CN113286921B - Vertical washing machine - Google Patents
Vertical washing machine Download PDFInfo
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- CN113286921B CN113286921B CN201980081169.5A CN201980081169A CN113286921B CN 113286921 B CN113286921 B CN 113286921B CN 201980081169 A CN201980081169 A CN 201980081169A CN 113286921 B CN113286921 B CN 113286921B
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- drum
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- unbalance
- ambient temperature
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry
- D06F23/04—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and rotating or oscillating about a vertical axis
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F33/00—Control of operations performed in washing machines or washer-dryers
- D06F33/30—Control of washing machines characterised by the purpose or target of the control
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
- D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
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- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
A vertical washing machine is provided, which can increase the capacity of the washings contained in the drum without enlarging the drum. The vertical washing machine comprises: an outer tub disposed inside the cabinet; a drum configured in the outer tub in a manner of rotating around a rotating shaft; an annular container disposed in the drum and accommodating the rolling elements; a motor for driving the drum to rotate; and a motor control unit for controlling the motor, wherein the motor control unit controls the motor to perform the following unbalance elimination control before starting the dehydration process: after the rotational speed of the drum is increased to a target rotational speed exceeding a resonance rotational speed at which lateral resonance of the drum occurs, the rotational driving of the drum is stopped.
Description
Technical Field
The present invention relates to a vertical type washing machine that performs, for example, a washing process, a rinsing process, and a dehydrating process.
Background
In the vertical washing machine, when laundry is eccentric in the drum and the drum is unbalanced after the start of a spin-drying process, the drum may vibrate and the spin-drying may not be started. Therefore, some vertical type washing machines have a balancing device for compensating for the unbalance in the drum (rotary tub) (see patent document 1).
The balancing device has a circular ring-shaped balancing case, and a liquid (aqueous solution) is sealed inside the balancing case. Thus, after the start of the dewatering process, the unbalance can be eliminated by the liquid moving to a position where the unbalance is counteracted.
Since the specific gravity of the liquid enclosed in the balance casing is small in the balancing device, the capacity of the liquid enclosed in the balance casing needs to be increased in order to suppress vibration of the drum. Therefore, if the inner space of the balance case provided in the drum is increased, the capacity of laundry accommodated in the drum is reduced.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2018-82916
Disclosure of Invention
Problems to be solved by the invention
Accordingly, an object of the present invention is to provide a vertical washing machine capable of increasing the capacity of laundry accommodated in a drum without increasing the size of the drum accommodating the laundry.
Means for solving the problems
That is, the vertical washing machine of the present invention includes: an outer tub disposed inside the cabinet; a drum disposed in the tub to be rotatable around a rotation axis; an annular container disposed in the drum and accommodating the rolling elements; a motor that rotationally drives the drum; and a control unit controlling the motor, the control unit controlling the motor to perform unbalance eliminating control before starting the dehydration process as follows: after the rotational speed of the drum is increased to a target rotational speed exceeding a resonance rotational speed at which lateral resonance of the drum occurs, the rotational driving of the drum is stopped. In the present invention, the resonant rotation speed at which the lateral resonance of the drum occurs means a resonant rotation speed at which the resonance of the drum occurs in a direction perpendicular to the rotation axis of the drum.
Preferably, in the vertical washing machine of the present invention, the annular container contains a liquid.
Preferably, the vertical washing machine according to the present invention includes an ambient temperature detection unit that detects an ambient temperature, wherein the control unit controls the motor to reduce the rotation speed of the drum based on a predetermined motor deceleration force after the rotational driving of the drum is stopped in the unbalance correction control, and the predetermined motor deceleration force when the rotation speed of the drum is reduced in the unbalance correction control is variable based on the ambient temperature detected by the ambient temperature detection unit.
Preferably, the vertical washing machine according to the present invention includes load amount detection means for detecting a load amount corresponding to an amount of laundry located in the drum, wherein in the unbalance correction control, after the rotational driving of the drum is stopped, the control means controls the motor so as to reduce the rotation speed of the drum based on a predetermined motor deceleration force, and in the unbalance correction control, the predetermined motor deceleration force at the time of reducing the rotation speed of the drum is variable based on the load amount detected by the load amount detection means.
Preferably, the vertical washing machine according to the present invention includes an ambient temperature detection means for detecting an ambient temperature, and the number of times of the unbalance correction control is variable in accordance with the ambient temperature detected by the ambient temperature detection means.
Preferably, the vertical washing machine of the present invention further includes a vibration detection unit for detecting vibration of the outer tub, and the continuation of the unbalance elimination control is determined according to the magnitude of the vibration of the outer tub detected by the vibration detection unit.
Effects of the invention
In the vertical washing machine of the present invention, the annular container for accommodating the rolling elements is disposed in the drum, and before starting the dehydration process, the following unbalance elimination control is performed: after the rotational speed of the drum is increased to a target rotational speed exceeding a resonance rotational speed at which lateral resonance of the drum occurs, the rotational driving of the drum is stopped. Therefore, the rolling elements housed in the annular container can be moved toward the opposite side of the eccentric position where the laundry in the drum is biased by the centrifugal force at the time of the unbalance correction control, thereby correcting the unbalance of the drum. The rolling elements contained in the annular container have a higher specific gravity than the liquid of the conventional liquid balancer, and therefore the annular container can be made smaller. Therefore, the capacity of the laundry accommodated in the drum can be increased without increasing the size of the drum. Further, before starting the dehydration process, the dehydration process can be started in a state in which the unbalance of the drum is eliminated by performing the unbalance elimination control.
In the vertical washing machine of the present invention, the liquid is contained in the annular container, and the speed of the liquid moving to the opposite side of the eccentric position on which the laundry in the drum is biased is high, so that the unbalance of the drum can be eliminated in a short time.
In the vertical washing machine of the present invention, the viscosity of the liquid contained in the annular container decreases as the ambient temperature increases, and increases as the ambient temperature decreases. In the imbalance elimination control, when the motor deceleration force becomes large, the amount of the rolling elements that move when the motor is accelerated returning to their original positions due to the inertial force generated by deceleration becomes large. Therefore, in order to reduce the amount of rolling element returning as much as possible during motor deceleration, the motor decelerating force is increased when the ambient temperature at which the liquid viscosity becomes high is low, and conversely, the motor decelerating force is reduced when the ambient temperature at which the liquid viscosity becomes low is high, thereby suppressing the amount of returning and improving the imbalance elimination capability.
