JPS6038618B2 - 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 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 section (4 bits) 5, a key switch 6 for inputting a heating program, that is, a cooking program, a cooking switch 7,
and power switches 8 are sequentially provided from the upper part to the lower part. However, in the card insertion slot 4,
A program card 9 can be inserted. This card 9 records a cooking program such as cooking name, amount of food to be cooked, cooking time, heating output, etc., and a magnetic tape 9 on which the content of the cooking program is coded and recorded is placed at a predetermined location. It is set in.
When the card 9 is inserted into the insertion slot 4, the cooking program information recorded on the magnetic tape 9 of the card 9 is read, 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 if the card 9 is used, even a beginner can easily carry out desired cooking. However, in such microwave ovens, there are problems in terms of operability, such as the difficulty in storing the cards prepared for each type of cooking, and the trouble of finding the card corresponding to the desired cooking among the cards. There was a problem.

Additionally, the card may be bent or the magnetic chip may be damaged, making it impossible to reliably input a 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 also to be able to reliably input various heating programs any number of times. The present invention provides a high frequency generator with excellent reliability and practicality.

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, that is, a cooking chamber 10 is provided in the main body 1 corresponding to the door 2, and within this cooking chamber 10 there are shelves for storing food to be cooked. A plate 11 is provided. 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 121 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 distorted 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. Next to this display window 20, a rotary operator 21,
Parts of each of the 22 images are discussed at regular intervals. Further, below the display window 20 on the operation panel 3, a slide knob 23 is provided that is movable in the horizontal direction in the drawing. On the other hand, inside the operation panel 3, there are rollers 31 and 32 connected to the rotary operators 21 and 22, respectively.
are provided substantially parallel to each other, and an endless belt-shaped body 33 having a constant width is passed around these rollers 31 and 32.

Thus, by operating the rotary operators 21 and 22, the rollers 31 and 32 are rotated, respectively, and the belt-shaped body 33 is rotated accordingly. In this case, various cooking programs are sequentially written and provided on the band-shaped body 33, each of which includes a display pattern X and a program recording medium such as a magnetic tape Y.

The display pattern x consists of a cooking name, amount of food to be cooked, cooking time, heating output, and a cooking picture.
The magnetic tape Y is of a certain length and has a corresponding display/
The cooking fan 0 is provided below the dinner pan in a direction perpendicular to the moving direction of the strip 33. The cooking time and heating output, which are the contents of the gram, are coded and recorded. Further, a reading section, for example, a magnetic head 40 is attached to the knob 23 within the operation panel 3.

This magnetic head 40 has a strip 33 attached to the display window 20.
When the above display pattern X corresponds, it comes into contact with the magnetic tape Y. Therefore, at this time, by sliding the knob 23, for example, from the left side in the figure to the right side in the figure, the cooking program information recorded on the magnetic tape Y can be read by the four magnetic heads. FIG. 5 shows the control circuit.

501 is an AC power source, and one end is connected to a high voltage transformer 52 via the power switch 8, a normally open contact 55a of a relay 55 (to be described later), and a bidirectional thyristor 51 in series.
One end of the primary winding 52 of is connected, and this primary winding 52
, are 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 anode and cathode of the magnetron 12 are connected to the secondary winding 522 of the transformer 52, and the heater of the magnetron 12 is connected to the secondary winding 523 of the transformer 52. In addition, magnetron 1
The anode of No. 2 is grounded. Further, a door switch 53 is connected to the connection point between the power switch 8 and the contact 55a.
, one end of a relay 55 is connected in series with a normally open contact 54a that responds to the cooking switch 7 and a main control unit 601 (described later), and the other end of this relay 55 is connected to a power source 5.
It is connected to the pond end of 0. A normally open contact 55a3 of the relay 55 is connected in parallel to the cooking switch 7. On the other hand, the power source 50' is connected to the main control section 60 via the power switch 8.

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 access).・The above thyristor 51 and contact 54a are
It controls the Note that in this case, the control unit 601
The normally open contact 55a4 of the overlay relay 55 is connected to this. When this contact 55a4 is opened, it gives a cooking start command to the main control section 60. Next, the operation in the above configuration will be explained.

