JPS5987019A - Oxygen enriching apparatus - Google Patents

Abstract

PURPOSE:To purify exhaust air while actuating an oxygen enriched air supply function and to purify air in a room even if the oxygen enriched air supply function is not in action, by providing a dust-proof part, a noxious gas adsorbing part and a deodorizing part. CONSTITUTION:A dust-proof part consisting of a pre-filter 25 for removing coarse dust and a main filter 26 for removing fine particles is provided to a suction port 5. Succeeding to the main filter 26, a noxious gas adsorbing part comprising a gas adsorbing filter 27 for removing noxious gas such as sulfur dioxide or nitrogen oxide is provided and a deodorizing part comprising an activated carbon filter 28 is provided before reaching an exhaust port 7. A blower 9 is constituted so as to be started in cooperated relation to a vacuum pump 16 and atmospheric air supplied into the apparatus is passed through the prefilter 25, the main filter 26 and the gas adsorbing filter 27 to remove fine particles or noxious gas therein prior to reaching a selective gas permeable membrane 11.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application: The invention relates to medical oxygen, which obtains air with an improved oxygen concentration from atmospheric air by using a selective gas permeable membrane that allows oxygen to pass through at a rate greater than that of nitrogen. This relates to an enrichment device.

Conventional Structure and Problems Conventionally, oxygen has often been administered to treat respiratory diseases such as asthma and chronic bronchitis.

As an oxygen supply source, there are methods to supply pure oxygen produced by cryogenic separation in cylinders, methods to increase the oxygen concentration in the atmosphere using adsorbents such as zeolite, and selective gas using ultra-thin membranes. Currently, methods are being considered to enrich atmospheric air with oxygen using a permeable membrane.

An example thereof will be explained based on FIGS. 1 and 2.

In the figure, 1 is the main body of an oxygen enrichment device in which an intake chamber 2 and an exhaust chamber 3 are partitioned by a partition plate 4.

Reference numeral 5 indicates an air intake port provided in the main body 1 so as to communicate with the intake chamber 2, 6 indicates a filter provided in the intake port 5, 7 indicates an exhaust port that communicates with the exhaust chamber 3, and 8 indicates a membrane module. Reference numeral 9 denotes a blower that passes between the air intake port 5 and the membrane module 8 to form a similar air flow at the exhaust lower.

As shown in FIG. 2, the membrane module 8 has a selective gas permeable membrane 11 formed on the surface of a porous membrane support io with which the respective pores communicate, and is reinforced with a reinforcing plate 12. A net material 13 is present between the membrane support 10 and the reinforcing plate 12 in order to facilitate the flow rate of the membrane-permeating air, and a nozzle 14 is set to collect the permeating air. The nozzle 14 and the collecting pipe 15 are connected. Reference numeral 16 denotes a vacuum pump connected to the collector pipe 15, and is located at a position where it is air-cooled by the blower 9. 17 is a cooling pipe in which the gas heated by the vacuum pump 16 is cooled.

The condensed water produced by cooling is separated by a water separator 18 and guided to a moisture absorbing material 19 (20 is a relief valve, 21 is a flow meter, 22 is activated carbon, 23 is a bacterial filter, 24 is an oxygen enriched air outlet) It is the exit.

In the above configuration, when the blower 9 and the vacuum pump 16 are operated, the blower 9 sucks atmospheric air from the suction port 6 of the main body 1 through the filter 6, and the sucked atmosphere flows between the membrane modules 8.

At this time, the pressure inside the membrane module 8 is reduced by the vacuum pump 16, so that part of the atmospheric air passing between the membrane modules 9 passes through the selective gas permeable membrane 11 and becomes oxygen-enriched air.

Oxygen-enriched air is supplied to the porous membrane support 1 within the membrane module 8.
o, net material 13. It is directed through nozzle 14 to aggregate %i 15.

The oxygen-enriched air heated by passing through the vacuum pump 16 is cooled in the cooling pipe 17, and moisture is condensed.

The oxygen-enriched air from which the condensed water has been separated is purified by a relief valve 20 for flow rate adjustment, a flow meter 21, activated carbon 22 for deodorizing the reservoir, and a bacteria filter 23, and then sent to an e-enriched air outlet 24. It will be done.

On the other hand, atmospheric air that has not passed through the selective gas permeable membrane 11 is sent to the exhaust chamber 3 by the blower 9. The vacuum pump 16 is then discharged from the exhaust lower while being cooled.

At this time, the condensed water absorbed by the moisture absorbing material 19 evaporates from the air discharged from the device.

In the device having the above configuration, the selective permeable membrane 11 may pass through the selectively permeable membrane 11 even sulfur dioxide gas and nitrogen oxides that are harmful to the human body, and if the filter 6 alone is used for a long time, fine particles may be deposited on the membrane surface. It has the disadvantage that the amount of oxygen-enriched air that permeates is reduced.

