JP7137879B2 - heating cooker - Google Patents

Description

The present invention relates to a heat cooker.

Conventionally, there is known a double-sided grill that employs an indirect heating method in which a cooking space in which a top-fire burner is arranged and a cooking plate is accommodated and a heating space in which a bottom-fire burner is arranged are vertically separated (for example, , see Patent Document 1).

JP 2016-10565 A

In the double-sided grill disclosed in Patent Document 1, the ignition electrode of the top burner is arranged at a position where it can be easily touched from the front side of the grill. As a result, there is a possibility that it will interfere with cleaning, or that the aluminum foil or the like will get caught on the ignition electrode, causing an ignition failure. Ignition failure may also be caused by the combustion exhaust from the lower burner hitting the ignition electrode of the upper burner, or by the adhesion of oil or ingredients splashed from the food to be cooked to the ignition electrode.

SUMMARY OF THE INVENTION An object of the present invention is to provide a heating cooker capable of improving workability during cleaning and preventing ignition failure of the burner.

A heating cooker according to claim 1 is a heating cooker comprising a plate-shaped burner in a grill chamber, wherein a plurality of flame holes provided on a combustion surface of the burner and an ignition flame hole among the plurality of flame holes. an ignition electrode provided in the vicinity thereof; and a cover provided on both left and right sides in the grill chamber and covering the ignition flame hole and the ignition electrode, wherein the cover includes the ignition flame hole and other parts. characterized in that an opening is provided for passing the flame that spreads to the flame hole of the flame hole.

According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, the ignition flame hole, the ignition electrode, and the cover may be provided on the back side of the grill chamber.

According to claim 3, in addition to the configuration of claim 1 or 2, the heat cooker is provided with the burner on the upper wall of the grill chamber, and the combustion surface faces downward. good.

The heating cooker of claim 4, in addition to the configuration of the invention of claim 3, includes a grill exhaust part provided at the rear part of the grill chamber for discharging combustion exhaust generated in the grill chamber to the outside, A partition wall provided between the inside of the grill chamber and the grill exhaust portion, and a partition wall provided in a region excluding the upper side of the partition wall to allow the combustion exhaust generated in the grill chamber to flow out to the grill exhaust portion. The cover is provided on the front side of the partition wall, protrudes forward from the upper side of the exhaust opening, and has a shape in which the front end side thereof is bent toward the upper wall. good too.

According to the heating cooker of claim 1, by covering the ignition electrode provided in the grill chamber with the cover, workability in cleaning the inside of the grill chamber can be improved. In addition, since it is possible to prevent aluminum foil or the like from being caught on the ignition electrode, it is possible to prevent ignition failure. In addition, it is possible to prevent the ignition electrode from being adhered to the oil or food that has spattered from the cooked food, thereby preventing ignition failure. In addition, in the case of a heating cooker having a separate burner below the burner, even if the combustion exhaust of the separate burner (or high temperature air heated by the separate burner) rises, it can be prevented from coming into direct contact with the ignition electrode. , can prevent ignition failure. After the ignition flame hole is ignited, the flame that spreads from the ignition flame hole to other flame holes passes through the opening of the cover, so that the flame reaches all the flame holes provided in the combustion part. It can be formed well. It should be noted that the ignition flame hole may be composed of not only one flame hole but also a plurality of flame holes. As a result, ignition performance can be improved. Since the cover is provided over both the left and right sides of the interior of the grill, the appearance of the interior of the grill when viewed from the front side can be improved.

According to the heating cooker of claim 2, in addition to the effect of the invention of claim 1, the ignition electrode is provided on the back side of the grill chamber, so that it can be easily touched from the front side of the grill chamber. You can avoid it. In addition, since the ignition electrode and the cover are provided on the back side of the grill chamber, it is possible to further improve workability when cleaning the inside of the grill chamber. In addition, since the ignition electrode and the cover are not conspicuous when the inside of the grill is viewed from the front side, the appearance of the inside of the grill can be improved.

According to the heating cooker of claim 3, in addition to the effects of the invention of claim 1 or 2, the burner is a so-called top-fire burner provided on the upper wall of the grill chamber. With such a top-fire burner, the effect described in claim 1 or 2 can be obtained.

According to the heating cooker of claim 4, in addition to the effect of the invention of claim 3, the cover protrudes forward from the upper side of the exhaust opening, and the front end side thereof is bent toward the upper wall of the grill chamber. It has a shape that Since the direction in which the cover protrudes faces the direction in which the user looks at the inside of the grill, the unevenness of the cover is inconspicuous. As a result, when the user views the inside of the grill from the front, the cover can be viewed integrally as part of the partition wall, so that the appearance of the inside of the grill can be improved.

