EP3296446B1 - Washing machine - Google Patents
Washing machine Download PDFInfo
- Publication number
- EP3296446B1 EP3296446B1 EP16792221.0A EP16792221A EP3296446B1 EP 3296446 B1 EP3296446 B1 EP 3296446B1 EP 16792221 A EP16792221 A EP 16792221A EP 3296446 B1 EP3296446 B1 EP 3296446B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- rotating drum
- drum
- washing machine
- water guiding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
-
- 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
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
- D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis
- D06F37/225—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
-
- 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
- D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
- D06F2103/26—Imbalance; Noise level
-
- 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
- D06F33/48—Preventing or reducing imbalance or noise
-
- 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
- D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
- D06F34/14—Arrangements for detecting or measuring specific parameters
- D06F34/16—Imbalance
-
- 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
- D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
-
- 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
- D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
- D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle
-
- 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
-
- 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
- D06F37/14—Ribs or rubbing means forming part of the receptacle
-
- 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
- D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
- D06F37/24—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a vertical axis
- D06F37/245—Damping vibrations by displacing, supplying or ejecting a material, e.g. liquid, into or from counterbalancing pockets
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/08—Liquid supply or discharge arrangements
- D06F39/088—Liquid supply arrangements
Definitions
- the present disclosure relates to a washing machine having a dewatering function.
- washing machines placed in ordinary families, coin-operated laundry rooms or the like have a washing-dewatering function or a washing-dewatering-drying function.
- a washing machine having a dewatering function generates vibration and noise due to bias of washings in a rotating drum.
- eccentricity of the rotating drum during rotation is large when the bias of the washings is large, and a large torque is required during the rotation, failing to start a dewatering operation.
- a user stops operation of the washing machine and eliminates the bias of the washings by a manual operation.
- the rotating drum decelerates in response to an output time sequence of a position detection unit until a rotating speed at which a centrifugal force is smaller than a gravity, so as to eliminate the bias of the washings (with reference to patent literature 1).
- acceleration sensors arranged on a front portion and a rear portion of the rotating drum are configured to calculate a difference between vibration quantities detected, so as to detect an imbalance state that the washings are biased to the front portion of the rotating drum, thereby preventing imbalance that the washings are biased to the front portion of the rotating drum during dewatering (with reference to patent literature 2).
- the present disclosure aims to solve such problems in the existing art.
- the present disclosure provides a washing machine as defined in the attached independent claim, where the washing machine is capable of reliably eliminating the imbalance of the washing drum during the dewatering operation, reducing generation of vibration and noise caused by eccentricity of the washing drum and efficiently dewatering the washings without decelerating or stopping the rotation of the washing drum even if the bias of the washings exists in the washing drum. Further improvements are provided in the dependent claims.
- the washing machine of the present invention includes: a washing drum; a plurality of hollow balancers arranged on an inner circumferential surface of the washing drum along an axis direction of the washing drum; a water receiving ring unit, where the water receiving ring unit is formed by stacking multiple layers of annular water guiding grooves, and fixed to an end in the axis direction of an outer surface of the washing drum, the annular water guiding grooves correspond to the balancers respectively; water passing components for connecting a portion of the water guiding grooves with the balancers corresponding to the water guiding grooves; and a nozzle unit for separately injecting adjustment water into the water guiding grooves.
- the balancers are lifting ribs for lifting washings.
- the balancers are arranged on the inner circumferential surface of the washing drum, i.e., a rotating drum, at equal intervals.
- Each of the water guiding grooves is formed so that an inner circumferential surface of the water guiding groove is opened and an outer circumferential surface of the water guiding groove is bottomed.
- Bottom plates of each layer of the water guiding grooves of the water receiving ring unit are eccentric relative to an axis of the washing drum, and adjacent bottom plates are fixed in such a manner that angle differences of the adjacent bottom plates in an eccentric direction are the same. Eccentric top portions of the bottom plates are provided with the water passing components
- an inclined plate inclined downward from a front end to a rear end is arranged inside each of the lifting ribs.
- the bottom plates are funnel-shaped at mounting positions of the water passing components for being mounted on the bottom plates.
- each of the water guiding grooves includes: an annular water guiding groove body; and bulging portions protruding from the water guiding groove body to a radial outer side.
- a connecting opening communicated with the water guiding groove body is formed in each of the bulging portions at a lagging side of a rotation direction of the washing drum, and each of the bulging portions is connected with the water passing components at a leading side of the rotation direction.
- separation components for furling water storage regions inside the balancers in a circumferential direction of the washing drum are arranged.
- the washing machine has water storage portions which are mounted at an end in the axis direction of the outer surface of the washing drum and are communicated with any one of the plurality of balancers.
- the washing drum is the rotating drum with a substantially horizontal axis.
- Each of the water guiding grooves forming the water receiving unit is formed so that an inner circumferential surface of the water guiding groove is opened and an outer circumferential surface of the water guiding groove is bottomed.
- the nozzle unit is arranged at a position on a lower portion of the water receiving ring unit so that water is supplied to the water guiding grooves.
- the washing machine eliminates the imbalance generated by the bias of the washings by supplying the injected adjustment water of the selected water guiding grooves of the water receiving ring unit integrally rotating with the washing drum to the balancers through the water passing components, the generation of vibration and noise in a state of continuing to perform a normal dewatering operation can be prevented without decelerating or stopping the rotation of the washing drum halfway.
- the washing machine of the present disclosure adopts the solution that the balancers are used as the lifting ribs, two functions of adjusting balance of the washing drum and lifting the washings can be acquired.
- the washing machine of the present disclosure adopts the solution that the bottom plates of each layer of water guiding grooves of the water receiving ring unit are eccentric relative to the axis of the rotating drum, the water receiving ring unit can generate a centrifugal force toward a top direction of the eccentricity during rotation to efficiently supply the adjustment water injected into the water guiding grooves to the balancers.
- the washing machine of the present disclosure can efficiently discharge the adjustment water.
- the washing machine of the present disclosure can improve retention of the adjustment water injected into the water guiding grooves and efficiently supply the adjustment water to the balancers.
- the adjustment water in the water guiding groove body can smoothly flow into the bulging portions through the connection openings; and the adjustment water is efficiently supplied from the bulging portions to the balancers through the water passing components.
- the adjustment water can be concentrated in a narrow range in the rotation direction of the washing drum in the balancers; and the imbalance generated by the bias of the washings can be eliminated by less adjustment water within short time.
- the washing machine of the present disclosure has the water storage portions, more adjustment water can be supplied to the vicinity of the washing drum; and a greater imbalance caused by the bias of the washings can be eliminated stably.
- the drum type washing machine of the present disclosure can gently injecting the adjustment water into the water guiding grooves from the nozzle unit and can inhibit water splashing.
- FIG. 1 is a front view illustrating an appearance of a washing machine 1 according to a first embodiment of the present disclosure.
- FIG. 2 is a schematic view illustrating an internal structure of the washing machine 1.
- FIG. 3 is a perspective view illustrating a rotating drum 5 as viewed from the front.
- FIG. 4 is a perspective view illustrating the rotating drum 5 as viewed from the rear.
- FIG. 5 is a side view illustrating the rotating drum 5.
- the washing machine 1 shown in FIG. 1 and FIG. 2 is a horizontal drum type washing machine including a main body 2, an outer drum 3 wrapped in the main body 2, a door body 4 mounted on the main body 2, and a rotating drum 5 wrapped in the outer drum 3.
- An opening 2a is formed on a front surface of the main body 2 to take out/put in the washings.
- the door body 4 is arranged on the opening 2a and can be opened or closed freely, so as to maintain the opening in a closed state or an opened state.
- the outer drum 3 shown in FIG. 2 is formed in a substantially bottomed cylinder shape.
- the outer drum 3 includes: a disk-shaped bottom 3b; a cylindrical side wall 3c connected with an outer edge of the bottom 3b; an annular throttle portion 3d connected with the side wall 3c; and a cylindrical opening wall 3e connected with the throttle portion 3d and forming an opening 3a opposite to the opening 2a of the main body 2.
- the outer drum 3 has an axis S1 extending in a substantially horizontal direction. The outer drum 3 is arranged so that the opening 3a is opposite to the opening 2a of the main body 2.
- the rotating drum 5 is arranged in an inner space of the outer drum 3.
- the rotating drum 5 is formed to have a substantially bottomed cylinder shape (with reference to FIG. 3 to FIG. 5 ).
- the rotating drum 5 includes: a disk-shaped bottom 5c; a cylindrical side wall 5d connected with an outer edge of the bottom 5c; an annular throttle portion 5e connected with the side wall 5d; and a cylindrical opening wall 5f forming an opening 5a connected with the throttle portion 5e.
- An axis center of the rotating drum 5 is consistent with the axis S1 of the outer drum 3.
- a plurality of through holes 5b penetrating through the entire side wall 5d are formed in the side wall 5d of the rotating drum 5.
- the door body 4 is arranged on the opening 2a on the front surface of the main body 2, and can be opened or closed freely. As shown in FIG. 2 , the door body 4 closes the opening 2a of the main body 2 so that a convex portion 4a on a back surface of the door body 4 enters the opening 3a of the outer drum 3 and the opening 5a of the rotating drum 5 to prevent the washings in the rotating drum 5 from flying out.
- the washing machine 1 further includes a driving portion D and a water receiving ring unit 18.
- the driving portion D includes a bearing 7, a main shaft 8, a belt pulley 9, a drum motor 10 and a transmission belt 11 which are fixed to the bottom 3b of the outer drum 3.
- the bearing 7 is arranged at the center of the bottom 5c of the rotating drum 5.
- One end of the main shaft 8 is fixed to the bottom 5c of the rotating drum 5, and the other end is fixed to the belt pulley 9.
- the main shaft 8 is pivotally supported by the bearing 7 and is a rotatable. An axis center of the main shaft 8 is consistent with the axis S1.
- the drum motor 10 has an output shaft 10a.
- the transmission belt 11 is erected between the belt pulley 9 and the output shaft 10a.
- a torque of the drum motor 10 is transmitted to the belt pulley 9 and the main shaft 8 by the transmission belt 11, so as to rotate the rotating drum 5.
- an acceleration sensor 12 is arranged on the outer drum 3 at positions corresponding to the top end of the rotating drum 5, and is configured to detect accelerations in a horizontal direction and a vertical direction.
- a proximity switch 14 is provided to detect a sensor tag 13 arranged on the belt pulley 9.
- the outer drum 3 is connected to a drain pipe 15 for discharging retained dewatering liquid W to the outside of the main body 2.
- the dewatering liquid W can be discharged to the outside of the main body 2 by opening and closing an electromagnetic valve 16.
- FIG. 6 is a perspective view illustrating a lifting rib 6 arranged in the rotating drum 5 shown in FIG. 3 .
- FIG. 7 is a sectional view illustrating the lifting rib 6 arranged in the rotating drum 5 shown in FIG. 3 .
- the lifting rib 6 includes: a lifting rib body 6d; a tubular rod 6a connected with any one of water passing components 24a, 24b and 24c shown in FIG. 4 for supplying adjustment water described later; and a tubular rod 6b for discharging the adjustment water retained in the lifting rib 6.
- a plurality of such lifting ribs 6 are arranged in the rotating drum 5 in a manner of extending parallel to a direction of the axis S1 (with reference to FIG. 2 ).
- Each lifting rib body 6d is formed as a hollow body triangularly protruding from the side wall 5d of the rotating drum 5 to the axis S1, and configured to lift the washings while being rotationally driven by the rotating drum 5.
- the plurality of lifting ribs 6 are arranged in a circumferential direction of the rotating drum 5 at equal intervals. In the present embodiment, the plurality of lifting ribs 6 are arranged in the circumferential direction of the rotating drum 5 at intervals of 120°.
- the plurality of lifting ribs 6 can change a weight of the rotating drum 5 by the adjustment water at mounting positions of the lifting ribs 6, and can perform functions of a balancer when the bias of the washings occurs during dewatering described later.
- a plurality of elongated hollow bodies can be arranged on the inner circumferential surface of the rotating drum 5 in the direction of the axis S1 as the above structure.
- the tubular rod 6b is arranged on the rear portion at the top side of the lifting rib 6.
- FIG. 8 is a sectional view illustrating the water receiving ring unit 18 arranged in the rotating drum 5.
- FIG. 9 is a perspective view illustrating the assembly of the water receiving ring unit 18 in FIG. 8 .
- FIG. 10 is a view illustrating a structure of the water receiving ring unit 18 in FIG. 8 .
- FIG. 11 is a view illustrating an assembled state of the water receiving ring unit 18 in FIG. 8 .
- the water receiving ring unit 18 is fixed to the back surface of the rotating drum 5 as shown in FIG. 4 and FIG. 5 .
- the water receiving ring unit 18 shown in FIG. 8 is configured to have an annular shape, and is formed by stacking three layers (corresponding to the number of the lifting ribs 6 arranged in the rotating drum 5) of water guiding grooves 19a, 19b and 19c with an opened inner circumferential surface and an outer circumferential surface closed by a bottom plate along the direction of the axis S1 (with reference to FIG. 2 ) of the rotating drum 5.
- the water receiving ring unit 18 is formed by assembling plates shown in FIG. 9 .
- the water receiving ring unit 18 is integrated in a state of clamping circular bottom plates 21 with the same shape between circular ring plates 20 with the same shape.
- three layers of water guiding grooves 19a, 19b and 19c which have the bottom plates 21 as bottom surfaces and have the ring plates 20 as side walls are formed.
- a position of each of the bottom plates 21 in FIG. 10 is represented by a dot dash line, a dotted line and a double-dot line.
- Centers of the bottom plates 21 are eccentric from centers RC of the ring plates 20 for distance (d), and form eccentric centers EC.
