JP2006212245A - Oxygen enrichment apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oxygen enrichment apparatus freely changing the flow rate and the concentration of oxygen enriched air to be discharged. <P>SOLUTION: This oxygen enrichment apparatus is provided with a body incorporating an oxygen enrichment membrane unit for generating oxygen enriched air, a plurality of pump parts (suction means) 5a and 5b sucking the air through the oxygen enrichment membrane unit, an outlet disposed in the downstream side of the pump parts 5a and 5b and discharging the oxygen enriched air, and channel switching means 13a-13d switching the channels communicating the oxygen enrichment membrane unit, the pump parts 5a and 5b and the outlet; and is constituted to switch the using number of the pump parts 5a and 5b by the channel switching means 13a-13d. This constitution can change characteristics of the pump parts 5a and 5b acting on the oxygen enrichment membrane unit and change a balancing point based on the characteristics of the oxygen enrichment membrane unit and the characteristics of the pump parts 5a and 5b connected thereto so as to change the flow rate and the concentration of the oxygen enriched air to be discharged from the outlet. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an oxygen enricher that provides users with high oxygen concentration air, so-called oxygen-enriched air.

A conventional oxygen enricher of this type is basically composed of a device main body that generates oxygen-enriched air by concentrating oxygen in the air, and an oxygen discharge port that is connected to this and discharges oxygen-enriched air. For example, it has been developed in various ways, for example, by including negative ion generation means (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 10-234836

  However, in the configuration of the conventional oxygen enricher, the flow rate and concentration of oxygen-enriched air discharged from the main body are constant, and it is difficult to change them. In particular, the flow rate and concentration that the user is satisfied with are often sensuous, so the variation is very large. Therefore, it is ideal that the flow rate and concentration can be freely changed by the selection of each user with one oxygen enricher, but in particular, oxygen enriched air is obtained using an oxygen enriched membrane. In an oxygen enricher, the flow rate and concentration of the oxygen-enriched air inevitably discharged from the main body are determined because it is determined at a single point that balances the characteristics of the oxygen-enriched film and the characteristics of the vacuum pump connected to it. There was a problem of being done.

  An object of the present invention is to solve the above-described conventional problems, and to provide an easy-to-use oxygen enricher capable of freely changing the flow rate and concentration of oxygen-enriched air discharged by a user. To do.

  In order to solve the above-described conventional problems, an oxygen enricher of the present invention includes a main body incorporating oxygen enrichment means for generating oxygen enriched air, and a plurality of suction means for sucking air through the oxygen enrichment means. A discharge port for discharging oxygen-enriched air generated by the oxygen enrichment unit disposed downstream of the plurality of suction units, and a flow communicating the oxygen enrichment unit, the suction unit, and the discharge port A flow path switching means for switching the path, and the flow path switching means is configured so that the number of the suction means to be used can be switched, and the number of the suction means used is changed by using one oxygen-enriching means. By simply changing the characteristics of the suction means, changing the balance point between the characteristics of the oxygen enrichment means and the characteristics of the suction means connected thereto, the flow rate and concentration of the oxygen-enriched air discharged from the discharge port are changed. Be able to .

  The oxygen enricher of the present invention includes a main body incorporating oxygen enrichment means for generating oxygen enriched air, a plurality of suction means for sucking air through the oxygen enrichment means, and a plurality of suction means. A discharge port that is arranged downstream and discharges oxygen-enriched air generated by the oxygen-enriching unit; and a channel switching unit that switches a channel that connects the oxygen-enriching unit, the suction unit, and the discharge port. With the flow path switching means, the structure of the suction means can be switched in series connection and parallel connection freely, the characteristics of the suction means change only by changing the connection method of the plurality of suction means, The flow rate and concentration of the oxygen-enriched air discharged from the discharge port can be changed by changing the balance point between the characteristics of the oxygen-enriching means and the characteristics of the suction means connected thereto.

