JPS6016231A - Heating cooker equipped with pilot safety device - Google Patents

Abstract

PURPOSE:To simplify the ignition operation and at the same time improve the operational convenience by a method wherein a pilot burner is automatically ignited and yet the gas extinction safety valve of a pilot safety device is held open only by pivoting an operating knob. CONSTITUTION:By pivoting an operating knob 9, a rotor cam 40 is pivoted so as to protrude a moving pin 37 from a rotor 33 in order to insert the pin 37 in an inclined groove 36, resulting in pivoting the rotor 33 down along the inclined groove 36 so as to open a gas extinction safety valve 27. In addition, the pivoting of the operating knob 9 causes to energize an electromagnet 58 for forcibly holding the safety valve 27 open so as to shift a traversing rod in order to shift projections 56 just above the top surface of the rotor 33, resulting in preventing the rotor 33 from ascending and accordingly forcibly holding the gas extinction safety valve 27 open. At the same time or after the gas extinction safety valve 27 is set to the forcibly held state, a thermal relay 59 is operated by the thermoelectromotive force developed at a thermocouple 60 for the thermal relay 59 so as to deenergize an igniter 16 and the electromagnet 58 for forcibly holding open, resulting in releasing an ignition means and a forcibly holding-open means.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heat cooker with a pyro-safety device, such as a gas cooker.

Structure of conventional example and its problems In recent years, the operability of biloft safety device heating cookers such as gas cooking appliances has become important.

The conventional heat cooker with a pilot safety device as described above will be described below with reference to the drawings.

FIG. 1 is a schematic cross-sectional configuration of the main parts of a conventional heat cooker with a pilot safety device, showing the closed state. Figure 2 is a cross-section of the cock in Figure 1, showing the ignition state, Figure 3 is a cross-section of the cock in Figure 1, showing the open state, and Figure 4 is the electrical circuit diagram of Figure 1. It is.

In FIGS. 1 to 4, 1 is an ignition electrode that generates a discharge spark, 2 is a pilot burner that is ignited by the discharge spark of the ignition electrode 1, 3 is a thermocouple that generates a thermoelectromotive force by the flame of the pilot burner 2, and 4 5 is an electromagnet that generates magnetic force by the thermoelectromotive force generated by the thermocouple 3; 5 is a movable iron piece that is attracted by the magnetic force generated by the electromagnet 40; 6 is a safety valve that interlocks with the movable iron piece 5; 7 is a push rod that suppresses and opens the safety valve 6. , 8 is push rod 7
9 is an operating knob that presses the operating shaft q; 10 is a main burner that is ignited by the flame of the pilot burner 2; 11 is a solenoid valve that electrically opens and closes the gas flowing to the main burner 10; 12 is a pilot This is a closure for opening and closing the gas flowing to the burner 2 and the main burner 10, and a push rod 7 is inserted through a hole in the center of the closure. 13 is a closure located above the closure 12! JNOF4.14 is fitted to the lower part of the operating shaft 8, and transmits the rotation of the operating shaft 7 to the closing member 12 with a pin that slides up and down along the closing member 13.

15 is a control circuit switch that opens and closes electricity flowing to the solenoid valve 11, etc.; 16 is an igniter that produces discharge sparks from the ignition electrode 1; 17 is an ignition switch that opens and closes electricity flowing to the igniter; 18 is a control circuit. A switch cam that operates the switch 15 and the ignition switch 17 is attached to the operating shaft 8. 19 is a stopper that prevents the switch cam 18 from coming off the operating shaft 8; 20 is a heating chamber that heats the object to be heated;
1 is a temperature sensing element such as a thermistor that detects the temperature of the heating chamber 20; 22 is a temperature control circuit that is activated by a signal from the temperature sensing element 21; The temperature in the chamber 20 is set to a predetermined temperature.A timer 23 sets the time for supplying electricity to the temperature control circuit 22 and the solenoid valve 11, that is, sets the cooking time;
Reference numeral 4 denotes a cock body, which is equipped with a gas inlet 25 and a gas outlet 26, and a gas fire extinguishing safety valve 27 consisting of an electromagnet 4, a movable iron piece 5, a safety valve 6, etc. is provided near the gas inlet 25 between them. A closure 12 is rotatably inserted between the gas outlet 27 and the gas outlet 26. 28 is a gas vent formed in the closure 12 and always communicates with the gas outlet 26 within a certain angle rotation range, 29 is a power plug, 30 is a timer for rotating the timer 23, and 31 is a pilot safety device. Thermocouple 3. and a gas fire extinguishing safety valve 27.

