JPS59217421A - Heat cooking device - Google Patents

Abstract

PURPOSE:To uniform the burnt condition of food by a method wherein an illuminating device and a receptor are attached swingably and a heat reflecting plate, pivoting about a heater in accordance with cooking condition, is provided near the heater in the heat cooking device equipped with a cooking condition detecting photosensor. CONSTITUTION:The receptor 6 is swung during cooking of a food 9 to detect the burnt condition of the whole surface of the food 9 and the heat reflecting plate 10 is pivoted so as to concentrate the heat of the heater 7 at a position where the degree of burnt condition is lowest during one turn of the receptor 6. The heater 7 is stopped when the average value of the maximum and minimum values of the detected values of burnt condition which are detected by one turn of the receptor 6 has arrived at a reference value. According to such constitution, the food may be cooked so that the whole thereof is cooked with uniform burnt condition.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a heating cooking device, and particularly to a heating cooking device having an optical sensor for detecting the degree of cooking of food.

[Technical background of the invention]

FIG. 1 shows a conventional heating cooking device. Near the center of the upper plate 3 of the open 2 disposed inside the main body I, there is a
Two through holes 4a and 4b are bored.

On the other hand, a light emitting device 5 such as a light bulb is placed on the top side of the through hole 4a.
However, a light receiver 6 is disposed on the upper surface side of the other through hole 4b. Furthermore, a heater 7 is provided above the inside of the open 2.

In the above-mentioned electrical manufacturing, light is irradiated from the light emitter 5 to the W4 embedded food 9 on the top plate 8, and the reflected light is received by the light receiver 6. The heater 7 is configured to stop when the maximum value of the output signal emitted from the light receiver 6 according to the intensity of the reflected light reaches a certain reference value. controlled.

[Problems with background technology]

In the case of the above-mentioned device, since the light emitter 5 and the light receiver 6 are fixed, the degree of charring in part A in Fig. 1 is locally detected, and the degree of cooking in other parts can be detected. As a result, over-burning or under-burning tends to occur (which has the disadvantage that the whole food cannot be cooked evenly).

[Purpose of the invention]

The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a heating cooking device that can detect the degree of burntness of the entire food and can eliminate uneven burntness of the food. .

[Summary of the invention]

In order to achieve the above object, the heating cooking device of the present invention is a heating cooking device capable of detecting the cooking condition of food using an optical sensor having a light emitting device and a light receiving device provided near the top plate of the oven. One of the light receivers is swingable, and a heat reflecting plate is provided near the heater and rotates depending on the cooking condition, centered around the central axis of the heater.

[Embodiments of the invention]

1 Hereinafter, embodiments of the present invention will be described with reference to FIGS. 2 to 8.
The explanation will be made with reference to the drawings, and the same parts as in FIG. 1 will be given the same reference numerals and the explanation thereof will be omitted.

FIG. 2 shows an embodiment of the present invention, in which the emitter 5 is fixed, but the receiver 6 is swingable, and furthermore,
In the vicinity of the heater 7, curved heat reflecting plates 10, 10 are provided so as to be rotatable about the central axis of the heater 7. Figure 3a.

b shows the rocking mechanism of the light receiver 6,
One end of an arm 12 that is swingably provided around a fulcrum 11 is connected to the upper surface of the light receiver 6), and a shaft 14 of a motor 13 is connected to the side of the other end of the arm J2.
A cam 15 connected to the cam 15 is brought into contact with the cam 15 .

Further, a spring 16 is connected between the fulcrum 11 of the arm 12 and the light receiver 6, and biases the arm 12 and the cam 15 so that they are not separated from each other. As the motor 130 rotates, the cam 15 rotates, causing the arm 12 to swing.

Further, FIGS. 4 and 5 show the rotation mechanism of the heat reflector 100, and a gear 17 is provided at one end of the heat reflector 1o.
is fixed, and the rotation axis of this gear F and the central axis of the heater 7 are arranged on the same line.

Further, a gear connected to the shaft 19 of the motor octopus 8 is arranged to mesh with the gear 17, and the heat reflecting plate 10 rotates via the gears 17 and 20 as the motor 18 rotates. It is.

In this embodiment, while the food 9 is being cooked, the light receiver 6 is swung to detect the degree of burnt on the surface of the food 90. When the light receiver 6 is swung once, the most The heat reflecting plate 10 is rotated so that the heat of the heater 7 is reflected to the position where the degree of burntness is detected to be low. Therefore, the insufficiently charred portions of the food 9 can be locally heated, and the degree of charring can be made uniform.

