JPH03242305A - Drain-treating apparatus of oxygen-enriching apparatus - Google Patents

Abstract

PURPOSE:To prolong the life of an oxygen-enriching apparatus by dropping drain separated by gas-liquid separator onto an evaporation plate made of a hydrophilic material and placed at an exhaust port and evaporating the drain on the plate. CONSTITUTION:A suction fan 12 and a vacuum pump 14 built-in a main body 1 having nearly vertically elongated rectangular parallelepiped shape are driven to introduce air from a suction port 4 through a duct 7 to a separation membrane module 9. An oxygen-enriched air having high oxygen concentration is separated through an oxygen-enriching membrane 9a, sent to the primary side of a heat-exchanger 6 from the discharging port 21 of the pump 14 through a discharging pipe 22, cooled with air introduced through the suction port 4, sent to a gas-liquid separator 25 from the secondary side 24 of the heat- exchanger through a pipeline 26 to separate drain and finally discharged from the main body 1 through a hose 27. The separated drain is dropped from the opening 29a of the pipe 29 onto the evaporation plate 30 made of a hydrophilic material and placed at the exhaust port 4 and evaporated by the oxygen- enriched air heated by the absorption of the heat generated by the pump 14.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to a drain treatment device in an oxygen enrichment machine, specifically, a separation membrane module having an oxygen enrichment membrane, and a method for condensing oxygen enriched air taken out from the module. The present invention relates to a drain treatment device for an oxygen enrichment machine, which comprises a gas-liquid separator for separating water and an exhaust port for nitrogen-enriched air.

(Prior Art) Conventionally, as an oxygen enrichment machine using a separation membrane module, for example, as shown in Japanese Patent Application Laid-Open No. 62-83304,
While the air introduced from the intake port is sent to the membrane element, that is, the separation membrane module by the action of a fan, the main body of the oxygen enrichment machine is provided with a vacuum pump, and the suction side of the pump is connected to the oxygen provided in the module. communicated with the enrichment membrane;
The vacuum action of the vacuum pump draws oxygen-enriched air from inside the module through the oxygen-enriched membrane, and the discharge side of the vacuum pump is connected to the separation means, i.e., via a cooling means, i.e., a heat exchanger. The air is connected to a water separator, and the separator separates gas and liquid for dehumidification, and the oxygen-enriched air whose temperature has been lowered by the heat exchanger is collected from the outlet and used for the purpose of use. In addition, on the other hand, the drain separated in the water separator is stored in a drain tank (
A).

As shown in FIG. 8, the drain stored in the drain tank (A) is treated by adding a lower end to the drain water stored in the drain tank (A). Water retention function member (B) and support member (C) to be immersed in the bath
) is provided, and the evaporation plate (D) is
) by sucking up the drain by capillary action, evaporating this moisture by exhausting nitrogen-enriched air, and discharging it outside the machine from the exhaust port of the nitrogen-enriched air. There is.

(Problem to be Solved by the Invention) However, in the conventional technology described above, the means for processing the drain separated by the water separator is provided with a drain tank (A) for storing the drain, and the drain tank ( A
) is provided with the evaporation plate (D) so that the lower end of the evaporation plate (D) is always immersed in the drain water in the drain tank (A), and the drain water is poured into the evaporation plate (D). The drain water is sucked by capillary action caused by the capillary structure and impregnated into the evaporation plate (D), and the drain water is vaporized by applying an exhaust air of nitrogen-enriched air to the evaporation plate (D) and discharged together with the exhaust air. Therefore, the evaporation plate (D)
If impurities such as dust adhere to the evaporation plate (D), the capillary structure of the water retention function member (8) constituting the evaporation plate (D) will become clogged, and the suction ability of the drain water will deteriorate accordingly. There was a problem that the function of the evaporation plate (D) was deteriorated.

