JP4312756B2 - Smokeless pottery - Google Patents

Description

  The present invention relates to a smokeless pottery for cooking foods such as fish such as ovens, stove grills and the like.

An example of this type of pottery is a grill provided in a gas stove. The grill is provided with a smoke discharge passage communicating with the top of the gas stove from the rear of the grill cabinet, and an afterburner as a heating source for smoke burning is provided on the ceiling near the entrance of the smoke discharge passage. Some burners burn out the smoke flowing into the smoke discharge passage and smoke and bromide the smoke discharged outside the grill.
For example, the grill of the gas stove shown in FIG. 7 is provided with a cooking burner 91 in the ceiling portion of the grill cabinet 90, and the smoke discharged from the rear upper part of the grill cabinet 90 to the exhaust port 93 of the top of the gas stove. A passage 92 is formed. An afterburner 94 is provided on the ceiling surface near the entrance of the smoke discharge passage 92. In this case, as shown by the arrows in FIG. 7, smoke generated from the food cooked by the cooking burner 91 is roasted by the afterburner 94 when flowing into the smoke discharge passage 92, so that no smoke is generated.・ It is not brominated.

Further, in the grill shown in FIG. 8, baffle plates 95 and 96 orthogonal to the flow of smoke are provided at the position where the afterburner 94 is disposed (FIG. 4 of Patent Document 1). The one baffle plate 95 is suspended from the afterburner 94 leaving a gap for allowing smoke to pass to the lower end side, and the other baffle plate 96 is spaced from the one baffle plate 95 by a predetermined distance in the depth direction of the passage. And projecting upward from the bottom surface of the passage leaving a gap for allowing smoke to pass through to the upper end side. These baffle plates 95 and 96 disturb the flow of smoke passing below the afterburner 94, and unburned components contained in the smoke are uniformly heated by the afterburner 94 and burned out.
Japanese Patent No. 2588824 Japanese Examined Patent Publication No. 6-103107 (FIG. 1)

  By the way, in the grill shown in FIG. 7, in order to completely roast the smoke flowing through the smoke discharge passage 92, the after burner 94 is required to have a strong heating power and a flame head length. In other words, in order to heat and roast not only the smoke flowing near the heating surface of the afterburner 94 but also the smoke flowing in the lower position away from the afterburner 94, the area of the afterburner 94 is increased to some extent. It is necessary to let out strong firepower. In this case, the amount of gas consumed in the afterburner 94 is increased, so that it has been difficult to configure the grill for so-called energy saving.

  On the other hand, in the grill shown in FIG. 8, the smoke discharge passage 92 is made as narrow as possible by the upper and lower baffle plates 95 and 96 to disturb the flow of smoke and heat the smoke evenly, but on the other hand, the smoke passes. Since the vertical width of the smoke discharge passage 92 is narrowed by the baffle plates 95 and 96, the flow of smoke passing below the afterburner 94 becomes faster. In addition, it is necessary to narrow the width of the smoke discharge passage 92, and the exhaust resistance increases, which adversely affects the combustion of the burners 91 and 94. Therefore, even in this case, in order to completely burn out the unburned components contained in the smoke, it is necessary to increase the area of the afterburner 94 and to generate a certain amount of strong thermal power. The amount of gas consumed by the afterburner 94 It was difficult to suppress.

  On the other hand, in any of the grills described above, when the cooking burner 91 and the afterburner 94 are configured integrally, the heating power of the large-area cooking burner 91 increases as the heating power of the afterburner 94 increases. Therefore, since the heating capacity becomes larger than necessary as a whole, it has been more difficult to construct an energy-saving grill with reduced gas consumption.

  In addition, in an electric heating cooker such as an oven microwave oven, there is also known an apparatus for purifying oil smoke generated during cooking by providing a purification catalyst body and an auxiliary heater for heating the catalyst body in an exhaust passage (Patent Document) 2) Since this product requires an exhaust fan to remove oily smoke, it is difficult to construct an energy-saving grill with reduced energy consumption.

  This invention is made | formed in view of the said situation, and makes it a subject to implement | achieve the smokeless pottery device which smokelessly and bromides most of the smoke which generate | occur | produced in the baking store | warehouse | chamber, even if it suppresses energy consumption.