  Further, the oxygen enricher of the present invention includes a main body having a plurality of oxygen enrichment means for generating oxygen enriched air, a suction means for sucking air through the oxygen enrichment means, and a downstream side of the suction means. A discharge port for discharging the oxygen-enriched air generated by the oxygen-enriching means and a path for connecting the plurality of oxygen-enriching means and allowing the oxygen-enriched air to pass therethrough. A connection switching means capable of switching the number of oxygen-enriching means is provided, and the flow rate and concentration of oxygen-enriched air can be changed only by changing the number of oxygen-enriching means used by using one suction means. Can do. When combined with the first and second inventions, the flow rate and concentration of oxygen-enriched air can be changed in a wider range.

  The oxygen enricher of the present invention can freely change the flow rate and concentration of discharged oxygen-enriched air according to the user's preference.

  According to a first aspect of the present invention, there is provided a main body incorporating oxygen enriching means for generating oxygen enriched air, a plurality of suction means for sucking air through the oxygen enriched means, and a downstream side of the plurality of suction means. A discharge port for discharging the oxygen-enriched air generated by the oxygen-enriching means; and a flow path switching means for switching the flow path connecting the oxygen-enriching means, the suction means and the discharge port, and The number of the suction means to be used can be switched by the path switching means. By simply changing the number of suction means to be used with one oxygen enrichment means, the characteristics of the suction means can be changed, and the oxygen enrichment means can be changed. The flow rate and concentration of the oxygen-enriched air discharged from the discharge port can be changed by changing the balance point between the characteristics of the gasifying means and the characteristics of the suction means connected thereto.

  According to a second aspect of the present invention, a main body having an oxygen enriching means for generating oxygen-enriched air, a plurality of suction means for sucking air through the oxygen enriching means, and a downstream side of the plurality of suction means. A discharge port for discharging the oxygen-enriched air generated by the oxygen-enriching means; and a flow path switching means for switching the flow path connecting the oxygen-enriching means, the suction means and the discharge port, and By the path switching means, the structure of the suction means can be switched so that it can be connected in series or in parallel. The characteristics of the suction means can be changed simply by changing the connection method of the plurality of suction means. The flow rate and concentration of oxygen-enriched air discharged from the discharge port can be changed by changing the balance point between the characteristics and the characteristics of the suction means connected thereto.

  According to a third aspect of the present invention, there is provided a main body including a plurality of oxygen-enriching means for generating oxygen-enriched air, a suction means for sucking air through the oxygen-enriching means, and a downstream side of the suction means. A discharge port for discharging the oxygen-enriched air generated by the oxygenation means; and a path for connecting the plurality of oxygen enrichment means and allowing the oxygen-enriched air to pass therethrough, and the oxygen enrichment means used in the path It is possible to change the flow rate and concentration of oxygen-enriched air simply by changing the number of oxygen-enriching means used with one suction means. . When combined with the first and second inventions, the flow rate and concentration of oxygen-enriched air can be changed in a wider range.

  According to a fourth aspect of the present invention, the oxygen enricher according to any one of the first to third aspects is provided with a temperature detection unit that detects an ambient temperature, and the discharge port is arranged in accordance with the temperature detected by the temperature detection unit. By changing the flow rate or concentration of the oxygen-enriched air to be discharged, it is possible to provide the user with oxygen-enriched air having stable characteristics regardless of changes in the ambient temperature.

  In the fifth invention, the suction means of any one of the first to fourth inventions is formed by a diaphragm type vacuum pump. Since the diaphragm type vacuum pump has a high exhaust speed, it is particularly enriched in oxygen. In the oxygen enrichment means using a membrane, when the load characteristic is on the atmospheric pressure side, it is possible to increase the flow rate and concentration variation of the oxygen enriched air.

