JPS61100265A - State display apparatus of 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 Field of Industrial Application The present invention relates to an open type respirator that supplies respiratory gas and releases exhaled air into the atmosphere, and a device that cleans exhaled air and supplies it to the human body together with fresh inspiratory gas. This invention relates to a device for displaying pigs with a recirculating respiratory system.

Background technology Self-contained breathing apparatuses have become indispensable equipment for rescue operations in the event of disasters in mines, as well as firefighting and rescue operations in the event of general urban fires and other disasters. Many air breathing apparatuses are used.

Ensuring safety during firefighting and rescue operations is the most important element, and this! Such air breathing apparatus must be adequately equipped to protect against the ingress of toxic gases during activities in toxic gases. In addition, as a method to ensure safety during the use of respirators, we have traditionally equipped them with pressure indicators that can check the residual pressure of the air being carried, or the amount of remaining air has been reduced to, for example, approximately 20% of the amount of air that is being carried. It is equipped with an alarm that will issue an alarm when this occurs.

Problems to be Solved by the Invention In such prior art, users may be unfamiliar with how to handle a respirator), may misread the numbers on the pressure indicator, or may misread the remaining air amount. There is a risk that unexpected accidents may occur due to failure to grasp the situation, and sufficient safety cannot be ensured.

An object of the present invention is to provide a respiratory status display device that is easy to operate and can ensure sufficient safety.

Means for Solving the Problems The present invention provides a pressure detector for detecting the pressure of intake gas in a pressure vessel, a means for discriminating the output level of the pressure detector, and a means for discriminating the output from the level discriminating means. , means for electrically displaying the pressure state of the pressure vessel.

A preferred embodiment is characterized in that the pressure detector is provided with a constriction that exclusively faces the air pipe for discharging waste gas from the pressure vessel, and the intake gas is supplied through this constriction.

In a further preferred embodiment, the main case that houses the level discrimination arm and the electric display means described in 01j, and the storage case that houses the battery that powers the pressure detector are connected electrically by an electric connector. The invention is characterized in that they can be collected integrally with each other in contact with each other, and that the collection form can be released and divided into parts.

In a further preferred embodiment, the MFJ case is equipped with a chamber door switch for providing a hand-operated operating section and for supplying power from the battery to the level discrimination means, the electrical display means and the pressure detector. The room door switch is equipped with a cover that can open and close the operating section of the power switch.

A further preferred embodiment is characterized in that the electrical display means includes means for generating sound in response to the pressure of the intake gas in the pressure vessel.

In a further preferred embodiment, the power switch hand vJ
The present invention is characterized in that the switching rate is changed by 5% by operation, thereby activating the sound generating means and continuing to generate sound.

In a further preferred embodiment, the electrical connector allows the main case and the storage case to be mutually changed while keeping them electrically connected, and 1) the two-level discrimination stage includes:
It has a manual adjustment means for adjusting the pressure of the intake gas in the pressure vessel to a discrimination level corresponding to a predetermined value, and the manual adjustment means adjusts the discrimination level in a state where the main case and the storage case are shifted. The manual adjustment means is covered by the storage case when the main case and the storage case are installed.

In a further preferred embodiment, the electrical indicator has a plurality of indicator lights, which indicator lights are selectively activated after the power switch is turned on, in response to the pressure in the pressure vessel. Features.

A further preferred embodiment is characterized in that the indicator light emits light.

In a further preferred embodiment, the ball case C is provided with a battery voltage detection circuit for detecting the voltage of the battery, and the battery voltage detection circuit detects when the battery voltage is below a level predetermined by the battery voltage detection circuit. The present invention is characterized in that the battery voltage reduction indicator light is disabled when the sound generating means is activated, and the battery voltage reduction indicator light is disabled when the sound generating means is activated.

According to the present invention, a pressure detector for detecting the pressure of intake gas in a pressure vessel and a means for level-discriminating the output from the pressure detector are provided, and the level discrimination means for detecting the pressure of the pressure vessel in response to the output from the level discrimination means is provided. By electrically displaying the pressure status, the remaining amount of intake gas can be detected easily and reliably, ensuring sufficient safety.
! Embodiment FIG. 1 is a perspective view of one embodiment of the present invention, FIG. 2 is a perspective view showing its use, and FIG. 3 is a perspective view of another embodiment of the invention. The open breathing apparatus 1 is connected to a pressure vessel 3 attached to a backpack 2 to compress and seal inhaled gas, a blockage valve 4 attached to the pressure vessel 3, and communicated with the blockage valve 4 via an air guide pipe 5. The pressure reducing valve 6 is connected to the pressure reducing valve 6 via the intake pipe 7.
, and a status display device 10 according to the invention provided in connection with the air conduit 5 .

