JP2015200460A - Grill plate and grill device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grill plate and a grill device, in which venting of combustion exhaust gas in the vicinity of a lower flame burner is smoothly performed when used with the grill plate mounted on the position of a grill net, and which can maintain good flame detection performance, good ignition performance, and good combustion performance in the lower flame burner.SOLUTION: A grill plate 20 is used by being accommodated in a heating chamber 2 of a grill device 10 with an object to be cooked placed thereon. The grill device 10 is provided with an eaves plate member 555a extending obliquely downward to cover the upper side of a lower flame burner 55. When the grill plate 20 is in a heating chamber accommodated state in which the grill plate 20 is accommodated in the heating chamber 2 in a direction in which a flange part thereof is disposed on the left and right side walls of the heating chamber 2, a flange part 211 extends obliquely upward from the periphery of a main body part 201 so that the flange part 211 is disposed above the eaves plate member 555a inside the heating chamber 2, and an exhaust path 7 through which the combustion exhaust gas from the lower flame burner 55 passes from downward to upward is formed between the flange part 211 and the eaves plate member 555.

Description

  The present invention relates to a grill plate and a grill device used for heating and cooking an object to be cooked in a heating chamber of the grill device.

  2. Description of the Related Art Conventionally, it is known that a small baking dish is placed on a grill net provided in a grill box of a grill device so that it can be pulled out together with a water tray, and the food to be cooked is placed on the baking dish. (Patent Document 1).

Japanese Patent Laid-Open No. 10-75898

  By the way, in the grill device, a shallow plate-like grill plate having a size almost the same as that of a grill net is mounted at the position of the grill net instead of the grill net, and an object to be cooked is placed on the grill plate for cooking. It is possible. However, in such a grill plate, the combustion exhaust cannot pass like a grill, and the gap between the left and right ends of the grill plate and the left and right side walls in which the lower fire burner in the grill is disposed is narrowed. Therefore, the exhaust of the combustion exhaust from the lower part generated in the lower fire burner is hindered. Therefore, when the burner is ignited, secondary air is not supplied smoothly to the flame outlet of the lower flame burner, and the rise in flame temperature becomes dull due to lack of oxygen, and ignition detection by a flame detector such as a thermocouple is performed well. There is a risk of an ignition error. Further, at the time of re-ignition after the burner is extinguished, there is a possibility that the combustion exhaust remains in the vicinity of the flame port where the ignition electrode in the lower-fired burner is disposed, resulting in poor ignition. Further, during combustion of the lower fire burner, the combustion exhaust may accumulate in the vicinity of the lower fire burner, and secondary air may not be smoothly supplied to the flame outlet of the lower fire burner, which may reduce the combustion performance of the lower fire burner. is there. In this case, there is a possibility that the detector misdetects that the lower burner has misfired.

  The present invention has been made in view of the above circumstances, and when the grill plate is mounted and used at the position of the grill net, the exhaust of the combustion exhaust near the lower fire burner is smoothly performed. An object of the present invention is to provide a grill plate and a grill device capable of maintaining good flame detection performance, ignition performance, and combustion performance.

The grill plate according to the present invention is
At least a lower fire burner that extends in the front-rear direction is provided on each of the left and right side walls of the heating chamber, and from the side wall toward the center side in the left-right direction of the heating chamber so as to cover the upper side of the lower fire burner In the grill device provided with a plate member that extends obliquely downward, a grill plate that is used by placing an object to be cooked and housed in the heating chamber,
It has a shallow dish-shaped main body, and left and right flanges extending outward from the left and right peripheral edges of the main body,
When the grill plate is housed in the heating chamber in a direction in which the flange portion is disposed on the left and right side walls in the heating chamber, the flange portion is disposed above the plate member in the heating chamber. The flange portion is formed from the peripheral edge of the main body portion so that an exhaust passage for passing the combustion exhaust from the lower fire burner from below to above is formed between the flange portion and the saddle plate member. It extends obliquely upward.

  From the above configuration, the flange portion of the grill plate and the saddle plate member in the heating chamber are opposed to each other as an inclined surface in the same direction, and faced obliquely upward between the flange portion and the saddle plate member. An exhaust passage is formed above the lower fire burner. Thus, the combustion exhaust generated in the lower lower burner passes smoothly through the exhaust passage and flows out above the grill plate. Accordingly, the combustion exhaust is smoothly discharged without accumulating in the vicinity of the flame outlet of the lower flame burner, so that secondary air is smoothly introduced into the flame outlet of the lower flame burner. Therefore, even if the size of the grill plate is almost the same size as that of the grill, the lower flame burner forms a good flame during ignition and reliably detects ignition, and reignition also burns. It is performed without being obstructed by the exhaust gas, and the secondary air can be smoothly supplied to the flame opening during the combustion so that good burner combustion can be maintained.

