JPH0342862B2 - - Google Patents
Info
- Publication number
- JPH0342862B2 JPH0342862B2 JP12203982A JP12203982A JPH0342862B2 JP H0342862 B2 JPH0342862 B2 JP H0342862B2 JP 12203982 A JP12203982 A JP 12203982A JP 12203982 A JP12203982 A JP 12203982A JP H0342862 B2 JPH0342862 B2 JP H0342862B2
- Authority
- JP
- Japan
- Prior art keywords
- storage
- oxygen concentration
- nitrogen
- enriched air
- atmosphere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 65
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 45
- 239000001301 oxygen Substances 0.000 claims description 45
- 229910052760 oxygen Inorganic materials 0.000 claims description 45
- 229910052757 nitrogen Inorganic materials 0.000 claims description 30
- 238000001179 sorption measurement Methods 0.000 claims description 19
- 235000013399 edible fruits Nutrition 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 235000013311 vegetables Nutrition 0.000 claims description 14
- 230000007774 longterm Effects 0.000 claims description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 3
- 229910001882 dioxygen Inorganic materials 0.000 claims description 3
- 238000007710 freezing Methods 0.000 claims description 3
- 230000008014 freezing Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 7
- 239000003463 adsorbent Substances 0.000 description 5
- 238000003795 desorption Methods 0.000 description 5
- 229910001873 dinitrogen Inorganic materials 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 241000227653 Lycopersicon Species 0.000 description 4
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 4
- 235000013305 food Nutrition 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000029058 respiratory gaseous exchange Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002808 molecular sieve Substances 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Landscapes
- Storage Of Fruits Or Vegetables (AREA)
- Storage Of Harvested Produce (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
Description
【発明の詳細な説明】
本発明は穀物や野菜、果物の貯蔵庫に係り、特
に自己生理作用や有害微生物の発生を抑制して長
期間保存するに好適な雰囲気調整方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to storage of grains, vegetables, and fruits, and more particularly to an atmosphere adjustment method suitable for long-term storage while suppressing self-physiological effects and the generation of harmful microorganisms.
一般に野菜、果物などの生鮮食品の鮮度低下や
腐敗劣化は収穫後も引続き行なわれる呼吸作用、
有害微生物の発生などによつて生じ、鮮度を維持
したままの長期保存を困難にしている。対策の１
つとして温度調節がある。温度を低下させること
によつて呼吸作用、有害微生物の発生を抑制する
方法があるが、温度を下げ過ぎると低温障害が起
るため、通常０〜５℃の範囲が限界で、温度調節
だけでの鮮度維持には限界があつた。別な方法と
して、温度調節に加えて酸素濃度を調節し、呼吸
作用を抑制することにより鮮度維持を図る方法が
ある。これは、酸素濃度を呼吸作用が停止されな
い程度、一般に２ないし10％の範囲に調整して鮮
度維持を図るもので、温度調節と組み合わせるこ
とによつて、保存期間を大巾に延長することがで
きる（空気調和と冷凍；９−1980，p130〜133）。 In general, the loss of freshness and deterioration of fresh foods such as vegetables and fruits is due to the respiratory action that continues even after harvest.
This is caused by the occurrence of harmful microorganisms, making it difficult to preserve food for long periods of time while maintaining its freshness. Countermeasure 1
One of them is temperature control. There is a way to suppress respiratory effects and the generation of harmful microorganisms by lowering the temperature, but if the temperature is lowered too much, low temperature injury will occur, so the range of 0 to 5 degrees Celsius is usually the limit, and temperature control alone is not enough. There was a limit to how fresh it could be maintained. Another method is to maintain freshness by regulating oxygen concentration in addition to temperature regulation and suppressing respiration. This is to maintain freshness by adjusting the oxygen concentration to a level that does not stop respiration, generally in the range of 2 to 10%.When combined with temperature control, the storage period can be greatly extended. (Air conditioning and refrigeration; 9-1980, p130-133).
