CN103697649B - A kind of temperature-changing chamber has the refrigerator of nitrogen preservation function - Google Patents
A kind of temperature-changing chamber has the refrigerator of nitrogen preservation function Download PDFInfo
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- CN103697649B CN103697649B CN201310721051.9A CN201310721051A CN103697649B CN 103697649 B CN103697649 B CN 103697649B CN 201310721051 A CN201310721051 A CN 201310721051A CN 103697649 B CN103697649 B CN 103697649B
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Abstract
The present invention relates to fresh-keeping refrigerator technical field, more specifically, relate to the refrigerator that a kind of temperature-changing chamber has nitrogen preservation function.Comprise temperature-changing chamber, also comprise gas fractionation unit, aspiration pump, exhaust tube, the first escape pipe and the second escape pipe, described temperature-changing chamber is provided with first interface and the second interface, described exhaust tube connects first interface and aspiration pump, described first escape pipe connects aspiration pump and gas fractionation unit, and the second escape pipe connects gas fractionation unit and the second interface.Aspiration pump is by exhaust tube and the first escape pipe by the air suction gas fractionation unit in temperature-changing chamber, and nitrogen-rich gas is sent into temperature-changing chamber by the second escape pipe by gas fractionation unit, is discharged by oxygen rich gas.The present invention can make food in refrigerator, realize long-term preservation.Overall structure is simple, easy to operate, and the assembly of pressure release simultaneously can carry out pressure release effect before taking-up food, and practical application is strong.
Description
Technical field
The present invention relates to fresh-keeping refrigerator technical field, more specifically, relate to the refrigerator that a kind of temperature-changing chamber has nitrogen preservation function.
Background technology
Refrigerator is the major appliances of terminal use's store food.Along with the development of growth in the living standard and technology, people not only require that the time of food storage becomes longer, and require that food farthest can keep genuine depositing colourity in process, freshness, taste etc.
Refrigerator technology keeping food fresh can use for reference the storage technique of freezer to food to a great extent.From the technical development of freezer, Australian James in 1851 designs and manufactures the 1st mini-type refrigeration compressor and auxiliary equipment has built mechanical cold storage system storehouse, invent air conditioned storage to British scientist Jede, West in 1916, then explore Low-pressure storage to the Midland, MI college professor Burg sixties in 20th century.Therefore, from technology trends, air conditioning technology, vacuum technique are the preservation techniques more advanced than traditional technique of refrigeration.
At present, vacuum freshness retaining technology is widely used in packaging for foodstuff, by the air in airtight package bag/packing container is extracted out, make the pressure in packaging bag/packing container lower than normal pressure (being in vacuum state), the inner microbial growth of effective suppression, the nutritional labeling delaying food is scattered and disappeared, and effectively extends the shelf-life of food.And present stage has refrigerator manufacturer and vacuum freshness retaining technology is used for refrigerator.
Nitrogen preservation belongs to controlled atmosphere technology category, can by artificial adjustment, gas component ratio, temperature, humidity, the air pressure controlled in casing (or storehouse body), delay the metabolism of food, After-ripening (comprising corresponding chemical reaction) to greatest extent, thus keep food quality, color and luster, mouthfeel substantially constant, reach long-term and keep fresh effect.Nitrogen preservation technology utilizes N2 for inert gas, generally not with the characteristic of food generation chemical action, reach the effect extending the food fresh keeping phase.Nitrogen preservation technology is mainly used in frozen products chamber, packaging for foodstuff aspect, does not also have the application of nitrogen preservation technology in refrigerator industry.Even if the improvement that there is association area relates to, but structure is all comparatively complicated, and cost is higher, there is the problems such as gas pressure leak hidden danger, compressive resistance are not high, commercialization difficulty is large.
Summary of the invention
The present invention is for overcoming at least one defect described in above-mentioned prior art, a kind of temperature-changing chamber is provided to have the refrigerator of nitrogen preservation function, the inertia of nitrogen is utilized to carry out fresh-keeping to food, can carry out fresh-keeping to food for a long time, the inner microorganism rope of effective suppression, delay nutrition and the moisture loss of food, and structure is simple, easy to operate.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of temperature-changing chamber is provided to have the refrigerator of nitrogen preservation function, comprise temperature-changing chamber, gas fractionation unit, aspiration pump, exhaust tube, the first escape pipe and the second escape pipe, described temperature-changing chamber is provided with first interface and the second interface, described exhaust tube connects first interface and aspiration pump, described first escape pipe connects aspiration pump and gas fractionation unit, and the second escape pipe connects gas fractionation unit and the second interface;
Aspiration pump is by exhaust tube and the first escape pipe by the air suction gas fractionation unit in temperature-changing chamber, and nitrogen-rich gas is sent into temperature-changing chamber by the second escape pipe by gas fractionation unit, is discharged by oxygen rich gas.
