JPH0571744A - Cooking oven - Google Patents

Abstract

PURPOSE:To efficiently perform cooking in an oven, such as toasting, baking, etc., and diminish the irregularity in cooking. CONSTITUTION:An upper heater 9 with a halogen lamp and a reflection plate 11 which reflects the heat radiated from the upper heater 9 are mounted on a ceiling 2a of a heating compartment 2. The reflection plate 11 is turned by a pulse motor 14. For example, in the case of toasting, the reflection plate 11 is fixed in a place shown in the drawing, and in the case of baking, etc., the reflection plate 11 is alternately turned forward and backward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating cooker provided with a heater on a ceiling of a heating chamber and a reflecting plate for reflecting the heat of the heater.

[0002]

2. Description of the Related Art In a heating cooker, for example, a microwave oven having an oven function and a toaster function, a lower heater is provided at the bottom of a heating chamber and a tubular upper heater composed of a halogen heater or the like is provided at the ceiling of the heating chamber. There is also a structure in which a reflector for reflecting the heat of the upper heater to the heating chamber side is provided.

[0003]

The shape of the reflector of the upper heater is set so that the bread can be efficiently baked in accordance with, for example, toast cooking.

However, when the reflector plate has a shape suitable for toast cooking, the toast cooking can be carried out efficiently, but in the case of oven cooking, the cooking area becomes narrower and uneven heating, and thus uneven cooking. There was a problem that it was likely to occur.

At this time, although the cooking unevenness could be somewhat improved by rotating the turntable, it could not be sufficiently improved.

It is considered that the reflecting plate has a shape suitable for oven cooking. However, in such a case,
There is a problem that the efficiency when performing toast cooking is reduced.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to efficiently perform both toast cooking and oven cooking, and improve cooking unevenness, and a heater. (EN) It is possible to provide a heating cooker capable of preventing a decrease in heating efficiency due to, and further improving protection and safety of a heater.

[0008]

According to the present invention, a heater and a reflecting plate for reflecting the heat of the heater are provided on the ceiling of a heating chamber, and the reflecting plate is configured to be rotatable, and It is characterized in that a driving means for rotating the reflecting plate is provided.

Then, it is preferable that the reflecting plate can be rotated to an inversion position for covering the heater from the heating chamber side.

Further, it is preferable that the reflecting plate is rotated to the reversal position by the driving means when the door for opening and closing the heating chamber is opened.

[0011]

When the reflector is reciprocally rotated by the driving means during cooking by the heater, the area where the heat reflected by the reflector is radiated can be widened as compared with the case where the reflector is fixed. It is possible to reduce uneven heating of the object to be heated.

Among heating cookers, particularly in a microwave oven, for example, by rotating a reflector to an inversion position during range cooking, the objects scattered from the object to be heated during range cooking cause the surface of the heater and the reflection of the heater. It is possible to prevent the reflecting surface of the plate from becoming dirty.

In the case of cooking with a heater,
By rotating the reflector to the reverse position when cooking is completed or when the door of the heating chamber is opened, it is possible to prevent the object from touching the heater when moving items in and out of the heating chamber. it can.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a microwave oven as a heating cooker will be described below with reference to the drawings.

In FIG. 3 showing the appearance of the microwave oven, a heating chamber 2 is formed in the main body 1, and the heating chamber 2 is
It is designed to be opened and closed by the door 3. Also, the main body 1
An operation panel 4 is provided on a front side portion of the device, and an operation unit 5 for selecting a cooking menu and the like and a display unit 6 are provided on the operation panel 4.

At the bottom 2a of the heating chamber 2, a planar lower heater 7 is provided and a turntable 8 is provided.
Is provided.

Further, as shown in FIGS. 1 and 2, a tubular upper heater 9 made of, for example, a halogen lamp is arranged on the ceiling portion 2b of the heating chamber 2 so as to extend in the left-right direction. Moreover, the heater 9 is covered from the heating chamber 2 side by a cover 10 having a large number of punching holes 10a formed therein.

Both ends of the upper heater 9 are held by the left and right side plates 11a of the reflector plate 11 (only the right side is shown in FIGS. 1 and 2), and the right side plate 11a of the reflector plate 11 is supported. A support 12 having a shaft 12a is attached.

