JP3426591B2 - Heating cooker - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker equipped with a carbon lamp heater (hereinafter abbreviated as carbon heater) using a sintered body of a carbon material as a heating element, and more particularly to a grilled meat cooker and a griller. Is.

[0002]

2. Description of the Related Art As a conventional heating cooker for heating and cooking food by using electric energy, various types of cookers are widely used depending on the application. For example, for household use, there are roasters for baking fish, oven toasters and ovens for baking bread, hot plates for grilled meat and chicken, and the like. For business use, dedicated cookers for grilled meat, yakitori, hamburgers, etc. are commercially available. As a heater used in these heating cookers, there are a nichrome wire heater, a lamp type heater such as a halogen lamp using a tungsten wire resistor, and a sheathed heater in which a resistor is enclosed in a metal tube such as SUS. A heating cooker using these heaters has problems such as insufficient radiant energy and a slow heating rate of the heater.
Moreover, since the wavelength of radiant light (peak wavelength) with the largest radiant energy is different from the wavelength of light that is easily absorbed by water and organic substances in food, it is unsuitable for directly heating food with radiant heat. There are many things. A cross-sectional view of a conventional cooking device 100 is shown in FIG. In the figure, four heaters 102 are arranged on the lower side of the net 106 on which the food 106A to be heated is placed and on the inner side surface of the cooking device 100. The heater 102 is, for example, a nichrome wire housed in a quartz glass tube. On the front of the heater 102,
A heat resistant glass plate 105 is attached so as to have an opening 107 at the top. A reflector 104 having an upper opening 108 and a lower opening 109 is provided behind the heater 102.

[0003]

In the structure shown in FIG. 10, since the opening 107 is formed in the upper portion of the heat-resistant glass plate 105, the net 1
The scattered matter from the food product 106A on 06 enters through the opening 107 and adheres to the heater 102. The alkaline component in the scattered material reacts with the quartz glass tube at high temperature to cause the transparent quartz glass tube to become devitrified and cloudy. Therefore, the amount of radiated light decreases. Further, since the heater 102 is surrounded by the heat-resistant glass 105 and the reflecting plate 104, heat dissipation is bad and the heater becomes extremely hot. An object of the present invention is to provide a heating cooker using a carbon heater in which these problems are solved.

[0004]

The cooking device of the present invention comprises:
At least one side portion in the stove inner box for heating the food to be cooked, and at least one provided below the food to be cooked
One of the heater, the radiant heat of the heater to direct the foods, so as to form an opening Oite, the upper portion between the reflective plate provided in the vicinity of the heater, and the heater and the the food
Heat plate and transmitting light disposed substantially vertically, maintaining a predetermined gap between the refractory plate which transmits the light, and the position of the upper end portion of the heat-resistant plate having a lower end for transmitting the light It is placed so that it is at the same or lower position, and the adjusted
It is characterized by having a shield plate that shields the heater from scattering of scattered materials from the physical object . According to the invention, the heater is
It is shielded by a light-transmitting heat-resistant plate in front of the heater and a shield plate arranged so that the lower end portion is equal to or lower than the position of the upper end portion of the light-transmitting heat-resistant plate, and is generated during food processing. The scattered matter does not adhere to the heater. Further, since the reflection plate near the heater is not contaminated with scattered materials, the radiant light of the heater and the reflection performance of the reflection plate do not deteriorate even if the heating cooker is continuously used, and the heating efficiency does not decrease. . Further, since the scattered matter does not adhere, it is possible to realize a heating cooker which does not require cleaning of the heater or the reflector and requires less maintenance.

In the heating cooker according to another aspect of the present invention, as the heater, at least one round bar or flat plate-shaped heating element of a sintered body of a carbonaceous material is sealed in a quartz glass tube, and no heat is generated inside. A carbon heater filled with active gas is used. Since the exothermic temperature of the exothermic body formed of the sintered body containing the carbon-based substance is in the range of 1000 ° C to 1500 ° C, the peak wavelength of the radiated light is easy to absorb the organic substances and water constituting the food. It is almost the same as the wavelength of light. Therefore, the radiant light is efficiently absorbed by the food and the heating time is shortened, which has an energy saving effect. Since the surface of the heating element is carbon, its emissivity is close to that of a black body, and its radiant energy is large, making it ideal for heating food. The carbon substance on the surface of the heating element has the same effect as the charcoal heating, and the taste of the heat-processed food is as delicious as the charcoal heating. Further, if a plate-shaped heating element is used as the heating element and the surface of the heating element is directed toward the heating object, more efficient heating can be realized.

A heating cooker according to still another aspect of the present invention is
At least one heater is provided in a rectangular parallelepiped heater housing formed of a metal plate having openings on the front and bottom surfaces thereof, and a reflector is provided on the rear surface in the vicinity of the heater to blow air into the heater housing. It has a control plate. The heater housing is arranged at a distance from the side surface of the stove inner box, and has a structure in which the entire heater housing can be attached and detached. According to this configuration, the heater is housed in the heater housing, and the heater housing is detachable, so that the heater can be easily replaced and the heater can be removed from the cooking device.

A cooking device according to still another aspect of the present invention is
A detachable heat-resistant plate unit is provided, which covers the heater housing and is fitted with a heat-resistant plate that transmits light so as to match the front opening of the heater housing. According to this configuration, the heat-resistant plate unit to which the heat-resistant plate that shields the heater and transmits light can be detached, so that cleaning is easy. A heating cooker according to still another aspect of the present invention has an opening in an upper portion of the heat-resistant plate attached to the heat-resistant plate unit that transmits light. According to this configuration, since the heat-resistant plate attached to the heater housing has an opening in the upper part, the heat in the heater housing is radiated through the opening to the cooking section on which the object to be cooked is placed. It As a result, the inside of the heater housing is cooled and the life of the heater is greatly extended, so that a heating cooker with low running costs can be provided.

