JP2000088215A - Catalytic combustor - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To improve the ignition performance and combustion performance by changing the amount of air sucked between ignition and combustion of a catalyst. A combustion unit includes a combustion catalyst, a combustion chamber, a gas ejection nozzle, an air suction ejector, an ignition device, and an air suction port.
2 is an on-off valve 19 for controlling fuel supply and the fuel tank 2
The air suction port 18 is composed of an ignition air suction port 21 and a steady air suction port 22. The steady air suction port 22 is provided with an opening / closing shutter 23, and the ignition air suction port is provided. The opening area of the port 21 is smaller than the opening area of the steady-state air suction port 22, and the ignition-time air suction port 2 is used at the time of ignition.
Air is introduced only from the air inlet 1 and air is also introduced from the air suction port 22 in the steady state during combustion, so that the amount of air sucked between ignition and combustion is changed to improve ignition performance and combustion performance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a catalytic combustor for heating a gas as fuel by catalytic combustion.

[0002]

2. Description of the Related Art A conventional catalytic combustor, which is a heating device to which catalytic combustion is applied, generally has a configuration as shown in FIG.
This will be described with reference to FIG.

A fuel gas cylinder 103 is mounted on a fuel section 102 located at the bottom of a case body 101. The fuel gas cylinder 103 is connected to a gas projecting nozzle 10 via a valve.
4 and a mixing tube 105 through which external air is introduced is connected to the gas projecting nozzle 104 to form a mixed gas. The upper end of the mixing pipe 105 is connected to a combustion section 106 located above the fuel section 102 to introduce a mixed gas. Further, an oxidizing catalyst 107 having air permeability is provided so as to surround the ejection section at the upper end of the mixing pipe 105, and an ignition heater 108 is provided in the ejection path of the mixed gas. A heat exchange plate 109 is provided on the outer periphery of the oxidation catalyst 107, and a heating unit 111 is formed on the upper surface of the heat exchange plate 109 by contacting the bottom of a container 110. A reflector 112 is provided between the combustion unit 106 and the fuel unit 102.
Are divided by

Next, the operation will be described. The fuel gas in the fuel gas cylinder 103 is supplied to the gas projecting nozzle 104, and then a mixed gas formed by mixing with air in the mixing pipe 105 is ejected and supplied to the oxidation catalyst 107. Then, the mixed gas burning based on the initial ignition by the ignition heater 108 starts catalytic combustion by the action of the oxidation catalyst 6, and
The heat of combustion generated by the catalytic combustion efficiently exchanges heat with the water stored in the container 2 via the heat exchange plate 109 to heat or keep the temperature of the water.

[0005]

However, in the conventional catalytic combustor, the amount of air introduced from the mixing pipe 105 to form a mixed gas depends on the time of ignition by the ignition heater 108 and the catalytic combustion by the oxidizing catalyst 107. When the priority is given to ignition performance, the amount of air at the time of catalytic combustion becomes insufficient and incomplete combustion occurs, and when the priority is given to combustion performance, the amount of air becomes excessive and ignition becomes difficult. Had issues.

The present invention solves such a conventional problem by improving the ignition performance and combustion performance by changing the amount of air at the time of ignition and at the time of catalytic combustion. It is simple and inexpensive to improve the ignition performance, and the air volume at the time of ignition is changed to the air volume at the time of catalytic combustion to improve the combustion performance. Improving operability by automatically changing the amount of air during combustion to improve operability, and instantaneously changing the amount of air during ignition to the amount of air during catalytic combustion, resulting in incomplete combustion It is another object of the present invention to provide a catalytic combustor in which the time of the combustion is shortened and the combustion efficiency is maintained even in an environment where the temperature of the combustion air is low by preheating the combustion air.

[0007]

In order to solve the above problems, the present invention provides an air suction port for ignition and an air suction port for steady combustion as suction ports for air mixed with fuel gas. The air suction port at the time of steady combustion has an opening area larger than the opening area of the air suction port at the time of ignition and is openable and closable. The amount is going to be introduced.

