JP7698262B2 - Barbecue Grill - Google Patents

Description

The present invention relates to a barbecue grill.

Traditionally, when cooking food using a burner such as a stove or charcoal grill, a mesh-shaped cooking utensil is placed on top of the burner, and the food is then placed on top of the cooking utensil.

This type of cooking utensil is often made by attaching a wire mesh to a metal frame and forming it into a flat plate (see, for example, Patent Document 1).

JP 2021-35470 A

However, because the above-mentioned conventional cooking utensils are formed in a flat plate shape, the heat generated in the burner dissipates outward as it passes through the cooking utensil.

As a result, conventional cooking utensils not only had low heating efficiency for food ingredients, but also low exhaust efficiency for the burner, which could result in smoke being generated due to incomplete combustion caused by a drop in combustion temperature.

Therefore , in the present invention according to claim 1 , a swirling inlet section is formed outside the combustion space where the flame is formed, for swirling air to flow into the combustion space, and a swirling outlet section is formed above the combustion space, for swirling combustion gas to flow out from the combustion space, and in a barbecue grill in which a mesh-shaped cooking utensil is placed above the swirling outlet section, the cooking utensil has an outer peripheral tube that extends cylindrically above the surface of the cooking body on the outer periphery of the mesh-shaped cooking body having through holes passing through it from top to bottom, and a central through hole is formed in the center of the through holes, and a plurality of spiral through holes are formed outside the central through hole and arranged in a spiral shape in the same direction as the swirling direction at the swirling outlet section.

In a second aspect of the present invention, in the first aspect of the present invention, a central exhaust hole is provided at the center of the swirling outflow portion.

And the present invention has the following advantages:

In other words, in this invention, in a mesh-shaped cooking utensil placed on top of a burner with an exhaust hole formed above the combustion space where a flame is formed, an outer tube is provided around the outer periphery of a mesh-shaped cooking body with through holes penetrating vertically, extending cylindrically above the surface of the cooking body. This prevents the heat emitted from the exhaust hole of the burner from being immediately diffused outward by the outer tube, improving the heating efficiency of the ingredients and improving the exhaust efficiency of the burner, thereby preventing smoke from being generated due to incomplete combustion caused by a drop in combustion temperature.

In particular, a swirling inlet section is formed outside the combustion space where the flame is formed to swirl and introduce air into the combustion space, and a swirling outlet section is formed above the combustion space to swirl and expel combustion gas from the combustion space. A mesh-shaped cooking utensil is placed above the swirling outlet section, and the cooking utensil is provided with an outer tube that extends cylindrically above the surface of the cooking utensil on the outer periphery of the mesh-shaped cooking body with through holes that penetrate from top to bottom. In this case, the outer tube can prevent the heat (combustion gas) discharged from the exhaust hole of the combustor from being immediately diffused outward, improving the heating efficiency of the food ingredients and improving the exhaust efficiency of the combustor, thereby preventing smoke from being generated due to incomplete combustion caused by a drop in combustion temperature.

In addition, if the through holes are arranged in a spiral shape in the same direction as the swirling direction in the swirling outflow section, the exhaust efficiency of the combustor can be further improved.

FIG. 1 is a front view showing a barbecue grill according to the present invention. FIG. FIG. FIG. FIG. The same side view.

The specific configuration of the barbecue grill according to the present invention will be explained below with reference to the drawings.

As shown in Figures 1 and 2, the barbecue grill 1 is configured with a trivet 3 on top of a combustion promoter 2 and cooking utensils 4 on top of the trivet 3.

As shown in Figures 1 to 3, the combustion promoter 2 has multiple (four in this case) annular partition plates 6 arranged above a disk-shaped bottom plate 5 with their outer circumferential edges aligned and spaced equally above and below, and multiple (eight in this case) straightening plates 7 attached to the top of the bottom plate 5 and partition plates 6 at equal intervals in the circumferential direction and inclined at a constant angle with respect to the radial direction from the outer circumferential edges of the bottom plate 5 and partition plates 6 toward the center. The straightening plates 7 extend from the outer circumferential edge to the inner circumferential edge of the annular partition plate 6.

The combustion promoter 2 can create a flame by igniting combustible materials such as charcoal or firewood placed on the top center of the bottom plate 5.

