JPS5926294B2 - Cooking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooking device in which the heating time by a heater is controlled by a timer, and after the heating is finished, the food is left as is to make the food uneven.

Generally, in this type of cooker, such as a pressure cooker, the food is heated to about 120 degrees by a heater, and after the heating is finished, the food is heated for a while (generally, the cooking time is By leaving the food as it is (until the temperature of the food drops to about 100 degrees), the food will be cooked unevenly and the cooking will be completed.

However, conventional pressure cookers do not have a means to easily determine whether cooking is in progress or has finished, and there is a risk of accidentally opening the lid during cooking. In such cases, heat is wasted and the desired uneven effect cannot be expected, but the internal pressure has not yet been sufficiently reduced, causing the contents and steam to spout out and cause burns. There was a risk of this happening, so it could not be called a very good product.

However, the present invention utilizes the timing function of a timer that controls the heating time by the heater to display unevenness after heating is completed, so that the cooking device can be used in an ideal manner.

EMBODIMENT OF THE INVENTION Hereinafter, a pressure cooker will be cited as an embodiment of the present invention and will be described in detail with reference to the drawings.

In the circuit diagram of FIG. 1, a timer 1 is an electric type driven by a timer motor 2, and has first and second switches 3 that are both turned on when set and turned off back and forth as time passes.
, 4.

Both the first and second heaters 5 and 6 heat the cooking device, and the first heater 5 is connected to the timer driving thermostat 7.
In addition, the second sweater 6 forms a series circuit with the temperature control means 8, and both are connected to an AC power source with the first and second switches 3 and 4 interposed in series.

Further, the timer motor 2 is connected in parallel to a series circuit of a first switch 3 and a thermostat T.

The temperature control means 8 is composed of a heat-sensitive element or an electronic circuit including the element, and controls the supply of electricity to the second heater 6 according to changes in the temperature of the food to adjust the temperature of the food to the cooking temperature TH (generally (approximately 120 degrees).

Further, the thermostat T is always on, and turns off when the temperature of the food reaches a temperature TL that is slightly lower than the cooking temperature TH.

The first switch 3 has an irregularity indicator lamp 9 and a resistor 10.
A series circuit of a cooking indicator lamp 11 and a resistor 12 are connected to the thermostat 7 in parallel.

Next, the structure of the timer 1 will be explained with reference to FIGS. 3 and 4.

On the timer shaft 13 of the timer motor 2, two protrusions 14, 15 are formed in the circumferential direction, with their starting ends aligned and their ending ends shifted by a predetermined amount from each other.
Between the ends of 5, there is a time t2 (approximately 1
The dimensional difference 1 is made to correspond to the 5-minute root degree).

Therefore, movable contact plates 16 are provided on both of the protrusions 14 and 15, respectively.
．． 17 are arranged facing each other, and the respective movable contact plates 16° 11 and the common contact plate 18 form the first and second switches 3, 4. OFF operation occurs before and after the interval.

On the other hand, a legitimate child 19 having an index a is attached to the outer end of the timer shaft 13, and a display plate 20 is fixed to the instrument side on the outer periphery of this legitimate child 19.

On this display board 20, the symbol ``10'' is attached to the position indicated by the index a during OFF operation of the first switch 3, and the symbol ``OFF'' is attached to the position indicated by the index a during OFF operation of the second switch 4.
A time scale is attached sequentially clockwise from the "position."

Next, the operation of this embodiment will be explained.

Now, rotate the eldest child 19 to set the index a to the desired time, for example, the t1 scale, and set the timer 1. The second switches 3 and 4 have movable contact plates 16 and 17 with protrusions 1, respectively.
4 and 15 and come into contact with the fixed contact plate 18, both of them are turned on, and the first and second heaters 5 and 6 begin to be energized to start cooking the food.

At the beginning of this cooking, the thermostat 7 is in the ON state, so the timer motor 2 is in the stopped state.

When the heating by the heaters 5 and 6 progresses and the temperature of the food reaches TL, the thermostat 1 is set to 0FFL.
As a result, the timer motor 2 starts driving and performs a timekeeping operation, and the first heater 5 stops generating heat.

