JPH0728000U - Respiratory pressure reducing valve - Google Patents

Abstract

(57) [Summary] [Problem] To provide a pressure reducing valve for a respiratory apparatus, which prevents waste of respiratory air and enables long-time underwater swimming. The breathing apparatus pressure reducing valve 11 of the present invention includes a plurality of breathing air passages 41a, 41b having different hole diameters in its supply portion.
41c and communication means 53, 55 that selectively communicate with one of these breathing air passages, and when the breathing amount is adjusted, the breathing air passages 41a, 41b, 41c having different hole diameters are provided.
An arbitrary breathing air passage is selected from among the above, and the communicating means 53, 55 are made to communicate with this breathing air passage to set various amounts of the breathing air supplied. Therefore, the amount of respiratory air supplied can be adjusted according to the type of user and the situation of use.
It prevents wasteful breathing and makes it possible to swim in the water for a longer time.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a pressure reducing valve for a breathing apparatus used in water, and more particularly to a pressure reducing valve for a breathing apparatus to which breath air is supplied from a high pressure cylinder.

[0002]

[Prior art]

 Respiratory devices equipped with high-pressure cylinders generally have an open-type respirator that discharges all exhaled breath air into water, and removes carbon dioxide from the exhaled breath air and reuses part of it as exhaled breath. There is a semi-closed breathing apparatus.

[0003] The open-type breathing apparatus is usually configured such that breathing air is supplied from a high-pressure cylinder according to the breathing volume, but in the semi-closed breathing apparatus, a breathing circuit including a canister that adsorbs carbon dioxide gas. Respiratory air is quantitatively supplied from the high-pressure cylinder to the high-pressure cylinder, and the high-pressure cylinder supplies a fixed amount into the breathing circuit via the pressure reducing valve.

[0004]

[Problems to be solved by the device]

 However, in this type of semi-closed breathing apparatus, the amount of breathing air consumed varies depending on the physical strength of the user, such as an adult or child, male or female, or the state of use such as swimming or stationary. ing. In addition, there is a need to reduce the breathing volume in such a case because the fish may escape due to the bubbling sound caused by breathing air, such as when observing underwater. Since it is necessary to set the amount of respiratory air supplied in consideration of this, the amount of respiratory air supplied cannot be reduced.

Further, there is a problem that if uniform breathing air is supplied, breathing will be wasted.

Further, there is a demand for a breathing apparatus that allows a single high-pressure cylinder to swim in water for a longer time.

[0007] Therefore, an object of the present invention is to provide a pressure reducing valve for a breathing apparatus, which prevents waste of respiratory air and enables a long-time underwater swimming.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a high-pressure inlet for introducing high-pressure gas from a high-pressure cylinder, a decompression unit for reducing the pressure of the gas supplied from the high-pressure inlet, and a supply of decompressed breathing air. In the pressure reducing valve for a respiratory apparatus, the supply unit includes a plurality of respiratory air passages having different hole diameters, and a communication unit that selectively communicates with one of the respiratory air passages. The feature is that the amount of respiratory air supplied from the department is variable.

[0009]

[Action]

 In the pressure reducing valve for a breathing apparatus according to the present invention, the respiratory air introduced from the high-pressure cylinder is introduced from the high-pressure inlet to the decompression unit, where it is depressurized to a predetermined pressure, and then the respiratory air is supplied from the supply unit. When adjusting the respiratory volume, an arbitrary respiratory air passage is selected from among the respiratory air passages having different hole diameters, and the communicating means is made to communicate with this respiratory air passage. As a result, since the hole diameter of the respiratory air passage changes, the amount of respiratory air supplied can be set variously. It should be noted that the change in the supply amount of breathing air is not limited to before and after the use of the breathing apparatus, and may be during use.

As described above, since the amount of respiratory air supplied can be changed, the amount of respiratory air supplied can be adjusted according to the type of user and the situation of use, etc. It enables long-term underwater swimming.

[0011]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 6, a semi-closed breathing apparatus 1 according to an embodiment of the present invention includes a breathing bag 3, a canister (carbon dioxide adsorbing device) 5, a breathing gas cylinder (high pressure cylinder) 7 and a mouse space. In the case of exhaust, the respiratory air discharged from the mouthpiece 9 is supplied to the breathing bag 3 through the exhaust pipe 4, and in the case of inhalation, the respiratory air in the breathing circuit is It is supplied from the breathing bag 3 to the mouthpiece 9 through the canister 5 and the intake pipe 10. Further, the canister 5 is supplied with breathing air quantitatively from the breathing gas cylinder 7 via the pipe 13 via the breathing apparatus pressure reducing valve 11.

