JPS5934270A - Oxygen concentration control apparatus of recirculation type respirator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

This invention uses a circulatory respirator V to increase the concentration of drunkenness in one breath.
Concerning equipment that controls money. A fire breaks out in an underground mall, a factory, a building, a construction site W1, a tunnel A, a ship, etc., and smoke rises. When conducting firefighting operations or firefighting activities, conventional F[, compressed air (oxygen)
Exhaust respirators were widely used. However, this tights 'e' 5 Takasho container V this storage mail no 1 air (oxygen)
Inhale and exhale 1 part (-) ((It is uneconomical to emit 1 part (), and it has the disadvantage that it can only be used for a short time. This completely solves the problem. Instead of discarding the exhaled air to the outside, the purifier is passed through, and the carbon dioxide in the exhaled breath absorbs and removes the oxygen. ! Replenish the eye movement number by J amount 1, this J
In order to create a model (circulation force type) for re-evoking, it is possible to use one key between the main points. and ζa), the oxygen concentration in the air is t, 1, and the total temperature is about 21 taro, and when J1 is 1851 phantom, -F, there is a lack of oxygen. L. Iwarete 2),
and V-i), but J? In particular, since C does not have the function of keeping the oxygen concentration constant,
The oxygen concentration in the inhaled air (Lt) may decrease between 5% f and t1, so the worker, who was concerned about oxygen deficiency, was forced to do work 41 in a hurry. In view of this, when the oxygen concentration in the inhaled air decreases, all of the oxygen is forced into the circulatory system, and the oxygen is absorbed. The concentration is increased by 1, and the pillar prevents oxygen deficiency. All 1 degree control device is provided (
71 Uko-4 Ru thing. According to this invention, when the pressure in the circulation system Vδ becomes low -F (27) due to the absorption of carbon dioxide gas by the cleaning agent, the valve is automatically fully opened to allow carbon gas to flow into the oxygen-deficient circulation system. A circulation system [l + In the haustorium, the oxygen concentration in the intake air is detected, and if it is higher than the specified value, the
Second, with the intake operation, the pressure in the circulation rate passage is forcibly lowered, and as a result, acid accumulation is forced to flow into the circulation passage. T, I'm there. By the way, it is also preferable that the oxygen concentration in the exhaled breath becomes low in the circulation type Il+inhaler, and the oxygen concentration in the exhaled breath is low. In other words, if you use high concentration 1, all the oxygen will be wasted, and the duration of the high concentration 11 oxygen tank will be shortened.
,pine tree.・Therefore, in addition to the invention of ``t'', this invention is to suppress the ``2'' increase in arsenic concentration (by adding ψ and τ). dark

