CN106642912A

CN106642912A - Refrigerating and freezing device and fresh-keeping control method thereof

Info

Publication number: CN106642912A
Application number: CN201611097037.6A
Authority: CN
Inventors: 姜波; 王磊; 娄喜才; 王胜飞
Original assignee: Qingdao Haier Co Ltd
Current assignee: Qingdao Haier Co Ltd
Priority date: 2016-12-02
Filing date: 2016-12-02
Publication date: 2017-05-10
Anticipated expiration: 2036-12-02
Also published as: CN106642912B

Abstract

The invention provides a refrigerating and freezing device and a fresh-keeping control method thereof. The refrigerating and freezing device comprises a box with a limited storage space, an air adjusting film assembly, an air suction pump and an oxygen concentration sensor, wherein an airtight fresh-keeping sub-space is formed in the storage space, the oxygen concentration sensor is arranged in the fresh-keeping sub-space, and the air suction pump is used for enabling air in the fresh-keeping sub-space of the storage space to permeate through the air adjusting film assembly, so that an air atmosphere facilitating food fresh keeping is formed in the fresh-keeping sub-space of the storage space. The fresh-keeping control method comprises the following steps of acquiring food type information input from the outside; determining the corresponding oxygen concentration range according to the food type information; and acquiring the oxygen concentration, measured through the oxygen concentration sensor, of the fresh-keeping sub-space, and controlling the air suction pump correspondingly, so that the oxygen concentration of the fresh-keeping sub-space is kept in the oxygen concentration range and the storage requirements of foods of different types are met.

Description

Refrigerating device and its fresh-keeping control method

Technical field

The present invention relates to storing technical field, more particularly to a kind of refrigerating device and its fresh-keeping control method.

Background technology

Food is the energy source of people's existence, most important for people.For food storage, main two Aspect is to be incubated and fresh-keeping, it is however generally that, temperature is obvious for the effect of the microbial activities on food, the enzyme in food has Impact, the reduction of temperature can make food delay to go bad, and refrigerator is to maintain a kind of refrigeration plant of constant low temperature, is also that one kind makes Food or other articles keep the product for civilian use of constant low temperature cold conditions.

With the raising of quality of the life, consumer to storing the fresh-keeping requirement of food also more and more higher, particularly to food The requirement of color and luster, the mouthfeel of thing etc. also more and more higher.Therefore, the food of storage should also be as ensureing during storing, the color of food Pool, mouthfeel, freshness etc. keep as far as possible constant.Therefore user it is also proposed higher wanting to the preservation technique of refrigerator Ask.

The preservation technique of refrigerator mainly adopts vacuum freshness retaining technology in prior art, and vacuum freshness retaining food eliminates packaging to be held Partial air (oxygen) in device, destroys the condition of bacterium and microbial growth, so as to be effectively prevented food apoilage. At present Jing frequently with vacuum freshness retaining mode be that vacuum bag is fresh-keeping and vacuum storing compartment is fresh-keeping.

Fresh-keeping using vacuum bag, consumer stores every time food and is required for carrying out vacuumizing action, and troublesome poeration cannot Consumer's likes.It is fresh-keeping using vacuum storing compartment, because casing etc. is rigid structure, vacuum state is kept, it is true to taking out The requirement of empty set system is very high, and the sealing property requirement to refrigerator is very high, often picks and places an article, and the new air poured into is more, to ice The consumption of case energy is larger.

On the other hand under the vacuum environment in refrigerator, food reception cold is relatively difficult, is particularly disadvantageous for food Cooling.Further, since being vacuum environment, user opens every time refrigerator doors etc. needs the very big strength of expense, user is caused using not Just.Although some refrigerators can by pumped vacuum systems to indoor ventilation between vacuum storing, but so can cause user wait compared with For a long time, poor in timeliness.Vacuum time is longer, and it is serious to will also result in the deformation such as refrigerator body, i.e., existing with vacuumizing knot The refrigerator of structure can not well complete vacuum freshness retaining, need the intensity of casing etc. very big, realize that requirement is very high, and cost is very high.

The content of the invention

It is an object of the present invention to provide relatively low, the of good preservation effect refrigerating device of a kind of cost and its fresh-keeping Control method.

The present invention one further objective is that will be so that refrigerating device and its fresh-keeping control method meet inhomogeneity The storage requirements of the food of type.

Present invention firstly provides a kind of fresh-keeping control method of refrigerating device, refrigerating device includes defining The casing of storage space, controlled atmosphere membrane module, aspiration pump and oxygen concentration sensor, wherein, have in storage space closed Fresh-keeping subspace, oxygen concentration sensor is arranged in fresh-keeping subspace, and aspiration pump is configured to make the fresh-keeping of storage space The gas of subspace permeates through controlled atmosphere membrane module, with the gas atmosphere in the fresh-keeping subspace of storage space beneficial to food fresh-keeping Enclose, and fresh-keeping control method includes：The food preservation information of outside input is obtained, including at least fresh-keeping in food preservation information The kind of information of food is preserved in subspace；Corresponding fresh-keeping service condition, fresh-keeping fortune are determined according to the kind of information of food Row condition is at least including the corresponding oxygen concentration range of kind of information of food；Obtain the fresh-keeping son of oxygen concentration sensor measurement The oxygen concentration in space simultaneously accordingly controls aspiration pump, so that the oxygen concentration of fresh-keeping subspace is maintained in oxygen concentration range.

Alternatively, refrigerating device also includes：Human-computer interaction device, and obtain the food preservation information of outside input The step of also include：The food preservation information that receive user is input into by human-computer interaction device.

Alternatively, human-computer interaction device includes multiple buttons, and each button corresponds to a group food, and receive user is logical The step of food preservation information for crossing human-computer interaction device input, also includes：Detect the Action Events of multiple buttons；According to operation Event determines selection operation of the user to multiple buttons；The corresponding food species of selected button are determined, to obtain food storage Tibetan information.

Alternatively, fresh-keeping service condition includes the oxygen concentration upper limit and oxygen concentration lower limit, and accordingly controls aspiration pump The step of include：When the oxygen concentration of fresh-keeping subspace is equal to or less than oxygen concentration lower limit, aspiration pump is closed；In fresh-keeping son When the oxygen concentration in space is greater than or equal to the oxygen concentration upper limit, start aspiration pump.

Alternatively, also include during corresponding control aspiration pump：Detect the event that fresh-keeping subspace is opened and closed；True After fixed fresh-keeping subspace is opened, aspiration pump and oxygen concentration sensor is driven to remain turned-off；It is determined that fresh-keeping subspace is closed After closing, make oxygen concentration sensor resume work, and drive aspiration pump continuous service until the oxygen in fresh-keeping subspace is dense low In or equal to oxygen concentration lower limit.

Alternatively, also include after it is determined that fresh-keeping subspace is closed：Send the cue for updating food preservation information； And reacquire the food preservation information of outside input.

