JP2002345635A - Boil-over preventing device for rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve heat insulating/moisture keeping effects by surely catching glutinous water to prevent the occurrence of boil-over and reducing the incoming and outgoing of air during heat insulation, in a boil-over preventing device provided with a glutinous water catching part in the middle of a steam passage provided in the lid of a rice cooker. SOLUTION: A heat radiation plate set 5 is freely detachably attached to the lower surface of the lid 3 of the rice cooker and a primary catching part 12 and a secondary catching part 37 communicated to the primary catching part 12 are provided in the middle of the steam passage 40 passing through the heat radiation plate set 5 and the lid 3. A catching part steam hole 28 communicating the primary catching part 12 and the secondary catching part 37 is provided on the bottom surface of a valve chamber 27 provided on the exit side of the primary catching part 1, the catching part steam hole 28 is closed by a valve body 31 housed in the valve chamber 27 and the valve body 31 is floated by a steam pressure at the time of cooking rice.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing spills in a rice cooker such as a rice cooker.

[0002]

2. Description of the Related Art Various measures have conventionally been taken in order to prevent spills of steam from blowing out to the outside together with steam during cooking rice with a rice cooker. The main one is that a rice catcher is detachably provided at the outlet of the steam passage of the lid of the rice cooker, and the rice catcher is detached from the upper surface of the lid so that it can be cleaned (Japanese Patent Laid-Open No. Hei 10 (1998)). -201620, JP-A-2000-30427, etc.).

A radiator set of a lid heater is provided on the lower surface of the lid.
The heat sink set is detachably attached to the lower surface of the lid for convenience of care.

[0004]

As described above, the conventional rice cooker is provided with only one catching portion in the steam passage, so that the catching of the sweetness is insufficient. There was a case where spills occurred.
Further, since the steam passage including the rice catcher is always open to the outside, the moisture of the cooked rice is easily diffused to the outside, and there is a problem in the moisturizing performance. Furthermore, the care for removing the attached tongue has the inconvenience of separately cleaning both the tongue catching portion removed from the lid and the heat sink set.

[0005] Accordingly, the present invention provides a method for capturing rice
The objective is to improve the moisturizing performance and maintainability of cooked rice, and to reduce the number of other components.

[0006]

In order to solve the above-mentioned problems, the present invention provides a rice cooker in which a heat sink set is detachably attached to a lower surface of a lid of the rice cooker, and the rice cooker penetrates the heat sink set and the lid. In a device for preventing a spillover of a rice cooker comprising a steam passage open to the outside of the vessel and a rice catcher provided in the middle of the steam passage, the rice catcher is provided on the upper surface of the heat sink set. A secondary capturing portion provided in a vapor passage between the primary capturing portion and the lid vapor hole, and a capturing portion vapor hole passing through the primary capturing portion and the secondary capturing portion. A configuration was employed in which the valve element, which was provided on the bottom surface of the valve chamber provided on the outlet side of the primary capturing section and floated at a low pressure accompanying rice cooking, was housed in the valve chamber.

[0007] According to the above configuration, the valve body floats at a stage where the steam pressure generated by the rice cooking is low, and the steam hole of the trapping portion on the bottom of the valve chamber is opened, so that no pressure is applied to the rice cooking operation. Once the steam is mixed with the steam,
Only the steam that is captured while passing through the primary capturing unit and the secondary capturing unit in order and is separated from the waste is exhausted to the outside from the lid steam hole. When the rice cooking is completed and the temperature is maintained, the valve body closes the vapor hole of the catching portion by its own weight, so that the water of the cooked rice is prevented from being dissipated. In addition, at the time of care, the primary catching unit is separated from the lid by simply removing the heat sink unit, so that both can be integrally washed. Two
Since the secondary capturing section is opened by removing the primary capturing section, care by wiping or the like can be easily performed.

