Heating cooking device

Abstract

To provide a heating cooking device capable of facilitating attachment of a fixing member to a catalyst plate.SOLUTION: A second frame 6 is aligned such that positions of receiving portions 670, 680 of guide grooves 67, 68 coincide with positions of burring portions 572, 582 of burring holes 57, 58 in a state where a catalyst plate 8 is placed on a first frame 5. The second frame 6 is guided so as to slide forward after being dropped toward the catalyst plate 8 side by the burring portions 572, 582 and the guide grooves 67, 68. The burring portions 572, 582 engage with respective rear end portions of peripheral edges of second grooves 672, 682 of the guide grooves 67, 68. Along with this engagement, respective engagement protrusions 612, 622 of a right projecting wall 61 and a left projecting wall 62 correspondingly engage with an engagement hole 512 of a right fixing portion 510 and an engagement hole 522 of a left fixing portion 520.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a cooking device. [Background technology]

[0002] Conventionally, a grill has been known that has an afterburner in an exhaust duct that burns and eliminates oily smoke generated from the food being cooked, and a catalyst plate 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] Normally, catalyst plates are fixed inside exhaust ducts with fixing members attached, but to improve grill production efficiency, there was a need to make it easier to attach fixing members to catalyst plates.

[0005] An object of the present invention is to provide a cooking device that can facilitate the attachment of a fixing member to a catalyst plate. [Means for solving the problem]

[0006] The cooking device of claim 1 is provided with an exhaust duct that discharges combustion exhaust gas flowing from inside a grill chamber to the outside of the grill chamber, and a catalyst plate is fixed in the exhaust duct with a fixing member. In this cooking device, when the thickness direction of the catalyst plate is assumed to be the up-down direction, the fixing member comprises a first frame that is attached from the underside of the catalyst plate and a second frame that is attached from the upper side of the catalyst plate, and supports the catalyst plate on the inside when the first frame and the second frame are combined with each other, and the first frame holds the catalyst plate. a first main body portion that supports the catalyst plate from below and has a first opening that faces the catalyst plate; a front support wall and a rear support wall that protrude upward from both front and rear end portions of the first main body portion and support the front and rear faces of the catalyst plate from both sides in the front-to-rear direction, respectively; and a right support wall and a left support wall that protrude upward from both left and right end portions of the first main body portion and support the right and left faces of the catalyst plate from both sides in the left-to-right direction, respectively. The second frame supports the catalyst plate from above and includes a second main body portion that has a second opening that faces the first opening via the catalyst plate; and a right protruding wall and a left protruding wall protruding upward from a portion of the right support wall and the left support wall, each of which has a fixing portion protruding further upward than an upper surface of the catalyst plate, and the fixing portion has a screw hole to be fastened with a screw to a duct side fixing hole provided in the exhaust duct, a burring hole having a burring portion protruding from an inner peripheral edge of the screw hole toward the center in the left-right direction, and an engagement hole provided on one side or the other side of the burring hole in the front-rear direction, and the right protruding wall and the left protruding wall are configured such that, when the first frame and the second frame are combined with each other, a receiving portion configured to overlap with an inner surface of each of the right support wall and the left support wall, opening downward, and receiving from below the burring portion provided in the burring hole of the fixing portion of each of the right support wall and the left support wall; a guide groove including a first groove portion extending upward from the receiving portion and a second groove portion extending from an upper end of the first groove portion to the one side in the front-rear direction; and an engaging protrusion provided on the one side or the other side of the guide groove in the front-rear direction, at a position corresponding to the engaging hole of the fixing portion, and protruding outward in the left-right direction,With the catalyst plate placed above the first frame, the second frame is aligned so that the position of the receiving portion of the guide groove coincides with the position of the burring portion, and is then dropped onto the catalyst plate side by the burring portion and the guide groove, and is guided to slide to the other side in the front-to-rear direction, and when the second frame has completed sliding to the other side, the burring portion engages with the end of the second groove portion on one side in the front-to-rear direction, and the engaging protrusions of the right protruding wall and the left protruding wall each engage with the engaging holes of the corresponding fixing portions.

[0007] The receiving portion of the cooking device of claim 2 may extend to the second main body portion, and the protruding width of the burring portion may be greater than the thickness width of each of the right protruding wall and the left protruding wall.

[0008] The fixing portion of the cooking device of claim 3 may be provided with a protrusion that protrudes outward in the left-right direction, and wall portions on both the left and right sides of the exhaust duct may be provided with insertion portions into which the protrusions can be inserted.

[0009] The catalyst plate of the cooking device of claim 4 may include at least a first catalyst plate and a second catalyst plate arranged side by side in the left-right direction, the first main body portion including a first cover portion covering the boundary between the first catalyst plate and the second catalyst plate from below, and the second main body portion including a second cover portion covering the boundary between the first catalyst plate and the second catalyst plate from above, the first cover portion having claw portions that protrude toward the catalyst plate and whose tip portions are bent in the same direction as the extension direction of the second groove portion, and the second cover portion having slits into which the claw portions can be inserted, so that when the second frame is dropped toward the catalyst plate by the burring portion and the guide groove, the claw portions are inserted into the slits, and when the second frame slides to the other side in the front-rear direction, the peripheral portions of the slits may slip inside the bent tip portions of the claw portions.

[0010] The catalyst plate of the heating cooking device of claim 5 comprises at least a first catalyst plate and a second catalyst plate arranged side by side in the left-right direction, the first main body portion comprises a first cover portion covering the boundary between the first catalyst plate and the second catalyst plate from below, and the second main body portion comprises a second cover portion covering the boundary between the first catalyst plate and the second catalyst plate from above, the second cover portion has claw portions that protrude toward the catalyst plate and have tip portions that bend in the opposite direction to the extension direction of the second groove portion, the first cover portion has slits into which the claw portions can be inserted, and when the second frame is dropped toward the catalyst plate by the burring portion and the guide groove, the claw portions are inserted into the slits, and when the second frame slides to the other side in the front-rear direction, the peripheral portions of the slits may slip inside the bent tip portions of the claw portions. [Effects of the Invention]

[0011] According to the heating and cooking device of claim 1, the second frame is aligned with the first frame on which the catalyst plate is placed and dropped onto the catalyst plate side, and then the fixing member can be easily attached to the catalyst plate by simply sliding the second frame to the other side in the forward / backward direction.

[0012] According to the cooking device of claim 2, the receiving portion extends to the second main body portion, preventing the burring portion from getting caught on the second frame when the second frame is dropped in. This makes it easy to attach the second frame to the first frame. Furthermore, since the receiving portion can receive burring portions that are longer than the thickness and width of the right and left protruding walls, the burring portions are prevented from falling out of the guide grooves. Therefore, the cooking device can more stably support the catalyst plate in the exhaust duct using the fixing member 20.

