JP5495840B2 - rice cooker - Google Patents

Description

  The present invention relates to a rice cooker, and more particularly to a rice cooker equipped with a centrifugal gas-liquid separation mechanism.

  A conventional rice cooker includes a steam discharge device that discharges steam inside the rice cooker to the outside during rice cooking, and the steam port unit of this steam discharge device has a steam port case having a valve mechanism with an open top surface, A steam port cover is provided at the upper surface opening of the steam port case, and a steam hole is formed in the upper surface of the steam port cover at a portion displaced laterally from a position directly above the valve mechanism. In addition, a plurality of barriers are provided inside the steam port unit, thereby weakening the momentum of the steam and the bean that flows into the unit, preventing the beef from being ejected from the steam hole, and only the steam. It discharges out of the machine body (see, for example, Patent Document 1).

Japanese Patent No. 3820541 (pages 4 to 5, FIGS. 3 to 4)

  According to the rice cooker of Patent Document 1, it is necessary to lengthen the flow path from the steam inlet to the steam discharge hole, and when increasing the input power of the heating means, it is necessary to ensure a longer flow path. there were. For this reason, the ratio of the volume which a steam port unit occupies with respect to the rice cooker main body became large, and the restrictions on design and design were large.

The present invention has been made in order to solve the above-described problems. Even if the input power to the heating means is large and the duration is long, the present invention is small and reliably separates the steam and the bowl, and is designed and designed. It aims at obtaining the rice cooker provided with the steam port unit with few restrictions.

A rice cooker according to the present invention includes a rice cooker body, a lid that covers an upper opening of the rice cooker body, an inner pot that is detachably accommodated in the rice cooker body, and heating that heats the inner pot. a means, provided in said lid, and a vapor outlet unit for discharging to the outside of the cooker body steam generated during cooking from the kiln, and
The steam outlet unit includes a cylindrical passage through which vapor containing your viscosity therein, an inlet of the vapor containing the opened Oneba at a position shifted from the cylinder center of the cylindrical channel, the cylindrical flow A spiral partition plate that is disposed substantially perpendicular to the direction of travel of the steam including the rice cake inside the passage, and that separates the steam and the rice cake flowing in from the inlet by centrifugal force, and is generated by the action of the partition plate. steam discharging Oneba outlet and the steam discharges the Oneba by separating the vapor in the traveling direction of the cylindrical flow path with the Oneba by centrifugal force to separate in a radial direction of the cylindrical flow path an outlet, in which example Bei separation mechanism having a.

  Since it has a separation mechanism that separates the rice balls in the radial direction of the flow channel by centrifugal force in the direction of travel of the steam including the powder in the flow channel, and separates the steam in the direction of travel of the flow channel, Even if the input power is large and the duration is long, it is possible to reliably separate steam and rice balls, and the size can be reduced, and there are few design and design restrictions.

It is a longitudinal cross-sectional view of the rice cooker which concerns on one embodiment of this invention. It is a perspective view of the cutting state of the steam port unit of FIG. It is a disassembled perspective view which shows the principal part of the steam port unit of FIG. It is a perspective view which shows the other example of the cutting state of the steam port unit of FIG.

  In FIG. 1, the rice cooker body 1 has an opening at the top, and the opening is opened and closed by a lid 10. An inner lid 11 is provided on the inner side of the lid body 10, and a peripheral portion of the inner lid 11 is provided between the upper surface of the inner hook 2 (described later) and the lid body 10 when the lid body is closed. An annular fixed frame (seal rubber) 12 that seals the opening of the inner hook 2 is provided so that steam does not leak to the outside.

At the upper part of the inner lid 11 of the lid body 10, there is provided a steam port unit 20 having a centrifugal bead separation mechanism (centrifugal gas-liquid separation mechanism) that supplements and separates the bean mixed in the steam. It has been.
This tough separation mechanism is provided with a flow path (described later) inside, and when steam containing a goblet entering from the guide tube 22 provided in the reservoir recess 21 travels inside the flow path, it is subjected to centrifugal force. The stick is separated, and the stick is discharged from the discharge port (described later) and returned to the inner pot 2, the steam is discharged from the steam discharge port (described later), and discharged to the outside through the steam hole 27 on the top of the lid body 10. is there. The direction of inflow and outflow of the separation mechanism is horizontal in order to suppress the product height. Note that the inflow and outflow directions of the separation mechanism may be perpendicular to the product (ground).

