JP7043054B2 - Gas stove - Google Patents

Description

The present invention relates to a gas stove.

A gas stove that operates the operation unit when the burner is ignited and extinguished is known. For example, the gas stove device described in Patent Document 1 is provided with a micro switch that turns on and off two contacts according to the pressing operation of the point fire extinguishing button. At the time of ignition, the first contact is turned on while the point fire extinguishing button is pushed from the fire extinguishing position to the ignition position on the inner side thereof. When the first contact is turned on, the gas stove device energizes the control unit and supplies the holding current of the electromagnetic safety valve. The point fire extinguishing button protrudes to the combustion position on the front side of the fire extinguishing position when the hand is released at the ignition position. The first contact is turned off when the point fire extinguishing button is pushed inward from the combustion position when the fire is extinguished and returns to the fire extinguishing position. When the first contact is turned off, the gas stove device stops supplying the holding current to the electromagnetic safety valve and stops energizing the control unit.

Japanese Unexamined Patent Publication No. 2016-61495

When the control unit is driven by energization of the gas stove, the LED displaying the thermal power, the liquid crystal display of the operation panel, and the like are turned on. For example, when the point fire extinguishing button is inadvertently pushed in, even if the pushing is shallow and the ignition operation is not reached, in Patent Document 1, the LED and the liquid crystal display are lit even though the burner is not ignited. Therefore, the user may be confused.

An object of the present invention is to provide a gas stove that does not confuse the user even if the operation unit is inadvertently operated.

The gas stove of the invention according to claim 1 of the present invention is provided corresponding to a plurality of burners arranged on the upper portion of the housing and each of the plurality of burners, and supplies and shuts off gas to the corresponding burners. A gas to the burner in conjunction with at least the supply mechanism according to an operation on a plurality of supply mechanisms for performing the operation, an ignition mechanism for igniting the gas supplied to the burner, and an operation unit provided corresponding to the burner. An operating mechanism that ignites the gas in conjunction with the ignition mechanism and a fire extinguishing operation that shuts off the gas supplied to the burner in conjunction with the supply mechanism, and a light emitting unit that emits light. A notification unit for notifying at least one of the sounding units to be sounded, a control circuit for controlling the operation of each of the plurality of supply mechanisms, the ignition mechanism, and the notification unit, and a control circuit for activating the control circuit. A switch, a first detection switch whose on / off state changes from one state to the other in the process of the ignition operation by the operation mechanism, and a switch for operating the ignition mechanism. In the process of the ignition operation by the mechanism, the second detection switch whose on / off state changes in the process after the first detection switch changes from the one state to the other state, and the operation mechanism. In the process of the ignition operation by the above, when the state of the first detection switch changes to the other state, the operation of the notification unit is controlled before the state of the second detection switch changes, and the control is performed. It is a gas stove provided with a notification control unit that performs a notification operation to notify the start of a circuit, and the notification control unit is triggered by a change of the first detection switch from the one state to the other state. It is characterized in that the timing means for starting the time measurement is provided, and even if the first detection switch is in the other state, the notification operation is not performed until the time measurement means measures the passage of a predetermined time.

In the gas stove of the invention according to claim 2, in addition to the configuration of the invention according to claim 1, the operation unit of the operation mechanism is maintained by a urging force in a state where the supply of gas to the burner is cut off. It is a position, and at a standby position that is a starting point for starting the ignition operation and an end point for ending the fire extinguishing operation while waiting for an operation on the operation unit, and a position moving from the standby position by an operation on the operation unit. There are an ignition position that is the end point at which the ignition operation ends, a combustion position that moves by urging force after moving to the ignition position, and a combustion position where the supply of gas to the burner is maintained, and the operation unit. It is a position that moves from the combustion position by operation, moves in order between the fire extinguishing position that is the starting point for starting the fire extinguishing operation, and after moving to the fire extinguishing position, the fire extinguishing position is moved from the fire extinguishing position to the standby position. The ignition operation is performed in the process of moving the operation unit from the standby position to the ignition position, and the fire extinguishing operation is performed in the process of moving the operation unit from the fire extinguishing position to the standby position. It is characterized by being fired.

The gas stove of the invention according to claim 3 has the configuration of the invention according to claim 1 or 2, and the notification control unit has the second time before the time measuring means finishes measuring the passage of the predetermined time. When the state of the detection switch changes, the notification operation is performed.

According to the gas controller of the invention according to claim 1 , the notification control unit changes the state of the second detection switch when the state of the first detection switch changes to the other state in the process of ignition operation by the operation mechanism. It is premised that the operation of the notification unit is controlled and the notification operation for notifying the activation of the control circuit is performed. However, a predetermined time has passed since the first detection switch changed from one state to the other. The notification operation is not performed until the elapse has passed. Therefore, if the first detection switch returns to one of the states before the predetermined time elapses, the notification control unit does not perform the notification operation. Even if the operation unit is inadvertently operated, the burner will not ignite if the first detection switch returns to one state before the state of the second detection switch changes due to the immediate interruption of the ignition operation. Even though it is in a state, the light emitting part does not emit light or the sounding part does not make a sound, and the user is not confused.

