JPS63247517A - Thermal processing device employing liquefied gas - Google Patents

Abstract

PURPOSE:To ignite easily and surely by a piezoelectric igniting means and burn the whole amount of mixture gas by combustion catalyst, by a method wherein mixture gas, including insufficient air, is produced immediately before ignition and flames are extinguished by a flame shut-off member. CONSTITUTION:When an ignition button 28 is depressed, the operation is transmitted to an air amount regulating member 30 through a connecting member 31 and the member is slid to close an atmosphere intake port 8 fully, thereafter, the member 30 closes a part of the intake port 8. According to this operation, the opening area of the intake port 8 is reduced to reduce the inflow amount of air whereby mixture gas, short in the amount of air and easy to ignite, is obtained. Accordingly, the mixture gas is ignited surely and flaming is generated in a flaming combustion chamber 12 whereby the temperature of the combustion catalyst 20 becomes the temperature of oxidizing reaction of the catalyst. Then, the pressing force exerted on the button 28 is released to close the intake port 8, then, flames are shut off immediately since all the air in the chamber 12 is consumed. After the flames are shut off, mixture gas, having the optimum mixing ratio for combustion, is sent to the catalyst 20 immerdiately and the intake port 8 is opened fully whereby flameless perfect combustion is effected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a thermal processing apparatus using a liquefied gas such as butane gas as a fuel gas, and particularly to a thermal processing apparatus using a liquefied gas having a piezoelectric ignition means. I'll give you one.

[Conventional technology]

Conventionally, as shown in Japanese Patent Publication No. 55-46783, etc., thermal processing has been carried out in which a mixed gas of liquefied gas and air is guided to a combustion catalyst and combusted, and a piezoelectric ignition means is used as the ignition means. The device is generally known.

[Problem that the invention seeks to solve]

Incidentally, in the conventional thermal processing apparatus described above, in order to facilitate ignition by the piezoelectric ignition means, a catalyst supported on a fibrous ceramic carrier is used as the combustion catalyst. There is a problem that the data disappears, and it cannot be put to practical use.

Therefore, in order to make a combustion catalyst that can be put to practical use, it is necessary to use a catalyst supported on a cylindrical carrier with sufficient wall thickness. Since the catalyst cannot reach the oxidation reaction temperature with just a spark, it is necessary to ignite the mixed gas using a large piezoelectric point to cause flaming combustion, and use the heat of the flame to heat the combustion catalyst. When the flow rate of the mixed gas at the spark plug position increases, it is not easy to ignite the mixed gas, and it is very difficult to ignite the mixed gas, especially when igniting for the first time in winter.

In addition, when heating the combustion catalyst with the heat of the flame, it is necessary to extinguish the flame to improve thermal efficiency after the combustion catalyst reaches the oxidation reaction temperature. The problem is that it is not easy.

The present invention was developed in view of the current situation, and even when there is a large amount of mixed gas, it can be easily and reliably ignited by the piezoelectric ignition means, and moreover, once the combustion catalyst is heated to the oxidation reaction temperature, the flame can be quickly and reliably produced. An object of the present invention is to provide a thermal processing device using liquefied gas that can burn the entire amount of mixed gas using a combustion catalyst.

[Means for solving problems]

The present invention includes a gas injection member that injects liquefied gas in a gas tank as fuel gas, and an ejector action of the gas injected from the gas injection member that is provided on the outlet side of the gas injection member to suck air from an outside air intake port. a cylindrical mixed gas generating member that generates a mixed gas by using a cylindrical mixed gas generating member; a nozzle member provided at the tip of the mixed gas generating member that injects the mixed gas into the cylindrical flaming combustion cylinder; a piezoelectric ignition means for igniting the mixed gas; an air amount adjusting member for reducing the amount of air flowing in from the outside air intake port immediately before ignition by the piezoelectric ignition means to create an air-deficient mixed gas; and a tip end of the flaming combustion chamber. The iron tip member includes a combustion catalyst disposed on the side and which burns the mixed gas flamelessly through an oxidation reaction, and a flame extinguishing member that destroys the flaming combustion conditions in the flaming combustion chamber and extinguishes the flame. Features.

