KR20210142324A - concentration conversion oxygen generator - Google Patents

Abstract

The present invention relates to a method for making oxygen of the same concentration and flow rate without fluctuations by determining purity and flow rate from the discharge itself rather than the conventional air mixing. The present invention can selectively control the purity and discharge amount of oxygen by applying a speed control valve or multiple orifices and a corresponding solenoid valve instead of an orifice for controlling the oxygen concentration of the discharge port, which is an important means of the PSA method.

Description

Concentration conversion oxygen generator

It is a technical description of the equipment that discharges by changing the concentration.

The principle of the existing PSA (Pressure Swing Adsorption) oxygen generator is a device that separates nitrogen and oxygen in the air using the selective adsorption power of the adsorbent (Zeolite). It is a method to selectively produce nitrogen and oxygen gas through continuous operation.

This is an equipment that can be used by selectively converting the oxygen concentration according to the user's request by changing the method.

Many people are getting enough oxygen for medical use and health.

In the future, the demand for oxygen generators will increase, and additional required functions will be required for the existing PSA oxygen generators.

The correlation between the oxygen discharge amount and purity of the PSA oxygen generator is inversely proportional.

When the purity increases, the discharge amount decreases, and on the contrary, when the discharge amount increases, the purity decreases.

Existing equipment fixed the discharge purity and added external air to adjust the purity and discharge amount.

However, in this method, variables (changes in purity and discharge amount) may occur depending on the external air pressure.

Therefore, there is a need for a method in which purity and discharge amount can be determined stably.

There is a need for a method that can continuously produce the purity and the amount of oxygen to be discharged, and to provide equipment accordingly.

Instead of the orifice for controlling the oxygen concentration of the outlet, which is an important means of the PSA method, a speed control valve or multiple orifices and a solenoid valve are applied accordingly to selectively control the purity and amount of oxygen.

This is a method different from the conventional method of mixing oxygen from an air compressor with high-purity oxygen through an external bypass. The method of applying the speed control valve is to open the valve differently depending on the purpose to control the concentration and the discharge amount, and the multiple orifices have different inner diameters according to the purpose so that the office that passes through the previously installed solenoid valve control is controlled. It is a method to control the purity and discharge amount differently.

According to the present invention, the concentration and discharge amount of oxygen can be fixedly discharged when the flow rate and purity are changed, which is a problem of the conventional method for controlling the concentration and discharge amount of oxygen through an external bypass.

1 is a method of changing the oxygen concentration and flow rate of a conventional oxygen generator.
Figure 2 is a method of changing the oxygen concentration and flow rate of the method of applying the speed control valve of the present invention.
3 is a multi-orifice and solenoid valve application method of the present invention.

In order to change the existing oxygen concentration and flow rate, a method of lowering the purity and increasing the flow rate by connecting the bypass 160 to the air compressor 110 and mixing it with the already generated oxygen 150 (see FIG. 1 ) was used.

In this way, it is necessary to use the part 150 for controlling the purity and the part 140 for controlling the bypass, so that a two-step process is performed.

So we devised a way to directly control it.

See Figure 2.

A speed control valve 250 was used instead of the existing orifice 150, and a control unit for controlling it was integrated into the PCB 240 to control oil cooling and purity.

Also see Figure 3 for another method.

By placing a tank 340 in which oxygen is collected, nitrogen is easily discharged from the adsorbents 320 and 330, and the orifices 360, 370, and 380 with different inner diameters suitable for each flow rate and purity in the solenoid valve 350 are selectively used to control the flow rate and purity. It was adjusted so that it could come out.

Figure 1
110: air compressor
120: adsorbent 1
130: adsorbent 2
140: solenoid valve for bypass control
150: oxygen tank
160: air for mixing
170: mixed gas
Figure 2
210: air compressor
220: adsorbent 1
230: adsorbent 2
240: Control PCB
250: speed control valve
260: oxygen tank
Figure 3
310: air compressor
320: adsorbent 1
330: adsorbent 2
340: oxygen tank
350: solenoid valve
360: Orifice 1
370: Orifice 2
380: Orifice 3
390: discharged oxygen tank

Claims (2)

How to change the purity and flow rate by adjusting the speed control valve instead of the orifice with a PCB
The method according to claim 1, wherein the purity and flow rate are controlled by adjusting the solenoid valve by placing a solenoid valve and multiple orifices with different inner diameters at the bottom instead of the speed control valve.

Images