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WO2021190013A1 - 保鲜装置及冰箱 - Google Patents

保鲜装置及冰箱 Download PDF

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Publication number
WO2021190013A1
WO2021190013A1 PCT/CN2020/139115 CN2020139115W WO2021190013A1 WO 2021190013 A1 WO2021190013 A1 WO 2021190013A1 CN 2020139115 W CN2020139115 W CN 2020139115W WO 2021190013 A1 WO2021190013 A1 WO 2021190013A1
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WO
WIPO (PCT)
Prior art keywords
fresh
refrigerating
air duct
keeping
refrigeration
Prior art date
Application number
PCT/CN2020/139115
Other languages
English (en)
French (fr)
Inventor
任相华
刘运斌
任志洁
邵啟鹏
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
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 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 WO2021190013A1 publication Critical patent/WO2021190013A1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts

Definitions

  • the invention belongs to the field of refrigeration storage equipment, and more specifically, relates to a fresh-keeping device and a refrigerator.
  • refrigerators In the field of modified atmosphere preservation, in order to control the gas composition within a certain range, refrigerators need to provide a confined space for preservation.
  • the internal air of the confined space cannot circulate with the external air, and the external cold source cannot enter the confined space to effectively control the convection temperature of the confined space, so that the temperature of the confined space is too high to achieve the best effect of food storage.
  • the present invention aims to at least partially solve one of the above-mentioned technical problems. For this reason, the present invention proposes a fresh-keeping device, which effectively quickly cools the air-cooled refrigerator confined space and prolongs the food fresh-keeping cycle.
  • the present invention also provides a refrigerator with the above-mentioned preservation device.
  • the fresh-keeping device used in a refrigerator, includes: a fresh-keeping box body provided with an accommodating space and provided with an opening communicating with the accommodating space; and a refrigeration housing disposed on the fresh-keeping box body On the outside, the refrigeration housing is provided with a refrigeration air duct, the refrigeration air duct is used to cool the accommodating space, the refrigeration housing is provided with a first insulation layer; the drawer can enter and accommodate through the opening In the accommodating space, a closed accommodating space is formed in cooperation with the fresh-keeping box body.
  • the fresh-keeping device has at least the following beneficial effects: the refrigerating shell is arranged on the outside of the fresh-keeping box, and cold air can cool the accommodating space of the fresh-keeping box through the refrigerating air duct in the refrigerating shell, so as to realize the improvement of the accommodating space.
  • Temperature control can adjust the temperature of the containing space according to the appropriate storage temperature of different food materials without affecting the low-oxygen control function, and extend the storage period of food.
  • the fresh-keeping device further includes a heat-preserving housing, an installation space for accommodating the fresh-keeping box is formed between the heat-preserving housing and the refrigeration housing, and the heat-preserving housing is provided with The second insulation layer.
  • the fresh-keeping box body includes a heat exchange surface for heat transfer with the refrigerating air duct, and at least a part of the heat exchange surface is made of a metal material.
  • the fresh-keeping box body includes a heat exchange surface for heat transfer with the refrigerating air duct, and the heat exchange surface is corrugated.
  • the fresh-keeping box body includes a heat exchange surface for heat transfer with the refrigerating air duct, and the heat exchange surface is located at the top of the containing space.
  • an oxygen regulating device is connected to the accommodating space, and the oxygen regulating device is used to regulate the oxygen content in the accommodating space.
  • the refrigerating air duct is defined by a wall surface of the refrigerating housing and the fresh-keeping box body.
  • the refrigeration housing is provided with an air inlet and a return air vent communicating with the refrigeration air duct, and the air inlet and the return air vent are located on the same side of the refrigeration housing.
  • the refrigeration housing is provided with a partition between the air inlet and the return air opening, and the partition separates the refrigeration air duct to form an air inlet passage and a return air passage .
  • a refrigerator includes: a refrigerating compartment; a refrigerating air duct communicating with the refrigerating compartment, the refrigerating air duct having an air outlet; the above-mentioned fresh-keeping device is placed in the refrigerating compartment , Wherein the refrigerating air duct is in communication with the air outlet.
  • the refrigerator according to the embodiment of the present invention has at least the following beneficial effects: an independent fresh-keeping device is installed in the refrigerating compartment of the refrigerator, which increases the use of the refrigerator without opening the refrigerator.
  • the door affects the preservation environment of the containment space.
  • Figure 1 is an exploded view of the fresh-keeping device according to an embodiment of the present invention.
  • Fig. 2 is a schematic diagram of a rear view of the fresh-keeping device shown in Fig. 1;
  • Figure 3 is a cross-sectional view of A-A shown in Figure 2.
