JP2978420B2 - Gas roaster - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas roaster and, more particularly, to a technique for making the temperature distribution uniform when heating the inside of a roasting case with a long burner. is there.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 15, in a gas roaster, long burners 2a and 2b are arranged opposite to a lower portion of a roasting case 1, and the long burners 2a and 2b are provided with: Its longitudinal direction
A large number of flame holes 18 are formed at intervals in the direction , and the inside of the roasting case 1 is heated and cooked by burning in these flame holes 18.

In this case, as shown in FIG. 17 (b), the flame holes 18 are arranged in a staggered manner in the longitudinal direction of the long burners 2a, 2b, and are roasted outside the long burners 2a, 2b. The louver pieces B are provided in a zigzag pattern on the inner side of the firing case in accordance with the zigzag pattern of the flame holes 18... And the staggered phases of the long burners 2 a and 2 b opposing left and right are opposed to each other. It is different from each other.

However, although the secondary air is introduced along with the combustion in the staggered flame holes 18, the louver piece B acts as a barrier, and in the staggered upward flame holes 23, As shown by reference numeral A in FIG. 17, the hot air is allowed to spread to the upper side of the roasting case 1, and in the downwardly facing flame holes 24 of the staggered shape, as shown by reference numeral B, the roasting case 1 The hot air spreads to the central portion of the roasting case 1, and as a result, the temperature distribution in the internal heating of the roasting case 1 is to be made uniform.

[0005]

However, in such a structure, the louver pieces B arranged in a direction substantially perpendicular to the direction of introduction of the secondary air allow the flame holes 18 to be formed.
... gives directivity in the direction in which the hot air spreads, so that the secondary air collides with the louver piece B and becomes turbulent,
In addition to not being able to obtain the predetermined directivity, in the adjacent introduction zones a, b, etc., the secondary air is mixed in the adjacent portions and interferes with each other's directivity, making it difficult to obtain the predetermined directivity. As a result, the wide roasting case 1 has a problem that it is difficult to make the internal temperature uniform.

[0006] The present invention has been made in view of such problems, and an object, the length of the elongated burner
The directionality of the secondary air introduction in each introduction zone in the hand direction is sufficiently maintained, so that even in a wide roasting case, sufficient hot air can be supplied to the central portion thereof, and furthermore, in the adjacent introduction zone, It is an object of the present invention to provide a gas roasting device capable of avoiding interference of secondary air and achieving a uniform temperature distribution.

[0007]

According to a first aspect of the present invention, a long burner disposed on a side portion of a roasting case is provided outside a long burner .
By providing a guide that gives directionality to the direction of secondary air introduction
Both are surfaces perpendicular to the longitudinal direction of the long burner and
Incoming secondary air flow is segmented in the longitudinal direction of the long burner
And a guiding surface for performing the operation .

[0008] Oite to claim 2, one of the introduction zone b
Is set obliquely downward inside the roasting case 1, and the directivity of the adjacent introduction zone a is set substantially horizontally or obliquely upward. .

In the third aspect , the guide 3 has a predetermined distance from the outer surface of the long burner 2a between the guide surfaces S, S adjacent to each other, and the longitudinal direction of the long burner 2a. And a louver piece X for guiding the secondary air obliquely downward from above the long burner 2a is formed. According to a fourth aspect of the present invention, the amount of combustion gas ejected from the introduction zone b whose directivity is directed obliquely downward is set to be larger than that of the introduction zone a whose directivity is directed substantially horizontally or obliquely upward. It is assumed that.

According to a fifth aspect, a pair of long burners 2a and 2b are disposed opposite to each other at a lower portion on both sides of the roasting case 1, and opposed introduction zones a and 2 in the opposed long burners 2a and 2b. b; c and d have different directivities from each other.

