WO2017206556A1 - 冰箱 - Google Patents

冰箱 Download PDF

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Publication number
WO2017206556A1
WO2017206556A1 PCT/CN2017/074603 CN2017074603W WO2017206556A1 WO 2017206556 A1 WO2017206556 A1 WO 2017206556A1 CN 2017074603 W CN2017074603 W CN 2017074603W WO 2017206556 A1 WO2017206556 A1 WO 2017206556A1
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WO
WIPO (PCT)
Prior art keywords
nitrogen
refrigerator
air
adsorption
air compressor
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.)
Ceased
Application number
PCT/CN2017/074603
Other languages
English (en)
French (fr)
Inventor
朱小兵
刘浩泉
姜波
王丽燕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Haier Co Ltd
Original Assignee
Qingdao Haier Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao Haier Co Ltd filed Critical Qingdao Haier Co Ltd
Priority to RU2018139799A priority Critical patent/RU2714760C1/ru
Priority to KR1020187029983A priority patent/KR102157947B1/ko
Priority to US16/099,685 priority patent/US10966442B2/en
Priority to JP2018557355A priority patent/JP6641030B2/ja
Priority to ES17805503T priority patent/ES2880150T3/es
Priority to AU2017274875A priority patent/AU2017274875B2/en
Priority to EP17805503.4A priority patent/EP3467409B1/en
Publication of WO2017206556A1 publication Critical patent/WO2017206556A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
    • A23B2/704—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23B2/708—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
    • A23B2/712—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O in which an absorbent is placed or used
    • A23B2/717—Oxygen absorbent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/047—Pressure swing adsorption
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/04—Purification or separation of nitrogen
    • C01B21/0405—Purification or separation processes
    • C01B21/0433—Physical processing only
    • C01B21/045—Physical processing only by adsorption in solids
    • C01B21/0455—Physical processing only by adsorption in solids characterised by the adsorbent
    • C01B21/0461—Carbon based materials
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
    • A23B2/704—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23B2/7045—Details of apparatus for generating or regenerating gases
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
    • A23B2/704—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23B2/708—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/70—Preservation of foods or foodstuffs, in general by treatment with chemicals
    • A23B2/704—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23B2/708—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O
    • A23B2/712—Preservation of foods or foodstuffs, in general by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor in a controlled atmosphere, e.g. partial vacuum, comprising only CO2, N2, O2 or H2O in which an absorbent is placed or used
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23B—PRESERVATION OF FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES; CHEMICAL RIPENING OF FRUIT OR VEGETABLES
    • A23B2/00—Preservation of foods or foodstuffs, in general
    • A23B2/80—Freezing; Subsequent thawing; Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407—Constructional details of adsorbing systems
    • B01D53/0446—Means for feeding or distributing gases
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/04—Purification or separation of nitrogen
    • C01B21/0405—Purification or separation processes
    • C01B21/0433—Physical processing only
    • C01B21/045—Physical processing only by adsorption in solids
    • C01B21/0455—Physical processing only by adsorption in solids characterised by the adsorbent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B25/00—Machines, plants or systems, using a combination of modes of operation covered by two or more of the groups F25B1/00 - F25B23/00
    • F25B25/02—Compression-sorption machines, plants, or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23V—INDEXING SCHEME RELATING TO FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES AND LACTIC OR PROPIONIC ACID BACTERIA USED IN FOODSTUFFS OR FOOD PREPARATION
    • A23V2002/00—Food compositions, function of food ingredients or processes for food or foodstuffs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/102—Carbon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/116—Molecular sieves other than zeolites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2256/00—Main component in the product gas stream after treatment
    • B01D2256/10—Nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/10—Single element gases other than halogens
    • B01D2257/104—Oxygen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2258/00—Sources of waste gases
    • B01D2258/06—Polluted air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/047—Pressure swing adsorption
    • B01D53/053—Pressure swing adsorption with storage or buffer vessel
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/041—Treating air flowing to refrigeration compartments by purification
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/061—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation through special compartments

Definitions

  • the present invention relates to a refrigerating and freezing apparatus, and more particularly to a refrigerator.
  • preservation is to ensure the quality of food or other items as long as possible.
  • the reduction of the quality of fruits and vegetables is mainly related to the aerobic respiration of fruits and vegetables and the reproduction of microorganisms in food. Therefore, the preservation of fruits and vegetables requires reducing the aerobic respiration and microbial biological activity of fruits and vegetables.
  • the fresh-keeping methods commonly used in the storage devices of fresh-keeping refrigerators mainly include: low-temperature treatment, however, this method can not effectively inhibit the growth of aerobic respiration and microorganisms of fruits and vegetables, and too low temperature can cause nutrient loss of foods. . Therefore, the existing refrigerator has a short preservation time and cannot meet the needs of long-term storage of food, and its freshness preservation performance cannot satisfy the user's demand.
  • the present invention has been made in order to provide a refrigerator that overcomes the above problems or at least partially solves the above problems.
  • a further object of the invention is to improve the freshness retention properties of a refrigerator.
  • Another further object of the present invention is to make the refrigerator compact and save space.
  • a refrigerator comprising: a casing having an interior defining a storage compartment, a sealed storage space in the storage compartment; and an adsorption cylinder disposed in the storage compartment Internally, a carbon molecular sieve is disposed inside; an air compressor is directly connected to the adsorption cylinder through an air intake pipe, and is configured to controlly supply compressed air to the adsorption cylinder for carbon molecular sieve to prepare nitrogen by using compressed air; and a nitrogen storage tank Adjacent to the adsorption cartridge, the inlet end is connected to the adsorption cartridge to receive the nitrogen prepared by the carbon molecular sieve, and the outlet end communicates with the storage space to supply nitrogen to the storage space.
  • an air compressor is disposed inside the storage compartment adjacent to the adsorption cylinder, and the air compressor is configured to draw in air from the interior of the storage compartment and compress to provide compressed air to the adsorption cylinder.