In the heating chamber housing state, the interval between the flange portion forming the exhaust passage and the saddle plate member is set so that the upper exhaust outlet in the exhaust passage is set narrower than the lower exhaust inlet. The flange portion may be bent with respect to the main body portion.
In this case, while maintaining the exhaust passage of the combustion exhaust from the lower fire burner by the exhaust flow path, the angle of bending of the flange portion is reduced to suppress the rise of the flange portion, and the grill plate is made flat as a whole. It can be a shape. Therefore, the grill plate can be easily cleaned after use. Further, by making the grill plate as flat as possible close to the state in which the flange portion is laid down, the rising feeling of the flange portion is alleviated and the design can be improved.

In the heating chamber accommodated state, the distance between the flange portion forming the exhaust passage and the cover member is set such that the upper exhaust outlet in the exhaust passage is equal to or wider than the lower exhaust inlet. As described above, it is desirable that the flange portion is bent with respect to the main body portion.
Thereby, the outflow of the combustion exhaust from the exhaust outlet is promoted, and the escape of the combustion exhaust from the lower fire burner introduced into the exhaust passage can be improved. Therefore, in the lower fire burner, it is possible to reliably detect the ignition with a flame detector such as a thermocouple by the flame formed at the time of ignition. Further, the reignition is performed reliably without being inhibited by the combustion exhaust, and during the combustion of the lower flame burner, the secondary air is smoothly supplied to the flame opening, and good burner combustion is maintained.

In the heating chamber accommodation state, the clearance between the front end position of the flange portion and the facing surface on the side wall side of the heating chamber to which the flange portion has approached is the flange portion of the exhaust outlet of the exhaust flow path and the saddle plate member. It is desirable that the flange portion is bent with respect to the main body portion so as to be set wider than the interval.
Thereby, the outflow of the combustion exhaust from the exhaust outlet is promoted, and the escape of the combustion exhaust from the lower fire burner introduced into the exhaust passage can be improved.

It is desirable that the flange portion be provided with a through hole or a notch for letting out a part of the combustion exhaust gas that has flowed into the exhaust flow path in the heating chamber accommodated state.
Thereby, the escape of the combustion exhaust from the lower fire burner introduced into the exhaust passage can be further improved.

The through holes or notches are preferably provided corresponding to the side near the flame opening where the ignition electrode in the lower fire burner is arranged and the side near the flame mouth where the flame detector is arranged.
As a result, the combustion exhaust is reliably discharged without being accumulated in the vicinity of the flame opening of the lower fire burner in which the ignition electrode and the flame detector are disposed, and the secondary air is smoothly introduced. Therefore, in the lower flame burner, a good flame is formed at the time of ignition, and the ignition detection by the flame detector is reliably performed, and reignition by the ignition electrode is also reliably performed without being inhibited by the combustion exhaust gas.

The grill device according to the present invention is
At least a lower fire burner that extends in the front-rear direction is provided on each of the left and right side walls of the heating chamber, and from the side wall toward the center side in the left-right direction of the heating chamber so as to cover the upper side of the lower fire burner In the grill device provided with a plate member extending obliquely downward,
The grill plate used for placing an object to be cooked and being housed in the heating chamber is provided.
According to this grill device, the operation described in the above grill plate can be exhibited, and even if the grill plate has a size that is substantially the same as that of the grill, the lower flame burner has a good flame at the time of ignition. Thus, ignition is reliably detected, reignition is reliably performed without being obstructed by the combustion exhaust gas, and secondary air is smoothly supplied to the flame opening during combustion to maintain good burner combustion. be able to.

  As described above, according to the present invention, when the grill plate is used at the position of the grill net in the grill device, the exhaust formed by the flange portion of the grill plate and the plate member in the heating chamber is used. The exhaust of the combustion exhaust near the lower burner is smoothly performed through the flow path. Therefore, even if this grill plate is used instead of the grill, the flame detection performance, ignition performance, and combustion performance in the lower fire burner can be maintained well.

It is a perspective view which shows the grill apparatus with which a gas stove is equipped. It is sectional drawing which shows the internal structure of the grill apparatus in embodiment. It is a perspective view which shows the grill plate, juice tray, and support frame in embodiment. It is a top view which shows the grill plate in embodiment. It is a top view which shows a lower fire burner in relation to the grill plate of embodiment. It is a schematic diagram for demonstrating the exhaust flow path formed on a lower fire burner. It is a top view which shows the grill plate in other embodiment. It is a top view which shows a lower fire burner in relation to the grill plate of other embodiment.

