JPH01293817A - Oven toaster - Google Patents

Abstract

PURPOSE:To simplify a composition and enable tasty bread to be baked up in a short time, by forming the metal fittings of a face heater only at the sparse section of a heat generator, and by fixing the face heater on the bottom surface of a heating chamber via a stretchable cotton-like heat insulator. CONSTITUTION:Outside the bottom surface 6 of a heating chamber 2, a face heater 7 is set, and in order fix the laminated component parts of the face heater to each other, the heater fitting metal-fittings 8 of stainless steel and the like is set so that an area in contact with the face heater 7 may be as small as possible. Besides, the cotton-like thermal insulation member 9 of the heat insulator of high heat resistance and flexibility not to discharge the heat of the face heater 7 into a main body is butted to the face heater 7, and is set in close contact with the bottom surface 6 of the heating chamber in a state that the insulation member 9 is pressed with a thermal insulation plate 10. As a result, heat loss is reduced, and the heating chamber bottom surface can be efficiently heated, and the ununiformity of heat distribution can be avoided, and so bread can be uniformly baked up.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a toaster oven in which bread or the like is placed on a grill and cooked using the heat of a heating device.

BACKGROUND OF THE INVENTION FIG. 4 is an exploded perspective view showing various parts constituting a conventional planar heater on the outside bottom of a heating chamber.

In FIG. 4, the sheet heater 13 has a heating element 13a,
It is wound around a rectangular winding frame 13b made of a heat-resistant insulating material such as mica that corresponds to the shape of a loaf of bread, and insulating plates 13c made of mica or the like are placed inside the top and bottom of the winding frame 13b.

It has a configuration in which it is sandwiched between 13d and 13d. Heater mounting bracket 14
is fixed to the planar heater 12 with eyelets or the like (not shown), and this heater mounting bracket 14 is fixed with stepped screws 17.
The sheet heater 13 is sandwiched and tightened on the bottom surface of the heating chamber via the heating chamber.

Further, 15 is a heat insulating material that prevents heat from escaping to the outside, and 16 is a heat insulating plate that holds and fixes the heat insulating material 15.

Problem to be Solved by the Invention However, in the heater mounting bracket 14 that fixes the planar heater 13 to the bottom of the heating chamber in this way, the heat of the heating element 13a is effectively heated until the temperature rises sufficiently. temperature is not reached, resulting in large heat loss. As a result, when the surface of the bread becomes browned due to the long baking time, the heat reaches the inside of the bread, resulting in a dry bread with no moisture inside. In addition, the heating element 13a
If the bottom surface of the heating chamber is distorted due to the heat distribution (depending on the degree of density of the winding shape), the planar heater 13 is fixed by the heater mounting bracket 14, and the heater mounting plate 13 is flexible. As a result, a gap is created between the sheet heater 13 and the bottom of the heating chamber, resulting in uneven heat distribution, resulting in uneven toasting of the bread, resulting in very unappealing toast. Ta.

The present invention solves these conventional problems and provides a toaster oven that has a simple configuration and can bake bread with good flavor in a short time.

Means for Solving the Problems In the toaster oven of the present invention, the mounting bracket for the planar heater is limited to the part where the heating element is sparsely spaced, and the planar heater is insulated through a stretchable cotton-like heat insulating material. It is fixed to the bottom of the heating chamber using a piece of material.

Function: According to the heating device of the present invention, the heater mounting plate is necessary only to prevent the laminated components constituting the planar heater from dispersing, so it can be made small enough to cover only a part of the heating element. be able to. In addition, since there is no need for strength and it can be made thin, heat loss is extremely small, and the bottom surface of the heating chamber can be heated efficiently, so that bread can be baked in a short time. However, by fixing the sheet heater to the bottom of the heating chamber through a stretchable cotton-like insulation material, the entire area of the sheet heater can be pressed tightly against the bottom of the heating chamber. Even if the bottom of the heating chamber is thermally distorted, the cotton-like heat insulating material can press the sheet heater against the bottom of the heating chamber and keep it in close contact, eliminating uneven heat distribution. , you can bake bread evenly.

Embodiment 5 8- Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing the toaster oven according to the present invention with the door open.

In FIG. 1, a heating chamber 2 for heating and cooking an object to be heated is provided in a main body 1, and an upper heater 3 in which a coil-shaped heating element is inserted into a pipe is provided above the heating chamber 2.

A grill 4 on which food is placed is provided on the bottom surface of the heating chamber 2, and two slices of bread 5 are placed on the left and right sides of the grill 4.

FIG. 2 is a right side sectional view showing the internal structure of the toaster oven. A planar heater 7 is provided on the outside of the bottom surface 6 of the heating chamber 2, and a heater mounting bracket 8 made of heat-resistant, corrosion-resistant stainless steel or the like is attached to the planar heater in order to fix the laminated structure parts of the planar heater to each other. It is provided so that the area in contact with the heater 7 is as small as possible. 9 is made of a cotton-like heat insulating material that is a heat insulator with high heat resistance and flexibility such as glass fiber, which is provided to prevent the heat of the planar heater 7 from escaping into the main body (outside the heating chamber). , 6 ・＼−
7 It is in contact with the planar heater 7 and is fixed to the bottom surface 6 of the heating chamber while being pressed by the heat insulating plate 10, so that the planar heater 7 is brought into close contact with the bottom surface 6 of the heating chamber.