  • the refrigerator further includes: a nitrogen box, disposed inside the storage compartment and abutting against an inner wall of the box, and defining a receiving cavity therein for accommodating the adsorption cylinder, the air compressor, and the nitrogen storage tank.
  • a nitrogen box disposed inside the storage compartment and abutting against an inner wall of the box, and defining a receiving cavity therein for accommodating the adsorption cylinder, the air compressor, and the nitrogen storage tank.
  • an air compressor is disposed within the press compartment of the refrigerator, the air compressor being configured to draw air from the interior of the press compartment and compress to provide compressed air to the cartridge.
  • the refrigerator is an air-cooled refrigerator; and at least a portion of the air intake duct extends along the air duct of the refrigerator and leads to the adsorption cylinder.
  • the refrigerator further includes: a partition disposed inside the box to partition the storage compartment; and the adsorption cylinder is disposed at a corner formed by the inner wall of the casing and the partition, and abuts against the inner wall of the casing and The separator.
  • the air compressor is configured to be intermittently activated to provide compressed air to the adsorption cartridge during the preparation of the nitrogen; and the adsorption cartridge is further configured to communicate the external environment of the adsorption cartridge during the pause of the air compressor such that The oxygen-enriched gas desorbed by the carbon molecular sieve is discharged to the external environment.
  • the refrigerator further includes: a three-way electromagnetic valve disposed on the air intake pipe and having three gas transmission ports, wherein the first gas transmission port is connected to the air compressor, and the second gas delivery port is connected to the adsorption tube.
  • the third gas delivery port is connected to the external environment, and the three-way solenoid valve is configured to communicate the first gas delivery port and the second gas delivery port to enable the air compressor to supply compressed air to the adsorption cartridge, and during the suspension of the air compressor
  • the first gas delivery port is closed, and the second gas delivery port and the third gas delivery port are connected to discharge the oxygen-rich gas desorbed by the adsorption cylinder from the third gas delivery port into the external environment.
  • the refrigerator further includes: a two-way electromagnetic valve disposed on the connecting pipeline of the adsorption cylinder and the nitrogen storage tank, configured to close the connection pipeline of the adsorption cylinder and the nitrogen storage tank during the suspension of the air compressor to prevent nitrogen reflux .
  • a two-way electromagnetic valve disposed on the connecting pipeline of the adsorption cylinder and the nitrogen storage tank, configured to close the connection pipeline of the adsorption cylinder and the nitrogen storage tank during the suspension of the air compressor to prevent nitrogen reflux .
  • the refrigerator further includes: a regulating valve disposed on the pipeline leading to the storage space of the nitrogen storage tank, and configured to adjust a gas output flow rate of the nitrogen storage tank.
  • a regulating valve disposed on the pipeline leading to the storage space of the nitrogen storage tank, and configured to adjust a gas output flow rate of the nitrogen storage tank.
  • the invention provides a refrigerator comprising: an adsorption cylinder, an air compressor, and a nitrogen storage tank.
  • the storage compartment of the refrigerator is provided with a sealed storage space.
  • the adsorption cylinder is disposed inside the storage compartment, and a carbon molecular sieve is disposed inside the adsorption chamber.
  • the air compressor is directly coupled to the adsorption cartridge through an air intake tube and is configured to controllably supply compressed air to the adsorption cartridge for the carbon molecular sieve to utilize the compressed air to produce nitrogen.
  • the nitrogen storage tank is disposed adjacent to the adsorption cylinder, and the inlet end is connected to the adsorption cylinder to receive nitrogen prepared by the carbon molecular sieve, and the outlet end communicates with the storage space to supply nitrogen to the storage space.
  • the refrigerator of the present invention is provided with a storage space for food preservation inside the storage compartment, the adsorption cylinder is used for preparing nitrogen gas, and the nitrogen storage tank supplies the prepared nitrogen gas to the storage space to reduce the oxygen content in the storage space. , thereby improving the freshness preservation performance of the refrigerator.
  • the adsorption cylinder and the nitrogen storage tank are placed inside the storage compartment by the miniaturization design of the nitrogen preparation system, thereby facilitating the supply of nitrogen to the storage space.
  • the nitrogen storage tank is disposed adjacent to the adsorption cylinder, so that the internal structure of the refrigerator is compact, and the space for using the refrigerator is saved.
  • the air compressor is disposed inside the storage compartment and adjacent to the adsorption cylinder, and the air compressor takes in air from the interior of the storage compartment and compresses it to be supplied to the adsorption cylinder.
  • the air compressor and the adsorption cylinder are both disposed inside the storage compartment, and the refrigerator has a compact structure and saves space for use.
  • the air compressor directly draws in air from the interior of the storage compartment and compresses it. The temperature of the sucked air is low, and the temperature of the generated nitrogen is also low. When the nitrogen enters the interior of the storage space, it does not cause the internal temperature of the storage space. Large fluctuations are conducive to food preservation.
  • FIG. 1 is a schematic view of a refrigerator in accordance with one embodiment of the present invention.
  • FIG. 2 is a schematic view of a compartment inside a storage compartment of a refrigerator according to an embodiment of the present invention
  • FIG. 3 is a schematic view of a compartment inside a storage compartment of a refrigerator according to another embodiment of the present invention.
  • FIG. 4 is a schematic view of a refrigerator in accordance with another embodiment of the present invention.
  • Figure 5 is a schematic illustration of a three-way solenoid valve of a refrigerator in accordance with another embodiment of the present invention.
  • FIG. 6 is a flow chart of a method of controlling a refrigerator in accordance with another embodiment of the present invention.
  • FIG. 1 is a schematic view of a refrigerator according to an embodiment of the present invention.
  • the refrigerator of this embodiment includes a tank 10, an adsorption cylinder 20, an air compressor 30, and a nitrogen storage tank 50.
  • the interior of the refrigerator cabinet 10 defines a storage compartment, and the storage compartment is provided with a sealed storage space 11 for storing foods that need to be kept for a long time, such as vegetables, fruits, and the like.