Start aspiration pump, air in temperature-changing chamber is successively by exhaust tube, aspiration pump and the first escape pipe suction gas fractionation unit, gas fractionation unit utilizes gas membrane Seperation Technology to be separated the gas component in air, film is macromolecule membrane that is natural or Prof. Du Yucang, utilize membrane material to have the characteristic of selectively penetrating and diffusion to some gas component, the object of gas separaion can be reached.The fast gas such as steam, oxygen of permeability, first through film, becomes oxygen rich gas, the nitrogen then enrichment because of delay that permeability is slow, becomes nitrogen-rich gas.Oxygen rich gas is discharged by gas fractionation unit, and nitrogen-rich gas sends into temperature-changing chamber through the second escape pipe, and gas circulation is extracted out and sent into repeatedly, and the concentration of nitrogen in temperature-changing chamber just can be made to improve constantly, until meet the requirements, aspiration pump quits work.
In order to reach the effect of compact conformation, the refrigerator that temperature-changing chamber has nitrogen preservation function also comprises fixed block, and gas fractionation unit is fixed on refrigerator backboard by described fixed block, and described first interface and the second interface are all located on refrigerator backboard relevant position.This connected mode makes exhaust tube, the first escape pipe and the second escape pipe arrange on refrigerator neatly, and is located on postnotum and does not affect overall appearance.Because nitrogen is less than atmospheric density, so arrange first interface height lower than the second interface, the nitrogen-rich gas passed into is positioned at above the air of extraction, is convenient to nitrogen-rich gas and is full of temperature-changing chamber.
Further, described gas fractionation unit comprises gas outlet, air after gas fractionation unit is separated is divided into oxygen rich gas and nitrogen-rich gas two parts, pass through gas outlet Exhaust Gas separator to the oxygen rich gas of food fresh-keeping thing effect, another part nitrogen-rich gas enters temperature-changing chamber inside by the second escape pipe.
Further, described temperature-changing chamber comprises casing and door body, and described temperature-changing chamber is also provided with pressure release assembly, described pressure release assembly connect box and door body.Before unlatching is full of the temperature-changing chamber of nitrogen, opens pressure release assembly pressure release is carried out to temperature-changing chamber.Because temperature-changing chamber some gas inner is drawn out of, causes temperature-changing chamber air pressure inside lower than external pressure, form negative pressure, normal temperature-changing chamber door body of opening generally is difficult to open.When user needs the food under taking-up nitrogen preservation environment, could than being easier to the door body opening temperature-changing chamber after needing first to do pressure release process.
Further, described pressure release assembly comprises wireway and pressure release seat, and it is inside and outside that described wireway is communicated with temperature-changing chamber, described wireway comprises outlet nozzle, described pressure release seat connect box and door body, and press seal is outside outlet nozzle, by pressure release seat closure or openness outlet nozzle.Before passing into nitrogen to temperature-changing chamber, pressure release seat closes outlet nozzle, makes temperature-changing chamber be in sealing state; When temperature-changing chamber pass into need to carry out pressure release to temperature-changing chamber after nitrogen time, pressure release seat seat open outlet nozzle, outside air enters temperature-changing chamber inside from wireway, makes temperature-changing chamber internal pressure close to external pressure, is convenient to follow-up unlatching; The contact area of outlet nozzle and pressure release seat is little, only need can open outlet nozzle by little power during pressure release.
Further, be provided with pipe box outside described outlet nozzle, described pipe box is soft rubber, and described pressure release seat comprises the catch base for opening pressure release assembly and the connecting rod for compressing outlet nozzle, described connecting rod is fixedly connected with projection, and this projection and pipe box match.Protruding compression pipe box when catch base seals wireway, the projection on connecting rod removed from pipe box during pressure release, air enters temperature-changing chamber; It is laborsaving and smoothly that the leverage of connecting rod and catch base makes pressure release motion action get up.