上記、酸素濃度を調整する方法としては、従来
窒素ガスの供給が知られている。これは、液体窒
素タンクを用意し、貯蔵庫内の酸素濃度が高くな
つた場合には液体窒素を気化させて供給し、酸素
濃度を調整するものである。この方法は容易に実
施可能であるが、問題点として、(1)沸点が−197
℃と低い液体窒素を使用するため高価な容器及び
気化器を必要とする、(2)液体窒素の蒸気圧が高い
ために操作圧力が高くなる、(3)液体窒素を購入、
搬入して使用するため維持管理が面倒である、(4)
窒素ガスの供給量の調節を誤まると庫内の酸素濃
度が限界値以下になる恐れがある、などが挙げら
れる。液体窒素の替りにボンベからの窒素ガスを
供給する方法が考えられるが、重量が大きな高圧
容器を取扱うこと、窒素ガスのコストが高いこと
などから実用化が難しい。 As a method for adjusting the oxygen concentration, supplying nitrogen gas is conventionally known. This involves preparing a liquid nitrogen tank, and when the oxygen concentration in the storage chamber becomes high, the liquid nitrogen is vaporized and supplied to adjust the oxygen concentration. This method is easy to implement, but the problems are (1) the boiling point is -197
(2) The high vapor pressure of liquid nitrogen increases the operating pressure; (3) Purchasing liquid nitrogen;
(4) Maintenance and management is troublesome as the equipment must be brought in and used.
For example, if the amount of nitrogen gas supplied is incorrectly adjusted, the oxygen concentration inside the refrigerator may fall below the limit value. A method of supplying nitrogen gas from a cylinder instead of liquid nitrogen is considered, but it is difficult to put it into practical use because it requires handling a heavy high-pressure container and the cost of nitrogen gas is high.
そのため、上記(1)ないし(4)に示した問題点を解
決し、貯蔵庫の雰囲気調整を容易に行なわせる方
法の開発が望まれた。 Therefore, it has been desired to develop a method that solves the problems shown in (1) to (4) above and makes it easier to adjust the atmosphere of the storage.
本発明の目的は、液体窒素等の運搬使用をする
ことなく、貯蔵庫に生鮮食品の鮮度維持に適した
濃度の窒素富化ガスを発生する機能を持たせるこ
とにより、効果的な貯蔵庫の雰囲気調整方法を提
供することにある。 The purpose of the present invention is to effectively control the atmosphere in storage by providing the storage with the function of generating nitrogen-enriched gas at a concentration suitable for maintaining the freshness of perishable foods without using liquid nitrogen or the like. The purpose is to provide a method.
本発明は、野菜、果物などを貯蔵庫で長期保存
する場合に雰囲気中の酸素濃度は２ないし10％の
範囲が適し、空気中濃度より低いこと、また、庫
内の酸素濃度を調整するのに有効な窒素ガスは主
成分として大気中に多量に存在すること、に着目
し、大気中の酸素ガスを除去して窒素富化ガスを
発生する機能、すなわち圧力差吸着法（Pressure
Swing Adsorption、略称PSA）による窒素濃縮
装置（略称N2PSA装置）を貯蔵庫に取り付け、
上記貯蔵庫の扉の開閉に伴う信号によりN2PSA
装置を起動し大気中の酸素ガスを除去して窒素富
化空気を得、貯蔵庫に供給することによつて貯蔵
庫内の酸素濃度を一定範囲に維持するものであ
る。本発明は、扉の開閉時以外にも貯蔵庫内に窒
素富化空気を供給することを妨げるものではな
い。 The present invention provides that when storing vegetables, fruits, etc. for a long period of time, the oxygen concentration in the atmosphere is suitable for a range of 2 to 10%, which is lower than the concentration in the air, and that it is possible to adjust the oxygen concentration inside the warehouse. Focusing on the fact that effective nitrogen gas is present in large quantities in the atmosphere as a main component, we developed a function to remove oxygen gas from the atmosphere and generate nitrogen-enriched gas, that is, pressure difference adsorption method.
A nitrogen concentrator ( N2 PSA device) using Swing Adsorption (PSA) is installed in the storage.
N 2 PSA due to the signal accompanying the opening and closing of the storage door.
The device is activated to remove oxygen gas from the atmosphere to obtain nitrogen-enriched air, which is then supplied to the storage to maintain the oxygen concentration within the storage within a certain range. The present invention does not preclude supplying nitrogen-enriched air into the storage at times other than when the door is opened or closed.
