WO2021190006A1 - 保鲜装置及冰箱 - Google Patents

保鲜装置及冰箱 Download PDF

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Publication number
WO2021190006A1
WO2021190006A1 PCT/CN2020/138706 CN2020138706W WO2021190006A1 WO 2021190006 A1 WO2021190006 A1 WO 2021190006A1 CN 2020138706 W CN2020138706 W CN 2020138706W WO 2021190006 A1 WO2021190006 A1 WO 2021190006A1
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WO
WIPO (PCT)
Prior art keywords
fresh
keeping device
frame
oxygen
module
Prior art date
Application number
PCT/CN2020/138706
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English (en)
French (fr)
Inventor
任相华
任志洁
刘运斌
Original Assignee
合肥美的电冰箱有限公司
合肥华凌股份有限公司
美的集团股份有限公司
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Application filed by 合肥美的电冰箱有限公司, 合肥华凌股份有限公司, 美的集团股份有限公司 filed Critical 合肥美的电冰箱有限公司
Publication of WO2021190006A1 publication Critical patent/WO2021190006A1/zh

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Classifications

    • 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
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • 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
    • 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
    • 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
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • 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
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/024—Slidable shelves
    • F25D25/025—Drawers
    • 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

Definitions

  • the invention relates to the field of refrigeration and freezing, in particular to a fresh-keeping device and a refrigerator.
  • the existing refrigerator vacuum fresh-keeping technology uses a vacuum pump to extract air in the containing space to reduce the oxygen content and enhance the fresh-keeping effect.
  • the initial oxygen content of the gas in the normal containment space is about 20%, and the nitrogen content is about 80%. Assuming that the initial oxygen content is about 2L in a 10L space.
  • a vacuum pump is used to extract air in the containing space, oxygen and nitrogen are simultaneously pumped away.
  • 1L of oxygen is pumped away, 4L of nitrogen is pumped away at the same time.
  • the present invention aims to solve at least one of the technical problems existing in the prior art.
  • the present invention proposes a fresh-keeping device, which can form a low-oxygen negative pressure state in the storage space, and can maintain a low-oxygen negative pressure state in the space for a period of time.
  • the present invention also provides a refrigerator with the above-mentioned preservation device.
  • the fresh-keeping device is used in a refrigerator and includes: a frame provided with an accommodating space, one side of the frame is provided with an opening, and a wall of the frame is provided with ventilation holes, The vent is in communication with the containing space; the drawer can enter through the opening and be accommodated in the containing space to cooperate with the frame to form a closed containing space; the deoxygenation module is arranged on the frame At the vent hole, the oxygen in the containing space is consumed to make the containing space form a low-oxygen negative pressure state.
  • the fresh-keeping device has at least the following beneficial effects: the fresh-keeping device of the embodiment of the present invention adopts a deaeration module, so that the deaeration module is in contact with the air in the containing space, and the oxygen in the air is in contact with the deaeration module.
  • the reaction is replaced to the outside, so as to obtain a low-oxygen environment in the space.
  • the low-oxygen environment can effectively inhibit the respiration of fruits and vegetables, reduce the consumption of organic substances, and the low-oxygen environment can meet the most basic survival requirements of fruit and vegetable cells. Maintain the vitality of cells, conducive to the preservation of fruits and vegetables.
  • hypoxia can also inhibit the activity of certain enzymes, inhibit the production of ethylene, delay the ripening and senescence process, and maintain the freshness of the fruit for a long time.
  • the deoxygenation module will only react with oxygen. , The nitrogen will not be consumed and transferred. Since the initial oxygen content of the gas in the containing space is about 20%, and the nitrogen content is about 80%, assuming that the initial oxygen is about 2L in a 10L space, when 1L of oxygen is consumed, there will be 1L of oxygen and remaining in the space.
  • the fresh-keeping device of the embodiment of the present invention has low structural strength requirements, and there is no need to adopt a strengthened design for the overall structure of the fresh-keeping device, thereby reducing material costs and reducing Volume loss; and, when the oxygen in the containing space is gradually consumed, due to the relative sealing in the containing space, the speed of external air penetration into the containing space can be slowed down, so that the containing space can maintain a low oxygen and negative pressure state for a period of time ; Moreover, compared to the fresh-keeping device that uses a vacuum pump to extract air from the containing space and reduce the oxygen content, the fresh-keeping device of the embodiment of the present invention discards the use of a vacuum pump, and has the characteristics of low noise. Therefore, the fresh-keeping device of the embodiment of the present invention Mute.
  • the oxygen removal module is an electrochemical oxygen removal module, and the electrochemical oxygen removal module is configured to consume oxygen in the receiving space through an electrolysis reaction, so that the receiving space Form a state of low oxygen and negative pressure.
  • a pressure relief valve is provided on the drawer.
