JP6437740B2 - Washing machine - Google Patents

Description

  Embodiments described herein relate generally to a washing machine.

  In a vertical axis type washing machine having a stirring body at the bottom in a washing tub, in order to wash delicate clothes that are liable to lose shape or become damaged, the following structure is known.

  That is, a partition plate having a water passage hole above the stirrer is horizontally installed in the washing tub, and the washing water in the washing tub is stirred by the stirrer in a state where clothes are placed on the partition plate. At the same time, the washing water in the washing tub is pumped up by the pumping mechanism, and the washing water pumped up from above is sprayed on the clothes on the partition plate. As a result, it is known that clothes do not come into direct contact with the stirrer, and that clothes such as delicate clothes can be washed while preventing loss of shape and fabric damage (see, for example, Patent Documents 1 and 2 below).

JP-A-9-225175 Japanese Patent Laid-Open No. 10-235076

  However, in the washing machine as described above, since the pumping mechanism always sprinkles the washing water from the same position with respect to the clothing on the partition plate, uneven washing tends to occur.

  Accordingly, an object of the present invention is to provide a washing machine capable of suppressing washing unevenness and enhancing the washing effect of clothes when washing delicate clothes while preventing damage to the clothes.

The washing machine of the present embodiment includes a vertical washing tub, an agitator provided on the inner bottom surface of the washing tub, and the washing water in the washing tub is pumped upward from the discharge port to the inside of the washing tub. A pumping mechanism for spraying water, a control unit for controlling the rotation of the agitator, and a partition plate that is detachably mounted to the laundry tub above the agitator and below the discharge port and divides the laundry tub vertically The pumping mechanism includes a pump blade provided on a lower surface of the agitator, a pump chamber formed between the pump blade and the inner bottom surface of the washing tub, and a peripheral wall of the washing tub. A water passage having a lower portion communicating with the pump chamber and having the discharge port provided in an upper portion, and the pump blades send washing water from the pump chamber to the water passage by rotation of the stirring member. watering from the discharge port, wherein, the washing In operation for washing the placed garment on said partition plate mounted fixed within, watering and washing clothes and from the discharge port by rotating the agitator to put clothing on the partition plate After the first operation, and after the first operation, the water level in the washing tub is higher than the partition plate and the clothes placed on the partition plate are receiving buoyancy, without watering to clothing, the washing tub is rotated together with the partition plate, to perform a second operation for changing the relative position between the garment and the discharge port around the longitudinal axis of the washing tub.

It is sectional drawing of the washing machine which shows 1st Embodiment of this invention. It is a perspective view of a partition plate. It is a disassembled perspective view of a partition plate. It is a block diagram which shows roughly the electric constitution of a washing machine. It is a figure which shows the electricity supply pattern to the motor in the 1st drive time limit. It is a figure which shows the electricity supply pattern to the motor in the 2nd drive time limit. It is a vertical side view which shows roughly the method of discharge of a shower water flow. It is a vertical side view which shows roughly the mode of the water flow in a washing tub. It is a top view which shows roughly the mode of the water flow of a partition plate upper surface part. It is a flowchart which shows the process sequence of the washing operation which a control apparatus performs. It is sectional drawing of the washing machine which shows the example of a change of 1st Embodiment. It is sectional drawing of the washing machine which shows 2nd Embodiment.

(First embodiment)
Hereinafter, a first embodiment will be described with reference to the drawings.

  A washing machine 1 according to this embodiment shown in FIG. 1 is a fully automatic washing machine of a vertical axis type, and a water tank 3 for storing washing water in an outer box 2 having a substantially rectangular shape is provided by an elastic suspension mechanism 4. It is provided elastically supported. In the water tub 3, a vertical washing tub 5 is provided, and a stirring body 6 is provided at the inner bottom of the washing tub 5.

  On the outer bottom of the water tub 3, there are provided a motor 7 that is a rotational drive source, and a mechanism portion 8 that transmits the rotation of the motor 7 and rotationally drives the washing tub 5 and the stirring body 6. The agitator 6 is connected to the output shaft 7a of the motor 7 and is driven to rotate. By switching the clutch (not shown), the mechanism unit 8 connects the output shaft 7a of the motor 7 to the stirring body 6 during washing and rinsing, and is connected to the washing tub 5 and the stirring body 6 during dehydration. Thereby, in this embodiment, the stirring body 6 is rotated forward and backward during the washing and rinsing operation, and the washing tub 5 and the stirring body 6 are integrally rotated at a high speed during the dehydration operation. In addition, the position change operation of the garment W, which will be described later, may be executed during the washing and rinsing operation. During this operation, the output shaft 7a of the motor 7 is connected to the washing tub 5 and the stirring body 6, and the washing tub 5 and The stirrer 6 integrally rotates in one direction, either forward or reverse.

