grill

Abstract

To prevent defective ignition or flameout of a burner while preventing overboiling to a venturi part of the burner and a peripheral member of the burner, and to burn the burner stably.SOLUTION: In a grill 2 which includes a lateral cover 60 covering an air intake 24 opening to a lateral wall 203 from the outside of a grill chamber 20, and a burner 7, the lateral cover 60 has a rear opening part 66 opening backward, and the burner 7 has a venturi part 71 which is adjacent to a rear opening part 66 of the lateral cover 60, laterally extends outward, and has an opening in which a gas nozzle is inserted open on an outer end, a boiling-over cover 700 covering the venturi part 71 from above is provided at the back of the lateral cover 60. The boiling-over cover 700 is provided so that a lower space of the boiling-over cover 700 becomes wider as it laterally moves away from the opening 72 of the venturi part 71 outward.SELECTED DRAWING: Figure 5

Description

[Technical field]

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

[0002] Conventionally, grills that are incorporated into cooking appliances have been known that have an air intake opening on the side wall of the grill chamber. In this type of grill, when the burner is burned, the inside of the grill chamber becomes negative pressure due to the draft effect caused by the exhaust of the combustion exhaust gas, and air is taken into the grill chamber through the air intake. As a result, for example, in a grill with a lower burner, the combustion exhaust gas ejected from the lower burner can be blown far into the grill chamber by secondary air. Also, for example, in a grill with an afterburner that increases the draft effect in the exhaust passage, the oil smoke and odorous components contained in the combustion exhaust gas flowing from the inside of the grill chamber into the exhaust passage can be burned by the afterburner, and the combustion exhaust gas can be smoothly discharged to the outside from the exhaust port of the exhaust passage.

[0003] In a grill having an air intake in the side wall of the grill chamber as described above, when the draft effect is not sufficient, it is necessary to suppress the leakage of combustion exhaust gas from the air intake into the cooking device body. For this reason, a grill has been proposed that is provided with a side cover on the side of the grill chamber that opens downward and backward and covers the air intake from the outside (for example, Patent Document 1). With this grill, when the draft effect is occurring, air can be guided from below the side cover to the air intake. Also, when the draft effect is not sufficient, the combustion exhaust gas can be discharged behind the side cover, which has less impact on surrounding members. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2012-254245 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, when a burner is mounted on a grill, a venturi portion of the burner is generally extended outwardly or rearwardly from the rear portion of the grill, and a gas nozzle is inserted into the opening of the venturi portion.

[0006] On the other hand, the cooking device has a grill opening on the top plate facing the exhaust port of the exhaust passage, so overflow enters the cooking device body through the opening. As a result, overflow splashes onto the venturi section, causing corrosion and clogging of the burner. In addition, since various valves, harnesses, and other peripheral components are arranged around the venturi section, if overflow splashes onto these components, they may malfunction or the harnesses may become stuck. For this reason, it is desirable to provide a overflow cover that covers the venturi section from above.

[0007] However, when a side cover that opens backward is provided on the side of the grill chamber as described above, and a boil-over cover is provided to cover the upper part of the venturi part extending outward from the rear part of the grill, the boil-over cover is disposed adjacent to the rear of the side cover. Therefore, in winter, when the indoor temperature is low and the draft effect is difficult to apply, the combustion exhaust gas flowing backward from the rear opening of the side cover remains in the space below the boil-over cover, and the combustion exhaust gas is easily taken into the burner from the opening of the venturi part. When the combustion exhaust gas is taken into the burner in this way, the proportion of primary air taken into the burner decreases, resulting in a shortage of oxygen. As a result, the flame lift occurs, or a part of the flame is blown away, causing a decrease in the output of the thermocouple that detects the flame, and ignition failure or mid-way misfire is likely to occur. In particular, when a large cooking container such as a cocotte or a Dutch oven is stored in the grill chamber and cooked, the cooking container is placed near the air intake, and the flow path of the combustion exhaust gas from the air intake to the exhaust passage is blocked by the cooking container. This increases the amount of combustion exhaust gas leaking into the side cover from the air intake, making the above problem more pronounced.

