JP3281846B2 - Heating equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating chamber for heating an object to be heated, high-frequency heating means for heating the object to be heated at a high frequency, electric heating means for electrically heating the object to be heated,
And a variable means for changing the position of the electrothermal heating means in the heating chamber.

[0002]

2. Description of the Related Art In a conventional heater-equipped cooker (heating device) capable of high-frequency heating and electric heating, the position of a heater can be changed in order to increase the heating efficiency of the heater. That is, in the case of oven cooking or the like, the heater in the heating chamber is located at the upper portion of the heating chamber or at the side of the heating chamber, and performs cooking by setting the entire heating chamber to a high temperature. On the other hand, in the case of grill cooking or toast cooking, the heater is brought close to the object to be heated so that the object to be heated is colored in a short time.

[0003] The heater may be moved manually or automatically moved in accordance with the cooking method.

On the other hand, as a technique for improving efficiency during high-frequency heating, the matching state of the impedance between the heating chamber including the object to be heated and the high-frequency generator is changed according to the state of the object to be heated. Then, there is a method of optimizing and heating. An example of this method is disclosed in
A heating cooker disclosed in Japanese Patent No. 5376 is raised.

FIG. 4 is a diagram showing the structure of the cooking device.

In the figure, 1 is a heating chamber, 2 is a heater, 3
Is a high frequency generator, 4 is a variable means for varying the height of the heater 2, 5 is a rotary mounting table on which the object 6 is mounted, 7
Is a rotating device, 8 is a height detecting device for detecting the height of the rotary mounting table 5, 9 is a control unit, 10 is input means, and 12 is an in-waveguide matching means.

[0007]

However, in the heating cooker disclosed in Japanese Patent Application Laid-Open No. 6-275376, a separate matching means 12 is required in order to optimize the impedance matching state. In addition, there are problems such as an increase in the number of movable parts, an increase in cost and a decrease in reliability.

The present invention has been made in view of the above problems, and has as its object to provide a heating apparatus capable of optimizing an impedance matching state without separately providing a matching means.

[0009]

In order to achieve the above object, a heating apparatus according to a first aspect of the present invention includes a heating chamber for heating an object to be heated, and a high frequency heating means for high frequency heating the object to be heated. And heating means for electrically heating the object to be heated, and a variable means for varying the position of the electric heating means in the heating chamber, wherein the high-frequency heating means heats the object to be heated by the high-frequency heating means. Sometimes heating information
To optimize the heating efficiency of high-frequency heating based on the
The electric heating means is arranged at a position where the
And a control means for controlling the variable means .

According to a second aspect of the present invention, in the heating apparatus according to the first aspect, the control means detects a weight, a height, a heating progress state, and the like of the object to be heated. The variable means is controlled based on the detection result of the determination means.

Further, in the heating apparatus according to a third aspect of the present invention, in the heating apparatus according to the first aspect, the control means inputs the kind, weight, heating output, heating time, etc. of the object to be heated. The variable means is controlled based on input information from the means.

According to a fourth aspect of the present invention, there is provided a heating apparatus according to the first aspect, wherein the control means detects an impedance matching state in the heating chamber during high-frequency heating. The variable means is controlled based on the detection result of the above.

According to the above arrangement, the heating device of the present invention comprises:
At the time of high-frequency heating of the object to be heated by the high-frequency heating means, a control means for controlling the variable means and arranging the position of the electric heating means at an optimum position is provided, so that the electric heating means and the variable means are used as impedance matching means. Thus, the heating efficiency at the time of high-frequency heating can be improved.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a heating device (heating cooker) according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a configuration diagram of a heating cooker according to a first embodiment of the present invention. The heating cooker according to the present embodiment includes a heating chamber 1, and a rotary mounting table 5 on which an object to be heated 6 is mounted is installed in the heating chamber 1, and the rotary mounting table 5 has a weight. It is driven by a rotating device 7 having a built-in detection device. A height detecting means 8 for detecting the height of the object 6 to be heated is provided on the side surface of the heating chamber 1.

An electric heating heater (hereinafter simply referred to as "heater") 2 which is an electric heating means installed in the heating chamber 1 can be moved up and down in the height direction by a variable means 4 (variable). ). 2a shows a state where the heater 2 is moved downward.

A high-frequency generator (high-frequency generating means) 3 is provided for high-frequency heating. When the heating information is input from the input unit 10, the control unit 9 as the control unit drives the heater 2 and the high-frequency generator 3 to perform the electric heating or the high-frequency heating based on the input information.

More specifically, during oven heating, which is electric heating, the heater 2 is moved to the top of the heating chamber to perform heating. In addition, when the grill or the toast is heated by electric heating, the heater 2 is lowered to a preset position to perform heating.
In this case, the lowered position of the heater 2 may be determined based on information obtained by the height detecting means 8.

Thus, the electric heating can be performed by setting the heater position so that the heating efficiency and the finished state during the electric heating are optimized for each heating state.

Next, at the time of high-frequency heating, the heater position is moved to a preset position based on the weight and height information of the object to be heated 6 so as to match the impedance between the object to be heated 6 and the high-frequency generator 3. High-frequency heating is performed so that the state and the finished state are optimized. That is, the object to be heated 6
By moving the heater 2 to a position where the impedance matching state between the object and the high-frequency generator 3 is optimized, the finished state of the object 6 to be heated is optimized.

It is effective to change the position of the heater with the progress of heating. That is, by changing the heater position based on information from a heating progress detection means (not shown) such as a humidity sensor, the impedance matching state differs between when the object to be heated is thawed and when it is heated, as in the case of thawing cooking. The finished state can be set optimally.

FIG. 2 is a configuration diagram of a heating cooker according to a second embodiment of the present invention.

