JPH03191211A - Oven toaster - Google Patents

Abstract

PURPOSE:To simplify a shape of an oven toaster and improve a performance of banking of a toast by a method wherein a central part of a net is formed with a journal part projected downwardly, the shaft is provided with a fan and a rotating shaft of a motor is connected to the shaft. CONSTITUTION:Irrespective of a uniform banking of a half part of a cooking item 19 mounted on a net 16 by an upper heater 13 and a lower heater 14, the cooking item 19 is also rotated together with the net 16, resulting in that the entire cooking item 19 can be uniformly boiled. Hot air is sent upwardly by a fan 22 arranged at a journal part 18 and a convection flow is also promoted, resulting in that a boiling distribution may easily be uniformed and a thermal efficiency can also be increased. Since the net 15 and the rotating shaft 17 are connected through the journal part 18 integrally projected downwardly and formed at a central part of the net 16, the journal part 18 may become a proper heat shielding member for a radiation heat generated from the lower heater 14 and further the concentrated hot air is dispersed by the fan 22. Thus, it is possible to prevent a part near the upper part of the rotating shaft 17 from being over-scorched.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a toaster oven for general household use.

BACKGROUND OF THE INVENTION A conventional toaster oven of this type was developed, for example, in the 1980s.
As shown in Japanese Patent No. 25816, it had a structure as shown in FIG.

That is, upper and lower heaters 3.4 are suspended on the side walls of the inner casing 2 that forms the cooking cabinet 1, and between the upper and lower heaters 3.4, the grill 5 is moved forward and backward in conjunction with the opening of the door 6. I am intervening. The food 7 was then placed on the gridiron 5 to be heated and cooked.

By the way, in such a configuration, the food 7 is subject to very strong radiant heat and convection near the center near the lower heater 4, and is likely to burn. Therefore, in order to be able to bake the food 7 uniformly, as shown in the figure, an inclined surface 8 is provided directly below the lower heater 4 to disperse the radiant heat of the lower heater 4 to the front and rear ends of the food 7. Further, a heat shield plate 9 is provided between the food 7 and the lower heater 4 to block radiant heat and convection. In addition, the upper surface of the food 7, which is difficult to obtain an effect due to such a structure, is provided with a multi-sided reflective plate 10 forming a part of the inner casing 2, so that the radiant heat is dispersed to the front and rear ends of the food 7. The structure was such that it baked evenly as a whole.

Problems to be Solved by the Invention However, if such a device is used, not only will the toaster oven have a very complicated structure, but it will also be necessary to block or disperse the radiant heat and convection from the upper and lower heaters 3.4. Very low energy efficiency, and the upper heater 3
In order to weaken the effects of radiant heat directly beneath the building, there were issues such as the need to provide more spatial distance than necessary.

Furthermore, even if the heating is uniform at first, as the inner casing 2 becomes dirty, the heating becomes uneven.

The present invention solves these conventional problems, and aims to provide a toaster oven that is simple in shape, has excellent toast distribution performance, and has excellent energy efficiency.

Means for Solving the Problems The present invention provides an oven comprising an inner casing forming a cooking chamber, upper and lower heaters installed in the inner casing, and a grill disposed between the upper and lower heaters. A toaster oven characterized in that a shaft part protruding downward is formed in the center of the grill, a fan is attached to the shaft part, and a rotating shaft of a motor is connected to the shaft part. It is.

Function According to the above configuration, the rotation of the motor causes the shaft support to rotate, thereby rotating the grill, so that the food placed on the grill also rotates. If the upper and lower heaters are set so that half of the food can be baked almost uniformly, the rotation of the food can evenly bake the entire food.

Furthermore, a fan installed on the shaft allows hot air to flow and promotes convection, which not only makes roasting distribution more uniform, but also improves thermal efficiency. In addition, near the center of rotation where the radiant heat from the lower heater is most concentrated on the bottom surface of the food, the shaft support formed integrally and protruding downward from the center of the grill serves as a moderate heat shield, making it easy to use. It is possible to achieve excellent firing distribution performance.

EXAMPLE Hereinafter, an example of the present invention will be described based on the accompanying drawings.

In FIG. 1, 11 is a cooking cabinet, 12 is an inner housing forming the cooking cabinet 11, 13 and 14 are upper and lower heaters suspended on the side wall of the inner housing 12 with the cooking cabinet 110 biased to one side, and 15
I6 is a door that opens and closes the front of the cooking chamber 11, and I6 is a grill.

A shaft support 18 that protrudes downward in a conical shape is integrally formed in the center of the grill IG, and a fan 22 is attached to this shaft support 18.
is installed. This fan 22 sucks air from below and blows it upward.

The shaft support 18 is connected to the shaft 17 of a motor 20 via a cap 21. Therefore, this grid 16 is connected to the motor 2
0 axis of rotation! The fan 22 also rotates as the grill 16 rotates.

