JP2798493B2 - Oxygen concentrator - Google Patents
Oxygen concentratorInfo
- Publication number
- JP2798493B2 JP2798493B2 JP2256985A JP25698590A JP2798493B2 JP 2798493 B2 JP2798493 B2 JP 2798493B2 JP 2256985 A JP2256985 A JP 2256985A JP 25698590 A JP25698590 A JP 25698590A JP 2798493 B2 JP2798493 B2 JP 2798493B2
- Authority
- JP
- Japan
- Prior art keywords
- oxygen
- oxygen concentration
- concentrator
- concentration
- sensor
- 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
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- Measuring Oxygen Concentration In Cells (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Gases By Adsorption (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、大気から酸素濃度の高められた酸素濃縮空
気を分離回収し使用に供するための酸素濃縮装置に関す
る。さらに詳細には、分離回収された酸素濃縮空気中の
酸素濃度を効率的に測定し得る酸素濃度測定手段を具備
せしめた酸素濃縮装置を提供するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an oxygen concentrator for separating and recovering oxygen-enriched air having an increased oxygen concentration from the atmosphere for use. More specifically, an object of the present invention is to provide an oxygen concentrator provided with an oxygen concentration measuring means capable of efficiently measuring the oxygen concentration in the separated and recovered oxygen-enriched air.
〈従来技術〉 近年、ぜんそく，肺気腫症，慢性気管支炎等の呼吸器
系器官の疾患に苦しむ患者が多く、その好適な治療法の
１つに酸素療法がある。<Prior Art> In recent years, many patients suffer from diseases of respiratory organs such as asthma, emphysema, chronic bronchitis and the like, and oxygen therapy is one of the preferable treatments.
かかる酸素療法に用いられる酸素源としては、従来酸
素ボンベが用いられていたが、最近になって空気中から
酸素濃縮空気を取得する酸素濃縮装置が開発されたの
で、それを用いた酸素療法が大巾に普及するようになっ
てきている。Conventionally, an oxygen cylinder has been used as an oxygen source for such oxygen therapy.However, an oxygen concentrator that obtains oxygen-enriched air from the air has recently been developed. It is becoming widespread.
酸素濃縮装置には、気体選択吸着剤を酸素濃縮機能部
に用いた吸着型酸素濃縮装置と気体選択透過膜を酸素濃
縮機能部として用いた膜型酸素濃縮装置の両方がある
が、これらは病院や家庭において長期間にわたって使用
する必要があり、また所定の濃度まで酸素が濃縮された
酸素濃縮空気が使用者に供給されている必要がある。Oxygen concentrators include both adsorption-type oxygen concentrators that use a gas selective adsorbent for the oxygen concentrator and membrane-type oxygen concentrators that use a gas selective permeable membrane as the oxygen concentrator. And homes for a long period of time, and oxygen-enriched air in which oxygen is concentrated to a predetermined concentration must be supplied to the user.
しかしながら、長期にわたって所定の濃度の酸素濃縮
空気を供給し続けることは、例えば酸素濃縮機能部その
他の部材の機能低下等のために困難になる場合があり得
る。このような場合には、所定の濃度の酸素濃縮空気が
供給されにくいことを的確に把握して、機能低下した部
材の修理，交換を迅速に行なうことが望まれる。However, it may be difficult to continuously supply oxygen-concentrated air of a predetermined concentration for a long period of time, for example, due to a decrease in the function of the oxygen-concentrating function section and other members. In such a case, it is desired to accurately grasp that the oxygen-concentrated air having a predetermined concentration is not easily supplied, and to quickly repair or replace the deteriorated member.
そのためには、酸素濃縮空気中の濃度を測定する必要
がある。これまで、酸素濃縮装置に濃縮酸素の濃度測定
手段を組み込んだものがいくつか提案されてきている。
即ち、特開昭57−67004号公報には、吸着型酸素濃縮装
置において、濃縮酸素の濃度を検知し、あらかじめ設定
しておいた酸素濃度の下限値よりも低い濃度が検知され
た場合に圧縮機の稼動を停止するようにしたものが提案
されている。また特開昭59−16523号公報には、膜型酸
素富化装置において、固体電解質等の酸素濃度検出器を
備えたものが提案されている。For that purpose, it is necessary to measure the concentration in the oxygen-enriched air. Heretofore, some oxygen concentrators have been proposed in which a means for measuring the concentration of concentrated oxygen is incorporated.
