JP2019039594A - Gas cooking stove - Google Patents

Abstract

To provide a gas cooking stove capable of holding a firepower display in ignition processing of a burner.SOLUTION: A substrate switch turns ON by pressing-in operation on an operation knob for ignition. A CPU of a control circuit starts clocking an extinction time (S1). A firepower display member which makes a firepower display by cutting off part of LED light and passing LED light corresponding to firepower through operates mechanically interlocking with a firepower adjustment cam interlocking with the operation knob. If the operation knob rotates in the pressing-in operation or the firepower cam rotates with a middle-flame guide, the firepower display member possibly operates during igniting operation. The extinction time is longer than a time needed for the pressing-in operation, and the CPU does not turn ON the LED until the extinction time passes. Throughout the igniting operation, the LED does not illuminate and no firepower display is made, so even if the firepower display member operates, a display state of firepower is not caused to change.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a gas stove.

  The gas stove includes a fuel supply device that supplies gas to the burner. For example, the combustion amount adjusting body (operation knob) described in Patent Document 1 has a push-push mechanism that can be rotated, and protrudes or is accommodated from the front surface of the stove body each time a pushing operation is performed. The When a pushing operation is performed when the operation knob is accommodated, the controller performs an ignition process on the burner. The controller detects the rotation operation amount of the operation knob by the position sensor, and adjusts the gas amount supplied to the burner by driving the motor according to the detection amount. Moreover, after the ignition process to the burner, the controller performs light emission control of the LED according to the detection amount of the position sensor, and displays the thermal power.

JP 2015-36593 A

  In order to reduce the cost, devices such as position sensors and parts are omitted, and if it is considered that the ignition process of the burner and adjustment of the gas supply amount are performed with a mechanical configuration such as a cam, the amount of rotation of the operation knob Is not understood. Therefore, the inventors studied to display the thermal power by shielding the LED light with a shielding member interlocked with the turning operation of the operation knob. On the other hand, in order to stabilize the combustion state at the time of ignition, it is desired to incorporate a function for mechanically adjusting the gas supply amount so that the gas supply amount becomes a predetermined amount in conjunction with the pushing operation. However, if the gas supply amount is mechanically adjusted in conjunction with the push-in operation, the operation knob rotates in conjunction with it, and the shielding member also operates accordingly. Therefore, the burner combustion state and thermal power display at the time of ignition There was a possibility that the user would be confused because the states did not match.

  The objective of this invention is providing the gas stove which can wait for the thermal power display during the ignition process of a burner.

  The gas stove according to claim 1 of the present invention adjusts the supply amount of gas when supplying gas to the burner, and a supply mechanism for supplying and shutting off gas to the burner arranged at the upper part of the housing. The adjustment mechanism, the ignition mechanism for igniting the gas supplied to the burner, and the operation to the operation unit provided corresponding to the burner, while supplying gas to the burner in conjunction with the supply mechanism, An ignition operation for igniting a gas in conjunction with an ignition mechanism, an adjustment operation for adjusting a gas supply amount to the burner in conjunction with the adjustment mechanism, and a gas to be supplied to the burner in conjunction with the supply mechanism An operation mechanism that performs a fire extinguishing operation that shuts off, a detection switch that changes an on / off state from one state to the other state in the course of the ignition operation by the operation mechanism, and the detection switch includes the one The control unit that shifts the light emitting unit from the extinguished state to the light emitting state in response to the change from the other state to the other state, and the light emitting portion of the light emitting unit, A gas stove comprising: an ignition state indicating the presence or absence of ignition of the gas, and a display device for displaying a thermal power state indicating the amount of gas supplied to the burner, wherein the display device is mechanically coupled to the adjustment mechanism. The mode change unit that interlocks and changes the mode of light emission of the light emitting unit is provided, and the control unit has a predetermined time after the detection switch changes from the one state to the other state. The light emitting unit is shifted to the light emitting state after the light is kept off.

  The gas stove of the invention according to claim 2 is supplied to the burner by mechanical interlocking with the adjustment mechanism in the process of the ignition operation by the operation mechanism in addition to the configuration of the invention of claim 1. An adjustment member for adjusting a gas supply amount to an ignition amount that is an amount necessary for ignition of the burner is provided.

  According to the gas stove of the first aspect of the invention, when the burner is ignited, the supply mechanism supplies gas to the burner, and the ignition mechanism ignites the gas in conjunction with the ignition operation by the operation mechanism. Since the adjustment mechanism operates in conjunction with the operation of the operation unit of the operation mechanism together with the supply mechanism and the ignition mechanism, the adjustment mechanism may be operated by the operation of the operation unit in the ignition operation. The display device displays an ignition state and a thermal power state of the burner by means of a mode change unit that is mechanically interlocked with the adjustment mechanism. Since the mode change unit also operates when the adjustment mechanism operates, the mode change unit changes the display of the ignition state and the thermal power state of the burner. By the way, when the user operates the part related to ignition in the operation unit for the ignition operation, if the user touches the part related to the adjustment of the thermal power in the operation unit due to an erroneous operation or the like, and the adjustment operation is performed unintentionally, Since the display state of the display device changes, the user may be confused. Therefore, the control unit maintains the light emitting unit in the extinguished state for a predetermined time after the state change by the detection switch. If the light emitting unit is turned off, the display of the burner ignition state and thermal power state by the display device is not performed. The predetermined time is desirably a time required from the state change by the detection switch to the completion of the burner ignition process. Even if the mode change unit operates during that time, the display device does not display the ignition state and the thermal power state, so that the user is not confused.

