Automatically adjusted respirator

Abstract

The invention provides an automatically-adjusted respirator. The automatically-adjusted respirator comprises a breathing head, a breathing bag, a purification tank, an oxygen bottle and a first auxiliary gas bottle. The breathing bag comprises a breathing air bag, an expiration tube and an inspiration tube; one end of the exhalation tube is communicated with the breathing head, and the other end is communicated with an air inlet of the purification tank; the purification tank absorbs carbon dioxide and / or generates oxygen; an outlet of the purification tank is communicated with the breathing airbag; one end of the inspiration tube is communicated with the breathing air bag, and the other end is communicated with the breathing head; according to the submerging depth, the air supply amount of the first auxiliary air bottle and the oxygen bottle to the breathing air bag is adjusted. The respirator has the advantages that gas with different components and different flows is automatically supplied, manual operation is not needed, safe breathing of a diver can be guaranteed, the operation efficiency can be improved, shallow diving of 120 m or above can be achieved, and the service life is not shorter than 5 h.

Description

technical field [0001] The invention relates to a diving respirator. Background technique [0002] Diving respirators can usually be divided into two categories: open rebreathers and rebreathers. Open rebreathers adopt the principle of open breathing. The gas exhaled by divers is directly discharged into the water. It is often used for diving in air shallower than 40m. The respirator can purify the gas exhaled by the diver and then provide it for the diver to breathe again, which not only saves the breathing gas, but also improves the concealment because there are fewer air bubbles removed. Therefore, except that the rebreather is widely used in military diving, it is also more and more paid attention to in the fields of recreational diving and engineering diving. Among the rebreathers, the working principle of quantitative air supply is widely used in China at present. The working depth of this type of respirator is usually shallower than 40m. It needs to be preset accordi...

AI Technical Summary

Problems solved by technology

Among the rebreathers, the working principle of quantitative air supply is widely used in China at present. The working depth of this type of respirator is usually shallower than 40m. It needs to be preset according to the diver's expected working intensity and depth before diving. The jet flow rate and the oxygen concentration in the breathing mixture are subject to certain restrictions in use; another form is the principle of breathing pure oxygen shallowly at 7m and breathing nitrogen-oxygen mixture at 7m~40m

This respirator can only simply switch between the two air supply methods manually, and cannot be adjusted, nor is it suitable for diving at more depths

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