According to the gas stove of the invention according to claim 2, in addition to the effect of the invention according to claim 1, when the operation unit is inadvertently operated, the operation unit is operated from the standby position to the ignition position. It will be unlocked before moving. In this case, the ignition operation is interrupted, and the operation unit returns to the standby position by the urging force. That is, if the operation unit is inadvertently operated, even if the first detection switch changes from one state to the other state, it immediately returns to one state. In particular, when the user does not intend to ignite, even if the operation unit is inadvertently operated, the light emitting unit does not emit light or the sounding unit does not produce a sound, so that the user is not confused.

According to the gas stove of the invention according to claim 3, in addition to the effect of the invention according to claim 1 or 2, the ignition operation is completed when the state of the second detection switch changes. When the user operates the operation unit with the intention of ignition, the user may be confused if the notification operation is not performed even though the ignition operation is completed. According to the gas stove of the invention according to claim 3, when the ignition operation is continued until the process of changing the state of the second detection switch, the notification control unit may perform the notification operation without waiting for the elapse of a predetermined time. can. That is, the notification control unit can immediately perform the notification operation if the ignition operation is completed even before the elapse of the predetermined time, so that the user is not confused.

It is a perspective view of the gas stove 1. It is a perspective view of the fuel supply device 20. It is an exploded perspective view of the panel device 9B. It is a block diagram which shows the electric structure of a gas stove 1. It is a timing chart for explaining the ignition operation and the fire extinguishing operation. It is a flowchart of ignition notification processing.

Hereinafter, embodiments of the present invention will be described. Unless otherwise specified, the structure of the device and the like described below are not intended to be limited thereto, but are merely explanatory examples. The drawings are used to illustrate the technical features that may be employed in the present invention. The following description uses left and right, front and back, and up and down indicated by arrows in the figure.

The gas stove 1 will be described with reference to FIG. The gas stove 1 is a built-in stove. The gas stove 1 includes a housing 2 and a top plate 3. The upper part of the housing 2 is open, and the top plate 3 is installed in the opening portion. In the top plate 3, a right burner 4 is provided in front of the right side, a left burner 5 is provided in front of the left side, and a back burner 6 is provided in the back side of the center. A large number of flame holes are provided on the side surfaces of the right burner 4, the left burner 5, and the back burner 6. In the vicinity of the flame hole of the right burner 4, the ignition electrode of the igniter 4A and the thermocouple 4B (see FIG. 4) are installed so as to face the flame hole. In the vicinity of the flame hole of the left burner 5, the ignition electrode of the igniter 5A and the thermocouple 5B (see FIG. 4) are installed so as to face the flame hole. In the vicinity of the flame hole of the inner burner 6, the ignition electrode of the igniter 6A and the thermocouple 6B (see FIG. 4) are installed so as to face the flame hole. When the igniters 4A, 5A, and 6A are driven, a spark discharge is generated at the ignition electrode and ignites the gas ejected from the flame hole. The thermocouples 4B, 5B, and 6B are heated by the flame formed in the flame hole to generate a thermoelectromotive force. Therefore, the gas stove 1 can detect a misfire in the right burner 4, the left burner 5, and the back burner 6 based on the thermoelectromotive force generated in the thermocouples 4B, 5B, and 6B.

An exhaust port 7 of a grill device (not shown) installed in the housing 2 is provided at the rear portion of the top plate 3. A grill door 8 is provided at substantially the center of the front surface of the gas stove 1. The grill door 8 opens and closes the front opening portion of the grill storage (not shown) provided in the grill device. In the area on the right side of the grill door 8, a right burner 4 and a panel device 9A for displaying the thermal power of the grill device are provided. In the area on the left side of the grill door 8, a panel device 9B for displaying the thermal power of the left burner 5 and the back burner 6 is provided. The panel devices 9A and 9B accommodate the operation panel 114 (see FIG. 4) in the lower portion, and the decorative panel 80 is provided in the upper portion. Two circular openings 86 are formed side by side in each of the decorative panels 80. Two operation knobs 11 and 12 having a front view circular shape are arranged in the two openings 86 of the panel device 9A, respectively. In the two openings 86 of the panel device 9B, two operation knobs 13 and 14 having substantially the same shape as the operation knobs 11 and 12, respectively, are arranged. Each of the operation knobs 11 to 14 is operated to ignite, extinguish, and adjust the heat of the right burner 4, the grill burner in the grill (not shown), the back burner 6, and the left burner 5. The operation knobs 11 to 14 are attached to the front end portions of the fuel supply device 20 (see FIG. 2), which will be described later, respectively.

A plurality of translucent portions 81 are provided on the upper outer peripheral portion of each opening 86. The plurality of translucent portions 81 are provided corresponding to each of the plurality of LEDs 61 (see FIG. 4) provided on the rear side of the decorative panel 80. The translucent unit 81 emits the LED light emitted from the LED 61 forward from the front surface F of the decorative panel 80. The panel devices 9A and 9B transmit the LED light at the positions corresponding to the rotation positions of the operation knobs 11, 13 and 14, and shield the LED light at other positions with the thermal power display member 70 (see FIG. 2) described later. By doing so, the thermal power is displayed. The fuel supply device of the grill device includes a plurality of switches (not shown) that are switched on and off according to the rotation position of the operation knob 12. The thermal power of the grill burner is regulated by a plurality of solenoid valves 119 whose opening / closing state is switched according to the on / off state of the plurality of switches. Therefore, the thermal power display of the grill device is performed by gradually switching the lighting / extinguishing state of the LED 61 provided in the panel device 9A according to the on / off state of the plurality of switches. The plurality of translucent portions 82 provided above the opening 86 of the operation knob 12 and the corresponding LEDs 61 are arranged in a matrix so that the thermal power of the grill burner can be visually understood.