The operation of the pilot safety device side heating cooker configured as above will be described below.

As shown in FIG. 1, the operating knob 9 is press-fitted into the operating shaft 8, so when the operating knob 9 is rotated counterclockwise, the operating shaft 8 rotates in conjunction. A switch cam 18 is attached to the operation shaft 8.
Since the pin 14 is fitted, the switch cam 18 and the pin 14 rotate in conjunction with the operating shaft 8. First, when the switch cam 18 rotates, the control circuit switch 15 is turned on. Since the pin 14 is inserted into the closure merit 13 at the top of the closure 12, the closure 112 rotates in conjunction with the operating shaft 8 by the pin 14. When the closure 12 rotates, the closure 112 rotates. The formed gas passage hole 28 and the gas outlet 26 communicate with each other.

Next, when the operating knob 9 is pressed, the operating shaft 8 and the switch cam 18 fitted thereto are pushed and hang down as shown in FIG. First, when the switch cam 18 droops, the AB contact ignition switch 17 is turned on, and as shown in Figure 4, the control circuit on the B contact side energizes the igniter 16 on the contact side and emits a discharge spark from the ignition electrode 1 to the pilot burner. Power will no longer be supplied to the Next, when the operating shaft 8 hangs down, the push rod 7 penetrating the hole in the center of the closure 12 is pushed, pushing the safety valve T6 and interlocking with the safety valve 6 +iJ ut! Push the iron piece 5 and press the movable iron piece 5 and the electromagnet 4.

When the safety valve 6 is pressed and opened, gas is already flowing from the gas inlet 25 at the gas fire extinguishing safety valve f27''if, so it flows between the safety valve 6 and the cock body 24 into the closure 12, and the gas is removed. Since the closure 12 is in the open state, the gas vent 28 and the gas outflow IJ 26 (!: are in communication, so the gas flows toward the solenoid valve 11 and the pilot burner 2. However, the solenoid; is not energized yet, so gas does not flow toward the main burner 10.Next, the gas that flows toward the pilot burner 2 has already generated sparks, so the pilot burner 2 ignites. The thermocouple 3 is heated and a thermoelectromotive force is generated, and 'IF
Since the electromagnet 4 and the movable iron piece 5 are pressed against each other, the electromagnet 4 attracts and holds the movable iron piece 5 when the operating knob 9 is held in this state for 5 to 10 seconds.

Next, when the operating knob 9 is released, the push rod 7, operating shaft 8, operating knob 9, and switch cam 18 are raised by the force of the spring as shown in FIG. When the push rod 7 goes up to -, the safety valve 6
is no longer pressed, but since the electromagnet 4 is holding the movable iron piece 5 by suction, it does not rise upwards, so the safety valve 6 remains open.
Next, when the switch cam 18 goes up, the ignition switch 17
is not pressed and the υa contact side is OFF, and the igniter 16 is de-energized and no discharge sparks are produced, and the pb contact side is ON and the control circuit is energized. Next, a pinch of timer 3
When the timer 23 is turned, the timer 23 is activated, the switch of the timer 23 is turned on, and electricity flows to the temperature control circuit 22.

