CN111156776A - Oxygen-reducing fresh-keeping structure, refrigerator, oxygen-reducing fresh-keeping method and storage medium - Google Patents

Oxygen-reducing fresh-keeping structure, refrigerator, oxygen-reducing fresh-keeping method and storage medium Download PDF

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Publication number
CN111156776A
CN111156776A CN201911409127.8A CN201911409127A CN111156776A CN 111156776 A CN111156776 A CN 111156776A CN 201911409127 A CN201911409127 A CN 201911409127A CN 111156776 A CN111156776 A CN 111156776A
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CN
China
Prior art keywords
oxygen
drawer
electrolyte
exhaust pipe
anode
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Pending
Application number
CN201911409127.8A
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Chinese (zh)
Inventor
鲁礼明
李芳�
万晓春
肖剑
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Anhui Konka Tongchuang Household Appliances Co Ltd
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Anhui Konka Tongchuang Household Appliances Co Ltd
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Application filed by Anhui Konka Tongchuang Household Appliances Co Ltd filed Critical Anhui Konka Tongchuang Household Appliances Co Ltd
Priority to CN201911409127.8A priority Critical patent/CN111156776A/en
Publication of CN111156776A publication Critical patent/CN111156776A/en
Pending legal-status Critical Current

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    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • 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
    • F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment
    • 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
    • F25D2500/00—Problems to be solved
    • F25D2500/06—Stock management

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The invention provides an oxygen-reducing fresh-keeping structure, a refrigerator, an oxygen-reducing fresh-keeping method and a storage medium, which comprise the following steps: the electrolytic device comprises a drawer, a first air inlet pipe and a first exhaust pipe, wherein the drawer is communicated with the electrolytic device; the electrolysis device comprises an electrolysis container, electrolyte for consuming oxygen contained in the electrolysis container, an anode and a cathode immersed in the electrolyte, and a power supply arranged between the anode and the cathode; one end of the first air inlet pipe is arranged in the electrolyte, and the other end of the first air inlet pipe is communicated with the drawer; one end of the first exhaust pipe is connected with the electrolytic container and is arranged close to the cathode, and the other end of the first exhaust pipe is communicated with the drawer; and the first air inlet pipe and the first exhaust pipe are provided with air suction pumps. The drawer type food material processing device removes oxygen in the drawer by using the electrolyte, so that the oxygen in the drawer is rare, physiological and biochemical processes and microbial activities which cause food material spoilage are inhibited, user operation is not needed, energy consumption is low, cost is low, noise is low, and convenience is brought to people.

