Gas cooking stove

Abstract

To make discomfort due to deviation of a spark sound less likely to be provided to a user even when a plurality of igniter devices are installed to a gas cooking stove.SOLUTION: In a gas cooking stove 1, one igniter device 26A supplies igniting power to any one second ignition electrode of second ignition electrodes P4, P5, P6 for igniting a grill burner 54. The other igniter device 26B is configured to be capable of supplying igniting power to first ignition electrodes P1, P2, P3, a second ignition electrode other than the second ignition electrode that receives power supplied from the one igniter device 26A, and a third ignition electrode P7 at the same time. The second ignition electrode P6 that receives power supplied from the one igniter device 26A is the electrode disposed in the deepest position in a housing 2 or the electrode disposed in the farthest position from the center in a horizontal direction of a front end of a top plate 3, of the whole ignition electrodes supplied with igniting power from the one igniter device 26A and the other igniter device 26B.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present disclosure relates to gas stoves. [Background technology]

[0002] Patent Document 1 discloses a gas stove equipped with a stove burner and a grill burner. Each stove section of this gas stove is provided with a stove burner supported within a housing, and within the grill chamber, a flat-shaped upper grill burner is installed at the top and a lower grill burner is installed at the bottom. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-071920 [Patent Document 2] Japanese Patent Publication No. 2022-150884 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional gas stoves, including the gas stove of Patent Document 1, discharge electrodes are provided in close proximity to the stove burner or grill burner, and an igniter device that supplies ignition power to each discharge electrode is provided inside the housing and is electrically connected to each discharge electrode.

[0005] Meanwhile, gas stoves equipped with afterburners are also available, as in Patent Document 2. In such a configuration that includes an afterburner in addition to a typical grill burner, the number of burners to be ignited increases, which often necessitates the addition of additional igniter devices. However, as the number of igniter devices increases, the spark sound from one igniter device tends to deviate from the spark sound from another igniter device, and this deviation can cause discomfort to the user.

[0006] One of the objects of the present disclosure is to provide a technology that is less likely to cause discomfort to users due to mismatched spark sounds, even when multiple igniter devices are installed on a gas stove. [Means for solving the problem]

[0007] The gas stove that is one of the disclosures is One or more stove burners that emit flames upward; A housing configured to accommodate at least a portion of the stove burner and having an open upper end; a top plate attached to an upper end of the housing and partially closing an opening on the upper end side of the housing; A grill device housed in the housing and having a grill chamber and a plurality of grill burners that heat the inside of the grill chamber; An exhaust duct having an exhaust port and guiding smoke generated in the grill chamber to the exhaust port for exhaust; One or more afterburners that heat at least one of smoke or odor components generated in the grill chamber; a first ignition electrode for igniting the stove burner; a plurality of second ignition electrodes for igniting the grill burner; a third ignition electrode for igniting the afterburner; a plurality of igniter devices for supplying power for ignition; Equipped with One igniter device among the plurality of igniter devices supplies ignition power to any one of the plurality of second ignition electrodes, the other igniter devices among the plurality of igniter devices are capable of simultaneously supplying ignition power to the first ignition electrode, the second ignition electrode other than the second ignition electrode that receives power supply from the one igniter device, and the third ignition electrode; The second ignition electrode that receives power from the one igniter device is the electrode that is located at the deepest position within the housing when the top plate is used as a reference, or the electrode that is located at the farthest position from the center in the left-right direction of the front end of the top plate, among all the ignition electrodes that receive power for ignition by the one igniter device and the other igniter device.

[0008] The gas stove that is one of the disclosures is One or more stove burners that emit flames upward; A housing configured to accommodate at least a portion of the stove burner and having an open upper end; a top plate attached to an upper end of the housing and partially closing an opening on the upper end side of the housing; A grill chamber housed in the housing; A plurality of grill burners housed in the housing and heating the interior of the grill chamber; An exhaust duct having an exhaust port and guiding smoke generated in the grill chamber to the exhaust port for exhaust; One or more afterburners that heat at least one of smoke or odor components generated in the grill chamber; a first ignition electrode for igniting the stove burner; a plurality of second ignition electrodes for igniting the grill burner; a third ignition electrode for igniting the afterburner; a plurality of igniter devices for supplying power for ignition; Equipped with The plurality of grill burners include an upper burner and one or more lower burners arranged below the upper burner, One igniter device among the plurality of igniter devices supplies ignition power to any one of the second ignition electrodes among the plurality of second ignition electrodes for igniting the lower burner, another igniter device among the plurality of igniter devices is capable of simultaneously supplying ignition power to the first ignition electrode, the second ignition electrode other than the second ignition electrode that receives power supply from the one igniter device, and the third ignition electrode; The second ignition electrode to which the one igniter device supplies power for ignition is disposed at a position lower than the first ignition electrode, the second ignition electrode for igniting the upper burner, and the third ignition electrode. [Effects of the Invention]

