JPH0622403B2 - Vegetable and fruit storage equipment - Google Patents
Vegetable and fruit storage equipmentInfo
- Publication number
- JPH0622403B2 JPH0622403B2 JP671486A JP671486A JPH0622403B2 JP H0622403 B2 JPH0622403 B2 JP H0622403B2 JP 671486 A JP671486 A JP 671486A JP 671486 A JP671486 A JP 671486A JP H0622403 B2 JPH0622403 B2 JP H0622403B2
- Authority
- JP
- Japan
- Prior art keywords
- combustion
- air
- oxygen
- supplied
- refrigerator
- 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
- 235000013399 edible fruits Nutrition 0.000 title description 2
- 235000013311 vegetables Nutrition 0.000 title description 2
- 238000002485 combustion reaction Methods 0.000 claims description 52
- 239000004449 solid propellant Substances 0.000 claims description 20
- 238000007084 catalytic combustion reaction Methods 0.000 claims description 14
- 235000012055 fruits and vegetables Nutrition 0.000 claims description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 30
- 229910052760 oxygen Inorganic materials 0.000 description 30
- 239000001301 oxygen Substances 0.000 description 30
- 239000000446 fuel Substances 0.000 description 13
- 239000003054 catalyst Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000241 respiratory effect Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Storage Of Harvested Produce (AREA)
- Storage Of Fruits Or Vegetables (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、青果物の置かれている雰囲気の空気組成を調
節することにより、呼吸作用や微生物、酵素などの活動
を抑制する貯蔵装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage device that suppresses respiratory action and activities such as microorganisms and enzymes by adjusting the air composition of the atmosphere in which fruits and vegetables are placed.
従来の技術 従来の貯蔵装置は、例えば加藤薫「新しい資源方式ＣＡ
貯蔵システムについて」空気調和と冷凍１９７４−７・
１９１頁に示されるように第３図に示すような構成にな
っていた。2. Description of the Related Art A conventional storage device is, for example, Kaoru Kato “New Resource System CA
Storage system "Air conditioning and freezing 1974-7
As shown on page 191, the structure was as shown in FIG.
すなわち、ボンベ等より供給された燃料と循環用送風機
１により冷蔵庫２から供給された空気３が混合し、CO２
発生装置４内で燃焼してCO２を発生させる。そしてCO２
発生装置４で発生したCO２は冷蔵庫２へ供給されるため
に、冷蔵庫２内の空気を循環しながら燃焼によって冷蔵
庫２内のＯ２を減少し、CO２を増加する。CO２濃度が設
定値になればスクラバー５を運転し、過剰なCO２を吸着
する。次にＯ２濃度が設定値になれば、CO２発生装置４
を停止し、Ｏ２補給用送風機６を運転して、青果物の置
かれている雰囲気の空気組成を一定に保つようにして、
青果物の貯蔵を行なうものである。That is, the fuel supplied from a cylinder or the like and the air 3 supplied from the refrigerator 2 by the circulation blower 1 are mixed, and CO 2
It burns in the generator 4 to generate CO 2 . And CO 2
Since CO 2 generated by the generator 4 is supplied to the refrigerator 2, O 2 in the refrigerator 2 is reduced and CO 2 is increased by combustion while circulating the air in the refrigerator 2. When the CO 2 concentration reaches the set value, the scrubber 5 is operated to adsorb excess CO 2 . Next, when the O 2 concentration reaches the set value, the CO 2 generator 4
Then, the O 2 supply blower 6 is operated to keep the air composition of the atmosphere in which the fruits and vegetables are placed constant,
It stores fruits and vegetables.
発明が解決しようとする問題点 しかしこのような構造のものは、CO２発生装置にある燃
焼炉において、燃焼用空気として冷蔵庫内の空気を用い
るために、燃焼時間の経過とともに冷蔵庫内の酸素濃度
が低下するという現象が生じる。燃焼用空気の酸素濃度
が低下すると、燃焼状態が悪くなり、 CO が発生した
り、未燃成分を排出するという問題があった。However, since the air in the refrigerator is used as the combustion air in the combustion furnace in the CO 2 generator, the oxygen concentration in the refrigerator increases as the combustion time elapses. Occurs. When the oxygen concentration of the combustion air decreases, the combustion state deteriorates, and there are problems that CO is generated and unburned components are discharged.