  In the sixth invention, the suction means of any one of the first to fourth inventions is formed by a rocking piston type vacuum pump, and the rocking piston type vacuum pump has a large ultimate vacuum pressure. In the oxygen enrichment means using the oxygen enriched film, when the load characteristic is on the vacuum side, the flow rate and concentration change amount of the oxygen enriched air can be increased.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
Hereinafter, the oxygen enricher according to the first embodiment of the present invention will be described with reference to FIGS.

  1A to 1D are a front view, a side view, a rear view, and a cross-sectional view of an oxygen enricher in the present embodiment.

  In FIG. 1, the oxygen enricher main body 1 (hereinafter referred to as “main body 1”) has an oxygen enrichment that generates so-called oxygen-enriched air that increases the oxygen concentration of the air sucked into the main body 1. An oxygen-enriched membrane unit 2 as means is provided. By passing through the oxygen-enriched membrane unit 2, the oxygen concentration of air is increased from 21% (about 79% nitrogen) before passing to about 30% (about 70% nitrogen).

  Further, an intake means 26 is disposed inside the main body 1, and the intake means 26 sucks outside air into the main body 1 from an intake port 30 provided on the back surface of the main body 1, and the outside air is sucked into the oxygen-enriched membrane unit. 2 and discharged to the outside through an exhaust port 40 provided on the side surface of the main body 1. 5a and 5b are pump units which are suction means for sucking a part of the air sucked into the main body 1 through an oxygen-enriched membrane (not shown) of the oxygen-enriched membrane unit 2, and the pump units 5a, It is directly connected to the motor unit 12 that drives 5b.

  6 is a discharge port provided on a side surface of the main body 1 and communicated with the pumps 5a and 5b. Further, an oxygen-enriched air discharge means 7 is detachably connected to the discharge port 6, and the pump 5a, The oxygen-enriched air sent from 5b is sent to the oxygen-enriched air discharge means 7 through the discharge port 6.

  As shown in FIG. 2, the pump unit 5a includes a suction port A20a that sucks oxygen-enriched air and an exhaust port B20b that exhausts the oxygen-enriched air, and the pump unit 5b similarly uses a suction port C20c and an exhaust port. D20d is provided.

  The pump sections 5a and 5b, the oxygen-enriched membrane unit 2 and the discharge port 6 are piped as shown in FIG. 2, and the pipe sections 5a and 5b and the oxygen-enriched membrane unit are connected to the pipe path. 2 is provided with flow path switching means 13a, 13b, 13c, 13d for switching the flow path between the discharge port 6 and the discharge port 6. The flow path switching means 13a, 13b, 13c, 13d are switch operations that are switch means provided in the main body 1. The control board 10 connected to the board 14 is electrically controlled.

  The control board 10 also controls the operation of the motor unit 12 and the intake means 26 that drive the pump units 5a and 5b.

  The oxygen-enriched air discharge means 7 is detachably attached to a discharge port 6 provided at one end of the main body 1, and includes a tube 3 made of a soft body, a capsule 4 for storing water condensed in the tube 3, and a user's It is composed of a headset 8 hung on the ear or neck and a mouse 9 attached to the headset 8 and supplying oxygen-enriched air to the mouth of the user. The mouse 9 is positioned at the mouth by putting the headset 8 on the user's ear and neck.

  Next, the operation and action of the oxygen enricher based on the above configuration will be described.

  First, the air flow path is changed by opening and closing the flow path switching means 13a, 13b, 13c, and 13d arranged in the piping path of the pump sections 5a and 5b, and the pump sections 5a and 5b are independently driven, connected in parallel, and connected in series. A mechanism for changing the flow rate and concentration of oxygen-enriched air discharged from the oxygen-enriched air discharge means 7 of the main body 1 instead of driving will be described.

  First, the case where oxygen-enriched air is obtained by single drive of the pump unit 5a will be described with reference to FIG.