  • the frame includes: an inner frame, the receiving space is provided in the inner frame, the opening is provided on one side of the inner frame, and the ventilation hole is provided in the inner frame.
  • the frame is away from the side wall of the opening; the outer frame is arranged on the inner frame, and the oxygen removal module is arranged between the inner frame and the outer frame.
  • the deoxygenation module is detachably arranged on the inner frame through a fixing structure.
  • the fixing structure includes: a connecting column arranged on the side wall of the inner frame, and a connecting hole is arranged in the connecting column; Position, the connecting column penetrates the stepped hole; the fixed connecting piece passes through the stepped hole and is threadedly connected with the connecting hole.
  • a sealing strip is provided between the opening and the drawer to ensure the tightness between the opening and the drawer.
  • the electrochemical oxygen removal module is provided with a water addition hole.
  • a plurality of the ventilation holes are provided, and the plurality of ventilation holes are arranged in an array on the side wall of the frame.
  • the refrigerator according to the embodiment of the second aspect of the present invention includes the fresh-keeping device of any one of the embodiments of the first aspect of the present invention.
  • the refrigerator provided by the present invention includes the fresh-keeping device according to any one of the above-mentioned embodiments, and therefore, has the fresh-keeping device according to any one of the above-mentioned embodiments All the beneficial effects of, I will not list them one by one here.
  • Fig. 1 is a three-dimensional exploded schematic diagram of a fresh-keeping device according to an embodiment of the present invention
  • FIG. 2 is a three-dimensional exploded schematic diagram of another view direction of the fresh-keeping device according to the embodiment of the present invention after the outer frame is removed;
  • Figure 3 is a cross-sectional view of the fresh-keeping device according to an embodiment of the present invention.
  • FIG. 4 is a rear view of the deaeration module of the fresh-keeping device according to the embodiment of the present invention.
  • FIG. 5 is a three-dimensional schematic diagram of the deoxygenation module of the fresh-keeping device according to an embodiment of the present invention.
  • Fig. 6 is a schematic diagram of a refrigerator according to an embodiment of the present invention.
  • Fresh-keeping device 200 frame 210, inner frame 211, outer frame 212, accommodating space 213, opening 214, ventilation hole 215;
  • Deaerator module 300 water filling hole 310, exhaust hole 320;
  • orientation description involved such as up, down, front, back, left, right, etc. indicates the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, but In order to facilitate the description of the present invention and simplify the description, it does not indicate or imply that the device or element referred to must have a specific orientation, be configured and operate in a specific orientation, and therefore cannot be understood as a limitation to the present invention.
  • the fresh-keeping device 200 of the embodiment of the present invention is used in a refrigerator 100.
  • the refrigerator 100 can refer to a broad sense of refrigeration storage equipment, such as refrigerators, electric freezers, refrigerating cabinets, and so on.
  • the fresh-keeping device 200 includes a frame 210, a drawer 220, and a deaeration module 300.
  • the frame 210 is provided with an accommodation space 213, an opening 214 is provided on one side of the frame 210, and a vent 215 is provided on the wall of the frame 210. 215 communicates with the accommodating space 213.
  • the drawer 220 can enter and be accommodated in the accommodating space 213 through the opening 214, so that the drawer 220 and the frame 210 cooperate to form a closed accommodating space for storing fruits and vegetables and other food materials.
  • the oxygen in the containing space can enter the deaerator module through the vent hole, and the deaerator module consumes the oxygen in the containing space and reduces the oxygen content in the containing space, thereby forming a low oxygen negative pressure environment in the containing space.
  • the fresh-keeping device 200 of the embodiment of the present invention adopts the deaeration module 300 to make the deaeration module 300 contact the air in the containing space 213, and the oxygen in the air reacts with the deaeration module 300 and is replaced to the outside.
  • a low-oxygen environment is obtained in the containment space.
  • the low-oxygen environment can effectively inhibit the respiration of fruits and vegetables and reduce the consumption of organic substances.
  • the low-oxygen environment can meet the most basic survival requirements of fruit and vegetable cells, maintain cell vitality, and facilitate the preservation of fruits and vegetables. It can also effectively inhibit the breeding and reproduction of aerobic bacteria and anaerobic bacteria, and prevent microbial spoilage of fruits and vegetables.
  • hypoxia can also inhibit the activity of certain enzymes, inhibit the production of ethylene, delay the ripening and senescence process, and maintain the freshness of the fruit for a long time.
  • the deoxygenation module will only react with oxygen. , The nitrogen will not be consumed and transferred. Since the initial oxygen content of the gas in the containing space is about 20%, and the nitrogen content is about 80%, assuming that the initial oxygen is about 2L in a 10L space, when 1L of oxygen is consumed, there will be 1L of oxygen and remaining in the space. With 8L nitrogen, the negative pressure formed in the containing space is relatively small, about -0.1 bar.
