JPH04257622A - Cooking device - Google Patents

Abstract

PURPOSE:To make heat generated by a heater located beneath a heating chamber bottom plate hardly disperse into the surroundings of a heating chamber to improving efficiency in heating food, and avoid uneven heating in the vicinity of a through-hole for a turntable shaft which is located around the center of the turntable bottom plate. CONSTITUTION:A plate heater 8 is located below a heating chamber bottom plate 4, and a good heat-conductive plate 12, that has a higher heat-conductance than that of the bottom plate 4, is attached on outer surface of the heating chamber bottom plate 4 so as to efficiently transfer heat generated by the heater 8 to the heating chamber bottom plate 4. In addition, a good heat- conductive plate 12 is arranged at least in the vicinity of a through-hole 6 for a turntable shaft 7 that is located around the center of the heating chamber bottom plate 4 so as to positively transfer heat from the plate heater 8 to around the through-hole 6.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooking device for cooking food using a heater.

0002

[Prior Art] In a cooking device that heats food using a heater, as shown in Japanese Utility Model Publication No. 2-24006, it is necessary to suppress dissipation of heater heat to the outside of the heating chamber as much as possible, but this is still insufficient. has not been done.

0003

SUMMARY OF THE INVENTION The present invention aims to significantly suppress the radiation of heater heat to the outside of the heating chamber.

0004

[Means for Solving the Problems] The cooking device of the present invention has a first
The configuration includes a heating chamber that stores food, a turntable that rotates the food within the heating chamber, a turntable motor that is disposed below the bottom wall of the heating chamber, and a turntable that is formed on the bottom wall of the heating chamber. a shaft that passes through the hole and transmits the driving force of the motor to the turntable; a heater for heating food disposed outside the bottom wall of the heating chamber; and a material having better thermal conductivity than the bottom wall of the heating chamber. and a good heat conductive member fixed to the outer surface of the bottom wall of the heating chamber at least near the hole.

Furthermore, as a second configuration, a heating chamber for storing food, a heater for heating the food in the heating chamber, a heat insulating plate located outside the wall of the heating chamber, and a heat insulating plate fixed to the wall of the heating chamber by welding are provided. and a wire that bends and holds the heat insulating plate.

[0006] Furthermore, as a third configuration, a heating chamber for storing food, a heater located outside the wall of the heating chamber to heat the food, and a heat insulator located so as to sandwich the heater together with the wall of the heating chamber. It consists of a plate, and a wire that is welded and fixed to the heating chamber wall, is spaced from the heater, and bends and holds the heat insulating plate.

[0007]

[Operation] In the first configuration, the heater heat is efficiently transmitted to the bottom wall of the heating chamber through the good heat conduction member and further transmitted into the heating chamber, and the heater heat is extremely difficult to dissipate to the outside of the heating chamber. In addition, in this configuration, the hole for passing the shaft is formed near the center of the bottom wall of the heating chamber, so if left as is, the temperature in the heating chamber near this hole would inevitably become low and uneven heating would occur. Since the good heat conductive member is fixed to the outer surface of the bottom wall of the heating chamber at least in the vicinity of the hole and the heater heat is well transmitted to the vicinity of the hole, uneven heating in the vicinity of the hole is eliminated.

In the second configuration, the wire that attaches the heat insulating plate to the heating chamber has a small diameter and a small contact area with the heating chamber wall, and the amount of heater heat that is transmitted through this wire and dissipated to the outside of the heating chamber is small. suppressed.

In the third configuration, the wire that attaches the heat insulating board to the heating chamber has a small diameter and has a small contact area with the wall of the heating chamber, and is spaced apart from the heater sandwiched between the wall of the heating chamber and the heat insulating board. The lever is not in contact with the heater, and the amount of heater heat transmitted through the wire and dissipated to the outside of the heating chamber is suppressed.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show a cooking device according to a first embodiment of the present invention. A heating chamber 1 for storing food is provided within the cooking device main body 2, and the food is rotated by a turntable 3 within the heating chamber 1. This turntable 3 is rotated by the driving force of a turntable motor 5 disposed below the bottom wall 4 of the heating chamber being transmitted through a shaft 7 passing through a hole 6 formed in the center of the bottom wall of the heating chamber. The food is placed on the heating chamber bottom wall 4.
Heating is performed by a plane heater 8 placed outside the heating chamber and a halogen heater 10 placed outside the heating chamber upper wall 9, and by microwaves supplied from a magnetron 11. On the outer surface of the heating chamber bottom wall 4, near the center of the heating chamber bottom wall including the vicinity of the hole 6, there is a good heat conductive plate 12 made of aluminum or the like having better thermal conductivity than the heating chamber bottom wall 4. Fixed by spot welding. This good heat conduction plate 12 has a similar shape to the bottom wall 4 of the heating chamber, and is approximately the same size as the motor 5, and is sandwiched between the bottom wall 4 of the heating chamber and the planar heater 8. Further, the planar heater 8 is covered with a heat insulating unit 15 consisting of a heat insulating material 13 and a heat insulating plate 14.