In addition, in the heating cooker of the present invention, in addition to the configuration of the invention according to any one of claims 1 to 4, in the vicinity of the other flame hole ignited by the flame transfer from the ignition flame hole, A flame detector may be provided for detecting misfire, and the cover may cover the ignition flame hole, the ignition electrode and the flame detector. In this case, the cover covers not only the ignition electrode but also the thermocouple, so that the workability of cleaning the inside of the grill can be improved. In addition, since it is possible to prevent aluminum foil or the like from being caught on the thermocouple, it is possible to prevent erroneous detection of misfire. In addition, it is possible to prevent erroneous detection of a misfire because it is possible to prevent the oil and ingredients splashed from the cooked food from adhering to the thermocouple. In addition, for example, in the case of a heating cooker having a separate burner below the burner, even if the combustion exhaust gas from the separate burner rises, direct contact with the thermocouple can be prevented, thereby preventing erroneous misfire detection.

The inventions of claims 1 to 4 described above can be combined arbitrarily. For example, the configuration of at least one of claims 2 to 4 may be provided without including all or part of claim 1. However, in particular, it is preferable that the configuration of claim 1 is provided and at least one configuration and combination of claims 2 to 4 are provided. Arbitrary elements of claims 1 to 4 may be extracted and combined. The applicant intends to obtain patents for such configurations as well.

1 is a perspective view of a stove 1; FIG. Fig. 3 is a cross-sectional view of the stove 1 (the top plate is omitted) with the grill door 21 pulled forward. 2 is a cross-sectional view of the grill device 20; FIG. 2 is a cross-sectional perspective view of the grill device 20. FIG. 4 is a front view of the interior of the grill chamber 25. FIG. 4 is an enlarged view of the W1 area shown in FIG. 3; FIG. 5 is an enlarged view of the W2 area shown in FIG. 4; FIG. 3 is a perspective view of the top flame burner 50 as seen from above; FIG. FIG. 3 is a perspective view of the upper and lower surfaces of the top flame burner 50 in a state of being turned upside down; 3 is a diagram showing the positional relationship of an ignition electrode 31 and a flame detector 32 with respect to an ignition flame hole portion 535 and a flame detection flame hole portion 536. FIG.

Embodiments of the present invention will be described below. The structures of the devices described below are merely illustrative examples and not intended to be limiting unless specifically stated otherwise. The drawings are used to explain technical features that can be employed by the present invention. In the following description, left and right, front and rear, and up and down indicated by arrows in the drawings are used.

The structure of the stove 1 will be described with reference to FIG. Stove 1 is a built-in stove. A stove 1 includes a housing 2 and a grill device 20 inside the housing 2. - 特許庁The grilling device 20 is a so-called “indirect heating type” grilling device in which the interior of the grill chamber 25 is vertically divided into a cooking space 27 and a heating space 28 by an intermediate plate 40 .

A top plate 3 is provided on the top of the housing 2 . On the top plate 3, a right stove burner 4 is provided on the right front side, a rear stove burner 5 is provided on the central back side, and a left stove burner 6 is provided on the left front side. An exhaust port 7 is provided at the rear portion of the top plate 3 . Combustion exhaust from the grill chamber 25 (see FIG. 2) of the grill device 20 installed in the housing 2 is discharged to the outside through the exhaust port 7 . A grill door 21 is provided substantially in the center of the front surface of the housing 2 so as to be able to be pulled out toward the front side. The grill door 21 opens and closes a grill opening 26 provided on the front surface of the grill chamber 25 of the grill device 20 .

In the area on the right side of the grill door 21, operation buttons 11 to 13 are arranged in a horizontal row in order from the right side to the left side. An operation button 14 is provided on the left side of the grill door 21 at the same height as the operation buttons 11-13. The operation button 11 is for the right stove burner 4, the operation button 12 is for the inner stove burner 5, the operation button 13 is for the left stove burner 6, and the operation button 14 is for igniting and extinguishing the upper flame burner 50 and the lower flame burner 60 in the grill chamber 25. is pressed to The operation buttons 11 to 14 are substantially flush with the front surface of the stove 1 when the corresponding burners are extinguished (see FIG. 1). When pressed for ignition, the corresponding burner is ignited, and by a known push-push mechanism (not shown), the operation buttons 11 to 14 are moved forward from the front surface of the stove 1 in a substantially cylindrical shape. It protrudes outward, and rotation operation becomes possible in the protruding state. When the operation buttons 11 to 14 are rotated, the amount of gas supplied to the corresponding burner is adjusted so that the gas amount corresponds to the amount of rotation operation of the operation buttons 11 to 14 .