Hereinafter, the present embodiment will be described with reference to the accompanying drawings.
As shown in FIG. 1, a grill plate 20 as an embodiment is used for placing an object to be cooked in a grill device 10 provided in a built-in gas stove 1, for example.
The grill apparatus 10 will be described with reference to FIGS. 1 and 2. The grill apparatus 10 includes a rectangular box-shaped grill box (heating box) 2 installed in the stove body 3 of the gas stove 1. 2, an upper fire burner 56 and a lower fire burner 55 are disposed as heating means, and a grill door 21 is provided at the front opening 100 of the grill cabinet 2. The grill door 21 is connected to a rail 60 installed in the grill cabinet 2, and slides back and forth in a pull-out manner to open and close the front opening 100 of the grill cabinet 2. A support frame 18 formed by bending a metal round bar is connected to the rear surface of the grill door 21 via a connecting member. When cooking is performed using the grill plate 20, the grill plate 21 is supported by the support frame 18 in place of the grill net 15 in a state where the grill door 21 is pulled forward, and the grill door 21 is pushed in and closed to close the grill plate 20. Is stored in a predetermined position in the grill cabinet 2. An exhaust opening 80 is formed in the upper portion of the rear wall 25 of the grill cabinet 2, and the exhaust opening 80 communicates with the exhaust duct 13 reaching the exhaust port 31 provided in the top plate 30 of the gas stove 1. Therefore, the combustion exhaust generated from the burners 55 and 56 in the grill box 2 and the oily smoke of the food to be cooked are introduced into the exhaust duct 13 from the exhaust opening 80 and discharged to the outside from the exhaust port 31.
In this specification, the direction in which the grill door 21 and the rear wall 25 of the grill cabinet 2 face each other is the front-rear direction, and the width direction of the grill cabinet 2 orthogonal to the front-rear direction is the left-right direction and the front-rear direction. The height direction of the grill cabinet 2 perpendicular to the vertical direction is the vertical direction.

  The upper fire burner 56 is a surface combustion type ceramic burner which is disposed on the ceiling wall 22 of the grill cabinet 2 and has a lower surface portion formed of a ceramic plate body forming a number of flame openings 560. The food to be cooked inside is heated from above. The lower fire burner 55 is a sheet metal type burner that is arranged extending in the front-rear direction below the left and right side walls 23, 24 of the grill cabinet 2, and is configured by overlapping metal plates such as stainless steel. The left and right lower fire burners 55 are formed with a plurality of flame outlets 550 at the side ends facing the center side in the left-right direction of the grill cabinet 2, and heat the food to be cooked accommodated in the grill cabinet 2 from below. The upper fire burner 56 and the lower fire burner 55 constitute a double-sided grilling apparatus that heats the food to be cooked stored in the grill cabinet 2 from above and below.

  The upper and lower sides of the lower fire burner 55 are surrounded by upper and lower flame rectifying plates 553a and 553b formed in a slope shape, and are formed at the flame outlet 550 of the lower fire burner 55 from a tapered tip portion by the upper and lower flame rectifying plates 553a and 553b. The flame extends substantially horizontally toward the center in the left-right direction of the grill cabinet 2. A lower fire cover 555 having a substantially trapezoidal cross section is provided on the flame rectifying plate 553a in order to prevent the flame rectifying plate 553a and the side walls 23 and 24 from becoming dirty. In the lower fire cover 555, a lower flange portion 555a that extends obliquely downward from the side walls 23, 24 of the grill warehouse 2 toward the center in the left-right direction so as to cover the upper portion of the lower fire burner 55 constitutes a saddle plate member. When the lower flame cover 555 is not installed and the upper flame rectifying plate 553a is exposed in the grill cabinet 2, the upper flame rectifying plate 553a constitutes a saddle plate member.

  Referring to FIG. 5, in lower fire burner 55, ignition electrode 551 is disposed at flame port 550a closest to gas inlet 55a on the base end side (rear side), and this ignition electrode 551 is disposed. A thermocouple 552 as a flame detector is disposed at the flame port 550b that is distant from the flame port 550a to the front end side (front side). In the embodiment, the thermocouple 552 is disposed at the second flame port 550b from the front end side of the lower flame burner 55. However, the present invention is not limited to this, and the fuel gas is injected more than the flame port 550 at the ignition electrode 551 position. For example, it may be arranged at the first flame outlet (the ignition flame is the last flame outlet) 550 on the tip side.

  Referring to FIG. 3, the support frame 18 is a bent body 181 formed of a metal round bar formed by bending the front and rear sides so as to protrude upward and forming a substantially U shape in a side view, Front and rear support plates 185 and 186 respectively attached to the front and rear end portions of the bent body 181 are provided. The front and rear sides of the bent body 181 are convex pedestal portions 182 that protrude upward. The pedestal portion 182 includes a pair of left and right first upper extending portions 194 that extend upward, and a pair of left and right step portions 195 that extend from the upper ends of the left and right first upper extending portions 194 so as to incline slightly inward in the left and right directions. And a pair of left and right second upper extending portions 196 extending upward from the inner end portions of the left and right step portions 195, and a horizontal portion 197 formed by connecting upper ends of the left and right second upper extending portions 196. It is configured.