[0008] Further, the valve chamber is provided on a capturing section lid detachably provided on the primary capturing section, and the opening at the upper end of the valve chamber is provided with elasticity capable of expanding the diameter. More specifically, The upper end of the valve chamber is formed in a cylindrical shape, a detent preventing claw of the valve body is formed on the inner peripheral surface thereof, and two vertical slits are provided at the upper end, so that the elasticity in the radial direction can be increased. Can be adopted. With this configuration, the valve chamber can be elastically expanded in diameter and the valve body can be inserted into the valve chamber, so that a lid member for preventing the valve body from deviating is unnecessary.

Further, by adopting a configuration in which the valve chamber is formed so as to be offset toward the outer peripheral side of the capturing portion lid and the cover steam hole is formed as being offset toward the side opposite to the outer valve chamber, the entrance portion of the secondary capturing portion is adopted. Therefore, the distance between the valve chamber constituting the outlet port and the lid steam hole constituting the outlet portion is increased, and the effect of trapping the waste in the secondary catching section is increased.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1A shows a rice cooker main body 1.
3 shows a lid 3 which is attached by a hinge 2 so as to be freely opened and closed. The lid 3 is provided with a lid heater 4 therein, and a radiator plate set 5 for uniformly radiating the heat to the inside of the rice cooker main body 1 is detachably attached. The radiator plate set 5 includes a radiator plate 6 made of a metal plate, and a lid ring 8 attached to the outer peripheral edge of the radiator plate 6 by sandwiching a lid packing 7. A shallow recess 9 is provided on the upper surface of the heat sink 6, and the steam inlet 11 is provided in the recess 9.
Is provided. The primary capturing portion 12 is fixed to the concave portion 9 including the steam inlet 11 via the packing 13.

As shown in FIG. 2, the primary capturing section 12 includes a container section 14 and a capturing section lid 15 which is removably fitted to an opening at the upper end thereof. As shown in FIGS. 3 (a) to 3 (d), the container portion 14 has an inner container 17 having an open upper end and a closed lower end inside an outer peripheral wall 16, and an annular upper end wall 1 formed therein.
At 8 it is connected and integrated. A mounting collar 19 is provided on the outer circumference of the lower end portion of the outer peripheral wall 16, and is fixed to the recess 9 by the mounting collar 19. An introduction chamber 21 is provided in a part between the outer peripheral wall 16 and the inner container 17. The lower end of the introduction chamber 21 communicates with the steam inlet 11 described above. A vertical opening 22 is provided in a part of the inner container 17 in the introduction chamber 21, and an outer peripheral guide surface 23 of the introduction chamber 21 is connected to the opening 22 in an arc shape (see FIG. 3D). A plurality of engaging projections 24 are provided on the inner peripheral edge of the upper end of the inner container 17.

As shown in FIGS. 2 and 3, the catcher cover 15 is provided with a plurality of engaging portions 25 on the outer peripheral surface thereof for bayonet engagement with the engaging protrusions 24. Capturing unit lid 1
The upper surface of 5 is slightly inclined so that the central portion is recessed, and a diametrical knob 26 is provided on that surface. A cylindrical valve chamber 27 is provided at one end of the knob piece 26.

The above-mentioned valve chamber 27 protrudes above and below the trapping portion lid 15, and a trapping portion vapor hole 28 serving as a valve hole on the exit side of the primary trapping portion 12 is provided at the bottom thereof. As shown in FIG. 4 (c), the trapping portion steam holes 28 are provided with three slit portions 29, and the valve element 31 accommodated in the valve chamber 27 is placed on the trapping portion steam holes 28 and Is closed, this slit portion 29 is not closed. The valve element 31 is a solid or hollow lightweight ball formed of plastic, rubber, metal, or the like, and is lightly lifted by steam pressure during rice cooking, and does not substantially increase the internal pressure.

The upper half protruding from the upper surface of the valve chamber 27 is provided with two vertical slits 32 at two symmetrical positions. Is divided into semi-cylindrical parts. On the inner surfaces of these semi-cylindrical portions, departure prevention claws 33 of the valve body 31 are provided.
Is provided. When the valve element 31 is housed in the valve chamber 27, the escape preventing claw 33 is pushed outward and expanded by the above-described elastic deformation. When the pushing is completed, the original state is restored, and the deviation of the valve body 31 is prevented.

