SU63425A1 - Device for supplying oxygen from a cylinder to an oxygen mask - Google Patents

Description

At present, two types of oxygen devices are used for breathing at high altitudes;

1) open-air mask and

2) pulmonary devices. The former are characterized by a continuous jet of oxygen that is strictly dosed in flight altitude; the latter - by supplying oxygen or oxygen-enriched air only during inhalation in the volume of inhalation depth.

The present invention is intended to reduce breathing resistance in pulmonary devices, which currently ranges from 30 to 50 mm per column.

FIG. 1 is a general diagram of the device; FIG. 2 is a diagram of a contact device mounted on a pulmonary hose.

A special contact device for closing the electrical circuit, which acts on the feeding mechanism of the pulmonary device, is placed on the lung device hose in close proximity to the mask.

The contact device is a fire resistant box 1

made of electrically insulating material with a lid 2. The bottom of the box is connected with a hole to the breathing tube and the lid to the atmosphere. The following parts are placed in the box: metal contact half rings 3 and 4 insulated from each other with terminals for connecting wires. The furnace metal diaphragm 5 is supported from the inside by a spiral sensitive spring 6 at the cover 2. One of the half-rings is connected to a source of electrical current, the other is connected to an electromagnet 7, which, in turn, is connected to the other pole of the electric source to form an open circuit .

The scheme works as follows: at the beginning of a breath, some form is created in the mask (vacuum, as a result of which the sensitive diaphragm 5 under the influence of pressure difference overcomes the insignificant resistance of the spiral spring, is pressed to the contact rings 3-4, the circuit is an electromagnetic circuit.

acts on the oxygen supply valve of the dribor, supplying oxygen to the hose and then to the mask. As soon as the pressure in the mask and the contact box is equal to the atmospheric pressure, the diaphragm will return to its original position and the circuit will open, stopping further oxygen supply, etc.

The delivery is made either continuously (if it corresponds to the intensity of the inhalation) or small MIs, quickly following one after the other portions. In this case, the diaphragm, quickly vibrating, emits a low tone like a telephone buzzer, and the electromagnet, failing to follow the vibrations of the diaphragm, stops at some intermediate position, which corresponds to the required pitch. Since the internal resistance of the instrument and the hose in this scheme does not affect the human pulmonary system, there is no need to have special pulmonary hoses of increased diameter, which reduces their weight and inconvenience in exploitation. By reducing the pressure difference in the mask and atmosphere, the mask can be significantly less tight.

Subject invention

A device for supplying oxygen from a cylinder to an oxygen mask during breathing, characterized in that a spring-loaded diaphragm 5 is mounted in the breathing hose of the oxygen device, moving with the pressure change in the hose during breathing and turning the electromagnet 7 through or off through electrocontacts This is connected to the lever connected to the oxygen inlet valve into the hose and into the mask.

FIG. one

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FIG. 2