JP2007098113A - Washing machine and control method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a washing machine and a method of controlling the same, capable of reducing the noise to the maximum by performing a spin-drying process after the whole washing and rinsing processes under a low-noise state of a prescribed rpm value or lower. <P>SOLUTION: The method of controlling the washing machine comprises a step for determining whether a silent washing course is selected or not, and a step for executing the low-noise silent washing by controlling the spin-drying process so that the spin-drying process after the washing and rinsing processes is performed at a prescribed speed or lower when it is determined that the silent washing course is selected. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a washing machine and a control method thereof, and more particularly, to a washing machine and a control method thereof that can reduce the noise generated during the washing process to the maximum.

  In general, a conventional washing machine is a device that performs washing by a force that lifts and then drops laundry inside when a cylindrical rotating drum rotates, and a dehydration process after all washing and rinsing processes. (Specifically, the intermediate dehydration process after the washing and rinsing process, or the final dehydration process after the final rinsing process) is performed at a high rpm (about 800 rpm) at a predetermined speed. Due to this, a loud noise is generated.

  In order to solve the above problems, Patent Document 1 proposes a method of reducing the noise of the washing machine by minimizing the vibration generated in the dehydration process.

That is, in the above-mentioned Patent Document 1, the first rpm of the motor is set according to the biased state of the laundry in the first stage of the dehydration process, and the motor is rotated while decreasing or increasing the set first rpm within a predetermined range. After measuring the vibration amount of the motor, the method of reducing the noise was proposed by performing a dehydration process at rpm corresponding to the lowest value of the measured vibration amount. However, according to the above method, the noise generated in the intermediate dehydration process after all the washing and rinsing processes cannot be removed, and only the vibration generated in the final dehydration process after the washing and rinsing processes are completed is minimized. Therefore, when the washing machine should be operated at night, there is a problem that it cannot satisfy the demand of the user who desires low noise.
Korean Patent Application Publication No. 1999-0055473

  The present invention has been made to solve the above-described problems, and its purpose is to maximize the noise by performing the dehydration process after all washing and rinsing processes in a low noise state of a predetermined rpm or less. It is an object of the present invention to provide a washing machine and a control method thereof that can be reduced to a minimum.

  In addition, the present invention enables quiet washing by controlling the time and speed of the dehydration process so that the dehydration process after all the washing and rinsing processes is performed at a predetermined rpm or less. It is an object of the present invention to provide a washing machine capable of obtaining the same effect and a control method thereof.

  It is another object of the present invention to provide a washing machine capable of compensating the rinsing performance by controlling the dehydration maintenance time and the number of times of rinsing so that the dehydration process is performed at a predetermined rpm or less, and a control method thereof.

  Furthermore, the present invention provides a washing machine capable of blocking the noise generated in the final dewatering process and preventing wrinkles of the laundry by maintaining the rinsed state without draining the washing water to the outside in the final rinsing process. It is in providing the control method.

  In order to achieve the above object, in the method for controlling a washing machine according to the present invention, a step of determining whether or not a silent washing course is selected, and if it is determined that a silent washing course is selected, a washing and rinsing process And a step of controlling the dehydration process so that the subsequent dehydration process is performed at a predetermined speed or less, and performing low-noise quiet washing.

  In addition, the step of performing the low noise silent washing includes the step of controlling the time and speed of the dehydration process after the washing and rinsing processes.

  Further, the step of performing the low-noise silent washing includes a step of controlling a time of a dehydration step performed after the rinsing step and a number of times of rinsing in the rinsing step.

  The predetermined speed is about 100 rpm.

  In addition, the present invention may further include a step of maintaining the final rinse state without draining the wash water to the outside during the final rinsing process when it is determined that the silent washing course is selected.

  Further, in the method for controlling a washing machine according to the present invention, the dehydration process after the process of washing the laundry is performed at a predetermined speed or less for a predetermined time, thereby realizing silent washing in a low noise state. Features.

