JPS5984028A - Heating cooker - Google Patents

Abstract

PURPOSE:To permit the setting of times of a short period and a long period by a method wherein a timer motor, having two speeds, is provided and an electric source for the timer motor is connected intermittently when a low speed is selected for the timer motor while the timer motor is conducted continuously when the high speed is selected for the timer motor. CONSTITUTION:When the heating time is set by a timer tap 18 into the range of 0- 200 deg., a switch 21 is connected to the (a) side of a contact by the rotation of a cam 20 provided on a timer shaft 19, and when a switching button of strong fire side is selected and an operating button 6 is pushed, switches 21, 22 are closed, the switch 23 is connected to the (a) side of the contact, the electric source is conducted to the timer motor 10 continuously and a high-frequency wave is radiated into a heating chamber from the high-frequency wave generating device provided at the secondary side of a transformer 24. When the heating time is set by the timer tap 18 into the range of 200- 300 deg., the switch 21 is connected to the (b) side of the contact by the cam 20 provided on the timer shaft 19, the electric source of the timer motor 10 is put ON and OFF by an intermittent switch 25 due to the effect of the cam provided on a motor 17 for driving, whereby the operating time of the high-frequency wave generating device may be controlled and the heating time may be set for the time of a long period.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cooking device such as a high-frequency heating device that dielectrically heats an object to be heated.

Conventional structure and its problems Conventional heating cookers, such as high-frequency heating devices, dielectrically heat only the object to be heated, such as food, so they are very convenient because they have good heating efficiency and can heat quickly. It is a heating cooker. In addition, depending on the cooking menu, when cooking with long-term simmering heat such as defrosting, cooking eggs, and stewing dishes, the 0f function can be used to sterilize high-frequency output and heat at low output for a long time. Heating devices have also been incorporated into conventional products, and have shown some effectiveness. In particular, stewed dishes are heated at low output for a very long time, so the heating time must be set for a long time.

For example, with dielectric heating using the usual 600W or high-frequency output of about 600W, it would be satisfactory if the time could be set for 16 to 20 minutes, but when it comes to stews, the high-frequency output is about 1/3 of the normal output. Since heating is performed by output, it is necessary to set the heating time to about 1 hour, so it would be extremely inconvenient if the conventional heating time could only be set to about 16 to 20 minutes. As an example of this, as shown in FIG. 1, the object to be heated (not shown) is placed on the rotary mounting table 2 in the heating chamber 1, and after the door 3 is closed, the high output timer 4 is set to Set the heating time according to the menu table 6 using the power switch and the electric switch, and press the operation button 6 to start cooking.
The cooking was configured to end when the high output timer 4 expired.

Therefore, it was necessary to provide a time switch used for normal heating cooking and an oJ-capable time switch with a long-time setting for stewing dishes.

An example of this is shown in FIG. This has a high frequency output switch, and has a time switch d, a high output timer 4 and a low output timer 7. When the output is high, d sets the heating time, and when the high output is set, the heating time is set using the high output timer 4. In the case of boiling, etc., the heating time was set using a low output timer 7.

? The pJa diagram shows this circuit, and the low output timer 7
When is operated, the time switch 8 is turned on and the low output timer motor 9 starts rotating. At this time, the time switch 8 of course remains closed until the time is up.

In order to solve the above-mentioned problem, there is a device that employs a two-speed timer 1o, which is a heating time setting device that can set a short time or a long time with a single timer. As shown in Figure 4, the timer is divided into intervals of approximately 20 minutes, and up to 20 minutes, it is possible to easily set the short time with a large scale, and from the point exceeding 20 minutes, the timer is an operating time display scale The scale becomes smaller,
The operating speed of the time switch can be made variable using the switching button 13 so that long-term settings can be made.

However, in a heating cooker with such a configuration, a time lag occurs structurally when the operating speed of the timer motor is varied, and the pointer 110 angle of the time switch whose operating speed is variable and the scale of the two-speed timer 1o. 12 causes a root variation of about 2 to 6 minutes with respect to the setting scale, and as mentioned above, the quality of cooking deteriorates due to the variation in heating time.

In addition, the structure is much more complicated than a 1-speed timer, and not only is the cost of parts almost the same as when two timers are used, but the structure is also disadvantageous in terms of quality. , Benefit 3: ``Setting'' 1: It saves space.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide a heating cooker that is easy to use and allows short and long time settings due to its internal structure.

In order to achieve the object described in Structure of the Invention, the heating cooker of the present invention is provided with a timer motor having two speeds, low speed and high speed, in the heating time setting device for setting the operating time of the heating means. When the speed is high, the timer motor is powered on and off, and when the speed is high, the timer motor is powered continuously.With a single timer, it is possible to easily set a timer from a short time to a long time. This has the effect of providing an easy-to-use heating cooker, such as the corresponding timer scale being easier to read.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 6 to 8.