N2PSA装置は酸素と窒素の吸着速度の異なる
吸着剤を使用し、加圧下で酸素を吸着除去し、窒
素富化空気を得るものである。酸素を吸着した吸
着剤は減圧することにより酸素を脱着し再生され
る。本発明を実施する際のN2PSA装置は吸着圧
力0.15ないし0.5MPa、脱着圧力0.04ないし
0.11MPaの範囲で操作される。第１図に吸着剤と
して分子ふるい活性炭を使用した場合の吸着圧力
と窒素富化空気中の酸素濃度の関係を例示する。
酸素濃度は吸着圧力を増加または脱着圧力を減少
することによつて低下する。また、窒素富化空気
中の酸素濃度は吸着剤に対する空気の空間速度、
吸着工程及び脱着工程の切替時間を変更すること
によつて変化させることができる。 The N 2 PSA device uses adsorbents with different adsorption rates for oxygen and nitrogen to adsorb and remove oxygen under pressure to obtain nitrogen-enriched air. The adsorbent that has adsorbed oxygen desorbs oxygen by reducing the pressure and is regenerated. The N 2 PSA device used to carry out the present invention has an adsorption pressure of 0.15 to 0.5 MPa and a desorption pressure of 0.04 to 0.5 MPa.
Operated in the range of 0.11MPa. FIG. 1 illustrates the relationship between adsorption pressure and oxygen concentration in nitrogen-enriched air when molecular sieve activated carbon is used as an adsorbent.
Oxygen concentration is reduced by increasing the adsorption pressure or decreasing the desorption pressure. In addition, the oxygen concentration in nitrogen-enriched air is determined by the space velocity of air relative to the adsorbent,
It can be changed by changing the switching time between the adsorption step and the desorption step.
ここで、野菜、果物などを保存する場合に適し
た酸素濃度は野菜、果物等の種類によつて異なる
が、N2PSA装置は上述のように操作条件を変更
することによつて野菜、果物等の種類に応じて適
当な酸素濃度の窒素富化空気を貯蔵庫に供給する
ことができ、貯蔵庫内の酸素濃度を一定範囲に維
持することができる。 The oxygen concentration suitable for preserving vegetables, fruits, etc. differs depending on the type of vegetables, fruits, etc., but the N 2 PSA device can store vegetables, fruits, etc. by changing the operating conditions as described above. Nitrogen-enriched air with an appropriate oxygen concentration can be supplied to the storage depending on the type of storage, and the oxygen concentration in the storage can be maintained within a certain range.
次に、貯蔵庫の酸素濃度の変化は野菜、果物等
の出し入れなどに必要な扉の開閉によつて主とし
て生じる。そのため、N2PSA装置からの窒素富
化空気を開閉後一定量供給することによつて貯蔵
庫内の酸素濃度を一定範囲に戻すことができる。
貯蔵庫の扉の開放によつて庫内の酸素濃度は急激
に増加するが、N2PSA装置を用い且つ大気より
窒素富化空気を得て貯蔵庫に供給することによ
り、貯蔵庫の酸素濃度を速やかに元の野菜、果物
等の長期保存に適した状態に復帰させることがで
きる。長期保管のための貯蔵庫の様に扉の開閉が
少ない場合には野菜、果物等の自己呼吸にもとづ
く酸素濃度の変化も問題になるが、この場合には
更に野菜、果物等の種類に応じたN2PSA装置の
運転プログラムを組むことによつてN2PSA装置
を連続的に運転することなく貯蔵庫内の酸素濃度
を一定範囲に維持することができる。 Next, changes in the oxygen concentration in the storage room are mainly caused by the opening and closing of the door, which is necessary for taking in and out vegetables, fruits, etc. Therefore, by supplying a certain amount of nitrogen-enriched air from the N 2 PSA device after opening and closing, the oxygen concentration in the storage can be returned to a certain range.