- the ring plates 20 and the bottom plates 21 are assembled as shown by the dot dash lines, the dotted lines and the double-dot lines shown in FIG. 11 in such a manner that an angle difference in an eccentric direction of the adjacent bottom plates 21 is 120°, and then tubular rods 22a, 22b and 22c connected with the water passing components 24a, 24b and 24c (with reference to FIG. 4 ) are fixed on eccentric top portions of the bottom plates 21 located on an outer end of the ring plates 20.
- the water receiving ring unit 18 adopting such a structure is fixed so that the centers RC of the ring plates 20 are consistent with the axis S1 (with reference to FIG. 2 ) of the rotating drum 5.
- each of the bottom plates 21 of each of the water guiding grooves 19a, 19b and 19c is eccentrically configured about the axis S1 of the rotating drum 5 at the angle difference of 120°.
- the tubular rods 22a, 22b and 22c of the water receiving ring unit 18 adopting the above structure are connected with one end of the water passing components 24a, 24b and 24c as shown in FIG. 4 respectively, and the other ends of the water passing components 24a, 24b and 24c are connected to the tubular rods 6a of the lifting ribs 6 respectively.
- the lifting ribs 6 are mounted to the water passing components 24a, 24b and 24c at bottom sides of the lifting ribs 6.
- the water receiving ring unit 18 is provided with three water guiding grooves 19a, 19b and 19c and three lifting ribs 6 corresponding thereto to form the balancers. Moreover, angles between the eccentric top portions of the bottom plates 21 of the water guiding grooves 19a, 19b and 19c having the axis S1 of the rotating drum 5 as the center and angles between the lifting ribs 6 are 120°. It should be noted that the bottom plates 21 of the water guiding grooves 19a, 19b and 19c are designed in a circular shape as a preferred shape of the present embodiment, but can also be designed in an oblong shape including ellipse or a polygonal shape as long as the same function can be obtained.
- the adjustment water injected into the water guiding grooves 19a, 19b and 19c of the water receiving ring unit 18 adopting the above structure flows to the eccentric top portions by the centrifugal force, and is supplied from the tubular rods 22a, 22b and 22c to the lifting ribs 6 through the water passing components 24a, 24b and 24c.
- the supplied adjustment water is retained on wall surfaces in a centrifugal direction in the lifting ribs 6.
- the adjustment water is supplied to the lifting ribs 6 in this way so as to increase the weight of the lifting ribs 6.
- the imbalance of the rotating drum 5 can be eliminated without decelerating or stopping the rotation of the washing drum 5 as long as the adjustment water is supplied to the lifting ribs 6 so as to disperse agglomerates of the washings described later, thereby preventing generation of vibration and noise in a state of continuing to perform a normal dewatering operation.
- the rotating speed of the rotating drum 5 can be increased to start the dewatering operation.
- the rotating speed of the rotating drum 5 is reduced; the centrifugal force in the lifting ribs 6 is also attenuated gradually; and the adjustment water becomes unaffected to the centrifugal force, moves in the lifting ribs 6 and is discharged from the tubular rod 6b by the gravity.
- FIG. 12 is a view illustrating the nozzle unit 25 for injecting the adjustment water into the water receiving ring unit 18.
- the nozzle unit 25 includes three nozzles 25a, 25b and 25c configured toward the bottom plates 21 of the water guiding grooves 19a, 19b and 19c as shown in FIG. 12 .
- the nozzles 25a, 25b and 25c are configured to be inclined toward the rotating direction of the water receiving ring unit 18.
- the adjustment water when the adjustment water is injected from the nozzles 25a, 25b and 25c, the adjustment water is injected along curved surfaces of the bottom plates 21 of the water guiding grooves 19a, 19b and 19c, thus the adjustment water will not scatter in the water guiding grooves 19a, 19b and 19c and can be injected successfully.
- the adjustment water is tap water supplied to the nozzles 25a, 25b and 25c through electromagnetic valves 26a, 26b and 26c shown in FIG. 2 .
- the electromagnetic valves 26a, 26b and 26c can also be reversing electromagnetic valves.
- FIG. 13 is a block view illustrating an electrical system of the washing machine 1 of the present disclosure.
- FIG. 14 is a view illustrating an imbalance state of the rotating drum 5.
- FIG. 15 is a view illustrating the imbalance state of the rotating drum 5.
- a controller 30 includes a central processing unit (CPU) 31 for controlling the entire system.
- the central processing unit 31 is connected with a memory 32 which stores the following setting values required for rotation control of the rotating drum 5: a low-speed rotation setting value (N1) before the start of the dewatering operation; a high-speed rotation setting value (N2) after the start of the dewatering operation; an imbalance quantity setting value (m1) during low-speed dewatering operation and an imbalance quantity setting value (m2) during high-speed dewatering operation.
- the central processing unit 31 is configured to output a control signal to a rotating speed controller 33, and further output the control signal to a motor controller (motor control circuit) 34 to perform the rotation control of a drum motor 10.
- a motor controller motor control circuit
- the rotating speed controller 33 inputs a signal indicating the rotating speed of the drum motor 10 from the motor controller 34 in real time as a control element.
- An imbalance quantity detector 35 and an imbalance position detector 36 are connected with the acceleration sensor 12.
- the imbalance position detector 36 is connected with the proximity switch 14.
- the imbalance quantity (M) is calculated by the imbalance quantity detector 35 according to magnitudes of the acceleration in the horizontal direction and the vertical direction transmitted from the acceleration sensor 12, and the imbalance quantity is output to an imbalance quantity determination portion 37.
- the imbalance position detector 36 is configured to calculate an angle of an imbalance direction according to the signal indicating a position of the sensor tag 13 input from the proximity switch 14, and output a signal of the imbalance position to a water injection controller 38.
- the water injection controller 38 determines whether to supply water to a certain lifting rib 6 in the rotating drum 5 according to a prestored control program and the amount of supplied water. Then, the selected electromagnetic valves 26a, 26b and 26c are opened to inject the adjustment water.
- injection of the adjustment water from the selected nozzles 25a, 25b and 25c to the water guiding grooves 19a, 19b and 19 c of the water receiving ring unit 18 is started based on the calculation of the imbalance quantity.
- the injection of the adjustment water is stopped.
- the generation of vibration and noise can be prevented in a state of continuing to perform the dewatering operation without decelerating the rotation of the rotating drum 5.
- the determination regarding the lifting ribs 6 made by the water injection controller 38 is shown in for example FIG. 14 .
- the adjustment water is supplied to the lifting rib at position A.
- FIG. 15 when the washing agglomerates LD are located near the lifting rib 6 at position A, the adjustment water is supplied to the lifting ribs 6 at positions B and C.
- FIG. 16 is the flow chart illustrating the control flow of the dewatering operation of the washing machine 1 of the present disclosure.
- step S1 the CPU 31 starts a dewatering process when receiving an input signal from a dewatering button (not shown) or receiving a signal for starting the dewatering process during washing mode operation. The process proceeds to a step S2.
- step S2 the CPU 31 notifies the rotating speed controller 33 of a signal for starting a low-speed rotation (N1).
- the rotating speed controller 33 transmits the control signal to the motor controller 34 based on the notification.
- the motor controller 34 is energized based on the control signal to drive the drum motor 10.
- the rotating drum 5 is rotationally driven at a preset rotating speed (100 rpm-400 rpm in the present embodiment).
- the process proceeds to step S3.
- step S3 the CPU 31 reads from the imbalance position detector 36, and determines whether a signal indicating that the sensor tag 13 has been detected is received from the proximity switch 14 by the imbalance position detector 36. The process proceeds to step S4 when the sensor tag 13 has been detected. Step S3 is repeated when the sensor tag 13 is not detected.
- step S4 the CPU 31 reads from the imbalance quantity detector 35 to acquire the acceleration in the horizontal direction and the vertical direction given by the acceleration sensor 12, and performs preset calculation to calculate the imbalance quantity M, and detects an imbalance position by the imbalance position detector 36. The process proceeds to step S5.
- step S5 the CPU 31 compares the imbalance quantity M with an imbalance quantity setting value (m1) stored in the memory 32, to determine whether M is greater than m1.
- M is greater than m1
- the process proceeds to step S6.
- M is not greater than m1
- the process proceeds to step S7.
- the imbalance quantity setting value (m1) is a threshold value of a preset imbalance quantity at which the high-speed rotation of the rotating drum 5 may be started.
- M being not greater than m1 means that the imbalance quantity M is a value at which the high-speed rotation of the rotating drum 5 may be started.
- M being not greater than m1 means that the imbalance of the rotating drum 5 is improved or does not exist from the beginning.
- step S6 the CPU 31 transmits a water injection starting signal to the water injection controller 38, and starts to inject the adjustment water into the lifting ribs 6.
- step S6 the electromagnetic valves 26a to 26c opened in the initial step S6 kept opened.
- the CPU 31 opens one of the electromagnetic valves 26a to 26c corresponding to the lifting rib 6 located at a position opposite to the washing agglomerates LD, and starts to inject water into the lifting rib 6 located at the position opposite to the washing agglomerates LD.
- the CPU 31 opens the electromagnetic valves 26a to 26c corresponding to the lifting ribs 6 except for the lifting rib 6, and starts to inject water into the lifting ribs 6 except for the lifting rib 6 located in the vicinity of the washing agglomerates LD. Then, the process returns to step S3.
- step S7 the CPU notifies the water injection controller 38 of an instruction for closing the electromagnetic valves 26a to 26c, and stops supplying the adjustment water to the lifting ribs. Then, the process proceeds to step S8. It should be noted that the electromagnetic valves 26a to 26c are in a closed state when step S6 is not carried out, so the process directly proceeds to step S8 without any operation.
- step S8 the CPU 31 controls the rotating drum 5 to start the high-speed rotation. Specifically, the CPU 31 notifies the rotating speed controller 33 of a signal for starting the high-speed rotation.
- the rotating speed controller 33 transmits a control signal to the motor controller 34 based on the notification.
- the motor controller 34 is energized based on the control signal to drive the drum motor 10.
- the rotating drum 5 is rotationally driven at a preset high speed (500 rpm-800 rpm in the present embodiment).
- the process proceeds to step S9.
- step S9 the CPU 31 reads from the imbalance position detector 36, and determines whether the sensor tag 13 has been detected by the proximity switch 14. When it is determined that the sensor tag 13 has been detected by the proximity switch 14, the process proceeds to step S10. When it is determined that the sensor tag 13 has not been detected by the proximity switch 14, step S9 is repeated.
- step S10 the CPU 31 reads from the imbalance quantity detector 35 to acquire the acceleration in the horizontal direction and the vertical direction given by the acceleration sensors 12, performs the preset calculation to calculate the imbalance quantity M, and detects the imbalance position by the imbalance position detector 36. The process proceeds to step S11.
- step S11 the CPU 31 compares the imbalance quantity M with the imbalance quantity setting value (m2) stored in the memory 32, to determine whether M is greater than m2. When M is greater than m2, the process proceeds to step S12. When M is not greater than m2, the process proceeds to step S13.
- the imbalance quantity setting value (m2) is a threshold value of a preset imbalance quantity at which no problem occurs even if the rotating speed of the rotating drum 5 is increased to a preset high rotating speed.
- M being not greater than m2 means that the imbalance quantity M is a value at which the rotating drum 5 can rotate at a high speed.
- M being not greater than m2 means that a degree of the imbalance of the rotating drum 5 is improved so that the rotating drum 5 can rotate at the high speed, or the imbalance capable of interfering with a degree of the high-speed rotation does not exist from the beginning.
- step S12 the CPU 31 transmits a water injection start signal to the water injection controller 38, so as to inject the adjustment water into the lifting rib 6. Further, in the case where the operation of step 12 is the second cycle, the electromagnetic valves 26a to 26c opened in the initial step 12 kept opened.
- the CPU 31 opens one of the electromagnetic valves 26a to 26c corresponding to the lifting rib 6 at the position opposite to the washing agglomerates LD, and water is injected into the lifting rib 6 located at the position opposite to the washing agglomerates LD.
- step S10 when the detection result of the imbalance position in step S10 is as shown in FIG. 15 and the washing agglomerate LD is present near one of the lifting ribs 6, the CPU 31 opens the electromagnetic valves 26a to 26c corresponding to another lifting rib 6 except for this lifting rib 6, and water is injected into the another lifting rib 6 except for the lifting rib 6 located near the washing agglomerate LD. Then, the process returns to step S9.
- step S13 the CPU 31 notifies the water injection controller 38 of the instruction for closing the electromagnetic valves 26a to 26c, and stops supplying the adjustment water to the lifting ribs 6. Then, the process proceeds to step S14. It should be noted that the electromagnetic valves 26a to 26c are in the closed state when step S12 is not carried out, so the process directly proceeds to step S8 without any operation.
- step S14 the CPU 31 reads from a timing portion (not shown) to determine whether the elapsed time from which the rotating drum 5 reaches the preset high rotating speed exceeds a set time preset for the dewatering operation.
- the process proceeds to step S15.
- the process returns to step S9.
- step 15 the rotating speed controller is notified of a signal for ending the dewatering operation.
- the rotational driving of the drum motor 10 is stopped so as to end the dewatering operation.
- the supplied adjustment water in the lifting ribs 6 can be completely discharged to the outside with slow rotation until the rotation of the rotating drum 5 is stopped, and is returned to the initial state.
- the process can be controlled repeatedly and correctly.
- the washing machine 1 capable of preventing the generation of vibration and noise in any process from the start of the dewatering operation to the end can be designed.
- FIG. 17 is a view illustrating an internal structure of a modified embodiment of the first embodiment of the present disclosure.
- a branch pipe 116 is separated from the drain pipe 15; and dewatering liquid W retained at the bottom of the outer drum 3 is recycled by a pump 17 to be reused as the adjustment water, so as to improve economic benefits.
- the dewatering liquid W pressed and fed by the pump 17 is used as the adjustment water, to be supplied to the nozzles 25a, 25b and 25c through the electromagnetic valves 26a, 26b and 26c.