  • the adsorption cylinder 20 is disposed inside the storage compartment, and is internally provided with a carbon molecular sieve.
  • the air compressor 30 is directly connected to the adsorption cylinder 20 through the air intake pipe 40, and is controlled to supply compressed air to the adsorption cylinder 20 for the carbon molecular sieve to prepare nitrogen gas using compressed air.
  • the nitrogen storage tank 50 is disposed adjacent to the adsorption cylinder 20, The intake end is connected to the adsorption cartridge 20 to receive nitrogen gas prepared from the carbon molecular sieve, and the outlet end thereof communicates with the storage space 11 to supply nitrogen to the storage space 11.
  • the refrigerator of the present embodiment uses the PSA nitrogen production method to remove oxygen in the air to produce pure nitrogen gas, and then injects nitrogen into the interior of the storage space 11 for the purpose of preserving the food.
  • Pressure swing adsorption PSA Pressure Swing Adsorption
  • Pressure swing adsorption specifically refers to pressurizing the mixed gas under the condition of constant temperature, and adsorbing excess impurity gas by the adsorbent to obtain a relatively pure single gas, and then using reduced pressure (vacuum) or atmospheric pressure.
  • the method desorbs the impurity gas in the adsorbent to make secondary use of the adsorbent.
  • Carbon molecular sieve is a common adsorbent for achieving oxygen-nitrogen separation and extracting nitrogen from air.
  • the PSA nitrogen production method utilizes this principle to produce pure nitrogen by using air as a raw material and using pressure swing adsorption technology to selectively adsorb oxygen and nitrogen by carbon molecular sieves to separate nitrogen and oxygen in the air.
  • Conventional PSA nitrogen generators are mostly used for large-scale nitrogen production, and include air tanks and oil-water separation devices.
  • the air compressor 30 has a large working pressure, a large volume, and a complicated structure, and cannot meet the requirements for nitrogen production in a refrigerator.
  • the operating pressure of the air compressor 30 is only 1.5 to 2 atmospheres, which is much smaller than that of the large-scale nitrogen generator. Since the working pressure is small, the refrigerator of the present embodiment eliminates the air tank which functions as a buffer in the large-scale nitrogen-making apparatus, and simplifies the structure of the refrigerator. In addition, the refrigerator of the present embodiment also eliminates the oil-water separation device that purifies the air in the large-scale nitrogen-making device, and provides an air-drying agent at the front end of the carbon molecular sieve to replace the oil-water separation device to realize the function of purifying the air.
  • the adsorption cartridge 20 and the nitrogen storage tank 50 of the present embodiment are miniaturized as compared with the large-scale nitrogen generator, and it is preferable to use plastic as a material for production, which effectively reduces the volume of the adsorption cartridge 20 and the nitrogen storage tank 50.
  • the weight can thus be applied to the inside of the refrigerator.
  • the nitrogen preparation system is applied to the inside of the refrigerator by miniaturization of the nitrogen preparation system, and at least the adsorption cylinder 20 and the nitrogen storage tank 50 are placed inside the storage compartment to facilitate the storage space 11 Nitrogen is supplied.
  • the nitrogen storage tank 50 is disposed adjacent to the adsorption cylinder 20, which can make the internal structure of the refrigerator compact and save the space for use of the refrigerator.
  • FIG. 2 is a schematic view of a compartment inside a storage compartment of a refrigerator in accordance with one embodiment of the present invention.
  • the air compressor 30 is disposed inside the storage compartment and adjacent to the adsorption cylinder 20, and the air compressor 30 is configured to take in air from the interior of the storage compartment and compress it to supply compressed air to the adsorption cylinder 20.
  • the storage compartment is preferably a refrigerating compartment of the refrigerator
  • the storage space 11 is disposed in the refrigerating compartment
  • the adsorption cylinder 20, the air compressor 30, and the nitrogen storage tank 50 are all disposed in the refrigerating compartment, and preferably It is disposed at the rear of the storage space 11 to make the overall structure of the refrigerator compact, saves space for use of the refrigerator, and facilitates transportation of nitrogen gas to the storage space 11.
  • the air compressor 30 takes in air from the inside of the storage compartment and compresses it. The temperature of the sucked air is low, and the temperature of the generated nitrogen gas is also low. Therefore, when the nitrogen gas is introduced into the interior of the storage space 11, the inside of the storage space 11 is not caused. Large fluctuations in temperature are conducive to food preservation.
  • the refrigerator further includes a nitrogen-producing casing 80 (the front panel of which is shielded from internal components, not shown).
  • the nitrogen-reducing casing 80 is disposed inside the storage compartment and abuts against the inner wall of the casing 10, and defines a receiving chamber therein for accommodating the adsorption cylinder 20, the air compressor 30, and the nitrogen storage tank 50.
  • the refrigerator of the present embodiment integrates the adsorption cylinder 20, the air compressor 30, the nitrogen storage tank 50, and related piping into the interior of the nitrogen-reducing casing 80, so that the above-mentioned plurality of devices can be integrally mounted and disassembled for inspection and maintenance.
  • the refrigerator can be an air-cooled refrigerator.
  • the air compressor 30 is disposed inside the press sump 90 of the refrigerator, and the air compressor 30 is configured to take in air from the inside of the press sump 90 and compress it to supply compressed air to the sorbent cylinder 20.
  • At least a portion of the air intake duct 40 extends along the air duct of the refrigerator and leads to the adsorption cylinder 20.
  • the air is compressed by the press chamber 90 into the air compressor 30, and the temperature is relatively high. If the nitrogen is directly produced by the high temperature air, a relatively high temperature nitrogen gas is generated, and the high temperature nitrogen gas is input into the storage space 11 to cause a large temperature.
  • the air intake pipe 40 is preferably connected to the adsorption cylinder 20 in the storage room through the air duct of the refrigerator.
  • the high temperature air is cooled by the cold air in the air passage, and then enters the adsorption cylinder 20,
  • the resulting nitrogen gas temperature is relatively low, and the input storage space 11 does not cause large temperature fluctuations, which is conducive to the preservation of food.