  • the fresh-keeping device of the embodiment of the present invention Compared with the method of using a vacuum pump to remove oxygen, the negative pressure value of the containing space of the fresh-keeping device of the embodiment of the present invention that achieves the same oxygen content is small. Therefore, the fresh-keeping device of the embodiment of the present invention has low structural strength requirements, and there is no need to adopt a strengthened design for the overall structure of the fresh-keeping device, thereby reducing material costs and reducing volume loss; and, when the oxygen in the containing space is gradually consumed, due to The accommodation space is relatively sealed, which can slow down the penetration of external air into the accommodation space, thereby maintaining a low-oxygen and negative pressure state in the accommodation space for a period of time; and, compared to the use of a vacuum pump to extract the air in the accommodation space, reduce the oxygen content and keep fresh In terms of the device, the fresh-keeping device of the embodiment of the present invention abandons the use of a vacuum pump and has the characteristic of low noise. Therefore, the fresh-keeping device of the embodiment of the present invention is more silent
  • the oxygen removal module 300 is an electrochemical oxygen removal module, and the electrochemical oxygen removal module is configured to consume oxygen in the containing space through an electrolysis reaction, so that a low oxygen negative pressure state is formed in the containing space 213.
  • a cathode electrode and an anode electrode are arranged inside the oxygen removal module 300.
  • the cathode electrode is in contact with the air through a waterproof and breathable membrane.
  • the working principle of the oxygen removal module is that oxygen in the air penetrates through the waterproof and breathable membrane.
  • the nitrogen in the air is blocked by the waterproof and breathable membrane outside the electrolyte tank, and electrochemically reacts with the water under the action of the cathode to generate hydroxide ions, and at the same time, an electrochemical reaction occurs at the anode.
  • the root ions react to generate water and oxygen, thereby replacing the oxygen in the air, and exhausting the oxygen removal module 300 through the vent hole, thereby reducing the oxygen content inside the drawer, thereby achieving freshness preservation.
  • the initial oxygen content of the gas in the containing space is about 20%, and the nitrogen content is about 80%.
  • the initial oxygen content of the gas in the containing space is about 20%, and the nitrogen content is about 80%.
  • about 2L when 1L of oxygen is consumed, 1L of oxygen and 8L of nitrogen are left in the space.
  • the negative pressure formed in the containing space is small, about -0.1bar, which requires low structural strength and does not require the overall structure of the preservation device.
  • the use of enhanced design reduces material costs and volume loss; and the use of electrochemical oxygen removal modules to achieve the purpose of reducing oxygen content and enhancing the preservation effect, as the electrochemical oxygen removal modules produce no noise, so the use of this
  • the fresh-keeping device of the deaeration module 300 is quieter.
  • the deoxygenation module 300 can also use an oxygen adsorption device, etc., and the remaining gas after adsorbing oxygen returns to the containing space. It can also form a low oxygen environment while the nitrogen is not consumed and transferred, and forms in the containing space.
  • the negative pressure is small, the structural strength is low, and there is no need to adopt a strengthened design for the overall structure of the fresh-keeping device, thereby reducing material costs and reducing volume loss.
  • the electrochemical oxygen removal module is provided with a water addition hole 310 and an exhaust hole 320. Because the electrochemical oxygen removal module is in operation, the oxygen gas discharged from the exhaust hole 320 is Part of the water will be taken away, resulting in the gradual decrease of the electrolyte in the electrolyte tank of the electrochemical deaeration module, which will affect the normal operation of the deaeration module, and the customer needs to replenish the water regularly.
  • the electrolyte tank can be filled with water through the water addition hole 310, so that the liquid level in the electrolyte tank can be maintained Within the normal range.
  • the frame 210 includes an inner frame 211 and an outer frame 212, wherein the accommodating space 213 is provided in the inner frame 211, the opening 214 is provided on one side of the inner frame 211, and the ventilation hole 215
  • the inner frame 211 is arranged away from the side wall of the opening 214; the outer frame 212 is arranged on the inner frame 211, and the oxygen removal module 300 is arranged between the inner frame 211 and the outer frame 212, so that the freshness keeping device 200 has a compact structure and improves the freshness keeping device. 200 effective use of space.
  • the deaeration module 300 is detachably installed on the inner frame 211 through the fixing structure 400 to facilitate the maintenance of the deaeration module 300 and the fresh-keeping device 200.
  • the fixing structure 400 includes a connecting column 410, a stepped hole 420, and a fixing connecting piece (not shown in the figure).
  • the connecting column 410 is arranged on the side wall of the inner frame 211.