[0008] The amount of air to be introduced can be changed between the time of ignition with a small amount of suitable air and the time of steady combustion requiring a large amount of appropriate air to improve ignition performance and catalytic combustion performance.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be embodied by the constitutions described in the respective claims, and the embodiments will be described in detail below.

As described above, the ignition air suction port and the steady-state air suction port serve as suction ports for air mixed with fuel gas from the fuel section and supplied to the combustion section having the combustion catalyst. The opening area of the ignition-time air suction port is smaller than the opening area of the steady-state air suction port, and the steady-state air suction port is freely openable and closable.

In this manner, the air suction port for steady combustion is closed at the time of ignition with a small amount of suitable air, and air is introduced from the ignition air suction port with a small opening area. In the case of steady combustion requiring a large amount of suitable air, the ignition performance can be improved, and the steady-state combustion air suction port having a large opening area is opened to open the air suction port and the ignition air suction port. Since air is introduced from both, catalytic combustion performance can be improved.

Further, as described in claim 2, a combustion section and a fuel section are provided, and the combustion section includes a combustion catalyst, a combustion chamber, a gas ejection nozzle, an air suction ejector, an air suction port,
And the ignition device, the fuel unit is configured by an on-off valve and a fuel tank that controls the supply of fuel, the air suction port is configured by an ignition air suction port and a steady time air suction port, The stationary air suction port is provided with an opening / closing shutter, and the opening area of the ignition air suction port is smaller than the opening area of the stationary air suction port. Since the amount of air introduced between the time of ignition and the time of catalytic combustion is changed, the ignition performance and catalytic combustion performance can be improved.

Further, as described in claim 3, a combustion section and a fuel section are provided, and the combustion section includes a combustion catalyst, a combustion chamber, a gas ejection nozzle, an air suction ejector, an air suction port,
And an ignition device, wherein the fuel section comprises an opening / closing valve for controlling fuel supply and a fuel tank, and an opening / closing shutter is provided at the air suction opening, and the opening / closing opening of the hollow suction opening is provided at the opening / closing shutter. A through hole smaller than the area is provided. The through-hole acting as an air suction port at the time of ignition is not provided in an air suction port in which hole processing is difficult, but is provided by performing hole processing in an easily opened / closed shutter.
It is easy to optimize the amount of air at the time of ignition, and the ignition performance can be improved at low cost.

Further, as described in claim 4, a combustion section and a fuel section are provided, and the combustion section includes a combustion catalyst, a combustion chamber, a gas ejection nozzle, an air suction ejector, an air suction port,
And the ignition device, the fuel unit is configured by an on-off valve and a fuel tank that controls the supply of fuel, the air suction port is configured by an ignition air suction port and a steady time air suction port, An opening / closing shutter is provided at the steady-state air suction port, and a sealing portion is provided at a contact portion between the above-described steady-state air suction port and the opening / closing shutter. Since a sealing portion made of a rubber product or the like is provided at a contact portion between the steady state air suction port and the opening / closing shutter, when the opening / closing shutter is closed at the time of ignition, air from a contact portion between the steady state air suction port and the opening / closing shutter is provided. As a result, the amount of air at the time of ignition is ensured, and ignition performance can be improved.

Further, as described in claim 5, a combustion section and a fuel section are provided, and the combustion section includes a combustion catalyst, a combustion chamber, a gas ejection nozzle, an air suction ejector, an air suction port,
And the ignition device, the fuel unit is configured by an on-off valve and a fuel tank that controls the supply of fuel, the air suction port is configured by an ignition air suction port and a steady time air suction port, An opening / closing shutter is provided at the steady-state air suction port, and an opening / closing mechanism of the opening / closing shutter is linked to a temperature detection mechanism provided in the combustion section. And since the air amount can be changed by detecting the temperature rise due to the heat of catalytic combustion, the change from the air amount at the time of ignition to the air amount at the time of catalytic combustion can be automatically performed, thereby improving the operability. be able to.