[0009] According to the technology disclosed herein, even when a gas stove is provided with multiple igniter devices, the user is less likely to experience discomfort due to the difference in spark sounds. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view schematically illustrating a gas stove according to a first embodiment. [Figure 2] FIG. 2 is a front view of the gas stove of FIG. [Figure 3] FIG. 3 is an explanatory diagram schematically showing a gas supply structure to each gas burner in the gas stove of FIG. [Figure 4] FIG. 4 is a block diagram illustrating an example of the electrical configuration of the gas stove of FIG. [Figure 5] FIG. 5 is a perspective cross-sectional view illustrating a configuration of the gas stove of FIG. 1, with a part cut at a predetermined position. [Figure 6] FIG. 6 is a perspective view of a part of the gas stove of FIG. 1 as seen from the rear side. [Figure 7] 7 is a perspective cross-sectional view illustrating a configuration of a part of the gas stove of FIG. 1 cut at a position different from that of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] Each of the following [1] to [5] is an example of a characteristic technique included in the present disclosure.

[0012] [1] One or more stove burners that emit flames upward; A housing configured to accommodate at least a portion of the stove burner and having an open upper end; a top plate attached to an upper end of the housing and partially closing an opening on the upper end side of the housing; A grill device housed in the housing and having a grill chamber and a plurality of grill burners that heat the inside of the grill chamber; An exhaust duct having an exhaust port and guiding smoke generated in the grill chamber to the exhaust port for exhaust; One or more afterburners that heat at least one of smoke or odor components generated in the grill chamber; a first ignition electrode for igniting the stove burner; a plurality of second ignition electrodes for igniting the grill burner; a third ignition electrode for igniting the afterburner; a plurality of igniter devices for supplying power for ignition; Equipped with One igniter device among the plurality of igniter devices supplies ignition power to any one of the plurality of second ignition electrodes, the other igniter devices among the plurality of igniter devices are capable of simultaneously supplying ignition power to the first ignition electrode, the second ignition electrode other than the second ignition electrode that receives power supply from the one igniter device, and the third ignition electrode; The second ignition electrode that receives power from the first igniter device is the electrode that is located at the deepest position within the housing when the top plate is used as a reference, or the electrode that is located at the farthest position from the center in the left-right direction of the front end of the top plate, among all the ignition electrodes that receive power for ignition from the first igniter device and the other igniter device. Gas stove.

[0013] The gas stove described in [1] above can perform ignition operations by dividing the ignition operation into at least two igniter devices when the number of ignition electrodes is large. However, when performing ignition operations by dividing the ignition operation into two igniter devices in this manner, when attempting to perform ignition operations simultaneously using the two igniter devices, the power supply timing may not be synchronized accurately, resulting in ignition timing mismatches. Specifically, the ignition timing of the electrode ignited by power supply from one igniter device may differ from the ignition timing of the electrode ignited by power supply from the other igniter device, which may cause discomfort to the user if no measures are taken. In this regard, in the gas stove described in [1] above, one igniter device supplies ignition power to one of the multiple second ignition electrodes. Meanwhile, the other igniter device can simultaneously supply ignition power to the first ignition electrode, the second ignition electrode other than the second ignition electrode receiving power from the one igniter device, and the third ignition electrode. Because of this configuration, even if the ignition timing of any of the second ignition electrodes performed by the one igniter device and the ignition timing of the other ignition electrodes performed by the other igniter device are slightly different, the ignition sound of "any of the second ignition electrodes" is easily drowned out by the multiple synchronized ignition sounds generated by the many other ignition electrodes, making it less likely that the user will feel uncomfortable. Furthermore, the "second ignition electrode receiving power from one igniter device" is the electrode located at the deepest position within the housing or the electrode located at the farthest position from the center in the left-right direction of the front end of the top plate among all the ignition electrodes receiving power for ignition from one igniter device and other igniter devices, so the ignition sound of the "second ignition electrode receiving power from one igniter device" is even less likely to reach the user, and the effect of drowning out this ignition sound by the "multiple synchronized ignition sounds" can be further enhanced.

[0014] [2] One or more stove burners that emit flames upward; A housing configured to accommodate at least a portion of the stove burner and having an open upper end; a top plate attached to an upper end of the housing and partially closing an opening on the upper end side of the housing; A grill device housed in the housing and having a grill chamber and a plurality of grill burners that heat the inside of the grill chamber; An exhaust duct having an exhaust port and guiding smoke generated in the grill chamber to the exhaust port for exhaust; One or more afterburners that heat at least one of smoke or odor components generated in the grill chamber; a first ignition electrode for igniting the stove burner; a plurality of second ignition electrodes for igniting the grill burner; a third ignition electrode for igniting the afterburner; a plurality of igniter devices for supplying power for ignition; Equipped with The plurality of grill burners include an upper burner and one or more lower burners arranged below the upper burner, One igniter device among the plurality of igniter devices supplies ignition power to any one of the second ignition electrodes among the plurality of second ignition electrodes for igniting the lower burner, another igniter device among the plurality of igniter devices is capable of simultaneously supplying ignition power to the first ignition electrode, the second ignition electrode other than the second ignition electrode that receives power supply from the one igniter device, and the third ignition electrode; The second ignition electrode to which the one igniter device supplies power for ignition is disposed at a lower position than the first ignition electrode, the second ignition electrode for igniting the upper burner, and the third ignition electrode. Gas stove.

