JPS6051552A - Control circuit in rice-cleaning machine - 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 The present invention relates to a control circuit for a home-use rice milling machine that mills brown rice. This is done by adjusting the adjustment lever or push button, etc., but if the brown rice contains moisture, the polishing level will vary depending on the moisture content in the brown rice, even if the adjustment lever is placed in the polishing section. The rice is not kept constant and is polished.

Also, when there is no brown rice left in the tank, a light-operated sensor will cause the 11 electric models to stop and stop, but if it is exposed to strong external light, the sensor will malfunction and completely stop working. Some cars were unable to stop. In addition, brown rice or broken rice that contains a lot of moisture places a heavy load on the motor, and the current flowing at that time is detected and the motor is stopped.
Because the sensitivity for detecting the self-load current is low, it is not possible to completely stop the motor, which prevents burnout of the motor 4♀
He had various shortcomings, such as being only able to do things to an extent.

However, the present invention was made to eliminate the above-mentioned drawbacks, and by detecting the motor load current due to changes in friction between brown rice and automatically controlling the frictional force between the brown rice using a 7Jf magnetic plunger, The purpose of the skewer is to maintain a constant level of fineness at all times, and furthermore, as the motor is reduced, the control rectifier is made conductive by the integrated voltage of the output square wave electrons, cutting off the control voltage applied to the motor. The purpose is to stop the motor, and the purpose is to amplify fluctuations in the load current of the motor using an amplifier to ensure that the motor stops due to overload. The goal is to capture and provide information.

An embodiment of the present invention will be described below based on the drawings. In FIG. 1, 1 is an AC @ source, 2 is an Il-L switch, 3 is a DC motor, 4 is a field winding, 5 is a main control rectifier; 6 is a circuit for applying a tri-force pulse to the gate of the main control rectifier 5; 7t: =+ I
l+iJ1/7; th and Overload Kaiichi Iha & (j
IJ f Hill lil+I N,'.

Control of the flow element + I'l + 7j
9. 1O, 1 earth supports all 4 is 1 mountain, 11; Kenaka buff is 111 k's rectifier, 12 is iL)
)3 of 91. Supply r + f, the pressure is 1st, 1st (1st diode, 13 is Ho Ii-?, H-da diodes, 14ij po [(2nd voltage tie auto, 15 is 1st old city) Diode, 161'j Skewer: did frame 3
] 1101 Q'6, lq %, integer element for detecting Ho, 17 is electric 65 and rotation of 3 11'j 'J
(Pressure i'J! (Prevent Jjr +l-,-!-Z) 14
+l: Daioto, 18 is Ha'mountain, 11" is No (1
Flywheel diode for hot weather, choke coil for preventing 19 faults, 201-j
21 is a semi-fixed resistor for the rotation of the motor 3, and a semi-fixed resistor for smooth installation.
is the game of monarchy 1i111 rectifier) 1/'m) l
Pulse valve condenser for sending gas pulse, 23
Load weight of j, persimmon, 3 with 'poly': 6tm (mount by IC: low resistance for detecting pressure, 24I', 11riU
T6's Kate VC appropriate terminal phone I]: humiliating〃ζ〆)
Bias 41 (wa'i, 25i 2
6 and 11. This rotation produces a discharge of 11L pressure, and
'T pif+time etc.1c je +4 le;+! J
ibh 1〕1: 41) lj city-)-rut's release resistor, 28 is a capacitor, 22 is an appropriate e, shape the radio waveform, and set the rotation speed of electric 1 (11 and 3). i-f
+Zs fr +'7''l of resistance, 29 digits, amplified 2ze, 1-stop die 4--de to prevent Ichikawa's backflow, 30.31 is Smoothing capacitor, 32i1: Provides direct current to the circuit (11') Resistor, 33.34-it: Sends DC from the boot Vc operational amplifier of both rectifying elements 7 to 1. Bias and integral gf to divide the overload stop + Ng signal to an excessive value 41't', 35 kn co/capacitor, 36 supply voltage to the operational amplifier circuit - low for pheasant Voltage diode, 37.38 Shadow load standard 1) L press-fitted pheasant bias abrasive, 39.4 (1, 41, 42, 43 are J4 resistance, 44 is ru ile < Gra/Gar flywheel diode, 45il″L
'iij', l? <Plan/year, 46 is plunger 45 according to the name of treetop whiteness detection VCIR person city:
Power transistor that opens and closes MV, 4'i'id
Load 'market change n1lVC, 1: Kth comparative performance enhancement device for white IW detection 1 unit, #', knee-1'2'-11, -
3-° two valves, 4B is electric 1i) 1 machine 3 starting Φno 1
49 is a bias resistor that provides an appropriate bias current to the base of the power transistor; 50 is an automatic stop base; 4 is a voltage setting resistor; 51 is a precision selection VC; A voltage setting resistor, 52 is a terminal for adjusting the whiteness level of 5Ifa, and 53.54 is a switching resistor for switching the whiteness level, B.

