JPS636778B2 - - 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 pivotally supported on the front surface 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 (4 bits) 5, a key switch 6 for inputting a heating program, that is, a cooking program, a cooking switch 7, and a power switch 8.
are provided sequentially 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 the cooking name, amount of food to be cooked, cooking time, and heating output, and a magnetic tape ₉₁ on which the contents of the cooking program are coded and recorded is placed in a predetermined position. It is set in. When the card 9 is inserted into the card insertion slot 4, the cooking program information recorded on the magnetic tape ₉₁ of the card 9 is read, and cooking is automatically performed based on the cooking program information. It's becoming like that. In this case, the cooking program can also be input by operating the key switch 6, but if the card 9 is used, even a beginner can easily carry out the desired cooking.

However, in such microwave ovens, it is difficult to store the large number of cards prepared for each type of cooking, and it is troublesome to find the card corresponding to the desired cooking among the cards. There was a problem with sexuality. Furthermore, if the card is bent or the magnetic tape is touched, the magnetic tape may be damaged, making it impossible to reliably input the cooking program corresponding to the desired cooking.

This invention was made in view of the above-mentioned circumstances, and its purpose is to enable anyone to easily and reliably perform the desired heating operation with extremely simple operations, and to also be able to easily and reliably perform various heating programs. The purpose of the present invention is to provide a high-frequency heating device that is highly reliable and practical and can reliably input data even at 100°C.

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. 2 to 5, a heating chamber, that is, a cooking chamber 10 is disposed in the main body 1 corresponding to the door 2, and within this cooking chamber 10 there is a shelf board 11 on which food to be cooked is placed. is provided. A high frequency generator, such as a magnetron 12, is provided on the back side of the ceiling of the cooking chamber 10, and an antenna ₁₂₁ of the magnetron 12 is led out into the cooking chamber 10. In this way, the high frequency waves emitted from the magnetron 12 are supplied into the cooking chamber 10, and the high frequency waves are agitated by the stirrer fan 13 provided on the ceiling surface of the cooking chamber 10.

Furthermore, in the operation panel 3, the digital display 5 is provided in the upper part, and this display 5
A rectangular display window 20 for displaying various cooking programs is formed below. Also,
Below the display window 20 on the operation panel 3,
An upward movement switch 21 for moving the band-like body 33 upward in the drawing and a downward movement switch 22 for moving the band-like body 33 downward in the figure are provided.

On the other hand, inside the operation panel 3, the display window 20 is
A roller 31 substantially corresponding to the upper edge side and a roller 32 substantially corresponding to the lower edge side of the display window 20 are provided, respectively. Furthermore, these rollers 31, 3
Both ends of a sufficiently long band-shaped body 33 having a constant width are wound around each of the two ends. Pulleys 34 and 35 are provided at one end of the rollers 31 and 32 facing each other, and these pulleys 3
A thread 36 is wrapped around 4 and 35. Further, at the other end of the roller 31, a rotor shaft 37 ₁ of the motor 37 is provided.
are connected. In this way, when the motor 37 rotates by turning on the upward movement switch 21 or the downward movement switch 22, the rollers 31 and 32 rotate in a predetermined direction, thereby causing the strip 33 to move against the display window 20. The figure can be moved up and down. In this case, a cooking program X such as a cooking name, amount of food to be cooked, cooking time, heating output, and a cooking picture is recorded on the strip 33, and the cooking name in the cooking program X is displayed on the left side of the illustration. A search symbol for the cooking program X, such as a search number Y, is recorded. Furthermore, on the right side of the cooking program X in the drawing of the strip 33, the contents of the cooking program A magnetic tape (recording medium) Z of a certain length, on which a search number Y and a search number Y are encoded and recorded, is provided along the moving direction of the band-shaped body 33. This magnetic tape Z is
This is a two-track system consisting of a first track _Z1 on the right side of the figure and a second track _Z2 on the left side of the figure, and the first track _Z1 and second track _Z2 contain the same information in opposite directions. recorded. That is, in the first track _Z1 , a search number information area _Z1a corresponding to the search number Y is formed on the upper side;
A cooking program information area Z ₁ b corresponding to the cooking program X is formed on the lower side. Further, in the second track _Z2 , a search number information area _Z2a corresponding to the search number Y is formed on the lower side, and a cooking program information area _Z2b corresponding to the cooking program Y is formed on the upper side. ing. And the strip 3
At positions corresponding to the magnetic tapes Z of No. 3, there are reading units, for example, magnetic heads 40 and 41, which are provided at intervals approximately corresponding to the length of the magnetic tapes Z along the moving direction of the strip 33. It is designed to make a sliding contact. The magnetic head 40 reads the contents of the second track _Z2 of the magnetic tape Z when the strip 33 moves downward. The magnetic head 41 reads the contents of the first track _Z1 of the magnetic tape Z when the strip 33 moves upward.