[0013] According to the cooking device of claim 3, the fixing members can be easily temporarily fixed to the exhaust duct by inserting the protrusions provided on the fixing portions of the right and left support walls of the first frame into the insertion portions provided on the left and right walls of the exhaust duct, thereby improving the ease of assembling the catalyst plate to the exhaust duct.

[0014] According to the heating cooking device of claim 4, the first main body portion of the first frame and the second main body portion of the second frame can be connected to each other by the claw portions and slits, so that the first catalyst plate and the second catalyst plate can be well supported even at the boundary position between the first catalyst plate and the second catalyst plate in the first main body portion and the second main body portion.

[0015] According to the heating cooking device of claim 5, the first cover portion of the first frame and the second cover portion of the second frame can be connected to each other by the claw portions and slits, so that the first catalyst plate and the second catalyst plate can be well supported even at the boundary position between the first catalyst plate and the second catalyst plate in the first main body portion and the second main body portion. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view of a grill device 1. [Figure 2] FIG. 1 is a cross-sectional perspective view of a grill device 1. [Figure 3] FIG. 1 is an exploded perspective view of a grill device 1. [Figure 4] FIG. [Figure 5] FIG. 2 is an exploded perspective view of the duct body 4. [Figure 6] FIG. 6 is an exploded perspective view of the duct body 4 as seen from a different angle from that of FIG. 5. [Figure 7] FIG. 2 is an exploded perspective view of a fixing member 20 and a catalyst plate 8. [Figure 8] FIG. 2 is a perspective view of a first frame 5. [Figure 9] FIG. 2 is a perspective view of a second frame 6. [Figure 10]FIG. 2 is a perspective view of a state in which a catalyst plate 8 is positioned on a first frame 5. [Figure 11] FIG. 1 is a perspective view showing a state in which a second frame 6 is placed on a first frame 5 on which a catalyst plate 8 is positioned. [Figure 12] FIG. 2 is a perspective view showing a state in which the second frame 6 has been slid rearward relative to the first frame 5. [Figure 13] 2 is a diagram showing the flow of combustion exhaust gas in an exhaust duct 10. FIG. [Figure 14] 10 is an exploded perspective view of a fixing member 200 (modified example) and a catalyst plate 8. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] 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.

[0018] The configuration of the grill device 1 will be described with reference to Figures 1 to 3. The grill device 1 is attached inside the housing of a built-in stove (not shown). The grill device 1 includes a grill chamber 2 and an exhaust duct 10. The grill chamber 2 contains food to be cooked, which is heated and cooked using a grill burner (described below). The grill burner generates combustion exhaust gas inside the grill chamber 2 by gas combustion.

[0019] The structure of the grill chamber 2 will now be described. As shown in Figures 1 and 2, 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 (not shown). As shown in Figure 3, 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.

[0020] 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 inside the lower case 11. The moving mechanism 19 has rails and supports the grill door and grill grate (not shown) so that they can slide freely in the front-to-rear direction. A lower burner 23 extends in the front-to-rear direction on the inner surface of the right wall 16. A lower burner 24 extends in the front-to-rear direction on the inner surface of the left wall 17. The lower burners 23 and 24 face each other and form a flame toward the center of the grill chamber 2. In this embodiment, the upper burner 21 and the lower burners 23 and 24 are collectively referred to as "grill burners."

[0021] The structure of the exhaust duct 10 will be described. As shown in Figures 1 and 2, the exhaust duct 10 is connected to the rear of the grill chamber 2. The exhaust duct 10 is chimney-shaped and extends upward. An exhaust port 49 is provided at the top of the exhaust duct 10. A communication port 9 (see Figure 2) 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. Therefore, the combustion exhaust gas generated in the grill chamber 2 flows into the exhaust duct 10 through the communication port 9 and is discharged to the outside through the discharge port 49.

[0022] 2 and 3, exhaust duct 10 includes a duct bottom plate 27, a burner support base 3, and a duct body 4. Duct bottom plate 27 is fastened with screws to the upper rear end side of lower case 11. Duct bottom plate 27 protrudes rearward from the upper rear end of lower case 11 and forms the bottom of exhaust duct 10.

[0023] 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. The burner support base 3 supports the afterburner 7. As shown in FIG. 3 , the burner support base 3 includes a support plate 31, a right plate 32, a left plate 33, and a closing plate 34.

[0024] The support plate 31 has a rectangular shape that is long in the left-right direction when viewed from above. An opening (not shown) is provided in the support plate 31. The opening has a roughly rectangular shape that is long in the left-right direction. A combustion surface 75 (described below) of the afterburner 7 is positioned in the opening. The right plate 32 hangs down from the right end of the support plate 31. The left plate 33 hangs down from the left end of the support plate 31. The lower ends of the right plate 32 and the left plate 33 are fastened to both the left and right sides of the upper surface of the duct bottom plate 27 with screws.

[0025] 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 (described below) that is provided in the front wall 46 of the duct body 4. A fixing piece 36 is provided at the upper end of the closing plate 34 and bent back forward. The fixing piece 36 has fixing holes 361 provided in three locations: the center, right side, and left side.

[0026] The structure of the afterburner 7 will be described. As shown in FIG. 3, the afterburner 7 comprises a burner body 71 and a burner flange 72. The burner body 71 is formed in the shape of a box that is long in the left-right direction, and its bottom surface is open. A gas inlet portion 74 is provided at the right end of the burner body 71. The gas inlet portion 74 is throat-shaped and opens to the right. Gas and air flow in from the gas inlet portion 74 and are mixed inside the burner body 71.

[0027] The burner flange 72 is fixed to the lower part of the burner body 71 and has a generally rectangular frame shape that is long in the left-right direction when viewed from the bottom. A combustion body 70 (see FIG. 2) is fitted into an opening (not shown) inside the burner flange 72. A combustion surface 75 is formed on the underside of the combustion body 70. The combustion surface 75 is exposed downward at the opening of the burner flange 72. The mixed gas mixed inside the burner body 71 is supplied to the combustion body 70. The mixed gas burns on the combustion surface 75, forming a flame directed downward.

[0028] 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 roughly rectangular frame that is long in the left-right direction when viewed from the bottom. The afterburner 7 is attached from above to the support plate 31 of the burner support base 3. The fixing flange 73 is positioned and fixed to the upper surface of the support plate 31. The combustion body 70 is positioned opposite an opening provided in the support plate 31. The combustion surface 75 of the combustion body 70 is positioned facing downward through the opening.

