GB2358235A

GB2358235A - Gas regulator

Info

Publication number: GB2358235A
Application number: GB0000877A
Authority: GB
Inventors: Fong Chi Lin
Original assignee: TAIWAN PAO AN IND Co Ltd
Current assignee: TAIWAN PAO AN IND Co Ltd
Priority date: 2000-01-14
Filing date: 2000-01-14
Publication date: 2001-07-18
Also published as: GB0000877D0

Abstract

A gas regulator for a gas supply to a furnace comprises a body defining a gas receiving space, an input channel 123 supplying gas through an excessive flow protection valve 2 including a rolling ball 21, an outlet 124 leading to an adjustable safety control valve 3 and an output channel 131 and a pressure regulation device 5 within the gas receiving space. The pressure regulation device 5 comprises a lever having one end supported on a hanging rod depending from a diaphragm 41 and another end for closing the outlet 124 when the when the rod is raised by pressure within the receiving space acting on the diaphragm 41 against a biassing spring 4'. The diaphragm 41 is preferably formed from canvas and synthetic rubber and a filter may be provided in a channel leading from the outlet 124.

Description

2358235 GAS REGULATOR

FIELD OF THE INVENTION

The present invention relates to a gas regulator, and especially to an improved structure about a gas regulator, before gas inputs a furnace, it flows through an over current protecting device, a safety relief device, and a pressure relief device for regulation.

BACKGROUND OF THE INVENTION

As shown in Fig. 1, a prior art gas regulator is illustrated. In the gas regulator 1 a, an upper case 11 a encloses the lower end of the body 12a. No safety and positioning structure is added between the upper case 11a and the body 12a.

Therefore, a overlarge pressure from riveting engagement occurs so that the case is broken or a over small pressure from riveting engagement occurs to cause gas to vent out. Besides, no safety and positioning device is installed at the switch controller 13a, it is possible to be rotated by a children.

Moreover, the flow of the gas can not be known exactly, and therefore, the regulation is not well controlled so as to induce a danger accident. The reliability, economics and use of the prior art are not a preferred design.

1 SUMMARY OF THE INVENTION

Accord ing ly, the present invention provides a gas 5 regulator, wherein before gas flow into the furnace for ignition, it must flow through an over current protecting device. By the diaphragm set, an elastic fatigue is prevented, and tightness of sealing is improved. Through the pressure regulation device, by one end of a lever to obstruct the via hole, as the gas flows into the body, the diaphragm set will slightly incline downwards through the flow of gas and the weight of a cover plate so that the hanging end of the lever means has one end acting a downward force, while another end will rise upwards. Then, gas flows into the opening channel through the via hole. By the regulating of the safety control valve, gas can flow into the gas output channel successfully.

The various objects and advantages of the present invention will be more readily understood from the following detailed description when read in conjunction with the appended drawing.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 shows a prior art gas regulator.

Fig. 2 is an exploded perspective view for the arrangement of the present invention.

2 Fig. 3 is a schematic perspective view showing the assembly of the present invention.

Fig. 4 is a schematic view showing the action of the excessive flow protection valve of the present invention.

Fig. 5 is a schematic view showing the action of the pressure regulation device of the present invention.

Fig. 6 is a schematic vifew showing the operation of the safety control valve of the present invention.

Fig. 77 is a schematic view shoWino, the opening of the safety controlvalve of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED

EMBODIMENTS With reference to Figs. 2 to 7, the gas regulator of the present invention is illustrated. The gas regulator according to the present invention includes a body 1, an excessive flow protection valve 2, a safety control valve 3, a diaphragm set 4, a pressure regulation device 5 and an upper cover 6.

The body 1 may be a funnel casing 11 spaced into an upper portion and a lower portion. The upper portion 12 is a hollow structure and is formed as a gas receiving space 12 which is communicated to the gas output channel 131 installed at the lower portion 13through avia hole 124and an opening channel 125. One end of the opening channel 125 is formed as a switch receiving space 1251. A filtering net 126 3 can be added to the opening channel 125 for filtering impurities and preventing the obstruction of furnace opening. Moreover, one side of the upper portion 12 is installed with a gas input channel 123.

The excessive flow protection valve 2 is installed on the gas input channel 123. A rolling ball device serves to control the channel, as the impact of the gas is greater than a normal value, the input will be sealed.

The safety control valve 3 is firmly secured to the switch receiving space 1251 inthe body 1.Athreestage positioning 1251 is installed for selecting to be closed, opened, half opened. In using, the user moves the tongue portion 31 by a thumb outwards and then rotates the tongue portion for positioning to a desired position. Thus, the gas flow can be adjusted as desired to prevent to be opened by mistake.

