Cooking device

Abstract

To provide a heating cooker in which a plurality of burner units B are arranged side by side in the Y-axis direction, each of the burner units B including a gas burner 2 having a plurality of flame holes 22 opened upward along the X-axis direction and a hot plate 3 arranged above the gas burner 2 and having a cross-sectional shape protruding upward, wherein adhesion of oil and fat or the like to the flame holes 22 of the gas burner 2 can be suppressed even if the interval between the burner units B and B is narrowed.SOLUTION: A partition plate 7 is erected between the burner units B, B. The length of the partition plate 7 in the X-axis direction is set so as to protrude to one side and the other side in the X-axis direction from the range in the X-axis direction where the flame holes 22 of the gas burner 2 are formed. The lower end of the partition plate 7 is positioned below the flame hole 22 of the gas burner 2, and the upper end of the partition plate 7 is positioned above the side edge on both sides in the Y-axis direction which is the lowermost part of the hot plate 3.SELECTED DRAWING: Figure 3

Description

[Technical Field]

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

[0002] Conventionally, in this type of heating cooker, two orthogonal horizontal directions are defined as the X-axis direction and the Y-axis direction, and a plurality of burner units are arranged side by side in the Y-axis direction, each burner comprising a gas burner with a plurality of upward-opening flame holes formed along the X-axis direction, and a heating plate with an upwardly convex cross-sectional shape arranged above the gas burner (see, for example, Patent Document 1).

[0003] In such a cooking appliance, it is desirable to narrow the distance between the burner units to reduce uneven heating of the food above the burner units. However, if the distance between the burner units is narrow, oil or fat dripping from the food and splashing onto the hot plate or running down the hot plate may adhere to the flame holes of the gas burners of the adjacent burner units, causing the flame holes to become clogged. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 10-179418 Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above, an object of the present invention is to provide a cooking device that can prevent oil and grease from adhering to the flame holes of a gas burner even when the distance between burner units is narrow. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides a cooking device in which two orthogonal horizontal directions, the X-axis direction and the Y-axis direction, are taken as the X-axis direction and the Y-axis direction, and a plurality of burner units are arranged in parallel in the Y-axis direction, each burner comprising a gas burner with a plurality of upwardly opening flame holes formed along the X-axis direction, and a hot plate arranged above the gas burner and with a cross-sectional shape that is convex upward, the cooking device is characterized in that a partition plate is erected between adjacent burner units in the Y-axis direction, the length of the partition plate in the X-axis direction is set so that it extends beyond the X-axis range in which the flame holes of the gas burner are formed on one side and the other side in the X-axis direction, the lower end of the partition plate is located below the flame holes of the gas burner, and the upper end of the partition plate is located above the side edges on both sides in the Y-axis direction that are the lowest part of the hot plate.

[0007] According to the present invention, even if the interval between the burner units is narrow, the partition plate can prevent oils and fats dripping from the food from scattering on the hot plate or falling along the hot plate and adhering to the flame holes of the gas burners of the adjacent burner units. Therefore, the interval between the burner units can be narrowed and uneven heating of the food can be reduced without worrying about the flame holes being clogged with oils and fats.

[0008] By forming a plurality of vent holes on the hot plate through which the combustion gas generated by the combustion in the gas burner passes, it is possible to reduce uneven heating of the hot plate and also to heat the food by the combustion gas passing through the vent holes, which is advantageous. In this case, it is desirable that the upper end of the partition plate is positioned at a height equal to or higher than the upper edge of the uppermost vent hole of the hot plate. This prevents oil and fat scattered on the hot plate from adhering to the flame holes of the gas burner of the adjacent burner unit through the vent holes in the hot plate of the burner unit.

[0009] In the present invention, the partition plate is preferably surface-treated to increase reflectivity or emissivity, so that the radiant heat radiated outward in the Y-axis direction from the hot plate is reflected by the partition plate or absorbed by the partition plate and then radiated from the partition plate, which can be effectively used to heat the heated object, improving cooking efficiency.