In the vertical washing machine of the present invention, the laundry is accommodated in the drum, and the smaller the load amount corresponding to the amount of the laundry in the drum, the smaller the motor deceleration force in the unbalance elimination control. Therefore, the motor deceleration force in the imbalance elimination control can be appropriately determined according to the load amount.
In the vertical washing machine of the present invention, the viscosity of the liquid contained in the annular container decreases as the ambient temperature increases, and increases as the ambient temperature decreases. Therefore, the amount of movement of the rolling elements in the annular container during the unbalance correction control changes depending on the viscosity of the liquid. Therefore, even if the higher the ambient temperature, the fewer the number of times of unbalance elimination control, the unbalance of the drum can be eliminated. Therefore, the number of times of the unbalance elimination control can be appropriately determined according to the ambient temperature.
In the vertical washing machine of the present invention, when the vibration of the tub is small, the unbalance of the drum is small, and therefore the unbalance elimination control is ended, whereas when the vibration of the tub is large, the unbalance of the drum is large, and therefore the unbalance elimination control is continued. Therefore, whether to continue the unbalance elimination control can be appropriately determined according to the magnitude of the vibration of the outer tub.
Drawings
Fig. 1 is a schematic sectional view of a vertical type washing machine 100 according to an embodiment of the present invention.
Fig. 2 is a plan view of the ball balancer 30 of the vertical type washing machine 100 of fig. 1.
Fig. 3 is a control block diagram of the vertical type washing machine 100 of fig. 1.
Fig. 4 is a graph showing changes in the drum rotation speed after unbalance removal control performed before the start of the dehydration process and the drum rotation speed during the dehydration process.
Fig. 5 is a diagram showing the operation of the plurality of rolling elements 32 in the annular container 31 of the ball balancer 30 after the unbalance correction control is performed.
Fig. 6 is a flowchart illustrating a method of determining the number of times of unbalance elimination control according to the ambient temperature of the vertical type washing machine 100.
Fig. 7 is a flowchart illustrating a method of determining a motor deceleration force in the unbalance elimination control according to the ambient temperature of the vertical type washing machine 100.
Fig. 8 is a flowchart illustrating a method of determining a motor deceleration force in the unbalance elimination control according to the load amount of the vertical washing machine 100.
Fig. 9 is a graph showing the correspondence of the motor deceleration force in the unbalance elimination control with the ambient temperature and the load amount of the vertical washing machine 100.
Fig. 10 is a flowchart showing a method of determining whether to continue the unbalance elimination control according to the magnitude of the vibration of the outer tub 2.
Fig. 11 is a flowchart showing a washing operation of the vertical washing machine 100.
Fig. 12 is a flowchart showing a flow of the unbalance elimination control.
Fig. 13 is a flowchart showing a flow of the spin-drying process in the washing operation of the vertical washing machine 100.
Fig. 14 is a flowchart showing a flow of unbalance correction control in the vertical washing machine according to the modification of the present invention.
Description of the reference numerals
1: a box body; 2: an outer tub; 3: a drum; 7: a motor; 31: an annular container; 32: a rolling body; 33: a liquid; 51: a load amount detection unit; 55: a motor control unit; 61: an ambient temperature detection sensor; 62: a vibration detection sensor; 100: a vertical washing machine.
Detailed Description
Hereinafter, a vertical washing machine 100 according to an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a schematic sectional view of a vertical type washing machine 100 according to an embodiment of the present invention.
The vertical washing machine 100 (hereinafter, may be referred to as a washing machine 100) includes a casing 1 as a washing machine main body, and an outer tub 2 having a bottomed cylindrical shape is suspended and supported by a plurality of suspension rods (not shown) inside the casing 1. Inside the tub 2, a drum 3 having many water passage holes in its periphery is rotatably supported around a support shaft 4 fixed to its bottom wall. A stirring blade 5 is provided at the bottom of the drum 3, and the stirring blade 5 is rotatable about an inner shaft 6 inserted into the support shaft 4.
The rotational driving force of the motor 7 mounted on the lower surface of the outer tub 2 is transmitted to the support shaft 4 and the inner shaft 6 via a transmission mechanism including a small pulley 9 fixed to the motor shaft 8, a V belt 10, a large pulley 11, and the like, and a power switching mechanism 14 including a clutch mechanism 12 and a torque motor 13.
The clutch mechanism 12 releases the connection between the large pulley 11 and the support shaft 4 in accordance with the operation of the torque motor 13, and rotates the stirring blade 5 in one direction or in both directions via the inner shaft 6, mainly during the washing operation and the rinsing operation. On the other hand, during the dehydration operation, the clutch mechanism 12 connects the large pulley 11 to the support shaft 4, and rotates the drum 3 and the paddle 5 in one direction integrally.
A water supply pipe 15 connected to an external faucet is disposed at the rear of the upper portion of the cabinet 1, and when the water supply valve 16 is opened, water introduced through the water supply pipe 15 flows into a water injection port 17 having a detergent container and is injected into the outer tub 2. On the other hand, a drain port 18 is provided at the bottom of the outer tub 2, and a drain pipe 19 connected to the drain port 18 is opened and closed by a drain valve 20.
The opening and closing operation of the drain valve 20 is linked with the operation of the clutch mechanism 12, and when the stirring blade 5 is separated from the drum 3 and is in a state of being rotatable alone, the drain valve 20 is closed, and when the stirring blade 5 and the drum 3 are in a state of being rotated integrally, the drain valve 20 is opened.
A cover body 22 is provided to be openable and closable at an inlet 21 for laundry opened in the upper surface of the cabinet 1. A safety device 24 is provided in front of the upper portion in the case 1. The safety device 24 is a device in which a lid opening/closing detection device that detects opening/closing of the lid 22 shown in fig. 2 and a lid locking device that locks the lid 22 in a closed state to prohibit the lid from being opened are integrated.
An ambient temperature detection sensor 61 for detecting an ambient temperature of the washing machine 100 and a vibration detection sensor 62 for detecting vibration of the outer tub 2 are disposed in the cabinet 1. The vibration detection sensor 62 is disposed below the tub 2 in the casing 1, and can detect that the vibration of the tub 2 is equal to or greater than a threshold value.
A ball balancer 30 is provided near an opening 3a formed at the upper end of the drum 3. The ball balancer 30 has an annular container 31, and a plurality of rolling elements 32 and a liquid 33 as moving bodies are accommodated in the annular container 31. The annular container 31 is provided inside the opening 3a of the drum 3 such that the rotation axis thereof coincides with the rotation axis of the drum 3.
