JP2001208358A - Stove provided with grill - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem in a conventional stove, such that a gap, is easy to occur between the door and the body when the door of a grill is closed, and that unevenness in baking is made in a roasting or that hot exhaust in combustion leaks out of the space around the door, which overheats the main body of the heater itself. SOLUTION: This stove is equipped with a door switch 6 which is turned on, abutting against a door 5 when the grill door 5 is closed, on the side of the stove body 7, and when the pressing of the ignition switch is released, the relief valve 3 for gas supply of a grill burner 4 is kept in open condition, only when the door switch 6 is in on-state and a flame sensor 2 is turned on.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stove provided with a grilled fish.

[0002]

2. Description of the Related Art Conventionally, in such a stove, even if the grill door is intended to be closed, the closed state may be incomplete, and in particular, the grill door is integrated with a juice tray and is of a drawer type. In this case, since the door is heavily opened and closed, a gap is easily formed between the door and the main body when the door is closed. When the grill burner is ignited in such a state, the roasted material may be unevenly grilled, or high-temperature combustion exhaust may leak from a gap in the door, and the temperature of the stove body may rise excessively.

[0003]

SUMMARY OF THE INVENTION Accordingly, the present inventors have
To detect whether the door and the body are in close contact,
The door and the body are provided with contacts, and the switch composed of these contacts is inserted into the ignition circuit of the burner for grill,
I prototyped a stove with a grill that prevented the burner from firing until the door was completely closed. However, according to this configuration, the exposed contacts are contaminated with oil smoke or the like, resulting in poor contact, causing malfunction of the ignition plug, or the opening / closing operation of the contacts depends on the slow operation of the door manually. Therefore, there is a problem that a spark is easily generated between the contacts, which generates noise and adversely affects the control circuit. The present invention solves these problems,
It is an object of the present invention to provide a stove with a grill provided with a safety means such that the grill burner cannot be burned while the grill door is incompletely closed.

[0004]

SUMMARY OF THE INVENTION The present invention relates to an ignition switch (usually a push button switch) as shown in FIGS.
The grill door 5 is closed on a stove with a grill provided with a safety valve 3 for gas supply, which is held open by the output of the flame sensor 2 for detecting ignition of the pilot flame by the pressing operation of. The stove main body 7 is provided with a door switch 6 which is in contact with the door 5 in the state and is turned on, and when the ignition switch is released, when the door switch 6 is on and the flame sensor 2 is on. Only the gas supply safety valve 3 of the grill burner 4 is kept open. When the ignition switch 1 is pressed, the burner 4 is once ignited by the operation of the ignition plug. Door 5 is not completely closed and door switch 6
Is off, the gas supply safety valve 3 is not held, so that the combustion of the grill burner 4 is immediately stopped. Therefore, according to this configuration, there is no danger that the material to be roasted will be unevenly baked or that the combustion exhaust will leak and the temperature of the stove body 7 will not rise excessively, and that the door 5 and the stove body 7 are provided with respective contacts. In contrast to the above, since there is no need to provide electric wiring to the door 5 side, there is no possibility that the wiring will be caught or cut when the juice tray integrated with the door 5 is taken in and out. Further, if a microswitch is used as the door switch 6, the contact portion is housed in the case, so that it is difficult to be soiled, and the contact is snapped by the snap action, which causes noise. There is no risk of sparks.

According to a third aspect of the present invention, the gas supply safety valve 3 is kept open for a certain period of time after the door switch 6 is switched from the ON state to the OFF state. If the gas supply safety valve 3 is closed by the off output of the door switch 6 when the door is opened in order to see the degree of burning of fish or the like inside, the grill burner 4 must be re-ignited each time, which is troublesome. So door switch 6
The gas supply is not interrupted until a certain time has elapsed after the turning-off operation of the burner, and the trouble of re-igniting the burner 4 every time the fish is burned or turned over is eliminated.

[0006]

FIG. 1 shows an embodiment of a stove with a grill according to the present invention. A flame sensor 2 is constructed by inserting a thermocouple into a pilot flame of a burner 4 for a grill. Has directly excited the electromagnet of the gas supply safety valve 3 by this electromotive force to attract and hold the valve. Recently, as shown in FIG. In many cases, the control device 9 detects the interruption of the signal, and cuts off the power to the safety valve 3. According to the present invention, instead of the flame detection signal, the safety valve 3 is self-held only when both the flame sensor 2 and the door switch 6 are in the ON state, and the grill burner 4 is not operated until the door 5 is completely closed. This is to prevent combustion from being maintained.

