JPS61125387A - Rotary number control method and apparatus washing 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] [Field of Industrial Application] The present invention relates to a method for controlling the rotation speed of a washing machine, which is applied to dampen vibration during dehydration in a washing machine such as a dry cleaner or a water washer/extractor. and equipment.

[Conventional technology]

For example, in a dry cleaner that uses a solvent such as perchlorethylene to wash and dry clothing, etc., the clothing is placed in a processing drum, washed, and then the processing drum is rotated at high speed to remove liquid using centrifugal force. However, if clothes, etc. are unevenly distributed in the processing drum, uneven load of clothes, etc.
A larger excitation force is generated, causing the dry cleaner body to vibrate, and this vibration may be transmitted to the surrounding area through the ground, causing vibration pollution. For example, in a conventional dry cleaner having a drive system shown in FIG. 4, the following method was used as one method to prevent this vibration pollution. Figure 4 shows an example of driving the processing drum, and 2 shows the cleaning and
a cleaning motor 3 that drives the processing drum 1 at low speed during drying;
7 drives the processing drum 1 at high speed during liquid removal; 7 is a liquid removal motor that performs centrifugal liquid removal; 4 is an electromagnetic clutch that disconnects the washing motor 2 when the liquid motor taco is driven; 5.6, 7, 8.9 .1
0 is a V-pulley, 11.12.13 is a V-belt, and in Figure 1 and 4, sensors such as an acceleration house vibration detector and a vibration displacement measuring device are attached to the main body of the dry cleaner (not shown). The vibration monitoring circuit activates the vibration monitoring circuit, which temporarily stops the processing drum 1 from high-speed rotation driven by the liquid removing motor 3, corrects the unbalance of the clothing, etc., and then starts the processing drum 1 again. Deliquoring was performed by shifting from low-speed rotation by the cleaning motor 2VC to high-speed rotation by the delitting motor 3.

[Problem that the invention seeks to solve]

However, in the conventional method, the processing drum is rotated at high speed.
Since the process goes through a process of stopping, rotating at low speed, and then rotating at high speed, this pattern is repeated many times unless the imbalance of the clothing, etc. is corrected, resulting in an abnormally long processing time.

The present invention has been proposed to solve the above-mentioned conventional problems, and even if the machine vibration occurs due to unbalance of clothes etc. during the draining process, it can be done without stopping the processing drum each time. A cleaning machine that reduces the rotational speed of dewatering to a level that does not cause vibration pollution to prevent vibrations and shorten the processing time.
It is an object of the present invention to provide a side rotation speed method and a Vl position of ls.

[Means for solving problems]

The rotation speed side (capital) method of a washing machine according to the present invention is a washing f# machine (equipped with a vibration monitoring sensor, and the rotation speed at the time of dehydration of a motor with a variable speed restriction for washing and dehydration is detected by the vibration monitoring sensor). It is characterized by changing speed according to the output of the motor.

Furthermore, the rotation speed control aV device for a washing machine according to the present invention has a
A vibration monitoring sensor that detects the vibration status of the II machine, a dewatering strength memory circuit that transmits a predetermined dewatering synchronization number to the central control unit using a dewatering strength selection key, and an output from the vibration monitoring sensor. town shift control a II fiF
It is characterized by comprising a command voltage storage circuit for transmitting VC.

[Effect]

According to the present invention, a washing machine 1 cm movement monitoring sensor is provided, a motor with variable speed control having a variable speed control device such as an inverter is used as a motor for washing and deliquoring, and a vibration monitoring sensor is used to monitor the vibration during delitting. When the motor operates, the deliquing rotation speed of the motor is reduced to a rotation speed at which the vibration monitoring sensor does not operate.
This enables continuous operation without stopping the rotation of the motor each time, thereby shortening the processing time and making it possible to provide vibration isolation.Furthermore, the deliquing rotation speed is increased by KX more than before. In addition, by using a motor with variable speed control, it is also possible to use a single motor as a conventional cleaning motor and a deliquoring motor, which solves the problems of the conventional method. It was made so that it could be resolved.

[Example of real power]

An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a diagram showing the configuration of an example of a drive system of an apparatus used for carrying out the method of the present invention, in which 61 is a processing drum, 52
54.56 is V
Pulley 56 is a V-belt.