C is rice polishing degree! 55 is the overcurrent prevention resistor of the voltage diode for setting the precision standard, 56 is the electromagnetic plunger 45
Reference voltage setting board voltage diode for control, 57 Resistor to obtain reference voltage to maintain minimum precision, 58 is a capacitor to prevent malfunction at startup, 59 is a maintenance cap to prevent malfunction. Detailed resistance, 601d operational amplifier 4
7 is a bias resistor for giving a precision signal to one terminal, 61 is an operational amplifier for detecting and amplifying the load current, 62 is an integrating capacitor, and 63 is a reference for the load current of the motor 3 based on the variation in the electric current and the control circuit. A correction semi-solid resistor for correcting the load current, 64 a protection resistor for preventing excessive output of the operational amplifier 61, 65 a feedback resistor for setting the amplification degree of the operational amplifier 61, and 66 an operational amplifier. a bias resistor that provides an amplification reference voltage to the ten terminals of 61;
7 is a resistor for setting the amplification degree standard of the amplification reference voltage at the ten terminals of the operational amplifier 61, 68 is a comparison operational amplifier for detecting automatic stop timing due to fluctuations in the load current, and 69 is a 70.71 is a blocking diode to prevent the flow into the operational amplifier; 72 is a blocking diode to prevent the overload detection voltage from flowing backward; 73 is an integral condensizer for obtaining 5C of overload detection, '74 is an integral resistor for detecting all overcurrents, and 75 is a capacitor 73-・Discharges the overload charging 7L voltage to prevent malfunctions at the time of restart, etc. 76 is a rotating electromotive current carrying resistor, 7'7 is a reverse current diode, 7 is an overcurrent prevention resistor, and 79 is a reverse current prevention diode. FIG. 1 shows a control circuit for a rice milling machine according to the present invention, which is configured as a main motor circuit that supplies motor current from an AC power source to a DC motor via a main control rectifier element of a Meno switch. 1 [When the voltage is applied 7 and the Menos-f knob 2 is turned on, the power supply voltage is applied to the rectifier elements 8.9.10. ], 1
The full wave is added by the resistor 41. blocking diode 12
, the voltage regulator diode 13, the rectifier 16, the motor 3, the field winding 4, and the resistor 23. Therefore, a constant voltage can be maintained between the anode and cathode of the voltage regulator diode 13.
The constant voltage is F? after resistor 24 and resistor 25 are connected in series. , served at both ends. Further, the current flows through a circuit consisting of a semi-fixed resistor 21, a resistor 28, and a capacitor 22, and the capacitor 22
is charged at a constant voltage. This charge', 71;, pressure is applied to the anode and cathode of PUT6, i+9PU
When the voltage between the gate and cathode of T6 becomes greater, PUT 6 becomes energized, and the output voltage becomes rit + 1'A.
Since 'y' -) K and 'J of seven elements 5 are added as a pulse signal, the main control rectifying element 5 becomes energized fj, and three electric motors are started. 1 of the main control rectifier elements 5
1b power is carried out every half wave of the frequency of the power supply, and the operation is cascaded.

If the rotation of the type null #j 3 and the resistance of the semi-fixed resistor 21 (i9) are slightly reduced, the charging voltage of the capacitor 22 will rise faster and the energization phase angle will also become faster, so the rotation speed will increase. If the resistance value is not increased further, the rotation speed will decrease.As the electric motor 3 rotates, the field winding 4
is 11U of the flywheel diode 18 when the curve c [L is in the state of υFF゛].
1@(f(yori!jIll
At l 8', y 3, rotation 7 Xishi force is generated, and Guhaiqi I
+3; The force is in the direction I/c 1'l which is opposite to the 111[)L direction of the trace 1r. The rotational force (・, [
Resistor 76 and 1) 11 diode 17, conde knob - 2
In a circuit consisting of 6, charge the capacitor with 6'...1.