That is, JP-A-57-67004 discloses that the concentration of concentrated oxygen is detected in an adsorption-type oxygen concentrator and compression is performed when a concentration lower than a preset lower limit of oxygen concentration is detected. There has been proposed one in which the operation of the machine is stopped. JP-A-59-16523 proposes a membrane-type oxygen enrichment apparatus provided with an oxygen concentration detector such as a solid electrolyte.
〈発明が解決しようとする課題〉 これまでの酸素濃度測定手段を具備した酸素濃縮装置
では、酸素濃度検出手段における酸素センサーを、酸素
濃度の高められた雰囲気中に長時間にわたってさらすこ
とになる。<Problems to be Solved by the Invention> In the conventional oxygen concentrator provided with the oxygen concentration measuring means, the oxygen sensor in the oxygen concentration detecting means is exposed to an atmosphere having an increased oxygen concentration for a long time.
例えばセラミック状のジルコニア式酸素サンサーの場
合、連続的に高い温度を維持して、酸素濃度を検知しよ
うとするものであり、酸素濃度に比例してセンサーに流
れる電流値が増加することを利用し酸素濃度を測定する
ものであるからして、高濃度で測定する程酸素センサー
の電流が増加する。また、酸素センサーの電流が多くな
るとセンサー素子の劣化は早く進み寿命は短くなる。For example, in the case of a ceramic zirconia oxygen sensor, the oxygen concentration is to be detected by maintaining a high temperature continuously, and the fact that the current value flowing to the sensor increases in proportion to the oxygen concentration is utilized. Since the oxygen concentration is measured, the higher the concentration, the greater the current of the oxygen sensor. In addition, when the current of the oxygen sensor increases, the deterioration of the sensor element progresses quickly, and the life is shortened.
すなわち、酸素濃縮装置のごとく、酸素濃度の高めら
れた雰囲気中で長時間にわたって使用する酸素センサー
は、劣化が早く進み、寿命は使用する酸素濃度に逆比例
する。That is, like an oxygen concentrator, an oxygen sensor that is used for a long time in an atmosphere with an increased oxygen concentration deteriorates quickly, and its life is inversely proportional to the oxygen concentration used.
例えば、大気中（21％O2中）で使用して、１年の寿命
であれば90％O2中で使用すると、１年×21/90÷2.8ケ月
で使用不可能となる。そのため、例えば酸素センサーの
交換を頻繁に行なわなければならない問題がある。な
お、かかる酸素センサーの交換は、作業の面と必要経費
の面の両方から、使用者等の大きな負担になりやすい。For example, if it is used in the atmosphere (in 21% O 2 ) and used in 90% O 2 if it has a life of one year, it becomes unusable in one year × 21/90 ÷ 2.8 months. Therefore, there is a problem that the oxygen sensor needs to be replaced frequently, for example. It is to be noted that such replacement of the oxygen sensor tends to be a heavy burden on the user and the like in terms of both work and required costs.
〈課題を解決するための手段〉 本発明者は、これまでに提案されている酸素濃度測定
手段を具備した酸素濃縮装置におけるかかる問題点を解
決することを目的として鋭意研究した結果、酸素濃度測
定手段に常時通電するのではなく、必要に応じて定期的
にまたは任意の時期においてのみ酸素濃度測定手段に通
電することが非常に有効であることを見い出し本発明に
到達したものである。<Means for Solving the Problems> The present inventor has conducted intensive studies with the aim of solving such a problem in an oxygen concentrator equipped with an oxygen concentration measuring means proposed so far, and as a result, the oxygen concentration measurement was carried out. The present inventors have found that it is very effective to energize the oxygen concentration measuring means periodically as needed or only at an arbitrary time, instead of constantly energizing the means, and have reached the present invention.