[Effect]

In the thermal processing apparatus using liquefied gas according to the present invention,
When the liquefied gas in the gas tank is injected as fuel gas from the gas injection member, air is sucked from the outside air intake port by the ejector action, and a mixed gas is generated within the cylindrical mixed gas generation member. This mixed gas is injected from the nozzle member into the cylindrical flaming combustion cylinder, and is ignited by the piezoelectric ignition means to cause flaming combustion.

By the way, just before ignition by this piezoelectric ignition means, the amount of air flowing in from the outside air intake is reduced by the air amount adjusting member to generate a mixed gas lacking in air, and this mixed gas is supplied to the flaming combustion tube. ignited. This mixed gas has a high gas mixing ratio and the flow rate is also reduced by the amount of air inflow, so that it can be reliably ignited.

The ignition causes flaming combustion of the mixed gas, and the combustion catalyst built into the iron tip member is heated to the acetylation reaction temperature.

After the combustion catalyst is heated, the flaming combustion condition is broken by the flame extinguishing member and the flame is extinguished, and the mixed gas is directly supplied to the combustion catalyst and subjected to combustion therein. Therefore, high combustion efficiency can be obtained, and the combustion catalyst is prevented from being degraded by the flame shining for a long time, making it possible to extend the life of the combustion catalyst.

〔Example〕

A first embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a thermal processing apparatus using liquefied gas for soldering, etc. In the figure, reference numeral 1 indicates a gas tank for storing liquefied gas as fuel gas, 2 indicates a flow rate control valve, and 3
are on-off valves, which are usually incorporated into the handle 4.

At the tip of the handle 4, there is an on-off valve 3 as shown in FIG.
A cylindrical mixed gas generating member 5 that generates a mixed gas by mixing air with the fuel gas discharged from the
It is incorporated with a shaped part that protrudes from.

As shown in FIG. 1, a disk-shaped nozzle plate 6 having a nozzle hole in the center and a filter member 7 made of porous sintered alloy or the like are removably incorporated into the mixed gas generating member 5. It is.

In addition, as shown in FIG. 1, a nozzle plate 6 of the mixed gas generating member 5 is provided at a position on the outlet side for sucking air from the outside by the ejector action of the fuel gas injected from the nozzle plate 6 to generate a mixed gas. For example, four outside air intake ports 8 are provided at equal intervals in the circumferential direction, and when the four outside air intake ports 8 are fully opened, an optimal gas/air mixture ratio for combustion can be obtained.

Further, as shown in FIG. 1, the proximal end of a connecting vibrator 11 having a dish-shaped receiver member 9 and a crater member 10 attached to the distal end is screwed onto the distal end of the mixed gas generating member 5. The base end of a cylindrical flaming combustion tube 13 in which a flaming combustion chamber 12 is formed is inserted into the receiver member 9 . An iron tip member is arranged on the tip side of this flaming combustion tube 13, and this iron tip member 14 supports a support pipe 15 that covers the outside of the flaming combustion tube 13, etc., and this support vibe 15. It is supported by a nut member 16 fixed to the handle 4.

As shown in FIGS. 1 and 2, the crater member 10 has a cylindrical shape with a closed end and has a baffle plate portion 10a at the end in the direction of injection of the mixed gas, and has a plurality of openings on its circumferential surface. A mixed gas injection port 10b is formed, and a buffer diffusion member 10 formed of a net or the like is formed on the outer peripheral surface of the crater member 10.
C is placed. That is, the mixed gas supplied from the connecting pipe 11 collides with the baffle plate portion 10a and is split into two parts, and is ejected from each mixed gas injection port 10b to the buffer diffusion member 10c.
It is supplied into the flaming combustion chamber 12 after being buffered and diffused. And the baffle plate part 10 of this crater member 10
As shown in FIGS. 1 and 2, the tip of the spark plug 17 faces the tip surface a with a predetermined distance therebetween,
The spark plug 17 is activated by operating a piezoelectric ignition element 18, which will be described later.
Electric discharge is generated between the tip of the baffle plate portion 10a and the tip surface of the baffle plate portion 10a, and the mixed gas in the flaming combustion chamber 12 is ignited.