History V (Four rotations, the force is resistive (γi 227), but the resistor is regrettable, so there is no rotation time), the force is Klx, and the force is 2. It's cold. Therefore, capacitor-2
Both sides of b/, 11 r-J', Ii, wind i, rotation of 1 phase 3 V (the integral voltage that was second to none was detected 711 this time →) --26K The detected integral π11 pressure is Blocking diode 15) ihi W' middle: moon - pu via diode 14
'R6 Kate, will it be a car added between the cathode?
The integral 1'' () of the flood pressure diode 14 is calculated by the integral 1'' (). However, as the number of rotations of the motor 3/ba increases, the integrated voltage generated by the voltage value of the main voltage regulating diode 14' is jlJ. The integrated voltage at r-introduction fr is the gate of PUT6,
The voltage between the gate and cathode of the PUT 6 rises above the reference voltage of the resistor 25 due to the stone wheel selected between the cathode [1111], so that when switching the PUT 6, JIJl increases
l? i<, the rotational speed starts to decrease. Therefore M
The rotational speed of the ε motor 4 and 3 is automatically controlled to increase or decrease the direct current, so that the rotational speed of the ε motor 4 and 3 is always Δ relative to the change in the load.

Next, polish the brown rice f+'! The side slope i/+'' of whiteness will be described.

As shown in 171'j, when the electrical grid 3 is rotated and polished, the fineness terminal 52 is placed at an arbitrary position on the stake 54 to obtain a desired degree of fineness. vinegar/). At this time, the constant voltage from the constant voltage diode 56 is applied to the terminal 52.
Then, a partial voltage ζ is applied to the resistor 54 between the terminals. Therefore, the constant voltage generated by the constant voltage diode 56 is connected in parallel with the resistor 54 between the C medium and the resistor 53 between the B terminal and the terminal 52, and is applied to the f resistor 50. Therefore, the reference voltage applied to the terminal 11 of the input terminal 47 for the operational amplification for detecting the precision is the voltage applied to the resistor 50.
and resistor 53 between terminal 52 and B terminal; Therefore, it is necessary to take a moment of β in order to obtain the pressure in the first table. An amplification reference voltage is applied by a semi-fixed resistor 63. Since the amplifier 61 is a width amplifier, it amplifies the voltage at the + terminal minus the voltage at one terminal. Become. Therefore, the pressure waveform shown in FIG. 2 is used to smoothly perform automatic control of the polishing level by changing the voltage from the semi-rigid Dl grinding wheel 63 to correct variations due to the load current of the motor 3 and variations in the circuit. An ideal combination of DC (a) and triangular wave + rj (f) would be ideal. The triangular waveform' voltage is applied to one terminal V of the operational amplifier 47 via a resistor 64, and the operational amplifier 47
The maximum output voltage is 14 when the output voltage of the operational amplifier 61 applied to one terminal becomes lower than the base ω voltage applied to the ten terminals. The fri multiplier width unit 4
The power output changes to a triangular waveform +f+ due to changes in the output of the amplifier 61.
is shown in Figure 3 (VCi (j flow false: as a reference,
Since the rectangular width (1'/l) of the rectangular wave (fl) is changed, the output becomes (44), and this output is
Since the fx is not added to the base of 6, an electric current (A'4) will flow through the plunger 45. In other words, Zl:: The reference voltage of the +4 child of the operational amplifier 47 should not be increased by moving all the children 52 and j2. /], the width of the square wave becomes larger and the polishing level increases1, and when the reference voltage is decreased, the width of the square wave becomes smaller5 and the polishing level decreases.Also, even if the reference voltage fF is constant, the whiteness decreases. A: When the friction increases due to changes in the moisture contained in the electric m3 VC negative load ≠, the load current increases and the output of the operational amplifier 61 increases. As the width of the rectangular wave becomes smaller, the flow is kept constant so that the number of forgeries decreases.

Next, we will describe a device that automatically stops the rotation of an electric motor by detecting the presence or absence of brown rice to be polished. The voltage generated across the resistor 500 is applied as a reference voltage to the →− terminal of the operational amplifier 6B via the resistor 59. Historically, the output from the operational amplifier 61 is added to one terminal via the resistor 64.

The operational amplifier 6d, as a comparison arithmetic amplifier, outputs the maximum rectangular wave voltage only when /J is smaller than the reference voltage of the operating terminal. When the brown rice runs out and the load current of the motor 3 decreases, the output rectangular wave voltage is divided by dt from the resistor 34 and the capacitor 35 [by the 70% - red voltage], and the integral is The voltage is applied to the trigger 1 through the resistor 33 to the gate of the regulating element 7.
Since it is added as No. g, the control rectifier 7 is in the energized state 1.
Control 1 to trigger the monarch side 1 rectifying element 5 to become μ?
l'', the voltage (constant current n: terminal voltage between the diodes 13) becomes zero. Therefore, voltage is no longer supplied to the PUT 6, and no trigger pulse is applied to the gate of the main control rectifying element 5, so that the current is cut off and the rotation of the electric paper machine 3 is interrupted.