[0008] The present invention solves the above-mentioned problems, and the object of the present invention is to prevent the burner from failing to ignite or misfiring midway through, while preventing the splashing of boil-over onto the venturi portion of the burner or surrounding parts, in a grill that has a side cover on the side of the grill chamber that covers an air intake opening into the side wall, thereby ensuring stable burner combustion. [Means for solving the problem]

[0009] According to the present invention, A grill chamber is housed in the cooking device body and has an air intake opening in a side wall; A side cover that covers the air intake opening in the side wall from the outside of the grill chamber; a burner; The side cover has a rear opening that opens rearward, The burner is a grill having a venturi portion extending outwardly adjacent to the rear opening of the side cover and having an opening at an outer end through which a gas nozzle is inserted, A boil-over cover that covers the venturi section from above is provided behind the side cover, A grill is provided in which the boil-over cover is arranged so that the space below the boil-over cover becomes wider as it moves outwardly away from the opening of the venturi portion.

[0010] According to the above grill, a boil-over cover is provided that covers the venturi portion of the burner from above, so that even if boil-over enters the cooking appliance body through the opening in the top plate, it is possible to prevent the boil-over from splashing onto the venturi portion of the burner or surrounding components of the burner.

[0011] On the other hand, as described above, when a boil-over cover is provided adjacent to the rear of the side cover, the combustion exhaust gas flowing rearward from the rear opening of the side cover tends to accumulate below the boil-over cover, making it easier for the combustion exhaust gas to be drawn into the burner.

[0012] However, in the above grill, the boil-over cover is provided so that the space below the boil-over cover becomes wider as it moves outward from the opening of the venturi section, so that even if the combustion exhaust gas flows out from the rear opening of the side cover into the space below the boil-over cover, the combustion exhaust gas can be diffused outward from near the opening. Therefore, the combustion exhaust gas is less likely to remain near the opening of the venturi section, and the intake of the combustion exhaust gas into the burner can be reduced. This prevents the burner from burning due to lack of oxygen, and prevents the burner from igniting poorly or from burning out midway, allowing the burner to burn stably.

[0013] Preferably, in the grill, The boil-over cover is disposed within the cooking device body so that gaps are formed between the outer and rear ends of the boil-over cover and the structural walls of the cooking device body.

[0014] According to the above grill, the combustion exhaust gas flowing out into the space below the boil-over cover can be smoothly diffused into the space above the boil-over cover through the gap between the boil-over cover and the structural wall of the cooking appliance body.

[0015] Preferably, in the grill, An exhaust passage extending from the rear end of the grill chamber to the rear upper portion is provided, The burner is provided in the exhaust passage and has an afterburner for burning oily smoke and odorous components in the combustion exhaust gas.

[0016] According to the above grill, it is possible to prevent the afterburner from failing to ignite or from going out midway, so that the afterburner can burn stably.

[0017] Preferably, in the grill, The burner includes an underfire burner.

[0018] According to the above grill, it is possible to prevent poor ignition or mid-fire flame out of the lower burner, so that the lower burner can burn stably. Effect of the Invention

[0019] As described above, according to the present invention, it is possible to prevent the splattering of boil-over onto the venturi portion of the burner or onto the components surrounding the burner, while preventing the burner from failing to ignite or from misfiring midway, thereby enabling the burner to burn stably. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a schematic perspective view showing a cooking device according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic vertical cross-sectional view showing the cooking device according to the first embodiment of the present invention. [Diagram 3] FIG. 3 is a schematic cross-sectional view showing the cooking device according to the first embodiment of the present invention. [Figure 4] FIG. 4 is a schematic perspective view of a main part showing a side portion of the cooking device according to the first embodiment of the present invention. [Diagram 5] FIG. 5 is a schematic partial perspective view showing a rear portion of the cooking device according to the first embodiment of the present invention. [Figure 6] FIG. 6 is a schematic vertical cross-sectional view showing a cooking device according to the second embodiment of the present invention. [Figure 7] FIG. 7 is a schematic partial perspective view showing a side portion of a lower burner and a grill chamber of a cooking device according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] (Embodiment 1) Hereinafter, a cooking device equipped with a grill according to the present embodiment will be specifically described with reference to the drawings. FIG. 1 is a schematic perspective view showing an example of a cooking device according to the present embodiment, which is applied to a built-in gas stove. The gas stove 1 includes a plurality of stove burners 5 facing upward from a stove opening (not shown) in a top plate 11, and a grill 2 built into a stove body 10, which is the cooking device body. The grill 2 includes a grill chamber 20 in the shape of a substantially rectangular box housed in the stove body 10, and a grill door 21 that covers a front opening 200 of the grill chamber 20 from the front. Cooking utensils such as a grill net (not shown) and a cooking vessel 4 made of metal or ceramic, such as a cocotte or a Dutch oven, are stored in the grill chamber 20. In this specification, the grill door 21 side is the front side, and when the gas stove 1 is viewed from the grill door 21 side, the direction in which the grill door 21 faces the back side of the grill chamber 20 is the front-rear direction, the width direction of the grill chamber 20 is the left-right direction, and the height direction of the grill chamber 20 is the up-down direction.