  According to the gas stove of the invention of claim 2, in addition to the effect of the invention of claim 1, when the burner is ignited in the ignition operation by the operation mechanism, the adjustment member is mechanically interlocked with the adjustment mechanism, Adjust the gas supply amount to the ignition amount. Therefore, the aspect change part mechanically interlocked with the adjusting mechanism may cause a change in the display of the burner ignition state and the thermal power state during the ignition operation. The control unit maintains the light emitting unit in a light-off state for a predetermined time after the state change by the detection switch. Thereby, the display of the ignition state and the thermal power state of the burner by the display device is not performed for a predetermined time from the state change by the detection switch. Even if the mode change unit operates during that time, the display device does not display the ignition state and the thermal power state, so that the user is not confused.

1 is a perspective view of a gas stove 1. 2 is a perspective view of a fuel supply device 20. FIG. 2 is a cross-sectional view of a fuel supply device 20. FIG. It is a disassembled perspective view of the panel apparatus 9B. FIG. 5 is a diagram for explaining the operation of a push / push mechanism 24. 2 is a block diagram showing an electrical configuration of the gas stove 1. FIG. 3 is a timing chart for explaining ignition and extinguishing and adjustment of thermal power by the fuel supply device 20; It is a flowchart of a thermal power display process.

  Embodiments of the present invention will be described below. The structure of the apparatus described below is merely an illustrative example, and is not intended to be limited to that unless otherwise specified. The drawings are used to explain technical features that can be adopted by the present invention. In the following description, left, right, front, back, and top and bottom indicated by arrows in the figure are used.

  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 housing 2 is open at the top, and the top plate 3 is installed at the opening. In the top 3, a right burner 4 is provided on the right front side, a left burner 5 is provided on the left front side, and a back burner 6 is provided on the center rear side. A 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, an ignition electrode of the igniter 4A and a thermocouple 4B (see FIG. 6) are installed so as to face the flame hole. In the vicinity of the flame hole of the left burner 5, an ignition electrode of the igniter 5A and a thermocouple 5B (see FIG. 6) are installed so as to face the flame hole. An ignition electrode of the igniter 6A and a thermocouple 6B (see FIG. 6) are installed near the flame hole of the back burner 6 so as to face the flame hole. When driven, the igniters 4A, 5A, 6A generate a spark discharge at the ignition electrode, and ignite the gas ejected from the flame hole. The thermocouples 4B, 5B, and 6B are heated by a flame formed in the flame holes to generate a thermoelectromotive force. Therefore, the gas stove 1 can detect 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 in the approximate center of the front surface of the gas stove 1. The grill door 8 opens and closes a front opening portion of a grill cabinet (not shown) provided in the grill device. In the area on the right side of the grill door 8, two operation knobs 11 and 12 having a circular shape in front view are provided side by side in the horizontal direction. In the left region of the grill door 8, two operation knobs 13 and 14 having the same shape are provided side by side in the same height position as the operation knobs 11 and 12. The operation knobs 11 to 14 are operated to ignite, extinguish, and adjust the thermal power of the right burner 4, the grill burner (not shown) in the grill cabinet, the back burner 6, and the left burner 5, respectively. The operation knobs 11 to 14 are respectively attached to the front end portion of the fuel supply device 20 (see FIG. 2).

  The fuel supply device 20 will be described with reference to FIGS. The gas stove 1 includes a right burner 4, a left burner 5, a back burner 6, and four fuel supply devices that supply gas to the grill device. Among them, the fuel supply device 20 that supplies gas to the right burner 4, the left burner 5, and the back burner 6 is a device having the same configuration including a known push-push mechanism 24. A fuel supply device (not shown) for supplying gas to the grill device includes a push-push mechanism similar to that of the fuel supply device 20, but the gas flow rate is adjusted by an electromagnetic valve 119 (see FIG. 6). A flow rate controller (not shown) is provided separately. Hereinafter, the fuel supply device 20 that supplies gas to the left burner 5 will be described as an example, and description of the fuel supply device that supplies gas to the right burner 4, the back burner 6, and the grill device will be omitted. Note that 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, and therefore, for convenience, the same reference numerals are attached for the sake of convenience. Called device 20.

  As shown in FIGS. 2 and 3, the fuel supply device 20 is a device for igniting and extinguishing the left burner 5 and adjusting the amount of gas supplied to the left burner 5 by pushing and rotating the operation knob 14. It is. The pushing operation is an operation of pushing the front surface of the operation knob 14 rearward and pushing the operation knob 14 inward from the front surface F of the casing 2 of the gas stove 1 (front surface of the panel device 9B). The rotation operation is an operation of gripping the side surface of the operation knob 14 and rotating around the axis in the front-rear direction (axial center AX). The fuel supply device 20 includes an operation knob 14, a push / push mechanism 24, a gas flow path portion 22, a heating power adjustment cam 26, a flow rate adjustment portion 31, a connecting member 25, a medium fire guide 90, and the like.

  The operation knob 14 is formed in a substantially cylindrical shape. The operation knob 14 moves from the standby position to the operation position through the first push position every time a push operation is performed to push the gas stove 1 backward, and from the operation position to the standby position through the second push position. Alternately move and move. As shown in FIG. 4A, the standby position is a position where the front end surface of the operation knob 14 is substantially flush with the front surface F of the housing 2. In the standby position, the front end surface of the operation knob 14 may be positioned slightly rearward from the front surface F of the housing 2 or may be positioned slightly forward. 2 and 3, the operation knob 14 is located at the standby position.

