CN114901886B - vertical washing machine - Google Patents
vertical washing machine Download PDFInfo
- Publication number
- CN114901886B CN114901886B CN202080090511.0A CN202080090511A CN114901886B CN 114901886 B CN114901886 B CN 114901886B CN 202080090511 A CN202080090511 A CN 202080090511A CN 114901886 B CN114901886 B CN 114901886B
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- Prior art keywords
- rotation
- rotary
- rotor
- laundry
- wing
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- 238000005406 washing Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 claims abstract description 88
- 230000008569 process Effects 0.000 claims abstract description 88
- 230000001154 acute effect Effects 0.000 claims abstract description 11
- 230000002093 peripheral effect Effects 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 15
- 230000018044 dehydration Effects 0.000 abstract description 12
- 238000006297 dehydration reaction Methods 0.000 abstract description 12
- 206010040844 Skin exfoliation Diseases 0.000 description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 238000010981 drying operation Methods 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
- D06F17/06—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid by rotary impellers
- D06F17/10—Impellers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F23/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry
- D06F23/02—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and rotating or oscillating about a horizontal axis
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
A vertical washing machine (1) is provided with: a motor (6); a rotary tub (4); a rotary wing (5) disposed in the rotary barrel (4), wherein a bulge (5B) is provided on the upper surface portion (5A); and a control unit (21) that controls the motor (6) to rotate the rotary tub (4) and the rotary wing (5). The bulge (5B) has a first inclined surface portion on one side in the rotation direction (P) of the rotation wing (5) and a second inclined surface portion on the other side in the rotation direction (P). The acute angle of inclination of the first inclined surface portion is larger than the acute angle of inclination of the second inclined surface portion. The control unit (21) executes a peeling process and a releasing process during a flattening operation after the dehydration operation, wherein the peeling process is a process of repeating the forward rotation and the reverse rotation of the rotary wing (5), and the releasing process is a process of repeating the forward rotation and the reverse rotation of the rotary wing (5) according to a rotation condition different from the peeling process after the peeling process.
Description
Technical Field
The present invention relates to a vertical washing machine.
Background
The vertical washing machine disclosed in the following patent document 1 includes: washing a dehydration barrel; the impeller is arranged at the bottom of the washing and dehydrating barrel; and a motor for rotating the washing and dehydrating tub and the pulsator, respectively. When the dewatering operation of the vertical washing machine is finished, the washed clothes are entangled with each other and cling to the inner wall surface and the bottom of the washing and dewatering barrel. Accordingly, the vertical washing machine performs a peeling process of peeling laundry from the wash tub and an untangling process of untangling intertwined laundry. In both the peeling and detaching processes, the pulsator is rotated in one direction by repeating the turning on and off of the motor.
In a peeling process and a disentangling process for rotating a pulsator in one direction as in the vertical washing machine of patent document 1, it is difficult to efficiently peel laundry from a washing and dehydrating tub or sufficiently disentangle laundry entangled with each other. The laundry directly taken out in a state of being stuck to the inner peripheral portion of the washing and dehydrating tub in a state of being entangled with other laundry, serious wrinkles remain, and thus the flatness of the laundry is impaired.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open publication No. 2018-79061
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made in view of the above circumstances, and an object thereof is to provide a vertical washing machine in which flatness of laundry after a dehydrating operation is improved.
Solution for solving the problem
The present invention is a vertical washing machine, comprising: a driving unit generating a driving force; a rotary tub having an upper end portion formed with an inlet and outlet of laundry and a lower end portion provided with a bottom wall, and rotated by receiving a driving force of the driving unit; a rotary wing disposed on the bottom wall in the rotary tub, configured to rotate by receiving a driving force of the driving unit, and having an upper surface portion provided with a bulge portion bulging upward; and a control unit that controls the drive unit to rotate the rotary tub and the rotary wing, and performs a dehydration operation that dehydrates the laundry in the rotary tub by rotating the rotary tub, and a flattening operation that flattens the laundry in the rotary tub after the dehydration operation, the bulge portion having a first inclined surface portion on one side in a rotation direction of the rotary wing and a second inclined surface portion on the other side in the rotation direction, an inclination angle of an acute angle of the first inclined surface portion with respect to a flat surface of the rotary wing orthogonal to a rotation axis being larger than an inclination angle of an acute angle of the second inclined surface portion with respect to the flat surface, the control unit being capable of causing the rotary wing to perform forward rotation in such a manner that the first inclined surface portion in the bulge portion is advanced than the second inclined surface portion or to perform reverse rotation in such a manner that the second inclined surface portion in the bulge portion is advanced than the first inclined surface portion, and performing peeling treatment in such a manner that the peeling treatment is repeated from the rotary wing and peeling treatment is performed in such a manner that the peeling treatment is repeated from the rotary drum and peeling treatment is performed in such a manner that the peeling treatment is performed in which the peeling treatment is repeated from the rotary wing and peeling treatment is performed in such a manner that the peeling treatment is performed in which the rotating treatment is performed in which the control unit is not repeated.
In the peeling process, the forward rotation time of the rotor is longer than the reverse rotation time of the rotor, and in the unwinding process, the reverse rotation time of the rotor is longer than the forward rotation time of the rotor.
Further, the present invention is characterized in that the rotation speed of the rotor blade in the unwinding process is lower than the rotation speed of the rotor blade in the peeling process.