[0022] At positions near the left and right sides of the lower rear surface of the grill door 21, guide frames 211 are respectively provided extending toward the rear inside the stove body 10. The guide frames 211 are each supported in a state in which they can slide back and forth within the stove body 10, and the grill door 21 is connected and fixed to both front ends of these frames. Therefore, the grill door 21 slides back and forth relative to the front surface 13 of the stove body 10 to open and close.

[0023] As shown in Figures 2 and 3, a narrow connecting plate 212 that protrudes toward the inside of the grill chamber 20 is provided on the lower rear surface of the grill door 21, and a receiving frame 15 for supporting the drip tray 12, a grill rack (not shown), a container support 44, etc. is connected and supported on the upper part of the connecting plate 212.

[0024] The receiving frame 15 has a front end connected to the connecting plate 212, and a rear end supported in a slidable state on the upper surface of the bottom wall 204 of the grill chamber 20. Therefore, the receiving frame 15 is pulled out from inside the grill chamber 20 to the front of the front opening 200 in conjunction with the grill door 21 being opened, and is stored inside the grill chamber 20 in conjunction with the grill door 21 being closed.

[0025] The cooking container 4 has, for example, a flat-bottomed container body 40 that is generally rectangular in plan view and opens upward, and a lid body 41 that is generally rectangular in plan view and covers from above the upper opening of the container body 40. When using the cooking container 44, the container body 40 is stored in the container support 44 in a vertical position with the longitudinal direction being the front-to-rear direction, so that the long side surface of the container body 40 faces the side wall 203 of the grill chamber 20.

[0026] The container support 44 is made of a frame formed by joining multiple metal round bars. The container support 44 is constructed by deforming multiple wires into a predetermined shape according to the shape of the side and bottom of the cooking container 4 and joining them at predetermined positions, so that it can horizontally support the cooking container 4 at a predetermined position. Specifically, the container support 44 has left and right lower support frames that extend in the front-rear direction and abut against the bottom surface of the container body 40 to support the container body 40 from below, and an upper frame body that is generally rectangular and annular in plan view and is joined to the upper ends of the left and right lower support frames.

[0027] An exhaust duct 30 that constitutes an exhaust passage 300 that discharges combustion exhaust gas from the grill chamber 20 to the outside is connected to the rear wall 205 of the grill chamber 20. The exhaust duct 30 extends obliquely upward from the upper part of the rear wall 205 of the grill chamber 20 toward the underside of the top plate 11, and an exhaust port 301 at its upper end faces the grill opening 14 opened on the top surface of the top plate 11 from below.

[0028] The grill 2 is equipped with an upper burner 22 disposed along the top wall 202 of the grill chamber 20, left and right lower burners 23 disposed along the left and right side walls 203 of the grill chamber 20, and an afterburner 7 disposed on the bottom wall 31 of the exhaust duct 30 near the rear wall 205 of the grill chamber 20. The left and right lower burners 23 have the same configuration except that they are symmetrical, so the configuration of the lower burner 23 and its surroundings will be mainly described using the right lower burner 23 as an example.

[0029] The upper burner 22 is a surface combustion type ceramic burner whose underside is made of a ceramic combustion plate, and a large number of flame holes 220 are opened over almost the entire underside of the plate. Therefore, when the upper burner 22 is ignited, a flame is formed over the entire underside of the plate, and combustion exhaust gas and radiant heat are released downward inside the grill chamber 20 to heat the cooking vessel 4 from above. The upper burner 22 has a venturi section 221 extending outward to the right from the upper wall 202 of the grill chamber 20 at its rear. Although not shown, a gas nozzle is inserted into the opening that opens at the outer end of the venturi section 221. Therefore, when fuel gas is ejected from the gas nozzle toward the opening of the venturi section 221, the fuel gas is sucked into the venturi section 221 together with the air around the opening, and a mixture of fuel gas and primary air is generated and supplied to the flame hole 220.