  In the support frame 18, a substantially rectangular shallow dish-shaped juice receiving tray 16 is placed on the front and rear support plates 185 and 186, and the grill net 15 or the grill plate 20 is supported on the front and rear pedestal portions 182. The soup pan 16 is disposed under the grill 15 or the grill plate 20 on which the food to be cooked is placed in the support frame 18 and receives oil or the like scattered from the food to be cooked. The soup pan 16 is formed by forming a thin metal plate into a predetermined shape, and then applying heat-resistant clear coating or finish coating such as candy, and is formed slightly smaller than the grill plate 20 in the front-rear and left-right directions. In addition, when using the grill plate 20, the juice receiving tray 16 may or may not be used.

Next, the grill plate 20 will be described.
3 and 4, the grill plate 20 includes a substantially rectangular shallow dish-shaped main body portion 201 and flange portions 211 extending outwardly in the front-rear and left-right directions from the front-rear, left-right peripheral edges of the main-body portion 201, respectively. 212, and is formed in line symmetry in the front-rear and left-right directions. As the grill plate 20, for example, an aluminum press-molded body or cast body having a good thermal conductivity is preferably used, but another metal such as iron or copper or a ceramic body may be used.

  The main body portion 201 of the grill plate 20 is provided between the protruding strips and the protruding strips extending in the left-right direction so as to reduce the contact area of the cooking object to the grill plate 20 and make it difficult for the cooking item to stick. A corrugated concavo-convex portion 201a is formed in which a plurality of concave portions formed in the front and rear are formed at equal intervals in the front-rear direction. Grooves 201b projecting downward extend in the front-rear direction between the left and right ends of the uneven portion 201a and the left and right peripheral edges of the main body 201, respectively. Thereby, the oil and moisture dripped from the cooking object during cooking are accumulated in the concave portion and the groove 201b, and reattachment of oil or the like to the cooking object is suppressed. In the present embodiment, the vertices of the plurality of ridges are formed at substantially the same height so that a horizontal plane is formed by these, but ridges having different heights may be formed. . The main body 201 may be formed in a planar shape instead of the corrugated uneven portion 201a. Furthermore, although the recessed part of the uneven | corrugated | grooved part 201a is formed in the inclined surface so that it may incline below toward the left-right periphery from the left-right center part, you may form in a horizontal surface.

  The flange portions 211 and 212 of the grill plate 20 include a pair of left and right flange portions 211 respectively connected from the upper ends of the left and right peripheral edges of the main body portion 201, and a pair of front and rear flange portions 212 respectively connected from the upper ends of the front and rear peripheral edges. .

  The front and rear flange portion 212 has a left and right central portion extending substantially horizontally from the upper end of the front and rear peripheral edge of the main body portion 201 toward the front and rear and outer sides. It extends toward the front and rear outwards. The lower surfaces of the left and right end portions of the front and rear flange portion 212 are formed so as to be positioned on substantially the same plane, and are placed on the step portions 195 of the front and rear pedestal portions 182 in the support frame 18. As a result, the grill plate 20 is accommodated in the grill cabinet 2 so as to be at a height slightly above the lower flange 555a of the lower fire cover 555 disposed above the lower fire burner 55. In addition, the left and right end portions of the front and rear flange portion 212 may be formed at the same height as the left and right central portions, and a supported portion that is placed on the step portion 195 by joining other members may be provided.

  A notch portion 215 is formed at the left and right central portions of the front and rear flange portions 212. The notch portion 215 is cut inward from the outer edge portion. The left-right width of the notch 215 has substantially the same length as the horizontal portion 197 of the pedestal 182 in the support frame 18, and when the grill plate 20 is placed on the support frame 18, 2 The upper extending portion 196 is disposed in the notch portion 215 of the front and rear flange portion 212, and the position of the grill plate 20 in the front and rear and right and left directions in the grill cabinet 2 is determined.

  The left and right flange portions 211 extend in a blade shape obliquely upward and outward from the upper ends of the left and right peripheral edges of the main body portion 201 serving as a base end portion. The end portions of the left and right flange portions 211 are the left and right outer edge portions of the grill plate 20. When the grill plate 20 is housed in the grill cabinet 2 in a direction in which the left and right flange portions 211 are arranged on the left and right side walls 23 and 24 of the grill cabinet 2, the end portions of the left and right flange portions 211 are The width dimension of the left and right flange portions 211 is set so that a gap (C) is formed between the left and right side walls 23, 24 of the grill cabinet 2. The front and rear end portions of the left and right flange portions 211 are chamfered 211a so as to increase the distance from the left and right side walls 23 and 24 of the grill cabinet 2. Through holes 213 are provided in front and rear portions of the left and right flange portions 211. In addition, although each inclination angle with respect to the horizontal surface of the left and right flange portions 211 can be set as appropriate depending on the size of the grill box 2 and the arrangement of the lower fire burner 55, the left and right sides of the main body portion 201 at an angle of about 5 degrees to about 60 degrees. It is preferable that the upper end of the periphery be bent obliquely upward and outward.

