JP2000070759A - Smokeless roaster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a smokeless roaster having such construction that when deodorizing material of a deodorizing means is installed in mid-way of an exhaust route once, its function is semipermanently kept without renewing it, and also eye-irritating materials can be converted into other harmless mate rial. SOLUTION: A smokeless roaster 6 provided with at least a combustion part, an exhaust route 3 having an annular suction port 2 in the upper, outer peripheral part thereof, and an electric precipitating means 4 interposed in mid-way of the exhaust route 3 is manufactured. As a deodorizing means 5 of the smokeless roaster 6, a light source 7 and a deodorizing catalyst C activated by light from the light source are combined and incorporated into the exhaust route 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a smokeless roaster incorporating a deodorant in the middle of an exhaust passage.

[0002]

2. Description of the Related Art Conventionally, a smokeless roaster having the above structure has been
For example, it is known from JP-A-5-329059.
According to this known technique, there is an effect that it is not necessary to guide the exhaust gas generated at the time of grilling meat to the outdoors to disperse the odor contained therein.

[0003]

However, since the deodorizing means uses zeolite as a deodorant, the adsorbing ability of odor-generating components decreases with the elapse of use time. There is a problem that can not be omitted. In addition, during cooking, there is a problem that chemical substances that stimulate the fundus (hereinafter referred to as fundus stimulating substances), for example, aldehyde compounds, are generated from the smokeless roaster, which hurt the eyes of people around the smokeless roaster.

[0004] The inventors of the present invention have made intensive studies to provide a smokeless roaster that does not require semi-permanent renewal of the deodorant and that does not generate fundus irritants, and uses a specific deodorant. At the same time, the present inventors have found that the deodorant should be activated when the smokeless roaster is used, and completed the present invention.

Accordingly, an object of the present invention is to make it possible to semipermanently maintain the function of the deodorizing means without renewing the deodorizing material of the deodorizing means once incorporated at the start of use of the smokeless roaster and to stimulate the fundus. An object of the present invention is to provide a smokeless roaster having a structure that does not diffuse materials to the outside.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an exhaust passage having a combustion section, an annular suction port in an upper peripheral portion thereof, and an electric power inserted in the exhaust passage. In a smokeless roaster having at least a dust collecting means and a deodorizing means, a means is adopted in which the deodorizing means comprises a light source and a deodorizing catalyst activated by light from the light source.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the most preferred embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIG. 5, the basic structure of a smokeless roaster 6 according to the present invention is different from that of the prior art. Similarly, the casing-like frame 11
A cooking device 14 is dropped into a hole 13 provided at the center of a table-like cooking table 12 fixed to the upper end of the cooking device 12, and an exhaust pipe 15 for forming an exhaust passage 3 in the cooking device 14. Has a connected structure.

The cooking device 14 includes an outer pot 16, an inner pot 17 inserted at a predetermined interval from the outer pot 16 to form a part of the exhaust passage 3, and an inner pot 17.
, A gas burner 20 installed in the inner pot 17 so that the combustion unit 1 is located at the upper center of the water tank 18, and a radiator plate 19 fixed above the gas burner 20. And a top ring 22 having an annular suction port 2 which is annularly arranged at a predetermined interval in an upper part on the outer peripheral side of the inner side of the inner pot 17 or the water tank 18 and at an upper portion of an outer peripheral side of the inner part. Have been.

Further, the top ring 22 closes a space between the upper ends of the outer shuttle 16 and the inner shuttle 17 to form an upstream passage wall of the exhaust passage 3. A fan 23 is inserted downstream of the exhaust passage 3. When the fan 23 is driven, the fan 23
An exhaust including smoke, an odor causing substance, and a fundus irritant generated during the grilling of the meat on the grill 1 is exhausted to the outside of the smokeless roaster 6 through the exhaust passage 3.