The structure of the grilling device 20 will be described with reference to FIGS. 2 and 3. FIG. As shown in FIGS. 2 and 3, the grill device 20 includes a substantially rectangular parallelepiped grill chamber 25 . A substantially rectangular grill opening 26 is provided on the front surface where the grill chamber 25 opens. A grill door 21 is provided on the front side of the grill opening 26 . A handle 22 projecting forward is provided on the front upper portion of the grill door 21 . The grill door 21 is provided so as to be movable in the front-rear direction by a rail mechanism 80 . The rail mechanism 80 can employ, for example, a well-known slide rail mechanism. The rail mechanism 80 includes, for example, a pair of fixed rail portions 81 and a pair of movable rail portions 82 . A pair of fixed rail portions 81 are fixed to lower portions on both the left and right sides inside the grill chamber 25 . The pair of movable rail portions 82 are provided so as to be movable in the front-rear direction along each of the pair of fixed rail portions 81 . A front plate portion 83 is fixed across the front ends of the pair of movable rail portions 82 in the left-right direction. The lower back surface of the grill door 21 is detachably connected to the front surface of the front plate portion 83 . A plate support frame 17 is detachably attached to the upper portion of the front plate portion 83 . The plate support frame 17 supports the cooking plate 10 substantially horizontally. The cooking plate 10 has an uneven surface on the bottom, but it may be flat. An object to be cooked (not shown) such as fish is placed on the uneven surface of the cooking plate 10 . The user can pull out the handle 22 of the grill door 21 to the front side and move the grill door 21 forward to take out the cooking plate 10 out of the grill chamber 25. - 特許庁

The space inside the grill chamber 25 is vertically partitioned by an intermediate plate 40 arranged substantially horizontally. Far-infrared enamel treatment may be applied to both upper and lower surfaces of the intermediate plate 40 . A cooking space 27 is formed above the intermediate plate 40 and a heating space 28 is formed below the intermediate plate 40 . In the cooking space 27 , a top burner 50 is provided on the upper wall portion 251 of the grill chamber 25 . The top flame burner 50 is a plate-shaped flat burner and forms a large number of flames downward. A specific structure of the top flame burner 50 will be described later. In the cooking space 27 , the cooking plate 10 supported by the plate support frame 17 is arranged substantially horizontally above the intermediate plate 40 . Therefore, the upper surface of the food placed on the cooking plate 10 is directly heated by the amount of heat from the top burner 50 . On the other hand, a bottom burner 60 is supported substantially horizontally in the heating space 28 . The lower flame burner 60 is also a plate-shaped flat burner and forms a large number of flames directed upward. As a result, the cooking plate 10 arranged in the cooking space 27 is heated from below by the amount of heat from the bottom burner 60 via the intermediate plate 40, so that the lower surface of the food to be cooked is indirectly heated. .

A grill exhaust section 70 is provided at the rear of the grill storage 25 . The grill exhaust part 70 is formed in a substantially tubular shape extending obliquely upward from the rear part of the grill storage 25 and communicates with the inside of the grill storage 25 . A grille exhaust port 71 having a laterally elongated substantially rectangular shape in a plan view is provided in the upper portion of the grille exhaust portion 70 . The grill exhaust port 71 is arranged directly below the exhaust port 7 of the top plate 3 . The inside of the grill exhaust part 70 is vertically partitioned by an inner wall 72 . The inner wall 72 extends obliquely upward from the rear end of the intermediate plate 40 to a predetermined position below the grille exhaust port 71 . An upper duct 74 is provided above the inner wall 72 . A lower duct 76 is provided below the inner wall 72 . Upper duct 74 receives combustion exhaust from cooking space 27 . A lower duct 76 receives combustion exhaust from the heating space 28 . An upper exhaust port 75 is provided at the downstream end of the upper duct 74 through which combustion exhaust flows. The upper exhaust port 75 discharges combustion exhaust that has flowed through the upper duct 74 toward the grill exhaust port 71 . A lower exhaust port 77 is provided at the downstream end of the lower duct 76 through which combustion exhaust flows. The lower exhaust port 77 discharges combustion exhaust that has flowed through the lower duct 76 toward the grill exhaust port 71 . The combustion exhaust discharged from the upper exhaust port 75 and the lower exhaust port 77 are both discharged to the outside from the grill exhaust port 71 .

With the above configuration, the grill device 20 can prevent the combustion exhaust from the cooking space 27 and the combustion exhaust from the heating space 28 from interfering with each other inside the grill exhaust section 70. Combustibility of the bottom fire burner 60 can be improved. In addition, since the sizes of the upper exhaust port 75 and the lower exhaust port 77 can be matched to the exhaust amounts of the top burner 50 and the bottom burner 60, interference of combustion exhaust can be further prevented. In addition, since the combustion exhaust from the grill chamber 25 is discharged using the upper duct 74 and the lower duct 76, the temperature of the entire grill exhaust section 70 including the upper duct 74 and the lower duct 76 rises. As a result, the draft force in the grill exhaust portion 70 is increased, so that fresh air can be taken in. Therefore, the grill device 20 can improve the combustibility of the top-fire burner 50 and the bottom-fire burner 60 .

