with foul smell and organic gas release unit between the gas outlet of described material storage room and the air inlet of nitrogen oxygen segregation apparatus, in step D, the oxygen rich gas that material storage room discharges then enters nitrogen oxygen segregation apparatus under the vavuum pump effect after this foul smell and the dehumidifying of organic gas release unit, breaking away from foul smell and organic gas.
As a further improvement on the present invention, be communicated with the gas delivery device between the gas outlet of described material storage room and nitrogen oxygen segregation apparatus, in step C, this gas delivery device selectively is communicated with wherein one or more material storage room.
As a further improvement on the present invention, described refrigerator also comprises controller; Be provided with oxygen concentration sensor in described material storage room, in step C, this controller is according to the work of the signal controlling vavuum pump of oxygen concentration sensor.
As a further improvement on the present invention, described refrigerator also comprises controller; Be provided with oxygen concentration sensor in described material storage room, this controller is according to the work of the signal controlling gas delivery device of oxygen concentration sensor.
As a further improvement on the present invention, the gas vent of described vavuum pump is connected with manual fresh-keeping gas inflated arm, on this inflation arm, valve is installed, and in step C, opens valve, can treat the manual fresh-keeping gas of filling in fresh-keeping foodstuff to other.
As a further improvement on the present invention, described nitrogen oxygen segregation apparatus air inlet is provided with the replenish air branch road, and this additional branch road is provided with the case outer air and replenishes check valve, in step C, open the case outer air and replenish check valve, replenish the case outer air through compression pump to nitrogen oxygen segregation apparatus.
As a further improvement on the present invention, described oxygen rich gas outlet is provided with the oxygen enrichment air bleeding valve, in step C, opens the oxygen enrichment air bleeding valve and can discharge oxygen rich gas.
As a further improvement on the present invention, described air inlet is positioned at the bottom of described material storage room, and described gas outlet is positioned at the upper end of described material storage room.
the present invention compared with prior art, due to the mutual seal isolation of several material storage room of fresh-keeping refrigerator of the present invention and have respectively can airtight material storage room material storage room's door, each material storage room has respectively gas outlet and air inlet, the air inlet of material storage room is communicated with respectively the fresh-keeping gas vent of nitrogen oxygen segregation apparatus by vavuum pump, the gas outlet of material storage room is communicated with respectively the air inlet of nitrogen oxygen segregation apparatus, after adopting such structure, after storing food to storeroom, start vavuum pump, air separates through nitrogen oxygen segregation apparatus, the fresh-keeping gas of isolated rich nitrogen enters material storage room via vavuum pump, oxygen rich gas in material storage room is discharged via the gas outlet of material storage room, and circulation enters nitrogen oxygen segregation apparatus, and repeatedly circulation finally makes and is full of the fresh-keeping gas of rich nitrogen in material storage room.Adopt the said method fresh-keeping foodstuff, can satisfy different fresh-keeping food has the requirement of different fresh keeping gas parameters, to reach the effect that different food is obtained best preservation quality, and can independently control and substitution gas each airtight material storage room, has the prolongation fresh keeping time, improve preservation quality, reduce energy resource consumption, reduce the advantages such as cross pollution of food.
Description of drawings
Fig. 1 is the systematic schematic diagram of prior art fresh-keeping refrigerator.
Fig. 2 is the fresh-keeping refrigerator systematic schematic diagram of the embodiment of the present invention one.
Fig. 3 is the fresh-keeping refrigerator systematic schematic diagram of the embodiment of the present invention two.
The fresh-keeping refrigerator systematic schematic diagram of Fig. 4 embodiment of the present invention three.
The specific embodiment
Illustrate the specific embodiment of the present invention below in conjunction with accompanying drawing:
Embodiment one: as shown in Figure 2, a kind of fresh-keeping refrigerator 1 of the present invention, comprise refrigeration system 5, controller 6, control panel 7 and temperature sensor 17, can pass through the preservation temperature that control panel 7 is set in material storage room, when the temperature sensor 17 in material storage room temperature in material storage room detected higher than design temperature the time, controller 6 starts 5 pairs of refrigerators of refrigeration systems and freezes, until till reaching design temperature, because this content belongs to prior art, the present invention does not specifically launch narration at this.
