JPH07106176B2 - Automatic rice washing rice cooker - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rice-washing rice cooker that automatically performs washing to rice cooking.

2. Description of the Related Art Conventionally, an automatic rice-washing rice cooker of this type has a structure as shown in Japanese Utility Model Publication No. 51-45989.

The configuration will be described below with reference to FIG.

As shown in the figure, a rice bin 2 for accommodating rice is provided at the bottom of the main body 1 of the rice cooker. On the upper part of the main body 1 above the rice bin 2, a rice cooking unit 3 that can be freely inserted and removed is provided. Then, a screw guide 4 is erected above the rice cooking unit 3 from the vicinity of the bottom surface 5 of the rice bin 2, and a cylindrical body 7 having a rotatable screw 6 therein, and an upper end portion of the cylindrical body 7 is used to cook the rice cooking unit 3. And a chute 8 projecting obliquely toward the rice serving as a rice weighing and conveying means. That is, the rice in the rice bin 2 is first measured and conveyed to the rice cooker 3 by the screw guide 4. Then, first, the washing water is stored in the water tank 13 provided at the upper end of the main body 1 from the water supply valve 14, and the rice cooker 3 is supplied through the water supply hose 15 extending below the water tank 13.
Water is supplied to the rice cooking pot 10 prepared for.

Next, in the opened rice cooking pot 10, the rotary blade 11 is lowered, the rice is washed by stirring, and then it is lowered together with the rotary blade 11.
One opening 16 is opened in the vicinity thereof and the dirty hose water is drained by a drain hose 12 equipped with a drain pump 17 at the other end. By repeating this water supply / drain multiple times, the rice wash is completed. After that, the cooking water is again stored in the water tank 13 from the water supply valve 14 and is then supplied to the rice cooking pot 10, and then the height of one opening 16 of the drain hose 12 is adjusted by the cooking water measuring means 9 to adjust the extra cooking water. Drain the water and complete the measurement of the cooking water. After that, the rice cooking was started by energizing the rice cooking heater 18 of the rice cooking section 3.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above-mentioned conventional automatic rice-washing rice cooker, the measurement of the cooking water is completed by adjusting the height of the opening 16 of the drain hose 12 by the cooking water measuring means 9 to drain the excess cooking water. Therefore, a pan with a large flat surface such as a large amount of rice cannot accurately measure the amount of cooking water, and as a result, delicious rice cannot be cooked.

In view of the above-mentioned conventional problems, the present invention has a first object to provide an automatic rice-washing rice cooker capable of supplying the cooking water so as not to disturb the measurement of the cooking water as much as possible. The second purpose is to improve the accuracy of measuring the cooking water.

Means for Solving the Problems In order to achieve the above first object, the present invention provides a bottomed cylindrical rice cooking pot, a heating body for heating the rice cooking pot, a weight measuring unit for the rice cooking pot, and An inner lid that closes an upper opening of the rice cooking pot, an outer lid that includes the inner lid and the rice cooking pot that can be opened and closed, a water supply unit that supplies water to the rice cooking pot through the outer lid and the inner lid, and the inner lid. Is provided with a plurality of openings for rectifying the water supply from the water supply means to the rice cooker.

In addition, in order to achieve the second object, a bottomed cylindrical rice cooker, a heating body for heating the rice cooker, and a rotor for transmitting the weight of the rice cooker to a load cell are rotatably supported by linear bearings. The measuring means and the rice washing means for rotating the rice cooking pot together with the rotor by the driving body through the drive pulley slidably engaged with the co-rotating plate provided on the rotor are configured.

Effect The present invention has the above-described configuration, and supplies the cooking water to be supplied to the rice cooking pot through the outer lid through the inner lid, and the water supply to the rice cooking pot is dammed once by the inner lid to rectify the water. By suppressing the ripples (vibration) of the cooked rice water, the weight of the cooked rice can be directly measured by the weight measuring means provided in the rice cooker. In addition, the rotor, which is also a rice washing means for rotating the rice cooker, is provided slidably together with the co-rotating plate that transmits the rotation, so that the rotation of the rotor is independent of the weight measurement of the rice cooker and the accuracy of the weight measurement is improved. Is something that can be done.

Embodiment One embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3. In the figure, a rice cooker 26 is provided in an open path on one side of a cabinet body 25 so as to be retractable. This rice cooker 26 is a rice cooker 27, and this rice cooker is also
A heating coil 28 for induction heating is provided to cover the outer periphery of the bottom surface of 27, and a lid 29 for closing the rice cooking pot 27 is provided.

Further, the lid 29 is provided with a steam hole 31 via a heat dissipation plate 32, and the rice transport cylinder 33 and the rice transport cylinder 33 are internally provided in the center thereof,
It is equipped with a valve 34 that can be opened and closed by raising and lowering. A vertically movable inner lid ring 35 is provided on the outer circumference of the rice transport cylinder 33 and is biased downward by a compression coil spring-shaped inner lid spring 36 interposed between the rice transport tube 33 and the heat dissipation plate 32. The inner lid ring 35 is detachably provided with an inner lid 38 by an inner lid packing 37.
The inner lid spring 36 presses the upper end of the rice cooking pot 27 to close the opening.

