JPS6148363B2 - - Google Patents

Description

Detailed Description of the Invention The present invention relates to an electric cooker, which heats food materials in a sealed container to trap water vapor and create a high-pressure and high-temperature state of 1 atm and 100 degrees Celsius or more inside to cook food in a pot. The purpose of this invention is to speed up oven cooking and thereby save fuel costs.

Traditional hot pot dishes take a long time to cook because the temperature of the food never rises above 100 degrees, no matter how much you heat it. In particular, cooking using beans, dried foods, hard meat, etc. was very time-consuming, so people tended to avoid cooking itself.

The same goes for cooking in the oven: large chunks of meat or potatoes may be burnt on the surface but still raw inside; to prevent this, cook slowly and at low heat. There was a drawback that it had to be done.

On the other hand, in recent years, pressure cookers have been used to cook hot pot dishes at high speeds, but they can only be cooked in stews, and because of the high speed simmering in a sealed container, green fish and meat can retain a fishy smell. A new problem has also emerged.

The present invention solves the above-mentioned conventional drawbacks, and one embodiment thereof will be described below with reference to the accompanying drawings.

In Figures 1, 2, and 3, reference numeral 1 denotes a cylindrical pressure vessel with a bottom that is installed horizontally so that the opening is located at the front. A pressure adjustment device is disposed, which includes an adjustment hole 2 for adjusting the pressure, and an adjustment weight 3 for closing the hole.

4 is an outer flange 1a provided at the opening of the pressure vessel 1;
It is an annular fastening member rotatably supported by a front plate 5, and has a plurality of locking claws 4a bent inward at appropriate intervals on its outer peripheral edge. Reference numeral 6 denotes a lid body that removably closes the opening of the pressure vessel 1, and has a plurality of locking protrusions 6a provided at appropriate intervals on the outer periphery. This locking protrusion 6a is formed to correspond to the locking claw 4a. The rotation range of the annular fastening member 4 is approximately one pitch of the locking pawl 4a, and the locking pawl 4a and the locking protrusion 6a are securely engaged at the dead end portion at one end, and completely disengaged at the other end. It's becoming like that.

7 is an annular packing held inside the lid 6 by a support claw 6a, which presses against the front surface of the outer flange 1a of the pressure vessel 1 when the lid is closed to seal the space between the pressure vessel 1 and the lid 6; The inside of the pressure vessel 1 can be sealed and pressurized. Reference numeral 8 denotes a door which can be opened and closed by a hinge arm 9 with its lower part as a fulcrum, and is composed of a door frame 9, a glass 10, and a door frame rear cover 11.

Further, the door frame back cover 11 is provided with a clip pin 12 for detachably holding the lid body 6.
By fitting a handle 13 fixed to the lid 6 into the clip pin 12, the door 8 and the lid 6 are opened and closed as one unit. Furthermore, when the door 8 is closed, the lid 6 closes the opening of the pressure vessel 1, and in this state, when the annular fastening member 4 is rotated,
The lid body 6 connects the opening of the pressure vessel 1 with an annular packing 7.
Confidentially blocked via. Note that when the lid 6 is removed from the door 8, the oven becomes a normal oven.

14 is a handle fixed to the window frame 9. 1
Reference numerals 5 and 16 denote an upper heating device and a lower heating device, which are airtightly provided in the pressure vessel 1 and are designed to heat the inside of the pressure vessel 1.

A temperature sensor 17 is also airtightly attached with a protective cover 18 and detects the temperature inside the pressure vessel 1, and the output of this temperature sensor 17 is used to determine the amount of heat generated by the upper heating device 15 and the lower heating device 16. It is designed to be controlled by a power control device 19.

20 is a main body constituting the outer shell of the vessel, 21 is a front frame of the main body 20, and 22 is a back plate.

Reference numeral 23 designates an operation panel on which a temperature adjustment knob 24, a heating device changeover switch 25, a fastening knob 26 for rotating the annular fastening member four times, and a timer 27 are arranged.

In the above configuration, the heating device changeover switch 25
After setting to supply power to the lower heating device 16, fill a suitable container with water and heat the lower heating device 1 in the pressure vessel 1.
The lid body 6 is placed on top of the lid body 6 and the annular packing 7 is attached.
When the door 8 is closed and the fastening knob 27 is operated, the annular fastening member 4 is rotated, and the locking pawl 4a and the locking protrusion 6a engage with each other to form a sealed pressurized container. When the power is turned on, the water boils and the generated steam causes the pressure and temperature inside the pressure vessel 1 to rise as shown in Figure 5. At time t ₁ , the pressure inside the pressure vessel 1 is set by the pressure regulator. When the pressure reaches, for example, 2 kg/cm ² and exceeds that level, the adjustment weight 3 is pushed up, the adjustment hole 2 is opened, and the steam escapes to the outside, maintaining the pressure at 2 kg/cm ² .

Therefore, under normal atmospheric pressure (1 kg/cm ² ), steam does not rise above 100°C, but under 2 kg/cm ² , the water vapor in pressure vessel 1 remains constant at about 120°C as long as there is water. When food is placed in a container with water, the food is boiled at 120°C, making it soft in a short amount of time, making it possible to cook hot pot dishes at high speed. Further, in this case, since the entire interior of the pressure vessel 1 is of a sealed and pressurized type, high-speed pressure cooking can be performed in any container containing the food to be cooked as long as it can be placed inside the pressure vessel.

In addition, the heating device selector switch 25 is set to the upper heating device 1.
5 and the lower heating device 16, and in a state where the saucer 28 and the gridiron 29 are arranged in the pressure vessel 1 as shown in Fig. 4, a closed pressure vessel can be formed in the same manner as described above. It becomes like a sealed oven.

Therefore, after placing the food material on the saucer 28 or the gridiron 29, if electricity is applied, the pressure and temperature will rise as shown in Fig. 5 due to the expansion of the air in the pressure vessel 1 and the water vapor caused by the moisture in the food material itself. At time _t1 , the temperature reaches 2Kg/cm ² and 120°C.

As long as the food material contains water that can be evaporated, the temperature remains at 120°C, and both the pressure and temperature remain constant, but when the water runs out, the temperature _suddenly rises. However, the internal pressure gradually decreases due to a slight leakage of gas from around the annular packing 7 and the like as the generation of water vapor stops.

Due to these pressure and temperature characteristics, the saucer 28 and the grill 29
As mentioned above, the mass of meat and potatoes placed on the
cm ² , after being steamed at high speed with steam at 120°C, the internal temperature rises rapidly, making it possible to burn the surface. In addition, in FIG. 5, P indicates pressure and T indicates temperature.

In addition, when the lid 6 is removed from the door 8, the oven can be truly used.

As is clear from the above description, according to the present invention, a bottomed cylindrical pressure vessel having a pressure regulating valve is oriented horizontally, the opening is positioned forward, and the inside of this pressure vessel is used as the inside of the oven. This enables pressure cooker cooking in any container, softens cooking ingredients in a short time, and saves energy. Also,
By using a grill or saucer, you can perform pressure roasting, which applies pressure to the melanoidin reaction that eliminates the odor of cooked food, aminocarbonyl reaction, and deep fry flavor phenomenon.
Allows for soft, energy-saving oven cooking. Furthermore, by opening the pressure regulating valve or removing the lid, and covering the opening of the pressure vessel with a door,
It can be used in the same way as a conventional oven, expanding the range of cooking possibilities, and the lid can be attached and removed by opening and closing the door without touching the hot lid directly. As a result, we were able to make significant improvements in terms of safety and operation.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of an electric cooker showing an embodiment of the present invention, Fig. 2 is a perspective view of the same, Fig. 3 is a perspective view of main parts showing the lid attaching/detaching part of the electric cooker, and Fig. 4 is a sectional view of the electric cooker showing an embodiment of the present invention. FIG. 5 is a cross-sectional view showing a state in which the electric cooking device is equipped with a saucer and a grill to perform pressure roasting cooking, and FIG. 5 is a time characteristic diagram of temperature and pressure of the electric cooking device. DESCRIPTION OF SYMBOLS 1... Pressure vessel, 2... Adjustment hole, 3... Adjustment weight, 6... Lid, 8... Door, 15... Upper heating device, 16... Lower heating device.

Claims (1)

[Claims] 1. A bottomed cylindrical pressure vessel with an opening located at the front, a removable lid that closes the opening of the pressure vessel, a heating device airtightly provided in the pressure vessel, and a heating device provided inside the pressure vessel. a pressure regulating device that maintains a constant pressure; and a pressure regulating device that is provided in front of the lid body so as to be openable and closable;
An electric cooker that also has a door that holds the lid.