A micro switch is used as the door switch 6, and as shown in FIG. 2, it is mounted so that the actuator protrudes from the surface of the stove body 7 where the grill door 5 abuts. It is adjusted so that the door 5 is brought into contact with the door 5 and turned on in a completely closed state. Therefore, even when the closed state of the door 5 is incomplete, the safety valve 3 is once opened and the grill burner 4 is ignited by the pressing operation of the ignition push button switch 1, but the safety switch 3 is not closed because the door switch 6 is not closed. Is not held, the power supply to the safety valve 2 is cut off at the same time as the pressing of the ignition button 1 is released, and the combustion of the burner 4 is not maintained after all.

FIG. 3 shows a control for performing the above operation.
FIG. 4 shows an example of a main circuit in the device 9;₁, R₂,
R₃ Is a relay, r₁ , r₂ , R₃Is each relay R₁,
R₂ , R₃Contact point. In FIG.
When the ignition button 1 is depressed while the safety valve is on, the safety valve 3
Is excited to open, the burner 4 ignites and the pyro
The flame burner is ignited and the flame sensor 2 is turned on.
Leh R₁Is activated, and the pressing of the ignition button 1 is released.
After that, the safety valve 3 is self-held. Next, door switch 6
Is opened, the timer 10 starts and starts timing.
However, at this time, the relay R₂Is the contact r_2aSelf-hold by
The contact r_2BRemains closed and therefore safe
The valve 3 is kept open. However, the setting of timer 10
After a fixed time (for example, T = 30 seconds) elapses, the relay R₃But
When activated, its contact r₃By relay R₂Energizing
Is disconnected and the relay R₃Contact point r_2BWith safety valve 3
Turns off. The door 5 closes within the set time of the timer 10.
Then, the door switch 6 returns to the state shown in FIG.
Valve 3 will be kept open. Such as
The delay operation is performed using the program of the microcomputer type controller.
It is easy to make it. The flowchart of FIG.
The main part of the program for this is shown.

[0009]

According to the present invention, as described above, in a state where a gap is formed between the grill door 5 and the stove body 7, the burner 4 cannot maintain the combustion, so that the fish can be grilled unevenly. It is possible to prevent the high-temperature combustion exhaust from leaking from the gap of the door and the temperature of the stove body 7 from excessively rising,
If the door switch 6 is formed by a micro switch, the contact portion is housed in the case, so that the contact portion is not easily stained, and the contacts are immediately cut off by snap action, thereby generating noise due to sparks and causing the control circuit 9 to malfunction. There is no danger of inducing. Further, since there is no need to provide electrical wiring to the door 5, there is no possibility that the wiring will be caught or cut when the juice tray integrated with the door 5 is taken in and out. Further, by keeping the gas supply from being shut off until a certain time has elapsed after the door switch 6 has been turned off, it is possible to save the trouble of reigniting the burner 4 every time the fish is burned or turned over. There are advantages such as possible.

[Brief description of the drawings]

FIG. 1 is a schematic system diagram of an embodiment of the present invention.

FIG. 2 is an overall perspective view of the same.

FIG. 3 is a main part circuit diagram of the above.

FIG. 4 is a flowchart showing a main part of a control program according to another embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 ignition switch 2 flame sensor 3 gas supply safety valve 4 burner 5 grill door 6 door switch 7 stove body 8 safety circuit 9 control device 10 timer R ₁ relay R ₂ relay R ₃ relay r ₁ contact r _2a contact r _2b contact r ₃ contact

Claims (3)

[Claims] 1. A stove with a grill provided with a gas supply safety valve in each burner, which is opened by a pressing operation of an ignition switch (or a button) and held open by an ON output of a flame sensor for detecting the ignition of a pilot flame. In the stove body side, a door switch that is turned on by contacting the grill door with the door closed is provided, and when the ignition switch is released, the door switch is turned on and the flame sensor is turned on. A stove with a grill, characterized in that the gas supply safety valve of the grill burner is kept open only at the time. 2. The stove with a grill according to claim 1, wherein a micro switch is used as the door switch. 3. The stove with a grill according to claim 1, wherein the gas supply safety valve is kept open for a certain period of time after the door switch is switched from the on state to the off state.