[0010] Furthermore, in the present invention, it is desirable that the partition plate is detachable, so that the partition plate can be removed and washed, thereby improving ease of maintenance. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view of a cooking device according to an embodiment of the present invention; [Figure 2] FIG. 2 is a cross-sectional side view taken along line II-II in FIG. [Figure 3] FIG. 3 is a cross-sectional front view taken along line III-III in FIG. 2. [Figure 4] FIG. 2 is a perspective view of a burner unit provided in the cooking device according to the embodiment. [Figure 5] 3 is an enlarged perspective view of the main part of the cooking device of the embodiment with the grill removed. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] 1 to 3, in a cooking appliance according to an embodiment of the present invention, two orthogonal horizontal directions are defined as the X-axis and Y-axis directions. A plurality of burner units B (specifically, four burner units B) are arranged in parallel in the Y-axis direction at the top of an open-topped container 1. The burner units B each include a gas burner 2 elongated in the X-axis direction and a metal hot plate 3 with an upwardly convex cross section (specifically, an upwardly convex arc shape) located above the gas burner 2. The hot plate 3 has a plurality of vent holes 31 formed by cutting and raising, which open outward in the Y-axis direction and through which combustion gas generated by combustion in the gas burner 2 passes. The hot plate 3 is heated to a red-hot state by combustion in the gas burner 2, and the radiant heat emitted from the hot plate 3 and the combustion gas passing through the vent holes 31 heat the food on a grill 4 located above the container 1. Incidentally, by forming a plurality of vent holes 31 in the hot plate 3 as described above, uneven heating of the hot plate 3 can be reduced.

[0013] Grill 4 is placed on a rectangular support frame 42 connected to the upper ends of vertically movable support posts 41 provided on both sides of the body 1 in the Y-axis direction. Support posts 41 are raised and lowered by the vertical swing of an operating lever 43 protruding in one direction of the body 1 in the X-axis direction. A lock lever 44 is attached to operating lever 43, which locks it in any swing position. Pulling lock lever 44 upward releases the lock, allowing the operating lever 43 to swing. A drip tray 5 is also located at the bottom of body 1 so that it can be freely moved in and out in one direction of the X-axis.

[0014] The gas burner 2 comprises a tubular burner body 21 elongated in the X-axis direction, and a plurality of upward-opening flame holes 22 formed along the X-axis direction at the top of the burner body 21. In this embodiment, two adjacent rows of flame holes, each consisting of a plurality of flame holes 22 along the X-axis direction, are provided in the Y-axis direction. Referring to FIG. 4, both ends of the burner body 21 in the X-axis direction are closed by plugs 23, 23. Each plug 23 has a protrusion 231 protruding outward in the X-axis direction. The protrusion 231 of each plug 23 is fastened to support brackets 12 for the burner unit B, which are fixed to frames 11 on both sides of the upper portion of the body 1 in the X-axis direction, thereby fixing and supporting the gas burner 2. Each support bracket 12 also supports each end of the hot plate 3 in the X-axis direction. The gas burner 2 is also provided with an ignition electrode 24 serving as ignition means located above one end in the X-axis direction and a thermocouple 25 serving as flame detection means located above the other end in the X-axis direction.

[0015] Each gas burner 2 is supplied with hydrogen gas as fuel gas via a gas supply path 61 extending from each valve unit 6 inside a box 13 attached to one surface of the body 1 in the X-axis direction, and this hydrogen gas is ejected from flame holes 22 of the gas burner 2 and diffuses and burns. On one outer surface of the box 13 in the X-axis direction, there are arranged an operation knob 62 for each valve unit 6 and a power switch 63 for starting a controller (not shown) for each valve unit 6. When the operation knob 62 is pressed and turned from its stopped position to perform the ignition operation, hydrogen gas is supplied to the gas burner 2 and a spark is generated at the ignition electrode 24, igniting the gas burner 2.

[0016] Incidentally, in order to reduce uneven heating of the food to be cooked, it is desirable to narrow the gap between the burner units B, B. However, if the gap between the burner units B, B is narrowed, oil and fat dripping from the food to be cooked may scatter on the hot plate 3 or fall along the hot plate 3, and adhere to the flame holes 22 of the gas burner 2 of the adjacent burner unit B, causing the flame holes 22 to become clogged. In particular, in the gas burner 2 of this embodiment, which uses hydrogen gas as the fuel gas, the flame holes 22 must be formed with a small diameter (e.g., 0.6 mm) equal to or smaller than the quenching distance in order to prevent flashback, which is likely to occur with hydrogen gas. However, since the flame holes 22 are prone to becoming clogged, measures must be taken.

[0017] Therefore, in this embodiment, a partition plate 7 is installed between adjacent burner units B, B in the Y-axis direction. A partition plate 7 is also installed outside the outermost burner unit B in the Y-axis direction. The length of the partition plate 7 in the X-axis direction is slightly longer than the length of the hot plate 3 in the X-axis direction. Referring to FIG. 2, the length of the hot plate 3 in the X-axis direction is set to extend beyond the X-axis range Xa in which the burner holes 22 of the gas burners 2 are formed on both sides in the X-axis direction. Therefore, the length of the partition plate 7 in the X-axis direction is also set to extend beyond the X-axis range Xa in which the burner holes 22 of the gas burners 2 are formed on both sides in the X-axis direction. Referring to FIG. 3, the lower end of the partition plate 7 is located below the burner holes 22 of the gas burners 2, and the upper end of the partition plate 7 is located above the lowermost side edges of the hot plate 3 on both sides in the Y-axis direction.