  When cooking is performed by the grill apparatus 10 using the grill plate 20 having the above configuration, the grill plate 20 is placed on the support frame 18 so that the left and right flange portions 211 are on the left and right side walls 23 and 24 side in the grill cabinet 2. It is made to accommodate in the grill warehouse 2 in the direction located at. In the state in which the grill plate 20 is housed in the grill cabinet, the grill plate 20 is disposed above the lower fire burner 55, and the left and right flange portions 211 of the grill plate 20 are arranged so that the lower flange portion 555 a (the plate member) ) Is placed close to above. Since the left and right flange portions 211 of the grill plate 20 extend obliquely upward from the upper ends of the left and right peripheral edges of the main body portion 201, the lower fire burner 55 is provided between the left and right flange portions 211 and the lower flange portion 555a. An exhaust passage 7 is formed through which the combustion exhaust gas passes from below to above.

  In this case, the left and right flange portions 211 of the grill plate 20 and the lower flange portion 555a in the grill cabinet 2 face each other as an inclined surface in the same direction, and between the left and right flange portions 211 and the lower flange portion 555a. An exhaust passage 7 facing diagonally upward is formed above the lower fire burner 55. As a result, the combustion exhaust generated in the lower lower burner 55 flows smoothly through the exhaust passage 7 with the draft effect added and flows out upward of the grill plate 20. Accordingly, the combustion exhaust gas is smoothly discharged without accumulating near the flame port 550 of the lower flame burner 55, so that secondary air is smoothly introduced into the flame port 550 of the lower flame burner 55.

  In addition, through holes 213 are provided in the front and rear portions of the left and right flange portions 211, and a part of the combustion exhaust gas that has flowed into the exhaust passage 7 from the through holes 213 can flow out. Further, since both front and rear end portions of the left and right flange portions 211 are chamfered 211a, a part of the combustion exhaust gas that has flowed into the exhaust passage 7 can be discharged by the chamfered portion 211a. Therefore, the through holes 213 and the chamfer 211a can further improve the escape of combustion exhaust from the lower fire burner 55 introduced into the exhaust flow path 7, and the combustion in the vicinity of the flame port 550 of the lower fire burner 55 can be improved. It is possible to prevent the exhaust gas from staying.

  4 and 5, the through-hole 213 maintains the line symmetry in the front and rear portions of the grill plate 20, and the vicinity of the flame port 550 a where the ignition electrode 551 in the lower flame burner 55 is disposed and the thermostat. It is provided corresponding to each position in the vicinity of the flame outlet 550b where the couple 552 is disposed. As a result, even if the ignition electrode 551 and the thermocouple 552 are disposed in the respective flame outlets 550a and 550b separated in the front-rear direction of the lower fire burner 55, the lower electrode in which the ignition electrode 551 and the flame detector are disposed. At the flame outlets 550a and 550b of the fire burner 55, the combustion exhaust is more smoothly discharged without being accumulated more reliably and the secondary air is smoothly introduced.

  Therefore, even if the specification of the grill plate 20 is substantially the same as the size of the grill 15, the lower flame burner 55 forms a good flame at the time of ignition and reliably detects ignition by the thermocouple 552. In addition, reignition by the ignition electrode 551 is performed reliably without being obstructed by the combustion exhaust. Further, during the burner combustion, the secondary air is smoothly supplied to the flame port 550 of the lower flame burner 55, so that good burner combustion can be maintained. It is also possible to prevent erroneous detection that the thermocouple 552 misfires during burner combustion.

  As described above, when the grill plate 20 is mounted and used at the position of the grill net 15 in the grill device 10, the left and right flange portions 211 of the grill plate 20 and the lower flange portion 555 a of the lower fire cover 555 in the grill cabinet 2. The exhaust of the combustion exhaust near the lower fire burner 55 is smoothly performed through the exhaust passage 7 formed by Therefore, even if the grill plate 20 is used in place of the grill net 15, the flame detection performance, ignition performance, and combustion performance of the lower fire burner 55 can be maintained well.