The oxygen concentration inside the storage room increases rapidly when the storage door is opened, but by using an N 2 PSA device and supplying nitrogen-enriched air from the atmosphere to the storage room, the oxygen concentration in the storage room can be quickly reduced. It is possible to restore vegetables, fruits, etc. to their original state suitable for long-term storage. In cases where the door is rarely opened and closed, such as in a storage room for long-term storage, changes in oxygen concentration due to the self-breathing of vegetables, fruits, etc. can also become a problem. By setting up an operation program for the N 2 PSA device, it is possible to maintain the oxygen concentration in the storage within a certain range without continuously operating the N 2 PSA device.
本発明による貯蔵庫の雰囲気調整方法をより効
果的に実施するためには、貯蔵庫内の酸素濃度を
測定する酸素センサーを使用し、酸素センサーか
らの信号で窒素富化空気の供給、N2PSA装置の
運転等を制御することが好ましい。すなわち、扉
の開閉、野菜、果物等の自己呼吸などで変化する
貯蔵庫内の酸素濃度を検出し、酸素濃度が設定範
囲からはずれた場合にはN2PSA装置からの窒素
富化空気を供給し、酸素濃度を設定範囲に復帰さ
せる。この方法により貯蔵庫内の酸素濃度を野
菜、果物等の長期保存に適した範囲に維持するこ
とができる。 In order to more effectively implement the storage atmosphere adjustment method according to the present invention, an oxygen sensor that measures the oxygen concentration in the storage is used, and a signal from the oxygen sensor is used to supply nitrogen-enriched air and an N 2 PSA device. It is preferable to control the operation, etc. of In other words, it detects the oxygen concentration inside the storage, which changes due to the opening and closing of the door, the self-breathing of vegetables, fruits, etc., and if the oxygen concentration deviates from the set range, it supplies nitrogen-enriched air from the N2 PSA device. , return the oxygen concentration to the set range. This method allows the oxygen concentration within the storage to be maintained within a range suitable for long-term storage of vegetables, fruits, and the like.
実施例 １
本発明にもとづく貯蔵庫の一実施例を第２図に
より説明する。貯蔵庫は冷蔵室１、冷凍装置２、
N2PSA装置３から構成される。N2PSA装置３は
圧縮機４、吸着塔５及び６、切替弁７ないし１２
などから構成される。配管１３からの空気は圧縮
機４で所定圧力に昇圧され、配管１４、弁７（ま
たは１０）を経由して吸着塔６（または６）に送
られ、吸着塔に充填されている吸着剤によつて酸
素の一部を吸着除去されて窒素富化空気として弁
９（または１２）、配管１５、弁１６、配管１７
を経由して冷蔵室１に供給される（以下吸着工程
と称する）。次に、弁７（または１０）及び弁９
（または１２）を閉じ、弁８（または１１）を開
けて吸着塔５（または６）内のガスを配管１９を
経由して大気に放出させて塔内の圧力を脱着圧力
まで減少させて吸着剤を再生する（以下脱着工程
と称する）。次に、弁８（または１１）を閉じ、
弁７（または１０）を開けて配管１４からの加圧
空気を吸着塔５（または６）に送つて塔内を昇圧
する（以下加圧工程と称する）。上記３工程のう
ち１塔で吸着工程を、他塔で残り２工程を実施さ
せ、両塔を交互に切替えることにより連続的に窒
素富化空気を発生させる。冷蔵室１への窒素富化
空気の供給にともなつて、冷蔵室１内のガスの一
部を配管１８を経由して大気に放出する。内容積
が200及び１の冷蔵室及び分子ふるい活性炭
を充填した吸着塔を使用し、第３図に示す装置構
成として窒素富化空気の供給を行つた。第３図は
第２図に示した一実施例に調節器２１を付加し、
扉２２の開閉に伴う信号によつてN2PSA装置３
の運転を制御することに特徴を有する。開放され
た扉２２が閉じた時の信号によつてN2PSA装置
３を起動し、調節器に設定した時間運転した後停
止し、次に扉の開閉があるまで休止する。内容積
200の冷蔵室についてN2PSA装置運転時におけ
る配管１５を流れる窒素富化空気の流量及び酸素
濃度が定格時に３／min及び３％、上記設定時
間30minで操作したところ、30min運転後の冷蔵
室内の扉の酸素濃度は開放時間１ないし20minの
範囲で３ないし８％の範囲となつた。Embodiment 1 An embodiment of the storage based on the present invention will be described with reference to FIG. The storage is a refrigerator room 1, a freezing device 2,
It consists of an N 2 PSA device 3. The N 2 PSA device 3 includes a compressor 4, adsorption towers 5 and 6, and switching valves 7 to 12.