(1) A smokeless pottery device according to the first aspect of the present invention includes a cooking heat source disposed in a ceiling portion of a baking chamber, a smoke discharge passage leading from the rear upper portion of the baking chamber to the outside, and the smoke discharge passage. In a pottery comprising a heating source for smoke burning disposed in the vicinity of the entrance,
The heating source for cooking and the heating source for smoke burning are set so that the smoke flowing into the smoke exhaust passage is directed downward and then raised from below the heating source for smoke burning toward the heating source for smoke burning. A shield plate hanging from the ceiling on the firing chamber side is provided at the boundary, and a guide portion is provided at the lower portion of the entrance of the smoke discharge passage so as to face the shield plate, and the guide portion and the shield plate are used for the heating for smoke firing. Form a guide passage facing the source ,
The guide passage is in contact with the heating surface of the smoke burning heat source as the smoke flowing into the guide passage flows straight from the lower side of the smoke burning heating source to the surface of the smoke burning heating source. It is characterized by having been configured .
According to this, smoke generated from food materials such as fish cooked by the heating source for cooking in the baking chamber hits the front surface of the shielding plate when flowing into the smoke discharge passage and is once directed downward. Next, the smoke that has flowed downward passes through the lower end of the shielding plate, and then is prevented from diffusing by the guide portion, flows into the guide passage between the guide portion and the shielding plate, and rises in the guide passage. . As a result, the smoke that is about to flow into the smoke discharge passage is guided to the guide passage that faces the smoke burning heat source and straight from the lower side of the smoke burning heat source to the surface of the smoke burning heating source. And abuts on the heating surface of the smoke burning heating source. Therefore, most of the unburned components contained in the smoke are burned out by the smoke-burning heat source without increasing the area of the smoke-burning heat source or increasing the heating amount.
Moreover, since the smoke in the combustion chamber does not flow linearly into the smoke discharge passage by the shielding plate or the guide passage, the discharge of smoke from the firing chamber is suppressed by that amount. The hot air can be prevented from being discharged to the outside together with the smoke.

(2) Moreover, the cooking heat source and the smoke heating source may be integrally formed.
In this case, as described above, most of the unburned components contained in the smoke can be burned out by the smoke-burning heat source without making the smoke-burning heat source large capacity. Even if the source and the simple structure are integrated, energy consumption does not increase.

(3) Moreover, you may make it arrange | position the said guide part in the back end vicinity of the said smoke-burning heating source, and to be longer below the said shielding board.
Thereby, regardless of the shape of the smoke discharge passage, the smoke in the baking chamber is guided to the guide passage between the shielding plate and the guide portion, and the smoke combustion heat source is reliably It can be raised towards the heating surface.

(4) Moreover, the vertical length of the shielding plate may be set in a range of 30 to 50 mm.
Thereby, the flow which raises to the heating surface of the heat source for smoke burning from the lower part of the heat source for smoke combustion sufficient to burn out smoke reliably with the heat source for smoke combustion can be formed.

(5) The smokeless pottery device according to the second aspect of the present invention includes a cooking heat source disposed in a baking chamber, a smoke discharge passage that leads from the rear upper part of the baking chamber to the outside, and the vicinity of the inlet in the smoke discharge passage. In a pottery comprising a catalyst body for smoke purification disposed in
The inlet of the smoke discharge passage is formed in the rear upper part of the baking chamber, in parallel with the ceiling portion of the baking chamber,
Provided shielding plates depending from the ceiling portion between the firing chamber and the smoke discharge passage to form a guide passage of smoke between the firing chamber and the smoke discharge passage,
In the vicinity of the inlet of the smoke discharge passage, above the lower end of the shielding plate, facing the catalyst body, the catalyst body is heated, and the smoke flowing into the guide passage is heated to touch the catalyst. An electric heater to be raised toward the medium is provided separately from the cooking heat source,
The guide passage is configured to direct smoke flowing from the baking chamber into the smoke discharge passage downward along the shielding plate, and then pass through the lower end of the shielding plate and directly below the catalyst body at the inlet of the smoke discharge passage. It is characterized in that the flow is directed straight toward the catalyst body surface from below and is brought into substantially uniform contact with the catalyst body surface .
According to this, smoke generated from foods such as fish cooked by the cooking heat source in the baking chamber hits the front surface of the shielding plate when flowing into the smoke discharge passage, and is temporarily directed downward. Passes through the lower end of the shielding plate and flows into the guide passage, and then the smoke flowing into the guide passage is heated by the electric heater and rises toward the catalyst body by a draft action.
In this way, the smoke that is about to flow into the smoke discharge passage is guided to the lower side of the guide passage by the shielding plate, and then is raised by increasing the draft action by the heating of the electric heater. The flow is directed straight from the lower side of the catalyst body disposed in the vicinity of the inlet to the catalyst body surface and can be brought into contact with the catalyst body surface substantially uniformly.
In addition, the electric heater only heats the smoke, and does not burn the smoke and generate the combustion gas unlike the heating source for smoke burning (for example, an afterburner). It can increase effectively and the passage resistance of a catalyst body can be canceled. Moreover, by eliminating the smoke-burning heat source, oxygen is not consumed by the combustion of the smoke-burning heat source, the ratio of oxygen in the catalyst body can be maintained high, and the smoke purification action (smoke and (Oxidizing function of odor) can be effectively exhibited. In addition, the energy consumption of the heat source for smoke burning can be reduced.
Therefore, the smoke flowing into the smoke discharge passage can pass almost uniformly against the surface of the catalyst body, and most of the unburned components contained in the smoke are purified by the catalyst body so that it is smokeless and bromide-free. Can do.
Furthermore, since the electric heater is provided separately from the cooking heat source and is provided in the vicinity of the inlet of the smoke discharge passage so as to face the catalyst body, the draft in the smoke discharge passage at the initial stage of ignition of the cooking heat source is reduced. Even when it is difficult to work, the flow of smoke generated from the food to the smoke discharge passage can be made smooth by the draft increasing effect by heating of the electric heater. In addition, by making the electric heater face the catalyst body, not only the smoke but also the catalyst body is heated uniformly, so that the purification action of the catalyst body can be exerted highly from the beginning of ignition of the cooking heat source. Therefore, even in the early stage of ignition of the cooking heat source, the smoke can be reliably purified by the catalyst body and can be made smokeless and bromide-free.

