JP2007192476A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker capable of effectively decomposing smoke and odor of a cooked object at an initial time in starting cooking by rising a catalyst temperature to an activation temperature in a short time, preventing wasteful opening of a door during cooking and dangerousness attendant thereon by allowing an inside cooking state to be confirmed without opening the door, and achieving efficient cooking heating and desmoking/deodorizing effect. <P>SOLUTION: This heating cooker is composed of an exhaust duct 6 disposed to discharge smoke and odor generated in a cooking chamber 9 to the external, catalysts 17a, 17b disposed in the exhaust duct, and a heating body 18 disposed near the catalysts to activate the catalysts, the heating body is composed of a halogen lamp heater, and its light is introduced to the cooking chamber to be applied as an inside lighting element. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heating cooker such as a roaster provided with a catalyst for removing smoke and odor generated in a cooking chamber.

  Conventionally, a cooking device such as a roaster heats and cooks food to be cooked placed on a grill by energizing cooking heaters provided above and below the cooking chamber. Some of them have a deodorizing and desmoking function in order to reduce and discharge smoke, odor, etc. generated from the food to be cooked.

The structure is a platinum or palladium oxidation catalyst in which a heater that activates the catalyst along with the deodorizing catalyst is placed in the exhaust duct provided at the back of the cooking chamber, and the components of smoke and odorous substances generated are activated by the heater. It was decomposed into carbon dioxide and water and discharged to the outside (see, for example, Patent Document 1). In addition, a sheathed heater or a tube heater has been used as a heater for activating the catalyst.
Japanese Patent No. 3587177

  However, since the sheath heater and tube heater, which are heaters for activating the catalyst, take time to raise the temperature to activate the catalyst by generating heat, smoke and odor components at the beginning of cooking are not effectively decomposed. There is a problem of being discharged outside in the state.

  Further, in the conventional roaster configuration, since the device for illuminating the cooking chamber is not particularly provided, the cooking chamber is dark and it is difficult to confirm the state of the cooked food such as the color of the fish. Therefore, at the time of manual cooking etc., you will open the door one by one during cooking, and each time the temperature in the cooking chamber will decrease, so the heating effect will be worsened and the cooking time will be longer, and the door will be opened. There were safety problems such as the hot air in the room jumping out and causing burns, and problems such as odors and smoke leaking from the door to the kitchen.

  The present invention has been made paying attention to the above problems, and by effectively raising the deodorization catalyst temperature to the activation temperature in a short time, the smoke and odor of the cooked food at the beginning of cooking is effectively decomposed, and the door is opened. To provide a cooking device capable of checking the cooking state in the room without opening it, preventing waste and danger of opening the door during cooking, and obtaining an effective cooking heating and deodorizing deodorizing effect With the goal.

  In order to solve the above problems, a heating cooker according to the present invention includes an exhaust duct provided so as to discharge smoke or odor generated in the cooking chamber to the outside, a catalyst disposed in the exhaust duct, and the vicinity of the catalyst. And a heating element provided to activate the catalyst. The heating element is a halogen lamp heater, and the light is introduced into the cooking chamber to form an indoor lighting body.

  According to the present invention, by using a halogen lamp heater as the heater for activating the catalyst, the catalyst can be raised to the activation temperature in a short time, and the smoke and odor at the beginning of cooking are effectively decomposed. be able to. In addition, the lighting power of the halogen lamp heater allows the situation inside the cooking chamber to be visually recognized from the outside of the door without the need for a dedicated room lamp. Can prevent burns due to popping out, smoke and odor outflow, and efficient cooking.

  Hereinafter, an embodiment in which the present invention is applied to a built-in type cooking device will be described with reference to the drawings.

  FIG. 1 is an external front view showing an overall configuration in which a so-called three-neck type heating cooker (2) is incorporated in a system kitchen (1), and the heating cooker (2) is a countertop of the system kitchen (1). A top plate (3) made of heat-resistant glass is arranged on the same surface as (1a), and the top surface of the top plate (3) has three openings, that is, an annular frame or three colors at the right and left and the center. The heating parts (2a), (2b) and (2c) indicated in FIG.

  In these heating units (2a), (2b) and (2c), induction heating coils as heating sources are provided on the respective lower surfaces of the top plate (3), and a cooking container such as a flat-bottom pan is used as the annular frame or the like. It is equipped with a function for installing and cooking at an appropriate position by the display part of the top plate (3), and at the rearmost part of the top plate (3) is a fish placed inside the lower surface of the top plate (3) An exhaust port (7) communicating with the exhaust duct (6) of the roaster (5) for grilling meat is provided.

  As shown in FIG. 2, the roaster (5) is arranged in a meandering manner in a plane in a cooking chamber (9) formed of a plate (8) that is insulated from the main body. The upper and lower cooking heaters (10a) and (10b), which are pipe heaters, are arranged above and below the room, and the front opening of the cooking chamber (9) closes the opening and allows the cooking chamber (9) to be seen through. A door (11) with a transparent window (11a) made of heat-resistant glass is provided so that it can be pulled out, and the tray (12) can be attached to the inner surface of this door (11) along with a grill (12) that extends into the room. It is attached to the door (11) and pulled out at the same time.