The inner lid 38 has a plurality of central holes 39 in its central portion and a plurality of elongated holes 4 circumferentially extending narrower than rice grains in the outer peripheral portion.
0, the outer periphery of the rice cooker 27 is erected on the inner surface of the upper end of the rice cooker 27, and the outer peripheral edge is extended with a gap between the upper edge of the rice cooker 27 and the upper edge of the rice cooker 27. A rib 41 that partially abuts the rice grain is provided, and the rice cooker pot 27 is arranged with a narrower gap than the rice grain except the rib 41.

In addition, a lid packing 42 is provided on the outer periphery of the lower surface of the lid 29, and the rice cooking section 26
An airtight seal is made with the outer periphery of the drainage groove 43 arranged on the outer periphery of the upper end of the rice cooking pot 27 stored in.

In addition, a rice bowl portion 44 is provided at the bottom of the cabinet body 25 so as to be retractable. This rice box 44 has a rice weighing section at the bottom of the rice box with an inclined bottom that descends toward the center.
45 are integrated.

On the cabinet body 25 side below the rice weighing unit 45, a hopper 46 is provided which opens to the rice weighing unit 45. Below the hopper 46, an ejector 49 that communicates with a pressure-feeding fan of a rice-conveying motor 47 provided at the upper portion of the cabinet body 25 and communicates with a pressure-feeding pipe 48 that extends downward is provided. It is configured to communicate with a transport pipe 50 that transports rice to the rice cooking pot 27 via the transport cylinder 33.

Further, on the cabinet main body 25 side above the rice cooking unit 26, a suction port 51 of a steam fan that is a means for discharging steam is opened around the steam hole 31 of the rice cooking unit 26, and the other is directly connected to the water supply. A water supply hole 53 at the tip of the water supply valve 52 is provided so as to face the steam hole 31 and penetrate substantially the center of the suction hole 51 of the steam fan.

Further, the rice cooking unit 26 includes a lower connector 55 that is detachably engaged with an upper connector 54 provided substantially in the center of the bottom surface of the rice cooking pot 27,
The lower connector 55 is provided at the upper end, and the lower end is provided with a cylindrical rotor 57 provided with a co-rotation plate 56 so as to hang down, and the outer periphery of the co-rotation plate 56 is erected in parallel with the rotor 57. Pin 58 and linear bearing slidably engaged with the sliding pin 58
Large pulley with 59 arranged around the circumference and rotating concentrically with rotor 57
60, and a rice washing motor 61 for rotating the rice cooking pot 27 through the large pulley 60, and a belt 63 for transmitting the rotation from the small pulley 62 included in the rice washing motor 61 to the large pulley 60. I am configuring.

The rotor 57 is slidably and rotatably supported by a large linear bearing 65 housed in a bearing housing 64. Bearing housing 64
Is equipped with a strain gauge 66a at the constricted part in the center of the 2
One end of a series of load cells 66 is fixed, and this load cell 66
The other end of the load cell 66 is provided with a support plate 67 penetrating the rotor 57 and cantilevered toward one end of the load cell 66. Also this support plate
The thrust bearing 68, which engages with the large diameter step of the rotor 57, is provided on the upper surface of the 67. That is, the rotor 57 is rotatably and vertically slidably supported by a large linear bearing 65, a downward load is supported by a thrust bearing 68, and the rotor 57 moves up and down following the weight change in the rice cooker 27. A pan weight sensor 69 that measures the amount of strain of the load cell 66, which is the amount of descending rotor 57, is configured.

The operation of the above configuration will be described below.

First, rice is prepared in the rice bowl portion 44, and a desired amount of cooked rice or the like is keyed in with an operation portion (not shown), and a start switch (not shown) is inserted to start.

Then, first, the rice weighing unit 45 operates the number of times according to a desired amount of cooked rice to measure the rice to be cooked, and drops the rice into the hopper 46 sequentially. At the same time, the rice transport motor 47 is started, and the hopper 46 ejects the ejector 49, the pressure feed pipe 48, and the transport pipe 5.
0, Rice is conveyed into the rice cooking pot 27 through the rice conveying cylinder 33.

Here, in the rice cooker 26, the rice cooker 27 descends together with the inner lid 38 due to the weight of the rice conveyed to the rice cooker 27, and the upper connector 54,
The load cell 66 is displaced through the lower commutator 55 and the rotor 57, and data of this displacement amount is transmitted to a control unit (not shown) to measure the weight of rice.

Next, the water supply valve 52 is opened, and first the washing water is supplied to the rice cooking pot 27 from the water supply hole 53 through the steam hole 31. This supplied water is
Once stored on the upper surface of the inner lid 38, water is sequentially rectified from a plurality of long holes 40 provided in the inner lid 38 and dropped into the rice cooking pot 27. The water supplied in this rice cooker 27 has an inner lid 38
Including the water temporarily stored in, the displacement amount data of the load cell 66 is transmitted to the control unit in the same manner as the above-mentioned measurement of the weight of rice, and the weight of water is sequentially measured. Here, the control unit feeds back the amount of the washing water set according to the amount of rice weighed previously, and controls the opening / closing of the water supply valve 52 to measure the washing water.