  A drainage valve 10 and a drainage hose 11 are connected to the drainage port 9 provided in the outer bottom portion of the water tank 3, and an air trap 12 is provided in the drainage port 9 portion. The air trap 12 is provided with a water level sensor 13 (shown only in FIG. 4) for detecting the water level in the washing tub 5.

  The washing tub 5 has a cylindrical shape whose upper and lower surfaces are open, for example, a peripheral wall portion 30 made of SUS, a plastic tub bottom portion 31 connected to the lower end portion of the peripheral wall portion 30, and an upper end portion of the peripheral wall portion 30. The balance ring 32 is provided. As is well known, the balance ring 32 is configured by containing a liquid mainly composed of calcium chloride or sodium chloride in a hollow annular body made of plastic.

  The tank bottom 31 is formed in a circular container shape, and its upper end is coupled to the lower part of the peripheral wall 30 by caulking and screwing. A circular concave region in which the stirring body 6 is disposed is provided in the inner bottom portion of the tank bottom portion 31, and a pump chamber 35 is formed between the tank bottom portion 31 and the stirring body 6. A plurality of outlets 35a (only one shown) are provided on the outer periphery of the pump chamber 35 at intervals in the circumferential direction (for example, three locations). This outflow port 35a is connected to a water passage 37 provided in the vertical direction along the inner peripheral surface of the peripheral wall portion 30 of the washing tub 5, and the pump chamber 35 and the water passage 37 are connected via the outflow port 35a. Communicate.

  The stirrer 6 has a disk shape having a convex portion 6a for generating a rotating water flow on the surface (upper surface), and a plurality of water passage holes 6b are formed so as to vertically penetrate the plate surface. A plurality of pump blades 36 having a thin plate shape extending in the radial direction (radial direction) from the central portion are integrally provided on the back surface (lower surface) of the stirring body 6.

  The peripheral wall portion 30 has a plurality (for example, six) of locking portions 33 (only one shown) that locks with a partition plate 50 described later at a position close to the tank bottom portion 31 with a predetermined interval in the circumferential direction. Is provided.

  In addition, a large number of dewatering holes 34 are formed in the peripheral wall portion 30 except for the water passage 37. In the present embodiment, as shown in FIG. 1, the dewatering holes 34 are provided above and below the partition plate 50, respectively, and the opening area of the dewatering holes 34 provided per unit area of the peripheral wall portion 30 is defined as the opening ratio. Then, the aperture ratio below the partition plate 50 is set smaller than the aperture ratio above the partition plate 50. That is, the dewatering holes 34 are densely provided in the peripheral wall portion 30 of the washing tub 5 in the upper portion as compared with the lower portion of the partition plate 50.

  In the present embodiment, the case where the dewatering holes 34 are provided above and below the partition plate 50 has been described, but the dewatering holes 34 do not exist below the partition plate 50 and only above the partition plate 50. A dewatering hole 34 may be provided.

  A water passage 37 provided in the peripheral wall portion 30 of the washing tub 5 is a flow path extending upward through which washing water flowing from the pump chamber 35 through the outlet 35a circulates. A discharge port 37 a is provided slightly below the ring 32. Thus, the pump chamber 35, the pump blades 36, and the water passage 37 constitute a pumping mechanism, and the washing water in the washing tub 5 flows into the three flows of the pump chamber 35 by the rotation of the stirring body 6 in the pump chamber 35. It discharges toward the outer peripheral direction from the outlet 35a, rises in the water passage 37 (pumps), and is discharged (sprinkled) into the washing tub 5 from the discharge port 37a. The flow of water discharged (sprinkled) from the discharge port 37a into the washing tub 5 is hereinafter referred to as “shower water flow”.

  On the other hand, a top cover 14 is provided at the top of the outer box 2. Near the center of the top cover 14, a clothing entrance 15 is provided, and an outer lid 16 that opens and closes the clothing entrance 15 is provided. A water tank cover 17 is provided in the upper part of the water tank 3. The water tank cover 17 is provided with an opening 18 positioned below the clothing entrance 15 and an inner lid 19 for opening and closing the opening 18.

  The top cover 14 is provided with a water supply valve 20 as a water supply control unit and a water injection case 21 having a detergent charging unit, located behind the clothing entrance 15. The water supply valve 20 is provided with a hose connection port 22, and a connection hose connected to a faucet (not shown) of a water supply (water supply source) is connected to the hose connection port 22. A bellows-shaped water supply hose 23 is connected to the outlet of the water injection case 21. A lower end portion of the water supply hose 23 is located above the washing tub 5 and connected to a water supply port 25 formed in the water tub cover 17. Thus, when the water supply valve 20 is opened, tap water is supplied into the washing tub 5 from the water supply port 25 through the connection hose, the water supply valve 20, the water injection case 21, and the water supply hose 23. In addition, this tap water turns into washing water by mixing with a detergent in the water injection case 21.

