CN113915877B - Refrigerator and control method thereof - Google Patents

Refrigerator and control method thereof Download PDF

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Publication number
CN113915877B
CN113915877B CN202110354440.7A CN202110354440A CN113915877B CN 113915877 B CN113915877 B CN 113915877B CN 202110354440 A CN202110354440 A CN 202110354440A CN 113915877 B CN113915877 B CN 113915877B
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China
Prior art keywords
humidity
moisture permeable
real
air outlet
gear
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CN202110354440.7A
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Chinese (zh)
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CN113915877A (en
Inventor
王磊
鞠晓晨
王海燕
赵兴
鲍雨锋
杨大海
杨春
栾福磊
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Hisense Refrigerator Co Ltd
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Hisense Refrigerator Co Ltd
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Priority to CN202110354440.7A priority Critical patent/CN113915877B/en
Publication of CN113915877A publication Critical patent/CN113915877A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • 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
    • F25D17/062—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 in household 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
    • F25D23/00—General constructional features
    • F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
    • 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
    • F25D29/005—Mounting of control devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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

Abstract

The invention relates to the technical field of refrigeration and fresh-keeping, and discloses a refrigerator and a control method thereof, wherein the refrigerator comprises a refrigerator body, wherein a refrigeration cavity and a machine cabin are defined in the refrigerator body; an evaporator is arranged in the machine cabin; a door; a controller; the temperature control fan is arranged in the cabin; the fresh-keeping container is arranged in the refrigerating cavity and comprises a cylinder body, a moisture permeable film, a humidity regulating switch and a humidity sensor; the inside of the barrel is limited with a fresh-keeping chamber, the barrel wall of the barrel is provided with a plurality of first moisture permeable holes, and the first moisture permeable holes are covered by a moisture permeable film; the humidity regulating switch is arranged on the cylinder body, and the humidity sensor is arranged in the fresh-keeping chamber; a cold air outlet corresponding to the moisture permeable film is arranged on the cavity wall of the refrigeration cavity; an air outlet channel of the temperature control fan is communicated with the cold air outlet, and an air door for controlling air quantity is arranged in the air outlet channel; the temperature control fan is used for driving air flowing through the evaporator to enter the air outlet duct. The invention can adjust the humidity in the cylinder and maintain the constant humidity in the cylinder.

Description

Refrigerator and control method thereof
Technical Field
The invention relates to the technical field of refrigeration and fresh-keeping, in particular to a refrigerator and a control method thereof.
Background
The picked fruit and vegetable is a living organism, the life metabolism is still orderly carried out, and the tissues can still breathe to consume organic substances. The strength of respiration directly affects the shelf life of fruits and vegetables.
Therefore, the refrigerator with fruit and vegetable fresh-keeping drawers is generally used for inhibiting the respiration of fruits and vegetables by different means, so that the shelf life of the fruits and vegetables is prolonged.
The external environmental factors influencing respiration of fruit and vegetable tissues mainly comprise the following: temperature, humidity, gas composition of the storage environment, and ethylene content in the storage environment.
There is a refrigerator with a drawer capable of adjusting humidity in the market at present, an air port is arranged at the rear part of the drawer, and the air quantity blown into the drawer is controlled by adjusting the size of the air port, so that the high, medium and low three-gear humidity adjustment of the drawer is realized.
In the above-mentioned humidifying mode, the wind gap and humidifying drawer external environment direct intercommunication, lead to the humidity in the drawer to receive external environment to influence greatly, consequently can appear following problem:
first, it is difficult for drawers to simultaneously meet the humidity control requirements of three gears, i.e., it is easy to have too high humidity in medium and low humidity gears or too low humidity in high humidity gears.
Secondly, when the drawer is in different humidity gears, the constant humidity inside the drawer is difficult to maintain, and the humidity variation fluctuation is large. Particularly, when the drawer is arranged in a middle-low wet gear, the humidity inside the drawer can greatly fluctuate. Moreover, the on-off operation of the refrigerator compressor can also cause great humidity fluctuation in the drawer. The humidity fluctuation is large, and the activity of hydrolase in food materials is enhanced, so that the aging and deterioration of fruits and vegetables are accelerated.
