JPH0616256Y2 - roaster - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a roaster used for grilling meat, fish, shellfish, vegetables and the like.

[Prior Art] A roaster of this type has a casing that surrounds a space for arranging a burner, and a wire mesh for placing a material to be burned is placed in an upper opening of the casing. There is provided a burner for burning an object to be burned in a space inside the casing, and there is a burner configured to supply fuel gas and air from outside the casing (for example, Japanese Patent Laid-Open No. 56-56).
-100240).

[Problems to be Solved by the Invention] In the case of the above configuration, when the object to be burned is placed on the wire net and baked by the heat from the burner, the objects to be burned are arranged too closely and the wire net is passed through. When the pores are blocked,
Carbon dioxide generated by the combustion of the burner accumulates between the wire mesh and the burner in the casing, and the flame is in a state of being enclosed by the carbon dioxide. Then, since the burner is supplied with 50 to 70% of the total amount of air required for combustion mixed with the fuel gas in advance, the internal flame is formed, but the remaining 50 to 30% against the external flame is formed. There was a problem that the flame would be incompletely burned because the supply of% air was cut off.

Further, as the burner, a burner main body that forms a main flame is provided above, and a barrier plate is arranged on the side of the burner main body to form a supplementary flame between the burner main body and the barrier plate. In addition to the above, an ascending air current is generated from the place where the supplementary flame is formed toward the main flame (for example, see Japanese Utility Model Laid-Open No. 51-162334).

However, even when such a burner is used in a roaster of the type surrounded by the above-mentioned casing, when carbon dioxide is accumulated and the main flame is wrapped in the carbon dioxide as described above, the main flame contains 50% to 30% of the air. However, there is a problem that the supply of hydrogen is interrupted and incomplete combustion occurs. In this case, in the above-mentioned structure, the ascending air current is passed toward the supplementary flame and then toward the main flame.
That is, since the oxygen in the ascending air current is supplied to the supplementary flame to consume the oxygen, and only the remaining combustion gas is directed to the main flame, the supply of oxygen to the main flame is interrupted and incomplete combustion occurs.

The present invention was made in order to solve the above-mentioned problems (technical problems) of the prior art. Since a large number of objects to be burned are arranged on a board on which the objects are burned, the ventilation holes are blocked, Even if carbon accumulates between the board and the burner's combustion port, the burner provides a roaster that can supply sufficient oxygen to the external flame in the combustion flame and complete combustion. The purpose is to do.

[Means for Solving the Problems] In order to achieve the above object, the roaster according to the present invention is a roasted object having a ventilation hole in an opening above a side wall surrounding a space sufficient to arrange a main burner. A mounting plate is provided, and a main burner for burning an object to be burned is provided in a space inside the side wall, and the main burner is provided with a regulator and a mixing pipe for supplying fuel gas and air from the outside of the side wall to the main burner. In the space inside the side wall in the roaster connecting the above, the lower end is located below the combustion port of the main burner around the main burner, and the upper end is higher than the flame generated from the combustion port of the main burner. Provide a surrounding wall located at a high position, and an intake hole for air intake at a position lateral to the surrounding wall in the side wall,
An exhaust hole for discharging hot gas generated by the combustion of the main burner is provided, and further, the space between the mounting plate and the upper end of the surrounding wall is pushed up by the combustion of the main burner above the surrounding wall. On the one hand under the lower end of the surrounding wall of the hot gas to bring the hot gas to the exhaust hole, an air passage is provided to bring the fresh air taken in from the intake hole to the lower inside of the surrounding wall. The fresh air can be supplied through the inside of the surrounding wall toward the external flame in the above flame.

[Operation] By burning in the main burner, the heat burns the object to be burned placed on the board. In this case, the objects to be burned are densely arranged on the mounting plate to close the ventilation holes of the mounting plate, and hot gas is accumulated between the mounting plate and the combustion port of the main burner in the inner space of the side wall. However, since the circumference of the flame generated from the combustion port is surrounded by the surrounding wall, a fresh air circulation layer is formed next to the flame inside the surrounding wall. As a result, oxygen necessary for combustion of the outer flame can be supplied to the outer flame of the flame from the fresh air circulation layer, and the outer flame can be completely burned.

[Embodiment] Hereinafter, drawings showing an embodiment of the present application will be described. 1 to 4, reference numeral 1 denotes a roaster, which has the same structure as a well-known roaster except for a surrounding wall described later. Reference numeral 1a represents a side wall of the roaster, and 1b represents a space for arranging the main burner surrounded by the side wall 1a. 1e indicates an opening above the side wall 1a. Reference numeral 2 denotes a main burner provided in the space 1b, which has a structure in which, for example, city gas or propane gas is used as fuel gas, and has an outer diameter of about 150 mm, an inner diameter of about 128 mm, and a height of about 50 mm. It is a thing. Reference numeral 15 shows the combustion ports of many gases in the main burner 2. 3 is a regulator and 4 is a mixing tube. Reference numeral 5 indicates a radiant plate receiving metal fitting for ware, and 6 indicates a surrounding wall,
These have an integrated structure. The main burner 2, the regulator 3, the mixing tube 4, the bracket 5, the surrounding wall 6
Etc. are formed of a heat resistant material such as a stainless steel plate or an iron plate.