  As shown in FIG. 4B, the first pushing position is a position where the front end surface of the operation knob 14 is pushed backward from the front surface F of the housing 2. The operation knob 14 is located behind the standby position at the first pushing position. As shown in FIG. 4C, the operation position is a position where the tip surface of the operation knob 14 protrudes from the front surface F of the housing 2. The operation knob 14 is positioned in front of the standby position at the operation position. When in the operation position, the operation knob 14 is rotatable (rotatable) about the axis AX along the front-rear direction. As shown in FIG. 4D, the second pushing position is a position where the front end surface of the operation knob 14 is pushed backward from the front surface F of the housing 2. The operation knob 14 is located behind the standby position and ahead of the first push position at the second push position.

  As shown in FIG. 3, the push / push mechanism 24 positions the operation knob 14 at each of a standby position, a first pushing position, an operation position, and a second pushing position, and a main valve 39 described later according to each position. Is kept open or closed. Inside the push-push mechanism 24, a front slider 40 and a rear slider 41 that move in the front-rear direction in accordance with the pressing operation of the operation knob 14, and a spring that biases the front slider 40 and the rear slider 41 forward respectively. 42 and a spring 43 are provided. The front slider 40 and the rear slider 41 are provided with cam mechanisms 44 and 45, respectively. Since the cam mechanisms 44 and 45 are both well known, detailed description of the operation is omitted.

  The front slider 40 moves the operation knob 14 from the standby position to the operation position through the first push position and the second push position from the operation position by the cam mechanism 44 every time the operation knob 14 is pushed. Then, the operation of moving to the standby position is repeated. The rear slider 41 is interlocked with the front slider 40 and is released by pressing the main valve 39 and the safety valve 48 backward when the operation knob 14 moves from the standby position to the first pushing position, and the cam mechanism 45 The valve 39 is kept open. Further, the rear slider 41 releases the pressed state of the main valve 39 when the operation knob 14 moves from the operation position to the standby position through the second pushing position.

  The push-push mechanism 24 includes an igniter switch 15 (see FIG. 2) on the right side and a substrate switch 16 (see FIG. 4) on the left side. The igniter switch 15 and the substrate switch 16 are lever switches, and are turned on or off by a driving piece 41A (see FIG. 2) and a driving piece 41B (see FIG. 4) that protrude from the rear slider 41 to the right and left sides, respectively. To be operated.

  The gas flow path portion 22 is connected to the rear side of the push / push mechanism 24. A first gas passage 46 is formed inside the gas flow path portion 22. The first gas passage 46 circulates the gas supplied from a gas supply pipe (not shown) connected to the introduction port 23 opened in the lower part to the flow rate adjusting unit 31. A main valve 39 and a safety valve 48 are provided in the first gas passage 46. The main valve 39 is elastically biased to a closed state in which the first gas passage 46 is closed by the spring 47. As described above, when the main valve 39 is pressed by the rear slider 41 interlocked with the front slider 40 that moves in response to the pressing operation of the operation knob 14, the main valve 39 opens the first gas passage 46. Further, the main valve 39 closes the first gas passage 46 by the spring 47 when the pressing by the rear slider 41 is released. The safety valve 48 is an electromagnetically operated valve that is elastically biased to a closed state in which the first gas passage 46 is closed by a spring 49. When the safety valve 48 is pressed together with the main valve 39 by the rear slider 41 interlocked with the front slider 40 that moves in response to the pressing operation of the operation knob 14, the safety valve 48 opens the first gas passage 46. The safety valve 48 is an electromagnetically operated valve and is kept open by the CPU 101 (see FIG. 6) mounted on the control circuit 100 of the gas stove 1 when opened by the rear slider 41. When the left burner 5 is extinguished by closing the main valve 39, the CPU 101 cancels the open state of the safety valve 48. In this case, the safety valve 48 closes the first gas passage 46 by the spring 49.

  As shown in FIGS. 2 and 3, 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 19 (see FIG. 3) is formed inside the flow rate adjusting unit 31. The second gas passage 19 circulates the gas supplied from the gas flow path portion 22 and supplies the gas to the left burner 5 through a gas supply pipe (not shown) connected to the outlet 32 opened at the top. A hole portion 30 communicating with the second gas passage 19 is formed at the front end portion of the flow rate adjusting portion 31, and the needle valve 28 is inserted therein. The needle valve 28 is arranged such 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 19. A pin 29 extending in the vertical direction is provided at the front end of the needle valve 28.

  The thermal power adjustment cam 26 is formed in a substantially semi-cylindrical shape, and is provided so as to be rotatable around the axis AX so as to cover the upper part of 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 adjustment cam 26. The cam groove 27 is formed in a spiral shape centered on the axis AX. The cam groove 27 engages with a lower end portion of a pin 29 provided on the needle valve 28. When the heating power adjustment 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 adjustment cam 26 includes an extending portion 34 extending forward, and has a tooth portion 35 protruding inward at a front end portion of the extending portion 34. The tooth portion 35 meshes with a tooth portion 38 (described later) of the connecting member 25 when the operation knob 14 is in the operation position (see FIG. 4C), and the heating power adjusting cam 26 is operated via the connecting member 25. At the same time, it rotates about the axis AX. The extending portion 34 includes a tapered portion 34A that narrows in the middle. When a push operation is performed on the operation knob 14, the tapered portion 34 </ b> A engages with the medium heat guide 90 and rotates the medium heat guide 90.