A heating cooker according to still another aspect of the present invention is
The heat resistant plate unit and the heat resistant plate that transmits light are detachable. According to this configuration, the heat-resistant plate unit and the light-transmitting heat-resistant plate can be detached, respectively, so that it is possible to very easily clean the dirt caused by the scattered matter from the food, and it is possible to realize a heating cooker that is easy to maintain.

A heating cooker according to still another aspect of the present invention is
An opening is provided in the metal plate of the heat resistant plate unit, and a heat resistant plate that transmits light is arranged so as to be in close contact with the opening.
The heat-resistant plate that transmits light can be attached to and detached from the metal plate of the heat-resistant plate unit. Further, the heat resistant plate that transmits light has an opening in the upper part thereof, and the heat resistant plate unit has a fin in the upper part thereof. The heat-resistant part of the heat-resistant plate unit is closely attached so as to be disposed in the opening on the front surface of the heater housing, and the heat-resistant plate unit and the heater housing have a removable structure. With this configuration, the heat-resistant plate unit to which the heat-permeable plate that transmits light is attached and the heat-resistant plate that transmits light can be attached and detached respectively, so that the heat-permeable plate that transmits the most susceptible light can be easily cleaned. Further, since the fins attached to the upper part of the heat-resistant plate unit come into contact with the lower surface of the grill plate disposed thereon, the cooking section and the space between the rear surface of the heater housing and the stove inner box are shielded. The fins serve as a partition that separates the air blowing and suction paths from each other so as to prevent the heat in the stove inner box from escaping and prevent hot air in the cooking section from entering the suction path.

A heating cooker according to still another aspect of the present invention is
The heat-resistant plate that transmits light has a function of at least diffusing or blocking the emitted light. If a heat-resistant plate that transmits light, especially a transparent quartz glass plate, is used, the quartz glass allows light from the visible light to the near infrared (~ 5 μm) to be seen through, so that the radiant light emitted from the carbon heater is blocked, so that the eyes of the user are blocked. It's not dazzling. A heating cooker according to still another aspect of the present invention is a heat-resistant plate that transmits the light, a quartz glass plate,
The heat-resistant plate is made of any one of a crystallized glass plate, a mica plate, and a borosilicate glass plate, and the heat-resistant plate is transparent, semi-transparent, or colored. If a heat-resistant plate that transmits transparent light, especially a transparent quartz glass plate, is used, the quartz glass transmits light from visible light to near infrared light (~ 5 μm), so the radiant energy emitted from the carbon heater can be efficiently applied to food. Can be irradiated. However, since the radiant light passes through the cooking section to the outside, the eyes are dazzling, and there is also a problem that the cook feels hot in the hot season such as summer and is difficult to use. In the case of a translucent or colored glass plate, the radiant energy emitted is blocked by the glass plate, so the heating efficiency is reduced, but the problem of dazzling eyes or the cook being hot can be solved. The selection can be used properly according to the judgment of the user. As a result of comprehensive examination, the one using the colored glass plate is the easiest to use.

A heating cooker according to still another aspect of the present invention is
A continuous convex portion or concave portion is provided on one side or both sides of the heat-resistant plate that transmits the light. According to this structure, even a heat-resistant plate that transmits transparent light does not cause radiated light to scatter due to the unevenness of the surface and cause eyes to be dazzled. Further, it has a feature that the radiated light from the carbon heater can be condensed at a required place by selecting the shape of the unevenness. In a heating cooker according to still another aspect of the present invention, a blower pipe having at least one opening is provided in contact with a lower surface opening of the heater housing. According to this configuration, the cool air outside is blown from the blower pipe to the heater housing portion, whereby the abnormal temperature rise of the heater inside the housing can be prevented, and the life of the heater is significantly improved. Since the heater is cooled, the temperature of the quartz glass sealing portion at both ends of the heater is also lowered, and damage to the sealing portion, which is the weakest point of the lamp type heater, can be reduced. Further, heat is exchanged with the cool air blown in the heater housing, and the hot air hits the cooking section, which is effective in shortening the cooking time.

A heating cooker according to still another aspect of the present invention is
The area of the opening of the blower pipe is large on the wind inlet side,
It is characterized by a structure that becomes gradually smaller toward the back. Since the opening area of the multiple openings of the blower tube is large on the inlet side of the wind and decreases toward the back, the flow rate of the air passing through each opening is made uniform, and the inside of the heater housing placed above is even. To be cooled. If the areas of the openings are equal, the pressure in the opening on the back side becomes larger than that on the inlet side, so more air enters the heater housing from the opening on the back side, and the cooling in the heater housing is uneven. become. Since hot air that has exchanged heat with the heater in the heater housing is blown from the upper opening of the heater housing to the cooking section, if the air flow is not uniform, the hot air hits the food item unevenly. If the heating efficiency differs depending on the position of the cooking section, some of the parts to be cooked are well-baked and others are not, and it is not possible to provide food that is optimally baked as a whole.