The fuel supply device 20 will be described with reference to FIGS. 2 and 3. The gas stove 1 includes a right burner 4, a left burner 5, a back burner 6, and four fuel supply devices for supplying gas to the grill device. Among them, the fuel supply device 20 for supplying gas to the right burner 4, the left burner 5, and the back burner 6 is a device having the same configuration provided with a known push-push mechanism 24. Further, the fuel supply device (not shown) that supplies gas to the grill device has a push-push mechanism similar to that of the fuel supply device 20, but the gas flow rate is adjusted by the solenoid valve 119 (see FIG. 4). A flow rate control unit (not shown) is provided separately. Hereinafter, the fuel supply device 20 for supplying gas to the left burner 5 will be described as an example, and the description of the fuel supply device for supplying gas to the right burner 4, the back burner 6, and the grill device will be omitted. Since the fuel supply device that supplies gas to the right burner 4 and the fuel supply device that supplies gas to the back burner 6 have the same configuration as the fuel supply device 20, they are designated by the same reference numerals for fuel supply. It is called a device 20.

As shown in FIG. 2, the fuel supply device 20 is a device that ignites and extinguishes the left burner 5 and adjusts the amount of gas supplied to the left burner 5 by pushing and rotating the operation knob 14. The pushing operation is an operation of pushing the front surface of the operation knob 14 backward and pushing it to the back side of the front surface F (front surface of the panel device 9B) of the housing 2 of the gas stove 1. The rotation operation is an operation of gripping the side surface of the operation knob 14 and rotating around an axis (axis center AX) in the front-rear direction. The fuel supply device 20 includes an ignition fire extinguishing unit 21, a gas flow path unit 22, a thermal power adjusting cam 26, a flow rate adjusting unit 31, and the like.

The ignition fire extinguishing unit 21 includes an operation knob 14, a push / push mechanism 24, and a connecting member 25. The connecting member 25 will be described later. The operation knob 14 is formed in a substantially columnar shape. The operation knob 14 moves from the standby position to the combustion position via the ignition position and the operation to move from the combustion position to the standby position via the fire extinguishing position each time the pushing operation of pushing the gas stove 1 toward the rear is performed. Alternately. As shown in FIG. 3A, the standby position is a position where the tip surface of the operation knob 14 is substantially flush with the front surface F of the housing 2. The operation knob 14 is maintained in the standby position by the urging force of the spring. In the standby position, the front end surface of the operation knob 14 may be located slightly behind the front surface F of the housing 2, or may be located slightly in front of the front surface F. In the fuel supply device 20 shown in FIG. 2, the operation knob 14 is located at the standby position.

As shown in FIG. 3B, the ignition position is the position where the tip surface of the operation knob 14 is pushed rearward from the front surface F of the housing 2. The operation knob 14 is located behind the standby position in the ignition position. As shown in FIG. 3C, the combustion position is a position where the tip surface of the operation knob 14 projects with respect to the front surface F of the housing 2. After being pushed into the ignition position, the operation knob 14 moves from the ignition position to the combustion position by the urging force of the spring. The operation knob 14 is located in front of the standby position in the combustion position. When in the combustion position, the operation knob 14 is rotatable (rotatable) about the axis AX along the front-rear direction. As shown in FIG. 3D, the fire extinguishing position is a position where the tip surface of the operation knob 14 is pushed rearward from the front surface F of the housing 2. The operation knob 14 is located in the fire extinguishing position behind the standby position and in front of the ignition position. After being pushed into the fire extinguishing position, the operation knob 14 moves from the fire extinguishing position to the standby position by the urging force of the spring.

As shown in FIG. 2, the push-push mechanism 24 positions the operation knob 14 at each position of the standby position, the ignition position, the combustion position, and the fire extinguishing position, and the main valve (not shown) described later according to each position. The safety valve 48 (see FIG. 6) is opened and closed. Inside the push / push mechanism 24, a slider (not shown) and a valve opening / closing member (not shown) are provided.

The slider is provided with a known cam mechanism (not shown) and is urged forward by a spring (not shown). Each time the operation knob 14 is pushed in, the slider moves the operation knob 14 from the standby position to the combustion position via the ignition position and the operation knob 14 from the combustion position to the standby position via the fire extinguishing position by the cam mechanism. And repeat. The valve opening / closing member is urged forward by a spring (not shown) and operates in conjunction with the slider. The valve opening / closing member opens the main valve and the safety valve 48 in the process of moving the operation knob 14 from the standby position to the ignition position by the pushing operation, and keeps the main valve in the open state. The valve opening / closing member releases the open state of the main valve in the process of moving the operation knob 14 from the fire extinguishing position to the standby position by the pushing operation.

The push-push mechanism 24 includes an igniter switch 15 (see FIG. 2) on the right side surface and a substrate switch 16 (see FIG. 3) on the left side surface. The igniter switch 15 and the board switch 16 are lever switches, and can be turned on or off by the drive piece 41A (see FIG. 2) and the drive piece 41B (see FIG. 3) protruding from the slider to the right and left sides, respectively. Will be done.

