CN109855375B - Refrigerating and freezing device and deoxygenation control method thereof - Google Patents

Refrigerating and freezing device and deoxygenation control method thereof Download PDF

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Publication number
CN109855375B
CN109855375B CN201711243253.1A CN201711243253A CN109855375B CN 109855375 B CN109855375 B CN 109855375B CN 201711243253 A CN201711243253 A CN 201711243253A CN 109855375 B CN109855375 B CN 109855375B
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China
Prior art keywords
oxygen removal
removal assembly
fan
electrolytic
storage container
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CN201711243253.1A
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CN109855375A (en
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刘浩泉
姜波
刘昀曦
辛若武
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Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Co Ltd
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Priority to CN201711243253.1A priority Critical patent/CN109855375B/en
Priority to PCT/CN2018/118268 priority patent/WO2019105428A1/en
Publication of CN109855375A publication Critical patent/CN109855375A/en
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    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
    • A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
    • A23L3/34—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals
    • A23L3/3409—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
    • A23L3/3418—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs 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
    • 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
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • 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
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • 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
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • 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

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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)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

The invention provides a refrigerating and freezing device and an oxygen removal control method thereof. Wherein, the inside storing container that has of cold-stored refrigeration device, storing container surface are provided with electrolysis deoxidization subassembly, and electrolysis deoxidization subassembly includes: the device comprises an anode plate, a cathode plate, a proton exchange membrane, a battery and a fan for blowing water vapor to the anode plate, wherein two poles of the battery are controllably connected with the anode plate and the cathode plate, and an electrolytic oxygen removal assembly is configured to consume oxygen inside a storage container through electrolytic reaction. According to the method, when the user opens the door body of the refrigerating and freezing device, the fan of the electrolytic oxygen removal assembly is automatically closed or the closed state of the fan is kept, so that the influence of noise generated by the fan on the user when the user uses the refrigerating and freezing device is prevented, and the use silence of the refrigerating and freezing device is realized.

Description

Refrigerating and freezing device and deoxygenation control method thereof
Technical Field
The invention relates to the field of refrigeration and freezing, in particular to a refrigeration and freezing device and an oxygen removal control method thereof.
Background
Modified atmosphere technology generally refers to technology for prolonging the storage life of food by adjusting the gas atmosphere (gas component ratio or gas pressure) of a closed space where stored objects are located, and the basic principle is as follows: in a certain closed space, a gas atmosphere different from normal air components is obtained through various regulation modes so as to inhibit physiological and biochemical processes and activities of microorganisms which cause the putrefaction and deterioration of stored objects (generally food materials). In particular, in the present application, the modified atmosphere preservation discussed will be specific to modified atmosphere preservation techniques that regulate the proportions of the gas components.
As is known to those skilled in the art, the normal air composition includes (in volume percent, the same applies hereinafter): in the modified atmosphere preservation field, nitrogen-rich gas is generally used to obtain a nitrogen-rich and oxygen-poor preservation gas atmosphere by filling a nitrogen-rich gas into a closed space to reduce the oxygen content, wherein the nitrogen-rich gas is a gas with a nitrogen content exceeding that of the normal air, and the nitrogen content can be 95% -99% or even higher, for example, while the nitrogen-rich and oxygen-poor preservation gas atmosphere is a gas atmosphere with a nitrogen content exceeding that of the normal air and an oxygen content lower than that of the normal air.
The history of modified atmosphere technology dates back to 1821 German biologists that fruits and vegetables can reduce the onset of metabolism at low oxygen levels. However, until now, the technology has been limited to use in large professional storage facilities (storage capacity is typically at least 30 tons) due to the large size and high cost of the nitrogen generating equipment traditionally used for modified atmosphere preservation. It can be said that the adoption of proper gas conditioning technology and corresponding devices can economically miniaturize and mute the gas conditioning system, so that the system is suitable for families or individual users, and is a technical problem which is desired to be solved by technicians in the field of gas conditioning preservation and is not successfully solved all the time.
Disclosure of Invention
In view of the above problems, the present invention has been made to provide a refrigerating and freezing apparatus and an oxygen removal control method thereof that overcome or at least partially solve the above problems.
It is an object of the present invention to provide a gaseous atmosphere that is rich in nitrogen and lean in oxygen to facilitate the preservation of food.
It is another object of the present invention to achieve quieting of the electrolytic oxygen removal assembly.
It is another object of the present invention to save energy and increase the useful life of the electrolytic oxygen removal assembly.
In one aspect, the invention provides a method for controlling oxygen removal of a refrigeration and freezing device, wherein a storage container is arranged in the refrigeration and freezing device, an electrolytic oxygen removal assembly is arranged on the surface of the storage container, and the electrolytic oxygen removal assembly comprises: the device comprises an anode plate, a cathode plate, a proton exchange membrane, a battery and a fan for blowing water vapor to the anode plate, wherein two poles of the battery are controllably connected with the anode plate and the cathode plate, an electrolytic oxygen removal assembly is configured to consume oxygen inside a storage container through electrolytic reaction, and the control method comprises the following steps: detecting a door opening trigger signal of the refrigerating and freezing device; judging whether the electrolytic deoxygenation assembly is in a working state; if so, independently turning off the fan; if not, keeping the disconnection state of the battery power supply connection and the closing state of the fan until detecting a door closing trigger signal.
