JP3178302B2 - Medical oxygen concentrator - Google Patents

Medical oxygen concentrator

Info

Publication number
JP3178302B2
JP3178302B2 JP14481695A JP14481695A JP3178302B2 JP 3178302 B2 JP3178302 B2 JP 3178302B2 JP 14481695 A JP14481695 A JP 14481695A JP 14481695 A JP14481695 A JP 14481695A JP 3178302 B2 JP3178302 B2 JP 3178302B2
Authority
JP
Japan
Prior art keywords
compressed air
oxygen
supplied
hollow fiber
membrane module
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 - Fee Related
Application number
JP14481695A
Other languages
Japanese (ja)
Other versions
JPH08141087A (en
Inventor
暢 佐藤
重雄 佐藤
和潔 高野
Original Assignee
住友ベークライト株式会社
山陽電子工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to JP22632594 priority Critical
Priority to JP6-226325 priority
Application filed by 住友ベークライト株式会社, 山陽電子工業株式会社 filed Critical 住友ベークライト株式会社
Priority to JP14481695A priority patent/JP3178302B2/en
Publication of JPH08141087A publication Critical patent/JPH08141087A/en
Application granted granted Critical
Publication of JP3178302B2 publication Critical patent/JP3178302B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10Preparation of respiratory gases or vapours
    • A61M16/14Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16Devices to humidify the respiration air
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10Preparation of respiratory gases or vapours
    • A61M16/1005Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • A61M16/101Preparation of respiratory gases or vapours with O2 features or with parameter measurement using an oxygen concentrator
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10Preparation of respiratory gases or vapours
    • A61M16/14Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/142Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase with semi-permeable walls separating the liquid from the respiratory gas
    • A61M16/145Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase with semi-permeable walls separating the liquid from the respiratory gas using hollow fibres

