JPH0645764Y2 - Gas oven - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to improvement of a gas oven, and more particularly to a gas oven capable of baking pizza in a short time.

2. Description of the Related Art A convection type convection oven that burns an object to be fired with atmospheric heat is already known. When baking pizza using this convection oven, it takes about 8 minutes for a raw pizza to be baked, and about 5 minutes for a half baked pizza. By the way, in recent years, so-called fast foods, which can be cooked in a short time, have become popular, and for example, hamburgers and the like are completed within a minute of ordering. This one minute is said to be the limit time for a customer to order and supply products. Therefore, even when pizza is used as a fast food product, it is not attractive as a product unless the cooking time is about one minute. However, in the conventional convection type convection oven, it is impossible to shorten the above time. Therefore, there has been a demand for an oven in which it is possible to select whether the object to be fired is baked with atmospheric heat or radiant heat depending on the type of object to be baked.

[The purpose of the device]

It is an object of the present invention to provide a gas oven that can bake an object to be fired such as pizza in a short time and can be used for other cooking as well as a conventional convection oven.

[Constitution of device]

The configuration of the present invention taken to achieve the above object is as follows. According to the first invention, there is provided a gas oven in which it is possible to select whether the object to be fired is burned with atmospheric heat or radiant heat depending on the type of the object to be fired. A ceiling plate made of metal, which has a large number of small holes and generates far infrared rays by heating, and a large number of small holes, which are arranged at the bottom of the baking chamber, heat far infrared rays by heating. A metal floor plate that is generated, a rotating body that is arranged on the floor plate and has a heat permeable portion, and an upper fire burner and a lower fire burner that are arranged above the ceiling plate and below the floor plate. When the object to be fired is heated with atmospheric heat, a temperature adjusting means for controlling the temperature of the baking chamber by controlling the upper burner and the lower burner, and when the object to be fired is radiant heat, Activate the timer that sets the firing time of the fired product. And a control means for continuing the combustion of the upper burner and the lower burner regardless of the operation of the temperature adjusting means. In the second invention, a cover is arranged on the upper portion of the lower flame burner.
Is a gas oven according to the invention. When baking pizza, it is necessary to melt the cheese placed on the dough with baking of the dough. Therefore, it is desirable to bake pizza so that it is exposed to radiant heat, that is, direct flame, rather than ambient heat. By the way, in the case of firing an object to be fired by an open flame, if the fire is sufficiently passed to the inside of the object to be fired, the outside will be burnt, and if the outside is not burnt, the fire will not be sufficiently passed to the inside. There is. In order to solve this problem, the present invention uses a ceiling plate and a floor plate made of a metal plate having a large number of small holes, and an upper burner and a lower burner are provided above and below the ceiling plate, respectively. It is arranged. As a result, infrared rays emitted from the flames of the upper burner and the lower burner pass through the small holes and are directly applied to the object to be fired.
Further, the ceiling plate and the floor plate emit far-infrared rays by being heated, and the far-infrared rays are also simultaneously irradiated to the object to be fired. As described above, according to the oven of the present invention, the infrared rays emitted from the flames of the upper and lower fire burners are mixed with the far infrared rays emitted from the ceiling plate and the floor plate to fire the object to be fired. become. That is, the surface of the object to be fired and the interior of the object to be fired are mainly fired by infrared rays, and the surface and the inside of the object can be fired in a short time. Further, since the temperature inside the firing chamber can be increased by the infrared rays, the rise time before the firing of the object to be fired can be shortened. The temperature adjusting means controls the temperature of the baking chamber by controlling the upper-burner and the lower-burner when baking a material to be baked other than pizza. And if you set a timer to set the baking time of the pizza, the upper burner and the lower burner will continue to burn without interruption even if the temperature adjusting means is operating or not, baking the pizza. The open flame (burner flame) required when doing is secured. It should be noted that it is preferable to make a plate for baking the object to be fired with a net because the fire will be better.

