JP3041112U - Gas combustor and gas pressure stabilizer - Google Patents

Abstract

(57) Abstract: A gas combustor is proposed, which does not require a reflux heating device, completely vaporizes gas, has a great combustion effect, and can ensure safety. SOLUTION: A fitting device 2 is connected to the rear of a basic part 1,
The gas control device 3 is connected to the canned gas and is located above the basic part.
To control gas degassing, aeration and gas output. A pressure stabilizer 4 is connected to the lower part of the basic part 1 to stabilize the pressure of the gas flowing from the gas control device and completely vaporize it, and then the gas passes through a pipe provided in the basic part,
It is ejected from the gas ejection port 132. Also, after mixing with air in the basic part, it directly enters and ejects the eruption device 8,
Then, the piezoelectric device 5 causes combustion. It is also possible to add the simmering rod 616 and the heat-drying pipe 63, and it becomes a heat-drying device. When the eruption device 8 is replaced, the flame ejected from the combustion device becomes various.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a gas combustion device and a gas pressure stabilizing device applied to the device, and more particularly, to a gas combustor using a canned gas as a fuel source, and the gas is completely vaporized without the need for a reflux heating device. It has an excellent combustion effect and can secure safety.

[0002]

[Prior art]

 U.S. Pat. No. 5,082,440 and U.S. Pat. No. 5,531,592 owned by the present inventor disclose a Handy Gas Torch using a conventional lighter as a fuel source. doing. However, since the gas combustor has a limited capacity (lighter) in the gas container, it cannot be heated for a long time. Generally, in combustion work for a relatively long time, canned gas is generally used as the fuel source. . Concerning the convenience of canned gas, taking US Pat. No. 5,446,149 owned by the present inventor as an example, the canned gas and the inlet of the heating part are connected to store liquid gas. Inject into cylinder to supply fuel source. In another form, for example, U.S. Pat. No. 4,804,324 of Prince Industrial Development Co., Ltd., a connecting device is provided at the bottom to connect the canned gas to the can. The fuel inside is vaporized and supplied to the combustion device for welding, soldering or other combustion work. However, in the process of welding, soldering or drying, we usually turn over the gas in a can in our hand, but at this time, the liquid gas flows out at high pressure, Evaporation is not always in time, and liquid directly ejects from the crater, causing incomplete combustion. This is not only inefficient in combustion, but also extremely dangerous.

[0003]

[Problems to be solved by the device]

 The subject of the present invention is how to use canned gas as a fuel source and at the same time effectively control the combustion pressure and maintain a stable constant pressure.

[0004]

[Means for Solving the Problems]

 In the gas combustion device of the present invention, a fitting device is connected to the rear of the basic part to connect the canned gas, and an air control device is connected to the upper part of the basic part to disconnect the gas, vent the gas, and discharge the gas. To control. A pressure stabilizer is connected to the lower part of the basic part to stabilize the pressure of the gas flowing from the air control device and completely vaporize it.Then, the gas passes through the pipe installed in the basic part and the gas outlet After being ejected, and after mixing with air in the basic part, it directly enters and ejects the eruption device, and then is caused to combust by the piezoelectric device. The member is covered with a cover. Further, the present invention can add a simmering rod and a heat drying tube, thereby forming a heat drying device. Also, when the eruption device is replaced, the flame ejected from the combustion device of the present invention becomes various.

[0005]

[Embodiment of the invention]

