Heating cooking device and manufacturing method

Abstract

To provide a heating cooking device and a manufacturing method that allow an afterburner and a catalyst plate to be easily attached to an exhaust duct.SOLUTION: A burner support base 3 is fixed to the rear portion of a grill chamber 2. An afterburner 7 is attached to the burner support base 3 facing downward. A duct bottom plate 27 extends rearward from the rear portion of the grill chamber 2 and faces the burner support base 3 from below. A duct body 4 is connected to the rear portion of the burner support base 3 and the duct bottom plate 27. A catalyst plate is mounted inside the duct body 4. The lower portion of the box-shaped duct body 4 is open, and an exhaust port 49 is formed in an upper portion thereof. An opening 461 is formed in a front wall 46 of the duct body 4. A closing plate 34 is provided at the rear portion of the burner support base 3. When the duct body 4 is connected to the burner support base 3 and the duct bottom plate 27, the lower portion of the duct body 4 is closed by the duct bottom plate 27, and the opening 461 is closed by the closing plate 34.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a cooking device and a manufacturing method thereof. [Background technology]

[0002] Conventionally, grills have been known that have an afterburner in the exhaust duct that burns and eliminates oily smoke generated from the food being cooked, and a catalytic filter that is heated and activated by the combustion of the afterburner (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-55185 Summary of the Invention [Problem to be solved by the invention]

[0004] The configuration described in Patent Document 1 has the problem that it is difficult to assemble the grill because it is necessary to install an afterburner and a catalytic filter inside the exhaust duct.

[0005] SUMMARY OF THE INVENTION An object of the present invention is to provide a cooking apparatus and a manufacturing method thereof that allow an afterburner and a catalyst plate to be easily attached to an exhaust duct. [Means for solving the problem]

[0006] The cooking device of claim 1 is a cooking device comprising: a grill chamber equipped with a grill burner; an exhaust duct communicating with the rear of the grill chamber and discharging the combustion exhaust gas flowing from inside the grill chamber to the outside of the grill chamber; an afterburner attached to the exhaust duct on the upstream side of the flow of the combustion exhaust gas; and a catalyst plate attached to the exhaust duct on the downstream side of the afterburner and activated by the combustion heat of the afterburner. The exhaust duct comprises a burner support base fixed to the rear of the grill chamber and on which the afterburner is attached with its combustion surface facing downward; and a catalyst plate extending rearward from the rear of the grill chamber and The duct body comprises a bottom plate facing the burner support stand from below, and a box-shaped duct body connected to the rear part of the burner support stand and the bottom plate, and inside which the catalyst plate is attached, the duct body having an upper wall, a front wall, a pair of left and right side walls, and a rear wall, and is open at the bottom, an exhaust outlet is formed at the top of the duct body, an opening is formed in the front wall, and a blocking plate extending in the vertical direction is provided at the rear part of the burner support stand, and when the duct body is connected to the rear part of the burner support stand and the bottom plate, the bottom part of the duct body is blocked by the bottom plate, and the opening is blocked by the blocking plate.

[0007] The duct body of the heating cooking device of claim 2 may be either a first duct body in which the catalyst plate is attached to the interior in a position inclined diagonally forward with its upper end positioned forward and its lower end positioned rearward, or a second duct body formed with a narrower front-to-back width than the first duct body, and the first duct body and the second duct body may be interchangeably connected to the rear of the burner support stand.

[0008] In the second duct body of the cooking device according to claim 3, the catalyst plate may be attached therein in an attitude inclined at an angle steeper than the inclination angle of the catalyst plate in the first duct body.

[0009] The manufacturing method of claim 4 is a grill cabinet equipped with a grill burner, an exhaust duct that communicates with the rear of the grill cabinet and discharges combustion exhaust gas flowing from inside the grill cabinet to the outside of the grill cabinet, an afterburner attached to the exhaust duct on the upstream side of the flow of the combustion exhaust gas, and a catalyst plate that is attached to the exhaust duct on the downstream side of the afterburner and is heated and activated by the combustion heat of the afterburner, the exhaust duct being fixed to the rear of the grill cabinet and a burner support that is attached to the afterburner with the combustion surface facing downward. the rear of the burner support stand is provided with a cover plate extending in a vertical direction, and the duct body is connected to the rear of the burner support stand and the bottom plate, and has a box-like shape, and the catalyst plate is attached to the inside of the box-like duct body. The duct body has an upper wall, a front wall, a pair of left and right side walls, and a rear wall, and is open at the bottom. An exhaust port is formed at the top of the duct body, and an opening is formed in the front wall. The rear of the burner support stand is provided with a cover plate extending in a vertical direction, and the duct body is connected to the rear of the burner support stand and the bottom plate. In this manufacturing method for a cooking device that can be installed on a kitchen counter, the bottom plate closes the lower part of the duct body and the closing plate closes the opening, and the duct body includes a first duct body in which the catalyst plate is attached in an obliquely forward-frontward position with its upper end positioned forward and its lower end positioned rearward, and a second duct body formed to have a narrower front-to-rear width than the first duct body, so that when a gas oven is installed on the kitchen counter, an oven exhaust pipe of the gas oven can be arranged side by side at the rear. and a second duct body that can be used in combination with the burner support stand, and the cooking device is characterized in that in the second step, if the cooking device is not compatible with the gas oven, the first duct body is connected to the rear part and the bottom plate of the burner support stand, and if the cooking device is compatible with the gas oven, the second duct body is connected to the rear part and the bottom plate of the burner support stand. [Effects of the Invention]

[0010] According to the cooking device of claim 1, an opening is formed in the front wall of the duct body and the lower part of the duct body is open, so that the catalyst plate can be easily attached to the duct body, thereby improving the productivity of the cooking device.

[0011] According to the cooking device of claim 2, for example, if the cooking device is not compatible with a gas oven, the gas oven's exhaust pipe does not need to be located behind the cooking device's exhaust duct, so the first duct body can be connected to the burner support base. On the other hand, if the cooking device is compatible with a gas oven, the gas oven's exhaust pipe needs to be located behind the cooking device's exhaust duct, so the second duct body can be connected to the burner support base. In this way, by simply preparing two types of duct bodies, the cooking device can be compatible with both ovens and non-oven cookers, allowing for the use of standard components.

[0012] According to the cooking device of claim 3, catalyst plates of the same size can be housed and attached to both the first duct body and the second duct body, which allows for further standardization of components.