Fresh-keeping refrigerator 1 also comprises several material storage room, each material storage room has respectively an air inlet and a gas outlet, the gas outlet is in the upper end of material storage room, air inlet is in the bottom of material storage room, this is because nitrogen is lighter than oxygen, when the fresh-keeping gas that is filled with is that after nitrogen-rich gas enters material storage room by air inlet, nitrogen can upwards waft, and the air of top is constantly taken away, and then reaches fast the purpose of gas displacement.Two material storage room 41 and 42 have been drawn as shown in Figure 2, material storage room 41 has gas outlet a1 and air inlet b 1, material storage room 42 has gas outlet a2 and air inlet b2, gas outlet a1, a2 are in the upper end of material storage room, air inlet b 1, b2 are in the bottom of material storage room, two material storage room 41 and 42 mutual seal isolation and have respectively can airtight material storage room material storage room's door 31 and 32, in order to guarantee sealing, be fitted with sealing strip 2 on airtight material storage room door 31,32, when airtight material storage room door 31,32 is closed and airtight material storage room 41,42 doorframe form and be sealed and matched.
Fresh-keeping refrigerator 1 also comprises the nitrogen oxygen segregation apparatus 13 that is arranged on outside material storage room, nitrogen oxygen segregation apparatus 13 is used for gas is carried out nitrogen oxygen separating treatment, the air inlet k of nitrogen oxygen segregation apparatus 13 is communicated with respectively material storage room 41,42 gas outlet a1, a2, its fresh-keeping gas vent h is communicated with respectively material storage room 41,42 air inlet b 1, b2 through vavuum pump 20, and its oxygen enrichment gas outlet g can be in communication with the outside.The diffusion barrier of nitrogen oxygen segregation apparatus 13 can be board-like film or hollow-fibre membrane.
Be communicated with gas delivery device 8 between nitrogen oxygen segregation apparatus 13 and material storage room 41,42, this gas delivery device 8 has two groups of linkage valve c1/d1-e1/f1 and c2/d2-e2/f2, can optionally be communicated with respectively or simultaneously as required material storage room 41, material storage room 42. Material storage room 41,42 gas outlet a1, a2 are communicated with respectively foul smell and organic gas import c 1, the c 2 of gas delivery device 8, the foul smell of gas delivery device 8 and organic gas outlet e 1, e2 are communicated with respectively the air inlet k of nitrogen oxygen segregation apparatus 13, material storage room 41,42 air inlet b 1, b2 are communicated with respectively fresh-keeping gas vent d1, the d2 of gas delivery device 8, and fresh-keeping gas feed f1, the f2 of gas delivery device 8 is communicated with respectively the fresh-keeping gas vent h of nitrogen oxygen segregation apparatus 13 through vavuum pump 20.
in the time need to replacing the gas in material storage room 41, vavuum pump 20 starts, one group of linkage valve of corresponding gas delivery device 8---be gas inlet and outlet c 1, e 1 and f1, d1 will be communicated with simultaneously, gas in material storage room 41 enters nitrogen oxygen segregation apparatus 13 from c1-e 1 valve of gas outlet a1 process gas delivery device 8 under the effect of vavuum pump 20, 13 pairs of gases of nitrogen oxygen segregation apparatus carry out nitrogen oxygen to be separated, oxygen rich gas is discharged in outside air by oxygen enrichment gas outlet g, the fresh-keeping gas of rich nitrogen passes through fresh-keeping gas outlet h through vavuum pump 20, the f1-d1 valve of gas delivery device 8 is admitted in the air inlet b1 of material storage room 41, realization is filled fresh-keeping gas to material storage room 41, repeatedly after the circulation, realized the displacement to material storage room's 41 interior gases, material storage room 41 is in rich nitrogen atmosphere, food in it is carried out effectively fresh-keeping, when needs stopped the gas displacement in material storage room 41, vavuum pump 20 quit work, one group of linkage valve of gas delivery device 8---and be that gas inlet and outlet c 1, e 1 and f1, d1 will disconnect path simultaneously, in like manner, in the time need to replacing the gas in material storage room 42, one group of gas turnover of corresponding gas delivery device 8
Further, can be connected with manual fresh-keeping gas inflated arm 14 on the gas vent j of vavuum pump 20, on this inflation arm 14, valve 15 is installed, can open valve 15 when needed, fresh-keeping gas externally is provided, such as fresh-keeping gas is filled with in other containers or packing material, the edible product such as other edible product such as rice class, wheat class, beans, fresh and dried goods class, greengrocery, meat, fruits, tealeaves class are carried out the normal temperature controlled atmosphere; The air inlet of nitrogen oxygen segregation apparatus 13 is provided with the replenish air branch road, should replenish branch road and be provided with the additional check valve 11 of case outer air, opening check valve 11 can carry out replenish air to nitrogen oxygen segregation apparatus 13, makes nitrogen oxygen segregation apparatus 13 can isolate enough nitrogen-rich gas and is filled with material storage room 41,42; The oxygen rich gas of nitrogen oxygen segregation apparatus 13 outlet g is provided with oxygen enrichment air bleeding valve 12, by oxygen enrichment air bleeding valve 12, can externally provide oxygen, and this oxygen can be used as him, as for indoor oxygen-enhanced or be connected to the kitchen to be used for gas-cooker combustion-supporting.