When a fire accident occurs and it is necessary to evacuate urgently, the pressure vessel 3 is carried on the back with the shoulder belt 15 of the knapsack 2 over the shoulder, and the gauging device 4 constituting the status display device 10 is used.
At the same time, tighten the waist belt 16 to which the hood 8 is attached.
put it over your head, and use the knob 4a to open the blocking valve 4. When the blocking valve 4 is opened, approximately 15
Air with a high pressure of 0 kg/cm2 is supplied to the pressure reducing valve 6 through the air guide pipe 5, and the pressure is reduced to approximately 5 kg/cm2 at the pressure reducing valve 6.
The intake gas whose pressure has been reduced is supplied into the hood 8 via the intake pipe 7. The head of the person wearing the respirator is airtightly covered by the hood 8, and the breath of the person wearing the respirator is covered by the hood 8.
The rice is released into the atmosphere through an exhalation valve 17 provided in the field. In this way, the person wearing the respirator can evacuate while breathing with the intake gas supplied from the pressure vessel 3 into the hood 8. In addition, the pressure reducing valve 6tfi, as shown in FIG. 3,
It may be provided near the blocking valve 4, and the pressure detector 1
1 may be provided with a pressure indicator 184.

FIG. 4 is a sectional view of the pressure detector 11, and FIG. 5 is an enlarged perspective view of the pressure sensing cylinder 19 and its vicinity. A pressure detector 11 that detects the internal pressure of the pressure vessel 3 is attached to a branch pipe 20 that communicates with the air guide pipe 5. This pressure detector 11 consists of a connecting part 21 connected to a branch pipe 20, and a detector main body 24 fixed to the connecting part 21 with fixing pins 22, 23. The connecting part 21 has a T-shaped cross section, and the straight part 25
is connected to the end of the branch pipe 20 via a threaded portion 25a, and its extension portion 26 is fixed to the detector body 24 by a fixing pin 22.23. This connecting part 21 has a branch pipe 20
An intake gas passage 27 is formed which communicates with one side of an intake gas passage 28 formed in the detector main body 24, and a connecting portion 2 of this intake gas passage 27.28.
0 ring 30 is thrown on 9, and 0 ring 3 with
0, the intake gas passages 27 and 28 are maintained airtight.

The detector main body 24 has a throttle member 3 facing the intake gas passage 28.
1 and the intake gas passage 2 through the throttle 32 of the throttle member 31.
8 and a pressure sensing cylinder 19 communicating with the pressure sensing cylinder 8 . Pressure sensing tube 1
9 is a filler 34 such as a synthetic resin in the first bottomed cylinder 33.
, one end 19a faces the bottom 33a, and the other end 1
9b is housed and held so as to protrude from the entrance end 33b.

A connecting cylinder 35 into which the aperture member 31 and the other end 19b of the pressure sensor @1'9 are pushed is fixed to the open end 33bK of the first bottomed cylinder 33. Between the outer periphery of the connecting cylinder 35,
A fitting opening F5°r36 and an external thread 37 are formed, and the fixing pins 1.2°, 2
3. Okay. 3゜1. - Squid 1. The internal thread 39 of the second cylindrical body 38 is screwed together.

A space 40 that communicates with the intake gas passage 28 formed in the second bottomed cylinder 38 is formed between the head 35a of the connecting cylinder 35 and the one-sided part 38a of the second bottomed cylinder 38. be done. This space 40 is connected to the O-ring 1 interposed between the fitting recess 36 of the connecting cylinder 35 and the open end 38b of the second bottomed cylinder 38.
00a maintains an airtight state.

High-pressure intake gas, which is injected from the air conduit 5 via the branch pipe 20, is supplied into the space 40 via the intake gas channels 27,28. This intake gas flows through the throttle 3 of the throttle member 31.
2 from the other end 19b side of the pressure sensor a19. A pair of strain detection elements R1 and R2, called strain gauges or the like, having a resistance value corresponding to the pressure of the intake gas are housed on the outer circumferential surface of the central portion of the pressure sensing tube 19.

The pressure sensing tube 19 is
The pressure of the intake gas within is detected. Pressure sensing tube 19o''
″″″1 part 19° “・＊″″': y'-shaped 0 deformation inhibited! A stopping member 41 is installed, and on the outer peripheral surface of this deformation preventing member 41, a pair of strain detection ropes R3 and R4 for temperature compensation, which have the same configuration as the strain detection ropes R1 and R2, are provided. It will be collected. The strain detection ropes R1 to R4 can detect the air pressure in the pressure vessel 3, as will be described later. Furthermore, by interposing the ridge member 31 between the space 40 communicating with the intake gas passage 28 and the pressure sensing cylinder 19, the pressure sensing cylinder 19 may be damaged, and high pressure air may leak into the intake gas. Spraying from the passage 28 to the outside via the space 40 is prevented.