[0029] The structure of the duct body 4 will be described with reference to Figures 4 to 6. The duct body 4 is connected to the rear of the burner support base 3 (see Figure 3). The duct body 4 forms the portion of the exhaust duct 10 downstream of the afterburner 7. The duct body 4 is roughly 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. An exhaust passage is formed inside the duct body 4, running from the open front surface toward the exhaust port 49. When the duct body 4 is viewed from the front, a catalyst plate 8 is attached at an angle inside the duct body 4 via a fixing member 20 (see Figure 4). The catalyst plate 8 is positioned midway through the exhaust passage.

[0030] 5 and 6, the duct body 4 includes a duct front member 41 and a duct rear member 42. The duct front member 41 is generally U-shaped and opens downward when viewed from the front. The duct front member 41 includes an upper wall 43, a right wall 44, a left wall 45, and a front wall 46.

[0031] 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 from the rear side. The right wall 44 hangs down from the right end of the upper wall 43. The right wall 44 has a fixing hole 441, a pair of locking slits 442, and a fixing piece 443.

[0032] 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 provided at positions diagonally sandwiching the fixing hole 441 in the center, 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 fixing piece 443 is fastened to the right end of the upper surface of the duct bottom plate 27 with a screw.

[0033] The left wall 45 hangs down from the left end of the upper wall 43. Like the right wall 44, the left wall 45 has a fixing hole 451, a pair of locking slits 452, and a fixing piece 453. The fixing hole 451 is provided in approximately the center of the upper half of the left wall 45. The pair of locking slits 452 are positioned diagonally across from the fixing hole 451, with the upper locking slit 452 being provided in front of the fixing hole 451 and the lower locking slit 452 being provided behind the fixing hole 451. The fixing piece 453 protrudes leftward from the lower end of the left wall 45. A fixing hole (not shown) is provided in the fixing piece 453. The fixing piece 453 is fastened to the left end of the upper surface of the duct bottom plate 27 with a screw.

[0034] As shown in FIG. 5, the front wall 46 hangs down from the front end of the upper wall 43 and extends to approximately the middle of the right wall 44 and the left wall 45 in the vertical direction. The front wall 46 has an opening 461 that is rectangular when viewed from the front. The lower end of the opening 461 is flush with the lower end of the front wall 46, so the front wall 46 has a generally U-shape that opens downward when viewed from the front. A protruding piece 462 is provided at the upper end of the opening 461. The protruding piece 462 protrudes forward from the upper end of the opening 461. Three fixing holes 463 are provided in the protruding piece 462, at 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. 3) provided in the fixing piece 36 of the burner support base 3. The protruding piece 462 is attached to the upper surface of the fixing piece 36 of the burner support base 3 and fastened with three screws.

[0035] 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 long in the vertical direction when viewed from the front, and has a broken line shape that is bent and inclined forward at different angles in stages from the upper end to the lower side when viewed from the side.

[0036] 7 to 11, the configuration of the fixing member 20 attached to the catalyst plate 8 will be described. As shown in FIG. 7, the catalyst plate 8 is composed of two catalyst plates 8A and 8B. Each of the catalyst plates 8A and 8B 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. Hereinafter, the catalyst plates 8A and 8B will be collectively referred to as the catalyst plate 8. Such catalyst plates 8 are heated and activated by the combustion heat of the afterburner 7. When the combustion exhaust gas passes through the catalyst plate 8, the catalyst plate 8 oxidizes the oily smoke in the combustion exhaust, making it odorless and smokeless. In order to fix such catalyst plates 8 within the duct body 4, a fixing member 20 is attached to the catalyst plates 8.

[0037] The structure of the fixing member 20 will be described. As shown in Fig. 7, the fixing member 20 includes a first frame 5 and a second frame 6. When the thickness direction of the catalyst plate 8 is oriented in the vertical direction, the first frame 5 is attached to the lower surface side of the catalyst plate 8, and the second frame 6 is attached to the upper surface side of the catalyst plate 8.

[0038] The structure of the first frame 5 will be described. As shown in Fig. 8, the first frame 5 comprises a main body frame 50, a right support wall 51, and a left support wall 52. The main body frame 50 is a rectangular frame that is long in the left-right direction in a plan view, and supports the catalyst plate 8 from below. A rectangular opening 53 is provided in the center of the main body frame 50. The main body frame 50 comprises a flat bar-shaped front side portion 501, a rear side portion 502, a right side portion 503, and a left side portion 504.

[0039] An upwardly protruding front support wall 55 is provided at the front end of the front portion 501. An upwardly protruding rear support wall 56 is also provided at the rear end of the rear portion 502. A flat bar-shaped bridge plate 54 extending in the front-rear direction is provided between the left-right middle portion of the front portion 501 and the left-right middle portion of the rear portion 502. A claw portion 540 protrudes upward from the right end of the front-rear center portion of the bridge plate 54. The claw portion 540 includes a protruding piece 541 and a hook portion 542. The protruding piece 541 protrudes upward from the right end of the bridge plate 54 and is generally rectangular in side view. The hook portion 542 is provided at the upper end of the protruding piece 541 and has a hook shape that bends rearward in side view.

[0040] The right support wall 51 includes a right fixing portion 510 and a pair of front and rear protruding pieces 515. The right fixing portion 510 is provided at the center of the right end of the right side portion 503 in the front-to-rear direction, protruding upward. The pair of protruding pieces 515 are provided at the front and rear portions of the right end of the right side portion 503, excluding the right fixing portion 510. The right fixing portion 510 is generally rectangular in right side view. When the catalyst plate 8 is installed on the upper surface of the main body frame 50, the right fixing portion 510 protrudes upward above the upper surface of the catalyst plate 8 (see FIG. 10). The right fixing portion 510 includes a burring hole 57, a boss portion 511, an engagement hole 512, and a pair of locking ribs 513. An arc-shaped portion 514 is provided at the center of the upper end of the right fixing portion 510. The arc-shaped portion 514 protrudes upward in an arc shape.

[0041] The burring hole 57 is provided directly below the arc-shaped portion 514, and is located above the upper surface of the catalyst plate 8 when the catalyst plate 8 is placed on the upper surface of the main body frame 50 (see Figure 10). The burring hole 57 includes a screw hole 571 and a burring portion 572. The screw hole 571 is a round hole. The burring portion 572 is a short-axis cylindrical flange that protrudes to the left from the inner peripheral edge of the screw hole 571. The burring hole 57 is formed by burring. Burring refers to a process of adding a raised portion (flange) around a hole drilled in sheet metal. The width of the burring portion 572 that protrudes from the inner peripheral edge of the screw hole 571 is greater than the thickness width of a right protruding wall 61 (described below) of the second frame 6.