According to a sixth aspect of the present invention, the temperature detecting mechanism is constituted by an inverted bimetal. In addition, by configuring the temperature detection mechanism with an inverting bimetal, it is possible to shorten a change time from the air amount at the time of ignition to the air amount at the time of catalytic combustion, and to reduce the time of incomplete combustion. .

Further, as described in claim 7, a combustion section and a fuel section are provided, and the combustion section includes a combustion catalyst, a combustion chamber, a gas ejection nozzle, an air suction ejector, an air suction port, and an ignition device. The fuel section comprises an on-off valve for controlling fuel supply and a fuel tank, and the air suction port comprises an ignition-time air suction port and a steady-state air suction port. An opening / closing shutter is provided in the opening, and the opening / closing mechanism of the opening / closing shutter is linked to a temperature detection mechanism provided in the combustion section, and the steady-state air suction port is opened in a lower portion of the combustion chamber of the combustion section. Further, since the air heated by the catalytic combustion heat is sucked as the combustion air, the heating efficiency can be maintained even in an environment where the temperature is low.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

Embodiment 1 FIGS. 1 and 2 are sectional views of a catalytic combustor according to Embodiment 1 of the present invention. 1 and 2, reference numeral 11 denotes a combustion unit, and reference numeral 12 denotes a fuel unit. The combustion unit 11 includes a combustion catalyst 13, a combustion chamber 14, a gas ejection nozzle 15, an air suction ejector 16, an ignition device 17, and an air suction port 18. The fuel section 12 includes an on-off valve 19 for controlling the supply of gas from the fuel tank 20.
It is composed of The air suction port 18 for supplying air to the air suction ejector 16 includes an ignition air suction port 21 and a stationary air suction port 22.
The opening 2 is opened and closed by an opening / closing shutter 23, and the opening / closing operation of the opening / closing shutter 23 is performed by an operation lever 31. The opening area of the air suction port 21 at the time of ignition is:
It is set smaller than the opening area of the regular air suction port 22. The air suction ejector 16 has a throat 3 formed in a shape that can easily suck air from the air suction port 18 by using kinetic energy of gas ejected from the gas ejection nozzle 15.
0 is provided. Reference numeral 32 denotes a heat transfer plate that covers the upper portion of the combustion catalyst 13, and is made of aluminum or heat-resistant glass having excellent heat conduction characteristics. 33 is a gas ejection nozzle 1
A mixing chamber 34 that functions to completely mix the gas ejected from the nozzle 5 and the air sucked by the air suction ejector 16 is provided.
The internal pressure of the rectification chamber 35 is uniform, and the mixed gas is supplied to the combustion catalyst 13 uniformly. 36 is a piezoelectric element for generating a spark by the ignition device 17, 37 is a flame-extinguishing net for preventing the flame generated in the combustion chamber 14 from going out of the combustion chamber 14, and 38 is a knob for operating the on-off valve 19. .