6 is a front view of the casing 14, FIG. 7 is a right side view of the gauging 14, FIG. 8 is a left side view thereof, and FIG. 9 is a plan view thereof.

Gauging 14 is performed by power switch SW1, level adjustment (
The main case 43 includes a one-permit switch SW2, an alarm sound stop switch SW3, and an emergency alarm switch SW4, and a storage case 44 that houses a battery E for energizing the pressure detector 11. The main case 43 and the storage case 44 are electrically connected by an electrical connector 45, are housed integrally with each other, and are configured so that they can be released from the active state and separated. An emergency warning switch SW4 is provided above the connecting portion 46 of the main case 43 to the lead hunter 12. As shown in FIGS. 6 and 8, this emergency alarm switch SW4 is connected to the king case 43.
A retractable contact 47 provided on the side surface of the i]vJ contact 47
The fixed contact 48 facing the contact point 47 and an intervening member 49 made of an electrically insulating material interposed between the contact points 47 and 48 may be constructed.

A handle portion 49a is formed on the intervening member 49, and when a respiratory patient pulls out the intervening member 49 by pulling the handle portion 49a, the movable contact 47 and the fixed contact 48 are electrically connected. The emergency warning switch SW4 becomes conductive. This emergency alarm switch SW4 is activated when the pressure of intake gas reaches a dangerous level as described later.
A speaker 5o housed in the ventilator 3 continuously sounds to notify the person wearing the respirator or others of an emergency situation. Further, the king case 43 is provided with an alarm sound stop switch SW3, which can forcibly cut off the sounding of the speaker 50CD except when an emergency V alarm is being issued, as will be described later. As shown in FIG. 6, a protrusion 52 that protrudes beyond the suppression operation section 51 is formed on the outer circumferential side of the pressing operation section 51 of the alarm sound stop switch SW3.
This will prevent erroneous cutting. Further, on the top surface of the king case 43, as shown in FIG. 9, there is a liquid crystal display element LCD that displays the pressure of the remaining air, indicator lights 1 to L3 whose light sources are light emitting diodes D1 to D3, and light emitting diodes. A battery voltage reduction indicator light L4 is provided with D4 as the light source, and the person wearing the respirator should operate each switch SW1 to SW4 as described below to ensure safety by observing these displayed values and lighting status. I can do it.

FIG. 10 is a bottom view of the raw case 43, FIG. 11 is a top view of the battery storage case 44, FIG. 12 is a perspective view of the vicinity of the bottom of the raw case 43, and FIG. 13 is a battery storage case. 4 is a perspective view of the vicinity of the upper surface of the booth 44. FIG. raw case 43
A pair of oaks (53, 54) are provided at the bottom of the case 43 at four corners in the longitudinal direction, and also for electrically connecting the electric circuit inside the raw case 43 and the battery E inside the battery storage booth 44. connector 55 and Schmitt circuits 74 to 76
Discrimination level adjustment knob 6 as a means for adjusting the discrimination level of
0 is provided. On the other hand, the top of the battery storage booth 44
l1] part has Pol) 56 opposite Natsuto 53.54.
．． Bolt holes 58 and 59 into which the connector 57 can be inserted are formed, and a connector socket 61 for electrically connecting to the electrical connector 55 is formed. The discrimination level adjustment knob 60 can be exposed by shifting the king case 43 and the battery storage booth 44 from each other while they are electrically connected through the electrical connector 45. The discrimination level adjustment knob 6o can be housed inside by adjusting the discrimination level and aligning the king case 43 and the 'ht pond storage cooler 44 with each other. In relation to this discrimination level adjustment knob 60, the raw case 43 has a level adjustment switch 1 and fan switch SW2.
(See FIG. 6) is provided.

By suppressing this level adjustment confirmation switch SW2, the discrimination level of the intake gas pressure selected in the discrimination level adjustment switch 16o is displayed on the LCD display screen 111. The wearer can accurately adjust the discrimination level by looking at the displayed value.

FIG. 14 is a sectional view of the electric switch SWI, and FIG.
The figure is a plan view thereof. A cover 63 provided on the horny position ME is disposed on the screw 62 in the main case 43 facing above the power switch SW1. The cover 63 can be angularly displaced about the screw 62, and when the cover 63 covers the power switch SWI, the cover 63 is prevented from being angularly displaced by a fixed wall 64 formed on the king case 43.
When the cover 63 is angularly displaced to expose the power switch SWI, the projection 65 formed on the king case 43 prevents the angular displacement.