[0042] The boss portion 511 is provided at the bottom of the right fixing portion 510, directly below the burring hole 57. The boss portion 511 is generally linear and extends in the front-to-rear direction when viewed from the right side. When the catalyst plate 8 is installed on the upper surface of the main body frame 50, the boss portion 511 is located below the lower surface of the catalyst plate 8 (see Figure 10). The boss portion 511 is formed by stamping out sheet metal and protrudes leftward from the left surface of the right fixing portion 510. The engagement hole 512 is provided at the top of the right fixing portion 510 and behind the burring hole 57. The engagement hole 512 is a circular hole. A pair of locking ribs 513 are provided at the front and rear ends of the right fixing portion 510 and protrude rightward.

[0043] The left support wall 52 includes a left fixing portion 520 and a pair of front and rear protruding pieces 525. The left fixing portion 520 is provided at the center of the left end of the left side portion 504 in the front-to-rear direction, protruding upward. The pair of protruding pieces 525 are provided at the front and rear portions of the left end of the left side portion 504, excluding the left fixing portion 520. The left fixing portion 520 has a bilaterally symmetrical shape to the right fixing portion 510. When the catalyst plate 8 is installed on the upper surface of the main body frame 50, the left fixing portion 520 protrudes above the upper surface of the catalyst plate 8 (see FIG. 10). The left fixing portion 520 includes a burring hole 58, a boss portion 521, an engagement hole 522, and a pair of locking ribs 523. An arc-shaped portion 524 is provided at the center of the upper end of the left fixing portion 520. The arc-shaped portion 524 protrudes upward in an arc shape.

[0044] The burring hole 58 is provided directly below the arc-shaped portion 524, and is located above the upper surface of the catalyst plate 8 when the catalyst plate 8 is placed on the upper surface of the main body frame 50 (see Figure 10). The burring hole 58 has a screw hole 581 and a burring portion 582. The screw hole 581 is a round hole. The burring portion 582 is a short-axis cylindrical flange that protrudes to the right from the inner peripheral edge of the screw hole 581. The burring hole 58 is formed by burring processing. The width of the burring portion 582 that protrudes from the inner peripheral edge of the screw hole 581 is greater than the thickness width of the left protruding wall 62 of the second frame 6.

[0045] The boss portion 521 is provided at the bottom of the left fixing portion 520, directly below the burring hole 58. The boss portion 521 has a substantially linear shape extending in the front-to-rear direction when viewed from the left side. When the catalyst plate 8 is installed on the upper surface of the main body frame 50, the boss portion 521 is located below the lower surface of the catalyst plate 8 (see FIG. 10). The boss portion 521 is formed by stamping out sheet metal and protrudes rightward from the right surface of the left fixing portion 520. The engagement hole 522 is provided at the top of the left fixing portion 520 and behind the burring hole 58. The engagement hole 522 is a circular hole. A pair of locking ribs 523 are provided at the front and rear ends of the left fixing portion 520 and protrude rightward.

[0046] The structure of the second frame 6 will now be described. As shown in FIG. 9, the second frame 6 comprises a main body frame 60, a right protruding wall 61, and a left protruding wall 62. The main body frame 60 is a rectangular frame that is long in the left-right direction in a plan view, and supports the catalyst plate 8 from above (see FIG. 12). A rectangular opening 63 is provided in the center of the main body frame 60. The opening 63 faces the opening 53 of the first frame 5 in the up-down direction, with the catalyst plate 8 interposed between them (see FIG. 7). The main body frame 60 comprises a flat bar-shaped front side portion 601, a rear side portion 602, a right side portion 603, and a left side portion 604.

[0047] A flat bar-shaped crossing plate 64 extending in the front-rear direction is installed between the left-right intermediate portion of the front side portion 601 and the left-right intermediate portion of the rear side portion 602. A slit 641 extending in the front-rear direction is provided in the front-rear central portion of the crossing plate 64. A protruding piece 642 protruding upward is provided at the left end of the crossing plate 64. A protruding piece 651 protruding upward is provided at the rear end of the front side portion 601 to the right of the crossing plate 64, and a protruding piece 652 protruding upward is provided to the left of the crossing plate 64. A locking piece 653 protruding downward is provided at the rear end of the rear side portion 602.

[0048] A pair of protruding pieces 610 protruding upward are provided on the front and rear sides of the right end of the right side portion 603, excluding the center. A bulging portion 607 that bulges out to the left is provided in the center of the right side portion 603. The bulging portion 607 has a generally trapezoidal shape in plan view. A pair of protruding pieces 620 protruding upward are provided on the front and rear sides of the left end of the left side portion 604, excluding the center. A bulging portion 608 that bulges out to the right is provided in the center of the left side portion 604. The bulging portion 608 has a generally trapezoidal shape in plan view.

[0049] The right protruding wall 61 is provided in the front-to-rear center of the right end of the right side portion 603 and protrudes upward from this center. The right protruding wall 61 extends in the front-to-rear direction when viewed from the right side. The right protruding wall 61 has an oval portion 61A and a rectangular portion 61B. The oval portion 61A is provided forward of approximately the front-to-rear center of the right protruding wall 61 and has a generally semi-oval shape that is long in the front-to-rear direction when viewed from the right side. The rectangular portion 61B is provided rearward of approximately the front-to-rear center of the right protruding wall 61 and has a generally rectangular shape that is long in the front-to-rear direction when viewed from the right side.

[0050] A guide groove 67 is provided near the rear of the oval portion 61A. The guide groove 67 is inverted L-shaped when viewed from the right side. The guide groove 67 includes, in order from the bottom, a receiving portion 670, a first groove 671, and a second groove 672. The receiving portion 670 is provided at the lower end of the guide groove 67 and opens downward. The receiving portion 670 extends to approximately the center in the left-right width direction of the bulging portion 607 provided on the right side portion 603 of the main body frame 60. The portion of the receiving portion 670 extending leftward from the lower end of the right protruding wall 61 is at least longer than the length by which the burring portion 572 protrudes from the screw hole 571. The first groove 671 extends upward from the receiving portion 670. The second groove 672 extends rearward from the upper end of the first groove 671. The rear end of the second groove 672 is semicircular when viewed from the right side. A reinforcing rib 615 is provided on the ridge line connecting to the bulging portion 607 on the front side of the lower end of the oval portion 61A.

[0051] An engagement protrusion 612 is provided near the front of the rectangular portion 61B. The engagement protrusion 612 protrudes to the right and has a hemispherical tip. The engagement protrusion 612 is formed by pressing the rectangular portion 61B from left to right into a hemispherical shape.

