JPH07250995A - Catalyst combustion iron - Google Patents

Abstract

PURPOSE:To sustain good catalyst combustion by ejecting an always stable evaporated gas from a nozzle at the time of utilizing the heat obtd. by bringing the liquefied fuel gas into catalyst combustion for an iron. CONSTITUTION:The gaseous fuel ejected from a fuel tank 3 storing the liquefied gaseous fuel is evaporated by an evaporating device 10 and is ejected from the nozzle 12. The gaseous fuel and air ejected from the nozzle 12 are mixed by a mixer 13 and are supplied to a combustion chamber 18 contg. a catalyst 18a. The gaseous mixture supplied into the combustion chamber 18 is ignited by a firing device 24 and a base 25 of an iron body 1 is heated by the generated combustion heat generated by the combustion using the catalyst. The combustion chamber 18 and the evaporating device 10 are thermally connected by a heat transmission member 23. The heat transmission member 23 is composed of a material having the thermal conductivity lower than the thermal conductivity of the member constituting the combustion chamber 18.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalytic combustion iron that uses heat obtained by catalytically burning liquefied fuel gas to extend wrinkles in clothes and the like.

[0002]

2. Description of the Related Art Conventionally, this type of gas burning iron is
For example, as disclosed in JP-A-62-144697, a fuel tank filled with a fuel composed of a combustible gas such as propane and butane, and a nozzle for ejecting vaporized fuel gas are provided, and the fuel tank and the nozzle are provided. The supply and stop of fuel gas are controlled by a valve provided between the two.

The fuel gas ejected from the nozzle is mixed with air in the mixing device, and catalytic combustion is performed on the catalyst installed in the combustion chamber to generate combustion heat.
The base was heated by heat conduction from the combustion chamber to smooth the wrinkles of the clothes.

[0004]

However, in the conventional structure as described above, the liquefied fuel gas is separated into the gas phase and the liquid phase in the fuel tank, and the liquid phase is separated from the gas phase. Since it has a physical property that heat of vaporization is taken from the vaporizer when vaporizing, the phenomenon occurs that the temperature inside the fuel tank decreases if the vaporized fuel gas is continuously ejected for a long time.

As a result, the heat capacity becomes insufficient, and the liquefied fuel gas is not vaporized and is ejected from the nozzle in a liquid mixed state, so that the fuel gas and air cannot be mixed well,
There was a problem that combustion stopped halfway.

On the other hand, when heat is applied to the fuel tank to make up for such a shortage of heat capacity, the liquefied fuel gas stored in this fuel tank is heated more than necessary, and the pressure of the fuel gas rises excessively. There was a problem.

Further, when liquid fuel gas that does not vaporize accumulates near the nozzle, the gas mixed with the liquid is ejected from the nozzle, so that the fuel gas and air cannot be mixed well, and such a situation occurs during ignition. There was a problem that ignition did not occur when the fuel gas mixed with the liquid was ejected.

Further, when used for a long time, the heat generated from the combustion chamber is trapped inside the iron body and becomes high in temperature, so that the temperature of the internal air rises and the volume expands. As a result, the mixing ratio of fuel gas and air becomes lower as the temperature rises, and the fuel gas does not completely burn, so that some of the fuel gas is released into the atmosphere without burning and a loss occurs in the fuel gas. was there.

Further, since the pressure of the fuel gas greatly changes due to the influence of the ambient temperature, the internal pressure of the fuel tank increases and the fuel tank expands when left in a high temperature place. There was a problem that the outer shell of the iron body was deformed.

In view of the above, the present invention solves the above-mentioned conventional problems. It is a first object of the present invention to obtain a catalytic combustion iron which continuously ejects a stable vaporized fuel gas from a nozzle to maintain a good combustion state. The purpose is.

A second object is to obtain a catalytic combustion iron which can always mix the fuel gas and the air in the optimum ratio for complete combustion.

A third object is to obtain a catalytic combustion iron which can surely ignite at the start of use.

A fourth object is to obtain a catalytic combustion iron in which the outer shell of the iron body is not deformed even when left under high temperature for a long time.