  A substantially semi-cylindrical LED operation member 36 is fixed to the outer peripheral surface of the extending portion 34 of the thermal power adjustment cam 26. The LED operation member 36 is connected to the thermal power display member 70. The thermal power display member 70 performs thermal power display by shielding the LED light. The thermal power display member 70 will be described later. The LED operation member 36 rotates around the axis AX together with the thermal power adjustment cam 26, and displays the thermal power by the thermal power display member 70 according to the gas flow rate. The LED operation member 36 has a groove 36A that narrows from the front to the rear on the lower surface.

  The connecting member 25 extends forward from the front slider 40 of the push-push mechanism 24 and engages with a shaft body 37 having the shaft center AX as an axis. The connecting member 25 is held at the front end portion of the shaft body 37 and is provided so as to be movable in the front-rear direction together with the front slider 40 while being rotatable around the shaft body 37 about the shaft center AX. The operation knob 14 is held at the distal end portion 25A of the connecting member 25, is provided so as to be movable in the front-rear direction together with the connecting member 25, and rotatable about the axis AX. The connecting member 25 has a tooth portion 38 that meshes with the tooth portion 35 of the heating power adjustment cam 26 on the outer peripheral surface of the rear end portion. When the operation knob 14 is in the operation position, the tooth portion 38 of the connecting member 25 meshes with the tooth portion 35 of the heating power adjustment cam 26 to connect the operation knob 14 and the heating power adjustment cam 26. When the operation knob 14 is not in the operation position, the tooth portion 35 of the heating power adjustment cam 26 is positioned 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 heating power adjustment cam 26 is changed. To release.

  The medium heat guide 90 is disposed on the rear side of the connecting member 25. The medium-fire guide 90 is fixed to the shaft body 37 of the front slider 40 and is provided so as to be movable in the front-rear direction together with the front slider 40. The medium fire guide 90 includes a fixed portion 91, a half-rod portion 92, and a guide portion 93. The fixing portion 91 has a cylindrical shape, and fixes the medium fire guide 90 to the shaft body 37. The half hook 92 projects in a hook shape radially outward from the lower part of the front end of the fixed portion 91. The connecting member 25 is provided so as to be rotatable with respect to the front surface of the half collar portion 92.

  The guide portion 93 has a substantially cylindrical shape, and the inner surface of the rear end portion of the lower portion is connected to the outer peripheral portion of the half collar portion 92. The upper part of the guide part 93 is provided with a larger diameter than the lower part, and an opening 94 is formed between the inner surface of the rear end part and the upper part of the front end part of the fixing part 91. The extending portion 34 of the thermal power adjustment cam 26 is inserted through the opening 94. The inner diameter of the lower portion is larger than the maximum diameter of the tooth portion 38 of the connecting member 25. A guide projection 95 is provided on the upper surface of the upper portion of the guide portion 93. The guide protrusion 95 engages with a groove portion 36 </ b> A provided on the lower surface of the LED operation member 36.

  Next, the panel devices 9A and 9B will be described. As shown in FIG. 1, the gas stove 1 is provided with a right burner 4 and a panel device 9 </ b> A for displaying the thermal power of the grill device in the right region of the grill door 8, and the left burner 5 in the left region of the grill door 8. A panel device 9B for displaying the thermal power of the back burner 6 is provided.

  The fuel supply device of the grill device includes a plurality of switches (not shown) that are turned on and off according to the rotation position of the operation knob 12. The flow rate adjustment unit of the grill device adjusts the heating power of the grill burner by switching the open / close state of the plurality of solenoid valves 119 according to the on / off states of the plurality of switches. Therefore, the thermal power display of the grill device is performed by stepwise switching the lighting / extinguishing state of the LEDs provided on the panel device 9A in accordance with the on / off states of the plurality of switches.

  On the other hand, in displaying the thermal power of the right burner 4 in the panel device 9A and the thermal power of the left burner 5 and the back burner 6 in the panel device 9B, the fuel supply device 20 rotates the operation knobs 11, 13, and 14. Does not include an encoder that detects the amount. Therefore, the panel devices 9A and 9B do not perform control for switching the on / off state of the LEDs according to the rotation positions of the operation knobs 11, 13, and 14. In the present embodiment, the panel devices 9 </ b> A and 9 </ b> B transmit the LED light at positions corresponding to the rotational positions of the operation knobs 11, 13, and 14 and shield the LED light at other positions with the thermal power display member 70. Display.

  Hereinafter, the panel device 9B will be described. In addition, the structure of the part which concerns on the thermal power display of the right burner 4 in the panel apparatus 9A is the same as the structure of the part which concerns on the thermal power display of the left burner 5 and the back burner 6 in the panel apparatus 9B. Therefore, the configuration of the panel device 9A is similar to the configuration of the panel device 9B, and the description thereof is omitted.

  As shown in FIG. 5, the panel device 9 </ b> B includes a panel main body portion 50, a display substrate 60, a thermal power display member 70, and a decorative panel 80. The panel main body 50 is assembled to the front end of the housing 2. The lower part 51 of the panel main body 50 is formed in a box shape and accommodates the operation panel 114 (see FIG. 6). The upper part 52 of the panel main body 50 protrudes in a plate shape from the lower part 51 upward. In the upper portion 52, two through holes 53 penetrating in the front-rear direction are formed side by side in the left-right direction. The inner diameter of the through hole 53 is larger than the outer diameter of the operation knobs 13 and 14. The fuel supply devices 20 of the left burner 5 and the back burner 6 are fixed to the upper part 52 of the panel body 50 from the rear side in a state where they are arranged side by side. The connecting members 25 and the operation knobs 13 and 14 of the two fuel supply apparatuses 20 are disposed in the two through holes 53, respectively.