(6) In the smokeless pottery according to the present invention 2, the smoke discharge passage may have an upward slope. This Ri I, along with also the draft increases action by the heating of the electric heater, at the same time when the smoke flows into the smoke discharge passage becomes smooth, so the inflow of secondary air into the firing chamber becomes smooth, cooking heating Even in the early stage of ignition of the source, incomplete combustion of the cooking heat source can be prevented and its combustion performance can be maintained high.

(1) According to the smokeless pottery device according to the first aspect of the present invention (claims 1 to 4), the smoke that is about to flow into the smoke discharge passage is guided to the guide passage that faces the heating source for smoke combustion. From the lower part of the heat source for heating, a flow directed straight toward the surface of the smoke burning heat source is brought into contact with the heating surface of the smoke burning heat source. Thus, most of the unburned components contained in the smoke can be burned out by the smoke burning heat source without increasing the area of the smoke burning heat source or increasing the heating amount. And since the discharge | emission of the smoke of a baking store | warehouse | chamber is suppressed by the said shielding board and the said guide passage, it can suppress that the hot air in this baking store | warehouse | chamber is discharged | emitted with the said smoke outside. Thereby, the heating efficiency in a baking chamber can be improved.
Therefore, a smokeless pottery device that emits smoke generated from food materials without smoke or bromide can be configured to save energy.

(2) According to the smokeless pottery device according to the second aspect of the present invention (Claims 5 and 6), the smoke that is about to flow into the smoke discharge passage rises by increasing the draft action by the heating of the electric heater, and the catalyst body The flow is directed straight to the catalyst body surface from directly below the surface of the catalyst body and is substantially uniformly contacted with the catalyst body surface, and by eliminating the heat source for smoke burning (for example, an after burner), The ratio of oxygen in the catalyst body can be kept high.
Therefore, most of the unburned components contained in the smoke flowing into the smoke discharge passage are purified by the catalyst body and can be made smokeless and non-bromide. Moreover, by eliminating the smoke-burning heat source, the energy consumption of the smoke-burning heat source can be reduced. As a result, smoke-free pottery that emits smoke generated from foods without smoke or bromide is configured for energy saving. be able to.

Embodiments of the present invention will be described below with reference to the drawings.
1. Embodiment 1 (Claims 1 to 4)
FIG. 1 shows a vertical cross-sectional configuration of a gas stove 2 provided with a smokeless grill 1 (hereinafter also including odorless) as a smokeless pottery device according to Embodiment 1 of the present invention. Although not shown in detail in FIG. 1, a stove portion is formed on the top plate of the gas stove 2 and a stove burner is disposed. The operation lever or operation button provided on the front surface of the gas stove 2 is used to operate the stove. The burner can be extinguished and adjusted. The smokeless grill 1 is provided at a substantially central portion of the gas stove 2 so that ingredients to be cooked can be taken in and out from the front side.