  Further, as shown in FIG. 6, when the grill plate 20 is in the above-described grill storage state, the distance between the left and right flange portions 211 forming the exhaust flow path 7 and the lower flange portion 555a of the lower fire cover 555 is the exhaust flow rate. The dimension (B) of the upper exhaust outlet 72 in the passage 7 is smaller than the dimension (A) of the lower exhaust inlet 71, and the leading end of the left and right flange portions 211 and the rising surface (opposing surface) of the lower fire cover 555. The left and right flange portions 211 are bent with respect to the main body portion 201 so that the gap (C) is wider than the dimension (B) of the exhaust outlet 72 of the exhaust passage 7. Here, the exhaust inlet dimension (A) is the minimum distance between the base end (bent portion) of the left and right flange portions 211 and the lower flange 555a of the lower fire cover 555 of the grill cabinet 2, and the exhaust outlet dimension (B ) Is the minimum distance between the tip of the left and right flange portion 211 and the lower flange portion 555a, and the clearance (C) is the side wall 23 of the grill box 2 where the tip position of the left and right flange portion 211 and the left and right flange portion 211 approach each other, This is the distance from the 24th facing surface (the rising surface of the lower fire cover 555).

  From the above, it is possible to favorably maintain the upward discharge of the combustion exhaust from the lower fire burner 55 through the exhaust flow path 7, and to further reduce the bending angle of the left and right flange portions 211 to raise the left and right flange portions 211. Can be suppressed. In this way, the grill plate 20 can be easily cleaned after use by bringing the left and right flange portions 211 close to the laid state and the grill plate 20 is formed in a flat shape as a whole. Further, it is possible to facilitate the press working at the time of manufacturing the grill plate 20. Furthermore, by making the grill plate 20 as flat as possible, the feeling of rising of the left and right flange portions 211 is alleviated and the design of the grill plate 20 can be improved.

  And since the clearance (C) between the front-end | tip of the left-right flange part 211 and the standing surface of the lower fire cover 555 used as the opposing surface of the left-right side walls 23 and 24 is wider than the exhaust outlet dimension (B), A large space is opened above the outlet 72. Therefore, even if the exhaust outlet 72 in the exhaust passage 7 becomes narrower than the exhaust inlet 71 by reducing the bending angle of the left and right flanges 211 to suppress the rise of the left and right flanges 211, the combustion exhaust from the exhaust outlet 72 is reduced. The outflow is promoted, and the exhaust of the combustion exhaust from the lower fire burner 55 introduced into the exhaust passage 7 is not hindered. However, it is not preferable that the exhaust outlet 72 be narrower than 7/9 of the exhaust inlet 71 as described below.

  In this case, as a result of a flammability test to be described later, the vertical distance between the left and right flange portions 211 forming the exhaust flow path 7 and the lower flange 555a of the lower fire cover 555 is the lower exhaust inlet 71 in the exhaust flow path 7. The left and right flange portions 211 are bent with respect to the main body portion 201 so that the upper exhaust outlet 72 has a dimension setting of 7/9 or more, preferably 7/9 to 8/9. For example, as the dimensions in the exhaust flow path 7, the left and right flange portions 211 are in relation to the main body portion 201 so that the exhaust inlet dimension (A) is 9 mm, the exhaust outlet dimension (B) is 7 mm, and the gap (C) is 9 mm. It is bent and formed.

  Thus, when the dimensional ratio of the exhaust outlet 72 to the exhaust inlet 71 is less than 7/9 as the clearance dimension of the exhaust flow path 7, a good flame is not formed when the lower flame burner 55 is ignited, and ignition detection by the thermocouple 552 is detected. It may become unstable and cause an ignition error. Therefore, by setting the dimensional ratio of the exhaust outlet 72 to the exhaust inlet 71 to be 7/9 or more, the ignition can be reliably detected by the thermocouple 552 by the flame formed at the time of ignition in the lower fire burner 55. In addition, reignition is reliably performed without being obstructed by the combustion exhaust, and during combustion, secondary air is smoothly supplied and good burner combustion is maintained. If the dimensional ratio of the exhaust outlet 72 to the exhaust inlet 71 is set to a dimension of 7/9 to 8/9 within a range in which the dimension of the exhaust outlet 72 is smaller than that of the exhaust inlet 71, ignition in the lower fire burner 55 described above is performed. While maintaining the detection performance, ignition performance, and combustion performance, the bending angle of the left and right flange portions 211 can be reduced to suppress the rise of the left and right flange portions 211, and the overall flatness is excellent in cleanability and design. A grill plate 20 having a simple shape is obtained.

