CN101726146A - Pressure swing adsorption oxygen-reduction refrigerator - Google Patents
Pressure swing adsorption oxygen-reduction refrigerator Download PDFInfo
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- CN101726146A CN101726146A CN200810230472A CN200810230472A CN101726146A CN 101726146 A CN101726146 A CN 101726146A CN 200810230472 A CN200810230472 A CN 200810230472A CN 200810230472 A CN200810230472 A CN 200810230472A CN 101726146 A CN101726146 A CN 101726146A
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- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention discloses a pressure swing adsorption oxygen-reduction refrigerator comprising a refrigerating chamber and a pressure swing adsorption oxygen-reduction device, wherein the air exhaust end of the pressure swing adsorption oxygen-reduction device is communicated with the refrigerating chamber. The invention reduces oxygen for the refrigerating chamber of the refrigerator by a pressure swing adsorption technology and can more thoroughly separate the oxygen and effectively reduce the concentration of the oxygen inside the refrigerator.
Description
Technical field
The present invention relates to a kind of refrigerator, especially a kind of oxygen that falls is transferred fresh-keeping refrigerator.
Background technology
The Food Science technology has been the science and technology of a maturation, and people have worked out the fresh-keeping science and technology of numerous food product, as vacuum freshness retaining, and controlled atmosphere etc.Food preservative technology has obtained application in large cold storage, usually oxygen content, humidity and carbon dioxide content in cryogenic technique and the control gas is combined, and prolongs the freshness date of food.The refrigerator of listing has adopted preservation by low temperature technology, high humility preservation technique and sterilization fresh-keeping technology now.
Oxygen content in the normal air is nearly 21%, and the content height is unfavorable for food fresh keeping.The oxidation of food, respiration are all closely related in oxygen and the refrigerator.The breathing of food is slow more, and fresh keeping time is long more; The oxidation of food is low more, and the fresh keeping time of food is long more.
Transformation absorption (Pressure Swing Adsorption is called for short PSA) is a kind of new gas adsorption separation technology, and this technology has following advantage: (1) gas separates comparatively thorough.(2) generally can under room temperature and not high pressure, work, need not heat energy saving economy during bed regeneration.(3) equipment is simple, operation, easy maintenance.(4) cycling continuously can reach automation fully.Oxygen is separated the freshness date that will prolong food in refrigerator, improve the preservation quality of food, but also do not have refrigerator to utilize the PSA technology to separate the interior oxygen of refrigerator in the market.
Chinese patent CN86204116 discloses a kind of fresh-keeping device, and this fresh-keeping device is made up of conventional refrigerator and oxygen-eliminating device, and this oxygen-eliminating device is made up of iron pond body, core pipe, carbon-point, electrolyte and bubbling pipe.The phlogistication of the disclosure patent is that the air in the refrigerator feeds electrolyte through gas circulator, be dispersed into tiny bubble by bubbling pipe, air contacts with electrolyte, electrolyte absorption oxygen, become oxidation state by going back ortho states, under galvanic effect, electrolyte is become by oxidation state at negative pole goes back ortho states, at anodal precipitated oxygen, so just reduced by the airborne oxygen concentration after the oxygen-eliminating device processing.The gas of storeroom by getting back to storeroom after the oxygen-eliminating device deoxygenation, carries out continuously deoxidizing in the gas return path of a closure under the effect of gas circulator.The disclosure patent has proposed a kind of scheme that reduces oxygen concentration in the refrigerating chamber, but use what electrolyte less than open, since disclosing, this technology is not applied, also do not see the refrigerator that reduces oxygen concentration in the cold compartment of refrigerator on market, the disclosure patent working difficulty is big.
Chinese patent 200520090453.4 discloses a kind of medical health care oxygen machine with molecular sieve PSA, this device adopts the PSA technical filter to fall airborne nitrogen, absorption is produced the oxygen of high concentration for people's oxygen uptake needs, though this device also is to adopt the PSA technology, but be mainly used in Medical Devices, and adopting the technology of PSA is the oxygen that is used for making high concentration, and we to adopt this technology be to utilize the nitrogen of high concentration to carry out controlled atmosphere to use, mainly be used in cold compartment of refrigerator.
