CN206355797U - Air-separating plant and refrigerating device - Google Patents

Abstract

The utility model provides a kind of air-separating plant and refrigerating device.The air-separating plant includes：Support frame, it forms a support surface with conduit and the enriched gas collecting chamber connected with conduit；And air separation membrane, it is laid on the support surface of support frame, the specific gas being arranged so that in air-separating plant surrounding space air-flow more enter enriched gas collecting chamber relative to other gases therein through air separation membrane.Air-separating plant of the present utility model is by the way that support frame to be particularly designed to the structure with support surface and enriched gas collecting chamber, and the conduit connected with enriched gas collecting chamber is formed on a support surface, and by support surface set air separation membrane so that there is provided a kind of internal gas flow it is good and have some strength air-separating plant.

Description

Air-separating plant and refrigerating device

Technical field

The utility model is related to gas separation technique field, more particularly to a kind of air-separating plant and cold with it Hide refrigerating plant.

Background technology

Refrigerator is to maintain a kind of refrigeration plant of constant low temperature, is also that one kind makes food or other articles keep constant low temperature The product for civilian use of cold conditions.With the raising of quality of the life, consumer is to storing the fresh-keeping requirement of food also more and more higher, especially It is requirement to color and luster, the mouthfeel of food etc. also more and more higher.Therefore, the food of storage should also be as ensureing during storing, food Color and luster, mouthfeel, freshness of thing etc. keep constant as far as possible.

In the preservation technology of refrigerator, the oxidation of food, respiration are all closely related in oxygen and refrigerator.Food Breathing is slower, and the oxidation of food is lower, and fresh keeping time is also longer.The oxygen content in air is reduced, to food fresh keeping With obvious effect.

At present, in order to reduce the content of oxygen in refrigerator, vacuum freshness retaining or extra setting are generally utilized in the prior art It is fresh-keeping that device for deoxidizing carries out hypoxemia.However, the operation of vacuum freshness retaining is typically more cumbersome, using being inconvenient；And device for deoxidizing Deoxygenation generally is carried out using electrolyte etc., device is complex and deaerating effect is not obvious.

Controlled atmosphere technology refers to the atmosphere (gas componant by adjusting closing space residing for storage thing in general manner Ratio or gas pressure) mode extend the technology of shelf life of food products, its general principle is：In certain closing space It is interior, the atmosphere different from normal air constituent is obtained by various regulative modes, to suppress to cause storage thing (usually to eat Material) putrid and deteriorated physiological and biochemical procedure and microorganism activity.Especially, in this application, the controlled atmosphere discussed will Specifically designed in the controlled atmosphere technology that gas component ratio is adjusted.

Those skilled in the art know that normal air constituent includes and (presses 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 neck Domain, generally reduces by the way of oxygen content to obtain the fresh-keeping gas of rich nitrogen oxygen deprivation using being filled with nitrogen-rich gas to closing space Atmosphere.Here, those skilled in the art know, nitrogen-rich gas refer to that nitrogen content exceedes nitrogen content in above-mentioned normal air Gas, 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 gas atmosphere that nitrogen content, oxygen content in above-mentioned normal air are less than oxygen content in above-mentioned normal air Enclose.

Find fruit and vegetable in hypoxemia water although the history of controlled atmosphere technology can trace back to German biologist in 1821 Metabolism can be usually reduced to start.But up to this point, because the equipment of making nitrogen volume for being conventionally used to controlled atmosphere is huge Greatly, it is with high costs, cause the technology to be substantially also limited to use (the storage capacity one on various large-scale professional storages As at least more than 30 tons).It can be said that being only possible to controlled atmosphere economically using which kind of appropriate gas regulation technology and related device System compact, mute, make it be applied to family or personal user, are that controlled atmosphere art personnel thirst for solution always But the technical barrier for the solution that fails all the time.