  The rice cooker main body 1 is detachably accommodated in an inner pot 2 having a bottomed cylindrical shape into which water, rice and the like are opened and having an open top surface, and is cooked by heating by a heating means 3 such as an electromagnetic induction coil. It has become. When the lid 10 of the rice cooker is closed, the fixed frame 12 at the peripheral edge of the inner lid 11 is brought into close contact with the flange 2 a provided on the outer periphery of the upper end of the inner pot 2.

The separation mechanism will be described in detail with reference to FIGS.
In the middle of the separation mechanism, for example, a flow path 23 (hereinafter referred to as a cylindrical flow path) through which steam including a generally composed cylindrical case passes is provided. This cylindrical flow path 23 forms a substantially closed space (internal space) with respect to the inside of the separation mechanism, and includes a steam inlet 22a (outlet of the guide tube 22), A steam outlet 24 and a generally outlet 25 located on the opposite side of the inlet 22a, that is, on the downstream side, are provided, and constitute a flow path case A (see FIG. 3). The cylindrical flow path 23 may share a member constituting the internal space of the separation mechanism if a part of the cylindrical flow path 23 is used. Alternatively, if the entire cylindrical flow path 23 is used, the internal space of the separation mechanism may be shared. You may make it form with the member to comprise.

  The flow path case A that forms the cylindrical flow path 23 has a cross-sectional area that increases from the inlet 22a side toward the steam outlet 24 side, and the speed of the steam stick increases as the cross-sectional area increases. Slow down so that the rice ball tends to fall down.

Inside the cylindrical flow path 23, a spiral partition plate (spiral wing) 26 that is substantially orthogonal to the traveling direction of the steam including the tortoise is provided, and the spiral flow path Is forming. The mixed fluid of steam and rice is separated into steam and rice by a swirling flow. The spiral partition plate 26 is made of an elastic material such as silicon rubber. Thus, on the inflow port 22a side, a spiral partition portion B in which the upstream side of the flow path case A is closed and the spiral partition plate 26 is formed on the downstream side is fitted (see FIG. 3). .
Instead of the spiral partition plate 26 as described above, as shown in FIG. 4, a shaft 30 may be provided at the center of the cylindrical channel 23 in the channel direction. In this case, the cross-sectional shape of the shaft 30 is preferably a substantially conical cylindrical shaft whose diameter decreases from the inlet 22a toward the downstream direction.

  The inlet 22a (guide cylinder 22) to the cylindrical flow path 23 is shifted to one side from the center of the flow path case A of the cylindrical flow path 23, that is, substantially tangent to the inner wall of the flow path case A. It is provided at a position that becomes the direction. In this way, the steam bed is forcibly swirled, and the steam and bed are separated by the centrifugal force.

A steam discharge port 24 is provided at the substantially central portion on the outlet side (downstream side) of the cylindrical flow path 23, and a general discharge port 25 is provided on the lower outer peripheral side on the downstream side of the cylindrical flow path 23. It has been. The steam containing the beak is swirled by its centrifugal force, and the beak is separated radially outward of the cylindrical flow path 23, and the steam is separated into the central portion of the cylindrical flow path 23. It discharges from the outlet 24 and the outlet 25.
The steam discharge port 24 is provided at the substantially central portion on the outlet side of the cylindrical flow path 23. However, the vapor discharge port 24 may be shifted to the opposite side of the discharge port 25 as long as it is on the radially outer side of the central portion. In this case, the rotation of the steam is delayed at the steam discharge port 24, so that the steam is easily discharged.
In addition, the exhaust outlet 25 is provided outside the swirl flow to separate the nebula. In this case, the cross-sectional shape of the space portion in the case of the exhaust outlet 25 portion provided at the lower outer portion of the swirl flow is discharged. The diameter may be increased toward the outlet 25 side. In particular, in the case of a cylindrical flow path, the cylindrical cross-sectional shape can be increased toward the discharge port side to form a partial scroll shape.