  Further, an operation panel 26 that can be operated by a user is provided on the front side of the top cover 14, and a control device 27 is provided as a control unit including a microcomputer or the like located on the back side. Yes. As shown in FIG. 4, the operation panel 26 includes various switch input units 28 including a start switch and a course selection key, and a display unit 29 that performs necessary display. The user can instruct selection of a course for washing operation or start of operation by operating the operation panel 26 (switch input unit 28). In this embodiment, in addition to the “standard course” in which the standard washing operation is performed, a “delicate course” for washing delicate clothing is provided as the washing operation course.

  In this embodiment, the partition plate 50 used when executing the washing operation of the delicate course is detachably mounted (set) in the washing tub 5.

  The partition plate 50 is made of a synthetic resin molded body such as polypropylene (PP), for example. As shown in FIGS. 1 to 3, two plate-like members 51 are rotatably connected by a connecting shaft 52, and an upper surface thereof. A lint filter 65 is provided.

  The partition plate 50 has a substantially disk shape that fits into the inner peripheral surface of the washing tub 5 with the two plate-like members 51 open, and the two plate-like members 51 overlap in a closed state. Folds in half from the fold 58.

  The two plate-like members 51 constituting the partition plate 50 are provided with a plurality of water passage holes 53 through which washing water can be passed. In addition, a plurality of hooks 54 that are engaged with the engaging portions 33 provided on the peripheral wall portion 30 of the washing tub 5 are provided at a peripheral portion of the plate-like member 51 at predetermined intervals in the circumferential direction.

  As shown in FIG. 1, the locking portion 33 provided on the peripheral wall portion 30 of the washing tub 5 protrudes from the peripheral wall portion 30 above the lower protrusion 55 and the lower protrusion 55 protruding from the peripheral wall portion 30 of the washing tub 5. An upper protrusion 56 and a pressure receiving portion 57 sandwiched between the lower protrusion 55 and the upper protrusion 56 are provided.

  The hook 54 provided on the plate-like member 51 is made of a leaf spring having a V-shaped cross section, and is fitted into the pressure receiving portion 57 in a compressed state. In this way, the hook 54 is locked to the locking portion 33 provided in the washing tub 5, so that the partition plate 50 is located above the stirring body 6 and below the discharge port 37 a provided in the water passage 37. It is positioned and fixed in the washing tub 5 so that the upper surface is horizontal.

  In this example, the upper surface of the lower protrusion 55 supports the lower surface of the hook 54 when the laundry is placed on the partition plate 50 and the partition plate 50 receives a downward load. Further, the upper protrusion 56 protrudes from the peripheral wall portion 30 of the washing tub 5 above the hook 54, and is configured such that the partition plate 50 attached to the washing tub 5 does not float or move. .

  As shown in FIGS. 2 and 3, the plate-like member 51 is provided with an inner handle 59 at a position closer to the fold 58 than the peripheral edge of the plate-like member 51, and the plate-like member 51 is shaped like a plate. An outer handle 60 is provided at a position close to the peripheral edge of the member 51. The inner handle 59 and the outer handle 60 are formed at the center of the disc-shaped partition plate 50 (that is, at the center in the longitudinal direction of the fold 58).

  In the present embodiment, the inner handle 59 includes a through-hole that vertically penetrates a plate-like member 51 pierced to a size that allows a user's finger to be inserted, and the two plate-like members 51. 2 (the right side plate-like member in FIGS. 2 and 3) is located at the center of the disc-shaped partition plate 50 (that is, the longitudinal center of the fold 58) along the fold 58. A plurality (two) are provided. The inner peripheral wall of the through-hole constituting the inner handle 59 has a curved surface shape in which the opening of the through-hole increases toward the upper side and is smoothly connected to the upper surface of the plate-like member 51. The inner handle 59 is not limited to being provided only on one plate-like member 51 as described above, and may be provided on each of the two plate-like members 51.

  The outer handle 60 is a through-hole that vertically penetrates a plate-like member 51 that is sized so that a user's finger can be inserted, and is folded into each of the two plate-like members 51. A plurality (three) are provided along the longitudinal direction of the eyes 58. The outer handle portions 60 provided on the two plate-like members 51 are provided at positions facing each other across the central portion of the partition plate 50.