[0013] According to the manufacturing method of claim 4, when the cooking device is not compatible with a gas oven, the exhaust pipe of the gas oven does not need to be located behind the exhaust duct of the cooking device, so it is sufficient to connect the first duct body to the burner support base. On the other hand, when the cooking device is compatible with a gas oven, the exhaust pipe of the gas oven needs to be located behind the exhaust duct of the cooking device, so it is sufficient to connect the second duct body to the burner support base. In this way, by simply preparing two types of duct bodies, it is possible to accommodate both oven-compatible and non-oven-compatible cooking devices, allowing for the use of standard components. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. [Figure 2]FIG. 1 is a perspective view of a grill device 1. [Figure 3] FIG. 2 is a right side view of the grill device 1. [Figure 4] FIG. 1 is a cross-sectional perspective view of a grill device 1. [Figure 5] FIG. 1 is an exploded perspective view of a grill device 1. [Figure 6] FIG. 2 is an exploded perspective view of the burner support base 3 and the afterburner 7. [Figure 7] FIG. [Figure 8] FIG. 2 is an exploded perspective view of the duct body 4. [Figure 9] FIG. 9 is an exploded perspective view of the duct body 4 as seen from a different angle from that of FIG. 8. [Figure 10] 2 is a diagram showing the flow of combustion exhaust gas in an exhaust duct 10. FIG. [Figure 11] FIG. 2 is a perspective view of a stove 101 and a gas oven 201 installed on a kitchen counter 200. [Figure 12] FIG. 10 is a perspective view of a grill device 1 according to a second embodiment. [Figure 13] FIG. 10 is a right side view of the grill device 1 of the second embodiment. [Figure 14] FIG. 2 is a perspective view of the duct body 8. [Figure 15] FIG. 2 is an exploded perspective view of the duct body 8. DETAILED DESCRIPTION OF THE INVENTION

[0015] An embodiment of the present invention will be described below. Unless otherwise specified, the devices, component configurations, etc. described below are not intended to be limiting and are merely illustrative examples. The drawings are used to explain technical features that may be adopted by the present invention. In this embodiment, the front-to-back, left-to-right, and up-to-down directions shown in the drawings will be used for explanation. Furthermore, the scales of the drawings do not necessarily match each other, and the drawings are enlarged or reduced as appropriate depending on the objects shown.

[0016] <First Example> The structure of stove 101 will be described with reference to Figure 1. Stove 101 is a built-in stove and is attached inside a kitchen counter (not shown). Note that the kitchen counter in the first embodiment is not equipped with a gas oven 201 (see Figure 11).

[0017] Stove 101 includes a housing 102 and a top plate 103. A grill device 1 (see FIG. 2) is installed in the center of the left-right direction inside housing 102. Grill device 1 includes a grill chamber 2, and a grill burner is installed inside grill chamber 2.

[0018] A left burner 104 is provided on the left side of the top surface of the top plate 103, a right burner 105 on the right side of the top surface, a rear burner 106 on the rear center side, and an exhaust port 107 on the rear side of the top surface. The exhaust port 107 has a roughly rectangular shape that is long in the left-right direction when viewed from above. A lattice-shaped exhaust port cover 108 is attached to the exhaust port 107.

[0019] A grill door 109 is provided in the center of the front of the housing 102 so that it can be pulled out toward the front. The grill door 109 opens and closes a grill opening 13 (see FIG. 2) on the front side of the grill device 1. An exhaust duct 10 is connected to the rear of the grill chamber 2. An exhaust port 49 provided at the top of the exhaust duct 10 is positioned inside the exhaust port 107. Therefore, combustion exhaust from inside the grill chamber 2 is discharged to the outside from the exhaust port 107 via the exhaust duct 10.

[0020] The configuration of the grill device 1 will be described with reference to Figures 2 to 5. The grill device 1 shown in Figure 2 is not compatible with gas ovens. As shown in Figures 2 to 4, the grill device 1 includes a grill chamber 2 and an exhaust duct 10. The grill chamber 2 contains food to be cooked and heats and cooks it using a grill burner. The grill burner generates combustion exhaust gas inside the grill chamber 2 by burning gas.

[0021] The exhaust duct 10 is connected to the rear of the grill chamber 2. The exhaust duct 10 is chimney-shaped and extends upward. A communication port 9 is provided between the rear of the grill chamber 2 and the exhaust duct 10. The communication port 9 connects the inside of the grill chamber 2 with the inside of the exhaust duct 10. The exhaust duct 10 comprises a duct bottom plate 27, a burner support base 3, an afterburner 7, and a duct body 4, which will be described later (see Figure 5).

[0022] The structure of the grill chamber 2 will now be described. The grill chamber 2 is a roughly rectangular parallelepiped with an open front. A grill opening 13 is formed in the front of the grill chamber 2. The grill opening 13 is opened and closed by a grill door 109 (see Figure 1). The grill chamber 2 comprises a lower case 11 and an upper case 12. The upper case 12 is fixed to the top of the lower case 11 with screws (not shown). An upper burner 21 is provided in roughly the center of the upper case 12. The gas inlet portion 22 of the upper burner 21 is throat-shaped and is provided in the right rear corner of the upper case 12, opening to the right.

[0023] The structure of the lower case 11 will be described. As shown in FIG. 5, the lower case 11 has a bottom wall 15, a right wall 16, a left wall 17, and a back wall 18, and is box-shaped with an open top and front. A moving mechanism 19 is provided within the lower case 11. The moving mechanism 19 has rails and supports the grill door 109 and a grill grate (not shown) so that they can slide freely in the front-to-rear direction. A lower burner 23 is provided on the inner surface of the right wall 16, extending in the front-to-rear direction. A lower burner 24 is provided on the inner surface of the left wall 17, extending in the front-to-rear direction. The lower burners 23 and 24 face each other and form a flame toward the center of the grill chamber 2. The gas inlet portions 25 of the lower burners 23 and 24 are throat-shaped and are provided in the right rear portion of the lower case 11, opening to the right. In this embodiment, the upper burner 21 and the lower burners 23 and 24 are collectively referred to as "grill burners."

[0024] A sensor box 26 is provided in the center of the inner surface of the back wall 18 in the left-right direction. A temperature sensor (not shown) is provided in the sensor box 26. The temperature sensor measures the temperature inside the grill chamber 2.

[0025] As shown in Figures 4 and 5, a duct bottom plate 27 is screwed to the upper rear end side of the lower case 11. The duct bottom plate 27 protrudes rearward from the upper rear end side of the lower case 11 and is generally rectangular in plan view. The duct bottom plate 27 forms the bottom of the exhaust duct 10. A protruding piece 28 is provided at the rear end of the duct bottom plate 27. The protruding piece 28 protrudes diagonally upward from the rear side of the grill chamber 2. As shown in Figure 5, a fixing hole 271 is provided at the right rear corner of the duct bottom plate 27, a fixing hole 272 is provided at the right front corner, a fixing hole 273 is provided at the left rear corner, and a fixing hole 274 is provided at the left front corner.

[0026] The structure of the burner support base 3 will be described with reference to Figures 5 and 6. As shown in Figure 5, the burner support base 3 is fixed to the rear of the grill chamber 2 and forms the upstream portion (front end portion) of the exhaust duct 10. As shown in Figure 6, the burner support base 3 supports the afterburner 7, thermistor 351, and igniter electrode 352 (see Figure 10). The burner support base 3 is equipped with a support plate 31, a right plate 32, a left plate 33, and a covering plate 34.

[0027] The support plate 31 has a rectangular shape that is long in the left-right direction in a plan view. An opening 37 is provided in the support plate 31. The opening 37 has a substantially rectangular shape that is long in the left-right direction, and exposes a combustion surface 75 (see FIG. 10 ) of the afterburner 7, which will be described later, downward. Four fixing holes 311 are provided at the front end of the support plate 31 with a space between them on the left and right, and two fixing holes 312 are provided at the rear end with a space between them on the left and right.

