JP2018132255A - Heat cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat cooker that can suppress an impact on a grill door due to explosion at re-ignition when an ignition failure occurs in a grill burner.SOLUTION: A heat cooker includes a grill burner 21 disposed downward of a cooking utensil 26 that is stored in a grill compartment 20. When re-ignition operation is conducted by an ignition operation part 23 after an ignition failure occurs in the grill burner 21, an ignition time is shortened more than the previous time and/or a gas supply amount is reduced.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a cooking device. In particular, the present invention relates to a cooking device provided with a grill.

  Conventionally, burners (upper fire burner, lower fire burner) are respectively disposed on the upper wall and the left and right side walls in the grill cabinet, and are placed on cooking tools such as grills and grill plates stored in the grill cabinet. The so-called double-sided heating is configured such that the object to be cooked is heated from below by the combustion exhaust gas emitted from the lower fire burner toward the inside of the grill, and is heated from above by the radiant heat of the upper fire burner. A grill is known (for example, Patent Documents 1 to 3).

Japanese Patent Laying-Open No. 2015-158290 Japanese Patent Laying-Open No. 2015-200460 Japanese Patent Laying-Open No. 2015-223454

  By the way, when cooking a to-be-cooked object using a grill, in order to cook a thick to-be-cooked object or increase the amount of cooking at one time, it is above the cooking utensil on which the object is placed. It is desirable to make the space as large as possible and to make the space below the cooking utensil in which the lower burner is disposed as narrow as possible. Therefore, when cooking with a dish-shaped cooking tool such as a grill plate, if ignition failure occurs in the lower fire burner due to a discharge error, the lower space in the grill is filled with raw gas, and the The gas concentration is difficult to decrease. As a result, there is a risk of explosion if reignition is performed in a state where high-concentration raw gas remains in the lower space. In particular, in order to efficiently heat the upper and lower surfaces of the object to be cooked in the grill chamber in which only the lower fire burner is disposed, a grill burner having a higher combustion capacity than that in the case of using both the upper and lower burners is used and the combustion is performed. It is necessary to improve the sealability of the grill cabinet so that the time from when the exhaust gas is ejected into the grill cabinet until it is discharged outside the grill cabinet is longer. Therefore, not only the amount of gas supplied to the lower flame burner at the time of ignition is increased, but also the concentration of the raw gas injected into the grille at the time of poor ignition is less likely to decrease, and explosion is likely to occur. When explosion occurs in such a grill by reignition, the grill door may be pushed forward by an impact at the time of explosion and the combustion flame may leak from the gap between the grill cabinet and the grill door.

  SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems, and an object of the present invention is to perform an explosion at the time of re-ignition even when ignition failure occurs in a grill burner disposed below a cooking utensil housed in a grill cabinet. It is in providing the heating cooker which can suppress the impact by.

According to a first aspect of the present invention,
With a grill,
A grill burner disposed below the cooking utensil stored in the grill cabinet;
An ignition operation unit for performing an ignition operation of the grill burner;
An ignition electrode for igniting the grill burner;
A flame detector for detecting the combustion flame of the grill burner;
A control unit that performs ignition control of the grill burner,
When an ignition operation is performed in the ignition operation unit, gas is supplied to the grill burner, and spark discharge is generated from the ignition electrode for a predetermined ignition time,
When the combustion flame is not detected within the predetermined ignition time, the gas supply to the grill burner and the spark discharge from the ignition electrode are stopped,
Provided with a cooking device having a configuration in which, after the spark discharge from the ignition electrode is stopped, when the ignition operation unit is re-ignited, the ignition time is shortened and / or the gas supply amount is reduced compared to the previous time. Is done.

  According to the heating cooker, when the combustion flame is not detected by the flame detection unit within a predetermined ignition time and an ignition failure occurs, the gas supply to the grill burner and the spark discharge from the ignition electrode are stopped. Further, after the spark discharge is stopped, if a reignition operation is performed at the ignition operation unit, at least one of shortening the ignition time or reducing the gas supply amount is executed as compared with the previous time, The total amount of gas ejected to the gas is reduced. Thereby, the impact of the explosion at the time of reignition can be reduced.

According to a second aspect of the present invention,
With a grill,
A grill burner disposed below the cooking utensil stored in the grill cabinet;
An ignition operation unit for performing an ignition operation of the grill burner;
An ignition electrode for igniting the grill burner;
A flame detector for detecting the combustion flame of the grill burner;
A control unit that performs ignition control of the grill burner,
When an ignition operation is performed in the ignition operation unit, gas is supplied to the grill burner, and spark discharge is generated from the ignition electrode for a predetermined ignition time,
When the combustion flame is not detected within the predetermined ignition time, the gas supply to the grill burner and the spark discharge from the ignition electrode are stopped,
Provided is a cooking device having a configuration for invalidating a reignition operation even if a reignition operation is performed in an ignition operation unit until a predetermined ignition processing invalidation time elapses after the spark discharge from the ignition electrode is stopped. Is done.

  According to the heating cooker, when the combustion flame is not detected by the flame detection unit within a predetermined ignition time and an ignition failure occurs, the gas supply to the grill burner and the spark discharge from the ignition electrode are stopped. Further, even if a reignition operation is performed in the ignition operation section until the predetermined ignition processing invalidation time has elapsed after the spark discharge is stopped, the reignition operation is invalidated, so that a high concentration in the grill chamber due to poor ignition. Thus, the ignition in the state where the raw gas stays can be prevented, and the raw gas staying in the grill warehouse is purged by the ignition processing invalidation time, so that the concentration of the raw gas can be surely lowered. Thereby, the impact of the explosion at the time of reignition can be reduced.

Preferably, the cooking device according to the second aspect is
When the predetermined ignition processing invalidation time has elapsed since the spark discharge was stopped, the invalidation of the reignition operation is canceled,
After the invalidation of the reignition operation is canceled, when the reignition operation is performed in the ignition operation unit, the ignition time is shortened and / or the gas supply amount is reduced as compared with the previous time.

  According to the heating cooker, the invalidation of the reignition operation is canceled after the ignition processing invalidation time for invalidating the reignition operation for a certain period of time. When a re-ignition operation is performed at the operation unit, at least one of shortening the ignition time or reducing the amount of gas supplied to the grill burner is executed as compared with the previous ignition process, so that the gas is ejected into the grill chamber at the time of re-ignition. The total amount of gas that is produced is reduced. Thereby, the impact of the explosion at the time of reignition can be further reduced.