Consists of etc. The air from the pipe 13 is boosted to a predetermined pressure by the compressor 4, and sent to the adsorption tower 6 (or 6) via the pipe 14 and valve 7 (or 10), where it is applied to the adsorbent filled in the adsorption tower. Therefore, part of the oxygen is adsorbed and removed and nitrogen-enriched air is passed through the valve 9 (or 12), piping 15, valve 16, and piping 17.
(hereinafter referred to as the adsorption step). Next, valve 7 (or 10) and valve 9
(or 12) is closed and valve 8 (or 11) is opened to release the gas in the adsorption tower 5 (or 6) to the atmosphere via piping 19, reducing the pressure inside the tower to the desorption pressure and adsorbing the gas. regenerate the agent (hereinafter referred to as the desorption step). Next, close valve 8 (or 11),
The valve 7 (or 10) is opened to send pressurized air from the pipe 14 to the adsorption tower 5 (or 6) to increase the pressure inside the tower (hereinafter referred to as the pressurization step). Among the three steps mentioned above, one tower performs the adsorption step and the other tower performs the remaining two steps, and by alternately switching between the two towers, nitrogen-enriched air is continuously generated. As nitrogen-enriched air is supplied to the refrigerator compartment 1, a portion of the gas in the refrigerator compartment 1 is released to the atmosphere via the pipe 18. A refrigerating chamber with an internal volume of 200 and 1,000 ml and an adsorption tower filled with molecular sieve activated carbon were used to supply nitrogen-enriched air as shown in FIG. FIG. 3 shows an example in which a regulator 21 is added to the embodiment shown in FIG.
The N 2 PSA device 3 is activated by the signal accompanying the opening and closing of the door 22.
It is characterized by controlling the operation of The N 2 PSA device 3 is activated by a signal when the opened door 22 is closed, operates for the time set in the controller, then stops, and remains inactive until the next door is opened or closed. Internal volume
Regarding the 200 refrigerator compartment, when the flow rate and oxygen concentration of the nitrogen-enriched air flowing through the pipe 15 during operation of the N 2 PSA device were rated at 3/min and 3%, and the above setting time was 30 min, the temperature in the refrigerator compartment after 30 min of operation was The oxygen concentration at the door ranged from 3 to 8% with the opening time ranging from 1 to 20 min.
なお、第４図に示すように冷蔵室１内に酸素セ
ンサーを設け扉の開閉に伴つて変化する酸素濃度
を酸素センサー３２で測定し、この信号を調節器
３３を経由してN2PSA装置３に伝えて起動また
は停止を行なわせることも可能である。 As shown in FIG. 4, an oxygen sensor is installed inside the refrigerator compartment 1, and the oxygen sensor 32 measures the oxygen concentration that changes as the door is opened and closed, and this signal is sent to the N 2 PSA device via the regulator 33. 3 to start or stop the process.
実施例 ２
本発明による雰囲気調整方法を採用して、酸
素濃度を３ないし５％、温度を10ないし13℃に調
整した貯蔵庫、温度のみを10ないし13℃に調整
した貯蔵庫にそれぞれトマトを保存し、10回／日
で扉を10min開放しながらトマトの鮮度を比較し
た。その結果、の貯蔵庫のトマトは約10日間で
鮮度を失つたが、の貯蔵庫のトマトは20日経過
した時点で鮮度が保たれていた。Example 2 Using the atmosphere adjustment method according to the present invention, tomatoes were stored in a storage with an oxygen concentration of 3 to 5% and a temperature of 10 to 13°C, and a storage with only a temperature of 10 to 13°C. We compared the freshness of tomatoes by opening the door for 10 minutes 10 times/day. As a result, the tomatoes in the storage area lost their freshness after about 10 days, but the tomatoes in the storage area remained fresh after 20 days.