  As shown in FIGS. 2 and 3, the lint filter 65 includes a box-shaped filter body 67 having an opening 66 on one end side in the circumferential direction, a mounting portion 68 protruding from the lower surface of the filter body 67, and a filter body 67. And a check valve 69 that covers the opening 66 from the inside. The lint filter 65 is attached to the peripheral portion of the plate-like member 51 by fitting the attachment portion 68 into the outer handle 60 of the plate-like member 51 from above.

  The filter body 67 has a mesh shape in which the peripheral wall is provided with a large number of through-holes. The filter body 67 captures the yarn waste contained in the wash water taken from the opening 66 and stores the captured yarn waste inside.

  The check valve 69 is composed of two rubber plates attached to the upper and lower edges of the opening 66. The distance between the two rubber plates decreases from the opening 66 to the inside of the filter main body 67 and is in contact with the inside of the filter main body 67. As a result, the washing water containing the thread waste enters the inside of the filter body 67 through the check valve 69 from the opening 66, but the washing water inside the filter body 67 and the thread waste captured by the filter body 67. Is prevented from flowing out of the filter body 67 by the check valve 69.

  In order to mount the partition plate 50 having such a configuration in the washing tub 5, first, a user's finger is inserted into the outer handle portion 60 with the lint filter 65 removed from the plate-like member 51, and the fold 58 is formed. The partition plate 50 is held in a state of being folded into a mountain fold located above.

  In this state, the partition plate 50 is inserted into the washing tub 5, and the hook 54 provided on the partition plate 50 is mountain-folded at a position facing the pressure receiving portion 57 of the locking portion 33 provided in the washing tub 5. The partition plate 50 folded in a flat shape is opened. As a result, the hook 54 provided on the partition plate 50 is fitted into the pressure receiving portion 57 provided on the washing tub 5.

  And the partition plate 50 provided with the lint filter 65 is made into the stirring body 6 by inserting the attachment part 68 of the lint filter 65 in the outer side handle part 60, and attaching the lint filter 65 to the peripheral part of the upper surface of the plate-shaped member 51. Is mounted and fixed in the washing tub 5.

  Further, in order to remove the partition plate 50 attached to the washing tub 5, a user's finger is inserted into the inner handle 59 and the partition plate 50 is pulled upward. Then, the fold 58 moves upward with the hook 54 fitted in the pressure receiving portion 57 in a compressed state as a fulcrum, and the partition plate 50 is bent in a mountain fold shape. As a result, the hook 54 is detached from the locking portion 33, and the partition plate 50 is taken out from the washing tub 5. The taken out partition plate 50 is folded in half so that the two plate-like members 51 overlap each other, and can be finished.

  As described above, the delicate course is executed in a state where the partition plate 50 is mounted in the washing tub 5 and the clothes W are placed on the partition plate 50. In the state where the partition plate 50 is set in the washing tub 5, the water passage hole 53, the gap between the inner peripheral wall of the washing tub 5 and the outer peripheral edge of the partition plate 50, the inner handle 59, Washing water can go back and forth between the upper and lower surfaces of the partition plate 50 via the outer handle 60.

  FIG. 4 schematically shows the electrical configuration of the washing machine 1 of the present embodiment. The control device 27 that controls the entire washing machine 1 is provided in a motor 7 that is a rotational drive source of the switch input unit 28, the water level sensor 13, the washing tub 5, and the stirring body 6, and detects the rotational speed of the motor 7. A signal or the like from the rotation sensor 42 is input. The control device 27 controls the display unit 29 and the buzzer 43 based on those input signals and a previously stored control program, and controls the water supply valve 20, the drain valve 10, the motor 7 and the like via the drive circuit 44. A washing operation is performed that includes washing, rinsing and dehydration processes.

  When the delicate course is selected and instructed by the user's operation on the operation panel 26, the control device 27 places the clothes W on the partition plate 50 mounted in the washing tub 5 and performs washing. Execute. This delicate course includes a washing process and a rinsing process, and the dehydration process is performed manually by the user if necessary.

  In this delicate course washing process, the water level is set slightly above the partition plate 50, and the agitator 6 is rotated in a predetermined cycle by driving the motor 7 in a normal rotation, stop, reverse rotation, and stop. In the present embodiment, the first drive time period (see FIG. 5) in which the ON time (rotation time) within the repetitive cycle of forward rotation and reverse rotation of the stirrer 6 is longer than the standard course not using the partition plate 50 is used. In addition, both the second drive time (see FIG. 6) in which the ON time within the repetition period of the forward rotation and the reverse rotation of the stirrer 6 is shorter than the first drive time are executed. Further, the period of the second driving time period is shorter than the period of the first driving time period.

