JP2004219007A - Cooking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cooking device with improved operability of an operation part, reliability and safety. <P>SOLUTION: This cooking device is provided with an ignition key 10, a quenching key 11, an operation part 24 attachable to/detachable from a main body, with changeable operation directions, a combustion control part 2 to control combustion based on a signal from the operation part 24, and a receiving coil 5 and a feeding coil 6 respectively provided on the operation part 24 and the combustion control part 2 electromagnetically coupled to each other. When no signals are transmitted between the coils during a prescribed time or over, combustion is quenched. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an operation unit of a cooking appliance, and more particularly to an operation unit that is detachable from a main body or that can change an operation direction.
[0002]
[Prior art]
Generally, the cooking device uses the upper surface for heating purposes, so that the operation unit is disposed on the front surface of the device. Therefore, when operating while standing on the front of the device, the vertically arranged operation unit is viewed from above, and there is a disadvantage that it is difficult to see and the operation is difficult. Therefore, there has been proposed a cooker that is stored in the main body of the appliance when not in use, and the operation unit is opened when the appliance is used or the operation unit is operated away from the main body (see Patent Document 1).
[0003]
In FIG. 8, the operation unit 24 is separated from the main body 25, and transmits infrared light from the operation unit to the infrared receiving unit 26 of the main body 25 for remote control.
[0004]
[Patent Document 1]
JP 2000-323270 A (FIG. 1)
[0005]
[Problems to be solved by the invention]
However, in the above-mentioned conventional configuration, since the infrared communication is performed between the cooking device main body and the operation unit by infrared rays, if the infrared light emitting unit or the light receiving unit is contaminated due to boiling over, the reliability of the mutual communication may be reduced. There is. In addition, there is a problem in that if the operation unit moves away from the communication unit during cooking, the operation of the appliance may not be stopped.
[0006]
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its object to provide a cooking appliance in which the reliability and safety of operation of the appliance are ensured and the operability is improved.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned conventional problem, the present invention electromagnetically couples a first coil provided in an operation unit and a second coil provided in a combustion control unit, and controls a signal between the coils for a predetermined time or more. If there is no transmission, combustion is stopped.
[0008]
According to the above invention, since there is no electrical contact or connection lead wire for connecting the device main body and the operation unit, failure due to poor connection of the contact is eliminated, and reliability of communication between the devices is reduced due to boiling over. When the operation unit and the appliance main body cannot communicate with each other, the combustion unit is immediately switched from the combustion state to the fire extinguishing state, so that a highly reliable cooking appliance can be provided while ensuring safety.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The first aspect of the present invention provides an operation unit capable of instructing ignition, fire extinguishing, heat power adjustment, and the like, which can be attached / detached from the main body or whose operation direction can be changed, a first coil on the operation unit, and a signal from the operation unit. A second coil is provided in a combustion control unit for controlling combustion, and the first coil and the second coil are electromagnetically coupled to each other, and signal transmission between the first and second coils is performed for a predetermined time or more. If not, the combustion is stopped.
[0010]
Since the signal transmission between the operation unit and the main body is performed by electromagnetic coupling, the reliability of communication between the operation unit and the operation unit does not decrease due to simmering or the like frequently occurring in the cooking appliance. When a signal cannot be transmitted between the main bodies for a certain period of time, the fire is immediately extinguished, so that it is possible to provide a highly reliable cooking appliance while ensuring safety.
[0011]
According to a second aspect of the present invention, there is provided an operation unit capable of instructing ignition, fire extinguishing, adjustment of heating power, and the like, which can be detached from the main body or whose operation direction can be changed, a first coil provided on the operation unit, and the operation unit. A second coil is provided in a combustion control unit that controls combustion by the signal of the above, the first coil and the second coil are electromagnetically coupled, and a signal of a fire extinguishing instruction from the operation unit to the combustion control unit is This is larger than the signal strength of the ignition instruction.
[0012]
And, since the fire extinguishing signal after starting the combustion by the ignition instruction can be reliably transmitted to the main body side, it is possible to provide a highly reliable cooking appliance while ensuring safety.