本発明によれば、大気中の空気を用いて貯蔵庫
内の酸素濃度を２ないし10％の範囲の任意の値に
調整できるので、野菜、果物等の呼吸作用を抑制
して鮮度維持を図り長期保存を可能にする。ま
た、PSA装置を用いて大気中より窒素富化空気
を得て貯蔵庫に送るので、貯蔵庫の扉の開放に伴
う急激な酸素濃度の増加に対しても速やかに対応
し貯蔵庫内の酸素濃度を元の野菜、果物等の長期
保存に適した状態に復帰させることができる。本
発明は従来知られている液体窒素を気化させる方
法に比べて装置コストの低減、操作の簡易化を可
能にする。 According to the present invention, the oxygen concentration in the storage can be adjusted to any value in the range of 2 to 10% using atmospheric air, so the respiration effect of vegetables, fruits, etc. can be suppressed to maintain freshness for a long period of time. enable storage. In addition, since we use a PSA device to obtain nitrogen-enriched air from the atmosphere and send it to the storage, we can quickly respond to the sudden increase in oxygen concentration that occurs when the storage door is opened, and restore the oxygen concentration inside the storage to its original value. It is possible to restore vegetables, fruits, etc. to a state suitable for long-term storage. The present invention makes it possible to reduce equipment costs and simplify operations compared to conventionally known methods of vaporizing liquid nitrogen.
第１図はN2PSA装置における吸着圧力と窒素
富化空気中の酸素濃度の関係の一例を示す図、第
２図、第３図及び第４図はそれぞれ本発明の一実
施例を示す略図である。
１……冷蔵室、２……冷凍装置、３……
N2PSA装置、４……圧縮機、５，６……吸着塔、
３２……酸素センサー、３３……調節器。
Fig. 1 is a diagram showing an example of the relationship between adsorption pressure in a N 2 PSA device and oxygen concentration in nitrogen-enriched air, and Figs. 2, 3, and 4 are schematic diagrams each showing an embodiment of the present invention. It is. 1...Refrigerating room, 2...Freezing device, 3...
N 2 PSA device, 4... compressor, 5, 6... adsorption tower,
32... Oxygen sensor, 33... Regulator.
Claims (1)
着装置を設け、上記貯蔵庫の扉の開閉に伴う信号
により該圧力差吸着装置を起動し大気中の酸素ガ
スを除去して窒素富化空気を得、該窒素富化空気
を上記貯蔵庫に送つて該貯蔵庫内の酸素濃度を野
菜、果物の長期保存に適した範囲に調整すること
を特徴とする貯蔵庫の雰囲気調整方法。1. A pressure difference adsorption device is installed in a storage warehouse consisting of a refrigerator room and a freezing device, and the pressure difference adsorption device is activated by a signal accompanying the opening and closing of the door of the storage room to remove oxygen gas from the atmosphere and obtain nitrogen-enriched air. . A method for adjusting the atmosphere in a storage, which comprises sending the nitrogen-enriched air to the storage to adjust the oxygen concentration in the storage to a range suitable for long-term storage of vegetables and fruits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57122039A JPS5914749A (en) | 1982-07-15 | 1982-07-15 | Atmosphere adjustment of storage warehouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57122039A JPS5914749A (en) | 1982-07-15 | 1982-07-15 | Atmosphere adjustment of storage warehouse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5914749A JPS5914749A (en) | 1984-01-25 |
| JPH0342862B2 true JPH0342862B2 (en) | 1991-06-28 |
Family
ID=14826082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57122039A Granted JPS5914749A (en) | 1982-07-15 | 1982-07-15 | Atmosphere adjustment of storage warehouse |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5914749A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62134028A (en) * | 1985-12-09 | 1987-06-17 | 竹原 勝太郎 | Atmosphere conditioning equipment for stocker |
| JP2602427B2 (en) * | 1987-02-23 | 1997-04-23 | 鈴木総業株式会社 | Refrigeration equipment |
| JPH01174366A (en) * | 1987-12-28 | 1989-07-10 | Aisin Seiki Co Ltd | Storehouse for fresh food |
| JPH01174324A (en) * | 1987-12-28 | 1989-07-10 | Aisin Seiki Co Ltd | Storehouse for fresh food |