For this reason, it is necessary to clean the drain tank (A) and replace the evaporator plate (D) each time, and the drain water may leak into the drain tank (A) due to the deterioration of the function of the evaporator plate (D).
There was also the problem that the water overflowed and leaked out of the machine, staining the installation floor.

The present invention was invented in view of the above-mentioned problems, and its purpose is to extend the service life of the evaporator plate by making it possible to perform drainage treatment without deteriorating even if impurities such as dust adhere to the evaporator plate. The present invention provides a drain processing device for an oxygen enrichment machine that can eliminate noise caused by exhaust air.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides oxygen enriched M (9
a); a separation membrane module (9) having the module (a);
9) In an oxygen enrichment machine equipped with a gas-liquid separator (25) for separating condensed water from oxygen-enriched air taken out from the air and a nitrogen-enriched air exhaust port (5), the exhaust port (5) is equipped with a hydrophilic The evaporation plate (3
0), and the opening of the drain pipe (28) extending from the separator (25) is exposed above the evaporation plate (30).

Further, it is preferable to provide a downward wind direction plate (30b) in the ventilation path (30a) of the evaporation plate (30).

Furthermore, a plurality of evaporation plates (30) having a plurality of ventilation holes (30c) are arranged in parallel at a predetermined interval, and the ventilation holes (30c) of each of the evaporation plates (30) are made to be mutually IIIM. It is okay to do so.

(Function) With the above configuration, the drain separated by the gas-liquid separator (25) is transferred to the drain pipe (29) above the evaporation plate (30) made of a hydrophilic material provided at the exhaust port (5). ), and the ventilation passage (30a) of the evaporation plate (30).
) by nitrogen-enriched air passing through the evaporator plate (30).
In addition, since the condensate penetrating from the upper part of the evaporation plate (30) can be vaporized successively, the condensate can be transferred to the -H drain tank (A) as in the conventional technique shown in FIG. At the same time, the drain water is sucked by the capillary action of the evaporator plate (D) whose lower end is immersed in the drain water stored in the tank (A), and the evaporator plate (D)
There is a risk that impurities such as dust adhering to the evaporator plate (D) may clog the capillary structure, deteriorating the capillary phenomenon and reducing the function of the evaporator plate (D). Even if impurities such as dust adhere to the evaporator plate (30) and the water retention capacity decreases, the evaporation function of the drain can still be performed, and therefore, the service life will be extended accordingly.

Furthermore, by providing a downward wind direction plate (30b) in the ventilation passage (30a) of the evaporation plate (30), the nitrogen-enriched air passing through the ventilation passage (30a) is exhibits a turbulent flow phenomenon, and the residence time around the exhaust port becomes longer, making it possible to further improve the effect of accelerating the evaporation of the water impregnated in the evaporation plate (30), and to reduce the impact of noise on residents. It can be done less.

Furthermore, by arranging a plurality of evaporation plates (30) in parallel at predetermined intervals and by mutually arranging the ventilation holes (30c) of the evaporation plates (30), it is possible to reduce the propagation of noise to the outside of the machine. The silencing effect can be further improved.

(Example) Hereinafter, a drain treatment device for an oxygen enrichment machine according to the present invention will be described based on an example shown in the drawings.

First, to explain the configuration of the oxygen enrichment machine to which the drain processing device of the present invention is applied, the main body (1) of the oxygen enrichment machine has an approximately elongated square box shape as shown in Fig. 1, and has casters ( 2
) to make it movable, and a filter (
3), and an exhaust port (5) at the bottom.

Therefore, inside the main body (1), the intake port (4)
A heat exchanger (6) is disposed at a position facing the filtration surface of the filter (3) provided in the filter, and the heat exchanger (6) is surrounded by a duct (7).