A heating cooker according to still another aspect of the present invention is
A plate is attached to one side or both sides near the opening provided in the blower section at 70 ° to 120 °, preferably substantially at right angles to the flow direction of the wind. Since the air that has entered horizontally along the blower pipe hits the plate and changes its direction substantially vertically and flows into the heater housing, the air flows uniformly in the housing, and uniform cooling and heat exchange can be realized. if,
If the plate is not provided, the airflow will obliquely flow into the heater housing, and the airflow within the housing will become coarse and dense. Therefore, there is a possibility that variations in cooling effect and variations in air flow rate that hit foods may occur, resulting in uneven baking. In a heating cooker according to still another aspect of the present invention, a removable grill plate having at least one opening is provided above the heater housing, and a removable cooking net is provided on the grill plate. It is characterized by It should be noted that although the opening of the above structure is described as a large number of openings, the same effect can be obtained even if one opening having substantially the same area as that of the opening is adopted by adopting a horizontally long shape or the like. According to this structure, the opening of the grill plate has a function as a suction port for sucking smoke emitted from the cooking product, and also has an effect of suppressing the temperature rise of the grill plate. Also,
Since the grill plate can be attached and removed, cleaning is easy. Since the grill plate, heater housing, heat-resistant plate unit and cooking net can also be attached and removed, the inner surface of the stove can be easily cleaned.

A heating cooker according to still another aspect of the present invention is
A shield plate is attached to at least one of the sides of the lower surface of the removable cooking net near the both sides having the heater, and one or more heat shield plates are attached to the inside of the shield plate. Since the shielding plate is arranged at a distance so as to be equal to or below the upper end of the heat-resistant plate that has an opening in the upper part of the heater housing, the scattered matter from the food enters the heater housing. There is nothing. It is possible to provide a heating cooker that has a heat shield plate inside the shield plate and blocks heat emitted from the carbon heater so that the heat shield plate does not dazzle the eyes and the cook is not hot. Since the cooking net is removable, it is easy to clean.

[0015]

A heating cooker according to still another aspect of the present invention is
A removable metal box is attached to the bottom of the cooking stove inside the box. Scattered materials from foods collect in the metal box. The metal box is a detachable structure, so you can easily remove it and dispose of and scatter it. A heating cooker according to still another aspect of the present invention is at least one side part in an inner stove box having a cooking net on which an object to be cooked is placed, and at least one of which is provided below the object to be cooked. A heater housing having two heaters and an opening on the bottom surface, and opening the front surface of the heater housing between the heater and the food to be cooked.
The mouth portion, the heat plate which transmits mounting et al light to form an opening in the top, provided with a predetermined gap in heat plate which transmits the light, heat plate having a lower end for transmitting the light is arranged to come to equal to or lower position to the position of the upper end portion of the shield plate scattered material from the the food to the opening is prevented from entering, and the opening of the lower surface of the heater housing A blower tube having an opening communicating with the upper portion thereof, the upper opening of the blower tube, the opening portion of the lower surface of the heater housing, the inside of the heater housing, and the upper portion of the heat-resistant plate .
Pass through the cooking net through the opening and the shield
It is characterized by having an air flow path. Since the inside of the heater housing is cooled by the air flow caused by the blown air, the temperature rise of the sealing portions at both ends of the carbon heater is suppressed, and as a result, the life of the heater is significantly extended. In addition, since the airflow enters the cooking section through the upper opening of the heat-resistant plate that transmits light, and between the heat-resistant plate that transmits light and the shielding plate, it also has the effect of suppressing the scattered matter of food from entering the heater housing, It is possible to realize a heating cooker in which the carbon heater and the reflector are not contaminated.
In addition, heat exchange occurs in the heater housing, and the heated air hits the cooking section, greatly improving cooking efficiency,
There is an energy saving effect.

[0017]

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of the heating and cooking machine of the present invention will be described with reference to the accompanying FIGS. 1 to 9. << First Embodiment >> FIG. 1 is a perspective view of an essential part of a heating cooker 1 according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line II-II of FIG. In each figure, the same reference numerals are given to the elements of the same shape which are provided symmetrically. 1 and 2, the stove inner box 5 includes side surfaces 5A and 5B and an upper surface 5C.
Has an opening on the inside and an opening 5G on the side surface 5A
A heater unit 20 that can be attached and detached via the above is provided. A predetermined distance D is provided between the outer side surface 20A of the heater unit 20 and the side surface 5D of the stove inner box 5. Below the heater unit 20, a blower tube 3 whose right end is closed in the drawing is provided, and air shown by an arrow 9 is blown into the tube by a blower device (not shown). A removable grill plate 4 having a large number of openings 6 is placed on both ends of the opening 5C in the upper part of the stove inner box 5.
The cooking net 10 can be attached to and detached from the inside of the grill plate 4. The inner stove box 5 has an opening 8 connected to a suction device (not shown) on the bottom surface, and sucks smoke coming out of the food 10A on the cooking net 10 and entering through the opening 6 of the grill plate 4. . In FIG. 2, the heater housing 2 in the heater unit 20 disposed on the left and right in the stove inner box 5 has an opening 2A on the front surface and an opening 36 on the bottom surface. Inside the heater housing 2, there are provided a heater 21, a reflector 22 arranged below the heater 21 at a predetermined interval, and a control plate 23 for controlling the air flow. So that it closely adheres to the opening 2B on the lower surface of the heater housing 2,
A blower pipe 3 having an opening at the top is provided.