Effects of the invention
According to the present invention, in the vertical washing machine, since the laundry in the spin basket is dehydrated by the centrifugal force generated by the rotation of the spin basket during the dehydration operation, it is conceivable that a plurality of laundry in the spin basket are entangled with each other and attached to the inner peripheral portion of the spin basket at the end time point of the dehydration operation. Therefore, in the vertical washing machine, a flattening operation for flattening the laundry in the spin basket is performed after the dehydrating operation. In the flattening operation, the peeling process and the untangling process after the peeling process are performed, and the forward rotation and the reverse rotation of the rotary wing are repeatedly performed in both the peeling process and the untangling process.
The upper surface of the rotary wing facing the washings in the rotary barrel is provided with a bulge part bulge upwards, and the bulge part is provided with a first inclined surface part and a second inclined surface part which are respectively arranged at two sides of the rotary wing in the rotary direction, and the first inclined surface part is steeper than the second inclined surface part.
The first slope surface section of the bulge section of the rotary wing in forward rotation is advanced from the second slope surface section. Therefore, during the normal rotation of the rotary wing in the peeling process, the steep first slope surface portion contacts the laundry earlier than the second slope surface portion and pulls down the laundry on the inner peripheral portion of the rotary tub, thereby peeling the laundry from the inner peripheral portion of the rotary tub.
The second slope of the bulge of the rotating wing in the reverse rotation is advanced from the first slope. Therefore, during the reverse rotation of the rotary wing in the untangling process, the second inclined surface portion which is inclined slowly contacts the laundry in the rotary tub earlier than the first inclined surface portion, and bumps the laundry up and down to disperse the laundry, thereby untangling the laundry.
In the peeling process and the unwinding process, the rotation condition of the forward rotation of the rotary wing is different from the rotation condition of the reverse rotation. Therefore, in the peeling process, the forward rotation of the rotary wing is promoted according to the rotation condition mainly including the forward rotation of the rotary wing, so that the laundry can be peeled from the inner portion Zhou Bugao of the rotary tub efficiently. In the disentanglement process after the peeling process, the inversion of the rotary wing is promoted according to the rotation conditions mainly including the inversion of the rotary wing, so that the laundry in the rotary tub can be disentangled efficiently. The wound laundry is peeled off from the inner peripheral portion of the rotary tub and is not easily wrinkled, so that the flatness of the laundry after the dewatering operation can be improved.
Further, according to the present invention, since the forward rotation time of the rotary wing is longer than the reverse rotation time of the rotary wing in the peeling process, the laundry can be peeled from the inside Zhou Bugao of the spin basket effectively by promoting the forward rotation of the rotary wing. On the other hand, in the untangling process, the reverse rotation time of the rotary wing is longer than the forward rotation time of the rotary wing, so that the laundry in the rotary tub can be untangling efficiently by promoting the reverse rotation of the rotary wing.
Further, according to the present invention, the rotation speed of the rotor blade in the unwinding process is lower than that in the peeling process. Therefore, in the untangling process, the laundry in the spin basket is gently bumped up and down by the low-speed reversal of the spin wings, and thus the laundry can be untwisted efficiently without being rewound.
Drawings
Fig. 1 is a schematic longitudinal sectional right side view of a vertical washing machine according to an embodiment of the present invention.
Fig. 2 is a block diagram showing an electrical structure of the vertical washing machine.
Fig. 3 is a perspective view of a rotary wing included in the vertical washing machine.
Fig. 4 is a side view of the rotary wing as seen from arrow a of fig. 3.
Fig. 5 is a time chart showing a flattening operation performed by the vertical washing machine.
Fig. 6 is a top view of a spin tub of the vertical washing machine immediately after the dehydration operation.
Fig. 7 is a plan view of the rotary tub immediately after the peeling process in the flattening operation.
Fig. 8 is a plan view of the rotary tub immediately after the unwinding process in the flat operation.
Description of the reference numerals
1: a vertical washing machine; 4: a rotary tub; 4B: a bottom wall; 4C: an inner peripheral surface; 4D: an upper end portion; 4E: an access opening; 5: a rotary wing; 5A: an upper surface portion; 5B: a bulge; 5C: a first inclined surface portion; 5D: a second inclined surface portion; 6: a motor; 21: a control unit; j: an axis of rotation; p: a rotation direction; p1: a first rotational direction; p2: a second rotational direction; q: washing; t: a flat surface; w1: forward rotation time in the peeling treatment; w2: reversal time in the peeling process; w3: reversal time in the untangling process; w4: forward rotation time in the untangling process; z1: an upper side; alpha: an acute angle of inclination of the first inclined surface portion 5C with respect to the flat surface T; beta: the second inclined surface portion 5D is inclined at an acute angle with respect to the flat surface T.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a schematic vertical sectional right side view of a vertical washing machine 1 according to an embodiment of the present invention. The direction perpendicular to the paper surface of fig. 1 is referred to as a left-right direction X of the vertical washing machine 1, the left-right direction in fig. 1 is referred to as a front-rear direction Y of the vertical washing machine 1, and the up-down direction in fig. 1 is referred to as an up-down direction Z of the vertical washing machine 1. Of the left-right directions X, the back side of the drawing sheet of fig. 1 is referred to as the left side X1 of the vertical washing machine 1, and the front side of the drawing sheet of fig. 1 is referred to as the right side X2 of the vertical washing machine 1. Of the front-rear directions Y, the left side in fig. 1 is referred to as front side Y1, and the right side in fig. 1 is referred to as rear side Y2. Of the vertical directions Z, the upper side is referred to as an upper side Z1, and the lower side is referred to as a lower side Z2.