FIG. 6 shows the control circuit. 50 is an AC power supply,
At one end is the power switch 8, and a relay 5 to be described later.
5 normally open contact 55a ₁ and bidirectional thyristor 5
1 of the high voltage transformer 52 through the respective 1 in series.
One end of the primary winding 52 ₁ is connected to this primary winding 5
2 The other end of ₁ is a normally open contact 55 of a relay 55, which will be described later.
It is connected to the other end of the power supply 50 via _a2 . The anode and cathode of the magnetron 12 are connected to the secondary winding 52 ₂ of the transformer 52, and the heater of the magnetron 12 is connected to the secondary winding 52 ₃ of the transformer 52.
Furthermore, the anode of the magnetron 12 is grounded. In addition, the power switch 8 and the contact 55a ₁
A relay 5 is connected to the connection point through a normally open contact 54a that responds to the door switch 53, the cooking switch 7, and the main control section 60, which will be described later, in series.
One end of the relay 55 is connected to the other end of the relay 55, and the other end of the relay 55 is connected to the other end of the power source 50. The above relay 55
The normally open contact _55a3 of 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. This main control section 60 is configured to receive cooking program information via the key switch 6 or the magnetic heads 40, 41, and store the input cooking program information in a storage section (not shown), for example.
The cooking program information is stored in a RAM (random access memory), and the thyristor 51 and contact 54a are controlled based on the stored cooking program information. Furthermore, the control unit 60 causes the display 5 to display the progress of cooking based on the input cooking program, the search number set by the key switch 6, etc., and also causes the upward movement switch 21 or the downward movement switch 22 to be The motor 37 is rotated in a predetermined direction by operation. Note that in this case, the main control unit 60
The normally open contact _55a4 of the relay 55 is connected to. This contact _55a4 gives a cooking start command to the main control section 60 when it is closed.

Next, the operation in the above configuration will be explained. First, turn on the power switch 8. Then...
The main control section 60 is connected to the power source 50, and the contact 54a is closed in response to a command from the main control section 60. Then, using the key switch 6, the user sets the search number Y ``18'' for a desired dish such as ``hamburger'' in a cooking book or the like. Then, this set search number Y "18" is stored in the RAM (not shown) of the main control unit 60 and displayed on the display 5. In this way, if the search number Y of the cooking program X already displayed on the display window 20 is smaller than, for example, "18", the desired cooking program It is determined that the recording is on the strip 33 corresponding to the lower edge side, and the upward movement switch 21
Turn on. Then, the motor 37 rotates in a predetermined direction, and the strip 33 moves upward with respect to the display window 20. At this time, the magnetic head 41 is operated by turning on the upward movement switch 21, and the contents of the first track _Z1a of each magnetic tape Z on the strip 33 are sequentially read by the magnetic head 41. When the search number information read by the magnetic head 41 corresponds to the preset search number Y "18", the strip 33 continues to move upward for a certain distance and then stops. Thus, the area
The content of Z ₁ b, that is, the cooking program information, is read, and the read cooking program information is stored in the RAM (not shown) of the main control unit 60.
In this case, the various cooking program information that is sequentially read as the strip 33 moves is sequentially updated and stored in the RAM. Cooking program information is stored.