  As shown in FIG. 2, by controlling the channel switching means 13a, 13b, 13d and closing the channels G, I, N, the oxygen-enriched air obtained in the oxygen-enriched membrane unit 2 flows. Channel F⇒Flow path E⇒Suction port A20a⇒Pump unit 5a⇒Exhaust port B20b⇒Flow path H⇒Flow path J⇒Flow path P⇒Flow path O⇒Discharge port 6 Therefore, in this case, there is no flow of oxygen-enriched air to the pump unit 5b, and oxygen-enriched air is sucked from the oxygen-enriched membrane unit 2 with the characteristics of only the pump unit 5a.

  Next, the case where the pump units 5a and 5b are driven in parallel will be described with reference to FIG.

  As shown in FIG. 3, by controlling the flow path switching means 13b, 13c and closing the flow paths I, L, the oxygen-enriched air collected by the oxygen-enriched membrane unit 2 flows into the flow path F⇒flow In parallel with the path E⇒suction port A20a⇒pump unit 5a⇒exhaust port B20b⇒channel H⇒channel J⇒channel P⇒channel O⇒discharge port 6, channel F⇒channel G⇒flow Path M⇒Flow path K⇒Suction port C20c⇒Pump unit 5b⇒Exhaust port D20d⇒Flow path N⇒Flow path O⇒Discharge port 6 In other words, oxygen enrichment from the oxygen-enriched membrane unit 2 The converted air is divided into two by the flow path switching means 13a, passes through the pump parts 5a and 5b, rejoins at the flow path switching means 13d, and is discharged to the discharge port 6.

  Next, FIG. 4 shows how the flow rate and concentration of oxygen-enriched air change when the single connection as shown in FIG. 2 and the parallel connection as shown in FIG. 3 are changed. Give an explanation.

  As shown in the upper diagram of FIG. 4, the flow characteristics of the oxygen-enriched film that the oxygen-enriched film unit 2 has individually (hereinafter referred to as “flow characteristics of the film”) and the pump characteristics of the pump units 5 a and 5 b are as follows. The pump units 5a and 5b are driven at the crossing points on the graph. In the case of the single drive of the pump unit 5a shown in FIG. 2, the line connecting (A)-(B) is the pump characteristic, and (A) is generally referred to as the exhaust speed, and the suction port A20a of the pump unit 5a. The flow rate of the exhaust port B20b when the air is released to the atmosphere is measured. Further, (b) is generally referred to as ultimate vacuum pressure, and is a measurement of the maximum vacuum pressure of the suction port A20a when the suction port A20a of the pump unit 5a is completely sealed. Since the pump is driven at a point (c) where the single-drive pump characteristics (b)-(b) and the flow rate characteristic of the membrane cross, the flow rate at this time can be about 3 L / min so that it can be read from the vertical scale of the graph. be able to.

  The concentration can be read from the concentration characteristic of the oxygen-enriched film shown in the lower diagram of FIG. 2 (hereinafter referred to as “film concentration characteristic”), and is driven by the above-described cross-point (c) vacuum pressure. The point is the oxygen concentration in the case of single drive, and an oxygen concentration of about 30% can be obtained as can be read from the vertical scale of the graph.

  Next, the pump characteristic in the case of the parallel connection driving shown in FIG. 3 is indicated by a line connecting (e) and (b). Since air is branched in parallel and sucked by the two pump parts 5a and 5b, the ultimate vacuum pressure (B) does not change and the exhaust speed (I) increases to (E). By connecting the pump parts 5a and 5b in parallel, the pump characteristic has changed from (A)-(B) to (E)-(B). Move to f). Accordingly, the flow rate increases from about 3 L / min to about 3.3 L / min. Also, the oxygen concentration can be increased from about 30% to about 31% because the cross point with the concentration characteristics of the film moves from (d) to (g).