A temperature sensing element 21 is provided in the heating chamber 20 to detect the temperature of the reed heating chamber 20 and input the signal to the temperature control circuit 22. If the temperature of the heating chamber 20 is lower than the set temperature, the temperature control circuit 2
The relay No. 2 is turned on, the solenoid valve 11 is energized, gas flows into the main burner 10, and the flame of the pilot burner 2 ignites the flame, heating the heating chamber 20 and raising the temperature of the heating chamber 20.

Next, when the temperature of the heating chamber 20 becomes higher than the set temperature, the relay of the temperature control circuit 22 is turned OFF, the solenoid valve 11 is de-energized, gas no longer flows to the main burner 10, and the fire is extinguished and the temperature of the heating chamber 20 is lowered. . '' The temperature of the heating chamber 20 is controlled by repeating the above two steps.

Next, when extinguishing the fire, when the operating knob 9 is rotated clockwise, the operating shaft 8 is rotated and the switch cam 18 and the closure 12 are rotated. When the closure 12 rotates, the gas vent 28 rotates and no longer communicates with the gas outlet 25, so the gas flows through the pilot burner 2.
And it stops flowing towards the electromagnetic 1r11. From the above, the pilot burner 2 and the main burner 10 are extinguished.

When the pilot burner 2 goes out, the pilot safety device 3
1 is activated, the thermocouple 3 is no longer heated, so no thermoelectromotive force is generated, the magnetic force of the electromagnet 4 disappears, and the movable iron piece 5 rises due to the force of the spring, and the safety valve 6 linked to it rises. The gas passage closes and becomes the closed state shown in Figure 1.

Next, when the gas supply stops during use, the pyro 7) safety device 31 is activated and the safety valve 6 closes the gas passage, which is the same as when the O pilot burner 2 is extinguished, so that the gas is supplied again. However, no raw gas is emitted.

However, in the above configuration, the pilot burner 2
After ignition, the thermocouple 3 of the pilot safety device 31 is heated by the flame of the pilot burner 2, generating a thermoelectromotive force, which flows to the electromagnet 4 to attract and hold the movable iron piece 5 and hold the safety valve 6 open. This takes about 6 to 10 seconds, during which time the operating knob 9 must be held depressed in the ignition state, that is, in the state shown in FIG. In addition, if the pressing and holding of the operating knob 9 is released too quickly, the pressing body of the operating knob 9 may
If the holding force is weak, the electromagnet 4 of the pilot safety device 31 will not attract and hold the movable iron piece 5, and the safety valve 6 will not be able to hold the open state, and the same operation may be repeated two or three times, making it extremely difficult to use. He had a flaw in his thoughts.

Purpose of the Invention The present invention solves the above drawbacks by automatically igniting the pilot burner number just by turning the operating knob and keeping the gas extinguishing safety switch ``4-?=-'' of the pilot safety device open. The present invention provides a pilot safety device that simplifies the ignition operation and is easy to use.