  Specifically, as shown in FIG. 5, in the first driving period of a long cycle, the stirring body 6 is normally rotated for 10 seconds, turned off for 3 seconds, turned off for 10 seconds, and turned off for 3 seconds. . The maximum rotation speed (predetermined rotation speed) is, for example, 145 rpm. At this time, acceleration from the off state to the predetermined rotation speed takes 4 seconds, and deceleration from the predetermined rotation speed to off takes 4 seconds. . That is, the acceleration and deceleration of the stirring body 6 up to a predetermined number of revolutions are controlled to be gentler than the acceleration and deceleration of the stirring body 6 in the standard course. Incidentally, although not shown in the figure, in the energization pattern of the standard course, the stirring body 6 is normally rotated for 2 seconds, turned off for 1 second, reversed for 2 seconds, turned off for 1 second, and a predetermined number of revolutions (for example, It takes 0.4 seconds to accelerate (and decelerate) up to 145 rpm).

  As shown in FIG. 6, in the second drive time period with a short cycle, the stirring body 6 is repeatedly rotated forward for 1.6 seconds, off for 2.1 seconds, reversed for 1.6 seconds, and off for 2.1 seconds (intermittently). Drive). At this time, the maximum (predetermined) rotational speed is, for example, 165 rpm, which is higher than the predetermined rotational speed (145 rpm) of the first drive time limit. Further, the acceleration and deceleration of the stirring body 6 up to a predetermined number of revolutions are more rapid than the acceleration and deceleration of the stirring body 6 in the first drive time limit. Specifically, control is performed such that acceleration from an off state to a predetermined rotational speed is performed in 0.3 seconds, and deceleration from the predetermined rotational speed to off is performed in 0.3 seconds.

  Further, in the present embodiment, the control device 27 is placed on the partition plate 50 around the vertical axis (rotation axis) of the washing tub 5 by rotating the washing tub 5 during the washing process or the rinsing process of the delicate course. A position changing operation for changing the relative position between the clothing W and the discharge port 37 a provided in the water passage 37 is executed once or a plurality of times.

  Next, the operation when the delicate course is executed in the washing machine 1 configured as described above will be described with reference to FIGS. For example, when the user wants to wash delicate clothes W such as a wool sweater or silk product, a partition plate 50 is mounted (set) in the washing tub 5 as shown in FIG. W is placed.

  Then, after a necessary amount of detergent is introduced into the detergent introduction part, the operation panel 26 (switch input part 28) is operated to select a delicate course, and the washing operation is started. The flowchart in FIG. 10 schematically shows a procedure of processing executed by the control device 27 and the like in the delicate course.

  That is, first, the washing machine 1 is turned on (step S1), then the partition plate 50 is set (step S2), and the garment W is placed on the partition plate 50 (step S3). The power of the washing machine 1 may be turned on after the partition plate 50 and the clothing W are set. Thereafter, when the detergent is put in (step S4) and the start switch is turned on (step S5), the washing operation is started. When the washing operation is started, in step S6, the water supply valve 20 is first opened, and the washing water containing the detergent is supplied into the washing tub 5 (water tub 3). This water supply is executed until the water level in the washing tub 5 reaches a predetermined water level slightly lower than that of the partition plate 50 (step S7). When the water level reaches the predetermined water level (Yes in step S7), the water supply valve 20 is temporarily turned on. Stopped (step S8).

  In the next step S9, the stirrer 6 is intermittently driven to rotate forward and reverse intermittently at a high speed and a short cycle of the second drive time period. At this time, the water level in the washing tub 5 is relatively low and does not reach the partition plate 50, but the washing water is vigorously stirred by the high-speed and short-cycle rotation of the stirrer 6 so that the detergent can be dissolved well. The detergent can be dissolved quickly and foamed quickly. And by the effect | action of the pump blade | wing 36 of the stirring body 6, wash water goes up the water flow path 37 (pumping), and a shower water flow can be discharged in the washing tub 5 from the discharge outlet 37a. In this case, since the acceleration and deceleration up to the predetermined number of rotations of the stirring body 6 are controlled to be relatively abrupt in the second drive time period, the shower water flow can be ejected vigorously even with a small amount of water. A wide range of shower water can be applied to W.

  At this time, since washing water (concentrated liquid) with a high detergent concentration is applied to the clothes W as a shower water flow, the cleaning effect can be enhanced. In addition, when the clothing W is a wool material or the like having a relatively high water repellency, there is a possibility that the clothing W may float on the partition plate 50 and the washing water may not easily permeate. Since the partition plate 50 has not been reached, the shower water flows into the clothing W on the partition plate 50 before the clothing W arranged and placed on the partition plate 50 rises, moves and folds. Accordingly, the washing water can be infiltrated into the garment W before full-scale washing starts, and it is possible to suppress the occurrence of shape loss and uneven washing due to the garment W rising.