According to another aspect of the present invention, a kind of refrigerating device is additionally provided, it includes：Casing, limits in it By storage space, storage space is interior to have closed fresh-keeping subspace；Controlled atmosphere membrane module, its surrounding space connects with fresh-keeping subspace It is logical, and controlled atmosphere film is provided with, oxygen rich gas collecting chamber is formed with controlled atmosphere membrane module；Aspiration pump, its entrance point is communicated to oxygen-enriched Gas collection chamber, and be configured to outwards extract the gas of oxygen rich gas collecting chamber out, so that at least part of in fresh-keeping subspace Oxygen enters oxygen rich gas collecting chamber by controlled atmosphere film, so as to reduce the oxygen concentration in fresh-keeping subspace；Controller, with pumping The control end of pump is connected, and is configured to：The food preservation information of outside input is obtained, including at least fresh-keeping in food preservation information The kind of information of the food preserved in subspace；Corresponding fresh-keeping service condition is determined according to the kind of information of food, it is fresh-keeping Service condition at least includes the corresponding oxygen concentration range of food species information；The oxygen for obtaining oxygen concentration sensor measurement is dense Degree simultaneously accordingly controls aspiration pump, so that the oxygen concentration of fresh-keeping subspace is maintained in oxygen concentration range.

Alternatively, above-mentioned refrigerating device also includes：Human-computer interaction device, is configured to obtain the food storage of user input Tibetan information；And controller, is also connected with human-computer interaction device, and it is configured to receive the food preservation that human-computer interaction device is obtained Information.

Alternatively, human-computer interaction device includes multiple buttons, is arranged in the cavity wall of fresh-keeping subspace, each button correspondence In a group food, and controller, it is configured to detect the Action Events of multiple buttons；Determine user to many according to Action Events The selection operation of individual button；The corresponding food species of selected button are determined, to obtain food preservation information.

Alternatively, above-mentioned refrigerating device also includes：Open-closed detector, is configured to detect what fresh-keeping subspace was opened and closed Event；And fresh-keeping service condition includes the oxygen concentration upper limit and oxygen concentration lower limit；Controller, is configured to empty in fresh-keeping son Between oxygen concentration be equal to or less than oxygen concentration lower limit when, close aspiration pump；Fresh-keeping subspace oxygen concentration be higher than or During higher than the oxygen concentration upper limit, start aspiration pump；And after it is determined that fresh-keeping subspace is opened, drive aspiration pump and oxygen dense Degree sensor is remained turned-off；After it is determined that fresh-keeping subspace is closed, make oxygen concentration sensor resume work, and drive pumping Pump continuous service is until the oxygen concentration in fresh-keeping subspace is less than or equal to oxygen concentration lower limit.

The refrigerating device and its fresh-keeping control method of the present invention, creatively proposes (such as rich using controlled atmosphere film Oxygen film) oxygen in air in closed fresh-keeping subspace discharged the space by component, lean so as to obtain rich nitrogen in the space Oxygen or other be beneficial to the atmosphere of food fresh-keeping.The atmosphere of such as rich nitrogen oxygen deprivation can be preserved by reducing fruits and vegetables The content of oxygen in space, reduces the intensity of fruit/vegetable aerobic breathing, while ensureing the respiration on basis, prevents fruits and vegetables from carrying out nothing Oxygen is breathed, so as to reach the purpose of fruits and vegetables long-period freshness preserving.Also, the present invention is always according to the species of preserved food, by gas atmosphere Enclose under conditions of being maintained at most beneficial for this kind of food, so as to farthest meet the needs of food storage.

Further, refrigerating device of the invention and its fresh-keeping control method, using physical button or other forms Man Machine Interface obtain food kind of information, it is easy to operate, it is user-friendly.

According to the detailed description below in conjunction with accompanying drawing to the specific embodiment of the invention, those skilled in the art will be brighter Above-mentioned and other purposes, the advantages and features of the present invention.

Description of the drawings

Describe some specific embodiments of the present invention in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter. Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that these What accompanying drawing was not necessarily drawn to scale.In accompanying drawing：

Fig. 1 is the principle schematic of refrigerating device according to an embodiment of the invention；

Fig. 2 is the schematic diagram of refrigerating device according to an embodiment of the invention；

Fig. 3 is the schematic diagram at another visual angle of structure shown in Fig. 2；

Fig. 4 is the schematic local structural graph of refrigerating device according to an embodiment of the invention；

Fig. 5 is the schematic, exploded of structure shown in Fig. 4；

Fig. 6 is the exploded view of controlled atmosphere membrane module in refrigerating device according to an embodiment of the invention；

Fig. 7 is the schematic block diagram of refrigerating device according to an embodiment of the invention；

Fig. 8 is the schematic diagram of the fresh-keeping control method of refrigerating device according to an embodiment of the invention；And

Fig. 9 is that a kind of of the fresh-keeping control method of refrigerating device according to an embodiment of the invention performs flow process.

Specific embodiment

The refrigerating device of the embodiment of the present invention formed in fresh-keeping subspace using controlled atmosphere film meet article storing will Atmosphere is sought, for example, takes oxygen permeable membrane to form the atmosphere of oxygen-enriched lean nitrogen.The operation principle of wherein oxygen permeable membrane is using empty Each component is different through infiltration rate during oxygen permeable membrane in gas, in the case where pressure differential drives, makes oxygen in air preferentially pass through oxygen-enriched Film, in the prior art, oxygen permeable membrane is generally used for preparing oxygen, so as in the field application such as medical treatment, fermentation, burning.At this In bright embodiment, refrigerating device then discharges oxygen using oxygen permeable membrane so that the oxygen concentration of fresh-keeping subspace declines, real The atmosphere for now preserving beneficial to food.

In the present embodiment, controlled atmosphere technology stores the atmosphere (gas componant of closing space residing for thing by adjusting Ratio or gas pressure) mode come extending the technology of shelf life of food products, its general principle is：In certain closing space In (fresh-keeping subspace), obtain being different from the atmosphere of normal air constituent by controlled atmosphere film, to suppress to cause storage thing (logical It is often food) activity of putrid and deteriorated physiological and biochemical procedure and microorganism.Especially, in the present embodiment, the gas for being discussed Tune is fresh-keeping will to be specifically designed in the controlled atmosphere technology being adjusted to gas component ratio.

Those skilled in the art know that normal air constituent includes (pressing volume percentage, hereafter together)：About 78% Nitrogen, about 21% oxygen, about 0.939% rare gas (helium, neon, argon, krypton, xenon, radon), 0.031% carbon dioxide, with And 0.03% other gases and impurity (for example, ozone, nitric oxide, nitrogen dioxide, vapor etc..In controlled atmosphere field, The fresh-keeping gas atmosphere of rich nitrogen oxygen deprivation is obtained generally by the way of nitrogen-rich gas are filled with to closing space to reduce oxygen content Enclose.Those skilled in the art will be appreciated that nitrogen-rich gas refer to that nitrogen content exceedes the gas of nitrogen content in above-mentioned normal air Body, such as nitrogen content therein can be 95%～99%, even more high；And the fresh-keeping atmosphere of rich nitrogen oxygen deprivation refers to nitrogen Content exceedes the atmosphere of nitrogen content, oxygen content less than oxygen content in above-mentioned normal air in above-mentioned normal air.