As shown in FIGS. 3 and 4, the heater housing 2 is provided with a heat-resistant glass unit 30 as a heat-resistant plate unit having a structure in which the heater housing 2 is closely covered. The front surface of the heat resistant glass unit 30 has an opening 30A. A flat heat-resistant glass plate 31 as a heat-resistant plate that transmits light is provided with metal fittings 39, 40 so as to shield the lower part of the opening 30A.
It is detachably attached by. When the heat-resistant glass plate 31 is lifted upward in the figure, the heat-resistant glass unit 3
Can be removed from scratch. Heat-resistant glass unit 30
A fin 24 is provided on the upper part of the. Fin 24
As shown in FIG. 2, when the heat-resistant glass unit 30 is incorporated in the stove inner box 5, it is attached so as to contact the lower surface of the grill plate 4. A cooking net 10 on which the food 10A to be cooked is placed is detachably arranged inside the grill plate 4, and a shield plate 13 is provided on the lower surface of the cooking net 10.
The heat shield plates 14 are attached respectively. The shielding plate 13 is
It is attached at a predetermined distance from the heat-resistant glass 31, and in the figure, the lower end 13A of the shielding plate 13 is arranged at the same position as or below the upper end 31A of the heat-resistant glass plate 31. There is. Detachable metal box 25
Is located at the bottom.

The metal material of each element is not limited as long as it has heat resistance, but it is optimal because the stainless steel material is not easily oxidized and cleaning is easy. The heat-resistant glass plate 31 as a heat-resistant plate that transmits light has a heat-resistant temperature of 50
It may be transparent or translucent at 0 to 600 ° C. or higher, but transparent quartz glass having a good transmittance of infrared rays from the visible light to the wavelength of 5 μm is most suitable. However, since quartz glass is expensive, crystallized glass such as Neoceram (registered trademark) manufactured by Nippon Electric Glass Co., Ltd. or Pyrex (registered trademark) which is borosilicate glass can also be used. A mica plate can also be used. 3 is a perspective view showing a state before the heat-resistant glass unit 30 and the heater housing 2 are assembled, FIG.
FIG. 4 is a perspective view after assembly.

As shown in FIG. 3, an important part of the heating and cooking machine of the embodiment of the present invention is that the heat-resistant glass is attached to the opening 30A of the heat-resistant glass unit 30 so that the opening 33 is formed in the upper part thereof. The plate 31. Further, as shown in FIG. 2, the position of the lower end 13A of the shield plate 13 which is attached to the heat-resistant glass plate 31 with a space therebetween is located at the heat-resistant glass plate 31.
The position is the same as or below the position of the upper end 31A. In the conventional cooking device shown in FIG. 10, the food 1
The scattered matter from 06A reached the heater 102 and the reflection plate 104 and contaminated them. However, in the configuration of the present embodiment, since the scattered matter does not enter the heater housing 2 at all, the heater 21 and the reflection plate 22 are contaminated. The heating characteristics do not deteriorate. Since the heater 21 and the reflection plate 22 are hardly soiled, cleaning can be extremely reduced, and a heating cooker with easy maintenance can be realized.

Further, since the heater housing 2, the heat-resistant glass unit 30 and the heat-resistant glass plate 31 can be attached and detached, it is easy to replace the heater and the heater housing 2 when the heater 21 fails. When the heat-resistant glass plate 31 becomes dirty, it can be easily removed and cleaned. Further, since the heat resistant glass unit 30 can be removed, cleaning is easy. Since the fins 24 attached to the upper part of the heat-resistant glass unit 30 are in contact with the lower surface of the grill plate 4, the cooking chamber 5H
Hot air inside the stove inner box 5 and heat-resistant glass unit 30
It does not leak into the space 4A between The fins 24 also have a function of blocking a ventilation path and a suction path, which will be described later. In addition, the heat shield plate 14 attached to the lower surface of the cooking net 10
Since the radiant light and radiant heat from the heater 21 are blocked by the heater 21, a cooker can be realized in which the cook is not dazzling and does not feel hot.

The heater housing 2 is described with reference to FIGS. 3 and 4.
The structure of the heat-resistant glass unit 30 will be described in detail.
FIG. 3 is an exploded perspective view of the heat resistant glass unit 30 and the heater housing 2, showing a state before assembling, and FIG. 4 shows a state after assembling. In FIG. 3, the heat-resistant glass unit 30 made of a U-shaped metal plate has a large opening 30A on the front surface in the figure. The heat resistant glass plate 31 is attached to the opening 30A with metal fittings 39 and 40 so that the glass plate 31 can be attached and detached. The heat-resistant glass plate 31 is
The upper portion 31A does not completely block the opening 30A and the opening 33A
It is mounted in such a position as to have. The heat resistant glass unit 30 is provided with fins 24. The heater housing 2 has an opening 35 in the front surface of a rectangular parallelepiped part 38 made of a metal plate. Two heaters 21 are attached to the inside of the heater housing 2 by mounting fittings 37. In FIG. 3, the peripheral portion of the metal fitting 37 to which the heater 21 is attached is exposed in order to make the drawing easier to see, but in actuality, it is shielded by another member to shield the inside of the heater housing 2 from the outside. A large opening 36 is also formed on the bottom surface of the heater housing 2. FIG. 4 shows a perspective view of a heater unit 20 in which the heater housing 2 is covered with a heat resistant glass unit 30 from above and combined.
The heater unit 20 assembled in this way is inserted into the stove inner box 5 as shown in FIGS.

In the cooking net 10 shown in FIG. 1, a large number of openings 12 are formed in a metal plate 11 made of stainless steel, for example. The shield plate 13 and the heat shield plate 14 are fixed to the lower surface of the cooking net 10, respectively. The opening 12 may be formed in a stainless plate by laser processing or the like. Also, a structure braided with stainless wire can be used without problems. The cooking net 10 is not limited to metal, and may be made of a heat resistant material such as ceramics.