  • the refrigerator of this embodiment further includes a partition 12 disposed inside the casing 10 and partitioning the storage compartment such that the storage compartment is divided into a plurality of storage areas.
  • the storage space 11 is disposed in one of the storage areas, and the adsorption cylinder 20 and the nitrogen storage tank 50 are both disposed in the same storage area containing the storage space 11 in order to supply nitrogen to the storage space 11.
  • the storage space 11, the adsorption cylinder 20, and the nitrogen storage tank 50 are preferably disposed in a storage area at a lower portion of the storage compartment.
  • the adsorption cylinder 20 can be disposed at a corner formed by the inner wall of the casing 10 and the partition 12, and abuts against the inner wall of the casing 10 and the partition 12 to save space in the storage compartment.
  • the adsorption cartridge 20 may also be disposed at a corner formed between the casings 10 and abut against the inner wall of the casing 10.
  • the air compressor 30 of the present embodiment is configured to be intermittently activated to supply compressed air to the adsorption cartridge 20 during the preparation of nitrogen gas; and the adsorption cartridge 20 is further configured to be temporarily suspended in the air compressor 30.
  • the external environment of the adsorption cartridge 20 is communicated to discharge the oxygen-rich gas desorbed by the carbon molecular sieve to the external environment.
  • the principle of nitrogen production of the refrigerator of this embodiment is specifically that the air compressor 30 intermittently starts to supply compressed air to the adsorption cylinder 20.
  • the air compressor 30 is opened, the air pressure inside the adsorption cylinder 20 rises, and the carbon molecular sieve is in the air.
  • the oxygen is adsorbed, and the remaining nitrogen is supplied to the nitrogen storage tank 50, and the nitrogen storage tank 50 charges the nitrogen into the storage space 11; when the air compressor 30 is suspended, the compressed air is no longer supplied to the adsorption cylinder 20.
  • the adsorption cylinder 20 is connected to the external environment, the internal air pressure is lowered, the carbon molecular sieve begins to desorb, and the desorbed oxygen-enriched gas is discharged from the opening communicating with the outside.
  • the refrigerator of this embodiment further includes a three-way solenoid valve 60.
  • Figure 5 is a schematic illustration of a three-way solenoid valve 60 of a refrigerator in accordance with another embodiment of the present invention.
  • the three-way solenoid valve 60 is disposed on the air intake pipe 40 and has three gas transmission ports.
  • the first gas delivery port 61 communicates with the air compressor 30, and the second gas delivery port 62 communicates with the adsorption cylinder 20, and the third transmission port thereof
  • the gas port 63 communicates with the external environment, and the three-way solenoid valve 60 is configured to communicate the first gas delivery port 61 and the second gas delivery port 62 such that the air compressor 30 supplies compressed air to the adsorption cartridge 20, and at the air compressor 30.
  • the first gas delivery port 61 is closed, and the second gas delivery port 62 and the third gas delivery port 63 are connected to discharge the oxygen-enriched gas desorbed by the adsorption cartridge 20 from the third gas delivery port 63 into the external environment.
  • the third gas delivery port 63 may be connected to the outside of the refrigerator to discharge the oxygen-rich gas from the inside of the refrigerator, or may be connected to other storage spaces in the refrigerator that require oxygen-rich gas to utilize the exhaust gas.
  • the refrigerator of this embodiment further includes a two-way solenoid valve 70 disposed on the connecting line of the adsorption cylinder 20 and the nitrogen storage tank 50, and configured to close the adsorption cylinder 20 and the nitrogen storage during the suspension of the air compressor 30.
  • the connecting line of the tank 50 prevents nitrogen from flowing back.
  • the refrigerator of this embodiment further includes a flow regulating valve disposed on the line of the nitrogen storage tank 50 leading to the storage space 11 and configured to adjust the gas output flow rate of the nitrogen storage tank 50.
  • FIG. 6 is a flow chart of a method of controlling a refrigerator in accordance with another embodiment of the present invention.
  • the control method performs the following steps in sequence:
  • step S602 the air compressor 30 is turned on to cause the air compressor 30 to compress the sucked air.
  • step S604 the first gas delivery port 61 and the second gas delivery port 62 are connected to open the two-way electromagnetic valve 70 to allow the air compressor 30 to supply compressed air to the adsorption cylinder 20, thereby causing the air pressure in the adsorption cylinder 20 to rise.
  • Step S606 adsorbing oxygen in the compressed air in the adsorption cylinder 20, and residual nitrogen It is sent to the nitrogen storage tank 50.
  • the carbon molecular sieve in the adsorption cartridge 20 adsorbs oxygen in the air to produce relatively pure nitrogen, which is delivered to the nitrogen storage tank 50 via the gas delivery pipe.
  • the adsorption process can last for 30 s to 2 min, preferably 50 s.
  • step S608 the air compressor 30 is turned off.
  • step S610 the second air inlet 62 and the third air inlet 63 are connected, and the two-way electromagnetic valve 70 is closed to stop the air compressor 30 from supplying compressed air to the adsorption cylinder 20, thereby causing the air pressure in the adsorption cylinder 20 to decrease.
  • step S612 the oxygen adsorbed by the carbon molecular sieve in the adsorption cylinder 20 is desorbed, and the oxygen is discharged from the adsorption cylinder 20 from the third gas delivery port 63.
  • the adsorption cylinder 20 starts desorbing, and the carbon molecular sieve in the adsorption cylinder 20 desorbs the adsorbed oxygen, and then discharges the adsorption cylinder 20 from the third gas delivery port 63.
  • the desorption process can last for 30 s to 2 min, preferably 50 s.
  • the subsequent process repeats the above cycle, and the air compressor 30 intermittently supplies compressed air to the adsorption cylinder 20, and the adsorption cylinder 20 alternately performs adsorption and desorption, and intermittently generates nitrogen gas to be supplied to the nitrogen storage tank 50.