Thus, improvements are needed in the art.
Disclosure of Invention
The purpose of the invention is that: the refrigerator and the control method thereof are provided to solve the technical problems that in the refrigerator in the prior art, the humidity control requirements of three gears are difficult to be met simultaneously by controlling the air quantity blown into the drawer for humidity control, and in different humidity gears, the internal humidity is difficult to be maintained constant, and the fluctuation of humidity is large.
In order to achieve the above object, the present invention provides a refrigerator including:
the refrigerator comprises a box body, a refrigerator body and a refrigerator cabin, wherein a refrigerating cavity and a refrigerator cabin are defined in the box body; an evaporator is arranged in the machine cabin;
a door for opening and closing the refrigerating chamber;
a controller for controlling the electrical components within the case;
wherein, still include:
the temperature control fan is arranged in the cabin;
the fresh-keeping container is arranged in the refrigerating cavity and comprises a cylinder body, a moisture-permeable film, a humidity regulating switch and a humidity sensor;
a fresh-keeping chamber is defined in the barrel, a plurality of first moisture permeable holes are formed in the barrel wall of the barrel, and the first moisture permeable holes are covered by the moisture permeable film; the humidity regulating switch is arranged on the cylinder body, and the humidity sensor is arranged in the fresh-keeping cavity;
a cold air outlet corresponding to the moisture permeable film is arranged on the cavity wall of the refrigeration cavity;
an air outlet channel of the temperature control fan is communicated with the cold air outlet, and an air door for controlling air quantity is arranged in the air outlet channel; the temperature control fan is used for driving air flowing through the evaporator to enter the air outlet channel;
the humidity regulating switch, the humidity sensor and the air door are all electrically connected with the controller.
In some embodiments of the present application, the first moisture permeable hole is disposed on a rear side cylinder wall of the cylinder, and the cold air outlet is correspondingly disposed on a rear side cavity wall of the refrigeration cavity.
In some embodiments of the present application, the machine cabin includes a first machine cabin and a second machine cabin, and the first machine cabin is communicated with the second machine cabin through an external air duct;
the evaporator is arranged in the first machine cabin;
the second cabin is positioned between the rear side cavity wall of the refrigeration cavity and the rear side wall of the box body, and the temperature control fan is arranged in the second cabin.
In some embodiments of the present application, an air return opening is disposed on a cavity wall of the refrigeration cavity at a position below the cold air outlet, and the moisture permeable film is disposed at a position between the cold air outlet and the air return opening.
In some embodiments of the present application, the damper is disposed at an air inlet of the air outlet duct.
In some embodiments of the present application, an ethylene degradation catalytic layer is disposed on a surface of the moisture permeable film facing the fresh-keeping chamber.
In some embodiments of the present application, the fresh-keeping container further includes a sealing cover plate;
the cylinder wall provided with the first moisture permeable hole is also provided with a mounting groove for accommodating the moisture permeable membrane; the moisture permeable membrane is limited in the mounting groove by the sealing cover plate, so that the moisture permeable membrane covers the first moisture permeable hole, and a second moisture permeable hole is arranged at a position, corresponding to the first moisture permeable hole, on the sealing cover plate.
In some embodiments of the present application, a first clamping piece is disposed on an inner side of the mounting groove, and a second clamping piece detachably connected with the first clamping piece is disposed on an outer side of the sealing cover plate.
The application also provides a control method applied to the refrigerator described in any one of the above, comprising the following steps:
acquiring gear humidity of a humidity regulating switch and acquiring real-time humidity in a fresh-keeping chamber;
judging the real-time humidity and the gear humidity,
if the real-time humidity is within the range threshold of the gear humidity, controlling an air door to be closed;
if the real-time humidity is lower than the range threshold value of the gear humidity, controlling an air door to be closed;
and if the real-time humidity is higher than the range threshold of the gear humidity, controlling the air door to be opened until the real-time humidity is reduced to be within the range threshold of the gear humidity, and then controlling the air door to be closed.
