JPS5911691Y2 - Rice cooker pressure regulator - Google Patents

Description

[Detailed description of the invention] This invention relates to a pressure regulating device for a rice cooker, and its purpose is to be able to adjust the internal pressure with an extremely simple structure.
To provide a pressure regulating device for a rice cooker that is easy to handle and can be detachably attached to a ventilation hole from the outside.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings, which are examples of the present invention.

Figures 1 to 3 show a pressure regulating device 1, which is the main part of the present invention, and 2 is a fitting made of synthetic resin with an approximately U-shaped cross section with an open top, and the outer periphery of the upper end has almost a full circumference. It has a retaining protrusion 3, and a groove 5 for fitting a packing 4 and a male thread 6 on the outer circumferential surface of the central portion.

The mounting tool 2 has a mounting hole 7 at the center of the bottom.
An intake hole 8 is provided around the .

9 is a push made of silicone rubber, and there is an exhaust hole 10 in the center.
A valve seat portion 11 is integrally provided on the upper surface, and a large-diameter valve body 12 is integrally provided on the lower surface.

This push 9 is made by forcibly fitting the valve seat 11 into the mounting hole 7 of the fixture 2 from below, so that the valve seat 11 and the valve body 12 support the fixture 2 from above and below. In the attached state, the valve body 12 closes the lower surface of the intake hole 8 by its own elastic force.

Reference numeral 13 denotes a ball made of stainless steel or plastic, which is movably housed in the fixture 2, and is pushed by the pusher 9.
It is stably placed on the valve seat portion 11 of the valve.

Reference numeral 14 denotes a stainless steel cap plate having a plurality of steam vent holes 15; and 16, a protrusion 17 provided on the inner surface of the outer periphery engages with the retaining protrusion 3 on the outer periphery of the upper end of the fixture 2; The cap plate 14 and the cap body 16 constitute a cap.

Incidentally, the cap plate 14 and the cap body 16 may be formed into one piece.

The cap plate 14 is placed on the upper end of the fixture 2 after storing the ball 13 inside the fixture 2, and by fitting and fixing the cap body 16 to the upper end of the fixture 2, the cap plate 14 is It is attached to the upper end opening of the fixture 2.

Thereby, the pressure regulating device 1 is assembled and unitized.

4 and 5 show a rice cooker to which the pressure regulating device 1 is attached, 21 is the main body of the rice cooker, 22 is an outer pot fixed inside the main body 21, and 23 is attached to the outer peripheral surface of the outer pot 22. 24 is a heating plate fixed to the bottom of the outer pot 22 and has an annular rice cooking heater 25 embedded therein; 26 is a thermal response device provided in the center of the heating plate 24; 27 is a heating plate whose bottom surface is a heating plate; The inner pot is housed within the outer pot 22 so as to be in contact with the inner pot 24.

Reference numeral 28 denotes an outer lid, which is an example of a lid that can be opened and closed with respect to the main body 21; 29, a handle; a heat sink 30 is fixed to the lower surface of the outer lid 28; The space between them is filled with a heat insulating material 31, and a packing 30a provided at the outer peripheral end of the heat sink 30
The inside of the inner pot 27 is sealed by tightly contacting the upper surface of the inner pot.

An inner cover mounting shaft 32 is vertically installed in the center of the heat dissipation plate 30, and a mounting push 33 made of a rubber material is slidably fitted to this inner cover mounting shaft 32. An inner cover 34 is airtightly attached to the inner cover 34.

The outer peripheral end of the inner lid 34 is brought into pressure contact with the upper surface of the inner pot 27, and the mounting push 33 is compressed upward by the reaction force at the time of pressure contact, and the pressure contact force of the inner lid 34 against the inner pot 27 is moderately applied. is being adjusted.

Note that 35 is a steam hole provided in the inner lid 34.

The outer cover 28 and the heat sink 30 are provided with ventilation holes 3 that communicate inside and outside.
6. 37 is provided, and this ventilation hole 36. 37
The above-mentioned pressure regulating device 1 is attached to.

That is, the ventilation hole 37 of the heat sink 30 has a ventilation cylinder receiver 38.
is fixed by caulking, and on the other hand, a ventilation cylinder 39 is fitted and fixed in the ventilation hole 36 of the outer cover 28, and a seal packing 41 is provided on the outer periphery of this ventilation cylinder 39 to seal the space between it and the ventilation cylinder receiver 38.
is installed.

This seal packing 41 prevents steam from entering the inside of the outer lid 28 loaded with the heat insulating material 31.

A female thread 40 is provided on the inner surface of the ventilation cylinder 39, and by screwing the male thread 6 of the fixture 2 into the female thread 40, the packing 4 fitted on the outer periphery of the fixture 2 can be inserted. The pressure regulator 1 is crimped onto the upper edge of the cylinder 39, and the pressure regulator 1 is airtightly attached to the ventilation cylinder 39.