 As shown in the figure, the gas combustion device of the present invention is basically composed of a basic part 1, a fitting device 2, a gas control device 3, a pressure stabilizing device 4, a piezoelectric device 5, an erupting device 6 and a cover 7. It As shown in FIGS. 1 and 2, the main body of the basic portion 1 is an integrally molded body, and a fitting portion 11 is provided in the rear lateral direction of the main body 1 and is connected to a fitting device 2 for connecting with canned gas. The fuel of the canned gas passes through the fitting portion cavity 111 in the fitting portion 11. A cavity 12 is provided above the basic portion 1 and a square hole 121 is provided above the cavity 12, and the gas control device 3 is fitted and positioned. After being adjusted by the gas control device 3, the fuel passes through the neck 122 at the bottom of the cavity 12, enters the pressure stabilizing device 4, and after being adjusted by the pressure stabilizing device 4, the effect of complete vaporization and pressure stabilization is obtained. obtain. After that, the gas having a stable pressure passes through the gas passage 131 in the direct pipe 13 and is ejected from the gas ejection port 132 provided in the front. The basic portion 1 is connected to the eruption device 6, an end portion 14 is provided at a front portion of the direct pipe 13, an edge portion 141 is provided at the rear portion thereof, and one or more air inlets 142 are opened in the periphery. Therefore, air enters and helps combustion. At the front portion of the end portion 14, a tenon-shaped end 143 is provided in a stepped shape and is connected to the eruption device 6 to transport the mixed gas (gas and air) into the eruption device 6. The fitting device 2 is mainly connected to the fitting portion 11 and then connected to the gas contained in the can to guide the gas inside the can into the basic portion 1. In the embodiment of the fitting device 2 shown here, the pin 21 and the O-shaped ring 22 are fitted into the opening of the fitting portion cavity 111, and then the hexagon nut 23 and the fitting portion 11 corresponding thereto are provided. The nut holes 112 are combined and tightly connected to fix the hexagon nut 23 and the gas in the can, and the pin 21 is pushed into the valve of the can to help supply the can gas.

The gas control device 3 mainly controls the degassing and ventilation of the fuel that has entered the gas control device 3 from the fitting part cavity 111 after being connected to the cavity 12, and controls the gas output amount. In the embodiment of the gas control device 3 shown here, mainly by inserting the insertion cylinder 31 into the above-mentioned cavity 12, and by coupling the nut end 311 of the head and the square hole 121, a localization effect is produced. A side hole 312 is provided at a position corresponding to the fitting portion cavity 111 of the insertion tube 31, fuel is allowed to enter the tube hole 313, and the tube hole 313 is further screwed with the adjusting screw rod 32. When the screw rod 32 is rotated, the rod lower end 321 seals or opens the insertion cylinder 31 bottom hole 314, and controls the entry of fuel into the pressure stabilizer 4. In addition, after the nut 33 is passed through the rod column 322 of the head of the adjusting screw rod 32, it is fixed to the outer side surface of the cavity 12 to prevent the insertion cylinder 31 and the adjusting screw rod 32 from coming off the insertion cylinder 31. After fitting the knob 34 and the rod column 322, both are firmly fixed with a screw 341, and further, the cap 342 is aligned with the upper opening of the knob 34 and sealed. As a result, when the knob 34 is rotated, the adjusting screw rod 32 also moves in the insertion tube 31 at the same time, and gas degassing and ventilation are controlled.

The pressure stabilizing device 4 is as shown in FIGS. 1 to 4, and is provided at the bottom of the basic part 1, and mainly has a projecting center hole 123 below the neck part 122 of the basic part 1. A stepped upper plate-shaped body 124 is provided at the bottom thereof to form an upper plate-shaped chamber 125, and the gas passage 131 described above is provided in the side surface direction thereof to form a gas passage. The pressure stabilizing device 4 is composed of a telescopic valve 41, a diaphragm 42, a telescopic spring 43, and a lower plate-shaped body 44. The expansion valve 41 mainly covers the center rod 411 with the leak prevention ring 412, and then presses the leak prevention ring 412 with the retaining ring 413 so that the center rod 415 is provided in the shaft hole 415 provided at the center of the shaft cylinder 414. , The fitting ring 416 on the bottom part thereof is also covered with the leakage prevention ring 417, the center rod 311 is inserted into the shaft hole 415, and then the shaft spring 418 is covered, and the bottom part and the tenon-shaped bottom part 419 are covered. Weld the shaft cylinder 414 into the central hole 123. The gas enters the center hole 123 from the neck 122, further passes through the shaft hole 415, enters the upper plate-shaped chamber 125, and then is guided outward through the gas passage 131. The diaphragm 42 is an elastic body, the appearance of which is a stepped disc-shaped body, is housed between the upper disc-shaped body 124 and the lower disc-shaped body 44, and has a hole 421 at a position corresponding to the tenon-shaped bottom portion 419. An annular rectangular body 422 is provided at a position corresponding to the disc-shaped body groove 126 on the bottom of the upper disc-shaped body 124, and the disc-shaped body groove 126 and the square body 422 are fitted and positioned. In addition, a comparatively thin annular film 423 is provided at the center of the diaphragm body 42, a downwardly extending annular protrusion 424 is provided at the lower end portion facing the hole 421, and an expandable spring 43 is covered. After inserting the shape body 44 into the lower board shape chamber 441, after aligning the four corners of the lower board shape body 44, the diaphragm body 42 and the upper board shape body 124 and screwing them together with the screws 442, the assembly of the pressure stabilizer 4 is completed.

