JPH09287869A - Refrigerator having oxygen-concentration adjusting function - Google Patents
Refrigerator having oxygen-concentration adjusting functionInfo
- Publication number
- JPH09287869A JPH09287869A JP9687096A JP9687096A JPH09287869A JP H09287869 A JPH09287869 A JP H09287869A JP 9687096 A JP9687096 A JP 9687096A JP 9687096 A JP9687096 A JP 9687096A JP H09287869 A JPH09287869 A JP H09287869A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerator
- water
- oxygen
- acid
- cathode
- 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.)
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- Freezing, Cooling And Drying Of Foods (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、庫内の酸素濃度が
調整できる冷蔵庫に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator capable of adjusting the oxygen concentration in a refrigerator.
【０００２】[0002]
【従来の技術】通常の冷凍及び冷蔵保存は、食品の温度
を下げることにより、腐敗菌の繁殖を抑制したり、食品
の代謝や変質の速度を抑えることによって食品を長期間
保存する方法である。物を冷やす手段としてはペルチェ
素子や断熱消磁法など幾つかあるが、効率や経済性でフ
ロンなどの冷媒の圧縮による液化とその蒸発時の蒸発潜
熱を利用するいわいる蒸気圧縮式が主流である。とろこ
で、近年、単に長期間保存が効くといった機能だけでな
く、よりおいしく新鮮な状態で保存しようという保存の
質が問われるようになり、摂氏零度よりわずか下の温度
で凍らせない状態で保存したり、野菜などをよりみずみ
ずしい状態で保存するために庫内の湿度を調整する機能
を有した冷蔵庫も製品化されている。また、断熱材の性
能向上やコンプレッサーの効率改善によって、省エネル
ギー化を図った冷蔵庫も実用化されている。2. Description of the Related Art Ordinary frozen and refrigerated storage is a method of preserving foods for a long period of time by suppressing the growth of spoilage bacteria by lowering the temperature of foods or by suppressing the rate of metabolism and deterioration of foods . There are several methods such as Peltier element and adiabatic demagnetization method to cool the object, but the so-called vapor compression method which uses liquefaction by compression of refrigerant such as CFC and latent heat of vaporization at the time of evaporation is the mainstream because of its efficiency and economy. . In recent years, syrups have come to be questioned not only about the function of long-term storage, but also on the quality of storage to preserve them in a delicious and fresh state, so that they cannot be frozen at temperatures just below zero degrees Celsius. Refrigerators having a function of adjusting the humidity in the refrigerator in order to store and to keep vegetables in a fresher state have been commercialized. Moreover, energy-saving refrigerators have been put into practical use by improving the performance of heat insulating materials and the efficiency of compressors.
【０００３】一方、業務用の野菜・果物の保存ではＣＡ
貯蔵（雰囲気制御貯蔵）と称して、炭素燃料の燃焼によ
って庫内の炭酸ガスの濃度を高め、一種の窒息状態を実
現して野菜・果物の代謝を抑制する方法がある。On the other hand, CA is used for storing vegetables and fruits for commercial use.
There is a method called storage (atmosphere controlled storage) in which the concentration of carbon dioxide gas in the refrigerator is increased by combustion of carbon fuel to realize a kind of suffocation state and suppress the metabolism of vegetables and fruits.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな保存方法でも雰囲気中の酸素によって代謝や劣化が
促進される場合には単なる冷蔵保存は必ずしも有効では
なかった。例えばバターやマーガリンなどが保存中に空
気中の酸素によって酸化され、空気と接していた表面が
黄色くなったり、鉄分を含んだ果物が変色したり、ある
いは豆類や穀物などが保存中に食味がまずくなることな
どである。また、湿度などに比べると影響は小さいもの
の菜物野菜や根菜類など空気中の酸素によって劣化が促
進されていた。また、庫内の温度を下げて長期間冷蔵保
存しようとすると電気エネルギーを大量に使うことにな
り、問題であった。However, even with such a storage method, mere refrigeration storage is not always effective when metabolism and deterioration are promoted by oxygen in the atmosphere. For example, butter and margarine are oxidized by oxygen in the air during storage, the surface in contact with air becomes yellow, the fruits containing iron discolor, or beans and grains have a bad taste during storage. It will be. In addition, although the influence is small compared to humidity and the like, the deterioration was promoted by oxygen in the air such as rape vegetables and root vegetables. In addition, reducing the temperature inside the refrigerator to store it in the refrigerator for a long time requires a large amount of electric energy, which is a problem.
