JPH046366B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pressure cooker such as a pressure jar rice cooker that cooks rice under pressure and keeps it warm.

Conventionally, as shown in FIG. 1, a pressure lid 42 covering an upper opening of a pot 41 has a spherical shape with a top projecting upward. Therefore, the weight part 4 of the nozzle that adjusts the pressure attached to this top part
There is a problem that the sticky substance etc. blown out from the pressure lid 42 flows along the spherical upper surface of the pressure lid 42 and along the outer surface of the main body 45 from the outer peripheral fitting part, contaminating the place where it is placed or flowing into the main body 45. Ta. Main body 45
The body 45 is formed in such a way that the viscosity can be discharged from its lower end, but since the inside of the main body 45 has many uneven parts and the viscosity is highly viscous, it is difficult to completely discharge the viscosity, which results in the generation of odors. There were problems such as causes.

Therefore, an object of the present invention is to store the viscosity and the like spewing out from the pressure regulating device that regulates the pressure inside the pot in the pressure lid and prevent it from flowing into and out of the main body, and at the same time improve usability and cooking efficiency. It is an object of the present invention to provide a pressure cooker with improved characteristics.

An embodiment of this invention is shown in FIGS. 2 and 3. In the figure, reference numeral 1 denotes a rice cooking heater into which a heater 1a is cast, and has a through hole 1b in the center. 2
is a protective frame, which has a through hole 2a in the center of the bottom, a rice cooking heater 1 is attached to the inner bottom, and a heat retention heater 3 for heat retention is installed on the outer upper part. Reference numeral 4 denotes a center thermostat incorporating a magnet 4a, which is housed in a thermosensitive case 5 which is fixed to a through hole 1b in the center of the rice cooking heater 1 and penetrated through a through hole 2a of the protective frame 2. 6 is a switch lever that is linked to the center thermostat 4, and a rice cooking button 7 is inserted into the tip. Reference numeral 8 denotes a micro switch, which opens and closes an electric contact portion by the movement of a switch lever 6. 9
1 is an upper frame made of a ring-shaped resin material in which a hook part and a hinge part are integrally molded. A protective frame 2 is attached to the upper frame, and a body 10a constituting the outer shell of the main body 10 is fitted to the lower part. 11 is an insulating material that prevents heat radiation during cooking and keeping rice warm, increasing thermal efficiency. 12 is a display board on which a switch lever 6 and a micro switch 8 are attached. 13 and 14 are a cord reel and legs attached to the lower surface of the body 10.

Reference numeral 15a designates an outer lid made of a resin material with a handle portion integrally molded therein, and constitutes a part of the lid body 15. The outer lid 15a has a support part that fits into the hinge part of the upper frame 9, which is joined by a hinge shaft 16, and a hook lever 18 to which a hook button 17 is fixed to the other end is attached, and which fits into the hook part of the upper frame 9. The entire lid 15 is then locked. Reference numeral 19 denotes an outer cover that thermally protects the lower side of the outer cover 15a, and has a fitting recess on the inner surface of the lower end. Reference numeral 20 denotes a heat dissipation plate forming the lower surface of the lid body 15, and a lid heater 2 for heat retention is installed on the upper surface.
1 is attached with double-sided tape. The heat sink 20 is attached to the outer lid cover 19 via a heat radiation gasket 23, giving the lid 15 a double structure. The heat sink 20 has a through hole in the center, and the holder gasket 22 inserted into the through hole is inserted between the heat sink 20 and the outer cover 15a and is prevented from coming out. Reference numeral 24 denotes a pot that is removably placed on the rice cooking heater 1, and has a fitting edge at its upper end.

Reference numeral 25 denotes a pressure lid that airtightly covers the upper opening of the pot 24 via a pot gasket 26, and is formed into a dish shape, that is, a shallow concave spherical surface facing upward, and has an edge portion provided below that fits with the edge of the pot 24. ing. Nabe Patsukin 2
6 has a T-shaped cross section and can be inserted from both directions. A nozzle 27 having a weight 28 removably set at its tip is attached to the upper surface of the pressure lid 25, and the nozzle 27 and the weight 28 constitute a pressure regulating device 27'. This pressure regulator 27' passes through the lid 15, and is disposed such that the steam blowout position is within the through hole of the lid 15, and the steam blowout direction is directed toward the pressure lid 25 below. Also,
As a safety measure when the pressure regulator 27' does not operate, a safety device 29 serving as a second pressure regulator is provided.
is attached to the center of the pressure lid 25. pressure lid 2
5, the upper end of the safety device 29 protruding from the upper surface has a fitting protrusion 29a that removably engages with the holder gasket 22, and the lower end also protrudes from the lower surface of the pressure lid 25 and forms a mixing protrusion 29b similar to the upper end. ing. 3
Reference numeral 0 denotes an inner cover, which is provided on the lower surface of the pressure cover 25 to prevent a large amount of sticky substance from being blown out from the nozzle 27. The inner lid 30 has small holes at several locations.
The inner lid 30 has a fitting protrusion 29b at the lower end of the safety device 29.
An inner lid gasket 31 that removably fits into the inner lid gasket 31 is attached to the through hole in the center, and a pot gasket 26 is fitted on the outer peripheral wall.