Utility model content

One purpose of the utility model first aspect is that there is provided a kind of air in view of the foregoing defects the prior art has Separator, to realize that specific gas are separated from air.

The utility model first aspect one is suitable for application in refrigerating device further objective is that to provide one kind Internal air-separating plant, to reduce the specific gas content in refrigerating device storage space.

The utility model first aspect another further objective is that to provide that a kind of small volume, intensity is high and deoxygenation The obvious air-separating plant of effect.

One purpose of the utility model second aspect is intended to overcome at least one defect of current refrigerator, and there is provided one kind is cold Refrigerating plant is hidden, it creatively proposes using air-separating plant the oxygen in air in one space discharging the space, So as to obtain rich nitrogen oxygen deprivation in the space in favor of the atmosphere of food fresh-keeping, the atmosphere is preserved by reducing fruits and vegetables The content of oxygen in space, the intensity of reduction 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.

According to first aspect of the present utility model there is provided a kind of air-separating plant, it includes：

Support frame, it forms a support surface with conduit and the enriched gas collecting chamber connected with the conduit； With

On air separation membrane, the support surface for being laid on the support frame, it is arranged so that the air-separating plant Specific gas in surrounding space air-flow more enter described relative to other gases therein through the air separation membrane Enriched gas collecting chamber.

Alternatively, the support frame includes the aspirating hole connected with the enriched gas collecting chamber, to allow the richness Specific gas in collection gas collecting chamber are output.

Alternatively, the support frame also includes：

Frame, one is limited in it has the accommodating chamber of opening；With

Spaced multiple floors at the opening of the accommodating chamber, wherein

The outer surface of the multiple floor forms the support surface；

Gap between two adjacent floors forms the conduit；

The cavity that the accommodating chamber is on the inside of the multiple floor forms the enriched gas collecting chamber.

Alternatively, the aspirating hole is arranged on the circumferential side of the frame, and the aspirating hole axis be in it is described The vertical of support surface is divided equally on face.

Alternatively, the axis bearing of trend of the aspirating hole is identical with the bearing of trend of the multiple floor.

Alternatively, the inner surface of the axis of the aspirating hole and the multiple floor is in same plane.

Alternatively, the outstanding support surface of the aspirating hole is set；

The aspirating hole and two floors are facing；And the outside table of the neighbouring aspirating hole of two floors Face out lifting and form projection, a flow-guiding channel being aligned with the aspirating hole is convexed to form described in two, to expand described take out The air inflow of stomata.

Alternatively, the surface of the frame opening periphery cave in it is concordant with the support surface, to form installation groove, institute State in the air separation membrane insertion installation groove；

The surface of the opening periphery of the frame further caves in form a ring wire casing on the periphery of the installation groove, For filling with sealant, the air separation membrane is sealably mounted in the installation groove.

Alternatively, the air separation membrane is oxygen permeable membrane, and the specific gas are oxygen.

According to second aspect of the present utility model there is provided a kind of refrigerating device, it includes：

Defined in casing, the casing in storage space, the storage space and be provided with controlled atmosphere space；

Air-separating plant described in foregoing any one；With

Aspiration pump, its entrance point is connected via pipeline with the enriched gas collecting chamber of the air-separating plant, with The gas penetrated in the enriched gas collecting chamber is pumped to the controlled atmosphere outside.

Air-separating plant of the present utility model is by the way that support frame is particularly designed to support surface and enrichment The structure of gas collection chamber, and the conduit connected with enriched gas collecting chamber is formed on a support surface, and by support table Face set air separation membrane so that there is provided a kind of internal gas flow it is good and have some strength air-separating plant.

Further, support frame of the present utility model is at the opening of its accommodating chamber by being arranged at intervals multiple floors, Air separation membrane is arranged on to the outer surface of floor, so as on the one hand ensure that the continuity of gas channel, the opposing party's reduction of area The small volume of support frame, and enhance the intensity of support frame.In addition, the said structure of support frame ensure that air Seperation film results in enough supports, can also be protected all the time in the case that enriched gas collecting chamber internal negative pressure is larger Hold preferable flatness, it is ensured that the service life of air-separating plant.

