JPS61252428A - Controller for gas supply to gas appliance - Google Patents

Abstract

PURPOSE:To make it easier to build in various kinds of safety devices and the like by opening or closing the cock of a gas path driven by a motor by controlling a controller for gas flow rates by an electronic controller and a sensor for the control position of a gas control section. CONSTITUTION:A key board is operated and control signals for ignition, extinguishing, and fire power regulation of a combustion section are put in an electronic controller 31. The controller 31 is operated by the control signals and detected signals of the position of a gas flow controller and of the cock of the control position sensor of a gas controller 30, and the controller 30 is driven. A motor 42 is turned, the cock is turned through a given angle for opening or closing, and the gas flow controller is turned to control the flow rate of gas. When various signals are put in the electronic controller, various kinds of controllers can be easily built in because the gas controller can be electrically controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is used for gas appliances such as gas staples and gas ovens, and controls the supply and stop of gas to the burner and the electronic control unit including a motor and a microcomputer. The present invention relates to a gas control device that controls flow rate.

BACKGROUND OF THE INVENTION The gas staple in this type of conventional gas appliance is controlled by manually rotating a gas cock to supply and stop gas to the gas burner, and by adjusting the flow rate.

FIG. 7 shows the gas staple, which is equipped with gas burners 1 and 2 on the left and right sides, and a grill section 3 used for grilling fish and the like is provided between these burners. And the manual knob 4 provided on the front operation section. The gas cock (not shown) was opened and closed by operating s and e, and the left side controlled the ignition and extinguishment of the burner 1, the grill section 3, the right gas burner 2, and the gas flow rate. 7 in the diagram
8 is a top plate, 8 is a trivet, 9 is a grill door, 1o is a knob thereof, and 11 is an exhaust hole of the grill portion 3.

Problems to be Solved by the Invention In this conventional gas stapler, the knobs 4 to 6 are manually rotated to ignite and extinguish the gas by opening and closing the cock, and the gas flow rate is adjusted by the degree to which the cock is opened, so the operation is very complicated.
Moreover, it was difficult to control the firepower. Also, in terms of safety,
Although there is a raw gas leak prevention device using safety valves such as solenoid valves, there are no tempura fire prevention devices, automatic fire extinguishing devices in case you forget to turn it off after burning for a long time, earthquake resistance devices, etc. The main reason for this was that the gas cock had to be opened and closed manually.

An object of the present invention is to provide a gas supply control device for gas appliances that is easy to incorporate various safety devices and is easy to operate.

Means for Solving the Problems The present invention, which solves the above-mentioned problems, includes an electronic control section that sends a signal to control the combustion section, and an electronic control section that is operated by the signal from the electronic control section and controls the combustion section. A gas control unit that controls gas supply and its flow rate; and a plurality of keyboards that are connected to the electronic control unit and input control signals,
The gas control section includes a motor, a cock driven by the motor to open and close a gas passage, a gas flow rate control body, and a control position detector for the cock and gas flow rate control body.

Operation According to the above means, when a control signal for ignition, extinguishment, and fire power adjustment of the combustion section is inputted to the electronic control section by operating the keyboard, this signal and the cock and gas flow rate from the control position detector of the gas control section are input. In response to a signal that detects the current position of the control body, the electronic control section operates to drive the gas control section.

In other words, the motor rotates and turns the cock by a predetermined angle to open and close the cock and rotate the gas flow control unit to control the gas flow rate.As long as various signals are input to the electronic control unit, the gas control unit can be electrically As a result, various control devices can be incorporated.

EXAMPLE A gas staple employing an embodiment of the gas supply control device of the present invention will be described below with reference to FIGS. 1 to 6. 6th
The figure shows a gas stapler employing the gas supply control device of the present invention. 20 is a horizontally long gas staple appliance body, and left and right stoves 22 and 23 are arranged side by side on a top plate 21.