The pressure adjusting principle of the pressure stabilizing device 4 of the present invention is shown in FIGS. The gas sent out by the gas control device 3 enters the neck portion 122, then passes through the center hole 123 and the shaft hole 415, enters the upper chamber 125 above the diaphragm 42, and then the gas passes through the gas passage 131. The gas is ejected from the gas ejection port 132. Since the hole diameter of the gas ejection port 132 is relatively small, an excessive amount of gas or liquid gas that is not completely vaporized is quickly filled and remains in the upper plate-shaped chamber 125. As the pressure of the upper plate-shaped chamber 125 increases, the diaphragm 42 moves downward and the expansion / contraction panel 43 is compressed, so that the axial spring 418 extends and moves the tenon-shaped bottom 419 and the center rod 411 downward. Since the leak prevention ring 412 seals the shaft hole 415, the gas supply is stopped and the state shown in FIG. 4 is obtained. The liquid gas or vaporized gas in the upper plate-shaped chamber 125 is gradually sent out from the gas passage 131, and when the pressure in the upper plate-shaped chamber 125 decreases, the expansion spring 43 returns to the original shape again, and the diaphragm 42. Are pushed back upward, the tenon-shaped bottom 419 compresses the axial spring 418, the center rod 411 is pushed upward, and the gas follows the above-mentioned route and enters the upper plate-shaped chamber 125. Since the gas is sent to the upper chamber 125 and sent out from the upper chamber 125 very quickly, in practice, the diaphragm 42 repeatedly reciprocates up and down. It is vaporized to obtain a pressure stabilizing effect. By implementing this pressure stabilizing device 4, generally, when a canned gas combustor is used, it is not necessary to separately install related members such as a gas residual heat recirculation device. The piezoelectric device 5 is mainly provided with slides 511 on both sides of the button 51, and is connected and slid in correspondence with the slot provided in the cover 7. A protruding portion 512 is provided above the button 51, and after being connected to the return body 52, the lower end of the return body 52 is inserted into the cavity 513, the piezoelectric device 53 is further housed therein, and the conducting wire 531 of the piezoelectric device 53 is provided. After covering it with a heat insulating pipe 532, it extends into the eruption device 6 and burns the mixed fuel in the eruption device 6.

Further, according to the present invention, in order to adjust the concentration ratio of air and gas and to ignite, a hole blocking body 521 which is arcuate and faces the end portion 14 is provided above the return body 52. When the button 51 is pressed, the return member 52 also moves backward at the same time, and the hole blocker 521 closes the air inlet 142, the ratio of air to gas becomes 7: 3, and the mixed gas burns. When the button 51 is released, the piezoelectric element 53 returns to its original state under the influence of the spring, and the button 51 returns to its original state. Therefore, the hole blocker 521 and the air inlet 142 are separated, and air and gas are separated. The ratio becomes 9: 1 and burns. The eruption device 6 mainly fits the tube rear part 611 of the gas mixing tube 61 into the tenon-shaped end 143 and receives the mixed gas. A front hole 613 is opened in the pipe front part 612, an insulator 614 made of a refractory material is fitted, and a heat insulating pipe 532 is inserted and orientated. When the button 51 is pressed, the end of the conducting wire 531 generates an electrostatic spark with the inside of the gas mixing pipe 61, causing the combustion of the mixed gas, and the combustion work can be performed immediately. Further, in the case of reducing the flame and performing a small amount of welding and drying, it is possible to add a simmering rod 616 as shown in FIGS. 1 and 5, and a through hole is formed at an appropriate position of the pipe front part 612. 615 is provided and the simmering rod 616 is inserted and fixed. The heat insulating pipe 532 and the simmering rod 616 are theoretically formed in a cross shape, and the flames are in contact with each other in a cross shape. Therefore, the dividing effect is exactly produced, and the flames are not concentrated at one point, which is convenient for the progress of combustion work. Will be things. Besides the basic combustion device, the present invention may also be a heat drying device, which mainly connects the cap end 621 of the connecting cap 62 to the tenon-shaped end 143 and extends in front of it. The cap edge portion 622 is provided with slightly staggered heat insulating grooves 623 to reduce heat transferred to the basic portion 1. At the same time, when the mouth portion 631 of the heat drying pipe 63 is connected to the cap edge portion 622, the flame ejected by the eruption device 6 becomes inside the heat drying pipe 63, hot air is ejected from the pipe mouth 632, and paint drying, film shrinkage, and softening occur. It is convenient for applications from drying and thawing to melting snow. Further, in order to prevent heat conduction of the heat drying tube 63 to the cover 7, the heat drying tube 63 is covered with a heat insulating ring 64, and some protruding contact points 641 are provided inside the heat insulating ring 64. Contact 63. It has an effective heat insulating effect in addition to the effect of locating the heat drying tube 63 inside the cover 7.