[0013]
According to a third aspect of the present invention, there is provided an operation unit capable of instructing ignition, fire extinguishing, adjusting the heating power and the like and capable of attaching and detaching or changing the operation direction from the main body, a first coil on the operation unit, A combustion control unit that controls combustion with a signal includes a second coil, the first coil and the second coil are electromagnetically coupled, and the driving power of a solenoid valve that controls the supply of a heat source on the main body side is controlled by an operating unit. It is configured to be supplied from the side.
[0014]
When signal transmission between the operation unit and the main body becomes impossible, power supply to the solenoid valve is stopped, so that the solenoid valve is closed, supply of heat source is stopped, and the fire is surely extinguished, thereby ensuring safety.
[0015]
According to a fourth aspect of the present invention, the electric power for driving the solenoid valve applied to the first coil and the second coil according to the third aspect is made smaller than the electric power for transmitting a signal in accordance with an instruction for ignition. .
[0016]
When the ignition instruction cannot be transmitted from the operation unit to the combustion control unit, the solenoid valve is surely shut off and closed to ensure safety.
[0017]
The invention according to claim 5 is configured such that the driving power of the operation unit is supplied from the combustion control unit.
[0018]
Further, since it is not necessary to provide a power source such as a battery on the operation unit side, the configuration of the operation unit can be simplified, and there is no need to replace the battery, thereby improving usability.
[0019]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0020]
(Example 1)
FIG. 1 is a circuit block diagram of a gas cooking appliance according to a first embodiment of the present invention, FIG. 2 is an external view of the cooking appliance, and FIG. And the opened state (b).
[0021]
In FIG. 1, a battery 1 supplies power to a combustion control circuit 2 (combustion control unit) for controlling combustion of a cooking appliance. The power receiving coil 5 (second coil) is connected to the combustion control circuit 2 via the signal rectification circuit 3. The solenoid valve 4 is provided in the gas passage to open and close the gas, and is controlled to be opened and closed by the combustion control circuit 2.
[0022]
The configuration described above is on the cooking appliance body side, and the configuration on the operation unit side will be described below. The ignition key 10 is a switch for inputting an instruction for ignition and the fire extinguishing key 11 is a switch for inputting a fire extinguishing instruction.
[0023]
In the above configuration, the ignition instruction input input to the ignition key 10 is converted into a code whose amplitude has been modulated by the key input control circuit 8, and the power supply coil 6 (first coil) is driven by the coil drive circuit 7. The power supply coil 6 on the operation unit side and the power reception coil 5 on the cooking appliance main body side are electromagnetically coupled by physically contacting or approaching each other, as shown in FIG. 3, for example. The signal is transmitted to the power receiving coil 5 and input to the combustion control circuit 2 as a DC signal by the signal rectification circuit 3. The combustion control circuit 2 receives the signal and drives the solenoid valve 4 to open to start combustion. When performing a fire extinguishing operation, a fire extinguishing signal is input to the combustion control circuit 2 in the same manner as in the ignition operation to drive the solenoid valve 4 to close.
[0024]
Here, the key input control circuit 2 is set so as to output a predetermined signal code at regular time intervals, for example, every 5 seconds to drive the power feeding coil 6. When a signal is not input to the power receiving coil 5 within a predetermined time, the combustion control circuit 2 extinguishes the fire, that is, drives the solenoid valve 4 to close. The interval between signals transmitted from the key input control circuit 8 is determined so as not to impair the safety due to the inability to extinguish the fire.
[0025]
Thus, after the ignition operation, the combustion can be stopped when a signal cannot be transmitted from the operation unit within a predetermined time during the combustion, and the combustion is reliably stopped when any trouble occurs on the operation unit. Safety can be ensured. That is, the operation unit can be moved, and operability can be improved as compared with the conventional operation unit. In addition, since the operation unit and the cooking appliance main body are electromagnetically coupled, there is no electrical contact, and there is no cause of poor contact, so that the reliability is high. In addition, since the combustion is extinguished if there is no signal transmission between the coils for a predetermined time or longer, even if the signal transmission between the operation unit and the cooking appliance main body becomes impossible for some reason and the fire extinguishing instruction cannot be input to the combustion control circuit, The fire can be extinguished and the unsafe condition can be resolved.