【０００５】また、炭素燃料の燃焼によって庫内の炭酸
ガス濃度を制御する方法では、酸素濃度の制御は十分で
はなく、設備も大がかりで家庭用冷蔵庫などに搭載する
ことは構造的にもコスト的にも困難であった。Further, in the method of controlling the carbon dioxide concentration in the chamber by burning the carbon fuel, the oxygen concentration is not sufficiently controlled, and the equipment is large in size, and it is structurally costly to install it in a domestic refrigerator or the like. It was also difficult.
【０００６】本発明は、このような従来の冷蔵保存の課
題を考慮し、実用的でコンパクトな脱酸素機能を冷蔵庫
に付与することによって、野菜などの食品をより良好な
状態で長期間保存でき、省エネルギー性も高い冷蔵庫を
提供することを目的とする。In consideration of the problems of conventional refrigerated storage, the present invention provides a refrigerator with a practical and compact deoxidizing function, so that foods such as vegetables can be stored in a better condition for a long period of time. The purpose is to provide a refrigerator with high energy efficiency.
【０００７】[0007]
【課題を解決するための手段】本発明では高分子固体電
解質膜による電気化学的な酸素濃度調整機能を蒸気圧縮
式冷凍機を備えた冷蔵庫の構造に一体化して付与し、保
存すべき食品を低温でかつ雰囲気酸素濃度を通常より低
下させた状態で長時間保存できる冷蔵庫の構造を開示す
るものである。According to the present invention, an electrochemical oxygen concentration adjusting function by a polymer solid electrolyte membrane is integrally provided to the structure of a refrigerator equipped with a vapor compression refrigerator, and a food to be preserved is provided. Disclosed is a structure of a refrigerator that can be stored at a low temperature for a long time in a state where the atmospheric oxygen concentration is lower than usual.
【０００８】より具体的には水素イオン導電性を有する
固体高分子電解質膜とそれを挟む２つの電極、それらの
電極間に電流を通じることによって、陽極側で酸素が発
生する一方で、陰極側に存在する酸素は電極反応によっ
て失われる。したがって、陰極を冷蔵庫内に配置した
り、エアーポンプやファンなどの送風装置を用いて冷蔵
庫内の空気を陰極表面へ循環させてやれば、冷蔵庫内の
酸素濃度を減ずることができる。この際、脱酸素装置を
構成する固体電解質膜には蒸気圧縮式冷凍機によって得
た冷却熱で冷蔵庫内もしくは外気の水分を凝縮させた凝
縮水を適宜補給してやることによって、脱酸素装置が長
期間安定して稼働するようにしてある。冷蔵庫内の酸素
濃度は酸素センサーにてモニターし、冷蔵庫内を一定の
酸素濃度に保つようにしている。More specifically, a solid polymer electrolyte membrane having hydrogen ion conductivity, two electrodes sandwiching the membrane, and current flowing between the electrodes generate oxygen on the anode side, while generating oxygen on the cathode side. Oxygen present in is lost by the electrode reaction. Therefore, the oxygen concentration in the refrigerator can be reduced by disposing the cathode in the refrigerator or circulating the air in the refrigerator to the surface of the cathode using a blower such as an air pump or a fan. At this time, the solid electrolyte membrane constituting the deoxidizer is appropriately replenished with condensed water obtained by condensing the moisture in the refrigerator or the outside air by the cooling heat obtained by the vapor compression refrigerator, so that the deoxidizer can be used for a long period of time. It is designed to operate stably. The oxygen concentration in the refrigerator is monitored by an oxygen sensor to maintain a constant oxygen concentration in the refrigerator.