  A plurality of light guide portions 54 are arranged in the circumferential direction on the upper outer peripheral portion of the two through holes 53, respectively. The light guides 54 are cylindrical bodies extending in the front-rear direction, and seven light guides are provided in this embodiment. The cylindrical holes 55 of the respective light guide portions 54 are formed independently of each other.

  A display substrate 60 is fixed to the rear surface of the upper portion 52. The lower end of the display substrate 60 is formed in a double arc shape so as not to interfere with the through hole 53. A plurality of LEDs 61 are mounted on the front surface of the display substrate 60, and are arranged in two arcs along the lower end. In the present embodiment, seven LEDs 61 are provided along two arcs. Each LED 61 is provided at a position corresponding to a position where each tube hole 55 of each light guide portion 54 is formed. When the display substrate 60 is fixed to the panel main body 50, the plurality of LEDs 61 are disposed in the respective cylindrical holes 55 of the light guide unit 54.

  As shown in FIG. 2, 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 outer diameter of the main body 71 is smaller than the inner diameter of the through hole 53 of the panel main body 50, and the inner diameter is larger than the outer diameters of the operation knobs 11, 13, and 14. The main body 71 has two hooks 75 and one engagement portion 74 at three locations in the circumferential direction. The two hooks 75 are hooked on the rear surface of the through hole 53, and hold the thermal power display member 70 so as to be rotatable about the axis AX. The engaging portion 74 engages with an engaging piece 36 </ b> B provided at the tip portion of the LED operation member 36. In the main body 71, the portions sandwiching the engaging portion 74 from both sides in the circumferential direction respectively extend rearward and make it difficult for the engaging piece 36B to come off. The flange portion 76 protrudes radially outward at the front end portion of the main body portion 71, and is formed in a bowl shape that makes one round in the circumferential direction. The flange portion 76 has a notch-shaped light passage portion 77.

  As shown in FIG. 5, the decorative panel 80 is a plate-like body that is assembled to the front side of the upper portion 52 of the panel body 50. The decorative panel 80 includes two openings 86 penetrating in the front-rear direction, and a plurality of light-transmitting parts 81 arranged on top of each opening 86. The decorative panel 80 has a substantially rectangular shape when viewed from the front, and includes a slide lock 85 at the upper end. When the decorative panel 80 is assembled to the upper portion 52 of the panel main body 50, the decorative panel 80 is fixed to the panel main body 50 by sliding the slide lock 85 to the right.

  The two openings 86 are formed side by side in the left-right direction. The inner diameters of the two openings 86 are larger than the outer diameters of the operation knobs 13 and 14, respectively. Operation knobs 13 and 14 are disposed in the two openings 86, respectively. The plurality of light transmitting portions 81 are provided at positions corresponding to the respective positions where the light guide portions 54 are formed when the decorative panel 80 is assembled to the upper portion 52 of the panel main body portion 50. The translucent part 81 emits light emitted from the LED 61 and incident from the rear surface via the light guide part 54 from the front surface of the decorative panel 80 to the front.

  The fuel supply device 20 for the left burner 5 and the fuel supply device 20 for the back burner 6 are secured to the back surface of the panel main body 50 of the panel device 9B with screws using the mounting bracket 33 in a state where they are arranged side by side. The The engagement piece 36 </ b> B of the LED operation member 36 is engaged with the engagement portion 74 of the thermal power display member 70. Therefore, the thermal power display member 70 rotates around the axial center AX in the through hole 53 of the panel main body 50 when the thermal power adjustment cam 26 to which the LED operation member 36 is fixed rotates around the axial center AX.

  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, the ROM 102, the RAM 103, and the timer 104. The CPU 101 performs overall control of various operations of the gas stove 1. The ROM 102 stores various programs of the gas stove 1 including the thermal power display process (see FIG. 8). The RAM 103 temporarily stores various information. The timer 104 is operated by a program, and measures the turn-off time in a thermal power display process described later.

  Connected to the control circuit 100 are 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, an electromagnetic valve circuit 117, an igniter circuit 118, and the like. The power supply circuit 120 steps down the AC (for example, 100V) supplied from the power supply 125 to a direct current (for example, 5V), rectifies, and supplies power to various circuits. In the figure, the power source is represented as “AC”. The switch input circuit 111 detects the on / off states of the igniter switch 15 and the substrate switch 16 of the fuel supply device 20 and inputs them to the power supply circuit 120 and the control circuit 100. The control circuit 100 operates when the substrate switch 16 of any fuel supply device 20 is turned on, and stops operating when the substrate switches 16 of all the fuel supply devices 20 are turned off. The thermocouple input circuit 112 inputs detection values (signals corresponding to thermoelectromotive forces) from the thermocouples 4B, 5B, and 6B to the control circuit 100. The operation panel 114 is used for a timer setting by a user, an input such as selection of thermal power control according to cooking contents, and lighting and extinguishing of LEDs according to the control contents of the CPU 101.