The vertical washing machine 1 includes: a case 2; an outer tub 3 disposed in the case 2; a rotary tub 4 accommodated in the outer tub 3; a rotary wing 5 disposed at a lower portion of the rotary tub 4; the electric motor 6 is an example of a driving means for generating a driving force for rotating the rotary tub 4 and the rotary wing 5; and an electric transmission mechanism 7 for transmitting the driving force of the motor 6 to the rotary tub 4 and the rotary wing 5.
The case 2 is made of metal, for example, and is formed in a box shape. An opening 2B for allowing the inside and outside of the case 2 to communicate is formed in the upper surface portion 2A of the case 2. A door 8 for opening and closing the opening 2B is provided on the upper surface portion 2A. A display operation portion 9 including a switch, a liquid crystal panel, and the like is provided in a region of the upper surface portion 2A on the front side Y1 of the opening 2B, for example. The user can freely select the operation condition of the vertical washing machine 1 or instruct the vertical washing machine 1 to start or stop operation by operating the switch or the like of the display operation unit 9. Information related to the operation of the vertical washing machine 1 is visually displayed on a liquid crystal panel or the like of the display operation unit 9.
The outer tub 3 is made of, for example, resin, and is formed in a bottomed cylindrical shape. The outer tub 3 is connected to the casing 2 by a support member 10 such as a hanger bar or a damper having a spring and a damper mechanism, and is elastically supported by the support member 10. The outer tub 3 has: a substantially cylindrical circumferential wall 3A disposed in the up-down direction Z; a bottom wall 3B closing the hollow portion of the circumferential wall 3A from the lower side Z2; and an annular wall 3C protruding toward the center of the circumferential wall 3A while wrapping the upper side Z1 of the circumferential wall 3A. An inlet 3D communicating from the upper side Z1 to the hollow portion of the circumferential wall 3A is formed inside the annular wall 3C. The doorway 3D is located opposite to and in communication with the opening 2B of the cabinet 2 from the lower side Z2. The annular wall 3C is provided with a door 11 for opening and closing the doorway 3D. The bottom wall 3B is formed in a circular plate shape extending substantially horizontally, and a through hole 3E penetrating the bottom wall 3B is formed at the center position of the bottom wall 3B.
The water can be stored in the outer barrel 3. A water supply path 12 connected to a tap water supply is connected to the outer tub 3 from the upper side Z1, and tap water is supplied from the water supply path 12 into the outer tub 3. A water supply valve 13 that opens and closes to start or stop water supply is provided in the middle of the water supply path 12. The drain passage 14 is connected to the outer tub 3 from the lower side Z2, and water in the outer tub 3 is discharged from the drain passage 14 to the outside. A drain valve 15 that opens and closes to start or stop draining is provided in the middle of the drain passage 14.
The rotary tub 4 is made of metal, for example, and is formed in a bottomed cylindrical shape smaller than the outer tub 3 by one turn, and can accommodate the laundry Q therein. The rotary tub 4 has a substantially cylindrical circumferential wall 4A disposed in the up-down direction Z and a bottom wall 4B closing the hollow portion of the circumferential wall 4A from the lower side Z2.
The inner peripheral surface 4C of the circumferential wall 4A constitutes the inner peripheral portion of the rotary tub 4. The upper end of the inner peripheral surface 4C becomes the upper end 4D of the entire rotary tub 4. A doorway 4E surrounded by the upper end of the inner circumferential surface 4C is formed in the upper end 4D of the rotary tub 4. The inlet/outlet 4E exposes the hollow portion of the circumferential wall 4A to the upper side Z1. The doorway 4E is located opposite to and in communication with the doorway 3D of the outer tub 3 from the lower side Z2. The doorway 3D and the doorway 4E are opened and closed together by the door 11. A user of the vertical washing machine 1 puts laundry Q in and out of the spin basket 4 through the opened opening 2B, the doorway 3D, and the doorway 4E.
The rotary tub 4 is coaxially accommodated within the outer tub 3. The outer tub 3 and the rotary tub 4 constitute a washing tub 16. The entire washing tub 16 is elastically supported by the support member 10. The rotary tub 4 accommodated in the outer tub 3 is rotatable about a rotation axis J which is formed as a central axis thereof and extends in the up-down direction Z. A plurality of through holes, not shown, are formed in at least one of the circumferential wall 4A and the bottom wall 4B of the rotary tub 4, and water in the outer tub 3 can flow between the outer tub 3 and the rotary tub 4 through the through holes. Therefore, the water level in the outer tub 3 coincides with the water level in the rotary tub 4.
The bottom wall 4B of the rotary tub 4 is a lower end portion of the rotary tub 4, and is formed in a circular plate shape extending substantially parallel to the bottom wall 3B of the outer tub 3 at a distance from the upper side Z1. A through hole 4F penetrating the bottom wall 4B is formed at a center position of the bottom wall 4B, which coincides with the rotation axis J. The bottom wall 4B is provided with a tubular support shaft 17 extending downward Z2 along the rotation axis J while surrounding the through hole 4F. The support shaft 17 is inserted through the through hole 3E of the bottom wall 3B of the outer tub 3, and the lower end portion of the support shaft 17 is located below the bottom wall 3B by Z2.