[0014]

In order to achieve the first object, the present invention provides an iron body having a handle,
A fuel tank for storing the liquefied fuel gas provided in the iron body, a vaporizer for vaporizing the liquefied fuel gas ejected from the fuel tank, a valve for opening and closing the vaporized fuel gas, and a jet for the vaporized fuel gas. A nozzle, a mixing device that mixes fuel gas and air ejected from the nozzle, a combustion chamber that is provided on the downstream side of the mixing device and has a catalyst inside, and a mixed gas that is supplied from the mixing device. An ignition device for igniting a fuel, a base heated by combustion heat from the catalyst, and a heat transfer member thermally connecting the combustion chamber and the vaporizer, and the heat transfer member is a member forming the combustion chamber. The first means for solving the problem is to use a material having a lower thermal conductivity.

A second problem solving means is that the vaporizer of the first problem solving means is built in the opening / closing valve, and the opening / closing valve and the combustion chamber are thermally connected by a heat transfer member.

In addition to the first means for solving the above problems,
It has a water tank for storing water and a vaporization chamber for vaporizing the water supplied from this water tank by the heat of combustion by the catalyst,
A third means for solving the problem is to connect the vaporization chamber and the vaporizer with a heat transfer member.

In order to achieve the second object,
An iron body having a handle, a fuel tank provided in the iron body for storing liquefied fuel gas, an opening / closing valve having a vaporization device for liquefied fuel gas ejected from the fuel tank, and ejecting vaporized liquefied fuel gas A nozzle, a mixing device that mixes fuel gas and air ejected from the nozzle, a combustion chamber that is provided on the downstream side of the mixing device and has a catalyst inside, and a mixed gas that is supplied from the mixing device. A fourth problem is that an ignition device for igniting a fuel cell and a base heated by combustion heat of the catalyst are provided, and an air passage communicating with an intake portion of the mixing device is formed on an outer surface portion of the fuel tank. As a means.

In addition to the fourth means for solving the above problems,
A fifth problem solving means is that the iron body is provided with an opening communicating with the ventilation passage, and the fuel tank is exposed to the opening and the fuel tank is built in the iron body.

Further, in order to achieve the third object,
An iron main body having a handle, a fuel tank provided in the iron main body for storing the liquefied fuel gas injected from the injection part, and an opening / closing valve incorporating a vaporizer for the liquefied fuel gas ejected from the fuel tank. A nozzle for ejecting vaporized liquefied fuel gas, a mixing device for mixing the fuel gas ejected from the nozzle with air, a combustion chamber provided downstream of the mixing device and having a catalyst incorporated therein, A sixth object is to have a base heated by the heat of combustion by the catalyst, and to set the communication part between the vaporizer and the fuel tank above the maximum storage amount of the liquefied fuel gas defined by the injection part. It is a solution.

In addition to the sixth means for solving the above problems,
A seventh aspect of the invention is to form a communication part by providing a partition wall between the injection part of the fuel tank and the vaporizer.

Further, in order to achieve the above-mentioned fourth object, an iron body having a handle, a fuel tank which is provided in the iron body and which stores a liquefied fuel gas composed of a plurality of members, and An on-off valve with a built-in vaporizer for liquefied fuel gas ejected from the fuel tank,
A nozzle for ejecting vaporized liquefied fuel gas, and a mixing device for mixing the fuel gas and air ejected from this nozzle,
The fuel tank is provided with a combustion chamber provided downstream of the mixing device and containing a catalyst therein, and a base heated by combustion heat of the catalyst. The eighth problem-solving means is that the inside is connected by the second means while being connected.

[0022]

According to the first means for solving the above problems, the present invention provides:
Since the heat transfer member that thermally connects the combustion chamber and the vaporizer is provided, the heat capacity of the vaporizer is increased at the beginning of combustion to prevent the non-vaporized fuel gas from being ejected from the nozzle, and the vaporizer. You will be able to prevent the freezing of.

Further, since the high-temperature combustion heat is supplied from the combustion chamber to the vaporizer at the time of temperature saturation, the liquefied fuel gas ejected from the fuel tank can be completely vaporized, and the vaporized gas is always ejected from the nozzle, which is excellent. It becomes possible to supply various mixed gases to the combustion chamber.

Further, since the heat transfer member is made of a material having a lower heat conduction than that of the member forming the combustion chamber, the amount of heat transferred to the vaporizer can be appropriately supplied, and the vaporized gas can be constantly stabilized from the nozzle. Thus, it becomes possible to eject the gas and continue the catalytic combustion satisfactorily.

