JP2000139730A - Rice polishing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce noise generated during polishing of rice and constitute a rice polishing machine so as to expose the external container from the main body to improve the design and make it easy to clean by forming the external container to have a closed end cylindrical shape and bring a gap between the inside face and the outside face. SOLUTION: This rice polishing machine is provided with an L-shaped rice polishing machine body 1, an external container 2 detachably attached onto the upper face of the L-shaped horizontal part of the body 1, and a motor 3 provided in an L-shaped vertical part of the body 1. The external container 2 has a closed end cylindrical shape and a double-structure in consideration of soundproofness, and the lower side is fixed to the body 1 by a Bajonett connection so as to screw therein. A rice polishing container 9 attached to the inside of the external container 2 is shaped so as to make the cross section smaller as it goes down, and made of a metallic netted material having finer meshes than rice grains. Blades 12 for polishing rice at the tip of a rotary shaft 4 is constituted of a nearly elliptic main body 13, a plurality of blades 14, and an air-blowing blade 15 sending air into the rice polishing container 9 by its rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a household rice mill, and more particularly to a rice mill having a desired degree of whiteness within a predetermined time.

[0002]

2. Description of the Related Art A household rice mill has been developed to meet the needs of storing rice in brown rice and eating it just before eating so as not to impair the taste of rice, or eating brown rice without completely whitening in consideration of nutrition. ing. Conventionally, as shown in Japanese Utility Model Publication No. 63-13793, this type of rice milling machine has a cylindrical outer container having a bottom and an eye which is installed in the outer container with an interval from the inner peripheral wall of the outer container. A milled cylindrical rice mill, a milling blade attached to a drive shaft provided on the bottom surface of the outer container and rotatable in the milling vessel, and a motor for rotating the drive shaft, the milling vessel It is known that brown rice to be fed is debranched by rotation of milled rice blades.

[0003]

By the way, in such a conventional apparatus, brown rice is stirred and convected in a rice milling vessel, so that friction between the rice and the rice or contact of the rice with the inner surface of the rice milling vessel causes the rice to be removed. Since the rice is bran, there is a problem that the noise at the time of rice polishing is large. 63-1
This is all the more so if the outer container is not housed in the main body as in No. 3793 and is exposed, which is extremely harsh and unpleasant.

[0004] The milled rice container is mounted in an outer container with a gap formed in order to receive the bran peeled from the brown rice into the milled rice.
Is rotated from the mesh portion of the milling container 9 into the outer container 2 and is deposited mainly on the inner bottom corner of the outer container 2. However, in the conventional apparatus, the milling container 9 and the outer container have similar shapes. However, there has been a problem that the debranched bran tends to return to the rice milling container. Therefore, a first object of the present invention is to reduce noise in milled rice, and a second object is to prevent debranched bran from returning to the milled rice container.

[0005]

SUMMARY OF THE INVENTION In order to achieve the first object, the present invention provides an outer container detachably attached to a main body and a predetermined distance from an inner surface of the outer container. A milling container that is installed and is made of a metal mesh material having finer stitches than rice grains, a rotating shaft protruding from the bottom of the milling container, milling blades that are attached to and detached from the rotating shaft, and a motor that rotationally drives the rotating shaft Wherein the outer container has a cylindrical structure with a bottom and a double structure in which a gap is formed between an inner surface and an outer surface.

In order to solve the second object, the present invention provides an outer container detachably attached to a main body,
A rice milling container that is installed at a predetermined distance from the inner surface of the outer container and is made of a metal mesh material having a finer stitch than rice grains,
A rotating shaft protruding from the bottom of the milling container, a milling blade attached to and detached from the rotating shaft, and a motor for rotating and rotating the rotating shaft. A rice milling machine characterized in that the distance from the inner surface of the outer container to the inner surface of the outer container in the state of being installed in the outer container increases as it goes downward.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to the drawings. FIG. 1 is a front internal sectional view showing a rice mill according to an embodiment of the present invention, and FIG. 2 is a plan internal sectional view. 1 is an L-shaped rice milling machine main body, 2 is an outer container attached to and detached from the upper surface of the L-shaped horizontal portion of the main body 1, and 3 is a motor 3 provided in the L-shaped vertical portion of the main body 1. The outer container 2 has a cylindrical shape with a bottom and has a double structure in consideration of soundproofing, and is attached to the main body 1 by a bayonet connection which is fixed by screwing the lower side. In addition, a cylindrical portion 10 is formed at the inner bottom of the outer container 2 and rises in a cylindrical shape, so that the bran peeled off by the milled rice can be stored in the outer container 2. In the gap between the outer container 2 having the double structure,
A sound absorbing material may be provided as necessary.