[0028] The right plate 32 hangs down from the right end of the support plate 31 and is generally trapezoidal in side view. A fixing piece 321 is provided at the lower end of the right plate 32. The fixing piece 321 is generally rectangular in plan view and protrudes rightward from the lower end of the right plate 32. A fixing hole 322 is provided in the center of the fixing piece 321. An insertion hole 323 that penetrates in the left-right direction is provided near the upper end of the right plate 32. A thermistor 351 is inserted into the insertion hole 323. The thermistor 351 is fixed by a press plate (not shown) that is fixed to the underside of the support plate 31. The tip of the thermistor 351 is located below the support plate 31 and on the right end side of the opening 37.

[0029] The left plate 33 hangs down from the left end of the support plate 31 and is symmetrical to the right plate 32. A rectangular fixing piece (not shown) protruding to the left is provided at the bottom end of the left plate 33. A fixing hole (not shown) is provided in the center of the fixing piece. An insertion hole (not shown) penetrating in the left-right direction is also provided near the top end of the left plate 33. An igniter electrode 352 (see Figures 5 and 10) is inserted into the insertion hole. The igniter electrode 352 is fixed by a pressing plate (not shown) fixed to the underside of the support plate 31. The tip of the igniter electrode 352 is located below the support plate 31 and on the left end side of the opening 37.

[0030] A substantially triangular closure plate 38 is provided between the right end side of the front end of the support plate 31 and the front end of the right plate 32. A cover piece 381 that protrudes forward is provided between the lower oblique side of the closure plate 38 and the lower portion of the front end of the right plate 32. The cover piece 381 has a substantially V-shape that opens toward the left when viewed from the front. A substantially triangular closure plate 39 is provided between the left end side of the front end of the support plate 31 and the front end of the left plate 33. A cover piece 391 that protrudes forward is provided between the lower oblique side of the closure plate 39 and the lower portion of the front end of the left plate 33. The cover piece 391 has a substantially V-shape that opens toward the right when viewed from the front.

[0031] The closing plate 34 extends vertically upward from the rear end of the support plate 31 and has a generally rectangular shape that is long in the left-right direction when viewed from the front. The closing plate 34 closes an opening 461 provided in the front wall 46 of the duct main body 4 (described later). The closing plate 34 is provided with a reinforcing bulge 341. The bulge 341 is linear and long in the left-right direction when viewed from the front, and bulges from the front to the rear by press-forming of sheet metal. A fixing piece 36 is provided at the upper end of the closing plate 34, folding back toward the front. The fixing piece 36 has a generally rectangular shape that is long in the left-right direction when viewed from the top. Fixing holes 361 are provided in three locations in the fixing piece 36: in the center, on the right side, and on the left side.

[0032] As shown in FIG. 6, the afterburner 7 includes a burner body 71 and a burner flange 72. The burner body 71 is formed in a box shape that is long in the left-right direction and has an open bottom. A gas inlet 74 is provided at the right end of the burner body 71. The gas inlet 74 is throat-shaped and opens to the right. Gas and air flow in from the gas inlet 74 and are mixed inside the burner body 71. The burner flange 72 is fixed to the bottom of the burner body 71 and has a substantially rectangular frame shape that is long in the left-right direction when viewed from the bottom. A combustion body 70 (see FIG. 10) is fitted into an opening (not shown) inside the burner flange 72. A combustion surface 75 is formed on the bottom surface of the combustion body 70. The combustion surface 75 is exposed downward at the opening of the burner flange 72. The mixed gas mixed in the burner body 71 is supplied to the combustion body 70 and burns on the combustion surface 75, forming a flame directed downward.

[0033] A fixing flange 73 is provided on the outer periphery of the burner flange 72. The fixing flange 73 protrudes outward. The fixing flange 73 is a generally rectangular frame that is long in the left-right direction when viewed from the bottom. Four fixing holes 731 are provided at intervals on the front side of the fixing flange 73, and two fixing holes (not shown) are provided at intervals on the rear side.

[0034] The afterburner 7 is attached to the support plate 31 of the burner support base 3 from above. The fixing flange 73 of the burner flange 72 is positioned on the upper surface of the support plate 31. The combustion body 70 is positioned in the opening 37 provided in the support plate 31. Four fixing holes 731 provided in the front part of the fixing flange 73 are positioned with four fixing holes 311 provided on the front end side of the support plate 31 and are fastened with screws 91 (see FIG. 5). Two fixing holes (not shown) provided in the rear part of the fixing flange 73 are positioned with two fixing holes (not shown) provided on the rear end side of the support plate 31 and are fastened with screws (not shown). In this way, the afterburner 7 is attached to the burner support base 3. The burner support base 3 is positioned on the underside of the support plate 31 with the combustion surface 75 of the afterburner 7 facing downward.

[0035] The structure of the duct body 4 will be described with reference to Figures 5 and 7 to 9. As shown in Figure 5, the duct body 4 is connected to the rear of the burner support base 3 and forms the portion of the exhaust duct 10 downstream of the afterburner 7. As shown in Figure 7, the duct body 4 is generally box-shaped with openings on the front and bottom. An exhaust port 49 is provided at the rear end of the upper surface of the duct body 4. The exhaust port 49 is generally rectangular and elongated in the left-right direction in a plan view. An exhaust passage is formed inside the duct body 4, extending from the open front surface to the exhaust port 49. When the duct body 4 is viewed from the front, a catalyst plate 5 is attached inside the duct body 4. The catalyst plate 5 is positioned midway through the exhaust passage. The duct body 4 includes a duct front member 41 and a duct rear member 42 (see Figures 7 to 9).

[0036] The structure of the duct front member 41 will be described with reference to Figures 8 and 9. The duct front member 41 is generally inverted U-shaped and opens downward when viewed from the front. The duct front member 41 has an upper wall 43, a right wall 44, a left wall 45, and a front wall 46.

[0037] The upper wall 43 has a generally rectangular shape that is long in the left-right direction in a plan view. A protruding piece 431 is provided at the rear end of the upper wall 43. The protruding piece 431 protrudes diagonally upward relative to the rear side. The right rear corner of the upper wall 43 is fastened from above with a screw 93 to a fixing piece (not shown) that protrudes to the left from the front end side of the upper end of a right wall 44 (described below). The left rear corner of the upper wall 43 is also fastened from above with a screw 93 to a fixing piece (not shown) that protrudes to the right from the front end side of the upper end of a left wall 45 (described below). As a result, the left-right separation distance between the right wall 44 and the left wall 45 is maintained by the upper wall 43 being interposed therebetween.

[0038] The right wall 44 hangs down from the right end of the upper wall 43. The front end of the right wall 44 is generally linear and extends vertically in a side view. The rear end of the right wall 44 is a broken line that bends forward at gradually different angles from the top to the bottom. Therefore, the width of the right wall 44 in the front-to-rear direction narrows toward the bottom. Three insertion pieces 44A, 44B, and 44C (see FIG. 9 ) are provided in order from bottom to top on the rear end of the right wall 44. The positions of these insertion pieces 44A, 44B, and 44C correspond to the positions of slits 47A, 47B, and 47C provided in the right end of the duct rear member 42, which will be described later. Before the duct front member 41 is attached to the duct rear member 42, the insertion pieces 44A, 44B, and 44C protrude rearward. 7 and 8 show the state after the duct front member 41 has been attached to the duct rear member 42, and as will be described later, the insertion pieces 44A, 44B, and 44C are all bent to the left. The right wall 44 has a fixing hole 441, a pair of locking slits 442, a fixing piece 443, and a reinforcing rib 445.