By making it possible to submerge or expose the power switch SWI with the cover 63, it is possible to prevent the power switch SWI from accidentally being immersed or exposed while using the respirator.
There is no risk of the WI being blocked or operated, and safety is ensured.

Figures 16A and 16BI2J are electrical diagrams of a status indicator lO according to the present invention. This status display device 10 basically includes Schmitt circuits 74 to 76 as a means for level-discriminating the output from the pressure detector 11, and the air in the pressure vessel 3 in response to the outputs from the Schmitt circuits 74 to 76. A liquid crystal display confectionery LCD as a means for electrically displaying the pressure state, indicator lights 1 to L3 using light emitting diodes D1 to D3 as light sources, a speaker 50 as a sound generating means, and a battery with a predetermined voltage. It includes a battery voltage detection circuit 75 that activates a reduction indicator lamp L4 using a light emitting diode D4 as a light source when the battery voltage falls below the level.

The battery storage case 44 has an intrinsically safe explosion-proof structure, and stores, for example, a rechargeable Ni-cd battery E.

The power from the battery E is supplied to the line 1!1 from the connector socket 61 via the power switch SWI, and then is outputted to the line 12 via the stabilizing circuit 71.

Line 12 is connected to the glitch circuit of the pressure detector 11. The bridge circuit is composed of strain detection elements R1 and R2 and strain detection probes R3 and R4 for temperature compensation, which have the same configuration as the strain detection elements R1 and R2. The output from the bridge circuit is level-adjusted by a circulating resistor 72 and then led out from line 13 via an amplifier circuit 73. A detection signal corresponding to the pressure of intake gas from the amplifier circuit 73 via the line 13 is sent to the interlocking switch Sll, 51.
2 fixed contacts a and C. Interlocking switch Sll
, S12's common contacts e and f, the output from the common contact f is output from Schmitt circuits 74 and 75 as level discrimination means.
．． 76 are respectively applied to one input terminal, and voltages for determining the discrimination level from semi-fixed variable resistors 77, 78 and 79 are applied to the other input terminal (t'''6).
・, Possible! i'FC! 7"""2ga 301 power 0 discrimination i"
The level is set to be, for example, 5 kg/cm2, and the variable resistor 78 is set to, for example, 30 kg/cm2.
/cm2. Also, the variable resistance heat 79 is approximately 17% of the normal intake gas pressure in everyday life.
2, that is, 75 kg/cm'', can be set using the discrimination level adjustment knob 60.

Schmitt circuit 74, 75, 7614, pressure detector 11
The level of the pressure detection signal from the resistors 77 to 79
When the discrimination level is equal to or higher than the discrimination level set by , a low level @ symbol is derived from lines 14 to 16. When the levels of those detection signals are below the discrimination level, high level signals are derived from lines 14-16. line 1
The signal from 4 is applied to a drive circuit 81 that drives the liquid crystal display collector LCD, and is also applied to the connection point P1.

Another fake from line 4! (d is given to one input terminal of the NOR gate 82. The signal from the line 15 is inputted to the other input terminal of the NOR gate 82 via the NOT circuit 83. The signal from line 15 is E.
applied to one input terminal of the X-OR gate 84 and connected to the line I! The signal r from 6 is applied to the other input terminal. The output from this EX-OR gate 84 is the output terminal P.
3 and is derived on line 17. Further, the signal 8 from the line 16 is derived from the line 18 via the NOT circuit 85, and the signal Ji+ha from the line 15 is derived from the line 19. This line 17~l! 9 is connected in series to transistors Q1 to Q3. The output of the Schmitt circuit 76 is applied to the base of the transistor Ql via a NOT circuit 85, and the base V of the transistor Q2
The output of the Cf-1EX-OR gate 84 is applied, and the output of the Schmitt circuit 75 is applied to the base of the transistor Q3. The emitters of the transistors Q1 to Q2 are grounded, and the collectors thereof are connected to a battery voltage detection circuit 86 through a line 11 with indicator lights and light emitting diodes D1 to D3 serving as light sources 1 to L3 respectively. 'i4
i Battery voltage detection Voltage detection circuit 86 A light emitting diode D4 and a transistor Q4 as a light source of the battery voltage reduction indicator lamp L4 are connected to the line 110. 111, and the base of transistor Q4 is connected to point P4 through line 712. When the voltage of the line 11 is less than a predetermined voltage, the battery' heavy pressure detection circuit 86 detects the line l l
A low level signal is applied to line 110 and a high level signal is applied to line 110. At this time, the transistor Q4 is suspended during a period in which a speaker 50 (described later) is buzzing, and the light emitting diode D4 is forced to be turned off. When the amount of charge of the battery E decreases due to the battery voltage detection circuit 86, the battery voltage reduction indicator L4 starts blinking, and as the decrease progresses, the blinking interval becomes faster as will be described later. will remain lit to notify you that charging is required. The timing to start blinking may be set so that it starts blinking when the amount of charge has decreased to the level required for frequent use (about 30 minutes), or even if it starts blinking while using the toilet. It continues to operate at 1K without any problems in use.