A pulse motor 14 as a driving means is provided on the right side of the reflection plate 11 via a mounting plate 13, and the shaft 14 of the pulse motor 14 is provided.
The support shaft 12a of the support tool 12 is connected to a. In addition,
The pulse motor 14 is configured to detect its rotational position by a known means.

Although not shown, a support similar to the support 12 is also attached to the side plate 11a on the left side of the reflection plate 11, and the support shaft of the support is rotatably supported by the main body 1. Has been done.

As shown in FIG. 1, the reflection plate 11 is formed in a mountain shape whose lower side is open and in a shape suitable for, for example, toast cooking, and the support member 12 is supported by the pulse motor 14. In addition to being configured to be capable of reciprocating rotation about a shaft 12a within a predetermined range, as shown in FIG. 7, it is also possible to rotate the upper heater 9 to a reversing position that covers the upper side of the heating chamber 2 from below. There is. Further, in this case, when the reflection plate 11 is rotated, the heater 9 is also rotated together with the reflection plate 11 about the support shaft 12a of the support tool 12.

On the other hand, in FIG. 4 showing the electrical configuration, a microcomputer 15 as a control means has a preset control program and is a door switch which responds to the opening and closing of the operation section 5 and the door 3. 16 signals are input, and the display unit 6, the lower heater 7, the upper heater 9, the pulse motor 14, the magnetron 17, the turntable motor 18 and the like are controlled based on a control program.

Next, the operation of the above configuration will be described. When performing the toast cooking, as shown in FIG. 5, the toast cooking is selected by the operation unit 5 with the bread 19 placed on the tar table 8 and the door 3 closed.

Then, the pulse motor 14 is energized and controlled so that the reflector 11 is rotated to a position for covering the upper heater 9 from above as shown in FIGS. 1, 2 and 5, and is held at that position. Upper heater 9 and lower heater 7
Is energized, and the bread of the bread 19 is heated by the heaters 9 and 7.
Is burned.

At this time, since the shape of the reflection plate 11 is set to a shape suitable for toast cooking, the heat reflected by the reflection plate 11 is efficiently radiated to the loaf bread 19, and the toast cooking efficiency is improved. You can do it well.

When the toast cooking is completed (the upper heater 9 and the lower heater 7 are cut off), the pulse motor 14 is energized and the reflector 11 is rotated to the inversion position shown in FIG. To be done.

In the case of cooking in the oven, as shown in FIG.
As shown in FIG. 2, the square top plate 20 on which the food is placed is placed in the heating chamber 2
The oven cooking is selected by the operating portion 5 while the door 3 is placed on the receiving portion 21 provided inside and the door 3 is closed.

Then, with the upper heater 9 and the lower heater 7 being energized, the pulse motor 14 is controlled to turn on and off, and the reflector 11 covers the upper heater 9 from above as shown in FIG. The support 12 is reciprocally rotated about the support shaft 12a.

By the reciprocating rotation of the reflection plate 11, the region where the heat reflected by the reflection plate 11 is radiated moves, so that the region to be heated is widened and the heating unevenness of the object to be heated, As a result, uneven cooking can be prevented as much as possible.
Therefore, this oven cooking can also be efficiently performed.

When the oven cooking is completed (the upper heater 9 and the lower heater 7 are cut off), the pulse motor 14 is energized to control the reflection plate 11 as shown in FIG. It is rotated so as to be in the inverted position shown in.

On the other hand, in the case of performing range cooking by the magnetron 17, the cooked object is placed on the turntable 8 and the door 3 is closed, and the range cooking is selected by the operation unit 5.

Then, the turntable motor 18 is energized to rotate the turntable 8, the energization of the McNetron 17 is controlled, and the cooking object is irradiated with a high frequency to perform range cooking.

At this time, the reflection plate 11 is held at the inverted position shown in FIG. 7, and the objects scattered from the object to be heated during the range cooking are on the surface of the upper heater 9 and the reflection plate 11. It is possible to prevent the surface of the upper heater 9 and the reflective surface of the reflective plate 11 from being contaminated by sticking to the reflective surface.

When the range cooking is completed, the magnetron 17 and the turntable motor 18 are cut off. At this time, the reflection plate 11 is still held at the reverse position shown in FIG.