[0030] The lower burner 23 is a straight tube body made of two stainless steel trough-shaped bodies stacked one on top of the other, and a plurality of flame holes 230 are formed on the side end surface of the tube body on the inner side of the grill chamber 20. The flame holes 230 are open horizontally toward the inside of the grill chamber 20. The lower burner 23 is arranged so that the flame holes 230 face the side of the container body 40 of the cooking container 4 when the cooking container 4 is stored in the grill chamber 20. Therefore, when the lower burner 23 is ignited, a flame is formed in the flame holes 230, and the combustion exhaust gas and radiant heat are released toward the center of the left and right of the grill chamber 20 and downward, heating the cooking container 4 from the side. The lower burner 23 has a venturi portion 231 (see FIG. 4) extending backward from the rear wall 205 of the grill chamber 20 at its rear part. Although not shown, a gas nozzle is inserted into the opening at the rear end of the venturi portion 231. Therefore, when fuel gas is ejected from the gas nozzle toward the opening of the venturi section 231, the fuel gas is sucked into the venturi section 231 together with the air surrounding the opening, and a mixture of fuel gas and primary air is generated and supplied to the burner hole 230.

[0031] 2 and 3, a generally rectangular air intake 24 elongated in the front-rear direction is provided in the generally vertical center of the side wall 203. Therefore, secondary air for combustion in the lower burner 23 is taken into the grill chamber 20 from outside the grill chamber 20 through the air intake 24 by the draft effect generated when the combustion exhaust gas in the grill chamber 20 is exhausted to the outside of the gas stove 1 through the exhaust passage 300. A secondary air guide plate 26 is provided above the air intake 24 on the inner surface of the side wall 203 to guide the secondary air taken into the grill chamber 20 from the air intake 24 into the inside of the grill chamber 20 through the periphery of the flame hole 230 of the lower burner 23.

[0032] The secondary air guide plate 26 is inclined downward from the upper edge of the air intake 24 toward the inside of the grill chamber 20, and protrudes further inward into the grill chamber 20 than the position of the flame holes 230 of the lower burner 23. Therefore, the secondary air taken into the grill chamber 20 from the air intake 24 is guided along the lower surface of the secondary air guide plate 26 to above the lower burner 23, and is further guided from above the flame holes 230 to the lower center of the left and right of the grill chamber 20. Then, for example, when a grill net is stored in the grill chamber 20, the flame formed at the flame holes 230 rides on the flow of this secondary air and extends toward the center of the left and right of the grill chamber 20, causing the combustion exhaust gas to reach the center of the left and right of the grill chamber 20.

[0033] The afterburner 7 is a surface combustion type burner whose upper surface is made of a metal combustion plate, and a large number of flame holes 70 are formed over almost the entire upper surface of the plate. Therefore, when the afterburner 7 is ignited, a flame is formed over the entire upper surface of the plate, and the combustion exhaust gas and radiant heat are emitted upward in the exhaust passage 300, and the oily smoke and odorous components contained in the combustion exhaust gas flowing from the grill chamber 20 into the exhaust passage 300 are burned. As shown in Figures 2, 4 and 5, the afterburner 7 has a venturi portion 71 that extends almost horizontally from below the bottom wall 31 of the exhaust duct 30 to the right outside. Although not shown, a gas nozzle is inserted into an opening 72 that opens at the outer end of the venturi portion 71. Therefore, when fuel gas is ejected from the gas nozzle toward the opening 72 of the venturi section 71, the fuel gas is sucked into the venturi section 71 together with the air surrounding the opening 72, and a mixture of fuel gas and primary air is generated and supplied to the burner hole 70.

[0034] Provided near the flame holes 220, 230 of the upper and lower burners 22, 23 are spark plugs 51, 52 that discharge sparks toward the periphery of the corresponding flame holes 220, 230 when a high voltage is applied from an igniter (not shown), and thermocouples 53, 54 as flame detection sensors that detect the presence or absence of a flame at the corresponding flame holes 220, 230. Also, similarly, spark plugs 55 and thermocouples 56 are provided near the flame holes 70 on both the left and right ends of the upper surface of the afterburner 7. Also, an internal temperature sensor 57 that detects the temperature inside the grill chamber 20 is provided below the left and right center of the rear wall 205 inside the grill chamber 20.