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【００１０】まず、水素イオン伝導性を有する固体高分
子電解質膜による脱酸素装置について、構成及び動作を
図１を用いて説明する。水素イオンを伝導する固体高分
子電解質膜１、および電解質膜１を狭持する陽極２と陰
極３には白金触媒などが担持されており、電解質膜１と
はホットプレスなどを用いて一体に接合されている。陽
極２と陰極３の外側には集電体４が密接して設けられて
いる。陽極側空間と陰極側空間とは電解質膜１によって
隔離されており、陽極側には水容器５が設置されてい
る。通電によって陰極側空間の酸素は、陰極側に生じた
水素イオンもしくは水素ガスと反応し、水となって電解
質膜１中に取り込まれる。一方陽極側では水の電気分解
による酸素が発生し、全体としては陰極側空間の酸素が
陽極側へポンピングされる。ここでは、電解質膜１にパ
ーフルオロカーボンスルフォン酸膜（50×50mm，膜厚10
0μm）を用い、陽極２及び陰極３には、表面に白金を担
持したカーボン粉末とフッ素樹脂粉末の混合物を加圧成
形して適度な撥水性を持たせた多孔質電極を用いた。集
電体４には、表面に白金メッキしたメッシュ状のチタン
板を用いた。First, the configuration and operation of a deoxidizer using a solid polymer electrolyte membrane having hydrogen ion conductivity will be described with reference to FIG. A solid polymer electrolyte membrane 1 that conducts hydrogen ions, and a platinum catalyst or the like are carried on the anode 2 and the cathode 3 that sandwich the electrolyte membrane 1. The electrolyte membrane 1 and the electrolyte membrane 1 are integrally joined using a hot press or the like. Has been done. A current collector 4 is provided in close contact with the outside of the anode 2 and the cathode 3. The anode side space and the cathode side space are separated by the electrolyte membrane 1, and the water container 5 is installed on the anode side. Oxygen in the space on the cathode side due to the energization reacts with hydrogen ions or hydrogen gas generated on the cathode side and becomes water, which is taken into the electrolyte membrane 1. On the other hand, oxygen is generated by electrolysis of water on the anode side, and oxygen in the cathode side space is pumped to the anode side as a whole. Here, a perfluorocarbon sulfonic acid film (50 × 50 mm, film thickness 10
As the anode 2 and the cathode 3, a porous electrode having a suitable water repellency by pressure molding a mixture of carbon powder having platinum supported on its surface and fluororesin powder was used. As the current collector 4, a mesh-shaped titanium plate having a platinum-plated surface was used.
【００１１】このような構成の脱酸素装置６の陰極３側
を、図２のように冷蔵庫の野菜室７の内部に配置した。
冷蔵庫はフロン圧縮用のコンプレッサーなど本来の庫内
冷却に必要な装置が背面にあり、前面のドアで開閉され
る。除霜時に冷却板８などに付着した霜が解凍してでき
たドレイン水９はマイクロチューブや活性炭などの濾過
器１０を通した後、水リザーバータンク１１に貯えられ
ている。また、水容器５には水位センサー１２がついて
おり、一定の水位より下がると水リザーバータンク１１
より水が供給される構造となっている。野菜室７は約３
０リットルで内容積で、冷凍室１３（冷却部）を上部に
持つ２４０リットルの冷蔵庫の底部にあり、冷蔵庫の残
りの部分とは仕切り１４で簡易に仕切られており、冷気
が容易に循環することはない構造とした。この野菜室７
にはガルバニ式の酸素センサー１５と湿度センサー１６
を取り付け、酸素濃度や湿度がモニターできるようにし
た。The cathode 3 side of the deoxidizer 6 having such a structure is arranged inside the vegetable compartment 7 of the refrigerator as shown in FIG.
The refrigerator has a device such as a compressor for CFC compression, which is necessary for cooling the inside of the refrigerator, and it is opened and closed by the front door. Drain water 9 formed by defrosting frost attached to the cooling plate 8 during defrosting is stored in a water reservoir tank 11 after passing through a filter 10 such as a microtube or activated carbon. Further, the water container 5 is provided with a water level sensor 12, and when the water level drops below a certain level, the water reservoir tank 11
The structure is such that more water is supplied. Vegetable room 7 is about 3
Located at the bottom of a 240 liter refrigerator with 0 liters of internal volume and a freezer compartment 13 (cooling section) at the top, and is simply separated from the rest of the refrigerator by a partition 14 so that cold air can easily circulate. It has a unique structure. This vegetable room 7
Galvanic oxygen sensor 15 and humidity sensor 16
Was attached so that the oxygen concentration and humidity could be monitored.