[0015] In the gas stove described in [2] above, when the number of ignition electrodes is large, the ignition operation can be performed by dividing the operation into at least two igniter devices. However, when dividing the ignition operation into two igniters in this way, when attempting to perform ignition simultaneously using the two igniters, the power supply timing may not be synchronized accurately, resulting in a mismatch in ignition timing. Specifically, the ignition timing of the electrode ignited by power supplied from one igniter device may differ from the ignition timing of the electrode ignited by power supplied from the other igniter device, which may cause discomfort to the user if no measures are taken. In this regard, in the gas stove described in [2] above, one igniter device supplies ignition power to one of the second ignition electrodes used to ignite the lower burner. Meanwhile, the other igniter device can simultaneously supply ignition power to the first ignition electrode, the second ignition electrode other than the second ignition electrode supplied with power from the first igniter device, and the third ignition electrode. Because of this configuration, even if the ignition timing of the second ignition electrode performed by the first igniter device and the ignition timing of the other burners performed by the other igniter device are slightly different, the "synchronized ignition sounds based on the operation of the other igniter device" easily drown out the "ignition sound based on the first igniter device," making it less likely to cause discomfort to the user. Furthermore, because the second ignition electrode to which the first igniter device supplies ignition power is positioned lower than the first ignition electrode, the second ignition electrode for igniting the upper burner, and the third ignition electrode, the ignition sound based on the first igniter device is even less likely to reach the user and is even more likely to be drowned out by the synchronized ignition sounds.

[0016] [3] The plurality of grill burners include upper burners and lower burners arranged at a lower position than the upper burners, the afterburner is disposed rearward of the upper burner and above the plurality of lower burners, a plurality of second ignition electrodes for igniting the lower burner are provided; Among the plurality of second ignition electrodes for igniting the lower burner, any one of the second ignition electrodes is an electrode that receives ignition power from one of the igniter devices, is an electrode that is located at the deepest position within the housing or an electrode that is located at the farthest position from the center in the left-right direction of the front end of the top plate, and is located closer to the bottom wall than the center position in the up-down direction of the housing and closer to the rear wall than the center position in the front-rear direction of the housing, and the other second ignition electrodes are electrodes that receive ignition power from the other igniter device. A gas stove according to [1] or [2].

[0017] Gas stoves like the one described in [3] above, which have upper and lower burners as grill burners, an afterburner, and multiple second ignition electrodes for the lower burner, tend to have a larger number of ignition electrodes. However, providing multiple igniter devices as described above makes it easier to accommodate the increased number of ignition electrodes. Furthermore, in the gas stove described in [3] above, the multiple second ignition electrodes for the lower burner are intentionally assigned to one igniter device and another igniter device, thereby further enhancing the effect of eliminating ignition discrepancies. Specifically, by assigning one igniter device to one second ignition electrode rather than assigning one igniter device to all of the multiple second ignition electrodes for igniting the lower burner, the impact of the ignition sound of this electrode on the user is further reduced. Furthermore, this electrode is the deepest electrode in the housing or the electrode farthest from the center of the front edge of the top plate in the left-right direction, and is positioned closer to the bottom wall than the center of the housing in the up-down direction and closer to the back wall than the center of the housing in the front-to-back direction, so the impact of the ignition sound of this electrode on the user is further reduced. Meanwhile, in the above gas stove, another ignition device is assigned to the other second ignition electrode for igniting the lower burner, so that ignition operation is synchronized with many other ignition electrodes. Therefore, the "synchronized ignition sound" generated by the operation of the other igniter device becomes even louder, further increasing the effect of drowning out the ignition sound generated by the operation of one igniter device.

[0018] [4] The plurality of grill burners include an upper burner and one or more lower burners arranged below the upper burner; the housing has a bottom wall and a rear wall that covers the exhaust duct from the rear, a supply passage for supplying fuel gas to the lower burner is provided on the front side of the rear wall behind the lower burner, The igniter device is attached to either a position near the rear end of the bottom wall or to the rear wall, with at least a portion of the igniter device being adjacent to the rear wall rather than the supply path in the space rearward of the supply path and forward of the rear wall. A gas stove according to [1] or [2].

[0019] In the gas stove described above in [4], the igniter device can be placed in the space behind the supply passage, which supplies fuel gas to the lower burner, and in front of the rear wall. Furthermore, since the igniter device is attached adjacent to the rear wall and at least either to the rear end of the bottom wall or to the rear wall, it is easy to guide the igniter device along the rear wall when attaching or detaching it.