[0035] As shown in Figures 3 to 5, a metal side cover 60 is disposed outside the right side wall 203 of the grill chamber 20, covering the entire air intake 24 opening in the right side wall 203 at a predetermined distance from above, the front, and the right outer side, and opening downward and rearward. In Figure 5, the upper burner 22 is omitted to avoid complication, and the members below the boil-over cover 700 are also shown to show the relationship with the afterburner 7, the side cover 60, and the boil-over cover 700 described later.

[0036] The side cover 60 has an upper wall portion 61 extending outward from the outer surface of the right side wall 203 above the air intake 24, an outer wall portion 62 hanging down from the outer end of the upper wall portion 61, and a front wall portion 63 bending and extending inward from the front end of the outer wall portion 62. Therefore, when the draft effect occurs, air from inside the gas stove 1 flows into the side cover 60 mainly from the lower opening 65 of the side cover 60, and an air flow path from below toward the air intake 24 is formed in the side cover 60.

[0037] On the other hand, when the temperature inside the grill chamber 20 is low and the pressure inside the grill chamber 20 is high, such as at the beginning of ignition, the draft effect is not sufficient, and the combustion exhaust gas leaks from the air intake 24 into the side cover 60. However, since the front, upper, and right outer sides of the side cover 60 are closed, the combustion exhaust gas leaking from the air intake 24 into the side cover 60 is mainly guided to the rear opening 66 and flows out rearward from the rear opening 66.

[0038] Behind the side cover 60, the venturi portion 71 of the afterburner 7 described above extends toward the right outside. A metal plate cover 700 formed in a predetermined shape is disposed above the venturi portion 71 of the afterburner 7 so as to cover the venturi portion 71 from above. The overflow cover 700 has a side flange portion 701 located on the left side when the overflow cover 700 is disposed in the stove body 10, a cover body portion 702 extending from the right outer end of the side flange portion 701 toward the right outside, a rear flange portion 703 extending rearward from the rear end of the cover body portion 702 and protruding toward the right outside beyond the right outer end of the cover body portion 702, and a narrow auxiliary cover portion 704 extending forward from the end of the rear flange portion 703 protruding toward the right outside beyond the cover body portion 702.

[0039] When the boil-over cover 700 is disposed in the stove body 10, the side flange portion 701 is placed on a front flange portion extending outward to the right from the right side wall 203 of the grill chamber 20 and a rear flange portion extending outward to the right from the right side wall of the exhaust duct 30. The side flange portion 701 is disposed above the upper wall portion 61 of the side cover 60 so that a front portion of the side flange portion 701 partially overlaps a rear portion of the upper wall portion 61 of the side cover 60 in a side view. For this reason, even if the combustion exhaust gas flows rearward from the rear opening portion 66 of the side cover 60, the combustion exhaust gas is unlikely to diffuse from the front end of the boil-over cover 700 into the space above.

[0040] The cover body 702 of the boil-over cover 700 extends from the side flange 701 to the right outside of the opening 72 that opens at the outer end of the venturi part 71 of the afterburner 7. This ensures that even if boil-over enters from above, it will not splash onto the venturi part 71 or surrounding components (not shown). The cover body 702 is wider than the venturi part 71 and has an inclined surface 702a that is inclined obliquely upward from a position that is substantially opposed to the opening 72 of the venturi part 71 along the extension direction of the venturi part 71 at the front-rear center, a horizontal surface 702b that extends substantially horizontally from the side flange 701 to the right outside in front of the inclined surface 702a, and a connecting surface 702c that connects to the rear flange 703 behind the inclined surface 702a. Therefore, in the vicinity of the opening 72 of the venturi portion 71, the space below the inclined surface 702a of the cover body portion 702 is formed so as to become larger as it moves away from the opening 72 to the right outside in the extension direction of the venturi portion 71. The shape of the boil-over cover 700 can be appropriately changed depending on the structure of the venturi portion 71 of the afterburner 7 and the arrangement of the peripheral members. For example, the horizontal surface 702b, the rear flange portion 703, and the auxiliary cover portion 704 may be omitted. Also, as long as the space below the cover body portion 702 in the extension direction of the venturi portion 71 is formed so as to become wider as it moves away from the opening 72 to the outside, the cover body portion 702 may be formed in a stepped shape. Also, when the venturi portion 71 extends outward so as to be inclined downward, the cover body portion 702 may be formed as a horizontal surface or an inclined surface inclined downward.