[0011]

According to the first aspect, when introducing the secondary air accompanying the combustion in the long burner 2a, the guide 3 is provided with the secondary air.
It gives directionality to the direction of air
The plane perpendicular to the longitudinal direction of the
It has a guide surface that is sectioned and introduced in the longitudinal direction of the burner.
Therefore , it is possible to avoid giving a resistance to the introduction of the secondary air, and it is possible to sufficiently supply the hot air to which the secondary air is supplied and burned to the central portion of the roasting case 1, Even in the roasting case 1 having a wide width, the entire heating can be sufficiently performed. In addition, it is possible to prevent the secondary air in the adjacent introduction zones a and b from interfering with each other. In this respect, the hot air in each of the introduction zones a and b is also transferred to a predetermined location while maintaining its directivity. Can be sufficiently spread to

[0012] Oite to claim 2, the central portion of the bottom of the roasting case 1, performed above the heating side near the roasting case 1, achieve uniform temperature distribution. According to the third aspect , the louver piece X can give the introduced secondary air a directivity obliquely downward, so that the directivity can be further ensured. According to the fourth aspect , a large amount of combustion gas is ejected in the introduction zone b in which the directivity is directed obliquely downward, so that the hot air can sufficiently spread to the central portion of the roasting case 1. The temperature distribution in the inside can be made uniform.

According to the fifth aspect, the temperature distribution in the roasting case 1 is made uniform by the opposing long burners 2a and 2b, and the temperature distribution in the roasting case 1 is formed by the opposing long burners 2a and 2b. Can be further promoted.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view of a gas roaster A. As shown in FIG. It is incorporated as a container. Hereinafter, the configuration of the gas roaster A will be described in detail.

FIG. 2 is an exploded perspective view of the gas roaster A. The roasting case 1 of the gas roaster A has a substantially U-shaped cross section and an upper opening 14 formed in a top plate portion. Case main body 6
A bottom body 7 having a substantially U-shaped cross section with a shallow bottom is vertically opposed, a rear plate 9 is connected to a rear end of such a cylindrical body 8, and a front plate 10 is connected to a front end of the cylindrical body 8. 4, a slit 29 is formed between the case body 6 and the side plate of the bottom body 7, as shown in FIG.
a and 2b are attached to the roasting case 1 and the upper burner 15 is attached to the upper opening 14 of the top plate portion of the case main body 6 so that the inside of the roasting case 1 can be heated.

Lid 2 for opening and closing the front opening of roasting case 1
A water receiving tray 35 is removably mounted on a support frame 11 attached to the support 8, the legs of the grill 12 are mounted on the water receiving tray 35, and the support frame 11 has a rail shape of the cylindrical body 8. 30 and slidably mounted on the cover 28.
The handle 13 can be pulled out forward.
The structure for drawing out the water receiving tray 35 is well known.

Such a gas roaster A is formed to be relatively wide, and even in the wide gas roaster A,
The left and right long burners 2a and 2b and the upper burner 15 make the internal temperature uniform so that good roasting can be performed. Hereinafter, the configuration of the long burners 2a and 2b will be described in detail. FIG. 5 shows a long burner 2a, which is attached to the left side of the roasting case 1.
The long burner 2a is formed into a pipe body 20 by connecting two plate members 16, 17 press-formed into a substantially half-cylindrical shape by welding or the like, and a large number of flame holes 18 are formed in the inner plate member 16,
The combustion gas mixed with the primary air is introduced from the inlet 19 at the rear end of the long burner 2a and can be ejected from the flame holes 18. A secondary air introduction plate 22 having secondary air introduction holes 21 formed therein is caulked and fixed to such a pipe body 20, and the long burner 2a is assembled.

FIG. 7 shows a plate 22 for introducing secondary air. The plate 22 for introducing secondary air includes an upper plate 26 shown in FIG. 9 and a lower plate 27 shown in FIG. Although they are connected with each other by 32, they may be formed in series. A slit-shaped secondary air introduction hole 21 is punched in the upper plate member 26 and the lower plate member 27,
26 around the portion provided with the secondary air introduction hole 21
The guide 3 has a partition plate 3a bent from both ends.
Is provided . The shape and configuration of the secondary air introduction plate 22 can be variously changed. Such a plate for secondary air introduction 22
Are bent so that the end faces of the partition plates 3a.
, The secondary air introduction plate 22 is caulked and fixed to the pipe body 20 and integrated to form a long burner 2a. The long burner 2b disposed on the right side of the roasting case 1 has the same configuration.