【００１２】さらに改善した構造として陰極側空間と野
菜室とをつなぐガス流路１７に、冷却板１８を構成し、
冷却板１８表面に結露した凝縮水１９を、脱酸素装置６
を構成する水容器５への水供給の水源とする構成も実施
した。このガス流路１７途中に設けた冷却板１８は陰極
表面で生成した水蒸気やミストが野菜室７内に混入させ
ないためのトラップの役割も果たしているが、逆に収納
庫から陰極側へ向かうガス流路にも、食品から出るほこ
りやガスのトラップを設けることが望ましい。また、庫
外にも一部露出した冷却板を構成し、庫内の結露水だけ
では供給すべき水分の確保ができなくなったときに、露
出した結露板に凝縮した水を水リザーバータンクに補給
する構造の冷蔵庫も実施した。As a further improved structure, a cooling plate 18 is formed in the gas flow path 17 connecting the cathode side space and the vegetable compartment,
The condensed water 19 that has condensed on the surface of the cooling plate 18 is removed by the deoxidizer 6
The water source for supplying water to the water container 5 constituting the above was also implemented. The cooling plate 18 provided in the middle of the gas flow path 17 also serves as a trap for preventing water vapor and mist generated on the cathode surface from mixing into the vegetable compartment 7, but conversely the gas flow from the storage to the cathode side. It is also desirable to provide a trap for dust and gas generated from food in the road. In addition, a cooling plate that is partially exposed outside the refrigerator is configured to replenish water condensed on the exposed condensation plate to the water reservoir tank when it is not possible to secure the water to be supplied with only the condensation water inside the refrigerator. We also implemented a refrigerator with such a structure.
【００１３】以上のような構成で野菜室の酸素濃度の調
整は可能であったが、野菜室７の頻繁な開閉や、急速に
脱酸素することが必要な場合に備えて脱酸素速度の改善
を行った。まず、陰極側空間と野菜室７とを２本のガス
流路でつなぎ、空気送風機で強制循環させることによっ
て、脱酸素を効率的に行うと同時に野菜室７内の湿度も
定量的に制御できるようになった。すなわち、印加電圧
を２．５Ｖにした場合、空気を強制循環させない時には
５０ｍＡ／ｃｍ2の電流しか通じなかったが、強制循環
させることによって５００ｍＡ／ｃｍ2の電流が得られ
た。酸素の排出速度は通じる電流にほぼ依存するので、
排出速度を１０倍にできたことになる。実施した冷蔵庫
では約４０ｃｍ2の電極面積を有する脱酸素装置６に５
００ｍＡ／ｃｍ2の電流を通じた結果、内容積３０リッ
トルの野菜室を１０％の酸素濃度にするのに約６０分か
かった。これらの酸素排出速度は電極面積を大きくした
り、印加電圧を変えることで調整できた。Although the oxygen concentration in the vegetable compartment can be adjusted with the above-mentioned structure, the deoxidizing rate is improved in preparation for frequent opening and closing of the vegetable compartment 7 and rapid deoxidizing. I went. First, by connecting the cathode side space and the vegetable compartment 7 with two gas flow paths and forcibly circulating them with an air blower, deoxidation can be efficiently performed and at the same time the humidity in the vegetable compartment 7 can be quantitatively controlled. It became so. That is, when the applied voltage was 2.5 V, only a current of 50 mA / cm 2 was passed when the air was not forced to circulate, but a current of 500 mA / cm 2 was obtained by forced circulation. Since the rate of oxygen release depends almost entirely on the current that flows through it,
This means that the discharge speed can be increased 10 times. In the implemented refrigerator, the deoxidizer 6 having an electrode area of about 40 cm 2 has 5
As a result of passing a current of 00 mA / cm 2 , it took about 60 minutes to bring a vegetable compartment having an internal volume of 30 liters to an oxygen concentration of 10%. These oxygen discharge rates could be adjusted by increasing the electrode area or changing the applied voltage.
