Structure of pure oxygen generation assembly and micro-oxygen therapeutic instrument comprising pure oxygen generation assembly

Abstract

The invention provides a structure of a pure oxygen generation assembly and a micro-oxygen therapeutic instrument comprising the pure oxygen generation assembly. The structure of the pure oxygen generation assembly comprises a gas end plate, a membrane electrode assembly, an oxygen end plate and a gas collection seat which are stacked sequentially and tightly wound into a whole by an insulating tape. The structure of the pure oxygen generation assembly is characterized in that the gas end plate is a hole-free end plate; a metallic gasket is arranged between the gas end plate and a cathode gas diffusion layer of the membrane electrode assembly; the thickness of the metallic gasket is less than that of the gas end plate; the areas of the gas end plate and the cathode gas diffusion layer are greater than that of the metallic gasket; and air channels are formed between the circumference of the metallic gasket and the gas end plate and between the circumference of the metallic gasket and the cathode gas diffusion layer. The structure of the pure oxygen generation assembly is advantageous in that, contact resistance is reduced, assembly input voltage is reduced, and current collection effect is improved, thereby slowing down electrochemical corrosion of the pure oxygen generation assembly and prolonging the service life of the pure oxygen generation assembly. The micro-oxygen therapeutic instrument can reach the expected service life, and avoids hidden dangers in use.

Description

Technical field [0001] The present invention relates to the technical field of electrochemical production of pure oxygen, in particular to a portable miniature oxygen generator, and in particular to a structure of a pure oxygen generating assembly and a micro-oxygen therapeutic apparatus containing the assembly. Background technique [0002] Chinese patent CN102330107B discloses that a self-breathing electrochemical pure oxygen generating component is encapsulated by a binder. In the component, a porous gas end plate, a membrane electrode assembly, and an oxygen end plate are sealed and connected in sequence, and the membrane electrode assembly is connected to the porous gas end plate and the oxygen end. The outer edge surface of the joint of the board is respectively provided with packaging grooves, and the rapid packaging of the components is realized by filling the adhesive in the packaging grooves. Although the packaging efficiency of the components is higher and the productio...

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Problems solved by technology

[0002] Chinese patent CN102330107B discloses a self-breathing electrochemical pure oxygen generation assembly packaged with an adhesive, in which the porous gas end plate, membrane electrode assembly, and oxygen end plate are sealed and connected in sequence, and the membrane electrode assembly is connected with the porous gas end plate, oxygen end Packaging grooves are respectively provided on the outer edge of the connection of the board, and the rapid packaging of the components is realized by filling the packaging grooves with adhesive. The tightness of the connection between the cathode gas diffusion layers of the components is poor; for this reason, the Chinese patent CN103173781A discloses that the porous gas end plate, the membrane electrode, the oxygen end plate and the inner gas collection base are tightly wound with an insulating tape on the outside to make the porous The gas end plate is closely attached to the cathode gas diffusion layer, but the current collection effect between the porous gas end plate and the cathode gas diffusion layer is poor. Through a large number of experiments, we found that punching holes in the conductive porous gas end plate will make the conduction The rigidity of the porous gas end plate is greatly reduced. Under the shackles of the outer tightly wound insulating tape, the porous gas end plate will be slightly arched, and a micro gap will be formed between the porous gas end plate and the cathode gas diffusion layer. The micro gap is only It can only be found under microscopic conditions and cannot be recognized by the naked eye, resulting in increased contact resistance and poor current collection effect. The poor current collection effect is reflected in the high input voltage of the component, which will accelerate the electrochemical corrosion of the component and reduce the service life of the component.

[0003] The oxygen therapeutic apparatus containing the pure oxygen generating component is suitable for people whose body surface is damaged and causes trauma. A functioning oxygen therapeutic apparatus is related to the normal life and even life and health of such people. Structural problems, the higher the input voltage, the faster the electrocorrosion rate of the pure oxygen generator components, resulting in reduced component life, and the above-mentioned applicable people cannot know the service life of the pure oxygen generator components, and there are hidden dangers in use

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