According to the second means for solving the problems, since the opening / closing valve having the built-in vaporizer and the heat transfer member for thermally connecting the combustion chamber are provided, the valve for opening / closing the fuel gas as well as the vaporizer is provided. The temperature can be kept high, and the vaporized gas can be constantly ejected from the nozzle to supply a good mixed gas to the combustion chamber.

According to the third means for solving the problems, the vaporization chamber is heated by the heat of combustion by the catalyst, and the vaporization device can be kept at a high temperature by connecting the vaporization chamber and the vaporization device with the heat transfer member. Therefore, the vaporized gas can be constantly ejected from the nozzle in a stable manner, and a good mixed gas can be supplied to the combustion chamber.

Further, according to the fourth means for solving the problems, since the ventilation passage communicating with the intake portion of the mixing device for mixing the fuel gas and the air is provided on the outer surface portion of the fuel tank, the air outside the iron body is exchanged with the fuel gas. It can be used for mixing, and the fuel gas and air can always be mixed in a ratio required for complete combustion.

Further, according to the fifth problem solving means, when the combustion is continued for a long time, the fuel tank is heated to a high temperature,
The pressure of the liquefied fuel gas stored inside also rises remarkably, but by installing a fuel tank in the air passage,
It becomes possible to circulate the outside air having a low temperature along the wall surface of the fuel tank. Therefore, the fuel tank can be cooled by the outside air, and the excessive increase in the internal pressure of the fuel tank can be prevented.

Further, according to the sixth means for solving the problems, the communication part between the vaporizer and the fuel tank is set to be higher than the maximum storage amount of the liquefied fuel gas defined by the injection part of the fuel tank. The vaporizer will not be soaked in the liquefied fuel gas even if the posture is changed to the installed state such as during use and at rest, and the vaporized gas is ejected from the nozzle even when the temperature of the vaporizer is low such as during ignition. By doing so, the ignition is surely performed.

According to the seventh means for solving the problems, since the partition is provided between the fuel tank injecting part and the vaporizing device so as to communicate with each other, even when the iron body is installed with the rear part of the iron body down during a rest period during use, Since the vaporizer is located above the liquid surface of the liquefied fuel gas and does not submerge, the filling amount of the liquefied fuel gas in the fuel tank can be increased.

Further, according to the eighth problem solving means, the peripheral portion of the fuel tank composed of a plurality of members is connected by the first means, and the inner side thereof is connected by the second means.
The strength of the fuel tank can be increased, and the durability at high temperatures can be increased.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the catalytic combustion iron of the present invention will be described below with reference to FIGS. In the figure,
An iron body 1 has a handle 2 at the top and a fuel tank 3 at the rear. The fuel tank 3 is composed of a fuel tank body 3a and a fuel tank lid 3b.

The fuel tank body 3a and the fuel tank lid 3
In b, the outer peripheral joint portion is hermetically joined by a first means A such as heat welding or ultrasonic welding, and the central portion thereof is a second means B formed by tightening with a bolt 4 and a nut 5. Are joined by.

The fuel tank 3 has an injection part 6 for injecting a liquefied fuel gas such as butane or isobutane, and a partition 8 having a communication part 7 formed therein. Communication part 7
Is set above the maximum storage amount of the liquefied fuel gas defined by the injection part 6.

The opening / closing valve 9 has a vaporizer 10 for vaporizing the liquefied fuel gas jetted from the fuel tank 3, a valve 11 for opening / closing the vaporized fuel gas, and a nozzle 12 for jetting the vaporized fuel gas. The liquefied fuel gas discharged from the fuel tank 3 through the communication portion 7 is vaporized by the vaporization device 10, and the vaporized fuel gas is discharged from the nozzle 12 through the valve 11. The vaporizer 10 has an injection part 6
It is set above the maximum storage amount of liquefied fuel gas specified by the above.

The mixing device 13 uniformly mixes the fuel gas with the air drawn in from the intake portion 14 by attracting the fuel gas flow blown out from the nozzle 12. A vent 16 for sucking air from the outside is formed in the rear gap between the fuel tank 3 and the main body cover 15, and the air is passed through the vent passage 17
And is guided to the intake section 14.