<Second Embodiment> FIGS. 5 and 6 are perspective views showing the configurations of the heater unit 20 and the blower pipe 3 of the heating cooker according to the second embodiment of the present invention. The second embodiment relates to the blower pipe 3 or 3A arranged below the heater unit 20, and the other structure is the same as that of the first embodiment. In FIG. 5A, the heater unit 20 has an opening 36 at the bottom. FIG. 5B shows the blower tube 3
FIG. As shown in FIG. 1, the blower pipe 3 is arranged below the heater unit 20. The blower pipe 3 is a cylinder made of, for example, a stainless plate, and one end 3B is closed. A plurality of openings 51, 52, 53, 54 and 55 are formed along the longitudinal direction of the blower pipe 3.
The arrow 9 indicates the opening 5 of the blower pipe 3 from the blower device (not shown).
It shows the air flow sent to zero. The opening area of the openings 51 to 55 is the largest at the opening 51 on the inlet side of the air flow,
The opening 55 is gradually reduced toward the end 3B, and the opening 55 is the smallest.

The blower pipe 3 is attached in close contact with the opening 36 on the lower surface of the heater unit 20 so that the openings 51 to 55 coincide with each other. The air flow indicated by the arrow 9 is introduced into the heater housing 2 from the openings 51 to 55 through the opening 36 of the heater unit 20. The opening area of the opening 51 is the largest, and the openings 52, 53, 54, and 5 increase in depth.
Since it is gradually reduced to 5, the amount of each air blown from the openings 51 to 55 becomes substantially equal. If all the opening areas are formed to be the same, the pressure of the incoming air as shown by the arrow 9 is greater on the back side than on the inlet side. Therefore, the amount of air discharged from the opening 55 is larger than the amount of air discharged from the opening 51, and the amount of air passing through the heater housing 2 varies depending on the place and becomes nonuniform. As a result, the degree of cooling of the heater 21 in the heater housing 2 is different, and the amount of air flowing out from the opening 33 in the upper part of the heater unit 20 is different depending on the place. If the amount of air differs depending on the location, the temperature of the hot air that has been heat-exchanged in the heater housing 2 becomes uneven depending on the location, and the contact with the food 10A also becomes uneven depending on the location, which causes uneven baking of the food 10A. Become.
As in the present embodiment, the area of the opening 51 on the inlet side of the blower pipe 3 is the largest, and the areas of the openings 52 to 54 are gradually reduced toward the opening 55, whereby the amount of air discharged from the openings 51 to 55 is increased. Since it becomes equal and the hot air that hits the cooked food becomes uniform, it is possible to process food without uneven baking.

The openings 51- of the blower pipe 3 shown in FIG.
The shape of 55 is a quadrangle, but the same effect can be obtained with openings of various shapes such as a round shape and an elliptical shape. Further, the number of openings is not limited to five, and an optimum number can be selected depending on the size of the cooking machine, the size and shape of the heater housing 2, and the like. Figure 6
[Fig. 6] is a perspective view of another example of a blower tube 3A. In FIG.
The blower pipe 3A is made of, for example, a stainless plate, and the end portion 3B
Is closed. The openings 51, 52, 53, 54, 55 are formed along the longitudinal direction of the blower tube 3A, and the opening area thereof is the same as that of the blower tube 3 of FIG.
It is made smaller from 1 toward the opening 55. In the blower pipe 3A, a plate 58 for changing the direction of the wind is attached so as to project from the edges of the openings 51 to 55 toward the inside of the blower pipe 3A. The plate 58 is attached at a predetermined angle in the range of 70 ° to 110 ° with respect to the wind flow direction. The airflow entering the blower pipe 3A from the opening 50 in the direction of the arrow 9 hits the plate 58 and the traveling direction is changed upward, and becomes substantially vertical to the longitudinal direction of the blower pipe 3A. As a result, when the blower pipe 3A is attached to the heater housing 2, the amount of air entering the heater housing 2 is made more uniform at each location, and hot air having a uniform flow rate is obtained from the opening 33 of the heater unit 20. This makes it possible to process food with less uneven baking. In the blower pipe 3 of FIG. 5 (b) without the plate 58, the wind does not rise vertically and is directed diagonally to the back by the arrow 5
Flows like 1A and causes uneven cooking. In the configuration shown in FIG. 6, the plate 58 is projected from the openings 51 to 55 into the blower tube 3A, but it may be projected from the edges of the openings 51 to 55 to the outside of the blower tube 3A.