この問題を解決するために、燃焼炉の排気側に触媒を設
け、排気ガスを浄化して排出するという方法が取られて
いる。この方法は酸欠時の酸素過剰率（（燃焼空気に含
まれる酸素量）／（理論酸素量））が１以上の場合には
触媒の効果が非常に大きいが、酸欠時の酸素過剰率が１
以下の場合は、たとえ触媒の活性を高めても、必要な酸
素量の絶対量が不足しているために、触媒の効果があま
りなく、 CO が発生したり、未燃成分を排出するという
問題があった。また、酸素量の絶対量不足を解消するた
めに、冷蔵庫内を循環する空気量を増加する方法も考え
られるが、循環空気量を増加すると、燃料が酸素と接触
する機会も増加し、燃料消費量も増加するために、この
方法では酸素の絶対量不足を解消するには致らない。In order to solve this problem, a method has been adopted in which a catalyst is provided on the exhaust side of the combustion furnace to purify and discharge exhaust gas. In this method, when the oxygen excess rate ((the amount of oxygen contained in combustion air) / (theoretical oxygen amount)) at the time of oxygen deficiency is 1 or more, the effect of the catalyst is very large, but the oxygen excess rate at the time of oxygen deficiency Is 1
In the following cases, even if the activity of the catalyst is increased, the absolute amount of oxygen required is insufficient, so the effect of the catalyst is not so great, and CO is generated or unburned components are discharged. was there. It is also possible to increase the amount of air circulating in the refrigerator in order to eliminate the absolute shortage of oxygen, but increasing the amount of circulating air also increases the chances that the fuel will come into contact with oxygen, increasing fuel consumption. Since this also increases the amount, this method is not sufficient to solve the absolute shortage of oxygen.
そこで本発明は簡単な構成で、燃焼特性の良好な青果物
貯蔵装置を提供するものである。Therefore, the present invention provides a fruit and vegetable storage device having a simple structure and good combustion characteristics.
問題点を解決するための手段 CO２発生装置の内部に設けた燃焼部の上流から燃焼用空
気の一部を供給する１次空気供給部を設け、燃焼部の下
流から残りの燃料用空気を供給する２次空気供給部を設
け、さらに前記２次空気供給部の下流に触媒燃焼装置を
設けたものである。Means for Solving the Problems A primary air supply unit for supplying a part of the combustion air from the upstream of the combustion unit provided inside the CO 2 generator is provided, and the remaining fuel air is supplied from the downstream of the combustion unit. A secondary air supply unit for supplying is provided, and a catalytic combustion device is further provided downstream of the secondary air supply unit.
作 用 この技術的手段による作用は次のようになる。Operation The effects of this technical means are as follows.
燃焼部に置かれた固体燃料には、燃焼用空気の一部が１
次空気供給部より供給されるために、燃焼後の排気ガス
中にはＣＯや未燃成分が多量に含まれる。ここで２次空
気供給部より残りの燃焼空気が供給され、排気ガスとよ
く混合して触媒燃焼装置へ供給される。この時、２次空
気供給部より供給される空気は固体燃料と接触しないた
めに、混合気の酸素過剰率を１より大きくすることがで
きる。従って触媒燃焼装置では触媒の効果を十分に発揮
して燃焼することができる。この事は、冷蔵庫内の空気
が酸欠状態になっても、２次空気供給部から供給される
燃焼用空気のために、絶えず酸素過剰率は１以上にな
る。この結果、CO２発生装置での燃焼特性を良好にする
ことができる。Part of the combustion air is contained in the solid fuel placed in the combustion section.
Since it is supplied from the next air supply unit, the exhaust gas after combustion contains a large amount of CO and unburned components. Here, the remaining combustion air is supplied from the secondary air supply unit, mixed well with the exhaust gas, and supplied to the catalytic combustion device. At this time, since the air supplied from the secondary air supply unit does not come into contact with the solid fuel, the oxygen excess ratio of the air-fuel mixture can be made larger than 1. Therefore, in the catalytic combustion device, the effect of the catalyst can be sufficiently exerted to burn. This means that even if the air in the refrigerator is in an oxygen-deficient state, the excess oxygen ratio constantly becomes 1 or more because of the combustion air supplied from the secondary air supply unit. As a result, the combustion characteristics in the CO 2 generator can be improved.