The gas flow path portion 22 is connected to the rear side of the push / push mechanism 24. A first gas passage (not shown) is formed inside the gas flow path portion 22. The first gas passage circulates the gas supplied from the gas supply pipe (not shown) connected to the introduction port 23 opened at the bottom to the flow rate adjusting unit 31. A main valve and a safety valve 48 are provided in the first gas passage. As described above, the main valve opens the first gas passage by pressing the valve opening / closing member and maintains the open state. The main valve is elastically urged to a closed state by closing the first gas passage by a spring (not shown). Therefore, when the pressure of the valve opening / closing member is released, the main valve is urged by the spring to close the first gas passage and keep it in the closed state.

The safety valve 48 is an electromagnetically operated valve that is elastically urged to a closed state in which the first gas passage is closed by a spring (not shown). When the safety valve 48 is pressed together with the main valve by the valve opening / closing member, the safety valve 48 opens the first gas passage. When the safety valve 48 is opened, it is driven by the CPU 101 (see FIG. 4) mounted on the control circuit 100 of the gas stove 1 and is maintained in the open state. When the left burner 5 is extinguished by closing the main valve, the CPU 101 stops driving the safety valve 48 and releases the open state. In this case, the safety valve 48 closes the first gas passage by a spring.

The flow rate adjusting unit 31 is provided above the push / push mechanism 24 and the gas flow path unit 22. A second gas passage (not shown) is formed inside the flow rate adjusting unit 31. The second gas passage circulates the gas supplied from the gas flow path portion 22 and supplies the gas to the left burner 5 via a gas supply pipe (not shown) connected to the outlet 32 opened at the upper part. A hole 30 communicating with the second gas passage is formed at the front end portion of the flow rate adjusting portion 31, and the needle valve 28 is inserted into the hole portion 30. The needle valve 28 is arranged so that the front end side is exposed to the outside from the hole 30 and the rear end side is movable in the front-rear direction in the second gas passage. A pin 29 extending in the vertical direction is provided at the front end of the needle valve 28. The lower end of the pin 29 engages with the cam groove 27 (described later) of the thermal power adjusting cam 26.

The thermal power adjusting cam 26 is formed in a substantially semi-cylindrical shape, and is rotatably provided around the axis AX so as to cover the upper part on the front end side of the push / push mechanism 24. The thermal power adjustment cam 26 is restricted from moving in the front-rear direction. A cam groove 27 is provided on the outer peripheral portion of the thermal power adjusting cam 26. The cam groove 27 is formed in a spiral shape centered on the axis AX. The lower end of the pin 29 provided in the needle valve 28 engages with the cam groove 27. When the thermal power adjusting cam 26 rotates, the cam groove 27 guides the pin 29 and moves the needle valve 28 in the front-rear direction.

The thermal power adjusting cam 26 includes a stretched portion (not shown) extending forward, and has a tooth portion (not shown) protruding inward at the front end portion of the stretched portion. The tooth portion meshes with the tooth portion 38 of the connecting member 25 when the operation knob 14 is in the combustion position (see FIG. 3C). The connecting member 25 extends forward from the slider of the push / push mechanism 24 and engages with a shaft body (not shown) centered on the axis AX. The connecting member 25 is held at the front end portion of the shaft body, and is provided so as to be movable in the front-rear direction together with the slider while being rotatable around the shaft body around the axis center AX. The operation knob 14 is held at the tip of the connecting member 25, is movable in the front-rear direction together with the connecting member 25, and is rotatably provided about the axis AX. The tooth portion 38 of the connecting member 25 is provided on the outer peripheral surface of the rear end portion. When the operating knob 14 is in the combustion position, the tooth portion 38 of the connecting member 25 meshes with the tooth portion of the thermal power adjusting cam 26, and connects the operating knob 14 and the thermal power adjusting cam 26. When the operation knob 14 is not in the combustion position, the tooth portion of the thermal power adjustment cam 26 is located in front of the tooth portion 38 of the connecting member 25 and does not mesh, and the connection state of the operation knob 14 and the thermal power adjustment cam 26 is released. do.

A substantially semi-cylindrical LED operating member 36 is fixed to the outer peripheral surface of the extended portion of the thermal power adjusting cam 26. The LED operating member 36 has an engaging piece 37 extending forward. The engaging piece 37 engages with the thermal power display member 70. The thermal power adjusting cam 26 rotates the thermal power display member 70 around the axis AX via the LED operating member 36.

The thermal power display member 70 includes a main body portion 71 and a flange portion 76. The main body 71 has a cylindrical shape extending in the front-rear direction. The inner diameter of the main body 71 is larger than the outer diameter of the operation knob 14. The main body 71 has two hooks 75 and one engaging portion 74 at three locations in the circumferential direction. The two hooks 75 are hooked to a through hole (not shown) in which the main body 71 is arranged in the panel device 9B of the housing 2, and the thermal power display member 70 is placed on the rear side of the decorative panel 80 with the axis AX at the center. Hold it rotatably. The engaging portion 74 engages with the engaging piece 37 of the LED operating member 36. The flange portion 76 is formed in a flange shape that projects outward in the radial direction at the front end portion of the main body portion 71 and goes around in the circumferential direction. The flange portion 76 is arranged between the LED 61 and the translucent portion 81 of the decorative panel 80 in the panel device 9B. The flange portion 76 has a notch-shaped light passing portion 77. The thermal power display member 70 passes the LED light at the position corresponding to the light passing portion 77, and shields the other LED light by the flange portion 76. The gas stove 1 rotates the thermal power display member 70 together with the operation knob 14, and displays the thermal power by emitting LED light at a position corresponding to the flow rate of the gas from the translucent portion 81 via the light passing portion 77.