Reference numeral 24 denotes a grill section such as a baking chamber located at the lower part of the right stove 23 and provided along the right end of the appliance body 20;
0 has a door 2 with a knob 25 on the front for putting in and taking out food.
6, and the combustion gas exhaust hole 27 is opened in the top plate 21 on the rear side of the right stove 23. The 928 is connected to the left end of the appliance main body 2o through the grill part 24 and the heat insulating part 29 of a predetermined width W. This is the operation panel installed next to it. This operation panel 28 includes a microcomputer, etc. that controls a gas control unit (details will be described later) 30 that controls the supply and stop of gas to the gas burners of the left and right stoves 22 and 23 and the grill section 24, and controls the gas flow rate. It is equipped with a plurality of keyboards for inputting control signals to an electronic control unit (details will be described later) 31. This keyboard has two left and right stoves.
2.23 and grill part 24 each have a fire extinguishing button 3
2. Firepower small difference ignition button 33, firepower large lid ignition button 34
from top to bottom, one for left stove 22 and one for right stove 2.
3, the grill section 24, and the operation panel 28.

Reference numerals 35a, 35b, and 35c are combustion indicator lamps for each stove and grill, and the number of lights lit increases or decreases depending on the strength of the heat. 36 is a cooking timer that also functions as a clock.

Next, the gas control section 30 described above will be explained in detail according to FIGS. 1 to 4. This gas control section has the same structure as each stove and grill section, so an example will be explained. 3
7 is a cock body having a gas inlet 38 and a gas outlet 39;
A closure 40 is rotatably provided on the cock body 37 and has a gas passage 41 through which the gas inlet 38 and the gas outlet 39 are communicated. 42 is a motor whose rotational speed is lowered by a gear that rotates the closing member 4o, which engages with the closing shaft 4Qb through the fitting hole 4Q& which has a rectangular cross section, is slidable in the axial direction, and rotates. Transmits power only in the direction. Reference numeral 43 denotes a rotatable circular plate gas flow rate control body provided in the cock body 37 between the downstream of the closure 4o and the gas outlet 390, and the gas flow rate control body 43 is a circular plate provided in the center.
A connecting rod 45 is fixed in the letter-shaped hole 44, and the upper end of this connecting rod 45 is connected to the closure 40 so that it can slide in the axial direction along the center line and transmits force only in the rotational direction. ing. As shown in FIG. 3, the gas flow rate control body 43 has an arcuate gas passage hole 43 & along a circumferential line P opposite to the gas outlet 39 of the cock body 37 and rotates to adjust the gas flow rate from large to small or vice versa. Control holes 43b to 43g with different diameters are provided to control the gas flow rate by rotating with the closing member 4o and changing the position of the gas passage hole 43aL and control holes 43b to 43g with respect to the gas outlet 39 by changing the rotation angle. do. 46 is a gas outlet structure closed at the bottom of the cock body 37; 47 is a gas outlet structure 4;
6, press the gas flow control body 43 to the gas passage hole 431
L, a spring that prevents gas leakage from locations other than the control holes 43b to 43g; 48, a spring that prevents the closing member 4o from rising; 49, the rotation of the gas flow rate control body 43 and the closing member 40 rotated by the motor 42; A control position detector that detects the angular position and reports it to the electronic control unit 31, which includes a current collector plate 61 having a plurality of current collectors 50, a contact rail 62 with which each current collector 50 of this current collector plate 51 comes into contact, and contacts 81- It consists of a contact plate 63 having up to B8. The contact plate 63 is fixed to the cock body 37, and the current collecting plate 61 is arranged so that its center line is aligned with the closing shaft 40b so that only the force in the rotational direction is transmitted to the closing shaft 40b, and it is slidable in the axial direction. contacts B1 to B corresponding to the gas passage holes 43& and control holes 43b to 43g of the gas flow rate control body 43.
8 is provided. As shown in FIG. 4, the contact plate 53 is provided with a contact rail 62 on the circumference of M′ extending almost all around the center hole 54, and contacts B1 to B8 on the circumference of B′. 5o rotates on the contact rail and the contact.

When the current collector 50 is located at the contact point B1, the closing member 40
is closed and gasification occurs. Next, when the current collector 60 is located at the contact B2, the closing member 40 rotates 90' and opens, and the gas passage hole 431L of the gas flow rate controller 43 is fully opened in correspondence with the gas outlet 39. The order of the contacts B3 to B8 is similarly determined from the control holes 43b to 43b of the gas flow rate controller 43 shown in FIG.
It shows that it corresponds to 43g.