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【産業上の利用分野】本発明は、呼吸不全患者(以下、
単に患者ともいう)が主として在宅酸素療法に使用する
医療用の酸素濃縮器に関するもので、なかでも圧力変動
吸着法(以下、PSA法ともいう)によって濃縮された
酸素ガス(酸素富化ガスを含む、以下同じ)の新規な構
成の加湿手段に関するものである。
BACKGROUND OF THE INVENTION The present invention relates to a patient with respiratory failure
The present invention relates to a medical oxygen concentrator mainly used for home oxygen therapy by a patient (hereinafter simply referred to as a patient). Among them, an oxygen gas (including an oxygen-enriched gas) concentrated by a pressure fluctuation adsorption method (hereinafter, also referred to as a PSA method). , The same shall apply hereinafter).
【0002】[0002]
【従来の技術】医療用の酸素濃縮器は、主に前記の患者
が在宅酸素療法に使用する酸素ガスの供給源として用い
るものである。このため酸素濃縮器に対しては、種々の
条件が要求され、その内容としては次のような事柄が挙
げられる。 医療用に使用するのであるから、信頼性が高いこと。 長期にわたって昼夜を問わず連続的に使用することが
多いので、患者本人は勿論、同居や同室の家族の人々も
含めて安眠を妨げることがないように、騒音の少ない静
かな装置であること。 PSA法による酸素濃縮器から吐出する酸素ガスは、
水分がほぼ完全に除去された非常に乾燥したガスである
ので、これをそのまま患者が呼吸用として使用すると、
鼻腔粘膜や気道が乾き苦痛を伴うので、該酸素ガスを加
湿する機能を有すること。 家庭用の電源を使用するために、消費電力の少ないこ
と。
2. Description of the Related Art A medical oxygen concentrator is mainly used as a supply source of oxygen gas used by patients for home oxygen therapy. Therefore, various conditions are required for the oxygen concentrator, and the contents thereof include the following. High reliability because it is used for medical purposes. Because it is often used continuously for a long period of time, both day and night, it should be a quiet device with low noise so that it does not disturb sleep, including the patients themselves, as well as family members living in the same room. The oxygen gas discharged from the oxygen concentrator by the PSA method is as follows:
It is a very dry gas from which water has been almost completely removed.
Since the nasal mucosa and the respiratory tract are dry and painful, they have a function of humidifying the oxygen gas. Low power consumption due to use of household power supply.
【0003】第項の酸素ガスの加湿については、多く
の場合、酸素ガスを水の入った容器の中を気泡の形でく
ぐらせて加湿した後に、呼吸用として吸入している。し
かしながら、患者にとっては、酸素濃縮器から出てくる
酸素ガスを加湿するためには、多くの手間がかかり煩わ
しいため、加湿器への水の補充や交換、容器の清掃作業
等から解放されたいという強い要望がある。
[0003] Regarding the humidification of oxygen gas described in the item, in many cases, oxygen gas is passed through a container containing water in the form of air bubbles, humidified, and then inhaled for respiration. However, for the patient, humidifying the oxygen gas coming out of the oxygen concentrator requires a lot of trouble and is troublesome. There is a strong demand.
【0004】従来から多く使用されている加湿器には、
次のような問題点がある。 加湿器内の水は、使用するにつれて蒸発消耗するので
補給する必要があり、また、この加湿器の容器内に雑菌
や藻類が繁殖したり、ゴミ等の付着による汚れがあった
りするので、おおむね1週間に1回程度の清掃が必要と
なる。 加湿器の清掃や水の補充・交換時には、加湿器の蓋を
十分に、かつ確実に締めないと酸素ガスが漏れて患者の
方へ行かないという不具合が生じる。 酸素濃縮器や加湿器を使用する患者は、体力も比較的
弱く、また、高齢者が多いため、加湿器の蓋が十分確実
に締まらないことがあり、この問題は切実、かつ重大な
事柄である。
[0004] Humidifiers that have been widely used in the past include:
There are the following problems. The water in the humidifier evaporates and depletes as it is used and must be replenished.Moreover, bacteria and algae grow in the container of the humidifier, and there is dirt due to the attachment of garbage. Cleaning is required about once a week. At the time of cleaning the humidifier and refilling / replacement of water, there is a problem that if the lid of the humidifier is not sufficiently and securely tightened, oxygen gas leaks and does not go to the patient. Patients who use oxygen concentrators and humidifiers have relatively weak physical strength, and many elderly people may not be able to securely close the humidifier lid.This problem is acute and serious. is there.
【0005】この加湿器は、酸素濃縮器の外殻を構成
する筐体から外部に向かって凸状に出張って取付けられ
るものと、筐体に凹状のくぼみ部を設けてこの凹部の中
に取付けるものとがあるが、前者の凸状に取付けるもの
は、人が装置の近くを歩くとき、誤ってぶつかったりし
て加湿器の取付部(主に酸素ガスの供給口を兼ねるもの
が多い)を折損する事故がある。また、後者の凹部の中
に取付けるものは、ゴミ等が集積し易く、医療用機械を
不衛生にすることになる。このため、凹部の前に扉を付
設してゴミ等が入りにくくする方法もあるが、扉が破損
したり、水の補充や交換時に煩わしいという問題もあ
る。
[0005] This humidifier can be mounted in a convex shape from the housing forming the outer shell of the oxygen concentrator to the outside, or can be mounted in the concave portion by providing a concave recess in the housing. There is a thing, but the former, which is mounted in a convex shape, may cause the mounting part of the humidifier (which often also serves as the oxygen gas supply port) by accidentally hitting when walking near the device. There is a breakage accident. In the latter case, dust and the like are easily accumulated in the concave portion, which makes the medical machine unsanitary. For this reason, there is a method of attaching a door in front of the concave portion to make it difficult for dust and the like to enter, but there are problems that the door is damaged and that it is troublesome when refilling or replacing water.
【0006】在宅酸素療法に使用する酸素濃縮器は、
昼夜を問わずに使用するために、周囲の暗騒音が比較的
多い昼間にはそれほど気にならなかった、前記の加湿器
の気泡から生ずる音が、周囲が静になる夜間には騒音と
して耳につき、患者の中にはこの騒音のために安眠を妨
げられている者もある。このために、前述の如く酸素濃
縮器の筐体の凹部に加湿器を収容し、その前面に扉を付
設してゴミ等の侵入を防ぐとともに、この騒音の低減効
果を期待したものもある。
[0006] The oxygen concentrator used for home oxygen therapy is
The sound generated by the air bubbles of the humidifier was not so noticeable during the daytime when the background noise was relatively large because it was used day and night. Therefore, some patients have been unable to sleep well due to this noise. For this reason, as described above, a humidifier is housed in the recess of the casing of the oxygen concentrator, and a door is attached to the front of the humidifier to prevent intrusion of dust and the like, and there is also a device that is expected to reduce the noise.
【0007】[0007]
【発明が解決しようとする課題】このような従来の加湿
器で生じる種々の問題点を解決し、水の補充や交換を必
要とせず、かつ動作音のより小さい静粛な医療用の酸素
濃縮器を提供することを目的とする。
SUMMARY OF THE INVENTION To solve the various problems which occur in such a conventional humidifier, a quiet medical oxygen concentrator which does not require replenishment or replacement of water and has a low operating noise. The purpose is to provide.
【0008】[0008]
【課題を解決するための手段】即ち本発明は、吸着剤を
充填した少なくとも1個の吸着筒、該吸着筒に圧縮空気
を供給するための電動機の動力で駆動される圧縮空気供
給手段、該電動機及び/又は圧縮空気供給手段を冷却す
るためのファン手段とで基本的に構成された圧力変動吸
着法(PSA法)による酸素濃縮器において、水分透過
可能な中空糸透過膜を隔膜とする膜モジュールに供給し
て、該圧縮空気中に含有する水分を中空糸透過膜により
分離除去し、圧縮空気から分離された水分を、前記吸着
筒にて濃縮され加湿手段に供給された酸素富化ガスに与
えて加湿するように構成すると共に、該膜モジュールに
よる加湿手段は、前記の電動機及び/又は圧縮空気供給
手段、ファン手段等の動作時に騒音を発生する機器類と
共に、防音機能を有する筐体内に収容したことを特徴と
する医療用の酸素濃縮器である。さらに、前記の圧縮空
気供給手段、膜モジュールによる加湿手段、及び圧縮空
気供給手段から加湿手段までの圧縮空気の通過する通路
を、外気温度より一定値以上高い温度に保つように構成
したことを第2の特徴とし、そして各手段を、前記の電
動機及び/又は圧縮空気供給手段等の動作時に熱を発生
する機器類と共に、筐体内に収容することにより、外気
温度より高い温度の保持を図っている。
That is, the present invention provides at least one adsorption cylinder filled with an adsorbent, compressed air supply means driven by the power of an electric motor for supplying compressed air to the adsorption cylinder, An oxygen concentrator based on a pressure fluctuation adsorption method (PSA method) basically comprising a motor and / or a fan means for cooling a compressed air supply means, wherein a water-permeable hollow fiber permeable membrane is used as a membrane. The oxygen-enriched gas supplied to the module, and the moisture contained in the compressed air is separated and removed by the hollow fiber permeable membrane, and the moisture separated from the compressed air is concentrated in the adsorption column and supplied to the humidifying means. And the humidifying means by the membrane module has a soundproofing function together with the above-mentioned electric motor and / or equipment for generating noise when operating such as compressed air supply means and fan means. A medical oxygen concentrator for, characterized in that accommodated in the housing to be. Further, the compressed air supply means, the humidification means by the membrane module, and the passage through which the compressed air passes from the compressed air supply means to the humidification means are configured to be maintained at a temperature higher than the outside air temperature by a certain value or more. 2 and each unit is housed in a housing together with the above-mentioned electric motor and / or devices that generate heat during operation of the compressed air supply unit, etc., thereby maintaining a temperature higher than the outside air temperature. I have.
【0009】以下、図面に基づいて本発明を詳細に説明
する。図1〜図3は本発明の好適な実施例となる酸素濃
縮器のフローシートで、図4は酸素濃縮器の外部筐体内
部の構成の一例を模式的に示した図(右半部の縦断面
図)、また図5は防音機能を有する筐体(外部筐体の左
半部に収容)内部の構成を説明するための図である。
