JPH0384319A - Cooker - Google Patents

Abstract

PURPOSE:To facilitate cleaning of a bottom surface of a cooking room without causing a heater to be removable by a method wherein at least a part of the bottom wall of the cooking room is formed by a heat transfer plate member and then the heater is arranged at a lower location of the plate member. CONSTITUTION:In case of performing an oven cooking operation, heaters 18 and 22 are electrically energized. In this case, a turn table 20 on which a cooked item is placed is rotationally driven by a motor 19. In this way, the cooked item is heated and cooked by both heaters 18 and 22. In particular, radiation heat from the lower heater 18 passes through a heat transfer glass plate 16 to radiate against the cooked item within a cooking room 13 so as to heat it. In this case, a part of a bottom wall 15 is made by the heat transfer glass plate 16 and the heater 18 is arranged at the lower location, so that in case of cleaning the bottom surface of the cooking room 13, it is not hindered by the heater 18, but its cleaning may easily be carried out and further the heater 18 may not be damaged. In addition, the heater 18 is not needed to be removed, resulting in making no troublesome operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Industrial Application Field) The present invention relates to a heater for cooking food in a cooking chamber.

(Prior Art) Conventionally, for example, a microwave oven with an oven function has a configuration in which a heater 3 is disposed near a bottom wall 2 of a cooking chamber 1, as shown in FIG. Note that 4 is a motor shaft for heating the turntable that penetrates the bottom wall 2 and projects into the cooking chamber.

(Problems to be Solved by the Invention) By the way, the bottom surface of the cooking chamber 1 tends to be relatively dirty and is cleaned frequently. However, in the above-mentioned method, since the heater 3 is located at the bottom of the cooking chamber 1, there is a risk that the heater 3 may get in the way and be damaged while cleaning. As a countermeasure to this problem, there is a device in which the heater 3 is made removable, but with this device, it is troublesome to attach and detach the heater, and there is also a risk of damaging the heater when attaching and detaching it.

The present invention has been made in view of the above circumstances, and its object is to provide a cooking appliance that allows cleaning of the bottom of the cooking chamber without damaging the heater without having to make the heater removable. There is something to do.

[Structure of the Invention] (Means for Solving the Problems) In the present invention, at least a part of the bottom wall of the cooking chamber is formed by a heat-permeable plate member, and a heater is provided in the lower part of this plate member. It has some characteristics.

In this case, at least the rear part of the bottom wall of the cooking chamber may be formed of a heat-permeable plate member, and a heater may be provided at a lower portion of the plate member at the rear of the cooking chamber.

(Function) The radiant heat of the heater passes through the heat-permeable rear side and irradiates and heats the food to be cooked in the cooking chamber.

Since the plate member constitutes a bottom wall and the heater is located below the bottom wall, when cleaning the bottom of the cooking chamber, the cleaning can be done easily without being obstructed by the heater. There is no risk of overheating the heater.

In this case, if the heater is configured such that at least the rear part of the bottom wall of the cooking chamber is formed of a heat-permeable plate member and is provided at a lower part of the plate member in the rear part of the cooking chamber, the heater can be installed in the cooking chamber where users often come close to the heater. It is easy to use because the front part does not get hot.

(Example) Hereinafter, a first example of the present invention will be described with reference to FIGS. 1 to 3.

Reference numeral 11 denotes an outer box of a microwave oven with an oven function, and a casing 12 with an open front is disposed inside the casing, and the inside of the casing 12 serves as a cooking chamber]3. and outer box 1
A door 14 is provided on the front side of 1. Said cooking chamber 13
The bottom wall 15 is formed from the lower plate portion 12a of the housing 12 and a heat-permeable and heat-resistant glass plate 16, which is a heat-permeable plate member. That is, the lower plate portion 12a
In the rear part of the cooking chamber 13, a recessed part 17 having an inverted trapezoidal cross section and extending in the left-right direction is formed, and the upper opening periphery of the recessed part 17 has a step corresponding to the thickness of the glass plate 16. A mounting portion 17a is formed. However,
A peripheral portion of the glass plate 16 is placed on this placing portion 17a, so that part of the bottom wall 15, in this case the rear portion, is made of the heat-permeable glass plate 16. Reference numeral 18 denotes a heater, which is disposed within the recessed portion 17, and is thus provided at a lower portion of the glass plate 16, particularly at a rear portion. Reference numeral 19 designates a turntable driving motor disposed at the inner bottom of the outer box 11, and its shaft 19a extends through the bottom wall 15, in this case the lower plate portion 12a, and projects into the cooking chamber 13. This shaft 19
A turntable 20 is removably attached to a. The glass plate 16 and the heater 8 are located at the rear of the motor 9. Further, a bulge 21 that projects upward is formed on the upper plate portion 12b of the housing 12, and a heater 22 is disposed in this bulge 2. 23 is a magnetron, and 24 is a waveguide.