Next, the operation will be explained. When the rice cooking button 7 is pressed, the magnet 4a in the center thermostat 4 is attracted to the upper ferrite in conjunction with the upward movement of the switch lever 6, and the micro switch 8 is turned on, energizing the rice cooking heater 1 and starting rice cooking. becomes. When the temperature inside the pot 24 rises and the internal pressure rises, the pot gasket 26 presses against the pot 24 and the inner surface of the pressure lid 25, so that the temperature inside the pot 24 increases to 100°C.
It goes above and beyond. When the pressure inside the pot 24 reaches the set pressure of the weight 28, the weight 28 is pushed up by the internal pressure and steam is released from the nozzle 27 to maintain the internal pressure constant and cook rice. When rice cooking is complete, the bottom temperature of the pot 24 rises, the magnet 4a in the center thermostat 4 separates from the ferrite at the top, the switch lever 6 moves downward, and in conjunction with this movement, the micro switch 8 turns OFF. Heat retention heater 3, lid heater 21
The current is switched to keep it warm.

Pressure cooking is carried out in this way, but if the rice is cooked with more than a predetermined amount of water, sticky rice etc. will blow out from the nozzle 27. Since the steam blowing position of the pressure regulator 27' is located in the through hole of the lid 15, and the steam blowing direction is directed downward toward the pressure lid 25, the blown viscosity, etc. is reliably guided onto the pressure lid 25. It does not leak out of the main body 10. Further, the sticky substance introduced onto the pressure lid 25 is collected on the pressure lid 25 because the pressure lid 25 is formed into a substantially concave spherical surface. Therefore, the sticky substance etc. do not flow down from the outer periphery of the pressure lid 25 into the main body 10, and the inside and outside of the main body 10, the place where it is placed, etc. are not soiled, and it can be used comfortably. If the weight 28 does not operate due to clogging of the nozzle 27 or the like, the safety device 29 releases the pressure. Therefore, damage to the pot 24 and the like due to an abnormal increase in internal pressure is prevented. Further, the pot gasket 26 that airtightly holds the inside of the pot 24 is formed with a T-shaped cross section and can be inserted from both the top and bottom directions, making it convenient to handle.

As described above, in the pressure cooker of the present invention, the pressure regulating device is provided so as to pass through the lid, and the steam blowing position is within the through hole of the lid.
The steam blowing direction is the downward pressure lid direction,
Since the pressure lid to which the pressure adjustment device is attached is dish-shaped, the sticky substance etc. blown out from the pressure adjustment device is reliably collected in the pressure lid without flowing out of the main body. Not only is it hygienic as it does not flow into the main unit and contaminate the inside and outside of the main unit or the place where it is placed, but it also improves cooking efficiency with the double-layered lid that prevents heat from radiating upwards. At the same time, when it is desired to lower the pressure inside the lid, the pressure regulating device can be operated from the outside, making it easy to lower the pressure, thereby improving operability and usability.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional example, FIG. 2 is a sectional view of an embodiment of the present invention, and FIG. 3 is a partially enlarged sectional view thereof. 1... Rice cooking heater, 10... Main body, 15... Lid, 15a... Outer lid, 20... Heat sink, 24...
Pot, 25... Pressure lid, 27... Nozzle, 27'...
...Pressure regulator, 28... Weight, 29... Safety device.

Claims (1)

[Claims] 1. A cylindrical main body with an open top and a built-in rice cooking heater, a pot removably housed in the main body, a dish-shaped pressure lid that airtightly closes the top surface of the pot, and a lid that penetrates the pressure lid. A pressure regulating device is provided and has a blowing nozzle, and a double-structured lid is provided above the pressure lid and closes the upper surface of the main body, and the pressure regulating device The pressure cooker is provided so as to penetrate through the pressure cooker, and the steam blowing position of the pressure regulating device is within the through hole of the lid, and the steam blowing direction is directed toward the lower pressure lid.