Optionally, the step of separately turning off the fan further includes: judging whether an opening trigger signal of the storage container is detected or not; if so, disconnecting the power supply connection of the battery to enable the electrolytic oxygen removal assembly to pause; if not, the electrolytic oxygen removal assembly is controlled to continuously work under the condition that the fan is kept closed.
Optionally, the step of disconnecting the power supply from the battery to suspend operation of the electrolytic oxygen removal assembly further comprises: judging whether a closing trigger signal of the storage container and a closing trigger signal of the door body are detected or not; if so, the power supply connection of the battery is reconnected, the fan is started, and the electrolytic oxygen removal assembly is controlled to operate according to a preset working mode.
Optionally, the step of controlling the electrolytic oxygen removal assembly to continuously work in a state of keeping the fan off further includes: judging whether a closing trigger signal of the door body is detected or not; if yes, the fan is restarted, and the deoxidizing component is controlled to operate according to a preset working mode.
Optionally, the step of controlling the electrolytic oxygen removal assembly to continuously work in a state of keeping the fan off further includes: judging whether a closing trigger signal of the door body is detected or not; if yes, the fan is restarted, and the deoxidizing component is controlled to operate according to a preset working mode.
Optionally, the preset operation mode is set as: after the electrolytic deoxidizing component is connected with the power supply connection of the battery and continuously works for a first preset time, the power supply connection of the battery is disconnected, the work is suspended for a second preset time, and the intermittent start-stop work in the steps is circulated; the fan is started in the time period that the electrolytic oxygen removal assembly continuously works and is closed in the time period that the electrolytic oxygen removal assembly stops working.
In another aspect, the present invention provides a refrigeration and freezing apparatus, including: a box body, the interior of which forms a storage compartment of the refrigerating and freezing device; a door body openably and closably arranged at the front side of the box body; a storage container arranged in the storage room and having a storage space formed therein; the electrolytic oxygen removal assembly is detachably arranged on the surface of the storage container and is configured to consume oxygen inside the modified atmosphere preservation space through an electrolytic reaction; wherein the electrolytic oxygen removal assembly comprises: an anode plate configured to electrolyze water vapor to generate hydrogen ions and oxygen; a cathode plate configured to generate water by reacting hydrogen ions with oxygen; a proton exchange membrane sandwiched between the cathode plate and the anode plate, configured to transport hydrogen ions from the anode plate side to the cathode plate side; the fan is arranged on one side of the anode plate, which faces away from the proton exchange membrane, and is used for blowing the water vapor outside the storage container to the anode plate; the door body opening and closing detection device is arranged on the door body or the box body and is configured to generate an opening trigger signal or a closing trigger signal of the door body when the door body is opened or closed; the state detection device is electrically connected with the electrolytic oxygen removal assembly and is configured to detect the working state of the electrolytic oxygen removal assembly; the electrolytic deoxygenation assembly is electrically connected with the door body opening and closing detection device and is configured to independently close the fan under the conditions that an opening trigger signal of the door body is received and the electrolytic deoxygenation assembly is in a working state; under the condition that the opening trigger signal of the door body is received and the electrolytic oxygen removal assembly is in a non-working state, the disconnection state of the battery power supply connection and the closing state of the fan are kept until the door body closing trigger signal is detected.
Optionally, the refrigeration and freezing apparatus further comprises: the device comprises a storage container opening and closing detection device, a storage container opening and closing detection device and a control device, wherein the storage container opening and closing detection device is arranged on a storage container and is configured to generate an opening trigger signal and a closing trigger signal of the storage container when the storage container is opened or closed; wherein the electrolytic oxygen removal assembly is further configured to: under the condition of receiving an opening trigger signal of the storage container, disconnecting the power supply connection of the battery and suspending the work; under the condition that the opening trigger signal of the storage container is not received, the fan is kept closed, and the fan continuously works.
Optionally, the electrolytic oxygen removal assembly is further configured to: under the condition that the closing trigger signal of the storage container and the closing trigger signal of the door body are detected, the power supply connection of the battery is switched on again, the fan is started, and the storage container operates according to a preset working mode.
Optionally, the electrolytic oxygen removal assembly is further configured to: and under the condition that a closing trigger signal of the door body is detected, the fan is restarted and operates according to a preset working mode.
Optionally, the electrolytic oxygen removal assembly is further configured to: under the condition that the door body is kept closed, after the door body continuously works for a first preset time, the door body stops working for a second preset time, and the steps are circulated to intermittently start and stop working; and controlling the fan to be started in the time period when the electrolytic oxygen removal assembly continuously works and to be closed in the time period when the electrolytic oxygen removal assembly stops working.
The invention provides a deoxidizing control method of a refrigerating and freezing device, wherein a storage container is arranged in the refrigerating and freezing device, an electrolytic deoxidizing component is arranged on the surface of the storage container, and the electrolytic deoxidizing component comprises the following components: the device comprises an anode plate, a cathode plate, a proton exchange membrane, a battery and a fan for blowing water vapor to the anode plate, wherein two poles of the battery are controllably connected with the anode plate and the cathode plate, and an electrolytic oxygen removal assembly is configured to consume oxygen inside a storage container through electrolytic reaction. According to the method, when the user opens the door body of the refrigerating and freezing device, the fan of the electrolytic oxygen removal assembly is automatically closed or the closed state of the fan is kept, so that the influence of noise generated by the fan on the user when the user uses the refrigerating and freezing device is prevented, and the use silence of the refrigerating and freezing device is realized.