The rolling elements 32 are metal balls, and the liquid 33 is, for example, silicone oil (manufactured by shin-Etsu chemical Co., ltd.: shin-Etsu silicone KF-96-350 CS). The rolling elements 32 are not limited to spherical balls as long as they are in a rolling shape. Oils such as silicone oil can be used for the liquid 33, but the kind of liquid is not limited.
Fig. 2 (base:Sub>A) isbase:Sub>A plan view of the ball balancer 30, and fig. 2 (b) isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 2 (base:Sub>A). The annular container 31 has an annular shape and has an outer peripheral surface 31a and an inner peripheral surface 31b. The rolling elements 32 and the liquid 33 are accommodated so as to be movable over the entire circumference in the annular container 31.
The diameter of the rolling elements 32 is slightly smaller than the distance between the outer circumferential surface 31a and the inner circumferential surface 31b of the annular container 31. Therefore, although fig. 2 (b) shows a state in which the rolling elements 32 are in contact with the outer peripheral surface 31a of the annular container 31, a gap D (for example, 1 mm) is formed between the rolling elements 32 and the inner peripheral surface 31b of the annular container 31.
The height dimension of the annular container 31 (dimension of a space in which the plurality of rolling elements 32 and the liquid 33 are accommodated) is smaller than the height dimension of the annular container in which the liquid is accommodated in the conventional liquid balancer.
Fig. 3 is a control block diagram of the washing machine 100 of the present embodiment. As shown in fig. 3, the control unit 50 of the washing machine 100 is constituted by, for example, a microcomputer or the like, and includes: a CPU, a ROM storing a program for controlling the operation of the washing machine 100, and a RAM temporarily storing data and the like used when the program is executed. The operation of the washing machine 100 is controlled by the control unit 50.
In the vertical washing machine 100 of the present embodiment, the control unit 50 controls the motor 7 to perform each operation of the washing course, the rinsing course, and the spin-drying course, but before starting the spin-drying course, controls the motor 7 to perform the following unbalance elimination control: after the rotational speed of the drum 3 is increased to reach a target rotational speed exceeding a resonance rotational speed at which the lateral resonance of the drum 3 occurs, the rotational driving of the drum 3 is stopped. In the present embodiment, the control unit 50 performs the unbalance elimination control a predetermined number of times before starting the dewatering process. The predetermined number of times is, for example, 3 times.
The resonance rotation speed at which the lateral resonance of the drum 3 occurs is a resonance rotation speed at which the resonance of the drum 3 occurs in a direction perpendicular to the rotation axis of the drum 3, and is, for example, 70rpm to 90rpm. Therefore, the target rotational speed exceeding the resonance rotational speed is, for example, a rotational speed of 100rpm to 150 rpm.
Fig. 4 is a graph showing a change in the rotational speed of the drum after the unbalance removal control is performed before the start of the spin-drying process and a change in the rotational speed of the drum during the spin-drying process. Fig. 4 shows a case where three unbalance correction controls are performed before the start of the dewatering process. Fig. 5 is a diagram showing the operation of the plurality of rolling elements 32 in the annular container 31 of the ball balancer 30 after the unbalance correction control is performed.
In the present embodiment, the following will be explained: in a state where drum 3 is stopped, as shown in fig. 5, the laundry in drum 3 is biased toward the left side of the bottom of drum 3 and the eccentric position is located at the left side of drum 3, and the unbalance elimination control is performed.
Fig. 5 (a) shows a state in which the laundry located in drum 3 is biased toward the left side portion of the bottom of drum 3 and the plurality of rolling elements 32 are located around the eccentric position at which the laundry is biased, in a state in which drum 3 is stopped at time 0. Therefore, the drum 3 is in an unbalanced state.
At time 0, the control unit 50 starts controlling the motor 7 so that the drum rotation speed is increased to 100rpm, which is the target rotation speed. The target rotation speed, i.e., the rotation speed of 100rpm is a rotation speed exceeding the resonance rotation speed at which the lateral resonance of the drum 3 is generated. The rotational speed acceleration when the rotational speed of the drum 3 is 0rpm to 100rpm is 80rpm/s. In the present embodiment, in the unbalance correction control, the rotation acceleration when the drum rotation speed is increased to the target rotation speed is 40rpm/s or more. The larger the drum rotational speed acceleration in the unbalance correction control, the larger the moving amount of the rolling elements 32.
Then, as the rotation speed of the drum 3 increases, the plurality of rolling elements 32 move along the outer circumferential surface of the annular container 31 toward the rotation direction side of the drum 3 in the annular container 31 by centrifugal force as shown in fig. 5 (b). That is, as the rotation speed of the drum 3 increases, the plurality of rolling elements 32 in the annular container 31 move toward the opposite side of the eccentric position on which the laundry in the drum 3 is biased.
At time t1, when the drum rotation speed reaches 100rpm, which is the target rotation speed, the control unit 50 controls the motor 7 to stop the rotational driving of the drum 3. As shown in fig. 4, after stopping the rotational driving of the drum 3, the drum rotation speed is increased to 120rpm by the inertial force, and thereafter, the control unit 50 controls the motor 7 so that the drum rotation speed is decreased by a predetermined motor deceleration force. At time t3, when the drum rotation speed decreases to 0, the first unbalance elimination control ends. In the present embodiment, the unbalance elimination control is performed to reduce the drum rotation speed to a rotation speed lower than the resonance rotation speed at which the lateral resonance of the drum 3 occurs.
When the drum rotation speed decreases to 0 at time t2, the control unit 50 starts controlling the motor 7 again so that the drum rotation speed increases to 100rpm, which is the target rotation speed. At time t3, when the drum rotation speed reaches 100rpm, which is the target rotation speed, the control unit 50 controls the motor 7 to stop the rotational driving of the drum 3. Then, the control unit 50 controls the motor 7 so that the drum rotation speed is reduced by a predetermined motor deceleration force. At time t4, when the drum rotation speed decreases to 0, the second unbalance elimination control ends.
Thereafter, at time t4, the controller 50 starts controlling the motor 7 again to increase the drum rotation speed to 100rpm, which is the target rotation speed, and at time t5, when the drum rotation speed reaches 100rpm, which is the target rotation speed, the controller 50 controls the motor 7 to stop the rotational driving of the drum 3, as described above. Then, the control unit 50 controls the motor 7 so that the drum rotation speed is reduced by a predetermined motor deceleration force. At time t6, when the drum rotation speed decreases to 0, the third unbalance elimination control ends.
As described above, when the first unbalance correction control is completed, as shown in fig. 5 (b), the plurality of rolling elements 32 move in the annular container 31 toward the opposite side of the eccentric position to which the laundry in the drum 3 is biased, but do not move to the position completely opposed to the eccentric position. After that, when the second unbalance correction control and the third unbalance correction control are completed, the plurality of rolling elements 32 move to positions completely opposed to the eccentric positions in the annular container 31 as shown in fig. 5 (c).