[0020] [5] The plurality of grill burners include an upper burner and one or more lower burners arranged below the upper burner; a rear end opening is provided on the top plate above the exhaust port at a position near the rear end of the top plate, for passing exhaust gas released from the exhaust port; The afterburner is located rearward of the upper burner and above the lower burner in the grill chamber, an ignition sound generated when the third ignition electrode is ignited is emitted above the top plate through the exhaust port and the rear end opening, The one igniter device supplies ignition power to the second ignition electrode for igniting at least one of the lower burners. A gas stove according to [1] or [2].

[0021] In the gas stove described in [5] above, the afterburner is located behind the upper burner and above the lower burner within the grill chamber. The ignition sound produced when the third ignition electrode for the afterburner is ignited is emitted above the top plate through the exhaust port and the rear-end opening. This configuration makes the ignition sound produced when the third ignition electrode is ignited easier for the user to hear, and the "synchronized ignition sounds" produced by the operation of other igniter devices become even louder, further increasing the effect of drowning out the "ignition sounds produced by the operation of one igniter device" produced below the afterburner.

[0022] First Embodiment The following description relates to the first embodiment. 1. Overview of Gas Stove 1 The gas stove 1 shown in Figures 1 and 2 is configured as a built-in stove capable of heating cooking utensils such as cooking pots. The gas stove 1 has an outer shell (case body) formed by a stove main body 1A, and various components such as a gas burner are housed inside the stove main body 1A. The stove main body 1A includes a box-shaped housing 2, a top plate 3 fixed to the upper end of the housing 2, and panel portions 70A, 70B (upper panel portion) and 80A, 80B (lower panel portion) fixed to the front end of the housing 2. The housing 2 is configured to house stove burners 51, 52, 53 and a grill burner 54 (described below), and is configured to have openings on both upper and lower ends. The top plate 3 is attached to the upper end of the housing 2 and is configured to partially close the opening on the upper end side of the housing 2.

[0023] In this specification, in gas stove 1, the thickness direction of top plate 3 is the up-down direction, the direction parallel to the rotation axes of operation buttons (rotary operation units) 6A, 6B, 6C, and 6D is the front-rear direction, and the direction perpendicular to the up-down and front-rear directions is the left-right direction. In Fig. 2, the left-right direction is the left-right direction of gas stove 1, and the up-down direction is the up-down direction of gas stove 1. In the example of Fig. 1, the front and rear ends of rectangular top plate 3 extend along the left-right direction, and the left and right ends of top plate 3 extend along the front-rear direction.

[0024] The gas stove 1 has a right burner section 4A, a left burner section 4B, and a rear burner section 4C, each of which is exposed from a top plate 3 that forms the upper surface of the stove main body 1A. A grill compartment 5A is provided near the center of the interior of the stove main body 1A below the top plate 3 and can be opened and closed by a grill door 5B. Gas burners 51, 52, and 53 are provided in the right burner section 4A, the left burner section 4B, and the rear burner section 4C, as shown in FIG. 3, and a grill burner 54 is provided inside the grill compartment 5A. The burners 51, 52, and 53 are gas burners that emit flames toward the upper side of the top plate 3. The grill burner 54 is a gas burner that heats the interior of the grill compartment 54 within the housing 2.

[0025] Branch supply passages 61, 62, 63, 64 are connected to stove burners 51, 52, 53 and grill burner 54, respectively, and these branch supply passages 61, 62, 63, 64 branch off from common supply passage 60. Common supply passage 60 is provided with a main solenoid valve N1 that opens and closes common supply passage 60, and each branch supply passage 61, 62, 63 is provided with solenoid valves (safety valves) 51G, 52G, 53G that can open and close each branch supply passage 61, 62, 63, shut-off valves 51F, 52F, 53F, and heat adjustment valves 51E, 52E, 53E, respectively. The safety valve 51G, the shut-off valve 51F, and the heat power adjustment valve 51E are driven by a stepping motor M1, the safety valve 52G, the shut-off valve 52F, and the heat power adjustment valve 52E are driven by a stepping motor M2, and the safety valve 53G, the shut-off valve 53F, and the heat power adjustment valve 53E are driven by a stepping motor M3.

[0026] The grill burners 54 of the grill chamber 5A include an upper burner 54A located on the upper side within the grill chamber 5A and a lower burner 54B located on the lower side. The lower burner 54B is located lower than the upper burner 54A. A branch supply path 64 branches off from the common supply path 60 and leads gas to the grill burners 54. A first supply path 65A leads gas to the upper burner 54A, and a second supply path 65B leads gas to the lower burner 54B. The gas supply is controlled by a solenoid valve 54G, a shut-off valve 54F, and solenoid valves 54H, 54J, and 54K.