  The saucer (13) is arranged so as to cover almost the entire bottom of the cooking chamber (9), and the grill (12) on which the food is placed is located above the cooking heater (10b) below. It is arranged so that the food (15) such as fish is heated from above and below, and the dripping water or oil is received by the saucer (13) below the cooking heater (10b). . Further, a packing (14) formed of an elastic body such as a heat-resistant resin is attached around the inner surface side of the door (11), and the opening of the cooking chamber (9) is sealed when the door is closed such as during cooking. This prevents smoke and odors from leaking out of the front opening.

  An opening (9a) to the outside air side is formed in the upper rear surface of the cooking chamber (9), and the exhaust port (7) provided on the rear upper surface of the top plate (3) is formed in the rear opening (9a). The exhaust duct (6) having a rectangular cross section formed by a steel plate or the like bent and communicated in an approximately L shape is connected to the opening (9a) on the cooking chamber (9) side of the exhaust duct (6). In the vicinity of), a deodorizing unit (16) is arranged.

  The deodorizing unit (16) includes two plate-shaped deodorizing and deodorizing catalysts a (17a) and b having a predetermined thickness, which are disposed so as to cover the air flow inner surface of the exhaust duct (6) with a space therebetween. (17b) and a halogen lamp heater (18) which is a catalyst heater provided with a space between the catalysts a (17a) and b (17b). The catalyst a (17a) on the cooking chamber (9) side is formed from platinum having a relatively coarse filter shape and a large opening ratio, and the downstream catalyst b (17b) is formed into the catalyst a (17a). On the other hand, it is formed of palladium with a fine eye.

  The halogen lamp heater (18) is heated and controlled to 350 to 400 ° C. by energization. When heat is generated, the catalyst a (17a) and b (17b) are heated and activated to flow down the exhaust duct (6). Smoke and odor components are oxidized and decomposed into carbon dioxide and water, so that the deodorized and deodorized material is discharged to the outside air. The temperature rise time is dramatically faster than conventional sheathed heaters and tube heaters. Is.

  For example, the temperature at which the catalyst a (17a) formed of platinum is activated is 250 to 500 ° C, and the activation temperature of the catalyst b (17b) with palladium is 300 to 700 ° C. In the case of a sheathed heater, the time required for the temperature of the catalyst heater to rise to 250 to 350 ° C. is 2 to 3 minutes, whereas the halogen lamp heater (18) takes about 30 seconds to activate each catalyst. The temperature rises to the cooking temperature, can cope with smoke and odor generated from the cooked food (15) with heating from the initial stage, and can be removed by deodorizing and deodorizing.

  And the catalyst a (17a) of the cooking chamber (9) side makes it easy to pass smoke and odor molecules from the cooking chamber (9) to the downstream side by making the eyes wide and increasing the opening ratio. The catalyst b (17b) made of palladium having a higher activation temperature is arranged on the downstream side in order to cope with the heated room air by the halogen lamp heater (18), and the opening ratio is set on the front side. By making it smaller than the catalyst a (17a), the adsorptive decomposition action of smoke and odorous substances is increased.

  Further, if the catalysts a (17a) and b (17b) and the heater (18) are close to each other, the temperature of the catalyst rises unevenly, so that the catalyst ( A predetermined space is provided between 17a) and 17b and the halogen lamp heater (18).

  This halogen lamp heater (18) has a strong luminous intensity as well as a calorific value, and is too dazzling as it is, but is moderately dimmed by the coarseness of the catalyst a (17a) arranged on the cooking chamber side. By introducing light into the cooking chamber (9), the interior is illuminated with light that is gentle on the eyes, and without the door (11) being pulled out, the transparent window (11a) provided in the door (11) The baked color and other cooked items (15) can be checked from the outside, and the downstream catalyst b (17b) is used to prevent light from leaking from the rear exhaust port (7). So as not to cause anxiety.

  In the above configuration, when cooking, the grill (12) is pulled out together with the door (11) of the roaster (5), and the food (15) such as fish is placed on the grill (12) and the door (11) is placed. By pushing and closing, the grill (12) is set between the upper and lower cooking heaters (10a) and (10b) on the tray (13). Then, when cooking starts, the upper and lower cooking heaters (10a) and (10b) are energized to start cooking, and at the same time, the halogen lamp heater (18) is energized. While heating and baking, the inside of the cooking chamber (9) is illuminated by the light of the halogen lamp.

  At this time, the halogen lamp heater (18) quickly rises in temperature, heats the catalysts a (17a) and b (17b) to the activation temperature, and smoke and odor generated by baking the cooked food (15) Then, it flows into the exhaust duct (6) from the rear opening (9a), and first, smoke and odor components are decomposed and attenuated by the catalyst a (17a) on the cooking chamber side. Further, the smoke and odor that have passed through the catalyst a (17a) are further heated by the halogen lamp heater (18) and further decomposed by the downstream catalyst b (17b), and are effectively deodorized and deodorized. The air can be discharged to the outside from the exhaust port (7) of the cooker body.