Further, the utility model has carried out special design by the position to aspirating hole, so as to expand pumping The air inflow in hole, adds the gas conductivity of air-separating plant, so as to be substantially reduced the volume of enriched gas collecting chamber, favorably In the miniaturization of air-separating plant.

Further, the utility model installs groove and loop wire groove by being formed on the frame of support frame, so as to Realize by air separation membrane it is convenient, fast, be reliably mounted on framework, and ensure that the air-tightness of air-separating plant.

According to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will be more Plus understand of the present utility model above-mentioned and other purposes, advantages and features.

Brief description of the drawings

It is described in detail by way of example, and not by way of limitation with reference to the accompanying drawings hereinafter more of the present utility model specific real Apply example.Identical reference denotes same or similar part or part in accompanying drawing.It should be appreciated by those skilled in the art that What these accompanying drawings were not necessarily drawn to scale.In accompanying drawing：

Fig. 1 is the schematic diagram of the air-separating plant according to the utility model one embodiment；

Fig. 2 is the schematic cross sectional views of air-separating plant shown in Fig. 1；

Fig. 3 is the schematic, exploded of air-separating plant shown in Fig. 1；

Fig. 4 is the enlarged diagram of the a-quadrant in Fig. 3；

Fig. 5 is the schematic layout structure chart of the refrigerating device according to the utility model one embodiment；

Fig. 6 is the schematic diagram of the refrigerating device shown in Fig. 5 from another angle；

Fig. 7 is the schematic local structural graph of the refrigerating device according to the utility model one embodiment；

Fig. 8 is the schematic, exploded of structure shown in Fig. 7.

Embodiment

Fig. 1 is the schematic diagram of the air-separating plant 100 according to the utility model one embodiment；Fig. 2 is Fig. 1 The schematic cross sectional views of shown air-separating plant 100；Fig. 3 is the schematic, exploded of air-separating plant 100 shown in Fig. 1； Fig. 4 is the enlarged diagram of the a-quadrant in Fig. 3.Referring to Fig. 1 to Fig. 4, according to the air-separating plant of the utility model embodiment 100 may include in general manner：Support frame 110 and the air separation membrane 120 being arranged in support frame 110.Support frame 110 Form a support surface with conduit 1103 and the enriched gas collecting chamber connected with conduit 1103.Air separation membrane 120 is spread On the support surface for being located at support frame 110, it is arranged so that the specific gas in the surrounding space air-flow of air-separating plant 100 More enter enriched gas collecting chamber through air separation membrane 120 relative to other gases therein.

In some embodiments of the present utility model, air separation membrane 120 be able to can all permeate to all gas, simply Gas with various has different penetration degrees.Gas permeation air separation membrane 120 is a complicated process, and it passes through mechanism one As be gas molecule be adsorbed to first air separation membrane 120 surface dissolving, then in air separation membrane 120 spread, most The opposite side from air separation membrane 120 is desorbed afterwards.Membrane separation technique dissolves by gas with various in air separation membrane 120 The separation of gas is realized with the difference of diffusion coefficient.When mixed gas is in certain driving force (pressure of air separation membrane both sides Power difference or pressure ratio) effect under, the quickish gas of infiltration rate (i.e. foregoing specific gas) transmission air separation membrane 120 after, It is enriched with the per-meate side of air separation membrane 120, and the relatively slow gas of infiltration rate is trapped in the stagnant of air separation membrane 120 Side is stayed by enrichment to reach the purpose of mixed gas separation.

In a preferred embodiment, air separation membrane 120 can be oxygen permeable membrane, correspondingly, and foregoing specific gas are oxygen. In alternate embodiment, air separation membrane 120 or this area are commonly used in the seperation film for separating other gases.

