JPS6038617B2 - High frequency heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high-frequency heating device that automatically performs a heating operation based on an input heating program.

Conventionally, there is a high-frequency heating device of this type, such as a microwave oven, as shown in FIG.

That is, 1 is a main body, and a door 2 is supported on the front side of the main body 1, and an operation panel 3 is provided.
This operation panel 3 includes a card insertion slot 4, a digital display section (4 bits) 5, a key switch 6 for inputting a heating program, that is, a cooking program, and a cooking switch 7.
, and a power switch 8 are sequentially provided from the upper part to the lower part. Thus, a program card 9 can be inserted into the card insertion slot 4.
This card 9 records a cooking program such as cooking name, amount of food to be cooked, cooking time and heating output, and a magnetic tape 9 on which the content of the cooking program is coded and recorded is attached to a predetermined location. It is provided.
When the card 9 is inserted into the card insertion slot 4, the content of the magnetic tape 9 on the card 9, that is, the cooking program information, is captured, and cooking is automatically performed using the cooking program information. It has become. In this case, the cooking program can also be input by operating the key switch 6, but by using the card 9, even beginners can easily carry out desired cooking. However, in such microwave ovens, it is difficult to store the cards prepared for each type of cooking,
There were problems in terms of operability, such as finding a card corresponding to a desired cooking from among the cards, which was troublesome.

Furthermore, if the card is bent or the magnetic tape is touched, the magnetic tape may be damaged, making it impossible to reliably input a cooking program corresponding to the desired cooking. This invention was made in view of the above-mentioned circumstances, and its purpose is to improve operability, and to provide reliability that allows various heating programs to be input reliably any number of times. The present invention also provides a highly practical high-frequency heating device.

An embodiment of the present invention will be described below with reference to the drawings.

In this case, the same parts as in FIG. 1 are given the same reference numerals, and detailed explanation thereof will be omitted. In FIGS. 2, 3, and 4, a heating chamber or cooking chamber 10 is disposed in the main body 1 corresponding to the door 2, and a heating chamber or cooking chamber 10 is provided in the cooking chamber 10 for placing food to be cooked. A shelf board 11 is provided. and,
A high frequency generator such as a magnetron 12 is provided on the back side of the ceiling of the cooking chamber 4, and an antenna 12 of the magnetron 12 is led out into the cooking chamber 4. In this way, the high frequency waves emitted from the magnetron 12 are supplied into the cooking chamber 4, and the high frequency waves are scattered by the star fan 13 provided on the ceiling surface of the cooking chamber 4. Furthermore, a rectangular display window 20 for displaying various cooking programs is formed in the upper part of the operation panel 3, and above the display window 20 there is a slide knob that can be slid in the horizontal direction in the figure. 21 are provided. Further, a slide knob 22 is provided adjacent to the display window 20 and is slidable in the vertical direction in the drawing.
A digital display section (4 bits) 23 is provided below the display window 20 for displaying the contents of the cooking program, such as cooking time and heating output. On the other hand, a rotating body such as a drum 30 is rotatably provided within the operation panel 3.

The circumferential surface of this drum 30 corresponds to the two display windows. On the circumferential surface of the drum 30, various cooking programs are sequentially written and provided on a display pattern and a program recording medium such as a magnetic tape. That is, X, , X2, and X3 are display patterns, each consisting of a cooking name, amount of food to be cooked, cooking time, and heating output, and are sequentially written along the rut direction of the drum 30.Y, , Y2 and Y3 are magnetic tapes of a certain length on which the cooking time and heating output, which are the contents of the cooking program, are coded and recorded, and are provided corresponding to the cooking names of the display patterns X, X2, and X3, respectively. A pinion 31 is connected to the shaft of the drum 30 at the center of the upper surface of the drum 30, and a rack 32 is engaged with the pinion 31. Furthermore, a lever 33 is attached to the rack 32. One end of this lever 33 is connected to the knob 21 on the front side of the operation panel 3, and the other end is supported within the operation panel 3. , slide the knob 21 to the right in the figure, and then the bar 33 and the rack 32
The drum 30 is rotated by a certain angle in the direction of arrow A via the pinion 31. And knob 2
1 to the left in the figure, the drum 30 rotates in the direction opposite to the direction of arrow A and returns to its original position. In this case, when the knob 21 is slid to the left in the figure as far as it will go, the various display patterns X, X2, X3 on the drum 30 are displayed on the display window 20
It is designed to correspond to Furthermore, magnetic tapes Y,, Y2, Y3 are placed at positions at regular intervals from the circumferential surface of the drum 30 when the various display patterns X,, X2, X3 on the drum 30 correspond to the display windows 201. A slide frame 34 corresponding to one end of each is provided along the axial direction of the drum 30. The slide frame 34 is provided with a magnetic head 35 that is slidable in the vertical direction in the drawing while coming into contact with the circumferential surface of the drum 30 . It is connected to the knob 22 on the side. therefore,
Depending on the sliding position of the knob 22, the magnetic head 35 comes into contact with the magnetic tapes Y, Y2, Y3 on the drum 30, respectively. FIG. 5 shows the control circuit.

One end of the primary winding 52 of the high-voltage transformer is connected to the power switch 8, a normally open contact 55a of a relay 55 (to be described later), and a bidirectional syristor 51 in series. An end of the primary winding 52 is connected to the other end of the power source 50 via a normally open contact 55a2 of a relay 55, which will be described later.

The secondary winding 522 of the transformer 52 is connected between the anode and the cathode of the magnetron 12, and the heater of the magnetron 12 is connected to the secondary winding 522 of the transformer 52.
It is connected to the next winding 523. Furthermore, the anode of the magnetron 12 is grounded. Further, a door switch 5 is connected to the connection point between the power switch 8 and the bush point 56a.
3. The cooking switch 7 and the main control section 60' which will be described later.
One end of a relay 5 . A normally open contact 55a3 of the IJ relay 55 is connected in parallel to the cooking switch 7. On the other hand, a main control section 60 is connected to the power source 50 via the power switch 8 described above.