When the outer lid 28 is closed, the outer peripheral end of the inner lid 34 is in pressure contact with the upper surface of the inner pot 27, so that the mounting push 33 is pushed upward by the reaction force.

The ball 13 of the pressure regulator 1 is placed on the valve seat 11 of the pusher 9, and the exhaust hole 10 is closed.

When the rice cooking heater 25 is energized now, the inside of the inner pot 27 is sealed by the packing 30a of the heat sink 30, so that rice is efficiently cooked.

When the steam pressure in the inner pot 27 rises to a predetermined pressure or higher on the way, the ball 13 of the pressure regulator 1 rises slightly from the valve seat 11 due to the steam pressure, and the steam in the inner pot 27 rises to the inner lid 34. The steam is exhausted to the outside through the steam hole 35, the exhaust hole 10 of the pressure regulating device 1, and the steam vent hole 15 of the cap plate 14, so there is no fear that the steam pressure in the inner pot 27 will rise excessively.

Additionally, if the cooked rice is left for a long time, the inside of the inner pot 27 will naturally cool down, and as the temperature drops, the inner pot 27 will cool down naturally.
The pressure inside becomes negative, and the outer lid 28 cannot be easily opened relative to the rice cooker main body 21.

However, when this negative pressure exceeds a predetermined pressure, the valve body 12 of the pusher 9 bends downward to open the intake hole 8 and take outside air into the inner pot 27, so the negative pressure in the inner pot 27 is eliminated. The outer cover 28 can be opened easily.

In the above embodiment, the pressure regulator 1 is attached by screwing the male thread 6 of the fixture 2 into the female thread 40 of the vent pipe 39, but the present invention is not limited to this. It may also be fixed by forcibly fitting it.

As is clear from the above explanation, according to the present invention, the positive pressure inside the rice cooker can be adjusted by the weight of the ball, and the negative pressure can be adjusted by the elastic force of the push valve body, so that delicious cooked rice can be produced when cooking rice. On the other hand, when keeping the rice warm, it has a sealed structure that prevents heat from escaping, outside air from entering, and prevents dew dripping and drying on the surface of cooked rice, and the lid can be easily opened and closed.

In addition, the pressure regulating device of the present invention is a unit that incorporates the pusher, ball, and cap into the fitting, and can be attached and detached from above to the ventilation hole of the lid body, so there is no need to worry about losing parts. It is easy to handle without any problems, and it is also easy to clean.

In particular, this pressure regulator can be installed and removed from the outside of the ventilation hole.
The pressure regulating device can be replaced and cleaned extremely easily without opening the lid.

[Brief explanation of drawings]

Fig. 1 is an exploded half-sectional view of the pressure regulating device according to the present invention;
3 is a longitudinal sectional view, FIG. 4 is a schematic sectional view of a rice cooker equipped with a pressure regulating device according to the present invention, and FIG. 5 is an enlarged view of section A in FIG. 4. 1...Pressure regulating device, 2...Mounting tool, 6.
...Male thread, 7...Mounting hole, 8...
...Intake hole, 9...Push, 10...
・Exhaust hole, 11... Valve seat part, 12...
Valve body, 13... Ball, 14... Cap plate, 15... Steam vent hole, 16...
・Cap body, 21...Rice cooker body, 2
2... Outer pot 25... Rice cooking heater, 2
7... Inner pot, 28... Outer lid, 30.
... Heat sink, 36. 37...Vent hole.

Claims (2)

[Scope of utility model registration request] (1) An inner pot is housed in a main body with a heat-retaining structure, a lid that can be opened and closed with respect to the main body is provided with a ventilation hole that communicates with the inside and outside, and the inner lid attached to the bottom surface of the lid is pressed into contact with the inner pot. At the same time, in the rice cooker in which the inner pot is heated by the rice cooker provided at the bottom of the main body, the top surface is open and the cross section is omitted, and the bottom center has a mounting hole, and there are holes around the mounting hole. is fitted with a fitting provided with an intake hole, and is fitted into the mounting hole, has an exhaust hole in the center, has a valve seat on the upper surface of the exhaust hole, and closes the lower surface of the intake hole on the outer periphery of the lower part. A push with a valve body that is movable inside the fitting, a ball that is stably placed on the valve seat of the push, and an outer peripheral end that is attached so as to cover the top opening of the fitting. A cap that is fitted and fixed to the upper end of the tool and has a steam vent hole in the upper surface is made into a unit, and this is attached to the ventilation hole provided in the lid body in a manner that it can be attached and detached from above and in a sealed state. Pressure regulator for rice cooker. (2) A ventilation tube having a female thread on the inner surface is fixed to the vent hole, and a male thread is provided on the outer surface of the fixture to be screwed into the female thread. Pressure regulator for rice cooker.