Chinese patent 97217649.7 discloses a kind of oxygen enriched air conditioning device, though what also adopt is the PSA air separation technology, he utilizes the PSA technology to isolate oxygen rich gas the room is carried out oxygenation, and is to be used on the air-conditioner, rather than it is be used on the refrigerator, and also different with our purpose.
More than three patents, the purpose of first and this patent is the same, the technological means that adopts is different, though latter two patents and we adopt same PSA oxygen separation technology, but final purpose is different, purposes is also different.
Summary of the invention
Technical problem to be solved by this invention provides a kind of refrigerator of the PSA of utilization technology, and the oxygen concentration of this refrigerator inside is lower.
For solving the problems of the technologies described above, pressure swing adsorption oxygen-reduction refrigerator of the present invention comprises refrigerating chamber and pressure swing adsorption oxygen-reduction device, and the outlet side of pressure swing adsorption oxygen-reduction device is connected with refrigerating chamber.
As a kind of improvement of the present invention, the outlet side of pressure swing adsorption oxygen-reduction device is connected with refrigerating chamber top and its inlet end is connected with the refrigerating chamber bottom.
As another kind of improvement the of the present invention, the outlet side of pressure swing adsorption oxygen-reduction device is connected with the refrigerating chamber bottom and its inlet end is connected with refrigerating chamber top.
As another kind of improvement the of the present invention, the inlet end of pressure swing adsorption oxygen-reduction device is connected with atmosphere.
As a further improvement on the present invention, described pressure swing adsorption oxygen-reduction device comprises air compressor, solenoid directional control valve and two molecular sieve adsorbers; Solenoid directional control valve includes compressed air inlet, oxygen rich gas outlet and the first molecular sieve adsorber connected entrance, the second molecular sieve adsorber connected entrance, first or the second molecular sieve adsorber connected entrance is selected to be communicated with in the compressed air inlet, and the oxygen rich gas outlet is internally selected to be communicated with the second or first molecular sieve adsorber connected entrance and externally to be connected with atmosphere; The air entry of air compressor is connected with described compressed air inlet as the inlet end and its exhaust outlet that fall the oxygen device, the inlet end of two molecular sieve adsorbers is connected with first, second molecular sieve adsorber connected entrance respectively and its outlet side is communicated with respectively and is provided with check valve, the outlet side of two check valves is connected with cold compartment of refrigerator as the outlet side that falls the oxygen device, and the inlet end of first, second molecular sieve adsorber also is interconnected by pressure-reducing valve.
As a further improvement on the present invention, the exhaust outlet of air compressor is connected with the compressed air inlet of solenoid directional control valve by radiator and check valve successively.
As another kind of improvement the of the present invention, described pressure swing adsorption oxygen-reduction device comprises air compressor, solenoid directional control valve and two molecular sieve adsorbers; Solenoid directional control valve includes compressed air inlet, oxygen rich gas outlet and the first molecular sieve adsorber connected entrance, the second molecular sieve adsorber connected entrance, first or the second molecular sieve adsorber connected entrance is selected to be communicated with in the compressed air inlet, the oxygen rich gas outlet is internally selected to be communicated with the second or first molecular sieve adsorber connected entrance and externally to be connected with the negative pressure pump air entry, and the negative pressure pump exhaust outlet is connected with atmosphere; The air entry of air compressor is connected with described compressed air inlet as the inlet end and its exhaust outlet that fall the oxygen device, the inlet end of two molecular sieve adsorbers is connected with first, second molecular sieve adsorber connected entrance respectively and its outlet side is communicated with respectively and is provided with check valve, and the outlet side of two check valves is connected with cold compartment of refrigerator as the outlet side that falls the oxygen device.