[0027] 1 and 2, four operation buttons (rotary operation units) 6A, 6B, 6C, and 6D for ignition, extinguishing, and heat adjustment are provided for right burner unit 4A, left burner unit 4B, rear burner unit 4C, and grill chamber 5A, respectively. As shown in Fig. 4, switches 30A, 30B, 30C, and 30D are provided corresponding to operation buttons (rotary operation units) 6A, 6B, 6C, and 6D, respectively, and ignition signal input circuits 40A, 40B, 40C, and 40D are provided corresponding to switches 30A, 30B, 30C, and 30D, respectively. Furthermore, displacement detectors 32A, 32B, 32C, and 32D are provided corresponding to the operation buttons (rotary operation units) 6A, 6B, 6C, and 6D, respectively, and thermal power signal input circuits 42A, 42B, 42C, and 42D are provided corresponding to the displacement detectors 32A, 32B, 32C, and 32D, respectively. The control circuit 10 is configured as, for example, a microcomputer and includes a CPU 10A, a ROM 10B, and a RAM 10C. The control circuit 10 controls the solenoid valves, igniter devices 26A and 26B, motors M1, M2, M3, and M4, non-volatile memory 16, and the like. The operation unit 18 is configured with a known input interface such as an operation button or a touch panel. The power supply circuit 48 receives power from batteries 49 (e.g., two dry batteries) housed in a battery box and generates a predetermined power supply voltage.

[0028] 2. Grilling equipment and afterburner configuration The grill device 5 is a device housed within the housing 2 and capable of heating food items inside the housing 2. It has a grill chamber 5A housed within the housing 2 and a grill burner 54, which is a gas burner that heats the interior of the grill chamber 5A inside the housing 2. The grill chamber 5A is formed in a substantially rectangular box shape and includes an upper wall, a right wall, a left wall, and a bottom wall. A grill opening that is rectangular in front view is provided on the front side of the grill chamber 5A. An upper burner 54A that functions as the grill burner 54 is provided on the upper wall. The upper burner 54A forms a flame toward the interior of the grill chamber 5A. A lower burner 54B that also functions as the grill burner 54 is provided below the upper burner 54A.

[0029] The grill door 5B shown in FIG. 1 is provided at the front of the grill chamber 5A and opens and closes the grill opening. A support frame is fixed to the lower back of the grill door 5B. The support frame detachably supports the grill grate and the tray. The support frame is supported so that it can move forward and backward by rail mechanisms provided on both the left and right sides of the upper surface of the bottom wall 14 of the grill chamber 5A. Due to this configuration, the grill door 5B can be pulled out toward the front together with the support frame, allowing the grill grate and the tray to be simultaneously removed outside the grill chamber 5A.

[0030] An exhaust duct 7 is provided at the rear side of the grill chamber 5A. The exhaust duct 7 has an exhaust port 7A at its rear and upper end, and is configured to guide and exhaust smoke generated in the grill chamber 5A through the exhaust port 7A. The exhaust port 7A opens upward and is formed in a roughly rectangular shape that is long in the left-right direction in a plan view. The exhaust duct 4 is formed in a roughly rectangular tube shape that extends from the rear of the grill chamber 5A at an angle rearward and upward. The space inside the exhaust duct 4 communicates with the space inside the grill chamber 5A. Combustion exhaust generated in the grill chamber 5A flows upward inside the exhaust duct 7 and is discharged to the outside through the exhaust port 7A.

[0031] As shown in FIG. 5, an afterburner unit 190 is provided inside the grill chamber 5A or the exhaust duct 7. The afterburner unit 190 includes an afterburner 180. The afterburner 180 is a gas burner with its flame port located in the space inside the grill chamber 5A or the exhaust duct 7, and heats at least one of the smoke and odor components generated in the grill chamber 5A. In the example shown in FIG. 5, the afterburner 180 is arranged behind the upper burner 54A and above the lower burner 54B, side by side with the upper burner 54. This afterburner 180 functions to heat and reduce oily smoke and odor components generated from ingredients contained in the combustion exhaust.

[0032] 3. Configuration of igniter device, ignition electrode, etc. As shown in Figure 4, the gas stove 1 is provided with first ignition electrodes P1, P2, and P3 for igniting the stove burners 51, 52, and 53, respectively, as well as second ignition electrodes P4, P5, and P6 for igniting the grill burner 54 and a third ignition electrode P7 for igniting the afterburner 180. The first ignition electrode P1 is an electrode for igniting the stove burner 51, the first ignition electrode P2 is an electrode for igniting the stove burner 52, and the first ignition electrode P3 is an electrode for igniting the stove burner 53. The second ignition electrode P4 is an electrode for igniting the upper burner 54A. The second ignition electrode P5 is an electrode for igniting the first region of the lower burner 54B, and the second ignition electrode P6 is an electrode for igniting the second region of the lower burner 54B.

[0033] The igniter device 24A corresponds to an example of one igniter device. The igniter device 24A is configured to supply ignition power to a specific second ignition electrode P6 among the plurality of second ignition electrodes P4, P5, and P6.

[0034] The igniter device 24B corresponds to an example of another igniter device. The igniter device 24B is capable of simultaneously supplying ignition power to the first ignition electrodes P1, P2, and P3, the second ignition electrodes P4 and P5 other than the second ignition electrode P6 that receives power from the "one igniter device," and the third ignition electrode P7. In this way, the second ignition electrodes P4 and P5 are electrodes that receive ignition power from the other igniter device 26B.