[0041] Part of the periphery of the cover body 702 and the sub-cover part 704 is bent upward. This allows a certain amount of boil-over that enters from above to be held by the upper surface of the boil-over cover 700, and reliably prevents the boil-over cover 700 from entering below.

[0042] The boil-over cover 700 is fixed to the stove body 10 by connecting the rear flange portion 703 to the connecting flange portion of the rear wall 105, which is a structural wall of the stove body 10, with a fastening member. The boil-over cover 700 also has a notch at the corner between the side flange portion 701 and the rear flange portion 703 so that a gap G is formed between the boil-over cover 700 and the rear wall 105 of the stove body 10 behind the venturi portion 71 of the afterburner 7 when the boil-over cover 700 is disposed in the stove body 10. The boil-over cover 700 is also formed so that the outer end of the cover body portion 702 of the boil-over cover 700 is separated from the side wall 103, which is a structural wall of the stove body 10, when the boil-over cover 700 is disposed in the stove body 10. Therefore, the space below the boil-over cover 700 and the space above the boil-over cover 700 are connected by gaps G at the rear and sides of the boil-over cover 700.

[0043] Returning to Fig. 1, the operation section 36 formed on the left side of the grill door 21 is provided with a grill switch 17 that has the functions of turning on and off the upper and lower burners 22, 23 and adjusting the heat, and a kangaroo-style operation unit 38 below it. Although not shown, the operation unit 38 is provided with a touch panel type operation switch section and a display section, etc. The operation switch section includes, for example, an auto menu switch for selecting a container cooking mode in which a cooking container 4 containing food to be cooked is placed in the grill chamber 20 and cooked, a cooking selection switch for performing timer cooking with a set cooking time from the container cooking mode or for selecting a cooking type, and a cooking time setting switch for setting the cooking time when timer cooking is performed in the container cooking mode.

[0044] As described above, if the air intake 24 is open in the side wall 203 of the grill chamber 20, when the draft effect is insufficient, the combustion exhaust gas leaks from the air intake 24 into the side cover 60 and mainly flows rearward from the rear opening 66 of the side cover 60. On the other hand, if the venturi part 71 of the afterburner 7 extends from below the exhaust duct 30 to the right outside, adjacent to the rear opening 66 of the side cover 60, the boil-over cover 700, which prevents the boil-over from scattering on the venturi part 71 of the afterburner 7 and surrounding members, is arranged to cover the periphery of the venturi part 71 behind the side cover 60 from above. For this reason, the combustion exhaust gas flowing rearward from the rear opening 66 of the side cover 60 remains in the space below the boil-over cover 700 and is easily taken in by the afterburner 7. As a result, the afterburner 7 becomes oxygen deficient, causing the flame to lift or part of the flame to be blown away, which reduces the output of the thermocouple 56 and tends to cause poor ignition or mid-fire. In particular, the surface combustion type afterburner 7 is prone to unstable flames when it becomes oxygen deficient.

[0045] However, according to this embodiment, the boil-over cover 700 is provided so that the space below the boil-over cover 700 becomes wider as it moves away from the opening 72 of the venturi portion 71 to the right and outward, so that even if the combustion exhaust gas flows out from the rear opening 66 of the side cover 60 into the space below the boil-over cover 700, the combustion exhaust gas is likely to diffuse to the right and outward. Therefore, the combustion exhaust gas is less likely to remain near the opening 72 of the venturi portion 71, and the intake of the combustion exhaust gas into the afterburner 7 can be reduced. This prevents the afterburner 7 from burning due to lack of oxygen, and prevents the afterburner 7 from failing to ignite or from misfiring midway.

[0046] In addition, according to this embodiment, a gap G is formed between the boil-over cover 700 and the side wall 103 and rear wall 105, which are the constituent walls of the stove body 10, on the right outer side and rear of the boil-over cover 700, and the space below the boil-over cover 700 communicates with the space above the boil-over cover 700, so that the combustion exhaust gas that flows into the space below the boil-over cover 700 can be smoothly diffused into the space above the boil-over cover 700 in the stove body 10. This reliably prevents the afterburner 7 from failing to ignite or from misfiring midway. Furthermore, the combustion exhaust gas flows along the underside of the boil-over cover 700 and is diluted as it flows from the space below the boil-over cover 700 to the space above it, which prevents poor ignition or accidental fire in the lower fire burner 23, whose venturi portion 231 extends rearward from the grill chamber 20, and the upper fire burner 22, whose venturi portion 221 is located above the boil-over cover 700.