[0052] The left protruding wall 62 is provided in the front-to-rear center of the left end of the left side portion 604 and protrudes upward from this center. The left protruding wall 62 extends in the front-to-rear direction when viewed from the left side. The left protruding wall 62 has an oval portion 62A and a rectangular portion 62B. The oval portion 62A is provided forward of approximately the center of the left protruding wall 62 in the front-to-rear direction and has a generally semi-oval shape that is long in the front-to-rear direction when viewed from the left side. The rectangular portion 62B is provided rearward of approximately the center of the left protruding wall 62 in the front-to-rear direction and has a generally rectangular shape that is long in the front-to-rear direction when viewed from the left side.

[0053] A guide groove 68 is provided near the rear of the oval portion 62A. The guide groove 68 is inverted L-shaped when viewed from the left side. The guide groove 68 includes, in order from the bottom, a receiving portion 680, a first groove 681, and a second groove 682. The receiving portion 680 is provided at the lower end of the guide groove 68 and opens downward. The receiving portion 680 extends to approximately the center in the left-right width direction of the bulging portion 608 provided on the left side portion 604 of the main body frame 60. The portion of the receiving portion 680 extending rightward from the lower end of the left protruding wall 62 is at least longer than the length by which the burring portion 582 protrudes from the screw hole 581. The first groove 681 extends upward from the receiving portion 680. The second groove 682 extends rearward from the upper end of the first groove 681. The rear end of the second groove 682 is semicircular when viewed from the left side. A reinforcing rib 625 is provided on the ridge line connecting to the bulging portion 608 on the front side of the lower end of the oval portion 62A.

[0054] An engagement protrusion 622 is provided near the front of the rectangular portion 62B. The engagement protrusion 622 protrudes to the left and has a hemispherical tip. The engagement protrusion 622 is formed by pressing the rectangular portion 62B from right to left into a hemispherical shape.

[0055] 10 to 12, an example of a method for attaching the fixing member 20 to the catalyst plate 8 will be described. As shown in FIG. 10, first, the catalyst plate 8A is placed on the right side of the upper surface of the main body frame 50 of the first frame 5, and the catalyst plate 8B is placed on the left side of the upper surface. In this state, the front support wall 55 abuts against the front surfaces of the catalyst plates 8A and 8B, and the rear support wall 56 abuts against the rear surfaces of the catalyst plates 8A and 8B. As a result, the catalyst plates 8A and 8B are positioned on the upper surface of the main body frame 50 in the front-to-rear direction.

[0056] The catalyst plates 8A and 8B are arranged side by side in the left-right direction and contact each other via the claws 540. In this state, the tip of the boss 511 of the right fixing part 510 abuts against the right surface of the catalyst plate 8A, and the tip of the boss 521 (see FIG. 8) of the left fixing part 520 abuts against the left surface of the catalyst plate 8B. Thus, the right fixing part 510 supports the right surface of the catalyst plate 8A, and the left fixing part 520 supports the left surface of the catalyst plate 8B. In this way, the catalyst plates 8A and 8B are positioned on the upper surface of the main body frame 50 in the left-right direction as well. In this way, the catalyst plates 8A and 8B are set on the upper surface of the main body frame 50. In this state, the hooks 542 of the claws 540 provided on the bridge plate 54 of the first frame 5 protrude upward from between the catalyst plates 8A and 8B.

[0057] Next, the second frame 6 is dropped from above onto the first frame 5, which has the catalyst plates 8A and 8B set on the upper surface of the main body frame 50. At this time, the burring portion 572 (see FIG. 8 ) provided on the right fixing portion 510 of the first frame 5 is inserted from the receiving portion 670 into the guide groove 67 of the right protruding wall 61 of the second frame 6. As described above, the receiving portion 670 of the guide groove 67 extends to the center in the left-right width direction of the bulging portion 607 of the right side portion 603, and the portion extending leftward from the lower end of the right protruding wall 61 is at least longer than the length by which the burring portion 572 protrudes. This prevents the burring portion 572 from getting caught on the right side portion 603.

[0058] At the same time, the burring portion 582 (see FIG. 8) provided on the left fixing portion 520 of the first frame 5 is inserted from the receiving portion 680 into the guide groove 68 of the left protruding wall 62 of the second frame 6. As described above, the receiving portion 680 of the guide groove 68 also extends to the center in the left-right width direction of the bulging portion 608 of the left side portion 604, and the portion extending rightward from the lower end of the left protruding wall 62 is at least longer than the protruding length of the burring portion 582. This prevents the burring portion 582 from getting caught on the left side portion 604.

[0059] The width of the burring portion 572 that protrudes leftward is greater than the thickness of the right-protruding wall 61, and the width of the burring portion 582 that protrudes rightward is greater than the thickness of the left-protruding wall 62. This allows the burring portions 572, 582 to be reliably inserted into the guide grooves 67, 68. This prevents the burring portions 572, 582 from falling out of the guide grooves 67, 68.

[0060] When the second frame 6 is dropped onto the first frame 5 in this state, the lower surface of the second frame 6 comes into contact with the upper surfaces of the catalyst plates 8A, 8B, and the burring portions 572, 582 come into contact with the upper ends of the first grooves 671, 681 of the guide grooves 67, 68. In addition, the hook portion 542 of the first frame 5, which protrudes upward from between the catalyst plates 8A, 8B, is inserted from below into the slit 641 provided in the bridge plate 64 of the second frame 6.

[0061] In this state, when the second frame 6 is slid forward relative to the first frame 5, the burring portions 572, 582 are guided along the second grooves 672, 682. The burring portions 572, 582 engage with the rear ends of the second grooves 672, 682, respectively, and simultaneously, the engaging protrusions 612, 622 of the right protruding wall 61 and the left protruding wall 62 engage with the corresponding engaging holes 512, 522 of the right fixing portion 510 and the left fixing portion 520, respectively. Furthermore, the rear end of the slit 641 slips into and engages with the inside of the hook portion 542 (between the hook portion 542 and the protruding piece 541). This completes the forward sliding of the second frame 6. At this time, the left surface of the right support wall 51 overlaps with the right surface of the right protruding wall 61, and the right surface of the left support wall 52 overlaps with the left surface of the left protruding wall 62.

[0062] In this manner, with the catalyst plates 8A, 8B sandwiched between the first frame 5 and the second frame 6, the second frame 6 is fixed to the first frame 5, and the fixing member 20 is attached to the catalyst plates 8. In this state, the front support wall 55 of the first frame 5 abuts against the front surfaces of the catalyst plates 8A, 8B. The rear support wall 56 of the first frame 5 and the locking piece 653 of the second frame 6 abut against the rear surfaces of the catalyst plates 8A, 8B. This allows the catalyst plates 8A, 8B to be correctly positioned between the first frame 5 and the second frame 6 in the front-to-rear and left-to-right directions. Therefore, the catalyst plates 8A, 8B are held in a precisely positioned state between the first frame 5 and the second frame 6.

