JPS6218833Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a combustion control device for a combustion machine for a hot-air heater, etc., and is intended to improve usability.

In general, this type of combustor usually starts combustion at the maximum combustion rate (hereinafter referred to as "high") so that the room temperature can quickly rise to a comfortable temperature. Some combustion machines of this type can only start combustion at "high". However, with this kind of combustion equipment, after burning for a certain period of time (heating) and then extinguishing the fire, it burns again (heating) within a short time.
Even when the room temperature is at a comfortable temperature and there is no need for "high" combustion, the setting must be set to "high" to start combustion. For this reason, the user has to perform an operation to start combustion and then perform an operation to adjust combustion to "medium" or "weak" combustion, which is very inconvenient to use.

The present invention solves these conventional drawbacks; when first starting to use it, combustion can only be performed at "strong"; however, when combustion is to be performed within a short time after extinguishing, it can be set at "medium" or "high". "weak"
However, it was made so that it could be combusted.

An example of this will be explained below with reference to the drawings.
1 is a power outlet, 2 is a slide switch connected to the power circuit from outlet 1, power switch part 3, ignition switch part 4, convection fan high,
It consists of a switch part 5 for weak switching, and both ends of the slide contact 6 are connected when it comes to a square position. When the slide switch 2 is in the "off" state, the first relay 7 and the strong contact of the convection fan 8 are in the on state. Therefore, the first relay 7 is turned on at the same time as the outlet 1 is connected, and its relay contacts 7a and 7b are turned on. Note that since the convection fan 8 is connected via a delay thermoswitch 9, it is not turned on until combustion has started and a certain temperature is reached. A second relay 10 is connected in series to the delay thermoswitch 9, and its relay contact 10a is connected to the energizing circuit of the combustion fan 11. 12 is an operation display lamp, 13 is a pump for liquid fuel supply control, 14 is an ignition heater connected via the normally closed contact 10b of the second relay 10, and 15 is a delay timer. 15a is a switching contact that is switched by the delay timer 15;
Within the delay time, it is connected to the ignition indicator lamp 16, and when the delay timer is turned on, it is switched to short-circuit the ignition switch portion 4 of the slide switch 2. Also, 17 is an ignition timer, 17
a is a switching contact by the ignition timer 17; Furthermore, 18 is an anti-earthquake automatic fire extinguishing contact, 19, 2
0 is an overheat prevention contact, and 21 is an oil amount detection contact, both of which are normally closed contacts.

Next, the operation of the above configuration will be explained. First, when the outlet 1 is plugged into a power source, the first relay 7 is turned on via the power switch part 3 of the slide switch 2, and the relay contact 7a is turned on and enters self-holding, and the other relay contact 7b is turned on. do. From this state, when the slide contact 6 of the slide switch 2 is set to the "strong" position, the power switch part 3 and the timer contact 17
The fuel pump 13, the combustion fan 11, and the operation indicator lamp 12 are energized via the relay contact 7b and the ignition switch part 4, and the ignition heater 14 is energized.
is also energized and ignition begins. Even if the ignition slide contact 6 is set to the "weak" position, the ignition switch 4 will not enter the on state unless it is set to the "strong" position, so the fuel pump 13, ignition heater 14, etc. will not be energized and no ignition will occur. Therefore, when the warm air fan is in a cooling state, the slide contact 6 must be in the strong position to ignite the hot air fan.

On the other hand, at the time of starting the ignition, in this embodiment, the ignition lamp 16 is also energized via the delay timer 15 and the delay timer contact 15a. When the time set by the delay timer 15 has elapsed, the delay timer contact 15a is switched to cut off the current to the ignition lamp 16 and short-circuit the ignition switch portion 4 of the slide switch 2. Here, even if the slide contact 6 is set to the "weak" position, the
Since the fuel pump 13 and combustion fan 11 continue to be energized to continue combustion, combustion can be freely adjusted.

Furthermore, in this embodiment, the conduction of the ignition lamp 16 is switched by the delay timer contact 15a, so that while the ignition lamp 16 is lit, it is within the delay time of the delay timer. You can see that combustion cannot be adjusted.

Next, after ignition is completed in this way, when the combustion section reaches a certain temperature, the delay thermoswitch 9 closes and the second relay 10 is turned on, and its relay contact 1
0a is closed and the combustion fan 11 is energized from the delay thermoswitch 9 side, and the other relay contact 10b is opened and the energization to the ignition heater 14 is stopped. The convection fan 8 is then energized via the delay thermoswitch 9 and starts rotating.

The fire can be extinguished by simply returning the slide contact 6 of the slide switch 2 to the OFF state, thereby stopping the power supply to the fuel pump 13. At this time, combustion,
Delay thermo switch 9 for both convection fans 11 and 8
Electricity continues to be applied through the fuel cell, and the combustion continues until the fuel runs out, and then the fire is extinguished in a dry state.

On the other hand, if combustion is to be performed again after the slide contact 6 of the first slide switch 2 is turned off, the delay timer 15 is turned off at the same time as the slide contact 6 is turned off. However, there is usually a delay of several minutes before the delay timer contact 15a returns to its initial state. Therefore, during this period, the delay timer contact 15a maintains the same state as during combustion, that is, the state in which the ignition switch portion 4 is short-circuited. Therefore, if the slide contact 6 is returned to the combustion state at this point, even if it is in the "weak" state, the fuel pump 13, ignition heater 14, etc. will be energized immediately without any delay time. Combustion can be adjusted.

As explained above, according to the present invention, strong combustion is performed in the case of normal ignition start, but during combustion,
Even if the fire is extinguished and then re-ignited within a short period of time due to visitors, or even if the fire is accidentally extinguished due to a child's mischief, the combustion will continue at the desired combustion position without any waiting time (delay time). This makes it extremely easy to use.

[Brief explanation of the drawing]

The figure is a circuit diagram of a combustion control device in an embodiment of the present invention. 13... Pump, 4... Ignition switch section, 15
...Delay timer, 15a...Delay contact, 16...
…lamp.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) An ignition switch section that is turned on only during strong combustion operation is connected in series between the power source and a supply means such as a pump that controls fuel supply, and in parallel with this supply means. A delay timer is connected to the ignition switch section, and this delay timer has a delay contact that closes after a predetermined time after energization starts and returns to the original state and opens after a predetermined time after energization stops, and this delay contact is connected in parallel with the ignition switch part. Connected combustion control device. (2) The combustion control device according to claim 1, wherein the delay contact of the delay timer is a switching contact, and a display means such as a lamp is connected to the normally closed side of the delay contact.