Therefore, since the contact rail 52 and the contacts B1 to B8 are connected to the electronic control unit 31 via the lead wire 56,
This indicates the rotational angle position of the gas control unit 30 (closer 40, gas flow rate control body 43). For example, when supplying the amount of gas indicated by contact B4, press the high-power ignition button 34 on the operation panel 28. When pressed, a control signal is input to the electronic control unit 31, the motor 42 rotates, and the contact B3 moves up one step, increasing the amount of gas. 56 is a motor mounting plate attached to the cock body 37; 57 is a spring that prevents the current collector plate 61 from floating; and 68 is a lead wire that connects the motor 42 to the electronic control section 31. 69 is the cock body 37
A nozzle connected to the gas outlet 39 of the grill or stove burner 6o supplies gas to the grill or stove burner 6o. 61 is electronic control unit 3
Light the stove burner 6o with the igniter connected to 1.

A combustion detection sensor 62 detects combustion in the stove burner 60 and sends a signal to the electronic control unit 31 to stop the spark of the igniter 61.

Since the gas control unit 3o and the electronic control unit 31 described above use a household AC power source, in the event of a power outage, the driving power for the motor 42 and rotational position detector 49 of the gas control unit 30 will be lost, or The electronic control unit 31 also does not work and is in an uncontrolled state, which is dangerous. Therefore, a backup power supply 63 and a power failure check circuit 64 shown in FIG. 5 are provided, and the backup power supply 63 drives the motor 42 to return the closing member 4Q from open to closed. In other words, 65 is a transformer that lowers the voltage of C1oOv, a rectifier 66, and a smoothing resistor 6.
7. A DC power supply circuit consisting of a capacitor 68 is connected to the secondary side. The backup power supply 63 is composed of a capacitor and is connected to the DC power supply circuit through a diode 69 for preventing reverse current. T.

protects the diode 69 with a resistor to prevent overcurrent.

71 and 72 are dividing resistors, which are connected in parallel to the backup power supply 63. 73 is a comparator, the ■ terminal is connected to the DC power supply circuit, the e terminal is connected to the common point of dividing resistors A1 and 72, and the output terminal is connected to the power failure check circuit 64 of the electronic control unit 31.
is connected to. During normal use, power is supplied to the motor 42, electronic control section 31, etc. from the DC power supply circuit.

However, when a power outage occurs, the potential at the ■ terminal of the comparator 73 becomes Ov, while the
The terminal becomes high potential, and the output of the comparator 73 is reversed. By transmitting this inverted output, the power failure check circuit 64 of the electronic control unit 31 determines that a power failure has occurred, and drives the motor 42 by the backup power source 63 to
It closes the . A lead wire 74 connects the keyboard of the operation panel 28 to the electronic control section 31.

In the embodiment described above, a control signal is input to the electronic control unit 31 that presses the ignition button 34, which is the keyboard of the operation panel 28. Then, a signal is sent from the electronic control section 31 to the gas control section 3o, the motor 42 rotates, and the closure 40 and the gas flow rate control body 43 are simultaneously operated. Then, the closure 40 opens, and the gas flows through the closure 4o and the gas passage hole 4, which is the hole at that time that matches the gas outlet 39 of the gas flow rate controller 43.
31L or control holes 43b to 43g, the gas is supplied to the gas burner 60 (in this case, the left stove 22) through the nozzle 59, and is ignited and combusted by the spark of the igniter 61 activated by a signal from the electronic control unit 31. It is something. When you want to adjust the firepower, for example, you pressed the large firepower ignition button 34 first, so when you press the small firepower ignition button 33 this time, a control signal is sent to the electronic control unit 31.
On the other hand, the current rotation angle of the gas flow rate control body 43 is detected by the rotation position detector 49 and notified to the electronic control unit 31, but this position detection is not the position to reduce the thermal power. After confirming this, the electronic control unit 31 sends a signal to the motor 42, and the motor 42 rotates via the closure 4o until the gas flow rate controller 43 rotates to a predetermined angle to reduce the thermal power. It is adjusted to Of course, when the gas flow rate control body 43 rotates to a predetermined chamber, the power to the motor 42 is stopped. Further, at this time, the number of combustion indicator lamps 36a is lit less because the number of combustion indicator lamps 36a becomes smaller than the number of strong ones.

