JPS6080488A - Stirring type washer - 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 is a washing motor:
This invention relates to a camellia agitation washing machine that operates completely in forward and reverse directions and performs washing by alternately operating the top and push tools in forward and reverse directions.

As is well known, an agitating type washer washes by moving an agitating blade installed at the center of the bottom of the washing tank back and forth at a predetermined angle, and in order to generate this reciprocating rotation, the rotation of the motor is controlled by a gear. It is common to use a link groove, etc., and this type is particularly suitable for large-capacity washing machines.

On the other hand, the machine part that generates the reciprocating rotational motion is expensive, making it difficult to use in small washing machines due to cost considerations.

However, in recent years, in order to introduce this agitation method into small-sized washing machines, an agitation-type washing machine has been devised that uses a timer etc. to directly operate the motor in forward and reverse directions to perform reciprocating rotational motion. Since it only controls the energization, it has the advantage of being inexpensive to manufacture. However, due to changes in the amount of laundry to be washed and the power supply voltage, the reciprocating rotation angle of the stirring blade is not constant, and the original performance of the push type is not fully demonstrated. There was a big drawback that it couldn't be done.

The present invention eliminates the above-mentioned drawbacks of the conventional apparatus, and has a notch at one end of the circumference, and detects the rotation angle of the stirring blade by the magnetic change caused by the rotation of a detection disk made of a magnetic material.

Based on this detection signal, the controller controls the washing drive motor so that the stirring blade reciprocates at a predetermined rotation angle.

An embodiment of the present invention will be described below based on the drawings (
I) is the body of the washing machine, and (2) is the washing tank for washing, which is fixed to the body (1). As is well known in the art, stirring blades (3) are fixed to a main shaft (4) and are rotatably arranged by a main bearing (5) K located at the center of the bottom of the washing tank (2). (6) is a pulley, and (7) is a magnetic type having comb-shaped notches (7) at an equal pitch approximately perpendicular to the circumferential edge for detecting the rotation angle of the stirring blade (3). Iron side plate (
γ] and is fixed to the main shaft (4). (8) is a rotation angle detector, and Hall element (9)
and the permanent magnet αQ is located at a predetermined distance from the side plate (7).
A predetermined voltage is applied to the grooved pole element (9) K, which is arranged so as to be located in the middle. As is well known, the Hall element (9) changes the current flowing through it due to the Hall effect depending on the strength of the magnetic field, and the direction of the magnetic field changes depending on the presence or absence of the notch (7). When a certain side plate (1) rotates, the current flowing through the Hall element (9) changes each time the notch (1) passes. This current is electrically processed, and when the detection disk (7) rotates, the side plate (J) rotates, and a pulsed electric signal matching the rotation angle of the stirring R (3) is detected. It has become.

Ql) is a motor with a motor pulley and a belt a.

It is arranged so that the power is transmitted to the stirring blade (3).

Figure 2 shows the control system of the above device, where 1→ is the control circuit;
It is composed of a memory (14a), a processing liquid@(t4b), an input control (14c), and an output control (14d), and a power supply is connected to the control circuit 04) via a power switch (l!9). The rotation angle detector (8) detects the rotation angle of the stirring blade (3), and this detection signal is input to the insert 111 circuit (141) via the input control (14), and is sent to the memory (14a).
), are processed and calculated by the arithmetic processing unit (14b), and are applied as a control signal to the drive electric motor housing via the output control (14b), and the motor is rotated clockwise and counterclockwise by this output. Ru.

FIG. 3 is a flowchart illustrating the operation of the above device, particularly the control system. Step (100) is a forward/reverse operation flag for the motor aυ, and step (1o'i) is a rotation angle setting section that sets the rotation angle (energization angle) of the stirring blade (3).9 The number of pulses N corresponding to the rotation angle is This value is set and placed in the X register in step (102). Step (10
3) is the forward/reverse operation switching unit of the motor (lυ), and step (106) is the rotation angle (3) of the stirring blade (3) when the motor is energized.
This is a counter that counts the number of pulses from the rotation angle detector (8), and its value is input to the register T. Step (10r) is a comparison section that compares whether the rotation angle of the stirring blade (3) has reached the set value N; The stop determination unit, step (112), C113) that determines that the stirring blade (3) has stopped uses the reference rotation angle and the stirring blade (3).
), an angle comparison unit that compares the movement angle until the stop of (1
14), (115), and (116) are arithmetic units that add and subtract the reference angle and the movement angle.The results are stored in the X register and the energization of the motor is controlled so that one rotation angle always becomes the reference rotation angle.

