JP6063353B2 - Washing machine - Google Patents

Description

  The present invention relates to a washing machine in which a baffle is provided on an inner peripheral wall surface of a rotating drum that rotates inside a water tank.

  In recent years, drum-type washing and drying machines have been widely used. A drum-type washing and drying machine supports a cylindrical water tank with a bottom in an outer casing in a horizontal position with an opening on one side or a diagonal horizontal position with a diagonally upward direction. A cylindrical drum with a bottom is accommodated so as to be rotatable on the same axis.

  The rotating drum has an input port that opens on the same side as the opening of the water tank, and is driven to rotate by a drum motor fixed to the outer bottom surface of the water tank. The laundry is put into the rotating drum through the charging port, and is immersed in the washing water accumulated in the bottom of the water tank and the rotating drum. Inside the rotating drum, one or a plurality of baffles are provided so as to protrude from the inner peripheral wall surface. When the rotating drum rotates, the laundry in the rotating drum is lifted by the action of the baffle and falls from an appropriate height. Such rotating and rotating drums are repeatedly lifted and dropped, and when the laundry is dropped, the laundry is struck against the peripheral surface of the rotating drum, so-called tapping is performed.

  In the drum-type washing and drying machine, various devices have been devised in the shape of the baffle so that the laundry can be lifted well. For example, Patent Document 1 proposes a washing machine in which the cross section of the baffle is stepped in order to reduce the volume of the baffle without weakening the rotational transmission force of the rotary drum to the laundry. In Patent Document 2, the first side surface of the rotating drum on the first rotation direction side is formed as a concave surface, and the second side surface of the rotating drum on the second rotation direction side is formed as a convex surface. Has been proposed.

JP 2007-267784 A JP 2009-45379 A

  In the washing machines disclosed in Patent Documents 1 and 2, it is possible to lift the laundry well. However, it is not possible to change the laundry in the axial direction of the rotating drum only by monotonous washing that repeats lifting and dropping of the laundry. In addition, in a rotating drum supported in an oblique lateral posture, the laundry tends to accumulate on the bottom surface side of the rotating drum. In such a situation, the position of the laundry in the rotating drum is biased and the cleaning effect varies. Therefore, there is a problem that there is a limit in improving the cleaning performance.

  The present invention has been made in view of such circumstances. The object is to provide a washing machine that can eliminate the unevenness of the laundry and improve the washing performance.

  An object of the present invention is to provide a washing machine in which the laundry in the rotary drum is satisfactorily replaced in the axial direction of the rotary drum.

  A washing machine according to the present invention includes a water tub, a rotating drum rotatably accommodated in the water tub, and a baffle that protrudes from an inner peripheral surface of the rotating drum and is long in the axial direction. The baffle has a plurality of convex portions (second convex portions) arranged in parallel in the axial direction on at least one side surface of both side surfaces. This convex part is formed in the shape which moves the laundry to the opening part side for taking in / out the laundry in the axial direction of a rotating drum, for example. Also, a plurality of second convex portions are provided on the other side surface of the baffle. This 2nd convex part is formed in the shape which moves the laundry to the bottom part side of a rotating drum contrary to the said convex part.

  In the washing machine of the present invention, the convex portion provided on the one side surface further includes a first cutout portion for moving the laundry accommodated by one rotation of the rotating drum to the opening side, and the other side. A second notch is formed on the second convex portion provided on the side surface of the second notch for moving the laundry accommodated by the other rotation of the rotating drum to the side opposite to the opening.

  According to the present invention, in the plurality of convex portions provided in the baffle, the laundry accommodated in the rotating drum in each rotational direction of the rotating drum is moved to the opening side for putting the laundry into the opening side. Alternatively, it is moved in the direction opposite to the opening. When the laundry is moved, the laundry is replaced. Moreover, whenever the rotation direction changes, the movement direction of the laundry changes, so that the laundry also collides. Thereby, the washing | cleaning performance by fir washing or rubbing washing can be improved.

  A different number of convex portions can be provided on each of the side surfaces of the baffle according to the present invention.