  The LED driver circuit 115 controls turning on and off of the plurality of LEDs 61 mounted on the display substrate 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 electromagnetic valve circuit 117 opens and closes a plurality of electromagnetic valves 119 provided in a flow rate adjustment 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 based on a control signal output from the CPU 101 in accordance with the state of the igniter switch 15. In FIG. 6, the thermistor provided in each of the right burner 4, the left burner 5, and the back burner 6, the thermocouple provided in the grill burner, the igniter, and the like are omitted.

  Next, with reference to FIGS. 1 to 6, the ignition and extinguishing and the adjustment of the heating power by the pushing operation and turning operation of the operation knob 14 will be described based on the timing chart shown in FIG. At time T0, the operation knob 14 is in the standby position. The board switch 16 and the igniter switch 15 are in an off state, and the left burner 5 is in a fire extinguishing state. At T1, in order to ignite the left burner 5, the user starts to push the operation knob 14. With the pushing operation, the front slider 40 and the rear slider 41 start moving backward. The safety valve 48 and the main valve 39 are pressed by the rear slider 41 and opened.

  At time T2, the driving piece 41B of the rear slider 41 comes into contact with the substrate switch 16, and the substrate switch 16 is turned on. Power is supplied to the control circuit 100 and the CPU 101 is driven. The CPU 101 transmits a control signal to the safety valve circuit 116 to maintain the safety valve 48 in an open state. Further, the CPU 101 transmits a control signal to the LED driver circuit 115 to cause the LED 61 to emit light. The LED 61 emits light at a slightly delayed timing by a thermal power display process (see FIG. 8) described later.

  At T3, guidance by the medium-fire guide 90 for making the heating power at the time of ignition medium is started, and the heating-power adjusting cam 26 starts to rotate toward a substantially central position on the left and right. Note that the position at which the heating power adjustment cam 26 actually starts to rotate is a position where the tapered portion 34 </ b> A of the extending portion 34 abuts on the edge of the opening 94. Therefore, the guidance by the medium fire guide 90 is started at T3 if the thermal power adjustment cam 26 is located at both ends of the rotation range, and at T3 when the thermal power adjustment cam 26 is located near the center of the rotation range. It will start later. The thermal power display member 70 also starts to rotate by the LED operation member 36 fixed to the thermal power adjustment cam 26.

  At T4, the drive piece 41A of the rear slider 41 comes into contact with the igniter switch 15, and the igniter switch 15 is turned on. The control circuit 100 transmits a control signal to the igniter circuit 118 to drive the igniter 5A. When the igniter switch 15 is turned on, the control circuit 100 drives the igniter 5A for 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 after a predetermined time has elapsed, transmission of the control signal to the safety valve circuit 116 is stopped and the safety valve 48 is closed. Is done.

  Guidance for setting the heating power by the medium heat guide 90 to medium heat ends at T5. The thermal power adjustment cam 26 is located at the approximate center of the left and right, and the needle valve 28 moves to a position where the gas flow rate is equivalent to the medium fire. Therefore, a sufficient amount of gas is supplied to the left burner 5 and the ignition is ignited. Overflow of time is prevented. Further, the rotation of the thermal power display member 70 ends at T5. At T6, the operation knob 14 reaches the first pushing position.

  When the user releases the operation knob 14 at T7, the operation knob 14 starts to move from the first pushing position toward the operation position by the biasing force of the spring 42 of the front slider 40. Further, the rear slider 41 also starts to move forward by the biasing force of the spring 43 and the spring 47 of the main valve 39. The igniter switch 15 is turned off at T8, but the igniter 5A is driven until a predetermined time elapses from the time when it is turned on.

  At T9, the cam mechanism 45 stops the rear slider 41 from moving forward, and the rear slider 41 reaches the valve opening maintenance position. The rear slider 41 maintains the main valve 39 in the open state and maintains the substrate switch 16 in the on state at the valve opening maintenance position. The front slider 40 continues to move forward after T9, and stops moving when it reaches the operation position at T10. Immediately before reaching the operating position, the tooth portion 38 of the connecting member 25 and the tooth portion 35 of the heating power adjustment cam 26 are engaged with each other, whereby the operation knob 14 is connected to the heating power adjustment cam 26.

  When the operation knob 14 is rotated while the operation knob 14 is in the operation position, the heating power adjustment cam 26 rotates around the axis AX together with the operation knob 14. When the thermal power adjustment 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. Thereby, since the needle valve 28 moves in the front-rear direction, the flow rate of the gas flowing through the second gas passage 19 is adjusted according to the position of the needle valve 28, and the heating 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 a position corresponding to the thermal power passes through the light passing portion 77 of the flange portion 76 and is transmitted from the light transmitting portion 81 of the decorative panel 80. It is emitted and the thermal power is displayed.

  At T11, in order to extinguish the left burner 5, the user starts to push the operation knob 14. With the pushing operation, the front slider 40 starts moving backward. The meshing state of the tooth portion 38 of the connecting member 25 and the tooth portion 35 of the thermal power adjustment cam 26 is released, and the operation knob 14 releases the connection with the thermal power adjustment cam 26. Therefore, even if the operation knob 14 is rotated during the push-in operation during fire extinguishing, the heating power does not change. Moreover, since the thermal power display member 70 does not rotate, the thermal power display does not change.