In some embodiments of the present application, when the real-time humidity is above the range threshold of gear humidity,
judging the difference value between the real-time humidity and the gear humidity,
if the difference value is more than or equal to 20% RH, controlling the air door to be fully opened;
if the difference is within the range of 0-20% RH, the throttle is controlled to be opened 1/2 until the real-time humidity is reduced to be within the range threshold of the gear humidity, and then the throttle is controlled to be closed.
Compared with the prior art, the refrigerator and the control method thereof have the beneficial effects that:
according to the refrigerator and the control method thereof, the fresh-keeping container is arranged in the refrigeration cavity, the barrel of the fresh-keeping container is of an integral sealing structure, and only the moisture permeable holes required by the work of the moisture permeable film are reserved, so that the humidity and the gas composition in the barrel can be controlled. And the cold air outlet is arranged at the position corresponding to the moisture permeable film, and the air outlet amount of the air door is arranged to control the air outlet amount of the cold air outlet so as to control the temperature at the outer side of the moisture permeable film, so that the humidity in the cylinder body can be adjusted to be in any high, medium and low gears, and the humidity in the cylinder body can be maintained to be constant when different humidity gears are used, the fluctuation of humidity change is reduced, and the fresh-keeping container can meet the fresh-keeping requirements of different types of fruits and vegetables.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a partial schematic structure of a refrigerator according to an embodiment of the present invention;
fig. 2 is a schematic rear view of a refrigeration compartment;
FIG. 3 is a schematic view of an exploded construction of a refrigeration compartment;
FIG. 4 is a schematic view of the exploded construction of the rear side panel and the deck;
FIG. 5 is a schematic view of the structure of the fresh-keeping container;
FIG. 6 is a schematic view of an exploded construction of the fresh food container;
FIG. 7 is a schematic rear view of the cartridge;
FIG. 8 is a schematic view of an exploded construction of the cartridge, moisture permeable membrane and sealing cover plate;
FIG. 9 is a schematic diagram showing the positions of a cold air outlet, an air return opening and a moisture permeable film;
FIG. 10 is a schematic diagram II of the positions of the cold air outlet, the return air inlet and the moisture permeable film;
100, a box body; 110. a refrigeration chamber; 111. a cold air outlet; 112. an air return port; 113. a rear side cavity wall; 114. a housing; 115. a rear side plate; 116. a machine bin plate; 120. a machine cabin; 121. a second machine cabin;
200. a fresh-keeping container; 210. a cylinder; 211. a fresh-keeping chamber; 212. a mounting groove; 213. a first moisture permeable hole; 214. a first clamping piece; 215. an upper cylinder wall; 216. a rear side cylinder wall; 220. a moisture permeable membrane; 230. sealing the cover plate; 231. a second moisture permeable hole; 232. a second clamping piece; 240. a humidity regulating switch; 250. a humidity sensor; 260. a fresh-keeping drawer; 270. a slide rail; 280. a sealing rubber strip;
300. a temperature control fan; 310. an air outlet duct; 311. an air duct plate; 320. a damper;
400. an outer air duct.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 4, a refrigerator according to a preferred embodiment of the present invention mainly includes a cabinet 100, a door (not shown), a controller (not shown), and a fresh-keeping container 200.
Specifically, the refrigerator compartment 110 and the cabin 120 are defined in the interior of the case 100, and an evaporator (not shown) and a temperature control fan 300 are provided in the cabin 120. The door is used to open and close the refrigerating chamber 110. The controller is used for controlling the electric elements in the refrigerator body 100 to work according to the design instruction, and is a main control component of the refrigerator. The fresh food container 200 is disposed within the refrigeration cavity 110.
Referring to fig. 5-8, the fresh container 200 includes a cartridge 210, a moisture permeable membrane 220, a humidity control switch 240, and a humidity sensor 250.
The cylinder 210 is of an integral sealing structure, a fresh-keeping chamber 211 is defined in the cylinder, a plurality of first moisture permeable holes 213 are formed in the cylinder wall of the cylinder 210, and the first moisture permeable holes 213 are covered by a moisture permeable film 220. The humidity control switch 240 is disposed on the cylinder 210, and the humidity sensor 250 is disposed in the fresh-keeping chamber 211.