[0063] Furthermore, the bridge plate 54 of the first frame 5 is positioned to contact both catalyst plates 8A and 8B, covering the surfaces of the catalyst plates 8A and 8B that come into contact with each other. Furthermore, the bridge plate 64 of the second frame 6 is also positioned to contact both catalyst plates 8A and 8B, covering the surfaces of the catalyst plates 8A and 8B that come into contact with each other from the side opposite the first frame 5. This allows the surfaces of the catalyst plates 8A and 8B that come into contact with each other to be covered from both sides in the thickness direction of the catalyst plates 8A and 8B. Therefore, with the catalyst plate 8 with the fixing member 20 attached attached to the duct body 4, the grill device 1 can prevent combustion exhaust from inside the grill chamber 2 from being discharged without passing through the holes in the catalyst plates 8A and 8B.

[0064] In addition, the claw portion 540 and the slit 641 allow the bridge plate 54 of the first frame 5 and the bridge plate 64 of the second frame 6 to be connected to each other, so that the catalyst plates 8A and 8B can be well supported even at the boundary between the bridge plates 54 and 64 and the catalyst plates 8A and 8B.

[0065] 4 to 6, an example of a method for attaching the catalyst plate 8 to the duct body 4 will be described. For ease of explanation, when the fixing member 20 is attached to the catalyst plate 8, the surface on the first frame 5 side will be referred to as the front surface of the catalyst plate 8, and the surface on the second frame 6 side will be referred to as the rear surface of the catalyst plate 8.

[0066] 5 and 6, first, with the fixing member 20 attached to the catalyst plate 8, the catalyst plate 8 is inserted into the inside of the duct front member 41. As described above, the duct front member 41 is roughly inverted U-shaped and opens downward when viewed from the front, so the front, rear, and bottom sides of the duct front member 41 are wide open. This makes it easy to insert the catalyst plate 8 into the inside of the duct front member 41 while checking the orientation of the catalyst plate 8.

[0067] Next, with the front surface of the catalyst plate 8 inserted inside the duct front member 41 tilted diagonally downward, a pair of locking ribs 513 provided on the right support wall 51 of the fixing member 20 are inserted into and locked into a pair of locking slits 442 provided in the right wall 44 of the duct front member 41. Furthermore, a pair of locking ribs 523 (see FIG. 6) provided on the left support wall 52 of the fixing member 20 are inserted into and locked into a pair of locking slits 452 provided in the left wall 45 of the duct front member 41.

[0068] At this time, the burring hole 57 formed in the right support wall 51 of the fixing member 20 is aligned with the fixing hole 441 formed in the right wall 44 of the duct front member 41. The burring hole 58 formed in the left support wall 52 of the fixing member 20 is aligned with the fixing hole 451 formed in the left wall 45 of the duct front member 41. Then, a screw 92 is inserted from the right into the fixing hole 441 of the right wall 44 and fastened to the burring hole 57 of the right support wall 51. Furthermore, a screw 92 is inserted from the left into the fixing hole 451 of the left wall 45 and fastened to the burring hole 58 of the left support wall 52. In this way, the catalyst plate 8 can be easily attached in the above-described inclined position via the fixing member 20 inside the duct front member 41. Then, the duct rear member 42 is attached to the duct front member 41 from the rear, thereby completing the assembly of the duct main body 4 (see FIG. 4).

[0069] As described above, burring holes 57, 58 are formed in the right support wall 51 and the left support wall 52 of the first frame 5, and the duct body 4 and the first frame 5 are fixed with screws 92, 92. In contrast, the second frame 6 is not fixed to the duct body 4 with screws, but is fixed to the first frame 5 by engaging the engaging protrusions 612, 622 formed on the right protruding wall 61 and the left protruding wall 62 with the engaging holes 512, 522 formed in the right support wall 51 and the left support wall 52 of the first frame 5.

[0070] The reason for this is that if the second frame 6 were fixed to the duct body 4 with screws, the second frame 6 would rotate when the screws were tightened, which could result in a gap between the catalyst plate 8 and the second frame 6. In this embodiment, the fixing structure described above makes it easy to fix the first frame 5 and second frame 6 in the assembled state inside the duct body 4, and also allows the catalyst plate 8 to be attached with high precision.

[0071] The flow of combustion exhaust gas within exhaust duct 10 will be described with reference to Figure 13. The combustion exhaust gas that flows into exhaust duct 10 from inside grill chamber 2 via communication port 9 flows directly below combustion surface 75 of afterburner 7. Afterburner 7 burns and eliminates oily smoke contained in the combustion exhaust gas. The combustion exhaust gas that flows rearward directly below combustion surface 75 of afterburner 7 is then pushed out into duct body 4 and quickly diffuses vertically.

[0072] The catalyst plate 8 is supported in the duct body 4 in an inclined position with its front surface facing diagonally downward. This allows the front surface of the catalyst plate 8 to face the combustion exhaust flowing diagonally upward from the combustion surface 75 of the afterburner 7. This allows the combustion exhaust to pass smoothly through the porous interior of the catalyst plate 8, preventing the grill apparatus 1 from excessively increasing exhaust resistance within the exhaust duct 10.

[0073] The catalyst plate 8 is then heated and activated by the heat of combustion from the afterburner 7. Within the duct body 4, the combustion exhaust diffuses vertically and comes into uniform contact with the catalyst plate 8. As the combustion exhaust passes through the catalyst plate 8, the oily smoke in the combustion exhaust is oxidized, making it odorless and smokeless. The combustion exhaust that has passed through the catalyst plate 8 and become odorless and smokeless is then discharged out of the exhaust duct 10 through the exhaust port 49.

[0074] In this exhaust duct 10, the catalyst plate 8 is supported in the above-mentioned inclined position within the duct body 4. This allows the grill device 1 to bring the front surface of the catalyst plate 8 close to the combustion surface 75, while facing the combustion surface 75. This allows the grill device 1 to efficiently heat the catalyst plate 8 using the combustion heat of the afterburner 7, further improving the oily smoke dissipation effect of the catalyst plate 8.