Utilize pressure swing adsorption to come for oxygen falls in cold compartment of refrigerator, oxygen separation is comparatively thorough, can effectively reduce the oxygen concentration in the refrigerator.
The pressure swing adsorption oxygen-reduction device not only has the outlet side to be connected with refrigerating chamber top, and its inlet end also is connected with the refrigerating chamber bottom.So just the source of the gas that falls the oxygen device is changed into refrigerator by atmosphere, and the oxygen concentration in the refrigerator to be lower than the oxygen concentration of atmosphere after use, therefore help the interior oxygen concentration of refrigerator and minimized.Simultaneously, the temperature in the refrigerator is lower than air, falls the oxygen device and refluxes also lowlyer to the temperature of refrigerator, and adopts atmosphere to compare as the source of the gas that falls the oxygen device can to reduce loss of refrigeration capacity, and is comparatively energy-conservation.
It is simple, easily manufactured to fall the oxygen apparatus structure.
Description of drawings
Fig. 1 is the structural representation of embodiment one;
Fig. 2 is the structural representation of embodiment two;
Fig. 3 is the structural representation of embodiment three;
Fig. 4 is the structural representation of embodiment four.
The specific embodiment
Embodiment one
As shown in Figure 1, the pressure swing adsorption oxygen-reduction refrigerator of present embodiment comprises refrigerating chamber 10 and pressure swing adsorption oxygen-reduction device, and the outlet side of pressure swing adsorption oxygen-reduction device is connected with refrigerating chamber 10.
The pressure swing adsorption oxygen-reduction device comprises air compressor 2, radiator 3, solenoid directional control valve 5, blast pipe 9, the first self-drying type molecular sieve adsorber 6, the second self-drying type molecular sieve adsorber 13 and 4,7,12 and pressure-reducing valves 11 of three check valves; Solenoid directional control valve 5 includes compressed air inlet a, oxygen rich gas outlet b and the first molecular sieve adsorber connected entrance c, the second molecular sieve adsorber connected entrance d, compressed air inlet a selects to be communicated with the first or second molecular sieve adsorber connected entrance c, d, and oxygen rich gas outlet b is communicated with the second or first molecular sieve adsorber connected entrance d, c to interior selection and externally is connected with atmosphere by blast pipe 9;
The air entry 1 of air compressor 2 is connected with atmosphere as the inlet end that falls the oxygen device and its exhaust outlet is connected with the compressed air inlet a of solenoid directional control valve 5 by radiator 3 and check valve 4 successively, two molecular sieve adsorbers 6,13 inlet end is respectively with first, the second molecular sieve adsorber connected entrance c, d is connected and its outlet side is communicated with respectively and is provided with check valve 7,12, two check valves 7, be connected first as the outlet side 8 that falls the oxygen device with cold compartment of refrigerator 10 after 12 the outlet side parallel connection, second molecular sieve adsorber 6,13 outlet side is interconnected by pressure-reducing valve 11.
During use, under the effect of air compressor 2, air enters air compressor 2 by air inlet 1, after air compressor 2 compressions, become gases at high pressure, and in radiator 3, unnecessary heat is discharged, gas after the cooling enters the compressed air inlet a of solenoid directional control valve 5 behind check valve 4, two molecular sieve adsorbers 6,13 are serially connected in respectively on the c mouth and d mouth of solenoid directional control valve 5, timing conversion by solenoid directional control valve 5, two self-drying type molecular sieve adsorbers 6,13 air inlet is changed between compressed air inlet a and oxygen rich air gas outlet b respectively: air compressor at first fills gases at high pressure to molecular sieve adsorber 6, oxygen is adsorbed, high pressure nitrogen enters cold compartment of refrigerator by top check valve 7, the part nitrogen-rich gas flows to molecular sieve adsorber 13 through 11 valves that reduce pressure, to molecular sieve adsorber 13 blowback gases; After magnetic valve 5 commutations, air compressor 2 fills gases at high pressure to molecular sieve adsorber 13 again, oxygen is adsorbed, nitrogen-rich gas enters cold compartment of refrigerator through following check valve 12, part nitrogen flows to molecular sieve adsorber 6 through pressure-reducing valve 11 simultaneously, gas in the molecular sieve adsorber 6 is carried out blowback, at this moment molecular sieve adsorber 6 is connected with oxygen rich gas outlet b, gas is near normal pressure in the molecular sieve adsorber 6, under the blowback of nitrogen-rich gas, the oxygen rich gas of molecular sieve adsorber 6 absorption is discharged in the atmosphere from blast pipe 9 through oxygen-enriched air gas outlet b.Circular flow just has nitrogen-rich gas and enters continuously in the cold compartment of refrigerator 10, finally can change the gas componant in the cold compartment of refrigerator 10, forms the nitrogen of high concentration cold compartment of refrigerator 10 in, and the freshness date of prolongation fruits and vegetables reaches the effect of gas preservation.