On the other hand, the flaming combustion tube 13 is formed in a cylindrical shape from a heat-resistant transparent or semi-transparent material such as mica ceramics, and is used to carry out flaming combustion within the flaming combustion chamber 12 and a trowel as described below. The state of flameless combustion within the tip member 14 can be confirmed from the outside via the flaming combustion 1k12i13.

As shown in FIGS. 1 and 3, the iron tip member 14 includes a tip body 19 having a cylindrical base end and seven rung portions 19a at the base end, and a soldering iron tip body 19 that is assembled into this body 19. It is equipped with a combustion catalyst row and a removal prevention member 21 fixed to the proximal end of the tip body 19 to prevent the combustion catalyst 20 from being removed, and the tip side of the combustion catalyst 20 of the tip body 19 is provided. for,
An exhaust port η is provided to discharge the combustion exhaust gas of the flameless combustion cedar in the combustion catalyst 20.

As shown in FIGS. 1 and 4, the exhaust port 22 is formed by bending a part of the peripheral wall of the tip body 19 inward into a V-shape by pressing or the like. This bent portion 23 prevents the combustion catalyst 20 from moving toward the tip side, and allows the combustion exhaust from the combustion catalyst 20 to be discharged from the exhaust port n after being appropriately buffered. This eliminates problems such as burns caused by the combustion exhaust forcefully discharged from the exhaust port 22.

As shown in FIGS. 1 and 3, the combustion catalyst 20 has a plurality of through holes 20 a and U
It is constructed by using a ceramic carrier having a shape in which grooves 20b are formed, and supporting a catalyst component containing platinum and rhodium on the surface of the carrier.
The U-groove 20b forms a linear gas flow path in the axial direction in the combustion catalyst, making it possible to perpetuate flameless combustion.

As shown in FIG. 1, the support pipe 15 is formed into a cylindrical shape from a corrosion-resistant metal material, and has seven inner flange portions at its tip that are engaged with the seven flange portions 19a of the iron tip body 19. A portion 15a is provided, and a flange portion 15b of the rail 7 is provided at the proximal end and is locked inside the nut member 16. Further, on the peripheral surface of the support pipe 15, as shown in FIG. 1, an air port 24 corresponding to the outside air intake port 8 and a viewing window 4 corresponding to the flaming combustion tube 13 are provided, respectively.

On the other hand, the piezoelectric ignition element 18 is incorporated into the handle 4 as shown in FIG.
7, and the (-) side terminal is connected to the guide member 27.7 disposed between the mixed gas generation member 5 and the piezoelectric ignition element 18. Mixed gas generating member 5. and is connected to the crater member 10 via a connecting pipe 11. Further, the ignition button 28 of the piezoelectric ignition element 18 projects outward from the handle 4 as shown in FIG.
It is constantly pressed outward by the urging force of. By pressing the ignition button 28 against the biasing force of the spring 29, electric discharge occurs between the tip of the spark plug 7 and the tip surface of the baffle plate portion 10a as described above, and the ignition button 28 is pressed against the urging force of the spring 29. An air amount adjusting member (9) that also serves as a flame extinguishing member is operated in conjunction with the air extinguishing member 28 to adjust the amount of air flowing in from the outside air intake port 8.

That is, the air amount adjusting member (equipment) is as shown in Fig. 1, Fig. 5,
As shown in FIGS. 6 and 7, the air amount adjusting member 30 is formed into a short cylindrical shape, and is attached to the outer circumference of the mixed gas generating member 5 so as to be slidable in the axial direction. . This air amount adjusting member (equipment) is connected to the ignition button 28 via a connecting member 31, as shown in FIG.

This connecting member 31 is shown in FIGS. 1, 5, and 6.

As shown in FIGS. 7 and 8, it is formed into a band shape of, for example, stainless steel having a certain rigidity and flexibility, and its tip is fixed to the air amount adjusting member 30,
Further, the base end side is fixed to the ignition button 28 after being curved within the handle 4, as shown in FIG. Further, as shown in FIGS. 1 and 8, this connecting member 31 is disposed within a guide groove 32 provided in the handle 4, with the lower surface side supported by the mixed gas generating member 5 and the guide member n. As a result, the bending position gradually changes as the ignition button 28 is operated, and the air amount adjusting member (9) is activated.