  According to the present invention, by changing the number of convex portions provided on each of the two side surfaces of the baffle, the moving direction of the laundry and the washing water is changed and moved in each of the rotating directions of the rotating drum. The amount can also be varied. Therefore, by appropriately switching the rotation direction of the rotating drum, the moving direction of the laundry and the washing water can be appropriately switched and the laundry can be efficiently stirred, so that the washing performance can be improved.

  In the washing machine provided with the baffle of the present invention, when the rotation of the rotary drum is controlled in one direction and the other direction, the number of rotations is controlled. In other words, the laundry is lifted by rotating the rotating drum, and the rotation is controlled at the number of rotations at which the laundry drops at a rotational position of less than 90 degrees of the rotating drum and at the number of rotations that falls below 180 degrees.

  As a result, due to the synergistic effect of the state where the laundry falls and the direction of movement by the baffle, the position and amount of fall differ, the change in the movement of the laundry, the washing action due to the mutation always changes, and the laundry is stirred. More effective, and further improvement in cleaning performance can be expected.

  In the present invention, the laundry can be moved not only in washing by lifting and dropping the laundry by rotating the rotating drum, but also in the axial direction of the rotating drum. At this time, if the rotation direction is reversed, the movement direction is reversed. Therefore, the laundry in the rotating drum is moved and replaced not only in the vertical direction but also in the axial direction (substantially horizontal direction) of the rotating drum, so that the position of the laundry in the rotating drum is not easily biased, and the washing performance is improved. be able to. In addition, it can be expected to improve the washing performance by washing or rubbing due to collision between laundry.

The perspective view from the upper part which shows the external appearance of the washing machine which concerns on embodiment schematically. The longitudinal cross-sectional view which shows schematically the internal structure of the washing machine which concerns on embodiment. The top view for demonstrating the path | route of the circulation air path seen from the rear side of the water tank. The schematic diagram which shows the aspect which provided the baffle of the inner peripheral wall surface of a rotating drum. The perspective view which shows one form of the convex part provided in one side surface of a baffle. The perspective view which shows one form of the convex part provided in the other side surface of a baffle. It is a figure which shows an example of the bottom face cover for making it the uneven | corrugated shape provided in the bottom face of a rotating drum, (a) is a top view, (b) is a side view. The block diagram which shows the control circuit structure of the washing machine of this invention. The control flowchart which shows an example of rotation control of the rotating drum of this invention. The timing chart concerning rotation control of the rotating drum of this invention. The schematic diagram for demonstrating the form in which the laundry falls in the rotation angle (rotation position) of the rotating drum of this invention. The schematic diagram for demonstrating the state of the laundry by rotation of the rotating drum of this invention. The other timing chart concerning rotation control of the rotating drum of this invention.

  Below, the washing machine which concerns on this invention is explained in full detail based on drawing which shows the washing-drying machine which is the embodiment. FIG. 1 is a perspective view schematically showing an external appearance of a washing / drying machine according to the embodiment, and FIG. 2 is a longitudinal sectional view schematically showing an internal configuration of the washing / drying machine according to the embodiment. FIG. 2 shows the left side as a front part (front surface) and the right side as a rear part (back surface).

  As shown in FIG. 2, the washing and drying machine of the present embodiment includes a water tank 2 and a rotating drum 3 inside an outer casing 1 that constitutes an exterior. The water tank 2 is a large-diameter bottomed cylindrical body having an opening 20 on one side of the front surface, and a plurality of support legs 21 (only one is shown) erected on the bottom surface of the outer casing 1. It is elastically supported while maintaining an inclined posture with the side facing upward and tilting the axis with respect to the horizontal plane.

  On the front surface of the outer casing 1, a laundry inlet 11 is opened at a position facing the opening 20 of the water tub 2 so as to be freely opened and closed by a lid 10, and between the inlet 11 and the opening 20 of the water tub 2. Is sealed in a liquid-tight manner by a bellows 12.

  A rotating drum 3 is accommodated in the water tank 2. The rotating drum 3 is a bottomed cylindrical body having a slightly smaller diameter than the water tank 2, and the drum motor 4 fixed to the center of the bottom of the water tank 2 with the opening 30 on one side facing the inside of the opening 20 of the water tank 2. It is connected to the end of the output shaft (rotating shaft) 40. Thus, the rotating drum 3 is configured to rotate coaxially with the water tank 2 inside the water tank 2 by driving the drum motor 4.

