JPH0322038B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a two-tier high-frequency cooker that is provided with upper and lower cooking plates.

(Prior Art) The applicant of the present application has previously developed a cooking device of this type in which cooking plates can be housed in two levels, an upper side and a lower side, in a heating chamber inside the cooking device main body, and the cooking plates are guided to a magnetron. We have proposed a device in which the radio wave supply ports connected via a wave tube are opened in two stages, upper and lower, corresponding to the cooking dish, but in such a device, the magnetron is further added to its operation control circuit. It is also conceivable that the output can be freely switched between two stages, high output and low output, by means of an intervening output changeover switch.

(Problem to be Solved by the Invention) However, in such a device, the cooking plate is set to the upper level, for example, and the magnetron is correspondingly set to a low output by the changeover switch.
Next, when adding the cooking plate for two-stage cooking,
The magnetron must be correspondingly switched to high power, but this switching operation is easy to forget, so it is preferred that it be done automatically.

(Means for Solving the Problems) The purpose of the present invention is to obtain a cooking device that meets such requirements, and a heating chamber in the cooking device main body is provided with an upper side and a lower side of the cooking plate. It can be arranged in two stages (upper and lower) for storage, and a radio wave supply port connected to a magnetron or other high frequency generation source is opened on the side through a waveguide. The waveguide is arranged in upper and lower two stages corresponding to the two stages, and the waveguide is branched to form a branch waveguide connected to the supply port of each stage, and further, a branch part of the branch waveguide is arranged. in which the magnetron is provided with a damper that selectively closes one side and the other, and the magnetron can be switched between high output and low output by an output changeover switch, and the upper and lower sides are Upper and lower sensors are provided to detect placement of a cooking plate, and when both sensors detect placement of the cooking plate, the damper is alternately opened and closed on one side and the other of the branching waveguide; When only the sensor detects the placement of the cooking plate, the sensor detects the placement of the cooking plate and controls switching to open only one of the branch waveguides, and both sensors detect the placement of the cooking plate. When the position is detected, regardless of the switching position of the changeover switch,
This is achieved by putting the magnetron into a high output state.

(Example) Embodiments of the present invention will be described with reference to attached drawings.

Figures 1 to 3 show one example.
2 indicates the cooking device main body, and 2 indicates a heating chamber therein, in which the cooking plates 3 are placed in two stages, upper and lower, and accommodated so as to be freely accessible. Radio wave supply port 6 connected via pipe 5
The openings are made to correspond to the upper and lower two stages of the cooking plate 3, and are opened in the upper and lower two stages. In this case, the waveguide 5 is configured as a branched waveguide that branches into two parts, an upper side and a lower side, and a damper 7 is provided at the branched part, and the damper 7 serves as a driving source 9. The motor is interlocked with the link mechanism 16, and this is connected to the first
The position indicated by the chain line in the figure, that is, the position where the upper waveguide 5 is opened as shown in Figure 2a, and the position indicated by the solid line in Figure 1, that is, the position where the lower waveguide 5 is opened as shown in Figure 2b. The position of the damper 7 can be changed freely between the two positions, and when the above-mentioned cooking plate 3 is in only one upper stage, that is, when cooking in one stage, the damper 7
is set to the position indicated by the chain line, that is, the position shown in FIG.
High frequency cooking can be achieved only by
When the cooking plate 3 is arranged in two stages (upper and lower), that is, in the case of two-stage cooking, the damper 7 is periodically switched and tilted between the position indicated by the chain line and the position shown by the solid line. The high-frequency cooking was conducted by alternately distributing and guiding the liquid to two upper and lower stages. The means for providing such an operation to the damper 7 is, for example, as shown in the third figure, namely, a photo switch or other upper sensor 8a that detects the presence of the upper cooking plate 3 and closes it, and the presence of the lower cooking plate 3. A lower sensor 8b such as a photo switch that detects and closes the damper is prepared, and both sensors 8a and 8b are connected in series to the connection circuit between the damper's drive source 9 and its operating power source 10, and the drive source A positioning switch 11 that opens and closes in conjunction with the drive source 9 is provided in parallel with the lower sensor 8b, so that when the cooking dishes 3 are in the upper and lower two stages, both sensors 8a and 8b are closed, so that the drive source 9 is energized by the operating power supply 10 to obtain an alternate switching operation of the damper 7, but when the lower cooking plate 3 is then removed, the lower sensor 8b opens and the damper 7 switches to the second When the damper 7 reaches the position shown in FIG. Automatically stops at the indicated position.