Further, described catch base and connecting rod form L shape structure, and connecting rod and temperature-changing chamber door body are rotationally connected, and are connected with temperature-changing chamber box body-sliding simultaneously.When pressure release action, rotate catch base, the connecting rod phase opposite house body be connected with catch base rotates, and the projection in process on connecting rod is removed from the pipe box compressed, and makes air enter temperature-changing chamber from wireway, realizes pressure leak process; Otherwise, then rotate catch base, make the projection on connecting rod be pressed on pipe box, realize the sealing of wireway.
Further, described pressure release assembly also comprises holder, and described holder is fixedly connected on the door body of temperature-changing chamber, and described holder is articulated and connected bar, described connecting rod is fixedly connected with the locating wheel matched with guide runner; The casing of temperature-changing chamber is connected with positioning wedged block, and positioning wedged block is provided with the guide runner matched with locating wheel.In pressure leak process, while rotation catch base, connecting rod rotates relative to temperature-changing chamber door body in hinged place, and locating wheel relative sliding in guide runner, realizes the action that the projection on connecting rod is removed from pipe box simultaneously.
Further, the outside of described connecting rod is provided with handle cover, and described handle cover is fixedly connected with the door body of temperature-changing chamber, and described handle cover is sector structure, and described connecting rod is provided with the umbrella shape groove matched with the sector structure of cover of shaking hands.Described handle cover plays effect firm and attractive in appearance for covering in outside connecting rod, and handle cover is fixed on a body, and beveled structure and umbrella shape fit depressions make catch base in rotation process, drive the motion of connecting rod not limit by shaking hands to cover.
Preferably, described aspiration pump is located in refrigerator compressor warehouse.Make full use of existing space, and do not affect exterior appearance.
Further, in order to make the nitrogen content in temperature-changing chamber reach desirable value, described aspiration pump running time is little equals 5min.
Preferably, in order to make to become the concentration of nitrogen in room higher than more than 85%, need to make the air pressure in temperature-changing chamber reach 0.5 ~ 0.7 atmospheric pressure, or aspiration pump 1.5min ~ 3.5min running time.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention can make food in refrigerator, realize long-term preservation, and keeps quality, color and luster, mouthfeel substantially constant, reduces the problem of growing of bacterium, and slow down the loss of food nutrition and moisture.The present invention utilizes gas fractionation unit effectively oxygen rich gas and nitrogen-rich gas to be exported respectively, ensure that the generation of nitrogen environment, and structure is simple, easy to operate, and the assembly of pressure release simultaneously can carry out pressure release effect before taking-up food, and practical application is strong.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention one overall structure schematic diagram.
Fig. 2 is the embodiment of the present invention two front overall structure schematic diagram.
Fig. 3 is the embodiment of the present invention two pressure release assembly explosive view.
Fig. 4 is opening structure schematic diagram after the pressure release of the embodiment of the present invention two temperature-changing chamber.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is further illustrated.Wherein, accompanying drawing only for exemplary illustration, expression be only schematic diagram, but not pictorial diagram, can not be interpreted as the restriction to this patent; In order to better embodiments of the invention are described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; For a person skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
The corresponding same or analogous parts of same or analogous label in the accompanying drawing of the embodiment of the present invention, in describing the invention, it will be appreciated that, if have term " on ", D score, " left side ", orientation or the position relationship of the instruction such as " right side " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the term of position relationship is described only for exemplary illustration in accompanying drawing, the restriction to this patent can not be interpreted as, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
Embodiment 1
Be illustrated in figure 1 the first embodiment of the present invention, the refrigerator that temperature-changing chamber has a nitrogen preservation function as shown in Figure 1 comprises temperature-changing chamber 1, also comprise gas fractionation unit 2, aspiration pump 3, exhaust tube 4, first escape pipe 5, second escape pipe 6 and fixed block 7, described temperature-changing chamber is provided with first interface 11 and the second interface 12, and said structure is all located at the refrigerator back side.Described exhaust tube 4 connects first interface 11 and aspiration pump 3, first escape pipe 5 connects aspiration pump 3 and gas fractionation unit 2, described second escape pipe 6 connects gas fractionation unit 2 and the second interface 12, and described gas fractionation unit 2 is fixedly connected on refrigerator backboard by fixed block 7.Open aspiration pump 3, air reaches gas fractionation unit by the temperature-changing chamber sealed by exhaust tube 4 and the first escape pipe 5, and described gas fractionation unit comprises gas outlet 21.