  The rotary drum 3 includes a fluid balancer 31 provided around the opening 30. The fluid balancer 31 acts to absorb and mitigate vibrations associated with the rotation of the rotating drum 3. The drum motor 4 is configured inside a motor chamber 41 connected to the outside of the bottom plate of the water tank 2. The output shaft 40 of the drum motor 4 penetrates the bottom plate of the water tank 2 in a liquid-tight manner and protrudes to the center of the bottom plate, and the rotary drum 3 is connected to the protruding end.

  As shown in FIG. 2, a large number of small holes 32 are formed through the entire surface of the peripheral wall of the rotary drum 3, and a baffle 33 extending in the rotational axis direction is formed on the inner surface of the rotary drum 3 in the circumferential direction. Three (see FIG. 4) are provided with equal distribution. In FIG. 2, only a part of the small hole 32 and one baffle 33 are shown in order to avoid complication of the drawing.

  As shown in FIG. 1, a door opening button 13 is provided in the vicinity of the lid 10 on the front surface of the outer casing 1. The lid body 10 is provided with a pressing portion 14 for performing a pressing operation when the lid body 10 is closed. The lid 10 is opened by the operation of the door opening button 13, is closed by gripping the peripheral edge portion, and is operated by pushing the pressing portion 14 from the outside. The inlet 11 provided on the front surface of the outer casing 1 faces the openings 20 and 30 of the water tank 2 and the rotating drum 3.

  In this embodiment, the lid body 10 is an exterior plate 10a that forms a circular exterior body, a lid that is integrally attached to the exterior plate 10a and that protrudes so as to protrude into the rotary drum 3. It consists of a main body 10b. A large number of protrusions 10c are provided on the surface of the lid main body 10b facing the rotary drum 3 so as to have an uneven shape. The protrusions 10c protrude in a hook shape, and an example of the arrangement is as described in the specification filed by the present applicant in Japanese Patent Application No. 2012-177826.

  In the washing operation of the washing and drying machine configured as described above, the lid body 10 is opened, the laundry is put into the rotary drum 3 through the openings 20 and 30 located inside the insertion slot 11, and the lid body 10 is removed. After the closing, as will be described later, washing water is supplied into the water tank 2 and the drum motor 4 is driven to rotate the rotating drum 3. As described above, a large number of small holes 32 are formed through the peripheral wall of the rotating drum 3, and a plurality of baffles 33 project from the inner surface of the rotating drum 3. Therefore, the laundry inside the rotary drum 3 is immersed in the wash water flowing into the rotary drum 3 through the small holes 32, and is repeatedly stirred up with the wash water by being lifted and dropped by the action of the baffle 33, Further, it is struck against the inner surface of the rotating drum 3 and washed when dropped.

  As shown in FIG. 1, an operation panel 15 including an operation unit for various operations and a display unit for various displays is provided on the front upper portion of the outer casing 1. The operation panel 15 is connected to an operation control unit 16 (see FIG. 2) provided inside the outer casing 1 so as to be located inside the operation panel 15. The washing operation as described above, the drying operation described later, and the dehydration operation performed between them are performed by a series of processes or individually by the operation of the operation control unit 16 according to the operation of the operation panel 15. It is executed as a process.

  As shown in FIG. 1, a water supply port 17 serving as a connection end to a water supply source such as a water supply is provided on the upper surface of the rear portion of the outer casing 1. As shown in FIG. 2, the water supply port 17 is connected to a water supply valve 18 provided inside the outer casing 1. The water supply valve 18 is a multiple solenoid valve having a plurality of water supply outlets.

  The first water supply outlet of the water supply valve 18 is connected to the upper peripheral surface of the water tank 2 through the water supply pipe 19, and when the water supply valve 18 is switched to the first water supply outlet, the water supply to the water supply port 17 is The water is fed into the water tank 2 through the water supply valve 18 and the water supply pipe 19 and used as washing water in the above-described washing operation. A detergent case may be arranged in the middle of the water supply pipe 19 so that an appropriate amount of detergent is introduced together with the water supply.