First, turn on the power switch 8. Then, the main control unit 6
0 is connected to the power source 501, and the contact 54a is closed by a command from the main control section 60. Then, by operating the rotary operators 21 and 22, the strip 33 is rotated, and a desired cooking, for example, a display pattern X for "steak" is displayed on the display window from among the various display patterns X on the strip 33. Make it compatible with 2 rivers. When the knob 23 is slid, the cooking program information recorded on the magnetic tape Y is read by the magnetic head 401, and this read cooking program information is stored in the RAM (not shown) in the main control unit 601. (No). In this way, the door 2 is opened and the food to be cooked (meat) is displayed on the display window 20.
An amount (400 g) of the display pattern x on the displayed strip 33 is placed on the shelf board 5.

Then, by closing the door 2, preparation for cooking is completed. However, when cooking switch 7 is turned on,
The relay 55 is connected to the electric wire 20, and its subsequent state is maintained by closing the contact 55a3 of the relay 55.Furthermore, the operation of the relay 55 causes the contacts 55a, 55a2 to close.
is closed, and the contact 55a4 is also closed. At this time, the main control unit 60 closes the contact 55a4 to
The contents of M, that is, the cooking program information, are read out sequentially, and the cooking program information (cooking time and heating output) is
The conduction of the thyristor 51 is controlled based on. In this way, the magnetron 12 has a predetermined oscillation output (600W → 200W
), and cooking is carried out by the high frequency waves emitted from this magnetron 12. After that, when the cooking time (5 minutes and 10 minutes) according to the cooking program information has elapsed, the contact 54a opens and the operation of the relay 65 stops.
The operation of the magnetron 12 is stopped by the opening of the contacts 55a, 55a2. In other words, cooking is finished. Therefore, it is possible to sequentially record various cooking programs on the strip 33 and store the strip 33 within the operation panel 3, and to select a desired cooking program by moving the strip 33 across the display window 2. Compared to the conventional system where you have to worry about where to store your cards or search for the desired card from among the cards,
It is clearly easy to operate. Furthermore, since the strip 33 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, since the length of the strip 33 is short, only about two types of cooking programs can be recorded.
If rollers 71 and 72 are provided behind the rollers 31 and 32, respectively, as shown in FIG. 6, the belt-shaped body 33 can be made relatively long, and can be used for many types of cooking. It is possible to record grams. Furthermore, as shown in FIG.
2, it becomes possible to record even more types of cooking programs. In this case, being able to record a wide variety of cooking programs is very effective in a situation where the range of cooking types has expanded in recent years. Furthermore, if a certain blank area is provided on the strip 33, it is convenient because a new cooking program can be added to the blank area. Furthermore, although the magnetic tape Y is used as the program recording medium and the cooking program is discussed magnetically, the discussion is not limited thereto, and for example, the discussion may be conducted optically.

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, a strip in which various heating programs including a display pattern and a Proxerum recording medium are successively described and provided is provided movably with respect to the display window, and the strip is A reading unit is provided to read the contents of the program recording medium corresponding to the display pattern displayed in the display window among the display patterns of the various heating programs above, and the reading unit performs heating based on the read heating program. This highly practical high-frequency heating device allows you to input various heating programs with extreme accuracy over and over again, and also improves operability when inputting heating programs. can be provided.

[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 5 show an embodiment of the present invention. FIG. 2 is an external perspective view, and FIG.
The figure is a configuration diagram schematically showing the inside of the cooking chamber, FIG. 4 is a perspective view showing the belt-shaped body and its peripheral mechanism, FIG. 5 is a configuration diagram of the control circuit, and FIGS. It is a perspective view showing a modification. 10... Heating chamber (cooking chamber), 12... High frequency generator (magnetron), 20... Display window, 33...
...Band-shaped body, 40... Argument part (magnetic head),
X... Display pattern "Y... Program recording medium (magnetic tape). Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7

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 and a display pattern movable with respect to the display window are provided. A program recording medium in which time and heating output are coded and recorded; a band-shaped body in which various heating programs are sequentially written and provided; and a display pattern of the various heating programs on the band-shaped body; The apparatus further comprises a reading section that reads the contents of the program recording medium corresponding to the display pattern displayed on the display window, and the heating operation is performed based on the heating program read by the reading section. High frequency heating device.