- the water receiving ring unit 18 is composed of three water guiding grooves 19a, 19b and 19c and three balancers 6 are arranged correspondingly is adopted in the above embodiment, but the present disclosure is not limited thereto, and a structure having more than two balancers 6 and a corresponding amount of water guiding grooves can also be adopted.
- the washing machine 1 of the present disclosure can provide the adjustment water to the lifting ribs 6 by the centrifugal force generated by the water receiving ring unit 18 rotated together with the rotating drum 5, so as to eliminate the imbalance of the rotating drum 5. Since the generation of the centrifugal force of the water receiving ring unit 18 is independent of a configuration state of the rotating drum 5, the present disclosure not only is implemented in the horizontal drum type washing machine of the present embodiment, but also may be implemented in a vertical drum type washing machine and an inclined drum type washing machine.
- FIG. 18 is a view illustrating a modified embodiment of the water receiving ring unit 18.
- FIG. 19 is a perspective view illustrating the assembly of the water receiving ring unit 18 in FIG. 18 .
- the water receiving ring unit 18 adopts a water guiding groove integrally formed a circular water guide ring 23 having a " "-shaped cross section, to realize a structure equivalent to the ring plates 20 and the bottom plates 21 in the first embodiment.
- the water guide rings 23 formed in this way are stacked to form the water guiding grooves 19a, 19b and 19c, thereby forming a water receiving ring unit 18A.
- the water guide rings 23 formed in this way have the same shape. Therefore, similar to the first embodiment, the water guiding grooves 19a, 19b and 19c are eccentrically configured at the angle difference of 120° about the axis S1 of the rotating drum 5; and the tubular rods 22a, 22b and 22c are fixed on the eccentric top portions of the bottom plates 21.
- the water receiving ring unit 18 is formed in this way, so that the amount of eccentricity can be set freely, and a range of the eccentricity is not limited by an amplitude of the ring plates 20 like the first embodiment.
- FIG. 20 is a sectional view illustrating another example of the lifting rib 6 arranged in the rotating drum 5.
- An inclined plate 6c inclined downward from a front end to a rear end is arranged in the lifting rib 6.
- the rotating speed of the rotating drum 5 is reduced; then, the centrifugal force in the lifting rib 6 is also attenuated gradually; and the adjustment water becomes unaffected to the centrifugal force, moves in the lifting rib 6 and is discharged from the tubular rod 6b.
- the inclined plate 6c is arranged inside the lifting rib 6 in advance to promote discharge of the adjustment water particularly in a horizontal drum, and discharge water efficiently without remaining the adjustment water in the lifting rib 6.
- FIG. 21 is a view illustrating a modified embodiment of the water receiving ring unit 18.
- the bottom plates 21 are formed into a funnel shape first as shown in FIG. 21 by mounting portions of the tubular rods 22a, 22b and 22c, so as to improve retention of the adjustment water.
- FIGs. 22-26 are views illustrating a washing machine 50 of the second embodiment of the present disclosure.
- FIG. 22 is a perspective view illustrating the rotating drum 5 provided in the washing machine 50 of the present embodiment viewed from the back surface.
- FIG. 23 is an exploded perspective view illustrating a water guiding groove 68.
- FIGs. 22-26 the same reference numerals are given to the structures same as those of the first embodiment.
- a plurality of water guiding grooves 68 constituting the water receiving ring unit 69 are not eccentric with each other, and are configured into a concentric circle shape.
- each of the water guiding grooves 68 has water guide bodies 68a and bulging portions 68b.
- the water guide bodies 68a are components which have an annular shape, opened inner circumferential surfaces and substantially " "-shaped cross sections.
- a plurality of (total three in the present embodiment) bulging portions 68b are formed from bottoms of the water guide bodies 68a in a circumferential direction at equal intervals in a protruding manner.
- the bulging portions 68b are connected with the lifting ribs 6 through cylindrical water passing components 74.
- the water receiving ring unit 69 is configured to concentrically and circularly fix a plurality of (three in the present embodiment) water guiding grooves 68 and the rotating drum 5 at a bottom 5c of the rotating drum 5 in an stacking state.
- Such a water receiving ring unit 69 is formed by assembling a plurality of plates as shown in FIG. 23 .
- the plurality of plates may include a cylindrical ring plate 71, a plurality of (two in the present embodiment) circular plate-like first side plates 70 having outer circumferences substantially same as that of the ring plate 71 in length, a pair of substantially circular plate-like second side plates 72 having side plate bodies 72b and protruding portions 72a, and bulging components 73 formed by two ends of bent belt-like plates.
- Openings 71b or notches 71a constituting connecting ports described later are formed at a plurality of (three in the present disclosure) positions in a circumferential direction of the ring plate 71 at equal intervals.
- the openings 71b are formed at central portions in an axis direction of the ring plates 71.
- the notches 71a are formed at two ends in the axis direction of the ring plates 71.
- Each of the second side plates 72 includes: side plate bodies 72b having an outer circumference and an inner circumference substantially the same as those of the first side plates 70 in length; and protruding portions 72a protruding to radial outer side of the side plate bodies 72b.
- the protruding portions 72a are formed at a plurality of (three in the present embodiment) positions in the circumferential direction of the side plate bodies 72b in an approximately rectangular shape in which protruding ends 72a1 outline a gentle arc.
- an arc-shaped notch 72a2 constituting a water passing port 68b 1 described later is formed at one end side of the protruding end 72a1 of the protruding portion 72a of one of the pair of second side plates 72.
- the notch 72a2 is connected with a water passing component 74.
- the protruding portions 72a are overlapped with the openings 71b or the notches 71a, the pair of second side plates 72 clamp the ring plates 71 in which two first side plates 70 are embedded, and the bulging components 73 are further mounted between the pair of protruding portions 72a and 72a.
- the ring plates 71 are used as bottom surfaces; the first side plates 70 and the second side plates 72 or two first side plates 70 are used as bottom walls; and three water guiding grooves 68 in which the bulging portions 68b are formed by the protruding portions 72a and the bulging components 73 are stacked, thereby forming the water receiving ring unit 69.
- FIG. 24 is a local sectional perspective view illustrating the water guiding grooves 68 cut in cross section positions including the bulging portions 68b.
- the bulging portions 68b of the water guiding grooves 68 as shown in FIG. 24 , have the water passing ports 68b1 connected with the water passing components 74 shown in FIG. 22 on a leading side in a rotating direction X of the rotating drum 5, and have connecting openings 68a1 communicated with interiors of the water guide bodies 68a on a lagging side in the rotating direction X of the rotating drum 5.
- the connecting openings 68a1 are opened to a degree greater than the water passing ports 68b 1, and are opened at about two thirds of the bulging portions 68b from one end of each of the bulging portions 68b to the rotating direction X.
- the adjustment water is injected into the water guiding groove body 68a of such water guiding grooves 68 through the nozzle unit 25 as required during dewatering process, but the injected adjustment water may be rolled up more or less in the water guiding groove body 68a rotating at a high speed, and most adjustment water may be retained at lower portions of the water guiding groove body 68a. Moreover, when the bulging portions 68b are rotated to positions of the lower portions constituting the water receiving ring unit 69, the adjustment water flows down to the bulging portions 68b through the connecting openings 68a1.
- the adjustment water is pushed to side walls 68b2 of the bulging portions 68b located on the lagging side in the rotating direction X, smoothly flows into the water passing ports 68b 1 located on the leading side in the rotating direction X through the centrifugal force, and is supplied to the lifting ribs (bag body lifting ribs) 6 through the water through the water passing components 74 by water pressure.
- the water guiding grooves 68 have the annular water guiding groove body 68a and the bulging portions 68b protruding from the water guiding groove body 68a to a radial outer side.
- the bulging portions 68 is provided with the openings 68a1 connected with the water guiding groove body 68a on the lagging side in the rotating direction X of the rotating drum 5.
- the water passing components 74 are connected to the leading side in the rotating direction X. Therefore, the adjustment water can efficiently flow into the water through components 74 and the lifting ribs 6 from the bulging portions 68b by means of the gravity and the centrifugal force, so as to eliminate the imbalance (bias load) generated by the bias of the washings within a short time.
- FIG. 25 is a longitudinal sectional perspective view illustrating a washing machine 50 cut near the nozzle unit 25.
- the nozzle unit 25 having the nozzles 25a to 25c is arranged at the lower portion of the water receiving ring unit 69 (the lower portion of the rotating drum 5).
- the adjustment water is injected into the water guiding groove body 68a in the rotating direction X through the nozzles 25a to 25c from above.
- Such a nozzle unit 25 is arranged at a position on the lower portion of the water receiving ring unit 69 so that water is supplied to the water guiding grooves 68.
- a water supplying position is set at the lower portion of the rotating drum 5.
- the adjustment water can be gently injected into the water guiding groove body 68a of the water guiding grooves 68 rotating at the high speed by the nozzle unit 25, so that the water is hardly splashed during injection.
- FIG. 26 is a view illustrating the lifting ribs 6 arranged in the rotating drum 5. Specifically, FIG. 26(a) is a longitudinal sectional perspective view partially illustrating the vicinity of the lifting ribs 6 of the washing machine 50; FIG. 26(b) is a perspective view illustrating the lifting ribs 6; and FIG. 26(c) is a sectional view illustrating the lifting ribs 6 cut in a direction orthogonal to a long-side direction.
- separation components (spacers) 56 for furling water storage regions T inside the lifting ribs 6 in the rotating direction (circumferential direction) of the rotating drum 5 are arranged.
- the separation components 56 are box-like components opened toward the axis S1 of the rotating drum 5, and have a length in the long-side direction approximately equal to the length in the long-side direction of the lifting ribs 6.
- a length W1 of the separation components 56 in the rotating direction of the rotating drum 5 is configured to be about half of a length W2 of the lifting ribs 6 in the rotating direction of the rotating drum 5.
- a water supply openings 6e inserted by the water passing components 74 are formed in end surfaces in the long-side direction of the lifting ribs 6 in the vicinity of opening edges 56a of the separation components 56 as shown in FIG. 26(a) .
- the adjustment water flowing into such lifting ribs 6 through the water passing components 74 is stored in the separation components 56 configured at central portions in the rotating direction of the lifting ribs 6 until an inflow volume exceeds a volume of the separation components 56.
- the adjustment water is concentrated in a narrow range in the rotating direction of the lifting ribs 6, as shown by double-dot lines in FIG. 26 , compared with a case of supplying the adjustment water to the lifting ribs 6 without the separation components 56, diffusion of the adjustment water in the rotating direction of the rotating drum 5 can be inhibited.
- the centrifugal force applied to the adjustment water during dewatering is a composite force of centrifugal forces respectively acting on the distributed water
- the adjustment water is also concentrated to a narrow region in the rotating direction of the rotating drum 5, and the closer the directions of the centrifugal forces are, the larger the synthesized vector is. Therefore, the bias load of the washings can be eliminated efficiently by less adjustment water.
- a volume of the supplied adjustment water exceeds the volume of the separation components 56, the adjustment water overflows from opening ends 56a of the separation components 56 and is gradually accumulated from the radial outer side of the rotating drum 5 to an inner side.
- the adjustment water in the lifting ribs 6 located on an upper portion of the rotating drum 5 flows to an axis S1 (with reference to FIG. 2 ) side by the gravity and is discharged out of the lifting ribs 6 through the water passing components 74.
- the separation components 56 for furling the water storage regions T inside the lifting ribs 6 in the circumferential direction of the rotating drum 5 are configured in this way, the adjustment water can be concentrated in the narrow range in the rotating direction of the rotating drum 5 in the lifting ribs 6, and the imbalance generated by the bias of the washings can be eliminated by less adjustment water within the short time.
- FIGs. 27 and 28 are flow charts illustrating control of the washing machine 50 of the second embodiment.
- FIG. 29 is a view illustrating a control flow of the dewatering operation of the washing machine 50.
- step SP1 when the CPU 31 receives the input signal from the dewatering button (not shown) or receives the signal for starting the dewatering process during washing mode operation, the process proceeds to step SP1, and the dewatering process is started. It should be noted that, in the present embodiment, the control of constituent elements in the controller 30 as recorded in the first embodiment is omitted.
- step SP1 the CPU 31 controls the rotating drum 5 to accelerate after the rotating drum 5 reverses slowly.
- step SP2 the CPU 31 controls the rotating drum 5 to rotate at a low speed based on the low-speed rotation setting value (N1).
- step SP3 the CPU 31 controls to detect the imbalance quantity (M) based on an acceleration value (an x component of the acceleration sensor) given by the acceleration sensor 12.
- step SP4 the CPU 31 compares the imbalance quantity (M) with an imbalance quantity setting value (ma) stored in the memory 32 to determine whether M is less than ma.
- the process proceeds to step SP6.
- the imbalance quantity setting value (ma) is a threshold value indicating that a bias degree of the washings is too great to be eliminated even if the adjustment water is supplied to the lifting ribs 6.
- the case of proceeding to step SP5 means a case that the bias degree of the washings is too great to be eliminated even if the adjustment water is supplied to the lifting ribs 6.
- step SP5 the process returns to step SP1 after the rotation of the rotating drum 5 is stopped by the CPU 31, and repeats the steps SP1 to SP4.
- step SP6 the process proceeds to step SP7 when the CPU 31 determines that the elapsed time after starting the low-speed rotation is greater than a set time preset for performing low-speed rotating process.
- step SP7 the CPU 31 controls the rotating drum 5 to rotate at the high speed based on the high-speed rotation setting value (N2).
- step SP8 the CPU 31 controls to detect the imbalance quantity (M) and the imbalance position (N) based on the acceleration value given by the acceleration sensor 12.
- step SP9 the CPU 31 replaces an electromagnetic valve X, a region Y and an electromagnetic valve Z shown in FIG. 29 with values in a parameter table according to the imbalance position (N).
- a cross section of the rotating drum 5 is divided into six equal parts in the circumferential direction, and a positional relationship relative to the lifting ribs 6 is schematically shown.
- the lifting rib 6 marked as 25a indicates the lifting rib 6 which is supplied with the adjustment water through the nozzle 25a shown in FIG. 25 .