Furthermore, since the air that has not passed through the selective gas permeable membrane 11 is discharged into the room where the patient is, there is a drawback that fine particles and odors must be removed.

OBJECTS OF THE INVENTION It is an object of the present invention to eliminate the above-mentioned conventional drawbacks, and to provide an apparatus that has an oxygen-enriched air supply function and an air cleaning function, and can also be used solely for the air cleaning function.

Structure of the Invention The present invention has a dust-proofing part that removes fine particles such as cigarette smoke from relatively large dust at the intake port of an oxygen enrichment device, and a harmful gas adsorption part that removes sulfur dioxide gas that is harmful to the human body. and a deodorizing section that removes odors before reaching the discharge port.

From the above structure, the device has the function of supplying oxygen-enriched air, purifies the exhaust air, and purifies the indoor air without activating the function of supplying oxygen-enriched air. This is what I did.

Description of examples An example of the present invention will be explained based on FIG.

It should be noted that the same members as those used in the forward and backward directions will be described using the same numbers.

1 filter to remove large dust etc. from the intake port 5 25. And the main filter 26 that removes particulates
Provide a dustproof section. Next to the main filter 26, a harmful gas adsorption part of a gas adsorption filter 27 for removing harmful gases such as sulfur dioxide gas and nitrogen oxides is provided, and before reaching the exhaust lower, a deodorizing part of an activated carbon filter 28 is provided.

In the above configuration, the blower 9 and the vacuum pump 16 are configured to start in conjunction with each other, and the atmospheric air supplied into the device is filtered through the prefilter 25, the main filter 26. By passing through the gas adsorption filter 27, particulates and harmful gases are removed before the selective gas permeable membrane 11.

A portion of the air that has passed through each of the above filters is pumped to the vacuum pump 1.
6, the air passes through the selective gas permeable membrane 11 and is discharged from the discharge port 24 as oxygen-enriched air.

On the other hand, the air that has not permeated is passed between the membrane modules 8 by the blower 9, purified by the activated carbon filter 28 of the deodorizing section, and discharged.

Next, when oxygen-enriched air is required and only the air in the room is desired to be purified, only the vacuum pump 1e can be independently stopped, and only the blower 9 is operated.

The entire amount of atmospheric air supplied into the apparatus by the blower 9 passes through a dustproof section, a harmful gas adsorption section, and a deodorization section, and is discharged from the discharge lower.

In the above embodiment, the main filter 26 was used to remove particulates, but in addition to this set of filters, an electrode plate type or one type of electrostatic filter may be used, as long as it can remove particulates.

Effects of the Invention As described above, according to the present invention, a dust prevention section for removing fine particles and a harmful gas adsorption section for removing sulfur dioxide gas, etc., which are harmful to the human body, are provided at the intake port of the oxygen enrichment device, and the oxygen enrichment device is provided with a dust prevention section that removes fine particles and a harmful gas adsorption section that removes sulfur dioxide gas that is harmful to the human body. Since there is a deodorizing section in between that removes odors, it is possible to supply clean oxygen to the patient from which harmful sulfur dioxide gas and nitrogen oxides have been removed, and it is also able to pass through the permeable membrane of the oxygen enrichment device. It is effective in that it can also purify the air discharged into the room where the patient is.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional oxygen enrichment device, FIG. 2 is a sectional view of a membrane module, and FIG. 3 is a sectional view of an oxygen enrichment device in an embodiment of the present invention. 1... Oxygen enrichment device main body, 5... Intake port, 7... Exhaust port, 8... Membrane module, 9... Blower, 11... Selective gas permeable membrane, 16... Jl pump; 24...
Oxygen-enriched air discharge port, 2815... Buri filter of dustproof section, 26... Main filter of dustproof section, 27... Gas adsorption filter of harmful gas adsorption section, 28 ...Activated carbon filter in the deodorizing section.

Claims (3)

[Claims] (1) A flow path through which the atmospheric air supplied to the device that improves the oxygen concentration of atmospheric air using a selective gas permeable membrane passes through a dustproof section, a harmful gas adsorption section, and a deodorizing section, and a dustproof section. After passing through the harmful gas adsorption section, a portion of the air passes through a selective gas permeable membrane to become oxygen-enriched air, and the flow passes through the dust prevention section, harmful gas adsorption section, and deodorization section. An oxygen enrichment device with a blower in the channel and a pump in the oxygen enriched air flow channel. (2) The oxygen enrichment device according to claim 1, which is configured so that the operation of the blower and the pump can be controlled independently. (3) The oxygen enrichment device according to claim 1, wherein the operation of the blower is automatically linked with the operation of the pump.