Description

Oxygen-reducing fresh-keeping structure, refrigerator, oxygen-reducing fresh-keeping method and storage medium
Technical Field
The invention relates to the technical field of refrigerators, in particular to an oxygen-reducing fresh-keeping structure, a refrigerator, an oxygen-reducing fresh-keeping method and a storage medium.
Background
With the improvement of life quality of people, the preservation requirement of people on stored food is higher and higher, so the color, taste, freshness and the like of the food stored in the refrigerator are kept unchanged as much as possible. The existing fresh-keeping method is generally vacuum fresh-keeping, and the vacuum fresh-keeping comprises vacuum bag fresh-keeping and vacuum storage chamber fresh-keeping. The vacuum bag is adopted for fresh keeping, and the vacuumizing action is required when people store food every time, which is very troublesome; the vacuum storage chamber is adopted for fresh keeping, and the box body is of a rigid structure, so that the vacuum state is kept, the requirement on a vacuum pumping system is high, the energy consumption is high, and the cost is high; both of these approaches are inconvenient for people.
Therefore, the prior art has defects and needs to be improved and developed.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an oxygen-reducing fresh-keeping structure, a refrigerator, an oxygen-reducing fresh-keeping method and a storage medium aiming at solving the problems that some vacuum fresh-keeping modes in the prior art are very troublesome, and some vacuum fresh-keeping modes are large in energy consumption and high in cost, which bring inconvenience to people.
The technical scheme adopted by the invention for solving the technical problem is as follows:
an oxygen-reducing preservation structure, comprising: the electrolytic device comprises a drawer, a first air inlet pipe and a first exhaust pipe, wherein the drawer is communicated with the electrolytic device; the electrolysis device comprises an electrolysis container, electrolyte for consuming oxygen contained in the electrolysis container, an anode and a cathode immersed in the electrolyte, and a power supply arranged between the anode and the cathode; one end of the first air inlet pipe is arranged in the electrolyte, and the other end of the first air inlet pipe is communicated with the drawer; one end of the first exhaust pipe is connected with the electrolytic container and is arranged close to the cathode, and the other end of the first exhaust pipe is communicated with the drawer; and the first air inlet pipe and the first exhaust pipe are provided with air suction pumps.
The oxygen reduction fresh-keeping structure, wherein, oxygen reduction fresh-keeping structure still includes: and one end of the second exhaust pipe is arranged on one side of the anode, and the other end of the second exhaust pipe is communicated with the outside of the drawer.
The oxygen reduction and preservation structure is characterized in that the second exhaust pipe is arranged above the anode and is immersed in the electrolyte;
or a partition board is arranged between the anode and the cathode, the partition board is arranged above the electrolyte, and the second exhaust pipe is arranged on the upper end face of the electrolytic container on one side of the anode.
The oxygen reduction and preservation structure is characterized in that the electrolyte is ferrous sulfate electrolyte, and the anode and the cathode are inert electrodes.
The oxygen reduction and preservation structure is characterized in that the electrolytic container is a corrosion-resistant container and is arranged in a sealed manner.
The oxygen-reducing and fresh-keeping structure is characterized in that the pH value of the ferrous sulfate electrolyte is less than 3.
The oxygen reduction and preservation structure is characterized in that an iron active filter membrane is arranged on the cathode.
The invention also provides a refrigerator, which comprises the oxygen-reducing and fresh-keeping structure.
The invention also provides an oxygen-reducing preservation method based on the oxygen-reducing preservation structure, which is characterized by comprising the following steps:
starting the air pump, and conveying air in the drawer to the electrolyte by the first air inlet pipe;
the electrolyte reacts with oxygen in the air to remove oxygen from the air;
and conveying the deaerated air to the drawer through a first exhaust pipe.
The present invention also provides a storage medium, wherein the storage medium stores a computer program, and the computer program can be executed for realizing the oxygen reduction and preservation method.
The invention provides an oxygen-reducing fresh-keeping structure, a refrigerator, an oxygen-reducing fresh-keeping method and a storage medium, which comprise the following steps: the electrolytic device comprises a drawer, a first air inlet pipe and a first exhaust pipe, wherein the drawer is communicated with the electrolytic device; the electrolysis device comprises an electrolysis container, electrolyte for consuming oxygen contained in the electrolysis container, an anode and a cathode immersed in the electrolyte, and a power supply arranged between the anode and the cathode; one end of the first air inlet pipe is arranged in the electrolyte, and the other end of the first air inlet pipe is communicated with the drawer; one end of the first exhaust pipe is connected with the electrolytic container and is arranged close to the cathode, and the other end of the first exhaust pipe is communicated with the drawer; and the first air inlet pipe and the first exhaust pipe are provided with air suction pumps. The drawer type food material processing device removes oxygen in the drawer by using the electrolyte, so that the oxygen in the drawer is rare, physiological and biochemical processes and microbial activities which cause food material spoilage are inhibited, user operation is not needed, energy consumption is low, cost is low, noise is low, and convenience is brought to people.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of the oxygen-reducing fresh-keeping structure of the present invention.