<Third Embodiment> A third embodiment of the present invention will be described with reference to FIGS. 7, 8 and 9. FIG. 7 is a perspective view of the heating cooker of the third embodiment, and FIG. 8 is VIII-VI of FIG.
II sectional view, FIG. 9 is a IX-IX sectional view of FIG. 7. The same elements as those in FIG. 1 are designated by the same reference numerals, and duplicate description will be omitted. FIG. 7 shows a state in which the inner stove box 5 shown in FIG. 1 is put in the outer stove box 63. Stove outer box 63
Is used for incorporating the stove inner box 5 into a cooktop or the like. An outer frame 80 is provided on the upper part of the outer stove box 63 so as to surround the upper part of the inner stove box 5. The outer frame 80 is provided with a top metal plate 71. An opening 61 is formed near the center of the upper plate 7 made of metal of the stove inner box 5, and an opening 62 is formed above the side plate 81 of the inner stove box 5. Space 64 communicating with openings 61 and 62
Is formed by being surrounded by the top plate 7, the outer frame 80, and the stove outer box 63. The heater unit 20 is attached and detached through the opening 75. When the heating cooker is operated and air is sucked from the lower opening 8 of the stove inner box 5 by an external suction device (not shown), the outside air is sucked from the opening 6 of the grill plate 4. Further, the outside air is sucked in from the opening 61 of the top plate 7 and the arrow 69
As shown in FIG. 5, the gas flows into the stove inner box 5 through the opening 62. As shown in FIG. 8, this air flow causes the grill plate 4, the top plate 7 of the inner stove box 5, the upper part of the outer grill box 63,
The outer frame 80 and the upper surface metal plate 71 are cooled. If opening 6
When there is no 1 or 62, the upper plate 7 of the inner stove box 5, the upper part of the outer stove box 63, the outer frame 80 and the upper metal plate 71 are not cooled. May cause burns. In the present embodiment, since the upper plate 7 and the upper metal plate 71, which are easily touched by people, are cooled, there is no risk of burns without heat even when used for a long time.

The air flow in the heating cooker according to this embodiment will be described in detail with reference to FIGS. 8 and 9.
In FIG. 8, as described in detail with reference to FIG. 6, an air flow indicated by an arrow 9A that is blown into the blower pipe 3A from the blower device (not shown) and blows out from the openings 51 to 55 enters the heater housing 2. Inflow. The airflow is guided inward by the blow control plate 23 and flows as shown by an arrow 9B, and cools the reflection plate 22 and the heater 21, respectively. The air (hot air) heated by cooling the heater 21 flows as shown by an arrow 9C, passes between the opening 33 at the upper part of the heat-resistant glass plate 31 and the shield plate 13, and as shown by arrows 9D, 9E. Go through the mesh of the cooking wire mesh 10 and go out.
The food 10A to be cooked placed on the cooking wire net 10 is heated by the radiant heat emitted from the heater 21 and transmitted through the heat resistant glass plate 31, and is also heated by the hot air. It has been confirmed by experiments that without this hot air, the heating effect of the cooked product is reduced and the cooking time becomes longer and the loss of heat energy also increases.

On the other hand, the suction port 8 is formed by a suction device (not shown).
When air is sucked in from the food product 10A to be cooked, the air in the vicinity of the upper surface of the cooking wire net 10 is sucked in from the opening 6 of the grill plate 4 through the opening 6 of the heat-resistant glass as shown by arrows 90A and 90B. It is sucked into the space between the outside of the unit 30 and the inner stove box 5. The air sucked into the space passes through the lower space of the inner stove box 5 as shown by an arrow 90C and flows out from the suction port 8 as shown by an arrow 90.
In FIG. 7, an arrow 6 is drawn from the opening 61 of the top plate 7 to the space 64.
As shown in FIG. 9, the inflowing air exits the opening 62 as shown in FIG. 9 and passes through the space between the outside of the heat-resistant glass unit 30 and the stove inner box 5 as shown by arrows 69A and 69B. Outflow from 8. According to the configuration of this embodiment,
Most of the smoke generated from the food to be cooked in the heating cooker is sucked together with the air and discharged from the opening 8, so that the air around the heating cooker is not polluted. The smoke-containing air cools the grill plate 4, the top plate 7 of the stove inner box 5, and the stove outer box 63, so that they are not heated so much and there is no risk of burns even if a person touches these parts.

Next, the heater 21 used in the heating cooker of this embodiment will be described. A carbon heater is most suitable for the cooking device of the present invention. In particular, the heat efficiency was highest when a heating element made of a flat plate-like carbonaceous material was arranged such that the flat portion faces the object to be cooked. Since the carbon heater has a large radiant energy, it heats the food to be cooked with radiant energy rather than conduction or convection. In the carbon heater, since the surface of the heating element is carbon, the peak wavelength of the radiated light from the heating element matches the wavelength of light that is easily absorbed by the organic substances and water which are food constituents. Since the surface of the heating element is carbon, the emissivity of the heating element is close to that of a black body and the radiation efficiency is high, and the color temperature when the heating element generates heat is 1000 to 1000.
Since it is 1500 ° C., its peak wavelength is almost similar to the absorption wavelength of organic substances and moisture, and the absorption of radiant energy to organic substances and moisture is good and efficient cooking is possible. Since it absorbs heat well and can be efficiently heated, it has an energy saving effect. Since the surface of the heating element of the carbon heater is formed of a carbon material, it has almost the same effect as heating with a natural charcoal fire, and for example, food processing with a delicious taste almost the same as heating with Bincho charcoal can be performed. The number of carbon heaters 21 installed in the heater housing 30 in each of the above embodiments is two on each side, but it is desirable to change it according to the size of the cooking device. It goes without saying that the heater unit 20 can sufficiently function even if it is provided on only one side depending on the size of the cooking machine. In a large-sized cooker, a cooker having a structure in which the heater units 20 are attached not only on both sides but also on three sides or all four sides can be put into practical use. Further, the shapes of the inner stove box 5 and the outer stove box 63 have been described as being rectangular parallelepipeds, but the shapes are not limited thereto, and the present invention can be sufficiently applied to, for example, round or polygonal stoves.