Referring to fig. 9 and 10, a cool air outlet 111 corresponding to the moisture permeable film 220 is provided on a cavity wall of the refrigerating chamber 110. Referring to fig. 3 and 4, an air outlet duct 310 of the temperature control fan 300 is communicated with the cold air outlet 111, and an air door 320 for controlling air volume is provided in the air outlet duct 310. The temperature-controlled blower 300 drives air flowing through the evaporator into the outlet duct 310, and enters the refrigerating chamber 110 from the cool air outlet 111 by the control of the damper 320. The humidity control switch 240, the humidity sensor 250, and the damper 320 are all electrically connected to the controller.
The moisture permeable membrane 220 is a prior art membrane material which is permeable and impermeable only, has a certain humidity adjusting function, and can constantly maintain the humidity inside the membrane at about 90% RH without being influenced by changes of external environmental air flow and the like when no external condition is interfered. The technical principle of the moisture permeable film 220 is as follows: when there is a difference in chemical potential of the environment on both sides of the moisture permeable membrane 220, moisture transfer-equilibrium occurs. The difference in chemical potential energy of the environment across the moisture permeable film 220 can be expressed as Δm=m o －M i ＝R(T o lnp o －T i lnp i ) Where P is the water vapor pressure, T is the temperature, o is the outside of the moisture permeable film 220 (i.e., outside of the cylinder 210), and i is the inside of the moisture permeable film 220 (i.e., inside of the cylinder 210). In the above formula, if Δm > 0, the outside water vapor of the moisture permeable film 220 is transferred to the inside, that is, the outside water vapor of the cylinder 210 is transferred to the cylinder 210, so that the humidity in the cylinder 210 increases. The transition is a spontaneous process to reach an equilibrium state (Δm=0) and continues until Δm=0. If Δm=0, the water vapor on both sides of the moisture permeable film 220 is in a dynamic equilibrium state, and the moisture is not transferred, i.e., the humidity in the cylinder 210 is neither increased nor decreased. If Δm < 0, the water vapor inside the moisture permeable film 220 is transferred to the outside, that is, the water vapor inside the cylinder 210 is transferred to the outside of the cylinder 210, and the humidity inside the cylinder 210 is lowered. The transition is a spontaneous process to reach an equilibrium state (Δm=0) and continues until Δm=0.
In the technical solution of the present application, the cylinder 210 of the fresh-keeping container 200 is of an integral sealing structure, and only the moisture permeable holes (the first moisture permeable holes 213) required for the operation of the moisture permeable film 220 are left. According to the formula of respiration of fruits and vegetables: c (C) 6 H 12 O 6 +6O 2 →6CO 2 +6H 2 O+ energy is consumed by respiration of the fruits and vegetables placed in the cylinder 210 2 Producing CO with remarkable effect on fresh-keeping 2 . Because of the effect of the moisture permeable membrane 220, the inside of the cylinder 210 only exchanges moisture with the outside and does not exchange with the outside gas, so that CO can be effectively accumulated in the cylinder 210 2 O for the environment in the cylinder 210 2 Concentration is reduced, CO 2 The concentration is increased, so that the respiration intensity of fruits and vegetables is reduced, and the fresh-keeping effect is improved. O in the airtight cylinder 210 with the increase of the storage time 2 Is continuously consumed, CO 2 The fruit and vegetable fresh-keeping agent is continuously generated, can continuously inhibit the respiration of fruits and vegetables, and achieves the effect of long-acting fresh-keeping.
In addition, in the technical scheme of the application, the temperature of the outer side of the moisture permeable film 220 can be adjusted to change the delta M, so that the purpose of humidity regulation is achieved. The structure that this application mainly adopted does: a cool air outlet 111 is provided at a position corresponding to the moisture permeable film 220, and a damper 320 is provided to control the air outlet quantity of the cool air outlet 111, thereby controlling the temperature of the outside of the moisture permeable film 220.
Specifically, the present application proposes a control method applied to the refrigerator in the above embodiment, which mainly includes the following steps:
first, the controller acquires the gear humidity of the humidity adjustment switch 240, and acquires the real-time humidity in the fresh food compartment 211 through the humidity sensor 250.