In the smokeless roaster 6 according to the present invention having the above-described structure, the electric dust collecting means 4 and the deodorizing means 5 are further incorporated in the exhaust pipe 15 as the exhaust passage 3. As shown in FIGS. 2 and 3, the electrostatic precipitating means 4 includes a honeycomb-shaped electrode 9 formed by converging a cell-shaped space 24 formed by partitioning a cross section by a grid-shaped partition wall 29, and each cell-shaped electrode 9. And a rod-shaped electrode 10 inserted into the center of the space 24. The tip of the rod-shaped electrode 10 is slightly sharpened or tapered, and is located at a position lower than the upper end face of the honeycomb-shaped electrode 9.

The rod-shaped electrode 10 is implanted on an electrode support plate 26 fixed to the honeycomb-shaped electrode 9 via an insulator 25 having a predetermined length. The electrode support plate 26 is provided with a plurality of strip-shaped cutout holes 27 at predetermined intervals so that a fluid flowing through the exhaust passage 3 passes therethrough. In the present invention, the partition 29
Are formed from metal plates, their spacing is about 15-
The rod-shaped electrode 10 is made of carbon or metal and has a diameter of about 1 to 8 mm. Therefore, a relatively high voltage can be applied, and as a result, dust collection efficiency can be increased.

As shown in FIG. 1, the odor means 5 has a honeycomb-shaped catalyst carrier 28 for allowing exhaust gas to flow in a certain direction.
And a light source 7 disposed at a predetermined interval on one or both sides of the carrier 28, which are fixed to the exhaust pipe 15 via a support 29. The catalyst carrier 28 is made up of a plurality of porous materials such as fiber aggregates and foams, and a deodorizing catalyst C having a function of decomposing a fundus irritant can be carried therein. As the deodorizing catalyst C, a titanium-based catalyst activated by light, such as titanium oxide, is preferably used.

When the smokeless roaster 6 having the above structure is used in grilled meat dishes and grilled fish dishes in the same manner as in the prior art,
The hot air containing the odor and the fundus irritant rises above the rostrum 21. When the fan 23 is driven, the hot air is sucked from the annular suction port 2 of the top ring 22, flows through the exhaust pipe 15, and is exhausted to the outside of the smokeless roaster 6.

When the hot air flows through the exhaust pipe 15, the exhaust pipe 15 incorporates the electric dust collecting means 4 and the deodorizing means 5, so that dust containing oil, soot and the like in the hot air is first removed from the honeycomb. When passing between the rod-shaped electrode 9 and the rod-shaped electrode 10, it is charged by the discharge between the rod-shaped electrode 10 and the honeycomb-shaped electrode 9, is captured by the electrodes, and eventually is placed on the tray 8 placed below them. Fall.

Next, the hot air that has passed through the electric dust collecting means 4 passes through the deodorizing means 5, and at this time, a plurality of stages of catalyst carriers 28 are provided.
Pass through. At that time, the catalyst carrier 28 absorbs the odor-causing substance and the fundus irritant and makes it contact with the deodorizing catalyst C to react with the oxygen in the hot air to convert it into another substance. Originally, the catalyst performance tends to decrease with the passage of time. However, since the catalyst carrier 28 is irradiated with light from the light source 7, in addition to the effect of suppressing the performance decrease of the deodorizing catalyst C,
During that time, the effect of activating the deodorizing catalyst C is added. As a result, the deodorizing means 5 is temporarily replaced with the smokeless roaster 6.
When installed in a deodorant catalyst C semi-permanently without renewal
Function can be maintained.

Further, in the present invention, since a titanium-based photocatalyst is used as the catalyst, the fundus irritant can be returned to other substances, and as a result, people who cook around the smokeless roaster or eat It does not hurt the eyes of others. In order to confirm this effect, the present inventors conducted a cooking experiment of a smokeless roaster using a titanium oxide catalyst as a deodorizing catalyst C, and how much formaldehyde, acetaldehyde, acrolein and the like as fundus irritants could be removed. Experimented.

[0017]

[Experimental example] 30 pieces on the Rostor 21 having a diameter of 300 mm
Barbecue dishes were cooked over 10 minutes on a 3000 kcal burner with 0 g of beef with sauce. The deodorizing means 5 used at this time is, as shown in FIG.
8, that is, a catalyst carrier 28 having a thickness of 20 mm on the outside.
a, and a catalyst carrier 28b having a thickness of 40 mm is disposed at an interval of 30 mm on the inner side, and two ultraviolet lamps having a wavelength of 300 to 350 nm are interposed therebetween as the light source 7. Met.