Embodiment two
As shown in Figure 2, the difference of present embodiment and embodiment one is that the oxygen device that falls of this pressure swing adsorption oxygen-reduction refrigerator also includes negative pressure pump 14, and the outlet side of blast pipe 9 is connected with the air inlet of negative pressure pump 14, and the exhaust outlet of negative pressure pump 14 is connected with atmosphere; The outlet side of first, second molecular sieve adsorber is not connected.
During work, carry out pumpback with the oxygen rich gas of 14 pairs of two molecular sieve adsorbers 6,13 of negative pressure pump and resolve.Because be provided with negative pressure pump 14, correspondingly also the inlet end of two molecular sieve adsorbers 6,13 need not be interconnected by pressure-reducing valve 11.The advantage of present embodiment is more thorough to the parsing of oxygen rich gas, and efficient is higher, can not waste high nitrogen.
Embodiment three
As shown in Figure 3, present embodiment is that with the difference part of embodiment one air entry 1 of air compressor 2 is connected with cold compartment of refrigerator 10 as the inlet end that falls the oxygen device.
During work, circulation between oxygen device and the refrigerating chamber 10 is falling in the air in the cold compartment of refrigerator 10, rather than extracts environmental gas and send into cold compartment of refrigerator 10.Xun Huan advantage is by the gas in the circulation refrigerating chamber 10 like this, can the fastest, farthest improve the nitrogen gas concn in the refrigerating chamber interior 10, has improved the efficient of falling oxygen; Compare with the embodiment one that adopts environmental gas as source of the gas simultaneously, gas source temperature is low, has therefore reduced loss of refrigeration capacity, and is comparatively energy-conservation.
Embodiment four
As shown in Figure 4, present embodiment is that with the difference of implementing two air entry of air compressor 2 is connected with the bottom of cold compartment of refrigerator 10 as the inlet end that falls the oxygen device.Present embodiment has embodiment two concurrently and implements three advantage.
Claims (8)
1. pressure swing adsorption oxygen-reduction refrigerator comprises refrigerating chamber, it is characterized in that: this refrigerator also includes the pressure swing adsorption oxygen-reduction device, and the outlet side of pressure swing adsorption oxygen-reduction device is connected with refrigerating chamber.
2. pressure swing adsorption oxygen-reduction refrigerator according to claim 1 is characterized in that: the outlet side of described pressure swing adsorption oxygen-reduction device is connected with refrigerating chamber top and its inlet end is connected with the refrigerating chamber bottom.
3. pressure swing adsorption oxygen-reduction refrigerator according to claim 1 is characterized in that: the outlet side of described pressure swing adsorption oxygen-reduction device is connected with the refrigerating chamber bottom and its inlet end is connected with refrigerating chamber top.
4. pressure swing adsorption oxygen-reduction refrigerator according to claim 1 is characterized in that: the inlet end of described pressure swing adsorption oxygen-reduction device is connected with atmosphere.
