JPS5867449U

JPS5867449U - Breath sampling device in pressure chamber

Info

Publication number: JPS5867449U
Application number: JP16299881U
Authority: JP
Inventors: 石塚　文孝
Original assignee: 株式会社島津製作所
Priority date: 1981-10-30
Filing date: 1981-10-30
Publication date: 1983-05-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図はこの考案にかかる実施例装置の回路系統図、第
２図、第３図および第４図はこの装置におけるバッグ内
気体のパージ動作、バッグ内への呼気ガスの採取動作お
よび採取呼気ガスのバッグから分析装置への送気動作の
それぞれに関する動作シーケンスのブロック線図である
。０・・・・・・圧力室、３．　４．　５・・・・・・呼
気採取用バッグ（ダグラスバッグ）、６．　７．　８．
　９．　１０゜１１、　１ｉ−、１３，１４・・・・・
・２位置電磁開閉弁、１５・・・・・・３位置３ポート
方向切換電磁弁、１６゜１８・・・・・・圧力スイッチ
、１９・・・・・・差圧スイッチ、１７・・・・・・２
位置３ポート方向切換電磁弁、２０・・・・・・送気用
真空ポンプ、２１・・・・・・パージ用真空ポンプ、２
２・・・・・・減圧弁。FIG. 1 is a circuit diagram of an embodiment of the device according to this invention, and FIGS. 2, 3, and 4 show operations for purging gas in the bag, collecting exhaled gas into the bag, and collecting exhaled gas in this device. FIG. 3 is a block diagram of the operational sequence for each of the gas delivery operations from the bag to the analyzer. 0...pressure chamber, 3. 4. 5...Bag for exhaled breath collection (Douglas bag), 6. 7. 8.
9. 10゜11, 1i-, 13, 14...
・2 position solenoid on/off valve, 15...3 position 3 port directional switching solenoid valve, 16°18...pressure switch, 19...differential pressure switch, 17... ...2
Position 3 port directional switching solenoid valve, 20...Vacuum pump for air supply, 21...Vacuum pump for purge, 2
2...Reducing valve.

Claims

[Scope of utility model registration request]

``An exhaled gas sampling bag that collects the exhaled breath of a subject in a pressurized or depressurized pressure chamber, a plurality of open/close control valves attached to a pipe connected to the exhaled gas sampling bag, and a directional switching valve;
It is equipped with a pressure reducing valve, vacuum pumps for purging and air supply, and a control mechanism that controls these opening/closing control valves, directional switching valves, and vacuum pumps according to constant pipe pressure, and the residual gas in the bag is In purging the gas, when the pressure is equal to or higher than the predetermined pipe line pressure by actuation of the control mechanism, the residual gas is directly released into the outside air from one of the on-off control valves, When the pressure is below the channel pressure, the gas is discharged through the purge vacuum pump, and an analyzer is connected to the channel, and the sampled exhaled gas is sent to it from the bag from which the exhaled gas has been collected. In this case, when the pressure is equal to or higher than the predetermined line pressure due to the operation of the control mechanism, the precursor exhaled gas is sent through the pressure reducing valve by switching the line by the directional control valve, and the pressure is reduced. is below the certain pipe line pressure, the pipe is switched by the directional switching valve to supply air via the air supply vacuum pump,
a detection mechanism that detects the difference between the pressure in the pressure chamber and the internal pressure of the bag; and when the detected value reaches a predetermined value, the control mechanism is activated to discharge residual gas from the bag and supply sample gas to the bag. An exhaled breath sampling device in a pressure chamber, characterized in that it is equipped with an adjustment mechanism for stopping the.