Embodiment two: owing to containing foul smell, organic gas and moisture in the gas in material storage room 41 and 42, remove these gases and be conducive to gas cleaning in the fresh-keeping and material storage room of food, so on the basis of embodiment one, as shown in Figure 3, be communicated with foul smell and organic gas release unit 9 between gas delivery device 8 and nitrogen oxygen segregation apparatus 13, the foul smell of gas delivery device 8 and organic gas outlet e 1, e 2 are communicated with the air inlet of foul smell and organic gas release unit 9, and the gas outlet of foul smell and organic gas release unit 9 is communicated with the air inlet k of nitrogen oxygen segregation apparatus 13.After carrying out the removal of foul smell, organic gas and moisture from material storage room 41 or 42, gas delivery device 8 gas out through foul smell and organic gas release unit 9, send into nitrogen oxygen segregation apparatus 13.This foul smell and organic gas release unit 9 can be and separate membrane type gas separator or absorption type filtration deodorization device.
Embodiment three: on the basis of embodiment two, as shown in Figure 4, gas delivery device 8, foul smell and organic gas release unit 9, vavuum pump 20, nitrogen oxygen segregation apparatus 13, the additional check valve 11 of case outer air and oxygen enrichment air bleeding valve 12 have consisted of the whole Air-conditioning system 16 of fresh-keeping refrigerator 1.
Fresh-keeping refrigerator 1 also comprises total refrigerator doors 19 and controller 6, controller 6 has input port part A, processing unit and delivery outlet part B, this controller adopts conventional signal controller, the input port of input port part A connects control panel 7, another four input ports connect respectively temperature sensor 17 and the oxygen concentration sensor 18 that is installed in airtight material storage room 41,42, the delivery outlet of delivery outlet part B connects vavuum pump 20, and another three delivery outlets are connected with fresh-keeping gas delivery device 8, oxygen enrichment air bleeding valve 12 and refrigeration system 5 respectively.Control panel 7 and controller 6 are interior can set and solidify required fresh-keeping gas component parameter and preservation temperature, and be arranged on airtight material storage room 41,42 in temperature sensor 17 and the current actual measurement parameter that provides of oxygen concentration sensor 18 and the temperature basis of comparing on, refrigeration system and Air-conditioning system are controlled in real time, be respectively a plurality of airtight material storage room the fresh-keeping gas component of Extraordinary and temperature are provided, thereby prevent the food cross pollution, extend fresh keeping time, improve preservation quality, energy savings consumption.Controller 6, control panel 7, temperature sensor 17 and oxygen concentration sensor 18 have consisted of the whole control system 21 of fresh-keeping refrigerator 1.