実施例 以下、本発明の一実施例を添付図面にもとづいて説明す
る。Embodiment One embodiment of the present invention will be described below with reference to the accompanying drawings.
第１図においてCO２発生装置７の燃焼部８を仕切るよう
に火格子９を設け、その上に炭素純度が高い固体燃料１
０を供給する。火格子９の下には電熱ヒータ１１が設け
てあり、始動時にこの電熱ヒータ１１に通電し、固体燃
料１０が燃焼するのに十分な温度まで加熱した時点で、
循環用送風機１２を運転し、燃焼部８に燃焼用空気を供
給する。固体燃料１０はすでに十分加熱されているの
で、空気が固体燃料１０に接触するや否や燃焼を開始す
る。この時の燃焼量は固体燃料１０に供給される酸素量
で決定される。燃焼用空気は、燃焼部８の上流で２つに
分けられ、一部は１次空気供給部１３から固体燃料１０
の上流より供給される。残りの燃焼用空気は２次空気供
給部１４の２次空気供給口１４′から固体燃料１０の下
流より供給され、１次空気供給部１３から供給された空
気で燃焼しきれなかった未燃成分やCOと混合して、触媒
燃焼装置１５へ供給され、そこで触媒燃焼を行ない、多
量のCO２を発生する。触媒燃焼装置１５には加熱ヒータ
が設けてあり、始動時や固体燃料の残量が少なくなり、
触媒の温度が触媒の活性温度以下になった時に、加熱ヒ
ータにより触媒の温度を高めるようにしてある。In FIG. 1, a grate 9 is provided so as to partition the combustion section 8 of the CO 2 generator 7, and a solid fuel 1 having a high carbon purity is provided on the grate 9.
Supply 0. An electric heater 11 is provided below the grate 9, and when the electric heater 11 is energized at the time of start-up and the solid fuel 10 is heated to a temperature sufficient for combustion,
The circulation blower 12 is operated to supply combustion air to the combustion section 8. Since the solid fuel 10 is already sufficiently heated, the air starts burning as soon as it comes into contact with the solid fuel 10. The amount of combustion at this time is determined by the amount of oxygen supplied to the solid fuel 10. Combustion air is divided into two upstream of the combustion unit 8, and a part of the combustion air is supplied from the primary air supply unit 13 to the solid fuel 10
Will be supplied from upstream. The remaining combustion air is supplied from the secondary air supply port 14 ′ of the secondary air supply unit 14 from the downstream side of the solid fuel 10, and the unburned components that cannot be completely burned by the air supplied from the primary air supply unit 13. It is mixed with CO and CO and supplied to the catalytic combustion device 15, where catalytic combustion is performed and a large amount of CO 2 is generated. The catalytic combustion device 15 is provided with a heater to reduce the remaining amount of solid fuel at the time of starting,
When the temperature of the catalyst becomes lower than the activation temperature of the catalyst, the temperature of the catalyst is raised by the heater.
CO２発生装置７で発生した多量のCO２を含む高温の燃焼
ガスは、冷却器１６で冷却されて、冷蔵庫１７へ供給さ
れる。そしてこのことより酸素濃度が低下した空気は、
再び循環用送風機１２により燃焼部８へ供給される。こ
のサイクルは冷蔵庫１７内のCO２濃度が設定値になるま
で続けられる。The high-temperature combustion gas containing a large amount of CO 2 generated by the CO 2 generator 7 is cooled by the cooler 16 and supplied to the refrigerator 17. And because of this, the air with reduced oxygen concentration
It is supplied to the combustion unit 8 again by the circulation blower 12. This cycle is continued until the CO 2 concentration in the refrigerator 17 reaches the set value.
冷蔵庫１７内のCO２が設定値になるとスクラバー１８を
運転して、設定値以上の過剰なCO２を吸着し、冷蔵庫１
７内のCO２濃度が設定値になるように調節している。When the CO 2 in the refrigerator 17 reaches the set value, the scrubber 18 is operated to adsorb excess CO 2 above the set value, and the refrigerator 1
The CO 2 concentration in 7 is adjusted to the set value.