Preferably, the cooking device according to the first or second aspect is
If the flame detection unit does not detect the combustion flame even if the ignition operation is performed a predetermined number of times, the grill burner is in an ignition prohibited state.

  According to the above cooking device, if the flame detection unit does not detect the combustion flame even if the reignition operation is performed a predetermined number of times, the grill burner is in the ignition prohibited state, so that the gas from the grill burner in a state where ignition failure occurs It is possible to prevent ejection and spark discharge from the ignition electrode.

Preferably, the cooking device according to the first or second aspect is
A storage unit for storing the number of ignition failures;
When the ignition operation is performed, it is determined whether the number of ignition failures is a predetermined number,
When the number of ignition failures is a predetermined number, the grill burner is in an ignition prohibited state without measuring a predetermined ignition time.

  According to the cooking device, since the storage unit stores the number of ignition failures, it is possible to determine the history of ignition failures up to that time when an ignition operation is performed. When the number of ignition failures is a predetermined number, the grill burner is in an ignition prohibited state without timing the predetermined ignition time, so that gas is emitted from the grill burner when ignition failure occurs or from the ignition electrode. It is possible to prevent spark discharge.

Preferably, in the cooking device according to the first or second aspect,
The grill burner is arranged so that the flame hole opens toward the side wall of the grill cabinet,
The bottom wall of the grill cabinet has a ventilation portion that allows the inside of the grill cabinet to communicate with the outside of the grill cabinet.

According to the above cooking device, the bottom wall of the grill cabinet is provided with a ventilation portion that allows the inside of the grill cabinet to communicate with the outside of the grill cabinet. Thus, the secondary air flowing into the grill can be smoothly supplied to the upper grill burner. Thereby, the grill burner arrange | positioned under the cooking utensil can be burned favorably. Further, since the flame hole of the grill burner disposed below the cooking utensil is opened toward the side wall of the grill cabinet, the combustion exhaust of the gas ejected from the flame hole is introduced from the lower side where it flows from the vent. According to the flow of the next air, it can be supplied to the upper region of the grillhouse through the side end of the upper cooking utensil. During combustion of the grill burner, the ventilation section is positioned upstream of the flow path of the secondary air with respect to the flame hole of the grill burner, so that the high-temperature combustion exhaust flows from the ventilation section to the outside of the grill chamber due to the flow of secondary air upward. There is no leakage. Thereby, combustion exhaust can be efficiently convected in the grill.
On the other hand, in the heating cooker, since the grill burner is disposed below the cooking utensil, if an ignition failure occurs, the raw gas stays below the grill cabinet, and explosion is likely to occur during reignition. However, according to the heating cooker, the bottom wall of the grill cabinet is provided with a ventilation portion that allows the inside of the grill cabinet to communicate with the outside of the grill cabinet. The impact generated by wearing can be released below the grill burner and below the outside of the grill box having a low influence on the outside of the appliance from the ventilation portion having low ventilation resistance. Thereby, the impact of the explosion at the time of reignition can be further reduced.

  As described above, according to the present invention, even when ignition failure occurs in the grill burner disposed below the cooking utensil and the reignition operation is performed, the ignition time during reignition is shortened, At least one of reducing the gas supply amount to the grill burner or invalidating the reignition operation within the ignition processing invalidation time is executed, so that the impact due to the explosion of raw gas staying in the grill cabinet at a high concentration is reduced. it can. Thereby, it is possible to prevent the combustion flame due to explosion from leaking out of the appliance through the gap between the grill door and the grill cabinet. Therefore, according to the present invention, it is possible to provide a heating cooker including a grill having high safety.

FIG. 1 is a schematic perspective view showing an example of a heating cooker according to Embodiment 1 of the present invention. FIG. 2 is a schematic vertical sectional view showing a main part of an example of the heating cooker according to Embodiment 1 of the present invention. FIG. 3 is a main part schematic cross-sectional view showing an example of the heating cooker according to Embodiment 1 of the present invention. FIG. 4 is a schematic cross-sectional perspective view of an essential part showing an example of a heating cooker according to Embodiment 1 of the present invention. FIG. 5 is a circuit diagram showing an example of the heating cooker according to Embodiment 1 of the present invention. FIG. 6 is a flowchart showing an example of a control operation of the heating cooker according to the first embodiment of the present invention. FIG. 7 is a flowchart showing an example of a control operation of the heating cooker according to the second embodiment of the present invention. FIG. 8 is a circuit diagram showing an example of a heating cooker according to Embodiment 3 of the present invention. FIG. 9 is a flowchart showing an example of the control operation of the heating cooker according to the third embodiment of the present invention.

(Embodiment 1)
Hereinafter, the cooking device according to the present embodiment will be specifically described with reference to the drawings. FIG. 1 is a schematic perspective view showing an example of a heating cooker of the present embodiment applied to a table stove type gas stove, FIG. 2 is a schematic vertical cross-sectional view of the main part, and FIG. 3 is a schematic horizontal cross-sectional view of the main part. FIG. 4 is a schematic cross-sectional perspective view of the main part in the rear part. In FIG. 4, in order to avoid complication, some components such as cooking utensils are omitted.

  As shown in FIG. 1, the gas stove includes a top body 100, a front plate 101, a rear plate 104, and left and right side plates 105 and includes a stove body 10 that opens downward. A grill 2 is incorporated in the center of the stove body 10 in the center in the left-right direction, and two stove burners 11 are disposed on the top surface of the top plate 100. In addition, the front plate 101 includes a plurality of stove point fire extinguishing operation units 13 for igniting and extinguishing the stove burner 11, a plurality of stove heating control knobs 13a for adjusting the heating power of the stove burner 11, and a grill burner 21 described later. Are provided with a grill point extinguishing operation section 23 for performing ignition and extinguishing, a grill thermal power adjustment knob 23a for adjusting the thermal power of the grill burner 21, and a speaker 80 for performing predetermined notification. In this specification, the depth direction when the stove body 10 is viewed from the front side is referred to as the front-rear direction, the width direction is referred to as the left-right direction, and the height direction is referred to as the up-down direction.

  The grill 2 includes a grill plate 20 on which to-be-cooked objects such as meat and fish are placed, a grill net (not shown), or a grill box 20 that can store cooking utensils such as a heating container (not shown) in which cooking objects are stored, and a grill And a grill door 22 for opening and closing the front opening 200 of the storage 20.