  • the connecting column 410 may be integrally formed with the inner frame 211, or may be separately arranged from the inner frame 211. When arranged separately from the inner frame 211, it is connected
  • the column 410 is fixed on the inner frame by fixing parts such as screws, bolts, etc., a connecting hole 411 is provided in the connecting column 410;
  • the stepped hole 420 is provided at the corresponding position of the deaerator module 300, and the stepped hole 420 includes large holes 421 with different diameters. Connecting with the small hole 422, the large hole 421 and the small hole 422, the connecting post 410 can be arranged in the large hole 421;
  • the fixed connection piece may be a screw, bolt or other connection piece.
  • a guide surface 423 is provided at the end of the stepped hole 420 to facilitate the insertion of the connecting post 410 into the corresponding stepped hole 420.
  • the deaerator module 300 is detachably installed on the inner frame 211 through the above-mentioned fixing structure 400, thereby improving the reliability of the connection between the deaerator module 300 and the inner frame 211, and the assembly is simple, efficient, convenient, and small. It is difficult to assemble and improve the efficiency of assembly.
  • the fixing structure can also directly adopt a structure in which screws or bolts cooperate with the threaded holes, which will not be described in detail here.
  • a sealing strip 221 is provided between the opening 214 and the drawer 220 to ensure the sealing between the opening 214 and the drawer 220, and the sealing strip 221 can be provided on the inner frame 211
  • the contour shape of the inner side of the end cover of the drawer 220 is compatible with the shape of the sealing strip 221.
  • the sealing strip 221 can be modified polyvinyl chloride (PVC), vulcanized ethylene propylene diene rubber (EPDM) and thermoplastic ethylene propylene diene propylene rubber (EPDM/PP) rubber strip; the sealing strip 221 can also be set inside the end cover of the drawer 220 to facilitate the sealing between the opening 214 and the drawer 220.
  • PVC polyvinyl chloride
  • EPDM vulcanized ethylene propylene diene rubber
  • EPDM/PP thermoplastic ethylene propylene diene propylene rubber
  • a pressure relief valve (Not shown in the figure), when it is necessary to open the fresh-keeping device 200, first open the pressure relief valve to balance the air pressure in the fresh-keeping device 200 with the atmospheric pressure, thereby eliminating the negative pressure state of the containing space 213, so as to apply a smaller force That is, the purpose of the fresh-keeping device 200 can be opened; and when the pressure relief valve is opened, the sound of gas leakage can be heard, which improves the user experience.
  • multiple ventilation holes 215 are provided, and the multiple ventilation holes 215 are arranged in an array on the side wall of the frame 210.
  • the provision of multiple ventilation holes 215 can increase the storage space 213 and The oxygen transfer area between the deoxidizing modules 300 improves the deoxidizing efficiency of the deoxidizing modules 300.
  • FIG. 6 is a refrigerator 100 according to an embodiment of the second aspect of the present invention, including the fresh-keeping device 200 provided in any one of the above embodiments.
  • the fresh-keeping device 200 makes the deaeration module 300 contact the air in the containing space 213, and the oxygen in the air reacts with the deaeration module 300 and is replaced to the outside, thereby obtaining a low-oxygen environment in the space. It can effectively inhibit the respiration of fruits and vegetables, reduce the consumption of organic matter, and the low-oxygen environment can meet the most basic survival requirements of fruit and vegetable cells, can maintain the vitality of the cells, and is conducive to the preservation of fruits and vegetables.
  • hypoxia can also inhibit the activity of certain enzymes, inhibit the production of ethylene, delay the ripening and senescence process, and maintain the freshness of the fruit for a long time.
  • the deoxygenation module will only react with oxygen. , The nitrogen will not be consumed and transferred. Since the initial oxygen content of the gas in the containing space is about 20%, and the nitrogen content is about 80%, assuming that the initial oxygen is about 2L in a 10L space, when 1L of oxygen is consumed, there will be 1L of oxygen and remaining in the space.
  • the negative pressure formed in the containing space is relatively small, about -0.1 bar.
  • the negative pressure value of the containing space of the fresh-keeping device of the embodiment of the present invention that achieves the same oxygen content is small.
  • the fresh-keeping device of the embodiment of the present invention has low structural strength requirements, and there is no need to adopt a strengthened design for the overall structure of the fresh-keeping device, thereby reducing material costs and reducing volume loss; and, when the oxygen in the containing space is gradually consumed, due to The accommodation space is relatively sealed, which can slow down the penetration of external air into the accommodation space, thereby maintaining a low oxygen and negative pressure state in the accommodation space for a period of time; and, compared to using a vacuum pump to extract the air in the accommodation space, reduce the oxygen content and keep fresh
  • the fresh-keeping device of the embodiment of the present invention abandons the use of a vacuum pump and has the characteristic of low noise. Therefore, the fresh-keeping device of the embodiment of the present invention is more silent.