That is, when the ignition button 28 is pressed against the biasing force of the spring 29, the curved position of the connecting member 31 shown in FIG. The amount adjusting member is adapted to slide to the left in FIG. In addition, the ignition button 28
When the connecting member 31 is returned to its original state by the biasing force of the spring 29, the curved position of the connecting member 31 gradually shifts to the distal end side and the entire connecting member 31 is pulled toward the proximal end side, thereby causing the air adjustment member J to move as shown in FIG. It is designed to slide to the right.

Next, the operation of this embodiment will be explained.

When the ignition button 28 is not pressed, the air amount adjusting member 30 closes to the outside air intake port 8 as shown in FIGS. 1 and 5.
The outside air intake port 8 is in a fully open state.

When the on-off valve 3 is opened in this state, fuel gas at the flow rate set by the flow rate control valve 2 is discharged from the gas tank 1, mixed with air flowing in from the outside air intake port 8 in the mixed gas generation member 5, and combusted. 'A mixed gas with an optimal mixing ratio is obtained. This mixed gas is injected into the flaming combustion chamber 12 from the mixed gas injection port 10b of the nozzle member 10 via the connecting pipe 11.

Therefore, the ignition button 28 is pressed against the biasing force of the spring 29 to cause discharge between the tip of the spark plug 17 and the tip surface of the baffle plate portion 10a.

By the way, when the mixed gas bolt is small, the mixed gas in the flaming combustion chamber 12 can be ignited with one ignition operation, but as the amount of mixed gas increases and its flow velocity increases, as mentioned above, It may not be possible to ignite the mixed gas.

Therefore, in this embodiment, an air amount adjusting member 30 that is linked to the ignition button 28 is used to bring the mixed gas into a state where it is easy to ignite, and then ignite it.

That is, when the ignition button 28 is pressed, this movement is transmitted to the air amount adjusting member 30 via the connecting member 31, and the air amount adjusting member 30 slides to the left in the figure from the state shown in FIG. After the air amount adjusting member 30 completely closes the four outside air intake ports 8 (see FIG. 7), the air amount adjustment member 30 closes all the four outside air intake ports 8 by b-% as shown in FIG. It is in a closed state. As a result, the total opening area of the outside air intake port 8 becomes 67% to 75% when the fully open state is 100%. In this state, ignition by the spark plug 17 is performed.

By the way, in the state shown in FIG. 6, the outside air intake port 8
The amount of air inflow from the opening is reduced compared to the fully open state, and the flow rate of the mixed gas injected from the public population member 10 is slowed down, and moreover, there is a shortage of air.

In other words, the mixed gas has a high gas mixture ratio and is easy to ignite. In addition, the discharge occurs on the tip side of the baffle plate portion 10a,
Since this position is where the flow velocity of the mixed gas further decreases, even in the harshest of winter, ignition can be ensured with a single ignition operation.

The ignited mixed gas undergoes flaming combustion within the flaming combustion chamber 12, and the combustion catalyst 20 reaches the stratification reaction temperature in 1 to 2 seconds after ignition due to the heat of the flame.

Therefore, the pressure on the ignition button 2B is released, and the spring 2
9 automatically returns the ignition button 28 to the state shown in FIG. This movement is transmitted between the air amount adjusting members via the connecting member 31, and the air amount adjusting member (part) slides from the state shown in FIG. 6 to the right in the figure and finally reaches the position shown in FIG. The state shown in is reached. During the sliding operation, the four outside air intake ports 8 are fully closed as shown in FIG.

When the four outside air intake ports 8 are completely closed, the fuel gas in the gas tank 1 is directly injected from the crater member 10, and all the air in the flaming combustion chamber 12 is used up by flaming combustion. Therefore, there is no air required for combustion. Therefore, the flame in the flaming combustion chamber 12 is immediately extinguished, and the gas is directly sent to the combustion catalyst 20.