In certain embodiments, the support frame 110 of air-separating plant 100 may include：Aspirating hole 101, itself and enrichment Gas collection chamber is connected, to allow the specific gas in enriched gas collecting chamber to be output.Enriched gas collecting chamber can be by taking out Stomata 101 is connected with aspiration pump, and foregoing specific gas are output from enriched gas collecting chamber.As enriched gas is collected Enriched gas in chamber is output, and negative pressure state, therefore the outside air of air-separating plant 100 are in enriched gas collecting chamber In specific gas can continue through air separation membrane 120 enter enriched gas collecting chamber in.

In certain embodiments, the support frame 110 of air-separating plant 100 may also include：Frame 102 and multiple floors 1102.One is limited in frame 102 has the accommodating chamber 1101 of opening.Multiple floors 1102 are at the foregoing opening of accommodating chamber 1101 It is arranged at intervals.The outer surface formation of multiple floors 1102 is previously used for laying the support surface of air separation membrane 120；Two phases Gap between adjacent floor 1102 forms the conduit 1103 of foregoing support surface.Accommodating chamber 1101 is in aforesaid plurality of floor The cavity of 1102 inner sides forms the enriched gas collecting chamber.

Air separation membrane 120 is arranged on the outer surface of aforesaid plurality of floor 1102.Those skilled in the art will appreciate that , the inner surface of aforesaid plurality of floor 1102 is floor 1102 towards a side surface of accommodating chamber 1101 floor in other words 1102 side surfaces away from foregoing opening；The outer surface of aforesaid plurality of floor 1102 is floor 1102 away from accommodating chamber 1101 side surface in other words floor 1102 towards a side surface of foregoing opening.The utility model is by by air separation membrane 120 are arranged on the outer surface of multiple floors 1102, so that support frame 110 is played preferably to air separation membrane 120 Supporting role, is conducive to making air separation membrane 120 keep preferable flatness；And there is provided a kind of internal gas flow it is good and Air-separating plant 100 with some strength.

In certain embodiments, the surface of the opening of frame 102 periphery is caved in the outside table with aforesaid plurality of floor 1102 Face is concordant, so as to be collectively forming installation groove 114, the insertion of air separation membrane 120 is installed in groove 114.The opening week of frame 102 The surface of edge further caves in form a ring wire casing 115 on the periphery for installing groove 114, for filling with sealant 130, will Air separation membrane 120 is sealably mounted in installation groove 114.The utility model passes through on the frame 102 of support frame 110 Formed and groove 114 and loop wire groove 115 be installed, thus can realize by air separation membrane 120 it is convenient, fast, be reliably mounted on branch On support frame frame 110, and the air-tightness of air-separating plant 100 is ensure that, make to form enough inside and outside air separation membrane 120 Pressure differential.When the air-separating plant 100 of the utility model embodiment is fresh-keeping middle for refrigerator food, fluid sealant will ensure food Rank test, that is, ensure that fluid sealant does not produce peculiar smell and noxious volatile material.

In certain embodiments, referring to Fig. 3, in order to further facilitate installation, first air can be divided with a circle double faced adhesive tape 140 Pre-fixed from film 120 in groove 114 is installed, fluid sealant 130 is enclosed in filling one in loop wire groove 115 afterwards, and air is separated Film 120 is sealably mounted in installation groove 114.

In certain embodiments, the outer surface of floor 1102 edge formation chamfering, so as to reduce floor 1102 with Contact area between air separation membrane 120, further enhances the gas fluidity inside enriched gas collecting chamber.