[0018] With this, even if the distance between adjacent burner units B, B in the Y-axis direction is narrowed, the partition plate 7 can prevent oil and fat dripping from the food from scattering on the hot plate 3 or falling along the hot plate 3 and adhering to the flame holes 22 of the gas burner 2 of the adjacent burner unit B. Therefore, it is possible to narrow the distance between the burner units B, B and reduce uneven heating of the food without having to worry about the flame holes 22 being clogged with oil and fat.

[0019] In this embodiment, the upper end of the partition plate 7 is positioned at the same height as the upper edge of the uppermost vent hole 31 of the multiple vent holes 31 of the hot plate 3. This makes it possible to prevent oils and greases scattered on the hot plate 3 from adhering to the flame holes 22 of the gas burner 2 of the adjacent burner unit B through the vent hole 31 of the hot plate 3 of the burner unit B.

[0020] Furthermore, the partition plate 7 is surface-treated to increase reflectivity, for example, by a mirror finish, so that the radiant heat emitted outward in the Y-axis direction from the hot plate 3 is reflected by the partition plate 7 and can be effectively used to heat the food, improving cooking performance.

[0021] 5, the partition plate 7 is supported by inserting the lower portions of each end in the X-axis direction into slits 11a formed in the frames 11 on both sides in the X-axis direction of the upper part of the body 1, and is therefore detachable. Therefore, the partition plate 7, which is prone to becoming soiled by grease and oil, can be removed and washed, improving maintainability.

[0022] Although the present invention has been described above with reference to the drawings, the present invention is not limited thereto. For example, in the above embodiment, the upper end of the partition plate 7 is positioned at the same height as the upper edge of the uppermost vent hole 31 of the multiple vent holes 31 of the hot plate 3. However, the upper end of the partition plate 7 may be positioned above the upper edge of the uppermost vent hole 31. Furthermore, the partition plate 7 may be surface-treated to increase its emissivity, for example, by painting its surface black. According to Kirchhoff's law, emissivity = absorptivity. Therefore, increasing the surface emissivity of the partition plate 7 allows the partition plate 7 to efficiently absorb radiant heat radiated outward in the Y-axis direction from the hot plate 3, thereby efficiently radiating radiant heat when the partition plate 7 is heated. Therefore, even if the partition plate 7 is surface-treated to increase its emissivity, the radiant heat radiated outward in the Y-axis direction from the hot plate 3 can still be effectively used to heat the food being cooked. In addition, in the above embodiment, the ventilation holes 31 of the hot plate 3 are formed by cutting and raising (louvering) so as to open outward in the Y-axis direction, but may also be formed by cutting and raising so that the edge in the X-axis direction is open.Furthermore, in the above embodiment, the upward convex shape of the cross section of the hot plate 3 is specifically an arc shape, but may also be a mountain shape or a trapezoid shape. [Explanation of symbols]

[0023] B...burner unit, 2...gas burner, 22...flame hole, Xa...X-axis direction range in which the flame hole is formed, 3...heat plate, 31...vent hole, 7...partition plate.

Claims

1. In a cooking device, two orthogonal horizontal directions are defined as X-axis direction and Y-axis direction, and a plurality of burner units are arranged in parallel in the Y-axis direction, the burner units including a gas burner having a plurality of upwardly opening flame holes formed along the X-axis direction and a hot plate disposed above the gas burner and having an upwardly convex cross section, A heating cooker characterized in that a partition plate is erected between adjacent burner units in the Y-axis direction, the length of the partition plate in the X-axis direction is set so as to extend beyond the X-axis range in which the flame holes of the gas burners are formed on one side and the other side in the X-axis direction, the lower end of the partition plate is located below the flame holes of the gas burners, and the upper end of the partition plate is located above the side edges on both sides in the Y-axis direction that are the lowest parts of the heating plate.

2. 2. The cooking device according to claim 1, wherein the heating plate has a plurality of vent holes formed therein through which the combustion gas generated by the combustion in the gas burner passes, and the upper end of the partition plate is located at a height equal to or higher than the upper edge of the uppermost vent hole of the heating plate.

3. 3. The cooking device according to claim 1, wherein the partition plate is subjected to a surface treatment for increasing reflectance or emissivity.

4. 3. The cooking device according to claim 1, wherein the partition plate is detachable.

Images