Referring to FIG. 16B, the fixed contact X of the sound stop switch SW3 is connected to the high level terminal +V1, and the fixed contact Y is grounded. The output from the common contact Z of the sound stop switch SW3 is the line l! 13 to the delay circuit 87. In the delay circuit 87, the line j13
The output from diode D is charged to capacitor C via resistor R5, and from capacitor C1l to resistors R5 and R
It is discharged by 6. The output from delay circuit 87 is applied from line 114 to tallock input terminal CP of clip 70 tube F1. An input terminal JK of the flip-flop F1 is supplied with the output of an AND gate 89 connected to the line j13 and the connection point P3, respectively.

On the other hand, the output from line 113 is applied to one input terminal of AND gate 88, and the output from connection point P2 (see FIG. 16A) is applied to the other input terminal of AND gate 88. AND gate 88 output buffer flip 70
It is given to the input terminal J of the knob F2, and the tarok input terminal C
PK is given the output from line /14. The input terminals RKfl of the flip 70 tubes Fl and F2 are provided with the output of an OR gate 90, one input terminal of which is connected to the connection point P1 and the other input terminal of which is grounded. In addition, the input terminals of the clips 70, Fl and F2, are each grounded. The output from the reset output terminals of the 7-rip 70 tubes Fl and F2 is given to one input terminal of an AND gate 91.92, and the other input terminal of the AND gate 91.92 is connected to the connection point P2°F3. . The output of AND gate 91 is applied to one input terminal of NOR gate 93, and the output from NOT circuit 94 is applied to the other input terminal. NOT circuit 940 input side is emergency alarm switch S
It is connected to the high level output terminal +V2Vc via W4. The emergency alarm switch SW4 is made conductive by pulling out the handle portion 49a of the intervening member 49 as described above, and this high level signal is applied to one input terminal of the NOR gate 93 via the NOT circuit 94. The output of NOR gate 93 is sent to AND gate 9 via NOR gate 95.
6 is applied to one input terminal.

y a 79M@tR%f7>**“°”・6ゝ I
It is applied to one input terminal of D gate 97, and the other input terminal of AND gate 97 is connected to connection point P1. A
The output of ND gate 97 is applied via line 115 to one input terminal of AND gate 99. The output pulse at this time is %1. -7 Shown in Figure (1). The period W1 of this pulse is 0.5 seconds, and the period W2 is 4 to 5 seconds. The output pulse shown in FIG. 17(2) is applied from the oscillation circuit 100 to the other input terminal of the AND gates 96 and 99.

The output pulse from the oscillation circuit 101 is passed through the AND gate 10
The output pulse from the AND gate 102 has a duration W1 and a rest period W21J of, for example, 0.5 seconds, as shown in FIG. 17(3). The output from AND gate 102 is output from AND gate 92
ANDNO gate 93 is output along with the output of the mask. A
Outputs from the ND gates 96, 99, and 103 are applied to an OR gate 104, and outputs from the OR gate 104 are applied to a speaker 50 via an amplifier circuit 107.

Also, the output of ANDG) 96, 99, 103 is ANDN
It is applied to the connection point P4 from the NOT circuit 106 through the O gate 95.

VJ's creations for the zero-way seat display device are as shown in Table 1 and @Table 2.

(The following is a blank space) In the first operating state, the power switch SWI is cut off, so that no sound is generated from the speaker 50, and each of the indicator lights 1 to L4 is turned off.

In the second young state, press the power switch SWI to one side,
At this time, the blocking valve 4 is closed. In this state, the strain detection elements R1 and R2 are detecting atmospheric pressure, so the output of the Schmitt circuit 75 is at a high level, the transistor Q3 is conductive, and the light emitting diode D3 remains lit in red. The output of the Schmitt circuit 76 is at a high level, and its neutral voltage is inverted by the NOT circuit 85, cutting off the transistor Q1. At this time, contact kA
P3 is at low level, cutting off transistor Q2,
Light emitting diodes DI and D2tfi are off. The output of the Schmitt circuit 74 is connected to the AND gate 9 from the connection point P1.
7 is input. A pulse from oscillator circuit 98 having a duration W1 of about 0.5 seconds with a rest period W2 of 4-5 seconds is also applied to AND gate 97. A 3KHz signal is applied to the AND gate 99, which lasts for 0.5 seconds as described above, and a 3KHz signal is applied to the OR gate 104 at intervals of 4 to 5 seconds. is applied to the speaker 50, and intermittent sound is heard. This serves as a warning that the RFI blocking valve 4 has been forgotten to be enclosed, and is useful for improving safety.