And then judging the real-time humidity and the gear humidity. The humidity of the gear is provided with three gears of high, medium and low, the humidity range corresponding to the high-humidity gear is 90-98% RH, and the high-humidity gear is suitable for storing leafy vegetables, cauliflower, fungus, beans vegetables for vegetables, stone fruits, kernel fruits and berries fruits; the humidity range corresponding to the middle wet gear is 80-90% RH, and the middle wet gear is suitable for storing rhizome vegetables such as potatoes, sweet potatoes and the like, solanaceous vegetables and citrus fruits; the humidity range corresponding to the low-humidity gear is 70-80% RH, and the low-humidity gear is suitable for storing root vegetables such as onion, garlic and the like, melon vegetables and fruits.
If the real-time humidity is within the range threshold of the gear humidity, the control damper 320 is closed, that is, the temperature outside the moisture permeable film 220 does not need to be adjusted, so that the inside and outside of the cylinder 210 can be kept in a balanced state (Δm=0).
If the real-time humidity is lower than the range threshold of the gear humidity, according to the chemical potential difference formula, i.e. Δm > 0, the water vapor outside the cylinder 210 will spontaneously transfer to the cylinder 210 by the moisturizing and moisture-permeable effect of the moisture-permeable membrane 220 itself, so that the humidity inside the cylinder 210 will gradually increase until reaching the equilibrium state (Δm=0). No manual adjustment is required at this point, the control damper 320 is closed.
If the real-time humidity is above the range threshold of the gear humidity, the damper 320 is controlled to open. After the damper 320 is opened, the temperature outside the moisture permeable film 220 is lowered, i.e., T o Lowering, T o Reduce p o Decrease, M is according to the chemical potential energy difference formula o And also decreases, resulting in Δm < 0, and water vapor in the cylinder 210 is transferred outside the cylinder 210, thereby decreasing the humidity in the cylinder 210. Until the real-time humidity drops to within the range threshold of the gear humidity, then the damper 320 is closed.
Further, when the real-time humidity is higher than the range threshold of the gear humidity, a difference value between the real-time humidity and the gear humidity is judged.
If the difference is not less than 20% RH, the damper 320 is controlled to be fully opened, and the temperature outside the moisture permeable membrane 220 is reduced at the maximum rate, so that the humidity in the cylinder 210 is rapidly reduced. If the difference is within the range of 0-20% RH, the damper 320 is controlled to open 1/2, the humidity in the cylinder 210 is allowed to decrease slowly until the real-time humidity decreases to within the range threshold of the gear humidity, and then the damper 320 is controlled to close.
In summary, the fresh-keeping container 200 is disposed in the refrigeration chamber 110 of the refrigerator according to the present invention, the cylinder 210 of the fresh-keeping container 200 is of an integral sealing structure, and only the moisture permeable holes required by the operation of the moisture permeable film 220 are reserved, which is beneficial to controlling the humidity and the gas composition in the cylinder 210. And, the cold air outlet 111 is provided at the position corresponding to the moisture permeable film 220, and the air door 320 is provided to control the air output of the cold air outlet 111, so as to control the temperature of the outer side of the moisture permeable film 220, thereby adjusting the humidity in the cylinder 210 to be in any gear of high, medium and low, and maintaining the humidity in the cylinder 210 constant when in different humidity gears, reducing the fluctuation of humidity variation, so that the fresh-keeping container 200 can meet the fresh-keeping requirements of different types of fruits and vegetables.
In some embodiments of the present application, referring to fig. 6 and 7, the fresh food container 200 further includes a fresh food drawer 260 and a slide 270. The barrel 210 is surrounded by a bottom side barrel wall, an upper side barrel wall 215, a transverse side barrel wall and a rear side barrel wall 216 to form a rectangular box body structure with a forward opening, a slide rail 270 is arranged on the transverse side barrel wall, and a fresh-keeping drawer 260 is slidably connected with the slide rail 270, so that the fresh-keeping drawer 260 can be pulled in and out of the barrel 210.
In some embodiments of the present application, referring to fig. 6, a sealing strip 280 is further provided at the forward opening edge of the barrel 210. After the fresh-keeping drawer 260 is pushed into the cylinder 210, the inner surface of the front end of the fresh-keeping drawer 260 is contacted with the sealing rubber strip 280, so that the fresh-keeping drawer 260 and the cylinder 210 form sealing connection.