The rotary vane 5 is a so-called pulsator, and is formed in a disk shape centering on the rotation axis J, and is disposed coaxially with the rotary tub 4 on the bottom wall 4B in the rotary tub 4. A plurality of raised portions 5B radially arranged about the rotation axis J are provided on the upper surface portion 5A of the rotation wing 5 facing the inlet/outlet 4E of the rotation tub 4. The bulge 5B is a blade portion in the rotor wing 5.
In the present embodiment, one ridge portion 5B is provided at each of the two ridge portions 5B at positions offset 180 degrees in the rotation direction P about the rotation axis J of the rotor 5, and each ridge portion 5B is formed so as to protrude upward Z1 while extending in the radial direction R with respect to the rotation axis J (see fig. 3). Each of the bulge portions 5B has a first slope portion 5C on one side in the rotation direction P and a second slope portion 5D on the other side in the rotation direction P, and the first slope portion 5C and the second slope portion 5D are arranged on both sides of the bulge portion 5B in the rotation direction P one by one so as to be inverted V-shaped, i.e., mountain-shaped, which is asymmetric left and right as viewed from the outside in the radial direction R (see fig. 4).
The acute angle α of the first inclined surface portion 5C with respect to the virtual flat surface T orthogonal to the rotation axis J is larger than the acute angle β of the second inclined surface portion 5D with respect to the flat surface T (see fig. 4). That is, the inclination of the first slope portion 5C is steeper than that of the second slope portion 5D. For example, the inclination angle α is about 45 degrees, and the inclination angle β is about 35 degrees. The entire area of each of the first inclined surface portion 5C and the second inclined surface portion 5D may not be formed by a flat surface. In this case, the angle at which the flat portion of the first inclined surface portion 5C intersects with the flat surface T at an acute angle may be defined as the inclination angle α, or the angle at which the virtual tangent to the curved surface portion of the first inclined surface portion 5C intersects with the flat surface T at an acute angle may be defined as the inclination angle α. The same is true for the definition of the inclination angle β of the second slope portion 5D.
The rotary wing 5 is provided with a rotary shaft 18 extending from the center thereof to the lower side Z2 along the rotation axis J. The rotation shaft 18 is inserted through the hollow portion of the support shaft 17, and the lower end portion of the rotation shaft 18 is positioned below the bottom wall 3B of the outer tub 3 by Z2. The region other than the raised portion 5B in the upper surface portion 5A of the rotor blade 5 may be disposed at a position lower than the raised portion 5B, and may be, for example, a tapered surface that descends as it approaches the rotation axis J side. Further, a hemispherical convex portion 5E protruding toward the upper side Z1 at the center between the two raised portions 5B may be provided on the upper surface portion 5A, or a plurality of through holes 5F penetrating the rotary wing 5 in the up-down direction Z may be formed (see fig. 3).
The motor 6 is constituted by a variable frequency motor, for example. The motor 6 is disposed at the lower side Z2 of the outer tub 3 in the case 2. The motor 6 has an output shaft 19 that rotates about a rotation axis J. The transmission mechanism 7 is interposed between respective lower end portions of the support shaft 17 and the rotary shaft 18 and an upper end portion of the output shaft 19.
The transmission mechanism 7 selectively transmits the driving force output from the output shaft 19 by the motor 6 to one or both of the support shaft 17 and the rotation shaft 18. The transmission mechanism 7 may be a known mechanism. In the present embodiment, the motor 6 and the transmission mechanism 7 are fixed to the outer tub 3, but the motor 6 may be fixed to the case 2, and the driving force of the motor 6 may be transmitted from the transmission mechanism 7 to the support shaft 17 and the rotation shaft 18 via a transmission member such as a belt. When the driving force of the motor 6 is transmitted to the support shaft 17, the rotary tub 4 receives the driving force of the motor 6 to rotate about the support shaft 17, that is, the rotation axis J. When the driving force of the motor 6 is transmitted to the rotation shaft 18, the rotary wing 5 receives the driving force of the motor 6 to rotate about the rotation shaft 18, that is, the rotation axis J. The rotation direction of each of the rotary tub 4 and the rotary wing 5 is the above-described rotation direction P. The rotation direction P includes a counterclockwise first rotation direction P1 in a plan view and a clockwise second rotation direction P2 in a plan view (see also fig. 3). The first rotation direction P1 and the second rotation direction P2 are directions opposite to each other. Further, in the present embodiment, the rotation direction of the motor 6, that is, the rotation direction of the output shaft 19 coincides with the respective rotation directions P of the rotary tub 4 and the rotary wing 5.
Fig. 2 is a block diagram showing an electrical structure of the vertical washing machine 1. The vertical washing machine 1 includes a control unit 21 as an example of a control unit. The control unit 21 is configured as a microcomputer including a CPU22, a memory 23 such as a ROM or a RAM, and a timer 24 for counting time, and is incorporated in the casing 2 (see also fig. 1).
The vertical washing machine 1 further includes a water level sensor 25 and a rotation speed sensor 26. The motor 6, the transmission mechanism 7, the water supply valve 13, the drain valve 15, the display operation unit 9, the water level sensor 25, and the rotation speed sensor 26 are electrically connected to the control unit 21.