According to this invention, when the oxygen concentration in the intake air rises above the fixed value, By closing the oxygen supply line when
Restriction of oxygen in inhaled air: Regulation - J' 71. Embodiment 1 of the present invention The accompanying drawings are described below.-t'
,,acid. (clear) Here, the case of regulating Fj and the double edge of decreasing and increasing oxygen concentration will be explained. In Figure 1, the facepiece l is 111tζ from the nostrils of the face to the mouth.
l・It is something to cover. The exhaled air discharged from the facepiece 1 passes through the exhalation pipe A4, which has a built-in exhalation pipe *2 that opens only at 7 o'clock, and flows into the water purifier 7. Fill the inside of the cleaning can 7/(The cleaning agent 6 removes the carbon dioxide in the exhaled breath! 1.
The air is returned to the face piece 10 from the exposed can body 13 through an intake pipe 5 and an intake valve 4 that opens only during intake. An opening 17 is formed in the soil surface of the can body 13H1, and an opening 19 of a breathing bag 18 is connected to this opening 1'7. The breathing bag is made of a flexible, airtight material such as synthetic resin, and is designed to suppress pressure fluctuations in the circulation circuit n by opening the airtight line in response to breathing. High-pressure oxygen container containing high-pressure oxygen automatic pressure reducing valve 1
At the first meeting 117, the automatic pressure reducing valve 1.1, which is connected to the can body 13 and whose pressure inside the can body 1:1 decreases due to oxygen consumption, opens and oxygen is supplied into the can body 13. It looks like this. 10Kt High Pressure Oxygen Container" and 9 residual gauges have been added. If the pressure in the circulatory system becomes abnormally high due to the presence of oxygen, the wearer will experience a feeling of pressure. ：The unplugged Wr, the face piece J has an additional number 8 that activates when the pressure exceeds a certain level. The sudden thunder, magnetic valve 20 is arranged - new Z5 σ
) Lightning, A1 valve 20 regulates the drop in oxygen concentration in the intake air. In other words, if the wearer closes the breathing bag, no air will be introduced into the breathing bag it+r4- even if the wearer performs a folding motion, so the pressure in the can body 131'J will be low 1. When the can is opened, oxygen is supplied inside the can, and the rPf and green concentration in the can increase.Therefore, at the outlet of the automatic pressure reducing valve 11, there is an electromagnetic valve for opening and closing the oxygen supply path. A valve 21 is arranged. This 1(' is used to control the increase in oxygen concentration in the intake air by the magnetic valve 21. When this valve is closed, the aqueous solution is no longer supplied. , with the consumption of oxygen V (during exhalation σ) V/,
The cumulative concentration gradually decreases and the oxygen concentration detector 22 detects the oxygen concentration during breathing. Comparator 2: l is the preset oxygen concentration T limit 1 direct 1) + n i n (if the voice 1 is low, it is 20%) and the excited oxygen concentration detection wall is compared 2,
Tl) Ask the solenoid valve 20 of Il+n i t+ L'? ! ′! ! ' to (,2,+1 (' Dmin
) When closing 1, the oxygen concentration decreases completely.Z
・. Comparator 25+:1. Compare the oxygen immersion level upper limit value 11max (pH value; mouth IX) with the oxygen level detection value 1), +1 (R1m2x top solenoid valve 2): Opened. When D > DIηax, turn on the valve 26 and energize the solenoid valve 21.
This completely regulates the increase in the concentration of chlorinated C acid. As a result, the oxygen level during intake is controlled within the range of 2 () to 305 (), resulting in oxygen deficiency and oxygen concentration due to a decrease of 1 degree.
It is possible to prevent wasteful consumption of oxygen due to second elevation. p, in the above embodiment j, the respiratory organ J8', (1 can body 1
The case where this invention is applied to a circulation type respirator housed in Figure 3 is shown, but as shown in Figure 2, the air discharged from the cleaning canister 7 passes through the breathing bag 18' and reaches the breathing tube 5. L
In case of 7, it is good to place a solenoid valve 20 at the outlet of the clean or X77 to prevent the above-mentioned oxygen concentration from below A. As described above, according to the present invention, by setting the lower limit of the oxygen concentration, it is possible to prevent elemental depletion. -j lξ, this and bubble-) j- to control the oxygen concentration in the second limit, ri oxygen excess 1i-,
Oxygen Q) This can prevent wasted power consumption 2).

[Brief explanation of the drawing]

Fig. 1 IIJ, c- shows one embodiment 11 of the invention - Fig. 1, Fig. 2 1.7 This invention Q) Other embodiments 9', l ir,
FIG. l... face piece, 2. exhalation valve, : l... exhalation tube, 4 inhalation, square, 5... (reflector tube, 6... cleaning agent, 7... cleaning can, 8... Automatic drain, valve, S)...residual level gauge, 1.
O...High pressure oxygen container, 11...Self? Combined with decompression, 13
... Can body, I lj , , 1. l+'・callry1
bag.

Claims (1)

[Scope of Claims] 1. When the pressure in the circulatory system decreases due to absorption of carbon dioxide gas in exhaled air by the cleaning agent, oxygen automatically flows into the circulatory system. In a circulatory breathing machine VC that makes you feel sick,
A means for detecting the oxygen concentration in the air, a touch valve disposed at any part of the circulation system, and a means for detecting the oxygen concentration in the air, and a means for detecting the oxygen concentration in the air, and a means for detecting the oxygen concentration in the air, and a detection valve disposed in any part of the circulation system, and a means for detecting the oxygen concentration in the air. 2) Oxygen concentration control device for a circulation type respirator in which the valve is closed at s@ and the drive device is closed. 2 J-υ for the simultaneous absorption of carbon dioxide in exhaled breath by detergent C-
When the pressure in the circulatory system is low, oxygen automatically flows into the circulatory system. 2) A first valve disposed at a difference between the means and any one of the circulation system passages, and the oxygen concentration detection value being a preset oxygen concentration.
A driving device that closes the first valve when the leakage exceeds the F limit value, a second square in the arsenic supply system, and a % oxygen concentration detection value are preset in the arsenic supply system. An oxygen concentration control device for a circulation type respirator, comprising: a drive device that closes the second valve when the cumulative concentration upper limit value is exceeded;