  In addition, a water conduit 22 is connected to the peripheral surface of the bottom of the water tank 2 in the vicinity of the bottom plate. The water conduit 22 is connected to a cylindrical filter case 23 fixedly supported at the front lower part inside the outer casing 1. Inside the filter case 23 is housed a lint filter 24 that captures foreign matters such as fiber scraps. A lower portion of the filter case 23 is connected to a drain pipe 26 laid along the bottom surface of the outer casing 1 through a drain valve 25. A circulation pump 27 is attached to the rear end of the filter case 23, and the discharge side of the circulation pump 27 communicates with the upper front side of the water tank 2 through a return pipe 28.

  The washing water supplied into the water tank 2 is introduced into the filter case 23 through the water conduit 22 and fills the inside of the filter case 23. The washing water inside the filter case 23 is sucked into the circulation pump 27 by being driven by the circulation pump 27 and pressurized, sent to the upper part of the water tank 2 through the return pipe 28, and the tip of the return pipe 28. Then, it spreads like a shower and is supplied into the rotary drum 3. The circulation pump 27 is driven continuously or intermittently during the aforementioned washing operation. The washing water supplied into the rotating drum 3 by this driving is poured onto the laundry in the rotating drum 3, and the washing effect can be enhanced. The lint filter 24 provided in the filter case 23 functions to capture and remove foreign matters such as fiber waste contained in the circulating washing water.

  The drain valve 25 provided in the lower part of the filter case 23 is opened after the washing operation. By this opening, the washing water inside the water tank 2 is drained to the drain pipe 26 through the water conduit 22 and the filter case 23. In this drainage, the foreign matter contained in the wash water is captured and removed by the lint filter 24 in the filter case 23 and is not likely to be discharged to the sewer pipe through the drain pipe 26.

  The drying operation of the washing / drying machine is performed through the dehydration operation after the above washing operation. In this drying operation, the rotating drum 3 is rotated by driving the drum motor 4, and drying air is circulated inside the rotating drum 3.

  In FIG. 2, a circulation air path for dry air is schematically shown. The circulation air passage 5 includes a lead-out port 50 opened on the bottom bottom surface of the aquarium 2 and an introduction port 51 established in the peripheral portion of the opening 20 at the front of the water tank 2 by an ascending duct 52 and an upstream duct 53. Configured to contact.

  FIG. 3 is a plan view of the circulation air passage 5 as seen from the rear side of the water tank 2. The ascending duct 52 is provided at a position biased to one side from the center of the water tank 2 in which the drum motor 4 is provided. A lower end portion of the ascending duct 52 is bent laterally in the vicinity of the lower position of the water tank 2, and is connected to a cover tube 54 covering the outlet 50 through a bellows tube 55. The bellows tube 55 is provided to absorb vibration of the elastically supported water tank 2 and prevent propagation to the ascending duct 52 fixedly supported.

  The upper end portion of the ascending duct 52 is connected to the rear end portion of the preceding duct 53. As shown in FIG. 2, the upstream duct 53 is disposed in the internal space of the outer casing 1 above the water tank 2. The front end portion of the front duct 53 is connected to an introduction port 51 that opens to the periphery of the front upper portion of the water tank 2. Further, a lint filter 56 for capturing dust, a blower fan 57 for raising dry air, and a PTC (Positive Temperature Coefficient) heater 58 (or a sheathed heater) for heating the dry air are provided in the middle of the upstream duct 53. It is inserted in this order from the rear side to the front side.

  The second water supply outlet of the water supply valve 18 is connected to the ascending duct 52 via the cooling water pipe 59. When the water supply valve 18 is switched to the second water supply outlet, the water supply to the water supply port 17 is sent into the ascending duct 52 through the cooling water pipe 59.

  As shown in FIG. 2, the cooling water pipe 59 extends downward along the ascending duct 52 from the position of the water supply valve 18, and the lower end of the cooling water pipe 59 is connected to the ascending duct 52 as shown in FIG. Connected to the bottom. This connection position is set on the bent portion provided as described above, and is deviated inside the bent circle.