Gas fractionation unit 2 utilizes gas membrane Seperation Technology to be separated the gas component in air, film is macromolecule membrane that is natural or Prof. Du Yucang, utilize membrane material to have the characteristic of selectively penetrating and diffusion to some gas component, the object of gas separaion can be reached.The fast gas such as steam, oxygen of permeability, first through film, becomes oxygen rich gas, the nitrogen then enrichment because of delay that permeability is slow, becomes nitrogen-rich gas.Oxygen rich gas is discharged from gas outlet 21 by gas fractionation unit, and nitrogen-rich gas sends into temperature-changing chamber through the second escape pipe.Because nitrogen is less than atmospheric density, so arrange first interface, longitudinally height is lower than the second interface longitudinally height, and aspiration pump running time is 2min, and in temperature-changing chamber, the concentration of nitrogen improves constantly, until higher than more than 85%.
Embodiment 2
As Fig. 2, Fig. 3 and Figure 4 shows that the second embodiment of the present invention, as shown in Figure 3, temperature-changing chamber comprises casing 13 and door body 14, temperature-changing chamber shown in Fig. 2 is also provided with pressure release assembly 8, pressure release assembly connect box and door body, the assembly of pressure release shown in Fig. 3 comprises wireway 81, catch base 82 and connecting rod, described catch base 82 is fixedly connected with connecting rod 83, described catch base and connecting rod form L shape, described wireway 81 is fixed on a body inside, wireway is provided with outlet nozzle 811, described outlet nozzle 811 is communicated with temperature-changing chamber outside, pipe box 84 is provided with outside described outlet nozzle, pipe box is soft rubber, described connecting rod is fixedly connected with projection, described projection and pipe box match, projection is pressed on pipe box, sealing function is realized to wireway.
Described pressure release assembly also comprises holder 85 and positioning wedged block 86, and described holder is fixed on the door body of temperature-changing chamber, and described holder is also hinged with connecting rod; Described positioning wedged block is fixed on the casing of temperature-changing chamber, and positioning wedged block is provided with guide runner 861, and described connecting rod is also fixedly connected with the locating wheel 88 matched with guide runner, locating wheel is slidably connected in guide runner.During pressure release action, rotate catch base, catch base connects connecting rod and rotates relative to holder 85, locating wheel 88 relative sliding in guide runner 861 simultaneously, projection on connecting rod 83 is removed from pipe box 84, wireway and air communication, extraneous air enters temperature-changing chamber inside from wireway, completes pressure release action.Shown pressure release assembly also comprises handle cover 87, described handle cover 87 is located at connecting rod outside and is fixed on a body, described handle cover 87 is sector structure, described connecting rod is provided with the scalloped recess matched with the sector structure of cover of shaking hands, catch base 82 connects sector structure in connecting rod 83 rotation process and rotates in scalloped recess, handle cover ensure that the firm and attractive in appearance of pressure release assembly, temperature-changing chamber after pressure release can easily be opened, pull-up catch base can be opened, and is illustrated in figure 4 the opening of temperature-changing chamber after pressure release.All the other structure and working principle and the embodiment 1 of embodiment duplicate, and no longer describe at this.
Obviously, the above embodiment of the present invention is only for example of the present invention is clearly described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.All any amendments done within the spirit and principles in the present invention, equivalent to replace and improvement etc., within the protection domain that all should be included in the claims in the present invention.
Claims (8)
1. a temperature-changing chamber has the refrigerator of nitrogen preservation function, comprise temperature-changing chamber, it is characterized in that, also comprise gas fractionation unit, aspiration pump, exhaust tube, the first escape pipe and the second escape pipe, described temperature-changing chamber is provided with first interface and the second interface, described exhaust tube connects first interface and aspiration pump, and described first escape pipe connects aspiration pump and gas fractionation unit, and the second escape pipe connects gas fractionation unit and the second interface;
Aspiration pump is by exhaust tube and the first escape pipe by the air suction gas fractionation unit in temperature-changing chamber, and nitrogen-rich gas is sent into temperature-changing chamber by the second escape pipe by gas fractionation unit, is discharged by oxygen rich gas;
Described temperature-changing chamber comprises casing and door body, and described temperature-changing chamber is also provided with pressure release assembly, described pressure release assembly connect box and door body;
Described pressure release assembly comprises wireway and pressure release seat, and it is inside and outside that described wireway is communicated with temperature-changing chamber, and described wireway comprises outlet nozzle, described pressure release seat connect box and door body, and press seal is outside outlet nozzle, by pressure release seat closure or openness outlet nozzle.