This intermittent ringing of the speaker 50 cannot be stopped.

In the third pre-made bag, the blocking valve 4 is opened. As a result, the pressure in the pressure vessel 3 has a normal pressure of about 150 kg/cm''. Therefore, the low level output of the Schmitt circuit 76 is made high level by the NOT circuit 85, and the transistor Ql is turned on. , the green light emitting diode D1 lights up.

This allows the use of a respirator. At this time, the speaker 105F'i is at rest.

When the compressed air pressure reaches a range of 30 to 75 kg/cm due to the use of the respiratory apparatus 1 in the @4V operating state, the connection point P3 becomes high level, which causes the transistor Q2 to conduct and the yellow Light emitting diode D2 lights up. When the power is turned on, the connection point P1 is at a high level, and the reset output terminals of the seven lip-flop F2 are at a high level. Therefore A
A high level signal from ND gate 92 is applied to AND gate 103. Signals from the oscillation ports glF100 and 101 are applied to the AND gate 102, and a 3KHz signal is applied from the OR gate 104 at 0.5 second intervals, causing the speaker 50 to vibrate intermittently. In this ringing state, the common contact Z of the alarm sound stop switch SW3 is switched from the individual contact Y to the individual contact XK. This high level signal is applied to AND gate 89 from line /13. At this time, the connection point P3 is at a high level, so the high level signal of the AND gate 89 is input to the input terminal J of the flip 70 knob F2. Further, the high level signal on line /13 charges the capacitor C1l from the resistor R5 via the diode D of the delay circuit 87. The charging voltage is derived from line 114 and after a delay time clock input terminal CP of flip-flop F2.
given to.

The signal at the input terminal J when applied to the tarlock input terminal CP is inverted and output to the reset output terminal of the 7-lip 70-tube F2. Thus OR gate 90
, the output from AND gate 103 becomes low level,
A low level signal is applied to the speaker 50, and the speaker 50 is put to rest.

7 Lip-flop Fl, F2 are the kings of pressure vessels 3 1
It will not be reset unless the force reaches its initial state, that is, about atmospheric pressure, so once the 7 flip-flops Fl,
After F2 is reset by operating the alarm sound stop switch SW3, the speaker 50 is stopped and becomes fcl.

In the fifth display, the pressure of the pressure vessel 3 is 5 to 30 kg/
The range is cm2. Therefore, the output of the Schmitt circuit 75 becomes high level, and the light emitting diode D3 remains lit in red. The output of the connection point P2 becomes high level and is applied to the AND gate 91. The flip 70 knob F1 is reset when the power is turned on, and the reset output terminal Q is at a high level. At this time, the emergency warning switch SW4 is not operated and is shut off. Therefore, a high level signal is derived from NOT circuit 94. In this way, the output of the NOR gate 93 is at a low level, and is set at a high level by the NOT circuit 95. Therefore, the same wave number signal of 3 KHz from the oscillation circuit 100 is applied from the AND gate 96 to the OR gate 104, and the speaker 50 continuously outputs I! Move by 1%.

In order to cancel the ringing state of the speaker 50, when the common contact Z of the alarm sound stop switch SW3 is switched to the individual contact X and conductive, the high level signal is transmitted from the line 113 to the A
The signal is applied to ND gate 88. A high level connection point P2 is applied to the AND gate 8B. Therefore A
The high level signal from ND gate 88 is applied to flip 7.
It is input to the input terminal J of the 0 knob F1. Line I! 13
The high level signal is delayed by the delay circuit 87 and input to the clock input terminal CP of the flip 70 tube F1. In this way, the flip-flop Fl inverts the high level signal at the input terminal J when the tarlock input terminal CP is applied and outputs it to the reset output terminal circuit, thereby setting the reset output terminals to the low level. Thus AND
The output from the gate 91 becomes low level, and accordingly the NO
The output of R gate 93 becomes high level, NOT@%9
The output of the AND gate 96 becomes low level, and the output of the AND gate 96 becomes low level, and the sound of the speaker 50 stops.

In the alarm sound stop switch SW3, the common contact 2 is conductive to the individual contact XK only during the suppression period, and when the suppression operation is stopped, the common contact Z is switched back to conduct exclusively to the individual contact YK. In this manner, the respiratory apparatus can be used in the fifth display state until the pressure in the pressure vessel 3 reaches approximately 5 kg/cm''.

In the sixth display state, the pressure in the pressure vessel 3 is further reduced to less than 5 kg/cm2. As a result, the output of the Schmitt circuit 75 remains at a high level, and the red light emitting diode D3I/i remains lit.