  Although not shown in the figure, inside the stove main body 10, the valve unit for the stove burner 11 that opens and closes in conjunction with the ignition operation and the fire extinguishing operation of the stove point extinguishing operation unit 13, and the ignition operation of the grill point extinguishing operation unit 23. A valve unit for the grill burner 21 that opens and closes in conjunction with a fire extinguishing operation, a gas pipe that guides gas from the gas main pipe to each valve unit, and the like are incorporated.

  Behind the grill cabinet 20 in the stove main body 10 is the combustion exhaust (hereinafter referred to as “hot air”) of gas jetted from the grill burner 21 into the grill cabinet 20, oil smoke generated from the cooking object, odor components, etc. An exhaust cylinder 24 leading to an exhaust port 14 provided in the top plate 100 is provided. More specifically, the exhaust pipe 24 extends from the exhaust pipe inlet 240 provided at the upper end portion of the rear wall 204 of the grill warehouse 20 in a substantially L-shape toward the rear upper side, and the exhaust pipe outlet at the upper end. 241 faces the exhaust port 14 from below (see FIG. 2).

  The grill door 22 has a rear frame 22a that comes into contact with the front frame 203 of the grill cabinet 20 when a front opening 200 of the grill cabinet 20 described later is closed by the grill door 22, and below the rear frame 22a. A support frame 25 that supports the grill door 22 on the stove body 10 is connected to the support frame 25. The support frame 25 extends substantially horizontally from the rear frame 22 a of the grill door 22 along the upper surface of the bottom wall 202 of the grill cabinet 20 toward the rear wall 204, and is provided in the grill cabinet 20. The engaging portion is engaged and supported in a state in which it can slide back and forth (see FIG. 2).

  A substantially flat plate frame portion 251 that is long in the left-right direction is provided on the upper part of the front and rear ends of the support frame 25. On the upper surface of the plate frame portion 251, the grill plate 26 for heating the cooking object placed on the plate upper surface 26A is placed in a removable state. Therefore, the grill plate 26 is drawn forward from the inside of the grill cabinet 20 by opening the grill door 22, and stored inside the grill cabinet 20 by closing the grill door 22. The grill 2 can be used by placing a heating container with a lid (for example, a Dutch oven pan), a heating container without a lid, or a grill net on the support frame 25 in place of the grill plate 26. In the present embodiment, the configuration when the grill plate 26 is installed in the grill cabinet 20 will be mainly described.

  Upwardly protruding upright pieces 250 extending in the left-right direction are formed at the center in the left-right direction of the front and rear plate frame portions 251. On the other hand, a notch 260 having substantially the same left and right width as the standing piece 250 is formed at the center part of the front and rear side edges of the grill plate 26. By inserting the standing piece 250 into the notch 260, the grill plate 26 It is supported on the upper surface of the plate frame 251 in a positioned state. Accordingly, if the grill door 22 is closed in this state, the grill plate 26 is stored in a fixed position in the grill cabinet 20.

  The grill plate 26 is obtained by press-molding a plate material made of an aluminum-based metal into a flat plate shape, and a finish coating such as fluororesin processing is applied to the surface. The grill plate 26 may be formed by casting or forging. In addition, the grill plate 26 is formed of a metal such as iron, copper, or stainless steel as long as it is a material that can conduct an appropriate amount of heat to the food to be cooked placed on the plate upper surface 26A. It may be formed of a ceramic material.

  The left and right side end portions 261 of the grill plate 26 are formed to bend outward and obliquely upward. On the plate upper surface 26A of the grill plate 26, a plurality of upwardly projecting narrow ribs 262 extending in the left-right direction are arranged in parallel in the front-rear direction so as to reduce the contact area with the object to be cooked. ing. Around the portion where the rib 262 is formed, a groove portion 263 is formed for collecting oil or broth exuded from the object to be cooked.

  As shown in FIGS. 2 to 4, the grill cabinet 20 includes a top wall 201, a bottom wall 202, a front frame 203, a rear wall 204, and left and right side walls 205, and a substantially rectangular box that opens forward. Consists of. The grill cabinet 20 is a fastening means (not shown) so that a gap with a predetermined height (for example, 10 to 30 mm) is formed between the bottom wall 202 and the installation section when the gas stove is installed in a predetermined installation section. Thus, it is connected and fixed to the stove body 10. As a result, an air introduction path is formed below the outside of the grill cabinet 20 to allow air outside the grill cabinet 20 to flow into the grill cabinet 20 when the grill burner 21 burns.

  A pair of left and right grill burners 21 are disposed along the side walls 205 in the space between the grill plate 26 and the bottom wall 202 in the grill cabinet 20. The grill burner 21 is a straight tubular burner formed by superimposing two bowls on top and bottom, and extends substantially horizontally from the rear wall 204 of the grill cabinet 20 to the front.

  The flame hole 210 is provided along the outer end surface of the grill burner 21 (see FIGS. 3 and 4), and the gas supplied to the grill burner 21 is left and right outward (side wall 205 side) below the grill plate 26. To be ejected substantially horizontally. An ignition electrode 70 penetrating the rear wall 204 is provided in front of and below the grill plate 26 and behind the grill cabinet 20, and an electrode portion 701 of the ignition electrode 70 is provided behind each grill burner 21. It is arrange | positioned so that the flame hole 210 may be faced. When an ignition operation is performed at the grill point extinguishing operation unit 23, a high voltage is applied from the igniter 92 to the ignition electrode 70 by a control signal from the control unit 90 described later, and a spark discharge is generated from the electrode unit 701 near the flame hole 210. The gas ejected from the flame hole 210 is ignited. Further, a thermocouple (flame detection unit) 71 for detecting a combustion flame is disposed below the grill plate 26 and in front of the grill cabinet 20 so as to face the flame hole 210 in front of each grill burner 21. (See FIG. 2). The output (electromotive voltage) of the thermocouple 71 is input to the control unit 90.

  Further, on the bottom wall 202, a front-side substantially U-shaped burner cover that divides the inside of the grill cabinet 20 into an upper area where the grill plate 26 is disposed and a lower area where the grill burner 21 is disposed. 28 is provided. The burner cover 28 has a substantially rectangular upper plate 61 and left and right side plates 62 extending from the side end of the upper plate 61 toward the bottom wall 202, and is open forward and rearward and downward. The front open part of the burner cover 28 is covered with a cover part 203a that protrudes upward from the central part in the left-right direction of the lower side of the front frame 203, and the rear open part is covered with a rear wall 204. Is covered with a burner cover 28 from above. The grill plate 26 is disposed above the upper plate 61 of the burner cover 28 with a predetermined interval 20B.