Next, the operation will be described. When the knob 38 is operated to open the on-off valve 19, the gas in the fuel tank 20 is jetted from the gas jetting nozzle 15, and the jetted gas flows through the throat 30 through the air suction ejector 16. Due to the flow of the jetted gas, the air suction port 1
Air is sucked from 8 and is completely mixed in the mixing chamber 33. At this time, the opening / closing shutter 23 is in the steady state air suction port 22.
Is closed, and air is sucked from the air suction port 21 at the time of ignition with a small opening area (see FIG. 1). The mixed gas enters the rectification chamber 35 through the introduction pipe 34 and is uniformly supplied to the combustion catalyst 13. When the spark is generated from the ignition device 17 by pressing the piezoelectric element 36, the combustion catalyst 1
A flame is formed at the bottom of 3. In this case, since the amount of air in the mixed gas is small, the combustion speed is increased, the flame is attached to the combustion catalyst 13, and the temperature of the combustion catalyst 13 is rapidly increased. When the temperature of the combustion catalyst 13 becomes 200 ° C. or higher, which is the temperature at which the catalyst can be combusted, catalytic combustion starts from the upstream side, and the flame formed below the combustion catalyst 13 eventually disappears. Since the combustion is performed from the upstream side, the temperature of the upper portion of the combustion catalyst 13 increases, and the object to be heated placed via the heat transfer plate 32 can be efficiently heated. When the operation lever 31 is moved upward after confirming the transition to the catalytic combustion (see FIG. 2), the open / close shutter 23 opens the steady-state air suction port 22 so that air is also sucked from the steady-state air suction port 22. As a result, a large amount of air is sucked, and the combustion efficiency and exhaust gas performance can be improved.

(Embodiment 2) FIG. 3 is a sectional view of a catalytic combustor according to Embodiment 2 of the present invention. The same components as those described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

In FIG. 3, reference numeral 24 denotes a through hole provided in the opening / closing shutter 23. The opening area of the through hole 24 is set smaller than the opening area of the steady-state air suction port 22, and the ignition air in the first embodiment is set. It has the same function as the suction port 21. The opening hole 24 is not provided in the air suction port 18 in which it is difficult to form a hole, but is provided by forming a hole in the openable shutter 23 which is easy to form. And the ignition performance can be improved at low cost.

(Embodiment 3) FIG. 4 is a sectional view of a catalytic combustor according to Embodiment 3 of the present invention. The same components as those described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In FIG. 4, reference numeral 25 denotes a sealing portion made of an elastic body such as rubber provided at a contact portion between the air suction port 22 and the opening / closing shutter 23 in a steady state. And
At the time of ignition when the steady-state air suction port 22 is closed by the opening / closing shutter 23, the inflow of air from the contact portion between the steady-state air suction port 22 and the opening / closing shutter 23 is blocked by the sealing portion 25, so that the amount of air at the time of ignition is reduced. The ignition performance can be improved by ensuring the ignition performance.

(Embodiment 4) FIGS. 5 and 6 are sectional views of a catalytic combustor according to Embodiment 4 of the present invention. The same components as those described in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. 5 and 6
In the figure, reference numeral 26 denotes an opening / closing mechanism, which is constituted by pivotally supporting an opening / closing lever 41 on a support base 42 in a swingable manner. Numeral 27 denotes a temperature detecting mechanism of the combustion unit 11, wherein one end of the bimetal 40 is fixed to a heat absorbing piece 39 fixed to the combustion unit 11. An opening / closing shutter 2 is provided at the tip of the opening / closing lever 41.
3 is fixed, and the opening / closing shutter 23 normally closes the opening of the air suction port 22 in a normal state.

The rear end of the opening / closing lever 41 is locked to the free end of the bimetal 40. The opening / closing lever 41
Since the supporting base 42 for pivotally supporting the opening and closing lever 41 is installed at a position close to the bimetal 40, the length of the opening / closing lever 41 divided by the supporting base 42 is shorter on the side of the bimetal 40 than on the side of the opening / closing shutter 23, The opening / closing shutter 23 is moved by increasing the displacement of the shutter 40.

Next, the operation will be described. Since the temperature of the combustion part 11 at the time of ignition has not risen so much, the bimetal 40 hardly displaces, and the opening of the steady-state air suction port 22 is closed by the open / close shutter 23.
An air amount corresponding to combustion at the time of ignition is sucked from the air suction port 21 at the time of ignition (see FIG. 5).