Next, the electrical configuration of the gas stove 1 will be described. The gas stove 1 includes a control circuit 100. The control circuit 100 includes an I / O interface (not shown) in addition to the CPU 101, ROM 102, RAM 103, and timer 104. The CPU 101 comprehensively controls various operations of the gas stove 1. The ROM 102 stores various programs of the gas stove 1 including an ignition notification process (see FIG. 6). The RAM 103 temporarily stores various types of information. The timer 104 is operated by a program and measures the standby time in the ignition notification process described later.

The control circuit 100 includes a power supply circuit 120, a switch input circuit 111, a thermocouple input circuit 112, an operation panel 114, an LED driver circuit 115, a safety valve circuit 116, a solenoid valve circuit 117, an igniter circuit 118, an audio output circuit 122, and the like. Be connected. The power supply circuit 120 steps down the alternating current (for example, 100V) supplied from the power supply 125 to a direct current (for example, 5V), rectifies it, and supplies electric power to various circuits. In the figure, the power supply is represented as "AC". The switch input circuit 111 detects the on / off state of the igniter switch 15 of the fuel supply device 20 and the board switch 16 and inputs them to the power supply circuit 120 and the control circuit 100. The control circuit 100 operates when the board switch 16 of any of the fuel supply devices 20 is turned on, and stops operating when the board switches 16 of all the fuel supply devices 20 are turned off. The thermocouple input circuit 112 inputs the detected values (signals corresponding to the thermoelectromotive force) from the thermocouples 4B, 5B, and 6B to the control circuit 100. The operation panel 114 is used for setting a timer by the user, inputting a selection of thermal power control according to the cooking content, and turning on / off the LED according to the control content of the CPU 101.

The LED driver circuit 115 controls lighting and extinguishing of a plurality of LEDs 61 mounted on the display boards 60 of the panel devices 9A and 9B. The safety valve circuit 116 opens and closes the safety valve 48 of the fuel supply device 20 based on the control of the CPU 101. The solenoid valve circuit 117 opens and closes a plurality of solenoid valves 119 provided in the flow rate adjusting unit (not shown) of the grill device based on the control of the CPU 101. The igniter circuit 118 drives the igniters 4A, 5A, and 6A, respectively, based on the control signal output by the CPU 101 according to the state of the igniter switch 15. The audio output circuit 122 controls the output of audio from the speaker 121 provided in the housing 2. In the ignition notification process described later, the start-up sound "pip" is sounded from the speaker 121 at the time of ignition, and the fire extinguishing sound "pip-pip-pip" is sounded from the speaker 121 at the time of extinguishing the fire. Further, in another process executed by the CPU 101, for example, a voice operation guide or the like is sounded from the speaker 121.

Next, based on the timing chart shown in FIG. 5, the ignition operation and the fire extinguishing operation based on the pushing operation of the operation knob 14 will be described. At T0, the operation knob 14 is in the standby position. The board switch 16 and the igniter switch 15 are in the off state, and the left burner 5 is in the fire extinguishing state. At T1, in order to ignite the left burner 5, the user starts a pushing operation with respect to the operation knob 14. Along with the pushing operation, the slider of the push / push mechanism 24 and the valve opening / closing member start moving backward, and the ignition operation is started. The gas stove 1 supplies gas to the left burner 5 in the process of moving the operation knob 14 from the standby position to the ignition position, and performs an ignition operation to ignite the gas. That is, the standby position is the starting point for starting the ignition operation, and the ignition position is the ending point for ending the ignition operation. The safety valve 48 and the main valve are opened by a valve opening / closing member.

At T2, the drive piece 41B of the valve opening / closing member comes into contact with the board switch 16 to turn on the board switch 16. Electric power is supplied to the control circuit 100 to drive the CPU 101. The CPU 101 transmits a control signal to the safety valve circuit 116 to maintain the safety valve 48 in the open state. The CPU 101 drives the operation panel 114, turns on the backlight, and displays a display for selecting a cooking content. The operation panel 114 is driven after the standby time has elapsed by executing the ignition notification process (see FIG. 6) described later. The CPU 101 transmits a control signal to the LED driver circuit 115 to cause the LED 61 to emit light (light). The LED 61 is turned on after the standby time has elapsed due to the execution of the ignition notification process. The CPU 101 transmits a control signal to the voice output circuit 122, and causes the speaker 121 to produce a start-up sound. The speaker 121 sounds after the standby time has elapsed by executing the ignition notification process.

At T3, the drive piece 41A of the valve opening / closing member comes into contact with the igniter switch 15 to turn on the igniter switch 15. The CPU 101 transmits a control signal to the igniter circuit 118 to drive the igniter 5A. The CPU 101 drives the igniter 5A for a predetermined time when the igniter switch 15 is turned on. After a lapse of a predetermined time, if the left burner 5 is not ignited based on the detected value of the thermocouple 5B input from the thermocouple input circuit 112, the transmission of the control signal to the safety valve circuit 116 is stopped and the safety valve 48 is closed. Will be done.