The electric dust collecting means 4 used in the same manner is
A honeycomb-shaped electrode 9 (height: 100 mm) in which 49 cell-shaped spaces 24 formed by a 2 mm partition wall 29 in a square having a side of 250 mm, and a rod-shaped electrode having a diameter of 3 mm and a length of 100 mm 10, and the distance between the honeycomb electrode 9 and the electrode support plate 26 was 40 mm. Note that a fan 23 having a displacement of 3.5 cubic meters / minute was provided downstream of the exhaust passage 3.

During this grilled meat dish, the exhaust passage 3 is located upstream of the electrostatic precipitator 4 (measuring point A), between the electric precipitator 4 and the deodorizing catalyst 5 (measuring point B), and downstream of the deodorizing catalyst 5. The exhaust gas on the side (measurement point C) was sampled, and the amount of dust in the exhaust gas, the content of all hydrocarbons as an odor-causing substance, and the content of formaldehyde as an ocular fundus irritant were measured.

As a result, the amount of dust at the measurement point A is 23
mg / cubic m, 40 ppm total hydrocarbons, 4.5 ppm formaldehyde, and at measurement point B
2 mg / cubic m, 40 ppm, formaldehyde 4.
It was 5 ppm (Comparative Experimental Example).

On the other hand, at measurement point C, the amount of dust was 0.02 mg / m 3, the total amount of hydrocarbons was 18 ppm, and the amount of formaldehyde was 0.4 ppm (experimental example of the present invention). It has been found that the experimental examples of the present invention have remarkably superior deodorizing effects and eye fundus irritating substance removing effects.

The present invention can be carried out by partially modifying the above-described embodiments within a range that does not significantly impair the effects of the present invention following the fundamental technical idea thereof. For example, a compound other than titanium oxide can be used as the deodorizing catalyst C as long as it can remove a fundus irritant and can be activated by light.

Further, as shown in FIG. 4, the catalyst carrier 2 is so arranged that the light from the light source 7 can reach the catalyst carrier 28 more effectively.
A light reflection plate 30 may be provided between the light guides 8 to prevent light from leaking to the outside and to make it easier to enter the catalyst carrier 28. Further, the number of the light sources 7 interposed between the catalyst carriers 28 can be made larger than two.

[0024]

As described above in detail, according to the present invention, the function of the deodorizing means of the deodorizing means once incorporated in the smokeless roaster can be maintained semi-permanently without renewal, and the ocular fundus irritant can be smokeless. It has an excellent effect of changing it to other harmless substances without discharging it out of the roaster system.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a deodorizing means incorporated in a smokeless roaster of the present invention.

FIG. 2 is a schematic perspective view of an electric dust collecting means similarly incorporated.

FIG. 3 is a sectional view of a main part of the electric dust collecting means.

FIG. 4 is a schematic view showing another embodiment of the deodorizing means.

FIG. 5 is a schematic sectional view of a smokeless roaster according to the present invention.

[Description of sign]

 DESCRIPTION OF SYMBOLS 1 Combustion part 2 Annular suction port 3 Exhaust passage 4 Electric dust collecting means 5 Deodorizing means 6 Smokeless roaster 7 Light source 9 Honeycomb electrode 10 Rod electrode C Deodorizing catalyst

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F24C 15/20 F24C 15/20 E

Claims (3)

[Claims] An exhaust passage (3) having an annular suction port (2) in an upper outer peripheral portion thereof, an electric dust collecting means (4) interposed in the exhaust passage, and a combustion section (1). In a smokeless roaster (6) having at least a deodorizing means (5), the deodorizing means (5) comprises a light source (7) and a deodorizing catalyst (C) activated by light from the light source. A smokeless roaster characterized by the following: 2. The smokeless roaster according to claim 1, wherein the deodorizing catalyst (C) is a titanium compound. 3. The smokeless roaster according to claim 1, wherein said electric dust collecting means comprises a honeycomb-shaped electrode and a rod-shaped electrode inserted into a center of a space of said electrode. .