Hereinafter, the present invention will be described in detail with reference to the drawings. 1 to 3 are flow sheets of an oxygen concentrator according to a preferred embodiment of the present invention. FIG. 4 is a diagram schematically showing an example of a configuration inside an outer casing of the oxygen concentrator (a right half part). FIG. 5 is a view for explaining the internal configuration of a housing having a soundproof function (accommodated in the left half of the external housing).
【0010】PSA法による酸素濃縮器は、電動機の動
力で駆動される圧縮空気供給手段2、吸着剤を充填した
1個もしくは複数個の吸着筒12,13、及び電動機及
び/又は圧縮空気供給手段2を冷却するためのファン手
段31で基本的に構成され、これに必要に応じて、吸着
筒12,13で発生した酸素富化ガスを貯留するための
バッファタンク16、酸素富化ガスに水分を与えて加湿
するための加湿手段3を加えた構成となっている。
The oxygen concentrator based on the PSA method comprises a compressed air supply means 2 driven by the power of a motor, one or more adsorption cylinders 12 and 13 filled with an adsorbent, and a motor and / or compressed air supply means. A buffer means 16 for storing the oxygen-enriched gas generated in the adsorption cylinders 12 and 13 if necessary, and a fan means 31 for cooling the oxygen-enriched gas. And a humidifying unit 3 for humidifying by applying the pressure.
【0011】そして、吸入フィルター1から取り入れら
れた空気は、まず圧縮空気供給手段2で加圧圧縮され、
例えば吸着筒が2個の場合は、PSA法の操作を制御す
る弁手段11により2個の吸着筒12,13に交互に供
給される。吸着筒では窒素等が吸着除去されて酸素ガス
を発生し(加圧吸着工程)、この酸素富化ガスはバッフ
ァタンク16に貯留され、その一部はオリフィス14を
通して、加圧吸着工程を終了し減圧排気中の吸着筒に逆
流させ、吸着された窒素等の脱着を助けて吸着剤の再生
を行ない(減圧脱着工程)、その排気ガスはサイレンサ
ー17を介して大気中に排出される。バッファタンク1
6に貯留された酸素富化ガスは、減圧弁10と絞り弁9
で適宜の圧力、流量になるように調整して、患者に供給
される。
The air introduced from the suction filter 1 is first compressed and compressed by a compressed air supply means 2.
For example, when the number of the adsorption cylinders is two, the supply is alternately supplied to the two adsorption cylinders 12 and 13 by the valve means 11 for controlling the operation of the PSA method. In the adsorption cylinder, nitrogen and the like are adsorbed and removed to generate oxygen gas (pressure adsorption step), and this oxygen-enriched gas is stored in the buffer tank 16, and a part of the gas passes through the orifice 14 to complete the pressure adsorption step. The adsorbent is made to flow back to the adsorption column under reduced pressure exhaust, and the adsorbent is regenerated by assisting desorption of the adsorbed nitrogen and the like (decompression desorption step), and the exhaust gas is exhausted to the atmosphere via the silencer 17. Buffer tank 1
The oxygen-enriched gas stored in 6 is supplied to a pressure reducing valve 10 and a throttle valve 9.
Then, the pressure and flow rate are adjusted so as to be supplied to the patient.
【0012】これらの各装置は外部筐体23の中に収納
されているのであるが、動作時には騒音が多いため、外
部筐体23の外殻を防音材で構成して遮音性を持たせる
他、例えば図4に示すように、電動機や圧縮空気供給手
段2等を冷却するための、大気流入通路34や大気排出
通路35に遮音板33を設け、あるいは外部筐体23の
底部に消音用ダクト36を設けるなど、騒音を低下させ
るためにさまざまな工夫が為されている。
Each of these devices is housed in the external housing 23. However, since the devices are noisy during operation, the outer shell of the external housing 23 is made of a soundproof material to provide sound insulation. For example, as shown in FIG. 4, a sound insulating plate 33 is provided in the air inflow passage 34 and the air discharge passage 35 for cooling the electric motor and the compressed air supply means 2 and the like, or a sound deadening duct is provided in the bottom of the outer casing 23. Various measures have been devised to reduce noise, such as providing 36.
【0013】そしてさらに防音機能を高めるため、動作
時に騒音の発生源となる電動機を含む圧縮空気供給手段
2、ファン手段31,圧縮空気や排気ガス、酸素富化ガ
ス等の流れをコントロールする弁手段11などは、図5
に示すような、外部筐体23内の防音機能を有する防音
筐体29,30内に収容して二重構造にするのが良い。
尚、大気取入口24から取り入れられた空気は、大気流
入通路34を通り空気送気口25を経て、空気吸入口2
6から防音筐体30に入り、さらにファン手段31によ
り連絡開口部32から防音筐体29に入り、その一部は
原料空気として圧縮空気供給手段2に取り込まれ、大部
分は電動機を含む圧縮空気供給手段やその他電気エネル
ギーを消費する発熱機器類を冷却し、熱交換して暖めら
れた温風は空気流出口27から空気排出口28、消音用
ダクト36を経て大気中に排出される。しかし、筐体内
部の温度は外気温度に対して高くなるが、通常その外気
温より高くなる温度は30℃以下、適正には20℃程度
になるように冷却手段が構成され、膜モジュールによる
加湿手段もこの温度の筐体内に収容する。図5の例で
は、2つの防音筐体29,30を結合して用いたが、フ
ァン手段31も防音筐体内部に収容して、1個の防音筐
体で構成してもよい。
In order to further enhance the soundproofing function, compressed air supply means 2 including a motor as a source of noise during operation, fan means 31, valve means for controlling the flow of compressed air, exhaust gas, oxygen-enriched gas and the like. 11 etc. are shown in FIG.
It is preferable to house it in soundproof housings 29 and 30 having a soundproof function in the external housing 23 as shown in FIG.
The air taken in from the air inlet 24 passes through the air inflow passage 34, passes through the air inlet 25, and passes through the air inlet 2.
6 enters the soundproof housing 30, and further enters the soundproof housing 29 through the communication opening 32 by the fan means 31, a part of which is taken into the compressed air supply means 2 as raw material air, and most of the compressed air including the electric motor is provided. The warm air heated by cooling and exchanging heat with the supply means and other heat-producing devices that consume electric energy is discharged from the air outlet 27 through the air outlet 28 and the silencing duct 36 to the atmosphere. However, although the temperature inside the housing is higher than the outside air temperature, the cooling means is configured so that the temperature higher than the outside air temperature is usually 30 ° C. or less, and appropriately about 20 ° C. The means are also housed in a housing at this temperature. In the example of FIG. 5, the two soundproof housings 29 and 30 are combined and used, but the fan means 31 may also be housed inside the soundproof housing and configured by one soundproof housing.
【0014】また、消音用ダクト36は、外部筐体23
の底面下に取付けられたキャスターが作る、外部筐体と
大地又は床面との間の空間を有効に活用したもので、外
部筐体23の底面に接して遮音材で構成され、かつ、そ
の大気通路内面には吸音材を貼付けし、遮音板も付設し
てある。本発明で用いた遮音板は、遮音材の両面又は片
面に吸音材を貼付け、その面内に複数個の貫通孔を明け
たもので、音波を吸収しながら冷却風を通すという作用
があるが、これに限定する必要はなく他の態様のもので
あってもよいことは勿論である。
Further, the sound deadening duct 36 is connected to the outer casing 23.
The caster attached under the bottom of the, made effective use of the space between the outer housing and the ground or floor, is in contact with the bottom surface of the outer housing 23, is composed of sound insulating material, and A sound absorbing material is attached to the inner surface of the air passage, and a sound insulating plate is also provided. The sound insulating plate used in the present invention has a function of pasting a sound absorbing material on both surfaces or one surface of the sound insulating material and forming a plurality of through holes in the surface, and has a function of passing cooling air while absorbing sound waves. However, it is needless to say that the present invention is not limited to this, and other forms may be used.
【0015】また、バッファタンク16から減圧調整し
て患者に供給される酸素富化ガスは、水分がほぼ完全に
除去され乾燥した状態になっているので、通常は減圧弁
10の後に、気体を水中にくぐらせて水分を与える気泡
式等の加湿器を設けるが、その気泡のはじける音でさえ
も低騒音化の対象となっている。本発明では、従来の気
泡式加湿器の代わりに、中空糸透過膜を用いた加湿手段
3を使用するが、同様に騒音をより小さくするため、及
び後述する理由により、外気より温度の高い防音筐体2
9内に収容する。
The oxygen-enriched gas supplied to the patient by adjusting the pressure from the buffer tank 16 to the patient is almost completely removed from the water and is in a dry state. A humidifier such as a bubble type that provides moisture by passing through water is provided, but even the sound of the bursting bubbles is a target for noise reduction. In the present invention, the humidifying means 3 using a hollow fiber permeable membrane is used in place of the conventional bubble humidifier. Similarly, for the purpose of reducing noise and for the reason described later, soundproofing at a higher temperature than the outside air is used. Case 2
9 housed.
【0016】本発明における課題を解決するための手段
として使用する、中空糸透過膜を隔膜とする膜モジュー
ルを用いた加湿器3について、さらに詳細に説明する。
The humidifier 3 using a membrane module having a hollow fiber permeable membrane as a diaphragm, which is used as a means for solving the problem in the present invention, will be described in further detail.
【0017】[0017]
【作用】膜モジュールを構成する中空糸透過膜は、大気
中の水分を最も良く透過するもので、その透過率は中空
糸透過膜の外側と内側との大気中の水分の分圧差に比例
する。中空糸透過膜壁を隔てて、外側を水分を含む加圧
空気の通る一次側、内側を乾いた酸素富化ガスの通る二
次側とすると、水分分圧は一次側が高く、二次側が低
い。水分透過の原理は、一次側より水分分子が透過膜の
膜壁中を拡散移動し、二次側壁面より放散することによ
り水分分子が膜壁を透過する。パーフルオロイオン交換
膜による透過膜の単位面積当りの水分透過量はかなり多
いので、一次側,二次側の分圧差が少なくても効率の良
い透過が得られる。また二次側を高い湿度に加湿するた
めには一次側の水分分圧を高くする必要がある。
