JP2001000874A - Rice milling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform rice milling with the proper number of revolutions and time meeting the rice quantity and the milling degree by providing a rice quantity judging means and a rice milling degree setting control and controlling the number of revolutions and operating time of a motor part by a motor control means according to the output judged by the rice quantity judging means and the preset value of the rice milling degree setting control. SOLUTION: In the case of applying to a rice milling machine 21 used in a home and provided with a percent pounding function and a polishing function of unpolished rice, after the rice milling machine 21 is connected to a commercial power source and the required quantity of rice is put in a rice milling hopper 23 and the upper opening is covered with a cover member 29, the favorite rice hulling degree is set by a rice hulling degree setting control and an operating switch is pressed to start rice hulling. When the rice hulling is started, a rice quantity judging means determines the hulled rice quantity, and according to the output value of the hulled rice quantity and the preset value of the rice hulling degree setting control, the number of revolutions of a blade member 26 and hulling time are adjusted to perform rice hulling and to house rice bran and rice in a rice bran vessel 30 and in a polished rice vessel 31 respectively. In this way, rice hulling can be automatically performed with the proper number of revolutions and time meeting the rice quantity and rice hulling degree.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice mill having a function of dividing and milling brown rice mainly used at home.

[0002] In the text, all the processes of dividing and whitening are called rice polishing.

[0003]

2. Description of the Related Art In recent years, with the desire for gourmet food and healthy food, there has been an increasing demand for brown rice to be polished to a desired degree, cooked freshly cooked rice, and eaten at home.

Conventionally, this kind of rice mill has been disclosed in Japanese Unexamined Patent Publication No. 1-199.
The configuration is as shown in JP-A-652-652, and will be described with reference to FIG.

[0006] As shown in FIG. 6, a rice mill 1 has a rice mill basket 3 inside a cylindrical container frame 2, and a stirring blade member 4 inside it.
Are arranged, and the upper part thereof is covered by the lid member 5. Except for the center of the bottom surface, the entire periphery of the milling basket 3 has a net cage shape, and a rotating shaft 7 is rotatably supported at the center of the bottom surface via a bearing 6. Is fixed to a blade member 4, and a joint 8 receiving a driving force of a motor described later is fixed to a lower portion. A motor 9 is provided at the lower part of the rice polishing machine 1, and the motor shaft 9 is provided.
A joint 8 which is detachably engaged with the rotating shaft 7 is fixed to the tip end of a. Numeral 10 is a bran container for storing the cut bran. On the front surface of the rice mill 1, a rotation speed knob 11 for setting the rotation speed of the motor 9 and a rice milling time knob 12 for setting the rice milling time are provided so that the user can set the degree of milling and the rotation speed. It has become.

In the above arrangement, the user puts in a required amount of rice, sets a rotation speed corresponding to a desired degree of milling with the rotation speed knob 11, and then mills rice according to the degree of milling and the amount of milling rice to be milled. The time is set with the rice polishing time knob 12. After the opening is covered with the lid member 5, when the motor 9 is driven, the blade member 4 rotates at a set speed, and the rice is vigorously stirred by the rotating blades 4a. The layer is scraped and milled, and when a set time is reached, the motor 9 stops and the milling ends. The bran shaved off during the milling passes through the mesh of the milling basket 3 and falls into the bran container 10.

[0007]

However, in such a conventional rice mill, the user calculates the rotation speed and the milling time of the blade member from the amount of rice milling and the degree of rice milling, and sets each of them by a knob. Must be set.
This setting is not only troublesome, but also requires long experience and knowledge about rice polishing, and is not set properly in ordinary households. For this reason, there is a problem that rice is excessively polished and cracked, or the starch layer of the polished rice is removed and cooked and cooked, resulting in rice with a rough surface and reduced taste, without reaching a predetermined rice polishing degree. Was.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to obtain a rice mill capable of producing the best rice without troublesome settings.

[0009]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a rice hopper having a rice bran removal portion formed in a porous state, and a rice hopper which is rotated in a horizontal direction at the bottom of the rice hopper. A blade member for stirring, a motor unit for rotating the blade member, a motor control unit for controlling the number of rotations of the motor unit and rice milling time, a rice amount determination unit for determining the rice amount in the rice hopper unit, and rice polishing start and stop. And a milling degree setting knob for setting the degree of milling.The motor control means adjusts the rotation speed and operating time of the motor unit according to the output determined by the rice quantity determining means and the set value of the milling degree adjustment knob. And milling at an appropriate rotation speed and time according to the amount of rice and the degree of milling.

[0010]

According to the first aspect of the present invention, it is possible to mill rice at an appropriate rotation speed and time according to the amount of rice and the degree of milling.

According to the second aspect of the present invention, it is possible to appropriately mill rice in accordance with fluctuations in commercial power.

According to the third aspect of the present invention, it is possible to detect the current flowing in the motor after the start of the rice polishing and to make an automatic determination.