  • Fig. 4 is a B-B cross-sectional view shown in Fig. 2.
  • Fresh-keeping device 100 refrigerating housing 101; fresh-keeping box body 102; sealing strip 103; drawer 104; heat preservation housing 105; ionized oxygen module 106; accommodating space 107; heat exchange surface 108;
  • the partition 401 The partition 401.
  • 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 refrigerator can refer to a broad sense of refrigeration storage equipment, such as refrigerators, electric freezers, and refrigerating cabinets.
  • the fresh-keeping device 100 includes a refrigerating housing 101, a fresh-keeping box body 102, a sealing strip 103, a drawer 104, a heat-preserving housing 105, and an ionized oxygen module 106, wherein the fresh-keeping box body 102 , Is provided with a containing space 107 and a heat exchange surface 108, and is provided with an opening communicating with the containing space 107.
  • the drawer 104 can enter and be accommodated in the containing space 107 through the opening, so as to cooperate with the fresh-keeping box body 102 to form a sealed containing space 301 .
  • the sealing strip 103 at the opening of the accommodating space 107, the drawer 104 and the fresh-keeping box body 102 are more closely matched, and the airtightness of the accommodating space 301 is ensured.
  • the ionized oxygen module 106 is connected to the fresh-keeping box body 102.
  • the oxygen in the containing space 301 is consumed.
  • the ionized oxygen module 106 stops working. 301 is relatively airtight, and the oxygen concentration can be maintained for a certain period of time to provide a fresh-keeping environment; when the oxygen concentration rises to the set value, the ionized oxygen module 106 is turned on, and this cycle can keep the oxygen concentration within the set range for a long time.
  • the ionized oxygen module 106 is composed of the cathode of the air electrode rolled by manganese dioxide-activated carbon-polytetrafluoroethylene, the anode of the metal nickel mesh, and the conductive liquid of the K2CO3 solution with a concentration of 30%.
  • the ionization reaction process is: oxygen passes through the waterproof and breathable membrane and is dissolved in K2CO3 solution; the oxygen in the solution reacts under the catalysis of electrode manganese dioxide to generate hydroxide (OH-) ions; hydroxide (OH-) ions Under the action of an electric field, it moves to the nickel metal anode; hydroxide (OH-) ions react at the nickel metal anode to generate oxygen, and the oxygen accumulates into bubbles near the anode, which are discharged out of the system through the oxygen delivery system.
  • the cathode reaction consumes the oxygen in the solution.
  • the oxygen concentration in the solution is not saturated.
  • the oxygen in the air in the fresh-keeping box body 102 passes through the gas-permeable membrane to dissolve into the solution. The reaction continues, and the oxygen in the fresh-keeping box body 102 continues to be consumed, thus achieving The purpose of reducing the oxygen concentration of the fresh-keeping box 102.
  • the ionized oxygen module 106 can also be replaced by a nitrogen generator.
  • the nitrogen generating device is connected to one side of the fresh-keeping box body 102 and can fill the containing space 301 with the generated nitrogen.
  • the nitrogen generator adopts the method of increasing the nitrogen content and reducing the oxygen content by relatively reducing the oxygen content to achieve the effect of reducing the oxygen concentration. It is understandable that, in order to reduce the oxygen content, other oxygen regulating devices can also be used.
  • the oxygen regulating device can also be separated from the fresh-keeping box body 102 and set separately, that is, the oxygen regulating device serves as a containment space. After adjusting the oxygen content in 301, the fresh-keeping device 100 is placed in the refrigerator.
  • the nitrogen generator uses the pressure swing adsorption (PSA) nitrogen production method to remove oxygen from the air (cold air in the refrigerator in this embodiment) to produce pure nitrogen, and then Nitrogen gas is injected into the containing space 301 to achieve the purpose of keeping food such as fruits and vegetables fresh.
  • PSA pressure swing adsorption
  • Pressure swing adsorption is currently a mainstream technology for gas production.
  • Pressure swing adsorption specifically refers to pressurizing mixed gas under the condition of constant temperature, and using adsorbent to adsorb excess impurity gas to obtain a relatively pure single gas , And then use the method of reduced pressure or normal pressure to desorb the impurity gas in the adsorbent to make the second use of the adsorbent.
  • Oxygen adsorbents are currently commonly used adsorbents to achieve separation of oxygen and nitrogen and extract nitrogen from the air.
  • the adsorption pressure is the same, the adsorption capacity of oxygen adsorbents for oxygen is much higher than the adsorption capacity for nitrogen.
  • the PSA nitrogen production method uses this principle, uses air as a raw material, uses pressure swing adsorption technology, and uses oxygen adsorbents to selectively adsorb oxygen and nitrogen to achieve the separation of nitrogen and oxygen in the air, thereby producing pure nitrogen.