  • the embodiment provides a refrigerator including: an adsorption cylinder 20, an air compressor 30, and a nitrogen storage tank 50.
  • a sealed storage space 11 is provided in the storage compartment of the refrigerator.
  • the adsorption cylinder 20 is disposed inside the storage compartment, and is internally provided with a carbon molecular sieve.
  • the air compressor 30 is directly coupled to the adsorption cartridge 20 via an air intake tube 40 and is configured to controllably supply compressed air to the adsorption cartridge 20 for the carbon molecular sieve to utilize the compressed air to produce nitrogen.
  • the nitrogen storage tank 50 is disposed adjacent to the adsorption cylinder 20, and its inlet end is connected to the adsorption cylinder 20 to receive nitrogen gas prepared by the carbon molecular sieve, and the outlet end thereof communicates with the storage space 11 to supply nitrogen gas to the storage space 11.
  • a storage space 11 for food preservation is disposed inside the storage compartment, and the adsorption cylinder 20 is used for preparing nitrogen gas, and the nitrogen storage tank 50 supplies the prepared nitrogen gas to the storage space 11 to reduce the storage.
  • the oxygen content in the space 11 thereby improving the freshness preservation performance of the refrigerator.
  • the adsorption cylinder 20 and the nitrogen storage tank 50 are placed inside the storage compartment by the miniaturization design of the nitrogen preparation system, thereby facilitating supply of nitrogen to the storage space 11.
  • the nitrogen storage tank 50 is disposed adjacent to the adsorption cylinder 20, so that the internal structure of the refrigerator is compact, and the space for use of the refrigerator is saved.
  • the air compressor 30 is disposed inside the storage compartment and adjacent to the adsorption cylinder 20, and the air compressor 30 takes in air from the interior of the storage compartment and compresses it to the adsorption cylinder 20 Provides compressed air.
  • the air compressor 30 and the adsorption cylinder 20 They are all installed inside the storage room, which is compact and saves space in the refrigerator.

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Abstract

一种冰箱，包括吸附筒（20）、空气压缩机（30）和氮气储藏罐（50）。冰箱的储物间室内设置有密封的储物空间（11）。吸附筒（20）设置于储物间室内部，其内部设置有碳分子筛。空气压缩机（30）通过空气进气管（40）直接与吸附筒（20）连接，配置成受控地向吸附筒（20）提供压缩空气，以供碳分子筛利用压缩空气制备氮气。氮气储藏罐（50）进气端连接吸附筒（20），出气端连通储物空间（11）。该冰箱降低了储物空间（11）内的氧气含量，提高了冰箱的保鲜性能。

Description

冰箱 技术领域
本发明涉及冷藏冷冻设备，特别涉及一种冰箱。
背景技术