In the present embodiment, the control unit 50 performs the third unbalance elimination control to start the spin-drying process in a state where the balance of the drum 3 is optimized. When the control unit 50 cannot optimize the balance of the drum 3 by performing the unbalance removal control three times, the unbalance rinsing is performed. The unbalanced rinsing is an operation of supplying a predetermined amount of water into the drum 3 and rotating the paddle 5 to disentangle the laundry in the drum 3 when the unbalance is not eliminated by performing the unbalance elimination control three times. When the unbalance removal control is not completed for the predetermined number of times even if the unbalance rinsing is performed for the predetermined number of times, the control unit 50 displays an error on a display unit, not shown. The number of times of rinsing is specified to be, for example, two times.
The control portion 50 has a load amount detection portion 51, a number determination portion 52, a motor deceleration force determination portion 53, a continuation determination portion 54, and a motor control portion 55. The control unit 50 is connected to an ambient temperature detection sensor 61, a vibration detection sensor 62, and the motor 7.
The number-of-times determination unit 52 determines the number of times (predetermined number of times) of unbalance elimination control performed before the start of the dewatering process. In the present embodiment, the number of times determination unit 52 determines the number of times of unbalance correction control based on the ambient temperature (air temperature) of washing machine 100.
Fig. 6 is a flowchart illustrating a method of determining the number of times of the unbalance elimination control according to the ambient temperature of the washing machine 100.
< step S1, S2 >
In step S1, the control unit 50 determines whether or not the ambient temperature detected by the ambient temperature detection sensor 61 is within a range of 5 to 10 ℃. When the control unit 50 determines that the ambient temperature is within the range of 5 to 10 ℃, the process proceeds to step S2, and the number of times of imbalance elimination control is determined to be five.
< step S3, S4 >
When the control unit 50 determines in step S1 that the ambient temperature is not within the range of 5 to 10 ℃, the process proceeds to step S3, and the control unit 50 determines whether or not the ambient temperature detected by the ambient temperature detection sensor is within the range of 10 to 20 ℃. When the control unit 50 determines that the ambient temperature is within the range of 10 to 20 ℃, the process proceeds to step S4, and the number of times of imbalance elimination control is determined to be four times.
< step S5 >
When the control unit 50 determines in step S3 that the ambient temperature is not within the range of 10 to 20 ℃, the routine proceeds to step S5, and the number of times of imbalance elimination control is determined to be three.
As described above, the number of times of the unbalance elimination control is determined by the number of times determination part 52 according to the ambient temperature of the washing machine 100, and the viscosity of the liquid 33 of the ball balancer 30 becomes smaller as the ambient temperature becomes higher and becomes larger as the ambient temperature becomes lower. Therefore, when the unbalance correction control is performed, the amount of movement of the rolling elements 32 in the annular container 31 changes according to the viscosity of the liquid 33. Therefore, even if the higher the ambient temperature, the fewer the number of times of unbalance elimination control, the unbalance of the drum 3 can be eliminated. Therefore, the number of times determination portion 52 determines the number of times of unbalance elimination control to be a small value as the ambient temperature becomes higher, and to be a large value as the ambient temperature becomes lower.
The motor deceleration force determination portion 53 determines the motor deceleration force in the imbalance elimination control. The motor deceleration force in the unbalance correction control corresponds to the deceleration acceleration for decelerating the drive shaft of the motor 7 when the drum rotation speed is reduced in the unbalance correction control. Specifically, motor decelerating force determination portion 53 determines the motor decelerating force in the imbalance elimination control based on the ambient temperature of washing machine 100 and the load amount corresponding to the amount of laundry in drum 3.
Fig. 7 is a flowchart illustrating a method of determining a motor deceleration force in the unbalance elimination control according to the ambient temperature of the washing machine 100.
< Steps S101, S102 >)
In step S101, the control unit 50 determines whether or not the ambient temperature detected by the ambient temperature detection sensor 61 is within a range of 5 to 15 ℃. When the control unit 50 determines that the ambient temperature is within the range of 5 to 15 ℃, the routine proceeds to step S102, and the motor deceleration force in the imbalance elimination control is determined as a first value.
< step S103, S104 >)
When the control unit 50 determines in step S101 that the ambient temperature is not within the range of 5 to 15 ℃, the process proceeds to step S103, and the control unit 50 determines whether or not the ambient temperature detected by the ambient temperature detection sensor 61 is within the range of 15 to 30 ℃. When the control unit 50 determines that the ambient temperature is within the range of 15 to 30 ℃, the routine proceeds to step S104, and the motor deceleration force in the imbalance elimination control is determined as a second value.
< step S105 >
When the control unit 50 determines in step S103 that the ambient temperature is not within the range of 15 to 30 ℃, the routine proceeds to step S105, where the motor deceleration force in the imbalance elimination control is determined to be the third value.
As described above, the motor decelerating force determination portion 53 determines the motor decelerating force in the imbalance elimination control according to the ambient temperature of the washing machine 100, and the viscosity of the liquid 33 of the ball balancer 30 becomes smaller as the ambient temperature becomes higher and becomes larger as the ambient temperature becomes lower. In the imbalance elimination control, when the motor deceleration force becomes large, the amount of the rolling elements 32 that move when the motor is accelerated to return to the original position becomes large due to the inertial force generated by deceleration. Therefore, in order to reduce the amount of return of the rolling elements 32 as much as possible during motor deceleration, the motor deceleration force is increased when the ambient temperature at which the liquid viscosity becomes high is low, and conversely, the motor deceleration force is reduced when the ambient temperature at which the liquid viscosity becomes low is high, thereby suppressing the amount of return and improving the imbalance elimination capability.
Fig. 8 is a flowchart illustrating a method of determining a motor deceleration force in the unbalance elimination control according to the load amount of the washing machine 100.
< Steps S201, S202 >
In step S201, the control unit 50 determines whether or not the load amount detected by the load amount detection unit 51 is within a range of 0% to 30% of the rated load. When the control unit 50 determines that the load amount is within the range of 0% to 30% of the rated load amount, the process proceeds to step S202, and the motor deceleration force in the imbalance elimination control is determined as the fourth value.