- the lifting rib 6 marked as 25b indicates the lifting rib 6 which is supplied with the adjustment water through the nozzle 25b shown in FIG. 25
- the lifting rib 6 marked as 25c indicates the lifting rib 6 which is supplied with the adjustment water through the nozzle 25c shown in FIG. 25 .
- step SP10 the CPU 31 controls the electromagnetic valve X recorded in the parameter table of FIG. 29 to be opened.
- the electromagnetic valve X is an electromagnetic valve 25c corresponding to the lifting rib 6 arranged opposite to the region I.
- the adjustment water is supplied to the lifting rib 6 corresponding to the electromagnetic valve X, a capacity and a position of the bias load are changed.
- step SP11 shown in FIG. 28 the CPU 31 calculates the imbalance quantity (M) and the imbalance position (N) again based on the acceleration value given by the acceleration sensor 12.
- step SP12 the CPU 31 compares the imbalance quantity (M) with the imbalance quantity setting value (ma) stored in the memory 32, to determine whether M is less than ma.
- M imbalance quantity
- ma imbalance quantity setting value
- step SP13 the CPU 31 compares the imbalance quantity (M) with an imbalance quantity setting value (mb) stored in the memory 32, to determine whether M is less than mb.
- the imbalance quantity setting value (mb) is less than the imbalance quantity setting value (ma), and is a threshold value indicating that the bias degree of the washings is too small to produce noise even if the adjustment water is not supplied to the lifting ribs 6.
- the process proceeds to step SP23.
- step SP14 when the CPU 31 determines that the elapsed time from which the electromagnetic valve X is opened is greater than a set time, the process proceeds to step SP15.
- the set time is a time required for one lifting rib 6 being filled with the adjustment water.
- step SP15 the CPU 31 determines whether the imbalance position (N) is a region Y represented by the parameter table of FIG. 29 . When it is determined that the imbalance position (N) is the region Y, the process proceeds to step SP16. When it is determined that the imbalance position (N) is not the region Y, the process returns to step SP11. For example, if the initial imbalance position (N) in step SP11 is the region I, the imbalance position (N) is always the region I as long as no calculation is performed again, and the process returns to step SP16.
- step SP16 Since a result of the recalculation in step SP16 is changed over time when the electromagnetic valve X supplies the water, the imbalance position (N) is changed from the region I to a region V when the weight of the lifting rib 6 corresponding to the electromagnetic valve 25c is increased, and the imbalance position (N) is changed to the region Y when step SP15 is repeated multiple times.
- step SP16 the CPU 31 controls the electromagnetic valve X recorded in the parameter table of FIG. 29 to be closed, and controls an electromagnetic valve Z to be opened.
- the electromagnetic valve X is the electromagnetic valve 25c corresponding to the lifting rib 6 arranged opposite to the region I
- the electromagnetic valve Z is the electromagnetic valve 25b corresponding to the lifting rib 6 located at a position closer to the region I than the lifting rib 6 corresponding to the electromagnetic valve 25c.
- step SP17 the CPU 31 calculates the imbalance quantity (M) and the imbalance position (N) again based on the acceleration value given by the acceleration sensor 12.
- step SP18 the CPU 31 compares the imbalance quantity (M) with the imbalance quantity setting value (ma) stored in the memory 32, to determine whether M is less than ma.
- M imbalance quantity
- ma imbalance quantity setting value
- step SP19 the CPU 31 compares the imbalance quantity (M) with the imbalance quantity setting value (mb) stored in the memory 32, to determine whether M is less than mb.
- M imbalance quantity
- mb imbalance quantity setting value
- step SP20 when the CPU 31 determines that the elapsed time from which the electromagnetic valve Z is opened is greater than the above set time, the process proceeds to step SP21. On the other hand, the process returns to step SP17 when it is determined that the elapsed time from which the electromagnetic valve Z is opened is not greater than the set time.
- step SP21 shown in FIG. 27 the CPU 31 enables all the electromagnetic valves X, Y and Z to be in the closed state.
- step SP22 the process returns to step SP1 after the CPU 31 controls the rotating drum 5 to stop rotating.
- step SP23 shown in FIG. 28 the CPU 31 enables all the electromagnetic valves X, Y and Z to be in the closed state.
- step SP24 shown in FIG. 28 the CPU 31 controls the rotating drum 5 to rotate at a maximum speed for a specified time, to perform the dewatering process. Then, the dewatering process is ended.
- the water is firstly supplied to the lifting rib 6 which is located at the position farthest from the initially detected imbalance position (N) and greatly affected by the adjustment of the imbalance quantity (M) and position (N).
- the lifting rib 6 At the end of the water supply to the lifting rib 6, changes of the imbalance quantity (M) and position (N) generated due to the water supply are considered, and the water is supplied to a second lifting rib 6 as needed.
- FIG. 30 is a view illustrating a modified embodiment of the second embodiment.
- FIG. 30(a) is a perspective view illustrating a modified embodiment viewed from the bottom 5c of the rotating drum 5; and
- FIG. 30(b) is a local sectional perspective view illustrating the modified embodiment cut near the water storage tanks 80 and the lifting ribs 6.
- the water storage tanks 80 are hollow components arranged on the radial outer side of the water receiving ring unit 69 and arranged at the positions corresponding to the lifting ribs 6 by means of a blind region of the water receiving ring unit 69.
- the water storage tanks 80 are communicated with the corresponding lifting ribs 6 through communication ports 80a.
- the adjustment water flows in from the lifting ribs 6 by the centrifugal force.
- the adjustment water flowing into the water storage tanks 80 is discharged to the lifting ribs 6 through the communication ports 80a when the rotating speed of the rotating drum 5 is reduced to reduce the centrifugal force.
- the plurality of water storage tanks 80 as the water storage portions are mounted on the end surface in the axis S1 direction of the outer surface of the rotating drum 5, specifically mounted on the bottom 5c of the rotating drum 5, and are respectively communicated with the plurality of lifting ribs 6, so more adjustment water can be accumulated by increasing the volume of the lifting ribs 6 by means of the water storage tanks 80; and the bias load can be eliminated safely even if the washing agglomerates are relatively large during dewatering.
- the structure of the above embodiment can be applied to a vertical washing machine.
- the structure is constituted in such a manner that the water receiving ring unit is configured below the washing drum extending on the axis in a vertical direction, upper surfaces or lower surfaces of the water guiding grooves are opened, and the adjustment water is supplied to the water guiding grooves from above or below.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Description
- The present disclosure relates to a washing machine having a dewatering function.
- Some washing machines placed in ordinary families, coin-operated laundry rooms or the like have a washing-dewatering function or a washing-dewatering-drying function.
- A washing machine having a dewatering function generates vibration and noise due to bias of washings in a rotating drum. In addition, since eccentricity of the rotating drum during rotation is large when the bias of the washings is large, and a large torque is required during the rotation, failing to start a dewatering operation. In order to overcome the problem, a user stops operation of the washing machine and eliminates the bias of the washings by a manual operation.
- In order to eliminate such a cumbersome operation, a following washing machine is proposed. When it is determined by the washing machine that the bias of the washings, i.e., a magnitude of imbalance, is greater than a specified value, the rotating drum decelerates in response to an output time sequence of a position detection unit until a rotating speed at which a centrifugal force is smaller than a gravity, so as to eliminate the bias of the washings (with reference to patent literature 1).
- In addition, another washing machine is also proposed. In the washing machine, acceleration sensors arranged on a front portion and a rear portion of the rotating drum are configured to calculate a difference between vibration quantities detected, so as to detect an imbalance state that the washings are biased to the front portion of the rotating drum, thereby preventing imbalance that the washings are biased to the front portion of the rotating drum during dewatering (with reference to patent literature 2).
-
- Patent Literature 1:
Japanese Laid-Open Patent Publication No. 9-290089 - Patent Literature 2:
Japanese Laid-Open Patent Publication No. 2009-82558 - Patent Literature 3:
US2534269A disclosing the preamble ofclaim 1. - Patent Literature 4:
EP1391549A1 - Patent Literature 5:
US2610523A - Patent Literature 6:
JPH11169595A - Patent Literature 7:
US2014/223969A1 - Patent Literature 8:
US2717698A - In the
above patent literature 1, a centrifugal force is reduced gradually by decelerating rotation of the rotating drum so that washings stacked together fall by gravity. However, the washings tangled with each other may fall by keeping a tangled state in the existing art, so the washings cannot be unfastened. When the rotating drum is rotated in such a state, since the imbalance is not eliminated, the imbalance will occur again and the rotating drum will decelerate repeatedly. - On the other hand, in the
above patent literature 2, a difference between a vibration value detected by a vibration detection unit at a front portion and a vibration value detected by a detection unit at a rear portion is calculated when the drum rotates. Then, rotation of the rotating drum is decelerated or stopped when the difference between the vibration values is greater than a preset threshold value. - However, even through such existing art, the washings tangled with each other still cannot be unfastened and remain in the rotating drum, so the existing part does not a fundamental method to eliminate the imbalance.
- Further, in the
above patent literatures - It should be noted that these problems not only occur in a drum type washing machine having the rotating drum (a washing drum), but also may occur in a vertical washing machine.
- The present disclosure aims to solve such problems in the existing art. The present disclosure provides a washing machine as defined in the attached independent claim, where the washing machine is capable of reliably eliminating the imbalance of the washing drum during the dewatering operation, reducing generation of vibration and noise caused by eccentricity of the washing drum and efficiently dewatering the washings without decelerating or stopping the rotation of the washing drum even if the bias of the washings exists in the washing drum. Further improvements are provided in the dependent claims.
- The washing machine of the present invention includes: a washing drum; a plurality of hollow balancers arranged on an inner circumferential surface of the washing drum along an axis direction of the washing drum; a water receiving ring unit, where the water receiving ring unit is formed by stacking multiple layers of annular water guiding grooves, and fixed to an end in the axis direction of an outer surface of the washing drum, the annular water guiding grooves correspond to the balancers respectively; water passing components for connecting a portion of the water guiding grooves with the balancers corresponding to the water guiding grooves; and a nozzle unit for separately injecting adjustment water into the water guiding grooves.
- According to the present invention, the balancers are lifting ribs for lifting washings. In addition, according to the present disclosure, the balancers are arranged on the inner circumferential surface of the washing drum, i.e., a rotating drum, at equal intervals. Each of the water guiding grooves is formed so that an inner circumferential surface of the water guiding groove is opened and an outer circumferential surface of the water guiding groove is bottomed. Bottom plates of each layer of the water guiding grooves of the water receiving ring unit are eccentric relative to an axis of the washing drum, and adjacent bottom plates are fixed in such a manner that angle differences of the adjacent bottom plates in an eccentric direction are the same. Eccentric top portions of the bottom plates are provided with the water passing components
- In addition, according to the present disclosure, an inclined plate inclined downward from a front end to a rear end is arranged inside each of the lifting ribs.
- In addition, according to the present disclosure, the bottom plates are funnel-shaped at mounting positions of the water passing components for being mounted on the bottom plates.
- In addition, according to the present invention, each of the water guiding grooves includes: an annular water guiding groove body; and bulging portions protruding from the water guiding groove body to a radial outer side. A connecting opening communicated with the water guiding groove body is formed in each of the bulging portions at a lagging side of a rotation direction of the washing drum, and each of the bulging portions is connected with the water passing components at a leading side of the rotation direction.
- In addition, according to the present disclosure, separation components for furling water storage regions inside the balancers in a circumferential direction of the washing drum are arranged.
- In addition, according to the present invention, the washing machine has water storage portions which are mounted at an end in the axis direction of the outer surface of the washing drum and are communicated with any one of the plurality of balancers.
- In addition, according to the present disclosure, the washing drum is the rotating drum with a substantially horizontal axis. Each of the water guiding grooves forming the water receiving unit is formed so that an inner circumferential surface of the water guiding groove is opened and an outer circumferential surface of the water guiding groove is bottomed. The nozzle unit is arranged at a position on a lower portion of the water receiving ring unit so that water is supplied to the water guiding grooves.
- Through the present disclosure, since the washing machine eliminates the imbalance generated by the bias of the washings by supplying the injected adjustment water of the selected water guiding grooves of the water receiving ring unit integrally rotating with the washing drum to the balancers through the water passing components, the generation of vibration and noise in a state of continuing to perform a normal dewatering operation can be prevented without decelerating or stopping the rotation of the washing drum halfway.
- Since the washing machine of the present disclosure adopts the solution that the balancers are used as the lifting ribs, two functions of adjusting balance of the washing drum and lifting the washings can be acquired.
- Since the washing machine of the present disclosure adopts the solution that the bottom plates of each layer of water guiding grooves of the water receiving ring unit are eccentric relative to the axis of the rotating drum, the water receiving ring unit can generate a centrifugal force toward a top direction of the eccentricity during rotation to efficiently supply the adjustment water injected into the water guiding grooves to the balancers.
- Since the inclined plates inclined from the front ends to the rear ends are arranged inside the lifting ribs, the washing machine of the present disclosure can efficiently discharge the adjustment water.
- Since the mounting portions of the water passing components of the bottom plates of the water guiding grooves of the water receiving ring unit are formed into a funnel shape, the washing machine of the present disclosure can improve retention of the adjustment water injected into the water guiding grooves and efficiently supply the adjustment water to the balancers.
- Since the water guiding grooves of the washing machine of the present disclosure have the water guiding groove body and the bulging portions, the adjustment water in the water guiding groove body can smoothly flow into the bulging portions through the connection openings; and the adjustment water is efficiently supplied from the bulging portions to the balancers through the water passing components.
- Since the washing machine of the present disclosure is provided with the separation components, the adjustment water can be concentrated in a narrow range in the rotation direction of the washing drum in the balancers; and the imbalance generated by the bias of the washings can be eliminated by less adjustment water within short time.