In such a structure, the heat from the planar heater 8 is efficiently transmitted to the bottom wall 4 of the heating chamber via the good heat conduction plate 12 and further into the heating chamber 1, and is transferred to the heat insulating unit 15. Due to the insulation effect of the heating chamber, it is extremely difficult for it to dissipate into the area outside the heating chamber. In this case, the temperature rise of the lower motor 5 is suppressed. In addition, there is a hole 6 for passing through the shaft near the center of the bottom wall of the heating chamber, and there is no planar heater 8 in this vicinity, so if this continues, the temperature in the heating chamber near the hole 6 will inevitably become low. There was uneven heating, but since the good heat conduction plate 12 is fixed near the hole 6 on the outer surface of the bottom wall of the heating chamber, the heat from the flat heater 8 is efficiently transmitted to the vicinity of the hole, which eliminates the uneven heating near the hole. is resolved.

FIGS. 3 and 4 show a cooking appliance according to a second embodiment of the present invention, and the same parts as those in the first embodiment are denoted by the same reference numerals, and the explanation thereof will be omitted. The heat insulating unit 15 is located outside the bottom wall 4 of the heating chamber so as to sandwich the flat heater 8 together with the bottom wall 4 of the heating chamber. A plurality of small holes 16, 16, . . . are formed at appropriate positions on the periphery. On the other hand, the heating chamber bottom wall 4 has these small holes 16, 16.
A plurality of wires 17, 17... facing each other are fixed by stud welding. And the small holes 16, 16...
・The insulation unit 15 is brought close to the bottom wall 4 of the heating chamber so that the wires 17, 17... pass through, and then the wires 17
, 17 . . . and hold the heat insulating plate 14 with these wires, the heat insulating unit 15 is attached. At the time of this installation, the planar heater 8 is pressed by the heat insulating unit 15 and is in close contact with a seat pressing portion 18 formed near the center of the bottom wall 4 of the heating chamber.

In this case, the wires 17, 17...
Since the diameter is as small as about 1 mm to 1.5 mm, the area in contact with the bottom wall 4 of the heating chamber is small, and the amount of heater heat transmitted through the wires 17, 17, . . . and dissipated to the outside of the heating chamber is suppressed. Further, the wires 17, 17, .
The amount of heater heat dissipated to the outside of the heating chamber through ... is further suppressed. In addition, the wires 17, 17, etc. are not specially processed and are inexpensive.

[0014]

[Effects of the Invention] In the first configuration, the heater heat is efficiently transmitted into the heating chamber through the good heat conduction member, so it is extremely difficult to dissipate to the outside of the heating chamber, and food heating efficiency is improved. Furthermore, even with a configuration in which a hole for passing the shaft is formed near the center of the bottom wall of the heating chamber, the heat of the heater is well transmitted to the vicinity of this hole due to the above-mentioned good heat conduction member, so uneven heating near the hole is eliminated. .

[0015] In the second and third configurations, the amount of heater heat dissipated to the outside of the heating chamber through the wire that attaches the heat insulating plate to the heating chamber is small, and food heating efficiency is similarly improved. Moreover, the above-mentioned wire can be procured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of a cooking device according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of the cooking device according to the first embodiment of the present invention.

FIG. 3 is a sectional view of a main part of a cooking device according to a second embodiment of the present invention.

FIG. 4 is an exploded perspective view of a cooking device according to a second embodiment of the present invention.

[Explanation of symbols]

1 Heating chamber 3 Turntable 4 Heating chamber bottom wall 5 Turntable motor 6 Hole 7 Shaft 8 Planar heater 12 Good heat conductive plate 14　Insulation board 17 Wire

Claims (3)

[Claims] 1. A heating chamber for storing food, a turntable for rotating the food within the heating chamber, a turntable motor disposed below the bottom wall of the heating chamber, and a turntable motor disposed on the bottom wall of the heating chamber. a shaft that passes through the hole and transmits the driving force of the motor to the turntable; a heater for heating food disposed outside the bottom wall of the heating chamber; and a good heat conductive member fixed to the outer surface of the bottom wall of the heating chamber at least in the vicinity of the hole. 2. A heating chamber for storing food, a heater for heating the food in the heating chamber, a heat insulating plate located outside a wall of the heating chamber, and a heat insulating plate fixed to the wall of the heating chamber by welding. A cooking utensil consisting of a wire that bends and holds the wire. 3. A heating chamber for storing food, a heater located outside the wall of the heating chamber to heat the food, a heat insulating plate located to sandwich the heater together with the wall of the heating chamber, and a heating chamber for heating the food. A cooking device comprising a wire welded and fixed to a chamber wall, spaced apart from the heater, and bending and holding the heat insulating plate.