[0026]
In the present embodiment, the key input of the operation unit is a function of only the operation of ignition and fire extinguishing. However, in addition to the function of heat power adjustment, a operability that allows fine heat power adjustment may be further improved.
[0027]
(Example 2)
FIG. 4 is a circuit diagram of a cooking appliance according to Embodiment 2 of the present invention. 4, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 4, the switch 12 is switched by the key input control circuit 8 to switch the power supply voltage applied to the coil drive circuit 7.
[0028]
In the above configuration, the key input control circuit 8 switches the switch 12 to the terminal 12b side when the ignition key 10 is pressed and the signal is driven through the coil drive circuit 7 to drive the power supply coil 6. As a result, power is applied to the coil drive circuit 7 via the resistor 13, the applied voltage is lower than when the switch 12 is on the terminal 12a side, and the output applied to the power supply coil 6 is also reduced. Next, when the fire extinguishing key 11 is pressed, the key input control circuit 8 switches the switch 12 to the terminal 12a side, and supplies the battery power directly to the coil driving circuit 7. Therefore, the output applied to the feeding coil 6 becomes larger than when the ignition key 10 is pressed.
[0029]
In this way, when giving instructions for ignition and fire extinguishing, if the positional relationship between the cooking appliance main body and the operation unit is the same condition, if the ignition instruction can be given, the fire extinguishing instruction can be given reliably, and safety is improved. A highly reliable cooking appliance can be provided while securing. That is, by making the signal of the fire extinguishing instruction larger than the signal intensity of the ignition instruction, the fire can be surely extinguished after ignition and safety can be ensured.
[0030]
(Example 3)
FIG. 5 is a circuit diagram of a cooking appliance according to Embodiment 3 of the present invention. In FIG. 5, the same components as those in FIG. In FIG. 5, when the ignition key 10 is pressed, the key input control circuit 8 drives the power supply coil 17 via the coil drive circuit 18. The output of the power supply coil 17 is transmitted to the power receiving coil 16 provided on the main body side by electromagnetic coupling, and the output of the power receiving coil 16 is rectified by the diode 15 and applied to the emitter of the transistor 14. The power feeding coil 17 and the power receiving coil 16 transmit a signal for supplying driving power to the electromagnetic valve 4, and are configured separately from the signal transmission for instructing ignition and fire extinguishing. Then, the ignition instruction input to the ignition key 10 is input to the combustion control circuit 2 as in the case of the first embodiment, the base of the transistor 14 is set to Low, and the transistor 14 is turned on. As a result, the solenoid valve 4 is opened, a heat source is supplied, and a combustion state occurs.
[0031]
Here, when the cooking appliance body and the operation unit are separated from each other and the power supply coil 6 and the power reception coil 5 are separated to a distance at which a signal cannot be transmitted, the fire control key 2 of the operation unit is pressed and input to the combustion control circuit 2. However, the fire extinguishing signal cannot be transmitted, but the signal is not transmitted to the power receiving coil 16 at the same time. Therefore, the solenoid valve 4 that operates using the output signal of the power receiving coil 16 as a power source is closed, the supply of the heat source is stopped, and the fire is extinguished. . That is, since the driving power of the solenoid valve is supplied from the operation side, when a signal cannot be transmitted between the operation unit and the cooking appliance main body, the solenoid valve is shut off, combustion is extinguished, and safety can be ensured.
[0032]
In this embodiment, the electromagnetic valve 4 is driven by using the battery on the operation unit side as a power source. However, a method of supplying power to the operation unit from the cooking appliance body and transmitting the electric power to the cooking appliance again is also possible. It is.
[0033]
(Example 4)
FIG. 6 is a circuit diagram of a cooking appliance according to Embodiment 4 of the present invention. 6, the same components as those in FIG. 5 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 6, a resistor 19 provided at a power supply input portion of the coil drive circuit 18 reduces the voltage applied to the coil drive circuit 18, and is compared with the output power of the power receiving coil 16 which becomes the drive power of the solenoid valve 4. The output of the power receiving coil 5 for transmitting the ignition signal to the combustion control circuit 2 is increased.