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  • Chemical & Material Sciences (AREA)
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Abstract

一种保鲜装置及冰箱。保鲜装置(200)包括：框架(210)，设置有容纳空间(213)，所述框架(210)的一侧设置有开口(214)，所述框架(210)的壁上设有透气孔(215)，所述透气孔(215)与所述容纳空间(213)连通；抽屉(220)，能通过所述开口(214)进入并收容于所述容纳空间(213)中，以与所述框架(210)配合形成密闭的收容空间(213)；除氧模组(300)，设置于所述框架(210)的所述透气孔(215)处，以消耗所述收容空间(213)内部的氧气，使所述收容空间(213)形成低氧负压状态。

Description

保鲜装置及冰箱
相关申请的交叉引用
本申请要求于2020年3月24日提交的申请号为202010211428.6、名称为“保鲜装置及冰箱”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及冷藏冷冻领域，特别涉及一种保鲜装置及冰箱。
背景技术
现有冰箱真空保鲜技术，采用真空泵抽取容纳空间内的空气，减少氧气含量，增强保鲜效果。众所周知，正常容纳空间内气体初始氧气含量约20％，氮气含量约80％，假设10L的空间内，初始氧气约2L。采用真空泵抽取容纳空间内的空气时，是把氧气和氮气同时抽走，当抽走1L氧气时，同时抽走了4L的氮气，此时空间内剩余1L氧气和4L氮气，形成较大负压，约-0.5bar；由于内外压差大，为防止抽屉框架变形，整体结构需要采用加强设计，如需要加厚、加强材料及增加加强筋设计等，造成材料和容积的损耗大.
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种保鲜装置，该保鲜装置可以使存储空间内形成低氧负压状态，并可以使空间内保持一段时间的低氧负压状态。
本发明还提出一种具有上述保鲜装置的冰箱.
根据本发明的第一方面实施例的保鲜装置，用于冰箱，包括：框架，所述框架设置有容纳空间，所述框架的一侧设置有开口，所述框架的壁上设有透气孔，所述透气孔与所述容纳空间连通；抽屉，能通过所述开口进入并收 容于所述容纳空间中，以与所述框架配合形成密闭的收容空间；除氧模组，设置于所述框架的所述透气孔处，以消耗所述收容空间内部的氧气，使所述收容空间形成低氧负压状态。
根据本发明实施例的保鲜装置，至少具有如下有益效果：本发明实施例的保鲜装置采用除氧模组，使除氧模组与容纳空间内的空气接触，空气中的氧气与除氧模组反应，被置换到外部，从而在该空间内获得低氧环境，该低氧环境能有效抑制水果蔬菜呼吸作用，减少有机物质的消耗，并且低氧环境能满足果蔬细胞最基本的生存要求，能维持细胞生命力，利于果蔬保鲜。还可以有效抑制好氧细菌和厌氧细菌滋生繁殖，防止微生物腐败果蔬。另外，低氧也能抑制某些酶的活性，抑制乙烯产生，延缓后熟和衰老过程，长期保持果实的营养新鲜；而且，在形成低氧环境的同时，除氧模组只会和氧气反应，氮气不会被消耗转移，由于容纳空间内气体初始氧气含量约20％，氮气含量约80％，假设10L的空间内，初始氧气约2L，当氧气消耗掉1L时，空间内剩余1L氧气和8L氮气，容纳空间内形成的负压较小，约-0.1bar，因此本发明实施例的保鲜装置对结构强度要求较低，无须对保鲜装置的整体结构采用加强设计，从而降低材料成本，减少容积的损耗；并且，当容纳空间内氧气被逐渐消耗掉时，由于容纳空间内相对密封，可减缓外部空气渗透进容纳空间内的速度，从而使容纳空间内保持一段时间的低氧负压状态；而且，相对于采用真空泵抽取容纳空间内的空气、减少氧气含量的保鲜装置而言，本发明实施例的保鲜装置摈弃了真空泵的使用，具有噪音小的特点，因此本发明实施例的保鲜装置更加静音。
根据本发明的一些实施例，所述除氧模组为电化学除氧模组，所述电化学除氧模组设置成通过电解反应消耗所述收容空间内部的氧气，以使所述收容空间内形成低氧负压状态。
根据本发明的一些实施例，所述抽屉上设置有泄压阀。
根据本发明的一些实施例，所述框架包括：内框架，所述容纳空间设置 在所述内框架内，所述开口设置在所述内框架的一侧，所述透气孔设置在所述内框架远离所述开口的侧壁；外框架，设置在内框架上，所述除氧模组设置在所述内框架和所述外框架之间。
根据本发明的一些实施例，所述除氧模组通过固定结构可拆卸地设置在所述内框架上。
根据本发明的一些实施例，所述固定结构包括：连接柱，设置在所述内框架的侧壁，所述连接柱内设置有连接孔；阶梯孔，设置在所述除氧模组的对应位置，所述连接柱穿设于所述阶梯孔；固定连接件，穿过所述阶梯孔并与所述连接孔螺纹连接。
根据本发明的一些实施例，所述开口与所述抽屉之间设置有密封条，以保证所述开口与所述抽屉之间的密封性。
根据本发明的一些实施例，所述电化学除氧模组上设置有加水孔。
根据本发明的一些实施例，所述透气孔设置有多个，多个所述透气孔呈阵列设置在所述框架的所述侧壁。
根据本发明的第二方面实施例的冰箱，包括本发明上述第一方面任一实施例的保鲜装置。
根据本发明实施例的，至少具有如下有益效果：本发明提出的冰箱，包括有上述实施例中任一项所述的保鲜装置，因此，具有如上述实施例中任一项所述的保鲜装置的全部有益效果，在此不再一一例举.