[0035] Specifically, when an ignition operation (e.g., a pressing operation) is performed on any of the operation buttons (rotary operation units) 6A, 6B, 6C, and 6D to ignite one of stove burners 51, 52, and 53 and grill burner 54, control circuit 10 provides a drive signal to igniter devices 24A and 24B in response to the ignition operation, and igniter devices 24A and 24B supply high-voltage power for ignition to the ignition electrodes in response to the drive signal, thereby generating spark discharge at all of ignition electrodes P1 to P7. In other words, even when one burner is being burned, spark discharge is generated at all of ignition electrodes P1 to P7.

[0036] Thus, when the control circuit 10 provides a drive signal to the igniter devices 24A and 24B in response to an ignition operation, the igniter device 24B simultaneously supplies high-voltage ignition power to the first ignition electrodes P1, P2, and P3, the second ignition electrodes P4 and P5, and the third ignition electrode P7 in response to the drive signal from the control circuit 10. This causes spark discharges at the first ignition electrodes P1, P2, and P3, the second ignition electrodes P4 and P5, and the third ignition electrode P7 at the same time or very close to each other, generating spark sounds at the same time or very close to each other. Meanwhile, the igniter device 24A supplies high-voltage ignition power to the second ignition electrode P6 in response to the drive signal from the control circuit 10. This causes spark discharges at the second ignition electrode P6, generating spark sounds. However, because igniter device 24A and igniter device 24B are separate devices, even if control circuit 10 sends drive signals to igniter devices 24A and 24B at approximately the same time, it is difficult to synchronize the timing at which igniter device 24A outputs high-voltage electric power for ignition with the timing at which igniter device 24B outputs high-voltage electric power for ignition, and spark discharges at first ignition electrodes P1, P2, P3, second ignition electrodes P4, P5, and third ignition electrode P7, and second ignition electrode P6, tend to be out of sync. Therefore, the following measures have been taken.

[0037] The second ignition electrode P6 to which the first ignition device 26A supplies power for ignition is positioned lower than the first ignition electrodes P1, P2, and P3, lower than the second ignition electrode P4 for igniting the upper burner 54A, and lower than the third ignition electrode P7. More specifically, the second ignition electrode P6 to which power is supplied from the first ignition device 26A is the electrode that is positioned deepest within the housing 2 (the electrode that is deepest in the vertical direction based on the top plate 3 and is the electrode that is farthest from the center C1 (FIG. 1) of the front end of the top plate 3 in the horizontal direction) among all the ignition electrodes P1 to P7 to which the ignition power for ignition is supplied by the igniter devices 26A and 26B. More specifically, the second ignition electrode P6 is disposed closer to the bottom wall 2D than the vertical center of the housing 2 (center of the height of the housing 2) and closer to the rear wall 2C than the front-rear center of the housing 2.

[0038] The housing 2 has a bottom wall 2D and a rear wall 2C that covers the exhaust duct 7 from the rear. A supply path 120, which is a path for supplying fuel gas to the lower burner 54B, is provided in front of the rear wall 2C and behind the lower burner 54B. One igniter device 26A is preferably attached to either a position near the rear end of the bottom wall 2D or the rear wall 2C, with at least a portion of itself being closer to the rear wall 2C than the supply path 120, in the space behind the supply path 120 and in front of the rear wall 2C. For example, one igniter device 26A may be disposed at the positions indicated by dashed lines AR1 to AR3 in FIGS. 5 to 7.

[0039] In this configuration, as shown in FIG. 5 , the top plate 3 is provided with a rear-end opening 3A above the exhaust port 7A near the rear end of the top plate 3 for passing exhaust air discharged from the exhaust port 7A. The afterburner 180 is located rearward of the upper burner 54A and above the lower burner 54B within the grill chamber 5A. The ignition sound generated when the third ignition electrode P7 is ignited is emitted above the top plate 3 through the exhaust port 7A and the rear-end opening 3A. Meanwhile, one igniter device 26A supplies ignition power to the second ignition electrode P6, which is located below the third ignition electrode P7.