  Next, the case where the pump parts 5a and 5b are connected in series and driven will be described with reference to FIG. As shown in FIG. 5, the oxygen-enriched air obtained in the oxygen-enriched membrane unit 2 is controlled by controlling the channel switching means 13a to 13d and closing each of the channels G, J, M, and P. , Channel F⇒channel E⇒suction port A20a⇒pump unit 5a⇒exhaust port B20b⇒channel H⇒channel I⇒channel L⇒channel K⇒ suction port C20c⇒pump unit 5b⇒exhaust port D20d⇒flow The path N → channel O → discharge port 6 is configured. That is, the oxygen-enriched air from the oxygen-enriched membrane unit 2 first passes through the pump unit 5a, then passes through the pump unit 5b, and is discharged to the discharge port 6.

  Next, when the single connection as shown in FIG. 2 is changed to the serial connection as shown in FIG. 5, how the flow rate and concentration of oxygen-enriched air will change will be described with reference to FIG. I do.

  As explained in the above description of the characteristics of the parallel connection drive, in the case of the single drive of the pump unit 5a shown in FIG. 2, the line connecting (A)-(B) is the pump characteristic, and the flow rate characteristic of the membrane is Since driving is performed at the crossing point (c), a flow rate of about 1.5 L / min can be obtained so as to be read from the vertical scale of the graph. Also, the oxygen concentration can be read from the concentration characteristics of the film shown in the figure below, and is driven by the above-mentioned cross point (c) vacuum pressure. Therefore, the point (d) is the concentration in the case of single driving, and the vertical axis of the graph As can be read from the scale, a concentration of about 30% can be obtained.

  Further, the pump characteristics in the case of series connection driving shown in FIG. 5 are indicated by connecting lines (A) to (E). This is because air is sucked twice by the pump parts 5a and 5b, so that the ultimate vacuum pressure (B) increases to (E) without changing the exhaust speed (A). When the pump characteristics are changed from (b)-(b) to (b)-(e) in series connection, the cross point with the flow rate characteristic of the membrane moves from (c) to (f). Accordingly, the flow rate increases from about 1.5 L / min to about 2.1 L / min. As for the oxygen concentration, the cross point with the concentration characteristic of the film moves from (d) to (g), so that the concentration can be increased from about 30% to about 31.5%.

  As can be seen from the upper diagram of FIG. 6, in the case of series connection, since the cross point can be moved to the high vacuum pressure side, the flow rate characteristic of the film can be obtained on the relatively high vacuum side, and a great effect can be obtained. it can. Conversely, in the case of parallel connection, since the cross point on the low vacuum pressure side can be moved, a great effect can be obtained with respect to the film whose flow characteristics are obtained on the relatively low vacuum side.

  In the above-described embodiment, the description has been made by connecting a plurality of pump parts 5a and 5b and one motor part 12 in both FIGS. 2, 3, and 5. However, as shown in FIG. A shaft 15 of one motor unit 12 is used as both shafts, and rods 16 built in each of the pump units 5a and 5b are connected to both shafts, and two or more pumps are provided by one motor unit 12. The portion can be driven, and the cost and size can be reduced.

  However, for example, when oxygen-enriched air is sucked only by the pump unit 5a (in the case of single drive), since both the pump units 5a and 5b are driven by one motor unit 12, the pump unit 5b is stopped. The motor unit 12 basically requires the ability to drive both the pump units 5a and 5b. Even when only one of the pump units 5a and 5b is required, the two pump units 5a and 5b are required. Always consumes a minute's power. In order to improve this, if one motor unit 12 is provided in each of the plurality of pump units 5a and 5b, the size and cost will be increased, but in the case of driving only one pump unit, the other Since the pump unit can be stopped and the power consumption can be reduced accordingly, an energy saving effect can be obtained.

  As described above, according to the present embodiment, it is possible to freely change the flow rate and oxygen concentration of oxygen-enriched air, but for the user, what is the flow rate and concentration of oxygen-enriched air being sucked? Since it is difficult to recognize whether it is in such a state, as shown in FIG. 1, a display unit 11 made of an LED, a liquid crystal panel, or the like is provided outside the main body 1, and the flow rate of oxygen-enriched air discharged from the main body 1 If the display unit 11 displays a situation such as a change in oxygen concentration, it is more kind.