Therefore, from now on, heating of the food is performed only by the second heater 6, and when the temperature of the food further rises and reaches the cooking temperature TH, the temperature control means 8 is activated and the second heater 6 is energized. The cooking temperature TH is maintained, and the cooking of the food progresses.

On the other hand, an indicator lamp 11 that lights up when the thermostat 7 is turned off indicates externally that cooking is being performed by the heater 6.

Then, the time set by the timer 1, that is, the time t1 has passed since the thermostat 7 was turned off, and the legitimate child 19
When the index a reaches the "0" scale, the movable contact plate 16 is released from the fixed contact plate 18 due to the release of the pressure by the protrusion 14, and the first switch 3 is turned off.

Then, the second heater 6 is de-energized by the OFF operation of the first switch 3, and the heating cooking ends.
Next, the food becomes uneven due to residual heat.

The transition from heating cooking by the heater to uneven cooking can be known from both the lighting of the indicator lamp 9 and the position indicated by the index a of the eldest child 19, and the uneven cooking is displayed while cooking continues.

In other words, the indicator lamp 9 lights up when the first switch 3 is turned off to indicate that unevenness has occurred.
In addition, the index a of the legitimate child 19 indicates that it has shifted to unevenness by pointing to the unevenness display area between "0" and "cut".

Then, when the time t2 necessary for unevenness has passed, the legitimate child 1
The indicator a of 9 moves to the position indicating "off" and the uneven display ends, and the second switch 4 is also turned off to stop the timer motor 2 and at the same time the indicator lamp 9 is turned off and the uneven display ends. .

The cooking of the food is only completed when the uneven cooking is completed in this way.

As described above, in this embodiment, after the heating by the heater is completed, it is possible to easily determine whether or not it is in the uneven state by the indicator lamp 9 or the position of the indicator a of the eldest child 19. This eliminates the possibility of accidentally opening the lid.

Therefore, it is possible to use it safely and ideally without wasting heat during smearing, failing to achieve the desired smearing effect, or causing burns due to the steam and contents gushing out forcefully. That will happen.

In addition, in the above-mentioned embodiment, the time from the start of heating by the heater to the rise to the cooking temperature, which is easily influenced by external factors such as room temperature, is not included in the set time of timer 1. Although the display lamp 9 and the one using the eldest child 19 are used to display unevenness, it is sufficient if either one of them can be used to display unevenness.

Furthermore, the time from the start of heating by the heater until the temperature rises to the cooking temperature is included in the set time of timer 1, and
If the uneven display is performed using the above, it is also possible to omit the second switch 4 by using a wind-up timer.

According to the present invention as described above, by providing a display means that uses the axis of the timer that controls the heating time by the heater to display the heating time and the normalized display with the operating point of the switch as the boundary, it is possible to You no longer have to open the lid while you're in the middle of a night without being able to tell whether it's in the middle of a night or not.
It is possible to reliably obtain the desired unevenness effect, allowing ideal use, and there is no need to separately install special parts for unevenness display, and there is no confusion when setting the heating time on the timer. It can be made easy to use.

[Brief explanation of the drawing]

Fig. 1 is an electric circuit diagram of the cooking device of the present invention, Fig. 2 is a temperature characteristic diagram of the food to be cooked, and Fig. 3 is a diagram of the main parts of the timer.
FIG. 4 is an explanatory diagram of the display section of the timer. 1...Timer, 6...Heater, 9.
...Unevenness indicator lamp, 13... Timer axis, 19... Heirloom child, 20... Display board.

Claims (1)

[Claims] 1. In a device that temporally controls heating cooking using a heater using a timer, the timer is provided with a switch that operates by rotating the timer shaft during the timing operation to terminate heating cooking using the heater, and after the operation of the switch, the timer remains constant. It is characterized by having a structure that stops the timing operation as time passes, and comprising display means that uses the rotation of the timer shaft to display heating time and unevenness based on the operating point of the switch. Cooking device.