[0034]
Thereby, the driving power of the solenoid valve is supplied from the operation side, and the power is smaller than the signal power of the ignition instruction from the operation section to the combustion control section. In the positional relationship, the solenoid valve cannot be opened, and safety can be ensured.
[0035]
(Example 5)
FIG. 7 is a circuit diagram of a cooking appliance according to Embodiment 5 of the present invention. 7, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. The coil drive circuit 20 oscillates at about 50 KHz and drives the power supply coil 21. The power is transmitted to the power receiving coil 22 provided in the operation unit by electromagnetic coupling, and the power induced in the power receiving coil 22 is converted into DC by the diode 23 and becomes a power source for the operation unit such as the key input control circuit 8.
[0036]
Accordingly, it is not necessary to provide a battery or the like as a power supply on the operation unit side, and the configuration of the operation unit side can be simplified, and the usability is improved without the trouble of replacing the battery. In addition, since a battery case is not required in the operation unit, there is no opening for the operation unit, and a sealed structure can be obtained. Thus, when dirt such as boiling over is removed, washing can be performed with water.
[0037]
In this embodiment, the power supply coil 6 and the power reception coil 5 for signal transmission and the power supply coil 21 and the power reception coil 22 for separately supplying power to the operation unit are separately provided. It may be used for supply.
[0038]
【The invention's effect】
As is apparent from the above description, according to the present invention, the operation unit can be moved, the operability is improved as compared with the conventional operation unit, and a highly safe cooking appliance can be realized. In addition, since the operation unit and the cooking appliance main body are electromagnetically coupled, there is no electrical contact, and there is no cause of poor contact, so that the reliability is high.
[Brief description of the drawings]
FIG. 1 is a circuit block diagram of a cooking appliance according to a first embodiment of the present invention. FIG. 2 is an external view of the cooking appliance. FIG. 3 is a side view of an operation unit of the cooking appliance. FIG. FIG. 5 is a circuit block diagram of a cooking appliance in Embodiment 3 of the present invention. FIG. 6 is a circuit block diagram of a cooking appliance in Embodiment 4 of the present invention. FIG. 7 is an embodiment of the present invention. 5 is a circuit block diagram of the cooking appliance in FIG. 8; FIG. 8 is an external view of a conventional cooking appliance;
2 Combustion control circuit (combustion control unit)
4 Solenoid valve 5 Receiving coil (second coil)
6 feeding coil (first coil)
10 ignition key 11 fire extinguishing key 24 operation unit

Claims (5)

An operation unit that can be switched on or off or whose operation direction can be changed from the main unit by instructing at least one of ignition, fire extinguishing, and heat power adjustment, a first coil on the operation unit, and combustion using a signal from the operation unit A second coil is provided in the combustion control unit for controlling the first and second coils, and the first coil and the second coil are electromagnetically coupled to each other, and a signal is not transmitted between the first and second coils for a predetermined time or more. Cooking equipment configured to stop combustion. An operation unit that can be switched on or off or whose operation direction can be changed from the main unit by instructing at least one of ignition, fire extinguishing, and heat power adjustment, a first coil on the operation unit, and combustion using a signal from the operation unit A second coil is provided in the combustion control unit for controlling the operation, the first coil and the second coil are electromagnetically coupled, and a signal for a fire extinguishing instruction from the operation unit to the combustion control unit is a signal for an ignition instruction. Cooking equipment characterized by greater than strength. An operation unit that can be switched on or off or whose operation direction can be changed from the main unit by instructing at least one of ignition, fire extinguishing, and heat power adjustment, a first coil on the operation unit, and combustion using a signal from the operation unit A second coil and a solenoid valve for controlling a heat source supply, the first coil and the second coil are electromagnetically coupled, and the driving power of the solenoid valve is controlled by the operating unit. Cooking appliance characterized by being supplied from a cooking appliance. 4. The cooking appliance according to claim 3, wherein the electric power for driving the solenoid valve applied to the first coil and the second coil is smaller than the electric power for transmitting a signal according to an instruction for ignition. The cooking appliance according to any one of claims 1 to 4, wherein the driving power of the operation unit is supplied from the combustion control unit.

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