[0047] Therefore, according to this embodiment, the splashing of boil-over onto the venturi portion 71 of the afterburner 7 or onto the surrounding components of the afterburner 7 is prevented, while misignition or misfire of the afterburner 7 is prevented, thereby enabling the afterburner 7 to burn stably.

[0048] (Embodiment 2) The grill of this embodiment does not have an afterburner, and has a horseshoe-shaped under-fire burner different from that of the first embodiment, but has the same configuration as the first embodiment.

[0049] Fig. 6 is a schematic vertical cross-sectional view of the right half of the gas stove of this embodiment, and Fig. 7 is a schematic partial perspective view showing the side part of the lower burner and the grill. The lower burner 23a of this embodiment is made of a tube body that is approximately U-shaped in plan view, with two straight tubes 235 branching from the venturi part 231a along the left and right side walls 203 of the grill chamber 20. The venturi part 231a of the lower burner 23a is bent outward to the right from the rear wall (not shown) of the grill chamber 20 and extends approximately horizontally, and an opening 232a into which a gas nozzle is inserted is opened at the outer end of the venturi part 231a.

[0050] As in the first embodiment, rectangular air inlets 24 long in the front-rear direction are provided in the approximate vertical center of the left and right side walls 203 of the grill chamber 20. In addition, a secondary air guide plate 26 is provided above the air intakes 24 on the inner surface of the side walls 203, which guides the secondary air taken into the grill chamber 20 from the air intakes 24 to the left-right center of the grill chamber 20 through the periphery of the flame holes 230a of the lower burner 23a. Therefore, the secondary air taken into the grill chamber 20 from the air intakes 24 is guided along the lower surface of the secondary air guide plate 26 to above the lower burner 23a, and further guided from above the flame holes 230a to the left-right center below of the grill chamber 20.

[0051] In addition, a metal side cover 60a is connected to the outside of the right side wall 203 of the grill chamber 20, and is generally inverted L-shaped in cross section in the left-right direction, covering the entire air intake 24 opening in the right side wall 203 at a predetermined distance from above, the front, and the right outer side, and opening downward and backward. Therefore, when the draft effect occurs, air in the gas stove 1 flows into the side cover 60a mainly from the lower opening 65a of the side cover 60a, and a flow path of air from below toward the air intake 24 is formed in the side cover 60a. In addition, if the draft effect is not sufficient, the combustion exhaust gas leaks from the air intake 24 into the side cover 60a, and flows out mainly from the rear opening 66a toward the rear.

[0052] The venturi portion 231a of the lower burner 23a, which extends outward to the right from the grill chamber 20, is adjacent to the rear opening 66a of the side cover 60a. The boil-over cover 800 extends outward to the right from the front of the rear end of the side cover 60a so as to cover the venturi portion 231a of the lower burner 23a from above. This ensures that even if boil-over enters from above, it will not splash onto the venturi portion 231a of the lower burner 23a or surrounding components.

[0053] The boil-over cover 800 has substantially the same structure as that of the embodiment 1. Specifically, when the boil-over cover 800 is disposed in the stove body 10, the boil-over cover 800 has a side flange portion 801 located on the left side, a cover body portion 802 extending outward to the right from the right outer end of the side flange portion 801, a rear flange portion 803 extending rearward from the rear end of the cover body portion 802 and protruding outward to the right beyond the right outer end of the cover body portion 802, and a narrow auxiliary cover portion 804 extending forward from the end of the rear flange portion 803 protruding outward to the right beyond the cover body portion 802.

[0054] The cover body 802, which faces the venturi portion 231a of the lower burner 23a with a certain gap therebetween, extends to the right outside of the opening 232a of the venturi portion 231a of the lower burner 23a. The cover body 802 is wider than the venturi portion 231a, and has an inclined surface 802a that is inclined upward so that the space below the cover body 802 becomes wider as it moves away from the opening 232a of the venturi portion 231a to the right outside at the front-rear center. The cover body 802 also has a horizontal surface 802b that extends almost horizontally from the side flange portion 801 to the right outside in front of the inclined surface 802a, and a connecting surface 802c that connects to the rear flange portion 803 behind the inclined surface 802a.