- Since the washing machine of the present disclosure has the water storage portions, more adjustment water can be supplied to the vicinity of the washing drum; and a greater imbalance caused by the bias of the washings can be eliminated stably.
- Since the nozzle unit is configured at the position capable of supplying water to the water guiding grooves on the lower portion of the water receiving ring unit, the drum type washing machine of the present disclosure can gently injecting the adjustment water into the water guiding grooves from the nozzle unit and can inhibit water splashing.
-
-
FIG. 1 is a front view illustrating an appearance of awashing machine 1 according to a first embodiment of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 2 is a schematic view illustrating an internal structure of thewashing machine 1 of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 3 is a perspective view, as viewed from the front, illustrating a rotatingdrum 5 adopted by awashing machine 1 of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 4 is a perspective view, as viewed from the rear, illustrating the rotatingdrum 5 adopted by thewashing machine 1 of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 5 is a side view illustrating the rotatingdrum 5 adopted by thewashing machine 1 of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 6 is a perspective view illustrating alifting rib 6 arranged in the rotatingdrum 5 of thewashing machine 1 of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 7 is a sectional view illustrating the liftingrib 6 arranged in therotating drum 5 of thewashing machine 1 of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 8 is a sectional view illustrating a waterreceiving ring unit 18 arranged in therotating drum 5 of thewashing machine 1 of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 9 is a perspective view illustrating an assembly of the waterreceiving ring unit 18 inFIG. 8 , is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 10 is a view illustrating a structure of the waterreceiving ring unit 18 inFIG. 8 , is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 11 is a view illustrating an assembled state of the waterreceiving ring unit 18 inFIG. 8 , is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 12 is a view illustrating a state of injecting adjustment water into anozzle unit 25 of the waterreceiving ring unit 18, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 13 is a block view illustrating an electrical system of thewashing machine 1 of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 14 is a view illustrating an imbalance state of therotating drum 5, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 15 is a view illustrating an imbalance state of therotating drum 5, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 16 is a flow chart illustrating a control flow of dewatering operation of thewashing machine 1 of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 17 is a schematic view illustrating an internal structure of a modified embodiment according to the first embodiment of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 18 is a sectional view illustrating a modified embodiment of the waterreceiving ring unit 18 according to the first embodiment of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 19 is a perspective view illustrating an assembly of the waterreceiving ring unit 18 shown inFIG. 18 , is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 20 is a sectional view illustrating a modified embodiment of lifting ribs according to the first embodiment of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 21 is a local perspective view illustrating another modified embodiment of a water receiving ring unit according to the first embodiment of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 22 is a perspective view, as viewed from the rear, illustrating arotating drum 5 provided in awashing machine 50 according to a second embodiment of the present disclosure, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 23 is an exploded perspective view illustrating a waterreceiving ring unit 69 shown inFIG. 22 , is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 24 is a sectional perspective view illustrating awater guiding groove 68 forming the waterreceiving ring unit 69 shown inFIG. 22 , cut at sectional positions including a bulgingportion 68b, whereFIG. 24 is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 25 is a longitudinal sectional perspective view illustrating thewashing machine 50 cut near thenozzle unit 25, whereFIG. 25 is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 26 is a view illustrating a liftingrib 6 arranged in therotating drum 5 of thewashing machine 50, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 27 is a flow chart illustrating a control flow of dewatering operation of thewashing machine 50 according to the second embodiment, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 28 is a flow chart illustrating a control flow of dewatering operation of thewashing machine 50 according to the second embodiment, is not covered by the claims, and is included for better understanding of the present disclosure; -
FIG. 29 is a view illustrating a control flow of dewatering operation of thesame washing machine 50, is not covered by the claims, and is included for better understanding of the present disclosure; and -
FIG. 30 is a view illustrating a modified embodiment of thewashing machine 50 of the second embodiment. - It is to be noted that, the first embodiment, and the modified embodiments of the first embodiment shown by
FIGs. 17 to 21 are not covered by the subject-matter of the claims, and are included for better understanding of the present disclosure. - Hereinafter, embodiments of the present disclosure are described in detail with reference to drawings.
FIG. 1 is a front view illustrating an appearance of awashing machine 1 according to a first embodiment of the present disclosure.FIG. 2 is a schematic view illustrating an internal structure of thewashing machine 1.FIG. 3 is a perspective view illustrating arotating drum 5 as viewed from the front.FIG. 4 is a perspective view illustrating therotating drum 5 as viewed from the rear.FIG. 5 is a side view illustrating therotating drum 5. - The
washing machine 1 shown inFIG. 1 andFIG. 2 is a horizontal drum type washing machine including amain body 2, anouter drum 3 wrapped in themain body 2, adoor body 4 mounted on themain body 2, and arotating drum 5 wrapped in theouter drum 3. Anopening 2a is formed on a front surface of themain body 2 to take out/put in the washings. Thedoor body 4 is arranged on theopening 2a and can be opened or closed freely, so as to maintain the opening in a closed state or an opened state. - The
outer drum 3 shown inFIG. 2 is formed in a substantially bottomed cylinder shape. Specifically, theouter drum 3 includes: a disk-shapedbottom 3b; acylindrical side wall 3c connected with an outer edge of the bottom 3b; anannular throttle portion 3d connected with theside wall 3c; and acylindrical opening wall 3e connected with thethrottle portion 3d and forming anopening 3a opposite to theopening 2a of themain body 2. Theouter drum 3 has an axis S1 extending in a substantially horizontal direction. Theouter drum 3 is arranged so that theopening 3a is opposite to theopening 2a of themain body 2. - The
rotating drum 5 is arranged in an inner space of theouter drum 3. Therotating drum 5 is formed to have a substantially bottomed cylinder shape (with reference toFIG. 3 to FIG. 5 ). Specifically, therotating drum 5 includes: a disk-shapedbottom 5c; acylindrical side wall 5d connected with an outer edge of the bottom 5c; anannular throttle portion 5e connected with theside wall 5d; and acylindrical opening wall 5f forming anopening 5a connected with thethrottle portion 5e. An axis center of therotating drum 5 is consistent with the axis S1 of theouter drum 3. A plurality of throughholes 5b penetrating through theentire side wall 5d are formed in theside wall 5d of therotating drum 5. - The
door body 4 is arranged on theopening 2a on the front surface of themain body 2, and can be opened or closed freely. As shown inFIG. 2 , thedoor body 4 closes theopening 2a of themain body 2 so that aconvex portion 4a on a back surface of thedoor body 4 enters theopening 3a of theouter drum 3 and theopening 5a of therotating drum 5 to prevent the washings in therotating drum 5 from flying out. - The
washing machine 1 further includes a driving portion D and a waterreceiving ring unit 18. The driving portion D includes abearing 7, amain shaft 8, abelt pulley 9, adrum motor 10 and atransmission belt 11 which are fixed to the bottom 3b of theouter drum 3. Thebearing 7 is arranged at the center of the bottom 5c of therotating drum 5. One end of themain shaft 8 is fixed to the bottom 5c of therotating drum 5, and the other end is fixed to thebelt pulley 9. Themain shaft 8 is pivotally supported by thebearing 7 and is a rotatable. An axis center of themain shaft 8 is consistent with the axis S1. - The
drum motor 10 has anoutput shaft 10a. Thetransmission belt 11 is erected between thebelt pulley 9 and theoutput shaft 10a. A torque of thedrum motor 10 is transmitted to thebelt pulley 9 and themain shaft 8 by thetransmission belt 11, so as to rotate therotating drum 5. - In addition, an
acceleration sensor 12 is arranged on theouter drum 3 at positions corresponding to the top end of therotating drum 5, and is configured to detect accelerations in a horizontal direction and a vertical direction. On the other hand, aproximity switch 14 is provided to detect asensor tag 13 arranged on thebelt pulley 9. In addition, theouter drum 3 is connected to adrain pipe 15 for discharging retained dewatering liquid W to the outside of themain body 2. The dewatering liquid W can be discharged to the outside of themain body 2 by opening and closing anelectromagnetic valve 16. -
FIG. 6 is a perspective view illustrating a liftingrib 6 arranged in therotating drum 5 shown inFIG. 3 .FIG. 7 is a sectional view illustrating the liftingrib 6 arranged in therotating drum 5 shown inFIG. 3 . - As shown in
FIG. 6 , the liftingrib 6 includes: a liftingrib body 6d; atubular rod 6a connected with any one ofwater passing components FIG. 4 for supplying adjustment water described later; and atubular rod 6b for discharging the adjustment water retained in the liftingrib 6. In addition, as shown inFIG. 3 , a plurality of such lifting ribs 6 (three in the present embodiment) are arranged in therotating drum 5 in a manner of extending parallel to a direction of the axis S1 (with reference toFIG. 2 ). Each liftingrib body 6d is formed as a hollow body triangularly protruding from theside wall 5d of therotating drum 5 to the axis S1, and configured to lift the washings while being rotationally driven by therotating drum 5. The plurality of liftingribs 6 are arranged in a circumferential direction of therotating drum 5 at equal intervals. In the present embodiment, the plurality of liftingribs 6 are arranged in the circumferential direction of therotating drum 5 at intervals of 120°. - Due to such a structure, the plurality of lifting
ribs 6 can change a weight of therotating drum 5 by the adjustment water at mounting positions of the liftingribs 6, and can perform functions of a balancer when the bias of the washings occurs during dewatering described later. In addition, in machine types without the liftingribs 6, a plurality of elongated hollow bodies can be arranged on the inner circumferential surface of therotating drum 5 in the direction of the axis S1 as the above structure. It should be noted that thetubular rod 6b is arranged on the rear portion at the top side of the liftingrib 6. Thus, the adjustment water retained in the liftingrib 6 can be discharged to the outside of therotating drum 5. - Next, a structure of the water
receiving ring unit 18 for supplying the adjustment water to the liftingribs 6 is described.FIG. 8 is a sectional view illustrating the waterreceiving ring unit 18 arranged in therotating drum 5.FIG. 9 is a perspective view illustrating the assembly of the waterreceiving ring unit 18 inFIG. 8 .FIG. 10 is a view illustrating a structure of the waterreceiving ring unit 18 inFIG. 8 .FIG. 11 is a view illustrating an assembled state of the waterreceiving ring unit 18 inFIG. 8 . - The water
receiving ring unit 18 is fixed to the back surface of therotating drum 5 as shown inFIG. 4 andFIG. 5 . The waterreceiving ring unit 18 shown inFIG. 8 is configured to have an annular shape, and is formed by stacking three layers (corresponding to the number of the liftingribs 6 arranged in the rotating drum 5) ofwater guiding grooves FIG. 2 ) of therotating drum 5. - The water
receiving ring unit 18 is formed by assembling plates shown inFIG. 9 . The waterreceiving ring unit 18 is integrated in a state of clampingcircular bottom plates 21 with the same shape betweencircular ring plates 20 with the same shape. Thus, three layers ofwater guiding grooves bottom plates 21 as bottom surfaces and have thering plates 20 as side walls are formed. In this case, a position of each of thebottom plates 21 inFIG. 10 is represented by a dot dash line, a dotted line and a double-dot line. Centers of thebottom plates 21 are eccentric from centers RC of thering plates 20 for distance (d), and form eccentric centers EC. - The
ring plates 20 and thebottom plates 21 are assembled as shown by the dot dash lines, the dotted lines and the double-dot lines shown inFIG. 11 in such a manner that an angle difference in an eccentric direction of theadjacent bottom plates 21 is 120°, and thentubular rods water passing components FIG. 4 ) are fixed on eccentric top portions of thebottom plates 21 located on an outer end of thering plates 20. The waterreceiving ring unit 18 adopting such a structure is fixed so that the centers RC of thering plates 20 are consistent with the axis S1 (with reference toFIG. 2 ) of therotating drum 5. Thus, each of thebottom plates 21 of each of thewater guiding grooves rotating drum 5 at the angle difference of 120°. - The
tubular rods receiving ring unit 18 adopting the above structure are connected with one end of thewater passing components FIG. 4 respectively, and the other ends of thewater passing components tubular rods 6a of the liftingribs 6 respectively. It should be noted that the liftingribs 6 are mounted to thewater passing components ribs 6. Thus, the retention of the adjustment water supplied to thelifting ribs 6 in a centrifugal direction can be improved. - With such a structure, when the adjustment water is injected into the
water guiding grooves receiving ring unit 18 exceeds a critical rotating speed at which the centrifugal force is generated, the adjustment water injected into thewater guiding grooves tubular rods - The water
receiving ring unit 18 is provided with threewater guiding grooves ribs 6 corresponding thereto to form the balancers. Moreover, angles between the eccentric top portions of thebottom plates 21 of thewater guiding grooves rotating drum 5 as the center and angles between the liftingribs 6 are 120°. It should be noted that thebottom plates 21 of thewater guiding grooves - The adjustment water injected into the
water guiding grooves receiving ring unit 18 adopting the above structure flows to the eccentric top portions by the centrifugal force, and is supplied from thetubular rods lifting ribs 6 through thewater passing components ribs 6. The adjustment water is supplied to thelifting ribs 6 in this way so as to increase the weight of the liftingribs 6. Thus, the imbalance of therotating drum 5 can be eliminated without decelerating or stopping the rotation of thewashing drum 5 as long as the adjustment water is supplied to thelifting ribs 6 so as to disperse agglomerates of the washings described later, thereby preventing generation of vibration and noise in a state of continuing to perform a normal dewatering operation. In addition, thus, the rotating speed of therotating drum 5 can be increased to start the dewatering operation. - As the dewatering operation is ended, the rotating speed of the
rotating drum 5 is reduced; the centrifugal force in the liftingribs 6 is also attenuated gradually; and the adjustment water becomes unaffected to the centrifugal force, moves in the liftingribs 6 and is discharged from thetubular rod 6b by the gravity. - Next, a
nozzle unit 25 for injecting the adjustment water into thewater guiding grooves FIG. 12 is a view illustrating thenozzle unit 25 for injecting the adjustment water into the waterreceiving ring unit 18. Thenozzle unit 25 includes threenozzles bottom plates 21 of thewater guiding grooves FIG. 12 . Thenozzles receiving ring unit 18. Thus, when the adjustment water is injected from thenozzles bottom plates 21 of thewater guiding grooves water guiding grooves - The adjustment water is tap water supplied to the