  The washing process may be a washing and rinsing process, and the predetermined speed may be about 100 rpm.

  When the rinsing process is a final rinsing process, the final rinsing state is maintained without performing the final dehydration process.

  Further, in the washing machine equipped with the motor and the drainage device according to the present invention, the signal input unit for selecting the silent washing course and the dehydration process after the washing and rinsing process are performed at a predetermined speed or less so that the silent washing course And a control unit for controlling the motor.

  The controller may control a time and a speed of a dehydration process performed after the washing and rinsing processes.

  Further, the control unit controls the time of the dehydration process after the rinsing process and the number of times of rinsing in the rinsing process.

  The controller may maintain the final rinse state without draining the wash water to the outside during the final rinse process.

  Further, in the washing machine according to the present invention, the signal input unit for selecting the silent washing course and the motor of the silent washing course so that the dehydration process after the process of washing the laundry is performed at a predetermined speed or less for a predetermined time. And a control unit for controlling.

  The process of washing the laundry is a washing and rinsing process, and the control unit maintains the final rinsing state without performing the final dehydration process when the rinsing process is the final rinsing process.

  According to the washing machine and the control method thereof according to the present invention, quiet washing is realized by controlling the dehydration process so that the dehydration process after all washing and rinsing processes is performed in a low noise state of a predetermined rpm or less. By controlling the time and speed of the dehydration process so that the dehydration process after all washing and rinsing processes is performed at a predetermined rpm or less, the same effect as the standard washing course can be obtained. is there.

  In addition, the rinsing effect can be compensated by controlling the maintenance time of the intermediate dehydration process and the number of times of rinsing so that the dehydration process is performed at a predetermined rpm or less. During the final rinsing process, the washing water can be drained to the outside. By maintaining the rinse state as it is, the noise generated in the final dehydration process is blocked and the laundry can be dried without wrinkling.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a cross-sectional view illustrating a washing machine according to an embodiment of the present invention.

  As shown in FIG. 1, a washing machine according to the present invention includes a drum-shaped water tank 11 installed inside a main body 10 for storing washing water, and a rotation installed rotatably inside the water tank 11. A drum 12.

  The water tank 11 is installed at a predetermined angle α with respect to the installation surface of the washing machine so that the front surface portion 11a having the inlet 11b is positioned higher than the rear surface portion 11c. In the same form, it is installed inside the water tank 11 so as to be inclined such that the front surface portion 12a having the inlet 12b is positioned higher than the rear surface portion 12c.

  That is, the rotation center line of the rotary drum 12 is inclined by a predetermined angle α with respect to the installation surface of the washing machine so that the front surface portion 12a provided with the inlet 12b faces the front upper part. At this time, the rotating drum 12 is in a rotatable state inside the water tank 11 by the rotation shaft 13 coupled to the center of the rear surface part 12 c being rotatably supported by the rear surface center part of the water tank 11.

  A plurality of through holes 12 d are formed on the peripheral surface of the rotary drum 12, and a plurality of lifters 14 are installed on the inner surface of the rotary drum 12 to raise and drop the laundry when the rotary drum 12 rotates. The

  Outside the rear surface portion 11 c of the water tank 11, a motor 15 is installed as a driving device for rotating a rotary shaft 13 connected to the rotary drum 12 for performing washing, rinsing and dehydrating operations. A washing heater 16 for heating the washing water supplied to the inside of the water tank 11 is installed inside the side.

  The motor 15 connects a stator 15 a fixed to the rear surface portion 11 c of the water tank 11, a rotor 15 b disposed rotatably around the outer surface of the stator 15 a, and the rotor 15 b and the rotating shaft 13. And a rotating plate 15c.

  The front surface of the main body 10 corresponds to an inlet 12b of the rotating drum 12 and an inlet 11b of the water tank 11 in order to put laundry into the rotating drum 12 and to take out laundry from the rotating drum 12. An inlet 17b is formed at a position, and a door 17 that opens and closes the inlet 17b is installed at the inlet 17b.