  When forward / reverse rotation driving of the agitator 6 in the second drive time period in step S9 is executed for a predetermined time (for example, several tens of seconds), the water supply valve 20 is opened in the next step S10, and water supply is resumed. Is done. When the water level in the washing tub 5 reaches a set water level (a water level higher than that of the partition plate 50) (Yes in Step S11), the water supply valve 20 is closed (Step S12). In step S13, the stirrer 6 is driven to rotate in the forward and reverse directions at a high speed and a long period of the first drive time, and the washing operation is executed.

  As shown in FIG. 8, by driving the stirring body 6, the water flow generated by the convex portion 6 a of the stirring body 6 passes through the water passage hole 53 on the outer peripheral side of the partition plate 50 as indicated by an arrow A. Ascending, a rotating water flow is generated in the outer peripheral portion on the upper surface side of the partition plate 50.

  In addition to this rotating water flow, as shown in FIG. 8, the washing water pumped up from the pump chamber 35 through the water passage 37 is poured from the discharge port 37a toward the clothing W, and is washed like a press wash. Is done. At this time, in the first drive time period, the ON time within the repeating cycle of forward rotation and inversion of the stirrer 6 is configured to be long, so even when the washing water in the washing tub 5 is relatively small, A sufficient rotating water flow can be generated at the top, and a shower water flow from above can be sufficiently applied. Thus, a sufficient cleaning effect can be obtained while obtaining a water saving effect.

  In addition, since the acceleration and deceleration of the agitator 6 up to a predetermined number of rotations become gentle in the first drive time period, the shower water flow can be applied evenly to the clothes W on the partition plate 50. That is, depending on the rotational speed of the pump blade 36, the shower water flow jumps (momentum, that is, the flying distance). For example, at the initial stage of acceleration in the first drive time period, for example, 100 to 120 rpm, the shower water flow is as shown in (1) in FIG. 7, and for example, at 120 to 140 rpm, the shower water flow is (2 ), And at 145 rpm, the shower water flow is as shown in (3) in FIG. Thereby, the washing unevenness can be prevented and the washing effect of the garment W can be enhanced.

  Then, when the washing operation for rotating the stirring member 6 forward and backward in the first drive time period is performed for a predetermined time in Step S13 (Yes in Step S14), the washing operation is interrupted and the position changing operation is performed (Step S15). .

  In the position changing operation, the control device 27 switches the clutch provided in the mechanism unit 8 to connect the output shaft 7a of the motor 7 to the washing tub 5 and the stirring body 6, and then rotationally drives the motor 7 to wash the washing tub 5. Is rotated at a low speed integrally with the stirring body 6 for a predetermined time (for example, 3 seconds). Note that the rotation speed during the position changing operation is preferably 50 rpm or less, and more preferably 20 rpm or less.

  In this position changing operation, the water level in the washing tub 5 is higher than that of the partition plate 50, and the clothes W are subjected to buoyancy. For example, the washing tub 5 is adjusted from the state shown in FIG. If it is rotated at a low speed in the reverse direction (direction indicated by arrow B in FIG. 9), the clothes W do not follow the rotation of the washing tub 5, and as a result, as shown in FIG. The position of the discharge port 37 a of the provided water passage 37 is shifted in the direction of the rotation axis of the washing tub 5 with respect to the clothes W placed on the partition plate 50.

  When the position change operation is performed after the washing operation is interrupted, if the clutch of the mechanism unit 8 is not switched due to a malfunction of the mechanism unit 8 or the like, the control device 27 may reach a predetermined number of times (for example, three times). The clutch is repeatedly switched. When the clutch is successfully switched, the position changing operation is performed. On the other hand, if the clutch is not switched even after repeatedly switching the clutch a predetermined number of times, the control device 27 may continue the washing operation without performing the position changing operation. When the clutch is not switched continuously for a predetermined number of times as described above, the control device 27 may display on the display unit 29 that the clutch of the mechanism unit 8 cannot be switched and notify the user of the abnormality.

  When the position changing operation is completed, it is determined in step S16 whether or not the washing time has ended. If the washing time remains, the process returns to step S13 and the position changing operation is performed every time the washing operation is performed for a predetermined time (step When the washing time is finished (Yes in step S16), the washing operation is finished (step S17).

  In this embodiment, the garment W can be washed without directly touching the stirrer 6, and the garment W can be washed gently while suppressing damage to the garment W. In addition, when the washing operation is executed for a predetermined time, the position change operation for changing the relative position of the clothes W placed on the partition plate 50 with respect to the discharge port 37a from which the shower water flow is discharged is executed. The position where the shower water flow is applied to the garment W placed thereon is changed, and the washing effect of the garment W can be enhanced by preventing washing unevenness while washing the garment W gently.