nozzles electromagnetic valves FIG. 2 . It should be noted that theelectromagnetic valves - Next, operation control of the
washing machine 1 of the present disclosure is described.FIG. 13 is a block view illustrating an electrical system of thewashing machine 1 of the present disclosure.FIG. 14 is a view illustrating an imbalance state of therotating drum 5.FIG. 15 is a view illustrating the imbalance state of therotating drum 5. Acontroller 30 includes a central processing unit (CPU) 31 for controlling the entire system. Thecentral processing unit 31 is connected with amemory 32 which stores the following setting values required for rotation control of the rotating drum 5: a low-speed rotation setting value (N1) before the start of the dewatering operation; a high-speed rotation setting value (N2) after the start of the dewatering operation; an imbalance quantity setting value (m1) during low-speed dewatering operation and an imbalance quantity setting value (m2) during high-speed dewatering operation. - The
central processing unit 31 is configured to output a control signal to arotating speed controller 33, and further output the control signal to a motor controller (motor control circuit) 34 to perform the rotation control of adrum motor 10. It should be noted that therotating speed controller 33 inputs a signal indicating the rotating speed of thedrum motor 10 from themotor controller 34 in real time as a control element. Animbalance quantity detector 35 and animbalance position detector 36 are connected with theacceleration sensor 12. Theimbalance position detector 36 is connected with theproximity switch 14. - Thus, when the
sensor tag 13 is detected by the proximity switch 14 (with reference toFIG. 2 ), the imbalance quantity (M) is calculated by theimbalance quantity detector 35 according to magnitudes of the acceleration in the horizontal direction and the vertical direction transmitted from theacceleration sensor 12, and the imbalance quantity is output to an imbalancequantity determination portion 37. On the other hand, theimbalance position detector 36 is configured to calculate an angle of an imbalance direction according to the signal indicating a position of thesensor tag 13 input from theproximity switch 14, and output a signal of the imbalance position to awater injection controller 38. - When the signals indicating the imbalance quantity and the imbalance position transmitted from the imbalance
quantity determination portion 37 and theimbalance position detector 36 are input, thewater injection controller 38 determines whether to supply water to acertain lifting rib 6 in therotating drum 5 according to a prestored control program and the amount of supplied water. Then, the selectedelectromagnetic valves rotating drum 5, injection of the adjustment water from the selectednozzles water guiding grooves receiving ring unit 18 is started based on the calculation of the imbalance quantity. When the imbalance is eliminated by the liftingribs 6, the injection of the adjustment water is stopped. Thus, the generation of vibration and noise can be prevented in a state of continuing to perform the dewatering operation without decelerating the rotation of therotating drum 5. - It should be noted that the determination regarding the lifting
ribs 6 made by thewater injection controller 38 is shown in for exampleFIG. 14 . When washing agglomerates LD as the imbalance elements are located between the liftingrib 6 at position B and the liftingrib 6 at position C of therotating drum 5, the adjustment water is supplied to the lifting rib at position A. In addition, as shown inFIG. 15 , when the washing agglomerates LD are located near the liftingrib 6 at position A, the adjustment water is supplied to thelifting ribs 6 at positions B and C. - Next, a control flow of the dewatering operation of the
washing machine 1 of the present disclosure is described below with reference to a flow chart shown inFIG. 16. FIG. 16 is the flow chart illustrating the control flow of the dewatering operation of thewashing machine 1 of the present disclosure. - In step S1, the
CPU 31 starts a dewatering process when receiving an input signal from a dewatering button (not shown) or receiving a signal for starting the dewatering process during washing mode operation. The process proceeds to a step S2. - In step S2, the
CPU 31 notifies therotating speed controller 33 of a signal for starting a low-speed rotation (N1). Therotating speed controller 33 transmits the control signal to themotor controller 34 based on the notification. Themotor controller 34 is energized based on the control signal to drive thedrum motor 10. Thus, therotating drum 5 is rotationally driven at a preset rotating speed (100 rpm-400 rpm in the present embodiment). The process proceeds to step S3. - In step S3, the
CPU 31 reads from theimbalance position detector 36, and determines whether a signal indicating that thesensor tag 13 has been detected is received from theproximity switch 14 by theimbalance position detector 36. The process proceeds to step S4 when thesensor tag 13 has been detected. Step S3 is repeated when thesensor tag 13 is not detected. - In step S4, the
CPU 31 reads from theimbalance quantity detector 35 to acquire the acceleration in the horizontal direction and the vertical direction given by theacceleration sensor 12, and performs preset calculation to calculate the imbalance quantity M, and detects an imbalance position by theimbalance position detector 36. The process proceeds to step S5. - In step S5, the
CPU 31 compares the imbalance quantity M with an imbalance quantity setting value (m1) stored in thememory 32, to determine whether M is greater than m1. When M is greater than m1, the process proceeds to step S6. When M is not greater than m1, the process proceeds to step S7. The imbalance quantity setting value (m1) is a threshold value of a preset imbalance quantity at which the high-speed rotation of therotating drum 5 may be started. In step S5, M being not greater than m1 means that the imbalance quantity M is a value at which the high-speed rotation of therotating drum 5 may be started. In other words, M being not greater than m1 means that the imbalance of therotating drum 5 is improved or does not exist from the beginning. - In step S6, the
CPU 31 transmits a water injection starting signal to thewater injection controller 38, and starts to inject the adjustment water into the liftingribs 6. In addition, when an action ofstep 6 is a second cycle, theelectromagnetic valves 26a to 26c opened in the initial step S6 kept opened. - Specifically, when a detection result of the imbalance position is as shown in
FIG. 14 and the washing agglomerates LD are present between the liftingribs 6, theCPU 31 opens one of theelectromagnetic valves 26a to 26c corresponding to the liftingrib 6 located at a position opposite to the washing agglomerates LD, and starts to inject water into the liftingrib 6 located at the position opposite to the washing agglomerates LD. - In addition, when the detection result of the imbalance position is as shown in
FIG. 15 and the washing agglomerates LD are present in the vicinity of onelifting rib 6, theCPU 31 opens theelectromagnetic valves 26a to 26c corresponding to thelifting ribs 6 except for the liftingrib 6, and starts to inject water into the liftingribs 6 except for the liftingrib 6 located in the vicinity of the washing agglomerates LD. Then, the process returns to step S3. - In step S7, the CPU notifies the
water injection controller 38 of an instruction for closing theelectromagnetic valves 26a to 26c, and stops supplying the adjustment water to the lifting ribs. Then, the process proceeds to step S8. It should be noted that theelectromagnetic valves 26a to 26c are in a closed state when step S6 is not carried out, so the process directly proceeds to step S8 without any operation. - In step S8, the
CPU 31 controls therotating drum 5 to start the high-speed rotation. Specifically, theCPU 31 notifies therotating speed controller 33 of a signal for starting the high-speed rotation. Therotating speed controller 33 transmits a control signal to themotor controller 34 based on the notification. Themotor controller 34 is energized based on the control signal to drive thedrum motor 10. Thus, therotating drum 5 is rotationally driven at a preset high speed (500 rpm-800 rpm in the present embodiment). The process proceeds to step S9. - In step S9, the
CPU 31 reads from theimbalance position detector 36, and determines whether thesensor tag 13 has been detected by theproximity switch 14. When it is determined that thesensor tag 13 has been detected by theproximity switch 14, the process proceeds to step S10. When it is determined that thesensor tag 13 has not been detected by theproximity switch 14, step S9 is repeated. - In step S10, the
CPU 31 reads from theimbalance quantity detector 35 to acquire the acceleration in the horizontal direction and the vertical direction given by theacceleration sensors 12, performs the preset calculation to calculate the imbalance quantity M, and detects the imbalance position by theimbalance position detector 36. The process proceeds to step S11. - In step S11, the
CPU 31 compares the imbalance quantity M with the imbalance quantity setting value (m2) stored in thememory 32, to determine whether M is greater than m2. When M is greater than m2, the process proceeds to step S12. When M is not greater than m2, the process proceeds to step S13. - The imbalance quantity setting value (m2) is a threshold value of a preset imbalance quantity at which no problem occurs even if the rotating speed of the
rotating drum 5 is increased to a preset high rotating speed. In step S11, M being not greater than m2 means that the imbalance quantity M is a value at which therotating drum 5 can rotate at a high speed. In other words, M being not greater than m2 means that a degree of the imbalance of therotating drum 5 is improved so that therotating drum 5 can rotate at the high speed, or the imbalance capable of interfering with a degree of the high-speed rotation does not exist from the beginning. - In step S12, the
CPU 31 transmits a water injection start signal to thewater injection controller 38, so as to inject the adjustment water into the liftingrib 6. Further, in the case where the operation ofstep 12 is the second cycle, theelectromagnetic valves 26a to 26c opened in theinitial step 12 kept opened. - Specifically, when the detection result of the imbalance position in step S10 is as shown in
FIG. 14 and the washing agglomerate LD is present between the liftingribs 6, theCPU 31 opens one of theelectromagnetic valves 26a to 26c corresponding to the liftingrib 6 at the position opposite to the washing agglomerates LD, and water is injected into the liftingrib 6 located at the position opposite to the washing agglomerates LD. - In addition, when the detection result of the imbalance position in step S10 is as shown in
FIG. 15 and the washing agglomerate LD is present near one of the liftingribs 6, theCPU 31 opens theelectromagnetic valves 26a to 26c corresponding to another liftingrib 6 except for this liftingrib 6, and water is injected into the another liftingrib 6 except for the liftingrib 6 located near the washing agglomerate LD. Then, the process returns to step S9. - In step S13, the
CPU 31 notifies thewater injection controller 38 of the instruction for closing theelectromagnetic valves 26a to 26c, and stops supplying the adjustment water to the liftingribs 6. Then, the process proceeds to step S14. It should be noted that theelectromagnetic valves 26a to 26c are in the closed state when step S12 is not carried out, so the process directly proceeds to step S8 without any operation. - In step S14, the
CPU 31 reads from a timing portion (not shown) to determine whether the elapsed time from which therotating drum 5 reaches the preset high rotating speed exceeds a set time preset for the dewatering operation. When the elapsed time exceeds the set time for the dewatering operation, the process proceeds to step S15. When the elapsed time does not exceed the set time for the dewatering operation, the process returns to step S9. - In
step 15, the rotating speed controller is notified of a signal for ending the dewatering operation. The rotational driving of thedrum motor 10 is stopped so as to end the dewatering operation. - During the ending of the dewatering operation, the supplied adjustment water in the
lifting ribs 6 can be completely discharged to the outside with slow rotation until the rotation of therotating drum 5 is stopped, and is returned to the initial state. The process can be controlled repeatedly and correctly. - By the above flow of the dewatering operation, since a solution of detecting the imbalance state of the
rotating drum 5 at two stages including the low-speed rotation and the high-speed rotation and trying to eliminate the imbalance state is adopted, thewashing machine 1 capable of preventing the generation of vibration and noise in any process from the start of the dewatering operation to the end can be designed. - For example,
FIG. 17 is a view illustrating an internal structure of a modified embodiment of the first embodiment of the present disclosure. As shown inFIG. 17 , the following solution can also be adopted: abranch pipe 116 is separated from thedrain pipe 15; and dewatering liquid W retained at the bottom of theouter drum 3 is recycled by apump 17 to be reused as the adjustment water, so as to improve economic benefits. Namely, the following structure can also be adopted: the dewatering liquid W pressed and fed by thepump 17 is used as the adjustment water, to be supplied to thenozzles electromagnetic valves - It should be noted that a structure that the water
receiving ring unit 18 is composed of threewater guiding grooves balancers 6 are arranged correspondingly is adopted in the above embodiment, but the present disclosure is not limited thereto, and a structure having more than twobalancers 6 and a corresponding amount of water guiding grooves can also be adopted. - As described in detail above, the
washing machine 1 of the present disclosure can provide the adjustment water to thelifting ribs 6 by the centrifugal force generated by the waterreceiving ring unit 18 rotated together with therotating drum 5, so as to eliminate the imbalance of therotating drum 5. Since the generation of the centrifugal force of the waterreceiving ring unit 18 is independent of a configuration state of therotating drum 5, the present disclosure not only is implemented in the horizontal drum type washing machine of the present embodiment, but also may be implemented in a vertical drum type washing machine and an inclined drum type washing machine. -
FIG. 18 is a view illustrating a modified embodiment of the waterreceiving ring unit 18.FIG. 19 is a perspective view illustrating the assembly of the waterreceiving ring unit 18 inFIG. 18 . - The water
receiving ring unit 18 adopts a water guiding groove integrally formed a circularwater guide ring 23 having a ""-shaped cross section, to realize a structure equivalent to thering plates 20 and thebottom plates 21 in the first embodiment. The water guide rings 23 formed in this way are stacked to form thewater guiding grooves water guiding grooves rotating drum 5; and thetubular rods bottom plates 21. The waterreceiving ring unit 18 is formed in this way, so that the amount of eccentricity can be set freely, and a range of the eccentricity is not limited by an amplitude of thering plates 20 like the first embodiment. - In addition,
FIG. 20 is a sectional view illustrating another example of the liftingrib 6 arranged in therotating drum 5. Aninclined plate 6c inclined downward from a front end to a rear end is arranged in the liftingrib 6. As the dewatering operation is ended, the rotating speed of therotating drum 5 is reduced; then, the centrifugal force in the liftingrib 6 is also attenuated gradually; and the adjustment water becomes unaffected to the centrifugal force, moves in the liftingrib 6 and is discharged from thetubular rod 6b. At this time, theinclined plate 6c is arranged inside the liftingrib 6 in advance to promote discharge of the adjustment water particularly in a horizontal drum, and discharge water efficiently without remaining the adjustment water in the liftingrib 6. -
FIG. 21 is a view illustrating a modified embodiment of the waterreceiving ring unit 18. Thebottom plates 21 are formed into a funnel shape first as shown inFIG. 21 by mounting portions of thetubular rods - It is to be noted that, the second embodiment is not covered by the subject-matter of the claims, and is included for better understanding of the present disclosure.