< Steps S203, S204 >
When the control unit 50 determines in step S201 that the load amount is not within the range of 0% to 30% of the rated load, the process proceeds to step S203, and the control unit 50 determines whether or not the load amount detected by the load amount detection unit 51 is within the range of 30% to 70% of the rated load. When the control unit 50 determines that the load amount is within the range of 30% to 70% of the rated load amount, the process proceeds to step S204, and the control unit 50 determines the motor deceleration force in the imbalance elimination control as a fifth value.
< step S205 >
When the control unit 50 determines in step S203 that the load amount is not within the range of 30% to 70% of the rated load amount, the routine proceeds to step S205, where the motor deceleration force during the imbalance elimination control is determined as a sixth value.
As described above, the motor decelerating force determining unit 52 determines the motor decelerating force in the unbalance correction control based on the load amount corresponding to the amount of laundry in the drum 3, and decreases the motor deceleration for decreasing the drum rotation speed as the amount of laundry in the drum 3 decreases. Therefore, the motor decelerating force determination portion 52 determines the motor decelerating force in the imbalance cancellation control to be a value that becomes larger as the load amount becomes larger, and to be a value that becomes smaller as the load amount becomes smaller.
In the above-described flowcharts of fig. 7 and 8, the determination of the motor deceleration force in the unbalance correction control as the first to sixth values is described, and fig. 9 shows the correspondence between the motor deceleration force in the unbalance correction control and the ambient temperature and the load amount of the washing machine 100. As described above, the motor deceleration force in the unbalance elimination control is determined to be a small value as the ambient temperature becomes higher, and therefore, in fig. 9, the motor deceleration force a 11 Motor deceleration force a 12 Motor deceleration force a 13 Motor deceleration force a 21 Motor deceleration force a 22 Motor deceleration force a 23 Motor deceleration force a 31 Motor deceleration force a 32 Motor deceleration force a 33 。
Further, the motor deceleration force in the unbalance elimination control is determined to be a large value as the load amount corresponding to the amount of laundry in the drum 3 becomes larger, and therefore, in fig. 9, the motor deceleration force a is determined to be a large value 11 < motor deceleration force a 21 < force of deceleration of motor a 31 Motor deceleration force a 12 < force of deceleration of motor a 22 < force of deceleration of motor a 32 Motor deceleration force a 13 < force of deceleration of motor a 23 < force of deceleration of motor a 33 。
The continuation determination portion 54 determines whether or not to continue the unbalance elimination control. In the present embodiment, the continuation determination unit 54 determines whether or not to continue the unbalance correction control based on the magnitude of the vibration of the outer tub 2 detected by the vibration detection sensor 62. Specifically, when the unbalance correction control is performed, the continuation determination unit 54 determines to continue the unbalance correction control when the vibration of the tub 2 detected by the vibration detection sensor 62 is larger than a threshold value, and determines to end the unbalance correction control when the magnitude of the vibration of the tub 2 detected by the vibration detection sensor 62 is within the threshold value.
Fig. 10 is a flowchart showing a method of determining whether to continue the unbalance elimination control according to the magnitude of the vibration of the outer tub 2.
< step S301 >
In step S301, the control unit 50 determines whether or not the vibration of the tub 2 is within a threshold value.
< step S302 >)
When the control unit 50 determines that the vibration of the tub 2 is within the threshold value, the process proceeds to step S302, and determines to end the imbalance elimination control.
< step S303 >
If the control unit 50 determines in step S301 that the vibration of the tub 2 is not within the threshold value, the process proceeds to step S303, and the control unit 50 determines to continue the imbalance elimination control.
The vertical washing machine 100 of the present embodiment includes the vibration detection sensor 62 as vibration detection means for detecting the vibration of the outer tub 2, and determines continuation of the unbalance elimination control based on the magnitude of the vibration of the outer tub 2 detected by the vibration detection sensor 62.
Thus, in vertical washing machine 100 according to the present embodiment, when the vibration of outer tub 2 is small, the unbalance elimination control is ended because the unbalance of drum 3 is small, whereas when the vibration of outer tub 2 is large, the unbalance elimination control is continued because the unbalance of drum 3 is large. Therefore, whether to continue the unbalance elimination control can be appropriately determined according to the magnitude of the vibration of the tub 2.
A washing operation of the washing machine 100 will be described with reference to fig. 11.
< step S401 >
In step S401, when the user puts laundry into drum 3, sets the laundry appropriately, and presses the start key, control unit 50 executes the load amount detection process. The control part 50 determines the washing water level determined as a plurality of stages according to the load amount.
< step S402 >
In step S402, the washing water level is determined and a substantial washing process is performed, and in order to start the washing process, controller 50 opens water supply valve 16 to supply water into drum 3 to the predetermined water level, and performs a washing operation by rotating paddle 5 in one or both directions at a predetermined speed. When the washing process is finished, the control unit 50 drives the torque motor 13 to open the drain valve 20, and drains the water in the drum 3.
< step S403 >
In step S403, the control unit 50 executes imbalance elimination control. The flow of the imbalance elimination control will be described in detail later.
< step S404 >)
Then, in step S404, the control unit 50 rotates the drum 3 at a high speed to perform intermediate dewatering. By this intermediate dehydration, the detergent water penetrating into the laundry is scattered and removed.
< step S405 >
In step S405, the control unit 50 performs the spin rinsing as the first rinsing. The dehydration rinse is a rinse as follows: by spraying water from the water inlet 17 onto the laundry while rotating the drum 3, the laundry absorbs clean water and pushes out detergent water penetrating into the laundry instead.
< step S406 >
In step S406, the control unit 50 executes imbalance elimination control. The flow of the unbalance correction control will be described in detail later.
< step S407 >
Then, in step S407, after the laundry is sufficiently hydrated, the control unit 50 performs intermediate dehydration to scatter the water permeating into the laundry, as in step S404.
< step S408 >
In step S408, the control unit 50 supplies a predetermined amount of water into the drum 3 as the second rinsing, and performs the rinsing with accumulated water by rotating the paddle 5 as in the case of the washing process in step S402. When the impounded rinsing is completed, the control unit 50 opens the drain valve 20 to drain the water in the drum 3.
< step S409 >
In step S409, the control unit 50 executes imbalance elimination control. The flow of the imbalance elimination control will be described in detail later.
< step S410 >
Then, in step S410, the control part 50 performs final dehydration by rotating the drum 3 at a high speed, like the intermediate dehydration.
The above operation is the most standard operation, and the contents of each process, for example, the water storage rinsing is performed instead of the spin rinsing, and the water injection rinsing is performed instead of the water storage rinsing, can be appropriately changed according to the operation mode and various settings of the user.
The procedure of the unbalance correction control will be described with reference to fig. 12.