In addition, engaging claw pieces 34, 34 are provided at two places on the outer peripheral edge of the above-mentioned capturing portion cover 15 in a direction perpendicular to the knob piece 26. The engaging claw pieces 34, 34
It is used as a finger-hanging piece when removing the capturing unit cover 15.

The primary catching section 12 is inserted into a recess 35 (see FIG. 1 (b)) provided on the inner surface of the lid 3, and the upper end wall 18 is pressed against the internal steam passage packing 36. A seal is formed to form a secondary capturing section 37 between the capturing section lid 15 and the inner surface of the lid 3. The lower end of the secondary trapping portion 37 is formed at the lower end of the steam hole 2 of the supplementary portion of the valve chamber 27.
8 communicates with the primary capturing unit 12. The upper end is opened to the outside through a lid vapor hole 38 provided in the lid 3. The positional relationship between the lid steam hole 38 and the valve chamber 27 is set so that the distance therebetween is maximized by disposing the secondary trapping portions 37 so as to be offset toward the outer peripheral edge on the diameter. The longer this distance is, the better the effect of trapping the ashes is.
In this embodiment, the valve chamber 27 is provided at one end of the diametrical knob piece 26, and the lid steam hole 38 is provided at a position corresponding to the opposite end of the knob piece 26.

The steam generated by cooking rice is supplied to the steam inlet 1
1 (refer to FIG. 1 (b)), it moves along the path of the primary capturing section 12, the capturing section vapor hole 28, the secondary capturing section 37, and the lid vapor hole 38 in this order. The path forms the steam passage 40 of the lid 3 as a whole.

The configuration of the embodiment is as described above. Next, the operation will be described. When steam is generated inside the rice cooker main body 1 due to the progress of rice cooking, the steam is discharged to the outside through the steam passage 40 described above.
When the vapor pressure is low, the trapping section vapor hole 2
8, the valve body 31 does not move. However, when the vapor pressure becomes somewhat large, the valve element 31 floats and the trapping section vapor hole 28 is largely opened. Therefore, it is possible to prevent the internal pressure from increasing even if the valve element 31 is provided.

When the steam comes to mix with the nephew,
In the primary capturing section 12, as shown by an arrow A in FIG.
While the steam introduced along 3 moves along the inner peripheral surface of the inner container 17, gas-liquid separation, that is, separation of steam and ash is performed by the action of centrifugal force. In addition, the trapping section steam hole 28
The gas-liquid separation is also performed at the portion, and the separated wastewater is captured and retained inside the inner container 17. In addition, even if there is a bed passing through the trapping section steam hole 28, the bed is
While passing through the next catching section 37 and at the portion of the lid vapor hole 38, it is separated and captured, and is not discharged outside through the lid vapor hole 38. In the secondary catching section 37, the distance from the catching section steam hole 28 to the lid steam hole 38 is selected to the maximum, so that the effect of catching the ash is promoted.

When the rice cooking is completed and the state is shifted to the heat retaining state, the valve element 31 is put on the trapping portion vapor hole 28 by its own weight, and closes the trapping portion vapor hole 28 except for the slit portion 29. For this reason, since the inflow and outflow of air are restricted, the heat of the cooked rice is hardly deprived during the heat retention, and the dissipation of the humidity is also prevented.

The primary capturing unit 12 and the secondary capturing unit 37
In the rice cooker, the stored rice cake naturally moves downward during the heat retention and returns to the inside of the rice cooker main body 1. In this case, 2
The next catch portion 37 returns into the valve chamber 27 according to the inclined surface of the upper surface of the catch portion lid 15. Further, it returns to the primary capturing section 12 through the slit section 29 and finally falls on the cooked rice in the rice cooker main body 1.

When performing maintenance, the heat sink set 5
At the same time, the primary capturing unit 12 is also integrally removed from the lid 3 and is washed with water. Maintenance of the secondary capturing section 37 may be simple such as wiping.

