JPH01299512A - automatic rice cooker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an automatic rice cooker used in general households.

Conventional technology Conventional automatic rice cookers that automatically perform everything from washing rice to adding water and cooking the rice, generally use water to wash the rice, but they also use stirring blades, jet water jets, etc. It has been proposed that rice be washed by force using the force of collision between rice, and as for the water amount, rice is measured using a measuring basin installed at the bottom of the rice bin, and water is measured using a measuring basin installed at the bottom of the rice bin. It has been proposed to perform metering by temporally controlling a solenoid valve installed at the bottom of a water tank (for example, Japanese Patent Application Laid-Open No. 61-2)71
Publication No. 18).

Problems to be Solved by the Invention In the conventional method described above, rice can be measured with fairly high accuracy as long as the type of rice does not change. Since the flow rate of water changes depending on the area and the initial water level of the water tank, simply controlling the opening and closing of the solenoid valve over time not only has poor accuracy in measuring water, but also makes it difficult to add or subtract water to rice that has been washed. This means that it is not possible to adjust the appropriate amount of water without taking into account the moisture already contained in the rice, but since this moisture content is not constant due to the influence of water temperature, etc., it is difficult to cook rice at a constant consistency, The problem was that it was not sufficient to adjust the hardness as desired.

In addition, when measuring water, a method has been proposed in which electrodes are installed around the water tank and the water level is detected by changes in capacitance between the water and the electrodes, but this method does not depend on room temperature or water quality. Otherwise, there was a problem that errors occurred due to the influence of water temperature.

The present invention solves the above-mentioned problems, and has a simple configuration that enables automatic rice cooking that cleanly washes rice without using water, improves the precision of measuring water, and adjusts the amount of water appropriately. The purpose is to provide a container, and in particular, to eliminate errors in the amount of water due to room temperature, water quality, or water temperature.

Means for Solving the Problems In order to solve the above-mentioned problems, the automatic rice cooker of the present invention includes a rice pot part that stores rice and discharges it in predetermined amounts, and a rice cooker part that removes sugar from the rice supplied from the rice pot part. a rice section, a rice cedar feeding section for transferring polished rice, a water supply section for supplying water necessary for cooking, a water level detection section for detecting the water level of the water supply section and determining an appropriate amount of water, and the water level. A water level correction unit that corrects the water level detected by the detection unit based on room temperature; a rice cooking unit that cooks rice using the rice and water supplied from the rice cedar feeding unit and the water supply unit; and a series of sequence control and rice cooking control. The control unit is equipped with a control unit that performs the following operations.

The water level correction section is configured to perform correction based on water quality as well as water temperature.

Effects The present invention has the above-described configuration, so that rice can be washed without using water, so there is no error in water level due to water absorption into the rice, and water quality, room temperature, water temperature, etc. It is possible to adjust the appropriate amount of water using an accurate water measuring means without being influenced by the water.

EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

FIG. 1 is a block diagram showing the overall configuration of an automatic rice cooker according to an embodiment of the present invention. In this Figure 1, 1 is a rice bin part that stores rice and can discharge it in predetermined amounts, 2 is a rice polishing part that removes sugar from the rice supplied from the rice bin part 1, and 3 is a part that removes the rice that has been polished. 4 is a water supply section that supplies water necessary for cooking rice; 6 is a water level detection section that detects the water level of the water supply section 4 and determines the appropriate amount of water; 6 is a water level detected by the water level detection section 6; 7 is a rice cooking section that cooks rice using the rice and water supplied from the rice cedar feeding section 3 and the water supply section 4; 8 is a control section that performs a series of sequence control and rice cooking control.

The water level correction section 6 performs correction on the water level detected by the water level detection section 6 based on room temperature, water quality, and water temperature to obtain a correct water level value.

FIG. 2 shows a detailed embodiment of the rice bin section 1, the rice polishing section 2, and the rice cedar feeding section 3. Rice bin part 1 is rice bin 8,
It consists of a rice discharge section 9 that measures and discharges rice in predetermined amounts.

The rice polishing section 2 includes a rice polishing brush 10 whose outer periphery is flocked, a rice polishing motor 11 that drives the rice polishing brush 1o, and a small hole that covers the outer periphery of the rice polishing brush 1o and is large enough to prevent rice grains from flowing out. a polishing body 12 provided with a large number of rice polishing bodies 12, a rice grain part 13 located below the rice discharge part 9 and opened upward, and a polished rice container provided with a rice discharge hole 14, an intake hole 16, and an exhaust hole 16. 17, and a bran container 18 for recovering the sugar discharged from the exhaust hole 16.

The rice cedar feeding unit 3 also includes a transfer fan 19, a suction pipe 20 connecting the bran container 18 and the intake side of the transfer fan 19, an exhaust pipe 2) provided on the exhaust side of the transfer fan 19, and a polished rice container 17. an ejector 22 having a structure for pneumatically feeding the rice discharged from the rice discharge hole 14;
The transport pipe 23 transports the rice to the pot by the action of the transport pipe 23.