[0055] Although not shown, similar to embodiment 1, the boil-over cover 800 is configured so that when the boil-over cover 800 is arranged within the stove body 10, a gap of a predetermined size is formed between the boil-over cover 800 and the right side wall 103 and rear wall 105, which are the constituent walls of the stove body 10, on the right outer side and rear side of the boil-over cover 800, respectively.

[0056] According to this embodiment, the boil-over cover 800 is disposed adjacent to the rear of the side cover 60a so as to cover the venturi portion 231a of the lower burner 23a from above, but the space below the cover body portion 802 of the boil-over cover 800 is arranged so as to become wider as it moves away from the opening 232a of the venturi portion 231a of the lower burner 23a to the right outside. Therefore, even if the combustion exhaust gas flows out from the rear opening 66a of the side cover 60a into the space below the boil-over cover 800, the combustion exhaust gas is easily diffused to the right outside. This makes it difficult for the combustion exhaust gas to remain near the opening 232a of the venturi portion 231a of the lower burner 23a, and the intake of the combustion exhaust gas into the lower burner 23a can be reduced. Therefore, oxygen-deficient combustion of the lower burner 23a can be prevented, and poor ignition or mid-fire misfire of the lower burner 23a can be prevented.

[0057] Furthermore, according to this embodiment, gaps are formed on the right outer side and rear of the boil-over cover 800 between the boil-over cover 800 and the side wall 103 and rear wall 105 that are the constituent walls of the stove body 10, so that the combustion exhaust gas that flows out from the rear opening 66a of the side cover 60a into the space below the boil-over cover 800 can be smoothly diffused into the space above the boil-over cover 800 in the stove body 10. This reliably prevents poor ignition or mid-fire misfire of the lower burner 23a.

[0058] Therefore, according to this embodiment, the scattering of boil-over liquid onto the venturi portion 231a of the lower burner 23a or surrounding components can be prevented, while preventing poor ignition or misfire of the lower burner 23a, thereby enabling the lower burner 23a to burn stably.

[0059] (Other embodiments) (1) In the above embodiment, a boil-over cover is provided above the venturi portion of the afterburner or the underburner. However, in the present invention, when the venturi portion of the upper burner is disposed adjacent to the rear opening of the side cover, a boil-over cover may be formed to cover the upper part of the venturi portion of the upper burner.

[0060] (2) In the above embodiment, the side cover is connected to the side wall of the grill chamber. However, in the present invention, as long as the air intake is provided so as to be covered from the outside, the side cover may be connected to the top wall, or may be connected to the side wall or the top wall via another member.

[0061] (3) In the above embodiment, the side covers and the boil-over cover are configured as separate members. However, in the present invention, these members may be configured as a single part. [Explanation of symbols]

[0062] 1 Gas stove 2. Grill 7. Afterburner 10 Stove body 103 Side wall (component wall) 105 Back wall (constituent wall) 20 Grill room 23,23a Lower burner 60 Side cover 66,66a Rear opening 71 Venturi section 231a Venturi section 700,800 Boil-over cover G Gap

Claims

1. A grill chamber is housed in the cooking device body and has an air intake opening in a side wall; A side cover that covers the air intake opening in the side wall from the outside of the grill chamber; a burner; The side cover has a rear opening that opens rearward, The burner is a grill having a venturi portion extending outwardly adjacent to the rear opening of the side cover and having an opening at an outer end through which a gas nozzle is inserted, A boil-over cover that covers the venturi section from above is provided behind the side cover, The boil-over cover is provided so that the space below the boil-over cover becomes wider as it moves outward from the opening of the venturi portion.

2. 2. The grill of claim 1, The boil-over cover is disposed in the cooking device body so that gaps are formed between the outer and rear ends of the boil-over cover and the structural walls of the cooking device body.

3. 3. The grill of claim 1 or 2, An exhaust passage extending from the rear end of the grill chamber to the rear upper portion is provided, The burner is a grill that is provided in the exhaust passage and has an afterburner that burns oily smoke and odorous components in the combustion exhaust gas.

4. A grill according to any one of claims 1 to 3, The burner is a grill having a bottom burner.

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