  • the oxygen content of the storage space 301 is adjusted for exemplary description.
  • the freshness keeping device 100 may also adjust the content of other gas components.
  • the adjustment method can refer to the oxygen adjustment method. Examples.
  • the bottom of the drawer 104 is also provided with a guide mechanism (not shown in the figure) that cooperates with the guide rail.
  • the refrigeration housing 101 is arranged on the outside of the fresh-keeping box body 102, the refrigeration housing 101 is provided with a cooling air duct 302, and the cooling air duct 302 cools the accommodating space 107 through the heat exchange surface 108.
  • the refrigeration housing 101 is provided with a refrigeration air duct 302, which can mean that the refrigeration air duct 302 is completely an inner cavity of the refrigeration housing 101, or that the refrigeration air duct 302 is located in the refrigeration housing 101 and
  • the space between the fresh-keeping box body 102 is defined by the refrigerating shell 101 and the fresh-keeping box body 102 together.
  • the heat exchange surface 108 is one of the walls of the fresh-keeping box body 102.
  • the refrigerating air duct 302 is connected with the air duct of the refrigerator.
  • the low-temperature air in the main air duct of the refrigerator enters the refrigerating air duct 302, and heat exchanges through the heat exchange surface 108 to transfer cold energy.
  • the food stored in the drawer 104 is cooled down.
  • a damper is provided in the air duct of the refrigerator, and the temperature of the storage space 301 can be adjusted according to the opening and closing of the damper.
  • There is no air outlet inside the storage space 301, and the refrigerating air duct 302 is an outer circulating air duct of the fresh-keeping box body 102.
  • the cold air can cool the wall surface of the fresh-keeping box body 102 through the cooling air duct 302 to realize the control of the temperature of the storage space 301.
  • the temperature of the accommodating space 107 can be adjusted.
  • the temperature of the accommodating space 107 can be adjusted according to the appropriate storage temperature of different food materials without affecting the low-oxygen adjustment function to extend the food. Storage cycle.
  • the refrigeration shell 101 is provided with a first insulation layer, one side of the refrigeration shell 101 is in contact with the heat exchange surface 108 of the fresh-keeping box body 102, and the other surfaces of the refrigeration shell 101 that are not in contact with the heat exchange surface 108 of the fresh-keeping box body 102 are all
  • the first thermal insulation layer can be provided so that the cooling capacity is transferred to the accommodating space 301 in a controlled and directional manner, and the temperature in the accommodating space 301 can be cooled quickly, and the temperature in the accommodating space 301 can have a large temperature difference with the outside of the fresh-keeping box 102.
  • the ionized oxygen module 106 when the ionized oxygen module 106 is working, a certain amount of heat is generated, which affects the temperature of the fresh-keeping box body 102, which may make the temperature in the accommodating space 107 higher than the temperature outside the fresh-keeping box body 102, and the cooling air duct 302 is provided.
  • the provision of a first thermal insulation layer on the refrigeration shell 101 allows the cooling to be transferred to the accommodating space 301 in a controlled and directional manner, so that the temperature in the accommodating space 301 can be cooled quickly, and this problem can be effectively overcome.
  • an installation space for accommodating the fresh-keeping box 102 is formed between the heat preservation shell 105 and the refrigeration housing 101, and the heat preservation shell 105 is provided with a second heat preservation layer.
  • the fresh-keeping box body 102 is wrapped between the first and second heat-preserving layers, which effectively improves the heat-preservation effect of the fresh-keeping box body 102.
  • the heat exchange surface 108 is located at the top of the containing space 107, that is, the refrigeration housing 101 is disposed above the fresh-keeping box body 102.
  • the refrigeration shell 101 is directly placed on the fresh-keeping box body 102, and assembled by general double-sided tape or hooks.
  • the side of the refrigeration shell 101 and the side of the fresh-keeping box 102 can also be integrated, or the refrigeration shell 101 can be provided.
  • the bottom surface and the top surface of the fresh-keeping box body 102 are integrally connected. It can be understood that, in some embodiments, the refrigeration housing 101 may also be provided on the side or bottom surface of the fresh-keeping box body 102.
  • the refrigeration shell 101 is arranged on the top of the fresh-keeping box 102.
  • the advantage is that the air in the drawer 104 mainly relies on natural convection for heat exchange. After the cold is transferred to the drawer 104 through the heat exchange surface 108 on the top, the upper air temperature is low. Large, it can naturally settle to form convection, and the efficiency is higher.
  • the heat exchange surface 108 is made of a metal material.