A frame trap 65 is installed inside the upper exhaust port 75 . The flame trap 65 prevents the flame from coming out from the upper exhaust port 75 in the event that oil or the like of the food placed on the cooking plate 10 catches fire. Since the food to be cooked is separated from the heating space 28 by the intermediate plate 40 , the flame ignited by the oil content of the food to be cooked does not enter the lower duct 76 . Therefore, the frame trap 65 need only be provided inside the upper duct 74 and need not be provided inside the lower duct 76 . As a result, the combustibility of the bottom burner 60 can be improved, and the material cost of the flame trap 65 can be saved.

The structure of the back side of the cooking space 27 will be described with reference to FIGS. 2 to 7. FIG. A partition wall 30 is provided in the cooking space 27 at a predetermined position slightly forward of the rear end portion of the upper wall portion 251 . The partition wall 30 extends downward from a predetermined position of the upper wall portion 251 and extends over both left and right sides to partition the cooking space 27 and the upper duct 74 . An exhaust opening 301 penetrating in the front-rear direction is provided in a substantially central region of the partition wall 30 excluding the upper side thereof. The exhaust opening 301 is formed in a horizontally elongated substantially rectangular shape when viewed from the front, and allows combustion exhaust generated in the cooking space 27 to flow out to the upper duct 74 . An opening 302 for spreading fire (see FIG. 10) is provided at the upper end of the partition wall 30 . The flame spreading opening 302 is formed in a notch shape downward from the upper end portion of the partition wall 30 and opens upward toward the lower surface of the top flame burner 50 . An ignition electrode 31 is provided directly below the top burner 50 and behind the opening 302 for spreading fire. A flame detector 32 is provided in front of the opening 302 for spreading fire.

The ignition electrode 31 ignites an ignition flame hole portion 535 provided on the lower surface of the top flame burner 50, which will be described later, by causing spark discharge between the ignition electrode 31 and the discharge electrode 31A. The flame detector 32 detects a misfire in a flame detection port 536 provided on the lower surface of the top burner 50, which will be described later. The flame detector 32 may detect any one of the heat, light, and electrical characteristics of the combustion flame. For example, a frame rod can be used, and optical sensors classified into three types (ultraviolet type, visible light type, infrared type) according to the wavelength to be detected can be used. In the present embodiment, both the ignition electrode 31 and the flame detector 32 are arranged on the back side of the grill chamber 25, so that they cannot be easily touched from the grill opening 26 of the grill chamber 25. It's becoming Also, when cleaning the inside of the grill chamber 25, for example, sleeves of clothes are less likely to get caught on the ignition electrode 31 or the flame detector 32, so that workability during cleaning can be improved.

A protective cover 35 made of metal is provided on the front surface of the partition wall 30 above the exhaust opening 301 over the entire area in the left-right direction of the grill chamber 25 . The protective cover 35 covers and protects the ignition electrode 31 and the flame detector 32 arranged on the back side of the cooking space 27 from the front and the bottom. As a result, the ignition electrode 31 and the flame detector 32 do not protrude into the grill chamber 25 and are not exposed. can be reliably prevented. Therefore, workability during cleaning can be improved. In addition, since aluminum foil or the like can be prevented from being caught on the ignition electrode 31 and the flame detector 32, it is possible to prevent ignition failure by the ignition electrode 31 and detection failure by the flame detector 32. In addition, since it is possible to prevent the oil and ingredients splashed from the cooking object from adhering to the ignition electrode 31 and the flame detector 32, the ignition failure by the ignition electrode 31 and the detection failure by the flame detector 32 can be prevented.

The grilling device 20 of this embodiment is of a so-called "double-sided heating type indirect heating type" having a top-fire burner 50 and a bottom-fire burner 60 with an intermediate plate 40 interposed therebetween. The air in the cooking space 27 is heated from above by the top-fire burner 50, and is also heated from below by the amount of heat from the bottom-fire burner 60 via the intermediate plate 40. - 特許庁The hot air heated by the intermediate plate 40 rises, but the protective cover 35 prevents it from directly contacting the ignition electrode 31 and the flame detector 32 . As a result, poor ignition by the ignition electrode 31 and poor detection by the flame detector 32 can be prevented.

A flame spread opening 36 is provided in the protective cover 35 at a position corresponding to the tip of the ignition electrode 31 . As a result, at the rear of the protective cover 35, the flame that spreads from the flame hole ignited by the ignition electrode 31 (the ignition flame hole portion 535, which will be described later) to other flame holes passes through the flame spread opening 36. As such, the other burner holes located within the cooking space 27 are sequentially ignited. Therefore, flames can be formed satisfactorily in all flame holes of the upper flame burner 50 . A specific structure of the protective cover 35 will be described later.