The hollow fiber permeable membrane that constitutes the membrane module is the one that permeates the moisture in the atmosphere best, and its transmittance is proportional to the difference in partial pressure of the atmospheric moisture between the outside and the inside of the hollow fiber permeable membrane. . If the outside is the primary side through which the pressurized air containing moisture passes through the hollow fiber permeable membrane wall and the secondary side through which the dry oxygen-enriched gas passes through the inside, the moisture partial pressure is high on the primary side and low on the secondary side . The principle of water permeation is that water molecules diffuse from the primary side through the membrane wall of the permeable membrane and diffuse through the secondary side wall surface, so that the water molecules permeate the membrane wall. Since the permeation amount of water per unit area of the permeable membrane by the perfluoro ion exchange membrane is considerably large, efficient permeation can be obtained even if the partial pressure difference between the primary side and the secondary side is small. In order to humidify the secondary side to a high humidity, it is necessary to increase the partial pressure of water on the primary side.
【0018】大気に含まれる水分を用いて乾いた酸素富
化ガスを加湿するのであるから、水分供給の一次側の水
分分圧は大気中に含まれる水分量、すなわち外気の温度
とその相対湿度に左右され、温度が低く相対湿度が低い
と二次側を十分に加湿できないことも生ずる。日本に於
ける北海道から沖縄に至る主要都市の一年の月別平均相
対湿度は、ほとんどが60〜90%に分布している。そ
して湿度の低い季節は3月・4月であり、また緑の少な
い東京等、都市の相対湿度は低い。また、一年を通した
月別平均気温は−9〜29℃の広い範囲に分布してお
り、北海道など冬期は室内暖房により乾燥し、相対湿度
は相当低くなる。0℃で80%の相対湿度の大気中に含
まれる水分分圧は4.89ミリバールである。これを4
kgf/cm2Gに加圧すると容積が1/5となり、水
分分圧は5倍の24.45ミリバールになる。この温度
の低い状態での実験では、二次側に透過して出る水分で
は、加湿されるべき酸素富化ガスの相対湿度が計算によ
る目標値に達しないことが時々生じた。鋭意研究の結
果、一次側の加圧空気が加湿手段に至るまでの経路で冷
やされて温度が低くなるため結露し、二次側ガスを加湿
するのに必要な十分なガスの水分分圧が得られない事が
あることが判った。
Since the dry oxygen-enriched gas is humidified using the moisture contained in the atmosphere, the moisture partial pressure on the primary side of the moisture supply is determined by the amount of moisture contained in the atmosphere, that is, the temperature of the outside air and its relative humidity. If the temperature is low and the relative humidity is low, the secondary side may not be sufficiently humidified. In Japan, the average monthly relative humidity of major cities from Hokkaido to Okinawa is mostly distributed at 60 to 90%. The low humidity season is March / April, and the relative humidity of cities such as Tokyo with little greenery is low. In addition, the monthly average temperature throughout the year is distributed in a wide range of -9 to 29 ° C., and in winter such as Hokkaido, the temperature is dried by indoor heating, and the relative humidity is considerably low. The partial pressure of water contained in the atmosphere at 0 ° C. and 80% relative humidity is 4.89 mbar. This is 4
When pressurized to kgf / cm 2 G, the volume is reduced to 1/5, and the water partial pressure is increased by a factor of 5 to 24.45 mbar. In experiments at this low temperature, the relative humidity of the oxygen-enriched gas to be humidified sometimes did not reach the calculated target value with the moisture permeating to the secondary side. As a result of diligent research, the primary pressurized air is cooled down in the path leading to the humidifying means and the temperature decreases, causing dew condensation, and the moisture partial pressure of the gas required to humidify the secondary gas is sufficient. It turns out that there are things that can not be obtained.
【0019】従って、この例で示す一次側水分分圧の2
4.45ミリバールを維持するには、22℃以上に加温
しなければ空気中の水分が結露し、その温度の飽和水蒸
気圧以上にはならない。このため一次側の水分分圧を高
めるためには空気を加圧するばかりでなく、その温度を
取り入れる外気より高い温度にしておかなければ、高い
水分分圧を維持できない。その高める温度の値は、被加
湿ガスである二次側ガスの温度と目標加湿値により決定
できる。PSA法による酸素濃縮器で得られる酸素富化
ガスの温度は、外気温より数度高い。通常1〜2℃の範
囲がほとんどである。いま外気より2℃高いとすると、
これを相対湿度90%まで高めるためには、水分透過膜
の透過性能にも大変影響されるが、現行の技術レベルで
の透過性能では温度を約5〜16℃以上に高めて一次側
を高い水分分圧に維持する必要がある。
Therefore, the primary water partial pressure of 2
In order to maintain 4.45 mbar, unless the temperature is raised to 22 ° C. or more, moisture in the air will condense and will not exceed the saturated steam pressure at that temperature. For this reason, in order to increase the water partial pressure on the primary side, not only the air must be pressurized but also a high water partial pressure cannot be maintained unless the temperature is set higher than the outside air. The value of the temperature to be increased can be determined based on the temperature of the secondary gas, which is the gas to be humidified, and the target humidification value. The temperature of the oxygen-enriched gas obtained by the oxygen concentrator by the PSA method is several degrees higher than the outside air temperature. Usually, the range of 1 to 2 ° C is almost the same. Assuming that it is 2 ° C higher than the outside air,
In order to increase the relative humidity to 90%, the permeation performance of the moisture permeable membrane is greatly affected. However, in the permeation performance at the current technical level, the temperature is increased to about 5 to 16 ° C. or higher and the primary side is increased. It is necessary to maintain the water partial pressure.
【0020】そこで、水蒸気を含む大気を取入れて圧縮
する圧縮空気供給手段と、中空糸透過膜を隔膜とする膜
モジュールから成る加湿手段において、該加湿手段の隔
膜の一方の側に圧縮空気供給手段で圧縮した圧縮空気を
通し、隔膜の他方の側に被加湿ガスを通すように構成
し、圧縮空気供給手段と加湿手段、及び圧縮空気供給手
段から加湿手段までの圧縮空気の通過する経路の温度
を、大気温度より一定値以上高めておく構成とする。
Therefore, in a humidifying means comprising a compressed air supply means for taking in and compressing the atmosphere containing water vapor and a membrane module having a hollow fiber permeable membrane as a diaphragm, a compressed air supply means is provided on one side of the membrane of the humidification means. Through the compressed air compressed in the above, and through the humidified gas to the other side of the diaphragm, the compressed air supply means and the humidification means, and the temperature of the passage of the compressed air from the compressed air supply means to the humidification means Is set to be higher than the atmospheric temperature by a certain value or more.
【0021】本発明は、当該温度に維持するために、P
SA法による酸素濃縮器内で発生する熱を効率良く使用
するものである。これは電動機を含む圧縮空気供給手段
やその他電気エネルギーを消費する発熱機器類を収容す
る筐体内部に、当該膜モジュールによる加湿手段を収容
することにより行う。尚、この筐体は防音構造にして、
騒音を発生する機器でもある電動機及び/又は空気供給
手段,ファン手段等の騒音の漏出を防ぐ効果をも兼ねる
ものとするのが良い。但し、防音を必要としない機器に
おいては、防音筐体を用いる必要はない。また、膜モジ
ュール(加湿手段3)内の、中空糸透過膜4の外側通路
5と内側通路とでは、断面積の広い方が通気抵抗が少な
く、圧縮空気を流し易いが、膜モジュールは外側通路の
断面積を広くする方が、中空糸の本数を増やすことなく
作成できるので、水分を含有する圧縮空気や排気ガスは
外側通路5に流す方が通気抵抗が少なく、吸着筒に圧縮
空気を効率良く供給でき、圧縮空気供給手段で発生する
空気圧力をそれだけ低くできるので電動機の負荷も軽く
なり消費電力も低減出来る。
According to the present invention, in order to maintain the temperature, P
The heat generated in the oxygen concentrator by the SA method is used efficiently. This is performed by housing a humidifying unit using the membrane module in a housing that houses a compressed air supply unit including an electric motor and other heating devices that consume electric energy. In addition, this case has a soundproof structure,
It is also preferable to have an effect of preventing noise from leaking from a motor and / or an air supply unit, a fan unit, and the like, which are devices that generate noise. However, in a device that does not require soundproofing, it is not necessary to use a soundproofing housing. Further, in the outer passage 5 and the inner passage of the hollow fiber permeable membrane 4 in the membrane module (humidifying means 3), the larger cross-sectional area has less airflow resistance and allows the compressed air to flow easily. A larger cross-sectional area can be produced without increasing the number of hollow fibers. Therefore, flowing compressed air or exhaust gas containing water through the outer passage 5 has less ventilation resistance, and the compressed air is efficiently supplied to the adsorption cylinder. Since the air can be supplied well and the air pressure generated by the compressed air supply means can be reduced accordingly, the load on the motor can be reduced and the power consumption can be reduced.
【0022】このように構成することにより、水分を多
く含有する圧縮空気が外側通路を通過し、内側通路に
は、濃縮生成され水分をほとんど含有せず、減圧弁10
で圧力調整された低圧の酸素富化ガスが通過し、外側か
ら内側に向かって大気中の水分のみが透過するので、大
気中から分離して得た水分を、濃縮された酸素富化ガス
に与えて加湿することになり、従来から用いられている
気泡式の加湿器のような水分の補充や交換作業が不要と
なり、これにより不衛生の原因を無くすことが出来る。
With this configuration, the compressed air containing a large amount of water passes through the outer passage, and the inner passage contains substantially no water that is concentrated and generated.