目前，保鲜是为了使食品或者其他物品尽可能长的保证其品质。一般而言，果蔬食品品质的降低主要与果蔬自身的有氧呼吸和微生物在食品中繁殖的有关，因此果蔬保鲜就需要降低果蔬自身的有氧呼吸和微生物的生物活性。
保鲜冰箱(冰柜)的储物装置常用的保鲜手段主要包括：低温处理，然而这种手段并不能有效抑制果蔬自身的有氧呼吸和微生物的生长，而且过低的温度还会导致食品的营养损失。因此现有冰箱的保鲜时间较短，不能满足长期储藏食物的需要，其保鲜性能不能满足用户需求。
发明内容
鉴于上述问题，提出了本发明以便提供一种克服上述问题或者至少部分地解决上述问题的冰箱。
本发明一个进一步的目的是提高冰箱的保鲜性能。
本发明的另一个进一步目的是要使冰箱结构紧凑、节省使用空间。
根据本发明的一个方面，本发明提供了一种冰箱，包括：箱体，其内部限定有储物间室，储物间室内设置有密封的储物空间；吸附筒，设置于储物间室内部，其内部设置有碳分子筛；空气压缩机，通过空气进气管直接与吸附筒连接，且配置成受控地向吸附筒提供压缩空气，以供碳分子筛利用压缩空气制备氮气；以及氮气储藏罐，相邻吸附筒设置，其进气端连接吸附筒以接收由碳分子筛制备的氮气，其出气端连通储物空间以向储物空间提供氮气。
可选地，空气压缩机设置于储物间室内部，并与吸附筒相邻，空气压缩机配置成从储物间室内部吸入空气并进行压缩，以向吸附筒提供压缩空气。
可选地，上述冰箱还包括：制氮盒体，设置于储物间室内部并贴靠箱体的内壁，且其内限定有容纳腔，以用于容纳吸附筒、空气压缩机和氮气储藏 罐。
可选地，空气压缩机设置于冰箱的压机仓内部，空气压缩机配置成从压机仓内部吸入空气并进行压缩，以向吸附筒提供压缩空气。
可选地，冰箱为风冷冰箱；且空气进气管的至少部分区段沿冰箱的风道延伸并通向吸附筒。
可选地，上述冰箱还包括：隔板，设置于箱体内部以分隔储物间室；并且吸附筒设置于箱体内壁与隔板形成的拐角处，并贴靠于所述箱体内壁和所述隔板。
可选地，空气压缩机配置成在制备氮气的过程中，间隔地启动以向吸附筒提供压缩空气；并且吸附筒还配置成，在空气压缩机暂停的期间连通吸附筒的外部环境，以使碳分子筛解吸出的富氧气体排出至外部环境。
可选地，上述冰箱还包括：三通电磁阀，设置于空气进气管上，并具有三个输气口，其第一输气口连通空气压缩机，其第二输气口连通吸附筒，其第三输气口连通外部环境，并且三通电磁阀配置成，连通第一输气口和第二输气口以使得空气压缩机向吸附筒提供压缩空气，并在空气压缩机暂停的期间，封闭第一输气口，并连通第二输气口和第三输气口，以将吸附筒解吸出的富氧气体由第三输气口排入外部环境。
可选地，上述冰箱还包括：两通电磁阀，设置于吸附筒与氮气储藏罐的连接管路上，配置成在空气压缩机暂停期间关闭吸附筒与氮气储藏罐的连接管路以防止氮气回流。
可选地，上述冰箱还包括：调流阀，设置于氮气储藏罐通向储物空间的管路上，且配置成调节氮气储藏罐的气体输出流量。
本发明提供了一种冰箱，包括：吸附筒、空气压缩机以及氮气储藏罐。冰箱的储物间室内设置有密封的储物空间。吸附筒设置于储物间室内部，其内部设置有碳分子筛。空气压缩机通过空气进气管直接与吸附筒连接，且配置成受控地向吸附筒提供压缩空气，以供碳分子筛利用压缩空气制备氮气。氮气储藏罐相邻吸附筒设置，其进气端连接吸附筒以接收由碳分子筛制备的氮气，其出气端连通储物空间以向该储物空间提供氮气。本发明的冰箱，其储物间室内部设置有用于食物保鲜的储物空间，吸附筒用于制备氮气，氮气储藏罐将制备出的氮气向储物空间提供，降低储物空间内的氧气含量，从而提高冰箱的保鲜性能。
本发明的冰箱，通过对氮气制备系统的小型化设计，至少将吸附筒和氮气储藏罐放置于储物间室内部，便于向储物空间提供氮气。另外，氮气储藏罐相邻吸附筒设置，使得冰箱内部结构紧凑、节省冰箱使用空间。
进一步地，本发明的冰箱，空气压缩机设置于储物间室内部，并与吸附筒相邻，空气压缩机从储物间室内部吸入空气并进行压缩，以向吸附筒提供。本发明的冰箱中，空气压缩机和吸附筒均设置于储物间室内部，冰箱结构紧凑、节省使用空间。另外，空气压缩机直接从储物间室内部吸入空气并进行压缩，吸入的空气温度较低，产生的氮气温度同样较低，在氮气输入储物空间内部时，不会引起储物空间内部温度大幅度波动，有利于食品保鲜。
根据下文结合附图对本发明具体实施例的详细描述，本领域技术人员将会更加明了本发明的上述以及其他目的、优点和特征。
附图说明
后文将参照附图以示例性而非限制性的方式详细描述本发明的一些具体实施例。附图中相同的附图标记标示了相同或类似的部件或部分。本领域技术人员应该理解，这些附图未必是按比例绘制的。附图中：
图1是根据本发明一个实施例的冰箱的示意图；
图2是根据本发明一个实施例的冰箱的储物间室内部的示意图；
图3是根据本发明另一个实施例的冰箱的储物间室内部的示意图；
图4是根据本发明另一个实施例的冰箱的示意图；
图5是根据本发明另一个实施例的冰箱的三通电磁阀的示意图；以及
图6是根据本发明另一个实施例的冰箱的控制方法的流程图。
具体实施方式
本实施例首先提供了一种冰箱，图1是根据本发明一个实施例的冰箱的示意图。本实施例的冰箱包括：箱体10、吸附筒20、空气压缩机30以及氮气储藏罐50。
冰箱箱体10内部限定有储物间室，储物间室内设置有密封的储物空间11，该储物空间11用于储存需要长时间保鲜的食品，如蔬菜、水果等。吸附筒20设置于储物间室内部，其内部设置有碳分子筛。空气压缩机30通过空气进气管40直接与吸附筒20连接，并受控地向吸附筒20提供压缩空气，以供碳分子筛利用压缩空气制备氮气。氮气储藏罐50相邻吸附筒20设置， 其进气端连接吸附筒20以接收由碳分子筛制备的氮气，其出气端连通储物空间11以向储物空间11提供氮气。
本实施例的冰箱利用PSA制氮方法，将空气中的氧气去除从而产生纯净的氮气，再将氮气注入储物空间11内部以实现使食品保鲜的目的。变压吸附PSA(Pressure Swing Adsorption)是目前生产气体的一项主流技术。变压吸附具体是指在温度不变的情况下，对混合气体进行加压，并利用吸附剂吸附多余的杂质气体从而获得较为纯净的单一气体，再用减压(抽真空)或常压的方法使得吸附剂内的杂质气体解吸出来，以对吸附剂进行二次利用。碳分子筛是目前实现氧氮分离、从空气中提取氮气的常用吸附剂，在吸附压力相同时，碳分子筛对氧的吸附量大大高于对氮的吸附量。PSA制氮方法利用这一原理，以空气为原料，运用变压吸附技术，利用碳分子筛对氧和氮的选择性吸附，实现空气中的氮和氧分离，从而生产出纯净的氮气。传统的PSA制氮装置大多用于大规模制氮，并且包括空气罐和油水分离装置，空气压缩机30工作压力大，体积庞大，结构复杂，不能满足为冰箱制氮的要求。