  • the refrigeration shell 101 is generally made of EPS (Expanded Polystyrene foam)/EPP (Expanded polypropylene)/polyurethane and other materials with poor heat transfer performance;
  • the drawer 104 is generally made of plastic material (commonly used PP (polypropylene) /PS(Polystyrene)/ABS(Acrylonitrile Butadiene Styrene acrylonitrile-butadiene-styrene copolymer), etc.), the heat transfer performance is slightly higher, while the metal material has higher heat transfer performance.
  • the heat transfer performance and heat transfer efficiency can be effectively improved, so that the temperature in the receiving space 301 can be cooled faster, and a faster temperature adjustment effect can be achieved. It is understandable that, in some embodiments, the contact part of the refrigeration shell 101 and the fresh-keeping box body 102 may also be made of a metal material, so as to further improve the heat transfer efficiency.
  • the heat exchange surface 108 is corrugated. By setting the heat exchange surface 108 in a corrugated shape, the effective contact area can be increased, and the heat exchange efficiency can be improved. It can be understood that, in some embodiments, the heat exchange surface 108 may also be provided with other concave-convex structures to also achieve the effect of increasing the effective contact area and improving the heat exchange efficiency.
  • a groove is provided on the side of the refrigerating shell 101 facing the fresh-keeping box body 102, and the groove and the heat exchange surface 108 form a refrigerating air duct 302. That is, one side of the refrigeration housing 101 has an open structure. For example, the bottom side of the refrigeration housing 101 shown in FIG. . Wherein, the heat exchange surface 108 of the fresh-keeping box body 102 is the bottom of the cooling air duct 302, and the groove is the upper part of the cooling air duct 302.
  • a cooling air duct 302 is formed between the outer surface of the fresh-keeping box body 102 and the refrigerating housing 101, and the cold air can directly cool the wall surface of the fresh-keeping box body 102 through the cooling air duct 302, that is, directly from the cooling air duct 302 to the fresh-keeping box
  • the heat exchange surface 108 of the body 102 is not obstructed by the refrigerating shell 101 in the middle, which shortens the heat exchange distance, thus realizing rapid control of the temperature of the receiving space 301.
  • a groove may also be provided on one side of the fresh-keeping box body 102, and the groove and the wall surface of the refrigerating housing 101 form a refrigerating air duct 302.
  • the refrigeration air duct 302 includes an air inlet 201 and a return air outlet 202, and the air inlet 201 and the return air outlet 202 are located on the same side of the refrigeration housing 101. It can be understood that, in some embodiments, the air inlet 201 and the air return inlet 202 may also be provided on different sides of the refrigeration housing 101.
  • the advantage that the air inlet 201 and the return air outlet 202 are located on the same side of the refrigeration housing 101 is that the direction of the air inlet and the return air are different by 180°, so that the cold air can stay in the refrigerating air duct 302 for a longer period of time, after achieving sufficient heat exchange Then it flows out of the refrigerating air duct 302 to improve the utilization rate.
  • a partition 401 is provided in the cooling air duct 302, and the partition 401 is located between the air inlet 201 and the air return 202.
  • the partition 401 extends from one side of the refrigeration shell 101 where the air inlet 201 is provided to the other side, so that the cold air entering from the air inlet 201 can be guided to the opposite side of the air inlet 201, and then folded back to the air inlet 201 On the other side, exit from the air return port 202, effectively extending the flow distance of the cold air, allowing the cold air to achieve sufficient heat exchange before flowing out of the refrigerating air duct 302, which improves the heat exchange efficiency.
  • the air inlet 201 can also be configured as a bell mouth structure to facilitate the rapid diffusion of cold air into the entire refrigerating air duct 302, making full use of the space of the refrigerating air duct 302, and increasing effective heat exchange contact Area, improve heat exchange efficiency.
  • the partition 401 divides the refrigeration air duct 302 into two parts, which are an inlet air passage and a return air passage.
  • the proportion of the air inlet passage is greater than the proportion of the return air passage, so that the cold air is realized. Slow flow in the air inlet channel realizes sufficient heat exchange, and rapid flow in the return air channel quickly discharges the cold component that realizes heat exchange out of the refrigeration air duct 302, thereby improving the heat exchange efficiency.
  • the refrigerator according to the second aspect of the present invention has a refrigerating compartment and a refrigerating air duct (not shown in the figure), the refrigerating air duct is in communication with the refrigerating compartment, and the refrigerating air duct has an air outlet (not shown in the figure);
  • the fresh-keeping device 100 in the above-mentioned embodiment of the present invention which is placed in the refrigerating compartment, in which the refrigerating air duct 302 is in communication with the air outlet. Therefore, the refrigerating air duct is directly used to cool the accommodating space 107.