Further, the method of the present invention further comprises: when detecting that the user opens the storage container, the power supply connection of battery and positive plate, negative plate makes electrolysis deoxidization subassembly pause work. When the user was opening storing container, storing space and external environment intercommunication, its inside gas atmosphere was destroyed, even electrolysis deoxidization subassembly continues work also can't realize the deoxidization effect, at this moment, in time breaks off being connected of battery and negative plate and anode plate, the battery energy can be saved, can also improve the life of electrolysis deoxidization subassembly simultaneously.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic view of a storage container of a refrigerated freezing apparatus according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of an electrolytic oxygen scavenging assembly of a refrigeration freezer in accordance with one embodiment of the present invention;
FIG. 3 is an exploded schematic view of an electrolytic oxygen scavenging assembly of a refrigeration freezer in accordance with one embodiment of the present invention;
FIG. 4 is a schematic view of a containment case for an electrolytic oxygen scavenging assembly of a refrigerated freezer in accordance with one embodiment of the present invention;
fig. 5 is an enlarged schematic view of an opening of a storage container of a refrigeration and freezing apparatus according to an embodiment of the present invention;
fig. 6 is an exploded schematic view of a storage container of a refrigeration freezer in accordance with one embodiment of the present invention;
FIG. 7 is a schematic interior view of a refrigeration freezer apparatus according to one embodiment of the invention;
FIG. 8 is a schematic block diagram of a refrigeration freezer apparatus according to one embodiment of the present invention;
fig. 9 is a schematic diagram of a method of oxygen removal control for a refrigeration freezer in accordance with one embodiment of the present invention;
fig. 10 is a flowchart of a method of oxygen removal control for a refrigeration freezer in accordance with one embodiment of the present invention.
Detailed Description
As shown in fig. 1 and 2, an embodiment of the present invention first provides a storage container 100 for a refrigeration and freezing apparatus, including: cartridge 110, electrolytic oxygen scavenging assembly 200. A storage space is defined in the box body 110, and an opening is provided on the top surface of the box body 110. An electrolytic oxygen scavenging assembly 200 is formed at the opening and is configured to consume oxygen within the modified atmosphere space via an electrolytic reaction.
In this embodiment, the opening is a rectangular opening for mounting the electrolytic oxygen scavenging assembly 200. The electrolytic oxygen removal assembly 200 is sized to fit the opening so that it can completely close the opening and prevent gas exchange between the interior of the storage space and the outside.
As shown in fig. 3, electrolytic oxygen scavenging assembly 200 comprises: a cell, an anode plate 220, a cathode plate 230, and a proton exchange membrane 210 sandwiched between the cathode plate 230 and the anode plate 220. The battery can be arranged on the storage container and also can be arranged outside the storage container. The surface of the cathode plate 230 facing away from the pem 210 is at least partially exposed to the interior of the storage space, and the surface of the anode plate 220 facing away from the pem 210 is at least partially exposed to the exterior of the storage space. That is, the electrolytic oxygen removal assembly 200 has at least 3 layers, which are an anode plate 220, a proton exchange membrane 210 and a cathode plate 230 from top to bottom, wherein the anode plate 220 faces the outside of the storage space, and the cathode plate 230 faces the inside of the storage space. Each layer of structure is parallel to the plane of the opening, and the area of each layer is the same as the size of the opening.
Preferably, the cathode plate 230 and the anode plate 220 are carbon electrode plates or platinum electrode plates, and carbon electrodes with platinum plating on the surfaces are generally used. The edges of the anode plate 220 and the cathode plate 230 are each provided with a terminal, an anode plate terminal 221 and a cathode plate terminal 231, respectively, for connecting the anode and cathode of the cell, respectively. The cell provides electrons to the cathode plate 230 while the anode plate 220 provides electrons to the cell anode. The anode plate 220 is configured to electrolyze water vapor, producing protons and oxygen. The proton exchange membrane 210 is configured to transport protons from the anode plate 220 side to the cathode plate 230 side. The cathode plate 230 is configured to generate water by reacting protons and oxygen. Wherein, the chemical reaction formula of anode plate and negative plate is respectively:
an anode plate: 2H2O→O2+4H++4e-
A negative plate: o is2+4H++4e-→2H2O
Specifically, the anode of the battery charges the anode plate 220, water vapor outside the storage container 100 is electrolyzed at one side of the anode plate 220 to generate hydrogen ions and oxygen, the oxygen is discharged to the outside of the storage space, and the hydrogen ions enter the proton exchange membrane 210. The cathode of the battery charges the cathode plate 230 and provides electrons to the cathode plate 230, and the hydrogen ions provided by the proton exchange membrane 210 react with the oxygen inside the storage space on one side of the cathode plate 230 to generate water, thereby consuming the oxygen inside the storage space.
The proton exchange membrane 210 includes: a proton-conducting polymer, a porous membrane, and at least one active ingredient. At least one active ingredient is dispersed in the proton-conducting polymer, and the proton-conducting polymer is absorbed into and fills the pores of the porous film. The proton exchange membrane 210 serves to allow hydrogen ions to pass through, so that hydrogen ions generated by the reaction of the anode plate 220 are transported to the cathode plate 230 for reaction of the cathode plate 230.