When the left cover 71 and the right cover 72 are joined symmetrically, the cover 7 is provided with some tenons and grooves in the two covers in order to insert the above-mentioned members inside. The above-mentioned members are orientated and incorporated inside. The diagram after assembly is as shown in FIG. 6, but a few heat dissipation holes 73 are provided at appropriate places of the left and right covers to prevent the temperature inside the cover 7 from overheating. In addition to this, considering that the liquid gas in the cold region cannot be normally vaporized, an air pump 74 is added to the handle portion of the outer cover 7, and a pump handle 741 is attached to a portion extending downward and fitted upward. An air transport pipe 742 extending to the air feed hole 113 in front of the joint 11 is provided. When the pump handle 741 is pushed, the air is sent from the air transport pipe 742, enters the cavity 111 of the fitting portion 1 of the basic portion 1 through the air feeding hole 113, mixes with the gas, and applies pressure. Another embodiment of the eruption device 8 of the present invention is as shown in FIG. 7, in which the nut body 82 is provided on the outer side surface of the tenon-shaped end 143 after the bending tube 81 is fitted on the tenon-shaped end 143. The air adjusting portion 83 having an air admission groove (not shown) between the nut body 82 and the edge 141, and the air admission groove of the rotating air adjusting portion 83 has an air inlet 142. When entering the bending tube 81, the air enters the end portion 14, and at the same time, the gas ejected from the gas ejection port 132 enters the bending tube 81 together. Further, the pipe thread 811 at the other end of the bending tube 81 and the inner thread 841 correspondingly provided on the outer tube 84 are screwed together, and a dent 842 is provided at an appropriate position on the outer tube 84. The crater 85 having a slight arcuate groove 851 in the periphery fitted in 84 stops at the indentation 842 and prevents separation from the outer tube 84. Also, a spring 86 is inserted between the crater 85 and the curved tube 81 to orient the crater 85. A conductor 531 extending from the piezoelectric device 5 and wrapping the heat insulating tube 532 passes through the end portion 14 and the curved tube 81 and is provided near the crater 85 to cause the burning of the mixed gas to cause the flame ejected from the crater 85. Make a spiral. When the end of the lead wire 531 is connected to the Y-type terminal 533 in order to perform the ignition smoothly, electrostatic spark is generated between the two ends of the Y-type terminal 533.

[0011]

[Effect of the invention]

 According to the present invention, the pressure stabilizing device can sufficiently vaporize the gas and maintain the constant pressure, and by ejecting the gas from the gas ejection port, the generated flame can be used without being excessive or excessive. It ensures the safety of the person. Also, by pushing the piezoelectric device, the hole blocker closes the air inlet, adjusts the mixing ratio of air and gas, and ignites the mixed gas. Furthermore, the combustion device can be used as a heat drying device by combining a heat splitting device and a heat drying tube of the eruption device. By installing an air pump, the liquefied gas is appropriately pressurized and vaporized.

[Brief description of the drawings]

FIG. 1 is a three-dimensional exploded schematic view of a gas combustion apparatus of the present invention.

FIG. 2 is a sectional view of the device of the present invention after assembly.

FIG. 3 is a cross-sectional view (vented state) of the pressure stabilizing device according to the present invention.

FIG. 4 is another cross-sectional view of the pressure stabilizing device according to the present invention (in a degassed state).

FIG. 5 is a side sectional view of the ignition device of the present invention.

FIG. 6 is a perspective view of the present invention after assembly.