At the time of catalytic combustion, the rear end of the open / close lever 41 locked at the free end is moved downward by the displacement of the bimetal 40 due to the temperature rise of the combustion section 11 (see FIG. 6). As a result, the tip of the opening / closing lever 41 largely moves upward by the leverage principle, and the closing of the opening of the air suction port 22 in the steady state by the opening / closing shutter 23 is opened, so that a large amount of air corresponding to the catalytic combustion is sucked. can do.

Then, the air amount can be automatically and reliably changed from the time of ignition to the time of catalytic combustion.

Embodiment 5 FIGS. 7 and 8 are sectional views of a catalytic combustor according to Embodiment 5 of the present invention. The same components as those described in the first and fourth embodiments are denoted by the same reference numerals, and the description is omitted.
In FIGS. 7 and 8, reference numeral 28 denotes a temperature detecting mechanism of the combustion unit 11, which has a configuration in which an instantaneous inversion type bimetal 43 is fixed between the heat absorbing pieces 39, 39 fixed to the combustion unit 11.
Normally, since the opening / closing shutter 23 closes the opening of the air suction port 22 in the steady state, the rear end of the opening / closing lever 41 is lightly abutted on the instantaneous reversing bimetal 43 or is a slight gap formed? It is in the state of.

Next, the operation will be described. Since the temperature of the combustion part 11 at the time of ignition has not risen so much, the instantaneous reversing type bimetal 43 hardly displaces, and the opening of the steady-state air suction port 22 is closed by the opening / closing shutter 23, and the air at the time of ignition The air amount corresponding to the combustion at the time of ignition is sucked from the suction port 21 (see FIG. 7).

At the time of catalytic combustion, the rear end of the opening / closing lever 41 is moved downward by the instantaneous inversion type bimetal 43 being displaced by the rise in temperature of the combustion section 11 (see FIG. 8).

As a result, the lever 4
Since the front end of the shutter 1 is largely moved upward and the closing of the opening of the air suction port 22 by the opening / closing shutter 23 in the steady state is opened, a large amount of air corresponding to the catalytic combustion can be sucked. Then, the amount of air can be automatically and reliably changed from the time of ignition to the time of catalytic combustion, and the time of incomplete combustion can be shortened because the amount of air to be sucked is switched instantaneously. In addition, when combustion is over,
The opening / closing shutter 23 quickly returns to the position at the time of ignition by the inversion of the instantaneous inversion type bimetal 43, and the steady state air suction port 22
Since the opening of the fuel cell is closed, it is possible to shorten the time required for returning from the amount of air during catalytic combustion to the amount of air during ignition after digestion, and the non-ignition phenomenon does not occur during reuse.

(Embodiment 6) FIG. 9 is a sectional view of a catalytic combustor according to Embodiment 6 of the present invention. The same components as those described in the first and fourth embodiments are denoted by the same reference numerals, and the description is omitted. Example 1
To the fifth embodiment, the air suction port 18, ie, the ignition air suction port 21 and the steady state air suction port 22.
Describes the case where the air outlet is opened to the outside of the catalytic combustor main body. In the present embodiment, at least the steady state air suction port 22 is opened to the lower portion 29 of the combustion chamber 14 of the combustion unit 11. I have. Since the air heated by the catalytic combustion can be sucked, the heating efficiency can be maintained even in an environment where the temperature is low.

In the first to fifth embodiments as well, at least the steady-state air suction port 22 can be opened at the lower portion 29 of the combustion chamber 14 of the combustion section 11 to maintain the heating efficiency.

[0035]

The present invention is embodied in the form described above and has the following effects.

According to the first aspect of the present invention, the ignition air suction port and the steady-state air suction port serve as a suction port for air mixed with the fuel gas from the fuel section and supplied to the combustion section having the combustion catalyst. The opening area of the ignition-time air suction port is smaller than the opening area of the steady-state air suction port, and the steady-state air suction port is openable and closable. The air suction port during combustion is closed, air is introduced from the air suction port during ignition with a small opening area, and at the time of steady combustion requiring a large amount of appropriate air, during steady combustion with a large opening area. The ignition performance and the catalytic combustion performance can be improved by opening the air suction port and introducing air.