  The inside of the cooking chamber (9) is illuminated by the light of the halogen lamp heater (18), which is a catalyst heater, with the catalyst a (17a) as a filter. The catalyst a (17a) is omitted, and a thin plate (19) provided with a number of holes such as heat-resistant punching metal is provided in the rear opening (9a) of the cooking chamber (9) as shown in FIG. Thus, the shade of the light from the halogen lamp heater (18) may serve as the cover of the opening (9a).

Note that the halogen lamp heater (18) has a large influence on the surface of the bulb made of quartz glass, and even in the case of, for example, fingerprint-like dirt, Due to the devitrification phenomenon in which crystals are precipitated, there is a problem in that the corresponding portion of the bulb is distorted and the strength is significantly degraded. In order to cope with this, in this embodiment, the bulb surface is coated with, for example, boric acid (B ₂ O ₃ ), which is translucent and has the same thermal expansion coefficient as that of the bulb of the halogen lamp heater (18). Therefore, a very thin coating of borosilicate glass is formed on the valve surface, and impurities such as oil and salt generated during cooking and heating do not adhere directly to the valve surface, so the valve becomes a high temperature of 800 to 1200 ° C. But I try not to devitrify.

  In addition, the activation temperature of the halogen lamp heater (18) and the catalysts (17a) (17b) is provided by providing a temperature detector (20) between the catalysts a (17a) and b (17b) in the deodorizing unit (16). In addition to monitoring the abnormal temperature in the cooking chamber (9) and exhaust duct (6), etc., the energization of the halogen lamp heater (18) is controlled, and the control panel on the front is abnormal. May be notified.

  Next, another embodiment of the present invention will be described. FIG. 4 is a longitudinal sectional view of the roaster (25) as in FIG. 2, and in this embodiment, the exhaust duct (26) and the deodorizing unit (36) are cooked as shown in FIG. A perforated plate (39) made of punched metal, slit heat-resistant resin, or thin metal is provided in the ceiling (29a) provided in the ceiling of the chamber (29) and communicating with the exhaust duct (26) The halogen lamp heater (18) similar to the above is installed on the exhaust duct (26) side of the upper part. In addition, a catalyst (37) similar to that of the above-described embodiment is disposed in a predetermined space from the halogen lamp heater (18) at the upper portion thereof, and is heated by the heat of the halogen lamp heater (18). .

  With the above configuration, since the opening (29a) is provided larger in the ceiling part having a larger area than the back part of the cooking chamber (29), the inflow area of the exhaust gas from the cooking chamber (29) to the deodorizing unit (36) is increased. Compared to the above embodiment, the area of the catalyst (37) can be increased and the deodorizing ability can be improved. In addition, the exhaust resistance can be further reduced to improve the deodorization efficiency, and the irradiation area of the halogen lamp heater (18) can be increased to illuminate the entire cooking chamber (29), and the light source can be directly seen by the eyes. Since it does not enter, it has the effect of eliminating glare.

It is an appearance front view of a cooking heater which is one embodiment of the present invention. It is a schematic longitudinal cross-sectional view which shows the roaster part in FIG. It is a schematic sectional drawing which shows the other Example of the deodorizing unit part in FIG. It is a schematic longitudinal cross-sectional view of the roaster part which shows the further another Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 System kitchen 1a Countertop 2 Heating cooker 2a, 2b, 2c Heating part 3 Top plate 5, 25 Roaster 6, 26 Exhaust duct 7 Exhaust port 8 Plate body 9, 29 Cooking chamber 9a, 29a Opening 10a, 10b Cooking heater
11 Door 11a Transparent window 12 Grill
13 saucer 14 packing 15 cooked food
16, 36 Deodorizing unit 17a Catalyst a 17b Catalyst b
18 Halogen lamp heater 19, 39 Perforated thin plate
20 Temperature detector 37 Catalyst

Claims (6)

  An exhaust duct provided to discharge smoke or odor generated in the cooking chamber to the outside, a catalyst provided in the exhaust duct, and a heating body provided to activate the catalyst in the vicinity of the catalyst Thus, the heating body is a halogen lamp heater, and the light is introduced into the cooking chamber to form an indoor lighting body.   2. The cooking device according to claim 1, wherein a halogen lamp heater is provided on the ceiling of the cooking chamber.   The cooking device according to claim 1 or 2, wherein the catalyst is disposed at least inside the cooking chamber of the halogen lamp heater.   4. The cooking device according to claim 3, wherein the catalyst is disposed before and after the halogen lamp heater, and the opening ratio of the catalyst on the cooking chamber side is larger than that on the outside air side.   The heating cooker according to any one of claims 1 to 4, wherein a plate body provided with a number of holes or slits is disposed in a wall surface opening of a cooking chamber communicating with an exhaust duct. The cooking device according to any one of claims 1 to 5, wherein the surface of the halogen lamp heater is coated with a boric acid film.

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