The low-pressure oxygen-enriched gas whose pressure has been adjusted in passes through, and only the moisture in the atmosphere permeates from the outside to the inside, so the moisture obtained by separating from the atmosphere is converted into a concentrated oxygen-enriched gas. By applying and humidifying, there is no need to replenish or replace water as in a conventionally used bubble-type humidifier, thereby eliminating the cause of unsanitary conditions.
【0023】[0023]
【実施例】以下、図面により本発明の好ましい実施例に
ついて、特に、加湿手段3を中心とした構成について具
体的に説明するが、むろんこれは説明のためのものであ
って、本発明はこれらの実施例に限定されるものではな
い。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention will be described below in detail with reference to the drawings, particularly the configuration focusing on the humidifying means 3. However, this is only for explanation, and the present invention is not limited to these embodiments. However, the present invention is not limited to the embodiment.
【0024】図1に示した実施例は、圧縮空気供給手段
2によって加圧された圧縮空気の全量を、中空糸透過膜
4を用いた加湿手段3の外側通路5に流すように構成し
た例である。圧縮空気は、外側通路5を通過する間に含
有する水分が中空糸の内側通路へ透過して分離除去さ
れ、PSA法の操作を制御する弁手段11を介して、吸
着筒12又は13の入口端に供給される。そして、吸着
筒では窒素等が吸着除去されて酸素ガスを発生し、この
酸素富化ガスはバッファタンク16に貯留される。バッ
ファタンク16に貯留された酸素富化ガスは、減圧弁1
0と絞り弁9で適宜の圧力、流量になるように調整し
て、加湿手段3の中空糸透過膜4の内側通路に供給さ
れ、圧縮空気から分離除去された前記の水分が与えられ
て加湿され、取出口8から患者に供給される。
The embodiment shown in FIG. 1 is configured such that the whole amount of the compressed air pressurized by the compressed air supply means 2 flows to the outside passage 5 of the humidifying means 3 using the hollow fiber permeable membrane 4. It is. In the compressed air, the moisture contained while passing through the outer passage 5 penetrates into the inner passage of the hollow fiber and is separated and removed therefrom. Supplied to the end. Then, in the adsorption column, nitrogen or the like is adsorbed and removed to generate oxygen gas, and this oxygen-enriched gas is stored in the buffer tank 16. The oxygen-enriched gas stored in the buffer tank 16 is supplied to the pressure reducing valve 1
0 and the throttle valve 9 are adjusted to an appropriate pressure and flow rate, and supplied to the inside passage of the hollow fiber permeable membrane 4 of the humidifying means 3 to be supplied with the water separated and removed from the compressed air to humidify. Is supplied to the patient from the outlet 8.
【0025】ここで、吸入フィルター1は、空気中の塵
埃を除去して、圧縮空気供給手段2に清浄な空気を供給
するためのものである。また、減圧弁10は、バッファ
タンク16に貯留している酸素ガスを使用に供するのに
適当な圧力(例えば、約0.3kgf/cm2・G)に
調整するもので、絞り弁9は、取出口8から取り出し患
者に供給する酸素富化ガスの流量を調整するものであっ
て、ニードルバルブ式やオリフィス選択型等の、ガスの
流量を調節出来るものであればいずれのものであっても
よい。加湿の度合を調節する必要がある場合には、加湿
手段3の中空糸透過膜4の内側通路の入口側と出口側と
の間に可変できる絞り弁20を付設し、加湿されていな
い酸素富化ガスの一部をバイパスさせて、加湿された酸
素富化ガスに混合すれば良い。
Here, the suction filter 1 is for removing dust in the air and supplying clean air to the compressed air supply means 2. Further, the pressure reducing valve 10 adjusts the pressure (for example, about 0.3 kgf / cm 2 · G) suitable for using the oxygen gas stored in the buffer tank 16 for use. It adjusts the flow rate of the oxygen-enriched gas taken out from the outlet port 8 and supplied to the patient, and may be of any type such as a needle valve type or an orifice selection type as long as the gas flow rate can be adjusted. Good. If it is necessary to adjust the degree of humidification, a variable throttle valve 20 is provided between the inlet side and the outlet side of the inner passage of the hollow fiber permeable membrane 4 of the humidifying means 3 so that the unhumidified oxygen rich A part of the oxidizing gas may be bypassed and mixed with the humidified oxygen-enriched gas.
【0026】本実施例で使用した中空糸透過膜は、パー
フルオロ系イオン交換膜で構成したが、これ以外のイオ
ン交換膜であってもよい。また、図中では中空糸透過膜
4は入口側からで出口側まで1本の2重線として表わし
ているが、実際には外径0.3mm、内径0.15m
m、長さ約25cmの中空糸約3500本を1束とした
ものを使用した。
Although the hollow fiber permeable membrane used in this embodiment is constituted by a perfluoro ion exchange membrane, other ion exchange membranes may be used. Further, in the figure, the hollow fiber permeable membrane 4 is represented as a single double line from the inlet side to the outlet side, but actually, the outer diameter is 0.3 mm and the inner diameter is 0.15 m.
A bundle of about 3500 hollow fibers having a length of about 25 cm and a length of about 25 cm was used.
【0027】また、加湿手段3において、外側通路5及
び中空糸透過膜4の内側通路の、加湿手段3の外側に通
じる入口と出口は、加湿手段3のどちら側であっても良
く、構造上はその通路の方向性はないが、水分を含有す
る圧縮空気の流れと、乾燥した酸素富化ガスの流れと
は、互いに対向する方向となるように構成する方が好ま
しい。その理由は、中空糸の隔膜を水分が透過する率
は、前述のように両気体の圧力差ではなく、その気体中
の水分の分圧差に比例するため、含有する水分が除かれ
て徐々に水分の分圧が低下する圧縮空気と、加湿されて
徐々に水分の分圧が上昇する酸素富化ガスの、その流れ
る方向を互いに逆向きにすることにより、加湿手段3内
の外側、内側両通路のほぼ全域にわたって、両気体の水
分の分圧がおおむね等しくなるので、加湿効果をいっそ
う高められるためである。但し、本実施例や次に述べる
第2の実施例では、中空糸の外側通路5を流れる圧縮空
気や排気ガスの量は、酸素富化ガスの量に比較して約3
0倍と十分多いので、それ程顕著な効果は表われない。
In the humidifying means 3, the inlet and the outlet of the outer passage 5 and the inner passage of the hollow fiber permeable membrane 4 communicating with the outside of the humidifying means 3 may be located on either side of the humidifying means 3. Although there is no directionality in the passage, it is preferable that the flow of the compressed air containing water and the flow of the dried oxygen-enriched gas are in directions opposite to each other. The reason is that the rate at which moisture permeates through the membrane of the hollow fiber is not proportional to the pressure difference between the two gases as described above, but is proportional to the partial pressure difference of the moisture in that gas. By making the flowing directions of the compressed air in which the partial pressure of moisture decreases and the oxygen-enriched gas, which is humidified and the partial pressure of moisture gradually rises, opposite to each other, both the outside and the inside of the humidifying means 3 are formed. This is because the partial pressure of the moisture of both gases is substantially equal over almost the entire area of the passage, so that the humidifying effect can be further enhanced. However, in this embodiment and the second embodiment described below, the amount of the compressed air and the exhaust gas flowing through the outer passage 5 of the hollow fiber is about 3 times larger than the amount of the oxygen-enriched gas.
Since the number is sufficiently large as 0 times, a remarkable effect is not exhibited.
【0028】図2に示した実施例は、基本的には前記の
図1の実施例と同じであるが、圧縮空気供給手段2によ
って加圧された圧縮空気の一部を、加湿手段3内の中空
糸透過膜4の外側通路5に流すように構成した例であ
る。圧縮空気は、加湿手段3内の通路を通過する間に含
有する水分が中空糸透過膜の内側通路へ透過して分離除
去され、その後、絞り弁20、サイレンサー21を介し
て、前記の防音機能を有する防音筐体29内に放出され
る。加湿に使用された圧縮空気は、大気中に放出して廃
棄され無駄になるので、出来るだけ少なくした方が良
い。その流量は加湿手段3へ流す酸素富化ガスの流量と
ほぼ同じで良い。また、それ以上の流量になると、吸着
筒の方へ供給する圧縮空気の量が少なくなり、酸素濃縮
器全体としての性能が低下するので、絞り弁20でその
流量が少なく、加湿される度合いが最適となるように調
節する。さらに、この絞り弁20の直後に大気に放出す
るのでは騒音が発生するので、サイレンサー21を付設
したが、防音機能が十分な筐体であれば、サイレンサー
21は無くてもよい。
The embodiment shown in FIG. 2 is basically the same as the embodiment shown in FIG. 1 except that a part of the compressed air pressurized by the compressed air supply means 2 is supplied to the humidifying means 3. This is an example in which it is configured to flow through the outer passage 5 of the hollow fiber permeable membrane 4. When the compressed air passes through the passage in the humidifying means 3, the moisture contained therein passes through the inside passage of the hollow fiber permeable membrane and is separated and removed therefrom. Is released into the soundproof housing 29 having The compressed air used for humidification is released into the atmosphere and discarded, and is wasted. Therefore, it is better to reduce the compressed air as much as possible. The flow rate thereof may be substantially the same as the flow rate of the oxygen-enriched gas flowing to the humidifying means 3. Further, when the flow rate becomes higher, the amount of compressed air supplied to the adsorption column decreases, and the performance of the oxygen concentrator as a whole deteriorates. Therefore, the flow rate is reduced by the throttle valve 20, and the degree of humidification is reduced. Adjust for optimum. Furthermore, since a noise is generated if the air is released to the atmosphere immediately after the throttle valve 20, the silencer 21 is provided. However, the silencer 21 may be omitted if the housing has a sufficient soundproofing function.
【0029】一方、圧縮空気の大部分を占める残部は、
PSA法による吸着分離の操作を制御する弁手段11を
介して、吸着筒12又は13へ供給される。そして、こ
の吸着筒では窒素等が吸着除去されて酸素富化ガスを発
生し、この酸素富化ガスはバッファタンク16に貯留さ
れる。バッファタンク16に貯留された酸素富化ガス
は、減圧弁10と絞り弁9で適宜の圧力、流量になるよ