when the measured value of the oxygen concentration sensor 18 in material storage room 41 surpasses setting value, controller 6 starts the work of vavuum pump 20 and gas dispensing device 8, be that vavuum pump 20 is with the gas suction nitrogen oxygen segregation apparatus 13 of airtight material storage room 41, controller 6 is controlled the respective channel c 1 of gas delivery device 8 and material storage room 41, e 1 and f1, d1 is communicated with, flow through the c 1 of fresh-keeping gas delivery device 8, e 1 passage, remove foul smell through foul smell and organic gas release unit 9, organic gas and moisture, replenish check valve 11 by the case outer air again and replenish the part fresh air, be processed into the fresh-keeping gas of rich nitrogen by nitrogen oxygen segregation apparatus 13, respective channel f1 through fresh-keeping gas delivery device 8, d1, be transmitted back to again in the air inlet b 1 of corresponding sealing material storage room 41, so through some circulations, until till reaching the fresh-keeping gas composition parameter index that controlled atmosphere sets, in like manner, also with above-mentioned operation principle, just these Time Controller 6 control gas delivery devices 8 are communicated with respective channel c2, e2 and f2, the d2 of material storage room 42 in the time need to replacing the air in material storage room 42.Like this, can reach respectively provides the purpose of the fresh-keeping gas component of Extraordinary to a plurality of airtight material storage room, thereby prevents the food cross pollution, extends fresh keeping time, improves preservation quality, energy savings consumption.
Equally, when the measured value of the temperature sensor 17 in airtight material storage room 41 surpassed setting value, controller 6 started the work of refrigerator refrigeration systems 5, and the processing of lowering the temperature of 5 pairs of refrigerators of refrigeration system is until till reaching the temperature parameter index of setting; In like manner, in the time need to lowering the temperature to the temperature in material storage room 42 also with above-mentioned operation principle.
When fresh-keeping gas component parameter or preservation temperature depart from settings again, controller 6 will send instruction again, repeat above-mentioned circulation, until till again reaching the parameter index or temperature that controlled atmosphere sets.
Certainly, the airtight material storage room of above-mentioned all embodiment is not limited to two, can be arranged to as required a plurality ofly, but its principle is identical with the present invention.To sum up, the present invention can realize providing the purpose of the fresh-keeping gas component of Extraordinary to a plurality of airtight material storage room respectively, thereby prevents the food cross pollution, extends fresh keeping time, improves preservation quality, energy savings consumption.
Claims (9)
1. method with fridge freshness retaining food, this refrigerator comprise somely to be needed the material storage room (41,42) of fresh-keeping foodstuff and is used for providing to this material storage room (41,42) nitrogen oxygen segregation apparatus (13) of fresh-keeping gas for storage; These some material storage room (41,42) mutually seal isolation and have respectively can airtight material storage room (41,42) material storage room's door (31,32), each material storage room (41,42) has respectively gas outlet (a1, a2) and air inlet (b1, b2); The air inlet of this nitrogen oxygen segregation apparatus (13) is communicated with the gas outlet (a1, a2) of material storage room (41,42), its fresh-keeping gas vent (h) is communicated with the air inlet (b1, b2) of material storage room (41,42) by vavuum pump (20), its oxygen rich gas outlet (g) is in communication with the outside; Described method comprises:
A. open material storage room's door (31,32), placing to material storage room (41,42) needs fresh-keeping foodstuff;
B. close material storage room's door (31,32), make material storage room (41,42) airtight;
C. start vavuum pump (20), air separates through nitrogen oxygen segregation apparatus (13), isolated oxygen rich gas is discharged from oxygen rich gas outlet (g), and the fresh-keeping gas of isolated rich nitrogen enters material storage room (4) via the air inlet (b1, b2) of vavuum pump (20), material storage room (41,42);
D. the oxygen rich gas in material storage room (41,42) is discharged via the gas outlet (a1, a2) of material storage room (41,42), enters the entrance (k) of nitrogen oxygen segregation apparatus (13), is separated by nitrogen oxygen segregation apparatus (13) under vavuum pump (20) effect;
E. be cycled to repeat step C, D, make in material storage room (41,42) to be full of the fresh-keeping gas of rich nitrogen.
2. the method with fridge freshness retaining food according to claim 1, it is characterized in that: be communicated with foul smell and organic gas release unit (9) between the gas outlet (a1, a2) of described material storage room (41,42) and the air inlet of nitrogen oxygen segregation apparatus (13), in step D, the oxygen rich gas that material storage room (41,42) discharges then enters nitrogen oxygen segregation apparatus (13) under vavuum pump (20) effect after this foul smell and organic gas release unit (9) dehumidifying, breaking away from foul smell and organic gas.
3. the method with fridge freshness retaining food according to claim 1, it is characterized in that: be communicated with gas delivery device (8) between the gas outlet (a1, a2) of described material storage room (41,42) and nitrogen oxygen segregation apparatus (13), in step C, this gas delivery device (8) selectively is communicated with wherein one or more material storage room (41,42).