In certain embodiments, aspirating hole 101 is arranged on the circumferential side of frame 102.Those skilled in the art should manage Solution, " circumferential side " herein is the perpendicular any side of plane residing for the opening with accommodating chamber 1101 of frame 102 Circumferential side wall.In such embodiments, the outside table of the axis of aspirating hole 101 and foregoing support surface floor 1102 in other words Face is parallel.Further, the axis of aspirating hole 101 is in the vertical of support surface and divided equally on face." vertically dividing face equally " herein Plane that is as vertical with support surface and dividing support surface equally.I.e. aspirating hole 101 is arranged on the circumferential side of frame 102 Middle part, is so provided with and is uniformly breathed freely beneficial to each several part of air separation membrane 120.

Multiple floors 1102 are preferably set at equal intervals, and bearing of trend is identical.In certain embodiments, aspirating hole 101 Axis bearing of trend is identical with the bearing of trend of aforesaid plurality of floor 1102.Also imply that the conduit 1103 of support surface with taking out The axis bearing of trend of stomata 101 is identical.In this way, being conducive to the gas entered in conduit 1103 to rapidly flow toward aspirating hole 101, so as to accelerate the air circulation inside enriched gas collecting chamber, and then be conducive to improving the gas of air-separating plant 100 The rate of departure.

Referring to Fig. 4, aspirating hole 101 can outstanding foregoing support surface setting.Aspirating hole 101 and aforesaid plurality of floor Two floors 1102 in 1102 are facing.That is, the cross section of aspirating hole 101 is perpendicular to the axis of aspirating hole 101 The cross section of any of projected outline and two floors 1102 in plane is in the plane perpendicular to the axis of aspirating hole 101 On projected outline at least partly overlap.The outside lifting of outer surface of the neighbouring aspirating hole 101 of two floors 1102 is formed Projection 1104, the flow-guiding channel that two formation of projection 1,104 one is aligned with aspirating hole 101, to expand the air inflow of aspirating hole 101. In such embodiments, two projections 1104 raise the respective regions of air separation membrane 120, so that in the outside of floor 1102 The gas channel connected with aspirating hole 101 is formed, gas conductivity is further increased.In such embodiments, accommodating chamber 1101 Bottom wall and floor 1102 inner surface between spacing settable to obtain very little, it is only necessary to some spaces.Therefore, can be significantly The volume of enriched gas collecting chamber is reduced, is conducive to the miniaturization of air-separating plant 100.

Aspirating hole 101 can be stepped hole shoulder hole in other words, with when it is connected by flexible pipe with aspiration pump, it is ensured that connection The air-tightness at position.

In an alternative embodiment, the bearing of trend of aforesaid plurality of floor 1102 can also extend with the axis of aspirating hole 101 Direction forms angle.

In the utility model embodiment, because the special construction of support frame 110 can ensure that it has enough intensity, Therefore support frame 110 can be made of plastics.The air-separating plant 100 of the utility model embodiment is mainly used in realizing air The separation of component, when air separation membrane 120 elects oxygen permeable membrane as, oxygen in air can be adjusted by the air-separating plant 100 The content of gas or nitrogen or carbon dioxide, and then applied to different application scenarios (for example；Oxygen-enriched environment；Lung ventilator is fresh Keep-alive or heavy-oxygen-enriched water etc., low-oxygen environment；Controlled atmosphere or fire-retardant environment；Rich nitrogen environment；Carbon dioxide enriched environment etc.).Due to this The small volume of air-separating plant 100 of utility model embodiment, therefore it is very suitable for the food fresh keeping for refrigerator.

Therefore, the utility model additionally provides a kind of refrigerating device.Fig. 5 is according to the utility model one embodiment Refrigerating device schematic diagram, Fig. 6 is the schematic knot of the refrigerating device shown in Fig. 5 from another angle Composition；Fig. 7 is the schematic local structural graph of the refrigerating device according to the utility model one embodiment；Fig. 8 is Fig. 7 institutes Show the schematic, exploded of structure.As shown in Fig. 5 to Fig. 8, the refrigerating device of the utility model embodiment may include casing 200th, door body (not shown), air-separating plant 100, aspiration pump 41 and refrigeration system.