The heat-resistant glass plate 31 mounted on the front surface of the heater housing 30 is preferably a transparent and flat heat-resistant glass plate, but heat-resistant colored glass can also be used because it has similar heat-resistant properties. For example, the heat-resistant glass colored with the crystallized glass “Neoceram” (registered trademark) manufactured by Nippon Electric Glass Co., Ltd. has a thickness of 3 μm as compared with quartz transparent glass.
Although the infrared transmittance of m or more was decreased, the cooking time did not change significantly. Although there was a phenomenon that the transparent glass plate was dazzling to the eyes, it was proved that the colored heat-resistant glass has a sufficient utilization effect because a cooker which is completely dazzling can be realized by using the colored glass. Although an example of using a flat flat plate-shaped heat-resistant glass has been described in the above-mentioned embodiments, the use of a heat-resistant glass plate having continuous irregularities on the surface scatters light so that the effect of not dazzling the eyes can be obtained. It is effective to shorten the cooking time when the surface of the heat-resistant glass is shaped like a lens and the radiant light from the heater is focused on the cooking surface having the cooking net 10. Although the above embodiment has described the configuration in which the heater is arranged on the lower side surface with respect to the cooking net, the present invention has a configuration in which the cooking net is below and the heater is above, or the heater is above and below the cooking net. Can be applied without any problem. Further, it can be similarly applied to a commercial conveyor type cooking machine.

The heating cooker of the present invention heats and cooks on a cooking net on the upper surface, for example, grilled meat, yakitori, kabaki, roasted oysters, roasted corn, bamboo rings and kamaboko, hamburger, turban shell and abalone. It can be used for baking fish, etc. In addition, it is possible to provide a cooking machine capable of processing delicious food, which is almost equivalent to a charcoal-cooking cooking machine. A cooking machine using charcoal requires a long time to burn the charcoal and must constantly manage the state of the charcoal fire during cooking.However, the heating cooker using the carbon heater of the present invention has a switch. You can cook it a few minutes after putting it in, and then easily adjust the heating power.
Even a cook who has no experience of charcoal grilling can process delicious food almost as good as charcoal grilling. The present invention is not limited to food processing, baking of substances other than food, drying, heat retention,
It can be easily applied to roasting, aging, sterilization, heating, etc. For example, electronic circuit board solder reflow oven, paint dryer,
It can be applied to household and industrial devices that use various heats such as roasting coffee beans.

[0034]

As described in detail in the above embodiments, according to the present invention, a carbon heater having a heating element formed of a sintered body containing a carbon-based substance is used as a heater of a heating cooker. There is. Since the carbon heater uses a carbon-based material for the heating element, a tungsten lamp, a nichrome wire heater,
Cooking time is shorter compared to sheath heaters, etc., and it is less likely to burn. Also, according to the experimental results, since the amount of scattered substances from the cooked material is small, the amount of smoke generated is small and the food can be cooked deliciously. The front of the heater of the heater unit is covered with heat-resistant glass, the upper opening is covered with a shielding plate while maintaining a predetermined gap, and the lower end of the shielding plate is arranged below the upper end of the heat-resistant glass plate. As a result, scattered matter from food hardly adheres to the heater or the reflector, and it is possible to realize a heating cooker capable of maintaining the performance of the heater or the reflector for a long period of time. Since the heat shield plate is provided inside the shield plate, light and heat from the heater can be shielded, so that a cooker that does not dazzle the eyes of the cook and is not hot during cooking can be realized.

Since the heater is housed in the heater housing and the heater is exchanged for each housing, the maintenance is easy. Further, an opening is provided in the lower portion of the heater housing, and a blower tube having a plurality of openings is closely attached to the opening to form a structure for blowing air. As a result, cool air is introduced into the heater housing and the temperature of both ends of the heater is reduced. It is possible to realize a heating cooker in which the life of the heater is lowered and the time and effort of replacement are reduced. Furthermore, by providing an opening on the upper surface of the blower pipe with the opening area on the inlet side of the wind becoming large and gradually decreasing, and by installing a plate in the vicinity of the opening at a right angle to the direction of the wind, the air volume can be made even more uniform. , The wind direction can be made perpendicular to the longitudinal direction of the blower pipe. As a result, the inside of the heater housing is cooled uniformly. In addition, the blown air is heat-exchanged in the heater housing to become hot air and evenly hit the food to be cooked, which shortens the cooking time of food and realizes an energy-saving heating cooker. Further, as a result of the air blow, it is difficult for the scattered matter from the food to enter the heater housing. The use of translucent colored glass for the heat-resistant glass plate eliminated the phenomenon of dazzling eyes and improved the safety of the human body. Since most parts of the heating cooker of the present invention are detachable, even if a problem occurs in each part, the function of the cooking machine can be restored by replacing only that part. Therefore, a heating cooker with a low total cost can be provided. Further, when used continuously for a long time such as for commercial use, each part is heavily contaminated, but since each part can be attached and detached, it has a remarkable feature that cleaning is easy. Further, by using a heat-resistant glass plate having an irregular surface, it is possible to realize a structure that does not dazzle the eyes and a heating cooker capable of condensing the radiant light of the heater and improving the heating efficiency.

[Brief description of drawings]

FIG. 1 is a perspective view of a heating cooker according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an exploded perspective view of a heater unit portion of the heating cooker according to the first embodiment of the present invention.

FIG. 4 is a perspective view of the heater unit of the heating cooker according to the first embodiment of the present invention after assembly.

5A is a perspective view of a heater unit portion of a second embodiment of the present invention, and FIG. 5B is a perspective view of a blower pipe.

FIG. 6 is a perspective view of another example of the blower tube of the second embodiment of the present invention.