5. according to each described pressure swing adsorption oxygen-reduction refrigerator in the claim 1 to 4, it is characterized in that: described pressure swing adsorption oxygen-reduction device comprises air compressor, solenoid directional control valve and two molecular sieve adsorbers;
Solenoid directional control valve includes compressed air inlet, oxygen rich gas outlet and the first molecular sieve adsorber connected entrance, the second molecular sieve adsorber connected entrance, first or the second molecular sieve adsorber connected entrance is selected to be communicated with in the compressed air inlet, and the oxygen rich gas outlet is internally selected to be communicated with the second or first molecular sieve adsorber connected entrance and externally to be connected with atmosphere;
The air entry of air compressor is connected with described compressed air inlet as the inlet end and its exhaust outlet that fall the oxygen device, the inlet end of two molecular sieve adsorbers is connected with first, second molecular sieve adsorber connected entrance respectively and its outlet side is communicated with respectively and is provided with check valve, the outlet side of two check valves is connected with cold compartment of refrigerator as the outlet side that falls the oxygen device, and the inlet end of first, second molecular sieve adsorber also is interconnected by pressure-reducing valve.
6. pressure swing adsorption oxygen-reduction refrigerator according to claim 5 is characterized in that: the exhaust outlet of described air compressor is connected with the compressed air inlet of solenoid directional control valve by radiator and check valve successively.
7. according to each described pressure swing adsorption oxygen-reduction refrigerator in the claim 1 to 4, it is characterized in that: described pressure swing adsorption oxygen-reduction device comprises air compressor, solenoid directional control valve and two molecular sieve adsorbers;
Solenoid directional control valve includes compressed air inlet, oxygen rich gas outlet and the first molecular sieve adsorber connected entrance, the second molecular sieve adsorber connected entrance, first or the second molecular sieve adsorber connected entrance is selected to be communicated with in the compressed air inlet, the oxygen rich gas outlet is internally selected to be communicated with the second or first molecular sieve adsorber connected entrance and externally to be connected with the negative pressure pump air entry, and the negative pressure pump exhaust outlet is connected with atmosphere;
The air entry of air compressor is connected with described compressed air inlet as the inlet end and its exhaust outlet that fall the oxygen device, the inlet end of two molecular sieve adsorbers is connected with first, second molecular sieve adsorber connected entrance respectively and its outlet side is communicated with respectively and is provided with check valve, and the outlet side of two check valves is connected with cold compartment of refrigerator as the outlet side that falls the oxygen device.
8. pressure swing adsorption oxygen-reduction refrigerator according to claim 7 is characterized in that: the exhaust outlet of described air compressor is connected with the compressed air inlet of solenoid directional control valve by radiator and check valve successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810230472A CN101726146A (en) | 2008-10-17 | 2008-10-17 | Pressure swing adsorption oxygen-reduction refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810230472A CN101726146A (en) | 2008-10-17 | 2008-10-17 | Pressure swing adsorption oxygen-reduction refrigerator |