< step S501 >
In step S501, the control unit 50 determines the number of times of imbalance elimination control based on the flow shown in fig. 6.
< step S502 >)
In step S502, the control unit 50 determines the motor deceleration force in the imbalance elimination control as shown in fig. 9 based on the flow shown in fig. 7 and 8.
< step S503 >
In step S503, the control unit 50 starts imbalance elimination control. Therefore, the control unit 50 starts to control the motor 7 to increase the drum rotation speed to the target rotation speed, and accelerate the drum rotation speed.
< step S504 >
In step S504, the control unit 50 detects the vibration of the tub 2 by the vibration detection sensor 62. The control part 50 continuously detects the vibration of the tub 2 during the rise of the drum rotation speed.
< step S505 >
In step S505, the control unit 50 determines whether or not the drum rotation speed has reached the target rotation speed. When the control unit 50 determines that the drum rotation speed has not reached the target rotation speed, the process proceeds to step S503, and the control unit 50 continues to control the motor 7 so as to increase the rotation speed of the drum 3 to the target rotation speed.
< step S506 >
When the control unit 50 determines in step S505 that the drum rotation speed has reached the target rotation speed, the process proceeds to step S506, and after stopping the rotational driving of the drum 3, the control unit 50 starts controlling the motor 7 so as to reduce the drum rotation speed.
< step S507 >
In step S507, the control unit 50 determines whether to continue the unbalance elimination control based on the flow shown in fig. 10. In the flowchart shown in fig. 10, when the control unit 50 determines that the unbalance correction control is to be ended, the flow returns to the flow shown in fig. 11, and the control unit 50 executes the intermediate dewatering process or the final dewatering process.
< step S508 >
In the flow shown in fig. 10, when the control unit 50 determines to continue the unbalance correction control, the flow proceeds to step S508, and the control unit 50 determines whether the unbalance correction control is completed a predetermined number of times.
When the control unit 50 determines in step S508 that the unbalance correction control has not been completed the predetermined number of times, the routine proceeds to step S503, and the unbalance correction control is executed again.
< step S509 >
When the control unit 50 determines in step S508 that the unbalance correction control is completed the predetermined number of times, the process proceeds to step S509, and the control unit 50 performs the unbalance rinsing. After that, the process proceeds to step S510.
< step S510 >
In step S510, the control unit 50 determines whether or not the unbalanced rinsing is completed for a predetermined number of times of rinsing. If the control unit 50 determines in step S510 that the unbalance rinsing is not completed for the predetermined number of times of rinsing, the flow proceeds to step S501, and the unbalance correction control is executed again.
< step S511 >
When the control unit 50 determines in step S510 that the unbalanced rinsing is completed for the predetermined number of times of rinsing, the flow proceeds to step S511, and the control unit 50 displays an error on a display unit, not shown.
The operation of the spin-drying process in the washing operation of the washing machine 100 will be described with reference to fig. 13.
< step S601 >
In step S601, the control unit 50 increases the drum rotation speed to a first rotation speed (for example, 50 rpm). In the present embodiment, the first rotation speed is set to a rotation speed of 100rpm or less, and the drum rotation speed is increased to the first rotation speed to rotate the drum 3, whereby the plurality of rolling elements 32 are arranged at the final optimum positions completely opposed to the eccentric positions where the laundry in the drum 3 is biased, and then the dehydration is started.
< step S602 >
In step S602, the control unit 50 determines whether the drum rotation speed is in the first rotation speed state for a first predetermined time. When the control unit 50 determines that the drum is not operated at the first rotation speed for the first predetermined time, the drum rotation speed continues at the first rotation speed.
< step S603 >
When the control unit 50 determines in step S602 that the drum is operated at the first rotation speed for the first predetermined time, the process proceeds to step S603, and the control unit 50 increases the drum rotation speed to the second rotation speed (for example, 170 rpm).
< step S604 >
In step S604, the control unit 50 determines whether the drum rotation speed is in the second rotation speed state for a second predetermined time. When the control unit 50 determines that the drum is not operated at the second rotation speed for the second predetermined time, the drum rotation speed continues at the second rotation speed.
< step S605 >
If the control unit 50 determines in step S604 that the drum is operated at the second rotation speed for the second predetermined time, the process proceeds to step S605, and the control unit 50 increases the drum rotation speed to the third rotation speed (for example, 350 rpm).
< step S606 >
In step S606, the control unit 50 determines whether the drum rotation speed is in the third rotation speed state for a third predetermined time. When the control unit 50 determines that the drum is not operated at the third rotation speed for the third predetermined time, the drum rotation speed continues at the third rotation speed.
< step S607 >
When the control unit 50 determines in step S606 that the drum is operated at the third rotation speed for the third predetermined time, the process proceeds to step S607, and the control unit 50 increases the drum rotation speed to the fourth rotation speed (for example, 800 rpm).
< step S608 >
In step S608, the control unit 50 determines whether the drum rotation speed is in the fourth rotation speed state for a fourth predetermined time. When the control unit 50 determines that the drum is not operated at the fourth rotational speed for the fourth predetermined time, the drum rotational speed continues at the fourth rotational speed.
In step S608, the control unit 50 determines that the operation is performed at the fourth rotation speed for the fourth predetermined time, and ends the dehydration process.
The drum rotational speed acceleration is 40rpm/s when the rotational speed of the drum 3 is 0rpm to 50rpm, 80rpm/s when the rotational speed of the drum 3 is 50rpm to 170rpm, and 10rpm/s when the rotational speed of the drum 3 is 170rpm to 350 rpm.
The vertical washing machine 100 of the present embodiment includes: an outer tub 2 disposed inside the cabinet 1; a drum 3 disposed in the tub 2 so as to be rotatable around a rotation axis; an annular container 31 disposed on the drum 3 and accommodating a plurality of rolling elements 32 and a liquid 33; a motor 7 for rotationally driving the drum 3; and a motor control unit 55 as a control means for controlling the motor 7 to perform imbalance elimination control by controlling the motor 7 before starting the dewatering process as follows: after the rotational speed of the drum 3 is increased to a target rotational speed exceeding a resonance rotational speed at which the lateral resonance of the drum 3 occurs, the rotational driving of the drum 3 is stopped.