Although there is also controlled atmosphere technology in prior art, its history can trace back to German biologist in 1821 and send out Existing fruit and vegetable can reduce metabolism in low oxygen level and start.But up to this point, protect due to being conventionally used to controlled atmosphere The fresh equipment of making nitrogen is bulky, with high costs, causes the technology to be substantially also limited to using in various large-scale specialties On storage (typically at least more than 30 tons of storage capacity).Therefore in prior art one in the small-sized refrigerating equipment such as refrigerator As still adopt vacuum freshness retaining technology.

In the present embodiment, by above-mentioned controlled atmosphere membrane module economically by Air-conditioning system miniaturization, mute, so as to be suitable for In the small-sized refrigerating equipment such as refrigerator, its introduction about the construction is as follows：

Fig. 1 is the principle schematic of refrigerating device according to an embodiment of the invention, and Fig. 2 is according to the present invention one The schematic diagram of the refrigerating device of individual embodiment, Fig. 3 is the schematic structure at another visual angle of structure shown in Fig. 2 Figure.As illustrated, embodiments providing a kind of refrigerating device, it may include that casing 20, door body (does not show in figure Go out), controlled atmosphere membrane module 30, aspiration pump 40 and refrigeration system (not shown).Define in the casing 20 of refrigerating device Storage space, the storage space can be configured to refrigerating chamber 27, refrigerating chamber 25, temperature-changing chamber 26 etc. according to cryogenic temperature.Refrigeration is cold It can be the refrigerator at least with refrigerating chamber 27 and refrigerating chamber 25 to freeze device.Refrigeration system can be common compression refrigerating system or half Conductor refrigeration system etc., it provides cold for example, by direct-cooled and/or air-cooled form to storing compartment, so that storing compartment has Desired preservation temperature.In certain embodiments, the preservation temperature of cold compartment of refrigerator 27 can be 2～9 DEG C, or can be 4～7 ℃；The preservation temperature of refrigerating chamber 25 can be -22～-14 DEG C, or can be -20～16 DEG C.Refrigerating chamber 25 is arranged at refrigerating chamber 27 Lower section, temperature-changing chamber 26 is arranged between refrigerating chamber 25 and refrigerating chamber 27.Temperature range in refrigerating chamber 25 is typically at -14 DEG C To -22 DEG C.Temperature-changing chamber 26 can be adjusted according to demand, to store suitable food.

In the present embodiment, closed fresh-keeping subspace 271 is formed with storage space, the fresh-keeping subspace 271 can be with It is arranged in any of the above-described inter-species room, in being preferentially configured at refrigerating chamber 27 and temperature-changing chamber 26.Such as fresh-keeping subspace 271 can be It is arranged on the bottom storage space of refrigerating chamber 27.

Door body may be pivotally mounted to casing 20, be configured to open or close the storage space of the restriction of casing 20.In order to protect The sealing of fresh-keeping subspace 271 is demonstrate,proved, door body inner side is also provided with wicket, to open or close fresh-keeping subspace 271, from And form layer door structure.In some alternative embodiments, the refrigerating device can also be formed using drawer State fresh-keeping subspace 271.Drawer can have drawer cylinder 22 and drawer body 23.Fresh-keeping son is formed using drawer type storing compartment Space 271.

Drawer cylinder 22 has front to opening, and is arranged in storage space (such as bottom of refrigerating chamber 27), drawer sheet Body 23 is slidably mounted on drawer cylinder 22, and the front end of drawer body 23 is provided with end plate, coordinates with drawer cylinder 22, can be with Close the opening of fresh-keeping subspace 271.A kind of specific mode is that drawer body 23 can from the forward direction opening of drawer cylinder 22 Operatively outwards extract out and be pushed home into.End plate causes the closure of openings of fresh-keeping subspace 271 by sealing structure.

In some embodiments of the invention, drawer cylinder 22 can form sealing between the end plate by drawer body 23 Portion, the sealing can suitably gas leakage realize air pressure balance.Can be by drawer cylinder 22 in some other embodiments The modes such as millimetre-sized micropore or check valve are set and ensure air pressure balance.

Refrigeration system can be the cooling cycle system being made up of compressor, condenser, throttling arrangement and evaporimeter etc..Compression Machine is installed in compressor room 24.Evaporimeter is configured to directly or indirectly provide cold into storage space.For example, when this is cold When Tibetan refrigerating plant is family expenses compression direct cooling refrigerator, evaporimeter may be disposed at the rear surface outside or inner side of inner bag 21.When this When refrigerating device is family expenses compression wind cooling refrigerator, also there is evaporator room in casing 20, evaporator room passes through wind path system System is connected with storage space, and evaporimeter is arranged in evaporator room, and exit is provided with blower fan, to be circulated to storage space Refrigeration.Because such refrigeration system is in itself that those skilled in the art are known and be easily achieved, in order to not cover and obscuring this The inventive point of application, does not make more repeating to refrigeration system itself hereinafter.

Controlled atmosphere membrane module 30 has controlled atmosphere film and oxygen rich gas collecting chamber, around the pressure of oxygen rich gas collecting chamber is less than During the pressure of environment, the gas (most of oxygen) of surrounding environment enters controlled atmosphere oxygen rich gas collecting chamber through controlled atmosphere film.Specifically Ground, the opposite side of controlled atmosphere film can contact directly with fresh-keeping subspace 271, or be communicated to the circulatory flow of fresh-keeping subspace 271 (or cyclic space) is contacted, so as to make fresh-keeping subspace in pressure of the pressure of oxygen rich gas collecting chamber less than subspace Controlled atmosphere gas permeation controlled atmosphere film in 271 in air enters oxygen rich gas collecting chamber, in the case of using oxygen permeable membrane, fresh-keeping son The oxygen in space 271 is extracted, so that fresh-keeping subspace 271 forms the atmosphere of oxygen deprivation.

Aspiration pump 40 can be arranged in compressor room 24, and the entrance point of aspiration pump 40 is via pipeline 50 and controlled atmosphere membrane module 30 oxygen rich gas collecting chamber connection, is configured to outwards extract the gas of oxygen rich gas collecting chamber out, so that fresh-keeping subspace 271 Interior at least part of oxygen enters oxygen rich gas collecting chamber by controlled atmosphere film, so as to reduce the oxygen concentration in fresh-keeping subspace. Aspiration pump 40 is configured to extract out gas of the oxygen rich gas collecting chamber rich in oxygen, reduces the oxygen concentration of fresh-keeping subspace 271. To obtain the atmosphere that rich nitrogen oxygen deprivation is beneficial to food fresh-keeping in fresh-keeping subspace 271.