2. temperature-changing chamber according to claim 1 has the refrigerator of nitrogen preservation function, it is characterized in that, also comprise fixed block, gas fractionation unit is fixed on refrigerator backboard by described fixed block, described first interface and the second interface are all located on refrigerator backboard relevant position, and described first interface height is lower than the second interface.
3. temperature-changing chamber according to claim 1 has the refrigerator of nitrogen preservation function, it is characterized in that, described gas fractionation unit comprises gas outlet, and after being separated, void gas is discharged from gas outlet.
4. temperature-changing chamber according to claim 1 has the refrigerator of nitrogen preservation function, it is characterized in that, pipe box is provided with outside described outlet nozzle, described pipe box is soft rubber, described pressure release seat comprises the catch base for opening pressure release assembly and the connecting rod for compressing outlet nozzle, described connecting rod is fixedly connected with projection, and described projection and pipe box match.
5. temperature-changing chamber according to claim 4 has the refrigerator of nitrogen preservation function, it is characterized in that, described catch base and connecting rod form L shape structure, and connecting rod and temperature-changing chamber door body are rotationally connected, and is connected with temperature-changing chamber box body-sliding simultaneously.
6. temperature-changing chamber according to claim 5 has the refrigerator of nitrogen preservation function, it is characterized in that, described pressure release assembly also comprises holder, described holder is fixedly connected on the door body of temperature-changing chamber, described holder is articulated and connected bar, described connecting rod is fixedly connected with the locating wheel matched with guide runner; The casing of temperature-changing chamber is connected with positioning wedged block, and positioning wedged block is provided with the guide runner matched with locating wheel.
7. temperature-changing chamber according to claim 6 has the refrigerator of nitrogen preservation function, it is characterized in that, the outside of described connecting rod is provided with handle cover, described handle cover is fixedly connected with the door body of temperature-changing chamber, described handle cover is sector structure, and described connecting rod is provided with the scalloped recess matched with the sector structure of cover of shaking hands.
8. the temperature-changing chamber according to any one of claim 1-7 has the refrigerator of nitrogen preservation function, it is characterized in that, described aspiration pump is less than or equal to 5min running time.
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| CN201310721051.9A CN103697649B (en) | 2013-12-24 | 2013-12-24 | A kind of temperature-changing chamber has the refrigerator of nitrogen preservation function |
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| CN201310721051.9A CN103697649B (en) | 2013-12-24 | 2013-12-24 | A kind of temperature-changing chamber has the refrigerator of nitrogen preservation function |
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| CN103697649A CN103697649A (en) | 2014-04-02 |
| CN103697649B true CN103697649B (en) | 2016-03-09 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674676A (en) * | 2015-12-29 | 2016-06-15 | 青岛海尔股份有限公司 | Fresh-keeping drawer and refrigerator using fresh-keeping drawer |
| CN106642916A (en) * | 2016-12-09 | 2017-05-10 | 青岛海尔股份有限公司 | Refrigerating device |
| CN109737665B (en) * | 2018-11-28 | 2021-10-29 | 海尔智家股份有限公司 | Refrigerating and freezing device |
| CN111846631A (en) * | 2020-07-23 | 2020-10-30 | 合肥即理科技有限公司 | Oxygen-separating preservation device and preservation method thereof |
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| EP2447635A2 (en) * | 2010-10-28 | 2012-05-02 | Sanyo Electric Co., Ltd. | Plug member and low-temperature storage |
| CN103575050A (en) * | 2013-11-15 | 2014-02-12 | 海信容声(广东)冰箱有限公司 | Nitrogen freshness preservation drawer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008020165A (en) * | 2006-07-14 | 2008-01-31 | Tetsuo Owada | Cooling storage |
| JP5792656B2 (en) * | 2012-02-17 | 2015-10-14 | 日立アプライアンス株式会社 | refrigerator |
| CN203687492U (en) * | 2013-12-24 | 2014-07-02 | 海信容声(广东)冰箱有限公司 | Refrigerator with variable-temperature chamber having nitrogen preservation function |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2447635A2 (en) * | 2010-10-28 | 2012-05-02 | Sanyo Electric Co., Ltd. | Plug member and low-temperature storage |
| CN103575050A (en) * | 2013-11-15 | 2014-02-12 | 海信容声(广东)冰箱有限公司 | Nitrogen freshness preservation drawer |
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