  The dry air generated by the blower fan 57 circulates in the circulation air passage 5 configured as described above, and this dry air is heated by the PTC heater 58 and reaches the inlet 51 through the upstream duct 53. The air is blown into the rotary drum 3 from the introduction port 51. At this time, the laundry inside the rotary drum 3 is lifted by the action of the baffle 33 on the peripheral surface as the rotary drum 3 rotates, spreads and falls, and is dried by repeatedly contacting the drying air during this time. It is done.

  The drying air introduced into the rotating drum 3 takes moisture from the laundry and becomes moist air, which is led out to the outlet 50 and enters the ascending duct 52 through the cover tube 54 and the bellows tube 55. The dry air rises in the ascending duct 52 and moves into the preceding duct 53, passes through the lint filter 56, captures dust, is reheated by the PTC heater 58, and is introduced into the rotary drum 3. .

  The water supplied to the cooling water pipe 59 is used as cooling water for cooling the drying air led out to the outlet 50 and condensing and removing moisture taken from the laundry.

  The cooling water supplied from the cooling water pipe 59 accumulates on the bottom surface of the ascending duct 52 and comes into contact with the drying air led out to the outlet 50. By this contact, the dry air is cooled and dehumidified by heat exchange with the cooling water to become dry air, which is introduced into the ascending duct 52 and rises inside the ascending duct 52. Accordingly, dry air that does not contain moisture and water droplets is introduced into the upstream duct 53 that is continuous with the upper end of the upstream duct 52, and the occurrence of clogging of the lint filter 56 due to adhesion of water droplets can be effectively suppressed.

  During the drying operation performed as described above, the drain valve 25 is opened, and the cooling water supplied into the ascending duct 52 flows into the water tank 2 through the bellows tube 55 and the cover tube 54, and the water guide tube. The water is drained to the drain pipe 26 through the filter case 23 and the filter case 23.

  The dehydrating operation of the washing / drying machine is performed by rotating the rotating drum 3 at a high speed by driving the drum motor 4 after the drain valve 25 is opened and the washing water in the water tank 2 is drained. The laundry in the rotating drum 3 rotates by being pressed against the inner surface of the rotating drum 3 by the action of centrifugal force accompanying high-speed rotation, and the water contained in the laundry is a small hole 32 provided in the peripheral wall of the rotating drum 3. The water then flows out into the water tank 2 and is drained to the drain pipe 26 through the water conduit 22 and the filter case 23.

  Although explained later, the bottom surface (bottom portion) of the rotary drum 3 of the present invention is provided with a bottom surface cover 38 whose plane is formed in an uneven shape as shown in FIG. The bottom cover 38 is formed in a bowl shape so that the center part protrudes. That is, in the side view of FIG. 7B, the left protruding surface side is provided so as to face the opening side of the rotating drum 3. The bottom cover 38 has a screw hole 38a that is screwed to the rotating shaft 40 of the motor 4 at the center, and screw holes 38b that are screwed to the bottom of the rotary drum 3 at three locations on the outer peripheral edge. Yes. Further, the bottom cover 38 is provided with a raised portion (convex portion) 38c that is further raised from the bowl-shaped surface. The raised portion 38c is formed so as to be inclined with respect to the radial direction from the substantially central portion of the radius to the outer periphery. This inclination is formed in a curved shape. Even if it does not form in a curved shape, you may incline and form in a linear shape.

  According to the bottom cover 38, a large number of openings 38d are formed in the central portion. The opening 38d is formed so that dry air can pass through, and is provided in a form in which dry dry air heated from the bottom surface side of the rotary drum 3 is blown out. Therefore, in the drying configuration shown in FIG. 3, the bottom cover 38 is formed with a raised portion 38 c and no opening 38 d is provided.

  In the above description, the bottom cover 38 described above is fixed to the bottom surface of the rotating drum 3 with screws. However, a raised portion (convex portion) may be directly formed on the bottom surface of the rotating drum 3. This raised portion is not limited to the shape shown in FIG. 7, and a plurality of protruding portions may be provided in a radial state from the center of rotation.

  Although the five protruding portions 38c shown in FIG. 7 are illustrated and described in the form of being provided at equal intervals, the number is not limited to these, and one or more protruding portions may be provided.