The control unit 21 controls the rotation of the motor 6 to generate a driving force to the motor 6 or to stop the rotation of the motor 6. The control unit 21 controls the transmission mechanism 7 to switch the transmission target of the driving force of the motor 6 to one or both of the support shaft 17 and the rotation shaft 18. When the driving force of the motor 6 is transmitted to the support shaft 17, the rotary tub 4 rotates. When the driving force of the motor 6 is transmitted to the rotation shaft 18, the rotation wing 5 rotates. In this way, the control unit 21 controls the motor 6 and the transmission mechanism 7 to rotate the rotary tub 4 and the rotary wing 5.
The control unit 21 can control the rotation direction of the motor 6 to rotate the motor 6 forward or backward. The motor 6 rotates forward, and the rotary tub 4 and the rotary wing 5 also rotate forward, and the motor 6 rotates backward, and the rotary tub 4 and the rotary wing 5 also rotate backward. In the present embodiment, the rotary tub 4 and the rotary vane 5, which receive the driving force of the motor 6 that rotates in the forward direction, rotate in the first rotation direction P1 (see fig. 3). In each ridge portion 5B of the rotating blade 5 in normal rotation, the first inclined surface portion 5C is advanced from the second inclined surface portion 5D (see also fig. 4). The rotary tub 4 and the rotary wing 5 receiving the driving force of the reversed motor 6 are reversed in the second rotation direction P2 (refer to fig. 3). In each ridge portion 5B of the rotating blade 5 in the reverse rotation, the second inclined surface portion 5D is advanced from the first inclined surface portion 5C (see also fig. 4).
The control unit 21 controls opening and closing of the water supply valve 13 and the drain valve 15. When the control part 21 opens the water supply valve 13 in a state of closing the drain valve 15, water is supplied to the washing tub 16 to store water. When the control part 21 opens the drain valve 15, the washing tub 16 drains. When the user operates the display operation unit 9 to select the dewatering condition or the like of the laundry Q, the control unit 21 receives the selection. The control section 21 controls the display of the display operation section 9.
The water level sensor 25 is a sensor that senses the water level of the washing tub 16, that is, the water levels of the outer tub 3 and the rotary tub 4, and a detection result of the water level sensor 25 is input to the control part 21 in real time. The rotation speed sensor 26 is a device that detects the rotation speed of the motor 6, more precisely, the rotation speed of the output shaft 19 in the motor 6, and is constituted by, for example, a hall IC. The rotational speed read by the rotational speed sensor 26 is input to the control unit 21 in real time. The control unit 21 controls the duty ratio of the voltage applied to the motor 6, for example, based on the input rotation speed, thereby rotating the motor 6 at a desired rotation speed. In the present embodiment, the rotation speed of the rotary tub 4 is the same as the rotation speed of the motor 6. In practice, the rotational speed of the rotor 5 is a value obtained by multiplying a predetermined constant such as a reduction ratio in the transmission mechanism 7 by the rotational speed of the motor 6, that is, a value lower than the rotational speed of the motor 6. However, in the present embodiment, the rotation speed of the rotor 5 is regarded as the same as the rotation speed of the motor 6. The rotation speed sensor 26 also detects the rotation speed of each of the rotary tub 4 and the rotary wing 5 by detecting the rotation speed of the motor 6.
Next, the washing operation, the rinsing operation, and the dehydrating operation performed by the control unit 21 in the vertical washing machine 1 will be described. The vertical washing machine 1 is not limited to a general vertical washing machine that sequentially performs a washing operation, a rinsing operation, and a dehydrating operation, but includes a vertical washing and drying integrated machine that also performs a drying operation of drying the laundry Q, but a description of the drying operation is omitted below.
During the washing operation, the control unit 21 supplies water to the washing tub 16 for a predetermined time, and rotates only the rotor 5 by the motor 6. Accordingly, the laundry Q in the rotary tub 4 is agitated by the bulge portion 5B of the rotary wing 5 rotating in a state of facing the laundry Q from the lower side Z2, or is cleaned by the detergent put into the rotary tub 4 before the start of the cleaning operation to break down the dirt. In the rinsing operation after the washing operation, the control unit 21 supplies water to the washing tub 16 for a predetermined time, and rotates only the rotary wing 5 by the motor 6. Thereby, the laundry Q in the rotary tub 4 is rinsed by the water flow of the tap water generated in the rotary tub 4 by the rotating wing 5. The rinsing operation may be performed a plurality of times.
During the dehydration operation, the control unit 21 rotates the rotary tub 4 and the rotary wing 5 at a high speed. Specifically, the control unit 21 controls the motor 6 as follows: the motor 6 is turned on stepwise to increase the rotational speed of the motor 6, and the rotational speed of the motor 6 is finally increased to a predetermined rotational speed for dehydration such as 800rpm to 1000rpm, and then rotated at the rotational speed for dehydration. Thereby, the rotary tub 4 and the rotary wing 5 are also rotated at the dehydration speed. The laundry Q in the rotary tub 4 is moved outward in the radial direction R by the centrifugal force generated by the rotation and is pressed against the inner peripheral surface 4C of the rotary tub 4, whereby the laundry Q is dehydrated. The drain valve 15 is opened during the dewatering operation, and the water oozed out of the laundry Q by the dewatering operation is discharged through the drain passage 14. When the steady rotation of the rotary tub 4 at the dehydration rotation speed continues for a predetermined time, the control unit 21 turns off the motor 6 to stop the rotation of the motor 6. Thereby, the dewatering operation is ended. The spin-drying operation may include an intermediate spin-drying operation performed between the washing operation and the rinsing operation, and a final spin-drying operation performed after the final rinsing operation.