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1为本发明实施例的保鲜装置的立体爆炸示意图；
图2为本发明实施例的保鲜装置去除外框架后的另一视向的立体爆炸示意图；
图3为本发明实施例的保鲜装置的剖视图；
图4为本发明实施例的保鲜装置去除除氧模组的后视图；
图5为本发明实施例的保鲜装置的除氧模组的立体示意图；
图6为本发明实施例的冰箱的示意图。
附图标记：
冰箱100；
保鲜装置200、框架210、内框架211、外框架212、容纳空间213、开口214、透气孔215；
抽屉220、密封条221
除氧模组300、加水孔310、排气孔320；
固定结构400、连接柱410、连接孔411、阶梯孔420、大孔421、小孔422、引导面423。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，涉及到方位描述，例如上、下、前、后、左、右等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，如果有描述到第一、第二只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征 的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中，除非另有明确的限定，设置、安装、连接等词语应做广义理解，所属技术领域技术人员可以结合技术方案的具体内容合理确定上述词语在本发明中的具体含义。
如图1、图2、图3所示，本发明实施例的保鲜装置200，用于冰箱100，冰箱100可以指的是广义的制冷存储设备，例如电冰箱、电冰柜、冷藏柜等等。保鲜装置200包括框架210、抽屉220和除氧模组300，其中，框架210设置有容纳空间213，在框架210的一侧设置有开口214，框架210的壁上设有透气孔215，透气孔215与容纳空间213连通，抽屉220能通过开口214进入并收容于容纳空间213中，从而使抽屉220与框架210配合形成密闭的收容空间，以存储果蔬等食材，除氧模组设置于框架的透气孔处，容纳空间的氧气可通过透气孔进入除氧模组，通过除氧模组以消耗收容空间内部的氧气，降低收容空间内的氧含量，从而使收容空间形成低氧负压环境。
本发明实施例的保鲜装置200采用除氧模组300，使除氧模组300与容纳空间213内的空气接触，空气中的氧气与除氧模组300反应，被置换到外部，从而在该收容空间内获得低氧环境，该低氧环境能有效抑制水果蔬菜呼吸作用，减少有机物质的消耗，并且低氧环境能满足果蔬细胞最基本的生存要求，能维持细胞生命力，利于果蔬保鲜。还可以有效抑制好氧细菌和厌氧细菌滋生繁殖，防止微生物腐败果蔬。另外，低氧也能抑制某些酶的活性，抑制乙烯产生，延缓后熟和衰老过程，长期保持果实的营养新鲜；而且，在形成低氧环境的同时，除氧模组只会和氧气反应，氮气不会被消耗转移，由于容纳空间内气体初始氧气含量约20％，氮气含量约80％，假设10L的空间内，初始氧气约2L，当氧气消耗掉1L时，空间内剩余1L氧气和8L氮气，容纳空间内形成的负压较小，约-0.1bar，相对于采用真空泵除氧的方式而言，达到同样氧含量的本发明实施例的保鲜装置的容纳空间负压值较小，因此本发明实施 例的保鲜装置对结构强度要求较低，无须对保鲜装置的整体结构采用加强设计，从而降低材料成本，减少容积的损耗；并且，当容纳空间内氧气被逐渐消耗掉时，由于容纳空间内相对密封，可减缓外部空气渗透进容纳空间内的速度，从而使容纳空间内保持一段时间的低氧负压状态；并且，相对于采用真空泵抽取容纳空间内的空气、减少氧气含量保鲜装置而言，本发明实施例的保鲜装置摒弃了真空泵的使用，具有噪音小的特点，因此本发明实施例的保鲜装置更加静音。
在一些实施例中，除氧模组300为电化学除氧模组，电化学除氧模组设置成通过电解反应消耗收容空间内部的氧气，以使容纳空间213内形成低氧负压状态。
在除氧模组300内部设有阴极电极和阳极电极(图中未示出)，阴极电极通过防水透气膜与空气接触，除氧模组的工作原理是：空气中的氧气通过防水透气膜渗透进入电解液箱，同时空气中的氮气被防水透气膜阻挡在电解液箱外，并在阴极作用下与水产生电化学反应，生成氢氧根离子，同时，在阳极产生电化学反应，氢氧根离子反应生成水和氧气，从而将空气的中的氧气置换出来，并通过排气孔排出除氧模组300外面，从而使抽屉内部氧气含量降低，进而达到保鲜作用。