At T4, the operation knob 14 reaches the ignition position, and the ignition operation ends. When the user releases the operation knob 14 at T5, the operation knob 14 starts to move from the ignition position to the combustion position by the urging force of the spring of the slider. The valve opening / closing member also starts to move forward due to the urging force of the spring and the spring of the main valve. The igniter switch 15 is turned off at T6, but the igniter 5A is driven from the time it is turned on until a predetermined time elapses.

At T7, the valve opening / closing member reaches the valve opening maintenance position, and the forward movement is stopped. The valve opening / closing member keeps the main valve in the open state and keeps the board switch 16 in the on state at the valve opening maintenance position. The slider continues to move forward even after T7, and stops moving when it reaches the combustion position at T8. Immediately before reaching the combustion position, the tooth portion 38 of the connecting member 25 and the tooth portion of the thermal power adjusting cam 26 mesh with each other, so that the operation knob 14 is connected to the thermal power adjusting cam 26.

When the operation knob 14 is rotated while the operation knob 14 is in the combustion position, the thermal power adjusting cam 26 rotates around the axis AX together with the operation knob 14. When the thermal power adjusting cam 26 rotates, the pin 29 of the needle valve 28 is guided by the cam groove 27 and moves in the front-rear direction. As a result, the needle valve 28 moves in the front-rear direction, so that the flow rate of the gas flowing through the second gas passage is adjusted according to the position of the needle valve 28, and the thermal power of the left burner 5 is changed. Further, the thermal power display member 70 is also rotated by the rotation operation of the operation knob 14, and the LED light at the position corresponding to the thermal power passes through the light passing portion 77 of the flange portion 76 and is transmitted from the translucent portion 81 of the decorative panel 80. It is emitted and the firepower is displayed.

At T9, in order to extinguish the fire on the left burner 5, the user starts a pushing operation on the operation knob 14. Along with the pushing operation, the slider of the push / push mechanism 24 starts moving backward. The meshing state of the tooth portion 38 of the connecting member 25 and the tooth portion of the thermal power adjusting cam 26 is released, and the operation knob 14 releases the connection with the thermal power adjusting cam 26.

At T10, the slider abuts on the valve opening / closing member and presses the valve opening / closing member backward. The slider and the valve opening / closing member are moved backward by the pushing operation. At T11, the operation knob 14 reaches the fire extinguishing position. Then, at T12, when the user releases the operation knob 14, the operation knob 14 moves from the ignition position to the standby position by the urging force of the slider spring, the valve opening / closing member spring, and the main valve spring. start. Further, the valve opening / closing member also starts to move forward by the urging force of the spring and the spring of the main valve, and the fire extinguishing operation is started. The gas stove 1 performs a fire extinguishing operation that shuts off the gas supplied to the left burner 5 in the process of moving the operation knob 14 from the fire extinguishing position to the standby position. That is, the fire extinguishing position is the starting point for starting the fire extinguishing operation, and the standby position is the ending point for ending the fire extinguishing operation.

At T13, the board switch 16 is turned off. The CPU 101 stops transmitting the control signal to the safety valve circuit 116, and releases the electromagnetic operation of the safety valve 48. Since the safety valve 48 is closed by the urging force of the spring, the left burner 5 in which the gas supply is cut off is extinguished. At T14, the operation knob 14 reaches the standby position, and the fire extinguishing operation ends. Since the valve opening / closing member is also located at the front end of the moving range together with the slider, the main valve is closed.

By the way, when the board switch 16 is turned on by the pressing operation with respect to the operation knob 14, the operation panel 114 is displayed, the LED 61 is turned on, and the start-up sound is emitted from the speaker 121. When the pushing operation is based on a careless operation not intended by the user, the LED 61 is turned on, the speaker 121 is sounded, and the like occurs even if the left burner 5 is not ignited. Therefore, in the gas stove 1, a predetermined standby time elapses from the time when the board switch 16 turns on the display of the operation panel 114, the lighting of the LED 61, and the sound of the speaker 121 by the CPU 101 of the control circuit 100 performing the ignition notification process. Wait until you do. If the board switch 16 is turned off during standby, the operation panel 114 is not displayed, the LED 61 is lit, and the speaker 121 is not sounded.

Hereinafter, the ignition notification process will be described with reference to FIG. When the user pushes the operation knob 14 in the standby position and ignites the left burner 5, the board switch 16 is turned on, power is supplied to the control circuit 100, and the CPU 101 is driven. do. The CPU 101 starts executing the ignition notification process in parallel with other control processes when the board switch 16 is turned on. The CPU 101 drives the timer 104 and starts timing the standby time (S1). The standby time is, for example, 500 ms, and even if a pushing operation based on a careless operation is performed, a sufficient time is set for the pushing operation to be released.

The CPU 101 determines the on / off state of the board switch 16, the on / off state of the igniter switch 15, and whether or not the standby time has elapsed during the timekeeping of the standby time. If the board switch 16 is on (S2: NO), the igniter switch 15 is off (S3: NO), and the standby time has not elapsed (S5: NO), the CPU 101 returns the process to S2 to make a judgment. repeat.