冷蔵庫１７内の酸素濃度が設定値になると、CO２発生装
置７を停止する。以後は貯蔵している青果物が呼吸する
ことにより消費したＯ２はＯ2供給用送風機１９を運転
することにより大気中の酸素を冷蔵庫１７へ供給し、青
果物が呼吸することにより発生したCO２はスクラバー１
８を運転することにより吸着し、冷蔵庫１７内の空気組
成を設定値に保ち続ける。When the oxygen concentration in the refrigerator 17 reaches the set value, the CO 2 generator 7 is stopped. After that, the O 2 consumed by breathing the fruits and vegetables stored supplies the oxygen in the atmosphere to the refrigerator 17 by operating the blower 19 for O 2 supply, and the CO 2 generated by breathing the fruits and vegetables is Scrubber 1
By operating No. 8, it adsorbs and keeps the air composition in the refrigerator 17 at the set value.
このような構成の本発明の実施例の具体的な動作関係に
ついて以下に説明する。固体燃料の表面に酸素が接触す
ると、固体燃料の表面でＣ＋1/2Ｏ２→ＣＯという反応
が起こり、続いて固体燃料の表面近傍でＣＯ＋1/2Ｏ２
→CO２という気相反応が起こる。従って、固体燃料の燃
焼は、固体燃料の表面積と燃料用空気の空気量に依存す
るところが大きい。このために供給空気量と燃料消費量
の関係は、第２図のように空気量が少なくなると燃料消
費量が小さくなる傾向がある。一方、燃焼用空気として
冷蔵庫１７内の空気を用いた場合、燃焼時間の経過とと
もに、冷蔵庫１７内の空気の酸素濃度が低下する。Specific operation relationships of the embodiment of the present invention having such a configuration will be described below. When oxygen comes into contact with the surface of the solid fuel, a reaction of C + 1 / 2O 2 → CO occurs on the surface of the solid fuel, and subsequently CO + 1 / 2O 2 near the surface of the solid fuel.
→ CO 2 gas phase reaction occurs. Therefore, the combustion of the solid fuel largely depends on the surface area of the solid fuel and the air amount of the fuel air. Therefore, the relationship between the supply air amount and the fuel consumption amount tends to decrease as the air amount decreases as shown in FIG. On the other hand, when the air in the refrigerator 17 is used as the combustion air, the oxygen concentration of the air in the refrigerator 17 decreases as the burning time elapses.
従って、燃焼部８へ供給する燃焼用空気は、上述の酸素
濃度の低下をみこして、酸素過剰率を大きくしておかな
ければならない。これは、酸素過剰率を大きくしておか
ないと、酸素濃度の低下時に触媒燃焼装置での酸素過剰
率が１以下になり、触媒の効果がなくなるからである。
ところが、燃焼用空気の全量を一次空気供給部１３から
燃焼部８へ供給した場合、酸素過剰率を大きくするため
に、循環する空気量を増やすと、第２図の関係から燃料
消費量が増えてしまい、この結果、酸素過剰率を大きく
取れなくなる。Therefore, the combustion air supplied to the combustion section 8 must have a large oxygen excess rate in view of the above-mentioned decrease in oxygen concentration. This is because unless the oxygen excess ratio is made large, the oxygen excess ratio in the catalytic combustion device becomes 1 or less when the oxygen concentration decreases, and the effect of the catalyst disappears.
However, when the total amount of combustion air is supplied from the primary air supply unit 13 to the combustion unit 8, if the circulating air amount is increased in order to increase the oxygen excess rate, the fuel consumption amount increases from the relationship of FIG. As a result, a large excess oxygen ratio cannot be obtained.
そこで、本発明では燃焼用空気の一部を１次空気供給部
１３から固体燃料１０の上流より供給し、残りの燃焼用
空気が２次空気供給部１４の２次空気供給口１４′から
固体燃料１０の下流より供給する構成になっているの
で、２次空気供給口１４′から供給される燃焼用空気
は、固体燃料に接触せず、固体燃料の燃料消費量に全く
影響を与えない。従って、酸素過剰率を大きく取ること
ができ、燃焼用空気が酸欠状態になっても、触媒燃焼装
置１５では混合気は必ず酸素過剰率が１より大きくなる
ので、触媒が効果的に働いて触媒燃焼を行ない、燃焼特
性を大幅に良好にすることができる。Therefore, in the present invention, part of the combustion air is supplied from the upstream of the solid fuel 10 from the primary air supply unit 13, and the remaining combustion air is supplied from the secondary air supply port 14 ′ of the secondary air supply unit 14 to the solid state. Since the fuel is supplied from the downstream side of the fuel 10, the combustion air supplied from the secondary air supply port 14 'does not come into contact with the solid fuel and does not affect the fuel consumption of the solid fuel at all. Therefore, a large oxygen excess ratio can be obtained, and even if the combustion air is in an oxygen-deficient state, the air-fuel mixture in the catalytic combustion device 15 always has an oxygen excess ratio greater than 1, so that the catalyst works effectively. By carrying out catalytic combustion, the combustion characteristics can be significantly improved.