  On the side plate 62 of the burner cover 28, a hot air outlet (hot air outlet) 63 is opened to face the flame hole 210 of the grill burner 21. Below the grill plate 26 and outside the side plate 62, a space 20F connected to the upper space 20E is defined, and the hot air blown from the grill burner 21 passes through the hot air outlet port 63 and the burner cover 28. To the side space 20F. Then, the hot air passes along the outside of the side end portion 261 of the grill plate 26 and rises along the side wall 205. As a result, the grill plate 26 is heated from the side end portion 261 side by the passing hot air, and the cooking object on the grill plate 26 is heated from below by the conduction heat from the grill plate 26.

  The bottom wall 202 has a substantially rectangular shape in plan view, and the front frame 203, the rear wall 204, and the side wall 205 are erected from front, rear, left and right ends of the bottom wall 202. As shown in FIGS. 3 and 4, a plurality of ventilation holes (ventilation portions) 208 are formed on substantially the entire surface of the bottom wall 202 in the left-right direction from the flame hole 210 of the grill burner 21. The lower part in 20 communicates with the outside of the grill cabinet 20 through a vent hole 208. Therefore, when the grill burner 21 is combusted, air outside the grill cabinet 20 flows into the grill cabinet 20 through the vent hole 208 by the draft effect, and is supplied to the flame hole 210 of the grill burner 21 as secondary air. The secondary air supplied to the flame hole 210 of the grill burner 21 is supplied as hot air to the upper space 20E through the hot air outlet 63.

  The upper wall 201 has a two-layer structure including a lower first upper wall 201a facing the cooking utensil 26 and a second upper wall 201b disposed so as to cover the first upper wall 201a from above. Both ends of the first upper wall 201a are supported and fixed to the left and right side walls 205 of the grill cabinet 20, and an exhaust pipe is provided between the first upper wall 201a and the second upper wall 201b through an exhaust pipe inlet 240. An exhaust passage 20 </ b> C connected to 24 is formed.

  The first upper wall 201a has a downwardly convex substantially inverted trapezoidal bulged portion 51 disposed at the center in the left-right direction of the grill cabinet 20, and from both side walls 205 to the outer edge of the bulged portion 51. And an inclined portion 52 extending obliquely upward. Both the bulging portion 51 and the inclined portion 52 are formed from the front end portion to the rear end portion of the first upper wall 201a. Accordingly, the hot air rising along the side wall 205 in the grill cabinet 20 is guided to the periphery of the bulging portion 51 along the lower surface of the inclined portion 52, and further downward along the lower surface of the bulging portion 51, that is, It is guided to the plate upper surface 26A side. Thereby, the to-be-cooked object on the grill plate 26 is heated from above by hot air (convection heat) that flows from the outside to the center downward in the grill cabinet 20.

  The rear end portion of the first upper wall 201a is in contact with the lower edge portion of the exhaust pipe inlet 240 in the rear wall 204, and separates the space 20E above the grill plate 26 and the exhaust pipe inlet 240. . A plurality of hot air outlets (hot air discharges) that connect the upper space 20E and the exhaust passage 20C to the positions closer to the front and rear than the center in the front-rear direction of the bulging portion 51 and the inclined portion 52, respectively. Department) 53 is established.

  The rear wall 204 above the burner cover 28 is closed so that hot air that convects the upper space 20 </ b> E does not flow directly from the rear of the grill cabinet 20 to the exhaust pipe inlet 240. That is, the rear wall 204 forming the upper region in the grill cabinet 20 is not provided with an opening through which air can flow from the outside of the grill cabinet 20, and the upper space 20E extends from the hot air outlet 53 to the exhaust passage 20C. To the exhaust pipe inlet 240.

  According to the configuration of the grill warehouse 20, the hot air blown from the grill burner 21 below the grill plate 26 and guided to the upper space 20 </ b> E and the oily smoke and odor components generated from the cooking object on the grill plate 26 are heated. The exhaust gas is led to the exhaust passage 20C through the exhaust port 53, further led to the exhaust tube inlet 240 through the exhaust passage 20C, and discharged from the exhaust tube 24 to the outside of the stove body 10 through the exhaust tube outlet 241. Further, the heat in the hot air led out to the exhaust passage 20C through the hot air discharge port 53 provided at the front side of the first upper wall 201a is collected by the first upper wall 201a while the hot air flows through the exhaust passage 20C. Then, it is radiated toward the upper surface side of the grill plate 26. Thus, if the first upper wall 201a is formed from a metal plate having excellent heat transfer properties, the first upper wall 201a forming the lower surface of the exhaust passage 20C also functions as a heat collecting plate, and the food to be cooked on the grill plate 26 Is also heated from above by radiant heat from the first upper wall 201a.

  A concave surface portion 30 that is recessed outward is formed at a substantially central position in the vertical direction on the inner surface of each side wall 205, that is, at a position facing the side end portion 261 of the grill plate 26. The concave surface portion 30 extends in the front-rear direction of the grill cabinet 20 along the inner surface of the side wall 205, and the side end portion 261 of the grill plate 26 in a state where the grill plate 26 is stored at a fixed position of the grill cabinet 20. A gap having a substantially constant width (for example, 20 mm) is defined on the outer side of the front and rear sides. Accordingly, the hot air blown from the grill burner 21 to the space 20F on the side of the burner cover 28 is guided to the upper space 20E through the gap.

  The central portion 31 of the concave surface portion 30 is formed in a planar shape extending in the vertical direction and the front-rear direction. Further, the peripheral edge of the concave surface portion 30 is formed as an inclined surface so that the central portion 31 is located on the outermost side. Therefore, the hot air blown from the grill burner 21 to the space 20F on the side of the burner cover 28 is guided to the gap between the grill plate 26 and the concave surface portion 30 along the inclined surface below the peripheral edge of the concave surface portion 30, and It is guided along the inclined surface to the lower surface side of the inclined portion 52 of the first upper wall 201a. Thereby, hot air can be convected in the grill warehouse 20 more efficiently.

