Selective gas enrichment appts.

Abstract

An apparatus for selectively enriching gas is provided to prevent a noise from a decompression pump or noise due to condensation generated in an air passage reaching a discharge port, and prevent backflow of condensation to the decompression pump. A gas enrichment unit(31) has a function of increasing concentration of a specific gas component, having an oxygen enrichment film. A decompression pump(32) is installed to feed the gas component. A discharge port(33) is formed to discharge the gas component fed from the decompression pump. An oxygen supply main pipe(34) connects the gas enrichment unit with the decompression pump. A discharge main pipe(36) is connected with a discharge side of the decompression pump. A trap(41) is installed in a part of an air passage reaching the discharge port from the decompression pump.

Description

technical field [0001] The present invention relates to a selective gas enrichment device having the function of increasing the concentration of a given gas component. Background technique [0002] In the past, for devices that use selective gas permeable membranes such as oxygen enrichment devices or nitrogen enrichment devices that relatively increase the concentration of specific gases, there have been various proposals for equipment such as medical oxygen enrichment devices, air conditioners, and air purifiers. proposal. [0003] For example, as equipment for increasing the oxygen concentration, an oxygen enrichment mechanism is installed on the outdoor unit of the separate type air conditioner, and the oxygen-enriched air is sent to the indoor unit through the delivery pipe, and released to the room to improve the oxygen enrichment mechanism. The oxygen concentration in the room of an air-conditioned space is provided to make occupants feel comfortable (for example, Pa...

AI Technical Summary

Problems solved by technology

[0009] However, in the conventional technology, there is a possibility that the following problems may arise

[0010] That is, first of all, at least on the secondary side of the selective gas permeable membrane, when the delivery path of the enriched air is exposed to a low temperature environment (for example, when the delivery path is exposed to the atmosphere outside the house, and the temperature of the atmosphere is very low lower), it is possible that the condensation water in the transmission channel freezes and the oxygen-enriched air cannot be sent into the room

Secondly, when dew condensation water is generated in the conveying path, when the flow of enriched air is conveyed to the room, there will be air pulsating or cracking sounds such as "fluttering" or "kuangkuang", which will be transmitted to the user's living environment. The interior of the room will make the user feel uncomfortable

Furthermore, when such condensed water flows in the reverse direction in the decompression pump, in addition to affecting the life of internal parts, if the pump compresses a large amount of condensed water, the compression mechanism may be damaged due to liquid compression.

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