The refrigerating device of the present invention can make to form the gas that rich nitrogen oxygen deprivation is beneficial to food fresh-keeping in fresh-keeping subspace 271 Body atmosphere, the atmosphere reduces the intensity of fruit/vegetable aerobic breathing by the content of oxygen in reduction fruits and vegetables shelf space, while Ensure the respiration on basis, prevent fruits and vegetables from carrying out anaerobic respiration, so as to reach the purpose of fruits and vegetables long-period freshness preserving.And, the gas Body atmosphere also has the gas such as substantial amounts of nitrogen, will not reduce article in subspace by cold efficiency, fruits and vegetables etc. can be made effective To storage.Aspiration pump 40 is arranged in compressor room 24, can make full use of the space of compressor room 24, does not additionally take other ground Side, therefore the additional volumes of refrigerating device will not be increased, the compact conformation of refrigerating device can be made.

In some embodiments of the invention, aspiration pump 40 and compressor can be respectively arranged at the two of compressor room 24 Side, is spaced, so that the distance of the Range compress machine of aspiration pump 40 is distant, reduces noise superposition and used heat superposition.For example, take out Air pump 40 may be disposed at one end that door body pivots side of closing on of compressor room 24.When refrigerating device is side by side combination refrigerator, Aspiration pump 40 may be disposed at the optional position of compressor room 24.In other embodiments of the present invention, aspiration pump 40 can also Neighbouring compressor is arranged, and such as aspiration pump 40 is arranged at one end of compressor room 24, and in compressor and compressor room 24 Between the wall of side.

In some embodiments of the invention, aspiration pump 40 can be installed in seal box, and seal box can be by installing bottom Plate is installed in compressor room 24.Seal box can to a great extent intercept the noise and/or used heat of aspiration pump 40 and outwards propagate.

Fig. 4 is the schematic local structural graph of refrigerating device according to an embodiment of the invention, and Fig. 5 is figure The schematic, exploded of structure shown in 4, controlled atmosphere membrane module 30 may be disposed in the cylinder of drawer cylinder 22, is preferably provided at and takes out The roof of drawer cylinder 22.The accommodating chamber 31 connected with fresh-keeping subspace 271 is specifically provided with the roof of drawer cylinder 22.Take out At least one first passages are offered in wall between the accommodating chamber 31 of the roof of drawer cylinder 22 and fresh-keeping subspace 271 222 and with least one second passages 223 that open up of the interval of at least one first passage 222, with respectively in diverse location Connection accommodating chamber 31 and fresh-keeping subspace 271, accommodating chamber 31 is with fresh-keeping subspace 271 via at least one first intercommunicating pores 222 Connect with least one second intercommunicating pores 223；Controlled atmosphere membrane module 30 is arranged in accommodating chamber 31, can be arranged at least one The top of two intercommunicating pores 223.Accommodating chamber 31 constitutes the cyclic space connected with fresh-keeping subspace 271, so that controlled atmosphere membrane module 30 In controlled atmosphere film 36 contact with the gas in fresh-keeping subspace 271.First intercommunicating pore 222 and the second intercommunicating pore 223 are aperture, And quantity can be multiple.In some alternate embodiments, the roof inner side of the first drawer cylinder 22 has recessed groove.Controlled atmosphere Membrane module 30 is arranged in the recessed groove of the roof of the first drawer cylinder 22.

In some embodiments of the invention, in order to promote fresh-keeping subspace 271 to flow with the gas in accommodating chamber 31, the Blower fan 60 can also be set in the accommodating chamber 31 of one closed component 71, and blower fan 60 is used to form logical via at least one first successively Pore 222, the passage 223 of accommodating chamber 31 and at least one second simultaneously return the air-flow of the fresh-keeping subspace 271, so as to promote The gas of fresh-keeping subspace 271 enters accommodating chamber 31 via the first intercommunicating pore 222, and makes the gas in accommodating chamber 31 via second Intercommunicating pore 223 enters fresh-keeping subspace 271, so as to form the air-flow via controlled atmosphere membrane module 30.

Blower fan 60 is placed in the top that the position of accommodating chamber 31 may be at least one first intercommunicating pores 222, and it promotes to protect The gas of fresh subspace 271 enters accommodating chamber 31 via at least one first intercommunicating pores 222, and makes the gas Jing in accommodating chamber 31 Enter fresh-keeping subspace 271 by least one second intercommunicating pores 223, with by controlled atmosphere membrane module 30 from by separating out in its gas Oxygen.

Blower fan 60 preferably adopts centrifugal blower, can be arranged in gas collection chamber 31 at first intercommunicating pore 222.Namely Say, centrifugal blower 60 is located at the top of at least one first intercommunicating pores 222, and air inlet is right against the first intercommunicating pore 222.Centrifugation The gas outlet of blower fan 60 can be towards controlled atmosphere membrane module 30.At least one second intercommunicating pores 223 can be located under controlled atmosphere membrane module 30 Side.

The roof of the first drawer cylinder 22 includes lower board unit 224 and ceiling plate portion 225, accommodating chamber 31 is limited jointly, for example The upper surface of lower board unit 224 can form recessed groove, and ceiling plate portion 225 is covered on recessed groove, to form accommodating chamber 31.At least one First intercommunicating pore 222 is arranged at roof front portion, and at least one second intercommunicating pores 223 are arranged at roof rear portion.Centrifugal blower 60 sets The front portion of accommodating chamber 31 is placed in, controlled atmosphere membrane module 30 is arranged at the rear portion of accommodating chamber 31.

Controlled atmosphere membrane module 30 has controlled atmosphere film 36 and oxygen rich gas collecting chamber, and the side of controlled atmosphere film 36 is towards oxygen rich gas Collecting chamber, in pressure of the pressure of oxygen rich gas collecting chamber less than the opposite side of controlled atmosphere film 36, to make the another of controlled atmosphere film 36 Oxygen in the air of side enters oxygen rich gas collecting chamber through controlled atmosphere film 36.Specifically, the controlled atmosphere membrane module 30 can be with company Circulatory flow (the i.e. accommodating chamber 31) contact of fresh-keeping subspace 271 is passed to, so as to be less than in the pressure of oxygen rich gas collecting chamber During the pressure of fresh-keeping subspace 271, make oxygen in gas in accommodating chamber 31 (from the fresh-keeping subspace 271) relative to Nitrogen in the surrounding space air-flow of controlled atmosphere membrane module 30 more enters oxygen rich gas collecting chamber through controlled atmosphere film, also will blower fan 60 oxygen formed in air-flow more enter oxygen rich gas collecting chamber relative to nitrogen through controlled atmosphere film.Multiple first closed groups Part 71 can adopt identical structure, specific size to be arranged as required to as identical or different.