As shown in FIG. 1, the smokeless grill 1 is formed such that a grill box 3 (baking box) that is a space for cooking food is opened in front of the gas stove 2, and the opening is a freely openable and closable grill door. 4 is closed. The grill cabinet 3 is a substantially rectangular parallelepiped space surrounded by a steel wall except for the front opening, and the grill door 4 has heat-resistant glass fitted in the center of a rectangular frame in plan view. It is a thing.
On the lower side of the grill cabinet 3, a tray 5 to which a grill net (not shown) for placing fish to be cooked is attached is provided. The saucer 5 is a rectangular dish slightly narrower than the bottom surface of the grill cabinet 3, and when cooking ingredients, the grill door 4 is opened, the saucer 5 is pulled out, the ingredients are placed on the grill net, and the saucer 5 is returned again. Like that.

  In addition, a cooking burner 6 (heating source for cooking) and an afterburner 7 (heating source for smoke burning) are provided on the ceiling of the grill 3. The cooking burner 6 is a so-called infrared burner and is not shown in detail in FIG. 1, but is supplied with fuel gas mixed with combustion air to the cooking burner 6 and fuel on the surface of the flame formation plate. When the gas is directly ignited by a spark discharge of a spark plug (not shown) and burned, the plate is heated red, and the food is heated by the radiant heat. On the other hand, the afterburner 7 burns smoke generated by heating cooking of foods and does not smoke or bromide, and is composed of an infrared burner like the cooking burner 6. As shown in FIG. 1, the cooking burner 6 is arranged so as to occupy most of the saucer 5 stored in the grill 3, whereas the afterburner 7 is configured so as to occupy most of the cooking burner 6. Is located near the inlet 8a of the smoke discharge passage 8 to be described later. Moreover, since the said after burner 7 is arrange | positioned just above the upper surface back part of the said saucer 5, a foodstuff can be heated with the radiant heat also by this after burner 7. FIG. Thereby, without increasing the cooking burner 6, the heat efficiency can be increased and the food can be cooked.

The cooking burner 6 and the afterburner 7 are integrally formed as a burner, and as shown in FIG. 2, these flame outlets 6a and 7a are formed continuously and provided in front of the gas stove 2. The fire extinguishing and the heating power adjustment are simultaneously performed by the operated lever or operation button, and the misfire sensor (not shown) is also shared.
As shown in FIG. 1, a smoke discharge passage 8 communicating with the outside from the gas stove 2 is formed in the upper rear portion of the grill cabinet 3. The smoke discharge passage 8 has an opening formed at the upper rear part of the grill cabinet 3 as an inlet 8a, and extends upward from a substantially horizontal passage formed continuously behind the inlet 8a to the top of the gas stove 2. It is connected to the exhaust port 9 at the rear of the plate and opened to the outside. The exhaust port 9 is covered with an exhaust cover K.

  When the cooking burner 6 and the afterburner 7 are ignited and the inside of the grill cabinet 3 is heated, a draft action occurs, and air enters the grill cabinet 3 through a gap or the like below the grill door 4. Smoke in the grill 3 passes through the smoke discharge passage 8 and is discharged from the exhaust port 9 to the outside. Although not shown, by providing a catalyst in the vicinity of the exhaust port 9 of the smoke discharge passage 8, the smokeless odorless effect of the smoke discharged from the exhaust port 9 can be further ensured.

  Further, in the vicinity of the inlet 8 a of the smoke discharge passage 8, a shielding plate 10 is provided so as to hang from the front side of the grill cabinet 3 from the afterburner 7, that is, from the ceiling portion at the boundary between the cooking burner 6 and the afterburner 7. Has been. As shown in FIG. 3, the shielding plate 10 is a rectangular thin plate made of steel or stainless steel having a width substantially the same as that of the grill cabinet 3, and has good fire transfer at the connecting portion of the cooking burner 6 and the afterburner 7. Therefore, a notch 10a is formed. Further, the height of the shielding plate 10, that is, the vertical length T of the shielding plate 10 suspended from the ceiling of the grill cabinet 3, causes the smoke flowing in the smoke discharge passage 8 to be directed downward, and then the smoke is removed. It is set to a length that is sufficient to raise from a lower position almost directly below the burner 7 toward the heating surface of the afterburner 7. For example, the length T is preferably set to 30 to 50 mm so that the unburned components of the smoke are surely burned out by the afterburner 7 and are smokeless and non-brominated. Such a shielding plate 10 is fixed to the ceiling portion of the grill cabinet 3 by known fixing means such as screwing or welding. The grill cabinet 3 is housed in the gas stove 2, and the height from the stove foot to the top plate is 180 mm. For this reason, the height from the bottom plate of the grill cabinet 3 to the ceiling is naturally determined.