[0039] The fixing hole 441 is provided in approximately the center of the upper half of the right wall 44. A pair of locking slits 442 are positioned diagonally across the center of the fixing hole 441, with the upper locking slit 442 being provided in front of the fixing hole 441 and the lower locking slit 442 being provided behind the fixing hole 441. The fixing piece 443 protrudes to the right from the lower end of the right wall 44. A fixing hole 444 is provided in the fixing piece 443. The reinforcing rib 445 is provided in an approximately straight line along approximately the lower half of the front end side of the right surface of the right wall 44. The reinforcing rib 445 bulges from the left to the right by press forming of sheet metal.

[0040] The left wall 45 hangs down from the left end of the upper wall 43. The left wall 45 has a symmetrical shape to the right wall 44. Three insertion pieces 45A, 45B, and 45C (see FIG. 9) are provided at the rear end of the left wall 45, starting from the bottom. The positions of these insertion pieces 45A, 45B, and 45C correspond to the positions of slits 48A, 48B, and 48C (see FIG. 8) provided at the left end of the duct rear member 42, which will be described later. Before the duct front member 41 is attached to the duct rear member 42, the insertion pieces 45A, 45B, and 45C protrude rearward. Note that FIGS. 7 and 8 show the state after the duct front member 41 has been attached to the duct rear member 42, and as will be described later, the insertion pieces 45A, 45B, and 45C are all bent to the right. The left wall 45, like the right wall 44, has a fixing hole 451, a pair of locking slits 452, a fixing piece 453, and a reinforcing rib 455.

[0041] The front wall 46 hangs down from the lower end of the upper wall 43 and extends to approximately the middle in the up-down direction between the right wall 44 and the left wall 45. An opening 461 that is rectangular in front view is provided in the front wall 46. The lower end of the opening 461 is flush with the lower end of the front wall 46, so the front wall 46 is approximately U-shaped and opens downward in front view. A protruding piece 462 is provided at the upper end of the opening 461. The protruding piece 462 has a rectangular shape that is long in the left-right direction in plan view and protrudes forward from the upper end of the opening 461. The protruding piece 462 has fixing holes 463 provided in three locations: the center, right side, and left side. The positions of these three fixing holes 463 correspond to the positions of the three fixing holes 361 (see FIG. 6) provided in the fixing piece 36 of the burner support base 3.

[0042] The structure of the duct rear member 42 will be described with reference to Figures 8 and 9. The duct rear member 42 is attached to the rear side of the duct front member 41 and forms the rear wall of the duct main body 4. The duct rear member 42 has a generally rectangular shape that is elongated in the vertical direction when viewed from the front, and a broken line shape that slopes forward at different angles from the upper end to the lower end when viewed from the side. The shape of the duct rear member 42 in a side view corresponds to the shape of the rear end of each of the right wall 44 and the left wall 45. The duct rear member 42 includes, in order from the bottom to the top, a first inclined portion 421, a second inclined portion 422, a third inclined portion 423, and a fourth inclined portion 424. The first inclined portion 421, the second inclined portion 422, the third inclined portion 423, and the fourth inclined portion 424 are all generally rectangular panels that are elongated in the horizontal direction.

[0043] The first inclined portion 421 is inclined obliquely upward from the lower end of the duct rear member 42 at a steep angle θ1 (see FIG. 10) toward the rear side. θ1 is, for example, 80°. The second inclined portion 422 is inclined obliquely upward from the upper end of the first inclined portion 421 toward the rear side at an angle θ2 (see FIG. 10) that is smaller than that of the first inclined portion 421. θ2 is, for example, 35°. The third inclined portion 423 is inclined obliquely upward from the upper end of the second inclined portion 422 toward the rear side at an angle larger than that of the second inclined portion 422. The fourth inclined portion 424 extends from the upper end of the third inclined portion 423 to the upper end of the duct rear member 42.

[0044] The right and left ends of the first inclined portion 421 are provided with approximately trapezoidal bent pieces 471, 481. The right and left ends of the second inclined portion 422 are provided with approximately trapezoidal bent pieces 472, 482. The right and left ends of the third inclined portion 423 are provided with approximately trapezoidal bent pieces 473, 483. The right and left ends of the fourth inclined portion 424 are provided with approximately trapezoidal bent pieces 474, 484. Slits 47A, 48A are provided at the base ends of the bent pieces 471, 481, respectively. Slits 47B, 48B are provided at the base ends of the bent pieces 473, 483, respectively. Slits 47C, 48C are provided at the base ends of the bent pieces 474, 484, respectively.

[0045] The catalyst plate 5 and fixing member 50 will be described with reference to Figures 8 and 9. The catalyst plate 5 is rectangular, and is, for example, a heat-resistant ceramic plate with a plurality of small holes, on which an oxidation catalyst such as platinum is supported. The catalyst plate 5 is heated and activated by the heat of combustion from the afterburner 7. When the combustion exhaust gas passes through the catalyst plate 5, the catalyst plate 5 oxidizes the oily smoke in the combustion exhaust gas, making it odorless and smokeless. A fixing member 50 is attached to such a catalyst plate.

[0046] The fixing member 50 is a member for fixing the catalyst plate 5 inside the duct body 4. The fixing member 50 includes a first frame 51 and a second frame 52. When the thickness direction of the catalyst plate 5 is oriented in the vertical direction, the first frame 51 is attached to the lower surface side of the catalyst plate 5, and the second frame 52 is attached to the upper surface side of the catalyst plate 5.

[0047] As shown in FIG. 8, the first frame 51 has a generally rectangular frame shape that is long in the left-right direction in a plan view. A rectangular opening 511 is provided in the center of the first frame 51. A central beam 512 is provided in the left-right center of the opening 511. A right support wall 53 is provided at the right end of the first frame 51, and a left support wall 54 is provided at the left end. The right support wall 53 and the left support wall 54 are generally rectangular. The right support wall 53 protrudes upward from the center of the right end of the first frame 51 and supports the right surface of the catalyst plate 5 from the right. The left support wall 54 protrudes upward from the center of the left end of the first frame 51 and supports the left surface of the catalyst plate 5 from the left.

[0048] The right support wall 53 has a fixing hole 531 and a pair of locking ribs 532. The fixing hole 531 is provided at the center and upper side of the right support wall 53 in the width direction. The pair of locking ribs 532 are provided at both ends of the right support wall 53 in the width direction (front-to-back direction) and protrude to the right. The left support wall 54 also has a fixing hole 541 and a pair of locking ribs 542. The fixing hole 541 is provided at the center and upper side of the left support wall 54 in the width direction. The pair of locking ribs 542 are provided at both ends of the left support wall 54 in the width direction (front-to-back direction) and protrude to the left.

[0049] 9, the second frame 52 also has a generally rectangular frame shape that is long in the left-right direction in a plan view. A rectangular opening 521 is provided in the center of the second frame 52. A central beam 522 is provided in the left-right center of the opening 521.