In this combustion promoter 2, a hollow cylindrical combustion space 8 (space where a flame is formed) is formed in the upper center of the bottom plate 5, surrounded by the inner peripheral edge of the partition plate 6, and a swirling inlet section 9 is formed where the air outside the combustion space 8 (outside air) flows into the combustion space 8 while inclining in a certain direction due to the baffle plate 7 that is inclined in a certain direction, causing the air to swirl (here, rotate left when viewed from above) and flow into the combustion space 8.

As a result, the combustion promoter 2 can promote flame combustion by the swirling flow formed inside the combustion space 8 by the swirling inlet section 9, thereby improving combustion efficiency.

As shown in Figures 1, 2, and 4, the trivet 3 has a circular base plate 10 with a bent edge 11 formed at the outer edge, a central exhaust hole 12 at the center (above the center of the combustion space 8 of the combustion promoter 2), and multiple (four in this case) outer exhaust holes 13 on its periphery (above the outer periphery of the combustion space 8 of the combustion promoter 2). In addition, multiple (four in this case) support plates 14 bent upward between adjacent outer exhaust holes 13 are formed at equal intervals in the circumferential direction, inclined at a constant angle relative to the radial direction from the center to the outside.

The trivet 3 can be attached to the upper end of the combustion promoter 2 so that it can rotate freely by covering the upper end of the combustion promoter 2 (the upper end of the partition plate 6) with a frame 11.

The trivet 3 can also support cooking utensils such as cooking utensils 4, pots, and kettles on the support plate 14.

In this trivet 3, the combustion gas discharged from the combustion space 8 through the central exhaust hole 12 and the outer exhaust hole 13 is blocked by the cooking utensil 4 or the bottom of the cooking appliance and discharged horizontally, and then flows out of the combustion space 8 at an incline in a certain direction by the support plate 14, which is inclined in a certain direction, forming a swirling outlet section 15 that causes the combustion gas to swirl (here, rotate left in a plan view) and flow out of the combustion space 8. Note that the swirling inlet section 9 and the swirling outlet section 15 are designed to swirl in the same direction (here, rotate left in a plan view).

As a result, the trivet 3 allows the combustion gas to be smoothly discharged from the combustion space 8 by the swirling outlet section 15, promoting flame combustion and improving combustion efficiency.

As shown in Figures 1, 2, 5, and 6, the cooking utensil 4 has a cylindrical outer tube 17 on the outer periphery of a disk-shaped cooking body 16 on which ingredients are placed.

The cooking body 16 is formed in a net-like shape by forming a plurality of through holes 18 that penetrate vertically through a circular plate of a certain thickness. The through holes 18 form a circular central through hole 19 in the center, and a plurality of (here, five) spiral through holes 20 are arranged in a spiral shape on the outside of the central through hole 19 in the same direction as the swirling direction in the swirling outlet section 15 (here, the counterclockwise direction in a plan view), forming a plurality of equally spaced rows (here, 16 rows) of spiral through holes 21. In addition, between adjacent through holes 18 (central through hole 19, spiral through hole 20) from the center toward the outer periphery, a plurality of (here, six) annular heating plates 22 arranged in a concentric manner are formed, and between adjacent spiral through holes 20 in the circumferential direction, a plurality of (here, sixteen) spiral heating plates 23 are formed, which are curved in a spiral shape in the same direction as the swirling direction in the swirling outflow section 15 (here, the left rotation direction in a plan view). Here, the width of each of the concentrically arranged annular heating plates 22 is gradually increased toward the outer periphery, and the width of each spiral heating plate 23 is gradually increased toward the outer periphery, and further, the opening area of each of the spiral through holes 20 forming the spiral through hole row 21 is increased toward the outer periphery.

The outer tube 17 extends cylindrically from the outer edge of the cooking body 16 upward above the surface (top surface: cooking surface) of the cooking body 16, surrounding the entire surface of the cooking body 16. The outer tube 17 may be formed cylindrically not only above but also below the surface of the cooking body 16. The height of the outer tube 17 (height above the surface of the cooking body 16) is higher than the height of the support plate 14 of the trivet 3 (the distance between the upper end surface of the combustion promoter 2 and the lower end surface of the cooking utensil 4).

In the barbecue grill 1, the heat (combustion gas) discharged from the combustion space 8 of the combustion promoter 2 heats the heating plate (annular heating plate 22 and spiral heating plate 23) and is discharged upward from the through holes 18 (central through hole 19, spiral through hole 20). At that time, the combustion gas does not diffuse all at once after passing through the cooking body 16, but is guided to the outer tube 17 and discharged smoothly upward. Moreover, because the spiral through holes 20 of the cooking body 16 are arranged in a spiral shape in the same direction as the swirling direction in the swirling outflow section 15, the combustion gas is discharged even more smoothly without resistance.