  A guide portion 12 is provided at the lower portion of the inlet 8 a of the smoke discharge passage 8 so as to face the shielding plate 10. A guide passage 80 that faces the afterburner 7 is formed by the guide portion 12 and the shielding plate 10. Similar to the shielding plate 10, the guide portion 12 is formed of a steel or stainless steel rectangular flat plate having substantially the same width as the grill 3. Further, the guide portion 12 is formed longer than the lower end of the shielding plate 10 and is positioned behind the rear end portion of the after burner 7 and in the vicinity of the rear end portion of the after burner 7. Be placed. That is, the guide portion 12 shown in FIG. 1 is provided to reach the bottom plate of the grill 3 from the lower portion of the inlet 8a of the smoke discharge passage 8 on the back side (rear side) of the tray 5.

Next, the flow of smoke in the smokeless grill 1 will be described.
As shown in FIG. 4, the smoke generated when cooking the food by heating with the cooking burner 6 in the grill cabinet 3 is caused by the draft action along the ceiling portion of the grill cabinet 3 to the smoke discharge passage 8 on the back side. It flows toward. The smoke comes into contact with the front surface of the shielding plate 10 on the front side of the after burner 7 and the flow temporarily stays there, but flows out downward along the shielding plate 10 so as to be pushed out by the subsequent smoke flow. . Then, after passing through the lower end of the shielding plate 10, diffusion is suppressed by the guide portion 12, flows into the guide passage 80 between the guide portion 12 and the shielding plate 10, and rises in the guide passage 80. That is, the smoke ascends from a lower position almost directly below the afterburner 7 toward the heating surface of the afterburner 7. The rising smoke is heated while rising toward the heating surface of the afterburner 7 and in contact with the heating surface of the afterburner 7, and most of the unburned components contained in the smoke are burned out. At this time, since the guide portion 12 is disposed behind the rear end portion of the afterburner 7 and in the vicinity of the rear end portion of the afterburner 7, the guide portion 12 is formed by the shielding plate 10 and the guide portion 12. The front and rear width of the guide passage 80 is slightly wider than the front and rear width of the afterburner 7. Therefore, the smoke that has flowed into the guide passage 80 is more uniformly heated from above by the afterburner 7 more reliably. Further, since the shielding plate 10 is heated by the radiant heat of the afterburner 7, the smoke is also burned by the radiant heat from the shielding plate 10 when the smoke moves upward along the shielding plate 10 and rises again. In this way, most of the unburned components of the smoke are burned out, smokeless and brominated, and discharged from the exhaust port 9 to the outside through the smoke discharge passage 8.

Moreover, since the smoke in the grill 3 is not linearly flown into the smoke discharge passage 8 by the shielding plate 10 or the guide passage 80, the smoke discharge in the grill 3 is suppressed accordingly. It is possible to suppress the hot air in the grill 3 from being discharged to the outside together with the smoke.
As described above, according to the smokeless grill 1, smoke flowing into the smoke discharge passage 8 is controlled by the shielding plate 10 and the guide portion 12 to raise the inside of the guide passage 80. Since it directly and forcibly contacts the afterburner 7, the smoke can be burned out without smoke and without bromination without increasing the heating power of the afterburner 7. Moreover, by suppressing the discharge of smoke from the grill 3 by the shielding plate 10 and the guide passage 8, it is possible to suppress the hot air in the grill 3 from being discharged to the outside together with the smoke. Thereby, the heating efficiency in the grill warehouse 3 can be improved. Therefore, the smokeless grill 1 that emits smoke generated from the food without smoke or bromide can be configured to save energy.
In addition, this invention is not limited only to said smokeless grill 1, It is possible to change a design suitably in the range of this invention.

For example, like the smokeless grill 1 a shown in FIG. 5, the afterburner 7 ′ may be disposed behind the rear part of the tray 5 and does not heat the upper surface of the tray 5. In this case, since the afterburner 7 ′ becomes a dedicated burner for burning smoke, all of the heating amount can be used for the combustion of smoke, and smokeless and bromide can be more reliably realized.
In the first embodiment and the modified example, the rear end portion of the afterburner 7 (7 ′) is arranged behind the rear end portion of the afterburner 7 (7 ′) as the arrangement position of the guide portion 12 in the front-rear direction. However, as long as it is in the vicinity of the rear end portion of the after burner 7 (7 ′), it may be disposed in front of the rear end portion of the after burner 7 (7 ′). In this case, the front-rear width of the guide passage 80 is slightly narrower than the front-rear width of the afterburner 7 (7 ′), but the smoke that has flowed into the guide passage 80 is entirely removed from above by the afterburner 7 (7 ′). It can be heated uniformly.