By the way, since this gas does not contain any air as described above, the state sintering shown in FIG. 7 is not performed.

However, the state shown in Figure 7 lasts only a short time.
Since the state shown in FIG. 5 is immediately reached, the mixed gas having the optimum mixing ratio for combustion is sent to the combustion catalyst 20 immediately after the flame is extinguished. As a result, complete flameless combustion is performed in the combustion catalyst 20.

Therefore, the air amount adjusting member 30 has the function of reducing the amount of air flowing in from the outside air intake port 8 at the time of ignition to create an air-deficient mixed gas, and the function of completely closing the outside air intake port 8 after flaming combustion to suppress the flame. Since it also has the function of extinguishing flames, the structure is simple, and the air amount adjusting member 30 can be connected to the ignition button 2.
8, it is possible to ignite and extinguish the flame simply by performing the ignition operation without having to be particularly aware of the operation of the air amount adjusting member 30.

FIG. 9 shows a second embodiment of the present invention, in which the iron tip member temperature is used in place of the iron tip member 14 in the first embodiment.

591 L-Hot air discharge port 3 that has 7 rungs 39a at the base end and discharges combustion exhaust as hot air at the tip.
The iron tip body 39 is provided with a cylindrical tip body 39 having a diameter 9b, and a combustion catalyst 20 is incorporated in the tip body 39 as in the first embodiment. A retaining member 21 is fixed to the retainer.

Note that other points are completely the same as the first embodiment.

By using this iron tip temperature, the hot air discharged from the hot air outlet 39b can be used to weld the soldering 2 synthetic resin and to cover, dry, or heat the molten 1 synthetic resin film. can.

10 to 12 show a third embodiment of the present invention, in which the air amount adjusting member 30 in the first embodiment is shown.
Instead, an air amount adjusting member holder is used.

That is, as shown in FIGS. 10 to 12, the air amount adjusting member 40 has a projecting piece 40 at one location in the circumferential direction of the base end surface.
It is formed into a cylindrical shape with a short dimension of a. In the normal state, the air amount adjusting member 40 is designed to fully open the four outside air intake ports 8 as shown in FIG. 10, and at the time of ignition, as shown in FIG. One of the four outside air intake ports 8 is fully closed and three are fully opened, and furthermore, while returning from the state shown in FIG. 11 to the state shown in FIG. 10, the state shown in FIG. As shown in the figure, all four outside air intake ports 8 are completely closed.

Note that other points are completely the same as the first embodiment.

Therefore, even if this air amount adjusting member 40 is used, the same effects as in the first embodiment can be expected.

13 and 14 show a fourth embodiment of the present invention, in which an air amount adjusting member 50 is used in place of the air amount adjusting member 30 in the first embodiment.

That is, as shown in FIG. 13, the air amount adjusting member 50 is formed in a cylindrical shape having four openings 5Qa at equal intervals on its circumferential surface, and this air amount adjusting member 50 is used for generating mixed gas. It is mounted between a pair of guide rings 51 protruding from the outer peripheral surface of the member 5 so that it can rotate only in the circumferential direction.

On the other hand, at the tip of the connecting member 31, a long hole 52 is provided in an oblique direction as shown in FIG.
The reciprocating movement of the connecting member 31 in the axial direction is converted into rotational movement of the air amount adjusting member 50 in the circumferential direction. In normal times, all four outside air intake ports 8 are fully opened by the openings 50a, as shown in FIG.
- Only the opening 50a is closed, and when the flame is extinguished, all four outside air intake ports 8 are completely closed except for the opening 50a.

Note that other points are completely the same as the first embodiment.

Therefore, even if this air amount adjusting member 50 is used, the same effects as in the first embodiment can be expected.

Chiku IR1'2+ to 17th □□□ show the fifth embodiment of the present invention, and the outside air intake port 8 in the first embodiment
Instead, outside air intake ports 68a and 68b are used.

That is, both the outside air intake ports 68a and 68b are the 15th
As shown in the figures to FIG. 17, the outside air intake port 68b is opened on the outer circumferential surface of the mixed gas generation member 5 with an axial interval wider than the width dimension of the air amount adjusting member 30.
As shown in FIG. 5, the air amount adjusting member (9) normally closes the outside air intake port 68a, and the outside air intake port 68a is completely closed by the air amount adjusting member 30 during ignition as shown in FIG. There is.