In some embodiments of the present application, referring to fig. 2-4, the cabin 120 includes a first cabin (not shown in the drawings) and a second cabin 121, where the first cabin is communicated with the second cabin 121 through an external air duct 400. The evaporator is disposed in the first cabin, the second cabin 121 is disposed between the rear side cavity wall 113 of the refrigeration chamber 110 and the rear side wall of the case 100, and the temperature control fan 300 is disposed in the second cabin 121.
In some embodiments of the present application, referring to fig. 2-4, the refrigeration cavity 110 includes a housing 114, a rear side panel 115, and a cabinet panel 116. The rear side plate 115 is provided in the case 114 with an installation space between the rear side plate 115 and the rear wall of the case 114, and the rear side plate 115 and the rear wall of the case 114 together form a rear side chamber wall 113 of the refrigerating chamber 110. The rear surface of the rear side plate 115 is provided with a mounting cavity for mounting the temperature control fan 300, and the cabin plate 116 is covered on the mounting cavity to form a second cabin 121. The outer air duct 400 and the air outlet duct 310 are both positioned in the installation space, and the position of the cold air outlet 111 can be seen after the air duct plate 311 of the air outlet duct 310 is disassembled, as shown in fig. 4.
In some embodiments of the present application, referring to fig. 3 and 4, the damper 320 is disposed at the air inlet of the air outlet duct 310. The above arrangement allows the damper 320 to control the wind direction more effectively, avoiding the wind from forming a vortex in the outlet duct 310.
In some embodiments of the present application, referring to fig. 6-8, the first moisture permeable aperture 213 is provided on the rear side cylinder wall 216 of the cylinder. Referring to fig. 3 and 4, the cool air outlets 111 are correspondingly provided on the rear side cavity wall 113 of the refrigerating chamber 110. The above arrangement is beneficial to reasonably arranging the temperature control fan 300 and the air outlet duct 310 in the box body 100.
In some embodiments of the present application, referring to fig. 9 and 10, an air return port 112 is disposed on a cavity wall of the refrigeration chamber 110 at a position below the cold air outlet 111, and the moisture permeable film 220 is disposed at a position between the cold air outlet 111 and the air return port 112. The return air inlet 112 is specifically disposed on the rear side plate 115. The cool air outlet 111 is provided mainly for reducing the temperature outside the moisture permeable film 220 so as to reduce the humidity in the drum 210. When the temperature control fan 300 is started to work and the air door 320 is opened, cold air flows from the cold air outlet 111 to the air return 112, and the moisture permeable film 220 is just located on the cold air flow path, so that the temperature outside the moisture permeable film 220 can be reduced more quickly in the air circulation process, moisture in the cylinder 210 can be dispersed more quickly, the humidity in the cylinder 210 can be reduced quickly, and the purpose of adjustment can be achieved. In addition, the water vapor can be condensed into the condensation when the water vapor is cooled at a low temperature, so that the redundant water vapor in the barrel 210 can quickly form the condensation, and the condensation is diffused out of the barrel 210 through the capillary action of the moisture permeable membrane 220, so that the internal humidity of the barrel 210 is ensured not to be supersaturated, and the respiration of fruits and vegetables is favorably inhibited.
In some embodiments of the present application, the side of the moisture permeable film 220 facing the fresh keeping chamber 211 is provided with an ethylene degradation catalyst layer. The ethylene degradation catalyst layer can be formed by coating a metal catalyst compound having an ethylene catalytic function on one surface of the moisture permeable film 220 facing the fresh keeping chamber 211. Ethylene degradation catalyst can make ethylene and H under the catalysis action 2 O reacts to generate secondary products such as acetaldehyde and the like, and finally is degraded into CO 2 And H 2 O, the ethylene loses ripening.