【Example】

The present invention will be described in more detail based on the embodiments shown in the drawings. FIG. 1 is a perspective view showing a state in which a door is opened, and FIG. 2 is a schematic sectional view showing an internal state. Reference numeral 1 denotes a gas oven, which has a firing chamber 2. At the ceiling of the firing chamber 2, a ceiling plate 3 having a large number of small holes 3a formed in a metal plate is attached. On the floor of the firing chamber 2, a floor plate 4 having a large number of small holes 4a formed in a metal plate is placed on a placing step (not shown). A rotary shaft 5 is provided so as to penetrate the floor plate 4. A driven sprocket 6 is fixed to the lower end of the rotary shaft 5, and a drive sprocket 8 is fixed to the driven sprocket 6 and the tip of the drive shaft of a drive motor M provided beside the firing chamber 2.
A chain 7 is hung between and. A rotating body 9 having a heat transmitting portion 93 that does not block the passage of radiant heat is mounted on the rotating shaft 5. In this embodiment, the rotor 9 has a structure in which a ring 92 is attached to the tips of a plurality of rods 91 radially provided from the hollow shaft 90.
Is mounted on the rotary shaft 5. The rotating body 9 may have another structure such as a lattice shape or a mesh shape as long as it does not block the passage of radiant heat. Two upper flame burners 11 and two lower flame burners 12 are arranged in parallel on the upper side of the ceiling plate 3 and the lower side of the floor plate 4, respectively.
The upper heat burner 11 and the lower heat burner 12 are designed to control the temperature of the baking chamber by controlling the temperature adjusting means when baking an object to be baked other than pizza, and a timer for setting the baking time of the pizza. When is set, the control means operates, and the upper fire burner and the lower fire burner continue combustion regardless of the operating state of the temperature adjusting means. The temperature adjusting means and the control means will be described later. The lower heat burner 12 is covered with a cover cover 13 made of heat-resistant glass. FIG. 3 is an electric circuit diagram of the gas oven according to the present embodiment showing the control device. Reference numeral 30 is a power switch, 31 is an indicator lamp, and 32 is an upper heat temperature controller which is a temperature adjusting means, and adjusts combustion of the upper heat so that the temperature in the firing chamber 2 becomes a constant set temperature. Reference numeral 33 is a lower fire temperature controller which is a temperature adjusting means, and adjusts the combustion of the lower fire so that the temperature in the firing chamber 2 becomes a constant set temperature. Reference numeral 34 is an ignition safety device for upper fire, 35 is an ignition safety device for lower fire, 36 is a timer, and 32a, 33a, 37 are interlocking relays which are control means. Reference numeral 38 is a selection switch that can be switched depending on the type of the material to be fired. (Operation) A case of baking pizza will be described with reference to FIGS. 1 to 3. The selection switch 38 is turned on. When the power switch 30 is turned on, electricity is supplied to the ignition safety device 34 for upper heat and the ignition safety device 35 for lower heat through the upper temperature controller 32, the lower temperature controller 33, and the solenoid valve (not shown) opens. The igniter will automatically fly the spark. When it senses this, the indicator light 31 lights up and combustion continues. When the timer 36 is set, the relays 37, 32a and 33a are turned on. As a result, the power source is directly connected to the ignition safety device 34 for upper fire and the ignition safety device 35 for lower fire. As a result, regardless of the operating states of the upper heat temperature controller 32 and the lower fire temperature controller 33, the current flows to the upper fire ignition safety device 34 and the lower fire ignition safety device 35, and the upper fire burner 11 and the lower fire burner are supplied. Continue burning 12. Further, as a result, infrared rays generated from the upper flame burner 11 and the lower flame burner 12 pass through the small holes 3a and 4a of the ceiling plate 3 and the floor plate 4, bake the surface of the pizza, and the cheese melts moderately. Further, far infrared rays generated by heating the ceiling plate 3 and the floor plate 4 efficiently bake the inside of the pizza, and the surface and the inside of the pizza can be baked in a short time. By the way, according to our experiment, when baking raw pizza using a conventional convection oven, it took about 8 minutes for baking, but in the case of the gas oven according to the present invention, it takes about 2 minutes 30. It could be fired in seconds. In the case of the half-baked pizza, it took about 5 minutes and could be baked in about 60 seconds. Relay 37, 32a, 33a when the timer exceeds the set time
Is turned off, and the upper flame burner 11 and the lower flame burner 12 are controlled by the upper flame temperature controller 32 and the lower flame temperature controller 33. In this case, since the temperature in the firing chamber 2 is usually higher than the set temperature, each temperature controller immediately works and combustion is stopped. When baking an object to be baked such that bread is kept at a constant temperature, the selection switch 38 is turned off. In this case, even if the timer 36 is set, the relays 37, 32a, 33a
Since it is in the F state, the temperature in the firing chamber 2 is maintained at a constant set temperature by the upper heat temperature controller 32 and the lower heat temperature controller 33. By thus providing the selection switch 38, it is possible to bake bread or the like and pizza separately. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the claims for utility model registration.

