JPS636986Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooker, particularly a pressure cooker.

Conventional pressure cookers incorporate a timer device into the pressure cooker and have two automatic extinguishing temperatures (113℃,
It was set at 120 degrees Celsius (120 degrees Celsius) and was only for pressure cooking; no other cooking was possible.

The present invention has been made in view of this point, and its purpose is to enable all kinds of cooking (simmering) to be done using a pressure cooker.

The basic structure of the present invention is a pressure cooker in which a pressure cooker is heated by an electric heating device, a timer is activated when the set temperature is reached, and the fire is automatically extinguished when the set time of the timer has elapsed. The temperature is controlled by one resistance temperature element and a resistor selectively connected to it, at approximately 80℃ (hereinafter referred to as the first set temperature) and approximately 100℃.
℃ (hereinafter referred to as the second set temperature), approx. 120℃ (hereinafter referred to as the third set temperature)
The temperature can be set in three stages (referred to as a set temperature), and at the first set temperature, a continuous heating state is achieved independently of the timer.

With the above-mentioned configuration, the present invention enables long-term cooking (stewing) over low heat of oden, stew, etc. by continuous heating at approximately 80°C.
It is now possible to heat at a set temperature of 100°C for a set time, and it is also possible to pressure cook in a pressurized state, making it possible to cook all kinds of boiled food, from low-heat long-term heating to pressure cooking, with one pressure cooker. I can do it.

Hereinafter, embodiments of the present invention will be described in more detail based on the drawings.

In Fig. 1, reference numeral 1 denotes a pot body, and a lid body 2 that covers the pot body can be engaged with a flange 3 formed at the upper end of the pot body, and in the engaged state shown in the figure. It is locked and prevented from falling out.

Further, a gasket 4 is interposed between the peripheral edge of the lid body 2 and the brim 3 to ensure airtightness of the joint portion. Furthermore, the lid body 2 has a through hole 7 in its center that is closed by a valve portion 6 of a weight 5, and the weight of this weight 5 is set appropriately.
The maximum rising pressure of the internal pressure of the pot body 1 is set appropriately.

The pot body 1 is removably housed in a body case 8, and its bottom 9 is placed on a hot plate 11 in which a heater 10 is embedded, and a heat-sensitive tube is placed in a through hole 12 in the center of the hot plate. The top surface of 13 is the bottom part 9
is in contact with. A positive temperature resistance temperature element (for example, a thermistor) 20 is attached to the inner surface of the top surface of the heat-sensitive cylinder, and the positive temperature resistance temperature element is inserted into an electric circuit to be described later.

To explain this electric circuit in more detail according to FIG. 2, the heater 10 is connected in parallel with a timer 21, and in the circuit to the heater:
Positive characteristic resistance temperature element 20 and resistors 22, 23, 24
A temperature setting circuit 30 in combination with the above is inserted.

Further, the output contact 25 of the timer is connected to the power supply E, and the heater 1 is opened and closed by the output contact 25 of the timer.
The circuit to 0 becomes conductive/open. Further, the output contact of the timer is normally OFF,
The output contact 25 is turned ON when a set time is set, and the output contact 25 is turned OFF when the set time of the timer has elapsed.

Further, a manual switch 26 provided in parallel with the output contact 25 enables continuous power supply to the heater 10 by closing the manual switch 26.

Furthermore, a control circuit 40 provided in parallel with the temperature setting circuit 30 and the circuit of the heater 10 includes resistors 22 and 2 connected in series with the positive temperature resistance temperature element 20.
When a current value (or voltage) is input before and after 3 and 24 and this value becomes the set value, that is, when the current of the temperature setting circuit 30 is cut off by the positive temperature resistance element, A relay 50 connected to the control circuit is turned on.

The output contact 51 of the relay is inserted into the circuit to the timer 21, and is closed when the relay 50 is turned on.

In the above, the resistors 22, 23, and 24 are set appropriately in advance, and when the movable contact 61 of the changeover switch 60 inserted between the heater 10 and these resistors is connected to the first resistor 22, When connected to the second resistor 23, the second set temperature is set; and when connected to the third resistor 24, the third set temperature is set.

To explain the operation of the above embodiment in more detail, first, when the selector switch 60 is connected to the first resistor 22 and the manual switch 26 is turned on, the heater 10 is controlled to the first set temperature and continuously generates heat. Can be used to cook stews over low heat.

Next, the changeover switch 60 is connected to the second resistor 23.
and turn on the output contact 25 of the timer 21.
(when timer 21 is set), approximately 100
℃, heating by the heater 10 progresses, and when the set temperature is reached for the first time, the control circuit 4
The input signal is input to 0, and the circuit to relay 50 is
The output contact 51 of the relay is thereby turned ON and the timer 21 is started. During this time, the inside of the pot body 1 is maintained at the second set temperature, so
This pressure cooker also allows you to make regular boiled foods.

When the set time of the timer 21 has elapsed, the output contact 25 is turned off and the heater 10 automatically stops generating heat.

Next, to pressure cook, switch 60
The movable contact 61 of is connected to the third resistor, and the timer 2
1 and turns on the output contact 25, it is heated to the third set temperature in the same way as above,
In this case as well, the set temperature maintenance time is determined by the timer 21.
The circuit to the heater 10 is turned off when this set time has elapsed. In this cooking, the set temperature is set at approximately 120C, so traditional pressure cooking is possible.

In the above embodiment, the manual switch 26 and the changeover switch 60 are made independent, but at the first set temperature, they are linked so that when the movable contact 61 is connected to the first resistor 22, the manual switch 26 is turned on. This will improve operability and prevent erroneous operations.

Since the present invention has the above configuration, it has the following advantages.

(1) Heating at the first set temperature and heating at the second set temperature are both done with the lid sealed, so there is less heat loss compared to when cooking in a non-pressurized pot with a regular pot. As a result, thermal efficiency is improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the present invention, and FIG. 2 is an electric circuit diagram thereof, in which: 10...heater, 20...positive temperature resistance temperature element, 21...timer.

Claims (1)

[Scope of utility model registration request] In a pressure cooker in which the pressure cooker is heated by an electric heating device and the heating time at the set temperature is controlled by a timer, the set temperature is controlled by one resistance temperature element and a resistor connected to this to approximately 80°C. The first set temperature can be selectively set to a first set temperature of about 100 degrees Celsius, a second set temperature of about 100 degrees Celsius, and a third set temperature of about 120 degrees Celsius. A pressure cooker designed to