うに調整して、加湿手段3の中空糸透過膜4の内側通路
に供給され、圧縮空気から分離除去された前記の水分が
与えられて加湿され、取出口8から患者に供給される。
On the other hand, the remaining portion that occupies most of the compressed air is
It is supplied to the adsorption column 12 or 13 via the valve means 11 for controlling the operation of the adsorption separation by the PSA method. Then, in this adsorption column, nitrogen and the like are adsorbed and removed to generate an oxygen-enriched gas, and this oxygen-enriched gas is stored in the buffer tank 16. The oxygen-enriched gas stored in the buffer tank 16 is supplied to the inner passage of the hollow fiber permeable membrane 4 of the humidifying means 3 by adjusting the pressure and the flow rate by the pressure reducing valve 10 and the throttle valve 9 to an appropriate pressure. The water separated and removed from the compressed air is provided and humidified, and supplied to the patient from the outlet 8.
【0030】この実施例では、中空糸の外側通路と内側
通路で流れる気体の量をほぼ等しくなるようにしたの
で、それぞれの気体は加湿手段3の2つの通路のうち、
いずれの通路に流しても差し支えない。このような場合
には、前述のように各々の気体の流れる方向は対向とな
ることが好ましい。(図2では作図の都合上、同一方向
となっている)
In this embodiment, the amounts of gas flowing in the outer passage and the inner passage of the hollow fiber are made substantially equal.
It does not matter if it flows into any of the passages. In such a case, it is preferable that the flowing directions of the respective gases be opposite as described above. (In Fig. 2, it is in the same direction for the sake of drawing.)
【0031】図3に示した実施例も、基本的には前記の
図1の実施例と同じであるが、圧縮空気供給手段2から
の圧縮空気を弁手段11を介して、吸着筒12又は13
へ供給し濃縮して、酸素富化ガスを発生させ、この酸素
富化ガスはバッファタンク16に貯留される。そして、
吸着筒12又は13が減圧脱着工程に入った時、その一
部をオリフィス14を通して吸着筒へ逆流させて、吸着
された窒素等の脱着を助け、ここで脱着された排気ガス
を弁手段11を介して、加湿手段3の中空糸の外側通路
5に導入する。排気ガス中に含有する水分は中空糸の内
側通路へ透過して分離除去され、膜モジュール内を通過
して乾燥した排気ガスは、サイレンサー17を介して、
前記の防音機能を有する防音筐体29内に放出される。
これに対して、前記の酸素富化ガスを湿手段3内の中空
糸の内側通路に供給し、排気ガスから分離除去された水
分を与えて加湿するように構成したことを特徴とする。
The embodiment shown in FIG. 3 is basically the same as the embodiment shown in FIG. 1, except that the compressed air from the compressed air supply means 2 is supplied to the adsorption cylinder 12 or the valve 12 through the valve means 11. 13
The oxygen-enriched gas is supplied to and concentrated to generate an oxygen-enriched gas, and this oxygen-enriched gas is stored in the buffer tank 16. And
When the adsorption column 12 or 13 enters the vacuum desorption step, a part of the flow is returned to the adsorption column through the orifice 14 to assist desorption of the adsorbed nitrogen and the like. Through the humidifying means 3 into the outer passage 5 of the hollow fiber. Moisture contained in the exhaust gas passes through the inner passage of the hollow fiber and is separated and removed. Exhaust gas that has passed through the membrane module and dried is passed through the silencer 17,
It is released into the soundproof housing 29 having the above soundproof function.
On the other hand, the oxygen-enriched gas is supplied to the inner passage of the hollow fiber in the wetting means 3 to provide moisture separated and removed from the exhaust gas to humidify.
【0032】この場合には、吸着筒の減圧脱着工程時の
圧力を、所定の時間内に極力低く下げる必要があり、脱
着時の排気ガスが流れたときの通気抵抗を出来るだけ低
くした加湿手段が必要となるので、前記図1の実施例の
場合と同様に、中空糸の内側通路の方を酸素富化ガスの
通路とし、外側通路5の方を排気ガスの通路とした。ま
た、脱着時の排気ガスは、大気中より相対湿度は高い
が、大気に開放して減圧しているために圧力が低く、中
空糸透過膜4の内外で生ずる両気体の水分の分圧差が比
較的低いために、加湿効果も前記図1の実施例よりは幾
分低下するが、50〜90%(RH)あり、実用上全く
問題はない。さらに、本実施例でも加湿度の調節が必要
な場合には、加湿手段3の中空糸透過膜4の内側通路の
入口側と出口側との間に可変できる絞り弁を付設し、加
湿されていない酸素富化ガスの一部をバイパスさせて、
加湿された酸素富化ガスに混合すれば良いことは前記図
1の実施例と同じである。
In this case, it is necessary to lower the pressure during the decompression / desorption step of the adsorption cylinder as low as possible within a predetermined time, and a humidifying means for reducing the ventilation resistance when exhaust gas flows during desorption as much as possible. Therefore, as in the case of the embodiment shown in FIG. 1, the inner passage of the hollow fiber is used as the passage of the oxygen-enriched gas, and the outer passage 5 is used as the passage of the exhaust gas. Although the exhaust gas at the time of desorption has a higher relative humidity than the atmosphere, the pressure is low because the gas is released to the atmosphere and the pressure is reduced, and the partial pressure difference between the moisture of both gases generated inside and outside the hollow fiber permeable membrane 4 is reduced. Since it is relatively low, the humidification effect is somewhat lower than that of the embodiment of FIG. 1, but it is 50 to 90% (RH), and there is no practical problem. Furthermore, in this embodiment, when the humidification needs to be adjusted, a variable throttle valve is provided between the inlet side and the outlet side of the inner passage of the hollow fiber permeable membrane 4 of the humidifying means 3 so that the humidification is performed. To bypass some of the oxygen-enriched gas
It is the same as in the embodiment of FIG. 1 that the gas may be mixed with the humidified oxygen-enriched gas.
【0033】尚、図1〜図3に示す実施例における筐体
内への実装は、図4,図5に示す方法と類似の方法によ
り行い、内部発熱機器類による温度上昇を熱源とする筐
体内に膜モジュールによる加湿手段を収容し、一次側の
水分分圧を高く維持できるようにする。またこれは騒音
源からの騒音を防止する防止筐体をも兼ねるものでもあ
る。
The mounting in the housing in the embodiment shown in FIGS. 1 to 3 is performed by a method similar to the method shown in FIGS. The humidifying means by the membrane module is housed in the tub so that the water partial pressure on the primary side can be kept high. It also serves as a protection housing for preventing noise from the noise source.
【0034】[0034]
【発明の効果】本発明の酸素濃縮器を使用することによ
り、従来から用いられている気泡式加湿器の、水の補充
や交換、容器の清掃等の煩わしい作業から解放され、ま
た、加湿器の蓋が不完全なために酸素ガスが漏れると言
う事態も防止できる他、気泡のはじける音の心配や対策
も不要になる。さらに、装置の騒音源となる電動機、圧
縮空気供給手段、ファン手段等は勿論のこと、加湿手段
も防音効果のある筐体内に収容し、しかも、冷却用の通
風通路に独特の工夫を施しているので動作音が非常に静
かであり、医療用の酸素濃縮器として好適である。
By using the oxygen concentrator of the present invention, the troublesome operation of the conventionally used bubble humidifier such as replenishment and replacement of water, cleaning of the container, etc. can be relieved. In addition to preventing the oxygen gas from leaking due to the imperfect lid, there is no need to worry about the sound of bubbles popping out or take measures. Furthermore, the humidifying means as well as the electric motor, compressed air supply means, fan means, etc., which are the noise sources of the apparatus, are housed in a housing having a soundproof effect, and the cooling ventilation passage is made unique. Therefore, the operation sound is very quiet, which is suitable as a medical oxygen concentrator.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明の好適な実施例である酸素濃縮器のフロ
ーシートを示す図である。
FIG. 1 is a diagram showing a flow sheet of an oxygen concentrator according to a preferred embodiment of the present invention.
【図2】本発明の他の実施例である酸素濃縮器のフロー
シートを示す図である。
FIG. 2 is a view showing a flow sheet of an oxygen concentrator according to another embodiment of the present invention.
【図3】本発明の他の実施例である酸素濃縮器のフロー
シートを示す図である。
FIG. 3 is a view showing a flow sheet of an oxygen concentrator according to another embodiment of the present invention.
【図4】酸素濃縮器の外部筐体内部の構成の一例を模式
的に示した、右半部の縦断面図である。
FIG. 4 is a vertical sectional view of a right half part schematically showing an example of a configuration inside an outer casing of the oxygen concentrator.
【図5】防音機能を有する筐体内部の構成を説明するた
めの図である。
FIG. 5 is a diagram illustrating a configuration inside a housing having a soundproofing function.
【符号の説明】[Explanation of symbols]
1 吸入フィルター 2 圧縮空気供給手段 3 加湿手段 4 中空糸透過膜 5 外側通路 8 取出口 9,20 絞り弁 10 減圧弁 11 弁手段 12,13 吸着筒 14 オリフィス 16 バッファタンク 17,21 サイレンサー 23 外部筐体 24 大気取入口 25 空気送気口 26 空気吸入口 27 空気流出口 28 空気排出口 29,30 防音筐体 31 ファン手段 32 連通開口部 33 遮音板 34 大気流入通路 35 大気排出通路 36 消音用ダクト REFERENCE SIGNS LIST 1 suction filter 2 compressed air supply means 3 humidification means 4 hollow fiber permeable membrane 5 outer passage 8 outlet 9, 20 throttle valve 10 pressure reducing valve 11 valve means 12, 13 suction cylinder 14 orifice 16 buffer tank 17, 21 silencer 23 outer casing Body 24 Atmospheric intake 25 Air air inlet 26 Air inlet 27 Air outlet 28 Air outlet 29, 30 Soundproof housing 31 Fan means 32 Communication opening 33 Sound insulation plate 34 Air inflow passage 35 Air exhaust passage 36 Sound reduction duct
フロントページの続き (56)参考文献 特開 平5−49697(JP,A) (58)調査した分野(Int.Cl.7,DB名) A61M 16/10 B01D 53/04 B01D 53/22 C01B 13/02 (56) References JP-A-5-49697 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) A61M 16/10 B01D 53/04 B01D 53/22 C01B 13 / 02