Cooking program information is input to the main control unit 6, the key switch 6, or the magnetic head 40', and the input cooking program information is stored in a storage unit (not shown), such as a RAM (random memory). The thyristor 51 and the contact 54 are stored in the thyristor 51 and the contact 54 based on the stored cooking program information.
This is to control a. Further, the cooking time and heating output of the cooking program information stored in the RAM are displayed on the digital display section 23 as the cooking progresses. In this case, the normally open contact 55a4 of the superposition relay 55 is connected to the control unit 601. When this contact 55a4 is closed, the main control unit 6
0' gives a cooking start command. Next, the operation in the above configuration will be explained.

First, turn on the power switch 8. Then, the main control unit 6
The contact 54a is closed by the command from 0. moreover,
Among the cooking names of various display patterns X, , X2, and X3 on the drum 30 displayed on the display window 20, the knob 22 is made to correspond to a desired cooking, for example, "roast chicken." When the knob 21 is slid to the right in the figure, the drum 30 rotates in the direction of the arrow A in the figure, and the cooking program information corresponding to "roast chicken" recorded on the magnetic tape Y2 on the drum 30 is read. It is read by a magnetic head 35. Then, this captured cooking program information is stored in a RAM (not shown) in the main control section 6. When the input of the cooking program is completed in this way, slide the knob 21 to the left in the figure to rotate the drum 30 to its original position, and display various display patterns X, X2, X3 on the drum 30. Make it compatible with Windows 20. Then, the door 2 is opened and the food to be cooked (chicken) is placed on the shelf board 5 in the amount of the display pattern X2 (500 pieces/1 bird) displayed on the display window 201.

Then, by opening the door 2, preparation for cooking is completed. When the cooking switch 7 is turned on, the relay 55 operates, and the operating state of the relay 55 is indicated by the contact 55.
It is self-maintained by the closure of a3. Furthermore, relay 5
5 closes the contacts 55a, 55a2 and closes the contact 55a4. At this time, the main control unit 60 sequentially outputs the contents of the RAM, that is, the cooking program information, by opening the contact 55a4, and controls the conduction of the thyristor 51 based on the cooking program information (cooking time and heating output). In this way, magnetron 1
The magnetron 12 operates at a predetermined oscillation output (600W→200W), and cooking is performed using the high frequency waves emitted from the magnetron 12. After that, when the cooking time (3 minutes + 10 minutes) corresponding to the heating chamber information has elapsed, the contact 54a opens. In other words, when the relay 55 stops operating, the contact 5
5a, , 55a2, the operation of the magnetron 12 is stopped and cooking ends. Therefore, the various display patterns X, , X2, and X3 are sequentially recorded on the drum 30, and the drum 30 is housed in the operation panel 3, and selections for the various display patterns X,, X2, and X3 are made by sliding the knobs 22. Since it is made to correspond to the position, it is clearly superior in operability compared to the conventional method where you have to worry about where to store the cards or search for the desired card from among the cards.

Further, since the drum 30 is not touched, the magnetic tape Y is not scratched, and various cooking programs can thus be reliably input any number of times. In the above embodiment, only three types of cooking programs can be recorded because the drum 30 can only be rotated by a certain angle, but if the rotation angle of the drum 30 is increased, several more types of cooking programs can be recorded. can be recorded.

Further, if a blank area for recording a new cooking program is secured on the drum 30, it will be very convenient. Furthermore, the driving force of a motor, the deflection force of a spring, or the like may be used to rotate the drum 30. Furthermore, although a magnetic tape is used as the program recording medium and the cooking program is discussed magnetically, the present invention is not limited thereto, and for example, optical reading may be used. others,
It goes without saying that this invention is not limited to the above embodiments, and that various modifications can be made without departing from the gist of the invention. As described above, according to the present invention, a rotating body in which various heating programs each including a display pattern and a program recording medium as one unit are sequentially described and provided is provided to the display window, and the rotating body is heated in various ways. A reading section is provided to read the contents of the program recording medium corresponding to the display pattern displayed on the display window among the programs, and the heating operation is performed based on the desired heating program read by the reading section. Therefore, it is possible to provide a highly reliable and practical high-frequency heating device that can improve operability and allow various heating programs to be reliably input any number of times.

[Brief explanation of drawings]

FIG. 1 is an external perspective view showing an example of a conventional microwave oven, and FIGS. 2 to 5 show an embodiment of the present invention.
Fig. 2 is an external perspective view, Fig. 3 is a schematic configuration diagram showing the inside of the cooking chamber, Fig. 4 is a perspective view showing the drum and its surrounding mechanisms,
FIG. 5 is a configuration diagram of the control circuit. 10... Heating chamber (cooking chamber), 12... High frequency generator (magnetron), 20... Display window, 30...
Rotating body (drum), 35... Kendori part (magnetic head),
X,,X2,X3...Display pattern, Y,,Y2,
Y3...fu. . gram recording medium (magnetic tape). Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. In a high-frequency heating device that heats an object by supplying high-frequency waves emitted from a high-frequency generator into a heating chamber, a display window, a display pattern, a heating time, and a heating time are provided for the display window. a rotary body in which various heating programs are sequentially written and provided with a program recording medium in which the output is encoded and recorded;
a reading section for reading the contents of the program recording medium corresponding to the display pattern displayed in the display window among the display patterns of various heating programs on the rotating body, and the heating program read by the reading section. A high-frequency heating device characterized in that a heating operation is performed based on.