As described above, the barbecue grill 1 is configured to be separable into the combustion promoter 2, trivet 3, and cooking utensils 4, but this is not limited thereto, and the whole may be configured as one piece, the combustion promoter 2 and trivet 3 may be formed as one piece, or the trivet 3 and cooking utensils 4 may be formed as one piece. In the present invention, the combustion promoter 2 alone, or the combustion promoter 2 and trivet 3 together, can be used as a burner.

As explained above, the barbecue grill 1 is configured with a mesh-like cooking utensil 4 placed on top of a burner (combustion promoter 2 and trivet 3) that has exhaust holes (central exhaust hole 12 and outer exhaust hole 13) formed above the combustion space 8 where the flames are generated.

The cooking utensil 4 is configured with an outer circumferential tube 17 that extends cylindrically above the surface of the cooking body 16, on the outer periphery of the net-like cooking body 16 having through holes 18 that penetrate vertically.

Therefore, in the cooking utensil 4 configured as described above, the outer tube 17 prevents the heat (combustion gas) emitted from the exhaust holes (central exhaust hole 12 and outer exhaust hole 13) of the burner (combustion promoter 2 and trivet 3) from immediately diffusing outward, improving the heating efficiency of the ingredients and improving the exhaust efficiency of the burner (combustion promoter 2 and trivet 3), preventing smoke from being generated due to incomplete combustion caused by a drop in the combustion temperature.

In addition, in the cooking utensil 4 configured as described above, the outer tube 17 attached to the outer periphery of the cooking body 16 prevents the cooking body 16 from deforming and prevents the ingredients from falling off the cooking body 16. Furthermore, the outer tube 17 retains heat, allowing the ingredients to be heated well in a short time by heat reflection.

In particular, the above-mentioned barbecue grill 1 has a swirling inlet section 9 formed outside the combustion space 8 where the flames are generated, for swirling air to flow into the combustion space 8, and a swirling outlet section 15 formed above the combustion space 8, for swirling combustion gas to flow out from the combustion space 8, and a mesh-shaped cooking utensil 4 is placed above the swirling outlet section 15.

Therefore, in the barbecue grill 1 configured as described above, the outer tube 17 prevents the heat (combustion gas) emitted from the exhaust holes (central exhaust hole 12 and outer exhaust hole 13) of the burner (combustion promoter 2 and trivet 3) from immediately diffusing outward, improving the heating efficiency of the food ingredients and improving the exhaust efficiency of the burner (combustion promoter 2 and trivet 3), preventing smoke from being generated due to incomplete combustion caused by a drop in combustion temperature.

The barbecue grill 1 is also configured such that the through holes (spiral through holes 20) are arranged in a spiral shape in the same direction as the swirling direction in the swirling outlet section 15.

Therefore, the barbecue grill 1 configured as described above can further improve the exhaust efficiency of the burner (combustion promoter 2 and trivet 3).

REFERENCE SIGNS LIST 1 barbecue grill 2 combustion promoter 3 trivet 4 cooking utensils 5 bottom plate 6 partition plate 7 straightening plate 8 combustion space 9 swirling inlet portion 10 base plate
11 Edge frame 12 Central exhaust hole
13 Outer exhaust hole 14 Support plate
15 Swirling outlet portion 16 Cooking body
17 Outer tube 18 Through hole
19 Central through hole 20 Spiral through hole
21 Spiral through hole row 22 Annular heating plate
23 Spiral heating plate

Claims (2)

A barbecue grill having a swirling inlet section formed outside a combustion space in which a flame is formed, for swirling air to flow into the combustion space, and a swirling outlet section formed above the combustion space, for swirling combustion gas to flow out from the combustion space, and a net-shaped cooking utensil placed above the swirling outlet section,
The cooking utensil has an outer circumferential tube extending cylindrically upward from the surface of the cooking body on the outer periphery of the net-like cooking body having a through hole penetrating vertically,
This barbecue grill is characterized in that the through holes are formed by forming a central through hole in the center and forming a plurality of spiral through holes arranged in a spiral shape outside the central through hole in the same direction as the swirling direction in the swirling outflow section. 2. The barbecue grill according to claim 1 , wherein a central exhaust hole is provided at the center of the swirling outlet portion.

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