  A detergent supply device 18 for supplying detergent and a water supply device 20 for supplying washing water are installed in the upper part of the water tank 11, and water in the water tank 11 is drained in the lower part of the water tank 11. In order to do so, a drainage device 19 including a drain pipe 19a, a drain valve 19b, and a drain pump 19c is installed.

  The detergent supply device 18 is partitioned into a plurality of spaces. The detergent supply device 18 is installed on the front side of the main body 10 so that the user can easily put the detergent and the rinsing agent into each space.

  The water supply device 20 includes cold water and hot water water supply pipes 21 and 22 for supplying cold water and hot water, and cold water and hot water water supply pipes 21 and 22 for controlling water supply through the cold water and hot water water supply pipes 21 and 22. And water supply valves 23 and 24 to be installed.

  At this time, the cold water and hot water supply pipes 21 and 22 are connected to the detergent supply device 18 so that water supplied from the outside is supplied to the detergent supply device 18 side. A separate water supply pipe 25 for supplying water that has passed through the detergent supply apparatus 18 to the water tank 11 is installed between the detergent supply apparatus 18 and the water tank 11. A nozzle 26 is installed. With the configuration described above, the water supplied to the water tank 11 passes through the detergent supply device 18, whereby the detergent in the detergent supply device 18 is supplied to the water tank 11.

  FIG. 2 is a conceptual diagram illustrating a washing machine control system according to an embodiment of the present invention. The washing machine includes a signal input unit 100, a temperature sensing unit 110, a water level sensing unit 120, a control unit 130, and a driving unit. 140 and a speed sensing unit 150 are further included.

  The signal input unit 100 inputs operation information such as a washing course, a washing temperature, a dehydrating rpm, and a rinsing process addition selected by the user according to the material of the laundry to the control unit 130. The signal input unit 100 allows the user to select a silent washing course for controlling the rpm of the intermediate dewatering process so that the intermediate dewatering process after the washing and rinsing process is performed in a low noise state.

  The temperature sensing unit 110 senses the temperature of the washing water supplied to the water tank 11, and the water level sensing unit 120 senses the water level of the washing water supplied to the water tank 11.

  The control unit 130 is a microcomputer that controls the washing machine according to the operation information input from the signal input unit 100. When the silent washing course is selected, the dehydration process (specifically, all washing and rinsing processes) is performed. Further, the drive of the motor 15 is controlled so that the intermediate dehydration process after the washing and rinsing processes is performed at a predetermined rpm or less.

  Also, the control unit 130 controls the time and speed of the dehydration process so that the dehydration process after all washing and rinsing processes is performed at a predetermined rpm or less, so that the silent washing course has the same effect as the standard course. To be obtained. In the rinsing process, the controller 130 compensates the rinsing effect by controlling the dehydration maintenance time and the number of times of rinsing so that the dehydration process is performed at a predetermined rpm or less.

  In addition, the controller 130 controls the driving of the draining device 19 so that the washing water is not drained to the outside during the final rinsing process, and the rinsing state is maintained as it is.

  The driving unit 140 drives the motor 15, the washing heater 16, the drain valve 19 b, the drain pump 19 c, and the water supply valves 23 and 24 according to a drive control signal from the control unit 130. The speed sensing unit 150 senses the rotational speed of the motor 15 and inputs the sensed rotational speed to the control unit 130.

  Hereinafter, the operation and effect of the washing machine configured as described above and the control process of the washing machine will be described.

  FIG. 3 is a flowchart showing a method of controlling the washing machine according to the present invention for realizing quiet washing. The method of the present invention sets the silent washing process as the default so that the intermediate dehydration process after all washing and rinsing is performed in a low noise state, or only when the user presses a separate option key. It is designed to perform a silent washing process.

  When the user puts the laundry into the rotary drum 12 and selects the operation information such as the washing course, the washing temperature, the dehydration rpm, and the addition of the rinsing process according to the laundry material, the user selects the silent washing course. The driving information selected by the person is input to the control unit 130 through the signal input unit 100 (S100).