In addition, the guide portion is not limited to the guide portion 12, and may be configured in a plate shape that is suspended from the lower portion of the inlet 8 a of the smoke discharge passage 8 so as to face the shielding plate 10.
In addition, it is good also as a double-sided grille in which cooking burners are arranged on both the upper and lower sides. In the first embodiment, etc., the grill portion of the gas stove is used, but other various pottery devices such as an oven may be used.

  Table 1 shows that in the configuration of the smokeless grill 1 (having a height from the stove to the top plate of 180 mm), an infrared burner of about 350 kcal / h is used as the after burner 7, and the length of the shielding plate 10 in the vertical direction is shown. FIG. 5 shows the results of evaluating smoke removal and no bromide of smoke discharged from the smoke discharge passage 8 when the fish is cooked by changing the length T as appropriate. In the comparative example, the shielding plate 10 is not provided in the smokeless grill 1. In smokelessness, the color of the smoke discharged from the smoke discharge passage 8 is visually confirmed, and when there is almost no white color, it is determined that the smoke is completely smokeless. This is a stepwise process. Bromide-free means that the odor of smoke discharged from the smoke discharge passage 8 is determined by the sense of smell of a plurality of people.

表１に示したように、遮蔽板１０の鉛直方向の長さＴが３０ｍｍ以上で無煙化、無臭化が実現されることがわかる。従って、約３５０ｋｃａｌ／ｈの赤外線バーナをアフターバーナ７とした無煙グリル１において、無煙無臭化を確実に実現するには鉛直方向の長さＴが３０ｍｍ以上の遮蔽板１０を配設することが好適である。一方、グリル庫３の大きさ等（ガスコンロ等のグリルの標準サイズ、例えば、コンロ足から天板までの高さが１８０ｍｍ）を考慮すれば、遮蔽板１０が受け皿５の食材に接触しない程度の長さとすることが好ましく、具体的には５０ｍｍ以下である。

As shown in Table 1, it can be seen that smoke-free and bromide-free are realized when the vertical length T of the shielding plate 10 is 30 mm or more. Therefore, in the smokeless grill 1 in which the infrared burner of about 350 kcal / h is used as the afterburner 7, it is preferable to arrange the shielding plate 10 having a vertical length T of 30 mm or more in order to surely realize smokeless and bromide-free. It is. On the other hand, considering the size of the grill 3 (standard size of the grill such as a gas stove, for example, the height from the stove to the top plate is 180 mm), the shielding plate 10 is not in contact with the ingredients of the tray 5. The length is preferably 50 mm or less.

2. Embodiment 2 (Claims 5 and 6)
FIG. 6 shows the configuration of the smokeless grill according to the second embodiment of the present invention.
The smokeless grill 1b does not have an afterburner, and a smoke purifying catalyst body 13 is disposed in the vicinity of the inlet 8a in the smoke discharge passage 8 provided at the upper rear portion of the grill (burning) 3. ing. The smoke discharge passage 8 has an inlet 8a formed in parallel with the ceiling of the grill cabinet 3, and has an upward slope inclined rearward from the inlet 8a. Therefore, the smoke flowing into the smoke discharge passage is oxidized by the catalyst body 13 to be smokeless and non-brominated. Various known materials are used as the catalyst body 13. For example, a material in which a metal such as platinum or palladium is supported on a honeycomb-shaped ceramic is used, and the catalyst body 13 is located near the inlet 8 a in the smoke discharge passage 8. It is installed to cover almost the whole.

  Further, a shielding plate 10 ′ suspended from the ceiling between the grill 3 and the smoke discharge passage 8 is provided, and the rear wall of the smokeless grill 1 b is used as a guide portion 12. Between them, a smoke guide passage 80 is formed. The guide passage 80 faces the catalyst body 13 at the smoke discharge passage inlet 8a upward. The shielding plate 10 ′ is not provided with a notch 10a as in the first embodiment (FIG. 3), and a thin plate made of, for example, steel or stainless steel is bent into an L shape. Installed on the ceiling.

  The guide passage 80 is provided with an electric heater 14 that heats the smoke flowing into the guide passage 80 and raises it toward the catalyst body 13. The electric heater 14 is provided in the vicinity of the smoke discharge passage inlet 8a above the lower end of the shielding plate 10 'so as to face the catalyst body 13. Thereby, the smoke that has flowed into the guide passage 80 can be heated uniformly, and the catalyst body 13 can be heated uniformly. As the electric heater 14, for example, a plurality of heating wires arranged in parallel at a pitch of 3 to 10 mm in the surface direction of the catalyst body, or one or a plurality of sheathed heaters arranged in the surface direction of the catalyst body Is used. Corrosion resistance can be improved by using a sheathed heater.