In addition, in the case of this embodiment, the value detected by one swing of the light receiver 6, that is, the light receiver 6 detects the reflected light of the light irradiated from the light emitter 5, and The heater 7 is controlled to stop when the average of the maximum and minimum values of the corresponding output signal reaches a certain reference value.

Therefore, compared to the conventional method in which the heater is stopped when the maximum value of the output signal value reaches the reference value, it is possible to significantly improve the unevenness of burntness.

The case where the above-mentioned control is performed is shown in FIG.

In this way, the control section operates the light emitter and drives the swinging motor of the light receiver, and the light receiver detects the reflected light from the food and sends an output signal to the control section.

The control section detects the output signal and the swinging position of the light receiver to control the rotation motor of the heat reflection plate or the switch of the heater. The heat reflecting plate is configured to rotate back and forth within a certain range, and this reciprocating rotation is performed, for example, by reversing the rotation motor. In addition, the above control can be used to detect objects such as metals that make up the oven (those with extremely high light reflectance) and black enamel used for the top plate (those with extremely low light reflectance). This is done by controlling the control section so that only the reflected light from the food is detected.

Further, FIGS. 7a and 7b and FIG. 8 show other embodiments of the present invention, in which the rocking mechanism of the light receiver 6 and the heat reflecting plate 1 are shown.
0 rotation mechanism is integrally constructed. That is, the shaft 14 of the motor 3 shown in FIGS.
1 is fixed. And... this bevel gear 21
A heat reflecting plate 10 is fixed to a bevel gear n that meshes at right angles to the gear n, and the other parts are the same as those in FIGS. 3 to 5. In this case, the position where the light receiver 6 points and the heat reflection position of the heat reflection plate 10 are made to coincide.

In this embodiment, the motor 3 is operated and the light receiver 6 is
The heat reflecting plate 10 is rotated at the same time. Then, the motor 3 is controlled to be stopped for a certain period of time at a position where the degree of burntness of the food detected by the light receiver 6 is least. Therefore, the heat reflection plate 10 reflects the heat to a position where the burntness is low, and the lack of burntness can be resolved as in the first embodiment.

In the above-mentioned embodiment, the case where the light receiver is swung by 1 degree has been described, but it is of course possible to obtain similar functions and effects even if the light emitter is swung.

〔Effect of the invention〕

As described above, the heating cooking device according to the present invention includes:
.

At least one of the light emitter and the light receiver of the optical sensor is swingable, and a heat reflecting plate that rotates around the central axis of the heater is provided near the heater.
It is possible to detect the degree of burntness throughout the food.
Cooking can be done evenly without any lumps such as over-burning or under-burning. Further, by providing a heat reflecting plate, the radiant heat of the heater can be concentrated in the direction of the food, which is particularly effective in eliminating undercooking.

[Brief explanation of the drawing]

81 is a longitudinal sectional view showing a conventional heating cooking device, FIG. 2 is a longitudinal sectional view showing an embodiment of the present invention, and FIGS. Figures 4 and 5
The figures are a front view and a perspective view, respectively, showing an example of a rotation mechanism of a heat reflecting plate, FIG. 6 is an explanatory view showing a control means of the present invention, and FIG.
Figures a and b are front views showing an example in which the rocking mechanism of the light receiver and the rotating mechanism of the heat reflector are integrated, respectively, and Figure 8 is an enlarged front view of the heat reflector part of Figure 7. be. 1...Body, 2...Open, 3...Top plate, 4...
...Through hole, 5... Emitter, 6... Light receiver, 7...
Heater, 8...Top plate, 9...Food, 10...
Heat reflecting plate, 11...Fully point, 12...Arm, 13
, 18...Motor, 14, 19...Shaft, 1
5...Cam, 16...Spring, 17 + 20
...Both stations 21.22...Bevel gears. Applicant's agent Kiyoshi Inomata Figure 1 (G) 1'21 Figure 4 Figure 2 Figure 3 (b)

Claims (1)

[Claims] In a heating cooking apparatus capable of detecting the extent to which food is filled with a light sensor having a light emitter and a light receiver provided near an open upper plate, one of the light emitter and the light receiver is shaken. 1. A heating cooking device characterized in that a heat reflecting plate is provided near a heater and rotates around the central axis of the heater according to the cooking condition.