As shown in FIG. 11, the pipe body 20 of the long burner 2a installed on the left side of the roasting case 1
Of the flame holes 33 formed in a row at the upper and lower central portions of the plate member 16, the auxiliary flame holes 23 are vertically staggered.
The diameter of the lower auxiliary flame hole 24 is larger than the diameter of the upper auxiliary flame hole 23. Thus, the combustion gas is injected obliquely upward near the side portion of the roasting case 1 from the small upper auxiliary flame hole 23 [FIG.
(See (c) of (a).] In such an introduction zone (a), the hot air spreads to the vicinity of the side of the roasting case (1),
The temperature near the side is sufficiently raised, and a large amount of combustion gas is injected from the lower large-diameter auxiliary flame hole 24 along the bottom body 7 of the roasting case 1 to the center of the roasting case 1. Then, in such an introduction zone b, the hot air spreads to the central part of the roasting case 1 (see reference numeral d in FIG. 14A).

As described above, in the introduction of the secondary air accompanying the combustion in the long burner 2a, the introduction of the secondary air flow is performed.
Guide 3 gives directionality in the direction
In addition, the long burner 2a is guided as a surface orthogonal to the longitudinal direction.
The partition plate 3a having the conducting surface S is used to control the secondary air flow to a long bar.
Since it is sectioned and introduced in the longitudinal direction of the nut 2a ,
It is possible to avoid giving a resistance to the introduction of the secondary air, and to sufficiently introduce the secondary air to the central portion of the roasting case 1. You can do it well. Moreover, it is possible to prevent the secondary air in the adjacent introduction zones a, b ... from interfering with each other. In this respect, the hot air in each of the introduction zones a, b ... Spread to the place.

The pipe body 20 of the long burner 2b installed to the right of the roasting case 1 has a flame hole 18 as shown in FIG.
Of the flame holes 33 formed in a row at the upper and lower central portions of the plate member 16, the auxiliary flame holes 23 are vertically staggered.
4 are formed, of which the lower part (in FIG. 12A,
The auxiliary flame hole 24 is located above the paper surface in the drawing.) The diameter of the auxiliary flame hole 24 is made larger than the diameter of the upper auxiliary flame hole 23, and combustion is performed from the large-diameter lower auxiliary flame hole 24. A large amount of gas is injected along the bottom body 7 of the roasting case 1 to the central portion of the roasting case 1 (see reference numeral e in FIG. 14A),
In such an introduction zone c, the temperature of the central portion of the roasting case 1 is sufficiently increased so that a large amount of hot air spreads to the central portion of the roasting case 1, and a small diameter upper auxiliary flame hole is provided. From 23, combustion gas is injected obliquely upward in the vicinity of the side of the roasting case 1 (see the reference numeral in FIG. 14A), and in such an introduction zone d, the vicinity of the side of the roasting case 1 is provided. Hot air spreads obliquely upward.
Such introduction zones a to d are partitioned by partition plates 3a. Thus, the directivity of the secondary air divided by the partition plates 3a in the introduction zones a, b: c, d is different from that of an adjacent one and different from that of an opposite one.

As described above, since the directivity of the secondary air divided by the guides 3 in the introduction zones a, b: c, d is different from that of the adjacent ones, the introduction zones a, b : It is possible to spread hot air according to the directivity set in c and d, and to achieve a uniform temperature distribution in the roasting case 1. Specifically, the directivity of the introduction zones a and d of the left and right long burners 2a and 2b is set diagonally upward near the side inside the roasting case 1, and the directivity of the adjacent introduction zones b and c is set. Since the property is set slightly downward, hot air is supplied obliquely upward near the side of the roasting case 1, and the hot air is supplied along the bottom body 7 of the roasting case 1. This is because hot air is supplied to the central portion to make the temperature distribution inside the roasting case 1 uniform. Furthermore, since the directivity of the opposing introduction zones a, b, c, and d in the opposing elongate burners 2a and 2b are different from each other, the temperature distribution in the roasting case 1 by the opposing elongate burners 2a and 2b. To promote the uniformity of