FIG. 7 is a schematic view of another embodiment of the eruption device of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Basic part 11 Fitting part 111 Fitting part cavity 113 Air feeding hole 12 Cavity 122 Neck part 123 Center hole 124 Upper plate form 125 Upper plate room 126 Plate form groove 13 Direct pipe 131 Gas passage 132 Gas ejection port 14 End part 141 Edge 142 Air inlet 143 Mortise end 2 Fitting device 21 Pin 22 O-type ring 23 Hexagon nut 3 Gas control device 31 Insertion tube 32 Screw rod 33 Nut 34 Knob 341 Screw 342 Cap 4 Pressure stabilizer 41 Expansion valve 411 Center Rod 412 Leak prevention ring 414 Shaft cylinder 415 Shaft hole 416 Fitting ring 417 Leak prevention ring 418 Shaft spring 419 Mortise bottom 42 Septum 421 hole 422 Square body 423 Annular membrane 424 Annular protrusion 43 Expansion spring 44 Lower plate body 441 Lower plate Shaped chamber 442 Screw 5 Piezoelectric device 51 Button 5 3 Cavity chamber 52 Return body 521 Hole blocker 53 Piezoelectric device 531 Conductor wire 532 Insulation pipe 533 Y-type terminal 6 Eruption device 61 Gas mixing pipe 612 Pipe front part 613 Front hole 614 Insulator 615 Through hole 616 Dividing rod 62 Connecting cap 621 Cap end part 622 Cap edge part 623 Thermal insulation groove 63 Heat drying pipe 631 Port part 632 Pipe port 7 Cover 71 Left cover 72 Right cover 73 Radiating hole 74 Air pump 741 Pump handle 742 Air transport pipe 8 Eruption device 81 Curved pipe 82 Nut Body 83 Air conditioner 84 Outer tube 842 Dimple 85 Eruption 851 Arc groove 86 Spring

Claims (5)