FIG. 2 is a block diagram showing the configuration of a deliquing rotation speed control device in a practical example of the present invention, and 57 is a machine stand (washing machine).
When a vibration monitoring sensor attached to the sensor detects a vibration larger than a predetermined vibration level, it turns on and sends a signal to the central control device 58. Reference numeral 59 is a dewatering strength memory circuit, which stores several types of dewatering strength, that is, the dewatering rotation speed N (for example, 500 rpm, 450 pm + 40 or p.
m + 35 Orpm l 30 Orpm) is memorized, and by selecting the 1 deliquing strength selection key 60, the set deliquing rotation speed is sent to the central control bag W58. Reference numeral 61 is a command voltage storage circuit which, when receiving an ON signal from the vibration monitoring sensor 57 via the central control unit 58, lowers a preset command voltage (for example, set to gradually decrease from 5V). Central control unit 5 for signal
8 to a variable speed control device 53 to lower the rotational speed of the main motor 52 to the next lower rotational speed.

The operation of the above embodiment of the present invention will be explained.

In FIGS. 11 and 2, when the washing machine enters the dewatering process, as shown in FIG.
00 rpm) (the command voltage at this time corresponds to 5V). In this case (for example, when an excitation force is generated due to unbalance of clothing in the processing drum 51 and the vibration monitoring sensor 57 detects abnormal vibration of the machine, the vibration monitoring sensor 57 sends an ON signal to the central control device t58). When it is sent, it is sent from the command voltage storage circuit 61 to the variable remote control!II device 53 via the central control a device 1158 to the main motor 52.
The command voltage (4
, 5V).

In this way, the rotation speed of the processing drum 51 is increased to 45 Orp.
If the vibration monitoring sensor 57 is still in operation U even if the rotation speed has decreased to 50 m, the central control unit 58 receives the ON signal and further applies the command voltage (4V) in the same manner as above to lower the rotation. The signal is sent to the variable speed control device 53, and the main motor 52 is lowered by, for example, 400 rprn GC. When the processing drum 51 becomes 4QQrprn and the vibration monitoring sensor 57 becomes OFPK, the processing drum 51 becomes 40Q.
After deliquing operation is performed for a predetermined period of time at the same rpm, the process moves to the next step.

Depending on the type of laundry, etc., the dehydration strength can be set arbitrarily using the dehydration strength selection key 60, and the dehydration rotation speed is changed depending on the installation according to the IK vibration situation as described above.

Note that if no abnormal vibration occurs and the vibration monitoring sensor 57 does not operate, the liquid will be removed with the initial setting strength of liquid removal.

〔Effect of the invention〕

As described above, according to the present invention, even if abnormal vibration occurs due to the combination of a variable speed motor and a vibration monitoring sensor, the rotational speed for removing liquid is gradually lowered to an appropriate value without stopping the function each time. This makes it possible to increase the speed of deliquing and to increase the rotation rate of liquid removal more than before, which shortens processing time.Furthermore, less energy is required for drying in the post-process, which is highly effective in reducing running costs. be. Furthermore, by employing a variable speed control device such as an inverter, excellent effects can be achieved, such as the ability to use a dedicated motor or a dual-purpose motor for the deliquoring motor and cleaning motor.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of an example of a drive system of an apparatus that is used to carry out the method of the present invention, and FIG. FIG. 3 is a diagram for explaining the operation of an embodiment of the present invention, and FIG. 51... Processing drum, 52... Main motor, 53
...Variable speed control device, 57...Vibration monitoring sensor, 5
8...Central control unit, 59...Draining strength memory rejuvenation 6
0...Draining strength selection key, 6...Command voltage memory circuit. Applicant Sub-Agent Patent Attorney Suzue Takehiko O) Peng 1-ku 1 page

Claims (2)

[Claims] (1) A washing machine characterized in that a vibration monitoring sensor is provided in the washing machine, and the rotation speed of a motor with variable speed control that performs washing and dehydration is changed in accordance with the output of the vibration monitoring sensor. Rotation speed control method. (2) A vibration monitoring sensor that detects the vibration status of the washing machine;
A dewatering strength memory circuit transmits a predetermined number of revolutions for dewatering to the central control device using a dewatering strength selection key, and a command voltage stored in advance according to the output from the vibration monitoring sensor is used to perform cleaning and deliquoring. 1. A rotation speed control device for a washing machine, comprising: a command voltage storage circuit for transmitting a command voltage to a variable speed control device of a motor with variable speed control.