JP2943270B2 - Grill with catalyst - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a grill with a catalyst for grilling fish.

2. Description of the Related Art A conventional grill with a catalyst will be described with reference to FIGS. FIG. 5 is a longitudinal sectional view of a main part of a first conventional example of a conventional grill with a catalyst. The grill storage 1 is box-shaped,
A burner mounting plate 2 is attached so as to cover the grill storage 1. A gas infrared burner 4 having a heat radiation plate 3 using a ceramic plate having a large number of combustion holes is provided on the upper surface of the burner mounting plate 2. The gas infrared burner 4 is installed such that the combustion surface 5 faces the bottom surface of the grill storage 1. An exhaust hole 6 is provided on the upper surface of the burner mounting plate 2 behind the gas infrared burner 4. The exhaust cylinder 7 surrounding the periphery of the exhaust hole 6 is cylindrical. A catalyst mounting plate 8 is provided at the outlet of the exhaust stack 7. A catalyst body 9 is placed on the catalyst mounting plate 8. A grill plate 10 is placed on the bottom surface of the grill storage 1, and a grill 11 is placed on the grill plate 10. An object to be cooked 12 is placed on the grill 11. FIG. 6 shows a partial plan view of the catalyst body 9. The catalyst body 9 has a large number of diagonal lattices 13, and the opening area per lattice 13 is set to 38 to 41 mm ² .
When the grill is used in the above configuration, the gas infrared burner 4 is burned to heat the object 12 to be cooked. Food 12
The exhaust gas containing oil smoke and the like generated from the exhaust gas passes through the exhaust pipe 6 from the exhaust hole 6, passes through the catalyst body 9, and is exhausted.

Next, a second conventional example will be described. FIG. 7 is a longitudinal sectional view of a main part of a second conventional example. The difference from the first conventional example is that the exhaust hole 6 is provided on the rear rear surface of the burner mounting plate 2, and the exhaust tube 7 is bent upward at a right angle from the exhaust hole 6. Further, the catalyst mounting plate 8 and the catalyst body 9 are installed obliquely at the center of the exhaust pipe 8. The catalyst body 9 has a large number of hexagonal lattices 13, and differs in that the opening area of each lattice 13 is set to ²⁰ to 22 mm ² . In the second conventional example, similarly to the first conventional example, when the grill is used, the gas infrared burner 4 is burned to heat the object 12 to be cooked.
Exhaust gas containing oil smoke and the like generated from the cooking object 12 is exhausted from the exhaust hole 6 through the exhaust pipe 7 and the catalyst 9.

SUMMARY OF THE INVENTION However, in the first and second conventional examples of the conventional grill with a catalyst, the catalyst 9 is installed at the outlet of the exhaust pipe 7 or the exhaust passage, and one of the grids of the catalyst 9 is provided. opening area per the smaller the 38～41Mm ² or 20~22mm ^2,, exhaust gas discharged from the grill undergoes a large pressure loss. For this reason, when the grill is used for a long time by mistake and the cooking object 12 such as fish and the oil from the cooking object 12 ignite, the exhaust gas is suppressed by the pressure loss and the cooking is performed in the grill storage 1. Things cause incomplete combustion. Because of that,
Immediately after the ignition of 12, the flames appear to be safe without coming out of the exhaust holes, but a large amount of exhaust gas containing oil smoke and the like that has not burned in the grill storage 1 is discharged from the exhaust stack 7. Exhausted exhaust gas is mixed with a sufficient amount of oxygen,
When the temperature of the discharged exhaust gas rises to the spontaneous ignition temperature, the exhaust gas causes secondary combustion above the exhaust stack 7. Since the exhaust gas diffuses to some extent when exhausted from the exhaust stack 7, there is a problem that the flame formed by the secondary combustion spreads greatly and causes the generation of a flame.

Therefore, an object of the present invention is to provide a grille with a catalyst that does not cause secondary combustion above the exhaust stack 7 even when an object to be cooked such as fish ignites.

Means for Solving the Problems In order to achieve the above object, the present invention provides a catalyst body having a large number of grids in an exhaust part, and has an opening area per grid of the catalyst body of 60 mm ^{2 to} 80 mm ² Then, the thickness of the catalyst body is set to 5 mm to 15 mm.

