KR101799303B1 - Gas range - Google Patents

Abstract

If the ignition operation is performed while the forced ignition switch is pressed, if the burner can be ignited even when the cooking apparatus is not placed on the container base, if the forced ignition switch is turned on and fails, There is a case where the burner is ignited in a state in which the cooking utensil is not laid.
A nonvolatile memory is provided for storing the occurrence of the on-fault when the duration of the on-state of the forced-ignition switch is estimated and the time exceeds the on-fault determination time, so that at least the on- Is not stored, the prohibition of ignition by the ignition inhibition means is canceled.

Description

[0001] GAS RANGE [0002]

The present invention has a pot bottom sensor for detecting that a cooking device is placed on a burner and when the pot bottom sensor detects that the cooking device is placed on the burner and an ignition operation is performed on the burner, And an ignition inhibiting means for inhibiting ignition of the gas.

In the gas stove apparatus, since the burner is exposed on the top plate, which is the upper surface of the apparatus, if the burner is ignited while the cooking apparatus is not placed on the burner, the whole flame is exposed. Thereby, there is provided a pot bottom sensor for detecting that the cooking apparatus is placed on the burner, and an ignition inhibiting means is provided which does not ignite the burner even if the ignition operation is performed in a state in which the cooking apparatus is not mounted.

However, there is a case where the burner is temporarily ignited in a state where the cooking utensil is not placed on the burner, for example, in the case of burning steam. In this case, when a forced ignition switch is provided and a normal ignition operation is performed in advance, and the forced ignition switch is pressed in a state in which the ignition of the burner is prohibited by the ignition inhibiting means, And ignition is prohibited to ignite the burner (for example, refer to Patent Document 1).

However, in this gas stove apparatus, when the burner is ignited without putting the cooking device on the burner, the burner is ignited even if the normal ignition operation is performed, and then the burner is ignited by pressing the forced ignition switch. As a result, the burner is ignited by a familiar ignition operation such as pushing the ignition button, and the burner is ignited by the pushing operation to the forced ignition switch, which is completely different from the normal ignition operation, . Particularly, since the cooking apparatus is not placed on the burner, the user feels that the flame generated by the ignition suddenly occurs.

Accordingly, the present applicant has proposed a patent application No. 2014-250774, in which a forcible ignition switch which is turned on only during a pressing operation is provided, the ignition operation is performed in a state in which the forcible ignition switch is depressed, When the enforced ignition switch is turned on at the time when energization is started, the ignition prohibition by the ignition inhibition means is canceled to permit ignition of the burner.

JP 2013-234764 A

However, in the prior application, the ignition of the burner is permitted when the forced ignition switch is pressed during ignition. However, even if the forced ignition switch is not turned on due to a failure, that is, In the case where a failure occurs, in fact, even if the forced ignition switch is not pressed, it is inappropriately operated that the same operation as in the case of being pressed is generated.

SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a gas stove apparatus which does not cause inadequacy even if the forced ignition switch is turned on during ignition.

In order to solve the above problem, the gas stove apparatus according to the present invention is provided with a pan bottom sensor for detecting that the cooking apparatus is placed on the burner, and in a state in which it is not detected that the pan bottom sensor is placed on the cooking apparatus And a control unit for controlling the ignition to the burner in the gas stove apparatus having the ignition inhibiting means for inhibiting the ignition to the burner when the ignition operation is performed on the burner, And when it is judged that the ignition switch has been turned on from the on state of the forced ignition switch, the ON failure occurrence is stored in the memory And the ignition operation is performed in a state in which the forced ignition switch is depressed When the ignition switch is turned on at the time when energization of the control unit is started and when the occurrence of the ON failure is not stored in the nonvolatile memory, The ignition of the ignition coil is permitted.

The forced ignition switch is not ignited by itself, but the forced ignition switch is depressed as an assist for the ignition operation only and the same operation as the normal ignition operation is performed in the state where the forced ignition switch is pressed, The energization is started, and the control unit permits ignition of the burner when the forced ignition switch is turned on at the time when energization is started. However, when the forced ignition switch is turned on, the control unit judges that the forced ignition switch is pressed even if the forced ignition switch is not actually operated. Therefore, when it is determined that the ignition switch has been turned on in the ON state of the forced ignition switch, a non-volatile memory for storing the occurrence of the ON failure is provided. When the energization of the control section is started, And when the occurrence of the ON failure is not stored in the nonvolatile memory, the prohibition of ignition by the ignition inhibition means is canceled and the ignition of the burner is permitted.