Preferably, the proton conducting polymer is polystyrene sulfonic acid (PSSA) or carboxymethyl cellulose (CMC). The porous membrane is Polytetrafluoroethylene (PTFE) or Fluorinated Ethylene Propylene (FEP) or polyolefin film or fluorinated ethylene propylene or glass fiber or ceramic fiber or polymer fiber; the active component is silica gel suitable for electroosmotic flow, and the dispersed silica gel concentration is no more than 5% of the mass of the proton exchange membrane.
In this embodiment, the electrolytic oxygen scavenging assembly 200 may further comprise: two elastic plates 240 are respectively disposed at the outer sides of the anode plate 220 and the cathode plate 230 for clamping the anode plate 220, the proton exchange membrane 210 and the cathode plate 230. The electrolytic oxygen removing assembly 200 further comprises a plurality of fastening screws, a plurality of screw holes 201 are formed in the positions, close to the edges, of the two elastic plates 240, the anode plate 220, the proton exchange membrane 210 and the cathode plate 230, and each fastening screw penetrates through the screw holes 201 in the same position of the plurality of parts in sequence to realize the fixation and clamping of the multilayer parts. The sides of the two elastic plates 240 facing the cathode plate 230 and the anode plate 220 are respectively provided with a plurality of elastic protrusions 284, and the positions of the elastic protrusions 284 on the two elastic plates 240 correspond, that is, each elastic protrusion 284 can be matched with one elastic protrusion 284 on the other plate to press the anode plate 220 and the cathode plate 230 together for further clamping the proton exchange membrane 210. The middle part of each elastic plate 240 is hollowed out, or a plurality of air holes are uniformly formed, so as to allow air to pass through.
In this embodiment, electrolytic oxygen scavenging assembly 200 can further comprise: a diffusion layer 270, an activated carbon filter screen, and one or more gaskets 260. The diffusion layer 270 is located between the anode plate 220 and the proton exchange membrane 210 and between the cathode plate 230 and the proton exchange membrane 210, and the material of the diffusion layer 270 is a titanium mesh with a platinum-plated surface, which is used for facilitating electric conduction and allowing water vapor to diffuse. The activated carbon filter screen is disposed on a side of the anode opposite to the proton exchange membrane 210 for purifying the gas entering the anode plate 220. At least one gasket 260 may be positioned between the above-described multi-layered structures, and each gasket 260 is a thin rectangular ring having the same size as the cathode plate 230 and the anode plate 220. Each gasket 260 is made of an elastic material to buffer a pressing force between adjacent layers.
Electrolytic oxygen scavenging assembly 200 further comprises: a fan 250. The fan 250 may be a micro axial fan 250. The blower 250 is disposed on a side of the anode plate 220 opposite to the proton exchange membrane 210, and a rotation axis of the blower is perpendicular to the anode plate 220, and is used for blowing the water vapor outside the storage container 100 toward the anode. The reactant of the anode plate of the electrolytic oxygen removal assembly 200 of this embodiment is water vapor, and therefore, the anode plate needs to be continuously replenished with water so that the electrolytic reaction can be continuously performed. When the electrolytic oxygen removal assembly 200 is turned on, the battery supplies power to the cathode plate 230 and the anode plate 220 respectively, the fan 250 is turned on, and the fan 250 blows air to the anode plate 220 and simultaneously blows water vapor in the air to the anode plate 220 so as to provide reactants to the anode plate 220. Because of the generally low internal temperature of a refrigeration and freezing apparatus, the storage compartment within the refrigeration and freezing apparatus has a relatively humid atmosphere, which contains a significant amount of water vapor in the air. Thus, the air in the storage compartment can provide sufficient reactant to the anode plates 220 without the need for a separate water source or delivery device for the electrolytic oxygen scavenging assembly 200.
In this embodiment, the multi-layer structure of the cathode plate 230, the anode plate 220, and the proton exchange membrane 210 are integrated into a container 280 to facilitate the assembly and disassembly of the electrolytic oxygen removal assembly 200. The receiving box 280 may be completely embedded in the box wall of the storage container 100, or may be partially embedded therein.
As shown in FIG. 4, the X direction is defined as the length direction of the housing box 280, Y is the width direction, and Z is the height direction. The top of the containing box 280 is opened with a rectangular mounting opening for installing each component in the electrolytic oxygen removing assembly 200, and the size of the mounting opening is matched with the size of the cathode plate 230 and the anode plate 220. The bottom surface of the containment box 280 is hollowed out to allow gas to pass through, and in this embodiment, a cross bracket 286 is also secured to the bottom surface of the containment box 280 to support the various components of the electrolytic oxygen removal assembly 200.
One of the side walls of the accommodation box 280 is also provided with two through holes 285 to allow the anode plate terminal 221 and the cathode plate terminal 231 to protrude. The anode plate terminal 221 or the cathode plate terminal 231 extends out of the containing box 280 and then is connected with the cathode and the anode of the external battery through a line.