Storage space 211 and compressor bin 240 are defined in casing 200.Specifically, casing 200 may include inner bag 210, Storage space 211 is limited in inner bag 210.Door body is pivotally mounted to casing 200, is configured to open or close casing 200 and limits Fixed storage space 211.Further, being provided with storage space 211 in container for storing, container for storing has controlled atmosphere empty Between.Controlled atmosphere space can be hermetic type space or approximate hermetic type space.Container for storing is preferably drawer appliance.Container for storing It may include drawer cylinder 220 and drawer body 230.Drawer cylinder 220 can be with preceding to opening, and is arranged at storage space 211 It is interior.Drawer body 230 is slidably disposed in drawer cylinder 220, operationally outside with the forward direction opening from drawer cylinder 220 Extract and be inwardly inserted into drawer cylinder 220 out.

Refrigeration system can be the cooling cycle system being made up of compressor, condenser, throttling arrangement and evaporator etc..Compression Machine is mountable in compressor bin 240.Evaporator is configured to directly or indirectly provide cold into storage space 211.

The surrounding space of air-separating plant 100 is connected with controlled atmosphere space.Oxygen in the air in controlled atmosphere space More enriched gas collecting chamber can be entered through air separation membrane 120 relative to nitrogen therein.Aspiration pump 41 may be disposed at In compressor bin 240, to make full use of the space of compressor bin 240.Aspiration pump 41 does not take elsewhere additionally, therefore will not increase The additional volumes of big refrigerating device, can make the compact conformation of refrigerating device.The entrance point of aspiration pump 41 is via pipeline 50 are connected with the enriched gas collecting chamber of air-separating plant 100, and the gas penetrated in enriched gas collecting chamber is pumped to Outside container for storing.

In this embodiment, aspiration pump 41 is outwards evacuated, and the pressure of enriched gas collecting chamber can be made to be less than air and separate dress The pressure of 100 surrounding space is put, further, the oxygen in the surrounding space of air-separating plant 100 can be made to enter enriched gas Body collecting chamber.Because controlled atmosphere space is connected with the surrounding space of air-separating plant 100, the air meeting in controlled atmosphere space The surrounding space of air inlet separator 100, therefore the oxygen in the air in controlled atmosphere space is entered enriched gas Body collecting chamber, so as to obtain rich nitrogen oxygen deprivation in controlled atmosphere space in favor of the atmosphere of food fresh-keeping.

In certain embodiments, as shown in Figure 7 and Figure 8, air-separating plant 100 may be disposed at the cylinder of drawer cylinder 220 On body wall, the roof of drawer cylinder 220 preferably horizontally be arranged at.Specifically, it is provided with appearance in the roof of drawer cylinder 220 Chamber 221 is received, to house air-separating plant 100.Wall between the accommodating chamber 221 of drawer cylinder 220 and controlled atmosphere space On offer at least one first passage 222 and at least one second passage 223 connected with accommodating chamber 221.First leads to Stomata 222 is spaced apart with the second passage 223, with respectively in diverse location connection accommodating chamber 221 and controlled atmosphere space.First The passage 223 of passage 222 and second is aperture, and quantity can be multiple.