[0075] In the above description, the grill device 1 is an example of a "cooking device" of the present invention. The main body frame 50 of the first frame 5 is an example of a "first main body" of the present invention. The main body frame 60 of the second frame 6 is an example of a "second main body" of the present invention. The opening 53 is an example of a "first opening" of the present invention. The opening 63 is an example of a "second opening" of the present invention. The right fixing portion 510 and the left fixing portion 520 are an example of a "fixing portion" of the present invention. The pair of locking ribs 513 and the pair of locking ribs 523 are an example of a "protrusion" of the present invention. The pair of locking slits 442 are an example of an "insertion portion" of the present invention. The catalyst plate 8A is an example of a "first catalyst plate" of the present invention, and the catalyst plate 8B is an example of a "second catalyst plate" of the present invention. The bridge plate 54 is an example of a "first cover" of the present invention, and the bridge plate 64 is an example of a "second cover" of the present invention. The claw portion 540 is an example of a "claw portion" of the present invention. The slit 641 provided in the connecting plate 64 of the second frame 6 is an example of the "slit" of the present invention. The right wall 44 and the left wall 45 of the duct body 4 are an example of the "wall portions on both the left and right sides of the exhaust duct" of the present invention.

[0076] As described above, the grill device 1 of this embodiment includes an exhaust duct 10 that discharges combustion exhaust gas flowing from inside the grill chamber 2 to the outside of the grill chamber 2. A rectangular catalyst plate 8 is fixed inside the exhaust duct 10 by a fixing member 20. Assuming that the thickness direction of the catalyst plate 8 is the up-down direction, the fixing member 20 includes a first frame 5 and a second frame 6. The first frame 5 is attached from below the catalyst plate 8. The second frame 6 is attached from above the catalyst plate 8. The fixing member 20 supports the catalyst plate 8 on the inside when the first frame 5 and the second frame 6 are combined with each other. The first frame 5 includes a main frame 50, a front support wall 55, a rear support wall 56, a right support wall 51, and a left support wall 52. The main frame 50 supports the catalyst plate 8 from below and has an opening 53 facing the catalyst plate 8. The front support wall 55 and the rear support wall 56 protrude upward from both the front and rear ends of the main body frame 50 and support the front and rear faces of the catalyst plate 8 from both the front and rear sides, respectively. The right support wall 51 and the left support wall 52 protrude upward from both the left and right ends of the main body frame 50 and support the right and left faces of the catalyst plate 8 from both the left and right sides, respectively. The second frame 6 includes a main body frame 60, a right protruding wall 61, and a left protruding wall 62. The main body frame 60 supports the catalyst plate 8 from above and has an opening 63 that faces the opening 53 of the first frame 5 with the catalyst plate 8 interposed between them. The right protruding wall 61 and the left protruding wall 62 protrude upward from both the left and right ends of the main body frame 60.

[0077] The right support wall 51 and the left support wall 52 of the first frame 5 include a right fixing portion 510 and a left fixing portion 520. The right fixing portion 510 and the left fixing portion 520 protrude further upward than the upper surface of the catalyst plate 8. The right fixing portion 510 includes a burring hole 57 and an engagement hole 512. The burring hole 57 includes a screw hole 571 and a burring portion 572. The screw hole 571 is fastened with a screw 92 to a fixing hole 441 provided in the exhaust duct 10. The burring portion 572 protrudes leftward from the inner peripheral edge of the screw hole 571. The engagement hole 512 is provided rearward of the burring hole 57. Like the right fixing portion 510, the left fixing portion 520 also includes a burring hole 58 and an engagement hole 522.

[0078] The right protruding wall 61 and the left protruding wall 62 are configured to overlap the inner surfaces of the right support wall 51 and the left support wall 52, respectively, when the first frame 5 and the second frame 6 are combined with each other. The right protruding wall 61 has a guide groove 67 and an engaging protrusion 612. The left protruding wall 62 has a guide groove 68 and an engaging protrusion 622. The guide groove 67 of the right protruding wall 61 has a receiving portion 670, a first groove 671, and a second groove 672. The receiving portion 670 opens downward and receives, from below, the burring portions 572, 582 provided in the burring holes 57, 58 of the right fixing portion 510 and the left fixing portion 520 of the first frame 5. The first groove 671 extends upward from the receiving portion 670. The second groove 672 extends rearward from the upper end of the first groove 671. Like the guide groove 67 of the right protruding wall 61, the guide groove 68 of the left protruding wall 62 also has a receiving portion 680, a first groove 681, and a second groove 682. In the right protruding wall 61, the engagement protrusion 612 is provided rearward of the guide groove 67 at a position corresponding to the engagement hole 512 of the right fixed part 510, and protrudes to the right. In the left protruding wall 62, the engagement protrusion 622 is provided rearward of the guide groove 68 at a position corresponding to the engagement hole 522 of the left fixed part 520, and protrudes to the left.

[0079] With the catalyst plate 8 placed above the first frame 5, the second frame 6 is aligned so that the positions of the receiving portions 670, 680 of the guide grooves 67, 68 coincide with the positions of the burring portions 572, 582. Then, after being dropped onto the catalyst plate 8 side by the burring portions 572, 582 and the guide grooves 67, 68, the second frame 6 is guided to slide forward.

[0080] When the second frame 6 has completely slid forward, the burring portions 572, 582 engage with the rear ends of the peripheral edges of the second grooves 672, 682. At the same time, the engaging protrusions 612, 622 of the right protruding wall 61 and the left protruding wall 62 engage with the corresponding engaging holes 512 of the right fixing part 510 and the left fixing part 520, respectively.

[0081] As a result, the grill device 1 can easily attach the fixing member 20 to the catalyst plate 8 by simply aligning the second frame 6 with the first frame 5 on which the catalyst plate 8 is placed and dropping it onto the catalyst plate 8 side, and then sliding the second frame 6 forward.

[0082] The present invention is not limited to the above embodiment, and various modifications are possible. The above embodiment is a grill device 1, but the present invention can also be applied to any cooking device equipped with a grill chamber 2, such as a table stove or a built-in stove.

[0083] In the above embodiment, as shown in FIG. 7, the claw portion 540 is provided on the bridge plate 54 of the first frame 5, and the slit 641 is provided on the bridge plate 64 of the second frame 6. However, the positional relationship between the claw portion and the slit may be reversed. For example, as shown in FIG. 14 (modified example) of a fixing member 200, the bridge plate 64 of the second frame 600 is provided with a claw portion 840, and the bridge plate 54 of the first frame 500 is provided with a slit 741. The claw portion 840 includes a protruding piece 841 and a hook portion 842. The protruding piece 841 protrudes downward from the right end of the bridge plate 64. The hook portion 842 bends forward from the lower end of the protruding piece 841. In other words, it bends in the opposite direction to the extension direction of the second grooves 672, 682 of the guide grooves 67, 68.

[0084] In this configuration, when the second frame 600 is placed on the first frame 500 with the catalyst plate 8 sandwiched therebetween, the claw portions 540 are inserted from above into the slits 741. Then, by sliding the second frame 600 forward, the peripheral edge of the slit 741 can be inserted inside the hook portions 842, as in the above embodiment.