Structure of the Invention In order to achieve this object, the pilot safety device of the present invention (i) is a heating cooker equipped with an ignition means for igniting the pilot burner by simply rotating an operating knob, and an opening means for opening the gas alignment safety valve. and a thermal relay operated by a thermoelectromotive force of a thermocouple for holding the opening means in a forcibly opened state, and a release means for releasing the ignition means and the forced opening holding means by the operation of the thermal relay. With this configuration, the ignition operation can be performed by simply turning the operating knob, and the opening means presses the gas fire extinguishing safety valve of the pilot safety device to the open state, presses the movable iron piece to the electromagnet, and at the same time, the forced open holding means and ignition means are activated. is activated.First, when the 1jjt opening holding means is activated, the opening means is held open.Next, when the ignition means is activated, the pilot burner is ignited.Next, the two thermocouples are simultaneously heated by the flame, and one The thermoelectromotive force generated from the thermocouple flows to the electromagnet of the gas Kirie safety valve, which attracts and holds the movable iron piece and holds the safety valve open.The thermoelectromotive force generated from the other thermocouple flows to the thermal relay and closes the safety valve. At the same time or after the valve enters the open holding state, the releasing means is actuated to release the ignition means and the forced open holding means, and the Ganu-Oka safety valve can be held open using only the thermoelectromotive force of the thermocouple. As a result of the above, the ignition operation becomes easier and the usability improves.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 5 is a schematic cross-sectional configuration of the main parts of the heat cooker with pilot safety device according to the present invention, showing the closed state. FIG. 6 shows a cross section of the cock portion shown in FIG. 6, which has been rotated by about 10 degrees. Figure 7 is a cross-section of the cock in Figure 5, showing the ignition position; Figure 8 is a cross-section of the cock in Figure 5, showing the open state; Figure 9 is a cross-section of the cock in Figure 5, showing the ignition position;
The rotor part NN cross section in the figure shows the closed state, and FIG. 10 shows the rotor part cross section of FIG. 5 in the state rotated by about 10 degrees.
Fig. 11 is a cross section of the rotor section in Fig. 5, showing the state of the ignition position, Fig. 12 is a cross section of the rotor section in Fig. 5, showing the open state, and Fig. 13 is the cam of Fig. 5. Figure 14 shows the closed state in the cross section of the cam part in Figure 5. Figure 15 shows the state in the ignition position in the cross section of the cam part in Figure 5. 16 is a cross-sectional view of the cam section shown in FIG. 5, showing the open state. FIG. 17 shows the rotation process of the movable pin and the operating knob when the fixed cylindrical cam and rotor of FIG. 5 are unfolded. 18 shows the electric circuit of FIG. 5, and FIG. 19 is an exploded perspective view of the cock part of FIG. 5, showing the relationship with the rotational position. In FIGS. 5 to 19, reference numeral 32 denotes a push rod 7 provided loosely through the hole in the center of the closure 12.
A buffer spring that pushes moderately, 33 is a buffer spring 3
2, a rotor 34 is a closure slit groove located at the top of the closure 12, and the rotor 33 is inserted into the closure slit groove 34 so that it can slide only up and down, and the rotation of the rotor 33 is 35 is a fixed cylindrical cam having a movable rotor 33 therein, and 36 is a fixed cylindrical cam 3.
37 is a movable pin that slides along the slanted groove 36 and is provided so that it can freely pass through the hole in the peripheral wall of the rotor 33. 38 is a movable pin that slides along the slanted groove 36 and is provided in a state that it can freely pass through the hole in the peripheral wall of the rotor 33. 36 is a presser handle to be inserted, 39 is a presser plate shaft that supports the presser plate 38 in a movable state, 40 is a rotor cam that presses the presser plate 38 and is installed inside the rotor 33, 41 is a rotor 33 42 is a rotor cam stop A that restricts the relative rotation between the rotor 33 and the rotor cam 40 in the closing direction. B regulates the ignition direction; 43 is a rotor lid that rotatably supports the rotor cam 40; 44 is a rotor cam slip groove provided on the upper part of the rotor cam 40; 45
46 is a pin that fits into the lower part of the operating shaft 45 and is inserted into the rotor sleeve (K44). 47 is a pin that is inserted into the rotor sleeve) K44. The inserted cam 48 is a stop ring that prevents the cam 47 from coming off the operating shaft 45, and is clamped in the groove of the operating shaft 45.
49 is a fixed cylindrical cam lid that pivotally supports the operating shaft 45, and is fixed to the fixed cylindrical cam 35 with a screw. 50 is a fixed cylindrical cam lid that is attached to the fixed cylindrical cam lid 49 (1 is pushed by the cam 47 with a cam switch). 51 is a stopper that restricts the rotation range of the operating shaft 45 and is provided on a part of the cam 47. 52 is a stopper provided on the fixed cylindrical cam lid 49 and A restricts the closed position. 53 is a slide groove provided in the upper part of the fixed cylindrical cam 35, 541d, which regulates the ignition position with a stopper stop B provided on the fixed cylindrical cam flange 49; 55 is a lateral moving body provided in the slide groove 54 in an M-piercing state; A fixed cylindrical cam cover 49 is provided so that the lid does not come off the slide groove 54, and is slidable in the horizontal direction. 56 is a protrusion provided at the bottom of the transverse moving body 55 to prevent the rotor 33 from lowering. 1・
.