| JPH01174323A (en) * | 1987-12-28 | 1989-07-10 | Aisin Seiki Co Ltd | Storehouse for fresh food |
| JPH01174365A (en) * | 1987-12-28 | 1989-07-10 | Aisin Seiki Co Ltd | Storehouse for fresh food |
| JPH01174364A (en) * | 1987-12-28 | 1989-07-10 | Aisin Seiki Co Ltd | Storehouse for fresh food |
| JPH01174368A (en) * | 1987-12-29 | 1989-07-10 | Aisin Seiki Co Ltd | Storehouse for fresh food |
| JPH01174367A (en) * | 1987-12-29 | 1989-07-10 | Aisin Seiki Co Ltd | Storehouse for fresh food |
| JPH01179676A (en) * | 1987-12-30 | 1989-07-17 | Aisin Seiki Co Ltd | Storage house for perishables |
| JPH01179675A (en) * | 1987-12-30 | 1989-07-17 | Aisin Seiki Co Ltd | Storage chamber for perishable food |
| JP2709716B2 (en) * | 1988-05-06 | 1998-02-04 | 株式会社石井鐵工所 | Plant storage container equipped with liquefied gas container |
| GB8821231D0 (en) * | 1988-09-09 | 1988-10-12 | Boc Group Plc | Refrigerated containers |
| CN104429407B (en) * | 2014-12-05 | 2017-02-22 | 陈岗福 | Method for storing ophiopogon japonicus |
| JP5943106B1 (en) * | 2015-02-27 | 2016-06-29 | ダイキン工業株式会社 | Gas supply apparatus and container refrigeration apparatus including the same |
| CN113091362A (en) * | 2019-12-23 | 2021-07-09 | 广东美的白色家电技术创新中心有限公司 | A kind of refrigerator |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5612098A (en) * | 1979-07-11 | 1981-02-05 | Toshiba Corp | Crossflow fan |
-
1982
- 1982-07-15 JP JP57122039A patent/JPS5914749A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5612098A (en) * | 1979-07-11 | 1981-02-05 | Toshiba Corp | Crossflow fan |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5914749A (en) | 1984-01-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0342862B2 (en) | ||
| JPS59187579A (en) | Method and device for inactivating container for transport | |
| US5451248A (en) | Storage and transportation of goods under controlled atmospheres | |
| JP3140106B2 (en) | Storage and transportation of goods in a controlled atmosphere | |
| JPH02242612A (en) | Method and apparatus for storing produce | |
| JP2015072103A (en) | Refrigeration device for container | |
| AU711905B2 (en) | Controlling atmospheres in containers | |
| US6113671A (en) | Controlling atmospheres in containers | |
| EP0294036A2 (en) | Conditioning of the atmosphere over perishable goods | |
| KR20120010640A (en) | Apparatus for supllying nitrogen and method of controlling the same | |
| JP6178147B2 (en) | Nitrogen gas concentration system | |
| US2757840A (en) | Method of and apparatus for evacuating vessels | |
| JP3502410B2 (en) | Control of the atmosphere in the container | |
| JPS62134028A (en) | Atmosphere conditioning equipment for stocker | |
| CN112203743A (en) | Two selection modules for controlled atmosphere containers | |
| JPH01296940A (en) | Preservation of vegetable and fruit | |
| JP2548774B2 (en) | Deoxidizer and deodorizer for refrigerator | |
| JPH0441315A (en) | Storage device | |
| JPH0284132A (en) | Ca preservation of fruit, vegetable and flowering plants | |
| JPH0614704A (en) | Apparatus for keeping freshness of vegetables, fruits and flowers | |
| JPS59212670A (en) | Method of adjusting atmosphere in storehouse | |
| Wells et al. | Integrated Testing of the Air-Cooled Temperature Swing Adsorption Compression System (AC-TSAC) and 4-Bed Molecular Sieve (4BMS) | |
| JP2731418B2 (en) | Storage device | |
| JP2519833B2 (en) | Storage device | |
| WO2022065165A1 (en) | Ripening control device, air composition adjustment device, container, and freezer |