在本实施例中，空气压缩机30的工作压力仅为1.5至2个大气压，远小于大型制氮装置。由于工作压力小，本实施例的冰箱取消了大型制氮装置中起到缓冲作用的空气罐，简化了冰箱结构。另外，本实施例的冰箱还取消了大型制氮装置中对空气起到净化作用的油水分离装置，并在碳分子筛的前端设置空气干燥剂，以替代油水分离装置实现对空气净化的功能。并且，本实施例的吸附筒20以及氮气储藏罐50相较于大型制氮装置均进行了小型化处理，优选地使用塑料作为制作材料，有效降低了吸附筒20以及氮气储藏罐50的体积和重量，从而能够应用于冰箱内部。
本实施例的冰箱，通过对氮气制备系统的小型化设计，将氮气制备系统应用于冰箱内部，并至少将吸附筒20和氮气储藏罐50放置于储物间室内部，便于向储物空间11提供氮气。另外，氮气储藏罐50相邻吸附筒20设置，可使得冰箱内部结构紧凑、节省冰箱使用空间。
图2是根据本发明一个实施例的冰箱的储物间室内部的示意图。空气压缩机30设置于储物间室内部，并与吸附筒20相邻，空气压缩机30配置成从储物间室内部吸入空气并进行压缩，以向吸附筒20提供压缩空气。在本实施例中，上述储物间室优选为冰箱的冷藏室，储物空间11设置于冷藏室内，吸附筒20、空气压缩机30和氮气储藏罐50均设置于冷藏室，并且优选 地设置于储物空间11的后方，以使冰箱整体结构紧凑，节省了冰箱的使用空间，并且便于向储物空间11输送氮气。空气压缩机30从储物间室内部吸入空气并进行压缩，吸入的空气温度较低，产生的氮气温度同样较低，因此在氮气输入储物空间11内部时，不会引起储物空间11内部温度大幅度波动，有利于食品保鲜。
图3是根据本发明另一个实施例的冰箱的储物间室内部的示意图。在本实施例中，冰箱还包括：制氮盒体80(其前面板由于遮挡内部部件，未示出)。制氮盒体80设置于储物间室内部并贴靠箱体10的内壁，其内限定有容纳腔，以用于容纳吸附筒20、空气压缩机30和氮气储藏罐50。本实施例的冰箱将吸附筒20、空气压缩机30、氮气储藏罐50以及相关管路整合到制氮盒体80内部，可使得上述多个装置实现整体安装和拆卸，便于检查和维修。
图4是根据本发明另一个实施例的冰箱的示意图。该冰箱可以为风冷冰箱。空气压缩机30设置于冰箱的压机仓90内部，空气压缩机30配置成从压机仓90内部吸入空气并进行压缩，以向吸附筒20提供压缩空气。空气进气管40的至少部分区段沿冰箱的风道延伸并通向吸附筒20。空气由压机仓90进入空气压缩机30被压缩，温度会相对较高，若利用高温空气直接制氮，会产生温度较高的氮气，将高温氮气输入储物空间11会引起较大的温度波动，不利于食物的保鲜。在本实施例中，空气进气管40优选通过冰箱风道连接到储物间室内的吸附筒20，在通过冰箱的风道时，高温空气被风道内的冷空气冷却，再进入吸附筒20，由此产生的氮气温度相对较低，输入储物空间11不会引起较大的温度波动，有利于食物的保鲜。
本实施例的冰箱还包括：隔板12，设置于箱体10内部并分隔储物间室，使得储物间室被分割为多个储物区域。储物空间11设置于其中一个储物区域内，并且吸附筒20和氮气储藏罐50均设置于包含有储物空间11的同一储物区域内，以便于为储物空间11提供氮气。在本实施例中，储物空间11、吸附筒20和氮气储藏罐50优选地设置于储物间室下部的储物区域内。吸附筒20可以设置于箱体10内壁与隔板12形成的拐角处，并贴靠于箱体10内壁和隔板12，以节省储物间室内的使用空间。在一些可替代的实施例中，吸附筒20也可以设置于箱体10间形成的拐角处，并贴靠于箱体10内壁。
本实施例的空气压缩机30配置成在制备氮气的过程中，间隔地启动以向吸附筒20提供压缩空气；并且吸附筒20还配置成，在空气压缩机30暂 停的期间连通吸附筒20的外部环境，以使碳分子筛解吸出的富氧气体排出至外部环境。本实施例的冰箱，其制氮原理具体为，空气压缩机30间隔地启动向吸附筒20提供压缩空气，在空气压缩机30开启时，吸附筒20内部的气压升高，碳分子筛对空气中的氧气进行吸附，并将剩余的氮气输入至氮气储藏罐50，再由氮气储藏罐50将氮气充入储物空间11内；在空气压缩机30暂停时，不再向吸附筒20提供压缩空气，同时，吸附筒20连通外界环境，其内部气压降低，碳分子筛开始解吸，并将解吸出的富氧气体由连通外界的开口处排出。
本实施例的冰箱还包括三通电磁阀60。图5是根据本发明另一个实施例的冰箱的三通电磁阀60的示意图。三通电磁阀60设置于空气进气管40上，并具有三个输气口，其第一输气口61连通空气压缩机30，其第二输气口62连通吸附筒20，其第三输气口63连通外部环境，并且三通电磁阀60配置成，连通第一输气口61和第二输气口62以使得空气压缩机30向吸附筒20提供压缩空气，并在空气压缩机30暂停的期间，封闭第一输气口61，并连通第二输气口62和第三输气口63，以将吸附筒20解吸出的富氧气体由第三输气口63排入外部环境。上述第三输气口63可以连通至冰箱外部，将富氧气体从冰箱内部排出，也可以连通至冰箱内部其他需要富氧气体的储物空间，以对废气进行利用。
本实施例的冰箱还包括两通电磁阀70，两通电磁阀70设置于吸附筒20与氮气储藏罐50的连接管路上，且配置成在空气压缩机30暂停期间关闭吸附筒20与氮气储藏罐50的连接管路以防止氮气回流。
本实施例的冰箱还包括调流阀，调流阀设置于氮气储藏罐50通向储物空间11的管路上，且配置成调节氮气储藏罐50的气体输出流量。
图6是根据本发明另一个实施例的冰箱的控制方法的流程图。该控制方法依次执行以下步骤：
步骤S602，开启空气压缩机30，以使空气压缩机30对吸入的空气进行压缩。
步骤S604，连通第一输气口61与第二输气口62，开启两通电磁阀70，以允许空气压缩机30将压缩空气提供给吸附筒20，促使吸附筒20内气压升高。