At the same time, the rotor 33 moves due to the upper surface of the rotor 33, and the rotor 33 becomes hf.
57 is a plunger connected to the transverse moving body 55, 58 is an electromagnet for holding the forced opening that attracts the plunger, and 59 is a gas extinguishing safety valve 27 that prevents the electromagnet 58 for holding the forced opening and the igniter 16 from being energized. is a thermal relay that stops at the same time or after opening and holding, 60 is a thermal relay 59
A thermocouple for thermal relays that generates thermoelectromotive force to operate.

The following configuration is the same as that shown in FIG.

1 is an ignition electrode, 2 is a pilot burner, 3 is a thermocouple, 4
is an electromagnet, 5 is a movable iron piece, 6 is a safety valve, 7 is a push rod, 9
is the operation knob, 10 is the main burner, 11 is the solenoid valve, 1
2 is a shutter, 16 is an igniter, 20 is a heating chamber, 21 is a temperature sensing element, 22 is a temperature control circuit, 23 is a timer, 24 is a cock body, 25 is a gas inlet, 26 is a gas outlet, 27 is Gas fire safety valve, 28 is gas vent, 29 is power plug,
30 is a timer knob, and 31 is a pilot safety device.

The operation of the pilot safety device additional heat cooker configured as described above will be described below. First, since the operating knob 9 is press-fitted into the operating shaft 45, the operating knob 9
The operating shaft 45 rotates in conjunction with the
When rotated 0° counterclockwise, the operating shaft 4 will move as shown in Figure 6.
Since a pin 46 with an 11X attachment is inserted into the rotor cam nut 7u44 at the bottom of the rotor cam 40, the rotor cam 40 rotates in conjunction with the operation shaft 45. Then, the rotor cam 40 rotates as shown in FIG. Press the presser plate 3B supported by the presser plate shaft a9 and push the movable pin 37, which is provided in a state that it can freely pass through the hole in the circumferential wall of the rotor 33. Next, the movable pin 37 is provided in the circumferential wall of the rotor 330. It is pushed out from a certain hole and inserted into an inclined groove 36 provided on the inner wall of the fixed cylindrical cam 35,
When the rotor cam 40 hits the rotor cam abutment 842, rotational force is applied to the rotor 33, causing the rotor 33 to rotate.Since the iJ moving pin 37 is inserted into the inclined groove 36, the rotor 33
When the rotor 33 rotates, the rotor 33 rotates and descends into the inclined groove a6.The rotor 33 is inserted into the closing slit groove 34 so that it can slide only up and down, so the rotor 33 rotates. When the movement descends, the rotor 33 moves the shutter 1 as shown in Fig. 7.
As 2 rotates, a push rod 7, which is inserted through a hole in the center of the closure 12, is pushed down via a buffer spring 32, and the safety valve 6 is then pushed down by the push rod 7, ensuring pilot safety. Gas fire extinguishing safety valve 2 forming part of the device 31
The movable iron piece 5 of No. 7 is pressed against the electromagnet 4. Next, when the operating knob 9 is rotated a little more, the cam 47 inserted into the operating shaft 45 pushes the cam nut 50 as shown in Fig. 15.
N, the igniter 16 and the electromagnet 58 for holding the forced opening are energized. First, when the igniter 16 is energized, a discharge spark is emitted from the ignition electrode 1 toward the pilot burner 2. Next, the electromagnet 58 for holding the forced opening is energized. When energized, the plunger 57
The plunger 57 and the transverse rod 55 are connected, and the foot rotor 33 is lowered from the protrusion 56 provided at the lower part of the transverse rod 55.
7, the protrusion 56 is pulled up to just above the upper surface of the rotor 33.
moves laterally.Next, as shown in FIGS. 7 and 15, turn the operating knob 9 until the ignition position, that is, the stopper 51 touches the nut pad B53, and release the operating knob 9 at that position. As shown in the figure, the movable pin 3 is moved by a spring.
7 is pushed back and the presser plate 38 is pushed back. Next, the rotor cam 40 is pushed and rotated by the presser plate 38, and the first movement stops when it hits the rotor cam stopper A41. As a result, i
The movable pin 37 has an inclined groove 36 provided in the fixed cylindrical cam 35.
Therefore, the rotor 33 is pushed upward by the spring, but since the protrusion 56 of the horizontal movement rod 55 moves directly above the upper surface of the rotor 33, the rotor 33 The cam 47 hits the protrusion 56 of the lateral movement rod 55, and the cam 47 also rotates as shown in Fig. 16, but the cam switch 50 remains ON.