[Utility model registration claims] 1. The following components (a) (b) (c) (d) (e) (f) and (g)
A gas combustion device comprising: (a) The body of the basic part is an integrally molded body, the fitting part is provided in the rear, the fitting part cavity is provided in the fitting part, it is directly connected to the cavity installed in the vertical direction, and the neck part is provided at the bottom part. , Connecting a relatively large center hole and the upper plate body with the inverted plate shape, connecting the upper plate chamber formed by the upper plate body and the gas passage in the direct pipe, and connecting the end part to the front of the direct pipe. An edge is provided at the rear, one or more air inlets are opened in the periphery, and a stepped tenon-shaped end is formed at the front. (b) The fitting device is connected to the fitting part and then connected to the gas in the can, and the gas passes through the fitting part cavity and enters into the cavity. (c) The gas control device provides degassing, ventilation, and adjustment of the gas output amount to the gas that has entered the gas control device from the fitting cavity after being connected to the cavity. (d) The pressure stabilizer is provided below the basic part, and is composed of an expansion valve, a diaphragm, an expansion spring, and a lower plate shape.
The expansion valve, after covering the center rod with the leakage prevention ring, is inserted into the shaft hole of the shaft cylinder, and the fitting ring at the bottom of the shaft cylinder is also covered with the leakage prevention ring, and then fitted into the center hole, After the center rod protruding from the shaft hole is covered with a shaft spring and connected, it is joined to the tenon-shaped bottom and moved up and down on the center rod.The diaphragm is an elastic body, and its shape is the upper plate shape. Corresponding to the lower plate shape, it is housed between the two and has a hole at the place corresponding to the tenon-shaped bottom part, the tenon-shaped bottom part is inserted, the diaphragm body corresponds to the plate-shaped groove at the bottom part of the upper plate form Each of them is provided with an annular cuboid, and both are fitted and orientated, and a relatively thin annular membrane is provided at the center of the diaphragm, and a downwardly extending annular protrusion is provided at the bottom to cover the expansion spring. After that, the expansion spring is inserted into the lower plate-shaped chamber of the lower plate, and the lower plate, diaphragm and upper plate. After connecting, the gas follows the above-mentioned route and enters the upper chamber, the excessive gas pressure moves the diaphragm and the expansion spring downward, the shaft spring extends, the whole center rod moves downward, and the leakage prevention ring. By sealing the shaft hole, the gas inside the upper chamber continues to vaporize and maintain a constant pressure,
When it is sent out from the gas passage and the gas pressure in the upper chamber becomes small, the expansion spring and the diaphragm return to their original positions and push the center rod upward, at which time the gas is again returned to the upper chamber by the above route. To get into the gas pressure stabilization effect. (e) For the piezoelectric device, put the return member inside the cavity of the button provided in the cover, connect it to the piezoelectric device, cover the conductor of the piezoelectric device with a heat insulating pipe, and then extend it into the eruption device and return it. Above,
The hole blocker corresponding to the end is provided, and when the button is pressed, the hole blocker also moves at the same time, closing the air inlet, adjusting the concentration ratio of air and gas, and burning the gas. (f) For the eruption device, fit one end of the gas mixing pipe to the tenon end,
The mixed gas is received, the gas is ejected from the pipe opening in front of the mixed gas, and the conducting wire having the heat insulating pipe extends into the gas mixing pipe from the front part of the pipe to cause combustion of the mixed gas. (g) When joining the symmetrical left cover and right cover, insert the above-mentioned members inside, and provide some tenons and grooves in the two covers to orient the above-mentioned members. Built in. 2. A front hole is formed in front of the gas mixing tube, an insulator is fitted therein, an adiabatic tube is inserted and oriented, and a through hole is provided in the lateral direction in front of the gas mixing tube to form a squib. Used to split the flame of combustion, and the cap end of the articulating cap connects with the tenon-shaped end, and the cap edge extending in front of it has some staggered insulation grooves. However, the heat conduction to the basic part is reduced, one end of the heat drying tube is connected to the cap edge, and the flame after division ejected from the eruption device is
The gas combustion apparatus according to claim 1, wherein the gas combustion apparatus is combusted in a heat drying pipe, and hot air is ejected from an opening of the heat drying tube to form a heat drying apparatus. 3. The cover includes an air pump device inside thereof, and a pump handle protruding from the cover is provided on the bottom of the pump, and an upper air transport pipe extends to the fitting portion and is connected to an air feed hole. The air feed hole communicates with the fitting portion cavity, and air is sent to the fitting portion cavity by operating a pump handle to pressurize and vaporize gas.
The gas combustion device described. 4. The eruption device comprises a curved tube and a tenon-shaped end fitted to each other, a nut body and a tenon-shaped end connected to each other, an air adjusting portion sandwiched between the nut body and an edge portion, and a portion corresponding to an air inlet. An air inlet groove is provided on the other end, and the other end of the curved pipe is screwed into the outer pipe,
A dent is provided at an appropriate location on the outer tube, and a crater and a spring with arcuate grooves are inserted between the dent and the curved tube, and a mixed gas is ejected from the arcuate groove of the crater. The gas combustion apparatus according to claim 1, wherein the end of the lead wire is connected to the Y-shaped terminal to generate an electrostatic spark. 5. A device for stabilizing gas pressure, comprising a basic portion, a telescopic valve, a diaphragm, an elastic spring, and a lower plate shape, the basic portion having a gas passage inside thereof, and the passage thereof. Is connected to the center plate and the upper plate form with the inverted plate shape, and the upper plate form a chamber for the upper plate, which is connected to the gas delivery pipe that guides the gas outward, and the expansion valve Is inserted into the center hole, the center rod is projected from the shaft hole of the rear cylinder covered with the leak prevention ring, and the leakage prevention ring is fitted to the fitting ring at the bottom of the cylinder, and then fitted into the center hole. After covering the center rod protruding from the shaft hole with a shaft spring,
It is joined to the tenon-shaped bottom and the center rod is moved up and down.The diaphragm body is an elastic body, the shape of which corresponds to the upper plate shape and the lower plate shape, and it is housed between them and corresponds to the tenon-shaped bottom part. A hole is provided in the base, a tenon-shaped bottom is inserted, and an annular angular body is provided at a place corresponding to the board-shaped groove on the bottom of the upper board, which is used for fitting and orientation of both, and is relatively thin in the center of the diaphragm. An annular membrane is provided, and a downwardly extending annular protrusion is provided at the lower end portion, the expansion spring covers the annular protrusion, and the lower plate form has a size corresponding to the upper plate form to form a lower plate-shaped chamber, By inserting the annular protrusion and the expansion spring, the lower plate, the diaphragm, and the upper plate are connected and integrated in order, and the gas enters the upper chamber by the above route, and the excessive gas pressure causes the diaphragm and the expansion spring. Move downwards, the shaft spring extends, moves the whole center rod downwards, and Seals the shaft hole, the gas inside the upper chamber keeps evaporating, maintains a constant pressure, and is sent out from the gas delivery pipe. The diaphragm returns to its original position, the center rod is pushed upward, and the gas again follows the above-mentioned route and enters the upper plate-shaped chamber, whereby a gas pressure stabilizing effect is obtained. .