According to the above-described embodiment, in the case of toast cooking, by fixing the reflection plate 11 to a position where it covers the upper heater 9 from above, toast cooking can be favorably performed. In the case of oven cooking, the reflection plate 11 is reciprocally rotated at a position where the reflection plate 11 covers the upper heater 9 from above, so that the area where the heat reflected by the reflection plate 11 is radiated can be widened. In addition, it is possible to reduce heating unevenness of the object to be heated, and it is possible to perform excellent oven cooking.

In addition, when performing range cooking, the reflector 1
By rotating 1 to the reverse position where it covers the upper heater 9 from below, it is possible to prevent the surface of the upper heater 9 and the reflecting surface of the reflector 11 from being soiled by the objects scattered from the object to be heated during range cooking. As a result, it is possible to prevent the heating efficiency of the upper heater 9 from decreasing.

By the way, in the above-mentioned embodiment, the upper heater 9 is always covered with the cover 10 from the lower side. However, in the case of the structure without the cover 10, the object is put in and taken out from the heating chamber 2. When doing so, there is a risk that an object may come into contact with the upper heater 9 or the upper heater 9 may be broken by an impact, which is dangerous.

In this respect, according to the above-mentioned embodiment, at the end of each cooking, the reflector 11 is rotated to the inversion position where it covers the upper heater 9 from below, so that the upper heater 9 is moved from below by the reflector 11. Since the state is covered (from the heating chamber 2 side), it is possible to reliably prevent the item from coming into contact with or impacting the upper heater 9 when the item is taken in and out of the heating chamber 2. The upper heater 9 can be protected and the safety can be improved.

Further, in the above embodiment, the reflector 11 is rotated to the reverse position at the end of each cooking, but instead of this, when the door 3 is opened, it responds to the door switch 16. The reflection plate 11 may be rotated to the reverse position.

[0040]

According to the heating cooker of the first aspect,
In the case of cooking using the heater provided on the ceiling of the heating chamber, by appropriately rotating the reflecting plate according to the cooking,
Both toast cooking and oven cooking can be efficiently performed, and cooking unevenness can be improved.

According to the heating cooker of the second aspect, especially when the reflecting plate is rotated to the reverse position during range cooking, the objects scattered from the object to be heated during range cooking. Thus, it is possible to prevent the surface of the heater and the reflecting surface of the reflecting plate from being contaminated, and thus prevent the heating efficiency of the heater from being lowered.

Further, when the reflecting plate is rotated to the reverse position at the end of cooking, contact with the heater can be surely avoided when an object is taken in and out of the heating chamber, and the heater is protected. It is possible to improve the safety.

According to the heating cooker of the third aspect, the reflector is rotated to the reverse position when the door is opened. Therefore, when an object is put in or taken out of the heating chamber as in the case described above. In addition, contact with the heater can be reliably avoided, the heater can be protected, and safety can be improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of essential parts showing an embodiment of the present invention.

FIG. 2 is a vertical sectional front view taken along the line AA in FIG.

FIG. 3 is a perspective view of the entire appearance with the door opened.

FIG. 4 is a block diagram showing an electrical configuration.

FIG. 5 is a schematic vertical sectional side view when performing toast cooking.

FIG. 6 is a diagram corresponding to FIG. 5 when cooking in an oven.

FIG. 7 is a view corresponding to FIG. 5 in a state where the reflector is rotated to the reverse position.

[Explanation of symbols]

1 is a main body, 2 is a heating chamber, 2a is a ceiling part, 3 is a door, 9 is an upper heater (heater), 11 is a reflector, 14 is a pulse motor (driving means), 15 is a microcomputer, 16 is a door switch, Reference numeral 17 indicates a magnetron.

Claims (3)

[Claims] 1. A heater having a heater and a reflection plate for reflecting heat of the heater provided on a ceiling portion of a heating chamber, wherein the reflection plate is configured to be rotatable and driving means for rotating the reflection plate. A cooking device characterized by being provided with. 2. The reflecting plate is rotatable to an inversion position for covering the heater from the heating chamber side.
The cooker described. 3. The heating cooker according to claim 2, wherein the driving means rotates the reflecting plate to the reverse position when the door for opening and closing the heating chamber is opened.