An opening (8) is formed in the lower surface of the duct (7), and a separation tube containing oxygen-enriched Nu (9a) made of silicone or the like is introduced from the opening (8) into the duct (7). The upper end (10) of the membrane module (9) on the next side is infiltrated, the module (9) is extended downward, and the lower end side surface of the module (9) is coated with the upper end (10) of the module (9). A discharge port (11) for nitrogen-enriched air serving as a secondary side is formed, and the discharge port (11) is communicated with a suction port (13) of a suction fan (12) adjacent to the discharge port (11). At the same time, the suction fan (12) is
4) is fixedly installed on the top plate of the pump casing (15), and the discharge port (16) of the suction fan (12) is connected to the inside of the pump casing (15) so as to be able to communicate with the inside of the pump casing (15). A vacuum pump (14) is provided inside the pump casing (15) via a vibration isolator (17) on the bottom plate thereof.
) is installed.

Thus, the suction side (18) of the vacuum pump (14) is communicatively connected to the convergence part (9c) of the oxygen enrichment membrane (9a) of the module (9) via the suction pipe (20). On the other hand, the discharge side (21) of the vacuum pump (14)
is connected to the downstream side (23) of the heat exchanger (6) via the discharge pipe (22), and the secondary side (24) of the heat exchanger (6) is connected to the gas-liquid separator ( A pipeline (26) is connected to the inlet side of the main body (25), and a hose (27) is connected to the outlet side of the hose (27). 28).

Further, a drain liquid drain hole is provided at the bottom of the separator (25), and a drain pipe (29) is connected to the drain hole,
The opening (29a) of the drain pipe (29) is arranged so as to be located above the evaporation plate (30), which will be described later, and which is located at the exhaust port (5) of the main body (1). .

On the other hand, the side wall of the pump casing (15) facing the exhaust port (5) has a double structure, and a ventilation window (32) is formed above the inner wall (31).
At the lower edge of 32), there is a resistance piece (32a) that protrudes outward.
), an outer wall (33) is provided at a position away from the inner wall (31) and facing the inner wall (31), and a ventilation window (34) is provided below the outer wall (33). form,
A resistance piece (34a) protruding inward is provided on the upper edge of the ventilation window (34), and the inside wall (31) and the outside wall (3
3) forms a gas resistance path (35).

The evaporation plate (30) is formed by molding using a hydrophilic material such as non-woven fabric impregnated with phenol resin, etc., and has a plurality of ventilation channels (30) on its evaporation surface.
0a), and these plurality of ventilation paths (30a) are provided with downward wind direction plates (30b). Further, the evaporation plate (30) is disposed inside an exhaust cover (36) having an exhaust opening (3 (3a)), and is connected to the exhaust port (5) of the body (1). It is detachably supported by the body (1) so that the passage (30a) can be communicated with the body (1).

In this embodiment, when forming the downward wind direction plate (30b) of the evaporation plate (30), when molding a hydrophilic material, the lower edge and both side edges of the air passage (30a) are completely sealed. At the same time as cutting, the upper edge is left alone, and the upper edge is used as a folding line to bend the surface formed by the cut lower edge and both edges outward and downward. Although formed inside the body, a separate wind direction plate (
30b) may be added.

Next, the operation of this embodiment configured as above will be explained.

The oxygen enrichment machine of the present invention is used to supply the oxygen-enriched air necessary to effectively maintain the action of the chemical solution, for example, when applying a chemical solution to hair permanently. , the drain generated in the step of collecting the oxygen-enriched air is separated in a gas-liquid separator (25),
The drain water accumulated in the separator (25) is treated as follows. That is, the drain is dripped onto the upper part of the evaporation plate (30) made of a hydrophilic material to retain water in the evaporation plate (30), and the drain retained in the evaporation plate (30) is transferred to the fan (12). It is vaporized by the exhaust air of nitrogen-enriched air.