  • the temperature of the refrigerating compartment of the refrigerator is most suitable for the preservation of fruit and vegetable foods.
  • the reserved space is relatively large and suitable for the placement of the preservation device 100.

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  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

一种保鲜装置和包含该保鲜装置的冰箱。该保鲜装置(100)包括：保鲜盒体(102)，设置有容纳空间(107)，并设置有连通容纳空间(107)的开口；制冷壳体(101)，设置于保鲜盒体(102)的外侧，制冷壳体(101)设置有制冷风道(302)，制冷风道(302)用于给容纳空间(107)制冷，制冷壳体(101)设置有第一保温层；以及抽屉(104)，能通过开口进入并收容于容纳空间(107)中，以与保鲜盒体(102)配合形成密闭的收容空间(301)。

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202010211861.X、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
本发明属于制冷储存设备领域，更具体而言，涉及保鲜装置及其冰箱。
背景技术
冰箱在气调保鲜领域，为了控制气体组分在一定范围内，需要提供一个保鲜密闭空间。然而密闭空间的内部空气无法和外部空气流通，外界冷源无法进入密闭空间内部对密闭空间进行有效的对流控温，以至于密闭空间的温度过高不能达到食物储存的最佳效果。
发明内容
本发明旨在至少部分解决以上所述技术问题之一。为此，本发明提出一种保鲜装置，有效对风冷冰箱密闭空间进行快速降温，延长食物保鲜周期。
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：保鲜盒体，设置有容纳空间，并设置有连通所述容纳空间的开口；制冷壳体，设置于所述保鲜盒体的外侧，所述制冷壳体设置有制冷风道，所述制冷风道用于给所述容纳空间制冷，所述制冷壳体设置有第一保温层；抽屉，能通过所述开口进入并收容于所述容纳空间中，以与所述保鲜盒体配合形成密闭的收容空间。
根据本发明实施例的保鲜装置，至少具有如下有益效果：制冷壳体设置于保鲜盒体的外侧，冷气可通过制冷壳体中的制冷风道对保鲜盒体的容纳空间降温，实现容纳空间的温度调控，可在不影响低氧气调功能的前提下，根据不同食材适宜的保存温度，对容纳空间温度进行调节，延长食物的储藏周期。
根据本发明的一些实施例，所述保鲜装置还包括保温壳体，所述保温壳体与所述制冷壳体之间形成容置所述保鲜盒体的安装空间，所述保温壳体设置有第二保温层。
根据本发明的一些实施例，所述保鲜盒体包括与所述制冷风道进行热传递的热交换面，至少部分所述热交换面由金属材料制成。
根据本发明的一些实施例，所述保鲜盒体包括与所述制冷风道进行热传递的热交换面，所述热交换面呈波纹状。
根据本发明的一些实施例，所述保鲜盒体包括与所述制冷风道进行热传递的热交换面，所述热交换面位于所述容纳空间的顶部。
根据本发明的一些实施例，所述容纳空间连接有氧气调节装置，所述氧气调节装置用于调节所述容纳空间内的氧气含量。
根据本发明的一些实施例，所述制冷风道由所述制冷壳体与所述保鲜盒体的壁面限定形成。
根据本发明的一些实施例，所述制冷壳体设置有与所述制冷风道连通的进风口和回风口，所述进风口和所述回风口位于所述制冷壳体的同一侧。
根据本发明的一些实施例，所述制冷壳体内设置有位于所述进风口和所述回风口之间的隔板，所述隔板将所述制冷风道分隔形成进风通道和回风通道。
根据本发明的第二方面实施例的冰箱，包括：冷藏间室；冷藏风道，与冷藏间室连通，所述冷藏风道具有出风口；上述的保鲜装置，置于所述冷藏间室中，其中，所述制冷风道与所述出风口连通。
根据本发明实施例的冰箱，除具有所述保鲜装置具有的技术效果外，至少具有如下有益效果：所述冰箱的冷藏间室内设置独立的保鲜装置，增加冰箱的用途，且不会因开动冰箱门而影响收容空间的保鲜环境。
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爆炸图；
图2为图1示出的保鲜装置的后视图的示意图；