Fig. 6 is the exploded view of controlled atmosphere membrane module 30 in refrigerating device according to an embodiment of the invention, controlled atmosphere film Component 30 can be in plate, and the controlled atmosphere membrane module 30 may also include support frame 32.Support frame 32 has for being parallel to each other One surface and second surface, are formed with and extend on the first surface respectively, extend on a second surface, and through support frame To connect multiple gas channels of first surface and second surface, multiple gas channels are collectively forming oxygen rich gas collecting chamber.

Controlled atmosphere film 36 can be two-layer, and the both sides of support frame 32 are layed in respectively, so that closing oxygen rich gas collecting chamber, often Layer controlled atmosphere film 36 can include that one or more controlled atmosphere film layer is folded and be formed.Gas permeation controlled atmosphere film 36 is the process of a complexity, It is through the surface dissolving that mechanism is usually that gas molecule is adsorbed to first controlled atmosphere film 36, then the controlled atmosphere film in controlled atmosphere film 36 Middle dissolving realizes the separation of gas with the difference of diffusion coefficient.Under gas is acted on due to the pressure differential of the both sides of controlled atmosphere film 36, The fast oxygen of infiltration rate is enriched with the per-meate side of controlled atmosphere film 36, so as to converge in oxygen rich gas collecting chamber.

Support frame 32 may include frame, the structure such as the floor being arranged in frame and/or flat board, between floor, floor Gas channel can be formed between flat board etc., can open up fluted on the surface of floor, on the surface of flat board, to form air-flow Passage.Floor and/or flat board can improve structural strength of controlled atmosphere membrane module 30 etc..That is, support frame 32 has mutually Parallel first surface and second surface, and it is internally formed the multiple gas channels connected with first surface and second surface. Two controlled atmosphere films 36 are laid on respectively on the first surface and second surface of support frame 32, with the multiple gas with support frame 32 Jointly closing forms oxygen rich gas collecting chamber to circulation road.

In some embodiments of the invention, support frame 32 includes the aspirating hole connected with aforesaid plurality of gas channel 33, be arranged on frame 32, to allow oxygen rich gas collecting chamber in oxygen be output.Aspirating hole 33 connects with air extractor 41 It is logical.Controlled atmosphere film 36 first passes through double faced adhesive tape 34 and is installed on frame, is then sealed by fluid sealant 35.

In certain embodiments, the aforesaid plurality of gas channel that support frame 32 is internally formed can for one or more with The cavity of the connection of aspirating hole 33.In certain embodiments, the aforesaid plurality of gas channel that support frame 32 is internally formed can have There is network.

Specifically, support frame 32 may include frame, the structure such as the floor being arranged in frame and/or flat board, floor it Between, gas channel can be formed between floor and flat board etc., can open up fluted on the surface of floor, on the surface of flat board, with Form gas channel.Floor and/or flat board can improve structural strength of controlled atmosphere membrane module 30 etc..

Such as support frame 32 has the first surface and second surface being parallel to each other, and support frame 32 is formed with and exists respectively Extend on first surface, extend on a second surface, and through support frame 32 connecting first surface and second surface Multiple gas channels.That is, the plurality of gas channel include extend on the first surface multiple first gas channels, Multiple second gas channels for extending on second surface and through support frame 32 to connect first surface and second surface Multiple 3rd gas channels.Or it is also understood that support frame 32 is formed with multiple first for extending on the first surface Gas channel and multiple second gas channels for extending on a second surface, and between the first gas channel and the second gas channel Connected by the 3rd gas channel.All of gas channel is collectively forming oxygen rich gas collecting chamber.

One or more controlled atmosphere film formed two planar shaped controlled atmosphere film layers, be laid on respectively support frame first surface and On second surface, so as to constitute plate shaped controlled atmosphere membrane module 30.

Support frame 32 is formed with the aspirating hole 33 with said flow channel connection, and the connection oxygen rich gas of aspirating hole 33 is collected Chamber, for connecting the entrance point of aspiration pump 40, so as to allow oxygen rich gas collecting chamber in oxygen rich gas be output.In aspiration pump During 40 operation, negative pressure state is in oxygen rich gas collecting chamber 38, the oxygen in the outside air of controlled atmosphere membrane module 30 can continue Cross controlled atmosphere film 36 to enter in oxygen rich gas collecting chamber.Support frame 32 on the whole can generally rectangular shaped framework.

In certain embodiments, support frame 32 may include：Frame, multiple first floors and multiple second floors.Before State multiple first floors and longitudinally spaced setting and extend transversely, and the side table of aforesaid plurality of first floor inside frame Face forms first surface.Multiple second floors aforesaid plurality of first floor the laterally spaced setting of another side surface and along vertical To extension, and the side surface away from the first floor of aforesaid plurality of second floor forms second surface.That is, aforementioned many Individual second floor is arranged on a side surface of aforesaid plurality of first floor.Aforesaid plurality of first floor and aforesaid plurality of second rib The opposite surface of plate forms respectively first surface and second surface；That is, aforesaid plurality of first floor and aforesaid plurality of second floor Opposite surface forms first surface；The opposite surface of aforesaid plurality of second floor and aforesaid plurality of first floor forms the second table Face.Between between the second floor between the first adjacent floor, adjacent and between adjacent the first floor and the second floor Gap forms aforesaid plurality of gas channel.Wherein, the gap between two the first adjacent floors forms and extends on the first surface The first gas channel, gap between two the second adjacent floors forms the second air-flow for extending on a second surface and leads to Gap between road, adjacent the first floor and the second floor forms and connects first surface and second surface through support frame 32 The 3rd gas channel.That is, the chi structure for being formed by all first floors and all second floors forms aforesaid plurality of air-flow Passage.

Above-mentioned support frame 32 inside its frame by arranging multiple first ribs that are longitudinally spaced and extending transversely Plate and aforesaid plurality of first floor a side surface is laterally spaced and multiple second floors for extending longitudinally, so as to a side Face ensure that the continuity of gas channel, on the other hand greatly reduce the volume of support frame, and significantly enhance The intensity of support frame frame 32.Additionally, the said structure of support frame 32 ensure that controlled atmosphere film 36 is obtained in that enough supports, even if Preferable flatness can be also remained in the case where oxygen rich gas collecting chamber internal negative pressure is larger, it is ensured that controlled atmosphere film group The service life of part 30.

Aspirating hole 33 can be arranged at the horizontal side of frame in the longitudinal middle part of frame.So arrange equivalent to from controlled atmosphere film The middle part pumping of component 30, is conducive to controlled atmosphere film 36 uniformly ventilative.Aspirating hole 33 can be stepped hole shoulder hole in other words, with it When being connected with aspiration pump 40 by flexible pipe, it is ensured that the air-tightness of connecting portion.