As shown in FIG. 1, the pressure reducing valve 11 for the breathing apparatus includes a high pressure inlet portion 15 to which the high pressure cylinder 7 is connected, a pressure reducing portion 17 for reducing the pressure of the gas supplied from the high pressure inlet portion 15, It is composed of a supply unit 19 for supplying reduced-pressure respiratory air.

A high-pressure passage 21 is formed in the main body 22 of the high-pressure inlet portion 15, and the high-pressure passage 21 communicates with the valve chamber 23. The valve chamber 23 is provided with a cylindrical valve body 27 and a valve seat 29, and high-pressure breathing air passes through the hollow 27 a of the valve body 27 from the gap between the valve body 27 and the valve seat 29. It moves to the primary decompression chamber 28, where the primary decompression is performed.

A spring 30 is arranged at the base end of the valve body 27, and biases the valve body 27 toward the valve seat 29 side with a predetermined pressure.

The valve seat 29 is movable at the contact position with the valve body 27 by the pressure adjusting member 26, and the pressure of the respiratory air flowing from the respiratory gas cylinder 7 is adjusted.

A supply chamber 31 is formed in the decompression unit 17, and the supply chamber 31 is in communication with the primary decompression chamber 28 via the communication member 33. The supply chamber 31 is provided with a spring 35 and a support body 37 that supports the spring 35, and urges a communication plate 39, which will be described later, toward the supply unit 19 side.

The supply unit 19 includes three breathing air passages 41a, 41b, 41c having different hole diameters in its main body 40, and a communication plate serving as a communicating means selectively communicating with one of these breathing air passages. 39, and the respiratory air introduced from any of the respiratory air passages 41a, 41b, 41c is introduced into the supply port 45 via the secondary decompression chamber 43. The breathing air supply port 45 is connected to the tube 13 of the breathing circuit of the semi-closed breathing apparatus, and constantly supplies a fixed amount of breathing gas.

The three respiratory air passages 41a, 41b, 41c are formed in the main body 40 at an angle of about 120 degrees, and have different hole diameters, for example, the respiratory air passages 41a have a diameter of 0. The hole diameter is 1 mm, the respiratory air passage 41b is 0.2 mm, and the respiratory air passage 41c is 0.3 mm. Thereby, the respiratory air passage 41a can supply 6 (L / MIN), the respiratory air passage 41b can supply 8 (L / MIN), and the respiratory air passage 41c can supply 10 (L / MIN).

Each of the breathing air passages 41 a, 41 b, 41 c is formed with a taper 42 around the opening thereof to widen the allowable range of communication with the holes 53, 55 formed in the communication plate 39. .

The base end of the communication plate 39 is connected to a knob 47 that is manually rotated, and is rotated together with the rotation of the knob 47. A ball 51 pressed by a spring 49 is housed on the sliding surface side of the knob 47 in the main body 40 of the supply unit 19, and a recess (not shown) formed in the sliding surface of the knob 47. The ball 51 is press-fitted to the knob to give a click feeling when the knob is rotated.

As shown in FIG. 2, the communication plate 39 is formed in a disc shape, and a circular hole 53 and a long hole 55 are formed in the front surface thereof. When the circular hole 53 or the long hole 55 communicates with any of the breathing passages 41a, 41b, 41c, the breathing air in the supply chamber 31 is depressurized and supplied to the secondary depressurizing chamber 43. The circular hole 53 and the long hole 55 are formed in front of each other with an angle of about 180 degrees, but the long hole 55 has an angle spread of an angle Θ (about 60 degrees in this embodiment). There is.

A regulation member 57 that regulates the rotation of the communication plate 39 is provided in the long hole 55 to regulate the rotation range.

Next, the operation of this embodiment will be described.

As shown in FIG. 6, in the circuit of the semi-closed breathing apparatus 1, air (breathing air) is quantitatively supplied from the breathing gas cylinder 7 to the pipe 25 through the breathing apparatus pressure reducing valve 11.

The supply amount of the respiratory air supplied from the respiratory gas cylinder 7 can be changed by the wearer before or during swimming, if necessary.

The supply amount of respiratory air is adjusted by the diver manually rotating the knob 47. For example, as shown in FIG. 2, when the supply amount is a supply amount for women (hole diameter 0. In the case of 2 mm), the communication plate 39 is rotated in the direction of the arrow R and set at the position where it abuts against the regulating member 57. In this case, one end of the long hole 55 coincides with the breathing air passage 41a, and the other breathing air passages 41b and 41c are closed by the communication plate 39, so that breathing air is supplied only from the breathing air passage 41a.