The invention is provided with the ethylene degradation catalytic layer on one surface of the moisture permeable film 220 facing the fresh-keeping chamber 211, and ethylene generated in the storage process of fruits and vegetables can be finally degraded into CO 2 And H 2 O effectively reduces the ethylene content inside the barrel 210. H produced by ethylene degradation 2 O promotes the moisture partial pressure of the moisture permeable membrane 220 to be increased, the moisture permeable efficiency is improved, and simultaneously, CO is produced 2 Continues to accumulate within the barrel 210. The above arrangement controls the related conditions which are favorable for inhibiting the respiration of fruits and vegetables to be at the optimal level by controlling the ethylene content and the gas composition in the cylinder 210, thereby effectively reducing the respiration intensity of fruits and vegetables, prolonging the fresh-keeping period of fruits and vegetables and effectively reducing the nutrition loss of fruits and vegetables in the storage process.
In some embodiments of the present application, referring to fig. 8, the fresh food container 200 further includes a sealing cover 230. The wall of the cylinder provided with the first moisture permeable hole 213 is also provided with a mounting groove 212 for accommodating the moisture permeable film 220. The moisture permeable film 220 is defined in the mounting groove 212 by the sealing cover 230 such that the moisture permeable film 220 covers the first moisture permeable hole 213, and the sealing cover 230 is provided with the second moisture permeable hole 231 at a position corresponding to the first moisture permeable hole 213.
In some embodiments of the present application, referring to fig. 8, a first clamping member 214 is disposed on an inner side of the mounting groove 212, and a second clamping member 232 detachably connected to the first clamping member 214 is disposed on an outer side of the sealing cover 230.
In the above embodiment, referring to fig. 8, the first clamping member 214 is a buckle, the second clamping member 232 is a clamping hole, and the sealing cover 230 can be directly clamped into the mounting groove 212.
The sealing cover plate 230 of the application utilizes a detachable buckle structure to limit the moisture-permeable film 220 in the mounting groove 212 to form an internal integrated design, and no special sealing treatment is needed after mounting, so that the cost of sealing elements is effectively saved.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present invention, and these modifications and substitutions should also be considered as being within the scope of the present invention.

Claims (6)

1. A refrigerator, comprising:
the refrigerator comprises a box body, a refrigerator body and a refrigerator cabin, wherein a refrigerating cavity and a refrigerator cabin are defined in the box body; an evaporator is arranged in the machine cabin;
a door for opening and closing the refrigerating chamber;
a controller for controlling the electrical components within the case;
characterized by further comprising:
the temperature control fan is arranged in the cabin;
the fresh-keeping container is arranged in the refrigerating chamber and comprises a cylinder body, a moisture permeable film, a humidity regulating switch and a humidity sensor, wherein water vapor at two sides of the moisture permeable film can be transferred in different directions along with chemical potential energy changes of environments at two sides, and an ethylene degradation catalytic layer is arranged on one surface of the moisture permeable film facing the fresh-keeping chamber; wherein the chemical potential difference of the environment on both sides of the moisture permeable membrane can be expressed asWherein P is water vapor pressure, T is temperature, o is the outside of the moisture permeable film, and i is the inside of the moisture permeable film; if->The water vapor outside the moisture permeable film is transferred to the inner side; if->The water vapor at the two sides of the moisture permeable film is not transferred; if->The vapor inside the permeable membrane is transferred to the outside;
a fresh-keeping chamber is defined in the barrel, a plurality of first moisture permeable holes are formed in the barrel wall of the barrel, and the first moisture permeable holes are covered by the moisture permeable film; the humidity regulating switch is arranged on the cylinder body, and the humidity sensor is arranged in the fresh-keeping cavity;
a cold air outlet corresponding to the moisture permeable film is arranged on the cavity wall of the refrigeration cavity;
the first moisture permeable hole is arranged on the rear side cylinder wall of the cylinder body, and the cold air outlet is correspondingly arranged on the rear side cavity wall of the refrigeration cavity;
an air return port is arranged on the cavity wall of the refrigeration cavity and positioned below the cold air outlet, and the moisture permeable film is positioned between the cold air outlet and the air return port;
an air outlet channel of the temperature control fan is communicated with the cold air outlet, and an air door for controlling air quantity is arranged in the air outlet channel; the temperature control fan is used for driving air flowing through the evaporator to enter the air outlet channel;
the humidity regulating switch, the humidity sensor and the air door are electrically connected with the controller; the controller is used for:
acquiring gear humidity of a humidity regulating switch, and acquiring real-time humidity in a fresh-keeping chamber through a humidity sensor;
judging the real-time humidity and the gear humidity;
if the real-time humidity is within the range preset of the gear humidity, the air door is controlled to be closed;
if the real-time humidity is lower than the range preset of the gear humidity, the air door is controlled to be closed, and the water vapor outside the cylinder spontaneously transfers to the cylinder by virtue of the moisturizing and moisture permeability effects of the moisture permeable membrane;
if the real-time humidity is higher than the range preset of the gear humidity, the air door is controlled to be opened, cold air flows from the cold air outlet to the return air inlet, the moisture permeable membrane is positioned on the cold air flowing path, the temperature outside the moisture permeable membrane can be rapidly reduced in the air circulation process, and redundant moisture in the cylinder body is diffused outside the cylinder body through the moisture permeable membrane;
judging the difference value between the real-time humidity and the gear humidity,
if the difference value is more than or equal to 20% RH, controlling the air door to be fully opened, and reducing the temperature outside the moisture permeable membrane at the maximum speed;
if the difference is within the range of 0-20% RH, the throttle is controlled to be opened 1/2 until the real-time humidity is reduced to be within the range threshold of the gear humidity, and then the throttle is controlled to be closed.