The combustion chamber 18 is composed of a first combustion chamber constituting body 19 and a second combustion chamber constituting body 20 which are made of aluminum, and the inner wall surface thereof is made of a thin metal plate such as platinum, palladium or the like. Porous catalyst layer 1 carrying the above noble metal catalyst
8a is formed. A vaporization chamber lid 21 is provided on the upper surface of the second combustion chamber constituting body 20, and the vaporization chamber 22 is provided on the upper surface side of the combustion chamber 18.
Is formed.

The heat transfer member 23 is made of a material having a lower heat transfer property than aluminum such as stainless steel or iron, and thermally connects the combustion chamber 18 and the on-off valve 9 via the vaporization chamber lid 21. The vaporization chamber 22 and the opening / closing valve 9 are thermally connected, and are thermally connected to the vaporization device 10 in the opening / closing valve 9.

The ignition device 24 includes the catalyst layer 18 of the combustion chamber 18.
It is provided in close proximity to a, and a piezoelectric element (not shown) causes a spark to be generated in the electrode portion so as to ignite the mixed gas supplied from the mixing device 13. In addition to such a configuration, the ignition device may have a configuration in which, for example, a dry battery or the like is used to cause the electric heater to glow red to ignite the mixed gas.

The base 25 is formed on the lower surface of the combustion chamber 18, and is formed with an exhaust passage 26 that is heated by the combustion heat of the catalyst layer 18a and discharges the combustion gas burned in the combustion chamber 18. Exhaust port 2 provided in the gap
Combustion gas is released from 7 to the atmosphere.

The vaporization chamber 22 is connected to a water tank 29 via a water supply passage 28, and opens / closes an opening / closing device 30 to supply the water in the water tank 29 to the vaporization chamber 22 for vaporization. The steam passage 31 guides the steam generated in the vaporization chamber 22 to a large number of steam ports 32 provided on the lower surface of the base 25, and the steam is discharged to the atmosphere through the steam ports 32.

The opening / closing device 30 is operated by operating the operating portion 33 provided on the handle 2 in the direction of the arrow C to move the wire 3
4 is pulled and opened by displacing the lever 35 upward in the figure, and the water in the water tank 29 is supplied to the vaporization chamber 22 and vaporized.

The operation of the above structure will be described below.
First, the valve 11 is opened, the liquefied fuel gas in the fuel tank 3 is vaporized by the vaporizer 10, and the nozzle 12 is used to mix the liquefied fuel gas.
3, the air is drawn into the mixing device 13 by the attraction of the gas flow blown out from the nozzle 12, the air and the fuel gas are uniformly mixed in the mixing device 13, and the mixed gas is supplied to the combustion chamber 18.

After that, when a spark is generated in the electrode portion by a piezoelectric element (not shown) and the mixed gas supplied from the mixing device 13 and close to the catalyst layer 18a is ignited and the catalyst is heated to the activation temperature, the catalyst layer An exothermic reaction is initiated on 18a.

This exothermic reaction gradually burns and spreads throughout the combustion chamber 18, heats the vaporization chamber 22 and the base 25 by heat conduction from the combustion chamber 18, and the combustion gas passes from the combustion chamber 18 through the exhaust passage 26 to the exhaust port. It is released from 27 into the atmosphere.

When the vaporization chamber 22 is heated to a temperature suitable for vaporizing water, the switchgear 30 is pulled up to supply the water in the water tank 29 to the vaporization chamber 22 via the water supply passage 28. Can generate steam.

Next, the operation of thermally connecting the combustion chamber 18 and the vaporization device 10 by the heat transfer member 23 made of a material having a lower thermal conductivity than the members forming the combustion chamber 18 will be described.

Normally, when igniting and continuing combustion, a large amount of heat of vaporization is required for the vaporizer 10 when the fuel gas is ejected from the nozzle 12, but the vaporizer 10 uses the heat transfer member 23 to heat the combustion chamber. Because it is thermally connected to 18,
The heat capacity is increased and the initial heat of vaporization is secured. Further, the heat from the combustion chamber 18 is transferred to the vaporizer 10 via the heat transfer member 23 even during the continuous combustion.