FIG. 2 is a schematic structural view of another preferred embodiment of the oxygen-reducing fresh-keeping structure of the present invention.
FIG. 3 is a flow chart of the preferred embodiment of the oxygen-reducing fresh-keeping method of the present invention.
Description of reference numerals:
110. an electrolytic vessel; 120. an electrolyte; 130. an anode; 140. a cathode; 150. a power source; 160. a partition plate; 200. a drawer; 300. a first intake pipe; 400. a first exhaust pipe; 500. an air pump; 600. a second exhaust pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and fig. 2, the oxygen-reducing fresh-keeping structure provided by the present invention comprises: the electrolytic device, the drawer 200 connected with the electrolytic device, the first air inlet pipe 300 and the first air outlet pipe 400. The electrolysis apparatus includes an electrolysis vessel 110, an electrolyte 120 for consuming oxygen gas contained in the electrolysis vessel 110, an anode 130 and a cathode 140 immersed in the electrolyte 120, and a power source 150 disposed between the anode 130 and the cathode 140. Preferably, the power source 150 is a dc power source 150. One end of the first air inlet pipe 300 is arranged in the electrolyte 120, preferably, one side close to the cathode 140, and the other end of the first air inlet pipe 300 is communicated with the drawer 200; one end of the first exhaust pipe 400 is connected to the electrolytic vessel 110 and is disposed near the cathode 140, and preferably, an exhaust hole is formed in the upper end surface of the electrolytic vessel 110, and the exhaust hole is communicated with one end of the first exhaust pipe 400. The other end of the first exhaust pipe 400 is communicated with the drawer 200; the first intake pipe 300 and the first exhaust pipe 400 are provided with an air pump 500. In the preferred embodiment of the present invention, the electrolysis device may be disposed outside the drawer 200, or may be disposed inside the drawer 200. Thus, when the air pump 500 is turned on, the first air inlet pipe 300 conveys air in the drawer 200 to the electrolyte 120, the electrolyte 120 reacts with oxygen in the air to remove oxygen from the air, and the air after oxygen removal is conveyed to the drawer 200 through the first air outlet pipe 400; thus, oxygen in the drawer 200 is reduced, and the food material fresh-keeping effect is achieved. When air is continuously introduced at the cathode 140, the overall reaction is to consume oxygen at the cathode 140 and produce oxygen at the anode 130.
The invention utilizes the principle of air-conditioned storage, changes the composition of normal air in the storage environment at proper low temperature, reduces the oxygen concentration in the drawer 200, reduces the respiratory intensity of food, delays the metabolism speed, and inhibits the growth and the reproduction of microorganisms and the change of chemical components in the food, thereby achieving the purposes of prolonging the storage period and improving the storage effect. That is, the present invention removes oxygen in the drawer 200 by the electrolyte 120, so that the oxygen in the drawer 200 is rare, so as to inhibit the physiological and biochemical processes and microbial activities causing food material spoilage, and the present invention has the advantages of no need of user operation, low energy consumption, low cost, low noise, and convenience for people.
Further, the electrolyte 120 is a ferrous sulfate electrolyte 120, and the anode 130 and the cathode 140 are both inert electrodes. The inert electrode is used for conducting electricity, so that the side reaction can be prevented. Thus, the ferrous ions in the electrolyte 120 react with the oxygen supplied from the first air inlet tube 300 to become ferric ions, the ferric ions are reduced to ferrous ions by electrolysis at the cathode 140, and oxygen generated by the anode is discharged into the space without oxygen reduction function. The reduced ferrous ions can repeatedly react with oxygen in the air, thereby continuously reducing the oxygen content in the drawer 200.
Specifically, the reaction of oxygen in the air with ferrous sulfate produces ferric sulfate, 12FeSO4+3O2+6H2O＝＝4Fe2(SO4)3。Fe3+Electrons are obtained at the cathode 140 to become Fe2+；OH-Losing electrons at the anode 130 to become oxygen. And the relation regarding the oxidizing property is Fe3+Greater than H+Greater than Fe2+Thus, in Fe3+Does not generate H under the existence2And no Fe simple substance is generated in the solution. With respect to reducibility, OH-Is larger than sulfate ions, so the sulfate ions can not be electrolyzed and OH-can be electrolyzed to generate oxygen.
In a preferred embodiment of the present invention, the oxygen-reducing fresh-keeping structure further comprises: and one end of the second exhaust pipe 600 is arranged at the lower end of the anode 130, and the other end of the second exhaust pipe 600 is communicated with the outside of the drawer 200. Preferably, the second exhaust pipe 600 may be provided with an on-off valve, which is closed when it is not necessary to exhaust oxygen, to prevent oxygen in the external air from reacting with the solution.
Further, when the gas in the electrolyte is discharged, there are two implementations. Referring to fig. 1, in a first embodiment, the second exhaust pipe is disposed above the anode and is immersed in the electrolyte. Thus, oxygen generated at the anode is directly discharged from the second exhaust pipe.
