JPH0714493B2 - Oxygen enrichment equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION a) Field of Industrial Application The present invention utilizes air paramagnetism and combines air with a high oxygen content and a low oxygen content by combining with a vortex tube. , Which is a device for separating into two gases. B) Conventional technology Currently, the most common method for separating air into oxygen and nitrogen is to cool and liquefy compressed air and separate it in a rectification tower. A method of using a thin film having higher permeability, a method of using an adsorbent known as pressure swing, and a method of sucking oxygen-rich air in the vicinity of a magnet, which has not been put into practical use, have been announced. C) Problems to be solved by the invention Although the conventional methods have their respective characteristics, the air separation device is usually large, and the pressure swing method requires regeneration of the adsorbent. By the membrane separation,
It is necessary to operate at high temperature like Paradium, or it is inefficient at normal temperature. The method of sucking air near a magnetized nozzle or magnet is not efficient. D) Means for solving the problems Vortex tubes are known to allow compressed air to flow tangentially into the tubes, which allows hot and cold air streams to be obtained from both ends of the tubes. It is used for personal air conditioning. However, it is also recognized that the vortex tube has the property of gas separation, and when air is used, the oxygen concentration in the air flowing out from the low temperature side becomes high. However, as it is, it is inefficient and not practical. The present invention has been made to solve the above-mentioned problems, and the device of the present invention has a compressed air inflow nozzle tangentially at one end for producing a gas having a high oxygen concentration from air. A vortex tube provided with a magnetic field, wherein the compressed air flowing tangentially into the tube from the nozzle is used to increase the oxygen concentration in the reverse flow generated in the central portion of the tube. The feature is that a magnetic force gradient is provided so that the magnetic field at the center becomes stronger in the radial direction. Since the present invention is configured as described above, when a magnetic field is applied to the vortex tube so as to attract oxygen to the low temperature side, oxygen has paramagnetism while nitrogen has reactive magnetism, so that more oxygen is generated. Gas that flows into the low temperature side and has a high oxygen content can be obtained efficiently. D) Operation and Examples Next, examples of the present invention will be described. First example Air chamber (2) on vortex tube (1)
When the compressed air is introduced tangentially from the nozzle (3) and the magnetic coil (5) is wrapped around the cold air flow control valve (4) of the cold air and warm air flow control valves to apply a magnetic field, Oxygen concentration increased. Second Example In the same vortex tube (1) as the first example,
It was made of plastic so as not to interfere with the formation of the magnetic field, and when a magnetic coil (5) was installed around the tube and a magnetic field was applied, the oxygen concentration on the cold side increased. Third example When the inner nozzle (6) is installed inside the vortex tube (1) and the one that is not magnetized and the one made with permanent magnet are compared, it is better to use the inner nozzle of permanent magnet The oxygen concentration became high. Other Embodiments A magnet coil or a permanent magnet may be used if the magnetic field is stronger in the central part or in the cold side from the center to the outer periphery of the vortex tube. You may use together. A combination of the three methods of the embodiment is also possible. E) Effect of the invention The vortex tube generates swirling flow along the wall surface inside the tube when compressed air is introduced at high speed from several nozzles that are opened tangentially around one end of the tube, and at the other end Although it flows toward the outside and flows out to the outside, a low zone is generated in the center of the pipe in proportion to the velocity of the swirling flow inside, so the center of the inlet of compressed air has the lowest pressure, and A pressure gradient is generated toward the center. Therefore, a reverse flow occurs in the center of the pipe, and if an orifice is provided at the center of the pipe at the inflow end of compressed air, cold air will flow out from the orifice, and this is used for personal cooling. At this time, the oxygen concentration in cold air becomes 1-2% higher than that in warm air. When a magnetic field that increases the magnetic flux density toward the center is applied to this vortex tube, oxygen has paramagnetism and nitrogen has antiparamagnetism, so oxygen is attracted to the center and nitrogen is repelled, By applying a magnetic field, the oxygen concentration in the reverse flow of the central part is
It can be made higher.

[Brief description of drawings]

 1 is a sectional view of the first embodiment. FIG. 2 is a sectional view of the second embodiment. FIG. 3 is a sectional view of the third embodiment. 1 is a vortex tube 2 is an air chamber 3 is a nozzle 4 is a flow control valve 5 is a magnet coil. 6 is an inner nozzle

Claims (1)

[Claims] 1. A magnetic field vortex tube for producing a gas having a high oxygen concentration from air, wherein a nozzle for injecting compressed air is provided tangentially at one end of the tube. In order to increase the oxygen concentration in the reverse flow generated in the central part of the tube by the compressed air flowing tangentially to the tube, a magnetic force gradient is provided so that the magnetic field in the central part of the tube becomes strong in the radial direction. Characteristic, oxygen enrichment device.