Reference numeral 9 denotes a rice milling container mounted in the outer container 2, which is formed of a metal net-like material having a shape such that its cross section becomes smaller as it goes downward, and having a mesh smaller than rice grains. On the outer bottom surface of the rice polishing container 9, there is provided a cylindrical mounting portion 11 that fits into a cylindrical portion 10 formed on the inner bottom portion of the outer container 2, and the rotating shaft 4 passes through the center of the mounting portion 11. At the lower end of the rotating shaft 4, an upper coupling 5 connected to the lower coupling 6 on the main body 1 side is attached. Although not shown, the rice mill 9 is attached to the outer container 2 by fitting a vertical rib provided on the attachment portion 11 side to a slit provided on the convex portion 10 side. When the rice polishing container 9 is mounted in the outer container 2 in such a configuration, the upper coupling 5 on the rice polishing container 9 side and the lower coupling 6 on the main body 1 are connected, and the rotation of the motor 3 is transmitted via the belt transmission unit. Communicated,
The rotation shaft 4 is rotated.

Reference numeral 12 denotes a milling blade attached to the tip of the rotary shaft 4, which is a substantially cylindrical main body 13 and extends horizontally from the lower side of the main body 13 toward the inner surface of the milling vessel 9, and the tip stands vertically. It is composed of a plurality of raised blades 14 and a blower blade 15 integrally formed on the upper end of the main body 13 and blowing air into the rice polishing container 9 by rotation. The blade 14 extends horizontally from the main body 13 to the inner peripheral surface along the bottom surface of the rice mill 9 and vertically raises the tip,
As shown in FIG. 2, it has a shape in which the side 14a preceding the rotation direction is bent inward. As a result, the brown rice put into the milling vessel 9 is carried inward while being rubbed against the inner wall of the milling vessel 9 by the side 14b that follows in the rotation direction of the blade 14, and is moved by the leading side 14a along the arrow line a. The rice is forcibly circulated as described above. Further, the blower blades 15 also rotate in conjunction with each other to blow air to the brown rice as shown by the arrow line b to prevent the temperature of the rice in the polished rice from rising.

Reference numeral 7 denotes a controller, which exposes an operation panel 8 on the upper surface of the main body 1 above it, and controls the motor 3 in accordance with an input operation on the operation panel 8. Reference numeral 16 denotes a lid that covers the upper opening of the outer container 2, and 17 denotes a handle provided outside the outer container 2. Either or both of the outer container 2 and the lid 16 are made of a transparent material such as plastic or glass. The inside of the outer container 2 can be observed from outside.

FIG. 3 is a block diagram showing a control system of the embodiment. Reference numeral 19 denotes a drive circuit for the motor 3, which includes a detection circuit 20 for detecting the number of revolutions of the motor 3, and a transmission circuit 21 for increasing / decreasing the current supplied to the motor 3 (that is, increasing / decreasing the duty ratio). The rotation number detection circuit 20 amplifies a current change appearing on the power supply waveform due to the contact between the brush and the coil accompanying the rotation of the motor, pulsates the change, and measures the time between pulses to obtain a relative rotation number. It is. The speed change circuit 21 changes the relative rotation speed by cutting off the current supplied to the motor 3 in a predetermined cycle unit and adjusting the ON time and the OFF time.

The operation panel 8 has a milling amount selection key 22 for setting the amount of rice to be milled, a milling degree selection key 23 for selecting a milling degree, and a start for starting and stopping the operation. A / stop key 24, a motor rotates only while inputting, and an additional milling key 25 for compensating for insufficient milling are provided. The milling amount is from 1 to 5 go, and the degree of milling is 3 minutes. You can choose between whitening and polishing white rice.

FIG. 4 is a table for setting the rice milling operation time stored in the memory 26 built in the controller 7. When milling rice, the time required for milling varies depending on the amount of brown rice and the degree of milling (the time required for milling is longer as the amount is larger and the degree of milling is higher).
The table shown in FIG. 4 is stored in the memory 26 built in the controller 7, and the rice selection key 22 and the milling degree selection key 2
The driving time of the motor is set according to the amount of milled rice and the degree of milling set in step 3. In this embodiment, the minimum value a (about 2 minutes)
Milling time is set in 20 steps up to the maximum value t (about 8 minutes).

The operation and use of the embodiment will be described below. Put the weighed brown rice into the milling container 9, select the desired milling amount and milling degree with the milling amount selection key 22 and the milling degree selection key 23 on the operation panel 8, and press the start / stop key 24. 12 rotates to start milling. As the blades 12 rotate, the rice at the bottom of the milling vessel 9 is pushed outward by the rotating blades 14 and the rice in the center of the milling vessel 9 flows down along the blade main body 13 instead. The convection occurs as in a, whereby the rice grains mainly rub against each other and the epidermis is peeled off. At this time, the exfoliated bran is blown into the outer container 2 from the mesh portion of the rice polishing container 9 by the rotational force of the rice polishing blades 12, and mainly to the inner bottom corner (portion b in FIG. 1) of the outer container 2. Although the rice is deposited, the outer container 2 is cylindrical while the rice container 9 has a hopper shape. Therefore, the clearance between the rice container 9 and the outer container 2 is secured in the portion where the rice is easily deposited, and the rice bran is concentrated. It is possible to prevent the bran from returning to the rice polishing container 9 even if the rice is accumulated.