Additionally, the said structure of support frame 32 ensure that controlled atmosphere film 36 is obtained in that enough supports, even if oxygen-enriched Also preferable flatness can be remained in the case that gas collection chamber internal negative pressure is larger, it is ensured that controlled atmosphere membrane module 30 Service life.

The inlet end of aspiration pump 40 connects respectively aspirating hole 33 via exhaust pipe 51, to be communicated to multiple first closed groups The oxygen rich gas collecting chamber of the controlled atmosphere membrane module 30 in part 71, and be configured to outwards extract the gas of oxygen rich gas collecting chamber out, So that the oxygen content in fresh-keeping subspace 271 is constantly reduced, it is beneficial to so as to form rich nitrogen oxygen deprivation in fresh-keeping subspace 271 The atmosphere of food fresh-keeping.Aspiration pump 40 can be arranged in compressor room 24, can make full use of the space of compressor room 24, no Additionally take elsewhere, therefore the additional volumes of refrigerating device will not be increased, the structure of refrigerating device can be made tight Gather.

Fig. 7 is the schematic block diagram of refrigerating device according to an embodiment of the invention.The refrigerating device also sets It is equipped with：Controller 110, human-computer interaction device 120, open-closed detector 130, oxygen concentration sensor 140.

Controller 110 is used to be controlled the adjustment of the gas of refrigerating device, according to being protected in fresh-keeping subspace 271 The species of thing of suffering from indigestion carries out gas adjustment, and corresponding control aspiration pump 40 (can also include that the grade of blower fan 60 is used to bypass air through gas Adjust the part of film).Controller 110 is connected with the control end of aspiration pump 40, and its control process can be：Obtain the food of outside input Thing stores information, including at least the kind of information that food is preserved in fresh-keeping subspace 271 in food preservation information.Refrigerating Device can be previously provided with various fresh-keeping operational modes, and (for example fresh-keeping of vegetables, fruit freshness preserving, meat preservation, fish are fresh-keeping Deng).Controller 110 can determine corresponding food fresh-keeping service condition according to the kind of information of food, and fresh-keeping service condition is extremely Less including the corresponding oxygen concentration range of kind of information of food.The fresh-keeping subspace 271 of the measurement of oxygen concentration sensor 140 Oxygen concentration, controller 110 accordingly controls aspiration pump 40 according to oxygen concentration, so that the oxygen concentration of fresh-keeping subspace 271 is protected Hold in the corresponding oxygen concentration range of kind of information of food.

Oxygen concentration sensor 140 is arranged at fresh-keeping subspace 271, and it can select diaphragm type galvanic electricity pool, electricity Polytype oxygen concentration sensors such as chemistry, catalysis burning, constant potential electrolytic, in some alternative embodiments, Can gas analyzer be set in fresh-keeping subspace 271, for measuring the gas content in it, including oxygen content, also may be used With including nitrogen content, carbon dioxide content etc..

Aspiration pump 40 makes the gas of fresh-keeping subspace 271 permeate through controlled atmosphere membrane module 30, with fresh-keeping subspace 271 Beneficial to the atmosphere of food fresh-keeping, its start and stop is controlled by controller 110.

By the research to food fresh-keeping characteristic, inventor has found that oxygen is close with the oxidation of food, respiration Cut is closed, and traditional viewpoint thinks that oxygen concentration is lower, is more conducive to the preservation of food, but through inventor by big measurement The summary of examination draws, traditional viewpoint is simultaneously incorrect, and too low oxygen content also results in the situation that anaerobic respiration occurs in food, Food spoilage is also resulted in, therefore every kind of food has optimal preservation atmosphere.Table 1 shows the optimal of a part of vegetables and fruits The oxygen level of storage ambient：

Table 1

Vegetables and fruits species	Oxygen concentration (unit %)
		Spinach	1
Cabbage	2.5-5
		Wild cabbage	2.5-5
Cauliflower	2.5
		Asparagus	2.5-5
Lettuce	1
		Apple	3
Pears	1
		Tomato	3
Green soya bean	2

It can be seen from Table 1 that, different food has different preferred Conservation environments, therefore in the present embodiment, utilizes Oxygen concentration sensor 140 or other gas analyzing apparatus measure the gas componant in fresh-keeping subspace 271, are driven by controller The corresponding start and stop of aspiration pump 40, needed for thereby may be ensured that atmosphere can be stably maintained at all the time in fresh-keeping subspace 271 Oxygen concentration range in.

Human-computer interaction device 120 can be configured to obtain the food preservation information of user input, and human-computer interaction device 120 can Button, touch-screen, knob etc. are thought, so as to the selection operation for passing through user determines food preservation information.In a kind of optional reality In applying example, human-computer interaction device 120 can be the multiple buttons 121 being arranged in the cavity wall of fresh-keeping subspace 271, each button 121 correspond to a group food, for example, be provided with vegetables selection key, fruit selection key etc..The quantity of button 121 can basis Configured using needs.In some alternative embodiments, these buttons 121 can also configure corresponding pattern and be identified, So that user is operated.

Controller 110 may be configured to detect the Action Events of above-mentioned multiple buttons 121；Determined according to Action Events and used Selection operation of the family to multiple buttons 121；The corresponding food species of selected button 121 are determined, to obtain food preservation letter Breath.After selecting a certain button 121, controller 110 is assured that out corresponding oxygen concentration range to such as user. Oxygen concentration range includes the oxygen concentration upper limit and oxygen concentration lower limit, and the course of work of aspiration pump 40 is：In fresh-keeping subspace When 271 oxygen concentration is equal to or less than oxygen concentration lower limit, aspiration pump 40 is closed；In the oxygen concentration of fresh-keeping subspace 271 During greater than or equal to the oxygen concentration upper limit, start aspiration pump 40.

Because fresh-keeping subspace 271 is after opening every time, original atmosphere all can be destroyed, therefore in fresh-keeping subspace After 271 open be then shut off again, delayed startup aspiration pump 40 is needed.

In the refrigerating device of the present embodiment, open-closed detector 130 can be configured to detect that fresh-keeping subspace 271 is opened Whether the event closed, open-closed detector 130 can be unlocked or be closed using the fresh-keeping subspace 271 of the detection such as hall device, During using drawer type storing compartment as fresh-keeping subspace 271, open-closed detector 130 can be respectively arranged at drawer body 23 On end plate and drawer cylinder 22.

Controller 110 drives aspiration pump 40 and oxygen concentration sensor 140 after it is determined that fresh-keeping subspace 271 is opened Remain turned-off；After it is determined that fresh-keeping subspace 271 is closed, make oxygen concentration sensor 140 resume work, and drive aspiration pump 40 continuous services are until the oxygen concentration in fresh-keeping subspace 271 is less than or equal to oxygen concentration lower limit.