-
FIGs. 22-26 are views illustrating awashing machine 50 of the second embodiment of the present disclosure.FIG. 22 is a perspective view illustrating therotating drum 5 provided in thewashing machine 50 of the present embodiment viewed from the back surface.FIG. 23 is an exploded perspective view illustrating awater guiding groove 68. Hereinafter, structures different from that of the first embodiment are described. Moreover, inFIGs. 22-26 , the same reference numerals are given to the structures same as those of the first embodiment. - In the present embodiment, a plurality of
water guiding grooves 68 constituting the waterreceiving ring unit 69 are not eccentric with each other, and are configured into a concentric circle shape. In addition, as shown inFIG. 22 , each of thewater guiding grooves 68 haswater guide bodies 68a and bulgingportions 68b. Thewater guide bodies 68a are components which have an annular shape, opened inner circumferential surfaces and substantially ""-shaped cross sections. At positions near the liftingribs 6 corresponding to thewater guiding grooves 68, a plurality of (total three in the present embodiment) bulgingportions 68b are formed from bottoms of thewater guide bodies 68a in a circumferential direction at equal intervals in a protruding manner. The bulgingportions 68b are connected with the liftingribs 6 through cylindricalwater passing components 74. The waterreceiving ring unit 69 is configured to concentrically and circularly fix a plurality of (three in the present embodiment)water guiding grooves 68 and therotating drum 5 at a bottom 5c of therotating drum 5 in an stacking state. - Such a water
receiving ring unit 69 is formed by assembling a plurality of plates as shown inFIG. 23 . Examples of the plurality of plates may include acylindrical ring plate 71, a plurality of (two in the present embodiment) circular plate-likefirst side plates 70 having outer circumferences substantially same as that of thering plate 71 in length, a pair of substantially circular plate-likesecond side plates 72 havingside plate bodies 72b and protrudingportions 72a, and bulgingcomponents 73 formed by two ends of bent belt-like plates. -
Openings 71b ornotches 71a constituting connecting ports described later are formed at a plurality of (three in the present disclosure) positions in a circumferential direction of thering plate 71 at equal intervals. Theopenings 71b are formed at central portions in an axis direction of thering plates 71. Thenotches 71a are formed at two ends in the axis direction of thering plates 71. - Each of the
second side plates 72 includes:side plate bodies 72b having an outer circumference and an inner circumference substantially the same as those of thefirst side plates 70 in length; and protrudingportions 72a protruding to radial outer side of theside plate bodies 72b. The protrudingportions 72a are formed at a plurality of (three in the present embodiment) positions in the circumferential direction of theside plate bodies 72b in an approximately rectangular shape in which protruding ends 72a1 outline a gentle arc. In addition, an arc-shaped notch 72a2 constituting awater passing 1 described later is formed at one end side of the protruding end 72a1 of the protrudingport 68bportion 72a of one of the pair ofsecond side plates 72. The notch 72a2 is connected with awater passing component 74. - These plates are integrated in such a manner that the protruding
portions 72a are overlapped with theopenings 71b or thenotches 71a, the pair ofsecond side plates 72 clamp thering plates 71 in which twofirst side plates 70 are embedded, and the bulgingcomponents 73 are further mounted between the pair of protrudingportions ring plates 71 are used as bottom surfaces; thefirst side plates 70 and thesecond side plates 72 or twofirst side plates 70 are used as bottom walls; and threewater guiding grooves 68 in which the bulgingportions 68b are formed by the protrudingportions 72a and the bulgingcomponents 73 are stacked, thereby forming the waterreceiving ring unit 69. -
FIG. 24 is a local sectional perspective view illustrating thewater guiding grooves 68 cut in cross section positions including the bulgingportions 68b. The bulgingportions 68b of thewater guiding grooves 68, as shown inFIG. 24 , have the water passing ports 68b1 connected with thewater passing components 74 shown inFIG. 22 on a leading side in a rotating direction X of therotating drum 5, and have connecting openings 68a1 communicated with interiors of thewater guide bodies 68a on a lagging side in the rotating direction X of therotating drum 5. The connecting openings 68a1 are opened to a degree greater than thewater passing 1, and are opened at about two thirds of the bulgingports 68bportions 68b from one end of each of the bulgingportions 68b to the rotating direction X. - The adjustment water is injected into the water guiding
groove body 68a of suchwater guiding grooves 68 through thenozzle unit 25 as required during dewatering process, but the injected adjustment water may be rolled up more or less in the water guidinggroove body 68a rotating at a high speed, and most adjustment water may be retained at lower portions of the water guidinggroove body 68a. Moreover, when the bulgingportions 68b are rotated to positions of the lower portions constituting the waterreceiving ring unit 69, the adjustment water flows down to the bulgingportions 68b through the connecting openings 68a1. Then, the adjustment water is pushed to side walls 68b2 of the bulgingportions 68b located on the lagging side in the rotating direction X, smoothly flows into thewater passing 1 located on the leading side in the rotating direction X through the centrifugal force, and is supplied to the lifting ribs (bag body lifting ribs) 6 through the water through theports 68bwater passing components 74 by water pressure. - In this way, the
water guiding grooves 68 have the annular water guidinggroove body 68a and the bulgingportions 68b protruding from the water guidinggroove body 68a to a radial outer side. The bulgingportions 68 is provided with the openings 68a1 connected with the water guidinggroove body 68a on the lagging side in the rotating direction X of therotating drum 5. Thewater passing components 74 are connected to the leading side in the rotating direction X. Therefore, the adjustment water can efficiently flow into the water throughcomponents 74 and the liftingribs 6 from the bulgingportions 68b by means of the gravity and the centrifugal force, so as to eliminate the imbalance (bias load) generated by the bias of the washings within a short time. -
FIG. 25 is a longitudinal sectional perspective view illustrating awashing machine 50 cut near thenozzle unit 25. As shown inFIG. 25 , in the present embodiment, thenozzle unit 25 having thenozzles 25a to 25c is arranged at the lower portion of the water receiving ring unit 69 (the lower portion of the rotating drum 5). The adjustment water is injected into the water guidinggroove body 68a in the rotating direction X through thenozzles 25a to 25c from above. Such anozzle unit 25 is arranged at a position on the lower portion of the waterreceiving ring unit 69 so that water is supplied to thewater guiding grooves 68. A water supplying position is set at the lower portion of therotating drum 5. Thus, the adjustment water can be gently injected into the water guidinggroove body 68a of thewater guiding grooves 68 rotating at the high speed by thenozzle unit 25, so that the water is hardly splashed during injection. -
FIG. 26 is a view illustrating the liftingribs 6 arranged in therotating drum 5. Specifically,FIG. 26(a) is a longitudinal sectional perspective view partially illustrating the vicinity of the liftingribs 6 of thewashing machine 50;FIG. 26(b) is a perspective view illustrating the liftingribs 6; andFIG. 26(c) is a sectional view illustrating the liftingribs 6 cut in a direction orthogonal to a long-side direction. - As shown in
FIG. 26 , in the present embodiment, separation components (spacers) 56 for furling water storage regions T inside the liftingribs 6 in the rotating direction (circumferential direction) of therotating drum 5 are arranged. Theseparation components 56 are box-like components opened toward the axis S1 of therotating drum 5, and have a length in the long-side direction approximately equal to the length in the long-side direction of the liftingribs 6. In addition, a length W1 of theseparation components 56 in the rotating direction of therotating drum 5 is configured to be about half of a length W2 of the liftingribs 6 in the rotating direction of therotating drum 5. In addition, in the present embodiment, awater supply openings 6e inserted by thewater passing components 74 are formed in end surfaces in the long-side direction of the liftingribs 6 in the vicinity of openingedges 56a of theseparation components 56 as shown inFIG. 26(a) . - The adjustment water flowing into
such lifting ribs 6 through thewater passing components 74 is stored in theseparation components 56 configured at central portions in the rotating direction of the liftingribs 6 until an inflow volume exceeds a volume of theseparation components 56. Thus, as shown by dotted lines inFIG. 26(c) , since the adjustment water is concentrated in a narrow range in the rotating direction of the liftingribs 6, as shown by double-dot lines inFIG. 26 , compared with a case of supplying the adjustment water to thelifting ribs 6 without theseparation components 56, diffusion of the adjustment water in the rotating direction of therotating drum 5 can be inhibited. Although the centrifugal force applied to the adjustment water during dewatering is a composite force of centrifugal forces respectively acting on the distributed water, the adjustment water is also concentrated to a narrow region in the rotating direction of therotating drum 5, and the closer the directions of the centrifugal forces are, the larger the synthesized vector is. Therefore, the bias load of the washings can be eliminated efficiently by less adjustment water. When a volume of the supplied adjustment water exceeds the volume of theseparation components 56, the adjustment water overflows from opening ends 56a of theseparation components 56 and is gradually accumulated from the radial outer side of therotating drum 5 to an inner side. Then, when the rotating speed of therotating drum 5 is reduced and the centrifugal force is reduced, for example, to end the dewatering, the adjustment water in thelifting ribs 6 located on an upper portion of therotating drum 5 flows to an axis S1 (with reference toFIG. 2 ) side by the gravity and is discharged out of the liftingribs 6 through thewater passing components 74. - Since the
separation components 56 for furling the water storage regions T inside the liftingribs 6 in the circumferential direction of therotating drum 5 are configured in this way, the adjustment water can be concentrated in the narrow range in the rotating direction of therotating drum 5 in the liftingribs 6, and the imbalance generated by the bias of the washings can be eliminated by less adjustment water within the short time. -
FIGs. 27 and28 are flow charts illustrating control of thewashing machine 50 of the second embodiment.FIG. 29 is a view illustrating a control flow of the dewatering operation of thewashing machine 50. - In the present embodiment, when the
CPU 31 receives the input signal from the dewatering button (not shown) or receives the signal for starting the dewatering process during washing mode operation, the process proceeds to step SP1, and the dewatering process is started. It should be noted that, in the present embodiment, the control of constituent elements in thecontroller 30 as recorded in the first embodiment is omitted. - In step SP1, the
CPU 31 controls therotating drum 5 to accelerate after therotating drum 5 reverses slowly. - In step SP2, the
CPU 31 controls therotating drum 5 to rotate at a low speed based on the low-speed rotation setting value (N1). - In step SP3, the
CPU 31 controls to detect the imbalance quantity (M) based on an acceleration value (an x component of the acceleration sensor) given by theacceleration sensor 12. - In step SP4, the
CPU 31 compares the imbalance quantity (M) with an imbalance quantity setting value (ma) stored in thememory 32 to determine whether M is less than ma. When it is determined that M is less than ma, the process proceeds to step SP6. On the other hand, when it is determined that M is not less than ma, the process proceeds to step SP5. Herein, the imbalance quantity setting value (ma) is a threshold value indicating that a bias degree of the washings is too great to be eliminated even if the adjustment water is supplied to the liftingribs 6. Namely, the case of proceeding to step SP5 means a case that the bias degree of the washings is too great to be eliminated even if the adjustment water is supplied to the liftingribs 6. - In step SP5, the process returns to step SP1 after the rotation of the
rotating drum 5 is stopped by theCPU 31, and repeats the steps SP1 to SP4. - In step SP6, the process proceeds to step SP7 when the
CPU 31 determines that the elapsed time after starting the low-speed rotation is greater than a set time preset for performing low-speed rotating process. - In step SP7, the
CPU 31 controls therotating drum 5 to rotate at the high speed based on the high-speed rotation setting value (N2). - In step SP8, the
CPU 31 controls to detect the imbalance quantity (M) and the imbalance position (N) based on the acceleration value given by theacceleration sensor 12. - In step SP9, the
CPU 31 replaces an electromagnetic valve X, a region Y and an electromagnetic valve Z shown inFIG. 29 with values in a parameter table according to the imbalance position (N). InFIG. 29 , a cross section of therotating drum 5 is divided into six equal parts in the circumferential direction, and a positional relationship relative to the liftingribs 6 is schematically shown. The liftingrib 6 marked as 25a indicates the liftingrib 6 which is supplied with the adjustment water through thenozzle 25a shown inFIG. 25 . Similarly, the liftingrib 6 marked as 25b indicates the liftingrib 6 which is supplied with the adjustment water through thenozzle 25b shown inFIG. 25 ; and the liftingrib 6 marked as 25c indicates the liftingrib 6 which is supplied with the adjustment water through thenozzle 25c shown inFIG. 25 . - In step SP10, the
CPU 31 controls the electromagnetic valve X recorded in the parameter table ofFIG. 29 to be opened. For example, when the imbalance position (N) is in a region I, the electromagnetic valve X is anelectromagnetic valve 25c corresponding to the liftingrib 6 arranged opposite to the region I. Thus, the adjustment water is supplied to the liftingrib 6 corresponding to the electromagnetic valve X, a capacity and a position of the bias load are changed. - In step SP11 shown in
FIG. 28 , theCPU 31 calculates the imbalance quantity (M) and the imbalance position (N) again based on the acceleration value given by theacceleration sensor 12. - In step SP12, the
CPU 31 compares the imbalance quantity (M) with the imbalance quantity setting value (ma) stored in thememory 32, to determine whether M is less than ma. When it is determined that M is less than ma, the process proceeds to step SP13. On the other hand, when it is determined that M is not less than ma, the process proceeds to step SP21 described later. Namely, when it is determined that the bias degree of the washings is too great to be eliminated even if the adjustment water is supplied to the liftingribs 6, the process proceeds to step SP21. - In step SP13, the