[0040] 4.Example of effects When the number of ignition electrodes in the gas stove 1 is increased, the ignition operation can be performed by dividing the operation into at least two igniter devices 26A and 26B. However, when the ignition operation is performed by dividing the operation into two igniter devices 26A and 26B, the timing of the power supply may not be synchronized when the two igniter devices 26A and 26B simultaneously perform the ignition operation, resulting in a mismatch in the ignition timing. Specifically, the ignition timing of the electrode ignited by the power supply from one igniter device 26A may differ from the ignition timing of the electrode ignited by the power supply from the other igniter device 26B. If no measures are taken, this may cause a sense of discomfort to the user. In this regard, in the gas stove 1, one igniter device 26A supplies ignition power to one of the second ignition electrodes P4, P5, and P6 (specifically, second ignition electrode P6). On the other hand, the other igniter device 26B is capable of simultaneously supplying ignition power to the first ignition electrodes P1, P2, P3, the second ignition electrodes P4, P5 other than the second ignition electrode P6 that receives power supply from one igniter device 26A, and the third ignition electrode P7. Due to this configuration, even if there is a slight difference between the ignition timing of one of the second ignition electrodes (specifically, the second ignition electrode P6) performed by one igniter device 26A and the ignition timing of the other ignition electrodes (the first ignition electrodes P1, P2, P3, the second ignition electrodes P4, P5, and the third ignition electrode P7) performed by another igniter device 26B, the ignition sound of the second ignition electrode P6 is easily drowned out by the multiple synchronized ignition sounds generated by the many ignition electrodes (the first ignition electrodes P1, P2, P3, the second ignition electrodes P4, P5, and the third ignition electrode P7), making it less likely that the user will feel uncomfortable.Furthermore, the "second ignition electrode P6 receiving power from one igniter device 26A" is the electrode located at the deepest position within the housing 2 or the electrode located at the farthest position from the center C1 in the left-right direction of the front end of the top plate 3, among all the ignition electrodes receiving power for ignition from one igniter device 26A and the other igniter device 26B. Therefore, the ignition sound of the "second ignition electrode P6 receiving power from one igniter device 26A" is even less likely to reach the user, and the effect of drowning out this ignition sound by the "multiple synchronized ignition sounds" can be further enhanced.

[0041] In a configuration such as gas stove 1, in which upper burner 54A and lower burner 54B are provided as grill burners 54, and afterburner 180 is further provided, and multiple second ignition electrodes P5, P6 are used in lower burner 54B, the number of ignition electrodes tends to be larger, but by providing multiple igniter devices 26A, 26B as in the above configuration, it is easier to accommodate an increase in the number of ignition electrodes.In gas stove 1, the multiple second ignition electrodes P5, P6 for lower burner 54B are intentionally assigned to one igniter device 26A and the other igniter device 26B, which further enhances the effect of eliminating ignition discrepancies. Specifically, instead of allocating one igniter device 26A to each of the multiple second ignition electrodes P5, P6 for igniting the lower burner 54B, one igniter device 26A is allocated to each second ignition electrode P6, thereby further reducing the impact of the ignition noise of this electrode on the user. Furthermore, this electrode is the electrode located deepest within the housing 2 or the electrode located farthest from the center of the front edge of the top panel 3 in the left-right direction, and is located closer to the bottom wall than the center of the housing 2 in the up-down direction and closer to the rear wall than the center of the housing 2 in the front-rear direction, thereby further reducing the impact of the ignition noise of this electrode on the user. Meanwhile, the gas stove 1 assigns another igniter device 26B to the other second ignition electrode P5 for igniting the lower burner 54B, thereby synchronizing the ignition operation with the other ignition electrodes. Therefore, the "synchronized ignition sound" generated by the operation of the other igniter device 26B becomes even louder, further increasing the effect of drowning out the ignition sound generated by the operation of the one igniter device 26A.

[0042] 5 to 7, in gas stove 1, one igniter device 26A can be placed using the space behind supply path 120, which is a path for supplying fuel gas to lower burner 54B, and in front of rear wall 2C. Furthermore, one igniter device 26A is configured adjacent to rear wall 2C and is attached to at least one of a position near the rear end of bottom wall 2D or rear wall 2C, so that when attaching or detaching one igniter device 26A, it is easy to guide the movement along rear wall 2C.

[0043] As shown in Figures 5 to 7, the gas stove 1 has the afterburner 180 located in the grill chamber 5A behind the upper burner 54A and above the lower burner 54B. The ignition sound produced when the third ignition electrode P7 for the afterburner 180 is ignited is emitted above the top plate 3 through the exhaust port 7A and the rear-end opening 3A. This configuration makes the ignition sound produced when the third ignition electrode P7 is ignited easier for the user to hear, and the "synchronized ignition sound" produced by the operation of the other igniter device 2626B becomes even louder, further enhancing the effect of drowning out the "ignition sound based on the operation of one igniter device 26A" produced below the afterburner 180.

[0044] <Other embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, any combination of features of the above-described or following embodiments is possible within a range that does not contradict. Furthermore, any feature of the above-described or following embodiments may be omitted unless explicitly stated as essential. Furthermore, the above-described embodiments may be modified as follows.

[0045] In the above embodiment, there are two igniter devices, but there may be three or more.

[0046] In the above-described embodiment, the number of burners in the stove is three, but the number may be two or less, or four or more.

[0047] In the above embodiment, there are two second ignition electrodes for the lower burner, but there may be one, or three or more.