Therefore, since the connection point P1 becomes high level, the AND gate 97 is given a pulse from the oscillator circuit 98 that lasts for 0.5 seconds and pauses for 4 to 5 seconds, and the signal is given from the line 105 to the AND gate 99. . In this way, the oscillation circuit 1
The signal from 00 to 3KHz is output from AND gate 99 to O.
It is applied to the speaker 5o via the R gate 104, and
The speaker 5o sounds at intervals of 5 seconds. This 1. The alarm sound cannot be stopped even by arbitrarily operating the alarm sound stop switch SW3, and as a result, the alarm sound cannot be stopped even if the alarm sound stop switch SW3 is operated.
It is possible to prevent forgetting to cut.

When using a respirator, if the person wearing the respirator falls into a dangerous state, the intervening member 49 of the emergency alarm switch SW4 is removed, and the emergency alarm switch SW4 is activated.
conducts. Therefore, N.

The output of the T circuit 94 becomes low level. Therefore NO
The output of R gate 93 is forced high and N0TI
! l! The output of the l path 95 becomes high level.

Therefore, the output from the oscillation circuit 100 is the AND gate 9
6 through the OR gate 104, and the speaker 50
becomes a high level continuously, and the speaker 50 continues to sound continuously. In this way, in the event of darkness, the speaker 5o becomes a sounding box, making it possible to search for a person wearing a respirator who is in an emergency situation, and even if it is not an emergency situation, the emergency situation can be detected by sound. Other people can be informed, and the safety of those who have fallen into an emergency situation can be ensured. !
When the power is turned on, when the power supply voltage drops, the Vi battery voltage detection circuit 86 sets the line /11 to low level.
Line 1105 - High level toshi, f
B is repeatedly repeated. When the speaker 50 is not being sounded, the OR gate 105 has a low level K, so its output is inverted by the NOT circuit 106 and a high level signal is applied to the transistor Q4, making it conductive.

In this manner, when the voltage of the battery E decreases while the speaker 5o is not being sounded, the light emitting diode D4 starts blinking. In this way, the drop in the voltage of battery E can be known.

As the battery charge level decreases, the blinking interval becomes faster.
Eventually it will keep flashing and you will know it needs charging. The timing to start blinking is determined when the charging amount has decreased to the level required for approximately one use of the respirator, for example, approximately 30 minutes. Therefore, the light emitting diode D4 starts blinking during use, and the respiratory apparatus can be used normally without any problems. It is necessary to charge battery E after use.

:x, h501i1WtWJ, the power consumption by the sonos beaker 50 is large, and therefore there is a possibility that the voltage of the battery may drop during the ringing. If the light emitting diode D4 lights up when the power supply voltage drops while the speaker 50 is ringing, it may be mistakenly detected that the voltage of the battery E is exhausted. To avoid this, the transistor Q4 is cut off while the speaker 50 is sounding, forcing the light emitting diode D4 to be turned off.

When the switch Sll, 512 is operated, the common contacts e, f
is an individual contact, cK conducts. As a result, the inverting inputs of the Schmitt circuits 74, 75, and 76 are at the same level as the line 12, and their outputs are equivalent to the normal pressure in the pressure vessel 3.

When the recognition switch SW2 is not operated for level adjustment 6, the common contacts e and f are electrically connected to the fixed contacts a and (,
A signal representing the pressure in the pressure vessel 3 from the line 13 is applied to a drive circuit 81, and the actual pressure in the pressure vessel 3 is displayed, for example, in a three-digit numerical value by a liquid crystal display (LCD). Until the level &lk confirmation switch SW2 is pressed, the common contacts e and f have the ability to conduct to the fixed contacts d and d. This level adjustment = g switch SW2
It is possible to adjust the discrimination level of the Schmitt circuit 76 by preparing the variable resistors 70 and 79 up to 1 in the state in which they are being suppressed. This discrimination level is set so that the liquid crystal display element L is set to, for example, half of the normal pressure of the pressure vessel 3, for example 150 kg/cm'', that is, 75 kg/cm''.
Settings can be made while viewing the CD. While using the respirator in this way, when the yellow diode D2 began to emit light at the fourth indication, the operator of the respirator should know that the intake air in the pressure vessel 3 had reached about half of its capacity. This means that you must be prepared to return from a dangerous area. Semi-constant resistance 77H
The setting is such that the pressure in the pressure vessel 3 corresponds to, for example, 5 kg/cm'' and a good signal is derived.
When it is detected that the value is less than the value, the numerical value displayed by the liquid crystal display element LCD of the drive circuit 81 is set to zero. In this way, the liquid crystal display element LCD is prevented from displaying small pressures with slight errors, which helps to provide a sense of security to the user.