Thus, in the vertical washing machine 100 of the present embodiment, the annular container 31 accommodating the plurality of rolling elements 32 is disposed in the drum 3, and before the start of the spin-drying process, the following unbalance elimination control is performed: after the rotational speed of the drum 3 is increased to reach a target rotational speed exceeding a resonance rotational speed at which lateral resonance of the drum 3 occurs, the rotational driving of the drum 3 is stopped. Therefore, the plurality of rolling elements 32 housed in the annular container 31 are moved by the centrifugal force at the time of the unbalance correction control toward the opposite side of the eccentric position where the laundry in the drum 3 is biased, thereby correcting the unbalance of the drum 3. The rolling elements 32 contained in the annular container 31 have a higher specific gravity than the liquid of the conventional liquid balancer, and therefore the annular container 31 can be made smaller. Therefore, the capacity of the laundry that can be stored in the drum 3 can be increased without increasing the size of the drum 3. Further, by performing the unbalance elimination control before starting the dehydration process, the dehydration process can be started in a state where the unbalance of the drum 3 is eliminated.
In the vertical washing machine 100 of the present embodiment, the liquid is contained in the annular container 31. Accordingly, in the vertical washing machine 100 of the present embodiment, since the liquid is contained in the annular container 31 and the speed at which the liquid moves toward the opposite side of the eccentric position on which the laundry in the drum 3 is biased is high, the unbalance of the drum 3 can be eliminated in a short time.
The vertical washing machine 100 of the present embodiment includes the ambient temperature detection sensor 61 as ambient temperature detection means for detecting the ambient temperature, and the motor control unit 55 as control means controls the motor 7 to reduce the rotation speed of the drum 3 based on the predetermined motor deceleration force after stopping the rotational drive of the drum 3 in the unbalance elimination control, and the predetermined motor deceleration force when reducing the rotation speed of the drum 3 in the unbalance elimination control can be changed based on the ambient temperature detected by the ambient temperature detection sensor 61.
Thus, in the vertical washing machine 100 of the present embodiment, the viscosity of the liquid 33 contained in the annular container 31 decreases as the ambient temperature increases, and increases as the ambient temperature decreases. In the imbalance elimination control, when the motor deceleration force becomes large, the amount of the rolling elements that move when the motor is accelerated returning to their original positions due to the inertial force generated by deceleration becomes large. Therefore, in order to reduce the amount of rolling element returning as much as possible during motor deceleration, the motor decelerating force is increased when the ambient temperature at which the liquid viscosity becomes high is low, and conversely, the motor decelerating force is reduced when the ambient temperature at which the liquid viscosity becomes low is high, thereby suppressing the amount of returning and improving the imbalance elimination capability.
The vertical washing machine 100 of the present embodiment includes a load amount detection unit 51 as load amount detection means for detecting a load amount corresponding to the amount of laundry in the drum 3, and the motor control unit 55 as control means controls the motor 7 to reduce the number of revolutions of the drum 3 based on a predetermined motor deceleration force after stopping the rotational driving of the drum 3 in the unbalance elimination control, and the motor deceleration force at the time of reducing the number of revolutions of the drum 3 in the unbalance elimination control can be changed based on the load amount detected by the load amount detection unit 51.
Thus, in the vertical washing machine 100 of the present embodiment, although the laundry is stored in the drum 3, the imbalance of the drum 3 can be eliminated even if the motor deceleration force in the imbalance elimination control is reduced as the amount of the laundry in the drum 3 is reduced. Therefore, the motor deceleration force in the imbalance elimination control can be appropriately determined according to the load amount.
The vertical washing machine 100 of the present embodiment includes the ambient temperature detection sensor 61 as ambient temperature detection means for detecting the ambient temperature, and the number of times of the unbalance correction control can be changed in accordance with the ambient temperature detected by the ambient temperature detection sensor 61.
Thus, in the vertical washing machine 100 of the present embodiment, the viscosity of the liquid 33 contained in the annular container 31 decreases as the ambient temperature increases, and increases as the ambient temperature decreases. Therefore, the amount of movement of the rolling elements 32 in the annular container 31 during the unbalance correction control changes according to the viscosity of the liquid 33. Therefore, even if the higher the ambient temperature, the fewer the number of times of unbalance elimination control, the unbalance of the drum 3 can be eliminated. Therefore, the number of times of the unbalance elimination control can be appropriately determined according to the ambient temperature.
Although the embodiments of the present invention have been described above, the specific configurations of the respective portions are not limited to the above-described embodiments.
For example, in the above embodiment, the washing machine 100 includes the vibration detection sensor 62, and the continuation determination unit 54 determines whether or not to continue the unbalance correction control based on the magnitude of the vibration of the outer tub 2 detected by the vibration detection sensor 62, but the present invention is not limited thereto.
Fig. 14 is a flowchart showing a flow of unbalance correction control in the vertical washing machine according to the modification of the present invention. Therefore, as shown in fig. 14, in the case where the washing machine according to the modified example of the present invention does not include the vibration detection sensor 62, the unbalance elimination control may be terminated after the rotation determination unit 53 has performed the number of times.
Fig. 14 shows a flow of unbalance correction control in the vertical washing machine according to the modification of the present invention, but the contents of steps S701 to S706 in the flowchart of fig. 14 are the same as those of steps S501 to S503, S505, S506, and S508 in the flowchart of fig. 12, and detailed description thereof is omitted.
In the above embodiment, the motor deceleration force in the unbalance elimination control is determined according to the ambient temperature and the load amount of the washing machine 100, but is not limited thereto. Therefore, the motor deceleration force in the unbalance elimination control can be determined only according to the ambient temperature of the washing machine 100. Further, the motor deceleration force in the unbalance elimination control may also be determined only based on the load amount.
In the above embodiment, the case where the unbalance correction control is performed in the state where the drum 3 is stopped and the plurality of rolling elements 32 are located around the eccentric position where the laundry in the drum 3 is biased has been described, but the unbalance correction control may be performed in the state where the drum 3 is stopped and the plurality of rolling elements 32 are located at arbitrary positions with respect to the eccentric position where the laundry in the drum 3 is biased.
In the above embodiment, the unbalance correction control is performed three times before the start of the spin-drying process, and the target rotation speed in the unbalance correction control for three times is the same. Further, in the case where the imbalance elimination control is performed a plurality of times, the target rotation speed may be changed every time the imbalance elimination control is performed. For example, the target rotation speed may be increased every time the unbalance correction control is performed, with the target rotation speed in the first unbalance correction control set to 100rpm, the target rotation speed in the second unbalance correction control set to 120rpm, and the target rotation speed in the third unbalance correction control set to 150 rpm.