【００１４】次にこの野菜室７にほうれん草ともやしを
種々の状態で保存し、食味検査を行った。また併せて、
野菜ではないがソフトマーガリンを蓋を開けた状態で保
存し、黄変の度合いを調べた。まず、すべての保存実験
で庫内温度は摂氏５℃とし、湿度は６０〜８０％とし
た。酸素濃度は５％、１０％、１５％、１８％にし、比
較のために脱酸素装置を稼働させていない、すなわち酸
素濃度が約２０．７％の実験も行った。Next, spinach and bean sprouts were stored in the vegetable compartment 7 in various states, and taste inspection was performed. In addition,
Soft margarine, which is not a vegetable, was stored with the lid open, and the degree of yellowing was examined. First, in all storage experiments, the internal temperature was set to 5 ° C and the humidity was set to 60 to 80%. The oxygen concentration was set to 5%, 10%, 15%, and 18%, and an experiment in which the deoxidizer was not operated, that is, the oxygen concentration was about 20.7%, was also performed for comparison.
【００１５】その結果、１週間保存した後の食味検査で
は、脱酸素装置６を稼働させていない野菜室で保存した
物に比べて、酸素濃度１８％で保存したものは有意の差
がでなかったが、酸素濃度１５％では７割の人が低酸素
下で保存した野菜の食感の良さを訴え、酸素濃度１０％
では９割の人が、また酸素濃度５％ではほぼすべての人
が本発明の低酸素下で保存した野菜を支持した。この傾
向はほうれん草よりももやしの場合に著しかった。ま
た、ソフトマーガリンの保存試験の結果も、野菜の保存
試験の結果と一致し、酸素濃度が高いほど表面を覆う黄
色の層が厚くなっていた。As a result, in the taste test after storage for 1 week, there was no significant difference in the food stored at an oxygen concentration of 18% as compared with the food stored in the vegetable compartment in which the deoxidizer 6 was not operated. However, at an oxygen concentration of 15%, 70% of the people complained about the texture of vegetables stored under low oxygen, and the oxygen concentration was 10%.
, 90% of the people, and almost 5% of the people had an oxygen concentration of 5% supported the vegetables stored under hypoxia of the present invention. This tendency was more pronounced for sprouts than spinach. The results of the storage test of soft margarine also coincided with the results of the storage test of vegetables, and the higher the oxygen concentration, the thicker the yellow layer covering the surface.
【００１６】以上が本発明の基本構成であるが、脱酸素
速度を大きくするためにさらに改善を行った。脱酸素装
置の陽極側に供給する水分として、水以外に硫酸、ホウ
酸、あるいはクエン酸などの酸性水溶液を用いれば、脱
酸素性能をより高めることができた。すなわち、陽極側
の水電解で発生した水素イオンは高分子固体電解質膜へ
拡散移動していくが、純水中では電気抵抗が大きく同じ
電流を通じようとするとより高い電圧を印加しなければ
ならないが、酸性水溶液中では少しの印加電圧で済んだ
例えば、３００ｍＡ／ｃｍ2の電流密度を得るのに純水
では２．５Ｖの電圧を印加しなければならなかったが、
０．３モル／リットルの希硫酸を用いると１．８Ｖの印
加電圧で良かった。ほう酸、クエン酸についても同様で
酸の種類よりも酸のｐＨに大きく依存することがわかっ
た。The above is the basic constitution of the present invention, but further improvements were made in order to increase the deoxidation rate. As the water content supplied to the anode side of the deoxidizer, an acidic aqueous solution such as sulfuric acid, boric acid, or citric acid was used in addition to water, whereby the deoxidation performance could be further improved. That is, the hydrogen ions generated by water electrolysis on the anode side diffuse and move to the polymer solid electrolyte membrane, but in pure water the electrical resistance is large and a higher voltage must be applied if the same current is to be passed. However, it was necessary to apply a voltage of 2.5 V with pure water to obtain a current density of 300 mA / cm 2 in an acidic aqueous solution.
When 0.3 mol / liter of dilute sulfuric acid was used, the applied voltage of 1.8 V was satisfactory. The same applies to boric acid and citric acid, and it was found that the pH depends more on the pH of the acid than on the type of acid.