[0050] The catalyst plate 5 is placed and positioned on the upper surface of the first frame 51, and the second frame 52 is placed and positioned on top of that. The second frame 52 is fixed to the first frame 51 with the catalyst plate 5 sandwiched therebetween. This attaches the fixing member 50 to the catalyst plate 5. The fixing member 50 holds the catalyst plate 5 between the first frame 51 and the second frame 52.

[0051] 7 to 9, an example of a method for attaching the catalyst plate 5 to the duct body 4 will be described. For ease of explanation, when the fixing member 50 is attached to the catalyst plate 5, the surface on the first frame 51 side will be referred to as the front surface of the catalyst plate 5, and the surface on the second frame 52 side will be referred to as the rear surface of the catalyst plate 5.

[0052] As shown in Figures 8 and 9, first, with the fixing member 50 attached to the catalyst plate 5, the catalyst plate 5 is inserted into the inside of the duct front member 41. At this time, the screws 93, 93 that fixed the top wall 43 of the duct front member 41 to the right wall 44 and left wall 45 are removed. Therefore, by bending the right wall 44 and left wall 45 in directions away from each other and opening them, the catalyst plate 5 can be easily inserted into the inside of the duct front member 41. As described above, the duct front member 41 has a generally inverted U-shape that opens downward when viewed from the front, so the front, rear, and bottom sides of the duct front member 41 are widely open. This allows the catalyst plate 5 to be easily inserted into the inside of the duct front member 41 while being checked.

[0053] Next, with the front surface of the catalyst plate 5 inserted inside the duct front member 41 tilted diagonally downward, the pair of locking ribs 532 provided on the right support wall 53 of the fixing member 50 are locked into the pair of locking slits 442 provided in the right wall 44 of the duct front member 41. Furthermore, the pair of locking ribs 542 provided on the left support wall 54 of the fixing member 50 are locked into the pair of locking slits 452 provided in the left wall 45 of the duct front member 41.

[0054] At this time, the fixing hole 531 formed in the right support wall 53 of the fixing member 50 is aligned with the fixing hole 441 formed in the right wall 44 of the duct front member 41. The fixing hole 541 formed in the left support wall 54 of the fixing member 50 is aligned with the fixing hole 451 formed in the left wall 45 of the duct front member 41. Then, the screw 92 is inserted from the right into the fixing hole 441 in the right wall 44 and fastened to the fixing hole 531 in the right support wall 53. Furthermore, the screw 92 is inserted from the left into the fixing hole 451 in the left wall 45 and fastened to the fixing hole 541 in the left support wall 54.

[0055] The right rear corner of the upper wall 43 is then fixed from above to a fixing piece (not shown) protruding to the left from the front end side of the upper end of the right wall 44 by fastening a screw 93 thereto. The left rear corner of the upper wall 43 is also fixed from above to a fixing piece (not shown) protruding to the right from the front end side of the upper end of the left wall 45 by fastening a screw 93 thereto. This maintains the left-right separation distance between the right wall 44 and the left wall 45 by the presence of the upper wall 43, preventing the right wall 44 and the left wall 45 from moving apart. In this way, the catalyst plate 5 can be easily attached in the above-mentioned inclined position inside the duct front member 41 via the fixing member 50.

[0056] Next, the duct rear member 42 is attached to the duct front member 41 from the rear. Insert the insertion pieces 44A, 44B, and 44C provided at the rear end of the right wall 44 of the duct front member 41 into the right slits 47A, 47B, and 47C of the duct rear member 42, respectively, and bend them to the left. Next, insert the insertion pieces 45A, 45B, and 45C provided at the rear end of the left wall 45 of the duct front member 41 into the left slits 48A, 48B, and 48C of the duct rear member 42, respectively, and bend them to the right. At this time, the right bent pieces 471 to 474 of the duct rear member 42 abut against the outer surface of the right wall 44 of the duct front member 41. Furthermore, the left bent pieces 481 to 484 of the duct rear member 42 abut against the outer surface of the left wall 45 of the duct front member 41. As a result, the duct rear member 42 is fixed to the duct front member 41, and the assembly of the duct main body 4 is completed with the catalyst plate 5 attached inside.

[0057] As described above, the duct body 4 is box-shaped with its front and bottom sides open, and the exhaust port 49 is formed on the rear end side of the top surface of the duct body 4. A protruding portion 96 that protrudes forward of the exhaust port 49 is formed on the front side of the duct body 4. The protruding portion 96 is a corner portion that protrudes at a substantially right angle in side view and is formed by the top wall 43, the front end side of the right wall 44, the front end side of the left wall 45, and the front wall 46.

[0058] 10, the catalyst plate 5 is attached in such a manner that its upper end fits into the protruding portion 96 of the duct body 4. This allows the exhaust duct 10 to have a wide cross-sectional area at the position of the duct body 4 where the catalyst plate 5 is attached, thereby preventing pressure loss of the combustion exhaust gas within the exhaust duct 10. Therefore, the grill device 1 can maintain good combustibility of the grill burner within the grill chamber 2.

[0059] In this embodiment, the catalyst plate 5 is attached to the inside of the duct front member 41, and then the duct rear member 42 is attached from behind it, but other attachment methods may also be used.

[0060] 5, an example of a method for assembling the exhaust duct 10 to the grill chamber 2 will be described. First, the burner support base 3 is installed on the upper surface of the duct bottom plate 27 fixed to the upper rear end side of the lower case 11. The afterburner 7 is attached to the burner support base 3 in advance.

[0061] Next, the fixing hole 322 of the fixing piece 321 provided at the lower end of the right plate 32 of the burner support base 3 is aligned with the fixing hole 271 provided at the right rear corner of the duct bottom plate 27. Furthermore, the fixing hole (not shown) of the fixing piece provided at the lower end of the left plate 33 of the burner support base 3 is aligned with the fixing hole 273 provided at the left rear corner of the duct bottom plate 27. This positions the burner support base 3 on the upper surface of the duct bottom plate 27. At this time, the cover pieces 381, 391 provided on the front side of the burner support base 3 are brought into contact with the outer surfaces on both the left and right sides of the rear end of the upper case 12 of the grill chamber 2.

[0062] Next, the duct body 4 is installed on the upper surface of the duct bottom plate 27, behind the burner support base 3. At this time, the left and right ends of the closing plate 34 of the burner support base 3 are inserted into the rear sides of the front wall 46 on both the left and right sides through the front opening 461 of the duct body 4. As a result, the front protrusion 462 of the duct body 4 is positioned on the upper surface of the fixing piece 36 provided at the upper end of the closing plate 34 of the burner support base 3. At this time, the three fixing holes 463 provided in the protrusion 462 of the duct body 4 are respectively positioned with the three fixing holes 361 provided in the fixing piece 36 of the burner support base 3. Note that when the duct body 4 is shifted rearward relative to the burner support base 3, the left and right ends of the front surface of the closing plate 34 come into contact with the left and right ends of the rear surface of the front wall 46, which also serves to prevent the closing plate 34 from coming off.