Therefore, even if the operating knob 9 is not in the ignition position but in the open position, the rotor 33 will use the buffer spring 32 as an intermediary to push the push rod 7, press the safety valve 6, open the gas passage, and move the movable iron piece 5 to the electromagnet. When the safety valve 6 is opened, the gas flows to the pilot burner 2 and the electromagnetic nozzle 111 because the gas vent 28 formed in the closure 12 and the gas outlet 1'' 26 are in communication. Gas flows out from 2. Since the igniter 16 is already energized and a discharge spark is emitted from the ignition electrode 1 toward the pilot burner 2, the pilot burner 2 is ignited.Next, the thermocouple 3 is heated by the flame of the pilot burner 2 and a thermoelectromotive force is generated. is generated and flows to the electromagnet 4, which attracts and holds the movable iron piece 5 that is already in pressure contact with the electromagnet 4. As a result, the gas fire extinguishing safety valve 27 is kept open. It is heated by the flame of 2, a thermoelectromotive force is generated, which flows to the thermal relay 59 and the gas fire extinguishing safety valve 2.
7 is activated at the same time or after the opening is held, so that the igniter 16 and the forced opening holding electromagnet 58 are no longer energized, and the timer 23 is energized. First, the igniter 16 is energized. When the spark disappears, the discharge spark stops.Next, when the electromagnet 58 for holding forced opening is no longer energized, the magnetic force that attracts the plunger 57 disappears, and the horizontal movement rod 55 and the plunger 57 connected to it are moved by the spring. When the lateral moving body 55 moves to the left due to the force, the protrusion 56 protruding from the lower part of the lateral moving body 55 becomes detached from the surface of the second part of the rotor 33, as shown in FIG. The rotor 33 is pushed by the spring and moves to JJ, and the push rod 7 is no longer pushed and the till L rod 7 also rises due to the spring, and the safety valve 6 is no longer pushed and the forced opening holding means is released, but the electromagnet 4 has already reached the iJ moving iron piece. 5 is held by suction, the safety valve 6 remains open. Next, by rotating the timer knob 30, the timer 23 is activated, the switch of the timer 23 is turned on, and the temperature control circuit 22 is energized. When energized, a temperature sensing element 21 is installed in the heating chamber 20. Detects the temperature of the heating chamber 20 and sends the signal to the temperature control circuit 22. At the beginning of use, the temperature of the heating chamber 20 is lower than the set temperature, so the relay of the temperature control circuit 22 is turned on, and the solenoid valve 1 is turned on.
1 is energized, a gas passage is opened, gas flows to the main burner 10, and the flame of the pilot burner 2 ignites the heating chamber 2.
0 is heated to raise the temperature of the heating chamber 20. Next, when the temperature of the heating chamber 20 becomes higher than the set temperature, the relay of the temperature control circuit 22 is turned OFF, and the electromagnetic nozzles 1 and 11 are not energized and the gas passage is closed. When the gas stops flowing to the main burner 10 and the main burner 10 is extinguished to lower the temperature of the heating chamber 20, then when the temperature of the heating chamber 20 becomes lower than the set temperature, the relay of the temperature control circuit 22 is turned on and the solenoid valve 11 is turned on. Electricity is applied, a gas passage is opened, gas flows to the main burner 10, is ignited by the flame of the pilot burner 2, heats the heating chamber 20, and raises the temperature of the heating chamber 20. The above process is repeated to control the temperature of the heating chamber 20. When the set time of the timer 23 has passed, the timer 23 is turned off, the solenoid valve 11 is no longer energized, and the main burner 10 is extinguished.