Note that the same parts (A) as in the conventional example will be described with the same reference numerals.

In FIG. 5, 14 is a door switch that is linked to the opening/closing of the door provided at the opening 11 of the heating chamber, and 10 is the operating time of a high-frequency generator/device (not shown) that is heating means for the object to be heated. This is a two-speed timer used as an example of a heating time setting device. 16 is a lamp for illuminating the heating room; 16 is a fan motor for cooling the high-frequency generator; and 17 is a motor for driving a rotary table for rotating the object to be heated housed in the heating room. 8 is a time switch that is closed by turning the timer knob 18, which is the operation part of the timer shown in FIG. The switch 21 is connected to the contact A side by the rotation of the cam 20 provided on the timer 4q1+ 19 shown in FIG.
22 is closed, the switch 23 is connected to the contact A side, power is continuously supplied to the timer motor 10, and high frequency waves are radiated into the heating chamber from the high frequency generator provided on the secondary side of the transformer 24. Ru.

Low heating output with a pinch of 18 on the sunda timer, i.e. 200 to 3
When the heating time is set in the range oOO, the timer motor 10 is activated by the intermittent switch 26 by the action of the provided cam.
When the power is turned on and off, the operating time of the K frequency generator can be set to one side, and the heating time can be set longer.

The timer scale 12, which is the operating time display scale provided around the timer knob 18, is the high heating output 20
Minutes (O~2oO°) are 1 minute and 1003oO0) are 1
Since the minutes are set to 10, the time can be set more accurately with high heating output.

FIG. 8 shows the configuration of a two-speed timer, and shows the configuration of the timer Il? Diameter t2G of cam 20 provided at ll+19
is located around the timer knob 18 and is preferably at least 1/2 of the diameter of the four timer scales 12 provided on the timer number board 26.

The diameter 1C of this cam 20 is 1 of the diameter 1r of the timer scale 12.
If the value is less than /2, the accuracy of the timer will actually be impaired in cooking, making it impossible to perform good cooking.

As described above, according to the heating cooker of this embodiment, by changing the 1-speed timer to a 2-speed timer with a simple configuration depending on the purpose of use, it is possible to create an easy-to-use heating cooker with stable quality and performance at an inexpensive price. can be provided to

In addition, by using one timer as a two-speed timer, it is possible to reduce the space and assembly work required for several units, and the power supply for the timer motor 10 is also reduced.
The timer scale 1 is configured to be turned on and off by an on/off switch 25 operated by a cam 20 provided at the rotary stage 19 and a cam provided at the motor 17 for driving the rotary mounting table.
It is possible to arbitrarily invest 2 in 1.

The rotational speed of the timer motor 1o is switched by a switch 21 that is linked to the cam 20 provided on the timer 1lill 119, and the diameter 1C of the cam ZO is set to be larger than 1/2 of the diameter 1T of the timer scale 21. With this configuration, reliability, durability, and blue change of tie-1 can be improved to -1, and the timer scale 12 can be improved.
By setting the cooking time in the range of 0 to 20 minutes with 1 minute being 10', it is easy to set the cooking time, and by using the on/off switch 26, the following effects can be achieved according to the present invention as described in F above. effect can be obtained. When the heating means is set for a long period of time, that is, when the speed of the timer motor is slow, the power supply to the tie-7 motor is switched on and off, so the timer scale can be designed as desired, and the timer accuracy can be improved. You can also use an excellent heating cooker (74).

Furthermore, regardless of the timer speed, it is easy to set high-output and low-output heating times, further improving usability. ,

[Brief explanation of the drawing]

Figures 1 and 2 are front views of a conventional heating cooker, Figure 3 is an electric circuit diagram of the heating cooker shown in Figure 2, and Figure 4 is another conventional example of a heating cooker. 11 is a side view, FIG. 5 is an electrical circuit diagram of a heating cooking PF that is an embodiment of the present invention, FIG. 6 is a front view showing the operation section of the timer, and FIG. 7 is a perspective view showing the main parts of the timer. Figure, No. 1 time setting purchase, 20...
...Kat1.21...Switch) Name of agent Patent attorney Toshio Nakao and 1 other person 1st
Figure 2b Figure 4bA Figure 6 Figure 7 mRI7 143-

Claims (2)

[Claims] (1) A heating chamber for accommodating an object to be heated, a heating means for heating the object to be heated housed in the heating chamber, and a heating time setting device for setting an operation time of the heating means, the heating time being The setting device has a two-speed timer motor, and the timer motor is provided with a cam and a switch, and when the timer motor is at a slow speed, the timer motor is powered on and off. (2) An operation time display scale is provided around the operation part of the heating time setting device, and the diameter of the cam provided on the timer motor is at least 1/2 or more than the diameter of the operation time display scale. The heating cooker described in No. 1.