It is assumed that a plurality of laundry Q in the rotary tub 4 are entangled with each other and attached to the inner peripheral surface 4C of the rotary tub 4 at the end time point of the dewatering operation, specifically, the final dewatering operation (see fig. 6 described later). The laundry Q in this state is not easily taken out from the rotary tub 4, and it is laborious to unwind the laundry Q entangled with each other. When the entangled laundry Q is left alone, the flatness of the laundry Q is impaired by the serious wrinkles remaining on the laundry Q, and thus it is required to unwind the entangled laundry Q as soon as possible. Therefore, the control unit 21 performs a flattening operation for flattening the laundry Q in the rotary tub 4 after the dehydrating operation.
The flattening operation will be described mainly with reference to the time chart of fig. 5. In the time chart of fig. 5, the horizontal axis represents the elapsed time, and the vertical axis represents the rotation speed (unit: rpm) of the motor 6. On the vertical axis, the upper part of 0rpm indicates the rotation speed of the motor 6 during normal rotation, and the lower part of 0rpm indicates the rotation speed of the motor 6 during reverse rotation. The rotation speed in the present embodiment is an absolute value. As described above, in the present embodiment, the rotation speed of the rotor 5 is regarded as the same as the rotation speed of the motor 6, and therefore, the time chart of fig. 5 shows the transition of the rotation speed of the rotor 5. The flattening operation includes a peeling process and a disentangling process after the peeling process, and the control section 21 sequentially executes these processes in the flattening operation.
In the peeling process, the control unit 21 first controls the motor 6 and the transmission mechanism 7, sets the transmission target of the driving force of the motor 6 to the rotor 5 only, and then reverses the rotor 5 by repeating the turning on and off of the motor 6. The reverse rotation of the rotor 5 means that the rotor 5 alternately repeats forward rotation and reverse rotation. The maximum rotation speed V1 of the rotor blade 5 in the normal rotation is, for example, 700rpm. The control unit 21 maintains the rotation speed of the rotor 5 at the maximum rotation speed V1 for a predetermined forward rotation time W1 when the rotor 5 rotates forward, and stably rotates the rotor 5 at the maximum rotation speed V1. The maximum rotation speed V2 of the rotor 5 at the time of reverse rotation is, for example, 700rpm. The control unit 21 maintains the rotation speed of the rotor 5 at the maximum rotation speed V2 for a predetermined inversion time W2 when the rotor 5 is inverted, and stably rotates the rotor 5 at the maximum rotation speed V2. Although the maximum rotation speed V1 is the same as the maximum rotation speed V2 in the present embodiment, they may be different. On the other hand, in the peeling process, the forward rotation time W1 of the rotary wing 5 is longer than the reverse rotation time W2 of the rotary wing 5. The forward rotation time W1 and the reverse rotation time W2 are not limited to the time when the rotation speed of the rotor 5 is maintained at the maximum rotation speed, and may refer to the time when the rotation speed of the rotor 5 is increased from 0rpm to the maximum rotation speed and then decreased to 0rpm, that is, the on time of the motor 6.
In each of the raised portions 5B of the rotary wing 5 in the normal rotation in the first rotation direction P1, the first inclined surface portion 5C having a steep inclination contacts the laundry Q attached to the inner peripheral surface 4C of the rotary tub 4 in a state of being entangled with each other before the second inclined surface portion 5D and pulls down the laundry Q in the rotation direction P, thereby peeling the laundry Q from the inner peripheral surface 4C and bringing the laundry closer to the rotation axis J side of the rotary tub 4 (see fig. 7). In the peeling process, since the forward rotation time W1 of the rotary wing 5 is longer than the reverse rotation time W2 of the rotary wing 5 as described above, the forward rotation of the rotary wing 5 is promoted in accordance with the rotation condition mainly including the forward rotation of the rotary wing 5, whereby the laundry Q can be peeled efficiently from the inner peripheral surface 4C of the rotary tub 4. In the peeling process, the second slope 5D passes the lower side Z2 of the laundry Q peeled from the inner peripheral surface 4C in the respective ridge portions 5B of the rotary wing 5 sequentially reversing the reversing time W2 in the second rotation direction P2, whereby the laundry Q bumps up and down, and thus the laundry Q is rapidly dispersed in the rotary tub 4.
When the reversal of the rotor blade 5 is continued for a peeling time of, for example, 20 seconds, the control unit 21 turns off the motor 6 to terminate the peeling process. At the end of the peeling process, the laundry Q peeled from the inner peripheral surface 4C in the rotary tub 4 is in a state of being gathered on the rotation axis J side of the rotary tub 4 and slightly unwound (refer to fig. 7).