Specifically, in the case where the duration of the on state of the forced ignition switch is estimated and the time exceeds the on-failure determination time, or in the case where the forced ignition switch is turned on at the time of extinguishing, It is judged that a switch-on fault has occurred.

Further, if the cooking apparatus is placed on the container base, even if the forced ignition switch is turned on, the gas burner ignites, so that the inadequacy does not occur. Therefore, it is preferable that the pot bottom sensor permits the ignition of the burner even if the occurrence of the ON failure is stored in the nonvolatile memory if it is detected that the cooking utensil is placed on the pot bottom sensor.

In addition, it is preferable to delete the occurrence of the ON failure stored in the nonvolatile memory by manual operation of the gas stove unit, for example, when the forced ignition switch is turned off.

In addition, when the forced ignition switch is turned from a turned-on state to a turned-off state, the occurrence of a turn-on fault stored in the nonvolatile memory may be deleted.

As apparent from the above description, in the present invention, ignition of a burner is permitted by performing a normal ignition operation in a state in which the forced ignition switch is pressed, so that when the cooking apparatus is not placed on the burner , The burner is ignited without feeling discomfort. When the forced ignition switch is turned on and off, the burner is not ignited, thereby preventing unexpected operation of the user.

Brief Description of the Drawings Fig. 1 is a view showing an outer appearance of a gas heating apparatus according to the present invention. Fig.
2 is a block diagram showing a gas pipe to the burner.
3 is a block diagram showing the configuration around the control unit.
4 is a diagram showing a control flow by the control unit.

1, reference numeral 1 denotes a gas heating apparatus according to the present invention. Two top and bottom burners 12 are provided on the top plate 11 of the gas stove apparatus 1. Both the burners 12 are annular, and a pan bottom sensor 13 extending from the lower side to the upper side is provided in the center space. A temperature sensor is built in the upper end of the pan bottom sensor 13, and the pan bottom sensor 13 is freely moved up and down in a state of being stuck in the upper part. When the frying pan FP is placed on the upper side of the burner 12 as the cooking device, for example, the upper end of the pan bottom sensor 13 is brought into close contact with the pot bottom B of the frying pan FP by buoyancy, It is pressed down.

When cooking is started in the state that the frying pan FP is placed like this, the ignition button 2 is pressed. Then, the burner 12 is ignited, and the cooking can be started. A thermocouple 14 is disposed in the vicinity of the burner 12. Detection of the flame of the burner 12 by the thermocouple 14 can detect the ignition of the burner 12 and the occurrence of the ignition . Reference numeral 10 denotes a battery box, which is configured to supply the operating power of the gas stove unit 1 to a battery accommodated in the battery box 10.

A forced ignition switch 3 is provided above the ignition button 2. The forced ignition switch 3 is a switch for allowing ignition of the burner 12 even when the cooking apparatus is not placed on the burner 12. For example, do. "Grilled" refers to a work for baking, for example, in a state in which no cooking utensil is placed. Further, the forced ignition switch 3 is also pressed by pressing it at the time of " hot roasting " cooking.

The "high-temperature roasting" cooking is a cooking which usually becomes a high temperature when the temperature of the pot bottom (B) is lit in a waterless pot. For example, when a very small amount of food is placed in a frying pan And the like. And, 31 is an LED.

Referring to Fig. 2, when the ignition button 2 is depressed, the operating lever 22a of the thermal power control device 22 enters the thermal power control device 22. The fire control device 22 is provided with two microswitches SW1 and SW2 which are not shown in the drawing. The switch SW1 is turned on first during the movement of the operating lever 22a, SW2 is turned on at the push limit position. The valve body of the electromagnetic safety valve 23 is forcibly opened at the pushing limit position where the switch SW2 is turned on, and the valve body is attracted and held in the open state by the electromagnet in the electromagnetic safety valve 23. [

When the electronic safety valve 23 is opened, the gas flows into the thermal power control device 22 and flows out through the thermal power control device 22 toward the burner 12. The outflow flow rate is increased or decreased by operating the thermal power control lever 21. [

The gas flowed out from the thermal power control device 22 flows to the first opening / closing valve 24. When the first opening / closing valve 24 is open, the gas flows downstream without adjusting the flow rate, but the first opening / closing valve 24 is closed When closed, a small amount of gas defined by the orifice 25 flows downstream. When the second on-off valve 26 is closed, the integrated gas is not supplied to the burner 12. [ The pot bottom sensor 13 is provided with a micro switch 13a and when the pot bottom sensor 13 is pushed down by placing a cooking device such as a frying pan FP as described above, And it is possible to detect that the cooking appliance is placed on the burner 12. [

3, a control unit 4 is provided in the gas stove apparatus 1. The control unit 4 controls the opening and closing of the electromagnetic safety valve 23 and the operation of the first opening / closing valve 24, the second opening / closing valve 26, And the operation of the sparkler 15 and the input of the turn signal of the micro switch SW2 and the micro switch 13a and the input of the turn signal of the pan bottom sensor 13 or the temperature detection signal of the thermocouple 14 Is input.