When the board switch 16 is turned off during standby (S2: YES), the CPU 101 ends the ignition notification process. The power supply to the control circuit 100 is cut off. The gas stove 1 does not display the operation panel 114, turn on the LED 61, or make a sound on the speaker 121.

When the igniter switch 15 is turned on during standby (S3: YES), it is considered that the pushing operation for the operation knob 14 is not due to an inadvertent operation but is intended to ignite the left burner 5. be able to. Therefore, the CPU 101 advances the process to S6. When the standby time has elapsed while the board switch 16 is on and the igniter switch 15 is off (S5: YES), the push operation for the operation knob 14 is immediately pushed by simply touching the operation knob 14. Is not something that is resolved, but is intended to ignite the left burner 5, and can be regarded as being in the process of being pushed in. Therefore, the CPU 101 advances the process to S6.

The CPU 101 displays the operation panel 114 and lights the LED 61 (S6). Further, the CPU 101 causes the speaker 121 to generate a start-up sound (S7). The CPU 101 determines the on / off state of the board switch 16 and the on / off state of the igniter switch 15. If the board switch 16 is on (S8: NO) and the igniter switch 15 is off (S10: NO), the CPU 101 returns the process to S8 and repeats the determination.

When the board switch 16 is turned off (S8: YES), the left burner 5 is not ignited, but the operation panel 114 displays and the LED 61 is lit. Therefore, the CPU 101 shifts the process to S15 to hide the operation panel 114, and when the LED is turned off (S15), the ignition notification process ends. The power supply to the control circuit 100 is cut off.

Further, when the igniter switch 15 is turned on (S10: YES), the CPU 101 operates the igniter 5A (S11). Since the safety valve 48 and the main valve are opened before the igniter switch 15 is turned on in the ignition operation, gas is supplied to the left burner 5. The igniter circuit 118 drives the igniter 5A for a predetermined time and ignites the left burner 5.

After the left burner 5 is ignited, the CPU 101 waits until the board switch 16 is turned off (S12: NO). When the fire extinguishing operation is performed and the board switch 16 is turned off (S12: YES), the CPU 101 makes a fire extinguishing sound sound from the speaker 121 (S13). When the operation panel 114 is hidden and the LED is turned off (S15), the CPU 101 ends the ignition notification process. The power supply to the control circuit 100 is cut off. The ignition notification process described above is a process for the ignition operation and the fire extinguishing operation of the left burner 5, but the same ignition notification process is performed in the process for the ignition operation and the fire extinguishing operation of the right burner 4, the back burner 6, and the stove burner. Will be executed.

As described above, the CPU 101 of the control circuit 100 performs a notification operation for notifying the operating state of the gas stove 1 by at least one of the display of the operation panel 114, the lighting of the LED 61, and the sound of the speaker 121. The notification operation is performed when the state of the board switch 16 is an on state. The state of the board switch 16 changes from an off state to an on state in the process of ignition operation by the operation mechanism. If the operation knob 14 is inadvertently operated, for example, by the user touching the operation knob 14 without the intention of ignition, the ignition operation is started, so that the state of the board switch 16 may change. The CPU 101 does not perform the notification operation until a predetermined standby time elapses after the board switch 16 changes from the off state to the on state. Therefore, if the board switch 16 returns to the off state before the standby time elapses, the CPU 101 does not perform the notification operation. Even if the operation knob 14 is inadvertently operated, if the board switch 16 is returned to the off state by immediately interrupting the ignition operation, the operation panel 114 will be in a state where the left burner 5 is not ignited. The user will not be confused because the display, the LED 61 are not turned on, and the start-up sound is not emitted from the speaker 121.

If the operation knob 14 is inadvertently operated, the operation on the operation knob 14 is released before the operation knob 14 moves from the standby position to the ignition position. In this case, the ignition operation is interrupted, and the operation knob 14 returns to the standby position due to the urging force of the spring. That is, if the operation knob 14 is inadvertently operated, even if the board switch 16 changes from the off state to the on state, it immediately returns to the off state. In particular, when the user does not intend to ignite, the operation panel 114 is displayed, the LED 61 is lit, and the start-up sound is emitted from the speaker 121 even if the operation knob 14 is inadvertently operated. Since there is no speaker, the user will not be confused.

The ignition operation is completed when the state of the igniter switch 15 changes. When the user operates the operation knob 14 with the intention of ignition, the user may be confused if the notification operation is not performed even though the ignition operation is completed. In the present embodiment, when the ignition operation continues until the state of the igniter switch 15 changes, the CPU 101 can perform the notification operation without waiting for the elapse of the standby time. That is, even before the elapse of the standby time, the CPU 101 can immediately perform the notification operation if the ignition operation is completed, so that the user is not confused.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, the start sound and the end sound may not be pronounced. The standby may be at least one of the display of the operation panel 114, the lighting of the LED 61, and the sound of the speaker 121 in the ignition notification process. The CPU 101 executes the ignition notification process when the board switch 16 changes from the off state to the on state, but may execute the ignition notification process when the igniter switch 15 changes from the off state to the on state. , A switch that triggers the execution of the ignition notification process may be separately provided. Further, the CPU 101 may execute the ignition notification process when the board switch 16 changes from the on state to the off state. In this case, the board switch 16 may be in the ON state when the CPU 101 is not driven and may be in the OFF state when the CPU 101 is driven.