The edge of the mounting opening also has a collar 282 projecting outwardly of the receptacle 280 for overlapping the receptacle 280 at the edge of the opening in the box body. When the receptacle 280 is lapped at the opening edge of the box body, the flange 282 may seal the gap between the box body and the receptacle 280, preventing gas leakage inside the storage space. The flange 282 has at least two spaced notches 283, wherein the two notches 283 are positioned to face the anode plate terminal 221 and the cathode plate terminal 231 to expose the two terminals for easy connection of wires, and the notches 283 also provide convenience for a user to take the container 280 during the process of disassembling the electrolytic oxygen removal assembly 200.
As shown in FIG. 5, a plurality of jaws 113 are provided at the opening edge of the cartridge body 110, and a plurality of protrusions 284 are correspondingly provided at the outer side surface of the accommodation cartridge 280, and the jaws 113 catch the protrusions 284 to enable the installation of the accommodation cartridge 280. In the present embodiment, the outer surface of each sidewall of the accommodation box 280 is provided with two protrusions 284, the two protrusions 284 are disposed at intervals along the length or width direction of the accommodation box 280, and the two protrusions 284 are at the same height position of the accommodation box 280. Two claws 113 are correspondingly arranged on each edge of the opening of the box body 110, the two claws 113 are vertically arranged upwards, and the tail ends of the claws are used for clamping protrusions 284 on the side wall of the accommodating box 280 so as to fix the accommodating box 280.
When assembling the electrolytic oxygen removal assembly 200, the cathode plate 230, the anode plate 220, the proton exchange membrane 210, the gasket 260, the elastic plate 240, the diffusion layer 270 and other components are arranged according to the above-mentioned positional relationship to form a multi-layer structure, and then the multi-layer structure is integrally placed inside the accommodation box 280. The layer arrangement direction of the multi-layer structure coincides with the height direction of the accommodation box 280. In this embodiment, the multilayer structure inside the housing box 280 is, from top to bottom: fan 250, spring plate 240, gasket 260, anode plate 220, gasket 260, diffusion layer 270, proton exchange membrane 210, diffusion layer 270, gasket 260, cathode plate 230, gasket 260, and spring plate 240. When the electrolytic oxygen removal assembly 200 is installed, the assembled electrolytic oxygen removal assembly 200 is inserted into the opening of the box body as a whole, and when the flange of the containment box 280 abuts against the edge of the opening, the plurality of claws 113 just catch the protrusions 284 on the side wall of the containment box 280, so that the containment box 280 is fixed, and the installation of the electrolytic oxygen removal assembly 200 is completed. If the user does not need the oxygen removal function of the storage container, the storage box 280 may be entirely removed.
The storage container 100 of the present embodiment includes: electrolytic oxygen scavenging assembly 200. The electrolytic oxygen removal assembly 200 is used to consume oxygen from the air in the storage space to obtain a nitrogen-rich and oxygen-lean atmosphere in the space that is conducive to preserving food. The gas atmosphere reduces the oxygen breathing intensity of food (especially fruits and vegetables) by reducing the content of oxygen in the storage space, ensures the basic respiration effect, prevents the food from anaerobic respiration, and achieves the purpose of keeping the food fresh for a long time.
An embodiment of the present invention further provides a refrigeration and freezing apparatus, including: a box body and the storage container 100. The interior of the box body forms a storage compartment of the refrigerating and freezing device. The storage container 100 is provided inside the storage compartment.
In this embodiment, the refrigerating and freezing device may be a refrigerator, in this embodiment, an air-cooled refrigerator, in which the storage compartment is cooled by air flow circulation. The storage compartment of the refrigerator includes: a refrigerating compartment and a freezing compartment located below the refrigerating compartment. The storage container 100 may be a drawer, as shown in fig. 6 and 7, which is composed of a cylinder 111 and a drawing part 112, and the electrolytic oxygen removing assembly 200 is disposed on the top surface of the cylinder 111. The drawer is detachably arranged at the bottom of a refrigerating chamber of the refrigerator, a plurality of pairs of convex ribs are arranged at two sides of the inner container 410 of the refrigerating chamber, and the pair of convex ribs at the bottom of the refrigerating chamber are used for limiting the installation position of the drawer.
The electrolytic oxygen removal assembly 200 is placed on the upper portion of the drawer, and batteries supplying power to the anode plate 220 and the cathode plate 230 can be arranged in the foaming layer of the box body, so that the electrolytic oxygen removal assembly 200 is conveniently powered from the box body, and meanwhile, a user can conveniently install and detach the electrolytic oxygen removal assembly. Because the drawer sets up in cold-stored room bottom, electrolysis deoxidization subassembly 200 sets up and can fully contact with the indoor air in cold-stored room at the drawer top, and after near the aqueous vapor of electrolysis deoxidization subassembly was consumed, the air cycle of air-cooled refrigerator was very fast, and the aqueous vapor of other positions can be replenished fast, and it goes on fast to maintain the reaction. Thus, positioning the electrolytic oxygen removal assembly 200 on top of the drawer can improve the operating efficiency of the electrolytic oxygen removal assembly 200.
In this embodiment, when the door of the refrigeration and freezing apparatus is in a closed state, the electrolytic oxygen removal assembly 200 operates according to a preset operation mode. The preset working mode is as follows: after the electrolytic deoxygenation assembly 200 is connected to the power supply of the battery and continuously works for a first preset time, the power supply of the battery is disconnected again, the work is suspended for a second preset time, and the intermittent start-stop work of the steps is circulated. The blower 250 and electrolytic oxygen removal assembly 200 operate synchronously, that is: blower 250 is turned on during periods of continuous operation of electrolytic oxygen removal assembly 200 and turned off during periods of suspended operation of electrolytic oxygen removal assembly 200.