The control contents by the control unit 4 will be described with reference to Fig. When the ignition operation is performed, if the ignition button 2 is pressed while the normal cooking is performed and when the ignition is performed in the state where the cooking apparatus is not placed, the forced ignition switch 3 ( Press and hold the ignition button (2) while pushing the hot roasted SW). In either case, since the control section 4 is in an unapplied state, the control section 4 can not detect what kind of operation is being performed in the PS.

When the ignition button 2 is depressed, the switch SW1 is turned on during the depressing operation, and the electric power from the dry battery is supplied to the control section 4 at that time. Then, the control unit 4 immediately confirms whether the forced ignition switch 3 (roasted hot roast SW) is in an on state (S1a). This forced ignition switch (3) (roasted hot roast SW) is a non-locking switch that performs momentary operation. It is turned on only while the push operation is being performed, and returns to the off state when the push operation is stopped. During normal cooking, as described above, the forced ignition switch 3 (roasted hot roast SW) is not turned on.

However, if the forced ignition switch 3 is turned on, the forced ignition switch 3 is turned on even if it is not pushed. Thus, a nonvolatile memory such as an EEPROM is installed, and it is determined whether or not the fact that a failure has occurred in the nonvolatile memory is stored (S1b).

If the ON failure information is not stored, the process proceeds to S100. However, if the bulb hot switch 3 is not ON, or if the ON failure information is stored in the non-volatile memory, the process proceeds to S2.

Proceed to S2 to check whether the microswitch 13a (pan-less detection switch) is turned on. In addition, even if the forced ignition switch 3 (grilled hot roast SW) is continuously pressed, the ignition operation is carried out without depressing the forced ignition switch 3 (roasted hot roast SW) The operation proceeds to S2. Here, when the micro switch 13a (pot-free detection switch) is turned off, the ignition operation is performed without putting the cooking utensil, so that ignition of the burner 12 is not performed and ignition is prohibited (S3) It corresponds to prohibition means.

On the other hand, if the micro switch 13a (pot-free detection switch) is turned on, the cooking device is placed on the burner 12, so that the first open / close valve 24 is opened, The valve 26 is opened to operate the sparker 15 to ignite the burner 12 (S4). When ignition of the burner 12 is confirmed by the detection signal from the thermocouple 14 (S5), the process proceeds to the normal thermal power control (ND). In this normal firepower control ND, the microswitch 13a (no-pan detecting switch) is always monitored (S6). When the cooking instrument is lifted and the microswitch 13a The first opening / closing valve 24 is closed and the flow rate of the gas is squeezed in the orifice 25 to make the thermal power weak (step S8). Also, in the normal firepower control (ND), the forced ignition switch 3 (roasted hot roast SW) is always monitored. When the forced ignition switch 3 (roasted hot roasted SW) is continuously depressed for 3 seconds, The process proceeds to the high temperature thermal power control (HD) described later (S7).

Then, when the early mechanism is lifted by the normal firepower control (ND) and the state is maintained for 60 seconds (S9), the burner 12 is extinguished as a no pot error (S12) The first open / close valve 24 is opened to return the thermal power to strong fire and return to normal thermal power control ND (S10, S11).

Returning to the beginning of this flow, when the forced ignition switch 3 (roasted high temperature roasting SW) is turned on at the time when the power to the control unit 4 is turned on, the process proceeds to S100, and the ignition . In this state, the oil overheating prevention function is still set to the normal mode. The oil overheating prevention function is a function of monitoring the pot bottom temperature of the cooking utensil with the pot bottom sensor 13 and controlling the thermal power by opening and closing the first opening / closing valve 24 so that the pot bottom temperature does not exceed the overheat temperature .

