JPS5851846Y2 - electric rice cooker - Google Patents

Description

[Detailed description of the invention] This invention relates to an electric rice cooker, more specifically an indirect electric rice cooker.

Conventionally, a sealed space is formed between the rice cooker and the rice cooker housed in the rice cooker body, and a rice cooking heater is housed within the rice cooker in such a way that it does not come into direct contact with the rice cooker. A type of rice cooker is known in which the air in a space is heated by convection, and a rice cooker is indirectly heated by the heated air.

This type of electric rice cooker (hereinafter referred to as indirect electric rice cooker) uses a rice cooking heater to heat the air in the closed space between the rice cooker body and the rice cooker. Although sufficient heating is carried out from the top and bottom of the rice cooker, it is difficult for the heated air to reach the top side of the rice cooker lid, so sufficient heating from the top side of the rice cooker cover is not carried out, and the rice at the top is heated. This often resulted in uneven cooking.

Therefore, there is a method of attaching a small heater to the rice bowl lid and using the heater to heat the top surface of the rice bowl, but attaching a heater separately to the rice bowl lid has the disadvantage of increasing the cost of the product. Ta.

This idea was devised in view of the above drawbacks.

This invention will be explained below based on a first embodiment shown in FIG.

The rice cooker main body 1 has a double wall structure with an inner container 2 and an outer case 3, and the upper parts of the inner container 2 and the outer case 3 are joined to form an opening edge of the main body 1, and the opening edge includes: An annular shoulder member 4 made of synthetic resin is attached and held using the coupling means,
Further, a heat-retaining heater 14 is wound around the outer upper part of the inner container 2, and a heat insulating material 6 such as glass wool is interposed in a side space 5 formed between the inner container 2 and the outer case 3. .

A rice bowl 7 is housed in the inner container 2 of the rice cooker main body 1 in a manner that it can be stored and removed at will, and a collar 8 that extends outward is connected to the upper opening edge of the rice bowl 7. horizontal part 8 of the guard 8
a is at least two consecutively arranged on the inner peripheral side of the annular shoulder member 4
([#1. The rice bowl 7 is supported on the upper horizontal support piece 9, and as a result, the rice bowl 7 forms a continuous space 11 between the inner bowl 2 and the inner bowl 2 from the outer bottom to the outer side. A ventilation gap 10 is formed between the collar 8 of the rice bowl 7 and the horizontal support piece 9 of the annular shoulder member 4.

A rice cooking annular sheath heater 12 is disposed at the bottom between the rice bowl 7 and the inner container 2 in a manner that it does not come into contact with the rice bowl 7. It is fixed to the bottom of the inner container 2 by.

The rice cooker main body 1 is provided with a main body lid 18, which has a double wall structure consisting of an inner plate 15 and an outer plate 16, with a heat insulating material 17 such as glass wool interposed between them.

The main body lid 18 is rotatably pivoted on the hinge part of the main body 1 at the negative side part, and is engaged with a locking part of the main body 1 by a lock lever toward the part opposite to the hinge part of the main body 1. An annular packing 19 is added to the outer peripheral edge of the inner plate 15 by a plurality of screws 20 so as to be in airtight contact with the outer peripheral edge of the annular shoulder member 4.

A rice bowl lid holding pin 21 having a large diameter portion at the lower end is attached to the center of the inner plate 15 of the main body lid 18 in a hanging manner.

A through hole 23, which is slightly larger in diameter than the large diameter portion 21a of the pin 21, is bored in the center of the rice bowl lid 22, and an elastic body 24 is fitted into the through hole 23. body 24
A hole 25 slightly smaller than the diameter of the pin 21 is bored in the hole 25, and by forcibly inserting or pulling out the restricting hole 25 beyond the large diameter portion 21a of the pin 21, the rice cooker lid 22 is opened to the pin 21. It is removably fitted into the

An annular standing wall 26 is connected to the upper part of the elastic body 24, and when the main body lid 18 is closed, the annular standing wall 26 elastically abuts against the inner plate 15 and prevents the outside of the rice bowl lid 22. It has the effect of pressing the peripheral portion against the horizontal portion & of the collar 8 of the rice bowl T.

A gap 27 of a predetermined width is formed between the inner plate 15 of the main body cover 18 and the rice cooker cover 22 when the main body cover 18 is in a nitrogen-closing state; The portion 27 and the space portion 11 are communicated with each other.

A rice cooker collector 28 that also serves as a pressure regulator is attached to a predetermined position on the periphery of the rice cooker lid 22, and a cylindrical part 29 of the rice cooker 28 that faces outside the rice cooker is attached to the main body. It is fitted into a through hole 30 formed in the lid 18 and is in airtight contact with an annular packing 31 attached at a heightwise intermediate portion Km of the through hole 30.