Now, in the above configuration, electricity is supplied to the heaters 8 and 22 when oven cooking is performed. In this case, the turntable 20 on which the food to be cooked is placed is rotationally driven by the motor 19. Thus, the food to be cooked is heated and cooked by both heaters 8.22. In particular, the radiant heat from the lower heater 8 passes through the heat-transparent glass plate 16 and irradiates and heats the food to be cooked in the cooking chamber 13.

According to this embodiment, the heat-transmissive glass plate 16
Since it forms a part of the bottom wall 15 and the heater 8 is provided below it, when cleaning the bottom surface of the cooking chamber 13, cleaning can be easily carried out without being obstructed by the heater 8. There is no risk of damaging the heater 8. Furthermore, since there is no need to remove the heater 8,
Unlike a heater that requires cleaning by attaching and detaching the heater, there is no need to attach or detach the heater.

In this case, the heater 8 is particularly provided at a rear part of the lower part of the cooking chamber 13 than the bottom wall 15, so that the front part of the cooking chamber 13, especially the door 14 part, is high. Easy to use as it doesn't get hot.

FIG. 4 shows a second embodiment of the present invention, which differs from the first embodiment in the following points. That is, the lower plate portion 1 of the housing 12
2a is formed with an opening 25 instead of a depression, and a mounting portion 25a is formed around the periphery of this opening 25. A glass plate 16 is placed on this placement portion 25a. A reflecting plate 26 having an inverted trapezoidal cross section is attached to the opening 25.
A heater 18 is arranged on this reflection plate 26. Further, a large number of small holes 27 having a diameter of 2 to 5 mm are formed in this reflecting plate 26. According to this second embodiment, the thermal efficiency can be improved by the reflective plate 26, and by providing the small holes 27, it is possible to prevent water, broth, etc. from accumulating when they flow into the reflective plate 26. In addition, the size of the small hole 27 (
By setting the diameter (diameter) to 2 to 5 mm, microwaves will not leak when used as a microwave oven.

FIG. 5 shows a third embodiment of the present invention, which differs from the second embodiment in the following points.

That is, the mounting portion 25a at the peripheral edge of the opening 25 has a groove 28.
A large number of small holes 29 are formed in the groove portion 28 to pass through the peripheral edge of the fouling plate 26. According to this example,
Even if water, broth, etc. flows between the lower plate portion 12a and the glass plate 16, the groove portion 28 prevents it from flowing into the reflection plate 26, and the presence of the two small holes prevents water or liquid from flowing into the groove portion 28. There is no accumulation of broth etc.

In each of the above-described embodiments, a part of the bottom wall of the cooking chamber 13 is made of a heat-resistant plate member, but the entire bottom wall of the cooking chamber 13 may be made of a heat-resistant plate member. It may be configured.

The pond water invention is not limited to the above embodiments, for example,
The present invention can be widely applied to all heating cookers having heaters, and can be modified in various ways without departing from the spirit of the invention.

[Effects of the Invention] As is clear from the above description, the present invention can obtain the following effects.

In the cooking device of the first aspect, the bottom surface of the cooking chamber can be easily cleaned without damaging the heater, even if the heater is not configured to be detachable.

In addition to the above-mentioned effects, the cooking device according to the second aspect of the invention has the advantage that the front portion of the cooking chamber, where users often come close to the cooking chamber, does not reach a high temperature, making it easy to use.

[Brief explanation of drawings]

1 to 3 show a first embodiment of the present invention, in which FIG. 1 is an overall longitudinal sectional side view, FIG. 2 is a longitudinal sectional front view of the casing, and FIG. 3 is a partial perspective view. be. FIG. 4 and FIG. 5 are vertical sectional side views of essential parts showing a second embodiment and a third embodiment of the present invention, respectively. FIG. 6 is a diagram corresponding to FIG. 3 showing a conventional example. In the figure, 11 is the outer box, 12 is the housing, 12a is the lower plate part, 13
1 is a cooking chamber, 15 is a bottom wall, 16 is a glass plate (plate member), 1
8 is a heater, 26 is a reflector, 27 is a small hole, 28 is a groove,
Two are small holes.

Claims (1)

Claims: 1. A cooking appliance characterized in that at least a portion of the bottom wall of the cooking chamber is formed of a heat-permeable plate member, and a heater is provided below the plate member. 2. A cooking appliance characterized in that at least the rear part of the bottom wall of the cooking chamber is formed of a heat-permeable plate member, and a heater is provided in the lower part of the plate member at the rear of the cooking chamber.