图3为图2示出的A-A剖视图；以及
图4为图2示出的B-B剖视图。
附图标记：
保鲜装置100；制冷壳体101；保鲜盒体102；密封条103；抽屉104；保温壳体105；电离氧模组106；容纳空间107；热交换面108；
进风口201；回风口202；
收容空间301；制冷风道302；以及
隔板401。
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，若干的含义是一个或者多个，多个的含义是两个以上，大于、小于、超过等理解为不包括本数，以上、以下、以内等理解为包括本数。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。
参照图1至图4所示，为本发明第一方面的保鲜装置100，其用于冰箱中，冰箱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。
在一些实施例中，参照图1所示，保鲜装置100包括制冷壳体101、保鲜盒体102、密封条103、抽屉104、保温壳体105和电离氧模组106，其中，保鲜盒体102，设置有容纳空间107和热交换面108，并设置有连通容纳空间107的开口，抽屉104，能通过开口进入并收容于容纳空间107中，以与保鲜盒体102配合形成密闭的收容空间301。通过在容纳空间107的开口设置密封条103，使得抽屉104与保鲜盒体102配合更加紧密，保证收容空间301的密闭性。
电离氧模组106连接于保鲜盒体102，当电离氧模组106工作时，收容空间301内的氧气被消耗，氧气浓度降低到设定值时，电离氧模组106停止工作，由于收容空间301相对密闭，氧气浓度可以保持一定时间，提供保鲜环境；当氧气浓度升高到设定值时，电离氧模组106开启，如此循环，可以使氧气浓度长期保持在设定范围内。
在上述实施例中，电离氧模组106由二氧化锰-活性炭-聚四氟乙烯轧制成的空气电极的阴极、金属镍网的阳极以及30％浓度的K2CO3溶液导电液组成。电离反应过程为：氧气穿过防水透气膜，溶解在K2CO3溶液中；溶液中的氧气在电极二氧化锰催化下发生反应，生成氢氧根(OH-)离子；氢氧根(OH-)离子在电场的作用下，移动到镍金属阳极；氢氧根(OH-) 离子在镍金属阳极发生反应生成氧气，氧气在阳极附近集聚成气泡，通过氧气输送系统排出系统外。阴极反应消耗掉溶液中的氧气，溶液中氧气浓度不饱和，保鲜盒体102内空气中的氧气穿过透气膜溶解到溶液中，反应持续，保鲜盒体102内的氧气持续被消耗，从而达到降低保鲜盒体102氧气浓度的目的。
在一些实施例中，电离氧模组106也可以采用氮气发生装置代替。氮气发生装置连接于保鲜盒体102上的一侧，并能将生成的氮气充入收容空间301中。氮气发生装置采用增加氮气含量的方式，以相对减少氧气含量的方式来实现降低氧气浓度的作用。可以理解的是，为了降低氧气含量，还可以采用其他氧气调节装置，氧气调节装置除了可以连接于保鲜盒体102上，也可以与保鲜盒体102分离，单独设置，即氧气调节装置为收容空间301调节氧气含量后，再将保鲜装置100放置在冰箱中。
在上述实施例中，氮气发生装置利用变压吸附PSA(Pressure Swing Adsorption)制氮方法，将空气(本实施例中也可以是冰箱内的冷空气)中氧气去除从而产生纯净的氮气，再将氮气注入收容空间301内部以实现使水果蔬菜等食品保鲜的目的。变压吸附是目前生产气体的一项主流技术，变压吸附具体是指在温度不变的情况下，对混合气体进行加压，并利用吸附剂吸附多余的杂质气体从而获得较为纯净的单一气体，再用减压或常压的方法使得吸附剂内的杂质气体解吸出来，以对吸附剂进行二次利用。氧气吸附剂是目前实现氧氮分离，从空气中提取氮气的常用吸附剂，在吸附压力相同时，氧气吸附剂对氧的吸附量大大高于对氮的吸附量。PSA制氮方法利用这一原理，以空气为原料，运用变压吸附技术，利用氧气吸附剂对氧和氮的选择性吸附，实现空气中的氮和氧分离，从而生产出纯净的氮气。
需要说明的是，以上实施例中，以调节收容空间301的氧气含量进行示例性说明，在其他实施例中，保鲜装置100还可以是调节其他气体组分的含量，调节方式可以参考氧气调节的实施例。
在上述实施例中，为了确保抽屉104能够方便进入容纳空间107中，并且能将容纳空间107准确封闭，以形成密闭的收容空间301，保鲜盒体102内部设置导轨，本领域技术人员可以知悉的是，抽屉104底部也设置与导轨配合的导向机构(图中未示出)。