[Effect of device]

The present invention has the above-mentioned configuration and produces the following effects. (A) Infrared rays radiated from the flames of the upper-burner and the lower-burner are directly irradiated to the object to be burned through the small holes. Further, the ceiling plate and the floor plate emit far infrared rays by being heated, and the far infrared rays are also applied to the object to be fired. In this way, the infrared rays radiated from the upper flame burner and the lower flame burner and the far infrared rays radiated from the ceiling plate and the floor plate can be mixed to efficiently burn the burning object, so that the burning object can be burned in a short time. It can be baked and is suitable for pizza's first food. Further, the temperature rise in the firing chamber can be secured by the infrared rays, and the rise time before the firing of the object to be fired can be shortened. (B) In the case of firing the object to be fired with radiant heat, when the timer for setting the firing time of the object to be fired is operated, the combustion of the upper burner and the lower heat burner is continued regardless of the operation of the temperature adjusting means. Since it has a control means, when baking pizza or the like that is baked by radiant heat, a necessary open flame can be secured and good baking can be performed. (C) Infrared heat radiated from the upper burner and the lower burner irradiates the object to be burned directly through the small holes, so if the object does not change its position, infrared radiation is radiated only partially. It causes uneven burning. However, in the present invention, since the object to be fired is provided with the rotating body, the object to be fired can be fired while being rotated, and uneven burning does not occur. As a result, there is sufficient time for the surface to burn, during which time the interior can be well cooked. (D) In the case where the cover cover made of glass is disposed on the upper part of the lower heat burner, even if the juice or the like is dripped, it does not directly hit the lower heat burner and therefore does not affect the combustion.
Moreover, it does not affect the radiation of infrared rays from the flame.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a door is opened, FIG. 2 is a schematic sectional view showing an internal state, and FIG. 3 is an electric circuit diagram of a gas oven according to this embodiment showing a control device. (2): Baking chamber (3): Ceiling plate (3a): Small hole (4): Floor plate (4a): Small hole (5): Rotating shaft (9): Rotating body (93): Heat transmitting part (11) ): Upper heat burner (12): Lower heat burner (13): Cover (32): Upper heat temperature controller (33): Lower heat temperature controller (32a) (33a) (37): Relay (36) :timer

Claims (2)

[Scope of utility model registration request] 1. A gas oven in which it is possible to select whether to sinter the object to be fired with atmospheric heat or radiant heat depending on the type of the object to be fired. The gas oven is arranged in the upper part of the baking chamber (2). A ceiling plate (3) made of metal, which is provided with a large number of small holes (3a) and generates far infrared rays when heated, and a large number of small holes (4a) arranged in the lower part of the firing chamber (2). ) And a metal floor plate (4) that emits far infrared rays by heating, a rotating body (9) disposed on the floor plate (4) and having a heat transmission part (93), and the ceiling. An upper-fire burner (11) and a lower-fire burner (12) arranged on the upper side of the plate (3) and the lower side of the floor plate (4), and when the object to be fired is fired by atmospheric heat, Temperature control means for controlling the temperature of the firing chamber by controlling the fire burner (11) and the lower heat burner (12); When the product is fired by radiant heat, when the timer for setting the firing time of the object to be fired is operated, the upper fire burner (11) and the lower fire burner (12) regardless of the operating state of the temperature adjusting means. A gas oven equipped with a control means for continuing the combustion of the gas oven. 2. The gas oven according to claim 1, wherein a cover cover (13) is provided on an upper portion of the lower flame burner (12).