使用电化学除氧模组时，由于模组只会和氧气反应，氮气不会被消耗转移，容纳空间内气体初始氧气含量约20％，氮气含量约80％，假设10L的空间内，初始氧气约2L，当氧气消耗掉1L时，空间内剩余1L氧气和8L氮气，此时容纳空间内形成的负压较小，约-0.1bar，对结构强度要求较低，无须对保鲜装置的整体结构采用加强设计，从而降低材料成本，减少容积的损耗；并且采用电化学除氧模组在实现降低氧气含量、增强保鲜效果的目的的同时，由于电 化学除氧模组无噪音产生，使采用该除氧模组300的保鲜装置更加静音。
可以理解的是，除氧模组300还可采用氧气吸附装置等，吸附氧气后剩余的气体返回容纳空间内，同样可在形成低氧环境的同时，氮气不会被消耗转移，容纳空间内形成的负压较小，对结构强度要求较低，无须对保鲜装置的整体结构采用加强设计，从而降低材料成本，减少容积的损耗。
参照图2、图5，在一些实施例中，电化学除氧模组上设置有加水孔310和排气孔320，由于电化学除氧模组在工作过程中，排气孔320排出的氧气会带走部分水分，导致电化学除氧模组电解液箱内电解液的水分逐渐减少，影响除氧模组的正常工作，需要客户自行定期补充水分。通过在电化学除氧模组上设置加水孔310，在电解液箱内的液面达到预定低的位置时，可通过加水孔310向电解液箱补水，从而使电解液箱内的液位维持在正常范围内。
参照图1、图2，在一些实施例中，框架210包括内框架211和外框架212，其中，容纳空间213设置在内框架211内，开口214设置在内框架211的一侧，透气孔215设置在内框架211远离开口214的侧壁；外框架212设置在内框架211上，除氧模组300设置在内框架211和外框架212之间，从而使保鲜装置200结构紧凑，提升保鲜装置200的有效利用空间。
在一些实施例中，除氧模组300通过固定结构400可拆卸地设置在内框架211上，以便于除氧模组300和保鲜装置200的维护。
参照图1、图2，在一些实施例中，固定结构400包括连接柱410、阶梯孔420和固定连接件(图中未示出)。
如图所示，连接柱410设置在内框架211的侧壁，连接柱410可以是与内框架211一体成型，也可以是与内框架211分体设置，与内框架211分体设置时，连接柱410通过固定件如螺钉、螺栓等固定在内框架上，连接柱410 内设置有连接孔411；阶梯孔420设置在除氧模组300的对应位置，阶梯孔420包括不同孔径的大孔421和小孔422，大孔421和小孔422连通，连接柱410能够设置于大孔421；固定连接件穿过小孔422并与连接孔411螺纹连接。
可以预见的是，固定连接件可以是螺钉、螺栓等连接件。
如图所示，在阶梯孔420的端部设置有引导面423，以方便连接柱410插入对应的阶梯孔420内。
除氧模组300通过上述的固定结构400可拆卸地设置在内框架211上，从而提高了除氧模组300与内框架211之间的连接可靠性，并且装配简单、高效、方便，减小装配难度，提高装配效率。
可以理解的是，固定结构还可直接采用螺钉或螺栓与螺纹孔配合的结构，在此不作详述。
如图1、图2所示，在一些实施例中，开口214与抽屉220之间设置有密封条221，以保证开口214与抽屉220之间的密封性，密封条221可以设置在内框架211上，抽屉220的端盖内侧的轮廓形状同密封条221的形状相适应，密封条221可以采用改性聚氯乙烯(PVC)，硫化三元乙丙橡胶(EPDM)和热塑性三元乙丙橡胶(EPDM/PP)胶条；密封条221也可设置抽屉220的端盖内侧，以方便开口214与抽屉220之间的密封，通过加强密封，减小外部空气泄露到空间内的速度，也可以在打开抽屉时实现真空的可感知体验效果。
由于保鲜装置200在使用过程中容纳空间213内会形成微负压，从而导致开启保鲜装置200时需施加较大的力，因此，在一些实施例中，在抽屉220上设置有泄压阀(图中未示出)，在需要开启保鲜装置200时，先打开泄压阀，以使保鲜装置200内的气压与大气压平衡，从而消除容纳空间213的负压状态，以达到施加较小的力即可开启保鲜装置200的目的；并且，当泄压 阀打开时，可以听到气体泄露的声音，提升用户体验。
