JPS58222A - Gas supply device utilizing gas-selective high-polymer film - Google Patents

Abstract

PURPOSE:To adjust easily concentrations of components in a gas to desired values continuously, by providing an air mixing port, which has a mixed flow rate adjusting valve, in the titled gas supply device which concentrates the required components. CONSTITUTION:Air sucked from a suction inlet 5 through a filter 6 by a blower 9 is converted to a gas including required components much in the hollow part of a film cell 10 during the passage through the film cell 10. This gas is sucked by a vacuum pump 18 and is supplied from a supply hole 25 through a heat exchanger 23, a water separator 24, a flow rate adjusting equipment 26, an activatd carbon layer 28, and a filter 29; and at this time, concentrations of components are adjusted to required values by air whose suction is adjusted by a flow rate adjusting valve 22 provided in an air mixing port 21.

Description

Detailed Description of the Invention The present invention relates to a gas supply device that supplies a gas rich in necessary components by using a gas-selective polymer membrane that selectively permeates a certain substance. The purpose is to allow the concentration of ingredients to be easily adjusted.

In conventional gas supply devices, the components contained in the gas obtained by permeating the polymer membrane are constant, so in order to change the component concentration, the amount of component permeability of the polymer membrane must be changed. Therefore, there was a drawback that the component concentration could not be easily adjusted.

The present invention solves the above-mentioned conventional drawbacks, and embodiments thereof will be described below with reference to FIGS. 1 to 3.

In the figure, reference numeral 1 denotes a main body of a gas supply device in the form of a housing in which an intake chamber 2 and an exhaust chamber 3 are partitioned by a partition plate 4, and is made of a soundproof material. Reference numeral 6 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, and 7 indicates an air intake port provided in the partition plate 4 so as to communicate the intake chamber 2 with the exhaust chamber 3. A ventilation port 8 is provided to communicate with the exhaust chamber 3, and a reference numeral 9 is an exhaust port provided in the intake chamber 2.

Outside of the air blowing, an air flow is formed from the intake port 6 to the exhaust port 8 via the ventilation lower. 1o is a membrane cell provided between the intake port 6 and the blower 9, in which a hollow space is formed between the reinforcing plate 11 and a gas-selective polymer membrane 12 having high permeability to components necessary for the reinforcing plate 11. It is constructed by installing a large number of flat membrane modules 14 at intervals, each of which has a ventilating material inside and is bonded around the periphery, and has a connecting port 13 communicating with a hollow part formed in a part thereof. Reference numeral 16 denotes a pump chamber partitioned by a soundproof wall 16 so as to communicate with the ventilation lower in the exhaust chamber 3, and a communication port 17 for exhausting the air toward the exhaust port 8 is formed. Reference numeral 18 denotes a vacuum pump installed on the electrically insulating rubber 19 in the pump chamber 15, and connected to the connection port 13 of the membrane module 14.
21 is connected to the tube 20 and is provided so that the hollow part of the membrane module 14 is evacuated and a gas having a high concentration of necessary components is obtained through the membrane 12. A mixing flow rate control valve 22 for adjusting the flow rate of atmospheric air is provided at the atmospheric mixing port.

A coil-shaped heat exchanger 23 is provided in the air flow path formed by the blower 9, and one end is connected to the discharge side of the vacuum pump 18, and the other end is connected to the water separator 24. 25 is a supply port for concentrated component gas provided in the main body 1;
The concentrated component gas from which water has been removed in the water separator 24 is transferred to a flow rate regulator 26, a flow meter 27, an activated carbon layer 28, and a filter 29.
connected to be supplied through the Reference numeral 30 denotes a moisture evaporation plate that receives and evaporates the moisture separated by the water separator 24, and is provided so that the moisture is evaporated by the air flow from the communicating part of the pump chamber 15 toward the exhaust port 8.

In the above configuration, when the blower 9 and the vacuum pump 18 are operated, air is sucked in from the air inlet 5 of the main body 1 by the blower 9 via the filter 6, and the sucked air is passed between the membrane module 14 provided in the membrane cell 1o. pass through. At this time, the air in the hollow part of the membrane module 14 attempts to become a vacuum state by the vacuum pump 18, so the membrane module 1
A large amount of the necessary components permeate through the membrane 12, which allows the necessary components to pass through the membrane 12, and the inside of the hollow portion becomes a gas containing a large amount of the necessary components. The high temperature gas obtained in the membrane cell 1o is transferred to the heat exchanger 2 by a vacuum pump 18.
The air flow generated by the blower 9 cools the heat exchanger 23 to condense the moisture, and is sent together with the moisture to the water separator 24 where the moisture is separated. The flow rate of the gas from which the moisture has been separated is adjusted by a flow rate regulator 26, and the gas is transferred to an activated carbon layer 28.
The gas is deodorized by the filter 29, and then purified by the filter 29, and a gas enriched with predetermined components is supplied from the supply port 25.

On the other hand, the water separated by the water separator 24 is transferred to the water evaporating dish 3.
Sent to 0. After passing through the heat exchanger 23, the airflow from the blower 9 enters the pump chamber 15 through the ventilation lower, contacts the vacuum pump 18, and reaches a high temperature.
It evaporates when it comes into contact with moisture, and is discharged from the apparatus through the exhaust port 8.

Next, when it is desired to adjust the concentration of the necessary components, the opening of the mixing flow rate control valve 22 provided at the air mixing port 21 is adjusted to allow a predetermined amount of air to pass through, thereby keeping the necessary imaginary component constant. Air is mixed in the pipe 2o through which the gas whose volume is being reduced is mixed, and the concentration of the necessary components is lowered. Therefore, by adjusting the degree of mixing of the atmosphere using the mixing flow control valve 22, the concentration of the necessary components can be easily adjusted.

As described above, according to the present invention, by using a gas-selective polymer membrane that allows a predetermined amount of necessary components to pass through, and by providing a mixing flow rate adjustment valve, it is possible to continuously and easily adjust the concentration of the necessary components in the concentrated gas. It has the effect of being adjustable.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view of a gas supply device according to an embodiment of the present invention, FIG. 2 is a partially sectional side view of a membrane module of the same device, and FIG. 3 is a perspective view of a membrane cell of the same device. . 12 ++w+a gas selective polymer membrane, 18...
, Vacuum pump, 21 , Atmospheric mixing port, 22
, , , , Mixed flow control valve. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure @3 figure

Claims (1)

[Claims] A gas supply device that sucks gas through a gas-selective polymer membrane using the suction force of a vacuum pump, selectively permeates necessary components, and supplies gas with an increased concentration of selected components. , a gas supply device using a gas-selective polymer membrane, characterized in that an air mixing port having a mixing flow rate control valve is provided in the middle of a suction circuit sucked by a vacuum pump to adjust the concentration of selected components. .