  A substantially flat heat shield wall 29 is provided outside the side wall 205 of the grill cabinet 20 so as to cover at least the formation portion of the concave surface portion 30 from the outside. That is, the side surface portion of the grill cabinet 20 has a double structure including the side wall 205 of the grill cabinet 20 and the heat shield wall 29. An upper end portion of the heat shield wall 29 is supported and fixed to an upper end portion of the side wall 205, and an air layer is defined between the heat shield wall 29 and the side wall 205. Thereby, it can prevent that the heat of the side wall 205 is directly transmitted to the electrical wiring and components incorporated in the stove main body 10.

  FIG. 5 is a circuit diagram of the gas stove according to the present embodiment. Although the control unit 90 also controls the combustion of the stove burner 11, only the grill burner 21 will be described below in order to avoid complication.

  As shown in FIG. 5, a grill gas pipe 500 that guides the gas supplied from the gas main pipe to the grill burner 21 is connected to the inside of the stove body 10. In the gas pipe 500, the opening of the gas flow path is changed by manually operating the main electromagnetic valve 93 capable of shutting off the gas supply to the grill burner 21 and the grill heating power adjustment knob 23a in order from the upstream side. A flow rate adjusting mechanism 94 for adjusting the thermal power is provided.

  Although not shown, the grill point extinguishing operation unit 23 includes a conventionally known cam mechanism, and the main electromagnetic valve 93 is energized by a spring when an ignition operation is performed to push the grill point extinguishing operation unit 23 to the final position. It is mechanically opened against this. When ignition is detected by the output of the thermocouple 71, the main electromagnetic valve 93 is energized, the valve open state is maintained, and the grill point extinguishing operation is canceled even if the ignition operation of the grill point extinguishing operation unit 23 is canceled. The part 23 is locked at an intermediate position. Further, when a fire extinguishing operation for pushing the grill point fire extinguishing operation unit 23 is performed, the engagement at the intermediate position of the grill point extinguishing operation unit 23 is released, and the main electromagnetic valve 93 is closed by the biasing force of the spring. . The flow rate adjusting mechanism 94 is provided with a conventionally known operating mechanism that moves the grill heating power adjustment knob 23a to an ignition position where a predetermined ignition heating power is obtained in conjunction with the ignition operation in the grill point fire extinguishing operation unit 23. ing.

  The gas stove includes a control unit 90 that operates by power supply from a power source 75 such as a battery and controls the operation of the entire gas stove. The control unit 90 is connected to the grill point extinguishing operation unit 23, the thermocouple 71, the igniter 92, the main electromagnetic valve 93, the speaker 80, and the like through electric wiring. The control unit 90 includes a microcomputer 91 and a nonvolatile memory 910 such as an EEPROM that can be rewritten by the microcomputer 91. Although not shown, the control unit 90 includes a control circuit constituted by a microcomputer 91, an igniter drive circuit that drives the igniter 92, a main solenoid valve drive circuit that controls opening and closing of the main solenoid valve 93, and an output of the thermocouple 71. A combustion state detection circuit for detecting the combustion state of the grill burner 21 based on the above, a timer circuit which is a time measuring means for measuring the driving time of the igniter 92, a notification control circuit for controlling sound notification from the speaker 80, and a grill point extinguishing operation In the closed state of the microswitch that is closed by the ignition operation of the unit 23, the power supply circuit that supplies power to the microcomputer 91 and each circuit from the power supply 75, and the open state of the microswitch is set to Hi by the point fire extinguishing operation of the grill point fire extinguishing operation unit 23 A circuit configuration such as a switch circuit that converts to Lo level and outputs to the microcomputer 91 Eteiru. The control circuit is supplied with power from the power source 75 through the power source circuit, and based on input signals from the grill fire extinguishing operation unit 23 and the thermocouple 71, the igniter drive circuit, the main solenoid valve drive circuit, and the combustion state detection circuit Then, the operation of the gas stove is controlled such that the operation shown in FIG. 6 is performed by controlling the timer circuit, the notification control circuit, and the power supply circuit.

Next, with reference to FIG. 6, the control operation in the case of cooking using the gas stove according to the present embodiment will be described.
When an ignition operation is performed in which the user pushes the grill fire extinguishing operation unit 23, power is supplied from the power source 75 to the microcomputer 91 and the microcomputer 91 is activated. Further, the main electromagnetic valve 93 is opened, and the grill heating power adjustment knob 23a is set at a predetermined ignition position. As a result, gas is supplied to the grill burner 21 at a gas supply amount that provides a predetermined ignition heating power (for example, a medium fire of about 1300 kcal / hr) (steps ST1 to ST2).

  Further, the microcomputer 91 reads the ignition failure count N stored in the nonvolatile memory 910, and starts counting a predetermined initial ignition time (for example, 10 seconds) if the ignition failure count N is “0”. Then, a spark discharge is generated from the ignition electrode 70 by energizing the igniter 92 (steps ST3 to ST6).

  If the output of the thermocouple 71 becomes equal to or higher than the predetermined ignition detection level within the predetermined initial ignition time (No in step ST7, Yes in step ST8), the microcomputer 91 stops energization to the igniter 92 and The solenoid valve 93 is energized, and the main solenoid valve 93 is held open (step ST9). Thereby, normal combustion is started. After the combustion of the grill burner 21 is started, the microcomputer 91 energizes the main solenoid valve 93 when the output of the thermocouple 71 becomes less than the misfire detection level without performing the fire extinguishing operation at the grill fire extinguishing operation unit 23. Then, the main electromagnetic valve 93 is closed (steps ST10 to ST11).

  On the other hand, when the output of the thermocouple 71 does not exceed the ignition detection level within the predetermined initial ignition time (Yes in step ST7), the microcomputer 91 stops energization to the igniter 92 and the grill point extinguishing operation unit. When the ignition operation is released at 23, the main electromagnetic valve 93 is closed (step ST12). Then, the microcomputer 91 adds “1” to the number of ignition failures N in the nonvolatile memory 910 (step ST13).