On the other hand, a vaporization device 1 using a large amount of heat of vaporization
It is a well-known fact that it is necessary to prevent a temperature decrease of 0, but if the temperature of the combustion chamber 18 is directly transmitted to the vaporization device 10, the heat from the combustion chamber 18 heated to about 200 ° C. is transferred to the vaporization device 10. Since it is transmitted to the vaporizer 10 via the member 23, the fuel tank 3 is also heated to a temperature close to it.
Therefore, the pressure of the fuel gas increases significantly and the nozzle 1
The amount of fuel gas ejected from No. 2 increases with time as the temperature of the fuel tank 3 rises, so that a stable supply of fuel gas cannot be achieved.

As a specific preferred example of the present invention, the combustion chamber 1
When 8 is made of aluminum and the material of the heat transfer member 23 is stainless, the temperature of the combustion chamber 18 is transferred to the vaporizer 10 as it is because the thermal conductivity of stainless is about 1/10 of that of aluminum. In addition, the temperature gradient of the vaporizer 10 is reduced to about 80 ° C. by adding the temperature gradient depending on the distance from the combustion chamber 18 to the vaporizer 10.

Therefore, the temperature in the fuel tank 3 can be maintained at a temperature higher than the ambient temperature by a predetermined temperature due to the heat loss due to the heat of vaporization of the fuel gas and the heat transferred from the combustion chamber 18. Does not rise excessively, and vaporized gas fuel is constantly ejected stably from the nozzle 12,
The catalytic combustion can be favorably continued.

Even if the heat transfer member 23 and the combustion chamber 18 are formed separately and a low heat conductive material such as resin, rubber or ceramic is interposed in the connecting portion, the same effect can be obtained. Even if the combustion chamber 18 and the heat transfer member 23 are made of the same material, the same effect can be obtained by providing a slight gap on the contact surface. This is effective even if a similar configuration is adopted between any parts between the vaporizer 10 and the combustion chamber 18.

Further, the on-off valve 9 having the built-in vaporizer 10 and the combustion chamber 18 are thermally connected by the heat transfer member 23, so that not only the vaporizer 10 but also the valve 11 and the nozzle 12 for opening and closing the fuel gas are opened. The temperature can be raised, and the vaporized gas can be constantly ejected from the nozzle 12 to supply a good mixed gas to the combustion chamber 18.

Next, the operation of thermally connecting the vaporizing chamber 22 and the vaporizing device 10 with the heat transfer member 23 will be described.
In an iron having a steam generator, a vaporization chamber 2
2 is generally heated to about 160 ° C., and by thermally connecting the heat transfer member 23 to the vaporization chamber 22, even if the heat transfer member 23 is made of aluminum, the vaporizer 10
The temperature is about 80 ° C. due to the heat conduction from the heat transfer member 23, and the same effect as above can be obtained.

Next, the mixing device 1 is attached to the outer surface of the fuel tank 3.
The operation of forming the ventilation passage 17 communicating with the intake portion 14 of No. 3 will be described. When burning the fuel gas, the amount of oxygen required to completely burn the fuel gas is isobutane: air = 1: 30.94 (volume ratio) at room temperature 20 ° C. when the fuel gas is isobutane gas. The volume of air in which the fuel gas is entrained in the device 13 is determined by the amount of the fuel gas ejected from the nozzle 12 and the shape and size of the mixing device 13.

On the other hand, the air entrained in the mixing device 13 at the time of ignition is at ambient temperature, but the air entrained in the mixing device 13 at the time of combustion is heated by the radiant heat from the combustion chamber 18 and has a high volume. It is expanding.

When the volume of air expands, the density of oxygen in the air becomes low, and even if the same volume of air as at low temperature is mixed, the substantial mixing ratio of oxygen and combustion gas becomes low, and some fuel Since the gas is released to the atmosphere without being burned, the loss of fuel becomes significant. Further, the release of unburned gas to the atmosphere is not preferable in terms of environmental protection.

Therefore, by forming an air passage 17 on the outer surface of the fuel tank 3 that connects the air intake port 16 and the air intake portion 14 of the mixing device 13, air of low temperature is supplied to the mixing device 13. Since the fuel gas and oxygen in the air are mixed in an ideal ratio as set in the initial setting, a mixed gas in a good state for combustion is obtained, and the fuel gas is completely burned to eliminate fuel loss. Further, unburned fuel gas can be completely decomposed into carbon dioxide and water and released into the atmosphere.