The steam outlet 24 provided on the outlet side of the cylindrical flow path 23 is configured as an inlet portion of a steam outlet cylinder 24a formed in a cylindrical shape, from the cylindrical flow path 23 to the vicinity of the steam hole 27 which is a steam outlet. It is extended. By doing so, it is possible to prevent the separated vapor from remixing with the rice cake that has flowed out of the cylindrical flow path 23. Although the steam outflow cylinder 24a extends to the vicinity of the steam hole 27 on the downstream side thereof, it can also be directly connected to the steam hole 27, and in this way, it is remixed with the rice cake that flows out to the outside. Can be prevented.
In addition, the upstream side of the steam outlet 24, that is, the upstream side of the steam outlet cylinder 24a extends in a cylindrical shape inside (upstream side) of the cylindrical flow path 23, so that the separated rice bowl does not flow out from here. It plays the role of "return".
Thus, the steam discharge part C provided with the steam outflow cylinder 24a is fitted to the outlet side of the cylindrical flow path 23 (see FIG. 3).
In the above description, as shown in FIG. 3, the separation mechanism is shown as being configured by fitting three parts of the flow path case A, the spiral partition B and the steam discharge C. The spiral partition B and the steam discharge part C may be integrally formed.

Next, the operation of the rice cooker including the steam port unit 20 having the above-described separation mechanism will be described.
When the inner pot 2 containing water and rice is accommodated in the main body 1 of the rice cooker, the lid 10 is closed, and the power switch provided in the operation unit is turned on, the inner pot 2 is heated by the action of the electromagnetic induction coil 3. When the water in the inner pot 2 boils, steam containing a beef is generated. At this time, since the internal pressure of the inner pot 2 is rising, the on-off valve 28 of the steam port unit 20 is pushed up to close the return hole 28a. The tube 22 is led into the cylindrical flow path 23 of the separation mechanism.

  Vapor including a bowl that exits the guide tube 22 flows into the flow channel from the tangential direction of the inner wall of the cylindrical flow channel 23, and forces the spiral flow channel along the spiral partition plate 26. And is separated into steam and roughly by the centrifugal force. Then, the steam passes through the steam outlet tube 24a from the steam outlet 24 and is discharged from the steam hole 27 to the outside of the machine. On the other hand, the rice balls are discharged from the rice outlet 25 and stored in the pool recess 21.

  After that, when the heating is stopped and the internal pressure of the inner pot 2 is lowered, the on-off valve 28 is lowered by its own weight and the weight of the toy and opens a toy return hole 28 a provided on the bottom surface of the reservoir recess 21. As a result, the rice cake collected in the accumulation recess 21 falls into the inner hook 2 from the food return hole 28a. When the rice ball returns to the rice in the inner pot 2, the ingredients of the deliciousness contained in the rice ball are given to the rice, and it is possible to cook a delicious and sticky rice.

  The steam port unit 20 of the rice cooker according to the present invention has a flow path 23 through which steam including the rice cake flowing in from the inlet 22a is passed, and centrifugal force is generated in the traveling direction of the steam containing the rice cake inside the flow path 23. Since the separation mechanism for separating the steam in the radial direction of the flow path 23 and separating the steam in the traveling direction of the flow path 23 is provided, even if the input power to the heating means 30 is large and the duration time is long, it is ensured. In addition, steam and rice balls can be separated, and downsizing is possible, and there are few design and design restrictions.

  DESCRIPTION OF SYMBOLS 1 Rice cooker main body, 2 Inner pot, 3 Electromagnetic induction coil (heating means), 10 Cover body, 20 Steam port unit, 22 Guide cylinder, 22a Inlet, 23 Cylindrical flow path (flow path), 24 Steam exhaust port, 24a Steam outlet cylinder, 25 general outlet, 26 spiral partition plate, 27 steam hole (exit for discharging steam out of the machine), 30 cylindrical shaft, A channel case, B spiral partition , C Steam exhaust section.