4. the method with fridge freshness retaining food according to claim 1, it is characterized in that: described refrigerator also comprises controller (6); Described material storage room is provided with oxygen concentration sensor (18) in (41,42), and in step C, this controller (6) is according to the work of the signal controlling vavuum pump (20) of oxygen concentration sensor (18).
5. the method with fridge freshness retaining food according to claim 3, it is characterized in that: described refrigerator also comprises controller (6); Described material storage room is provided with oxygen concentration sensor (18) in (41,42), and this controller (6) is according to the work of the signal controlling gas delivery device (8) of oxygen concentration sensor (18).
6. the method with fridge freshness retaining food according to claim 1, it is characterized in that: the gas vent (j) of described vavuum pump (20) is connected with manual fresh-keeping gas inflated arm, valve (15) is installed on this inflation arm, in step C, open valve (15), can treat the manual fresh-keeping gas of filling in fresh-keeping foodstuff to other.
7. the method with fridge freshness retaining food according to claim 1, it is characterized in that: described nitrogen oxygen segregation apparatus (13) air inlet is provided with the replenish air branch road, should replenish branch road and be provided with the additional check valve (11) of case outer air, in step C, open the case outer air and replenish check valve (11), replenish the case outer air through compression pump (10) to nitrogen oxygen segregation apparatus (13).
8. a kind of method with fridge freshness retaining food according to claim 1, it is characterized in that: described oxygen rich gas outlet (g) is provided with oxygen enrichment air bleeding valve (12), in step C, opens oxygen enrichment air bleeding valve (12) and can discharge oxygen rich gas.
9. the described method with fridge freshness retaining food of any one according to claim 1 to 8, it is characterized in that: described air inlet (b1, b2) is positioned at the bottom of described material storage room (41,42), and described gas outlet (a1, a2) is positioned at the upper end of described material storage room (41,42).
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| CN2012104088794A CN103090621A (en) | 2012-10-24 | 2012-10-24 | Method for preserving foods through refrigerator |
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| CN2012104088794A CN103090621A (en) | 2012-10-24 | 2012-10-24 | Method for preserving foods through refrigerator |
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Cited By (6)
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| WO2018103724A1 (en) * | 2016-12-09 | 2018-06-14 | 青岛海尔股份有限公司 | Refrigerating and freezing device and air-regulating fresh-keeping control method therefor |
| CN109941614A (en) * | 2019-05-07 | 2019-06-28 | 广东顺德柏杉电器科技有限公司 | A kind of anaerobic preservation device |
| CN109998016A (en) * | 2019-04-18 | 2019-07-12 | 宁波奥克斯电气股份有限公司 | A kind of steam box preservation method, the fresh-keeping mechanism of steam box and fresh-keeping steam box |
| CN111846631A (en) * | 2020-07-23 | 2020-10-30 | 合肥即理科技有限公司 | Oxygen-separating preservation device and preservation method thereof |
| CN113446803A (en) * | 2020-03-24 | 2021-09-28 | 合肥华凌股份有限公司 | Controlled atmosphere preservation device, fruit and vegetable preservation method based on refrigerator, controller and refrigerator |
| CN114739082A (en) * | 2022-04-12 | 2022-07-12 | 安徽省万爱电器科技有限公司 | Healthy intelligent refrigerator with automatic ventilation function |
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| CN113446803A (en) * | 2020-03-24 | 2021-09-28 | 合肥华凌股份有限公司 | Controlled atmosphere preservation device, fruit and vegetable preservation method based on refrigerator, controller and refrigerator |
| CN113446803B (en) * | 2020-03-24 | 2022-09-20 | 合肥华凌股份有限公司 | Controlled atmosphere preservation device, fruit and vegetable preservation method based on refrigerator, controller and refrigerator |
| CN111846631A (en) * | 2020-07-23 | 2020-10-30 | 合肥即理科技有限公司 | Oxygen-separating preservation device and preservation method thereof |
| CN114739082A (en) * | 2022-04-12 | 2022-07-12 | 安徽省万爱电器科技有限公司 | Healthy intelligent refrigerator with automatic ventilation function |
| CN114739082B (en) * | 2022-04-12 | 2024-02-13 | 安徽省万爱电器科技有限公司 | Healthy intelligent refrigerator with automatic ventilation function |
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Application publication date: 20130508 |