Further, the opening area of the outside air intake port 68a is
The opening area of the outside air intake port 68b is set so that a mixed gas having the optimum mixing ratio for combustion can be obtained by itself, and the opening area of the outside air intake port 68b is set such that an air inflow amount of 67 to 75% of the air inflow amount from the outside air intake port 68a can be obtained. It is set so that

In other respects, the configuration is the same as that of the first embodiment.

In the above configuration, at the time of ignition, only the outside air intake port 68b is opened as shown in FIG. 16, and the mixed gas generation member 5 generates a mixed gas lacking air. For this reason,
As in the case of the first embodiment, ignition can be easily and reliably performed.

After flaming combustion, when returning to the normal configuration, the air amount adjusting member 30 goes through the state shown in FIG. 17 and then into the state shown in FIG. 15.

By the way, in the state shown in FIG. 17, both outside air intake ports 68
Since both a and 68b are fully open, the mixed gas generating member 5 generates a mixed gas of excess air with an extremely high air mixing ratio.

As a result, the flaming combustion conditions collapse and the flame disappears.

Even with this configuration, the same effects as in the first embodiment can be expected.

In each of the above embodiments, a case has been described in which a mixed gas lacking in air is generated by the air amount adjusting members 30, 40, and 50 at the time of ignition. If an air-deficient mixed gas is generated just before ignition, this mixed gas will be supplied to the flaming combustion tube 13 at the time of ignition, and a similar effect can be obtained.

Further, in each of the above embodiments, the air amount adjusting member 30
, 40, 50 are operated in conjunction with the ignition button 28, but the air ffi adjustment member 30, 40,
50 may be manually actuated independently of the ignition button 28.

In each of the above embodiments, the air amount adjusting member (equipment) is used.

Although the case has been described in which the air amount adjusting members 30, 40, 50 have both the function of generating a mixed gas lacking air at the time of ignition and the function of extinguishing the flame after ignition, the air amount adjusting members 30, 40, 50 It is also possible to provide only the function of generating a mixed gas lacking air at the time of ignition, and to extinguish the flame using another member.

FIG. 18 shows the sixth aspect of the present invention made from this viewpoint.
This is an embodiment in which a flame extinguishing member 70 is provided in the flaming combustion tube 13 to prevent flaming combustion exhaust from being discharged and extinguish the flame.

That is, as shown in FIG. 18, the flame extinguishing member 70 has a disc shape with approximately the same diameter as the inner diameter of the flaming combustion tube 13, and the flame extinguishing member 70 is provided at the end of the rotating shaft 71. By operating the handle 72, two positions can be taken: a fully closed position shown by a solid line in FIG. 18 and a fully open position shown by a chain line in FIG.

In the above configuration, the mixed gas is ignited with the flame extinguishing member 70 in the fully open position shown by the chain line in FIG. At this time, an air-deficient mixed gas is generated and ignited by an air amount adjusting member (not shown), and after ignition, the mixed gas is made to have an optimum air amount.

Once the combustion catalyst 20 has been sufficiently heated by flaming combustion within the flaming combustion chamber 12, the handle 72 is operated to move the flame extinguishing member 70 to the fully closed position shown by the solid line in FIG. Then,
The pressure within the flaming combustion chamber 12 increases due to the flaming combustion exhaust, and the mixed gas is no longer supplied into the flaming combustion chamber 12, causing the flame to go out.

After the flame is extinguished, the flame extinguishing member 70 is again placed in the fully open position shown by the chain line in FIG. 18, and the mixed gas is directly supplied to the combustion catalyst 20.

However, even with this method, it is +1 @ number 1 to extinguish inflammation.
b Shichimokadatei 1n Sakaki? It is not necessary to arrange the iron tip body 19 in the fire cocoon chamber 12, for example, as shown in FIG.
It may also be placed inside the tip body or inside the tip body as shown in FIG. Alternatively, without using the flame extinguishing member 70, for example, the on-off valve 3 shown in FIG. 1 may be fully closed, and after the flame has been extinguished, the on-off valve 3 may be fully opened again. That is, in this case, the on-off valve 3 also serves as a flame extinguishing member.