继续参照图1所示，制冷壳体101设置在保鲜盒体102的外侧，制冷壳体101设置有制冷风道302，制冷风道302通过热交换面108给容纳空间107制冷。需要说明的是，制冷壳体101设置有制冷风道302，可以指的是制冷风道302完全是制冷壳体101的一个内腔，也可以指的是制冷风道302位于制冷壳体101和保鲜盒体102之间，并且由制冷壳体101和保鲜盒体102共同限定而成。
热交换面108是保鲜盒体102的其中一个壁，制冷风道302与冰箱风道连接，冰箱主风道的低温空气进入制冷风道302，通过热交换面108进行热交换，将冷量传递到容纳空间107中，从而对盛放再抽屉104中的食物进行冷却降温。冰箱风道内设置风门，可以根据通过调整风门开闭，对收容空间301温度进行调整。收容空间301内部无送风口，制冷风道302为保鲜盒体102的外循环风道，冷气可通过制冷风道302对保鲜盒体102的壁面降温来实现收容空间301温度的调控。通过对保鲜盒体102的容纳空间107降温，实现容纳空间107的温度调控，可在不影响低氧气调功能的前提下，根据不同食材适宜的保存温度，对容纳空间107温度进行调节，延长食物的储藏周期。
制冷壳体101设置有第一保温层，制冷壳体101的一面与保鲜盒体102的热交换面108接触，制冷壳体101的其他不与保鲜盒体102的热交换面108接触的面均可以设置第一保温层，使得冷量受控地定向地传递给收容空间301，可以使收容空间301内降温速度快，而且收容空间301内温度可以和保鲜盒体102的外部有较大温差。特别地，电离氧模组106工作时，会产生一定的热量，影响保鲜盒体102的温度，可能使得容纳空间107内的温度高于保鲜盒体102外的温度，而通过设置制冷风道302以及在制冷壳体101设置第一保温层，使得冷量受控地定向地传递给收容空间301，可以使收容空间301内降温速度快，可以有效克服该问题。
在一些实施例中，保温壳体105与制冷壳体101之间形成容置保鲜盒体102的安装空间，并且保温壳体105设置有第二保温层。这样保鲜盒体102被包覆再第一保温层和第二保温层之间，有效提高了保鲜盒体102的保温效果，当对容纳空间107温度进行调节时，可以使得容纳空间107和保鲜盒体102的外部温度保持一定温差，从而可以调节到适合不同食材保鲜的温度。
在一些实施例中，参照图2和图3所示，热交换面108位于容纳空间107的顶部，即制冷壳体101设置在保鲜盒体102的上方。制冷壳体101直接放置在保鲜盒体102上，通过一般的双面胶或卡钩装配，也可以设置制冷壳体101的侧面与保鲜盒体102的侧面连成一体，或者设置制冷壳体101的底面与保鲜盒体102的顶面连成一体。可以理解的是，在一些实施例中，制冷壳体101也可以设置在保鲜盒体102的侧面或底面。制冷壳体101设置在保鲜盒体102的顶部，好处在于，抽屉104内的空气主要靠自然对流进行热交换，冷量通过顶部的热交换面108传递到抽屉104内后，上部空气温度低密度大，可以自然沉降形成对流，效率更高。
在一些实施例中，至少部分热交换面108由金属材料制成。制冷壳体101一般用EPS(Expanded Polystyrene聚苯乙烯泡沫)/EPP(Expanded polypropylene发泡聚丙烯)/ 聚氨酯等传热性能差的材料制成；抽屉104一般采用塑料材料(常用PP(聚丙烯)/PS(Polystyrene聚苯乙烯)/ABS(Acrylonitrile Butadiene Styrene丙烯腈-丁二烯-苯乙烯共聚物)等)，传热性能稍高，而金属材料传热性能更高。本实施例中，通过将部分或者全部的热交换面108材料选择为金属材料，能够有效提高传热性能及传热效率，使得收容空间301内降温速度更快，实现更快的温度调节效果。可以理解的是，在一些实施例中，制冷壳体101与保鲜盒体102接触的部分也可以采用金属材料制成，从而进一步提升传热效率。
在一些实施例中，热交换面108呈波纹状。通过将热交换面108设置成波纹状，可以增加有效接触面积，提高热交换效率。可以理解的是，在一些实施例中，热交换面108还可以设置成其他凹凸结构以同样实现增加有效接触面积，提高热交换效率的作用。
在一些实施例中，制冷壳体101朝向保鲜盒体102的一侧设置有凹槽，凹槽与热交换面108形成制冷风道302。即制冷壳体101的一侧为开口结构，例如图3所示的制冷壳体101的底侧为开口结构，没有底壁，制冷壳体101与保鲜盒体102之间共同组成制冷风道302。其中，保鲜盒体102的热交换面108为制冷风道302的底部，凹槽为制冷风道302的上部。这样，保鲜盒体102的外表面和制冷壳体101之间形成为制冷风道302，冷气可通过制冷风道302直接对保鲜盒体102的壁面降温，即直接从制冷风道302到保鲜盒体102的热交换面108，中间没有制冷壳体101的阻隔，缩短了热交换距离，如此实现对收容空间301温度的快速调控。可以理解的是，在一些实施例中，也可以在保鲜盒体102的一侧设置有凹槽，凹槽与制冷壳体101的壁面形成制冷风道302。