Furthermore, when extinguishing the gas burner 60, use the extinguishing button 32.
If you press , the electronic control unit 31 and motor 42 will be activated in the same way as described above.
A signal is transmitted from the rotational position detector 49 indicating the position of the gas flow rate control body 43 and the closure 40 to the electronic control unit 3.
1, the electronic control unit 31 rotates the motor 42 to close the closing member 4o.

In the explanation of the above embodiment, only ignition, extinguishing, and flame power adjustment are performed, but in this way, the opening/closing and adjustment of the gas flow rate are all performed electrically, so the temperature of the bottom of the pot placed on the stove can be detected as necessary. It is also possible to provide a sensor 6 to check the cooking completion and detect abnormally high temperatures, send a signal to the electronic control unit 31 to prevent a tempura fire, and then rotate the motor 42 to close the closing member 4o.

In this way, in this example, the opening/closing of the gas cock and the adjustment of the firepower, which were conventionally done manually, were automated using a combination of an electronic control unit, motor, cock, and gas flow rate controller, so various safety devices can be combined by simply adding sensors, etc. You can do it easily.

In addition, the gas supply and stop is a cock type, unlike a general valve type, so the safety of gas shutoff is also high.

Furthermore, the motor 42, the closure 4o, and the gas flow rate control body are set on the same axis and are connected so that force can be transmitted only in the rotational direction, resulting in fewer parts, high reliability, and low cost. can.

Furthermore, gas flow rate control is convenient because the flow rate can be changed arbitrarily by opening the required number of control holes in the gas flow rate control body 43.

Furthermore, when controlling the gas control unit 30, the motor 42 only needs to be rotated at that time, and no electric power is used at other times, resulting in energy savings compared to controlling gas supply using a solenoid valve.

Effects of the Invention As described above, the present invention includes an electronic control section that sends a signal to control the combustion section, and a gas control section that is operated by the signal from the electronic control section and controls the gas supply to the combustion section and its flow rate. , a plurality of keyboards that are connected to the electronic control unit and input control signals, and the gas control unit includes a motor, a cock that is driven by the motor to open and close the gas passage, a gas flow rate control body, and the cock. and a control position detector for the gas flow rate controller, and has the following effects.

(1) Since the gas control unit is controlled by driving the motor with an electric signal, it is easy to incorporate various control devices such as safety devices.

@) Since the cock of the gas control unit and the gas flow rate control body are controlled by the rotation of the Mada motor, the cock can be opened and closed reliably and safely, and the flow rate can be easily changed as desired.

(3) Since the motor only needs to rotate during control, power consumption can be saved compared to gas control using a solenoid valve.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a gas supply control device according to an embodiment of the present invention, Fig. 2 is a vertical cross-sectional view of the gas control unit, which is the main part, and Fig. 3 is a plan view of the gas flow rate control unit. Figure 4 is a front view of the same contact plate, Figure 5 is a power supply circuit diagram including the backup power supply circuit, Figure 6 is a perspective view of a gas staple employing the gas supply control device of the present invention, and Figure 7 is a conventional example. 1 is a perspective view of a gas staple employing the gas supply control device of FIG. 30... Gas control unit, 31... Electronic control unit,... Keyboard, 37... Cock, 42... Motor, 43... ...Gas flow rate control body, 63...Nock-up power supply,
・・・・・・Control position detector. Name of agent: Patent attorney Toshi Nakao, Idiot No. 3
Figure 5 Po

Claims (1)

[Claims] an electronic control section that sends a signal to control the combustion section; a gas control section that is operated by a signal from the electronic control section and controls gas supply to the combustion section and its flow rate; and a gas control section connected to the electronic control section; and a plurality of keyboards for inputting control signals, and the gas control unit includes a motor, a cock driven by the motor to open and close the gas passage, a gas flow control body, and a control position detector for the cock and the gas flow control body. A gas supply control device for gas appliances consisting of: