KR20000021981A - Method for driving ice releasing motor of automatic ice machine - Google Patents

Abstract

PURPOSE: A method for driving an ice releasing motor of an automatic ice machine is provided to rotate a cam forwardly and reversely by sensing the position of a cam from an ice releasing motor attaching a magnet using a hall sensor. CONSTITUTION: A hall sensor(40) sensing magnetic force turns on a switch by feeding magnetic force and turns off the switch by not feeding magnetic force. Therefore, the hall sensor feeds a detected value to an A/D port of a microcomputer by discriminating a first magnet(20) and a second magnet(30) as sensing different magnetic force of each magnetic. Also, when inputting power, a cam(10) is rotated forwardly for sensing the horizon of an ice manufacturing side. Then, a cam is rotated reversely when the hall sensor senses the first magnet attached to the outer circumference of the upper cam and the cam stops when the hall sensor senses the second magnet to sense the horizon of the ice manufacturing face.

Description

A method of driving an ice machine of an automatic ice maker.

The present invention is a method for driving an ice machine of an automatic ice maker which attaches a magnet to an ice motor cam of an automatic ice maker, and detects the rotational position of the cam so as to rotate the ice motor forward / reversely by detecting a rotational position of the cam. It is about.

In general, the automatic ice maker in the refrigerator automatically cycles the ice making operation to freeze the ice, the ice making to remove the ice from the ice making container, and the water supply operation to supply water to the ice making container. It is a device for making ice.

The ice making mode of the conventional refrigerator ice maker has the following operation process.

First, in the ice making mode where ice is made, it is determined whether 2.4 hours (144 minutes, sufficient ice making time) has elapsed after the power is supplied or after the water supply, and if it has elapsed, the internal temperature detected by the I-sensor is -12.5 ° C ( Ice is produced for 2.4 hours with sufficient ice making temperature and externally adjustable).

Next, in the ice-making mode, referring to FIG. 1, the ice is dropped by twisting the ice-making name, and the moving motor rotation (driving) signal of each section (section 1-section 5) output from the microcomputer is detected.

In the water supply mode, water is supplied to the ice making name for 9 seconds, and in the water supply confirmation mode, it is checked whether water is properly supplied.

On the other hand, referring to Figure 2, such a conventional automatic ice maker ice motor 10 is 15V is applied in the forward rotation, -15V is sensed in the reverse rotation, the output signal from the microcomputer 60 is applied and the first drive unit ( Drive in accordance with the control signal of 20).

In addition, the driving signal of the moving motor 10 is detected at the output terminals (port A and port B) of the microcomputer 60 and applied to the microcomputer 60 (E port, F port) by the second driving unit 30. .

When the actual moving motor 10 is driven, the control signals of the horizontal switch 40 and the detection switch 50 are changed.

However, in such a conventional automatic ice maker, there is a problem in that the volume of the automatic ice maker is increased by providing a horizontal switch which is variable by the driving of the ice motor and a driving unit for driving the ice sensor and the ice motor.

The present invention was created in order to solve the above problems, by using the Hall sensor to detect the position of the moving motor cam attached to the magnet driving the ice machine of the automatic ice maker to drive the cam forward / reverse rotation To provide a method.

1 is an operation related to the ice-making mode of a typical automatic ice maker;

2 is a schematic circuit diagram of a conventional automatic ice maker;

3 is a schematic operation diagram of an ice motor driving method of an automatic ice maker according to the present invention;

4 is an operational state diagram of an ice motor driving method of an automatic ice maker according to the present invention.

<Description of the symbols for the main parts of the drawings>

10 ... cam

20 ... 1 magnet

30 ... the second magnet

40.Hall sensor

50 ... ving motor

In the method of driving the ice motor of the automatic ice maker of the present invention for achieving the above object, in the method of driving the ice motor of the automatic ice machine, magnets having different magnetic forces are attached to the cam of the ice motor at predetermined intervals. Rotating the cam within a predetermined interval when the power is turned on; Hall sensor for detecting the magnetic field during the rotation of the cam is characterized in that it comprises the step of driving the ebbing motor forward / reverse rotation according to the rotational position.

In addition, the cam is rotated forward until the Hall sensor detects the first magnet attached to the predetermined position of the cam when the initial power is supplied to the moving motor; Stopping the cam when the first magnet senses the second magnet and the second sensor is spaced apart from the first magnet by a predetermined rotation; When the hall sensor detects the first magnet within a predetermined time and the cam rotates forward, the cam rotates by determining the moving mode as the maximum torsion point; And when the hall sensor detects the second magnet within a predetermined time during the reverse rotation of the cam, determining the moving mode as the horizontal mode and stopping the cam.

According to the above-described feature of the present invention, the moving motor driving method of the automatic ice maker of the present invention detects the position of the moving motor cam with a magnet by using a hall sensor and rotates the cam forward / reversely so that the automatic ice maker has a simple configuration. It can be driven, and the size of the automatic ice maker can be reduced.

Hereinafter, with reference to the accompanying drawings will be described in detail the method of driving the ice motor of the present invention automatic ice maker.

In the method of driving an ice machine of the automatic ice maker according to the present invention, referring to FIGS. 3 and 4, magnets 20 and 30 having different magnetic forces are attached to the cam 10 of the ice motor 50 at predetermined intervals. Rotating the cam 10 within a predetermined interval of the above-described magnet when the initial power of the moving motor 10 is turned on; As the Hall sensor 40 for detecting the magnetic field during the rotation of the cam 10 detects the rotation position, the driving motor 50 is rotated forward / reversely.

The cam 10 rotates forward until the hall sensor 40 detects the first magnet 20 attached to the predetermined position of the cam 10 when the initial power is supplied to the moving motor 50. When the cam 10 is reversed when the first magnet 20 is detected and the hall sensor 40 detects the second magnet 30 spaced apart from the first magnet 20 at a predetermined interval, the cam 10 stops. Steps; When the cam 10 rotates forward and the hall sensor 40 detects the first magnet 20 within a predetermined time, the cam 10 is rotated in reverse by determining the moving mode as the maximum torsion point; And when the hall sensor 40 detects the second magnet 30 within a predetermined time during the reverse rotation of the cam 10, determining the moving mode as the horizontal mode and stopping the cam 10.

In more detail, first, the first magnet 20 and the second magnet 30 are attached to the cam 10 of the ice motor 50 in the automatic ice maker, and the first magnet 20 and the second magnet 30 are attached to each other. The magnet 30 is to use a different mutual magnetic force.

The cam 10 is driven only in a section between the first magnet 20 and the second magnet 30 described above, and the hall sensor 40 is attached to correspond to the magnets 20 and 30 at regular intervals. have.

The Hall sensor 40 detecting magnetic force is switched on when the magnetic force is applied using the Hall switch, and is switched off when the magnetic force is not applied. The first sensor 20 detects different magnetic forces. By distinguishing from the second magnet 30, the detected value is applied to the A / D port of the microcomputer.

When the initial power is turned on, the cam 10 rotates forward to detect the level of the ice making name. When the hall sensor 40 detects the first magnet 20 attached to the upper outer circumferential surface of the cam 10, the cam 10 rotates forward. The cam 10 rotates backward and stops when the hall sensor 40 detects the second magnet 30 to detect the horizontal position of the ice making name.

Subsequently, when the ice making name is horizontal, forward rotation starts. When the hall sensor 40 detects the first magnet 20 within a predetermined time (for example, within 20 seconds), the microcomputer determines that the ice breaking mode is the maximum torsion point. When the cam 10 rotates in reverse, and the hall sensor 40 detects the second magnet 30 within a predetermined time after the reverse rotation starts, it determines that the ice making name is horizontal and the moving motor 50 stops.

The method of driving an ice machine of an automatic ice maker according to the present invention can drive the ice motor in a simpler way by using a hall sensor without having a horizontal switch and an ice detector switch in the automatic ice maker, and can reduce the size of the automatic ice maker. Will be.

Claims (2)

In the method of driving the ice machine of the automatic ice maker, Magnets having different magnetic forces are attached to the cams of the moving motors at predetermined intervals so that the cams rotate within the predetermined intervals when the initial power of the moving motors is input; And a step of driving the moving motor forward / reversely in response to the Hall sensor detecting a magnetic field when the cam rotates, wherein the moving motor rotates the cam. The method of claim 1, further comprising: rotating the cam forward until the Hall sensor detects a first magnet attached to a predetermined position of the cam when initial power is supplied to the moving motor; Stopping the cam when the first magnet detects the second magnet which is spaced apart from the first magnet by a reverse rotation when the first magnet is detected; If the hall sensor detects the first magnet within a predetermined time and the cam rotates forward, the cam rotates in reverse by determining an ice mode as a maximum torsion point; And if the hall sensor detects the second magnet within a predetermined time during the reverse rotation of the cam, determining the moving mode as the horizontal mode and stopping the cam.