Accordingly, as the target rotation speed in the unbalance correction control increases, the amount of movement of the rolling elements 32 in the annular container 31 when the unbalance correction control is performed increases, and thus the unbalance of the drum 3 is easily corrected. However, as the rotation speed of the drum 3 increases, the energy of the tub 2 also increases, and thus the impact when the tub 2 collides with the frame increases. Therefore, it is difficult to initially increase the target rotation speed in the imbalance elimination control. When the unbalance correction control is performed a plurality of times, the target rotation speed in the unbalance correction control to be performed later can be increased because the unbalance of the drum 3 becomes small each time the unbalance correction control is performed. Therefore, when the unbalance correction control is performed a plurality of times, the target rotation speed in the unbalance correction control performed later can be made larger than the target rotation speed in the unbalance correction control performed earlier, and the unbalance of the drum 3 can be effectively corrected.
In the above embodiment, the annular container 31 of the ball balancer 30 contains the plurality of rolling elements 32 and the liquid 33 as the moving body, or only the plurality of rolling elements 32 may be contained as the moving body. In this case, the rolling elements 32 may be coated with rubber or the like, and the rolling elements 32 may be moved by resistance generated by friction between the inner circumferential surface of the annular container 31 and the rolling elements 32.
Claims (5)
1. A vertical washing machine is characterized by comprising:
an outer tub disposed inside the cabinet;
a drum disposed in the tub to be rotatable around a rotation axis;
an annular container disposed in the drum and accommodating the rolling elements;
a motor that rotationally drives the drum; and
a control unit for controlling the motor,
the control unit controls the motor to perform unbalance elimination control as follows before starting the dehydration process: stopping the rotational driving of the drum after increasing the rotational speed of the drum to a target rotational speed that exceeds a resonance rotational speed at which the lateral resonance of the drum occurs;
a load amount detection unit for detecting the load amount corresponding to the amount of the washings in the drum,
in the unbalance elimination control, after stopping the rotational driving of the drum, the control unit controls the motor to reduce the rotation speed of the drum in accordance with a prescribed motor deceleration force, and,
the predetermined motor deceleration force when the rotation speed of the drum is reduced in the unbalance correction control may be changed according to the load amount detected by the load amount detection unit.
2. The vertical washing machine as claimed in claim 1,
the annular container contains a liquid.
3. The vertical washing machine as claimed in claim 2,
comprises an ambient temperature detection means for detecting an ambient temperature,
in the unbalance elimination control, after stopping the rotational driving of the drum, the control unit controls the motor to reduce the rotation speed of the drum in accordance with a prescribed motor deceleration force, and,
the predetermined motor decelerating force when the rotation speed of the drum is reduced in the unbalance correction control may be changed according to the ambient temperature detected by the ambient temperature detecting unit.
4. The vertical washing machine as claimed in any one of claims 2 to 3,
comprises an ambient temperature detection means for detecting an ambient temperature,
the number of times of the unbalance elimination control can be changed in accordance with the ambient temperature detected by the ambient temperature detection unit.
5. The vertical washing machine as claimed in claim 1,
a vibration detecting unit for detecting the vibration of the outer barrel,
continuation of the unbalance elimination control is determined according to the magnitude of the vibration of the outer tub detected by the vibration detection unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018242978A JP2020103419A (en) | 2018-12-26 | 2018-12-26 | Vertical type washing machine |
| JP2018-242978 | 2018-12-26 | ||
| PCT/CN2019/128354 WO2020135516A1 (en) | 2018-12-26 | 2019-12-25 | Vertical washing machine |
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| Publication Number | Publication Date |
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| CN113286921A CN113286921A (en) | 2021-08-20 |
| CN113286921B true CN113286921B (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201980081169.5A Active CN113286921B (en) | 2018-12-26 | 2019-12-25 | Vertical washing machine |
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| Country | Link |
|---|---|
| JP (1) | JP2020103419A (en) |
| CN (1) | CN113286921B (en) |
| WO (1) | WO2020135516A1 (en) |
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| KR960023426A (en) * | 1994-12-26 | 1996-07-20 | 구자홍 | Dewatering method of drum washing machine |
| CN101701407A (en) * | 2009-10-30 | 2010-05-05 | 南京乐金熊猫电器有限公司 | Dehydration method of drum washing machine |
| JP2013059440A (en) * | 2011-09-13 | 2013-04-04 | Panasonic Corp | Drum type washing machine |
| JP2013081543A (en) * | 2011-10-06 | 2013-05-09 | Samsung Yokohama Research Institute Co Ltd | Vertical type washer |
| CN106795680A (en) * | 2015-04-09 | 2017-05-31 | 松下知识产权经营株式会社 | Tumbling-box washing machine |
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| JP2010057822A (en) * | 2008-09-05 | 2010-03-18 | Hitachi Appliances Inc | Drum washing machine |
| CN101962901B (en) * | 2009-07-22 | 2014-01-08 | 海尔集团公司 | Gimbal device of rolling drum-type washing machine |
| JP2011200273A (en) * | 2010-03-24 | 2011-10-13 | Panasonic Corp | Washing machine |
| KR102011816B1 (en) * | 2012-02-01 | 2019-08-19 | 엘지전자 주식회사 | Controlling Method for Laundry machine |
| KR102328248B1 (en) * | 2014-02-21 | 2021-11-19 | 삼성전자주식회사 | Washing machine with ball balancer and vibration reduction method thereof |
| US10066333B2 (en) * | 2014-02-21 | 2018-09-04 | Samsung Electronics Co., Ltd. | Washing machine with ball balancer and method of controlling vibration reduction thereof |
| KR102325967B1 (en) * | 2017-04-24 | 2021-11-11 | 엘지전자 주식회사 | Laundry treatment machine |
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2018
- 2018-12-26 JP JP2018242978A patent/JP2020103419A/en active Pending
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2019
- 2019-12-25 CN CN201980081169.5A patent/CN113286921B/en active Active
- 2019-12-25 WO PCT/CN2019/128354 patent/WO2020135516A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR960023426A (en) * | 1994-12-26 | 1996-07-20 | 구자홍 | Dewatering method of drum washing machine |
| CN101701407A (en) * | 2009-10-30 | 2010-05-05 | 南京乐金熊猫电器有限公司 | Dehydration method of drum washing machine |
| JP2013059440A (en) * | 2011-09-13 | 2013-04-04 | Panasonic Corp | Drum type washing machine |
| JP2013081543A (en) * | 2011-10-06 | 2013-05-09 | Samsung Yokohama Research Institute Co Ltd | Vertical type washer |
| CN106795680A (en) * | 2015-04-09 | 2017-05-31 | 松下知识产权经营株式会社 | Tumbling-box washing machine |
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| WO2020135516A1 (en) | 2020-07-02 |
| CN113286921A (en) | 2021-08-20 |
| JP2020103419A (en) | 2020-07-09 |
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