In certain embodiments, in order to promote controlled atmosphere space to be flowed with the gas in accommodating chamber 221, refrigerating dress Put and may also include blower fan 60, be arranged in accommodating chamber 221, be configured to promote the gas in controlled atmosphere space via the first passage 222 enter accommodating chamber 221, and the gas in accommodating chamber 221 is entered controlled atmosphere space via the second passage 223.Blower fan 60 be preferably centrifugal blower, is arranged in accommodating chamber 221 at first passage 222.That is, centrifugal blower is located at least one The top of individual first passage 222, and air inlet is right against the first passage 222.The gas outlet of centrifugal blower can be towards air Separator 100.Air-separating plant 100 is arranged at the top of at least one the second passage 223 and causes air separation dress The roof of 100 air separation membrane 120 parallel to cylinder 22 is put, wherein air separation membrane 120 can be set towards controlled atmosphere space Put.First passage 222 may be disposed at roof front portion, and the second passage 223 may be disposed at roof rear portion.That is, centrifugal blower is set The front portion of accommodating chamber 221 is placed in, air-separating plant 100 is arranged at the rear portion of accommodating chamber 221.Further, drawer cylinder 220 Roof may include main board portion 224 and ceiling plate portion 225, the upper surface of main board portion 224 forms recessed groove, and ceiling plate portion 225 is covered on Recessed groove is to form accommodating chamber 221.

So far, although those skilled in the art will appreciate that herein it is detailed have shown and described it is of the present utility model many Individual exemplary embodiment, still, still can be public according to the utility model in the case where not departing from the utility model spirit and scope The content opened directly determines or derived many other variations or modifications for meeting the utility model principle.Therefore, this practicality is new The scope of type is understood that and regarded as to cover other all these variations or modifications.

Claims (10)

1. a kind of air-separating plant, it is characterised in that including：

Support frame, it forms a support surface with conduit and the enriched gas collecting chamber connected with the conduit；With

On air separation membrane, the support surface for being laid on the support frame, it is arranged so that around the air-separating plant Specific gas in the air-flow of space more enter the enrichment relative to other gases therein through the air separation membrane Gas collection chamber.

2. air-separating plant according to claim 1, it is characterised in that

The support frame includes the aspirating hole connected with the enriched gas collecting chamber, to allow the enriched gas collecting chamber In specific gas be output.

3. air-separating plant according to claim 2, it is characterised in that the support frame also includes：

Frame, one is limited in it has the accommodating chamber of opening；With

Spaced multiple floors at the opening of the accommodating chamber, wherein

The outer surface of the multiple floor forms the support surface；

Gap between two adjacent floors forms the conduit；

The cavity that the accommodating chamber is on the inside of the multiple floor forms the enriched gas collecting chamber.

4. air-separating plant according to claim 3, it is characterised in that

The aspirating hole is arranged on the circumferential side of the frame, and the axis of the aspirating hole is in hanging down for the support surface Directly divide equally on face.

5. air-separating plant according to claim 4, it is characterised in that

The axis bearing of trend of the aspirating hole is identical with the bearing of trend of the multiple floor.

6. air-separating plant according to claim 5, it is characterised in that

The inner surface of the axis of the aspirating hole and the multiple floor is in same plane.

7. air-separating plant according to claim 6, it is characterised in that

The outstanding support surface of aspirating hole is set；

The aspirating hole and two floors are facing；And the outer surface of the neighbouring aspirating hole of two floors to Outer lifting forms projection, and a flow-guiding channel being aligned with the aspirating hole is convexed to form described in two, to expand the aspirating hole Air inflow.

8. air-separating plant according to claim 3, it is characterised in that

The surface of the frame opening periphery cave in it is concordant with the support surface, to form installation groove, the air separation In the film insertion installation groove；

The surface of the opening periphery of the frame further caves in form a ring wire casing on the periphery of the installation groove, is used for Filling with sealant, the air separation membrane is sealably mounted in the installation groove.

9. air-separating plant according to any one of claim 1 to 8, it is characterised in that the air separation membrane is Oxygen permeable membrane, the specific gas are oxygen.

10. a kind of refrigerating device, it is characterised in that including：

Defined in casing, the casing in storage space, the storage space and be provided with controlled atmosphere space；

Air-separating plant according to claim 9, its surrounding space is connected with the controlled atmosphere space；With

Aspiration pump, its entrance point is connected via pipeline with the enriched gas collecting chamber of the air-separating plant, will be saturating Enter the gas in the enriched gas collecting chamber and be pumped to the controlled atmosphere outside.