The structure of the top flame burner 50 will be described with reference to FIGS. 8 and 9. FIG. The top flame burner 50 is a so-called flat burner formed in a plate shape. The top flame burner 50 includes a body portion 51 and a gas inlet portion 52 . The body portion 51 is formed in a substantially rectangular shape that is slightly elongated in the front-rear direction in a plan view, and a gas flow path forming portion 53 that is substantially rectangular in a plan view and has a substantially rectangular shape in a plan view is provided in the central portion excluding the outer peripheral edge portion. It is The inside of the gas channel forming portion 53 is hollow, and the internal space serves as the gas channel. The vertical width of the gas flow path is, for example, 5.5 mm. A recessed portion 54 having a substantially “X” shape in a plan view is formed in a substantially central portion of the upper surface of the gas flow path forming portion 53 . The recessed portion 54 is formed by recessing the upper surface of the gas flow path forming portion 53 downward. Therefore, the gas that has flowed into the inside of the gas flow path forming portion 53 wraps around the recessed portion 54 and is diffused throughout. At the left rear corner of the gas flow path forming portion 53, an extension portion 55 is provided that extends substantially linearly rearward. A substantially linear gas flow path connected to the gas flow path of the gas flow path forming portion 53 is also formed inside the extension portion 55 . It is preferable that the vertical width of the gas flow path of the extended portion is the same as that of the gas flow path forming portion 53 .

On the other hand, the gas inlet portion 52 includes a gas reservoir portion 56 , a throat portion 57 and a gas inlet port 58 . The gas reservoir portion 56 is provided at the rear end portion of the gas flow path forming portion 53 at substantially the central portion in the left-right direction. The throat portion 57 is formed in a substantially cylindrical shape that bends rightward from the gas reservoir portion 56 at a substantially right angle and extends rightward. The gas inlet 58 is an opening that is provided at the right end of the throat portion 57 and expands rightward like a trumpet. A nozzle of a gas amount adjusting device (not shown) is arranged to face the gas inlet 58 from the right side. The gas ejected from the nozzle flows into the gas inlet 58 while taking in surrounding air. The gas flows leftward through the throat portion 57 while being mixed with air, and flows vigorously into the inside of the gas flow path forming portion 53 from the gas reservoir portion 56 .

Between the gas reservoir 56 and the extended portion 55, an auxiliary flow path forming portion 59 having a substantially rectangular shape in a plan view is provided. The interior of the auxiliary channel forming portion 59 is also formed in a hollow shape and communicates with the gas channels of the gas reservoir portion 56 and the extension portion 55 . The auxiliary channel-forming portion 59 is lower than the upper surfaces of the gas channel-forming portion 53 and the extension portion 55 . Therefore, in the auxiliary flow path forming portion 59, a gas flow path having a narrower vertical width than the gas flow paths of the gas flow path forming portion 53 and the extension portion 55 is formed. , for example 1.0 to 2.0 mm. The auxiliary flow path forming portion 59 is provided with two concave portions 59A (see FIG. 8) arranged side by side in the left-right direction. The concave portion 59A is formed, for example, by pressing the upper wall of the auxiliary flow path forming portion 59 so as to protrude downward, and the lower end of the concave portion 59A is in contact with the upper surface of the lower wall inside the auxiliary flow path forming portion 59. . As a result, even if the top flame burner 50 is deformed by heat, the gap between the upper wall and the lower wall can be reliably maintained by the two recesses 59A in the auxiliary flow passage forming portion 59 . Therefore, gas can be reliably supplied from the gas reservoir 56 to the gas flow path in the extension part 55 through the gas flow path in the auxiliary flow path forming part 59 .

As shown in FIG. 9, on the lower surface of the gas flow path forming portion 53, a substantially U-shaped flame hole portion 530 is provided in bottom view. The flame hole portion 530 is formed by arranging a large number of flame holes, and includes a front flame hole portion 531, a right flame hole portion 532, a left flame hole portion 533, an extended flame hole portion 534, an ignition flame hole portion 535, and a flame. A detection burner port 536 is provided. In each flame hole, a flame is formed by igniting the gas supplied from the gas flow path forming portion 53 and the extension portion 55 . The front flame hole portion 531 extends in the left-right direction along the front end portion of the gas flow path forming portion 53 . The right flame hole portion 532 extends substantially linearly rearward from the right end portion of the front flame hole portion 531 . The left burner port 533 extends rearward substantially linearly from the left end of the front burner port 531 . The extended flame hole portion 534 extends substantially linearly from the rear end portion of the left flame hole portion 533 to the extension portion 55 .