  When the reignition operation is performed at the grill point fire extinguishing operation unit 23, the main electromagnetic valve 93 is opened (steps ST1 and ST2) in the same manner as described above, and the ignition failure frequency N is not “0” but the predetermined frequency Nc ( For example, if not three times (No in steps ST4 and ST14), the microcomputer 91 starts measuring a predetermined reignition time (for example, 7 seconds) shorter than the initial ignition time (step ST15). Next, as in the first ignition, energization to the igniter 92 is started, and it is determined whether or not the output of the thermocouple 71 becomes equal to or higher than the ignition detection level within the shortened reignition time (steps ST16 to ST18). . Thereby, compared with the time when the first ignition operation is performed, the total amount of gas ejected from the grill burner 21 within the ignition time when the reignition operation is performed is reduced.

  If the output of the thermocouple 71 becomes equal to or higher than the ignition detection level within a predetermined reignition time (Yes in step 18), it can be determined that the ignition error is such that reignition is possible. “0” is written in N (step ST19), and similarly, spark discharge from the ignition electrode 70 is stopped, heating by the grill burner 21 is started, and misfire of the grill burner 21 is monitored by the thermocouple 71 (step ST19). ST9 to ST10).

  On the other hand, if the output of the thermocouple 71 does not exceed the ignition detection level within the predetermined reignition time (Yes in step ST17), the energization of the igniter 92 is stopped and the main solenoid valve 93 is turned off as described above. The valve is closed and the ignition failure count N is added (steps ST12 to ST13). When the ignition failure frequency N reaches the predetermined frequency Nc (Yes in step ST14), the appliance is interlocked to make the ignition prohibited state in order to prohibit the ignition operation (step ST20). As a result, the user can recognize that the grill 2 has failed.

  According to the gas stove of the above-described embodiment, when the combustion flame is not detected by the thermocouple 71 within a predetermined ignition time and ignition failure occurs, the reignition operation is performed at the grill point extinguishing operation unit 23 for the first time. Therefore, the total amount of gas ejected from the grill burner 21 by the end of the reignition process is smaller than that of the initial ignition process. Therefore, even if the gas is ignited immediately before the end of the reignition process, the impact of the explosion can be reduced.

  Further, according to the gas stove of the above embodiment, when the grill burner 21 is not ignited even if the ignition operation is performed a predetermined number of times, the grill burner 21 is in an ignition prohibited state, and therefore, when re-ignition occurs when an abnormality occurs. It is possible to prevent the raw gas from being discharged into the grill cabinet 20 and the spark discharge from the ignition electrode 70. As a result, the raw gas is not excessively ejected into the grill cabinet 20, and the raw gas can be prevented from staying in the grill cabinet 20 at a high concentration, and the high concentration raw gas can be prevented from exploding. The number of ignition failures is stored in the nonvolatile memory 910, and the number of ignition failures is determined every time the ignition operation is started. Therefore, even when the ignition prohibition control is not executed, the ignition operation is performed. The spark discharge from the ignition electrode 70 can be prevented in advance.

  Further, according to the gas stove of the above-described embodiment, the bottom wall 202 below the flame hole 210 of the grill burner 21 and inside the flame hole 210 is connected to the inside of the grill cabinet 20 and the outside of the grill cabinet 20. Since the vent hole 208 for communication is provided, even if an explosion occurs at the time of re-ignition, the impact caused by the explosion is reduced below the grill 20 and near the grill burner 21. It is possible to escape from the low vent hole 208 to the lower side outside the grill cabinet 20 with little influence on the outside of the appliance. That is, when explosion occurs, the combustion flame can be guided in the downward direction opposite to the flow path of the secondary air during combustion. In particular, since the gas stove improves the hermeticity of the grill cabinet 20 in order to efficiently heat the food to be cooked, the impact at the time of explosion is directed toward the vent hole 208 rather than toward the upper space 20E. It becomes easy. Further, according to the gas stove, the vent hole 208 is provided on the inner side of the flame hole 210. Therefore, even when a device such as a valve unit is provided on the side of the grill cabinet 20, the influence of the combustion flame is exerted. Can be prevented. Thereby, even when explosion occurs at the time of reignition, the impact on the grill door 22 is reduced, and leakage of the combustion flame from the gap between the grill cabinet 20 and the grill door 22 can be reliably prevented. Therefore, according to the said gas stove, the gas stove provided with the grill which is excellent in heating performance and has high safety can be provided.

(Embodiment 2)
The gas stove according to the present embodiment has the same configuration as that of the gas stove according to the first embodiment except that the gas supply amount to the grill burner when the ignition failure occurs and the reignition operation is performed is reduced as compared with the first ignition. It is. For this reason, about the same part as Embodiment 1, description is abbreviate | omitted using the same reference number, and only a different part is demonstrated.

  FIG. 7 is a circuit diagram of the gas stove according to the present embodiment. Unlike the first embodiment, the gas stove of the present embodiment is a thermal power in which the opening degree is changed by moving the valve element by the stepping motor 98 in accordance with a control signal from the microcomputer 91a in order to change the thermal power of the grill burner 21. An adjustment valve 99 is provided, and a grill fire power adjustment knob 23a is connected to the control unit 90a. The control unit 90 a includes a motor drive circuit that drives the stepping motor 98 and is always supplied with power from the power source 75.

  FIG. 8 is a flowchart showing a control operation when cooking with the gas stove of the present embodiment. As in the first embodiment, when an ignition operation is performed in which the user presses the grill fire extinguishing operation unit 23, the main electromagnetic valve 93 is opened, the number N of ignition failures is read, and the first ignition is performed. For example, timing of a predetermined ignition time (for example, 10 seconds) is started (steps ST41 to ST45). The microcomputer 91a generates a spark discharge from the ignition electrode 70 by energizing the igniter 92 and drives the stepping motor 98 to set the opening of the thermal power adjustment valve 99 to a predetermined initial ignition thermal power (for example, 1300 kcal / The gas supply amount is adjusted so as to obtain a medium heat of about hr) (step ST46).

  When the output of the thermocouple 71 becomes equal to or higher than the predetermined ignition detection level within the predetermined ignition time, the microcomputer 91a stops the spark discharge from the ignition electrode 70 and the main electromagnetic valve 93 as in the first embodiment. Is opened, heating by the grill burner 21 is started, and misfire of the grill burner 21 is monitored by the thermocouple 71 (steps ST47 to ST50). When the output of the thermocouple 71 becomes less than the misfire detection level, the microcomputer 91a energizes the main solenoid valve 93 to close the main solenoid valve 93 and notifies the misfire error notification (for example, “ The fire is extinguished. Please re-ignite ") (step ST51 to ST52). Thereby, a user can be made to recognize misfire after ignition of the grill burner 21. FIG.