In the untangling process after the peeling process, the control unit 21 repeatedly turns on and off the motor 6 while continuing to set the transmission target of the driving force of the motor 6 to only the rotor 5, thereby reversing the rotor 5. That is, the control unit 21 alternately repeats the normal rotation and the reverse rotation of the rotor 5 during the unwinding process. However, in the peeling process and the untangling process, the rotation conditions of the forward rotation and the reverse rotation of the rotary wing 5 are different. Specifically, the peeling process starts from the time when the rotary wing 5 rotates forward, but the untangling process starts from the time when the rotary wing 5 rotates backward. The maximum rotation speed V3 of the rotor blade 5 at the time of reversing the unwinding process is lower than the maximum rotation speed V2 of the rotor blade 5 at the time of reversing the peeling process, and is, for example, 300rpm to 450 rpm. The maximum rotation speed V4 of the rotor blade 5 during normal rotation in the unwinding process is lower than the maximum rotation speed V1 of the rotor blade 5 during normal rotation in the peeling process, and is, for example, 300rpm to 450 rpm. In this way, the rotation speed of the rotor blade 5 in the unwinding process is lower than the rotation speed of the rotor blade 5 in the peeling process.
In the unwinding process, the control unit 21 maintains the rotation speed of the rotor 5 at the maximum rotation speed V3 for a predetermined inversion time W3 when the rotor 5 is inverted, and stably rotates the rotor 5 at the maximum rotation speed V3. On the other hand, the control unit 21 maintains the rotation speed of the rotor 5 at the maximum rotation speed V4 for a predetermined forward rotation time W4 during the forward rotation of the rotor 5, and stably rotates the rotor 5 at the maximum rotation speed V4. In the present embodiment, the maximum rotation speed V3 is the same as the maximum rotation speed V4, but they may be different. On the other hand, in the untangling process, the reverse rotation time W3 of the rotary wing 5 is longer than the forward rotation time W4 of the rotary wing 5. The reverse rotation time W3 and the forward rotation time W4 are not limited to the time when the rotation speed of the rotor 5 is maintained at the maximum rotation speed, and may refer to the time when the rotation speed of the rotor 5 is increased from 0rpm to the maximum rotation speed and then decreased to 0rpm, that is, the on time of the motor 6.
In the untangling process, the second inclined surface portion 5D, which is inclined gradually, passes the lower side Z2 of the laundry Q peeled off from the inner peripheral surface 4C earlier than the first inclined surface portion 5C in each of the raised portions 5B of the rotary wing 5 in the reverse rotation to the second rotation direction P2, thereby pitching the laundry Q up and down for a long period of time. Accordingly, the plurality of laundry Q (see fig. 7) peeled from the inner peripheral surface 4C of the rotary tub 4 in the entangled state by the peeling process are dispersed by being bumpy, and therefore the entanglement between the plurality of laundry Q in the rotary tub 4 can be efficiently released. In the disentanglement processing, since the reverse rotation time W3 is longer than the normal rotation time W4 as described above, the inversion of the rotation wings 5 is promoted in accordance with the rotation conditions mainly including the inversion of the rotation wings 5, whereby the laundry Q in the rotary tub 4 can be disentangled efficiently. In the disentanglement process, the rotation wings 5 are sequentially rotated forward for the forward rotation time W4, whereby the first slope 5C of each of the bulge portions 5B brings the laundry Q on the inner peripheral surface 4C side of the rotation tub 4 to the rotation axis J side rapidly.
When the reversal of the rotor 5 is continued for a time period of, for example, 40 seconds, the control unit 21 turns off the motor 6 to terminate the unwinding process. Thus, the entire flattening operation ends. The time required for the entire flattening operation is, for example, 1 minute. At the end of the flattening operation, the laundry Q peeled off from the inner peripheral surface 4C in the rotary tub 4 is in a loose state (see fig. 8) in which the laundry Q gathers on the rotary axis J side of the rotary tub 4 and is released. That is, since the laundry Q in the spin basket 4 after the flattening treatment is disposed at a position on the spin center side of the spin basket 4 where the laundry Q is easily taken out in a state where the laundry Q is unwound, the user can easily take out the laundry Q in the spin basket 4.
In this way, in the flattening operation, the laundry Q is peeled off from the inner peripheral surface 4C of the rotary tub 4 by the peeling treatment and then is unwound by the unwinding treatment so as not to be entangled with other laundry Q, and therefore, serious wrinkles are not easily left on the laundry Q taken out from the rotary tub 4. Therefore, the flatness of the laundry Q after the dewatering operation can be improved. Further, as described above, the rotation speed of the rotary wing 5 in the untangling process is lower than the rotation speed of the rotary wing 5 in the peeling process. Therefore, in the peeling process, the laundry Q on the inner peripheral surface 4C of the rotary tub 4 is pulled down without omission by the high-speed forward rotation of the rotary wing 5, and therefore the laundry Q can be peeled off efficiently from the inner peripheral surface 4C of the rotary tub 4. On the other hand, in the disentanglement process, the laundry in the spin basket 4 is gently bumped up and down by the low-speed reversal of the rotor 5, so that the laundry Q can be efficiently disentangled from each other without being rewound. In the peeling process and the untangling process, if the rotor 5 is rotated in one direction only in one direction of the forward rotation direction or the reverse rotation direction, the laundry Q may be twisted. However, by reversing the rotary wing 5 as in the present embodiment, the laundry Q can be peeled from the inner peripheral surface 4C of the rotary tub 4 while suppressing the kink of the laundry Q in the peeling process, and the entanglement of the laundry Q can be released while suppressing the kink of the laundry Q in the releasing process.