Referring to fig. 2, in the second embodiment, a separator 160 is disposed between the anode 130 and the cathode 140, the separator 160 is disposed above the electrolyte 120, and the second exhaust pipe is disposed on the upper end surface of the electrolytic container on the anode side. That is, the upper space of the anode 130 and the cathode 140 is divided into two separate spaces by the partition 160, the air at the upper portion of the anode 130 is communicated with the second exhaust pipe, i.e., the space having no oxygen reduction function, and the upper portion of the cathode 140 is communicated with the first exhaust pipe, i.e., the inside of the space having the oxygen reduction function (the drawer 200).
In the preferred embodiment of the present invention, the electrolytic vessel 110 is a corrosion-resistant vessel and is hermetically sealed. Since the solution is highly acidic and sulfuric acid is corrosive, the electrolytic vessel 110 is made of a corrosion-resistant material. Because the anode 130 can generate oxygen, a second exhaust pipe 600 for exhausting oxygen is arranged at the lower end of the anode 130, and the other end of the second exhaust pipe 600 is communicated with the outside of the drawer 200, so that the oxygen is directly exhausted to the space without the oxygen reduction function after being generated. The electrolytic vessel 110 is hermetically sealed to prevent external oxygen from contacting the electrolyte 120 and dissolving into the electrolyte 120.
In the preferred embodiment of the present invention, to prevent Fe (OH)3Solids are generated and the PH of the ferrous sulfate electrolyte 120 is less than 3.
An iron active filter membrane is arranged on the cathode 140, and the iron active filter membrane is a catalyst and can accelerate the oxygen and Fe dissolved in the electrolyte 1202+Reaction to produce Fe3+. The cathode 140 has slow reaction of consuming oxygen, and the catalyst is used for removing iron impurities when being used for extracting manganese ore industrially, and has the function of catalyzing and improving oxygen and Fe2+The effect of the reaction rate.
Further, when oxygen in the air is consumed or the concentration of the oxygen is not enough to react with ferrous ions to generate ferric ions, the electrolytic ferrous sulfate solution is equivalent to electrolytic water, and hydrogen is generated at the negative electrode. And the color of the solution can be the color of ferrous ions and is obviously different from the color of ferric ions. Therefore, the power supply 150 can be controlled to be switched on and off according to the difference of colors through the identification of the sensor, and the power supply 150 can be switched off in time, so that the generation of hydrogen is avoided.
In addition, the gas molar volume of the oxygen content in the air is 22.4L/mol, so that 1L of gas contains 1/22.4X 0.2 of oxygen, which is about 0.00893mol of oxygen; the solubility of oxygen in 1L of aqueous solution was 0.049L at around zero degrees centigrade, and was approximately 0.002188mol of oxygen. Thus, the rate of oxygen production by the reaction can be measured by the drainage method. The voltage of the dc power source 150 and the distance between the electrodes are adjusted to accelerate the reaction at the cathode 140, and the oxygen generation rate at the anode 130 is considered to be equal to the oxygen consumption rate at the cathode.
The invention also provides a refrigerator, which comprises the oxygen-reducing and fresh-keeping structure; as described above.
Referring to fig. 3, the present invention further provides an oxygen-reducing preservation method implemented based on the above-mentioned oxygen-reducing preservation structure, including:
s100, starting an air extraction pump, and conveying air in the drawer to electrolyte by using a first air inlet pipe;
s200, reacting the electrolyte with oxygen in the air to remove oxygen from the air;
and S300, conveying the deaerated air into the drawer through a first exhaust pipe.
Preferably, step S300 is followed by:
when Fe is in the electrolyte2+More change into Fe3+When the air pump is turned off, the power supply is turned on, and Fe in the electrolyte3+More change into Fe2+，OH-And the oxygen is changed into oxygen at the anode and is exhausted to the outside of the drawer through a second exhaust pipe.
The invention also provides a storage medium, wherein the storage medium stores a computer program which can be executed for realizing the oxygen-reducing fresh-keeping method; as described above.
In summary, the oxygen-reducing preservation structure, the refrigerator, the oxygen-reducing preservation method and the storage medium disclosed by the invention comprise: the electrolytic device comprises a drawer, a first air inlet pipe and a first exhaust pipe, wherein the drawer is communicated with the electrolytic device; the electrolysis device comprises an electrolysis container, electrolyte for consuming oxygen contained in the electrolysis container, an anode and a cathode immersed in the electrolyte, and a power supply arranged between the anode and the cathode; one end of the first air inlet pipe is arranged in the electrolyte, and the other end of the first air inlet pipe is communicated with the drawer; one end of the first exhaust pipe is connected with the electrolytic container and is arranged close to the cathode, and the other end of the first exhaust pipe is communicated with the drawer; and the first air inlet pipe and the first exhaust pipe are provided with air suction pumps. The drawer type food material processing device removes oxygen in the drawer by using the electrolyte, so that the oxygen in the drawer is rare, physiological and biochemical processes and microbial activities which cause food material spoilage are inhibited, user operation is not needed, energy consumption is low, cost is low, noise is low, and convenience is brought to people.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.