CPU 31 compares the imbalance quantity (M) with an imbalance quantity setting value (mb) stored in thememory 32, to determine whether M is less than mb. When it is determined that M is less than mb, the process proceeds to step SP23 described later. On the other hand, when it is determined that M is not less than mb, the process proceeds to step SP14 described later. Herein, the imbalance quantity setting value (mb) is less than the imbalance quantity setting value (ma), and is a threshold value indicating that the bias degree of the washings is too small to produce noise even if the adjustment water is not supplied to the liftingribs 6. Namely, when it is determined that the bias load is small or does not exist, and the noise is not produced even if the water is not supplied to the liftingribs 6, the process proceeds to step SP23. - In step SP14, when the
CPU 31 determines that the elapsed time from which the electromagnetic valve X is opened is greater than a set time, the process proceeds to step SP15. Herein, the set time is a time required for onelifting rib 6 being filled with the adjustment water. - In step SP15, the
CPU 31 determines whether the imbalance position (N) is a region Y represented by the parameter table ofFIG. 29 . When it is determined that the imbalance position (N) is the region Y, the process proceeds to step SP16. When it is determined that the imbalance position (N) is not the region Y, the process returns to step SP11. For example, if the initial imbalance position (N) in step SP11 is the region I, the imbalance position (N) is always the region I as long as no calculation is performed again, and the process returns to step SP16. Since a result of the recalculation in step SP16 is changed over time when the electromagnetic valve X supplies the water, the imbalance position (N) is changed from the region I to a region V when the weight of the liftingrib 6 corresponding to theelectromagnetic valve 25c is increased, and the imbalance position (N) is changed to the region Y when step SP15 is repeated multiple times. - In step SP16, the
CPU 31 controls the electromagnetic valve X recorded in the parameter table ofFIG. 29 to be closed, and controls an electromagnetic valve Z to be opened. For example, when the initial imbalance position (N) is the region I, the electromagnetic valve X is theelectromagnetic valve 25c corresponding to the liftingrib 6 arranged opposite to the region I, and the electromagnetic valve Z is theelectromagnetic valve 25b corresponding to the liftingrib 6 located at a position closer to the region I than the liftingrib 6 corresponding to theelectromagnetic valve 25c. Thus, the adjustment water is supplied to the liftingrib 6 corresponding to the electromagnetic valve Z, and the capacity and the position of the bias load are changed. - In step SP17, the
CPU 31 calculates the imbalance quantity (M) and the imbalance position (N) again based on the acceleration value given by theacceleration sensor 12. - In step SP18, the
CPU 31 compares the imbalance quantity (M) with the imbalance quantity setting value (ma) stored in thememory 32, to determine whether M is less than ma. When it is determined that M is less than ma, the process proceeds to step SP19. On the other hand, when it is determined that M is not less than ma, the process proceeds to step SP21 described later. Namely, when it is determined that the bias degree of the washings is too great to be eliminated even if more adjustment water is supplied to the liftingribs 6, the process proceeds to step SP21. - In step SP19, the
CPU 31 compares the imbalance quantity (M) with the imbalance quantity setting value (mb) stored in thememory 32, to determine whether M is less than mb. When it is determined that M is less than mb, the process proceeds to step SP23 described later. Namely, when it is determined that the degree of the bias load is eliminated by supplying the water to thelifting ribs 6 so that no noise is produced, the process proceeds to step SP23. On the other hand, when it is determined that M is not less than mb, the process proceeds to step SP20. - In step SP20, when the
CPU 31 determines that the elapsed time from which the electromagnetic valve Z is opened is greater than the above set time, the process proceeds to step SP21. On the other hand, the process returns to step SP17 when it is determined that the elapsed time from which the electromagnetic valve Z is opened is not greater than the set time. - In step SP21 shown in
FIG. 27 , theCPU 31 enables all the electromagnetic valves X, Y and Z to be in the closed state. - In step SP22, the process returns to step SP1 after the
CPU 31 controls therotating drum 5 to stop rotating. - Thus, when it is determined that the degree of the bias load is too great to be eliminated by supplying the water to the lifting
ribs 6, operations in the steps SP21 and 22 are performed, and the dewatering process is restarted from the first step. - In step SP23 shown in
FIG. 28 , theCPU 31 enables all the electromagnetic valves X, Y and Z to be in the closed state. - In step SP24 shown in
FIG. 28 , theCPU 31 controls therotating drum 5 to rotate at a maximum speed for a specified time, to perform the dewatering process. Then, the dewatering process is ended. - Thus, in the present embodiment, the water is firstly supplied to the lifting
rib 6 which is located at the position farthest from the initially detected imbalance position (N) and greatly affected by the adjustment of the imbalance quantity (M) and position (N). At the end of the water supply to the liftingrib 6, changes of the imbalance quantity (M) and position (N) generated due to the water supply are considered, and the water is supplied to asecond lifting rib 6 as needed. Thus, a case that the adjustment water is not quantitatively supplied to each of the liftingribs 6 due to resistances of wall surfaces of thewater guiding grooves 68 like a case that the water is supplied to the plurality of liftingribs 6 simultaneously is not considered; a difference between speeds at which the water is supplied to the liftingribs 6 is not adjusted by opening and closing theelectromagnetic valves 16, so the number of times of opening and closing of theelectromagnetic valves 16 is small, and the reduction of durability lives of theelectromagnetic valves 16 can be inhibited. - As shown in
FIG. 30 , the following structure according to the present invention can be adopted: a plurality of water storage tanks (bags) 80 as the water storage portions are arranged on the bottom 5c of therotating drum 5.FIG. 30 is a view illustrating a modified embodiment of the second embodiment. Specifically,FIG. 30(a) is a perspective view illustrating a modified embodiment viewed from the bottom 5c of therotating drum 5; andFIG. 30(b) is a local sectional perspective view illustrating the modified embodiment cut near thewater storage tanks 80 and the liftingribs 6. Thewater storage tanks 80 are hollow components arranged on the radial outer side of the waterreceiving ring unit 69 and arranged at the positions corresponding to thelifting ribs 6 by means of a blind region of the waterreceiving ring unit 69. Thewater storage tanks 80 are communicated with thecorresponding lifting ribs 6 throughcommunication ports 80a. The adjustment water flows in from the liftingribs 6 by the centrifugal force. The adjustment water flowing into thewater storage tanks 80 is discharged to thelifting ribs 6 through thecommunication ports 80a when the rotating speed of therotating drum 5 is reduced to reduce the centrifugal force. - In this way, the plurality of
water storage tanks 80 as the water storage portions are mounted on the end surface in the axis S1 direction of the outer surface of therotating drum 5, specifically mounted on the bottom 5c of therotating drum 5, and are respectively communicated with the plurality of liftingribs 6, so more adjustment water can be accumulated by increasing the volume of the liftingribs 6 by means of thewater storage tanks 80; and the bias load can be eliminated safely even if the washing agglomerates are relatively large during dewatering. - Further, the structure of the above embodiment can be applied to a vertical washing machine. In this case, for example, the structure is constituted in such a manner that the water receiving ring unit is configured below the washing drum extending on the axis in a vertical direction, upper surfaces or lower surfaces of the water guiding grooves are opened, and the adjustment water is supplied to the water guiding grooves from above or below.
- 1, 50: washing machine; 2: main body; 3: outer drum; 4: door body; 5: rotating drum (washing drum); 6: lifting rib (balancer); 7: bearing; 8: main shaft; 9: belt pulley; 10: drum motor; 11: transmission belt; 12: acceleration sensor; 13: sensor tag; 14: proximity switch; 15: drain pipe; 16: electromagnetic valve; 17: pump; 18, 69: water receiving ring unit; 19a: water guiding groove; 19b: water guiding groove; 19c: water guiding groove; 20: ring plate; 21: bottom plate; 22a: tubular rod; 22c: tubular rod; 23: water guide ring; 24a: water passing component; 24b: water passing component; 24c: water passing component; 25: nozzle unit; 26a: electromagnetic valve; 26b: electromagnetic valve; 26c: electromagnetic valve; 30: controller; 56: separation component; 68: water guiding groove; 68a: water guiding groove body; 68a1: connecting opening; 68b: bulging portion; 74: water passing component; 80: water storage tank (water storage portion); and T: water storage region.
Claims (4)
- A washing machine, comprising:a washing drum (5);a plurality of hollow balancers (6) arranged on an inner circumferential surface of the washing drum (5) along an axis direction of the washing drum (5), wherein the balancers (6) are lifting ribs for lifting washings;a water receiving ring unit (18, 69), wherein the water receiving ring unit is formed by stacking multiple layers of annular water guiding grooves (19a, 19b, 19c, 68), and fixed to an end in the axis direction of an outer surface of the washing drum (5), wherein the multiple layers of annular water guiding grooves (19a, 19b, 19c, 68) correspond to the balancers (6) respectively;a plurality of water passing components (24a, 24b, 24c, 74) connecting a part of the water guiding grooves (19a, 19b, 19c, 68) with the balancers (6) corresponding to the water guiding grooves (19a, 19b, 19c, 68);a nozzle unit (25) for separately injecting adjustment water into the water guiding grooves (19a, 19b, 19c, 68); characterized bya plurality of water storage tanks (80) disposed on a bottom of the washing drum (5) as water storage portions;wherein the water storage tanks (80) are hollow components arranged on a radial outer side of the water receiving ring unit (18, 69) and arranged at positions corresponding to the hollow balancers (6) by means of a blind region of the water receiving ring unit (18, 69), and are communicated with the corresponding hollow balancers (6) through communication ports (80a);wherein each of the water guiding grooves (19a, 19b, 19c, 68) comprises: an annular water guiding groove body (68a); and bulging portions (68b) protruding from the water guiding groove body (68a) to a radial outer side, wherein a connecting opening (68a1) communicated with the water guiding groove body (68a) is formed in each of the bulging portions (68b) at a lagging side of a rotation direction (X) of the washing drum (5), and each of the bulging portions (68b) is connected with the water passing components (24a, 24b, 24c, 74) at a leading side of the rotation direction (X).
- The washing machine according to claim 1, wherein an inclined plate (6c) inclined downward from a front end to a rear end is arranged inside each of the lifting ribs.
- The washing machine according to claim 1, wherein the washing machine comprises separation components (56) for furling water storage regions inside the balancers (6) in a circumferential direction of the washing drum (5).
- The washing machine according to claim 1, wherein the washing drum (5) is a rotating drum with a substantially horizontal axis, wherein each of the water guiding grooves (19a, 19b, 19c, 68) forming the water receiving unit (18, 69) is formed so that an inner circumferential surface of the water guiding groove (19a, 19b, 19c, 68) is opened and an outer circumferential surface of the water guiding groove (19a, 19b, 19c, 68) is bottomed, and the nozzle unit (25) is arranged at a position on a lower portion of the water receiving ring unit (18, 69) so that water is supplied to the water guiding grooves (19a, 19b, 19c, 68).
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JP2015098635A JP6389799B2 (en) | 2014-05-19 | 2015-05-13 | Washing machine |
PCT/CN2016/082110 WO2016180371A1 (en) | 2015-05-13 | 2016-05-13 | Washing machine |
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CN109183351B (en) * | 2018-10-16 | 2021-06-29 | 无锡小天鹅电器有限公司 | Washing machine, drying control method and device thereof and readable storage medium |
US11053623B2 (en) | 2019-01-23 | 2021-07-06 | Haier Us Appliance Solutions, Inc. | Methods of operating balancing systems of washing machine appliances with motion sensors |
PL3715522T3 (en) * | 2019-03-26 | 2022-09-12 | Electrolux Appliances Aktiebolag | Washing drum for a laundry washing machine and laundry washing machine equipped with such drum |
CN112111927B (en) * | 2019-06-19 | 2023-03-28 | 青岛海尔洗衣机有限公司 | Lifting rib of washing machine and washing machine |
CN112962269A (en) * | 2019-12-12 | 2021-06-15 | 青岛海尔滚筒洗衣机有限公司 | Inner barrel of roller washing machine and assembly method of inner barrel of roller washing machine |
CN114318778B (en) * | 2020-09-30 | 2023-01-31 | 无锡小天鹅电器有限公司 | Balancing device, barrel assembly and laundry equipment |
CN113430778B (en) * | 2021-06-02 | 2022-12-13 | 四川虹美智能科技有限公司 | Eccentricity detection method for drum washing machine, drum washing machine and control method thereof |
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US2534269A (en) * | 1948-05-26 | 1950-12-19 | Kahn | Automatic balancing system for cleaning machine cylinders |
US2610523A (en) * | 1950-12-16 | 1952-09-16 | Leo M Kahn | Automatic balancing system for rotatable article handling machines |
US2717698A (en) * | 1952-12-13 | 1955-09-13 | Us Hoffman Machinery Corp | Automatic balancing device for rotating cylinders |
JP3148695B2 (en) * | 1997-09-11 | 2001-03-19 | 三洋電機株式会社 | Centrifugal dehydrator |
JPH11169595A (en) * | 1997-12-15 | 1999-06-29 | Inamoto Seisakusho:Kk | Device for adjusting balance of spinning drum |
JP2000157788A (en) * | 1998-11-27 | 2000-06-13 | Sanyo Electric Co Ltd | Drum type washing machine |
JP2002355491A (en) * | 2001-03-28 | 2002-12-10 | Sanyo Electric Co Ltd | Washing machine |
EP1391549A1 (en) * | 2001-03-28 | 2004-02-25 | Sanyo Electric Co., Ltd. | Washing machine |
JP4411451B2 (en) * | 2003-12-26 | 2010-02-10 | 株式会社稲本製作所 | Rotating drum balance adjustment method |
KR102032845B1 (en) * | 2013-02-13 | 2019-10-16 | 엘지전자 주식회사 | Laundry Treating Apparatus |
WO2015176536A1 (en) * | 2014-05-19 | 2015-11-26 | 海尔亚洲国际株式会社 | Washing machine |
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- 2016-05-13 WO PCT/CN2016/082110 patent/WO2016180371A1/en active Application Filing
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