  On the other hand, when the output of the thermocouple 71 is less than the ignition detection level within the predetermined ignition time and the combustion flame is not detected and an ignition failure has occurred (Yes in step ST47), the microcomputer 91a sends the igniter 92 to the igniter 92. While energizing is stopped, an ignition error (for example, “it is an ignition error”) is notified from the speaker 80, and “1” is added to the number N of ignition failures in the nonvolatile memory 910 (steps ST53 to ST55).

  When the reignition operation is performed at the grill point fire extinguishing operation unit 23, the main electromagnetic valve 93 is opened (steps ST41 to ST42) in the same manner as described above, and the ignition failure frequency N is not “0” but the predetermined frequency Nc ( For example, if it is not three times (No in steps ST44 and ST56), the microcomputer 91 starts measuring the same ignition time as the initial ignition time (step ST57). Further, the microcomputer 91 generates a spark discharge from the ignition electrode 70 and drives the stepping motor 98 so that the opening degree of the thermal power control valve 99 is a predetermined reignition thermal power lower than the initial ignition thermal power (for example, 700 kcal / hr). It adjusts so that it may become the gas supply amount which can obtain a low heat of a grade (step ST58). Thereby, compared with the time when the first ignition operation is performed, the total amount of gas ejected from the grill burner 21 within the ignition time when the reignition operation is performed is reduced.

  Subsequent control operations are the same as in the first embodiment, and when the ignition failure occurs a plurality of times and the number of ignition failures N reaches the predetermined number Nc (Yes in step ST56), the grill burner 21 is set in the ignition prohibited state, The speaker 80 is notified of prohibition of ignition processing (eg, “ignition prohibited”) (steps ST62 to ST63). Thereby, a user can be made to recognize that the gas stove became incomplete.

  According to the gas stove of the above embodiment, when a combustion flame is not detected by the thermocouple 71 within a predetermined ignition time and an ignition failure occurs, gas supply to the grill burner 21 and spark discharge from the ignition electrode 70 are performed. If the reignition operation is performed by the grill point extinguishing operation unit 23 after stopping the spark discharge and further stopping the spark discharge, the amount of gas supplied to the grill burner 21 is reduced from the first time, so that the reignition process is completed. The total gas amount ejected from the grill burner 21 is smaller than that in the first ignition process. Therefore, even if the gas is ignited immediately before the end of the reignition process, the impact of the explosion can be reduced. Further, since the amount of gas supplied to the grill burner 21 is reduced, the amount of gas ejected from the grill burner 21 per unit time is reduced. Therefore, the impact when the gas is ignited before the ignition time elapses is also reduced. Thereby, the impact of the explosion at the time of reignition can be reduced.

  Also in the present embodiment, similarly to the first embodiment, when the grill burner 21 is not ignited even if the ignition operation is performed a predetermined number of times, the grill burner 21 is set in the ignition prohibited state, and thus an abnormality has occurred. It is possible to prevent the raw gas from being ejected into the grill cabinet 20 and the spark discharge from the ignition electrode 70 at the time of re-ignition. Furthermore, since the number of ignition failures is stored in the nonvolatile memory 910, spark discharge from the ignition electrode 70 when an ignition operation is performed can be prevented. Even when explosion occurs, an impact can be released to the vent hole 208 formed below the grill cabinet 20. Thereby, safety can be further improved.

(Embodiment 3)
In the gas stove according to the present embodiment, when an ignition failure occurs, the reignition operation is invalidated even if an ignition operation is performed at the grill point extinguishing operation unit 23 until a predetermined ignition process invalidation time elapses. The configuration is the same as that of the gas stove of the second embodiment. For this reason, about the same part as Embodiment 2, description is abbreviate | omitted using the same reference number, and only a different part is demonstrated.

FIG. 9 is a flowchart showing a control operation in the case where cooking is performed using the gas stove according to the present embodiment.
When an ignition operation in which the user pushes the grill point fire extinguishing operation unit 23 is performed, the main electromagnetic valve 93 is opened, the number N of ignition failures is read, and the number N of ignition failures is a predetermined number Nc (for example, 3 If not, a predetermined ignition time (for example, 10 seconds) is started (steps ST81 to ST85). The microcomputer 91a generates a spark discharge from the ignition electrode 70 by energizing the igniter 92 and drives the stepping motor 98 to set the opening of the thermal power adjustment valve 99 to a predetermined ignition thermal power (for example, 1300 kcal / hr). The gas supply amount is adjusted so as to obtain a medium heat) (step ST86).

  When the output of the thermocouple 71 becomes equal to or higher than the predetermined ignition detection level within the predetermined ignition time, the microcomputer 91a writes “0” to the number of ignition failures N in the nonvolatile memory 910, and as in the second embodiment, The spark discharge from the ignition electrode 70 is stopped, the main electromagnetic valve 93 is held open, heating by the grill burner 21 is started, and misfire of the grill burner 21 is monitored by the thermocouple 71 (steps ST87 to ST91). When the output of the thermocouple 71 becomes less than the misfire detection level, the microcomputer 91a energizes the main solenoid valve 93 to close the main solenoid valve 93 and notifies the misfire error notification from the speaker 80 for a certain period of time ( Steps ST92 to ST93). Thereby, a user can be made to recognize misfire after ignition of the grill burner 21. FIG.

  On the other hand, when the output of the thermocouple 71 is less than the ignition detection level within the predetermined ignition time and the combustion flame is not detected and an ignition failure has occurred (Yes in step ST87), the microcomputer 91a sends the igniter 92 to the igniter 92. The energization is stopped and the stepping motor 98 is driven to close the heating power adjustment valve 99. Further, the microcomputer 91a notifies the ignition error from the speaker 80, and adds “1” to the number of ignition failures N in the nonvolatile memory 910 (steps ST94 to ST96). Further, the microcomputer 91a has a predetermined ignition processing invalidation time (for example, sufficient for the concentration of the raw gas to be such that the raw gas ejected into the grill 20 due to poor ignition is purged and no explosion occurs) Time counting for 5 seconds is started (step ST97). Even if the reignition operation is performed by the grill point extinguishing operation unit 23 until the predetermined ignition processing invalidation time elapses, the microcomputer 91a installs the motor drive circuit and the igniter 92 for changing the opening degree of the thermal power adjustment valve 99. Energizing the igniter drive circuit to be activated is prohibited, and the reignition operation is invalidated. Further, if the reignition operation is performed within a predetermined ignition processing invalidation time, the invalidation notification of the reignition operation (for example, “it cannot be ignited. . This allows the user to recognize the ignition standby state for a certain time. In order to invalidate the reignition operation, a predetermined lock mechanism may be provided so that the grill point fire extinguishing operation unit 23 cannot be pushed.