2. The refrigerator of claim 1, wherein the cabinet comprises a first cabinet and a second cabinet, and the first cabinet is communicated with the second cabinet through an external air duct;
the evaporator is arranged in the first machine cabin;
the second cabin is positioned between the rear side cavity wall of the refrigeration cavity and the rear side wall of the box body, and the temperature control fan is arranged in the second cabin.
3. The refrigerator of claim 1, wherein the damper is provided at an air inlet of the air outlet duct.
4. The refrigerator of claim 1, wherein the fresh-keeping container further comprises a sealing cover plate;
the cylinder wall provided with the first moisture permeable hole is also provided with a mounting groove for accommodating the moisture permeable membrane; the moisture permeable membrane is limited in the mounting groove by the sealing cover plate, so that the moisture permeable membrane covers the first moisture permeable hole, and a second moisture permeable hole is arranged at a position, corresponding to the first moisture permeable hole, on the sealing cover plate.
5. The refrigerator of claim 4, wherein a first clamping member is disposed on an inner side of the mounting groove, and a second clamping member detachably connected with the first clamping member is disposed on an outer side of the sealing cover plate.
6. A control method applied to the refrigerator according to any one of claims 1 to 5, comprising the steps of:
acquiring gear humidity of a humidity regulating switch and acquiring real-time humidity in a fresh-keeping chamber;
judging the real-time humidity and the gear humidity,
if the real-time humidity is within the range threshold of the gear humidity, controlling an air door to be closed;
if the real-time humidity is lower than the range threshold value of the gear humidity, controlling an air door to be closed;
if the real-time humidity is higher than the range threshold of the gear humidity, controlling the air door to be opened until the real-time humidity is reduced to be within the range threshold of the gear humidity, and then controlling the air door to be closed;
judging the difference value between the real-time humidity and the gear humidity,
if the difference value is more than or equal to 20% RH, controlling the air door to be fully opened, and reducing the temperature outside the moisture permeable membrane at the maximum speed;
if the difference is within the range of 0-20% RH, the throttle is controlled to be opened 1/2 until the real-time humidity is reduced to be within the range threshold of the gear humidity, and then the throttle is controlled to be closed.
CN202110354440.7A 2021-04-01 2021-04-01 Refrigerator and control method thereof Active CN113915877B (en)

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CN117053463B (en) * 2023-07-26 2024-04-26 江苏盛泽农业开发有限公司 Onion cold-stored fresh-keeping device

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CN211823362U (en) * 2019-11-21 2020-10-30 青岛海尔电冰箱有限公司 Refrigerator with a door

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JP2017190875A (en) * 2016-04-11 2017-10-19 パナソニックＩｐマネジメント株式会社 refrigerator
CN109869974A (en) * 2017-12-05 2019-06-11 东芝生活电器株式会社 Refrigerator
CN110513936A (en) * 2018-05-22 2019-11-29 青岛海尔股份有限公司 Refrigerator
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