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope described in the claims.
For example, the rotation axis J, which is the rotation center of the rotary tub 4, extends vertically in the present embodiment, but may be arranged to be inclined with respect to the vertical direction.
The number of the raised portions 5B provided on the upper surface portion 5A of the rotor blade 5 may be arbitrarily changed, and may be, for example, singular.
Claims (1)
1. A vertical washing machine, comprising:
a driving unit generating a driving force; the driving unit is an electric motor;
a rotary tub having an upper end portion formed with an inlet and outlet of laundry and a lower end portion provided with a bottom wall, and rotated by receiving a driving force of the driving unit;
a rotary wing disposed on the bottom wall in the rotary tub, configured to rotate by receiving a driving force of the driving unit, and having an upper surface portion provided with a bulge portion bulging upward;
an electric transmission mechanism for transmitting a driving force of the motor to the rotary tub and the rotary wing; and
a control unit which is a control unit for controlling the driving unit to rotate the rotary tub and the rotary wing and for performing a dehydrating operation for dehydrating laundry in the rotary tub by rotating the rotary tub and a flattening operation for flattening the laundry in the rotary tub after the dehydrating operation,
the bulge part is provided with a first inclined surface part on one side in the rotation direction of the rotating wing and a second inclined surface part on the other side in the rotation direction,
the first inclined surface portion has a larger inclination angle with respect to an acute angle of a flat surface of the rotation wing orthogonal to the rotation axis than the second inclined surface portion,
the control unit may cause the rotation wing to rotate forward in such a manner that the first inclined surface portion in the bulge portion is advanced over the second inclined surface portion or to rotate backward in such a manner that the second inclined surface portion in the bulge portion is advanced over the first inclined surface portion,
the control unit performs a peeling process of peeling laundry from an inner peripheral portion of the rotary tub by repeating forward rotation and reverse rotation of the rotary wing during the flattening operation, and a disentangling process of disentangling laundry in the rotary tub by repeating forward rotation and reverse rotation of the rotary wing in accordance with a rotation condition different from the peeling process after the peeling process;
in the peeling process, the control unit controls the motor and the transmission mechanism, sets a transmission target of the driving force of the motor as only the rotor blade, and reverses the rotor blade by repeating the turning on and off of the motor; the reverse rotation of the rotating wings means that the rotating wings alternately repeat forward rotation and reverse rotation;
the highest rotating speed of the rotating wing in the forward rotation is V1; the control unit maintains the rotation speed of the rotor at a maximum rotation speed V1 during a predetermined forward rotation time W1 when the rotor is rotating forward, and stably rotates the rotor at the maximum rotation speed V1; the highest rotating speed of the rotating wing during the reverse rotation is V2; the control unit maintains the rotation speed of the rotor at a maximum rotation speed V2 during a predetermined inversion time W2 when the rotor is inverted, and stably rotates the rotor at the maximum rotation speed V2;
in the peeling process, a forward rotation time W1 of the rotary wing is longer than a reverse rotation time W2 of the rotary wing; in the peeling process, the forward rotation time W1 of the rotary wing is longer than the reverse rotation time W2 of the rotary wing, and the forward rotation of the rotary wing is promoted according to the rotation condition mainly including the forward rotation of the rotary wing, so that the laundry Q can be peeled efficiently from the inner peripheral surface of the rotary tub;
in the unwinding process, the control unit maintains the rotation speed of the rotor at a maximum rotation speed V3 for a predetermined inversion time W3 during inversion of the rotor, and stably rotates the rotor at the maximum rotation speed V3; the control unit maintains the rotation speed of the rotor at a maximum rotation speed V4 during a predetermined forward rotation time W4 when the rotor is rotating forward, and stably rotates the rotor at the maximum rotation speed V4; in the untangling process, a reverse rotation time W3 of the rotary wing is longer than a forward rotation time W4 of the rotary wing; in the untangling process, the reverse rotation time W3 is longer than the forward rotation time W4, and the rotation of the rotary wing is promoted according to the rotation condition mainly including the reverse rotation of the rotary wing, so that the laundry Q in the rotary tub can be untangling efficiently;
the rotational speed of the rotor blade in the unwinding process is lower than the rotational speed of the rotor blade in the peeling process.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-237023 | 2019-12-26 | ||
| JP2019237023A JP7411955B2 (en) | 2019-12-26 | 2019-12-26 | vertical washing machine |
| PCT/CN2020/131354 WO2021129280A1 (en) | 2019-12-26 | 2020-11-25 | Top-loading washing machine |
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| Publication Number | Publication Date |
|---|---|
| CN114901886A CN114901886A (en) | 2022-08-12 |
| CN114901886B true CN114901886B (en) | 2023-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202080090511.0A Active CN114901886B (en) | 2019-12-26 | 2020-11-25 | vertical washing machine |
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| Country | Link |
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| JP (1) | JP7411955B2 (en) |
| CN (1) | CN114901886B (en) |
| WO (1) | WO2021129280A1 (en) |
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Also Published As
| Publication number | Publication date |
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| JP7411955B2 (en) | 2024-01-12 |
| WO2021129280A1 (en) | 2021-07-01 |
| JP2021104212A (en) | 2021-07-26 |
| CN114901886A (en) | 2022-08-12 |
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