[0048] It should be noted that the embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is not limited to the embodiments disclosed herein, but is intended to include all modifications within the scope indicated by the claims or the scope equivalent to the claims. [Explanation of symbols]

[0049] 1: Gas stove 2: Housing 3: Top plate 5: Grilling device 5A: Grill compartment 5B: Grill door 7: Exhaust duct 7A: Exhaust port 26A: Igniter device (one igniter device) 26B: Igniter device (other igniter device) 51: Stovetop Burner 52: Stovetop Burner 53: Stovetop Burner 54: Grill burner 54A: Upper burner 54B: Lower burner 180: Afterburner C1: Center P1: 1st ignition electrode P2: 1st ignition electrode P3: 1st ignition electrode P4: 2nd ignition electrode P5: 2nd ignition electrode P6: Second ignition electrode (second ignition electrode that receives power from one igniter device) P7: 3rd ignition electrode

Claims

1. One or more stove burners that emit flames upward; A housing configured to accommodate at least a portion of the stove burner and having an open upper end; a top plate attached to an upper end of the housing and partially closing an opening on the upper end side of the housing; A grill device housed in the housing and having a grill chamber and a plurality of grill burners that heat the inside of the grill chamber; An exhaust duct having an exhaust port and guiding smoke generated in the grill chamber to the exhaust port for exhaust; One or more afterburners that heat at least one of smoke or odor components generated in the grill chamber; a first ignition electrode for igniting the stove burner; a plurality of second ignition electrodes for igniting the grill burner; a third ignition electrode for igniting the afterburner; a plurality of igniter devices for supplying power for ignition; Equipped with One of the plurality of igniter devices supplies ignition power to any one of the plurality of second ignition electrodes, the other igniter devices among the plurality of igniter devices are capable of simultaneously supplying ignition power to the first ignition electrode, the second ignition electrode other than the second ignition electrode supplied with power from the one igniter device, and the third ignition electrode; The second ignition electrode that receives power from the first igniter device is the electrode that is located at the deepest position within the housing when the top plate is used as a reference, or the electrode that is located at the farthest position from the center in the left-right direction of the front end of the top plate, among all the ignition electrodes that receive power for ignition from the first igniter device and the other igniter device. Gas stove.

2. One or more stove burners that emit flames upward; A housing configured to accommodate at least a portion of the stove burner and having an open upper end; a top plate attached to an upper end of the housing and partially closing an opening on the upper end side of the housing; A grill device housed in the housing and having a grill chamber and a plurality of grill burners that heat the inside of the grill chamber; An exhaust duct having an exhaust port and guiding smoke generated in the grill chamber to the exhaust port for exhaust; One or more afterburners that heat at least one of smoke or odor components generated in the grill chamber; a first ignition electrode for igniting the stove burner; a plurality of second ignition electrodes for igniting the grill burner; a third ignition electrode for igniting the afterburner; a plurality of igniter devices for supplying power for ignition; Equipped with The plurality of grill burners include an upper burner and one or more lower burners arranged below the upper burner, One igniter device among the plurality of igniter devices supplies ignition power to any one of the plurality of second ignition electrodes for igniting the lower burner, another igniter device among the plurality of igniter devices is capable of simultaneously supplying ignition power to the first ignition electrode, the second ignition electrode other than the second ignition electrode supplied with power from the one igniter device, and the third ignition electrode; The second ignition electrode to which the one igniter device supplies power for ignition is disposed at a lower position than the first ignition electrode, the second ignition electrode for igniting the upper burner, and the third ignition electrode. Gas stove.

3. The plurality of grill burners include upper burners and lower burners disposed below the upper burners, the afterburner is disposed rearward of the upper burner and above the plurality of lower burners, a plurality of second ignition electrodes for igniting the lower burner are provided; Among the plurality of second ignition electrodes for igniting the lower burner, any one of the second ignition electrodes is an electrode that receives ignition power from one of the igniter devices, is an electrode that is located at the deepest position within the housing or an electrode that is located at the farthest position from the center in the left-right direction of the front end of the top plate, and is located closer to the bottom wall than the center position in the up-down direction of the housing and closer to the rear wall than the center position in the front-rear direction of the housing, and the other second ignition electrodes are electrodes that receive ignition power from the other igniter device.

3. A gas stove according to claim 1 or claim 2.

4. The plurality of grill burners include an upper burner and one or more lower burners arranged below the upper burner, the housing has a bottom wall and a rear wall that covers the exhaust duct from the rear, a supply passage for supplying fuel gas to the lower burner is provided on the front side of the rear wall behind the lower burner, The igniter device is configured so that at least a portion of it is adjacent to the rear wall rather than the supply path in the space rearward of the supply path and forward of the rear wall, and is attached at least either to a position near the rear end of the bottom wall or to the rear wall.

3. A gas stove according to claim 1 or claim 2.

5. The plurality of grill burners include an upper burner and one or more lower burners arranged below the upper burner, a rear end opening is provided on the top plate above the exhaust port at a position near the rear end of the top plate, for passing exhaust gas released from the exhaust port; The afterburner is located rearward of the upper burner and above the lower burner in the grill chamber, an ignition sound generated when the third ignition electrode is ignited is emitted above the top plate through the exhaust port and the rear end opening, The one igniter device supplies ignition power to the second ignition electrode for igniting at least one of the lower burners.

3. A gas stove according to claim 1 or claim 2.

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