JPH064214Y2 - Stove with timer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a stove with a timer having a plurality of burner sections.

[Background Art] Conventionally, when cooking with a gas appliance such as a stove, a watch or a so-called timer is separately brought to the gas appliance to ignite gas for a predetermined time, and while watching the clock. Or, the gas was stopped by the notification of the timer. In the case of such a conventional example, it is necessary to always look at the timepiece, which makes it difficult to perform other tasks,
In addition, there is a problem that it is annoying because the watch has to be watched carefully. Further, there is a problem that after a predetermined time has passed, the user notices by looking at the clock, and even if the gas is stopped and the gas is stopped, the cooked food is overcooked and burnt. Furthermore, even when using a timer, a separate timer is required, and even if the notification is given by the timer, it is not possible to always stop the gas at the same time, and as with the above, cook the cooked food more than necessary. There was a problem of over-cooking, over-cooking, and over-cooking.

[Object of the Invention] The present invention has been provided in view of the above points, and a gas is burned in a burner unit after a predetermined time has elapsed in accordance with ignition of gas in one burner unit selected arbitrarily. The solenoid valve provided on the original gas pipe that supplies the
The purpose is to provide a stove with a timer that can reliably shut off gas.

DISCLOSURE OF THE INVENTION (Structure) The present invention includes a plurality of burner parts and a solenoid valve that is provided in a gas pipe from which gas is supplied to the plurality of burner parts and that shuts off by supplying or closing the gas by an opening operation. , Combustion of gas is detected by the thermocouple provided in each burner section, and in the case of extinguishment, etc., the thermocouple circuit that closes the solenoid valve to shut off the gas, and any time depending on the ignition of the gas A timer circuit for performing a timer operation, control means for opening the thermocouple circuit that detects gas combustion by a time-up signal of the timer circuit and closing the solenoid valve, and controlling any one burner section By providing a changeover switch for selectively switching from a plurality of burner units for timer control by means, the burner unit to be operated by the timer is selected by one changeover switch, and The timer circuit is operated in response to the ignition of the gas in the internal portion, and when the timer circuit times out, the time-up signal is input to the control means, and the thermocouple circuit is opened by this control means to turn on the solenoid valve. The gas supply is stopped by closing it.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 3 shows a perspective view of the main body A of the gas appliance of this embodiment, and FIG. 4 shows a plan view. A stove portion 1 is formed on the upper surface of the main body A, a grill 2 for grilling fish and the like is provided below the stove portion 1, and an oven 3 is provided below the grill 2.
As shown in FIG. 4, the stove part 1 has three burner parts 4a, 4a.
b, 4c, and instrument plugs 5a, 5b, 5c are provided on the front upper part of the main body A corresponding to these burner portions 4a, 4b, 4c.
Further, an instrument plug 6 corresponding to the grill 2 and an instrument plug 7 corresponding to the oven 3 are similarly provided respectively. Further, the oven 3 is provided with a timer switch 8 for operating a timer. The timer B, which is the gist of this embodiment, is arranged on the right side of the front surface of the main body A.

Next, the circuit of the two burner parts, for example, 4a and 4b of the stove part 1 and the timer part B for operating the timer of the grill 2 will be described. FIG. 1 is a specific circuit diagram of the whole, and FIG. 2 is a circuit diagram of essential parts. The timer circuit is composed of a timer IC 10 and uses a DC power supply DC as a power supply. The power supply for each circuit described later is supplied from the same DC power supply DC. The timer IC 10 has a crystal oscillator X as a reference clock signal, and is provided with a set button PB ₁ for setting the timer time and a cancel button PB ₂ for canceling the timer time. Timer IC1
A display unit 11 for displaying the timer time from 0 in a countdown is provided, and this display unit 11 is a 2-digit LC.
It consists of D and displays numbers in 7 segments. The output from the output terminal 14 of the timer IC 10 is IC
The signal is input to the transistor Q ₁ via 17 and 18, and _one of the relays Ry ₁ to Ry ₃ is excited by the ON operation of the transistor Q ₁ . The transistor Q ₁ and the relays Ry _{1 to} Ry ₃ form a control means.
The oscillator circuit 12 is composed of two NAND gates G ₁ and G ₂ , a capacitor C ₁ , a resistor R _{1 and the} like, and a control circuit 13 controls oscillation and stop. The pulse from the oscillation circuit 12 is input to the transistor Q ₃ via the NAND gates G ₃ and G _4, and the speaker SP is made to ring by the on / off operation of the transistor Q ₃ . A buzzer or the like may be used instead of the speaker SP. Further, V and G in FIG. 1 mean a power source and a ground, respectively.