With the above configuration, the present invention will be described in detail below. First, the items to be washed are placed in the washing tank (2), water and detergent are added, and the power is turned on! If you put 9, it will be 2nd
The control system is configured as shown in the figure.

As shown in the flowchart in Figure 3, first step (10
The flag for executing the right rotation of the motor is set to IT = 1, and then in step (101) J: 1ρ stirring ↓'X
(The pulse iN of the reference rotation angle of 31 is set, and in step (102), the value is entered into the X register.

Step (103) is the motor forward/reverse operation flag, F=1.
Therefore, moving to step (10), the motor starts operating in the right direction.At the same time, the G!J-CG+ rotates, so the stirring blade (3) directly connected to it and the detection disc ( 7) rotates in the same way. Therefore, the side plate (7), which is a magnetic material, rotates, and the passage of the notch (1) causes a large change in the magnetic field flowing to the Hall element (9). ), a pulse signal is generated from the angle detection section (8).This is counted by the counter in step (106) and added to the T register, and then in step C.
The comparison section of 107) compares the contents of the X register with T (x
If so, return to step (103) and continue driving the υ motor in the right direction, and if T≧X, step (108)
Proceed to , shut off the motor power, and enter inertial operation.
The pulse signal until the stirring blade (3) stops is further added to the rT register. Step (112) is the movement angle pulse number T of the stirring blade (3) and the reference rotation angle pulse number N.
If T>N in the angle comparison section with
angle) and then divide the reference rotation angle pulse number Nj (T - N
) and enters the X register.

Step (11γ) is F-1, so step (11γ)
Proceed to step B), clear the motor forward/reverse operation flag to F-0, and then clear the T register to T-Q in step (120).
Clear it and return to step (10'3). This time, since the motor forward/reverse operation flag is F-0, the process moves to step (ios), the motor continuously rotates in the left direction, and the stirring blade (3) is rotated in the left direction.

Thereafter, the stirring blade (3) is processed in the same manner as the clockwise rotation, and the stirring blade (3) continues the reciprocating rotational movement until the cleaning is completed and the power switch OQ is shut off. Here, the Hall element is a very small element and is sold as a sensor with a built-in operational amplifier at a very low price by a component manufacturer.In combination with a permanent magnet, it rotates depending on the presence or absence of a notch in the detection disk. Corners can be detected.

Note that the position at which the rotation angle of the stirring blade (3) is detected is not limited to the above embodiment, but may be the rotation of the motor or the position where the rotation angle of the stirring blade (3) is detected.
) may be located at a position that indirectly detects the rotation.

Continuing with the above detailed explanation, the present invention does not use a complicated and expensive mechanical type reciprocating motion generating mechanism, but adjusts the rotation angle of the stirring blade to dust and moisture generated by magnets and low-cost Hall elements. Detection is performed using a combination of unaffected detection means and a magnetic plate with a simple shape containing a notch, and the motor is operated in forward and reverse directions, allowing accurate stirring operation to be performed by a controller based on the processing device. It has the great feature of providing a low-cost 4B that can be easily rented, is resistant to adverse environments, and is resistant to harsh environments.

[Brief explanation of drawings]

FIGS. 1(A), (B), and (C) are longitudinal cross-sectional views of one embodiment of the present invention, a cross-sectional view taken along the line E3-B, and a partial perspective view, and FIG. 2 is a control diagram of the apparatus shown in FIG. 1. The system configuration diagram and FIG. 3 are flowcharts for explaining its operation. In the figure, (3) is a stirring blade, (4) is a main shaft, and (7) is a detection disk. (T') is the notch, (7°) is the side plate, (9) is the Hall element. 00 is the permanent magnet, (14) is the control circuit, and aυ is the electric motor. In the figures, the same symbols are the same or equivalent parts. Agent Masuo Oiwa 1st R (1) Figure 3 Procedures Amendment (Method) ■8 sum 5qshi November 22nd 2, Name of the invention Agitator washing machine 3, Person making the amendment Relationship to the case Permit applicant address: 2-2-3 Marunouchi, Chiyo 8J-ku, Tokyo Name (601,) Mitsubishi Electric Corporation Representative Kata U” Jinhe Department 4, Agent 6, Subject of amendment (1) Drawing No. 1 figure

Claims (1)

[Claims] In an agitating type washer in which one washing drive electric motor is operated in forward and reverse directions, and the agitating blades in the washing tank are alternately forward and reversed to perform washing, the rotation angle of the sieving pusher is determined by the Hall element and the magnet (7η control for controlling the washing and driving electric motor so that the agitating blade is in reciprocating motion at a predetermined rotation angle; A stirring type washing machine characterized by being equipped with a container (I) 2゜