According to the invention described in claim 2,
A combustion section and a fuel section, wherein the combustion section includes a combustion catalyst,
Composed of a combustion chamber, a gas ejection nozzle, an air suction ejector, an air suction port, and an ignition device, the fuel unit includes an on-off valve for controlling fuel supply and a fuel tank, and the air suction port is used for ignition. It comprises an air suction port and a steady-state air suction port, and an opening / closing shutter is provided in the steady-state air suction port, and the opening area of the ignition-time air suction port is made smaller than the opening area of the steady-state air suction port. Therefore, it is possible to improve the ignition performance and the catalytic combustion performance by changing the amount of air introduced between the ignition and the catalytic combustion.

According to the third aspect of the present invention,
The combustion unit includes a combustion unit and a fuel unit. The combustion unit includes a combustion catalyst, a combustion chamber, a gas ejection nozzle, an air suction ejector, an air suction port, and an ignition device. The fuel unit controls supply of fuel. The air suction port is provided with an opening / closing shutter. The opening / closing shutter is provided with a through hole which is smaller than the opening area of the air suction port and serves as an air suction port at the time of ignition. Since the hole is provided not in the air suction port where drilling is difficult, but in the opening / closing shutter which is easy to drill, it is possible to easily adjust the amount of air at the time of ignition and to improve the ignition performance at low cost.

According to the fourth aspect of the present invention,
A combustion section and a fuel section, wherein the combustion section includes a combustion catalyst,
The fuel chamber includes a combustion chamber, a gas ejection nozzle, an air suction ejector, an air suction port, and an ignition device.The fuel unit includes an on-off valve for controlling fuel supply and a fuel tank. It consists of a time air suction port and a steady time air suction port, and this steady time air suction port is provided with an open / close shutter,
Since the sealing portion is provided at the contact portion between the steady air suction port and the opening / closing shutter, when the opening / closing shutter is closed at the time of ignition, air does not flow from the contact portion between the steady air suction port and the opening / closing shutter. In addition, the amount of air at the time of ignition can be reliably ensured, and the ignition performance can be improved.

According to the invention described in claim 5,
A combustion unit and a fuel unit are provided. The combustion unit includes a combustion catalyst, a combustion chamber, a gas ejection nozzle, an air suction ejector, an air suction port, and an ignition device. A valve and a fuel tank, wherein the air suction port comprises an ignition-time air suction port and a steady-state air suction port, and the steady-state air suction port is provided with an opening / closing shutter. Since the temperature detection mechanism provided in the combustion unit is linked to detect the temperature rise due to the heat of catalytic combustion and change the air amount, the change from the air amount at the time of ignition to the air amount at the time of catalytic combustion is performed. It can be performed automatically, and operability can be improved.

According to the invention described in claim 6,
Since the temperature detection mechanism is made of inverted bimetal,
The time for changing the amount of air at the time of ignition to the amount of air at the time of catalytic combustion can be shortened, and the time of incomplete combustion can be reduced.

Further, according to the invention described in claim 7, a combustion section and a fuel section are provided, and the combustion section includes a combustion catalyst, a combustion chamber, a gas ejection nozzle, an air suction ejector, an air suction port, and an ignition port. The fuel section is composed of an on-off valve for controlling fuel supply and a fuel tank, and the air suction port is composed of an ignition air suction port and a steady air suction port. An opening / closing shutter is provided at the opening, and the opening / closing mechanism of the opening / closing shutter is linked with the temperature detecting mechanism provided at the combustion section. During normal operation, the air suction port is opened at a lower portion of the combustion chamber in the combustion section and heated by catalytic combustion heat. Since the compressed air is sucked as combustion air, the heating efficiency can be maintained even in an environment where the temperature is low.