The surrounding wall 6 provided around the main burner 2 has a diameter of 1
It is formed to have a height of about 85 mm and a height of about 56 mm, and is arranged so that the upper end 13 is located about 37 mm above the gas combustion port 15 of the main burner 2. Heat sink plate fitting 5 for the above-mentioned pottery
Also has a role of maintaining a gap between the main burner 2 and the surrounding wall 6 through which secondary air necessary for combustion of fuel gas can be taken.

Reference numeral 7 denotes a radiant plate for ware, which is large enough to cover the hot gas burned by the main burner 2. Reference numeral 9 is a mounting plate provided for mounting the object to be burned 10 in the opening 1e, and is, for example, a wire mesh. Reference numeral 9a indicates a large number of ventilation holes in the mounting plate 9. The mounting plate may be an iron plate 8 having a vent hole 8a as shown in FIG.

Reference numeral 11 designates an intake hole for taking in secondary air, which is provided at a side position of the surrounding wall 6 in the side wall 1a, and is formed in such a size that the regulator 3 can be arranged therein. Reference numeral 12 denotes an exhaust hole for discharging the hot gas obtained by burning the fuel gas, which is formed above the intake hole 11. The intake hole 11 and the exhaust hole 12 may be the same hole.

Next, the arrow 21 indicates that hot gas pushed up above the surrounding wall 6 by combustion of the main burner 2 between the mounting plate 9 and the upper end 13 of the surrounding wall 6 reaches the exhaust hole 12. The presence of a hot gas passage indicates the existence of an air passage, and the arrow 22 indicates the presence of an air passage under the lower end 14 of the surrounding wall 6 to bring the fresh air taken in from the intake hole 11 to the lower inside of the surrounding wall 6. Show.

In the above configuration, the fuel gas and the primary air are sucked from the regulator 3, that is, the fuel gas and the primary air are supplied from the outside of the side wall 1a to the main burner 2 through the regulator 3 and the mixing pipe 4, and the main burner 2 Burning mouth
It is ejected from 15, forms a flame 23, and is burned. At that time, the secondary air required for combustion, especially the air required for combustion of the external flame 25, is taken in through the intake hole 11, passes through the air passage 22, and enters the surrounding wall 6 through the gap between the surrounding wall 6 and the main burner 2. Inhaled. The secondary air facilitates combustion of the fuel gas. The hot gas generated by the combustion of the flame 23 inside the surrounding wall 6 is pushed out from above the surrounding wall 6. In this case, the higher the temperature of the hot gas, the faster the temperature rises, and the faster the amount of intake air entering the gap between the main burner 2 and the surrounding wall 6 becomes, thereby completely burning the hot gas. Due to the heat generated by the combustion of the main burner 2 as described above, the object 10 to be burned placed on the board 9 is burned.

In the above case, when a large number of objects to be burned 10 are arranged on the loading plate 9, the ventilation holes 9a of the loading plate 9 are blocked by the objects to be burned 10 and it is impossible to exhaust gas upward from there. However, the temperature of the hot gas pushed up above the surrounding wall 6 becomes low when it reaches the board 9 or the object 10 to be burned, and then falls down to the exhaust hole 12 through the hot gas passage 21 and is pushed out of the exhaust hole 12. Be done. That is, because of the presence of the surrounding wall 6, the inside of the surrounding wall 6 becomes the same as the combustion chamber, and intake is performed from below and exhaust is performed from above.

Explaining this further, when the vent hole 9a is closed as described above, the hot gas generated by combustion (a large amount of carbon dioxide is included) between the combustion port 15 of the main burner 2 and the mounting plate 9. May accumulate and the flame 23 may be encased in the hot gas. However, in the surrounding wall 6 surrounding the sides of the flame 23, the rise of the hot gas there replaces the fresh air taken in from the intake holes 11 and the air passage 22 and the surrounding wall 6 are replaced. Enters the inside of the surrounding wall 6 through the lower part of the above, and flows sideways of the flame 23. As a result, sufficient oxygen is supplied to the outer flame 25 in the flame 23 from the fresh air flowing through the surrounding wall 6, and the outer flame 25 is completely burned.