  Thereafter, the control unit 130 performs the washing and rinsing process according to the operation information input from the signal input unit 100. First, the control unit 130 determines whether or not the washing machine is on (S110).

  When it is determined that the washing machine is on, the control unit 130 switches on the water supply valves 23 and 24 so that the washing water is supplied to the detergent supply device 18 through the water supply pipes 21 and 22. The washing water supplied to the apparatus 18 side is supplied to the water tank 11 through the water supply pipe 25 (S120).

  When washing water is supplied to the water tank 11, the control unit 130 drives the motor 15 at a predetermined rpm and an operation rate (on / off ratio), whereby the rotary drum 12 is rotated. Therefore, the washing process is performed by the falling force of the laundry while thoroughly mixing the washing water and the detergent with the laundry (S130).

  After the washing process, an intermediate dehydration process is performed at a predetermined rpm (about 100 rpm) or less so that the user does not feel the rotation of the motor 15 (S140). Since the rpm of the intermediate dehydration process in the silent washing course is set lower than the rpm of the intermediate dehydration process (about 600 rpm) in the standard washing course, the noise generated in the intermediate dehydration process should be reduced to the maximum after the washing process. It can provide a quiet environment.

  After the washing process, the control unit 130 controls the predetermined maintenance time T of the intermediate dehydration process performed at a predetermined rpm or less (the rpm is controlled so that the intermediate dehydration process is performed in a low noise state, and the minimum amount of water from the laundry is reduced. It is determined whether the dewatering time (about 3 minutes) has elapsed (S150), and during the dehydration maintenance time T, an intermediate dehydration process is performed at a predetermined rpm or less.

  As described above, since the rpm (about 100 rpm) of the intermediate dehydration process in the silent washing course is much lower than the rpm (about 600 rpm) of the intermediate dehydration process in the standard washing course, the dehydration maintenance of the intermediate dehydration process in the silent washing course is maintained. Time T should be long to obtain the same performance as the standard laundry course. Therefore, the dehydration maintenance time T (about 3 minutes) is maintained.

  When it is determined that the dehydration maintenance time T has passed the predetermined time, the controller 130 controls the water supply valves 23 and 24 to perform the rinsing process, whereby rinsing water is supplied into the water tank 11 (S160). ).

  When the rinsing water is supplied to the water tank 11, the controller 130 drives the motor 15 at a predetermined rpm and operating rate (on / off ratio), so that a rinsing process is performed (S170).

  After the rinsing process, the controller 130 determines whether or not the adjusted number of rinsings has been completed (S180). The number of rinsings in the silent washing course is determined based on the amount of laundry or standard laundry based on driving information selected by the consumer. It is automatically adjusted one or more times more than the number of times the course is rinsed.

  At this time, the rpm (about 100 rpm) of the intermediate dehydration process after the rinsing process in the silent washing course is very low compared to the rpm (about 800 rpm) of the intermediate dehydration process after the rinsing process in the standard washing course. In order to obtain the same effect, the number of times of rinsing in the silent washing course should be larger than that in the standard washing course. Of course, similarly to the intermediate dehydration process after the washing process, the dehydration maintenance time T of the intermediate dehydration process after the rinsing process is also increased.

  If it is determined that the adjusted number of times of rinsing has not been completed, an intermediate dehydration process is performed at a predetermined rpm (about 100 rpm) or less so that the user does not feel the rotation of the motor 15 (S190). The rpm of the intermediate dehydration process in the silent washing course is set to be lower than the rpm (about 800 rpm) of the intermediate dehydration process in the standard washing course, and the noise generated in the intermediate dehydration process is reduced to the maximum after the rinsing process. Can provide a comfortable environment.

  After the rinsing process, the control unit 130 determines a predetermined maintenance time T of the intermediate dehydration process performed at a predetermined rpm or less (similar to the intermediate dehydration process after the washing process, so that the intermediate dehydration process is performed in a low noise state. By controlling this, it is determined whether or not the time during which the minimum amount of water can be dehydrated from the laundry (about 3 minutes) has elapsed (S200), and during the dehydration maintenance time T, an intermediate dehydration process is performed at a predetermined rpm or less.