  When the predetermined ignition process invalidation time elapses, the invalidation is canceled (step ST101), and when the reignition operation is performed at the grill fire extinguishing operation unit 23 (step ST81), the number of times of poor ignition N is not the predetermined number Nc. The same ignition process as the first ignition process is performed. Further, when the number of ignition failures N reaches the predetermined number Nc (Yes in step ST84), the grill burner 21 is set in the ignition prohibited state and the ignition processing prohibition notification is notified from the speaker 80 as in the second embodiment (step ST102). ~ ST103).

  According to the gas stove of the above embodiment, when a combustion flame is not detected by the thermocouple 71 within a predetermined ignition time and an ignition failure occurs, gas supply to the grill burner 21 and spark discharge from the ignition electrode 70 are performed. Even if a reignition operation is performed at the grill point extinguishing operation unit 23 until a predetermined ignition processing invalidation time has elapsed after the spark discharge is further stopped, the reignition operation is invalidated. It is possible to prevent ignition in a state where the raw gas stays at a high concentration in the grill cabinet 20 due to a defect, and the raw gas staying in the grill cabinet 20 is purged by the ignition processing invalidation time to ensure the concentration of the raw gas. Can be reduced. Thereby, the impact of the explosion at the time of reignition can be reduced.

  Also in this embodiment, since the ignition prohibition control when the grill burner 21 does not ignite even after the ignition operation is performed a predetermined number of times and the number of ignition failures stored in the nonvolatile memory 910 are executed, the reignition operation is performed. It is possible to prevent the raw gas from being ejected into the grill cabinet 20 and the spark discharge from the ignition electrode 70 when the operation is performed. Even when explosion occurs, an impact can be released to the vent hole 208 formed below the grill cabinet 20. Thereby, safety can be further improved.

(Other embodiments)
(1) In the first and second embodiments, when ignition failure occurs, the ignition time is shortened and the gas supply amount is reduced. However, these may be used together.
(2) In the first and second embodiments, when an ignition failure occurs, the ignition time or the gas supply amount from the second time to the predetermined number of times that ignition is prohibited is set to be the same. Each time it increases, the ignition time may be shortened or the gas supply amount may be reduced, or from the first time to a certain number of ignitions, the same ignition time or gas supply amount may be used, and when the number of ignitions exceeds a certain number, The time may be shortened or the gas supply amount may be reduced. That is, when the ignition operation is performed a plurality of times, the ignition time may be shortened and / or the gas supply amount may be reduced so that the total gas amount is reduced as compared with the previous time by any reignition. .
(3) In both Embodiments 2 and 3, a speaker is used as the notification unit. However, a display lamp for displaying an error may be used, or a speaker and a display lamp may be used in combination.
(4) In Embodiment 3 above, the ignition time and gas supply amount at the time of reignition are the same as those at the time of initial ignition, but as in Embodiments 1 and 2, the ignition time can be shortened at the time of reignition, The gas supply amount may be reduced.

20 Grill compartment 21 Grill burner 23 Grill point extinguishing operation part (ignition operation part)
26 Grill plate (cooking utensil)
208 Vent (vent)
70 Ignition electrode 71 Thermocouple (flame detector)
80 Speaker (notification unit)
90, 90a Control unit (control unit)

Claims (6)

With a grill,
A grill burner disposed below the cooking utensil stored in the grill cabinet;
An ignition operation unit for performing an ignition operation of the grill burner;
An ignition electrode for igniting the grill burner;
A flame detector for detecting the combustion flame of the grill burner;
A control unit that performs ignition control of the grill burner,
When an ignition operation is performed in the ignition operation unit, gas is supplied to the grill burner, and spark discharge is generated from the ignition electrode for a predetermined ignition time,
When the combustion flame is not detected within the predetermined ignition time, the gas supply to the grill burner and the spark discharge from the ignition electrode are stopped,
A cooking device having a configuration in which, after a spark discharge from an ignition electrode is stopped, when a reignition operation is performed in an ignition operation unit, an ignition time is shortened and / or a gas supply amount is reduced as compared with the previous time. With a grill,
A grill burner disposed below the cooking utensil stored in the grill cabinet;
An ignition operation unit for performing an ignition operation of the grill burner;
An ignition electrode for igniting the grill burner;
A flame detector for detecting the combustion flame of the grill burner;
A control unit that performs ignition control of the grill burner,
When an ignition operation is performed in the ignition operation unit, gas is supplied to the grill burner, and spark discharge is generated from the ignition electrode for a predetermined ignition time,
When the combustion flame is not detected within the predetermined ignition time, the gas supply to the grill burner and the spark discharge from the ignition electrode are stopped,
A cooking device having a configuration in which a reignition operation is invalidated even if a reignition operation is performed in an ignition operation unit until a predetermined ignition process invalidation time elapses after the spark discharge from the ignition electrode is stopped. The cooking device according to claim 2,
When the predetermined ignition processing invalidation time has elapsed since the spark discharge was stopped, the invalidation of the reignition operation is canceled,
A heating cooker having a configuration in which, after canceling the invalidation of the reignition operation, when the reignition operation is performed in the ignition operation unit, the ignition time is shortened and / or the gas supply amount is reduced as compared with the previous time. In the heating cooker according to any one of claims 1 to 3,
A heating cooker having a configuration in which a grill burner is in an ignition-prohibited state when a combustion flame is not detected by a flame detection unit even after a predetermined number of ignition operations. The cooking device according to any one of claims 1 to 4,
A storage unit for storing the number of ignition failures;
When the ignition operation is performed, it is determined whether the number of ignition failures is a predetermined number,
A cooking device having a configuration in which the grill burner is in an ignition prohibited state without counting a predetermined ignition time when the number of ignition failures is a predetermined number. In the cooking-by-heating machine of any one of Claims 1-5,
The grill burner is arranged so that the flame hole opens toward the side wall of the grill cabinet,
The bottom wall of the grill cabinet is a heating cooker having a ventilation section that allows the inside of the grill cabinet to communicate with the outside of the grill cabinet.

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