That is, by driving a suction fan (12) installed in the main body (1) and a vacuum pump (14), air at atmospheric pressure is introduced into the duct (7) from the intake port (4), and the air at atmospheric pressure is introduced into the duct (7). The air is taken into the separation membrane module (9), and by passing through the separation membrane module (9), oxygen-enriched air with a high oxygen concentration is taken out via the oxygen enrichment III (9a) built in the module (9). Ru. The oxygen-enriched air sucked into the vacuum pump (4) passes from the discharge side (21) of the pump through the discharge vibrator (22) to the heat exchanger (6).
) is sent to the next side of the heat exchanger (8) by exchanging heat with the air introduced from the intake port (4) and cooled to room temperature, and is also cooled to the secondary side of the heat exchanger (6). The drain is sent from the side (24) via the vibrate line (26) to the gas-liquid separator (25), and is separated in the separator (25). The oxygen-enriched air is taken out of the body (1) through the hose (27) and is used for various purposes.

On the other hand, the drain dripping into the gas-liquid separator (25) naturally falls from the drain pipe (29) provided at the bottom of the separator (25) through the opening (29a) of the pipe (29).
It is dripped onto the top of the evaporation plate (30) provided at the exhaust port (4).

That is, by utilizing the characteristics of the hydrophilic material constituting the evaporation plate (30), the evaporation plate (30) is impregnated with the drain water gradually from the top to the bottom of the evaporation plate (30). This allows it to retain water. Further, the nitrogen-enriched air is discharged into the pump casing (15) through the discharge port (16) of the suction fan (12), and is discharged outside the machine from the exhaust port (5).

Thus, the nitrogen-enriched air discharged into the casing (15) cools the heat generated by the vacuum pump (14), and the nitrogen-enriched air itself absorbs the heat of the pump, resulting in a high temperature. The air flows out from the ventilation window (32) provided on the inner wall (31), passes through the resistance passage (35), and slows down the flow through the ventilation window (34) provided on the outer wall (36).
At this time, the drain water impregnated and retained in the evaporation plate (30) is heated by the high temperature air and evaporates. At the same time, the air is discharged outward from the exhaust port (5) through the ventilation path (30a) provided in the evaporation plate (30).

In this embodiment, by forming the resistance passage (35) in the pump casing (15) with the inner wall (31) and the outer wall (34), the flow velocity of the air flowing through the passage (35) is reduced. , the residence time of the nitrogen-enriched air within the casing (15) is increased, and the air is supplied to the vacuum pump (15).
Since the heat generated in step 4) can be sufficiently absorbed and the nitrogen-enriched air can be added at a high temperature, the effect of evaporating the drain liquid impregnated into the evaporation plate (30) can be promoted.

Further, in the embodiment shown in FIGS. 1 to 3, a downward wind direction plate (30b) is provided in the ventilation passage (30a) of the evaporation plate (30).
, the air passing through the ventilation path (30a) hits the downward wind direction plate (30b) and generates a turbulent flow phenomenon, which lengthens the time it takes to pass through the ventilation path (30a). In addition to improving the vaporization effect of the drain water impregnated into the evaporation plate (30) to retain water, it is possible to prevent high-temperature exhaust air from flowing back into the intake port (4), and in addition, the exhaust air can be directed downward, making it easier to live. The impact of noise on people can be reduced.

In the embodiment described above, a single evaporator plate (30) was used, but as shown in FIG. Board (3
0) may be provided with a plurality of ventilation holes (30c) forming a ventilation path, and these ventilation holes (30c) may be formed so as to be mutually arranged in each evaporation plate (30).

In this case, it is possible to achieve a muffling effect that can further reduce the propagation of noise to the outside of the machine due to the exhaust air passing through the vent hole (30c). Further, when a plurality of evaporation plates (30) are used, they may be arranged in parallel in the direction of exhaust from the exhaust port (5).

Although not shown in this embodiment, the evaporation plate (30)
A drain pan may also be provided below.

In this case, in the unlikely event that the evaporation plate (30)
30) It is possible to prevent leakage to the outside of the machine when drain liquid exceeding the vaporization capacity is dropped.