在一些实施例中，参照图2和图4所示，制冷风道302包括进风口201和回风口202，进风口201和回风口202位于制冷壳体101的同一侧。可以理解的是，在一些实施例中，进风口201和回风口202也可以设置于制冷壳体101的不同侧。进风口201和回风口202位于制冷壳体101的同一侧的优势在于，进风方向和回风方向相差180°，使得冷风可以在制冷风道302中停留更长时间，实现充分的热交换后再流出制冷风道302，提高利用率。
在一些实施例中，参照图4所示，制冷风道302内设置有隔板401，隔板401位于进风口201和回风口202之间。隔板401从制冷壳体101的设置有进风口201的一侧延伸至接近另一侧，如此可以将从进风口201进入的冷风引导至进风口201的相对侧，然后再折返回进风口201的一侧，从回风口202出去，有效延长了冷风的流动距离，使得冷风实现充分的热交换后再流出制冷风道302，提高热交换效率。
在一些实施例中，参照图4所示，进风口201还可以设置为喇叭口结构，便于冷风快速扩散至整个制冷风道302中，充分利用制冷风道302的空间，增加有效热交换的接触面 积，提高热交换效率。
在一些实施例中，参照图4所示，隔板401将制冷风道302分隔为两部分，分别为进风通道和回风通道，进风通道的比例大于回风通道的比例，如此实现冷风在进风通道缓慢流动，实现充分的热交换，而在回风通道快速流动，将实现热交换的冷分快速排出制冷风道302，提高热交换效率。
根据本发明第二方面的冰箱，其具有冷藏间室及冷藏风道(图中未示出)，冷藏风道与冷藏间室连通，冷藏风道具有出风口(图中未示出)；冰箱还具有上述本发明实施例中的保鲜装置100，置于冷藏间室中，其中制冷风道302与出风口连通。从而直接利用冷藏风道为容纳空间107降温。
需要说明的是，冰箱冷藏间室的温度最适应果蔬类食品的保鲜，通常而言，预留空间较大，适合保鲜装置100的放置。
上面结合附图对本发明实施例作了详细说明，但是本发明不限于上述实施例，在所属技术领域普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下作出各种变化。

Claims (10)

  1. 保鲜装置，用于冰箱，所述保鲜装置包括：
    保鲜盒体，设置有容纳空间，并设置有连通所述容纳空间的开口；
    制冷壳体，设置于所述保鲜盒体的外侧，所述制冷壳体设置有制冷风道，所述制冷风道用于给所述容纳空间制冷，所述制冷壳体设置有第一保温层；以及
    抽屉，能通过所述开口进入并收容于所述容纳空间中，以与所述保鲜盒体配合形成密闭的收容空间。
  2. 根据权利要求1所述的保鲜装置，还包括保温壳体，所述保温壳体与所述制冷壳体之间形成容置所述保鲜盒体的安装空间，所述保温壳体设置有第二保温层。
  3. 根据权利要求1所述的保鲜装置，其中，所述保鲜盒体包括与所述制冷风道进行热传递的热交换面，至少部分所述热交换面由金属材料制成。
  4. 根据权利要求1所述的保鲜装置，其中，所述保鲜盒体包括与所述制冷风道进行热传递的热交换面，所述热交换面呈波纹状。
  5. 根据权利要求1所述的保鲜装置，其中，所述保鲜盒体包括与所述制冷风道进行热传递的热交换面，所述热交换面位于所述容纳空间的顶部。
  6. 根据权利要求1所述的保鲜装置，其中，所述容纳空间连接有氧气调节装置，所述氧气调节装置用于调节所述容纳空间内的氧气含量。
  7. 根据权利要求1所述的保鲜装置，其中，所述制冷风道由所述制冷壳体与所述保鲜盒体的壁面限定形成。
  8. 根据权利要求1所述的保鲜装置，其中，所述制冷壳体设置有与所述制冷风道连通的进风口和回风口，所述进风口和所述回风口位于所述制冷壳体的同一侧。
  9. 根据权利要求8所述的保鲜装置，其中，所述制冷壳体内设置有位于所述进风口和所述回风口之间的隔板，所述隔板将所述制冷风道分隔形成进风通道和回风通道。
  10. 冰箱，包括：
    冷藏间室；
    冷藏风道，与冷藏间室连通，所述冷藏风道具有出风口；以及
    根据权利要求1至9任一项所述的保鲜装置，置于所述冷藏间室中，其中所述制冷风道与所述出风口连通。
PCT/CN2020/139115 2020-03-24 2020-12-24 保鲜装置及冰箱 WO2021190013A1 (zh)

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