步骤S606，对吸附筒20内压缩空气中的氧气进行吸附，并将剩余氮气 输送至氮气储藏罐50。具体地，吸附筒20内的碳分子筛吸附空气中的氧气，从而产生较为纯净的氮气，氮气经由输气管输送至氮气储藏罐50。在本实施例中，吸附过程可以持续30s-2min，优选为50s。
步骤S608，关闭空气压缩机30。
步骤S610，连通第二输气口62与第三输气口63，关闭两通电磁阀70，以使空气压缩机30停止向吸附筒20提供压缩空气，促使吸附筒20内气压降低。
步骤S612，解吸吸附筒20内的碳分子筛吸附的氧气，使氧气由第三输气口63排出吸附筒20。吸附筒20开始进行解吸，吸附筒20内的碳分子筛将吸附的氧气解吸出来，再由第三输气口63排出吸附筒20。在本实施例中，解吸过程可以持续30s-2min，优选为50s。
之后的流程重复上述循环，空气压缩机30间歇向吸附筒20提供压缩空气，吸附筒20交替进行吸附和解吸，间歇产生氮气，以提供给氮气储藏罐50。
本实施例提供了一种冰箱，包括：吸附筒20、空气压缩机30以及氮气储藏罐50。冰箱的储物间室内设置有密封的储物空间11。吸附筒20设置于储物间室内部，其内部设置有碳分子筛。空气压缩机30通过空气进气管40直接与吸附筒20连接，且配置成受控地向吸附筒20提供压缩空气，以供碳分子筛利用压缩空气制备氮气。氮气储藏罐50相邻吸附筒20设置，其进气端连接吸附筒20以接收由碳分子筛制备的氮气，其出气端连通储物空间11以向储物空间11提供氮气。本实施例的冰箱，其储物间室内部设置有用于食物保鲜的储物空间11，吸附筒20用于制备氮气，氮气储藏罐50将制备出的氮气向储物空间11提供，降低储物空间11内的氧气含量，从而提高冰箱的保鲜性能。
本实施例的冰箱，通过对氮气制备系统的小型化设计，至少将吸附筒20和氮气储藏罐50放置于储物间室内部，便于向储物空间11提供氮气。另外，氮气储藏罐50相邻吸附筒20设置，使得冰箱内部结构紧凑、节省冰箱使用空间。
进一步地，本实施例的冰箱，空气压缩机30设置于储物间室内部，并与吸附筒20相邻，空气压缩机30从储物间室内部吸入空气并进行压缩，以向吸附筒20提供压缩空气。本实施例的冰箱中，空气压缩机30和吸附筒20 均设置于储物间室内部，结构紧凑、节省冰箱使用空间。
至此，本领域技术人员应认识到，虽然本文已详尽示出和描述了本发明的多个示例性实施例，但是，在不脱离本发明精神和范围的情况下，仍可根据本发明公开的内容直接确定或推导出符合本发明原理的许多其他变型或修改。因此，本发明的范围应被理解和认定为覆盖了所有这些其他变型或修改。

Claims (10)

  1. 一种冰箱，包括：
    箱体，其内部限定有储物间室，所述储物间室内设置有密封的储物空间；
    吸附筒，设置于所述储物间室内部，其内部设置有碳分子筛；
    空气压缩机，通过空气进气管直接与所述吸附筒连接，且配置成受控地向所述吸附筒提供压缩空气，以供所述碳分子筛利用所述压缩空气制备氮气；以及
    氮气储藏罐，相邻所述吸附筒设置，其进气端连接所述吸附筒以接收由所述碳分子筛制备的氮气，其出气端连通所述储物空间以向所述储物空间提供氮气。
  2. 根据权利要求1所述的冰箱，其中
    所述空气压缩机设置于所述储物间室内部，并与所述吸附筒相邻，所述空气压缩机配置成从所述储物间室内部吸入空气并进行压缩，以向所述吸附筒提供压缩空气。
  3. 根据权利要求2所述的冰箱，还包括：
    制氮盒体，设置于所述储物间室内部并贴靠所述箱体的内壁，且其内限定有容纳腔，以用于容纳所述吸附筒、所述空气压缩机和所述氮气储藏罐。
  4. 根据权利要求1所述的冰箱，其中
    所述空气压缩机设置于所述冰箱的压机仓内部，所述空气压缩机配置成从所述压机仓内部吸入空气并进行压缩，以向所述吸附筒提供压缩空气。
  5. 根据权利要求4所述的冰箱，其中
    所述冰箱为风冷冰箱；且
    所述空气进气管的至少部分区段沿所述冰箱的风道延伸并通向所述吸附筒。
  6. 根据权利要求4所述的冰箱，还包括：
    隔板，设置于所述箱体内部以分隔所述储物间室；并且
    所述吸附筒设置于所述箱体内壁与所述隔板形成的拐角处，并贴靠于所述箱体内壁和所述隔板。
  7. 根据权利要求1所述的冰箱，其中
    所述空气压缩机配置成在制备氮气的过程中，间隔地启动以向所述吸附筒提供压缩空气；并且
    所述吸附筒还配置成，在所述空气压缩机暂停的期间连通所述吸附筒的外部环境，以使所述碳分子筛解吸出的富氧气体排出至外部环境。
  8. 根据权利要求7所述的冰箱，还包括：
    三通电磁阀，设置于所述空气进气管上，并具有三个输气口，其第一输气口连通所述空气压缩机，其第二输气口连通所述吸附筒，其第三输气口连通所述外部环境；并且
    所述三通电磁阀配置成，连通所述第一输气口和所述第二输气口以使得所述空气压缩机向所述吸附筒提供压缩空气，并在所述空气压缩机暂停的期间，封闭所述第一输气口，并连通所述第二输气口和所述第三输气口，以将所述吸附筒解吸出的富氧气体由所述第三输气口排入所述外部环境。
  9. 根据权利要求7所述的冰箱，还包括：
    两通电磁阀，设置于所述吸附筒与所述氮气储藏罐的连接管路上，配置成在所述空气压缩机暂停期间关闭所述吸附筒与所述氮气储藏罐的连接管路以防止氮气回流。
  10. 根据权利要求1所述的冰箱，还包括：
    调流阀，设置于所述氮气储藏罐通向所述储物空间的管路上，且配置成调节所述氮气储藏罐的气体输出流量。
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US20190150484A1 (en) 2019-05-23
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EP3467409B1 (en) 2021-05-05
RU2714760C1 (ru) 2020-02-19
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