The collector of the transistor Q ₁ is are three relays (exciting coil) Ry ₁ to Ry ₃ are connected in series, the relay Ry ₁
The change-over switch SW ₁ for switching and selecting these is connected to the other ends of the Ry ₃ to Ry ₃ . FIG. 2 shows a piping diagram of the gas pipe 19. The solenoid valve 20 is provided on the original gas pipe 19 for supplying gas to the burner portions 4a, 4b of the stove 1, the burner portion 2a of the grill 2, and the like.
Is provided. The solenoid valve 20 supplies gas by its opening operation and shuts off gas supply by its closing operation. The coil 20a of the solenoid valve 20 is connected to the power supply via a series circuit with a reed switch 22 (only one is shown in the figure for convenience). A permanent magnet interlocking with the instrument plugs 5a, ..., 7 is provided on the side of the reed switch 22, and when the instrument plug 5a is closed, the reed switch 22 is turned on and the permanent magnet is opened in the open state. The coil 2 is separated from the reed switch 22 by thermoelectromotive force from a thermocouple 23 described later.
4 is excited to turn on the reed switch 22. Also, until the burner portion 4a is ignited with the instrument plug 5a in the open state and the electromotive force is generated from the thermocouple 23, the reed switch 22 is turned on for a predetermined time by, for example, a timer circuit (not shown). I have to.

Normally closed contact r ₁ ~r of the relay Ry ₁ to Ry _{3 3} are each, forming a thermocouple circuit 21 of the closed loop between the thermocouple 23 and the coil 24. Therefore, in the example of FIG. 2, the contacts of the relay Ry ₁
The r ₁ , the thermocouple 23, and the coil 24 form the thermocouple circuit 21. This thermocouple 23 is used for the burner section 2 of the grill 2.
The thermocouple 23 provided on the burner parts 4a and 4b of the stove 1 also forms the thermocouple circuit 21 in the same manner.

Next, the operation will be described. The timer time of the timer IC 10 is set in advance by the set button PB ₁ . Then, the changeover switch SW ₁ is switched to the contact a,
The case of using the grill 2 will be described as an example. Since the changeover switch SW ₁ is connected to the a contact, the relays Ry ₂ and Ry ₃ connected to the b and c contacts are not excited and the normally closed contact is made.
Since r ₂ and r ₃ are closed, the timer IC 10 does not control the timer. Then, the burner portion 2a of the grill 2 is ignited. Then, the operation button (not shown) of the timer IC 10 is operated to operate the timer IC 10. When the gas is ignited, since the normally closed contact r ₁ of the relay Ry ₁ is also closed, the coil 24 by the electromotive force of the thermocouple 23
Is excited and the reed switch 22 is turned on.
Therefore, the coil 20a of the solenoid valve 20 is also excited and holds the opening operation of the solenoid valve 20. On the other hand, timer IC10
The output terminal 14 of becomes the L level by the timer operation,
The terminal Q of IC17 is at L level, and the timer IC10
Since the L level is output from the terminal 15 of
The terminal Q of C18 is also at L level, turning off the transistor Q ₁ . Therefore, the relay Ry ₁ is not excited and the contact r ₁ is closed as described above.

On the other hand, an inverted signal of the output of the terminal 15 is output from the terminal 16, and the transistor Q ₂ is turned on by the H level signal which is the inverted signal to bypass the transistor Q ₃ and the speaker SP The ringing from is blocked. In the control circuit 13, when the gas is not ignited and the power is turned on, the resistance value of the thermistor TH is high because the ambient temperature is low, so that the resistance R
_The transistor Q ₄ is turned on by the voltage divided by ₂ and R ₃ , and one input end of the NAND gate G ₁ of the oscillation circuit 12 is set to the L level to stop the oscillation operation. That is, since the oscillating circuit 12 does not oscillate when the burners 2a ... Are not ignited by gas,
No signal is input to the speaker SP, and no notification is given by the timer. And the burner part 2a
When the gas is ignited and the ambient temperature rises, the resistance value of the thermistor TH decreases, and the transistor Q ₄ is turned off, so that the input of the NAND gate G ₁ becomes H level and the oscillation circuit 12 starts the oscillation operation. . But here, since the L level signal from the timer IC10 of the terminal 14 is input to the NAND gate G _3, the NAND gate G ₃ are closed and the pulse from the oscillator circuit 12 is not transmitted to the transistor Q _3.

Here, when the preset timer time has elapsed, the display on the display unit 11 shows 0, and the terminal 1 of the timer IC 10
4 outputs an H level signal, terminal 15 outputs an H level signal, and terminal 16 outputs an L level signal. Therefore, an L level signal is output from the terminal Q of the IC17, the reset state of the IC18 is released by this signal, and the timer IC is released to the terminal B of the IC18.
H level signal from the terminal 15 of
An H level signal is output from the terminal Q of C18. This H
The level signal turns on the transistor Q ₁ ,
The relay Ry ₁ is excited, and the normally closed contact r ₁ inserted and connected in series to the thermocouple circuit 21 is opened. When this contact r ₁ is opened, the thermocouple circuit 21 is opened and the thermocouple circuit 2
Since no current flows from the thermocouple 23 to the first coil 24, the reed switch 22 is turned off. Therefore, the coil 20a of the solenoid valve 20 is cut off from the power supply, so that the solenoid valve 20 instantaneously closes and stops the supply of gas to the burner portion 2a.