即ち、本発明は、空気から酸素濃度の高められた酸素
濃縮気体を分離するため圧力変動吸着型酸素濃縮機能部
と、該酸素濃縮機能部からの酸素濃縮気体を使用に供す
るための供給手段に導くための導管手段を有した酸素濃
縮装置において、該導管手段の途中または該導管手段か
ら分岐した補助導管手段の途中に配置された酸素濃縮気
体のジルコニア式酸素センサーと、該酸素濃縮気体の酸
素濃度を間歇的に測定するために該ジルコニア式酸素セ
ンサーに間歇的に通電するための通電制御手段とを具備
せしめたことを特徴とする酸素濃縮装置を提供するもの
である。That is, the present invention relates to a pressure fluctuation adsorption type oxygen concentrating function section for separating oxygen-enriched gas having an increased oxygen concentration from air, and a supply means for using the oxygen-enriched gas from the oxygen concentrating function section for use. An oxygen concentrating device having a conduit means for guiding a zirconia oxygen sensor of an oxygen-enriched gas disposed in the middle of said conduit means or in an auxiliary conduit means branched from said conduit means; Another object of the present invention is to provide an oxygen concentrator characterized by comprising an energization control means for intermittently energizing the zirconia oxygen sensor for intermittently measuring the concentration.
さらに本発明には、該酸素濃度測定手段の酸素センサ
ーが筒状部材の軸方向の一端に気密的に取り付けられ、
該筒状部材の他端がシールされており、該他端の近くの
筒状部材に該導管手段が取り付けられている酸素濃縮装
置が含まれる。Furthermore, in the present invention, the oxygen sensor of the oxygen concentration measuring means is hermetically attached to one end of the cylindrical member in the axial direction,
An oxygen concentrator is included wherein the other end of the tubular member is sealed and the conduit means is attached to the tubular member near the other end.
さらに本発明には、該酸素濃度測定手段が、該通電手
段によって通電を開始した後、２〜５分経過後において
測定された酸素濃度を酸素濃度測定値として採用するも
のである酸素濃縮装置が含まれる。Further, in the present invention, there is provided an oxygen concentrator wherein the oxygen concentration measuring means adopts an oxygen concentration measured 2 to 5 minutes after the start of energization by the energizing means as an oxygen concentration measurement value. included.
以下に、必要に応じて図面を用いながら、本発明につ
いて更に詳細に説明する。Hereinafter, the present invention will be described in more detail with reference to the drawings as necessary.
第１図は本発明の１実施態様である吸着床１個を用い
た圧力変動吸着型の酸素富化器の主なる構成要素とその
連結状態を模式的に例示したものである。即ち原料空気
Ａがソレノイド式４方切換弁４の流路21を通り圧縮機３
により圧縮された後、切換弁４の流路22を通り酸素濃縮
機能部である吸着床１に供給される。この吸着床１で窒
素が吸着されて酸素濃度が例えば90体積％以上の酸素富
化気体が電磁弁５を通り貯留タンク２に流入する。さら
に貯留タンクから減圧弁7,8を経て除菌フィルター９を
通り流量調節器11を経た後、酸素富化基体として使用に
供される。また吸着床１を脱着する工程では、電磁弁５
を閉じて、切換弁４を切り換えて、吸着床１の中の酸素
貧化気体等を流路23を通して圧縮機を減圧手段として用
いて切換弁４の流路24からＢとして放出する。このよう
に切換弁４と電磁弁５を調節することによって圧力変動
型吸着分離を行なうものである。なお圧縮機及びそれに
付随した電導機をファン14による大気流れ（Ｅ→Ｆとし
てその流路を示す）で冷却する。またＣなる酸素富化気
体は、通常は水中バブリング方式の加温器を通して加温
された後、使用に供するための供給手段である鼻カニュ
ーラ等により使用者の鼻腔等に供給される。FIG. 1 schematically illustrates the main components of a pressure fluctuation adsorption type oxygen enricher using one adsorption bed according to an embodiment of the present invention and the connection state thereof. That is, the raw air A passes through the flow path 21 of the solenoid type four-way switching valve 4 and the compressor 3
Then, it is supplied to the adsorption bed 1 which is the oxygen concentrating function part through the flow path 22 of the switching valve 4. Nitrogen is adsorbed by the adsorption bed 1 and an oxygen-enriched gas having an oxygen concentration of, for example, 90% by volume or more flows into the storage tank 2 through the solenoid valve 5. Further, after passing from the storage tank through the pressure reducing valves 7 and 8, passing through the sterilization filter 9 and the flow controller 11, it is used as an oxygen-enriched substrate. In the step of desorbing the adsorption bed 1, the solenoid valve 5
Is closed, the switching valve 4 is switched, and oxygen-depleted gas or the like in the adsorption bed 1 is discharged as B from the flow path 24 of the switching valve 4 through the flow path 23 by using a compressor as a depressurizing means. By adjusting the switching valve 4 and the solenoid valve 5 in this manner, pressure fluctuation type adsorption separation is performed. The compressor and the electric conductor attached thereto are cooled by the air flow (the flow path is shown as E → F) by the fan 14. The oxygen-enriched gas C is usually heated through an underwater bubbling type heater, and then supplied to a user's nasal cavity or the like by a nasal cannula or the like, which is a supply means for use.