According to the fourth aspect of the present invention, it is possible to set accurate conditions according to the number of rotations of the blade member after the start of rice polishing.

[0014]

(Embodiment 1) Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

First, the overall configuration of a rice mill will be described with reference to FIG. In FIG. 1, a rice polishing machine 21 is provided with a rice polishing hopper 23 inside a case 22, and a rotating shaft 25 is rotatably supported at a central portion of a bottom surface thereof via a bearing portion 24. The agitating blade member 26 is detachably disposed and rotates together with the rotating shaft 25. A pulley A 28 receiving a driving force of a motor 27 described below is fixed to a lower portion of the case 22, and a lid member 29 covers an upper opening of the case 22. The rice hopper 23 has a rice bran removing part 2 formed in a part thereof in a circumferential direction.
3a, and a white rice discharge opening 23b in another portion in the circumferential direction.
And an openable and closable white rice discharge door 23c. Also,
A bran container 30 having an opening covering the bran removing portion 23a is detachably provided outside the bran removing portion 23a of the rice polishing hopper 23, and a white rice discharging opening 23b is provided outside the white rice discharging door 23c.
A white rice guide 23 d having an opening for covering rice is provided, and the rice is guided to the white rice container 31. Motor 2 is provided at the bottom of case 21.
7, a pulley B32 is fixed to the tip of the motor shaft 27a, and a pulley A2
8 and a belt 33 to transmit the power of the motor 27 to the blade member 26. The number-of-rotations detecting means 34 is provided below the rotating shaft 25, and the number of rotations of the detecting rib 36 protruding from the rotating shaft between the opposed optical sensors 35 is determined by the number of rotations.
The rotation number of the blade member 26 mounted on the rotation shaft 25 is detected.

On the front surface of the case 22, an operation switch 37 and a rice polishing degree setting knob 38 are provided as operation parts shown in FIG. 2, so that the start and stop of rice polishing and the setting of the rice polishing degree can be performed. . Inside the case 22, a control circuit section 39 electrically connected to the operation switch 37, the rice polishing degree setting knob 38 and the motor 27 is arranged. The control circuit unit 39 includes a frequency detection unit 40 that detects the frequency of the commercial power supply, and a voltage detection unit 4 that detects the voltage of the commercial power supply.
1 and a rice detecting means 43 comprising a current detecting means 42 for detecting a motor current, and a motor controlling means 44 for controlling the number of rotations and the operating time of the motor 27.

Next, the operation of the rice mill configured as described above will be described.

When the rice mill 21 is connected to a commercial power source,
After a required amount of rice is put into the rice polishing hopper 23, the upper opening is covered with the cover member 29, the desired rice polishing degree is set by the rice polishing knob 38, and the operation switch 37 is pressed to start rice polishing. When the rice polishing is started, the rice quantity determining means 43
The amount of the polished rice is determined, and the motor control means 44 controls the blade member 2 according to the output value of the polished rice and the set value of the polished rice adjusting knob 38.
The rice is milled at a rotation speed of 6 and milling time, and the bran is stored in a bran container 30 and the rice is stored in a white rice container 31.

Next, the control flow will be described with reference to FIG.

FIG. 3 is a flowchart showing the flow of the control. Step 11 in the initial state (power-on state)
Then, the frequency of the commercial power supply is detected, and the detection result is sent to the rice quantity determination means 43. At step 12, the voltage of the commercial power supply is detected and the detection result is sent to the rice quantity determination means 43. Power switch 3 in step 13
When the rice is started by 7, the current detecting means 42 as the rice quantity determining means detects the current of the motor 27 in step 14. In step 15, the rice quantity determining means 4
Reference numeral 3 determines the amount of rice from the frequency and voltage signals of the commercial power supply and the motor current value just detected. In step 16,
From the signal of the rice milling knob 38 and the signal of the rice amount judging means 43 set by the user, the rotation speed and milling time of the blade member 26 which are optimal for the rice milling amount and milling degree are determined.
7 is controlled. After a predetermined time has elapsed in step 17, the rice polishing is stopped.

The rice quantity determining means will be described with reference to FIG.

FIG. 4 is a graph showing the relationship between the amount of rice and the motor current value when the motor 27 is operated at a predetermined power. When the amount of rice increases, the load on the rotation of the blade member 26 increases, and a high torque is required for the motor 27. As a result, the motor current value increases. By utilizing this phenomenon, it is possible to determine the amount of rice from the motor current value.

(Embodiment 2) Next, a second embodiment of the present invention will be described. In FIG. 5, the rice quantity detecting means is changed from the motor current detecting means 42 to the rotational speed detecting means 34 of the
This is the same as the first embodiment, except that it changes to.

First, the flow of the control will be described with reference to FIG.