  In the present embodiment, since the lint filter 65 is provided on the upper surface of the plate-like member 51 that constitutes the partition plate 50 on which the clothing W is placed, laundry that is likely to generate lint such as wool sata is washed. Even when doing so, yarn waste can be captured efficiently.

  Further, in this embodiment, a large amount of yarn waste floats in the vicinity of the peripheral wall portion 30 of the washing tub 5 due to the water flow generated by the rotation of the stirrer 6, but the lint filter 65 is provided on the peripheral portion of the partition plate 50. The lint can be captured efficiently.

  Furthermore, in this embodiment, the opening rate of the dewatering hole 34 provided in the peripheral wall portion 30 of the washing tub 5 below the partition plate 50 is the dehydration provided in the peripheral wall portion 30 of the washing tub 5 above the partition plate 50. Since the opening ratio is set to be smaller than the opening ratio of the hole 34, the yarn waste hardly flows out to the outside of the washing tub 5 (between the washing tub 5 and the water tub 3) through the dewatering hole 34 due to the water flow generated by the rotation of the stirring body 6. Therefore, the yarn waste can be captured more efficiently.

  In addition, in this embodiment mentioned above, although the case where the stirring body 6 was reversed forward / reversely during the washing operation of a delicate course was demonstrated, you may rotate the stirring body 6 only to one direction of forward / reverse rotation, In this case By arranging the opening 66 of the lint filter 65 on the upstream side of the water flow generated in the washing tub 5, the lint captured by the filter body 67 is collected by the filter body 67 without providing a check valve in the lint filter 65. Can be prevented from flowing out to the outside.

  Further, in the above-described embodiment, the case where the lint filter 65 is provided on the upper surface of the partition plate 50 has been described. However, the present invention is not limited thereto, and may be in the vicinity of the partition plate 50. A lint filter may be provided on the lower surface of the partition plate 50, or a lint filter 70 made of a net-like bag may be attached to the peripheral wall 30 of the washing tub 5 as illustrated in FIG.

(Second Embodiment)
Next, a second embodiment will be described with reference to FIG. In the present embodiment, the same parts as those in the first embodiment described above are denoted by the same reference numerals, new illustrations and detailed descriptions are omitted, and differences from the first embodiment will be described.

  As shown in FIG. 12, the washing machine 1 of the present embodiment is provided with a circulation path 81 from the bottom to the top of the water tank 3. One end of the circulation path 81 forms a suction port 81 a connected to the bottom of the water tub 3, and the other end discharges through the top of the water tub 3 to the upper surface opening of the washing tub 5 from above. 81b. That is, the circulation path 81 is configured to discharge the washing water supplied into the washing tub 5 to the outside of the washing tub 5 and then return the washing water to the washing tub 5 again. However, the position of the discharge port 81b of the circulation path 81 does not change.

  The circulation path 81 is provided with a circulation pump 80 that is positioned on the suction port 81 a side and circulates the washing water in the washing tub 5 to the circulation path 81. The circulation pump 80 constitutes a pumping mechanism together with the circulation path 81, and is driven and controlled by the control device 27. The circulation pump 80 takes the washing water in the washing tub 5 from the suction port 81a into the circulation path 81, and enters the washing tub 5 from the discharge port 81b. Shower water flow is discharged.

  In the washing machine 1 according to the second embodiment, the position changing operation is executed once or a plurality of times during the washing process and the over-traveling process of the delicate course.

  In the position changing operation, the control device 27 switches the clutch provided in the mechanism unit 8 to connect the output shaft 7a of the motor 7 to the washing tub 5 and the stirring body 6, and then rotationally drives the motor 7 to wash the washing tub 5. Is rotated integrally with the agitator 6 for a predetermined time, and the relative position between the clothes W placed on the partition plate 50 around the vertical axis (rotational axis) of the washing tub 5 and the discharge port 81b of the circulation path 81 is determined. change.

  For example, when the garment W placed on the partition plate 50 is set to a water level such that a part of the garment W is immersed in the washing water and the garment W is not completely separated from the partition plate 50 (that is, the garment W is separated from the partition plate 50). When the washing tub 5 is rotated in a forward and reverse direction at a predetermined rotation speed (for example, 30 rpm) together with the agitator 6, it is placed on the partition plate 50 together with the partition plate 50 attached to the washing tub 5. The placed clothing W also rotates. Since the position of the discharge port 81b of the circulation path 81 is not changed even when the washing tub 5 is rotated, the position of the discharge port 81b of the circulation path 81 is relative to the clothes W placed on the partition plate 50. Will be displaced in the direction of the rotation axis.