かかる酸素濃縮装置の酸素濃縮気体を使用に供するた
めの供給手段まで導くための導管手段10において、酸素
濃度測定手段12が具備され、さらにそれに間歇的に通電
するようにするための通電制御手段等を具備した制御手
段13が具備されている。In the conduit means 10 for leading the oxygen-enriched gas of the oxygen concentrator to the supply means for use, oxygen concentration measuring means 12 is provided, and furthermore, energization control means for intermittently energizing it. The control means 13 is provided.
この酸素濃度測定手段12には、限界電流測定タイプの
セラミック状のジルコニア型酸素センサーが第２図の如
く組み込まれたものが精度等の点で好ましく、通電によ
って約400℃程度に加熱された状態で、酸素濃度の測定
がなされる。なお、酸素センサーとしては、セラミック
状のジルコニア型酸素センサーを濃淡による起電力測定
の方式で用いるものや、磁気式酸素センサー，薄膜式酸
素センサー等もあげられる。The oxygen concentration measuring means 12 preferably incorporates a limiting current measurement type ceramic zirconia type oxygen sensor as shown in FIG. 2 in terms of accuracy and the like. Then, the oxygen concentration is measured. Examples of the oxygen sensor include a sensor using a ceramic zirconia-type oxygen sensor in a method of measuring electromotive force by shading, a magnetic oxygen sensor, a thin-film oxygen sensor, and the like.
また制御手段13には、間歇的通電の制御手段としての
機能の他、あらかじめ下限酸素濃度を設定しておいてそ
の下限値よりも測定値が低くなった場合に自動的に圧縮
機３を停止するようにするための機能を有していてもよ
い。In addition to the function as a control means for intermittent energization, the control means 13 sets a lower limit oxygen concentration in advance and automatically stops the compressor 3 when the measured value becomes lower than the lower limit value. May be provided.
さらに、制御手段13において、間歇的通電を開始した
時点から、例えば２〜５分程度の所定時間経過後におけ
る酸素濃度測定値を適正に測定された酸素濃度の値とし
て採用するようにできる機能を具備させることが望まし
い。Further, the control means 13 has a function capable of adopting an oxygen concentration measurement value after a lapse of a predetermined time of, for example, about 2 to 5 minutes from the time when the intermittent energization is started, as an appropriately measured oxygen concentration value. It is desirable to have.
かかる機能は、間歇的通電のために生ずる通電開始直
後における不安定な測定値を酸素濃度として採用しない
ようにして、測定精度を高くするうえで特に有効であ
る。Such a function is particularly effective in increasing the measurement accuracy by preventing the unstable measured value immediately after the start of energization caused by intermittent energization from being adopted as the oxygen concentration.
本発明の酸素濃縮装置の酸素濃度測定手段における酸
素センサーとしては、例えば第１図の導管手段10におい
て、第２図に示す如く、円筒状部材30の上端部にプリン
ト基板（ガラスエポキシ）32に固定されて酸素センサー
31が収納されたものが好ましい。同図において、プリン
ト基板32は、Ｏリング38を介してネジ込み押え部材33に
より筒状部材30に気密的に固定され、また筒状部材30の
下端部は気密部材34でシールされており、下端部近くに
おいて第１図の導管手段10に連結するためのジョイント
部材35,36が固定されており、酸素センサー31の上端に
コード37の連結端部が設けられている。なお、かかる筒
状部材30の内径が例えば20mm程度であり、ジョイント部
材35と酸素センサー31の上端部の間の距離が例えば20〜
30mm程度のものが実用的である。As the oxygen sensor in the oxygen concentration measuring means of the oxygen concentrator of the present invention, for example, as shown in FIG. 2, a printed circuit board (glass epoxy) 32 is provided on the upper end of the cylindrical member 30 in the conduit means 10 shown in FIG. Fixed oxygen sensor
The one in which 31 is stored is preferable. In the figure, the printed circuit board 32 is air-tightly fixed to the cylindrical member 30 by a screw-in pressing member 33 via an O-ring 38, and the lower end of the cylindrical member 30 is sealed with an air-tight member 34. Near the lower end, joint members 35 and 36 for connecting to the conduit means 10 of FIG. 1 are fixed, and a connecting end of a cord 37 is provided at the upper end of the oxygen sensor 31. The inner diameter of the cylindrical member 30 is, for example, about 20 mm, and the distance between the joint member 35 and the upper end of the oxygen sensor 31 is, for example, 20 to
The one of about 30mm is practical.