FIG. 5 is a flowchart showing a control flow. Step 21 in the initial state (power-on state)
Then, the frequency of the commercial power supply is detected, and the detection result is sent to the rice quantity determination means 43. At step 22, the voltage of the commercial power supply is detected and the detection result is sent to the rice quantity determination means 43. Power switch 3 in step 23
When the rice is started by 7, in step 24, the rotation speed detecting means 34 as the rice amount determining means detects the rotation speed of the blade member 26. In step 25, the rice quantity determining means 43 determines the rice quantity from the frequency and voltage signals of the commercial power supply and the currently detected motor current value. In step 26, the rotation speed and the milling time of the blade member 26, which are optimal for the milling amount and milling degree, are determined from the signal of the milling degree knob 38 set by the user and the signal of the rice amount judging means 43, and the motor 27 is turned on. Control. At this time, the rotation speed of the blade member 26 is
The rotation speed is detected by the rotation speed detecting means 34 and is controlled so as to always reach a predetermined rotation speed. When a predetermined time elapses in step 27, the rice polishing stops.

The rice quantity determining means will be described with reference to FIG.

FIG. 4 is a graph showing the relationship between the amount of rice and the number of revolutions when the motor 27 is operated at a predetermined power. When the amount of rice increases, the load on the rotation of the blade member 26 increases, and the rotation speed decreases. By utilizing this phenomenon, it is possible to determine the amount of rice from the rotation speed of the blade member 26.

Although the rotation speed of the blade member 26 is detected in the embodiment, the same effect can be obtained by detecting the rotation speed of the motor 27 shaft.

As described above, the rice mill of the embodiment can mill rice under optimum conditions without the user having to make any troublesome settings.

[0030]

As described above, according to the first aspect of the present invention, according to the output determined by the rice amount determining means and the set value of the rice milling adjustment knob, the motor control means controls the rotation speed of the motor section and the rotational speed of the motor. It is an object of the present invention to provide a rice mill capable of controlling the operation time and automatically milling rice at an appropriate rotation speed and time according to the amount of rice and the degree of milling.

According to the second aspect of the present invention, the output of the rice amount detecting means is corrected according to the outputs of the frequency detecting means and the voltage detecting means, and thereafter, the determination value of the rice amount is output, and the commercial power is reduced. Even if it fluctuates, it is possible to provide a rice mill that can perform appropriate rice milling.

According to the third aspect of the present invention, the rice quantity detecting means includes a motor current detecting section, detects a current flowing through the motor after the start of rice polishing, and performs automatic determination with a small number of parts. A possible rice mill can be provided.

According to the fourth aspect of the present invention, the rice amount detecting means includes a rotation number detecting means, and detects the rotation number of the blade member after the start of the milling to make accurate condition setting. A possible rice mill can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view of a rice mill according to a first embodiment of the present invention.

FIG. 2 is an external view of an operation unit of the rice mill.

FIG. 3 is a flowchart showing the operation of the rice mill.

FIG. 4 is a characteristic diagram of rice quantity, motor current value and rotation speed of the rice mill.

FIG. 5 is a flowchart showing the operation of a rice mill according to a second embodiment of the present invention.

FIG. 6 is a side sectional view of a conventional rice mill.

[Explanation of symbols]

 23 Rice polishing hopper 26 Blade member 27 Motor 34 Rotation speed detecting means 38 Rice polishing degree setting knob 39 Control circuit unit 40 Frequency detecting means 41 Voltage detecting means 42 Current detecting means 43 Rice quantity determining means 44 Motor controlling means

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Seiichi Takagura 1006 Kazuma Kadoma, Osaka Prefecture F-term (reference) in Matsushita Electric Industrial Co., Ltd. 4D043 AA03 DL04 DL08 DL10 HA05 HB08 JA09 JA19 LA07 LA12 MA01 MA04 MA23 MA26 MA30 MB04 MB06 MB08 MB30

Claims (4)

[Claims] 1. A rice polishing hopper having a perforated rice bran removing portion, a blade member rotating horizontally at the bottom of the rice polishing hopper to agitate rice, a motor portion rotating the blade member, Motor control means for controlling the number of rotations of the motor unit and the milling time, rice quantity determining means for determining the amount of rice in the milling hopper, an operation switch for starting and stopping milling, and a milling degree setting knob for setting the degree of milling. The motor control means controls the number of rotations and the operation time of the motor unit in accordance with the output determined by the rice quantity determination means and the set value of the rice milling adjustment knob, so that the Rice milling machine with high rotation speed and time. 2. The rice quantity determining means includes a rice quantity detecting means for detecting rice quantity in a rice hopper, a frequency detecting means for detecting a frequency of a commercial power supply, and a voltage detecting means for detecting a voltage of the commercial power supply. 2. The rice mill according to claim 1, wherein the output of the rice amount detecting means is corrected in accordance with the outputs of the frequency detecting means and the voltage detecting means, and then the determination value of the rice amount is output. 3. The rice polishing machine according to claim 1, wherein the rice quantity detection means includes a motor current detection unit and detects a current flowing through the motor after the start of rice polishing. 4. The rice polishing machine according to claim 1, wherein the rice amount detecting means includes a rotation number detecting means, and detects a rotation number of the blade member after the start of the rice polishing.