The rotating shaft 17 of the motor 20 rotates 5 to 6 times per minute.

Next, the operation of the above embodiment of the present invention will be explained.

Upper and lower heaters! Although half of the food 190 placed on the grill 16 is baked almost uniformly by 3.14, the food 19 is also rotated with the rotation of the grill #11&, so the entire food 19 is not cooked. can be baked evenly. In addition, hot air is sent to the upper part by the fan 22 provided on the shaft support 18, and convection is promoted, so that not only the roasting distribution becomes more uniform easily, but also the heat rate can be increased to 9. As described above, according to the configuration of the embodiment of the present invention, in order to uniformly bake the whole food as in the conventional method, radiant heat is dispersed or blocked, the reflective part is bent more, and the upper heater is There is no need to create more spatial distance than necessary to weaken the effects of radiant heat directly below. As a result, it is possible to save space, have a simple shape, and have extremely high energy efficiency. In other words, since a uniform roasting distribution can be easily obtained, it is possible to achieve a higher wattage than before, and also to significantly shorten the cooking time, which can be expected to have great effects in terms of both grilling distribution performance and efficiency.

Further, since the gridiron 16 is moved in a circular motion around the rotating shaft 17 by the motor 20, the speed of any point on the gridiron 16 changes in proportion to the radius of the circular motion. In other words, the speed increases from the center of rotation toward the periphery, and conversely, the thermal effect per unit time leap decreases. For this reason, cooked food 19
The vicinity of the rotating shaft 17L is strongly influenced by the radiant heat from the lower heater 14, and the radiant heat is concentrated, resulting in a state where it is more likely to burn than other parts. However, in the configuration of the above embodiment of the present invention, the grill 16 and the rotating shaft 1
7 is connected to the central part of the grill 16 via a shaft support 18 integrally formed to protrude downward, so that this shaft support 18
serves as a suitable heat shielding member for radiant heat from the lower heater 14,
Furthermore, since the hot air concentrated by the fan 22 is diffused, it is possible to prevent the area above the rotating shaft 17 from becoming too burnt.

Therefore, excellent grilling distribution performance on the lower surface of the food 19 can be achieved. In order to achieve the firing distribution performance like this, the lower heater 14 is fired! There is no need to keep it away from 1li16 or to provide a heat shield plate or a reflective plate, and it is possible to save space, have a simple shape, and have excellent energy efficiency.

Further, in the above embodiment, as shown in FIG. 1, since the conical shaft support 18 connects the grill grate 16 and the cap 21 diagonally, the horizontality of the Ti grate I6 is stable, and therefore, for heavy cooking. The horizontality of the gridiron 16 can also be maintained with respect to the objects 19. Furthermore, the rotary shaft 17 is made of an expensive heat-resistant material such as ceramic to protect the motor 20 from heat, but a fan 22 attached to the shaft support 18 directs the heat near the rotary shaft 17 of the motor 20 to the upper part. Therefore, the temperature near the rotating shaft 17 can be lowered.

Therefore, there is no need to use a heat insulating material or the like. In addition, by lengthening the shaft support 18 and locating the connection part between the cap 21 and the rotating shaft 17 downward, the temperature rise of the rotating shaft 17 can be sufficiently suppressed, so it can be shortened, and as a result, the durability cost of the motor 20 can be reduced. It has a great effect when opened, and the overall size can be made more compact.

As is clear from the detailed description of the invention, the toaster oven of the present invention has a downwardly protruding shaft in the center of the grill, a fan is attached to the shaft, and the shaft is connected to the rotation of the motor. Since it is connected to a shaft and rotates the grilling grate, the food to be cooked also rotates as the grilling grate rotates, and as a result, the entire food can be baked evenly.

In addition, by stirring hot air while sending it upward using a fan installed on the shaft to promote convection, not only can the roasting distribution be easily made more uniform, but also the thermal efficiency can be increased. As a result, it is possible to provide a toaster oven that is space-saving, has a simple shape, and has excellent toasting distribution performance and energy efficiency.

In addition, the shaft support appropriately shields the food near the rotation axis from radiant heat from the lower heater, and the concentrated hot air is diffused by a fan, so the lower heater can be installed in a small space. Excellent grilling distribution performance can be easily achieved even on the bottom surface of the food, where there is little surface area.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a toaster oven showing an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of a conventional toaster oven. 11... Cooking cabinet, 12... Inner casing, 13... Upper heater, 14... Lower heater, 16... Grill, 1
7... Rotating shaft, 18... Shaft support, 22... Fan.

Claims (1)

[Claims] In a toaster oven equipped with an inner casing forming a cooking compartment, upper and lower heaters installed in the inner casing, and a grilling grate disposed between the upper and lower heaters, there is a What is claimed is: 1. A toaster oven characterized in that a shaft portion is formed that protrudes from the shaft, a fan is attached to the shaft portion, and a rotating shaft of a motor is connected to the shaft portion.