As shown in fig. 8, the refrigerating and freezing apparatus further includes: a door opening/closing detection device 510, a storage container opening/closing detection device 520, and a state detection device 530. Door body switching detection device 510 sets up on a door body or box, configures to when the door body is opened or is closed, produces the opening trigger signal or the closing trigger signal of a door body, and in this embodiment, door body switching detection device 510 can be for setting up the pressure sensor in door body edge, and pressure sensor judges through the pressure size that detects between a door body and the box whether the door body is opened/closed. The storage container opening/closing detection device 520 is disposed on the storage container and configured to generate an opening trigger signal and a closing trigger signal of the storage container when the storage container is opened or closed. In this embodiment, the storage container opening/closing detection device 520 is a pressure sensor disposed at the end of the drawer extension port, and the pressure sensor determines whether the door is opened or closed by detecting the pressure between the extension portion 112 and the end of the drawer cylinder 111. A condition sensing device 530 is electrically coupled to the electrolytic oxygen scavenging assembly 200 and is configured to sense an operating condition of the electrolytic oxygen scavenging assembly 200. The operating conditions of electrolytic oxygen removal assembly 200 include: an active state and an inactive state. The working state is as follows: the cell is in communication with an anode plate 220 and a cathode plate 230, and the electrolytic oxygen removal assembly 200 is in an electrolytic oxygen removal state; the non-working state is as follows: the cell is disconnected from the connection of the anode plate 220 and the cathode plate 230 and the electrolytic oxygen removal assembly 200 is in a state in which electrolysis is suspended. The state detection device 530 can determine the operating state of the electrolytic oxygen removal assembly 200 by detecting the connection state of the battery with the anode plate and the cathode plate. The door opening and closing detection device 510, the storage container opening and closing detection device 520 and the state detection device 530 are all electrically connected with the electrolytic oxygen removal assembly 200, and the electrolytic oxygen removal assembly 200 adjusts the working state thereof according to the transmission signals of the two pressure sensors.
The electrolytic oxygen removing assembly 200 is configured to separately turn off the fan 250 when the opening trigger signal of the door body is received and the electrolytic oxygen removing assembly 200 is in the working state, that is, the electrolytic oxygen removing assembly 200 performs normal electrolytic oxygen removal, but the fan 250 arranged on one side of the anode plate 220 stops running, so as to prevent noise generated by a user from affecting the user when the user uses the refrigeration and freezing device. Under the condition that the electrolytic oxygen removal assembly 200 receives the opening trigger signal of the door body and is in a non-working state, the disconnection state of the battery power supply connection and the closing state of the fan 250 are kept until the door body closing trigger signal is detected.
Upon detecting a door opening trigger signal, electrolytic oxygen scavenging assembly 200 is further configured to: when the opening trigger signal of the storage container 100 is received, the power supply connection of the battery is disconnected, and the operation is suspended. If the user opens the storage container 100, the sealed environment in the storage space is destroyed, and the electrolytic oxygen removal assembly 200 stops electrolysis to save energy. In the case where the electrolytic oxygen removal assembly 200 does not receive the opening trigger signal of the storage container 100, the operation is continued while keeping the blower 250 off.
Electrolytic oxygen removal assembly 200 is also configured to: under the condition of receiving the closing trigger signal of the storage container and the closing trigger signal of the door body, the power supply connection of the battery is switched on again, the fan 250 is started, and the storage container operates according to a preset working mode.
Electrolytic oxygen removal assembly 200 is also configured to: under the condition of receiving a closing trigger signal of the door body, the fan 250 is turned on again, and the oxygen removal assembly is controlled to operate according to a preset working mode.
Fig. 9 is a schematic diagram of a method of oxygen removal control for a refrigeration freezer in accordance with one embodiment of the present invention. The method is suitable for use in a refrigeration freezer having an electrolytic oxygen removal assembly 200, and the electrolytic oxygen removal assembly 200 has a fan 250 that supplies air to the anode plate. The control method sequentially executes the following steps:
step S902 detects a door opening trigger signal of the refrigeration and freezing apparatus.
In step S904, it is determined whether the electrolytic oxygen removal assembly 200 is in an operating state. The electrolytic oxygen removal assembly 200 is in an operating state: the cell is connected to the anode and cathode plate connections and the electrolytic oxygen removal assembly 200 is electrolyzing oxygen in the storage space. In this embodiment, whether the electrolytic oxygen removal assembly 200 is in operation can be determined by whether the connection lines between the battery and the anode and cathode plates are open.
In step S906, if the determination result in step S904 is yes, the fans 250 are individually turned off. When the door of the refrigeration and freezing device is opened, if the electrolytic oxygen removal assembly 200 is in the working state, the blower 250 is also in the opening state inevitably. The electrolytic oxygen removal assembly 200 utilizes electrolysis to remove oxygen, and the electrolysis itself generates less noise, the primary source of which is the fan 250. When detecting that the user opens the door body and the electrolytic oxygen removal assembly 200 is running, the fan 250 of the electrolytic oxygen removal assembly is separately closed, and the electrolytic oxygen removal assembly 200 continues to remove oxygen by electrolysis, so that when the user uses the refrigeration and freezing device, the noise generated by the fan 250 has an influence on the user.