FIG. 7 is a perspective view of a heating cooker according to a third embodiment of the present invention.

FIG. 8 is a sectional view of VIII-VIII in FIG.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a sectional view of a conventional cooking device.

[Explanation of symbols]

1 cooker 2 heater housing 3 blower 4 grill plate 5 stove top box 10 cooking net 13 Shield 14 Heat shield 21,102 carbon heater 22 Reflector 31, 105 Heat-resistant glass plate 24 fins 63 Stove outer box

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Toyota 2-14-10 Kashida Nishi, Higashi-Osaka City, Osaka Prefecture Mitoyo Denki Co., Ltd. (56) References Flat 2-25949 (JP, U) Jitsuko Sho 44-3353 (JP, Y1) Registered utility model 3075899 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A47J 37/06 F24C 7/06 F24C 15/34

Claims (17)

(57) [Claims] 1. At least one heater provided below at least one side of an inner stove box for heating an object to be cooked, the radiant heat of the heater being directed to the object to be cooked. A reflector provided in the vicinity of the heater, a heat-resistant plate that transmits light arranged substantially vertically between the heater and the object to be cooked so as to form an opening at the top, and the light It is arranged such that a predetermined space is maintained between the heat-resistant plate that transmits light and the lower end is at a position equal to or lower than the position of the upper end of the heat-resistant plate that transmits the light. A cooking device characterized by having a shield plate that shields the heater from scattering of scattered objects. 2. The carbon heater, wherein the heater contains at least one rod-shaped or plate-shaped heating element of a sintered body of a carbon-based material in a quartz glass tube, and the quartz glass tube is sealed with an inert gas. The heating cooker according to claim 1, which is a lamp heater. 3. The at least one heater is disposed in a rectangular parallelepiped heater housing formed of a metal plate and having openings on a front surface and a lower surface, and a reflector plate is provided in the heater housing on a rear surface near the heater. And a blower control plate, and the heater housing is detachably arranged in the stove inner box with a predetermined space between the heater housing and a side surface of the stove inner box. The heating cooker according to 2. 4. A heat-resistant plate unit detachably attached to the stove inner box, the heat-resistant plate unit having a heat-resistant plate adapted to cover an opening at a front surface of the heater housing when combined with the heater housing and transmitting light. The cooking device according to claim 3, wherein the cooking device is a cooker. 5. The heating cooker according to claim 4, wherein the heat-resistant plate that transmits light is attached to the heat-resistant plate unit so as to have an opening in an upper portion. 6. The heating cooker according to claim 4, wherein the heat-resistant plate that transmits the light is attachable to and detachable from the heat-resistant plate unit. 7. The heat-resistant plate unit has an opening, and a heat-resistant plate that is in close contact with the opening and detachably transmits light,
The heat-transmitting plate that transmits light is provided with an opening above the heat-resistant plate unit, and the heat-transmitting plate of the heat-resistant plate unit is provided with a fin at the opening of the heater housing. The heating cooker according to any one of claims 4 to 6, further comprising a heater housing that is attached to the heat-resistant plate unit so as to have an opening on the heat-resistant plate that transmits light, and is removable from the heat-resistant plate unit. 8. The heating cooker according to claim 4, wherein the heat-resistant plate that transmits light has at least a function of diffusing or shielding the radiated light. 9. The heat-resistant plate that transmits light is any one of a quartz glass plate, a crystallized glass plate, a mica plate and a borosilicate glass plate, and is a transparent, semi-transparent or colored heat-resistant plate. The heating cooker according to any one of claims 1 and 4 to 8. 10. The heat-resistant plate that transmits light has a continuous convex portion or concave portion on one surface or both surfaces thereof, according to any one of claims 1 and 4 to 9. The cooker described. 11. The blower pipe having at least one opening is disposed in contact with the opening on the lower surface of the heater housing. Cooking machine. 12. The cooking device according to claim 11, wherein the area of the opening of the blower pipe is larger on the inlet side of the blower pipe and gradually decreases toward the back. 13. The cooking apparatus according to claim 11 or 12, further comprising a plate attached to one side or both sides of the opening provided in the blower pipe at a right angle to an air flow direction. Machine. 14. A removable grill plate having at least one opening is provided above the heater housing, and a removable cooking net is provided on the grill plate. The heating cooker according to any one of Items 3, 4, 7, and 11. 15. The cooking net has a shield plate on at least one side having a heater near both sides of the lower surface, and has at least one heat shield plate inside the shield plate. The cooking device according to claim 14. The bottom of 16. hob inner box, cooking machine according to any of claims 1 to 15 and claim 3, characterized in that it has a metal box which can be detachable. 17. An at least one side portion in an inner stove box having a cooking net on which an object to be cooked is placed, which is provided below the object to be cooked and which has an opening on the bottom surface. A heater housing having: a heater housing, and an opening formed in an upper portion of the opening of the front surface of the heater housing between the heater and the object to be cooked .
Heat plate which transmits urchin mounting et al light, provided with a predetermined gap in heat plate which transmits the light, equal to or lower position to the position of the upper end portion of the heat-resistant plate having a lower end for transmitting the light is arranged to come, shield scattered material from the the food to the opening is prevented from entering, and the blower tube having an opening that communicates with the opening of the lower surface of the heater housing to the upper An upper opening of the blower pipe, a lower surface of the heater housing
Opening, inside the heater housing, the upper portion of said refractory plate
Through the cooking net through the opening of the
A heating cooker characterized by having an air flow path.