JPH0144910Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Technical field] The invention is applicable to gas-burning appliances such as gas stoves,
In particular, it relates to gas combustion appliances using catalytic burners.

[Background technology]

Gas combustion appliances that use a catalytic burner do not perform their function unless the catalyst temperature reaches a certain level, so the problem is that combustion is unstable at the time of ignition until the catalyst temperature rises. have.

[Purpose of invention]

The present invention has been devised in view of these points, and its purpose is to provide a gas combustion appliance that can stabilize the combustion of the catalytic burner even at the time of ignition.

[Disclosure of invention]

In this invention, the gas supply pipe to the catalytic burner is formed by a main pipe for supplying gas for steady combustion and an auxiliary pipe for increasing the amount of gas, and a control valve for controlling the gas supply is used for ignition operation and extinguishing operation. A main control section that opens and closes with
It is characterized by being formed with an auxiliary pipe control section that opens with the ignition operation and closes after a predetermined period of time after the ignition operation is completed, so that gas is not supplied to the catalytic burner from the auxiliary pipe as well as the main pipe at the time of ignition. When the temperature of the catalyst increases, the gas is supplied only from the main pipe, and the ignition operation is continued until stable combustion is achieved as additional gas is supplied through the auxiliary pipe. This is done so that it is not necessary.

The present invention will be described in detail below based on the illustrated embodiment. In the figure, 1 is a catalytic burner, and this catalytic burner 1 has a main pipe 2 for sending gas necessary for steady combustion.
and the auxiliary pipe 3 are connected. 4 is a gas supply pipe to the pilot burner 5. A control valve 7 is installed between the appliance plug 6 and the main pipe 2, auxiliary pipe 3, and gas supply pipe 4. This control valve 7
is equipped with four chambers 11, 12, 13, 14, the second chamber 12, the first chamber 11 and the fourth chamber 1.
4 and the third chamber 13 are connected, the main pipe 2 is connected to the second chamber 12, the auxiliary pipe 3 is connected to the third chamber 13, the gas supply pipe 4 is connected to the fourth chamber 14, and the first chamber 11 is connected to the appliance stopper 6. connected to. Further, the first chamber 11, the fourth chamber 14, and the third chamber 13 have electromagnetic coils 41, 44, 43, respectively.
is located. Electromagnetic coil 41 here
are connected to a pair of thermoelectromotive pairs 45 and 46 that detect each combustion of the pilot burner 5 and the catalytic burner 1, and the electromagnetic coils 44 and 43 are connected to the condenser 32.

The ignition operating lever 20 is provided with plungers 21, 24, and 23 that control communication between the second chamber 12, the first chamber 11, the fourth chamber 14, and the third chamber 13. The ignition lever 20 also drives the ignition switch 25 to turn on its contact 26 and connect the battery 30 to the ignition coil 27. In the figure, 28 is a spark plug, 48 is a thermoelectromotive force,
Alternatively, it is a combustion confirmation meter that displays the combustion of the catalytic burner 1 using a bimetal.

Now, regarding the capacitor 32, the connection can be switched between the battery 30 and the discharging resistor 33 by the charge/discharge switch 31, and when igniting the catalytic burner 1, it functions as follows. do. That is, when igniting, the appliance plug 6 is opened, and the capacitor 32 is connected to the battery 30 for a while by the charging/discharging switch 31 to charge the capacitor 32. Incidentally, at this point, each plunger 21, 24, 23 has cut off communication between the second chamber 12 and the other chambers 11, 14, 13. Therefore, the gas reaches only the first chamber 11.

When charging of the capacitor 32 is completed, the ignition lever 20 is then pressed and the pilot burner 5 is ignited by the ignition plug 28. At this time, each plunger 21, 24, 23 is also pushed and the first chamber 1
1 through the second chamber 12, the fourth chamber 14, and the third chamber 1
Gas is sent to the catalytic burner 1 through the main pipe 2 and the auxiliary pipe 3, and to the pilot burner 5 through the gas supply pipe 4.

After this, even if the ignition lever 20 is returned, the plunger 21 remains the electromagnetic coil 41 operated by the output of the thermoelectromotive couple 45, 46, and the plunger 24, 23 remains the electromagnetic coil 41 operated by the output of the capacitor 32.
4, 43 will not restore it. but,
At this time, the charging switch 31 is already connected to the discharging resistor 3.
3, the attraction force of the electromagnetic coils 44, 43 on the plungers 24, 23 disappears after 30 to 40 seconds have elapsed, and the plungers 24, 23 return to their original positions due to the spring bias, allowing the plungers 24, 23 to pass through the auxiliary pipe 3. The supply of bulk gas to the catalytic burner 1 and the supply of gas to the pilot burner 5 are stopped. In other words, from now on, the catalytic burner 1 will only pass through the main pipe 2.
Gas is supplied to the Fire extinguisher with appliance hydrant 6
This is done by closing the .

[Effect of idea]

As described above, in this invention, when the catalytic burner is ignited, gas is supplied not only through the main pipe but also through the auxiliary pipe, so that stable combustion can be achieved even during the period when the catalyst temperature rises and the catalyst function stabilizes. Moreover, since the auxiliary pipe control section in the control valve for gas supply control is designed to open with the ignition operation and close after a predetermined period of time has elapsed after the ignition operation is completed, However, the increased amount of gas is supplied through the auxiliary pipe for a while, so there is no need to continue the ignition operation until the combustion of the catalytic burner becomes stable, which makes stable combustion of the catalytic burner reliably and easily. It is something that can be obtained.

[Brief explanation of the drawing]

The attached figure is a circuit diagram of an embodiment of the present invention, in which 1 shows a catalytic burner, 2 a main pipe, 3 an auxiliary pipe, and 7 a control valve.

Claims (1)

[Scope of utility model registration request] In a gas combustion appliance equipped with a catalytic burner, the gas supply pipe to the catalytic burner is formed of a main pipe for supplying gas for steady combustion and an auxiliary pipe for increasing the amount of gas, and a control valve for controlling the gas supply, A gas combustion appliance consisting of a main pipe control section that opens and closes with ignition and extinguishing operations, and an auxiliary pipe control section that opens with the ignition operation and closes after a predetermined period of time after the ignition operation ends.