Next, the iron body 1 is provided with an opening 16 communicating with the ventilation passage 17, and the fuel tank 3 is provided in the opening 16.
The operation of incorporating the fuel tank 3 into the iron main body 1 will be described below. Since the air having a low temperature that has entered through the opening 16 is supplied to the mixing device 13, the fuel gas and the air are set as initially set. Since the oxygen in the mixture is mixed at an ideal ratio, a mixed gas in a good combustion state can be obtained, and the fuel gas can be completely burned.

Further, when the combustion is continued for a long time, the heat radiated from the combustion chamber 18 stays inside the main body cover 15 and becomes high in temperature. Therefore, the temperature of the fuel tank 3 also becomes high, and the pressure of the liquefied fuel gas inside rises remarkably. To do. Therefore, by installing the fuel tank 3 in the air passage, the air having a low temperature is circulated around the fuel tank 3, so that the fuel tank 3 is cooled.

Further, the air passing through the outer wall surface of the fuel tank 3 is entrained at the flow velocity of the fuel gas in the mixing device 13 and taken into the combustion chamber 18, so that the flow velocity of the air passing through the ventilation passage 17 is accelerated, and It is possible to enhance the cooling effect of the tank 3 and prevent the internal pressure of the fuel tank 3 from rising excessively.

Next, the effect of setting the communication portion 7 between the vaporizer 10 and the fuel tank 3 above the maximum storage amount of the liquefied fuel gas defined by the injection portion 6 will be described.
In the catalytic combustion iron, the liquefied fuel gas is completely vaporized because the vaporizer 10 becomes hot during combustion, and the vaporized gas is ejected from the nozzle 12 to perform good combustion. When liquefied fuel gas soaks, vaporizer 1
Since the heat capacity of 0 is insufficient, the liquefied gas is ejected from the nozzle 12 without being vaporized and does not ignite.

The maximum injection amount of the liquefied gas is the injection part 6
It is well known that the height is limited. Therefore, with the hanging surface of the base 25 facing downward,
The liquid level of the fuel gas is at the position shown in FIG. 1 (A), and the fuel tank 3 can be used at a short rest during ironing work.
With the iron body 1 installed with the iron down, the position is as shown in FIG.

Therefore, the vaporizer 1 has a content so that the liquefied gas does not soak into the vaporizer 10 when unburned.
By setting the communication port 7 between 0 and the fuel tank 3 and setting the height of the inlet 6, the vaporizer 10 will not be submerged in the liquefied fuel gas in the normally used posture, and the fuel gas It does not gush as it is. As a result, even when the temperature of the vaporization device 10 is low, such as during ignition, the vaporized gas can be ejected from the nozzle 12 for reliable ignition.

Further, by providing a partition wall 8 between the injection portion 6 of the fuel tank 3 and the vaporizer 10, the fuel tank 3
With the iron body 1 installed with the bottom facing down, the vaporizer 10 is not submerged in the liquefied gas, so that the filling amount of the fuel gas into the fuel tank 3 can be increased.

Therefore, the time for which the catalytic combustion is continued can be lengthened, and the time for which the iron can be continuously used can be lengthened. Needless to say, the same effect can be obtained by installing the vaporizer 10 in the communication section 7.

Next, the fuel tank 3 is the fuel tank body 3a.
And a fuel tank lid 3b, the peripheral portions of the fuel tank body 3a and the fuel tank lid 3b are joined by a first means A such as heat welding or ultrasonic welding, and the central portion thereof is bolted. 4 and the nut 5, the operation by connecting with the 2nd means B by tightening is demonstrated.

The pressure of the liquefied fuel gas increases as the temperature increases. Since the catalytic burn iron does not have a cord, it is easy to carry and is convenient for carrying around when traveling. As a result, they may be exposed to hot places for a long time.

For example, if left in a car for a long time in the summer, the temperature of the iron body 1 is expected to exceed 100 ° C. When isobutane is used as the fuel gas, the pressure of this isobutane is about 20 kg per unit area (square centimeter) at 100 ° C. Therefore, the internal pressure of the fuel tank 3 rises and the fuel tank 3 expands and deforms.