The standby time is not limited to 500 ms and may be changed as appropriate. The fuel supply device 20 performs ignition / extinguishing operations and thermal power adjustment operations, but may be performed by separate devices. The operation knobs 11, 13, and 14 adjust the heating power of the right burner 4, the back burner 6, and the left burner 5 by rotating the operation knobs, but a heating power adjusting lever may be provided and the heating power may be adjusted by operating the lever. In this case, instead of the operation knob, an ignition fire extinguishing button for performing an ignition operation and a fire extinguishing operation may be provided. Even if the thermal power adjustment lever and the ignition fire extinguishing button are provided separately, the user may inadvertently touch the ignition fire extinguishing button. Even in this case, the user will not be confused by displaying the operation panel 114, lighting the LED 61, and sounding the speaker 121 after waiting for the elapse of the standby time as in the present embodiment.

Further, instead of the ignition fire extinguishing button, a rotating ignition fire extinguishing switch may be provided, and the ignition operation and the fire extinguishing operation may be performed according to the rotation position of the ignition fire extinguishing switch. In this case, the ignition / fire extinguishing switch does not have to be configured to return to the standby position by the urging of a spring or the like, and the user can manually rotate the ignition / fire extinguishing switch to the standby position to interrupt the ignition operation. good.

In the above description, the right burner 4, the left burner 5, and the back burner 6 are examples of the "burner" of the present invention. The gas flow path portion 22 is an example of the “supply mechanism” of the present invention. The igniters 4A, 5A, 6A are examples of the "ignition mechanism" of the present invention. The operation knobs 11 to 14 are examples of the "operation unit" of the present invention. The ignition fire extinguishing unit 21 is an example of the "operation mechanism" of the present invention. The board switch 16 is an example of the "first detection switch" of the present invention. The operation panel 114 and the LED 61 are examples of the "light emitting unit" of the present invention. The speaker 121 is an example of the "sounding unit" of the present invention. The CPU 101 is an example of the "control unit" of the present invention. The CPU 101 that makes the determination of S5 is an example of the "timekeeping means" of the present invention. The igniter switch 15 is an example of the "second detection switch" of the present invention.

1 Gas stove 2 Housing 4 Right burner 5 Left burner 6 Back burner 4A, 5A, 6A Igniter 11-14 Operation knob 15 Igniter switch 16 Board switch 20 Fuel supply device 21 Ignition fire extinguishing part 22 Gas flow path part 61 LED
101 CPU
114 Operation panel 121 Speaker

Claims (3)

With multiple burners located at the top of the housing,
A plurality of supply mechanisms provided corresponding to each of the plurality of burners to supply and shut off gas to the corresponding burners.
An ignition mechanism that ignites the gas supplied to the burner,
In response to an operation on the operation unit provided corresponding to the burner, at least an ignition operation in which gas is supplied to the burner in conjunction with the supply mechanism and the gas is ignited in conjunction with the ignition mechanism, and the supply. An operation mechanism that works in conjunction with the mechanism to extinguish the fire that shuts off the gas supplied to the burner.
A notification unit that notifies at least one of the light emitting unit and the sounding unit that emits light, and
A control circuit that controls the operation of each of the plurality of supply mechanisms, the ignition mechanism, and the notification unit.
A first detection switch that is a switch for activating the control circuit and whose on / off state changes from one state to the other in the process of the ignition operation by the operation mechanism.
It is a switch for operating the ignition mechanism, and is turned on / off in the process of the ignition operation by the operation mechanism after the first detection switch changes from the one state to the other state. The second detection switch that changes the state of
When the state of the first detection switch changes to the other state in the process of the ignition operation by the operation mechanism, the operation of the notification unit is controlled before the state of the second detection switch changes. , With a notification control unit that performs a notification operation to notify the activation of the control circuit
It is a gas stove equipped with
The notification control unit is
A timing means for starting timing when the first detection switch changes from the one state to the other state is provided.
The gas stove is characterized in that even if the first detection switch is in the other state, the notification operation is not performed until the time measuring means measures the passage of a predetermined time. The operation unit of the operation mechanism is
It is a position maintained by the urging force in a state where the supply of gas to the burner is cut off, and is a starting point for starting the ignition operation and an end point for ending the fire extinguishing operation while waiting for an operation on the operation unit. Standby position and
An ignition position that is a position that moves from the standby position by an operation on the operation unit and is an end point at which the ignition operation ends.
A combustion position that is a position that is moved by urging force after moving to the ignition position and that maintains the supply of gas to the burner.
A fire extinguishing position that is a position that moves from the combustion position by an operation on the operation unit and is a starting point for starting the fire extinguishing operation.
It moves in order between the fire extinguishing positions, and after moving to the fire extinguishing position, it moves from the fire extinguishing position to the standby position by an urging force.
The ignition operation is performed in the process of moving the operation unit from the standby position to the ignition position.
The gas stove according to claim 1, wherein the fire extinguishing operation is performed in a process of moving the operation unit from the fire extinguishing position to the standby position. The present invention is characterized in that the notification control unit performs the notification operation when the state of the second detection switch changes before the timing means finishes measuring the passage of the predetermined time. The gas stove according to 1 or 2.

Images