The invention relates not only to open respirators, but also to recirculating respirators, i.e. respirators configured to normalize expiration and to supplement this normalized gas with air from a pressure vessel. I can do it. This status display device has an intrinsically safe explosion-proof structure and can be designed so that it can be used even in explosion-proof areas.

Effects As described above, according to the present invention, a device that can electrically display the pressure of exhaled gas can be realized.

[Brief explanation of drawings]

FIG. 1 is a perspective view of one embodiment of the present invention, and FIG. 2 is a respiratory system 1.
FIG. 3 is a perspective view of another embodiment of the present invention, FIG. 4 is a sectional view of the pressure detector 11, and FIG.
The figure is a perspective view of the vicinity of the pressure sensing cylinder 19. 6 is a front view of the casing 14, FIG. 7 is a right side view thereof, FIG. 8 is a left side view thereof, FIG. 9 is a plan view thereof, FIG. 10 is a bottom ItI view of the main case 43, and FIG. The figure is a top view of the storage case 44, FIG. 12 is a perspective view of the main case 43, FIG. 13 is a perspective view of the storage case 44, and FIG. 14 is a power switch SWI.
15 is a plan view thereof, FIGS. 16A and 16B are electrical circuit diagrams of an embodiment of the present invention, and FIG.
FIG. 1 is a diagram showing output pulses from the ANDG 1-97, 102, etc. 1...lPl' suction device, 11...pressure detector, 43.
...Main case, 44...Storage case, 74-76...
・Schmitt circuit, SWl...power switch, SW3
...Alarm sound stop switch, SW4...Emergency alarm switch, D1-D4...Light-emitting diode agent Patent attorney Kei Nishi Some drawings (11 pieces included) Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 13 Figure 14 Figure 15 Figure 17 Procedure amendment 8 (method) % formula % 2. Name of the invention Respiratory system Status display device 3, relationship with the case of the person making the amendment Applicant address name: Kawaju Disaster Prevention Industry Co., Ltd. Representative 4, agent address: 1-13838 Nishihonmachi, Nishi-ku, Osaka City, Shinkobu Building Country [location EX 0525-5985 INTAPT]
J International FAX GI[[&Gn (06>538-
02476, Amendment subject specification and drawing 7, Amendment contents specification and drawings (no change in content). that's all

Claims (10)

[Claims] (1) A pressure detector for detecting the pressure of the intake gas in the pressure vessel; a means for level-discriminating the output from the pressure detector; 1. A respiratory status display device comprising: means for displaying a respiratory condition. (2) The pressure detector is provided with a restriction that faces an air guide pipe that guides intake gas from the pressure vessel, and the intake gas is supplied through the restriction. respiratory status display system. (3) A main case housing the level discrimination means and the electrical display means and a housing case housing a battery for energizing the pressure detector are electrically connected by an electrical connector. The respiratory organ status display device according to claim 1, characterized in that the device is attached integrally with each other and can be separated by releasing the attached state. (4) The main case has a manually operated operation section and is provided with a power switch for supplying power from the battery to the level discrimination means, the electric display means and the pressure detector, and the power switch 4. The respiratory organ status display device according to claim 3, further comprising a cover that can open and close the operating section of the power switch. (5) The respiratory organ status display device according to claim 1, wherein the electrical display means includes means for generating sound in response to the pressure of the intake gas in the pressure vessel. . (6) The switching mode is changed by manual operation of the power switch, thereby activating the sound generating means and continuing to generate sound. The respiratory status display device according to item 4 or 5. (7) The electrical connector allows the main case and the storage case to be mutually changed while they are electrically connected, and the level discrimination means is configured to determine whether the pressure of the intake gas in the pressure vessel is predetermined. A manual adjustment means is provided for adjusting the discrimination level to a discrimination level corresponding to the value, and the manual adjustment means allows the discrimination level to be adjusted while the main case and the storage case are mutually changed, and the main case and the storage case are 4. The respiratory organ status display device according to claim 1, wherein the manual adjustment means is covered by the storage case when the case is attached. (8) A patent characterized in that the electrical display means has a plurality of indicator lights, and these indicator lights are selectively activated after the power switch is turned on in response to the pressure in the pressure vessel. A respiratory organ status display device according to claim 1. (9) The respiratory organ status display device according to claim 8, wherein the indicator light emits light. (10) The main case C is provided with a battery voltage detection circuit that detects the voltage of the battery, and this battery voltage detection circuit is configured to:
Claim 1, characterized in that a battery voltage reduction indicator light is activated when the battery voltage falls below a predetermined level, and the battery voltage reduction indicator lamp is disabled when the sound generating means is activated. The respiratory status display device according to item 3 or 5.