本発明の酸素濃縮装置の酸素濃度測定手段は、第２図
の如き構造で酸素センサーを、第１図の如く酸素濃縮空
気を使用に供するための導管手段に直接取り付けた拡散
式のものが取付けが容易である等から好ましい。その他
の取付け方式として、第３図の如く、かかる導管手段10
から補助導管手段を分岐させて、その補助導管手段の途
中等に酸素センサーを具備させてもよい。即ち第３図
（イ）は、補助導管手段41にオリフィス手段42及び酸素
センサー43が取り付けられた分流方式を示しており、第
３図（ロ）も同様に、補助導管手段44にオリフィス手段
45及び酸素センサーが取り付けられた廃棄方式を示して
いる。なお第３図（ロ）の場合の補助導管の先端部は開
放された状態にある。The oxygen concentration measuring means of the oxygen concentrating apparatus of the present invention is a diffusion type one in which an oxygen sensor having a structure as shown in FIG. 2 is directly attached to a conduit means for using oxygen-enriched air as shown in FIG. Is preferred because of the ease. As another mounting method, as shown in FIG.
, The auxiliary conduit means may be branched, and an oxygen sensor may be provided in the middle of the auxiliary conduit means. That is, FIG. 3 (a) shows a split flow system in which the orifice means 42 and the oxygen sensor 43 are attached to the auxiliary conduit means 41, and FIG.
Shows the disposal method with 45 and oxygen sensor attached. The tip of the auxiliary conduit in the case of FIG. 3 (b) is in an open state.
本発明の酸素濃縮装置の酸素濃縮機能部としては、前
記した如く酸素又は窒素の選択吸着能を有した吸着剤を
用いる場合もあげられる。なお吸着型酸素濃縮器の場合
に、前記の如く吸着床が１個であってもよいが、２個等
の複数個を並列に用いるもの等であってもよい。As the oxygen concentrating function section of the oxygen concentrating device of the present invention, there may be mentioned a case where an adsorbent having a selective adsorption ability of oxygen or nitrogen is used as described above. In the case of the adsorption type oxygen concentrator, the number of the adsorbing beds may be one as described above, or a plurality of adsorbing beds such as two may be used in parallel.
また本願発明の酸素濃縮装置は、特願平１−284047号
の出願明細書に記載される如く電話回線等の通信手段を
用いた酸素濃縮装置のモニタリングシステムにおいて、
酸素濃度をモニタリングの対象とする場合に特に有効で
ある。即ち、通信手段によって遠隔地から酸素濃度測定
時期を指定し、その時期に限って酸素濃度測定手段に通
電を行なって酸素濃度を測定し、自動的に酸素濃度の測
定値を通信手段によって送信するようにできる。Further, the oxygen concentrator according to the present invention is a monitoring system for an oxygen concentrator using communication means such as a telephone line as described in the specification of Japanese Patent Application No. 1-284047.
This is particularly effective when monitoring the oxygen concentration. That is, the oxygen concentration measurement time is designated from a remote place by the communication means, the oxygen concentration measurement means is energized only for that time, the oxygen concentration is measured, and the measured value of the oxygen concentration is automatically transmitted by the communication means. I can do it.
〈発明の効果〉 本発明の酸素濃縮装置は、用いられている酸素センサ
ーの寿命を大巾に延長することができ、結果的に長期間
にわたる安定した濃縮運転を容易にする効果を奏するも
のである。<Effect of the Invention> The oxygen concentrating device of the present invention can greatly extend the life of the oxygen sensor used, and as a result, has the effect of facilitating a stable enrichment operation for a long period of time. is there.