Claims (10)

1. An oxygen reduction and preservation structure, comprising: the electrolytic device comprises a drawer, a first air inlet pipe and a first exhaust pipe, wherein the drawer is communicated with the electrolytic device; the electrolysis device comprises an electrolysis container, electrolyte for consuming oxygen contained in the electrolysis container, an anode and a cathode immersed in the electrolyte, and a power supply arranged between the anode and the cathode; one end of the first air inlet pipe is arranged in the electrolyte, and the other end of the first air inlet pipe is communicated with the drawer; one end of the first exhaust pipe is connected with the electrolytic container and is arranged close to the cathode, and the other end of the first exhaust pipe is communicated with the drawer; and the first air inlet pipe and the first exhaust pipe are provided with air suction pumps.
2. The oxygen reduction and freshness preservation structure of claim 1, further comprising: and one end of the second exhaust pipe is arranged on one side of the anode, and the other end of the second exhaust pipe is communicated with the outside of the drawer.
3. The oxygen-reducing fresh-keeping structure according to claim 2, wherein the second exhaust pipe is disposed above the anode and immersed in the electrolyte;
or a partition board is arranged between the anode and the cathode, the partition board is arranged above the electrolyte, and the second exhaust pipe is arranged on the upper end face of the electrolytic container on one side of the anode.
4. An oxygen-reducing and freshness-retaining structure according to claim 1, wherein said electrolyte is a ferrous sulphate electrolyte and said anode and cathode are both inert electrodes.
5. The oxygen-reducing preservation structure according to claim 1, wherein the electrolytic vessel is a corrosion-resistant vessel and is hermetically sealed.
6. An oxygen-reducing freshness-retaining structure according to claim 4, wherein the pH of the ferrous sulfate electrolyte is less than 3.
7. An oxygen-reducing fresh-keeping structure as claimed in claim 4, wherein the cathode is provided with an iron active filter membrane.
8. A refrigerator comprising the oxygen reduction and freshness keeping structure according to any one of claims 1 to 7.
9. An oxygen-reducing preservation method implemented based on the oxygen-reducing preservation structure according to any one of claims 1 to 7, comprising:
starting the air pump, and conveying air in the drawer to the electrolyte by the first air inlet pipe;
the electrolyte reacts with oxygen in the air to remove oxygen from the air;
and conveying the deaerated air to the drawer through a first exhaust pipe.
10. A storage medium, characterized in that the storage medium stores a computer program executable for implementing the oxygen reduction and freshness preservation method according to claim 9.
CN201911409127.8A 2019-12-31 2019-12-31 Oxygen-reducing fresh-keeping structure, refrigerator, oxygen-reducing fresh-keeping method and storage medium Pending CN111156776A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022068913A1 (en) * 2020-09-30 2022-04-07 海信容声(广东)冰箱有限公司 Refrigerator
CN114383353A (en) * 2020-10-19 2022-04-22 海信（山东）冰箱有限公司 Refrigerator with a door
WO2023169341A1 (en) * 2022-03-07 2023-09-14 青岛海尔电冰箱有限公司 Oxygen treatment apparatus for refrigerator and refrigerator having oxygen treatment apparatus

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022068913A1 (en) * 2020-09-30 2022-04-07 海信容声(广东)冰箱有限公司 Refrigerator
CN114383353A (en) * 2020-10-19 2022-04-22 海信（山东）冰箱有限公司 Refrigerator with a door
WO2023169341A1 (en) * 2022-03-07 2023-09-14 青岛海尔电冰箱有限公司 Oxygen treatment apparatus for refrigerator and refrigerator having oxygen treatment apparatus

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Application publication date: 20200515