Claims (7)

    (57)【特許請求の範囲】(57) [Claims]
  1. 【請求項1】 吸着剤を充填した少なくとも1個の吸着
    筒、該吸着筒に圧縮空気を供給するための電動機の動力
    で駆動される圧縮空気供給手段、該電動機及び/又は圧
    縮空気供給手段を冷却するためのファン手段とで基本的
    に構成された圧力変動吸着法(PSA法)による酸素濃
    縮器において、水分透過可能な中空糸透過膜を隔膜とす
    る膜モジュールを加湿手段として付設し、前記圧縮空気
    供給手段からの圧縮空気、もしくは吸着筒の減圧脱着工
    程時に脱着し排出される排気ガスを膜モジュールの隔膜
    の一方の側に供給して、該圧縮空気もしくは排気ガス中
    に含有する水分を中空糸透過膜により分離除去し、中空
    糸透過膜により分離された水分を、前記吸着筒にて濃縮
    され該膜モジュールの他方の側に供給された酸素富化ガ
    スに与えて加湿するように構成すると共に、該膜モジュ
    ールによる加湿手段は、前記の電動機及び/又は圧縮空
    気供給手段、ファン手段等の動作時には騒音を発生する
    機器類と共に、防音機能を有する筐体内に収容したこと
    を特徴とする医療用の酸素濃縮器。
    At least one adsorption cylinder filled with an adsorbent, compressed air supply means driven by the power of an electric motor for supplying compressed air to the adsorption cylinder, the electric motor and / or compressed air supply means In an oxygen concentrator based on a pressure fluctuation adsorption method (PSA method) basically comprising a fan means for cooling, a membrane module having a hollow fiber permeable membrane capable of transmitting moisture as a diaphragm is provided as a humidifying means, The compressed air from the compressed air supply means or the exhaust gas desorbed and discharged during the decompression and desorption step of the adsorption cylinder is supplied to one side of the membrane of the membrane module to remove moisture contained in the compressed air or the exhaust gas. The water separated by the hollow fiber permeable membrane is separated and removed, and the water separated by the hollow fiber permeable membrane is concentrated in the adsorption column and supplied to the oxygen-enriched gas supplied to the other side of the membrane module to be humidified. In addition, the humidifying means by the membrane module is housed in a housing having a soundproofing function together with the above-mentioned electric motor and / or compressed air supply means, equipment that generates noise during operation, etc. Characteristic medical oxygen concentrator.
  2. 【請求項2】 吸着剤を充填した少なくとも1個の吸着
    筒、該吸着筒に圧縮空気を供給するための電動機の動力
    で駆動される圧縮空気供給手段、該電動機及び/又は圧
    縮空気供給手段を冷却するためのファン手段とで基本的
    に構成された圧力変動吸着法(PSA法)による酸素濃
    縮器において、水分透過可能な中空糸透過膜を隔膜とす
    る膜モジュールを加湿手段として付設し、前記圧縮空気
    供給手段からの圧縮空気、もしくは吸着筒の減圧脱着工
    程時に脱着し排出される排気ガスを膜モジュールの隔膜
    の一方の側に供給して、該圧縮空気もしくは排気ガス中
    に含有する水分を中空糸透過膜により分離除去し、中空
    糸透過膜により分離された水分を、前記吸着筒にて濃縮
    され該膜モジュールの他方の側に供給された酸素富化ガ
    スに与えて加湿するように構成すると共に、前記の圧縮
    空気供給手段、膜モジュールによる加湿手段、及び圧縮
    空気供給手段から加湿手段までの圧縮空気の通過する通
    路を、外気温度より一定値以上高い温度に保つように構
    成したことを特徴とする医療用の酸素濃縮器。
    2. At least one adsorption cylinder filled with an adsorbent, compressed air supply means driven by the power of an electric motor for supplying compressed air to the adsorption cylinder, the electric motor and / or compressed air supply means In an oxygen concentrator based on a pressure fluctuation adsorption method (PSA method) basically comprising a fan means for cooling, a membrane module having a hollow fiber permeable membrane capable of transmitting moisture as a diaphragm is provided as a humidifying means, The compressed air from the compressed air supply means or the exhaust gas desorbed and discharged during the decompression and desorption step of the adsorption cylinder is supplied to one side of the membrane of the membrane module to remove moisture contained in the compressed air or the exhaust gas. The water separated by the hollow fiber permeable membrane is separated and removed, and the water separated by the hollow fiber permeable membrane is concentrated in the adsorption column and supplied to the oxygen-enriched gas supplied to the other side of the membrane module to be humidified. And the passage through which the compressed air is supplied from the compressed air supply unit, the humidification unit using the membrane module, and the compressed air from the compressed air supply unit to the humidification unit is maintained at a temperature higher than the outside air temperature by a certain value or more. A medical oxygen concentrator characterized by the following.
  3. 【請求項3】 圧縮空気供給手段、膜モジュールによる
    加湿手段、及び圧縮空気供給手段から加湿手段までの圧
    縮空気の通過する通路を、前記の電動機及び/又は圧縮
    空気供給手段等の動作時に熱を発生する機器類を収納し
    て、外気より温度が高められる筐体内に収容したことを
    特徴とする、請求項2記載の医療用酸素濃縮器。
    3. A compressed air supply means, a humidifying means by a membrane module, and a passage through which compressed air passes from the compressed air supply means to the humidifying means is provided with heat when the electric motor and / or the compressed air supply means is operated. The medical oxygen concentrator according to claim 2, wherein the generated devices are housed in a housing whose temperature is higher than that of the outside air.
  4. 【請求項4】 電動機及び/又は圧縮空気供給手段等の
    動作時に熱を発生する機器類を収納した筐体が、防音機
    能を有するものであることを特徴とする、請求項3記載
    の医療用酸素濃縮器。
    4. The medical device according to claim 3, wherein the housing housing the devices that generate heat during operation of the electric motor and / or the compressed air supply means has a soundproofing function. Oxygen concentrator.
  5. 【請求項5】 圧縮空気供給手段からの圧縮空気を、加
    湿手段となる膜モジュール内の中空糸の外側通路に供給
    して、該圧縮空気中に含有する水分を中空糸の内側通路
    へ透過させて分離除去し、膜モジュール内を通過した圧
    縮空気は前記吸着筒へ供給し濃縮して、酸素富化ガスを
    発生させ、続いて該酸素富化ガスを膜モジュール内の中
    空糸の内側通路に供給し、圧縮空気から分離除去された
    水分を与えて加湿するように構成したことを特徴とす
    る、請求項1乃至請求項4のいずれかに記載の医療用の
    酸素濃縮器。
    5. The compressed air from the compressed air supply means is supplied to an outer passage of a hollow fiber in a membrane module serving as a humidifier, and moisture contained in the compressed air is transmitted to an inner passage of the hollow fiber. The compressed air passed through the membrane module is supplied to the adsorption column and concentrated to generate an oxygen-enriched gas, and then the oxygen-enriched gas is supplied to the inside passage of the hollow fiber in the membrane module. The medical oxygen concentrator according to any one of claims 1 to 4, wherein the oxygen is supplied and humidified by supplying moisture separated and removed from the compressed air.
  6. 【請求項6】 圧縮空気供給手段からの圧縮空気の一部
    を、加湿手段となる膜モジュール内の中空糸の外側もし
    くは内側の通路に供給して、該圧縮空気中に含有する水
    分を中空糸の他方側通路へ透過させて分離除去し、膜モ
    ジュール内を通過した圧縮空気は、絞り弁を介して前記
    防音機能を有する筐体内に放出させ、一方、圧縮空気の
    残部は前記吸着筒へ供給し濃縮して、酸素富化ガスを発
    生させ、続いて該酸素富化ガスを膜モジュール内の中空
    糸の前記他方側通路に供給し、圧縮空気から分離除去さ
    れた水分を与えて加湿するように構成したことを特徴と
    する、請求項1乃至請求項4のいずれかに記載の医療用
    の酸素濃縮器。
    6. A part of the compressed air from the compressed air supply means is supplied to the outside or inside passage of the hollow fiber in the membrane module serving as the humidifying means, and the moisture contained in the compressed air is supplied to the hollow fiber. The compressed air passing through the membrane module is separated and removed, and the compressed air that has passed through the membrane module is released through the throttle valve into the housing having the soundproofing function, while the remaining compressed air is supplied to the adsorption column. Then, the oxygen-enriched gas is generated, and then the oxygen-enriched gas is supplied to the other side passage of the hollow fiber in the membrane module, and humidified by giving moisture separated and removed from the compressed air. The medical oxygen concentrator according to any one of claims 1 to 4, characterized in that:
  7. 【請求項7】 圧縮空気供給手段からの圧縮空気を吸着
    筒へ供給し濃縮して、酸素富化ガスを発生させ、該吸着
    筒の減圧脱着工程時に脱着し排出される排気ガスを、加
    湿手段となる膜モジュール内の中空糸の外側通路に供給
    して、該排気ガス中に含有する水分を中空糸の内側通路
    へ透過させて分離除去し、膜モジュール内を通過した排
    気ガスは、絞り弁を介して前記防音機能を有する筐体内
    に放出させ、一方、前記の酸素富化ガスを膜モジュール
    内の中空糸の内側通路に供給し、排気ガスから分離除去
    された水分を与えて加湿するように構成したことを特徴
    とする、請求項1乃至請求項4のいずれかに記載の医療
    用酸素濃縮器。
    7. An oxygen-enriched gas is generated by supplying compressed air from a compressed air supply means to an adsorption column to generate an oxygen-enriched gas, and exhaust gas desorbed and discharged in a decompression / desorption step of the adsorption column is humidified by The water contained in the exhaust gas is supplied to the outer passage of the hollow fiber in the membrane module to be transmitted to the inner passage of the hollow fiber to be separated and removed, and the exhaust gas passing through the membrane module is subjected to a throttle valve. Through the inside of the housing having the soundproofing function, while supplying the oxygen-enriched gas to the inside passage of the hollow fiber in the membrane module, and humidifying by giving moisture separated and removed from the exhaust gas. The medical oxygen concentrator according to any one of claims 1 to 4, wherein the medical oxygen concentrator is configured as follows.
JP14481695A 1994-09-21 1995-06-12 Medical oxygen concentrator Expired - Fee Related JP3178302B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP22632594 1994-09-21
JP6-226325 1994-09-21
JP14481695A JP3178302B2 (en) 1994-09-21 1995-06-12 Medical oxygen concentrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14481695A JP3178302B2 (en) 1994-09-21 1995-06-12 Medical oxygen concentrator