The diaphragm set 4 serves to cover the body 1, which is formed by a round diaphragm 41 with a base cloth 42 in order to prevent elastic fatigue and increase the tightness therebetween. The round diaphragm 41 is manufactured by a synthetic rubber and the base cloth 42 is made of canvas. A hanging rod 43 is installed below the round diaphragm 41.

The pressure regulation device 5 is installed within the body 12. One end of a lever 51 obstructs the via hole 124, while another end thereof is installed on the hanging rod 43.

The upper cover is tightly sealed at the upper end of the 4 body 1. The body encloses the upper cover 6 by rivets for preventing a large pressure to cause the diaphragm 41 to break and a too small riveting pressure so to vent gas. A notch 44 can be installed at the edge of the upper cover 6 and the diaphragm set 4 so as to be combined with the positioning convex point 14 to prevent from rotation. A coil spring 4' is located between the cover 6 and the diaphragm assembly 4.

The present invention has the following advantages:

1. Before gas flows into the furnace for ignition, it must flow through an excessive flow protection valve.

2. By the diaphragm set, an elastic fatigue is prevented, and tightness of sealing is improved.

3. T h ro u g h t h e p r e s s. u re regulation device, by one end of a lever to obstruct the via hole, as the gas flows into the body, the diaphragm set will slightly incline downwards through the flow of gas and the weight of a cover plate so that the hanging end of the lever means has one end acting a downward force, while another end will rise upwards. Then, gas flows into the opening channel through the via hole.

4. By the regulating of the safety control valve, gas can flow into the gas output channel successfully.

Although the present invention has been described with reference to the preferred embodiments, it will be understood that the invention is not limited to the details described thereof. Various substitutions and modifications have been suggested in the foregoing description, and others will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the invention as defined in the appended 5 claims.

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Claims

What is claimed is:

1 A gas regulator comprising:

a body having an upper portion being a hollow structure and having a gas receiving space, said body being connected to a gas output channel at a lower portion through a via hole and an opening channel, moreover, an end of the opening channel being formed with a switch receiving space, and a side of said upper portion having a gas input channel; an excessive flow protection valve installed at said gas input channel; a safety control valve firmly secured to said switch receiving space of said body, a tongue being installed thereon; by moving said tongue and then rotating, it can be positioned selectably, therefore, gas can be regulated as desired; a diaphragm set for covering said upper portion of said body, and a hanging rod being installed at the center of said diaphragm set; a pressure regulation device installed in said upper portion of said body, in said device, one end of a lever serving to obstruct said via hole, while another end thereof being hung from said hanging rod; and an upper cover tightly sealed to an upper end of the body; wherein, before gas flows into a furnace for ignition, the gas firstly flows into said excessive flow protection valve, then by the tightly sealing of the diaphragm set, said diaphragm set will move downwards to be slightly inclined so that a hanging end of 7 said lever will act an downward force, and thus, another end of said lever rises upwards, then the gas flows into the opening channel through said via hole; then said safety control valve uses to regulate gas flow so that gas can flow to said gas output channel successfully.

2. The gas regulator as claimed in claim 1, wherein said body is a funnel casing spaced into an upper portion and a lower portion.

3. The gas regulator as claimed in claim 1, wherein a positioning convex point is installed at an upper edge of said body.

4. The gas regulator as claimed in claim 1, wherein said body encloses said upper cover by riveting.

5. The gas regulator as claimed in claim 1, wherein a filtering net is extra installed in said opening channel for filtering impurities and preventing the obstruction of furnace opening.

6. The gas regulator as claimed in claim 1, wherein a rolling ball means is installed in said excessive flow protection valve for controlling the gas flow, as the impact of gas is greater than normal value, then the opening will be sealed automatically.

7. The gas regulator as claimed in claim 1, wherein the safety control valve is a three stage structure for selecting to be closed, opened, half closed,

8. The gas regulator as claimed in claim 1, wherein the diaphragm set is formed by a round diaphragm and a base cloth.

9. The gas regulator as claimed in claim 8, wherein the round diaphragm is made of synthetic rubber.

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10. The gas regulator as claimed in claim 8, wherein the base cloth is canvas.

11. The gas regulator as claimed in claim 3, wherein a notch is formed at an edge of said upper cover and said diaphragm for combining with said positioning convex point for preventing from rotation.

12. The gas regulator substantially as hereinbefore described with reference to, and as illustrated in figures 2 to 7 of the accompanying drawings.

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