Next, when extinguishing the fire, when the operating knob 9 is rotated clockwise, the operating shaft 45 rotates in conjunction with the operating knob 9, and the cam 47
, rotates the rotor cam 40, rotor 33, and closing member 12 clockwise.When the cam 47 rotates, the cam switch 50
is no longer pressed and turns OFF, and all electrical circuits are no longer energized. Next, when the rotor cam 40 rotates, the first
As shown in Figure 2, the U-rotor cam 40 is in contact with the rotor cam rest A41 provided in the recess of the rotor 33, so the rotor 2
3 in the clockwise direction, the rotor 33 is inserted into the closure slit groove 13 provided at the top of the closure 12.
The closure 12 also rotates in conjunction, and the gas vent 28 formed in the closure 12 no longer communicates with the gas outlet 126.
When the pilot burner 2 is extinguished, the pilot safety device 31 is activated, that is, the thermocouple 3
is no longer heated, no thermoelectromotive force is generated, and the electromagnet 4 of the gas fire extinguishing safety valve 27 does not have enough magnetic force to attract and hold the movable iron J-15. Since the safety valve 6 is interlocked with the safety valve 6, the safety valve 6 is also placed in the upper row to close the gas passage, and the thermal relay thermal relay pair 60 is no longer heated by the pilot burner 2, so no thermoelectromotive force is generated and the thermal relay 5
9 is turned OFF, and the rotation of each part is as shown in FIG. 13, when the stopper 51 hits A52 with the nut sopar, as shown in FIGS. 5 and 9.

Next, if the gas supply is stopped during use, the pilot safety device 31 will operate and the safety valve 6 will close the gas passage, just as when the burner 2 extinguishes the gas. Even if gas is supplied, no raw gas will be emitted. If the thermal relay 59 is still OFF and its contacts are switched, the solenoid valve 11 is not energized, but the igniter 16 and the forced opening electromagnet 58 are energized.When the igniter 16 is energized first, the pilot burner 2 is energized. A spark appears to indicate that the fire has been extinguished. Next, when the forced opening electromagnet 58 is energized, the plunger 57 is about to be attracted, but the protrusion 56 of the lateral movement frame 55 connected to the plunger 57 hits the peripheral wall of the rotor 33 and stops, so the plunger 57 tries to be attracted. Even if gas is supplied, raw gas will not come out.

As described above, according to this embodiment, the rotor cam 40 is rotated by rotating the operating knob 9, and as a result, the movable pin 37 protrudes beyond the rotor 33 and is inserted into the slanted groove 36. rotates downward along the inclined groove 36 to open the gas fire extinguishing safety valve 27, and the lateral movement frame 55 moves to open the protrusion 56.
moves directly above the upper surface of the rotor 33, and the rotor 33 moves upward (
A forced open holding means is provided to forcefully hold the gas fire extinguishing safety valve 27 open so that the gas fire extinguishing safety valve F27 is held open, and at the same time or after the gas fire extinguishing safety valve F27 is held open, the thermal relay 59 is activated by the thermoelectromotive force generated from the thermal relay thermocouple 60. By activating the igniter 16 and the forced opening holding electromagnet 58 to stop the energization and releasing the ignition means and the forced opening holding means, the ignition operation can be simplified and the usability can be improved.