The secondary air introducing plate 22 will be described in more detail. The hole 21 for secondary air introduction of the plate 22 for secondary air introduction is
The portions corresponding to the introduction zones a and d are formed in the narrow slits 21a to limit the supply amount of the secondary air, and the secondary air introduction holes 21 correspond to the introduction zones b and c. The part at the point is formed in two thick slits 21b at the top and bottom to make the supply amount of the secondary air sufficient, and in each of the introduction zones a, b: c, d,
Secondary air can be supplied in accordance with the amount of combustion gas.

At a position corresponding to the introduction zones b and c on the upper edge portion of the secondary air introduction plate 22, a horizontal plate-like louver piece X bent obliquely downward is formed, as shown in FIG.
As shown in (b), the secondary air introduced from the upper thick slit 21b is given a directivity obliquely downward, so that the directivity in the introduction zones b and c is further ensured. Such a louver piece X constitutes the guide 3 of the present invention together with the guide surfaces S on both sides of the partition plate 3a, but the louver piece X is not necessarily required.

FIG. 13 shows another embodiment of the long burner, in which the louver piece X is not provided. That is,
The pipe body 20 formed by combining the two plate members 16 and 17 is sandwiched by a substantially U-shaped partition fitting 25 on which the partition plates 3a and 3a are formed, thereby achieving integration. The configuration other than the partition fitting 25 is the same as described above.
The long burner may be provided separately without connecting the guide 3 to the pipe body 20, and each may be fixed.

Further, the pipe body 20 of the long burner is formed by forming a flame hole 18 in a single pipe material, or a pair of metal plates are opposed to each other, and a slit-shaped flame hole is provided between the opposed metal plates. A long ribbon-shaped burner may be used. Further, the long burner may be made of a die cast in which the guide 3 is integrated with the pipe body 20. In addition, the guide 3 and the secondary air introduction plate 22
Alternatively, a long burner may be manufactured by inserting the pipe body 20 into a die-cast product in which is integrated.

[0027]

According to the first aspect of the present invention, a guide for providing directivity in the direction of introducing secondary air is provided outside the long burner disposed on the side of the roasting case.
The plane perpendicular to the longitudinal direction of the
Provide a guide surface that is divided and introduced in the longitudinal direction of the burner.
Because only in that, it is possible to avoid giving the resistance to the introduction of secondary air can be secondary air bring sufficiently to the central portion of the roasting case hot air for combustion is supplied,
Even in a wide roasting case, the entire heating can be sufficiently performed, and in addition, it is possible to avoid interference of the secondary air in the adjacent introduction zones with each other. There is an advantage that the hot air in the above can be sufficiently spread to a predetermined location while maintaining its directivity.

[0028] Oite to claim 2, directivity of one of the introduction zone is set toward the inside of the obliquely downward roasting case, directivity of the introduction zone of the adjacent, toward the substantially horizontal or obliquely upwardly The heating at the center of the bottom of the roasting case and the heating near the side of the roasting case can be sufficiently performed, and the temperature distribution in the roasting case can be made uniform. is there.

According to the third aspect of the present invention, the guide has a plate-like shape in the longitudinal direction of the long burner at a predetermined interval from the outer surface of the long burner between the adjacent guide surfaces, and the secondary air is long. Since the louver pieces that guide obliquely downward from above the shaku burner are formed, the louver pieces can give the incoming secondary air directivity diagonally downward, ensuring more directivity. There is an advantage that can be.