[0063] Then, the fixing piece 443 provided at the lower end of the right wall 44 of the duct main body 4 is placed on top of the fixing piece 321 provided at the lower end of the right plate 32 of the burner support base 3. Then, screws (not shown) are fastened from above into the fixing holes 444 provided in the fixing piece 443, the fixing holes 322 provided in the fixing piece 321, and the fixing holes 271 in the duct bottom plate 27.

[0064] Furthermore, the fixing piece 453 provided at the lower end of the left wall 45 of the duct main body 4 is placed on top of the fixing piece (not shown) provided at the lower end of the left plate 33 of the burner support base 3. Then, screws (not shown) are fastened from above into the fixing holes 454 provided in the fixing piece 453, the fixing holes (not shown) provided in the fixing piece, and the fixing holes 273 of the duct bottom plate 27. This fixes the burner support base 3 and the duct main body 4 to the upper surface of the duct bottom plate 27.

[0065] Next, since the three fixing holes 463 provided in the protruding piece 462 of the duct main body 4 are positioned with the three fixing holes 361 provided in the fixing piece 36 of the burner support base 3, screws are fastened into these three fixing holes 463. This connects the duct main body 4 to the rear of the burner support base 3. Thus, the duct bottom plate 27, burner support base 3, and duct main body 4 are integrated at the rear of the grill chamber 2, and the exhaust duct 10 is completed.

[0066] In such an exhaust duct 10, a widened portion 95 is formed behind the mounting position of the afterburner 7. The mounting position of the afterburner 7 is the position of the support plate 31 of the burner support base 3. The widened portion 95 is a box-shaped portion whose vertical width is discontinuous and rises upward significantly behind the mounting position of the afterburner 7.

[0067] Furthermore, at the bottom side of the widened portion 95, the first inclined portion 421 of the duct rear member 42 is inclined obliquely upward at a steep angle. This forms a constricted portion 97 between the mounting position of the afterburner 7 and the widened portion 95. At the constricted portion 97, the lower portion of the duct rear member 42 is constricted forward. Therefore, at the constricted portion 97, the flow path area of ​​the combustion exhaust gas is narrower than the flow path area of ​​other portions within the exhaust duct 10.

[0068] 10, the flow of the combustion exhaust gas in the exhaust duct 10 will be described. The combustion exhaust gas that flows rearward through the communication port 9 flows directly below the combustion surface 75 of the afterburner 7. The afterburner 7 burns and eliminates oily smoke contained in the combustion exhaust gas.

[0069] The exhaust gas from the combustion that flows rearward just below the combustion surface 75 of the afterburner 7 is first concentrated in the constricted portion 97, then pushed into the widened portion 95 and rapidly diffused in the vertical direction. The catalyst plate 5 is supported in the widened portion 95 in an inclined position with its front surface facing diagonally downward. This allows the front surface of the catalyst plate 5 to face the exhaust gas flowing diagonally upward from the combustion surface 75 of the afterburner 7. The exhaust gas from the combustion can therefore pass smoothly through the porous interior of the catalyst plate 5, preventing excessive exhaust resistance in the exhaust duct 10 of the grill apparatus 1.

[0070] The catalyst plate 5 is heated and activated by the heat of combustion from the afterburner 7. Within the widened section 95, the exhaust gas diffuses vertically and uniformly contacts the catalyst plate 5. As the exhaust gas passes through the catalyst plate 5, the oily smoke in the exhaust gas is oxidized, making it odorless and smokeless.

[0071] Furthermore, the combustion heat that flows downward from the combustion surface 75 along the combustion direction of the afterburner 7 is pushed toward the widened section 95 by the flow of exhaust combustion air from the grill chamber 2. The combustion heat pushed into the widened section 95 is widely dispersed in the vertical direction along with the exhaust combustion air. This allows the exhaust duct 10 to uniformly transfer the combustion heat of the afterburner 7 to the catalyst plate 5, so that the catalyst plate 5 is heated uniformly and without waste. Therefore, the grill device 1 can evenly dissipate the oily smoke in the exhaust combustion air over a wide area of ​​the catalyst plate 5.

[0072] The combustion exhaust gas that has passed through the catalyst plate 5 and has been rendered odorless and smokeless is discharged from the exhaust duct 10 through the exhaust port 49.

[0073] In this exhaust duct 10, the catalyst plate 5 is supported in the widened portion 95 in the inclined position described above, so that the front surface of the catalyst plate 5 is close to the combustion surface 75, and the front surface faces the combustion surface 75. This allows the grill device 1 to efficiently heat the catalyst plate 5 using the combustion heat of the afterburner 7, further improving the oily smoke dissipation effect of the catalyst plate 5.

[0074] <Second Example> 11, in kitchen counter 200, stove 101 can be installed together with gas oven 201. Stove 101 is attached to the top of kitchen counter 200, and gas oven 201 is attached to the bottom of kitchen counter 200.

[0075] When used in combination with a gas oven 201, the stove 101 simply requires that a duct body 8 be attached to the rear of the grill device 1 instead of the duct body 4 of the first embodiment (see Figures 12 to 14). The duct body 8 is compatible with gas ovens. The front-to-rear width L2 (see Figures 12 and 13) of the duct body 8 is shorter than the front-to-rear width L1 (see Figures 2 and 3) of the duct body 4.

[0076] As shown in FIG. 11, gas oven 201 includes housing 202. An oven exhaust pipe 203 is provided at the rear of the top surface of housing 202. Oven exhaust pipe 203 discharges combustion exhaust gas generated within gas oven 201. Oven exhaust pipe 203 is a generally rectangular cylinder extending upward. An oven exhaust port 204 is formed at the upper end of oven exhaust pipe 203. Oven exhaust port 204 has a generally rectangular shape that is elongated in the left-right direction when viewed from above.

[0077] A cooling cylinder 205 is provided around the oven exhaust cylinder 203. Cooling air circulates within the cooling cylinder 205. The cooling cylinder 205 surrounds the oven exhaust cylinder 203 and extends upward together with the oven exhaust cylinder 203. A cooling opening 206 is formed at the upper end of the cooling cylinder 205, and an oven exhaust port 204 is arranged inside the cooling opening 206.

[0078] When a gas oven 201 is installed, an opening 110 is provided in the rear wall of the housing 102 of the stove 101 to guide the oven exhaust pipe 203 and the cooling pipe 205 to the exhaust port 107 of the stove 101. The oven exhaust pipe 203 and the cooling pipe 205 enter the housing 102 through the opening 110. An oven exhaust port 204 and a cooling opening 206 are arranged within the exhaust port 107.

[0079] Within exhaust port 107, exhaust port 89 of grill device 1, which will be described later, is located towards the front, and oven exhaust port 204 and cooling opening 206 of gas oven 201 are located behind exhaust port 89. This allows stove 101 to exhaust combustion exhaust air flowing from inside grill chamber 2 and combustion exhaust air flowing from gas oven 201 to the outside via exhaust port 107.

[0080] The configuration of the grill device 1 compatible with gas ovens will be described with reference to Figures 12 and 13. The grill device 1 of the first embodiment is not compatible with gas ovens. As described above, to make the grill device 1 of the first embodiment compatible with gas ovens, duct body 8 can be attached to the rear of the burner support base 3 instead of duct body 4. Duct body 8 is connected to the rear of the burner support base 3 and forms the portion of exhaust duct 10 downstream of afterburner 7.