  The smokeless grill 1b is provided with a bunsen combustion type lower fire burner (heating source for cooking) 16 on both the left and right side surfaces of the grill cabinet 3, and the lower fire burner 16 and the upper fire burner (of the first embodiment). This is a double-sided grill with a grill net 15 disposed in the middle between the upper and lower positions of 6) (equivalent to a cooking burner). Other configurations are the same as those of the first embodiment, and in FIG. 6, the same reference numerals as those in FIGS. 1 to 5 are the same as or correspond to those.

  Next, the flow of smoke from the ingredients in the smokeless grill 1b will be described. Smoke generated from ingredients such as fish cooked by the upper fire burner 6 and the lower fire burner 16 in the grill warehouse 3 is shown in FIG. As indicated by the arrow, when it flows into the smoke discharge passage 8, it hits the front surface of the shielding plate 10 ′ and is once directed downward, and the smoke that has flowed downward passes through the lower end of the shielding plate 10 ′ and enters the guide passage 80. Then, the smoke flowing into the guide passage 80 is heated by the electric heater 14 and rises toward the catalyst body 13 by a draft action.

As described above, the smoke that is about to flow into the smoke discharge passage 8 is guided to the lower side of the guide passage 80 by the shielding plate 10 ′, and then is raised by increasing the draft action by the heating of the electric heater 14. The flow is directed straight from the lower side of the catalyst body 13 disposed near the inlet 8a in the smoke discharge passage 8 to the catalyst body surface, and can be brought into contact with the catalyst body surface substantially uniformly. .
Further, the electric heater 14 only heats, and does not burn smoke and generate combustion gas unlike the afterburner 7 of the first embodiment, so that the drafting action is effectively increased. Thus, the passage resistance of the catalyst body 13 can be offset. That is, the draft action is not reduced by the increase in the pressure of the smoke exhaust passage 8 due to the increase in combustion exhaust gas in the afterburner 7 and the passage resistance due to the catalyst body 13. Moreover, by eliminating the afterburner 7, oxygen is not consumed by the combustion of the afterburner 7, the ratio of oxygen in the catalyst body 13 can be maintained high, and the smoke purification action (smoke and odor of the catalyst body 13) (Oxidizing function) can be effectively exhibited. Further, since the electric heater 14 imparts a draft action by heating to the smoke in the guide passage 80, it does not affect the energy consumption as compared with the afterburner 7, so the afterburner. 7 gas energy consumption can be reduced.
Therefore, the smoke flowing into the smoke discharge passage 8 can be made to substantially abut against and pass through the catalyst body surface of the catalyst body 13, and most of the unburned components contained in the smoke are purified by the catalyst body 13, Smokeless and bromide-free.

  Further, since the electric heater 14 is provided in the guide passage 80, even when the draft to the smoke discharge passage 8 at the initial stage of ignition of the upper fire burner 6 and the lower fire burner 16 is not effective, the draft is increased by the heating of the electric heater 14. The flow of smoke generated from the food to the smoke discharge passage 8 can be performed smoothly. In addition, by arranging the electric heater 14 facing the catalyst body 13 in the surface direction of the catalyst body 13, not only the smoke but also the catalyst body 13 is heated uniformly, whereby the purification action of the catalyst body 13 is improved by the upper burner. 6 and the lower fire burner 16 can be made highly effective from the beginning of ignition. Therefore, even in the initial ignition stage of the upper fire burner 6 and the lower fire burner 16, smoke can be reliably purified by the catalyst body 13 so as to be smokeless and non-bromide.

  In addition, since the flow of smoke into the smoke discharge passage 8 becomes smooth and the flow of secondary air into the grill warehouse 3 becomes smooth, the lower flow burner 16 of the Bunsen combustion method, in particular, at the initial stage of ignition. It is possible to prevent incomplete combustion of the fire burner 16 and maintain its combustion performance high.

  As described above, according to the smokeless grill 1b according to the second embodiment, the smoke that flows right below the shielding plate 10 ′ and further flows into the smoke discharge passage 8 is drafted by the heating of the electric heater 14. The effect is increased and the flow is increased, and the flow is directed straight from the lower side of the catalyst body 13 toward the catalyst body surface, and is brought into contact with the catalyst body surface substantially uniformly, and the afterburner 7 is eliminated. Thus, the ratio of oxygen in the catalyst body 13 can be maintained high. Therefore, most of the unburned components contained in the smoke flowing into the smoke discharge passage 8 are effectively purified by the catalyst body 13 and can be made smokeless and non-brominated. In addition, by eliminating the afterburner 7, the energy consumption of the afterburner 7 can be reduced, and as a result, the smokeless grill 1b that emits smoke generated from the food without smoke and bromide can be configured to save energy.