  On the other hand, when the adjusted number of times of rinsing is completed in S180, the controller 130 stops the operation of all loads including the drainage device 19, so that the washing water is not drained to the outside, and the rinsing is performed without the final dehydration process. The state is maintained as it is (S210).

  According to the above process, the laundry can be dried without wrinkles after a predetermined time has elapsed since the washing process was completed.

  As mentioned above, although one Embodiment of the washing machine which concerns on this invention, and its control method was described, this invention is not limited to said embodiment, Unless it deviates from the technical idea of this invention, this field It can be modified in various ways by those who have ordinary knowledge.

It is sectional drawing which showed the washing machine which concerns on one Embodiment of this invention. It is the schematic which showed the control system of the washing machine which concerns on one Embodiment of this invention. 3 is a flowchart illustrating a method for controlling a washing machine according to an embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main body 11 Water tank 12 Rotating drum 13 Rotating shaft 14 Lifter 15 Motor 16 Washing heater 17 Door 18 Detergent supply device 19 Drainage device 20 Water supply device 21, 22 Cold water and hot water supply pipe 23, 24 Water supply valve 25 Water supply pipe 26 Water supply nozzle

Claims (17)

In the control method of the washing machine,
Determining whether a silent washing course has been selected;
When it is determined that the silent washing course has been selected, controlling the dehydration process so that the dehydration process after the washing and rinsing process is performed at a predetermined speed or less, and performing the low-noise silent washing,
A control method for a washing machine, comprising: The step of performing the low noise silent washing includes:
2. The method of controlling a washing machine according to claim 1, further comprising the step of controlling the time and speed of the dewatering process after the washing and rinsing processes. The step of performing the low noise silent washing includes:
The method of controlling a washing machine according to claim 1, further comprising a step of controlling a time of a dehydration process performed after the rinsing process and a number of times of rinsing of the rinsing process.   The method of claim 1, wherein the predetermined speed is about 100 rpm.   The washing machine according to claim 1, further comprising a step of maintaining the final rinse state without draining the wash water to the outside during the final rinsing process when it is determined that the silent washing course is selected. Control method. In the control method of the washing machine,
A method of controlling a washing machine, wherein a dehydration process after a process of washing laundry is performed at a predetermined speed or less for a predetermined time, thereby realizing silent washing in a low noise state.   The method of controlling a washing machine according to claim 6, wherein the washing process is a washing and rinsing process.   The method of claim 6, wherein the predetermined speed is about 100 rpm.   8. The method of controlling a washing machine according to claim 7, wherein when the rinsing process is a final rinsing process, the final rinsing state is maintained without performing a final dewatering process. In a washing machine equipped with a motor and a drainage device,
A signal input unit for selecting a silent washing course;
And a controller that controls the motor of the silent washing course so that the dehydration process after the washing and rinsing process is performed at a predetermined speed or less.   The washing machine according to claim 10, wherein the controller controls the time and speed of a dehydration process performed after the washing and rinsing processes.   The washing machine according to claim 10, wherein the control unit controls the time of the dehydration process after the rinsing process and the number of times of rinsing in the rinsing process.   The washing machine as set forth in claim 10, wherein the predetermined speed is about 100 rpm.   The washing machine according to claim 10, wherein the controller maintains the final rinse state without draining the wash water to the outside during the final rinse process. In the washing machine,
A signal input unit for selecting a silent washing course;
A washing machine comprising: a controller that controls a motor of a silent washing course by performing a dehydration process after a process of washing laundry for a predetermined time at a predetermined speed or less.   The washing machine according to claim 15, wherein the process of washing the laundry is a washing and rinsing process. The washing machine according to claim 16, wherein the control unit maintains the final rinse state without performing the final dehydration process when the rinse process is the final rinse process.

Images