如图2、图4所示，在一些实施例中，透气孔215设置有多个，多个透气孔215呈阵列设置在框架210的侧壁，设置多个透气孔215可提高容纳空间213与除氧模组300之间的氧气转移的面积，提高除氧模组300的除氧效率。
参照图6，图6是本发明的第二方面实施例的冰箱100，包括有上述实施例中任一项实施例提供的保鲜装置200，由于本发明实施例的冰箱100采用了上述实施例的保鲜装置200，使除氧模组300与容纳空间213内的空气接触，空气中的氧气与除氧模组300反应，被置换到外部，从而在该空间内获得低氧环境，该低氧环境能有效抑制水果蔬菜呼吸作用，减少有机物质的消耗，并且低氧环境能满足果蔬细胞最基本的生存要求，能维持细胞生命力，利于果蔬保鲜。还可以有效抑制好氧细菌和厌氧细菌滋生繁殖，防止微生物腐败果蔬。另外，低氧也能抑制某些酶的活性，抑制乙烯产生，延缓后熟和衰老过程，长期保持果实的营养新鲜；而且，在形成低氧环境的同时，除氧模组只会和氧气反应，氮气不会被消耗转移，由于容纳空间内气体初始氧气含量约20％，氮气含量约80％，假设10L的空间内，初始氧气约2L，当氧气消耗掉1L时，空间内剩余1L氧气和8L氮气，容纳空间内形成的负压较小，约-0.1bar，相对于采用真空泵除氧的方式而言，达到同样氧含量的本发明实施例的保鲜装置的容纳空间负压值较小，因此本发明实施例的保鲜装置对结构强度要求较低，无须对保鲜装置的整体结构采用加强设计，从而降低材料成本，减少容积的损耗；并且，当容纳空间内氧气被逐渐消耗掉时，由于容纳空间内相对密封，可减缓外部空气渗透进容纳空间内的速度，从而使容纳空间内保持一段时间的低氧负压状态；并且，相对于采用真空泵抽取容纳空间内的空气、 减少氧气含量保鲜装置而言，本发明实施例的保鲜装置摒弃了真空泵的使用，具有噪音小的特点，因此本发明实施例的保鲜装置更加静音。
当然，本发明创造并不局限于上述实施方式，熟悉本领域的技术人员在不违背本发明精神的前提下还可作出等同变形或替换，这些等同的变型或替换均包含在本申请权利要求所限定的范围内。

Claims (10)

  1. 一种保鲜装置，用于冰箱，包括：
    框架，设置有容纳空间，所述框架的一侧设置有开口，所述框架的壁上设有透气孔，所述透气孔与所述容纳空间连通；
    抽屉，能通过所述开口进入并收容于所述容纳空间中，以与所述框架配合形成密闭的收容空间；
    除氧模组，设置于所述框架的所述透气孔处，以消耗所述收容空间内部的氧气，使所述收容空间形成低氧负压状态。
  2. 根据权利要求1所述的保鲜装置，其中，所述除氧模组为电化学除氧模组，所述电化学除氧模组设置成通过电解反应消耗所述收容空间内部的氧气，以使所述收容空间内形成低氧负压状态。
  3. 根据权利要求1或2所述的保鲜装置，其中，所述抽屉上设置有泄压阀。
  4. 根据权利要求1或2所述的保鲜装置，其中，所述框架包括：
    内框架，所述容纳空间设置在所述内框架内，所述开口设置在所述内框架的一侧，所述透气孔设置在所述内框架远离所述开口的侧壁；
    外框架，设置在内框架上，所述除氧模组设置在所述内框架和所述外框架之间。
  5. 根据权利要求4所述的保鲜装置，其中，所述除氧模组通过固定结构可拆卸地设置在所述内框架上。
  6. 根据权利要求5所述的保鲜装置，其中，所述固定结构包括：
    连接柱，设置在所述内框架的侧壁，所述连接柱内设置有连接孔；
    阶梯孔，设置在所述除氧模组的对应位置，所述连接柱穿设于所述阶梯孔；
    固定连接件，穿过所述阶梯孔并与所述连接孔螺纹连接。
  7. 根据权利要求1所述的保鲜装置，其中，所述开口与所述抽屉之间设置有密封条，以保证所述开口与所述抽屉之间的密封性。
  8. 根据权利要求2所述的保鲜装置，其中，所述电化学除氧模组上设置有加水孔。
  9. 根据权利要求1所述的保鲜装置，其中，所述透气孔设置有多个，多个所述透气孔呈阵列设置在所述框架的所述侧壁。
  10. 一种冰箱，包括权利要求1至9中任一项所述的保鲜装置。
PCT/CN2020/138706 2020-03-24 2020-12-23 保鲜装置及冰箱 WO2021190006A1 (zh)

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