第１図は、本発明の酸素濃縮装置の実施態様を模式的に
例示したものである。第２図は、第１図において用いら
れる酸素センサーの設置方式の具体例を断面図で示した
ものである。第３図は本発明の酸素濃縮装置における酸
素濃度測定手段としての酸素センサーの設置方式を例示
したものである。FIG. 1 schematically illustrates an embodiment of the oxygen concentrator according to the present invention. FIG. 2 is a sectional view showing a specific example of an installation method of the oxygen sensor used in FIG. FIG. 3 illustrates an installation method of an oxygen sensor as an oxygen concentration measuring means in the oxygen concentrating device of the present invention.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) G01N 27/409 G01N 27/41 G01N 27/419 C01B 13/02──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 6 , DB name) G01N 27/409 G01N 27/41 G01N 27/419 C01B 13/02
Claims (2)
体を分離するため圧力変動吸着型酸素濃縮機能部と、該
酸素濃縮機能部からの酸素濃縮気体を使用に供するため
の供給手段に導くための導管手段を有した圧力変動吸着
型酸素濃縮装置において、該導管手段の途中または該導
管手段から分岐した補助導管手段の途中に配置されたジ
ルコニア式酸素センサーと、該酸素濃縮気体の酸素濃度
を間歇的に測定するために該ジルコニア式酸素センサー
に間歇的に通電するための通電制御手段とを具備せしめ
たことを特徴とする圧力変動吸着型酸素濃縮装置。1. A pressure swing adsorption type oxygen concentrator for separating oxygen-enriched gas having an increased oxygen concentration from air, and a supply means for supplying the oxygen-enriched gas from the oxygen concentrator to use. Pressure-variable adsorption type oxygen concentrator having a conduit means for the zirconia oxygen sensor disposed in the middle of the conduit means or in the auxiliary conduit means branched from the conduit means, and the oxygen concentration of the oxygen-enriched gas. Pressure fluctuation adsorption type oxygen concentrator characterized by comprising an energization control means for intermittently energizing the zirconia oxygen sensor in order to intermittently measure the oxygen concentration.
段によって通電を開始した後、２〜５分経過後において
測定された酸素濃度を酸素濃度測定値として採用するも
のである請求項１の圧力変動吸着型酸素濃縮装置。2. The pressure sensor according to claim 1, wherein said zirconia-type oxygen sensor adopts an oxygen concentration measured two to five minutes after the start of energization by said energizing means as an oxygen concentration measurement value. Variable adsorption oxygen concentrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2256985A JP2798493B2 (en) | 1990-09-28 | 1990-09-28 | Oxygen concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2256985A JP2798493B2 (en) | 1990-09-28 | 1990-09-28 | Oxygen concentrator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04136753A JPH04136753A (en) | 1992-05-11 |
| JP2798493B2 true JP2798493B2 (en) | 1998-09-17 |
Family
ID=17300128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2256985A Expired - Lifetime JP2798493B2 (en) | 1990-09-28 | 1990-09-28 | Oxygen concentrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2798493B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT408954B (en) * | 2000-09-26 | 2002-04-25 | Axiom Angewandte Prozesstechni | DEVICE AND METHOD FOR GAS PERMEATION |
| KR100455680B1 (en) * | 2001-11-30 | 2004-11-06 | (주)바이오텔 | Apparatus for supplying oxygen |
| JP5907129B2 (en) * | 2013-08-22 | 2016-04-20 | 株式会社デンソー | Electronic circuit board built-in connector and method for manufacturing electronic circuit board built-in connector |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5518170U (en) * | 1978-07-25 | 1980-02-05 | ||
| JPS5730933A (en) * | 1980-07-31 | 1982-02-19 | Matsushita Electric Ind Co Ltd | Temperature, humidity detector |
| JPS5916523A (en) * | 1982-07-20 | 1984-01-27 | Matsushita Seiko Co Ltd | Oxygen enriching device |
| JPS60200158A (en) * | 1984-03-24 | 1985-10-09 | Japan Storage Battery Co Ltd | Operation of galvanic battery type oxygen sensor |
-
1990
- 1990-09-28 JP JP2256985A patent/JP2798493B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04136753A (en) | 1992-05-11 |
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