【００１７】また、長時間繰り返し実験を行っていくう
ちに、幾つかの冷蔵庫で庫内の酸素濃度が一定値以下に
低くならないものが散見された。原因を調べると、陽極
で発生した酸素ガスの気泡によって、電極が破壊されて
いることがわかった。そこで、多孔質体であるガス拡散
電極を廃し、集電体のみを電極を兼ねる形で電極部に配
した。集電体としては白金メッキしたチタンメッシュを
使用した。そうすると電流密度５００ｍＡ／ｃｍ2で１
０００時間を越える連続運転でも酸素濃度調整能力が低
下したものは見出されなかった。Further, during repeated experiments for a long time, it was found that some refrigerators did not lower the oxygen concentration in the refrigerator below a certain value. When the cause was investigated, it was found that the electrode was destroyed by the bubbles of oxygen gas generated at the anode. Therefore, the gas diffusion electrode, which is a porous body, is abolished, and only the current collector is arranged in the electrode portion so as to also serve as the electrode. A platinum mesh titanium mesh was used as a current collector. Then, at a current density of 500 mA / cm 2 , 1
Even after continuous operation for more than 000 hours, no oxygen concentration adjusting ability was found to have decreased.
【００１８】つぎに、低酸素雰囲気による食品の長期保
存性の向上と、それに伴う省エネルギー性の効果を調べ
るために次のような実験を行った。すなわち、低酸素雰
囲気状態を野菜室などの限られたスペースに限らず、冷
凍室を除く冷蔵庫内全体で実現した。内容積が大きい
分、目的の酸素濃度に到達するまでの時間がかかった。
脱酸素装置を稼働させずに庫内を摂氏３℃に維持し、野
菜や肉などを保存した場合と比べ、酸素濃度を１０％に
した場合に庫内温度をいろいろ変えて、１週間保存後の
食味検査を行った。その結果、酸素濃度を１０％と半減
させた場合、庫内温度を５℃に設定しても、３℃にした
ときと同等な保存性能が得られることがわかった。脱酸
素装置を稼働するための電力と相殺しても、意味のある
省エネルギー性を有していることがわかった。Next, the following experiment was conducted in order to improve the long-term storage stability of foods in a low oxygen atmosphere and the effect of energy saving. In other words, the low oxygen atmosphere was realized not only in the limited space such as the vegetable compartment but also in the entire refrigerator excluding the freezing compartment. Since the internal volume was large, it took time to reach the target oxygen concentration.
Compared to the case of keeping vegetables and meat at 3 degrees Celsius without operating the deoxidizer, the oxygen temperature was changed to 10% and the temperature inside the chamber was changed for a week after storing. The taste test was conducted. As a result, it was found that when the oxygen concentration was halved to 10%, the storage performance equivalent to that at 3 ° C. was obtained even when the internal temperature was set to 5 ° C. It has been found that even if it is offset by the electric power for operating the deoxidizer, it has a significant energy saving property.
【００１９】[0019]
【発明の効果】以上のように本発明によると、実用的で
コンパクトな脱酸素機能を冷蔵庫に付与することによっ
て、野菜などの食品をより良好な状態で長期間保存で
き、省エネルギー性も高いのでその効果は大きい。As described above, according to the present invention, by providing a refrigerator with a practical and compact deoxidizing function, foods such as vegetables can be stored in a better condition for a long period of time and energy saving is high. The effect is great.
【図１】本発明の一実施の形態の脱酸素装置の断面図FIG. 1 is a cross-sectional view of a deoxidizer according to an embodiment of the present invention.
【図２】本発明の一実施の形態の冷蔵庫の断面図FIG. 2 is a sectional view of the refrigerator according to the embodiment of the present invention.