  Also, users who are sucking in oxygen-enriched air are relaxed and in some cases they close their eyes and use the oxygen-enriching machine, so the situation of oxygen-enriched air can be maintained even with their eyes closed. As can be recognized, the display unit 11 may be provided with means for generating a sound that changes depending on changes in the state of oxygen-enriched air.

  In the above embodiment, the description has been made on the assumption that the user arbitrarily selects or operates from the switch operation board 14 to change the flow rate and oxygen concentration of the oxygen-enriched air. It is most effective when a person sucks in oxygen-enriched air by automatically switching the flow path switching means 13a to 13d by the microcomputer and changing them in a certain cycle. It can be automatically changed to achieve a proper flow rate and concentration.

  Further, as the characteristics possessed by the oxygen-enriched membrane unit 2 itself, the flow rate characteristics and concentration characteristics of the membrane change with changes in ambient temperature. This is due to the temperature characteristics of the oxygen-enriched membrane itself, which is a basic member of the oxygen-enriched membrane unit 2. As the ambient temperature rises, the flow rate of air passing therethrough increases while the oxygen concentration decreases. It has the characteristics of

  Conversely, if the ambient temperature decreases, the flow rate of the passing air decreases, and conversely, the oxygen concentration increases. Therefore, a thermistor for detecting the ambient temperature in the control board 10 in order to prevent the flow rate and oxygen concentration of the oxygen-enriched air that is discharged from fluctuating depending on the ambient temperature when the main body 1 is operating. Temperature sensing element (not shown) is provided, and when the ambient temperature rises, the flow path switching means 13a-13d are controlled to reduce the flow rate of oxygen-enriched air, increase the oxygen concentration, and When the ambient temperature drops, the flow rate switching means 13a to 13d are controlled in the same manner to increase the flow rate of oxygen-enriched air and reduce the oxygen concentration. The flow rate and concentration of enriched air can always be stabilized.

  There are several types of basic configurations of the pump parts 5a and 5b, and there are mainly a diaphragm type and a locking piston type. Since the diaphragm type pump has a small oscillation width, the air pulsation is small and the pump characteristics are stable. As a result, the flow rate and concentration of oxygen-enriched air discharged from the main body 1 can be stably supplied. On the contrary, since the rocking piston type pump has a large swinging width, the air pulsation is large, but the intake / exhaust amount per one time is large, and the ultimate vacuum pressure can be made relatively high as a pump characteristic. The fact that the ultimate vacuum pressure can be increased means that the cross point between the flow rate characteristic and the concentration characteristic of the oxygen-enriched film can be shifted to the absolute vacuum side, so that a higher flow rate and concentration can be obtained.

(Embodiment 2)
FIG. 8 is a perspective view of an oxygen-enriched membrane unit of an oxygen enricher according to the second embodiment of the present invention, and FIG. 9 is a diagram showing the flow rate and oxygen concentration characteristics of the oxygen-enriched membrane unit. Note that the same parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the present embodiment, a plurality of oxygen-enriched membrane units 2 are used to change the flow rate and oxygen concentration of oxygen-enriched air.

  As shown in FIG. 8, a plurality of oxygen-enriched membrane units 2a and 2b are connected in series, and connection switching means 13e is installed in the connection path. In this case, as shown in FIG. 9, the flow rate characteristic of the membrane when using two units of the oxygen-enriched membrane units 2a and 2b is about twice that of the case of one unit. Therefore, the cross point with the pump characteristic moves from (b) to (d) in the case of one unit. As a result, the flow rate increases from about 3 L / min to about 5.3 L / min so that it can be read from the vertical scale. Further, the oxygen concentration moves from (c) to (e), and therefore decreases and changes from about 30% to about 27%.