Due to the time-up operation of the timer IC 10, the terminal 16 becomes L level, the transistor Q ₂ is turned off, and the terminal 14 becomes H level, so that the NAND gate G ₃ is opened and the pulse from the oscillation circuit 12 receives the transistor Q 2. ₃ is turned on and off to drive the speaker SP,
The speaker SP gives notification. Therefore, the cook knows that the preset timer time has elapsed by the notification from the speaker SP, and the cook does not overcook or overcook too much. Further, even if the gas is extinguished, the temperature of the thermistor TH does not immediately drop, so the transistor Q ₄ remains off, and the oscillation operation of the oscillation circuit 12 continues. And the thermistor T
When the temperature of H decreases and the resistance value increases, the transistor Q ₄ is turned on and the oscillation operation of the oscillation circuit 12 is stopped. The case of the grill 2 has been described, but the same applies to the burner section 4a of the stove section 1 ... In this case, the changeover switch SW ₁ may be changed over. Therefore, when the grill 2 is operated by the timer, the burner section of the other stove section 1 can be used as a normal stove,
The timer cannot be used at the same time. In addition, in this embodiment, the timer operation is performed by the three burner portions 2a, 4a, 4b of the grill 2 and the stove portion 1, but the number of the burner portions and the combination of other burner portions can of course be freely selected, and they can be combined as needed. Good.

[Advantages of the Invention] As described above, the present invention is a solenoid valve provided on a plurality of burner parts and a gas pipe from which gas is supplied to the plurality of burner parts, and shuts off the gas by opening or closing the gas. When,
A thermocouple circuit that detects gas combustion with a thermocouple provided in each burner and shuts off the gas by closing the solenoid valve in the case of extinguishment, etc., and a timer for an arbitrary time depending on the ignition of the gas A timer circuit that operates, a control unit that opens the thermocouple circuit that detects gas combustion by a time-up signal of the timer circuit and closes the solenoid valve, and an arbitrary one burner unit that controls the control unit. Since it is equipped with a changeover switch for selectively switching from a plurality of burner sections for timer control at, the timer operation is used to select one burner section to be used, and the gas of the burner section is selected. The timer circuit is operated according to ignition, and when the timer circuit times out, the time-up signal is input to the control means, and the thermocouple circuit is activated by this control means. So released, allowed to closing the solenoid valve,
It is possible to stop the gas supply, so there is no need for a separate clock or timer as in the past, and even when the time is up, overcooking, overcooking, etc. can be avoided. However, after the preset time has elapsed, the gas can be shut off quickly and surely, and furthermore, only one burner section is selected from the plurality of burner sections by the switch and the timer is operated. By doing so, it is possible to minimize the cost increase without raising the cost more than necessary without controlling all the burner parts at the same time, and it is not necessary to control all the burner parts by timer in actual cooking. When using the burner sections at the same time, it is necessary that any one of the burner sections be able to control the timer, and the other burner sections need to pay attention to the timer control. Is intended is not, moreover, kettle and, depending on the food, because the burner portion of any point can timer controlled by the switching switch, in which an effect that use without permission is very good.

[Brief description of drawings]

FIG. 1 is a specific circuit diagram of an embodiment of the present invention, FIG. 2 is a configuration diagram of essential parts of the same, FIG. 3 is a perspective view of a gas appliance main body of the same, and FIG. 4 is a plan view of the same. 2a, 4a, 4b are burners, 19 is a gas pipe, 20 is a solenoid valve, 2
Reference numeral ₁ is a thermocouple circuit, 23 is a thermocouple, and SW ₁ is a changeover switch.

Claims (1)

[Scope of utility model registration request] 1. A plurality of burner parts, a solenoid valve provided on the original gas pipe for supplying gas to the plurality of burner parts, and a solenoid valve for shutting off the gas by supplying or closing the gas by an opening operation, and provided on each burner part. A thermocouple circuit that detects gas combustion with a thermocouple and shuts off the gas by closing the solenoid valve in the case of extinguishing, etc., and a timer circuit that operates a timer for an arbitrary time depending on the ignition of the gas. A control means for opening the thermocouple circuit which detects the combustion of gas by the time-up signal of the timer circuit and closing the solenoid valve,
A stove with a timer, comprising a changeover switch for selectively changing one burner section from a plurality of burner sections for timer control by the control means.