  At T12, the front slider 40 contacts the rear slider 41 and presses the rear slider 41 rearward. The front slider 40 and the rear slider 41 move backward by a pushing operation. At T13, the operation knob 14 reaches the second pushing position. When the user releases the operation knob 14 at T14, the operation knob 14 is moved to the first pushing position by the biasing force of the spring 42 of the front slider 40, the spring 43 of the rear slider 41, and the spring 47 of the main valve 39. Starts moving toward the standby position. Further, the rear slider 41 also starts to move forward by the biasing force of the spring 43 and the spring 47 of the main valve 39.

  At T15, the substrate switch 16 is turned off. The control circuit 100 stops transmission of the control signal to the safety valve circuit 116 and cancels the electromagnetic operation of the safety valve 48. Since the safety valve 48 is closed by the biasing force of the spring 49, the left burner 5 from which the supply of gas has been cut off is extinguished. At T16, the operation knob 14 reaches the standby position. Since the rear slider 41 is also located at the front end of the moving range together with the front slider 40, the main valve 39 is closed.

  By the way, as described above, at the time of ignition, the LED 61 for displaying the thermal power is turned on when the substrate switch 16 is turned on and the control circuit 100 is driven. In the ignition process, when the thermal power adjustment cam 26 is rotated by the medium-fire guide 90, the thermal power display member 70 is also rotated, so that the state of the thermal power display may change. Therefore, the gas stove 1 waits for the thermal power display during the ignition process when the CPU 101 of the control circuit 100 performs the thermal power display process.

  Hereinafter, the thermal power display process will be described with reference to FIG. When the user pushes the operation knob 14 at 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. To do. When the board switch 16 is turned on, the CPU 101 starts executing the thermal power display process in parallel with other control processes. The CPU 101 drives the timer 104 and starts measuring the turn-off time (S1). The CPU 101 does not transmit a control signal to the LED driver circuit 115 until the turn-off time has elapsed, and waits for processing (S2: NO). The turn-off time is 500 ms, for example, and is set to a time sufficient for the operation knob 14 to move from the standby position to the first push position by the push operation. Therefore, even if the thermal power display member 70 is rotated by the medium heat guide 90 during the pushing operation, the LED 61 is in the extinguished state, so the thermal power display is not performed and the thermal power display state does not change.

  When the turn-off time has elapsed (S2: YES), the CPU 101 transmits a control signal to the LED driver circuit 115, turns on the LED 61, and starts a thermal display. An appropriate thermal power display corresponding to the thermal power of the left burner 5 is performed by the LED light. The CPU 101 waits for processing while the substrate switch 16 is on (S4: NO). When the user performs a push-in operation on the operation knob 14 at the operation position and extinguishes the left burner 5, the board switch 16 is turned off. The control circuit 100 stops transmitting the control signal to the LED driver circuit 115 and turns off the LED 61 (S5). The CPU 101 ends the execution of the thermal power display process. Although the above-described thermal power display process is a process for the thermal power display of the left burner 5, the same thermal power display process is executed for the thermal power display of the right burner 4 and the back burner 6.

  As described above, when the left burner 5 is ignited, the gas flow path portion 22 supplies gas to the left burner 5 in conjunction with the pushing operation on the operation knob 14, and the igniter circuit 118 drives the igniter 5A to generate gas. Ignite. Since the thermal power adjustment cam 26 operates in conjunction with the operation knob 14 together with the gas flow path section 22 and the igniter circuit 118, there is a possibility that the thermal power adjustment cam 26 operates due to the pushing operation at the time of ignition. The panel device 9B displays the ignition state and the thermal power state of the left burner 5 by the thermal power display member 70 mechanically interlocked with the thermal power adjustment cam 26. Since the thermal power display member 70 is also operated by the operation of the thermal power adjustment cam 26, the thermal power display member 70 causes a change in the display of the ignition state and the thermal power state of the left burner 5. By the way, when the user performs a pushing operation on the operation knob 14 for an ignition operation, the operation knob 14 is rotated due to an erroneous operation or the like, and the adjustment operation of the heating power is performed unintentionally. If there is no connecting member 25 and the operation knob 14 and the thermal power adjustment cam 26 are always in a linked state, the display state of the panel device 9B changes, and the user may be confused. Therefore, the CPU 101 of the control circuit 100 maintains the LED 61 in the extinguished state until a predetermined extinguishing time elapses after the substrate switch 16 is turned on. If LED61 is a light extinction state, the display of the ignition state and thermal power state of the left burner 5 by the panel apparatus 9B will not be performed. The fire extinguishing time is desirably a time required for the ignition of the left burner 5 to be completed after the substrate switch 16 is turned on. Even if the thermal power display member 70 operates in the meantime, the display of the ignition state and the thermal power state is not performed on the panel device 9B, so that the user is not confused.

  When the left burner 5 is ignited by a pressing operation on the operation knob 14, the medium-fire guide 90 is mechanically interlocked with the heat-power adjusting cam 26 and adjusts the gas supply amount to an ignition amount (medium-fire). Therefore, the thermal power display member 70 mechanically interlocked with the thermal power adjustment cam 26 may cause a change in the ignition state and thermal power state display of the left burner 5 when the thermal power adjustment cam 26 operates during the ignition operation. There is. The CPU 101 of the control circuit 100 maintains the LED 61 in the extinguished state until a predetermined fire extinguishing time elapses after the substrate switch 16 is turned on. Thereby, the display of the ignition state and the thermal power state of the left burner 5 by the panel device 9B is not performed for a predetermined fire extinguishing time after the substrate switch 16 is turned on. Even if the thermal power display member 70 operates in the meantime, the display of the ignition state and the thermal power state is not performed on the panel device 9B, so that the user is not confused.