  As described above, according to the above-described embodiment, it is only necessary to change the number of oxygen-enriched membrane units 2a and 2b using one suction means (either one of the pump unit 5a or the pump unit 5b). The flow rate and concentration of oxygen-enriched air can be changed. Further, when combined with the switching of the connection of the plurality of pump units 5a and 5b as described in the first embodiment, the flow rate and concentration of oxygen-enriched air can be changed in a wider area. Become.

  As described above, the oxygen enricher according to the present invention can freely change the flow rate and concentration of oxygen-enriched air, and is not limited to the oxygen enricher, but includes various suction devices including pumps and fans. It can be applied to equipment and devices.

(A) Front view of the oxygen enricher in Embodiment 1 of the present invention (b) Side view of the oxygen enricher (c) Rear view of the oxygen enricher (d) Cross section of the oxygen enricher Figure Connection diagram when using one pump unit in the oxygen enricher Connection diagram when using two pump units connected in parallel in the oxygen enricher (A) The figure which shows the flow volume-vacuum pressure characteristic of the oxygen enricher (b) The oxygen concentration-vacuum pressure characteristic of the oxygen enricher Connection diagram when using two pump units connected in series in the oxygen enricher (A) The figure which shows the flow volume-vacuum pressure characteristic of the oxygen enricher (b) The oxygen concentration-vacuum pressure characteristic of the oxygen enricher The exploded perspective view of the pump part The perspective view of the oxygen enrichment film | membrane unit of the oxygen enricher in Embodiment 2 of this invention (A) Diagram showing flow rate-vacuum pressure characteristics of the oxygen-enriched membrane unit (b) Diagram showing oxygen concentration-vacuum pressure characteristics of the oxygen-enriched membrane unit

Explanation of symbols

1 Oxygen enrichment machine (main unit)
2 Oxygen-enriched membrane unit (oxygen-enriching means)
5a, 5b Pump part (suction means)
6 Discharge port 7 Oxygen-enriched air discharge means 10 Control board 11 Display unit (display means)
12 Motor part 13a-13d Flow path switching means 13e Connection switching means 14 Switch operation board (switch means)

Claims (6)

A main body incorporating oxygen enriching means for generating oxygen enriched air; a plurality of suction means for sucking air through the oxygen enriched means; and the oxygen enriching means arranged downstream of the plurality of suction means. A discharge port that discharges the generated oxygen-enriched air; and a flow path switching unit that switches the flow path that connects the oxygen enrichment unit, the suction unit, and the discharge port, and is used by the flow path switching unit. An oxygen enricher configured to switch the number of suction means. A main body incorporating oxygen enriching means for generating oxygen enriched air; a plurality of suction means for sucking air through the oxygen enriched means; and the oxygen enriching means arranged downstream of the plurality of suction means. A discharge port that discharges the generated oxygen-enriched air; and a flow path switching unit that switches a flow path that communicates the oxygen enrichment unit, the suction unit, and the discharge port. An oxygen-enriching machine that can switch the configuration of the means so that it can be connected in series or parallel. A main body having a plurality of oxygen enriching means for generating oxygen-enriched air, a suction means for sucking air through the oxygen enriching means, and a downstream side of the suction means and generated by the oxygen enriching means A discharge port for discharging oxygen-enriched air and a path through which the plurality of oxygen-enriching means are connected and oxygen-enriched air is passed, and the number of the oxygen-enriching means to be used can be switched to the path. An oxygen enricher provided with connection switching means. The temperature detection means for detecting the ambient temperature is provided, and the flow rate or concentration of the oxygen-enriched air discharged from the discharge port is changed according to the temperature detected by the temperature detection means. The oxygen enricher according to any one of claims. The oxygen enricher according to any one of claims 1 to 4, wherein the suction means is formed by a diaphragm type vacuum pump. The oxygen enricher according to any one of claims 1 to 4, wherein the suction means is formed by a rocking piston type vacuum pump.