In this way, the door 2 is opened and the food to be cooked (hamburger steak) is placed on the shelf board 11 by the amount (200 g) of the cooking program X on the strip 33 displayed in the display window 20. Then, by closing the door 2, preparation for cooking is completed. However,
When the cooking switch 7 is turned on, the relay 55 is connected to the power source 20, and the connected state is maintained by closing the contact _55a3 of the relay 55. Further, due to the operation of the relay 55, the contacts 55a ₁ and 55a ₂ are closed, and the point 55a ₄ is closed. At this time, the main control unit 60 closes the contact _55a4 .
The contents of the RAM, that is, the cooking program information, are sequentially read out, and the conduction of the thyristor 51 is controlled based on the cooking program information (cooking time and heating output). In this way, 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 + 5 minutes) according to the cooking program information has elapsed, the contact 54a opens and the operation of the relay 55 stops.
The operation of the magnetron 12 is stopped by opening the contacts 55a ₁ and 55a ₂ accordingly. In other words, cooking is finished.

Therefore, various cooking programs
3, and the strip 33 is stored in the operation panel 3, and a search number is recorded for each type of cooking program, and the desired cooking program is selected using this search number. 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, it is clearly easier to operate and can speed up cooking. In particular, since the input of the cooking program is automatically completed when the cooking program is searched, anyone can easily and reliably perform desired cooking with extremely simple operations. Moreover, since the band-shaped body 33 cannot be touched, the magnetic tape Z is not scratched, and various cooking programs can be reliably inputted any number of times.

In the above embodiment, for example, if a large number of rollers are provided in the operation panel 3 and the belt-like body 33 is made to be endless by sequentially passing the belt-like body 33 around these rollers in a bent state,
The magnetic tape Z does not need to be of a two-track type, and the motor 37 only needs to be rotated in one direction. Further, if a certain blank area is provided on the strip 33, it is convenient because a new cooking program can be freely added to the blank area. Further, although the cooking program X and the search number Y are inputted magnetically via the magnetic tape Z, the same effect can be obtained by inputting them optically, for example. In addition, the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

As described above, according to the present invention, there is a display window, a heating program that is movably provided with respect to the display window, and displays information such as the amount of the object to be heated, heating time, heating output, etc., and a search for each heating program. a belt-shaped body on which symbols are sequentially recorded; a recording medium provided on the belt-shaped body at a position corresponding to each heating program and search symbol, and on which the corresponding heating program and search symbol are encoded and recorded;
reading means for reading the contents of each recording medium on the strip as the strip moves; and when a search symbol is set, moving the strip until the reading means reads search symbol information corresponding to the search symbol. means and
Means for updating and storing the heating program information read by the reading means and means for controlling the heating operation according to the stored contents are provided, so that the heating operation corresponding to the heating program displayed on the display window is performed. , provides a highly reliable and practical high-frequency heating device that allows anyone to perform the desired heating operation easily and reliably with extremely simple operations, and that allows various heating programs to be input reliably over and over again. can.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view showing an example of a conventional microwave oven and a cooking program card, and FIGS. 2 to 6 show an embodiment of the present invention.
The figure is a perspective view of the external appearance, Figure 3 is a configuration diagram schematically showing the inside of the cooking chamber, Figure 4 is a perspective view showing the configuration of the strip and its peripheral mechanism, and Figure 5 is a configuration diagram showing the storage area of the magnetic tape. , FIG. 6 is a block diagram of the control circuit. 10... Heating chamber (cooking chamber), 12... High frequency generator (magnetron), 20... Display window, 3
3... Strip-shaped body, 40, 41... Reading section (magnetic head), X... Heating program (cooking program),
Y...search symbol (search number), Z...magnetic tape.

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, there is provided a display window and a display window movably provided with respect to the display window. A strip in which heating programs such as the quantity of the heated object, heating time, heating output, etc. and search symbols for each heating program are sequentially recorded, and a strip on which each heating program and search symbol corresponds to each other. A recording medium provided with a corresponding heating program and a search symbol encoded and recorded thereon, a reading means for reading the contents of each recording medium on the strip as the strip moves, and a search symbol set. and means for moving the strip until the reading means reads the search symbol information corresponding thereto; means for updating and storing the heating program information read by the reading means; and means for controlling the heating operation according to the stored contents. A high-frequency heating device characterized in that it performs a heating operation corresponding to a heating program displayed on a display window. 2. The high frequency heating device according to claim 1, wherein the recording medium is a magnetic tape and the reading means is a magnetic head.