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| CN101726146A true CN101726146A (en) | 2010-06-09 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106091519A (en) * | 2016-05-31 | 2016-11-09 | 青岛海尔股份有限公司 | Refrigerator |
| CN106419318A (en) * | 2016-11-17 | 2017-02-22 | 天津捷盛东辉保鲜科技有限公司 | Intelligent freshness retaining special cabinet for fruit and vegetable direct selling |
| CN107923695A (en) * | 2015-08-28 | 2018-04-17 | 大金工业株式会社 | Conditioner and include the freezer for container of conditioner in the case in case |
| KR20180133875A (en) * | 2016-06-20 | 2018-12-17 | 칭다오 하이얼 조인트 스탁 씨오.,엘티디. | Refrigeration and freezers |
| DE102013205865B4 (en) * | 2013-04-03 | 2020-07-16 | BSH Hausgeräte GmbH | Container device for a household refrigeration device, household refrigeration device and corresponding method |
| EP3753395A4 (en) * | 2018-02-27 | 2021-03-31 | Daikin Industries, Ltd. | Interior air-conditioning device |
| CN113446796A (en) * | 2020-03-24 | 2021-09-28 | 合肥华凌股份有限公司 | Deoxidization subassembly, storing device and refrigerator |
| CN115507603A (en) * | 2022-09-16 | 2022-12-23 | 澳柯玛股份有限公司 | Nitrogen-making oxygen-collecting fresh-keeping refrigerator and fresh-keeping method |
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2008
- 2008-10-17 CN CN200810230472A patent/CN101726146A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013205865B4 (en) * | 2013-04-03 | 2020-07-16 | BSH Hausgeräte GmbH | Container device for a household refrigeration device, household refrigeration device and corresponding method |
| CN107923695A (en) * | 2015-08-28 | 2018-04-17 | 大金工业株式会社 | Conditioner and include the freezer for container of conditioner in the case in case |
| CN107923695B (en) * | 2015-08-28 | 2019-03-08 | 大金工业株式会社 | Conditioner and the freezer for container including conditioner in the case in case |
| US10966442B2 (en) | 2016-05-31 | 2021-04-06 | Qingdao Haier Joint Stock Co., Ltd. | Refrigerator |
| RU2714760C1 (en) * | 2016-05-31 | 2020-02-19 | Циндао Хайер Джойнт Сток Ко., Лтд. | Refrigerator |
| CN106091519A (en) * | 2016-05-31 | 2016-11-09 | 青岛海尔股份有限公司 | Refrigerator |
| WO2017206556A1 (en) * | 2016-05-31 | 2017-12-07 | 青岛海尔股份有限公司 | Refrigerator |
| KR102157947B1 (en) | 2016-05-31 | 2020-09-21 | 칭다오 하이얼 조인트 스탁 씨오.,엘티디. | Refrigerator |
| EP3467409A4 (en) * | 2016-05-31 | 2019-06-12 | Qingdao Haier Joint Stock Co., Ltd | Refrigerator |
| KR20180130101A (en) * | 2016-05-31 | 2018-12-06 | 칭다오 하이얼 조인트 스탁 씨오.,엘티디. | Refrigerator |
| KR102142203B1 (en) | 2016-06-20 | 2020-08-07 | 칭다오 하이얼 조인트 스탁 씨오.,엘티디. | Refrigerated refrigeration devices |
| AU2017282744B2 (en) * | 2016-06-20 | 2019-09-26 | Qingdao Haier Joint Stock Co., Ltd | Refrigerating and freezing device |
| EP3473956A4 (en) * | 2016-06-20 | 2019-04-24 | Qingdao Haier Joint Stock Co., Ltd | Refrigeration and freezing device |
| KR20180133875A (en) * | 2016-06-20 | 2018-12-17 | 칭다오 하이얼 조인트 스탁 씨오.,엘티디. | Refrigeration and freezers |
| CN106419318A (en) * | 2016-11-17 | 2017-02-22 | 天津捷盛东辉保鲜科技有限公司 | Intelligent freshness retaining special cabinet for fruit and vegetable direct selling |
| EP3753395A4 (en) * | 2018-02-27 | 2021-03-31 | Daikin Industries, Ltd. | Interior air-conditioning device |
| US11419341B2 (en) | 2018-02-27 | 2022-08-23 | Daikin Industries, Ltd. | Inside air control system |
| CN113446796A (en) * | 2020-03-24 | 2021-09-28 | 合肥华凌股份有限公司 | Deoxidization subassembly, storing device and refrigerator |
| CN113446796B (en) * | 2020-03-24 | 2022-08-26 | 合肥华凌股份有限公司 | Deoxidization subassembly, storing device and refrigerator |
| CN115507603A (en) * | 2022-09-16 | 2022-12-23 | 澳柯玛股份有限公司 | Nitrogen-making oxygen-collecting fresh-keeping refrigerator and fresh-keeping method |
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Application publication date: 20100609 |