The electric heater 14 is disposed in the vicinity of the inlet 8a of the smoke discharge passage 8 so as to face the catalyst body 13, but may be disposed at an appropriate position in the guide passage 80.
Further, the length of the shielding plate 10 ′ may be set as appropriate.
Further, the smokeless grill 1b may be a single-sided grill with only the upper fire burner 6 as in the first embodiment, or may be applied as a pottery such as an oven other than a gas stove.

It is a side view which shows schematic structure of the smokeless grill which concerns on Embodiment 1 of this invention. It is a top view which shows arrangement | positioning of the flame mouth of a cooking burner, and the flame mouth of an afterburner. It is a perspective view which shows the structure of a shielding board. It is a side view which shows the flow of the smoke in a smokeless grill. It is a side view which shows the structure of the smokeless grill which concerns on a modification. It is a side view which shows schematic structure of the smokeless grill which concerns on Embodiment 2 of this invention. It is a vertical side view which shows the gas stove provided with the conventional grill. It is a side view which shows the structure of the conventional grill provided with the baffle plate.

Explanation of symbols

1, 1a, 1b Smokeless grill 3 Grill cabinet 6 Cooking burner (upper burner, cooking heat source)
7,7 'Afterburner (heat source for smoke burning)
8 Smoke discharge passage 8a Inlet 10, 10 'Shield plate 12 Guide portion 13 Catalytic body 14 Electric heater 16 Lower fire burner (heating source for cooking)
80 Guide passage

Claims (6)

A heating source for cooking disposed on the ceiling of the baking chamber, a smoke discharge passage from the rear upper portion of the baking chamber to the outside, and a heating source for smoke baking disposed in the vicinity of the inlet of the smoke discharge passage In a pottery comprising
The heating source for cooking and the heating source for smoke burning are set so that the smoke flowing into the smoke exhaust passage is directed downward and then raised from below the heating source for smoke burning toward the heating source for smoke burning. A shield plate hanging from the ceiling on the firing chamber side is provided at the boundary, and a guide portion is provided at the lower portion of the entrance of the smoke discharge passage so as to face the shield plate, and the guide portion and the shield plate are used for the heating for smoke firing. Form a guide passage facing the source,
The guide passage is in contact with the heating surface of the smoke burning heat source as the smoke flowing into the guide passage flows straight from the lower side of the smoke burning heating source to the surface of the smoke burning heating source. Smokeless pottery, characterized in that it is configured. The smokeless pottery device according to claim 1,
A smokeless pottery device in which the heating source for cooking and the heating source for smoke are integrally formed. The smokeless pottery according to claim 1 or 2,
The smokeless pottery device, wherein the guide portion is disposed in the vicinity of the rear end of the smoke burning heating source and is formed to be longer than the shielding plate. The smokeless pottery device according to any one of claims 1 to 3,
The smokeless pottery set with the vertical length of the shielding plate set in a range of 30 to 50 mm. A heating source for cooking disposed in the baking chamber, a smoke discharge passage leading from the rear upper part of the baking chamber to the outside, a catalyst body for smoke purification disposed in the vicinity of the inlet in the smoke discharge passage, In a pottery comprising:
The inlet of the smoke discharge passage is formed in the rear upper part of the baking chamber, in parallel with the ceiling portion of the baking chamber,
Provided shielding plates depending from the ceiling portion between the firing chamber and the smoke discharge passage to form a guide passage of smoke between the firing chamber and the smoke discharge passage,
In the vicinity of the inlet of the smoke discharge passage, above the lower end of the shielding plate, facing the catalyst body, the catalyst body is heated, and the smoke flowing into the guide passage is heated to touch the catalyst. An electric heater to be raised toward the medium is provided separately from the cooking heat source,
The guide passage is configured to direct smoke flowing from the baking chamber into the smoke discharge passage downward along the shielding plate, and then pass through the lower end of the shielding plate and directly below the catalyst body at the inlet of the smoke discharge passage. A smokeless pottery, characterized in that the flow is directed straight from the bottom toward the surface of the catalyst body and is brought into substantially uniform contact with the surface of the catalyst body . Smokeless pottery vessel smokeless Te pottery vessel odor, upper Kikemuri discharge passage to the upward slope of claim 5.

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