According to the fourth aspect of the present invention, the injection amount of the combustion gas in the introduction zone in which the directivity is directed obliquely downward is set to be larger than that in the introduction zone in which the directivity is directed substantially horizontally or obliquely upward. A large amount of combustion gas is ejected in the introduction zone where the directivity is directed obliquely downward, so that the hot air can sufficiently spread to the central portion of the roasting case, and the temperature distribution in the roasting case 1 can be made uniform. There is an advantage that it can be achieved.

According to the fifth aspect of the present invention , since a pair of long burners are disposed opposite to each other at a lower portion on both sides of the roasting case, the temperature distribution in the roasting case can be made uniform by the opposed long burners. In addition, since the directivity of the opposing introduction zones in the opposing long burners is different from each other, the temperature distribution in the roasting case by the opposing long burners is further promoted to be more uniform. There is an advantage that can be.

[Brief description of the drawings]

FIG. 1 is a perspective view of a roasting case of a gas roaster according to one embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is an external perspective view of the gas cooking device.

FIG. 4 is a partial side view of the roasting case.

FIG. 5 is a perspective view of a left long burner of the above.

6A is a cross-sectional view of an elongated burner in an introduction zone a, and FIG. 6B is a cross-sectional view in an introduction zone b.

FIG. 7 is a perspective view of the secondary air introduction plate before caulking before.

FIG. 8 is a schematic front sectional view showing a positional relationship among the long burner, a water receiving tray, and a grill in the above.

FIG. 9A is a rear view of an upper plate material of a plate for secondary air introduction,
(B) is a bottom view and (c) is a side view.

10A is a front view of a lower plate material, and FIG. 10B is a side view.

11A is a front view of a left long burner pipe body, FIG. 11B is a side sectional view, and FIG. 11C is a partially enlarged front view.

12A is a front view of a pipe body of a right long burner, FIG. 12B is a side sectional view, and FIG. 12C is a partially enlarged front view.

FIG. 13A is a perspective view of another embodiment of the long burner according to the embodiment, and FIG. 13B is a perspective view of a partition fitting.

FIG. 14A is an operation explanatory view showing a state of heating the inside of the roasting case viewed from above, and FIG. 14B is a schematic side sectional view.

15A and 15B are perspective views of a conventional example.

FIGS. 16A and 16B are explanatory diagrams of an operation of a conventional example.

FIGS. 17 (a) and (b) are explanatory diagrams of the operation of the conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Roasting case 2a Long burner 2b Long burner 3 Guide S Guide surface X Louver piece

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-14935 (JP, A) JP-A-58-24714 (JP, A) Fully open Showa 57-150323 (JP, U) Really open Showa 49- 19346 (JP, U) Japanese Utility Model 1-101031 (JP, U) Japanese Utility Model Application 56-66624 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) F23D 14/10 A47J 37 / 06 366 F23D 14/02 F23D 14/30

Claims (5)

(57) [Claims] 1. A guide for providing directivity in a direction of introducing secondary air is provided outside a long burner disposed on a side portion of a roasting case, and is orthogonal to a longitudinal direction of the long burner.
And the secondary air flow is directed in the longitudinal direction of the long burner.
A gas roaster comprising a guiding surface for partitioning and introducing . 2. An introduction zone partitioned by a guide.
Direction of the roaster is directed obliquely downward inside the roasting case.
Is set, and the directivity of the adjacent introduction zone is substantially horizontal or oblique.
The gas roaster according to claim 1, wherein the gas roaster is set upward . 3. The guide is elongated between adjacent guide surfaces.
Keeps a certain distance from the outer surface of the burner and is long
It becomes plate-shaped in the longitudinal direction of the burner, and the secondary air is long
A louver piece that guides obliquely downward from above the burner
The gas roasting device according to claim 1 , wherein the gas roasting device is formed. 4. An introduction zone whose directivity is directed obliquely downward.
When the directivity is approximately horizontal or diagonally upward
More than those in the deployment zone
The gas roaster according to claim 3, characterized in that: 5. A pair of elongated members at the lower part on both sides of the roasting case.
Burners are installed facing each other, and
The directivity of opposing introduction zones is different from each other
The gas roaster according to any one of claims 1 to 4, characterized in that: