JPS5886115A - Electric cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric cooker that heats food materials in a sealed heating chamber to trap water vapor and bring the interior to a high temperature and high pressure state of 1 atm - 100°C or higher. For foods that can be cooked, the pressure regulating valve is opened for a certain period of time before the end of cooking, and the water vapor present inside is discharged to brown and brown the surface of the food using a white-skinned heating element. The aim is to provide an electric cooker that can

In recent years, electric pressure cookers have been developed that have a heating element inside a pressure vessel and can perform roasting under high pressure, making it possible to speed up oven cooking and save fuel costs.
The pressure inside the pressure vessel is increased by the water vapor present inside the vessel, and after the heating element is energized, the pressure regulating valve is opened to release the internal water vapor. intervenes, so the surface of the food is less likely to burn.
It has the disadvantage that it may appear slimy and does not look appetizing.

The present invention has been made to solve the above-mentioned conventional drawbacks, and one example of the present invention will be described below with reference to the drawings.

1 is an outer body, 2 is an inner body supported on the outer body 1, an outer leg heating element 3 is fixed to the inner bottom, and an appropriate number of notched grooves 2a are bored in the inner peripheral edge of the upper end. .

4 is a leg attached to the outer bottom of the outer body 1;
is attached to the lower surface, and the lower opening is closed with a back plate 6. 7 is a display plate supported by the outer body 1 and the bracket 4.

Reference numeral 8 denotes a cylindrical container with a bottom that can be freely attached to and detached from the inner body 2, and the outer bottom surface is in thermally contact with the outdoor lamp heating element 3, and a plurality of containers are arranged at appropriate intervals in the outer circumferential direction of the outer periphery of the upper end. A number of locking protrusions 8a are provided, and holding protrusions 8b are provided in the inner circumferential direction between these locking protrusions 8a to hold an annular backing 9 placed on the inner circumference of the upper end. Further, a tongue piece 8C is fixed to the upper part of the outer surface of the container 8, which fits into the notch groove 2a of the inner body 2 to position the container 8 and prevent it from rotating.

10 is a lid that covers the upper opening of the container 8, and the outer peripheral flange at the lower end *
An annular fastening member 11 is rotatably engaged with. Further, a locking pawl 11a is formed by bending inward on the outer peripheral edge of the lower end of the fastening member 11, and the locking pawl 11a and the locking protrusion 8a are bayonet-engaged, whereby the container 8, the lid 10, A fastening member 11, a backing 9, and a pressure vessel 12 are formed.

Further, an operating handle 13 is attached to the front upper surface of the lid 1o with a slit 13a.
A part of the fastening metal fitting 14 fixed to the fastening member 11 through a faces upward, and a fastening knob 16 is attached. In addition, when the fastening fitting 14 comes into contact with one end of the handle 13a of the operating handle 13, the locking protrusion 8a of the container 8 and the locking claw 11& of the fastening member 11 are securely engaged and pressure is applied. The inside of the container 12 is sealed and the airtight state is closed again! Jノ)13
When the fastening fitting 14 comes into contact with the other end of a, the locking protrusion 8
The width is such that the engagement between a and the locking pawl 11a can be completely disengaged.

A lid hinge 16 is attached to the rear upper surface of the lid 10 and covers the rear lower opening with the lid hinge cover 17, and is rotatably pivoted on a pivot shaft 19 with respect to a body hinge 18 attached to the rear side of the outer body 1. It is worn. Further, 20 is a body hinge cover that covers the rear opening of the body hinge 18.

Reference numeral 21 denotes a weight-type pressure regulating valve disposed on the upper surface of the lid 1o through a through hole of the lid hinge 16, and is composed of a pressure regulating hole 22 penetrating with the outside and a weight 23 that closes this from above. 024 is a retractable renoid arranged at the inner lower part of the lid hinge 16, which releases the pressure to the outside when the internal pressure becomes about 2 atmospheres or more. Normally, when the coil 26 is not energized, the plunger 27 is pressed by the spring 28 and protrudes in the incoming direction to tilt the weight 23 and forcibly release the pressure inside the pressure vessel 12 to the outside. Further, when the coil 26 is energized and excited, the plunger 27 is attracted to the coil 26 against the force of the spring 28, and the weight 23 closes the pressure adjustment hole 22.

Reference numeral 29 denotes a forced ventilation device such as a blower having a built-in motor, which is disposed at the inner lower part of the lid hinge 16, and is configured to send air into the pressure vessel 12 through a flexible air supply pipe 3o.

Reference numerals 31 and 32 denote a white skin heating element and a temperature detection device which are airtightly held behind the inner surface of the lid 10 and are arranged at the upper part of the pressure vessel 12. The temperature detection device 32 includes a heat-sensitive cylinder 33 with an open top surface and a temperature sensor 34 such as a thermistor, which is disposed at the inner bottom of the heat-sensitive cylinder 33 and detects the internal air temperature of the pressure vessel 12 and changes its resistance. It is configured.

Reference numeral 36 denotes a reflector plate attached to the inner surface of the lid 10, with a rear part cut out so that the temperature detection device 32 faces the inside of the pressure vessel 12.

36 is a control device which receives a signal from the temperature detector 34 and adjusts the internal temperature of the pressure vessel 12 to the temperature set by the temperature setting device 37 attached to the display board 7.
・Electrification control is performed by turning 3 ON and OFF. Note that 38 is a temperature control knob attached to the temperature setting device 37 and used to set the temperature.

39 is a changeover switch, and a changeover knob 4o attached to this switch allows power to be supplied to either the interior or exterior lamp heating element 31 or 3 at the same time.0 Figure 6 shows the electrical connections. in a circuit, in a circuit, timer 41
has a built-in switching contact 41a, and this switching contact 4
1a normally has the a contact side closed and the b contact side open. The switching contact 41a is configured to open the a contact side and close the b contact side only during a certain period of time before the timer 41 ends.

Further, a relay 42 in the circuit turns on and off the power supply to the inner and outer lamp heating elements 31 and 3 through the action of the control circuit 36.

The system is constructed as described above, and its operation will be explained next.

Place the container 8 containing the food on the outdoor lamp heating element 3 so that the tongue piece 8c fits into the cutout groove 2aK of the inner body 2, and open the upper part of the container 8 with the lid 1o using the operation handle 13. When the fastening member 11 is rotated using the fastening knob 16 located at one end of the slit 13a, the locking protrusion 8a and the locking pawl 11a are bayonet engaged, and pressure is applied via the backing 9. A container 12 is formed.

Next, the selector switch 39 is turned to energize the white skin heating element 31, and the temperature control knob 38 is set to a desired temperature (for example, 230°C).
) and then set the timer 41 to a predetermined time, the solenoid 24 is energized, the plunger 27 is attracted to the coil 26, and the weight 23 is moved to the pressure adjustment hole 22.
occlude.

Also, power is supplied to the white skin heating element 31, and the food to be cooked is heated. Due to this heating, the moisture contained in the food becomes steam, and the pressure inside the pressure vessel 12 gradually increases, and is maintained at about 2 atmospheres by the pressure regulating valve 21. On the other hand, when the air temperature in the pressure container 12 rises further than the white skin heating element 31 and reaches a predetermined temperature, the control device 36 operates to turn off the current to the white skin heating element 31 to maintain the temperature at a predetermined temperature.

After a certain period of time (for example, 6 minutes) before the end of the timer 41, the switching contact 41 of the timer 41
Since A opens the A contact side and closes the B contact side, the power supply to the solenoid 24 is stopped and the plunger 27 is pressed by the spring 28 and protrudes in the incoming direction, tilting the weight 23 of the pressure regulating valve 21. While exhausting the steam in the pressure vessel 12 and returning the pressure to atmospheric pressure, power is supplied to the forced ventilation device 29,
Air is fed into the pressure vessel 12 to promote discharge of steam from the pressure regulating valve 21.

From this state until the end of the timer 41, the food to be cooked is roasted by the white skin heating element 31 under atmospheric pressure, and at the same time as the timer 41 ends, power is supplied to the white skin heating element 31 and the forced ventilation system 29. will be stopped.

As a result, the cooked food is roasted for a certain period of time in a state with little steam involvement, so the surface becomes golden brown and exhibits a fragrant aroma and taste.

As is clear from the above description, according to the present invention, the white skin heating element disposed inside the pressure vessel and the pressure regulating valve are opened during a certain period of time before the end of energization to the white skin heating element and the white skin heating element is disposed inside the pressure vessel. Because it has a means to maintain the food under atmospheric pressure, it not only has the high-speed cooking and energy saving features of conventional electric pressure cooking, but also has the so-called melanoidin that can brown the surface of the food. This makes it easier to cause reactions and deep fry flavor phenomena, making it possible to cook food that is extremely tasty and visually pleasing.

Further, by providing a forced ventilation device that exhausts 1° of air in the pressure vessel in conjunction with the opening of the pressure regulating valve, it is possible to further discharge steam, and the quality of the cooked food is also improved.

Furthermore, since the pressure regulating valve is opened before the cooking is finished, there is no need to worry about tilting the weight by hand to release the steam, so there is no risk of burns from the steam, improving safety, etc. It has great value.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an electric cooker according to an embodiment of the present invention with the lid closed; Fig. 2 is a perspective view of the electric cooker with the lid open and the container removed; Fig. 3; 4 is a perspective view of the container of the electric cooker, and FIG. 6 is an electric circuit diagram thereof. 8°811.・Container, 10・・・・・・Lid 1.12・
...Pressure vessel, 21...Pressure regulating valve, 29.
...forced ventilation device, 31...--white skin heating element,
41 ・・・・・・Timer. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 4 h @ Figure 5 f

Claims (2)

[Claims] (1) It has a pressure vessel consisting of a bottomed container and a lid equipped with a pressure regulating valve, and a white skin heating element disposed inside this pressure vessel, and during a certain period of time before the end of energization to the white skin heating element. An electric cooking appliance comprising means for opening a pressure regulating valve to maintain the inside of a pressure vessel at atmospheric pressure. (2) The electric cooking appliance according to claim 1, further comprising a forced ventilation device that exhausts air in the pressure vessel through the pressure regulating valve in conjunction with the opening of the pressure regulating valve.