(Flammability test)
Next, using the grill plate 20 of the embodiment shown in FIG. 4, a flammability test at the time of ignition of the lower fire burner 55 was performed. In this flammability test, the lower fire burner 55 under the same setting conditions as in the case where the grill net 15 is used for the exhaust outlet dimension (B) changed by changing the bending angle of the left and right flange portions 211 of the grill plate 20. It was confirmed whether or not the ignition detection of the lower fire burner 55 could be stably performed by the thermocouple 552 installed in the factory.
In addition, as the grill plate 20 used for the test, the exhaust inlet dimensions (A) were all set to the same distance (9 mm). The width dimensions (length from the base end to the tip end) of the left and right flange portions 211 are all the same length (22.5 mm).
The results of the flammability test are shown in Table 1.
As shown in Table 1, when the exhaust outlet dimensions (B) were 7 mm, 9 mm, and 14 mm, the ignition detection of the lower flame burner 55 could be performed stably in the thermocouple 552. On the other hand, when the exhaust outlet dimension (B) was 5 mm, the thermocouple 552 failed to detect the ignition of the lower flame burner 55, resulting in an ignition error.
From the above, if the left and right flange portions 211 are bent in the main body portion 201 so that the ratio of the exhaust outlet size (B) to the exhaust inlet size (A) is 7/9 or more, the combustion of the lower fire burner 55 It was confirmed that the performance was maintained well.

  On the other hand, in the grill plate 20, the lower surface (rear surface) of the main body 201 has a shape obtained by transferring the upper surface (front surface), and the lower surface of the groove 201b projects downward from the lower surface on which the concave and convex portions 201a are formed. (See FIG. 2). Further, the lower surface of the concavo-convex portion 201a is formed by a curved surface that is slightly curved upward from the left and right peripheral edges toward the central portion. Furthermore, the lower surfaces of the front and rear peripheral edges of the main body portion 201 extend upward and outward from the lower surface of the concavo-convex portion 201a toward the lower surface of the front and rear flange portions 212 connected to the front and rear peripheral edges. Thereby, the left and right sides are surrounded by the lower surface of the groove portion 201 b on the lower surface of the main body portion 201, and a space that extends upward toward the front and rear flange portions 212 is formed at the front and rear peripheral edges.

  With the above configuration, the combustion exhaust discharged from the lower fire burner 55 to the central portion of the grill cabinet 2 easily flows backward from the space below the main body portion 201 of the grill plate 20 toward the rear flange portion 212. In addition, since the left and right central portions of the rear flange portion 212 are provided with notches 215 at the outer edge portions, as shown by the thick arrows in FIG. Collected below the central portion of the left and right of 212, is guided to the exhaust opening 80 via the notch 215, and easily flows into the exhaust duct 13. Therefore, also by the back surface structure of the grill plate 20 as described above, the exhaust of the combustion exhaust around the lower fire burner 55 can be promoted.

  In addition, the cooking temperature sensor 14a and the abnormal overheat detection temperature sensor 14b are projected from the left and right central portions of the rear wall 25 of the grill cabinet 2 toward the lower side of the rear flange portion 212 through which the combustion exhaust flows. Combustion exhaust can be sufficiently brought into contact with these temperature sensors 14a and 14b, and changes in the internal temperature can be detected with good responsiveness. Therefore, the cooking temperature sensor 14a can detect the atmosphere temperature in the grill cabinet 2 with good responsiveness during cooking, and the upper temperature is controlled by a control device (not shown) based on the cooking cabinet temperature detected by the cooking temperature sensor 14a. The heating power of the burner 56 and the lower fire burner 55 is adjusted appropriately. Also, the abnormal overheat detection temperature sensor 14b can detect the atmosphere temperature in the grill cabinet 2 with good responsiveness during cooking, and the internal temperature detected by the abnormal overheat detection temperature sensor 14b is higher than a predetermined temperature. Then, the gas supply to the upper fire burner 56 and the lower fire burner 55 is stopped and the fire is appropriately extinguished.

(Other embodiments)
As shown in FIG. 7, the grill plate 20 </ b> A according to another embodiment covers a range including through holes 213 (see FIG. 4) provided in the front and rear portions of the left and right flange portions 211 in the grill plate 20 of the above embodiment. The left and right flange portions 211 are provided with notches 214 at both front and rear end portions. Referring to FIG. 8, this notch 214 is a flame outlet in which the ignition electrode 551 in the lower flame burner 55 is disposed while maintaining the line symmetry at the front and rear portions of the grill plate 20 </ b> A in the above-described grill storage state. It is provided corresponding to each position in the vicinity of 550a and in the vicinity of the flame outlet 550b where the thermocouple 552 is disposed. The cutout 214 can further promote the outflow of a part of the combustion exhaust gas flowing into the exhaust passage 7 as compared with the case of the through hole 213 described above. Accordingly, the exhaust of the combustion exhaust from the lower fire burner 55 can be further improved, and the stay of the combustion exhaust near the flame port 550 of the lower fire burner 55 can be prevented. And in the flame opening 550a, 550b of the lower flame burner 55 in which the ignition electrode 551 and the flame detector are arranged, the combustion exhaust is more smoothly discharged without being accumulated and the secondary air is smoothly introduced. . Therefore, even if the size of the grill plate 20A is substantially the same as that of the grill 15, the lower flame burner 55 forms a good flame at the time of ignition and reliably detects the ignition by the thermocouple 552. Therefore, reignition by the ignition electrode 551 is also performed reliably without being obstructed by the combustion exhaust. In other embodiments, configurations and operational effects other than those described above are the same as in the above embodiment.