The grill with a catalyst of the present invention has a reduced pressure loss of exhaust gas discharged from the grill due to the above configuration,
Therefore, even if the grill is accidentally used for a long time and the cooking object such as fish and oil from the cooking object ignite, the cooking object does not cause incomplete combustion in the grill storage and exhaust gas is exhausted. Does not cause secondary combustion above the cylinder.

Example Hereinafter, an example of a grill with a catalyst of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a main part of a grill with a catalyst according to a first embodiment of the present invention. The grill storage 21 is box-shaped, and the burner mounting plate 22 is a grill storage.
It is installed to cover 21. Burner mounting plate
A burner fitting hole 23 is provided on the upper surface of 22. The burner fitting hole 23 is provided with a gas infrared burner 25 having a heat radiation plate 24 using a ceramic plate having a large number of combustion holes. The combustion surface 26 of the gas infrared burner 25 is
It is installed so that it may face the bottom of. Between the gas infrared burner 25 and the burner fitting hole 23, a burner holder 27 made of metal and having an L-shaped cross section is installed in order to prevent the ceramic plate from dropping. An exhaust unit 28 is provided behind the gas infrared burner 25. The exhaust part 28 includes an exhaust hole 29 provided on the upper surface of the burner mounting plate 22 behind the gas infrared burner 25 and a cylindrical exhaust tube 30 provided so as to surround the periphery of the exhaust hole 29. Catalyst mounting plate at outlet of exhaust stack 30
A catalyst body 32 is mounted on the catalyst mounting plate 31. The catalyst body 32 has a large number of grids 33, and the opening area per grid 33 is set to 60 to 65 mm ² . Lattice 33
2 is shown in FIG. A grill plate 34 is placed on the bottom of the grill storage 21. A grill 35 is placed on the grill plate 34, and an object 36 to be cooked is placed on the grill 35. When the grill is used, the gas infrared burner 25 is burned to heat the object 36 to be cooked. Exhaust gas including oil smoke and the like generated from the cooked food 36 passes through the exhaust pipe 29 through the exhaust hole 29, and is catalyzed.
It is configured to be exhausted after passing through 32.

In the first embodiment, the pressure loss of the exhaust gas discharged from the grill is reduced by setting the opening area per grid 33 to 60 to 65 mm ² in the above configuration,
Therefore, if you use the grill by mistake for a long time,
Even if the oil from the cooking object 36 ignites, the cooking object 36 does not cause incomplete combustion in the grill storage, and the exhaust gas does not cause secondary combustion above the exhaust stack 30. In addition, when the catalyst mounting plate 31 and the catalyst body 32 are removed in the above-described configuration, when the cooking object 36 such as fish and the oil from the cooking object 36 ignite, the flame coming out of the exhaust stack 30 has no pressure loss. Although it blows up to a height of several tens of centimeters, the flame is dispersed by the pressure loss and the grid 33 of the catalyst body 32 by installing the catalyst body 32, and the exhaust stack 30
The height of the flame coming out can be kept low. FIG. 3 shows the relationship between the opening area per lattice 33 of the catalyst body 32 and the purification rate of carbon monoxide. In FIG. 3, the horizontal axis represents the opening area per one of the lattices 33 of the catalyst body 32, and the vertical axis represents the quantitative ratio of carbon monoxide and carbon dioxide in the exhaust gas. It indicates that the purification rate to carbon dioxide is high. In FIG. 3, since the purification rate of carbon monoxide draws a substantially parabola having a minimum of 55 to 80 mm ² , the opening area per grid 33 is 60 to 80 mm ² .
When it is set to 65 mm ² , stable and good purification performance of carbon monoxide to carbon dioxide can be obtained regardless of the total area of the catalyst body 32.