〔Effect of the invention〕

As explained above, the present invention generates an air-deficient mixed gas immediately before ignition, so even when the amount of mixed gas is large, it can be easily and reliably ignited by the piezoelectric ignition means.

Further, after ignition, the flame extinguishing member destroys the flaming combustion conditions in the flaming combustion chamber to extinguish the flame, so the mixed gas is directly sent to the combustion catalyst, resulting in high thermal efficiency.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention, FIG. 2 is a perspective view of a nozzle member and a spark plug, FIG. FIGS. 5 to 7 are explanatory diagrams sequentially showing the operating states of the air amount adjusting member, FIG. 8 is a sectional view taken along the line ■-■ in FIG. 1,
FIG. 9 is a cross-sectional view of main parts showing the second embodiment of the present invention, and FIG.
12 to 12 are views equivalent to FIGS. 5 to 7 showing the third embodiment of the present invention, FIG. 13 is a view equivalent to FIG. 5 showing the fourth embodiment of the present invention, and FIG. 14 is a view equivalent to FIG. FIG. 13 is a plan view, FIGS. 15 to 17 are views corresponding to FIGS. 5 to 7 showing the fifth embodiment of the present invention, and FIG. 18 is a cross section of a main part showing the sixth embodiment of the present invention. It is a diagram. DESCRIPTION OF SYMBOLS 1... Gas tank, 3... Opening/closing valve, 5... Mixed gas generation member, 6... Nozzle plate, 8, 68a. 68b...Outside air intake, 10...Cinder member, 10
a...Baffle plate part, 10c...Buffer diffusion member, 1
3...flaming combustion tube, 14.34... iron tip member,
17... Spark plug, 18... Piezoelectric ignition element, 2
0... Combustion catalyst, 28... Ignition button, 29... Spring, (supply), 40, 50... Air amount adjustment member, 31... Connection member, 70... Flame extinguishing member. Figure 5 Figure 6 Figure 13 Figure 16 Figure 17 Figure 18

Claims (1)

[Scope of Claims] 1) A gas injection member that injects the liquefied gas in the gas tank as fuel gas, and an ejector action of the gas injected from the gas injection member, which is provided on the outlet side of the gas injection member, from the outside air intake port. a cylindrical mixed gas generating member that sucks air to generate a mixed gas; a tinder member provided at the tip of the mixed gas generating member that injects the mixed gas into a cylindrical flaming combustion cylinder; a piezoelectric ignition means for igniting the mixed gas in the combustion cylinder; an air amount adjusting member for reducing the amount of air flowing in from the outside air intake port to create an air-deficient mixed gas immediately before ignition by the piezoelectric ignition means; A tip member disposed at the tip side of the combustion tube and containing a combustion catalyst that burns the mixed gas flamelessly through an oxidation reaction, and a flame extinguishing member that destroys the flaming combustion conditions in the flaming combustion chamber and extinguishes the flame. A thermal processing device using liquefied gas, comprising: 2) The crater member includes a baffle plate portion at the tip in the direction of injection of the mixed gas, and the ignition spark by the piezoelectric ignition means is generated between the plug of the piezoelectric ignition means and the tip surface of the baffle plate portion. A thermal processing apparatus using liquefied gas according to claim 1. 3) The thermal processing apparatus using liquefied gas according to claim 1 or 2, wherein the flame extinguishing member is a member that prevents air from flowing in from the outside air intake port. 4) The thermal processing apparatus using liquefied gas according to claim 1 or 2, wherein the flame extinguishing member is a member that allows excess air to flow in from the outside air intake port. 5) The thermal processing apparatus using liquefied gas according to claim 1 or 2, wherein the flame extinguishing member is a member that prevents flaming combustion exhaust from the flaming combustion tube. 6) The thermal processing apparatus using liquefied gas according to claim 1 or 2, wherein the flame extinguishing member is a member that prevents injection of fuel gas from the gas injection member.