Publications (2)

Publication Number Publication Date
JPH08141087A JPH08141087A (en) 1996-06-04
JP3178302B2 true JP3178302B2 (en) 2001-06-18

Family

ID=26476110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14481695A Expired - Fee Related JP3178302B2 (en) 1994-09-21 1995-06-12 Medical oxygen concentrator

Country Status (1)

Country Link
JP (1) JP3178302B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102491277A (en) * 2011-12-22 2012-06-13 合肥恒诚智能技术有限公司 Intelligent low-oxygen generating device system and control method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005056092A1 (en) * 2003-12-15 2005-06-23 Teijin Pharma Limited Humidifying device and oxygen concentrating system
JP4647988B2 (en) * 2004-12-13 2011-03-09 フクダ電子株式会社 Gas humidifier and oxygen concentrator using the same
KR100973184B1 (en) * 2008-05-07 2010-07-30 이현철 An Oxygen Purification Apparatus
JP5413880B2 (en) * 2008-11-21 2014-02-12 フクダ電子株式会社 Oxygen concentrator
JP6555771B2 (en) * 2013-01-18 2019-08-07 フクダ電子株式会社 Air supply device and oxygen concentrator
WO2014160104A1 (en) * 2013-03-14 2014-10-02 Rollins Iii William S Method and apparatus for generating oxygen and diluent

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102491277A (en) * 2011-12-22 2012-06-13 合肥恒诚智能技术有限公司 Intelligent low-oxygen generating device system and control method
CN102491277B (en) * 2011-12-22 2013-05-15 合肥恒诚智能技术有限公司 Intelligent low-oxygen generating device system and control method

Also Published As

Publication number Publication date
JPH08141087A (en) 1996-06-04

Similar Documents

Publication Publication Date Title
JP2020189120A (en) Oxygen concentrator systems and methods
US4773410A (en) Method and apparatus for the treatment of the respiratory track with vapor-phase water
EP0633794B1 (en) Filtering device for connection to the respiratory tract of a person and the use thereof
KR200337953Y1 (en) Oxygen enrichment apparatus
CA1131524A (en) Nested hollow fiber humidifier
KR100833671B1 (en) A method for improving the air quality in the limited space and the equipment using thereof
US4620537A (en) Cold weather face mask
US20110126831A1 (en) Portable essence vaporizer
CA1319678C (en) Portable heat exchanger for inhalation rewarming
ES2666769T3 (en) System and method for efficient air dehumidification and liquid recovery with evaporation cooling
JPWO2008136540A1 (en) Oxygen concentrator
US5738808A (en) Humidifier for inhalant gas
US4318398A (en) Humidity exchanger for a breathing apparatus
EP3160559B1 (en) A micro-humidifier
EP1042034B1 (en) Heat and moisture exchanger and generator
US5558088A (en) Single patient use disposable carbon dioxide absorber which is patient tidal volume dependent and self-regulating
CN102695540B (en) Oxygen concentrator
CA2542525C (en) Oxygen humidifier
JP2011525833A (en) Respirator humidifier
CN1623612A (en) Breathing assistance apparatus
US20060032241A1 (en) Method and apparatus for air conditioning
US5158584A (en) Oxygen enriching module and oxygen enriching apparatus using same
SE9404182D0 (en) Device for moisture-heat exchanger
JPH07163664A (en) Heat/moisture exchanger
US20080173175A1 (en) Oxygen humidifier

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080413

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090413

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090413

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100413

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100413

Year of fee payment: 9

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313532

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100413

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100413

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110413

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120413

Year of fee payment: 11

LAPS Cancellation because of no payment of annual fees