The heating cooker according to the present embodiment includes a heating chamber 1, and a rotary mounting table 5 on which an object to be heated 6 is mounted is installed in the heating chamber 1, and the rotary mounting table 5 rotates. Device 7a
Driven by The rotation device 7a has a configuration in which a weight detection device is not built.

The heater 2 installed in the heating chamber 1 includes:
As in the above-described embodiment, the position can be changed by the height changing means 4. Also, a high frequency generator 3 for high frequency heating
Is installed. When the heating information is input from the input unit 10, the control unit 9 drives the heater 2 and the high-frequency generator 3 to perform electric heating or high-frequency heating based on the input information.

More specifically, during oven heating, which is electric heating, the heater 2 is moved to the top of the heating chamber 1 to perform heating. Further, during grill or toast heating which is electric heating, the heater 2 is lowered to a preset position to perform heating. This makes it possible to perform the electric heating by setting the heater position so that the heating efficiency and the finished state at the time of the electric heating are optimized for each heating state.

Also, at the time of high-frequency heating, input information is
The heater 2 is set to a preset heater position based on the type information of the object to be heated 6 such as thawing, reheating of the drink, preparation of vegetables, and the like, as well as superposition and number information.

Alternatively, the type of the object 6 to be heated is determined based on output information such as high output (heating) and low output (thaw, stew), and the heating time is within 2 minutes (small), 5 minutes or more (large), and the like. By the determination, the heater 2 is set to a preset heater position.

By setting these heater positions, high-frequency heating is performed so that the impedance matching state and the finished state are optimized.

FIG. 3 is a configuration diagram of a heating cooker according to a third embodiment of the present invention.

The heating cooker according to the present embodiment includes a heating chamber 1, and a rotary mounting table 5 on which an object to be heated 6 is mounted is installed in the heating chamber 1, and the rotary mounting table 5 rotates. Device 7a
Driven by

The heater 2 installed in the heating chamber 1 includes:
As in the above-described embodiment, the position can be changed by the height changing means 4. A high-frequency generator 3 is provided for high-frequency heating. Then, when the heating information is input from the input unit 10, the control unit 9 drives the heater 2 and the high-frequency generator 3 to perform the electric heating or the high-frequency heating based on the input information.

More specifically, during oven heating as electric heating, the heater 2 is moved to the top of the heating chamber 1 to perform heating. In addition, when the grill or the toast is heated by electric heating, the heater 2 is lowered to a preset position to perform heating.

Thus, the heating position can be set so that the heating efficiency and the finished state at the time of electric heating are optimized for each heating state, and the electric heating can be performed.

During high-frequency heating, the state of the object to be heated 6 is determined based on the output of the electric field detecting means 11 for a predetermined time (for example, one rotation time of the rotary mounting table 5). The heater position is moved to a preset position based on the output, and the high-frequency heating is performed such that the impedance matching state and the finished state between the object 6 and the high-frequency generator 3 are optimized.

It is effective that the position of the heater is changed with the change of the output of the electric field detecting means 11 as the heating progresses. That is, by changing the heater position during heating based on the information of the electric field detecting means 11, the matching state and the finished state of different impedances when the object 6 is thawed and when it is heated, such as during thawing cooking, are optimally set. It is possible to

The heating cooker according to the above-described embodiment is not limited to this, and the heater position is set by a combination of one or more kinds of input information and one or more kinds of various detecting means.
Of course, it is also effective to perform high-frequency heating so that the impedance matching state and the finished state are optimized.

[0037]

As described above, according to the heating apparatus of the present invention, the heating efficiency of the high-frequency heating based on the heating information when the high-frequency heating means heats the object to be heated.
At the position where the impedance becomes as optimal as possible
Since the control means for controlling the variable means so as to dispose the heating means is provided, the heating efficiency at the time of high frequency heating can be improved by using the electric heating means and the variable means as impedance matching means.

Therefore, the conventional matching device in the waveguide becomes unnecessary, and the cost can be reduced, and the reliability can be improved by reducing the number of parts.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a heating device according to a first embodiment of the present invention.

FIG. 2 is a configuration diagram of a heating device according to a second embodiment of the present invention.

FIG. 3 is a configuration diagram of a heating device according to a third embodiment of the present invention.

FIG. 4 is a configuration diagram of a conventional heating device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heating room 2 Heater for electric heating 3 High frequency generator 4 Height variable means 5 Rotary mounting table 6 Heated object 7, 7a Rotating device 8 Height detecting device 9 Control part 10 Input means 11 Electric field detecting means

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F24C 7/02 531 F24C 7/02 350 H05B 11/00

Claims (4)

(57) [Claims] 1. A heating chamber for heating an object to be heated, a high-frequency heating means for heating the object to be heated at a high frequency, an electric heating means for electrically heating the object to be heated, and an electric heating means in the heating chamber. A heating unit having a variable means for changing a position, wherein, when the high-frequency heating means performs high-frequency heating of the object to be heated, the heating efficiency of high-frequency heating is optimized based on heating information.
Place the electrothermal heating means at a position where impedance is
A heating device, further comprising control means for controlling the variable means so as to be arranged . 2. The method according to claim 1, wherein the control unit is configured to control a weight of the object to be heated,
2. The heating apparatus according to claim 1, wherein said variable means is controlled based on a detection result of a state determination means for detecting a height, a progress state of heating, and the like. 3. The control means includes:
2. The heating apparatus according to claim 1, wherein said variable means is controlled based on input information from input means for inputting weight, heating output, heating time and the like. 4. The control device according to claim 1, wherein the control unit controls the variable unit based on a detection result of an electric field detection unit that detects a matching state of impedance in the heating chamber during high-frequency heating. A heating device as described.