[0023]

As described above, the present invention separates and captures the tonnage discharged to the outside through the steam passage in two stages, the primary capturing section and the secondary capturing section. There is an effect that the trapping effect of the slime is high and the spill-over does not easily occur.

Further, it has an excellent heat-retaining effect and a moisture-retaining effect during the heat retention, and has good careability. Further, by providing a valve chamber having a valve body departure prevention unit integrally with the capturing unit lid,
An increase in the number of parts can be prevented. Further, since the distance between the valve chamber forming the inlet portion of the secondary capturing portion and the lid vapor hole forming the outlet portion is set as large as possible, the effect of capturing the tongue in the secondary capturing portion can be improved.

[Brief description of the drawings]

FIG. 1A is a partial cross-sectional view of a lid part of an embodiment. FIG.

FIG. 2 is a partially exploded perspective view of the same.

FIG. 3 (a) is a plan view of a container portion of a primary capturing unit according to the first embodiment; FIG. 3 (b) is a cross-sectional view taken along line bb in FIG. d) Cross-sectional view taken along line dd in FIG.

FIG. 4 (a) is a plan view of a capturing unit cover of the primary capturing unit according to the first embodiment; FIG. 4 (b) is a sectional view taken along line bb in FIG. 4 (a); FIG. 4 is a sectional view taken along line cc in FIG. (D) (c) a partially enlarged sectional view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rice cooker main body 2 Hinge 3 Lid 4 Lid heater 5 Heat sink set 6 Heat sink 7 Lid packing 8 Lid ring 9 Depression 11 Steam inlet 12 Primary capture part 13 Packing 14 Container part 15 Capture part lid 16 Outer peripheral wall 17 Inner container 18 Upper end wall 19 Mounting flange 21 Introducing chamber 22 Opening 23 Outer peripheral guide surface 24 Engagement projection 25 Engagement part 26 Knob piece 27 Valve chamber 28 Capture part vapor hole 29 Slit part 31 Valve element 32 Vertical slit 33 Departure prevention claw 34 Engagement Claw piece 35 Concave part 36 Steam passage packing 37 Secondary catching part 38 Cover steam hole 40 Steam passage

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Yoichi Sakaguchi 1-20-5 Tenma, Kita-ku, Osaka Zojirushi Mahobin Co., Ltd. F-term (reference) 4B055 AA03 AA04 BA23 BA53 BA80 CA22

Claims (4)

[Claims] 1. A heat sink set is detachably attached to a lower surface of a lid of a rice cooker, and a steam passage is provided through the heat sink set and the lid to be opened to the outside of the rice cooker. In the rice cooker spillover prevention device provided with a rice catcher, the rice catcher is provided between a primary catcher provided on an upper surface of the heat sink set and the primary catcher and a lid steam hole. And a secondary trapping section provided in the steam passage of the above, wherein the primary trapping section and the trapping section vapor hole passing through the secondary trapping section are provided on the bottom of the valve chamber provided on the exit side of the primary trapping section, and rice cooking is performed. A valve body which floats at a low pressure accompanying the above is stored in the valve chamber. 2. The valve chamber according to claim 1, wherein the valve chamber is provided on a capping portion lid detachably provided on the primary capturing portion, and an opening at an upper end of the valve chamber is provided with elasticity capable of expanding the diameter. The device for preventing spillage of a rice cooker according to claim 1. 3. An upper end portion of the valve chamber is formed in a cylindrical shape, and a deviation preventing claw of the valve body is formed on an inner peripheral surface thereof.
3. An elasticity in a radially increasing direction is provided by providing two vertical slits at the upper end.
The device for preventing spillage of a rice cooker according to claim 1. 4. The valve chamber according to claim 1, wherein the valve chamber is formed so as to be offset toward an outer peripheral edge of the capturing portion lid, and the lid steam hole is formed as being offset toward an opposite side to the valve chamber. A device for preventing a rice cooker from spilling over according to the above description.