FIG. 3 shows a specific embodiment of the water level correction section 6, in which 24 is a galan tube, 25a and 26b are a pair of electrodes, 26 is a water supply pump, and 27 is a drainage pump. In this embodiment, the water quality is determined by measuring the conductivity of the water filled in the glass tube 24.

This makes it possible to correct errors in the detected water level due to differences in water quality.

Further, the room temperature correction and the water temperature correction in the water level correction section 6 are performed using a temperature sensor such as a thermistor.

FIG. 4 shows a concrete example of the water supply section 4 and the water level detection section 6, where 28 is a water tank and 29a.

29b is a pair of sensor electrodes. In this embodiment, a pair of sensor electrodes 29a.

The water level is detected by the capacitance change between 2sb.

The operation of the above configuration will be explained next.

When the user determines and inputs the amount of rice to be cooked, the control section 7 outputs a control signal to the rice bin section 1, and as a result, the rice discharging section 9 of the rice bin 8 measures the rice in predetermined amounts and sends it to the rice polishing section 2. Supply this rice. Next, the rice polishing motor 11 of the rice polishing section 2 is driven to rotate the rice polishing brush 10, and the rice bran and the like adhering to the surface of the rice are removed between it and the polishing body 12. At the same time, the transfer fan 19 of the rice cedar feeding section 3 is driven, and air is sucked in through the intake hole 16 of the polished rice container 17 and exhausted through the exhaust hole 16. And the sugar removed from the rice is exhausted from the exhaust hole 1.
6 and is collected in a bran container 18.

The polished rice is sent from the rice discharge hole 14 to the ejector 22, and is transported to the rice cooking section 6 via the transport pipe 23 by air supplied from the transfer fan 19 through the exhaust pipe 2). If the lower part of the bran container 18 is configured to be detachable as shown in FIG. 2, the bran can be easily disposed of.

Next, the amount of water in Examples of the present invention will be explained.

The water level of the water tank 28 of the water supply section 4 is determined by a pair of sensor electrodes 29a provided opposite to the side wall of the water tank 28,
The capacitance change between 2eb and 2eb is detected and measured. for example,
A pair of sensor electrodes 29a.

The measurement is performed by constructing an oscillation circuit using the capacitance between the capacitances 29b and counting the output PURNU number of this oscillation circuit and converting it to the water level. Therefore, when supplying an amount of water commensurate with the amount of washed rice, this can be done by controlling the water supply while measuring changes in the water level in the water tank 28 using the water level detection section 6 while supplying water.

Furthermore, errors in water level due to changes in water temperature, room temperature, and water quality can also be removed by the water level correction section e. Furthermore, since the rice washing method is a method that does not use water, it is possible to adjust the amount of water without any errors caused by water absorption into the rice.

Effects of the Invention As is clear from the description of the above embodiments, according to the present invention,
In addition to having a means of washing rice that does not use water, it also has a water level correction unit that corrects the water level detected by the water level detection unit, so it is possible to prevent errors in the amount of water due to water absorption into the rice, and water level due to changes in water temperature, room temperature, and water quality. There is no error in addition or subtraction, and as a result,
Since it is possible to measure water extremely accurately, it is possible to provide an automatic rice cooker with good water level accuracy.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the overall configuration of an automatic rice cooker according to an embodiment of the present invention, FIG. The figure is a perspective view showing a specific embodiment of the water level correction section, and FIG. 4 is a configuration diagram showing a specific embodiment of the water supply section/water level detection section. 1... Rice potting department, 2... Rice polishing department, 3.
...Yonesugi feeding section, 4...Water supply section, 6...
...Water level detection unit, 6...Water level correction unit, 7...
...Rice cooking section, 8...Control section. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 22 ■ Water transport direction 11 Moan signal direction 8 - Water bottle 16 - Exhaust Figure 2 Figure 3 Figure 4 Figure 2? ) and 4--1 water supply part a3-m-water evening 1%, a--1 saucer electric switch 1'''

Claims (3)

[Claims] (1) A rice bin part that can store rice and discharge it in predetermined amounts, a rice grinding part that removes sugar from the rice supplied from the rice bin part, a rice transfer part that transfers the ground rice, and a rice pot part that can be used for cooking rice. a water supply unit that supplies necessary water; a water level detection unit that detects the water level of the water supply unit and determines an appropriate amount of water; a water level correction unit that corrects the water level detected by the water level detection unit based on room temperature; and the rice transfer unit. An automatic rice cooker comprising: a rice cooking section that cooks rice using rice and water supplied from the water supply section and the water supply section; and a control section that performs a series of sequence control and rice cooking control. (2) The automatic rice cooker according to claim 1, wherein the water level correction section performs correction based on water quality. (3) The automatic rice cooker according to claim 1, wherein the water level correction section performs correction based on water temperature.