Claims (15)

A rice cooker body, a lid that covers the upper opening of the rice cooker body, an inner pot that is detachably accommodated in the rice cooker body, a heating means that heats the inner pot, and a lid provided on the lid is has a vapor outlet unit for discharging to the outside of the cooker body steam generated during cooking from the kiln, and
The steam outlet unit includes a cylindrical passage through which vapor containing your viscosity therein, an inlet of the vapor containing the opened Oneba at a position shifted from the cylinder center of the cylindrical channel, the cylindrical flow A spiral partition plate that is disposed substantially perpendicular to the direction of travel of the steam including the rice cake inside the passage, and that separates the steam and the rice cake flowing in from the inlet by centrifugal force, and is generated by the action of the partition plate. steam discharging Oneba outlet and the steam discharges the Oneba by separating the vapor in the traveling direction of the cylindrical flow path with the Oneba by centrifugal force to separate in a radial direction of the cylindrical flow path cooker, characterized in that example Bei separation mechanism having a discharge port.   The rice cooker according to claim 1, wherein the spiral partition plate is made of an elastic material. A rice cooker body, a lid that covers the upper opening of the rice cooker body, an inner pot that is detachably accommodated in the rice cooker body, a heating means that heats the inner pot, and a lid provided on the lid A steam outlet unit for discharging steam generated during rice cooking from the inner pot to the outside of the rice cooker body,
The steam outlet unit includes a cylindrical passage through which vapor containing your viscosity therein, an inlet of the vapor containing the opened Oneba at a position shifted from the cylinder center of the cylindrical channel, the cylindrical flow A substantially cylindrical shaft that is disposed in the direction of travel of the steam including the meander inside the passage and separates the steam and the meander that have flowed in from the inlet by centrifugal force, and the meander by the centrifugal force of the cylindrical flow path. comprising a separation mechanism having a steam discharge port for discharging the Oneba outlet and the steam discharges the Oneba by separating the vapor in the traveling direction of the cylindrical flow path with separating radially
The rice cooker according to claim 1, wherein the substantially cylindrical shaft is reduced in diameter toward a traveling direction of the steam including the rice cake in the cylindrical flow path.   The rice cooker according to any one of claims 1 to 3, wherein a flow path for separating steam containing the rice bowl forms a substantially closed space.   The rice cooker according to claim 4, wherein the closed space is a substantially cylindrical space.   The rice cooker according to claim 4 or 5, wherein a cross-sectional area of the closed space increases from the inflow port toward the steam discharge port side.   The rice cooker according to any one of claims 1 to 6, wherein an inflow position of the steam including the rice cake in the flow path is set to a substantially tangential direction of the inner wall of the flow path.   The rice cooker according to any one of claims 1 to 7, wherein a discharge port is provided in the radial direction of the flow path.   The rice cooker according to claim 8, wherein a discharge port is provided at a lower portion outside the swirl flow in the radial direction of the flow path.   The rice cooker according to claim 9, wherein a cross-sectional shape of a space portion in the case of an approximately outlet provided at an outer lower portion of the swirling flow is increased toward the outlet.   The rice cooker according to any one of claims 1 to 10, wherein the steam discharge port is provided at a substantially central portion in a radial direction of the flow path.   The rice cooker according to any one of claims 1 to 10, wherein the steam outlet is shifted to one side from a radial center of the flow path.   The rice cooker according to any one of claims 1 to 12, wherein a steam discharge port is provided on the downstream side of the flow path, and the steam discharge port is extended to the vicinity of an outlet for discharging the steam to the outside of the machine.   The rice cooker according to claim 13, wherein the steam discharge port is extended in a cylindrical shape on the flow path side.   The rice cooker according to any one of claims 1 to 14, wherein a flow path for separating steam containing rice balls is disposed substantially horizontally.

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