FIG. 3 is an exploded perspective view showing each component constituting the sheet heater 7. As shown in FIG.

The planar heater 7 has a heating element 7a wound around a winding frame 7b made of a heat-resistant insulator such as mica that corresponds to the shape of the object to be heated such as bread, and an insulating plate 7c made of mica or the like above and below.
, 7d. The heater mounting plate 8 is the component part (7a, 7b) of the planar heater 7 having the laminated structure.
, 7c, 7d) are provided to integrate them in order to prevent them from dispersing. Fastening metal fittings such as rivets and holes 1
It is used as a pedestal for 2. Therefore, the heater mounting plate 8 is made as small as possible so as not to directly face the heating element 7a, and a conical aperture is provided in the center to reduce the contact area with the planar heater 7. There is. In this way, the pre-integrated planar heater unit is
Vacuum planar heater 7 - A heat insulating plate 10 is installed via a cotton-like heat insulating material 9 that covers the entire area of one unit.
It is fixed to the bottom of the heating chamber with stepped screws 11. The degree to which the sheet heater 7 is brought into close contact with the bottom surface of the heating chamber may be determined by appropriately selecting the thickness and density of the cotton-like heat insulating material and the aperture height of the heat insulating plate 10.

Effects of the Invention As described above, the present invention can exhibit the following effects.

(1) The metal fitting that fixes the sheet heater to the bottom of the heating chamber is not directly opposed to the heating element, but is installed through a cotton-like insulating material, which is a thermal insulator, so heat is removed from the heating element and to the heater fixing metal fitting. Heat is effectively transferred to the bottom of the heating chamber because the heat loss is reduced. Therefore, the speed at which heat is transmitted to the bread becomes faster, the time required to bake the surface can be shortened, and even when the surface is well browned, a good result can be obtained, with moisture still remaining inside.

(2) Expanding and contracting the planar heater to the bottom of the heating chamber. Since the cotton-like heat insulating material allows for close contact, the planar heater can be reliably attached to the bottom of the heating chamber even in cold and hot conditions.
The heat of the planar heater is efficiently transmitted to the bottom of the heating chamber, which not only shortens the baking time of the bread, but also eliminates uneven heat distribution caused by gaps between the heating element and the bottom of the heating chamber. This eliminates the unevenness of grilling during cooking, making it possible to bake in good condition.

(3) Since the metal fittings that fix the sheet heater in the heating chamber are not directly opposed to the heating element, the temperature during use can be lowered, so there is no need to use expensive heat-resistant and corrosion-resistant stainless steel, etc., making it cheaper. It is possible to form fixing metal fittings and is safe without deterioration of performance due to corrosion.

(4) Since the non-charged metal body that sandwiches the sheet heater is on almost half of one side (the bottom surface of the heating chamber), the capacitance generated between the heating element and the above-mentioned non-charged metal body can be reduced, reducing leakage current. This improves safety.

(5) A planar heater is placed on the bottom of the heating chamber9
, .

Therefore, there are no protrusions near the bottom of the heating chamber. Therefore, when food is stored in the heating chamber, during cooking, or when food is taken out at the end of cooking, if food particles that fall or boil over adhere to the bottom of the heating chamber, it is easy to wipe them off and keep them clean forever. We can provide a toaster oven.

[Brief explanation of the drawing]

Figure 1 shows a toaster oven according to an embodiment of the present invention.
Figure 2 is a right sectional view showing the internal structure of the heater, Figure 3 is an exploded perspective view of the parts that make up the heater, and Figure 4 is the conventional heater. FIG. 2 is an exploded perspective view showing the configuration of a planar heater. 1... Body, 2... Heating chamber, 3...
・Upper heater, 4... Grid, 5... Bread, 6... Bottom of heating chamber, 7... Planar heater, 7a... ...Heating element, 7b...
Winding frame, 7c... Insulator, 7d... Insulator, 8... Heater mounting bracket, 9... Cotton-like insulation material, 10...・Insulation board. Name of agent: Patent attorney Toshio Nakao and 1 other person f-
m-Main body Fig. 3 Fig. 2

Claims (1)

[Claims] A heating chamber for storing and heating an object to be heated in the main body, and a plurality of heating devices for raising the atmospheric temperature in the heating chamber, at least one of the heating devices being provided on an outer wall surface of the heating chamber. The planar heater has a winding frame around which a heating element is wound, and an insulator on both sides of the winding frame, one of the insulators is brought into contact with the outer wall surface of the heating chamber, and the other insulator is in contact with the outer wall surface of the heating chamber. A toaster oven having a structure in which a non-metallic heat insulating material is provided facing the body, and the planar heater is fixed to the outer wall surface of the heating chamber by a heat insulating plate made of a thin metal plate via the non-metallic cotton-like heat insulating material.