The refrigerating device of the present embodiment is also provided with suggestion device.The suggestion device can be it is determined that fresh-keeping son Space 271 sends the cue for updating the food preservation information after being closed, to remind user to arrange food preservation information. In some alternative embodiments, it is possible to use the button 121 with backlight after for example drawer is opened, is pressed as suggestion device The backlight open of key 121, points out user to re-start selection, to determine the species of food.

Embodiments of the invention additionally provide a kind of fresh-keeping control method of refrigerating device, and the fresh-keeping control method can For carrying out fresh-keeping control to the refrigerating device of above-described embodiment, for example, performed by controller noted above 110, completed gas The holding function of body atmosphere.

Fig. 8 is the schematic diagram of the fresh-keeping control method of refrigerating device according to an embodiment of the invention.The refrigeration The fresh-keeping control method of refrigerating plant may include in general manner：

Step S702, obtains the food preservation information of outside input；

Step S704, according to the kind of information of food corresponding fresh-keeping service condition is determined；

Step S706, obtains the oxygen concentration of the fresh-keeping subspace of the measurement of oxygen concentration sensor 140 and accordingly controls to take out Air pump.

Including at least the kind of information that food is preserved in fresh-keeping subspace 271 in food preservation information in step S702. Fresh-keeping service condition at least includes the oxygen concentration range of the optimal storage ambient of food.In some alternative embodiments, can be with Determine the corresponding oxygen concentration range of multiclass food items beforehand through test, after the food preservation information for receiving input, Corresponding oxygen concentration range can be inquired.

Fresh-keeping service condition includes the oxygen concentration upper limit and oxygen concentration lower limit, and step S706 can be included in it is fresh-keeping When the oxygen concentration of subspace 271 is equal to or less than oxygen concentration lower limit, aspiration pump 40 is closed；In the oxygen of fresh-keeping subspace 271 When gas concentration is greater than or equal to the oxygen concentration upper limit, start aspiration pump 40.

In the case where refrigerating device also includes human-computer interaction device 120, step S702 can utilize man-machine interaction The food preservation information of the receiving user's input of device 120.Include multiple buttons in human-computer interaction device 120, each button correspondence In the case of a group food, the process can be the Action Events of the multiple buttons of detection；Determine user couple according to Action Events The selection operation of multiple buttons；The corresponding food species of selected button are determined, to obtain food preservation information.Man-machine interaction Device 120 can also adopt other kinds of input method, and the mode of above-mentioned button is applied to be carried out on the cylinder 22 of drawer Arrangement.Human-computer interaction device 120 is not intended to limit using the other kinds of part such as keyboard, touch-screen.

In the various events for occurring that the gas leakage of fresh-keeping subspace 271 may be caused, such as upper electricity of refrigerating device In the case of the event that event or fresh-keeping subspace 271 are opened and closed, can also include in the implementation procedure of step S706：Detection Fresh-keeping subspace be opened and closed or other can cause gas leak event；After it is determined that fresh-keeping subspace 271 is opened, driving is taken out Air pump 40 and oxygen concentration sensor 140 are remained turned-off；After it is determined that fresh-keeping subspace 271 is closed, sense oxygen concentration Device 140 is resumed work, and drives the continuous service of aspiration pump 40 until the oxygen concentration in fresh-keeping subspace 271 is less than or equal to oxygen Gas concentration limit.

Can be sent out updating the cue of food preservation information after it is determined that fresh-keeping subspace 271 is closed；And Reacquire the food preservation information of outside input.

The detailed process of the fresh-keeping control method of the refrigerating device of the present embodiment is introduced below, this sentences cold Hide refrigerating plant and be provided with (the above-mentioned guarantors such as fruit preservation condition, leaf vegetables preservation condition, melon preservation condition, meat preservation condition Fresh condition can be configured according to the storage requirement of user), every kind of preservation condition defines various kinds of foods and most preferably preserves oxygen Gas concentration range.For example for cabbage, optimum oxygen concentration range is 2.5-5%.Aspiration pump 40, blower fan 60 and other make Gas carries out start and stop by the oxygen concentration that the part of controlled atmosphere membrane module 30 is measured according to oxygen concentration sensor 140, it is ensured that The oxygen concentration of fresh-keeping subspace 271 is all the time in above-mentioned optimal preservation concentration range.In addition fresh-keeping subspace 271 can be Drawer type storage space.On drawer or indoor four buttons 121 of setting, four buttons can respectively be printed with fruit, leaf Dish, melon, meat sign, correspond to respectively four group foods.

After drawer is opened and is put into certain food, the closure event for occurring in that drawer is detected, button 121 is lit Prompting user selects preservation condition, if user has pressed certain button 121, refrigerating device enters 121 pairs, the button The fresh-keeping pattern answered, if user does not select, refrigerating device can be still according to fresh-keeping mode operation before.

After drawer is closed and door body is also closed, the delay predetermined time of aspiration pump 40 is opened, and continuous service is until make guarantor The oxygen concentration of fresh subspace 271 drops to optimal preservation in concentration range.Then according to the measurement of oxygen concentration sensor 140 As a result start and stop are carried out.It is opened if there is drawer or situation that refrigerator is re-powered then repeats said process.

Fig. 9 is that a kind of of the fresh-keeping control method of refrigerating device according to an embodiment of the invention performs flow process. Refrigerating device is put into after food, and user is selected according to food variety by the button 121 or other modes of interactive device 120 Food type, according to food type preservation condition is determined, every kind of preservation condition includes the preferred oxygen concentration model of the group food Enclose.

In example shown in Fig. 9, according to the different classes of of food, it is divided three classes：Water fruits and vegetables, fresh meat (are mainly deposited Bird meat and the flesh of fish are put, is not suitable for depositing red meat).Wherein the optimum oxygen concentration of fruit be m%, the optimum oxygen concentration of vegetables For n%, the optimum oxygen concentration of fresh meat class is k%, and in general m, n value is less, needs the working time of aspiration pump 40 longer, k Value is larger, needs the working time of aspiration pump 40 shorter.

After aspiration pump 40 is closed, due to the leakage of gas, oxygen concentration can be gradually increasing, and set it and rise to respectively When x%, y%, z%, aspiration pump 40 is needed to be again started up.Oxygen concentration continues to monitor its concentration, is circulated operation.

The control method of three kinds of food qualification categories is illustrate only in Fig. 8, equally, it is also possible to various foods it is fresh-keeping require into Row test, obtains optimal storage condition and corresponding oxygen concentration range, after user is put into food, can be in operation interface Upper input food title, refrigerating device Auto-matching determines corresponding oxygen concentration range, so as to meet the group food Storage request.

The start and stop of above-mentioned aspiration pump 40 are typically synchronous with the start and stop of blower fan 60, the work week of its cycle of operation namely controlled atmosphere film Phase.The present embodiment installs oxygen concentration sensor 140 in fresh-keeping subspace 271, can be with real-time monitoring oxygen concentration, when necessary Concrete numerical value can be in real time shown, button 121 or other input units select food species for user.