The heated steam in the rice bowl 7 is passed through the holes 32 and 33 of the rice cooker 28.
The sticky rice accumulated in the sticky rice collector 28 is discharged to the outside through the small cylinder part 34 and collected in the rice bowl 7 according to the pressure change inside the rice bowl 7.
will be collected within.

In addition, since steam leaking from between the rice cooker 7 and the rice cooker lid 22 during rice cooking may increase the internal pressure in the space 11 and the gap 27, a A steam vent hole (not shown) is formed in the annular packing 19 or in the annular packing 31 provided between the main body lid 18 and the steam recovery device 28 to adjust the pressure.

As shown in Fig. 1, when this idea is clicked and rice cooking is started by closing the main body lid 18, the rice cooking heater 12 is heated, and the air heated by the heater 12 is
As shown by the arrow in the figure, the space part 11 is ascended, and the ventilation gap 10
It passes through and reaches the gap 27.

As is clear from this, the rice bowl 7 and the rice bowl lid 22 are
Since the entire area is surrounded by heated air, the rice can be cooked evenly and with beautiful texture.

In addition, it is possible to improve thermal efficiency by making the inner container 2 mirror-finished to serve as a heat-reflecting surface, and making the outer surface of the rice bowl 7 a heat-absorbing surface.

In addition, a sticky rice collector 28 is attached to the rice bowl lid 22, and its cylindrical portion 29 is fitted into the through hole 30 of the main body lid 18 via an annular packing 31, so that the rice bowl lid 22 can be held. will be carried out reliably.

In addition, the supporting means for the rice bowl 7 is arbitrary. For example, an appropriate number of support protrusions for supporting the rice bowl 7 may be provided on the bottom of the inner container 2. The collar 8 of the rice bowl 7 is made large enough to cover the member 4 and placed on the upper surface of the annular shoulder member 4.
A rice bowl 7 with an upward spacing protrusion that supports the
A spacing protrusion may be formed by punching out the horizontal part 8a of the collar 8 downward.

Alternatively, the rice bowl lid 22 may be simply placed on the rice bowl without being added to the main body lid 1B.

Next, this invention will be explained based on a second embodiment shown in FIG.

Note that the same members as those shown in FIG. 1 are designated by the same reference numerals.

Inner plate 40, outer plate 41, and heat insulating material 4 interposed between them
A through hole 44 is bored in the center of the main body lid 43, which is made up of
5 is added to the inner wall of the through hole 44 so that the top of the hole protrudes.

A cylindrical portion 47 of a stick collector 46 is removably fitted into the through hole 44 against the elasticity of the gasket 45, and a top having an annular hanging wall 48 is provided at the upper end of the cylindrical portion 47. A wall 49 is fixed.

The annular hanging wall 48 has a handle (a handle (
A steam recovery device 46 is added to the center of the rice bowl lid 51, and the steam inside the rice bowl γ is The sticky rice is exhausted to the outside through the hole 52 of the vessel 46 and the hole 50, and the sticky rice collected in the sticky rice collector 46 is collected into the rice bowl 7 by the movement of the ball valve 54 in the small cylinder portion 53.

The rice bowl lid 51 is biased downward by an annular elastic body 55 having a plurality of ventilation slits 56 attached to the inner plate 40 so as to come into close contact with the rice bowl 7.

In this embodiment, since the sticky rice collector 46 is provided in the center of the rice bowl lid 51, the sticky rice collector 46 can be made larger compared to the one in the first embodiment. There are advantages.

According to this invention, rice can be cooked using heated air that surrounds the entire rice bowl and rice bowl lid, so delicious rice that is cooked evenly throughout can be obtained.

In addition, since the above objective can be achieved using only the rice cooking heater, there is no need to add a small heater to heat the top surface of the rice cooker, and the rice cooker can be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a partially omitted vertical cross-sectional view showing a first embodiment of this invention, and FIG. 2 is a vertical cross-sectional view of a main part of the second embodiment. 1... Rice cooker body, 7... Rice cooker, 11
・・・・・・Space part, 12・・・Annular sheathed heater for rice cooking, 18° 43・・・・・・Body lid, 22.5
1... Rice bowl lid, 27... Gap part.

Claims (1)

[Scope of utility model registration request] A rice cooker is housed in a rice cooker main body, a space is formed between the rice cooker and the rice cooker main body, a rice cooking heater is disposed in the space so as not to come into contact with the rice cooker, and a rice cooker is placed in the space so as not to contact the rice cooker. A gap is formed between a main body lid provided on the rice bowl and a rice bowl lid provided on the rice bowl, and when the main body lid is closed, the space and the gap are formed. A sticky rice collector is attached to the lid of the rice bowl, and a rising cylinder part of the rice bowl collector is fitted into a through hole in the lid of the main body so that its top part faces the outside air. An electric rice cooker with an annular gasket interposed between the part and the through hole.