In order to increase the polished IW of milled rice (-1, V'jA,'
When F5 is brought closer to the C terminal side, the current flowing through the resistor 50VC becomes jX'i)711 vC. On the other hand, if the terminal 52 is brought closer to the B terminal side, the current hlfItj flowing through the resistor 50 decreases and becomes flat. However, by switching the J, j; 3\4 voltage Vr1 polishing level (terminal 52) of the ten terminals of the operational amplifier 6B, the optimum substrate voltage can be set according to the own ib#. (After a certain period of time, the electric power supply 3 will definitely shut off. As mentioned above, when the electric lit machine 3 stops 1-, the electric current 11b of the control rectifying element 7, between the anode and cathode of the rectifying element 7) Due to the backflow blocking diode connected to the backflow blocking diode, the flIII renal flow element 7 becomes LJFF-like deaf, and the performance amplifier 61.47 and the power transistor 4 become deaf.
6, the voltage will not change, so use electromagnetic silanger 45.
No current will flow through. (d-t'rli, !l
The silanger 45 can be maintained in a completely stopped state.

Next, if the brown rice to be polished contains an abnormally high amount of moisture or if the crushed rice causes clogging, set the overload stop device to the Eri control 1'+]L pressure and shut off the entire electric machine. Let's talk about the device that stops it. One terminal of the operational amplifier 69 for using overload is connected to a resistor 3'7.3B.
A standard pressure is applied.

In the case of an IC, the output from the operational amplifier 61 is divided by Q +11 through the resistor 74 and the capacitor 73 to obtain a power of 11.
is being given. When this integrated 'voltage becomes much higher than the reference pressure, the operational amplifier 69 outputs (l:l:maximum' voltage).
and is integrated by the capacitor 35. The integrated pressure is applied as a tri-force signal to the gate of the control rectifying element 7 through the resistor 33f, so that the control #/7 element 7 receives +I! l'i
f;, 1N, so the limiting voltage that triggers the main control rectifying element 5 becomes zero. Therefore, voltage is supplied to PUT 6, and the main control rectifier 5 passes through 7J.
When t is no longer performed, the first and third stops.

As explained above, in the present invention, when polishing brown rice, the degree of polishing of brown rice, which contains moisture, changes by rubbing the brown rice with TH7, and detects the load current due to the change in the friction. The polishing level is always kept at one level by using a vehicle that controls the l'iN friction force of brown rice by nm1 in relation to the two reference voltages. The village government announced that the control voltage applied to the mold opening + 4:ij should be interrupted at one point to stop the electrical connection. Accurate power outage i [+
# Constructed to perform the work [7f] As a result of this, it is possible to create an I-end that performs the ``Noseo'' with a high AI rate, so the practical effect is much greater than that in this game.

[Brief explanation of the drawing]

Figure 1 shows the rice milling machine based on the present invention.
Figure, figure 3, figure 4 e, main capital fund 11 times v? Drop the triangular and rectangular waveforms in 1. February 14, 1980, Mr. Commissioner of the Japan Patent Office1, Indication of the case, 1981 Eyebrow Patent Application No. 1609792, Name of the invention, Intermediation circuit in milled rice cotton 3, Relationship with the case of the person making the amendment Patent application Man

Claims (1)

[Scope of Claims] 1. A main motor circuit that supplies motor current from the AC power source to the DC motor via the main switch and rectifier (path Q1 and the main control rectifier), and a rectifier current to the main control rectifier. a first operational amplifier and a power transistor for detecting precision, a first operational amplifier and a power transistor for detecting a load current; a second operational amplifier, a third operational amplifier for detecting automatic stop timing due to load current fluctuations, and a fourth operational amplifier for detecting an overload value based on load current fluctuations. A control circuit for rice milling, characterized in that it comprises an operational amplifier and a control rectifier element which is made conductive by the outputs of the third and fourth operational amplifiers. 2. In the control circuit according to claim 1, the polishing degree control means connects the polishing degree switching terminal to the child terminal of the operational amplifier of the housing, and connects the second operational amplifier to one terminal. A control circuit comprising: a power transistor and an electromagnetic plunger connected to the output side of the first operational amplifier;