１・・・固体高分子電解質膜 ２・・・陽極 ３・・・陰極 ４・・・集電体 ５・・・水容器 ６・・・脱酸素装置 ７・・・野菜室 ８・・・冷却板 ９・・・ドレイン水 １０・・・ろ過器 １１・・・水リザーバータンク １２・・・水位センサー １３・・・冷凍室 １４・・・仕切り １５・・・酸素センサー １６・・・湿度センサー １７・・・ガス流路 １８・・・冷却板 １９・・・凝縮水 1 ... Solid polymer electrolyte membrane 2 ... Anode 3 ... Cathode 4 ... Current collector 5 ... Water container 6 ... Deoxidizer 7 ... Vegetable room 8 ... Cooling Plate 9 ... Drain water 10 ... Filter 11 ... Water reservoir tank 12 ... Water level sensor 13 ... Freezer compartment 14 ... Partition 15 ... Oxygen sensor 16 ... Humidity sensor 17 ... Gas flow path 18 ... Cooling plate 19 ... Condensed water
Claims (4)
ことにより冷蔵庫内の温度を下げる冷却手段と、ガス拡
散電極からなる陽極および陰極に狭持された、水素イオ
ン伝導性を有する固体高分子電解質膜と、前記電解質膜
に水分を供給する手段と、前記両電極に直流電圧を印加
して水を電気分解するための電圧印加手段と、陰極の表
面もしくは陰極近傍に設けた触媒層とを備え、陰極側空
間と庫内部とが空間的につながっており、通電によって
陰極側で生成した水素イオンもしくは水素と、陰極側空
間および庫内部の空間に存在する酸素とを前記触媒層に
より反応させ水に還元することによって、庫内部の酸素
濃度減じることができ、前記電解質膜に補給する水分
が、前記冷却手段によって庫内、或いは庫外の水分を結
露させて得た水分の供給によることを特徴とする冷蔵
庫。1. A solid having hydrogen ion conductivity, which is sandwiched between a cooling means for compressing, liquefying, radiating and vaporizing a refrigerant vapor to lower the temperature in the refrigerator and an anode and a cathode composed of gas diffusion electrodes. Polymer electrolyte membrane, means for supplying water to the electrolyte membrane, voltage applying means for applying a DC voltage to both electrodes to electrolyze water, and catalyst layer provided on or near the cathode surface And the cathode side space and the interior of the chamber are spatially connected, hydrogen ions or hydrogen generated on the cathode side by energization, and oxygen present in the cathode side space and the space inside the chamber by the catalyst layer. By reacting and reducing to water, the oxygen concentration inside the chamber can be reduced, and the moisture supplied to the electrolyte membrane is the moisture obtained by dew condensation on the inside or outside of the chamber by the cooling means. Refrigerator, characterized in that by the sheet.
でつなぎ、それらのガス流路に空気送風装置、ミストト
ラップを設けたことを特徴とする請求項１記載の冷蔵
庫。2. The refrigerator according to claim 1, wherein the cathode side space and the inside of the refrigerator are connected by two or more gas passages, and an air blower and a mist trap are provided in these gas passages.
発性無機酸水溶液、あるいは、クエン酸、コハク酸若し
くは、酒石酸の不揮発性有機酸水溶液からなる酸性水溶
液に浸っており、この酸性水溶液が電解質膜に水分を供
給あるいは保持する手段ともなっていることを特徴とす
る請求項１又は２記載の冷蔵庫。3. The anode is immersed in an aqueous solution of a non-volatile inorganic acid of sulfuric acid, phosphoric acid or boric acid, or an aqueous solution of a non-volatile organic acid of citric acid, succinic acid or tartaric acid. The refrigerator according to claim 1 or 2, which also serves as a means for supplying or retaining water in the electrolyte membrane.
た集電体のみで構成されていることを特徴とする請求項
１，２又は３記載の冷蔵庫。4. The refrigerator according to claim 1, wherein there is no gas diffusion electrode on the anode side and only the current collector that also serves as an electrode is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9687096A JPH09287869A (en) | 1996-04-18 | 1996-04-18 | Refrigerator having oxygen-concentration adjusting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9687096A JPH09287869A (en) | 1996-04-18 | 1996-04-18 | Refrigerator having oxygen-concentration adjusting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09287869A true JPH09287869A (en) | 1997-11-04 |
Family
ID=14176477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9687096A Pending JPH09287869A (en) | 1996-04-18 | 1996-04-18 | Refrigerator having oxygen-concentration adjusting function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09287869A (en) |
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