Subsequently, when the forced ignition switch 3 (roasted hot roast SW) is in the ON state for more than 3 seconds (S101, S102), the temperature controlled by the oil overheating prevention function is raised to perform the high temperature fried cooking Temperature mode (S103). Then, when the microswitch 13a (pot-free detection switch) is turned off, the function of weakening the thermal power is released to maintain the intense fire (S104). Although not shown in this flow, such high temperature thermal power control (HD) automatically extinguishes the burner 12 for 30 minutes. During the transition to the high-temperature thermal power control (HD), the LED 31 is turned on or flickered to notify the high-temperature thermal power control (HD) state.

When the forced ignition switch 3 (roasted high-temperature roasting SW) is pressed (S105) in a high-temperature firepower control (HD) state, the high temperature firepower control HD is escaped to return the oil overheat- (S106), the process proceeds to the normal thermal power control (ND) described above. If the forced ignition switch 3 is in the ON state for 15 seconds, it is judged that the ignition switch 3 has been turned on, and the occurrence of the ON failure is stored in the nonvolatile memory, and at the same time, (S107, S108). When it is determined that the ON failure has occurred, the occurrence of the ON failure is notified by the lamp or the buzzer provided in the gas stove apparatus 1. [

In step S101, when the forced ignition switch 3 (roasted high temperature roasting SW) is turned off before three seconds have elapsed, the ignition is confirmed in S5 and then the routine is shifted to the normal firepower control (ND).

In this case, there is no flow in S5, and it may be controlled to flow to S3 only at the time of ignition operation so as to inhibit ignition.

However, the switch for resetting the non-volatile memory may be provided in the gas-tightening apparatus, and the occurrence of the ON failure stored in the non-volatile memory may be eliminated by manual operation of the reset switch.

When the forced ignition switch is turned from the on state to the off state, the on-fault occurrence stored in the non-volatile memory may be deleted.

In the flow shown in Fig. 4, the burner 12 is first ignited at S100 before confirming that the forced ignition switch 3 (roasted high-temperature roasting SW) is continued for 3 seconds and pressed at S102. However, The ignition is not performed at the timing, and the forced ignition switch 3 (roasted high-temperature roasting SW) is continued for three seconds at S102 and it is confirmed that the push operation is performed.

If the ON failure information is stored in the nonvolatile memory in S1b, the process proceeds to S2. However, in this case, it may be so arranged that the subsequent ignition is prohibited without proceeding to S2.

However, in the above embodiment, when the forced ignition switch 3 is in the on state for 15 seconds, it is determined that the forced ignition switch 3 has been turned on, and the occurrence of the on fault is stored in the nonvolatile memory. It is judged that the ignition switch 3 has been turned on and the occurrence of the ON failure is stored in the nonvolatile memory if the forced ignition switch 3 is in the on state.

The present invention is not limited to the above-described embodiment, and various modifications may be made without departing from the gist of the present invention.

1: Gas stove unit 2: Point light button
3: forced ignition switch 4:
12: Burner 13: Pot bottom sensor
21: Thermal power control lever 22: Thermal power control device
23: electronic safety valve 24: first opening / closing valve
25: Orifice 26: Second open / close valve

Claims (5)

And a pot bottom sensor for detecting that the cooker is placed on the burner. When the pot bottom sensor detects that the pot is placed on the cooking apparatus, ignition of the burner is performed And a control unit for controlling the ignition of the burner, wherein the control unit is configured to start energizing the control unit during the ignition operation, and the ignition switch is turned on only during the pressing operation And a non-volatile memory for storing the occurrence of the on-failure when it is determined that the on-ignition switch has been turned on in the on-state of the forcible ignition switch, The ignition operation is performed, and when the energization of the control unit is started, the forced ignition switch In the case of the load state, and, when no ON is not stored fault occurs in the non-volatile memory, a gas heater and wherein for permitting the ignition of the burner to turn off the ignition prohibition by said ignition inhibiting means. The method according to claim 1,
The forced ignition switch is turned on when it is determined that the duration of the on state of the forced ignition switch has exceeded the predetermined time and the forced ignition switch is in the on state at the time of extinguishing, And judges that a failure has occurred. The method according to claim 1,
Wherein the pot bottom sensor permits ignition to the burner even if the pot bottom sensor detects that the cooking device is mounted and that the occurrence of the ON failure is stored in the nonvolatile memory. The method according to claim 1,
Characterized in that the on-fault occurrence stored in the nonvolatile memory can be deleted by a manual operation of the gas stove unit. The method according to claim 1,
Wherein when the forced ignition switch is turned from a turned-on state to a turned-off state, the occurrence of a turn-on fault stored in the non-volatile memory is deleted.

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