And step S908, if the determination result in the step S904 is negative, maintaining the disconnection state of the battery power supply connection and the closing state of the fan 250 until detecting a door closing trigger signal. If the electrolytic oxygen removal assembly 200 is in the non-operating state, the fan 250 is also in the off state, and the non-operating state of the electrolytic oxygen removal assembly 200 and the off state of the fan 250 are simultaneously maintained until the door body is detected to be closed again.
Fig. 10 is a flowchart of a method of oxygen removal control for a refrigeration freezer in accordance with one embodiment of the present invention.
The method sequentially executes the following steps:
step S1002 detects a door opening trigger signal of the refrigeration and freezing apparatus.
In step S1004, it is determined whether or not electrolytic oxygen removal module 200 is in an operating state.
In step S1006, if the determination result in step S1004 is yes, the blower 250 is turned off alone. If the door of the refrigeration and freezing device is opened and the oxygen removal assembly is in operation, the blower 250 of the oxygen removal assembly is first turned off. To prevent the user from being affected by the noise generated from the fan 250 when the user uses the refrigerating and freezing device.
And step S1008, if the judgment result in the step S1004 is negative, keeping the disconnection state of the battery power supply connection and the closing state of the fan 250 until detecting a door closing trigger signal.
Step S1010, judging whether an opening trigger signal of the storage container is detected.
In step S1012, if the determination result in step S1010 is "yes", the power supply connection of the battery is disconnected, and the electrolytic oxygen removal module 200 is suspended. If the user further opens the container, the battery is disconnected from the cathode and anode plates, and the electrolytic oxygen removal assembly 200 stops electrolytic oxygen removal. When the user was opening storing container, storing space and external environment intercommunication, its inside gas atmosphere was destroyed, even electrolysis deoxidization subassembly 200 continues work also can't realize the deoxidization effect, at this moment, in time breaks off being connected of battery and negative plate and anode plate to the battery energy can also improve electrolysis deoxidization subassembly 200's life simultaneously.
And step S1014, whether a closing trigger signal of the storage container and a closing trigger signal of the door body are detected. After the user finishes using the storage container, the storage container and the door body can be closed in sequence, and the cold-stored refrigerating device can receive the closing trigger signal of the storage container and the closing trigger signal of the door body in sequence.
In step S1016, if the determination result in step S1014 is yes, the power supply connection of the battery is reconnected and the blower 250 is turned on. When the user is confirmed to close the door body, the electrolytic oxygen removal assembly 200 is turned on again and the blower 250 is turned on again.
And step S1018, if the determination result in the step S1010 is negative, controlling the electrolytic oxygen removal assembly 200 to continuously work while keeping the fan 250 off. If the user just opens the refrigeration and freezing device and does not open the storage container, then the electrolytic oxygen removal assembly 200 performs electrolytic oxygen removal under the condition that the fan 250 is closed, so that the fan 250 can be prevented from generating noise, and the interior of the storage space can be kept in a nitrogen-rich and oxygen-poor gas atmosphere.
And step S1020, judging whether a closing trigger signal of the door body is detected. After the user finishes using, the door body can be closed, and the cold storage and freezing device can receive a closing trigger signal of the door body.
In step S1022, if the determination result in step S1020 is yes, the blower 250 is turned on again. After confirming that the user closes the door body, the fan 250 is turned on again and keeps on working synchronously with the electrolytic oxygen removal assembly 200.
And step S1024, controlling the electrolytic oxygen removal assembly 200 to operate according to a preset working mode. And when the door body is kept in a closed state, controlling the electrolytic oxygen removal assembly 200 to intermittently work according to a set working mode. At the same time, blower 250 is turned on when electrolytic oxygen removal assembly 200 is in operation and remains off when electrolytic oxygen removal assembly 200 is not in operation. Specifically, the preset working modes of the electrolytic oxygen removal assembly 200 are as follows: after the electrolytic deoxygenation assembly 200 is connected to the power supply of the battery and continuously works for a first preset time, the power supply of the battery is disconnected and the work is suspended for a second preset time, and the steps are cycled to start and stop intermittently. The first preset time and the second preset time can be determined according to the size of the storage space and the working efficiency of the electrolytic oxygen removal assembly 200, in this embodiment, the first preset time can be set to 1 hour, and the second preset time can be set to 5 hours.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A method for controlling oxygen removal of a refrigeration and freezing device, wherein a storage container is arranged in the refrigeration and freezing device, an electrolytic oxygen removal assembly is arranged on the surface of the storage container, and the electrolytic oxygen removal assembly comprises: an anode plate, a cathode plate, a proton exchange membrane, a battery and a fan for blowing water vapor to the anode plate, wherein two poles of the battery are controllably connected with the anode plate and the cathode plate, the electrolytic oxygen removal assembly is configured to consume oxygen inside the storage container through an electrolytic reaction, and the control method comprises the following steps:
detecting a door opening trigger signal of the refrigerating and freezing device;
judging whether the electrolytic oxygen removal assembly is in a working state;
if yes, independently turning off the fan;
if not, keeping the disconnection state of the battery power supply connection and the closing state of the fan until detecting a door closing trigger signal.