The refrigerating device and its fresh-keeping control method of the present embodiment, creatively proposes using controlled atmosphere film (for example Oxygen permeable membrane) the particular kind of gas (such as oxygen) in air in closed fresh-keeping subspace discharged the space by component, from And rich nitrogen oxygen deprivation is obtained in the space or other are beneficial to the atmosphere of food fresh-keeping.The gas atmosphere of such as rich nitrogen oxygen deprivation The content by reducing oxygen in fruits and vegetables shelf space is enclosed, the intensity of fruit/vegetable aerobic breathing is reduced, while ensureing the breathing on basis Effect, prevents fruits and vegetables from carrying out anaerobic respiration, so as to reach the purpose of fruits and vegetables long-period freshness preserving.Also, the present invention is always according to being preserved The species of food, under conditions of atmosphere is maintained at most beneficial for this kind of food, so as to farthest meet food The needs of storage.

So far, although those skilled in the art will appreciate that detailed herein illustrate and describe multiple showing for the present invention Example property embodiment, but, without departing from the spirit and scope of the present invention, still can be direct according to present disclosure It is determined that or deriving many other variations or modifications for meeting the principle of the invention.Therefore, the scope of the present invention is understood that and recognizes It is set to and covers all these other variations or modifications.

Claims

1. a kind of fresh-keeping control method of refrigerating device, the refrigerating device includes defining the case of storage space Body, controlled atmosphere membrane module, aspiration pump and oxygen concentration sensor, wherein, it is empty with closed fresh-keeping son in the storage space Between, the oxygen concentration sensor is arranged in the fresh-keeping subspace, and the aspiration pump is configured to make the storing empty Between the gas of fresh-keeping subspace permeate through the controlled atmosphere membrane module, to be beneficial in the fresh-keeping subspace of the storage space The atmosphere of food fresh-keeping, and the fresh-keeping control method includes：

The food preservation information of outside input is obtained, is included at least in the food preservation information and is protected in the fresh-keeping subspace Suffer from indigestion the kind of information of thing；

Corresponding fresh-keeping service condition is determined according to the kind of information of the food, the fresh-keeping service condition at least includes described The corresponding oxygen concentration range of kind of information of food；

Obtain the oxygen concentration of the described fresh-keeping subspace of the oxygen concentration sensor measurement and accordingly control the aspiration pump, So that the oxygen concentration of the fresh-keeping subspace is maintained in the oxygen concentration range.

2. method according to claim 1, wherein, the refrigerating device also includes：Human-computer interaction device, and obtain The step of food preservation information for taking outside input, also includes：

The food preservation information that receive user is input into by the human-computer interaction device.

3. method according to claim 2, wherein, the human-computer interaction device includes multiple buttons, each described button Corresponding to a group food, and receive user be input into by the human-computer interaction device the food preservation information the step of also Including：

Detect the Action Events of the plurality of button；

Determine selection operation of the user to the plurality of button according to the Action Events；

The corresponding food species of selected button are determined, to obtain the food preservation information.

4. method according to claim 1, wherein,

The fresh-keeping service condition includes the oxygen concentration upper limit and oxygen concentration lower limit, and accordingly controls the step of the aspiration pump Suddenly include：

When the oxygen concentration of the fresh-keeping subspace is equal to or less than the oxygen concentration lower limit, the aspiration pump is closed；

When the oxygen concentration of the fresh-keeping subspace is greater than or equal to the oxygen concentration upper limit, start the aspiration pump.

5. method according to claim 4, wherein, also include during the aspiration pump is accordingly controlled：

Detect the event that the fresh-keeping subspace is opened and closed；

After it is determined that the fresh-keeping subspace is opened, the aspiration pump and the oxygen concentration sensor is driven to remain turned-off；

After it is determined that the fresh-keeping subspace is closed, make the oxygen concentration sensor resume work, and drive the pumping Pump continuous service is until the oxygen concentration in the fresh-keeping subspace is less than or equal to the oxygen concentration lower limit.

6. method according to claim 5, wherein, also include after it is determined that the fresh-keeping subspace is closed：

Send the cue for updating the food preservation information；And reacquire the food preservation information of outside input.

7. a kind of refrigerating device, including：

Casing, limits by storage space in it, and closed fresh-keeping subspace is formed with the storage space；

Controlled atmosphere membrane module, its surrounding space is connected with the fresh-keeping subspace, and is provided with controlled atmosphere film, in the controlled atmosphere membrane module It is formed with oxygen rich gas collecting chamber；

Aspiration pump, its entrance point is communicated to the oxygen rich gas collecting chamber, and is configured to the gas of the oxygen rich gas collecting chamber Body is outwards extracted out, so that at least part of oxygen in the fresh-keeping subspace is received by the controlled atmosphere film into the oxygen rich gas Collection chamber, so as to reduce the oxygen concentration in the fresh-keeping subspace；

Controller, is connected with the control end of the aspiration pump, and is configured to：The food preservation information of outside input is obtained, it is described Including at least the kind of information of the food preserved in the fresh-keeping subspace in food preservation information；According to the kind of the food Category information determines corresponding fresh-keeping service condition, and the fresh-keeping service condition is at least corresponding including the kind of information of the food Oxygen concentration range；Obtain the oxygen concentration of the oxygen concentration sensor measurement and accordingly control the aspiration pump, so that institute The oxygen concentration for stating fresh-keeping subspace is maintained in the oxygen concentration range.

8. refrigerating device according to claim 7, also includes：

Human-computer interaction device, is configured to obtain the food preservation information of user input；And

The controller, is also connected with the human-computer interaction device, and is configured to receive the institute that the human-computer interaction device is obtained State food preservation information.

9. refrigerating device according to claim 8, wherein

The human-computer interaction device includes multiple buttons, is arranged in the cavity wall of the fresh-keeping subspace, each described button pair Ying Yuyi group foods, and

The controller, is configured to detect the Action Events of the plurality of button；Determine the use according to the Action Events Selection operation of the family to the plurality of button；The corresponding food species of selected button are determined, to obtain the food preservation Information.

10. refrigerating device according to claim 7, also includes：

Open-closed detector, is configured to detect the event that the fresh-keeping subspace is opened and closed；And

The fresh-keeping service condition includes the oxygen concentration upper limit and oxygen concentration lower limit；

The controller, is configured to the oxygen concentration in the fresh-keeping subspace and is equal to or less than the oxygen concentration lower limit When, close the aspiration pump；When the oxygen concentration of the fresh-keeping subspace is greater than or equal to the oxygen concentration upper limit, start The aspiration pump；And after it is determined that the fresh-keeping subspace is opened, drive the aspiration pump and oxygen concentration sensing Device is remained turned-off；After it is determined that the fresh-keeping subspace is closed, make the oxygen concentration sensor resume work, and drive institute Aspiration pump continuous service is stated until the oxygen concentration in the fresh-keeping subspace is less than or equal to the oxygen concentration lower limit.