With respect to the surrounding wall 6 that performs the above-described operation, the higher the height of the upper end 13 of the surrounding wall 6 is, the higher the outer flame 25 of the flame 23 is, and the more stable combustion occurs. Also, the higher the temperature of the hot gas, the faster the rise of the hot gas and the more stable combustion. In that case, the height of the lower end 14 is
It should be below the combustion port 15, but the main burner 2
Combustion can be stabilized as it approaches the bottom 16 of.

The surrounding wall 6 allows combustion to be carried out without being influenced by wind or the like and eliminates fluctuations of hot gas, thereby enabling stable pottery work.

Next, FIG. 5 shows a different embodiment of the present application, which is an example implemented in a smokeless roaster. In such a smokeless roaster, a lot of burned material 10 is placed on the board 8c.
Even if C is placed and the vent hole 8aC is blocked and cannot be exhausted from there, the exhaust hole 11C can be exhausted as in the previous embodiment.
Complete burn of main burner 2C. Also, while the smokeless roaster is being used, the exhaust air is always pulled by the fan, but since there is the surrounding wall 6c, stable combustion can be performed without the hot gas fluctuating. It should be noted that parts that are considered to have the same or equivalent configurations as those in the previous figure in terms of function are denoted by the same reference numerals as those in the previous figure with the letter C added thereto, and redundant description is omitted.
(Also, in the following drawings, the same idea is used, and the letter d is added to omit the duplicated explanation.) Next, FIG. 6 shows a further different embodiment of the present application, in which the main burner 2d is formed elongated. The following shows an example.

[Effect of the Invention] As described above, in the present invention, by burning the main burner 2 and placing the burned material 10 on the mounting plates 9 and 8, the burned material 10 is burned by the main burner 2. In addition to being able to be baked by heat, in the above case, the objects 10 to be burned are closely arranged on the mounting plates 9 and 8 so that the vent holes 9a and 8a of the mounting plates 9 and 8 are closed and the side 1a is closed. Even when hot gas is accumulated between the mounting plates 9 and 8 and the combustion port 15 of the main burner 2 in the inner space 1b of the main burner 2, the height of the upper end 13 of the surrounding wall 6 is set from the main burner 2 in the present invention. Since the flame 23 is formed to be higher than the generated flame 23, the surrounding wall 6 forms a circulation layer of fresh air beside the flame 23 (in particular, the external flame 25), and the external flame 25 in the flame 23 is formed from the circulation layer. Can supply the necessary oxygen for combustion, and as a result, the main burner 2 Out of these flames 23, the external flame 25, which is weak against oxygen deficiency, can be completely burned.

[Brief description of drawings]

The drawings show an embodiment of the present application. FIG. 1 is a schematic vertical sectional view of a roaster, FIG. 2 is a schematic vertical sectional view of a roaster equipped with an iron plate as a mounting plate, and FIG. 3 is a surrounding wall. FIG. 4 is a schematic plan view showing the state, FIG. 4 is a perspective view showing the relationship between the main burner and the surrounding wall, FIG. 5 is a schematic vertical cross-sectional view of the smokeless roaster, and FIG. 6 is different from the main burner and the surrounding wall. The schematic longitudinal cross-sectional view showing a shape. 1a ... Side wall, 2 ... Main burner, 6 ... Surrounding wall, 9
…… Mounting board, 11 …… Intake hole, 12 …… Exhaust hole, 21 …… Hot gas passage, 22 …… Air passage.

Claims (1)

[Scope of utility model registration request] 1. An opening (1e) above a side wall (1a) which surrounds a space (1b) sufficient for arranging a main burner (2) has a ventilation hole (9a, 8a) mounted thereon. The side plate (9, 8) is provided, the space (1b) in the side wall (1a) is provided with a main burner (2) for burning an object to be burned, and the main burner (2) is provided with a side wall (1
In the roaster connecting the regulator (3) and the mixing pipe (4) for supplying the fuel gas and air to the main burner (2) from the outside of (a), in the space (1b) in the side wall (1a) Around the main burner (2), the lower end (14) is located below the combustion port (15) of the main burner (2), and the upper end (13) is from the combustion port (15) of the main burner. The surrounding wall (6) located higher than the flame (23) generated,
An intake hole (11) for intake of air and an exhaust hole (12) for discharging hot gas generated by combustion of the main burner (2) are provided at a side position of the surrounding wall (6) in (1a). Between the mounting plate (9, 8) and the upper end (13) of the surrounding wall (6), heat that is pushed up above the surrounding wall (6) by the combustion of the main burner (2) is provided. A hot gas passage (21) is provided for introducing gas to the exhaust hole (12), while the lower end of the surrounding wall (6) is provided.
Below the (14), an air passage (22) for introducing fresh air taken in from the intake hole (11) to the lower inside of the surrounding wall (6) is provided, and in the flame (23). A roaster characterized in that fresh air can be supplied to the outside flame (25) through the inside of the surrounding wall (6).