2. The oxygen removal control method of claim 1, wherein the step of individually turning off the fan further comprises, after:
judging whether an opening trigger signal of the storage container is detected or not;
if so, disconnecting the power supply connection of the battery to enable the electrolytic oxygen removal assembly to pause;
if not, the electrolytic oxygen removal assembly is controlled to continuously work under the condition that the fan is kept closed.
3. The oxygen removal control method of claim 2, wherein the step of disconnecting the power supply to the battery and suspending operation of the electrolytic oxygen removal assembly further comprises, after the step of:
judging whether a closing trigger signal of the storage container and a closing trigger signal of the door body are detected or not;
if yes, the power supply connection of the battery is reconnected, the fan is started, and the electrolytic oxygen removal assembly is controlled to operate according to a preset working mode.
4. The oxygen removal control method of claim 2, wherein the step of controlling the electrolytic oxygen removal assembly to continue operating while the fan is kept off further comprises, after the step of controlling the electrolytic oxygen removal assembly to continue operating:
judging whether a closing trigger signal of the door body is detected or not;
if yes, the fan is restarted, and the oxygen removal assembly is controlled to operate according to a preset working mode.
5. The oxygen removal control method according to claim 3 or 4, wherein the preset operation mode is set to:
after the electrolytic deoxidizing component is connected with the power supply connection of the battery and continuously works for a first preset time, the power supply connection of the battery is disconnected, the work is suspended for a second preset time, and the intermittent start-stop work in the steps is circulated;
the fan is started in the time period that the electrolytic oxygen removal assembly continuously works, and is closed in the time period that the electrolytic oxygen removal assembly stops working.
6. A refrigeration chiller comprising:
a box body, wherein a storage compartment of the refrigerating and freezing device is formed inside the box body;
a door body openably and closably provided on a front side of the cabinet;
a storage container arranged in the storage room and having a storage space formed therein;
an electrolytic oxygen removal assembly removably disposed on a surface of the storage container and configured to consume oxygen within the storage container via an electrolytic reaction, the electrolytic oxygen removal assembly comprising:
an anode plate configured to electrolyze water vapor to generate hydrogen ions and oxygen;
a cathode plate configured to generate water by reacting hydrogen ions with oxygen;
a cell having two poles controllably connected to the anode plate and the cathode plate;
a proton exchange membrane sandwiched between the cathode plate and the anode plate, configured to transport hydrogen ions from the anode plate side to the cathode plate side; and
the fan is arranged on one side, back to the proton exchange membrane, of the anode plate and used for blowing water vapor outside the storage container to the anode plate;
the door body opening and closing detection device is arranged on the door body or the box body and is configured to generate an opening trigger signal or a closing trigger signal of the door body when the door body is opened or closed; and
a state detection device electrically connected with the electrolytic oxygen removal assembly and configured to detect the working state of the electrolytic oxygen removal assembly; wherein
The electrolytic oxygen removal assembly is electrically connected with the door body opening and closing detection device and is configured to independently close the fan under the condition that an opening trigger signal of the door body is received and the electrolytic oxygen removal assembly is in a working state; and under the condition that the opening trigger signal of the door body is received and the electrolytic oxygen removal assembly is in a non-working state, the disconnection state of the battery power supply connection and the closing state of the fan are kept until the closing trigger signal of the door body is detected.
7. The refrigeration freezer of claim 6, further comprising:
the opening and closing detection device for the storage container is arranged on the storage container and is configured to generate an opening trigger signal or a closing trigger signal of the storage container when the storage container is opened or closed; wherein
The electrolysis deoxidization subassembly with storing container switching detection device electricity links to each other, still configures into: under the condition of receiving an opening trigger signal of the storage container, disconnecting the power supply connection of the battery and suspending the work; and under the condition that the opening trigger signal of the storage container is not received, the fan is kept to be closed, and the fan continuously works.
8. The refrigeration chiller of claim 7, wherein the electrolytic oxygen removal assembly is further configured to:
and under the condition that the closing trigger signal of the storage container and the closing trigger signal of the door body are detected, the power supply connection of the battery is switched on again, the fan is started, and the storage container operates according to a preset working mode.
9. The refrigeration chiller of claim 7, wherein the electrolytic oxygen removal assembly is further configured to:
and under the condition that a closing trigger signal of the door body is detected, the fan is restarted and operates according to a preset working mode.
10. The refrigeration chiller of claim 8 or 9, wherein the electrolytic oxygen removal assembly is further configured to:
under the condition that the door body is kept closed, after the door body continuously works for a first preset time, the door body stops working for a second preset time, and the steps are circulated to start and stop intermittently; and controlling the fan to be started within the time period of continuous work of the electrolytic oxygen removal assembly and to be closed within the time period of pause work of the electrolytic oxygen removal assembly.
CN201711243253.1A 2017-11-30 2017-11-30 Refrigerating and freezing device and deoxygenation control method thereof Active CN109855375B (en)

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Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

Patentee after: Haier Smart Home Co., Ltd.

Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

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Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

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Patentee after: QINGDAO HAIER REFRIGERATOR Co.,Ltd.

Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China

Patentee before: Haier Smart Home Co., Ltd.