[Brief description of the drawings]

FIG. 1 is a sectional view of a catalytic combustor according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating an operation of the catalytic combustor according to the first embodiment of the present invention.

FIG. 3 is a sectional view of a catalytic combustor according to a second embodiment of the present invention.

FIG. 4 is a sectional view of a catalytic combustor according to a third embodiment of the present invention.

FIG. 5 is a sectional view of a catalytic combustor according to a fourth embodiment of the present invention.

FIG. 6 is a cross-sectional view illustrating an operation of a catalytic combustor according to a fourth embodiment of the present invention.

FIG. 7 is a sectional view of a catalytic combustor according to a fifth embodiment of the present invention.

FIG. 8 is a sectional view for explaining the operation of the catalytic combustor in the fifth embodiment of the present invention.

FIG. 9 is a sectional view of a catalytic combustor according to a sixth embodiment of the present invention.

FIG. 10 is a sectional view of a conventional catalytic combustor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Combustion part 12 Fuel part 13 Combustion catalyst 14 Combustion chamber 15 Gas ejection nozzle 16 Air suction ejector 17 Ignition device 18 Air suction port 19 Open / close valve 20 Fuel tank 21 Ignition air suction port 22 Constant air suction port 23 Open / close shutter 24 Through hole 25 Sealed part 26 Opening / closing mechanism 27, 28 Temperature detecting mechanism 29 Lower part of combustion chamber 43 Instantaneous reversal type bimetal

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Miki Hono 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F-term (reference) 3K017 BA01 BB04 BC10 3K065 TA13 TB08 TB11 TD05 TE01 TK02 TN01 TP08

Claims (7)

[Claims] An ignition air suction port and a steady-state air suction port are provided as suction ports for air mixed with a fuel gas from a fuel section and supplied to a combustion section having a combustion catalyst. A catalytic combustor wherein the opening area of the opening is smaller than the opening area of the steady-state air suction port, and the steady-state air suction port is freely openable and closable. 2. A combustion catalyst, a combustion chamber, a gas ejection nozzle,
A combustion section having an air suction ejector, an air suction port, and an ignition device; and a fuel section having a fuel tank and an opening / closing valve for controlling supply of fuel from the fuel tank to the gas ejection nozzle. As an ignition air suction port and a stationary air suction port are provided, the opening area of the ignition air suction port is smaller than the opening area of the stationary air suction port, and the steady air suction port is opened and closed by an open / close shutter. A catalytic combustor that can be opened and closed freely. 3. A combustion catalyst, a combustion chamber, a gas ejection nozzle,
A combustion section having an air suction ejector, an air suction port, and an ignition device; and a fuel section having a fuel tank and an opening / closing valve for controlling supply of fuel from the fuel tank to the gas ejection nozzle. A catalytic combustor provided with a through hole having an opening area smaller than an opening area of the air suction port in an opening / closing shutter for opening / closing the air suction port. 4. The catalytic combustor according to claim 2, wherein a sealing portion is provided at a contact portion between the air suction port and the opening / closing shutter. 5. A catalyst for combustion, a combustion chamber, a gas ejection nozzle,
A combustion section having an air suction ejector, an air suction port, an ignition device, and a temperature detection mechanism; anda fuel section having a fuel tank and an on-off valve for controlling supply of fuel from the fuel tank to the gas ejection nozzle, An ignition air suction port and a steady-state air suction port are provided as air suction ports, and the opening area of the ignition air suction port is smaller than the opening area of the steady-state air suction port. A catalytic combustor which is openable and closable by an open / close shutter, and in which the open / close mechanism of the open / close shutter and the temperature detection mechanism are linked. 6. The catalytic combustor according to claim 5, wherein an inverted bimetal is used as the temperature detecting mechanism. 7. The catalytic combustor according to claim 1, wherein at least the steady-state air suction port is opened at a lower portion of the combustion chamber in the combustion section.