  Further, when the garment W placed on the partition plate 50 receives buoyancy and is completely separated from the partition plate 50, the stirrer at a higher speed (for example, 80 rpm) than when the garment W is placed on the partition plate 50. The clothes W are rotated by the strong water flow generated in the washing tub 5 by rotating the 6 and the washing tub 5 in one direction. As a result, the position of the discharge port 81 b of the circulation path 81 is shifted in the direction of the rotation axis of the washing tub 5 with respect to the clothes W placed on the partition plate 50.

  In this embodiment, after the detergent is introduced, the water supply is stopped until the water level in the washing tub 5 reaches a predetermined water level lower than that of the partition plate 50. When the water supply is stopped, the circulation pump 80 is driven to discharge the water. A shower water flow may be discharged into the washing tub 5 from the outlet 81b. Thereby, since the washing water with a high detergent density | concentration is poured on the clothing W as a shower water flow, the washing | cleaning effect can be improved.

  As described above, even in the present embodiment configured such that the washing water in the washing tub 5 is discharged to the outside of the washing tub 5 using the circulation pump 80 and the circulation path 81, and then returned to the washing tub 5 again. The position where the shower water flow strikes the clothes W placed on the board 50 can be changed, and while washing the clothes W gently, washing unevenness can be prevented and the washing effect of the clothes W can be enhanced.

  As mentioned above, although embodiment of this invention was described, these embodiment was shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

DESCRIPTION OF SYMBOLS 1 ... Washing machine, 2 ... Outer box, 3 ... Water tank, 4 ... Elastic suspension mechanism, 5 ... Washing tank, 6 ... Stirring body, 6a ... Convex part, 6b ... Water passage hole, 7 ... Motor, 7a ... Output shaft , 8 ... Mechanism part, 9 ... Drain port, 10 ... Drain valve, 11 ... Drain hose, 12 ... Air trap, 13 ... Water level sensor, 20 ... Water supply valve, 26 ... Operation panel, 27 ... Control device, 28 ... Switch input , 29 ... display part, 30 ... peripheral wall part, 31 ... tank bottom part, 32 ... balance ring, 33 ... locking part, 34 ... dehydration hole, 35 ... pump chamber, 35a ... outlet, 36 ... pump blade, 37 ... Water passage, 37a ... discharge port, 42 ... rotation sensor, 43 ... buzzer, 44 ... drive circuit, 50 ... partition plate, 65 ... lint filter, 70 ... lint filter, 80 ... circulation pump, 81 ... circulation path, 81a ... suction Mouth, 81b ... discharge port

Claims (6)

A vertical-type washing tub, an agitator provided on the inner bottom surface of the washing tub, a pumping mechanism for pumping up washing water in the washing tub upward and sprinkling water into the washing tub from a discharge port, and A control unit for controlling the rotation of the stirring body, and a partition plate that is detachably mounted on the laundry tub above the stirring body and below the discharge port and partitions the laundry tub up and down,
The pumping mechanism includes a pump blade provided on a lower surface of the agitator, a pump chamber formed between the pump blade and an inner bottom surface of the washing tub, and a lower portion extending in a vertical direction on a peripheral wall of the washing tub. Has a water passage that communicates with the pump chamber and is provided with a discharge port at an upper portion thereof, and the pump blades send washing water from the pump chamber to the water passage by the rotation of the agitator and spray water from the discharge port. And
In the operation of washing the clothes placed on the partition plate mounted and fixed in the washing tub, the control unit,
A first operation of rotating the agitator and sprinkling water from the discharge port to the clothes placed on the partition plate to wash the clothes;
After the first operation, in a state where the water level in the washing tub is higher than the partition plate and the clothes placed on the partition plate are receiving buoyancy, without sprinkling water from the discharge port to the clothes, wherein the washing tub is rotated together with the partition plate, a washing machine to perform a second operation of changing the relative position between the garment and the discharge port around the longitudinal axis of the washing tub. The washing machine according to claim 1, wherein the number of rotations of the washing tub during the second operation is 50 rpm or less. A water supply control unit for controlling water supply in the washing tub;
3. The washing machine according to claim 1, wherein, in the first operation , the water supply control unit supplies water upward from the partition plate. The washing machine according to any one of claims 1 to 3 , further comprising a lint filter that captures lint in the washing water in the vicinity of the partition plate. The washing machine according to claim 4 , wherein the lint filter is provided at a peripheral edge of the partition plate. The washing tub has a plurality of dewatering holes in the peripheral wall portion,
The washing machine according to claim 4 or 5 , wherein an opening area of the dewatering hole provided per unit area of the peripheral wall portion is larger above the partition plate than below the partition plate.

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