Next, when changing the set supply amount of respiratory air, for example, when it is desired to reduce the foaming noise due to the air for underwater observation, or when the diver hardly swims, the respiratory air supplied is lost. If not, or if the wearer is also a child. In this case, as shown in FIG. 4 from the position shown in FIG. 2, the communication plate 39 is rotated in the S 2 direction by the knob 47 so that the circular hole 53 is aligned with the respiratory air passage 41b.

In this case, even if the circular hole 53 does not completely coincide with the respiratory air passage 41b, if the circular hole 53 is located within the range of the taper 52, the circular hole 53 can communicate with each other. Therefore, even when the long hole 55 separates from the respiratory air passage 41b, respiratory air is supplied from the respiratory air passage 41a until it is completely separated from the taper 52 of the respiratory air passage 41a. In addition, the circular hole 53 communicates with the taper 52 of the respiratory passage 41b at the same time as it separates from the taper 52 of the respiratory passage 41a. That is, regardless of the position of the communication plate 39, the breathing air is supplied from any of the breathing air passages, so that the supply is not temporarily interrupted when the supply amount is switched. Therefore, according to this embodiment, it is possible to safely switch the supply amount in water.

Further, as shown in FIG. 5, when the respiratory air passage 41c is set, for example, when a male adult or the like consumes much air due to intense swimming, the restricting member 57 is moved in the direction of arrow S. The communication plate 39 is rotated until it abuts, and the other end of the elongated hole 55 is aligned with the respiratory air passage 41c. Even in this case, the supply is not temporarily interrupted when the supply amount is switched.

The present invention is not limited to the above-described embodiments, but can be variously modified without departing from the gist of the present invention.

For example, the same effect can be obtained even if the number of breathing air passages is not limited to three and two or four are provided.

Further, the communication means is not limited to forming the circular hole 53 and the long hole 55 in the disk-shaped communication plate 39, and may be configured to switch the passage by a three-way valve or the like.

[0034]

[Effect of device]

 When adjusting the supply amount, the pressure reducing valve for a respiratory device of the present invention selects an arbitrary respiratory air passage from among the respiratory air passages having different pore diameters, and connects the communicating means to this respiratory air passage. Since the breathing amount is adjusted, the hole diameter of the breathing air passage changes, so that the amount of breathing air supplied can be set in various ways.

As described above, since the amount of respiratory air supplied can be changed, the amount of respiratory air supplied can be adjusted according to the type of user, the situation of use, etc., so that waste of respiratory air can be prevented and more It enables long-term underwater swimming.

[Brief description of drawings]

1 is a cross-sectional view of a pressure reducing valve for a breathing apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view showing the relationship between the communication plate shown in FIG. 1 and a supply passage.

3 is a cross-sectional view showing the relationship between the communication plate shown in FIG. 2 and a supply passage.

FIG. 4 is a plan view explaining the operation of the communication plate shown in FIG.

FIG. 5 is a plan view for explaining the operation of the communication plate shown in FIG.

FIG. 6 is a circuit diagram of a semi-closed breathing apparatus according to an embodiment of the present invention.

[Explanation of symbols]

 1 Semi-closed breathing apparatus 7 Breathing gas cylinder (high pressure cylinder) 11 Pressure reducing valve for breathing apparatus 15 High pressure inlet section 19 Supply section 41a, 41b, 41c Breathing air passage 53 Circular hole (communication means) 55 Long hole (communication means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kyoichi Fujimori Inventor, 3-13-26, Yasuyukicho, Higashimatsuyama City, Saitama Prefecture XXEL Higashi-Matsuyama Factory (72) Inventor: Hitoshi Sugimoto 3--13, Yumimachi, Higashimatsuyama City, Saitama Prefecture No. 26 XXEL Higashi Matsuyama Factory (72) Inventor Akihiko Hachinami 3-chome, Yasumumicho Higashimatsuyama, Saitama Prefecture No. 26 No. 26 XXEL Higashi Matsuyama Factory (72) Inventor Yoshihisa Fujisawa Konan-cho, Oza-gun, Saitama Prefecture 39 Toyohara, Chiyoji Inside the XXEL Gangnam factory

Claims (1)

[Scope of utility model registration request] 1. A breathing apparatus comprising: a high-pressure inlet for introducing high-pressure gas from a high-pressure cylinder; a decompression unit for reducing the pressure of the gas supplied from the high-pressure inlet; In the pressure reducing valve for a device, the supply unit includes a plurality of respiratory air passages having different hole diameters, and a communication unit that selectively communicates with one of these respiratory air passages, and the respiratory air supplied from the supply unit is provided. A variable pressure valve for a respiratory device, characterized in that the supply amount of is variable.