Next, the rice washing pan 61 is rotated to rotate the rice washing motor 61 forward and backward to rotate the rice cooking pot 27 to wash rice. Further, the rotation of the rice cooking pot 27 is accelerated, and the washing water is discharged into the drain groove 43 of the upper frame 30 through the gap between the upper end of the rice cooking pot 27 and the inner lid 38 by the centrifugal force caused by the rotation.

After the rice washing process by supplying water, rotating the pot, and draining the washing water several times in the rice cooking pot 27, the water supply valve 52 is opened again, and the cooking water is cooked in the same manner as the washing water according to the desired amount of rice. The weight sensor 69 directly supplies and measures water in the rice cooking pot 27. When the water supply for cooking water is completed, the heating coil 28
The energization is started and rice is cooked.

As described above, according to the present embodiment, the inner lid 38 is provided with a plurality of long holes 40 for temporarily storing water to be absorbed on the upper surface of the inner lid 38, and then rectifying the water and dropping it into the rice cooker 27. By adjusting the length of the water supply valve 52, the waviness (ripple) caused by the water sequentially absorbed from the water supply valve 52 is reduced by the small amount of water temporarily stored in the inner lid 38 (much less than the total amount of water). As a result of preventing its occurrence and preventing its waviness,
By speeding up the water supply rate, and by using a pan weight sensor 69 equipped with a displacement type load cell 66 via a rotor 57 that is also a rotary drive shaft of the rice cooking pot 27, the rice washing water / cooking water is cooked directly.
With 27, it is possible to measure with high precision.

EFFECTS OF THE INVENTION As is clear from the above description of the embodiment, according to the automatic rice washing rice cooker of the present invention, a bottomed cylindrical rice cooker, a heating body for heating the rice cooker, and a weight measurement of the rice cooker Means, an inner lid that closes the upper opening of the rice cooking pot, an outer lid that includes the inner lid and the rice cooking pot that can be opened and closed, and a water supply means that supplies water to the rice cooking pot through the outer lid and the inner lid. By providing the inner lid with a plurality of holes for rectifying the water supply from the water supply means to the rice cooking pot, the inner lid rectifies the water for washing and cooking water from the water supply means. It is possible to measure the amount of water supply directly with a rice cooking pot while suppressing the occurrence of waviness, and to accurately and accurately measure the cooking water.

Further, the present invention provides a bottomed cylindrical rice cooker, a heating body for heating the rice cooker, a weight measuring unit in which a rotor for transmitting the weight of the rice cooker to a load cell is rotatably supported by a linear bearing, and the rotor. Rotation of the rice cooker by comprising a rice washing means for rotating the rice cooker together with the rotor by a driving body such as a motor via a drive pulley slidably engaged with the co-rotating plate The weight in the rice cooker is reliably transmitted to the load cell via the rotor, which is also the axis, and more accurate weighing can be performed, making it possible to cook more delicious rice than before.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an upper portion of an automatic rice-washing rice cooker according to an embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of the automatic rice-washing rice cooker, and FIG. 3 is a pot weight sensor section of the automatic rice-washing rice cooker. FIG. 4 is a cutaway plan view of a main part of FIG. 4, and FIG. 4 is a vertical sectional view of a conventional rice-washing rice cooker. 26 …… rice cooker, 27 …… rice cooker, 28 …… heating coil (heater), 29 …… lid (outer lid), 38 …… inner lid, 40 …… long hole (open hole), 52 …… Water supply valve (water supply means), 53 …… water supply hole (water supply means), 56 …… co-rotating plate, 57 …… rotor, 59 ……
Linear bearing, 60 …… Large pulley (driving pulley), 61 …… Rinsing motor (driving body), 62 …… Small pulley (driving pulley), 63 …… Belt (driving body), 65 …… Large linear bearing (linear) Bearings), 66 …… load cell, 69 …… pan weight sensor (weight measuring means).

Claims (2)

[Claims] 1. A bottomed tubular rice cooker, a heating body for heating the rice cooker, a weight measuring means for the rice cooker, an inner lid for closing an upper opening of the rice cooker, and the inner lid together with the above. An outer lid having a rice cooking pot openable and closable, a water supply means for supplying water to the rice cooking pot through the inner lid through the outer lid, and a plurality of water rectifying water supplies from the water supplying means to the rice cooking pot for the inner lid. Automatic rice washing rice cooker with open holes. 2. A bottomed tubular rice cooker, a heating element for heating the rice cooker, a weight measuring means in which a rotor for transmitting the weight of the rice cooker to a load cell is rotatably supported by a linear bearing, and the rotor. An automatic rice-washing rice cooker comprising rice-washing means for rotating the rice-cooking pot together with the rotor through a drive pulley slidably engaged with the co-rotation plate provided in FIG.