The ignition flame hole portion 535 is provided at the rear end portion of the extended flame hole portion 534, and is formed by gathering a plurality of flame holes in a substantially circular shape. The ignition flame hole portion 535 is a group of flame holes that are first ignited by the ignition electrode 31 in the flame hole portion 530 . By configuring the ignition flame hole portion 535 with a group of flame holes, the ignition performance of the ignition electrode 31 can be improved as compared with the case where the flame hole portion 535 is composed of one or a small number of flame holes. On the other hand, the flame detection flame hole portion 536 is the rear end portion of the extended flame hole portion 534 and is provided in front of the ignition flame hole portion 535 with a space therebetween, and a plurality of flame holes are gathered in a substantially circular shape. formed by The flame detection flame hole portion 536 is a flame hole group for detecting flame by the flame detector 32 . By configuring the flame detection flame hole portion 536 with a group of flame holes, the detection performance of the flame detector 32 can be improved as compared with the case where the flame hole portion 536 is composed of one or a small number of flame holes.

Here, the right flame hole portion 532 and the left flame hole portion 533 each form a strip-shaped flame hole portion by arranging six rows of flame holes in the left-right direction in which the flame holes are aligned in the front-rear direction at predetermined intervals. is doing. On the other hand, the extended burner hole portion 534 is narrower than the right burner hole portion 532 and the left burner hole portion 533 by arranging two rows of burner holes in the longitudinal direction at predetermined intervals. It constitutes a band-shaped flame hole. Since the extended flame hole portion 534 is used only for spreading fire from the ignition flame hole portion 535 to the left flame hole portion 533 located in the cooking space 27, it is sufficient to supply only the amount of gas required for the fire spread. In this embodiment, the extended burner hole portion 534 is configured with fewer burner holes than the front burner hole portion 531, the right burner hole portion 532, and the left burner hole portion 533 used for heating the food to be cooked. , can save gas consumption.

In the top flame burner 50 having the structure described above, the gas that has flowed in from the gas inlet 58 flows leftward along the throat portion 57 and flows into the gas pool portion 56 . In the gas pool portion 56 , the gas diffuses inside while changing its direction from the left to the front, and most of it flows into the gas flow path forming portion 53 . Since the gas flowing in the gas flow path forming portion 53 is affected by the vector directed leftward due to the leftward flow in the throat portion 57 up to that point, the gas flows around the recessed portion 54 counterclockwise in plan view. , diffuses throughout the gas flow path in the gas flow path forming portion 53 . A part of the gas flowing through the gas flow path forming portion 53 flows into the gas flow path inside the extension portion 55 .

On the other hand, part of the gas diffused inside the gas pool portion 56 uniformly flows into the entire gas flow path inside the extension portion 55 . The gas flow path in the extension portion 55 extends in the direction opposite to the direction in which the gas flows from the gas reservoir 56 to the gas flow path forming portion 53, and the width of the flow path in the left-right direction is narrow. A sufficient amount of gas cannot be supplied to the extended flame hole portion 534 only by the amount of gas flowing into the extension portion 55 from 53 . On the other hand, in the present embodiment, since the gas also flows from the auxiliary flow path forming portion 59, the gas can be supplied with good distribution to the extended flame hole portion 534 provided on the lower surface of the extended portion 55. . As a result, the ignition can be reliably ignited at the ignition flame hole portion 535 .

As described above, the gas flowing from the gas reservoir 56 to the gas flow path forming portion 53 is affected by the vector directed leftward due to the gas flowing through the throat 57 up to that point. However, in the auxiliary flow path forming portion 59, the distance of the vertical width of the gas flow path inside the gas flow path forming portion 53 and the extension portion 55 is equal to Since the gas flow path is narrower than the gas flow path of , the gas is properly distributed toward the gas flow path forming portion 53 and the auxiliary flow path forming portion 59 . As a result, the gas can be appropriately supplied to the entire burner hole portion 530 .

The structure of the protective cover 35 will be described with reference to FIGS. 4 to 7. FIG. The protective cover 35 is formed by bending a sheet of metal plate, for example. The protective cover 35 is provided over both the left and right sides of the inside of the grill chamber 25 and has substantially the same width as the width of the partition wall 30 in the left-right direction. The protective cover 35 protrudes forward from the upper side of the exhaust opening 301 on the front side of the partition wall 30 , and its front end side is bent toward the upper wall portion 251 of the grill chamber 25 .

The protective cover 35 includes a mounting portion 351, a forward projecting portion 352, a bent portion 353, an insertion portion 354, and the like. The attachment portion 351 is formed in a substantially rectangular shape elongated in the left-right direction, and is attached along the front surface of the partition wall 30 in contact therewith. Three engaging claws 38 projecting downward are provided at three locations on the right, center, and left sides of the lower end portion of the mounting portion 351 (only two locations on the left side and the center are shown in FIG. 7). The pair of locking claws 38 are formed in three locking holes 303 (in FIG. only shown) are inserted from above and locked. Thereby, the lower end portion of the protective cover 35 is stably attached to the front side of the partition wall 30 in good balance. The forward projecting portion 352 is a portion projecting forward from the upper end portion of the mounting portion 351 as it goes upward. The bent portion 353 is a portion bent in a substantially arc shape from the front end portion of the forward projecting portion 352 toward the upper wall portion 251 of the grill chamber 25 . The insertion portion 354 is a portion that extends straight forward from the upper end portion of the bent portion 353 by folding back approximately horizontally. The insertion part 354 is inserted into a groove (not shown) formed between a fixing plate 91 fixed to the lower surface of the top flame burner 50 with a screw 90 and the lower surface. Thereby, the upper end of the protective cover 35 is attached to the lower surface of the top flame burner 50 . A fire spreading opening 36 (see FIG. 5) is provided on the left side of the bent portion 353 of the protective cover 35 . The opening 36 for spreading fire is formed in a substantially semicircular shape when viewed from the front. The position of the flame spread opening 36 corresponds to the position of the extended flame hole portion 534 of the top flame burner 50 .

The protective cover 35 having the shape described above is attached to the front surface of the partition wall 30 and to the upper side of the exhaust opening 301 . The protective cover 35 protrudes forward from the upper side of the exhaust opening 301 , and its front end side is bent toward the upper wall portion 251 of the grill chamber 25 . As a result, when the inside of the grill chamber 25 is viewed from the front, the protective cover 35 protrudes parallel to the viewing direction of the user, so that the unevenness of the protective cover 35 is inconspicuous. Thereby, the protective cover 35 can be seen integrally as a part of the partition wall 30, and the appearance inside the grill chamber 25 can be effectively improved. In addition, since the mounting portion 351 that is the lower end portion of the protective cover 35 is mounted in contact with the front surface of the partition wall 30 , the front surface of the partition wall 30 can be seen as a continuous shape. Thereby, the sense of unity between the partition wall 30 and the protective cover 35 can be emphasized. Furthermore, like the partition wall 30 , the protective cover 35 extends over both the left and right sides of the inside of the grill chamber 25 , so it can be seen as a wall that partitions the rear part of the cooking space 27 together with the partition wall 30 . Thereby, the appearance in the grill chamber 25 can be further improved.

Referring to FIG. 10, the positional relationship of the ignition electrode 31 and the flame detector 32 with respect to the ignition flame hole portion 535 and the flame detection flame hole portion 536 of the upper flame burner 50, and the phenomenon of fire transfer from the ignition flame hole portion 535. explain. 10 is a top view of the vicinity of the ignition electrode 31 and the flame detector 32, in which the position of the flame hole portion 530 is virtually indicated by a chain double-dashed line. As described above, the ignition electrode 31 is arranged behind the partition wall 30 and the spark discharge tip is arranged behind the opening 302 for spreading fire. The flame detector 32 is arranged in front of the partition wall 30 , and the tip for detecting flame is arranged in front of the opening 302 for spreading fire. An extended flame hole 534 of the top burner 50 is arranged in the longitudinal direction so as to pass through the opening 302 of the partition wall 30 for spreading fire and the opening 36 of the protective cover 35 for spreading fire. Furthermore, the tip of the ignition electrode 31 is arranged directly below the substantially central portion of the ignition flame hole portion 535 . The tip of the flame detector 32 is arranged directly below the substantially central portion of the flame detection port 536 (see FIGS. 4 and 10).

When the operation button 13 is pressed, the gas flows into the gas passage forming portion 53 in the top flame burner 50 , and the ignition electrode 31 is activated while the gas is supplied to the flame hole portion 530 . Spark discharge by the ignition electrode 31 ignites the ignition flame hole 535 first. Adjacent flame holes in the extended flame hole portion 534 are successively ignited by the flame formed in each flame hole of the ignition flame hole portion 535 . The flame that spreads along the flame holes of the extended flame hole portion 534 passes through the flame spread opening 302 of the partition wall 30 and the fire spread opening 36 of the protective cover 35 from the rear to the front. Here, in the openings 36 and 302 for spreading fire, the extended flame hole portions 534 having a short lateral width are arranged so that the ends of the partition wall 30 and the protective cover 35 are not scorched by flames. It has become. Thereby, it is possible to prevent the ends of the partition wall 30 and the protective cover 35 from being heated to a high temperature and being thermally deformed. Then, in the cooking space 27 , from the extended flame hole portion 534 , the left flame hole portion 533 , the front side flame hole portion 531 , and the right flame hole portion 532 are ignited in this order. In this way, flames are well formed in all the flame holes of the flame hole portion 530 of the upper flame burner 50 .

As described above, the grill device 20 of the stove 1 of the present embodiment includes the plate-shaped top-fire burner 50 in the grill chamber 25 . A combustion surface, which is the lower surface of the top flame burner 50, is provided with a burner hole portion 530 composed of a large number of burner holes. The flame hole portion 530 is provided with an ignition flame hole portion 535 , and the ignition electrode 31 is arranged directly below the ignition flame hole portion 535 . The ignition flame hole portion 535 and the ignition electrode 31 are covered with a protective cover 35 . The protective cover 35 is provided with a flame spread opening 36 for passing flame that spreads from the ignition flame hole 535 to another flame hole. By covering the ignition electrode 31 provided in the grill chamber 25 with the protective cover 35, workability in cleaning the inside of the grill chamber 25 can be improved. Further, since it is possible to prevent aluminum foil or the like from being caught on the ignition electrode 31, it is possible to prevent ignition failure. In addition, since it is possible to prevent the oil and foodstuffs splashed from the cooked food from adhering to the ignition electrode 31, ignition failure can be prevented. In addition, the grill apparatus 20 of the present embodiment is a double-sided heating type indirect heating apparatus that partitions the interior of the grill chamber 25 with an intermediate plate 40, has an upper heating burner 50 in the upper cooking space 27, and has a lower heating burner 60 in the lower heating space 28. Heating type. The air in the cooking space 27 is heated by the heat from the bottom burner 60 through the intermediate plate 40 and rises as high-temperature air. Ignition failure can be prevented. After being ignited by the ignition flame hole portion 535, the flame that spreads from the ignition flame hole portion 535 to another flame hole passes through the flame spread opening portion 36 of the protective cover 35. All flame holes provided in 530 can be well formed.

In the above description, the flame hole portion 530 provided on the combustion surface, which is the lower surface of the top flame burner 50, is an example of the "plurality of flame holes" of the present invention. The ignition flame hole portion 535 is an example of the "ignition flame hole" of the present invention. Protective cover 35 is an example of the "cover" of the present invention. The fire spreading opening 36 of the protective cover 35 is an example of the "opening" of the present invention.

The present invention is not limited to the above embodiments, and various modifications are possible. Although the said embodiment illustrated the built-in type stove 1, it may be a table stove. Moreover, although the stove 1 incorporates the grill device 20, it may be a heating cooker configured only with the grill device 20. FIG.

The grill apparatus 20 of the above-described embodiment is a double-sided heating type indirect heating type in which the inside of the grill chamber 25 is partitioned by the intermediate plate 40, the upper cooking space 27 is provided with a top burner 50, and the lower heating space 28 is provided with a bottom fire burner 60. However, it can also be applied to a general double-sided baking type that does not have the middle plate 40 . In addition, it is applicable to a single-side baking type that does not have a lower heat burner 60.

In the grill device 20 of the above embodiment, the ignition electrode 31 and the flame detector 32 are provided on the back side of the grill chamber 25 , but they do not have to be on the back side as long as they are inside the grill chamber 25 .

Although the protective cover 35 of the above-described embodiment is provided across the inside of the grill chamber 25 in the left-right direction, the shape can be freely changed as long as the ignition electrode 31 and the like can be covered.

Although the protective cover 35 in the above embodiment is attached to the front surface of the partition wall 30 , it may be formed integrally with the partition wall 30 . The shape of the protective cover 35 is not limited to the above embodiment, and can be freely changed.

In the grill apparatus 20 of the above-described embodiment, the ignition electrode 31 and the like of the top burner 50 are covered with the protective cover 35. However, the burner provided in the grill chamber, particularly the burner provided in the same space as the food to be cooked, can be used. may be covered with a protective cover. For example, in the case of a type in which a burner is provided on the side wall of the grilling chamber, the ignition electrode and the like of the burner on the side wall may be covered with a protective cover.

Reference Signs List 1 stove 20 grill device 25 grill chamber 30 partition wall 31 ignition electrode 32 flame detector 35 protective cover 36 opening for spreading fire 50 top burner 70 grill exhaust 251 upper wall 301 exhaust opening 530 flame hole 535 ignition flame hole

Claims (4)

In a heating cooker equipped with a plate-shaped burner in a grill chamber,
a plurality of flame holes provided on the combustion surface of the burner;
an ignition electrode provided in the vicinity of an ignition burner hole among the plurality of burner holes;
A cover provided on both left and right sides in the grill chamber and covering the ignition flame hole and the ignition electrode,
A cooking device according to claim 1, wherein the cover is provided with an opening for passing a flame that spreads from the ignition flame hole to another flame hole. 2. The heating cooker according to claim 1, wherein said ignition flame hole, said ignition electrode, and said cover are provided on the back side of said grill chamber. The burner is provided on the upper wall of the grill storage,
3. The heating cooker according to claim 1, wherein the combustion surface faces downward. a grill exhaust unit provided at the rear of the grill chamber for discharging combustion exhaust generated in the grill chamber to the outside;
a partition wall provided between the inside of the grill chamber and the grill exhaust part;
an exhaust opening provided in a region excluding the upper side of the partition wall and allowing the combustion exhaust generated in the grill chamber to flow out to the grill exhaust portion,
3. The cover is provided on the front side of the partition wall, protrudes forward from the upper side of the exhaust opening, and has a shape in which the front end side thereof is bent toward the upper wall portion. The heating cooker described in .

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