In addition, this invention is not limited only to each above embodiment, For example, it can change suitably in the range of the summary of this invention as follows.
(1) In each of the above embodiments, the left and right center portions of the front and rear flange portions 212 extend substantially horizontally from the front and rear peripheral edges of the main body portion 201 toward the front and rear outer sides. Further, it may be extended upward and outward, or may be extended downward and outward opposite to the left and right flange portions 211.
(2) In each of the above embodiments, the support frame 18 is used to place the grill plates 20, 20 </ b> A at predetermined positions in the grill cabinet 2, but the left and right side walls 23, 24 of the grill cabinet 2 are pin-shaped. A partial locking portion (such as a member that closes a space like a planar member continuous in the front-rear direction) may be provided, and the grill plates 20 and 20A may be supported by this locking portion.
(3) In each of the embodiments described above, the grill plates 20 and 20A having the rectangular main body 201 are used, but the main body 201 has various shapes such as hexagon, octagon, circle, and ellipse. A thing may be used.
(4) In each of the embodiments described above, the grill device 10 includes the upper fire burner 56 and the lower fire burner 55, but may include only the lower fire burner 55.
(5) In addition, the grill device 10 is not limited to the one incorporated in the gas stove 1, but may be configured independently.

1 Gas stove 2 Grill cabinet (heating chamber)
7 Exhaust flow path 10 Grill device 20, 20 </ b> A Grill plate 23, 24 Side wall 25 Rear wall 55 Lower fire burner 56 Upper fire burner 71 Exhaust inlet 72 Exhaust outlet 201 Main body part 211 Left and right flange part 211a Chamfer 212 Front and rear flange part 213 Through hole 214 Notch 215 Notch 550 Flame port 551 Ignition electrode 552 Thermocouple (flame detector)
553a, 553b Flame rectifying plate 555 Lower fire cover 555a Lower flange (A) Exhaust inlet dimensions (B) Exhaust outlet dimensions (C) Clearance

Claims (7)

At least a lower fire burner that extends in the front-rear direction is provided on each of the left and right side walls of the heating chamber, and from the side wall toward the center side in the left-right direction of the heating chamber so as to cover the upper side of the lower fire burner In the grill device provided with a plate member that extends obliquely downward, a grill plate that is used by placing an object to be cooked and housed in the heating chamber,
It has a shallow dish-shaped main body, and left and right flanges extending outward from the left and right peripheral edges of the main body,
When the grill plate is housed in the heating chamber in a direction in which the flange portion is disposed on the left and right side walls in the heating chamber, the flange portion is disposed above the plate member in the heating chamber. The flange portion is formed from the peripheral edge of the main body portion so that an exhaust passage for passing the combustion exhaust from the lower fire burner from below to above is formed between the flange portion and the saddle plate member. A grill plate that extends diagonally upward. The grill plate according to claim 1.
In the heating chamber housing state, the interval between the flange portion forming the exhaust passage and the saddle plate member is set so that the upper exhaust outlet in the exhaust passage is set narrower than the lower exhaust inlet. A grill plate in which a flange portion is bent with respect to a main body portion. The grill plate according to claim 1 or 2,
In the heating chamber accommodated state, the distance between the flange portion forming the exhaust passage and the cover member is set such that the upper exhaust outlet in the exhaust passage is equal to or wider than the lower exhaust inlet. As described above, the grill plate in which the flange portion is bent with respect to the main body portion. The grill plate according to any one of claims 1 to 3,
In the heating chamber accommodation state, the clearance between the front end position of the flange portion and the facing surface on the side wall side of the heating chamber to which the flange portion has approached is the flange portion of the exhaust outlet of the exhaust flow path and the saddle plate member. A grill plate in which the flange portion is bent with respect to the main body portion so as to be set wider than the interval. The grill plate according to any one of claims 1 to 4,
A grill plate in which the flange portion is provided with a through hole or a notch for letting out a part of the combustion exhaust gas that has flowed into the exhaust passage in the heating chamber accommodated state. The grill plate according to claim 5,
The said through-hole or a notch is a grill plate provided corresponding to the flame near side which arrange | positions the ignition electrode in a lower fire burner, and the flame near side which arrange | positions a flame detector, respectively. At least a lower fire burner that extends in the front-rear direction is provided on each of the left and right side walls of the heating chamber, and from the side wall toward the center side in the left-right direction of the heating chamber so as to cover the upper side of the lower fire burner In the grill device provided with a plate member extending obliquely downward,
A grill apparatus provided with the grill plate of any one of Claims 1-6 which mounts a to-be-cooked object and accommodates and uses it in the said heating chamber.

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