Effects of the Invention As described above, the present invention includes an opening means for opening the gas fire extinguisher (safety gas extinguisher) by simply rotating an operating knob, and a forced opening holding means for forcibly holding the opening means in the open state. By providing a release means for releasing the forced open holding means using a thermal relay at the same time or after the gas fire extinguishing safety J is set to the open holding state, the ignition operation can be simplified and the usability can be improved, and its practical use can be improved. The effects are huge.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main parts of a conventional heat cooker with a pilot safety device showing the cock in the closed state, Fig. 2 is a sectional view of the cock part showing the ignition state of Fig. Figure 4 is the electric circuit diagram of Figure 1, and Figure 5 is the main part of the heat cooker with pilot safety device, which is an embodiment of the present invention, showing the cock part in the open state. 6 is a sectional view of the cock part shown in a state rotated by about 10 degrees from FIG. 5; FIG. 7 is a sectional view of the cock part showing the state of the ignition position in FIG. A sectional view of the cock part showing the open state in Figure 5;
9 is a cross-sectional view of the rotor section showing the closed state of FIG. 5, FIG. 10 is a cross-sectional view of the rotor section showing the state of FIG. 5 rotated approximately 10 degrees, and FIG. FIG. 12 is a cross-sectional view of the rotor section showing the ignition position shown in FIG. 5. FIG. 13 is a cross-sectional view of the rotor section showing the open state shown in FIG. 14 is a cross-sectional view of the cam section showing the state rotated by about 10 degrees from FIG. 5; FIG. 15 is a cross-sectional view of the cam section showing the state of the ignition position of FIG. 5; FIG. 16 are cross-sectional views of the cam part showing the open state in FIG. 5, FIGS. 17(a) and (b),
(C) is an operation explanatory diagram showing the relationship between the rotation process of the movable pin and the rotation position of the operating knob when the cam and rotor are expanded as shown in Figure 5, and Figure 18 is the diagram shown in Figure 5. electrical circuit diagram,
Fig. 19 (■, (b) is an exploded perspective view of the cock part in Fig. 5. 1. Ignition electrode, 2. Pyrono 1-burner, 3. Thermocouple (sensing element), 4. Electromagnet, 5. I1J moving iron ha). , 6...
Safety ``, 7...Push rod, 9...Operation knob, 10...Main burner, 12 Closing element, 13 Closing element slit?+'&
, 27...Gas fire extinguishing safety No. 1 (Gas safety) [), 31
...Pilot safety device, 32・Buffer spring, 3
3... Rotor, 34... Closer groove, 35...
Fixed cylindrical cam, 36... Inclined groove, 37- iiJ moving bottle, 38... Holding plate, 39... Holding plate shaft, 40- Rotor cam, 43... Rotor lid, 44- Rotor cover. , slit groove, 45... operating shaft, 46 pin, 47 cam,
49...Fixed cylindrical cam lid, 50...Cam switch, 54...Slide groove, 55...Transverse movement frame, 56...
Projection, 57 Plunger, 58... Forced open holding electromagnet, 59... Thermal relay, 60... Thermocouple for thermal relay. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 6
Figure 48 q Figure 8 Figure 9 Figure 1 1 ['? n Figure 13 Figure 14 Figure 15 Figure 16 Figure 1117 Figure 18 5θ Figure 19 Figure 19 (b)!

Claims (1)

[Claims] means for opening and closing gas supply paths to the pilot burner and the main burner by rotation; ignition means for igniting the pilot burner; two detection elements for detecting ignition of the pilot burner; −
, a gas safety valve that opens and holds the gas supply path to the pilot burner and the main burner in response to a signal from one of the detection elements, and opening means that opens the gas safety valve by simply rotating an operating knob; forced opening holding means for holding the opening means in the open state; and n1 at the same time or after the gas safety valve enters the open holding state.
j) A thermal cooker with a pilot safety device, comprising: a thermal relay activated by a signal from another detection element; and a release means for releasing the ignition means and the forced open holding means by the operation of the thermal relay V-.