[0085] In the right fixing portion 510 of the right support wall 51 of the first frame 5, the engagement hole 512 is provided rearward of the burring hole 57 (see FIG. 8), but it may be provided forward of the burring hole 57. The same applies to the engagement hole 522 provided in the left fixing portion 520 of the left support wall 52. In this case, the position of the engagement protrusion 612 provided in the right protruding wall 61 of the second frame 6 and the position of the engagement protrusion 622 provided in the left protruding wall 62 may be aligned with the positions of the corresponding engagement holes 512, 522, respectively.

[0086] 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.

[0087] In the above embodiment, the catalyst plate 8 is attached to the fixing member 20 and then attached to the duct body 4, but the attachment structure to the duct body 4 may be a structure other than that of the above embodiment.

[0088] The catalyst plate 8 is rectangular, but may have other shapes. The catalyst plate 8 is made up of two catalyst plates 8A and 8B, but may also be made up of one or more plates. [Explanation of symbols]

[0089] 1 Grilling device 2 Grill compartment 5 First frame 6 Second Frame 8 Catalyst Plate 8A, 8B Catalyst plate 10 Exhaust duct 20 Fixing member 51 Right support wall 52 Left support wall 53 Opening 54 Transfer board 55 Front support wall 56 Rear support wall 57,58 Burring holes 60 Main frame 61 Right protruding wall 62 Left protruding wall 63 Opening 64 Transfer board 67,68 Guide groove 442,452 Retaining slit 510 Right fixed part 512 Engagement hole 513 Locking rib 520 Left fixed part 522 engagement hole 523 Locking rib 540 Claw 571 screw holes 572 Burring Department 581 screw holes 582 Burring Department 612 Engagement protrusion 622 Engagement protrusion 641 Slit 670 Reception Department 671 First groove 672 2nd groove 680 Reception Department 681 First groove 682 2nd groove

Claims

1. A cooking device having an exhaust duct that discharges combustion exhaust gas flowing from a grill chamber to the outside of the grill chamber, and a catalyst plate fixed in the exhaust duct by a fixing member, Assuming that the thickness direction of the catalyst plate is the up-down direction, The fixing member is a first frame attached to the lower side of the catalyst plate; a second frame attached to the upper side of the catalyst plate; Equipped with The catalyst plate is supported on the inside when the first frame and the second frame are combined with each other, The first frame is a first body portion that supports the catalyst plate from below and has a first opening that faces the catalyst plate; a front support wall and a rear support wall that protrude upward from both front and rear end portions of the first main body portion and support a front surface and a rear surface of the catalyst plate from both sides in the front-rear direction, respectively; a right support wall and a left support wall that protrude upward from both left and right end portions of the first main body portion and support the right and left surfaces of the catalyst plate from both sides in the left and right direction, respectively; Equipped with The second frame is a second body portion that supports the catalyst plate from above and has a second opening that faces the first opening with the catalyst plate interposed therebetween; a right protruding wall and a left protruding wall protruding upward from both left and right end portions of the second main body portion; Equipped with the right support wall and the left support wall each include a fixing portion that protrudes above an upper surface of the catalyst plate, The fixing portion is a burring hole having a screw hole to be fastened with a screw to a duct-side fixing hole provided in the exhaust duct, and a burring portion protruding from an inner peripheral edge of the screw hole toward a center in the left-right direction; an engagement hole provided on one side or the other side of the burring hole in the front-rear direction; Equipped with The right protruding wall and the left protruding wall are The first frame and the second frame are configured to overlap with the inner surfaces of the right support wall and the left support wall when the first frame and the second frame are combined with each other, a guide groove including: a receiving portion that opens downward and receives, from below, the burring portion provided in the burring hole of each of the fixing portions of the right support wall and the left support wall; a first groove portion that extends upward from the receiving portion; and a second groove portion that extends from an upper end of the first groove portion to the one side in the front-rear direction; an engaging protrusion that is provided on the one side or the other side of the guide groove in the front-rear direction at a position corresponding to the engaging hole of the fixing portion and that protrudes outward in the left-right direction; Each of them has With the catalyst plate disposed above the first frame, the second frame is positioned so that the position of the receiving portion of the guide groove coincides with the position of the burring portion, and is then dropped into the catalyst plate by the burring portion and the guide groove, and is guided to slide toward the other side in the front-rear direction, When the second frame has completely slid to the other side, the burring portion engages with the end portion on one side in the front-rear direction of the second groove portion, and the engaging protrusions of the right protruding wall and the left protruding wall engage with the engaging holes of the corresponding fixing portions, respectively. A heating and cooking device characterized by the above.

2. the receiving portion extends to the second body portion; The protruding width of the burring portion is greater than the thickness width of each of the right protruding wall and the left protruding wall. The heating and cooking device according to claim 1 .

3. The fixing portion is provided with a protruding portion that protrudes outward in the left-right direction, The exhaust duct has wall portions on both the left and right sides each having an insertion portion into which the protrusion can be inserted. The heating and cooking device according to claim 1 .

4. The catalyst plate includes at least a first catalyst plate and a second catalyst plate arranged side by side in the left-right direction, the first main body portion includes a first cover portion that covers the boundary between the first catalyst plate and the second catalyst plate from below, the second main body portion includes a second cover portion that covers the boundary between the first catalyst plate and the second catalyst plate from above, The first cover portion is provided with a claw portion that protrudes toward the catalyst plate and has a tip portion that is bent in the same direction as the extension direction of the second groove portion, The second cover portion is provided with a slit into which the claw portion can be inserted, When the second frame is dropped into the catalyst plate side by the burring portion and the guide groove, the claw portion is inserted into the slit, When the second frame slides to the other side in the front-rear direction, the peripheral edge of the slit slides into the inside of the bent tip end of the claw portion. The heating and cooking device according to claim 1 .

5. The catalyst plate includes at least a first catalyst plate and a second catalyst plate arranged side by side in the left-right direction, the first main body portion includes a first cover portion that covers the boundary between the first catalyst plate and the second catalyst plate from below, the second main body portion includes a second cover portion that covers the boundary between the first catalyst plate and the second catalyst plate from above, The second cover portion is provided with a claw portion that protrudes toward the catalyst plate and has a tip portion that is bent in a direction opposite to the extension direction of the second groove portion, The first cover portion is provided with a slit into which the claw portion can be inserted, When the second frame is dropped into the catalyst plate side by the burring portion and the guide groove, the claw portion is inserted into the slit, When the second frame slides to the other side in the front-rear direction, the peripheral edge of the slit slides into the inside of the bent tip end of the claw portion. The heating and cooking device according to claim 1 .

Images