Next, a second embodiment of the present invention will be described. FIG. 4 is a longitudinal sectional view of a main part of a grill with a catalyst according to a second embodiment of the present invention. The difference between the second embodiment and the first embodiment is that the exhaust hole 29 is provided on the rear rear surface of the burner mounting plate 22, and the exhaust pipe 30 is bent upward from the exhaust hole 29, and the catalyst mounting plate 31 The catalyst body 32 is provided at the inlet of the exhaust stack 30. In the second embodiment, as in the first embodiment, the opening area per grid 33 is 60 to 65 mm ^2.
, The pressure loss received by the exhaust gas discharged from the grill is reduced, so that the grill is accidentally used for a long time, and the food 36 such as fish and the oil from the food 36 are ignited. Even in this case, the object to be cooked 36 does not cause incomplete combustion in the grill storage 21, and the exhaust gas does not cause secondary combustion above the exhaust stack 30. Also, in the above configuration, the catalyst mounting plate 31
When the catalyst body 32 is removed and the cooking object 36 such as fish and the oil from the cooking object 36 ignite, the flame coming out of the exhaust pipe 30 blows up to a height of several tens of cm because there is no pressure loss, By disposing the catalyst body 32, the flame is dispersed by the pressure loss and the lattice 33 of the catalyst body 32, and the height of the flame exiting from the exhaust stack 30 can be suppressed low. Also, as shown in FIG. 3, as in the first embodiment, the opening area per grid 33 is set to 60 to
When it is set to 65 mm ² , stable and good purification performance of carbon monoxide to carbon dioxide can be obtained regardless of the total area of the catalyst body 32.

As described above, in each embodiment of the present invention, the opening area of the grid of the catalyst body is set to 60 mm ² which can prevent secondary combustion or the like above the exhaust stack.
As described above, the intended purpose can be achieved by setting the upper limit for purifying carbon monoxide to 80 mm ² .

The catalyst mounting plate 31 and the catalyst body 32 are installed at the outlet of the exhaust stack 30 in the first embodiment, and are installed at the inlet of the exhaust stack 30 in the second embodiment. The same effect can be obtained regardless of the location at the entrance or the center.

Although the thickness of the catalyst body 32 is set to 8 to 9 mm in both examples, the same effect can be obtained even in the range of 5 to 15 mm.

Although the shape of the lattice 33 of the catalyst body 32 is a rectangular lattice in both embodiments, the same effect can be obtained with a square lattice, a hexagonal lattice, a circular lattice, and an oblique lattice.

Effects of the Invention As described above, the following effects are obtained in the grill with catalyst of the present invention.

(1) The pressure loss received by the exhaust gas discharged from the grill is reduced, so that the grill may be used incorrectly for a long time,
Even when the object to be cooked such as fish and the oil from the object to be ignited, the object to be cooked does not cause incomplete combustion in the grill storage, and the exhaust gas does not cause secondary combustion above the exhaust stack.

(2) If the catalyst mounting plate and the catalyst body are removed, and the food such as fish and the oil from the food ignite, the flame coming out of the exhaust stack blows up to a height of several tens of centimeters because there is no pressure loss. However, by arranging the catalyst body, the flame is dispersed by the pressure loss and the grid of the catalyst body, and the height of the flame coming out of the exhaust stack can be suppressed low.

(3) Good and stable purification performance of carbon monoxide to carbon dioxide can be obtained regardless of the total area of the catalyst body.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part of a grill with a catalyst according to a first embodiment of the present invention, FIG. 2 is a plan view of the same grill, and FIG. FIG. 4 is a vertical sectional view of a main part of a grill with a catalyst according to a second embodiment of the present invention, and FIG. 5 is a main part of a first conventional example of a grill with a conventional catalyst. FIG. 6 is a partial plan view of the same lattice, and FIG. 7 is a vertical sectional view of a main part of a second conventional example of a conventional grill with a catalyst. 28 ... exhaust part, 32 ... catalyst body, 33 ... lattice.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshio Akamatsu 1006 Kadoma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. (72) Inventor Hirofumi Kawaguchi 1006 Kazuma, Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-55-96820 (JP, A) JP-A-2-102707 (JP, A) JP-A-48-609 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24C 15/20

Claims (1)

(57) [Claims] 1. A catalyst body having a large number of grids is installed in an exhaust part, and an opening area per grid of the catalyst body is set to 60 mm ² to 8 mm.
To 0 mm ^2, catalyst-grill set the thickness of the catalyst bodies 5 mm to 15 mm.