[0081] The configuration of the duct body 8 will be described with reference to Figures 14 and 15. The configuration of the duct body 8 is the same as the configuration of the duct body 4 except that the front-to-rear width is different from the front-to-rear width of the duct body 4, so it will be described simply.

[0082] As shown in Figure 14, the duct body 8 is box-shaped with openings on the front and bottom. An exhaust port 89 is provided at the rear end of the top surface of the duct body 8. The exhaust port 89 is a generally rectangular shape that is long in the left-right direction in a plan view, and has the same shape and size as the exhaust port 49 of the duct body 4 (see Figures 5 and 7). An exhaust passage is formed inside the duct body 8, extending from the open front surface toward the exhaust port 89. When the duct body 8 is viewed from the front, a catalyst plate 5 is attached inside the duct body 8. The catalyst plate 5 is arranged midway through the exhaust passage.

[0083] As shown in Figure 15, the duct main body 8 includes a duct front member 81 and a duct rear member 82. Similar to the duct front member 41 of the duct main body 4, the duct front member 81 has a generally inverted U-shape that opens downward when viewed from the front. The duct front member 81 includes an upper wall 83, a right wall 84, a left wall 85, a front wall 86, and a protruding piece 831. The front-to-rear width of the upper wall 83 is shorter than the front-to-rear width of the upper wall 43 (see Figure 8) of the duct front member 41. The front-to-rear widths of the right wall 84 and the left wall 85 are also shorter than the front-to-rear widths of the right wall 44 and the left wall 45 of the duct front member 41. The front wall 86 is provided with an opening 861 that is rectangular when viewed from the front.

[0084] The right wall 84 is provided with a fixing hole 841, a pair of locking slits 842, etc. The left wall 85 is provided with a fixing hole 851, a pair of locking slits 852 (only one is shown in FIG. 15 ), etc. In the right wall 84, the pair of locking slits 842 are provided at positions diagonally sandwiching the fixing hole 841 in the center, with the upper locking slit 842 being provided in front of the fixing hole 841 and the lower locking slit 842 being provided behind the fixing hole 841. The inclination angle of the pair of locking slits 842 relative to the fixing hole 841 is steeper than the inclination angle of the pair of locking slits 442 relative to the fixing hole 441 of the right wall 44 of the first embodiment. The same applies to the fixing hole 851 and the pair of locking slits 852 in the left wall 85.

[0085] The duct rear member 82 is attached to the rear side of the duct front member 81 and forms the rear wall of the duct main body 8. The duct rear member 82 has substantially the same shape as the duct rear member 42 of the duct main body 4 (see FIG. 8). Like the duct rear member 42 of the first embodiment, the duct rear member 82 also has a substantially rectangular shape that is long in the vertical direction when viewed from the front, and a broken line shape that bends forward and slopes at gradually different angles from the upper end to the lower side when viewed from the side. The slope angle of the duct rear member 82 is steeper than the slope angle of the duct rear member 42 of the first embodiment.

[0086] An example of a method for attaching the catalyst plate 5 to the duct main body 8 will be described with reference to Figures 14 and 15. This method is basically the same as that of the first embodiment, so it will be explained briefly here. The catalyst plate 5 is inserted inside the duct front member 81 using the same method as in the first embodiment. Then, with the front surface of the catalyst plate 5 tilted diagonally downward, a pair of locking ribs 532 provided on the right support wall 53 of the fixing member 50 are locked into a pair of locking slits 842 provided in the right wall 84 of the duct front member 81 (see Figure 14). Furthermore, a pair of locking ribs 542 provided on the left support wall 54 of the fixing member 50 are locked into a pair of locking slits 852 provided in the left wall 85 of the duct front member 81 (see Figure 14).

[0087] Then, a screw 92 is inserted from the right into the fixing hole 841 in the right wall 84 and fastened to the fixing hole 531 in the right support wall 53. Also, a screw 92 is inserted from the left into the fixing hole 851 in the left wall 85 and fastened to the fixing hole 541 in the left support wall 54. This makes it possible to easily attach the catalyst plate 5 in the above-mentioned inclined position inside the duct front member 81 via the fixing member 50.

[0088] Finally, the duct rear member 82 is attached from behind to the duct front member 81 with the catalyst plate 5 attached to the inside. In this way, the assembly of the duct main body 8 is completed with the catalyst plate 5 attached to the inside.

[0089] As shown in Figure 14, an exhaust port 89 is formed on the rear end side of the upper surface of the duct main body 8. The inclination angle of the catalyst plate 5 attached to the inside of the duct main body 8 is steeper than the inclination angle of the catalyst plate 5 attached to the inside of the duct main body 4 of the first embodiment. This allows the same catalyst plate 5 as in the first embodiment to be stored and attached inside both the duct main body 4 and the duct main body 8. Therefore, the grill device 1 of this embodiment can use the same catalyst plate 5 in both the duct main body 4 and the duct main body 8.

[0090] Also, similar to the duct body 4 of the first embodiment, a protruding portion 801 is formed on the front side of the duct body 8, protruding further forward than the outlet 89. Furthermore, a constricted portion 802 is formed on the rear side of the duct body 8, below the duct rear member 82, similar to the constricted portion 97 (see FIG. 3) of the duct body 4. Also, as shown in FIGS. 12 and 13, in the grill device 1, a widened portion 800 is formed behind the mounting position of the afterburner 7, similar to the widened portion 95 (see FIG. 3) of the duct body 4.

[0091] Therefore, the grill device 1 of the second embodiment can also achieve the same effects as the grill device 1 of the first embodiment.

[0092] <Third Example> In this example, a manufacturing process for stove 101 will be described. To manufacture stove 101, grill device 1, a gas amount regulator (not shown), a stove burner, various pipes, etc. are installed inside housing 202, and finally a top plate is attached to the top of housing 202. Here, the grill device 1 to be installed inside housing 202 needs to be changed depending on whether or not a gas oven 201 will be installed on the kitchen counter where stove 101 is installed. In other words, if a gas oven 201 will not be installed, a grill device 1 that is not compatible with gas ovens needs to be installed, and if a gas oven 201 will be installed, a grill device 1 that is compatible with gas ovens needs to be installed.

[0093] In this embodiment, as explained in the first and second embodiments, the grill device 1 that is not compatible with gas ovens and the grill device that is compatible with gas ovens are made up of common parts except for the duct body.

[0094] Therefore, in the manufacturing process of grill device 1, it is sufficient to first manufacture the burner support base 3 and duct bottom plate 27 fixed to the rear of grill chamber 2 as common parts. In this state, for example, in the first step, burner support base 3 is attached to the rear of burner support base 3 and duct bottom plate 27. Then, in the second step, if the grill device 1 is not compatible with gas ovens, duct main body 4 is fixed to the rear of burner support base 3 and duct bottom plate 27. On the other hand, if the grill device 1 is compatible with gas ovens, duct main body 8 is fixed to burner support base 3 and duct bottom plate 27.

[0095] In this way, in this embodiment, most of the parts of the grill device 1 can be standardized except for the duct bodies 4 and 8, which is expected to simplify the manufacturing process, facilitate parts management, and reduce parts costs through standardization. Furthermore, the catalyst plate 5 attached inside the duct bodies 4 and 8 is also a common part, which further enhances the effect of standardizing parts.

[0096] As described above, the grill device 1 of this embodiment includes the grill chamber 2, exhaust duct 10, afterburner 7, and catalyst plate 5. The grill chamber is equipped with a grill burner. The exhaust duct 10 is connected to the rear of the grill chamber 2 and discharges the combustion exhaust gas flowing from inside the grill chamber 2 to the outside. The afterburner 7 is attached to the exhaust duct 10 on the upstream side of the combustion exhaust gas flow. The catalyst plate 5 is attached to the exhaust duct 10 downstream of the afterburner 7 and is heated and activated by the combustion heat of the afterburner 7. The exhaust duct 10 includes a burner support base 3, a duct bottom plate 27, and a duct body 4. The burner support base 3 is fixed to the rear of the grill chamber 2. The afterburner 7 is attached to the burner support base 3 with its combustion surface 75 facing downward. The duct bottom plate 27 extends rearward from the rear of the grill chamber 2 and faces the burner support base 3 from below. The duct body 4 is box-shaped and is connected to the rear of the burner support base 3 and the duct bottom plate 27. A catalyst plate is attached inside the duct body 4.

[0097] The duct body 4 comprises a duct front member 41 and a duct rear member 42. The lower part of the duct body 4 is open, and the duct front member 41 comprises an upper wall 43, a front wall 46, a right wall 44, and a left wall 45. An outlet 49 is formed in the upper part of the duct body 4, between the upper wall 43 and the duct rear member 42. An opening 461 is formed in the front wall 46. A closing plate 34 extending in the vertical direction is provided at the rear of the burner support base 3. When the duct body 4 is connected to the rear of the burner support base 3 and the duct bottom plate 27, the lower part of the duct body 4 is closed by the duct bottom plate 27, and the opening 461 is closed by the closing plate 34.

[0098] In this way, the opening 461 is formed in the front wall 46 of the duct body 4, and the lower part of the duct body 4 is open, so that the catalyst plate 5 can be easily attached to the duct body 4. Therefore, the productivity of the grill device 1 can be improved.

[0099] The present invention is not limited to the above embodiment, and various modifications are possible. The above embodiment is a grill device 1 and a stove 101, but any cooking device having a grill chamber 2 may be used. The stove 101 is a built-in stove, but it may also be a table stove.

[0100] In the above embodiment, the grill burners in the grill chamber 2 are composed of the upper burner 21 and a pair of left and right lower burners 23, 24, but for example, the upper burner 21 may be omitted.

[0101] In the above embodiment, the catalyst plate 5 is attached to the fixing member 50 and then installed inside the duct body 4, but the installation structure inside the duct body 4 may be a structure other than that of the above embodiment. The fixing member 50 is composed of a first frame 51 and a second frame 52, but the catalyst plate may be fixed to a single frame. [Explanation of symbols]

[0102] 1 Grilling device 2 Grill compartment 3 Burner support stand 4,8 Duct body 5 Catalyst Plate 7. Afterburner 10 Exhaust duct 34 Closure plate 41 Duct front part 42 Duct rear member 43 Upper Wall 44 Right wall 45 Left Wall 46 Front wall 49,89 Outlet 81 Duct front part 82 Duct rear member 83 Upper Wall 84 Right wall 85 Left Wall 86 Front wall 461,861 openings

Claims

1. A grill cabinet equipped with a grill burner; An exhaust duct that communicates with the rear of the grill chamber and discharges combustion exhaust gas flowing from inside the grill chamber to the outside of the grill chamber; an afterburner attached to the exhaust duct on an upstream side of the exhaust gas flowing from the combustion exhaust; a catalyst plate that is attached to the exhaust duct downstream of the afterburner and that is heated and activated by the combustion heat of the afterburner; In a cooking device comprising: The exhaust duct is A burner support base fixed to the rear part of the grill chamber, on which the afterburner is attached with the combustion surface facing downward; A bottom plate extending rearward from the rear of the grill chamber and facing the burner support base from below; a box-shaped duct body connected to the rear of the burner support and the bottom plate, and having the catalyst plate attached thereto; Equipped with The duct body includes an upper wall, a front wall, a pair of left and right side walls, and a rear wall, and is open at the bottom. An exhaust port is formed in an upper portion of the duct body, and an opening is formed in the front wall, A blocking plate extending in the vertical direction is provided at the rear portion of the burner support base, When the duct body is connected to the rear portion of the burner support base and the bottom plate, the lower portion of the duct body is closed by the bottom plate, and the opening is closed by the closing plate. A heating and cooking device characterized by the above.

2. The duct body includes: a first duct body in which the catalyst plate is attached with an upper end portion positioned forward and a lower end portion positioned rearward, so that the catalyst plate is inclined obliquely forward; a second duct body formed to be narrower in front-to-rear width than the first duct body; Any of the following: The first duct body and the second duct body are interchangeably connected to the rear portion of the burner support base. The heating and cooking device according to claim 1 .

3. In the second duct body, the catalyst plate is attached inside in an inclined position at an angle steeper than the inclination angle of the catalyst plate in the first duct body. The heating and cooking device according to claim 2 .

4. a grill chamber equipped with a grill burner; an exhaust duct communicating with the rear of the grill chamber and discharging combustion exhaust gas flowing from inside the grill chamber to the outside of the grill chamber; an afterburner attached to the upstream side of the exhaust duct along which the combustion exhaust gas flows; and a catalyst plate attached to the exhaust duct downstream of the afterburner and activated by being heated by the combustion heat of the afterburner, the exhaust duct being fixed to the rear of the grill chamber, a burner support base on which the afterburner is attached with its combustion surface facing downward; a bottom plate extending rearward from the rear of the grill chamber and facing the burner support base from below; a box-shaped duct body connected to the rear of a burner support stand and the bottom plate, and having the catalyst plate attached thereto, the duct body having an upper wall, a front wall, a pair of left and right side walls, and a rear wall, and an open lower part, an exhaust port formed in the upper part of the duct body, an opening formed in the front wall, and a closing plate extending in the vertical direction provided at the rear of the burner support stand, and when the duct body is connected to the rear of the burner support stand and the bottom plate, the lower part of the duct body is closed by the bottom plate, and the opening is closed by the closing plate, The duct body includes: a first duct body in which the catalyst plate is attached with an upper end portion positioned forward and a lower end portion positioned rearward, so that the catalyst plate is inclined obliquely forward; a second duct body that is narrower in width than the first duct body and that allows an oven exhaust pipe of the gas oven to be arranged behind the second duct body when the gas oven is installed on the kitchen counter; Any of the following: A first step of attaching the burner support base to the rear part of the grill cabinet; a second step of connecting the duct body to the rear portion and the bottom plate of the burner support base; Equipped with In the second step, When the cooking device is not compatible with the gas oven, the first duct body is connected to the rear portion and the bottom plate of the burner support base, When the cooking device is a gas oven compatible product, the second duct body is connected to the rear portion and the bottom plate of the burner support base. A manufacturing method characterized by:

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