When the rice polishing blades 12 rotate, the blower blades 15 integrally formed at the upper end thereof also move, and the rice cleaning containers 9 are rotated.
It rotates so as to blow air as indicated by arrow c. By this blowing, the temperature rise of the rice due to friction is alleviated, and it is possible to prevent a decrease in taste due to the milled rice. According to the experiment, it was demonstrated that the temperature can be lowered by about 2 to 3 degrees by the blowing blade 15.

In such a milling operation, the number of rotations of the motor 3 is constant regardless of the setting of the amount of milling and the degree of milling (preferably about 2000 to 2200 rpm).
Is controlled so that At this time, in the early stage of rice polishing, which is a state of brown rice, the rotational load is large and the motor speed is reduced, and as the polishing proceeds, the rotational load is reduced and the motor rotational speed is increased. Therefore, control is performed such that the rotational speed of the motor is detected at a predetermined timing, and the rotational speed is increased when the rotational speed is lower than a specified value, and is decreased when the rotational speed is increased.

When the milling time according to the set milling amount and milling degree elapses, the motor 3 is stopped to finish milling. Here, if the user wants to further refine the rice by checking the actual degree of rice polishing, the rice polishing operation is performed only while the rice is being input by pressing the additional rice polishing key 25, and the rice is observed through the transparent lid 11. It is only necessary to release the additional rice polishing key 25 at an appropriate place. When the milling is completed, the outer container 2 is removed from the apparatus main body 1 and then the milling container 9 is removed from the outer container 2, so that rice remains in the milling container 9 and bran remains in the outer container 2.
You can take out and use each one.

[0018]

According to the first aspect of the present invention, since the outer container has a double structure, noise generated in the milled rice can be reduced. Therefore, it is possible to configure the outer container in a shape exposed to the main body, thereby improving the design, making it easy to clean, and by using a transparent material, it is easy to confirm the degree of milling of the milling operation. It becomes easy to judge the timing of the operation.
According to the second aspect of the present invention, the hopper-shaped rice polishing container is used for the cylindrical outer container, so that a wide space can be secured especially at a place where the rice bran peeled off by the rice polishing easily accumulates. Can be prevented from returning into the milling container, and efficient milling can be performed.

[Brief description of the drawings]

FIG. 1 is a front internal sectional view showing a rice mill according to one embodiment of the present invention.

FIG. 2 is a plan internal sectional view of the rice mill.

FIG. 3 is a block diagram showing a control system of the embodiment.

FIG. 4 shows a memory 2 built in a controller 7 of the embodiment.
FIG. 8 is a diagram showing a table for setting the time of the rice polishing operation stored in No. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Outer container 8 Operation panel 9 Milling container 12 Milling blade

Continued on the front page (72) Inventor Takashi Oya 1825 Amemiya Amemiya, Koshoku, Nagano Pref. (72) Inventor Hiroshi Shimizu 1825 Amemiya, Oaza, Koshoku, Nagano Pref. F-term (reference) 4B053 BA11 BA14 BB02 BE05 BE14 BH02 BH06 BH13 BK01 BK02 BK21 BK36 BK60 BL03 BL05 BL20 4D043 AA03 DA03 DL04 DL10 FA10 HA05 HB08 JF02

Claims (2)

[Claims] 1. An outer container detachably attached to a main body, a rice mill container made of a metal net-like material provided at a predetermined interval from an inner surface of the outer container and having a stitch finer than rice grains, A rotating shaft protruding from the bottom of the milling container, a milling blade attached to and detached from the rotating shaft, and a motor for rotationally driving the rotating shaft, wherein the outer container has a cylindrical shape with a bottom and has an inner surface and an outer surface. Rice mill with a double structure that creates gaps in the rice. 2. An outer container detachably attached to a main body, a rice mill container made of a metal net-like material having a stitch finer than rice grains and provided at a predetermined distance from an inner surface of the outer container; A rotating shaft protruding from the bottom of the milling container, a milling blade attached to and detached from the rotating shaft, and a motor for rotating and rotating the rotating shaft, wherein the milling container has a shape that becomes smaller in cross section as it goes down, A rice milling machine characterized in that the distance from the inner surface of the outer container becomes wider as it is placed in the outer container.