(Effects of the Invention) As explained above, the present invention provides a separation membrane module (9) having an oxygen-enriched membrane (9a) and a gas-liquid separator that separates the drain of oxygen-enriched air taken out from the Mogenir (9). (2
5) and an oxygen enrichment machine equipped with an exhaust port (5) for nitrogen-enriched air, in which the exhaust port (5) is provided with an evaporation plate (30) made of a hydrophilic material and having a large number of ventilation passages (30a). is provided, and the separator (
By facing the opening of the drain pipe (29) extending from the evaporator plate (30), drain water generated in the oxygen-enriched air sampling process is allowed to drip onto the upper part of the evaporator plate (30). By making use of the material properties of the material, water is retained by gradually infiltrating from the upper part to the lower part, and at the same time, it can be vaporized and discharged using the exhaust air of nitrogen-enriched air, so that impurities such as dust can be removed from the evaporation plate (30). Even if the water retention property of the evaporator plate (30) decreases due to adhesion of water, the evaporator plate (30) can still evaporate the condensate. It is possible to use the drain treatment device in the enrichment machine for a long period of time, and it is also possible to eliminate the possibility that the floor surface will be contaminated with drain liquid that overflows from the drain tank due to a decline in the function of the evaporation plate.

Further, by providing a downward wind direction plate (30b) in the ventilation passage (30a) of the evaporation plate (30), when the nitrogen-enriched air to be discharged passes through the ventilation passage (30a), the downward wind direction plate (30b) exhibits a turbulent flow phenomenon, and the residence time in contact with the evaporation plate (30) can be lengthened, so that the vaporization effect of the condensate that impregnates and retains water in the evaporation plate (30) can be improved. Additionally, since the exhaust air can be directed downward, the impact of noise on residents can be reduced.

Furthermore, by arranging a plurality of evaporation plates (30) having a plurality of ventilation holes (30c) in parallel at predetermined intervals, and making the ventilation holes (30c) of each of the evaporation plates (30) mutually Nitrogen-enriched air passing through the vent (30c), i.e.
In addition to reducing the transmission of noise from exhaust air to the outside of the aircraft,
Its silencing effect can reduce noise.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing the entire oxygen enrichment machine to which the device of the present invention is applied, Fig. 2 is a cross-sectional explanatory view explaining the operation of the main parts, Fig. 3 is a side view of Fig. 2, and Fig. 4 5 is a schematic diagram of an oxygen enrichment machine to which the present invention is applied, and FIG. 6 is a sectional view of a main part of a conventional example. (5)... Exhaust port (9)... Separation membrane module (9a)... Oxygen enrichment membrane (25)... Gas-liquid separator (29)... Drain piping (30)... Evaporation plate (30a) ...Ventilation channel (30b) ...Downward wind direction board (30c) ...Vent hole Figure 2 Figure 3 30cl Figure 4 0c Figure 6

Claims (1)

[Claims] 1) Separation membrane module (9) having an oxygen enrichment membrane (9a)
an oxygen enrichment machine comprising: a gas-liquid separator (25) for separating condensed water from the oxygen-enriched air taken out from the module (9); and an exhaust port (5) for nitrogen-enriched air; 5) is made of hydrophilic material and has a large number of ventilation channels (30a
) is provided, and this evaporation plate (30) is provided.
30) A drain processing device for an oxygen enrichment machine, characterized in that an opening of a drain pipe (29) extending from the separator (25) is exposed to the upper part of the drain pipe (29). 2) The drain processing device for an oxygen enrichment machine according to claim 1, wherein the ventilation path (30a) is provided with a downward wind direction plate (30b). 3) A plurality of evaporation plates (30) having a plurality of ventilation holes (30c) are arranged in parallel at predetermined intervals, and each of the evaporation plates (30)
2. The drain processing device for an oxygen enrichment machine according to claim 1, wherein the vent holes (30c) of the drain holes (30) are made to be in conflict with each other.