Therefore, the fuel tank 3 is replaced by the fuel tank main body 3
a and a fuel tank lid 3b, the peripheral portion of which is hermetically coupled by a first means A such as heat welding or ultrasonic welding. Further, the central portion of the fuel tank 3 is a bolt 4 and a nut. The fuel tank 3 is not deformed even if it is subjected to the thermal expansion of the fuel gas by connecting with 5 and adding a reinforcing effect.

In addition to the steam iron shown in the above-mentioned embodiment, the catalytic combustion iron of the present invention is a dry iron for removing wrinkles of clothes only by heat without generating steam, or a steam iron without pressing clothes. Needless to say, the present invention can be applied to many heating devices such as a steamer that is finished only by itself, and a ski iron used when wax is applied to a ski.

[0072]

As described above, in the catalytic combustion iron of the present invention, the heat transfer member for thermally connecting the combustion chamber and the vaporizer is made of a material having a lower heat conduction than the member forming the combustion chamber. The heat capacity of the vaporizer can be increased at the beginning of combustion. Therefore, it is possible to prevent the non-vaporized fuel gas from being jetted from the nozzle and freezing the vaporizer, thereby obtaining a good vaporized fuel gas.

Further, when the temperature is saturated, the vaporizer is heated to a temperature higher than that of the combustion chamber, so that the vaporized gas can be constantly ejected from the nozzle to supply a good mixed gas to the combustion chamber. Further, since the heat transfer member is made of a material having a lower heat conduction than that of the member forming the combustion chamber, it is possible to properly limit the amount of heat transferred to the vaporizer, and to constantly eject the vaporized gas stably for good catalytic combustion. Can continue.

Further, by incorporating the vaporizer in the open / close valve and thermally connecting the open / close valve and the combustion chamber by the heat transfer member, not only the vaporizer but also the valve for opening / closing the fuel gas can be heated to a high temperature, The vaporized gas can be constantly ejected from the nozzle to supply a good mixed gas to the combustion chamber.

Further, the water tank for storing water and the vaporization chamber for vaporizing the water supplied from the water tank by the heat of combustion of the catalyst are provided, and the vaporization chamber and the vaporizer are connected by the heat transfer member. , The vaporization chamber is heated by the heat of combustion from the catalyst.By connecting the vaporization chamber and the vaporization device with a heat transfer member, the vaporization device can be heated to a high temperature, and the vaporized gas is constantly ejected from the nozzle to produce a good mixed gas. Can be supplied to the combustion chamber.

Further, since the air passage communicating with the intake portion of the mixing device for mixing the fuel gas and the air is provided on the outer surface of the fuel tank, the air at the ambient temperature is constantly supplied to the mixing device, and the initial setting is made. The fuel gas and oxygen in the air are mixed at a mixing ratio of complete combustion as described above. As a result, the fuel gas is completely burned, and energy efficiency can be improved.

Further, the iron body is provided with an opening communicating with the ventilation passage, and the fuel tank is faced to this opening and the fuel tank is built in the iron body, whereby the air outside the iron body is exchanged with the fuel gas. It can be used for mixing, and the fuel gas and air can always be mixed in an optimum ratio, and the fuel gas can be completely burned.

Further, since the iron body is provided with an opening communicating with the ventilation passage and the fuel tank is faced to this opening and the fuel tank is built in the iron body, the outside air of low temperature taken in from the opening is provided. Since it can be supplied to the mixing device, the fuel gas and the oxygen in the air can be mixed in an ideal ratio as in the initial setting, and the optimum mixed gas for combustion can be obtained to completely burn the fuel gas. it can.

Further, the communication part between the vaporizer and the fuel tank is set above the maximum storage amount of the liquefied fuel gas defined by the injection part of the fuel tank, and a partition is provided between the injection part of the fuel tank and the vaporizer. Since the fuel cells are provided and communicated with each other, the vaporized gas can be ejected from the nozzle even when the temperature of the vaporization device is low such as at the time of ignition, and the ignition can be reliably performed.

Further, by connecting the peripheral portion of the fuel tank composed of a plurality of members by the first means and connecting the inner side by the second means, the strength of the fuel tank is increased and the fuel tank is left under high temperature. A strong fuel tank that is not deformed even if it is subjected can be obtained and can be compactly incorporated in the iron body.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a catalytic combustion iron of the present invention.