発明の効果 本発明は、燃焼部の上流より燃焼用空気の一部を供給す
る１次空気供給部を設け、燃焼部の下流より残りの燃焼
用空気を供給する２次空気供給部を設け、さらに下流に
触媒燃焼装置を設けることにより、触媒燃焼装置での酸
素過剰率を絶えず１以上にして、触媒燃焼を行ない、燃
焼特性の改善を図ることができる。Advantageous Effects of Invention The present invention provides a primary air supply unit that supplies a part of combustion air from the upstream of the combustion unit, and a secondary air supply unit that supplies the remaining combustion air from the downstream of the combustion unit. By providing the catalytic combustion device further downstream, the oxygen excess ratio in the catalytic combustion device is constantly set to 1 or more, catalytic combustion is performed, and combustion characteristics can be improved.
第１図は本発明の一実施例の青果物貯蔵装置の概略図、
第２図は固体燃料の空気量と燃料消費量の関係を示す特
性図、第３図は従来の青果物貯蔵装置の概略図である。 ７……CO２発生装置、８……燃焼部、１２……循環用送
風機、１３……１次空気供給部、１４……２次空気供給
部、１５……触媒燃焼装置、１７……冷蔵庫、１８……
スクラバー。FIG. 1 is a schematic view of a vegetable and fruit storage device according to an embodiment of the present invention,
FIG. 2 is a characteristic diagram showing the relationship between the air amount of solid fuel and the fuel consumption amount, and FIG. 3 is a schematic diagram of a conventional fruit and vegetable storage device. 7 ... CO 2 generator, 8 ... Combustion part, 12 ... Circulation blower, 13 ... Primary air supply part, 14 ... Secondary air supply part, 15 ... Catalytic combustion device, 17 ... Refrigerator , 18 ……
Scrubber.
フロントページの続き (72)発明者 竹内 康弘 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 小野 之良 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 沼本 浩直 大阪府門真市大字門真1006番地 松下電器 産業株式会社内Front page continued (72) Inventor Yasuhiro Takeuchi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Inventor Hironao Numamoto 1006 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.
Claims (1)
に設けた燃焼部を有するCO２発生装置と、前記燃焼部の
燃焼用空気として前記冷蔵庫内の空気を循環して前記CO
２発生装置に供給する送風手段を有し、前記燃焼部の上
流より前記燃焼用空気の一部を供給する１次空気供給部
を設け、前記燃焼部の下流より残りの燃焼用空気を供給
する２次空気供給部を設け、さらに前記２次空気供給部
の下流に触媒燃焼装置を設けた青果物貯蔵装置。1. A refrigerator, a CO 2 generator having a combustion section in which a solid fuel having a high carbon purity is provided, and an air in the refrigerator is circulated as the combustion air for the combustion section to circulate the CO.
A primary air supply unit for supplying a part of the combustion air from the upstream side of the combustion unit is provided, and a remaining combustion air is supplied from the downstream side of the combustion unit. A fruit and vegetable storage device comprising a secondary air supply unit and a catalytic combustion device downstream of the secondary air supply unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP671486A JPH0622403B2 (en) | 1986-01-16 | 1986-01-16 | Vegetable and fruit storage equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP671486A JPH0622403B2 (en) | 1986-01-16 | 1986-01-16 | Vegetable and fruit storage equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62166813A JPS62166813A (en) | 1987-07-23 |
| JPH0622403B2 true JPH0622403B2 (en) | 1994-03-30 |
Family
ID=11645934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP671486A Expired - Lifetime JPH0622403B2 (en) | 1986-01-16 | 1986-01-16 | Vegetable and fruit storage equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0622403B2 (en) |
-
1986
- 1986-01-16 JP JP671486A patent/JPH0622403B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62166813A (en) | 1987-07-23 |
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