In the case of the above-mentioned one-stage cooking, since the output of the magnetron 4 is concentrated and guided, a relatively small output is sufficient, and in the case of the above-mentioned multi-stage cooking,
The magnetron 4 requires a relatively large output because its output is distributed and guided, and thus the magnetron 4 is equipped with an output changeover switch 12 in its operation control circuit, as shown in FIG. 4, for example. 12, it is possible to freely switch between a low output state and a high output state. In this device, the magnetron 4 is made to have a high output state regardless of the switching position of the changeover switch 12 during the above-mentioned two-stage cooking. A separate output changeover switch 13 is prepared in parallel with the above-mentioned changeover switch 12, and this switch can be switched to the high output side in response to the energized relay 14 when the two sensors 8a and 8b are closed. I made it. Thus, the changeover switch 12
Even though the magnetron 4 is on the low output side, the magnetron 4 is brought into a high output state by the changeover switch 13, so that no inconvenience occurs.

FIG. 5 shows a modification thereof, in which the changeover switch 12 is of a type that is controlled to open and close intermittently by a timer 15.

The damper 7 described above is not limited to the plate-like member shown in the first figure, but may be a cylindrical member having an opening 7a on the side surface as shown in the sixth figure, for example.

(Function) The operation will be explained using, for example, those shown in FIGS. 1 to 3.
During multi-stage cooking, the magnetron 4 can be freely set to a low output state or a high output state using the changeover switch 12 as required, but from this state, a cooking plate 3 is then added to the lower side for two-stage cooking. , regardless of the switching position of the switch 12, the switch 13 parallel to it is closed, thus the magnetron 4
automatically obtains a high output state.

(Effect of the invention) According to the present invention, when the cooking plate is placed only on one side, the high frequency can be concentrated on only the side where the cooking plate is placed, and the high frequency Not only is there no unnecessary radiation, but when cooking with cooking plates placed on top and bottom,
Magnetrons automatically provide high output regardless of the position of the output switch, which eliminates cooking failures caused by forgetting to turn the switch, and its construction is relatively simple and inexpensive. It has the effect of

[Brief explanation of the drawing]

Fig. 1 is a cutaway side view of one example of cooking according to the present invention;
The figure shows the switching state of the damper, Figure 3 is a control circuit diagram of the damper, Figure 4 is a control circuit diagram of the magnetron, Figure 5 is a circuit diagram of a modification thereof, and Figure 6 is a modification of the damper. FIG. 3 is an example cross-sectional view. 1... Cooking device body, 2... Heating chamber, 3... Cooking plate, 4... Magnetron, 5... Waveguide, 6...
Radio wave supply port, 7... Damper, 8a, 8b... Sensor, 12... Output changeover switch, 13... Separate output changeover switch.

Claims (1)

[Claims] 1. Cooking plates are arranged in two levels (upper and lower) in the heating chamber of the cooking device so that they can be accommodated freely, and radio waves connected to a magnetron or other high-frequency generation source via a waveguide are attached to the side of the heating chamber. A device that opens a supply port, and the supply port is connected to the top and bottom of the cooking plate.
The waveguide is arranged in upper and lower stages corresponding to the stages, and the waveguide is branched to form a branch waveguide connected to the supply port of each stage. Each of the upper and lower cooking plates is provided with a damper that selectively closes one side and the other side, and in which the magnetron can be switched between two stages of high output and low output using an output changeover switch. upper and lower sensors are provided to detect the placement of the cooking plate, and when both sensors detect the placement of the cooking plate, the damper is alternately opened and closed on one side of the branching waveguide and the other; When only one of the branch waveguides detects the placement of the cooking plate, it detects the placement of the cooking plate and controls switching to open only one of the branch waveguides, and both sensors detect the placement of the cooking plate. A high-frequency cooker that, when detected, puts the magnetron into a high output state regardless of the switching position of the changeover switch.