FIG. 2 is an enlarged sectional view of a main part of the catalytic combustion iron.

FIG. 3 is an enlarged sectional view of an opening / closing valve of the catalytic combustion iron.

FIG. 4 is an enlarged sectional view taken along line AA of FIG.

[Explanation of symbols]

 1 Iron Main Body 2 Handle 3 Fuel Tank 10 Vaporizer 11 Valve 12 Nozzle 13 Mixer 18 Combustion Chamber 23 Heat Transfer Member 24 Ignition Device 25 Base

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Tomoaki Kitano 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Masato Hosaka, 1006 Kadoma, Kadoma City, Osaka Matsushita Electric Industrial Co., Ltd. 72) Inventor Akira Maenishi 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (8)

[Claims] 1. An iron main body having a handle, a fuel tank provided in the iron main body for storing liquefied fuel gas, a vaporizer for vaporizing the liquefied fuel gas ejected from the fuel tank, and opening and closing the vaporized fuel gas. Valve to
A nozzle for ejecting the vaporized fuel gas, and a mixing device for mixing the fuel gas and air ejected from the nozzle,
A combustion chamber that is provided on the downstream side of the mixing device and that has a catalyst inside, an ignition device that ignites the mixed gas supplied from the mixing device, and a base that is heated by the heat of combustion by the catalyst, A catalytic combustion iron, comprising: a heat transfer member that thermally connects the combustion chamber and a vaporizer, wherein the heat transfer member is made of a material having a lower thermal conductivity than a member forming the combustion chamber. 2. The catalytic combustion iron according to claim 1, wherein the vaporizer is built in the opening / closing valve, and the opening / closing valve and the combustion chamber are thermally connected by a heat transfer member. 3. A water tank for storing water, and a vaporization chamber for vaporizing the water supplied from the water tank by the heat of combustion of a catalyst, wherein the vaporization chamber and the vaporizer are connected by a heat transfer member. 1. The catalytic combustion iron according to 1. 4. An iron body having a handle, a fuel tank provided on the iron body for storing liquefied fuel gas, an opening / closing valve having a vaporization device for liquefied fuel gas ejected from the fuel tank, and vaporized liquefaction. A nozzle for ejecting the fuel gas, a mixing device for mixing the fuel gas ejected from the nozzle and the air, a combustion chamber provided on the downstream side of the mixing device and having a catalyst incorporated therein, and the mixing device. An ignition device for igniting the supplied mixed gas;
A catalytic combustion iron comprising: a base heated by combustion heat of the catalyst; and an air passage communicating with an intake portion of the mixing device formed on an outer surface of the fuel tank. 5. The catalytic combustion iron according to claim 4, wherein the iron body is provided with an opening communicating with the air passage, and the fuel tank is faced to the opening and the fuel tank is built in the iron body. 6. An iron main body having a handle, a fuel tank provided in the iron main body for storing liquefied fuel gas injected from an injection part, and a vaporizer for liquefied fuel gas ejected from the fuel tank. A built-in on-off valve, a nozzle for ejecting vaporized liquefied fuel gas, a mixing device for mixing the fuel gas ejected from this nozzle and air, and a catalyst provided inside the mixing device provided on the downstream side of the mixing device. A combustion chamber and a base heated by the heat of combustion of the catalyst, and the communication part between the vaporizer and the fuel tank is set above the maximum storage amount of the liquefied fuel gas defined by the injection part. Burning iron. 7. The catalytic combustion iron according to claim 6, wherein a partition is provided between the injection part of the fuel tank and the vaporizer to form a communication part. 8. An iron main body having a handle, a fuel tank provided on the iron main body and configured to store liquefied fuel gas, and a vaporizer for liquefied fuel gas ejected from the fuel tank. An on-off valve with a built-in valve and a nozzle for ejecting vaporized liquefied fuel gas,
A mixing device for mixing the fuel gas ejected from the nozzle with air, a combustion chamber provided downstream of the mixing device and containing a catalyst therein, and a base heated by combustion heat of the catalyst. The fuel tank is a catalytic combustion iron in which the peripheral portion of the fuel tank is connected by the first means and the inner side of the fuel tank is connected by the second means.