  In addition, this invention is not limited to the said embodiment, A various change is possible. The CPU 101 executes the thermal power display process when the board switch 16 changes from the OFF state to the ON state. However, the CPU 101 may execute the thermal power display process when the igniter switch 15 changes from the OFF state to the ON state. Separately, a switch that triggers execution of the thermal power display process may be provided. Further, the CPU 101 may execute the thermal power display process when the board switch 16 is switched from the on state to the off state. In this case, the substrate switch 16 may be in an on state when the CPU 101 is not driven and may be in an off state when driven.

  The turn-off time is not limited to 500 ms and may be changed as appropriate. The fuel supply device 20 performs the operation of ignition / extinguishing and the operation of adjusting the thermal power, but may be performed by separate devices. Although 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 operation, a heating power adjustment lever may be provided to adjust the heating power by lever operation. In this case, the operation knob may function as an ignition button with an ignition operation. Even if the thermal power adjustment lever and the ignition button are provided separately, when the user operates the ignition button for the ignition operation, the user accidentally touches the thermal power adjustment lever and the adjustment operation is performed. May end up. Even in this case, the display of the ignition state and the thermal power state is displayed on the panel device 9B even if the thermal power display member 70 operates according to the adjustment operation by waiting for the thermal power display during the ignition operation as in the present embodiment. Because it is not done, the user will not be confused.

  In addition, the fuel supply device 20 has a configuration in which the guidance for setting the heating power by the medium-fire guide 90 to medium heat ends at T5 after T4 when the igniter switch 15 shifts to the ON state in the ignition operation. (Refer FIG. 7), It is not restricted to this. For example, the configuration may be such that the guidance for turning the heating power by the medium-fire guide 90 to medium-fire ends before the time T4 when the igniter switch 15 shifts to the ON state. In the case of this configuration, if the CPU 101 executes the thermal power display process when the igniter switch 15 is turned on, the thermal power display member 70 is turned on after the LED 61 is lit even if the standby time is 0 s. It does not operate due to the guidance by the medium fire guide 90. However, the movement distance of the front slider 40 and the rear slider 41 when the operation knob 14 moves from the standby position to the first pushing position during ignition is relatively short. Therefore, the timing when the igniter switch 15 shifts to the ON state and the timing when the guidance by the medium-fire guide 90 ends may be reversed depending on individual differences of products. Even in such a case, by waiting for the display of the thermal power during the ignition operation as in the present embodiment, even if the thermal power display member 70 operates according to the adjustment operation, the panel device 9B has an ignition state and a thermal power state. Since no display is made, the user is not confused.

  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” in the present invention. The thermal power adjustment cam 26 is an example of the “adjustment mechanism” in the present invention. The igniter circuit 118 and the igniters 4A, 5A, 6A are examples of the “ignition mechanism” of the present invention. The operation knobs 11, 13, and 14 are examples of the “operation unit” in the present invention. The push / push mechanism 24 and the flow rate adjusting unit 31 are examples of the “operation mechanism” of the present invention. The substrate switch 16 is an example of the “detection switch” in the present invention. The LED 61 is an example of the “light emitting unit” in the present invention. The CPU 101 is an example of the “control unit” in the present invention. The panel devices 9A and 9B are examples of the “display device” of the present invention. The thermal power display member 70 is an example of the “mode change portion” in the present invention. The medium fire guide 90 is an example of the “adjusting member” in the present invention.

DESCRIPTION OF SYMBOLS 1 Gas stove 2 Housing | casing 4 Right burner 5 Left burner 6 Back burners 4A, 5A, 6A Igniters 9A, 9B Panel devices 11, 13, 14 Flow controller 61 LED
70 Thermal power display member 90 Medium fire guide 101 CPU
118 Igniter circuit

Claims (2)

A supply mechanism for supplying and shutting off gas to a burner disposed at the top of the housing;
An adjusting mechanism for adjusting the amount of gas supplied when supplying gas to the burner;
An ignition mechanism for igniting the gas supplied to the burner;
An ignition operation for igniting a gas in conjunction with the ignition mechanism while supplying gas to the burner in conjunction with the supply mechanism in response to an operation on an operation unit provided corresponding to the burner; An operation mechanism for performing an adjustment operation for adjusting the amount of gas supplied to the burner in conjunction with a fire extinguishing operation for shutting off the gas supplied to the burner in conjunction with the supply mechanism;
A detection switch in which the on / off state changes from one state to the other state in the course of the ignition operation by the operation mechanism;
A control unit that shifts the light emitting unit from the extinguished state to the light emitting state when the detection switch changes from the one state to the other state;
A display device that is fixed to the front portion of the housing and displays an ignition state indicating whether or not the burner is ignited and a thermal power state indicating the amount of gas supplied to the burner according to the light emission mode of the light emitting unit; ,
A gas stove equipped with
The display device includes a mode change unit that mechanically interlocks with the adjustment mechanism and changes a mode of light emission of the light emitting unit,
The control unit shifts the light emitting unit to a light emitting state after maintaining the light emitting unit in a light-off state for a predetermined time after the detection switch changes from the one state to the other state. Gas stove to do.   Adjustment that adjusts the supply amount of gas supplied to the burner to an ignition amount that is necessary for ignition of the burner by mechanical interlocking with the adjustment mechanism in the process of the ignition operation by the operation mechanism The gas stove according to claim 1, further comprising a member.

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