(Baffle configuration)
Next, the shape of the baffle 33 will be described. A feature of the present invention resides in the baffle 33. FIG. 4 is a schematic view showing an aspect of the inner peripheral wall surface of the rotating drum 3, and FIGS. 5 and 6 are perspective views of the baffle 33. FIG. 5 is a perspective view showing one side surface of the baffle 33, and FIG. 6 is a perspective view showing the other side surface of the baffle 33. FIG. 4 schematically shows an arrangement state when the baffle arranged on the inner wall surface of the rotating drum 3 is viewed from the opening 30 side.

  As shown in FIG. 4, three baffles 33 that are long in the axial direction of the rotating drum 3 are provided on the inner peripheral surface of the rotating drum 3 at equal intervals in the circumferential direction. These baffles 33 are provided at equal intervals of 120 degrees with respect to the axial center of the rotating drum 3. The number of baffles 33 is not limited to three, but may be one, two, or four or more.

  The baffle 33 has a mountain-like substantially trapezoidal axial cross section, and convex portions 34 and 36 described below are provided on two inclined side surfaces 33a and 33b. First, in FIG. 5, a plurality of convex portions 34 are provided on one side surface (the right side surface in the lower part of FIG. 4) 33a. As shown in FIG. 5, each convex portion 34 has a notch portion 35 that protrudes in a bowl shape from the side surface 33 a and is cut out at the upper portion to form a crescent-shaped surface shape. The convex portions 34 are arranged at equal intervals in the longitudinal direction of the baffle 33 (the axial length direction of the rotating drum 3). Since the baffle 33 is in contact with the laundry in the rotary drum 3 during the operation of the washing / drying machine, the baffle 33 is formed in a shape with chamfered corners so as not to damage the laundry. For the same reason, the convex part 34 is formed in a shallow bowl shape as described above so that the central part is raised. Therefore, if a part of the convex portion 34 is cut out, a substantially crescent-shaped cutout portion 35 is formed. With such a shape, the laundry is not damaged. In addition, the convex part 34 which has the notch part 35 may be any shape as long as it is a shape which does not damage the laundry.

  As shown in FIG. 5, four protrusions 34 are illustrated as being provided on the one side surface 33 a of the baffle 33 at equal intervals. One convex portion 34a on the front end side (the opening 30 side of the rotating drum 5) of the baffle 33 is formed so that the cutout portion 35a faces the back side of the baffle 33 (the bottom side of the rotating drum 5). In addition, each notch 35b of the three convex portions 34b is formed to face the tip side of the baffle 33.

  Next, the convex portion 36 provided on the other side surface (the right side surface in the lower part of FIG. 4) 33b of the baffle 33 will be described. A plurality (four) of convex portions 36 are provided on the other side surface 33 b of the baffle 33. Each convex portion 36 has a cutout portion 37 that protrudes in a bowl shape from the side surface 33b and is cut out at an upper portion thereof to form a crescent-shaped surface shape. The convex portions 36 are arranged at equal intervals in the longitudinal direction of the baffle 33 (the axial length direction of the rotating drum 3). Since the baffle 33 is in contact with the laundry in the rotary drum 3 during the operation of the washing / drying machine, the baffle 33 is formed in a shape with chamfered corners so as not to damage the laundry. For the same reason, like the convex portion 34, the convex portion 36 is formed in a shallow ridge shape so that the central portion is raised. Therefore, if a part of the convex portion 36 is cut out, a cutout portion 37 having a substantially crescent shape is formed. Therefore, the laundry is not damaged. The convex portion 36 may have any shape as long as it does not damage the laundry.

  As shown in FIG. 6, four convex portions 36 are provided at equal intervals on one side surface 33 b of the baffle 33. One convex portion 36b on the back side of the baffle 33, that is, the side facing the bottom portion of the rotating drum 3, is formed such that the notch 37b faces the opening 30 side (the tip side of the baffle 33) of the rotating drum 3. ing. In addition, each notch 37a of the three convex portions 36a is formed to face the bottom side of the rotating drum 3.

  As described above, in the present embodiment, the four convex portions 34 and 36 formed on the side surfaces 33a and 33b of the baffle 33 are all formed in the same shape, but the tip of one side surface 33a of the baffle 33 is formed. One convex portion 34a, 36b arranged on the bottom side of the rotating drum 3 on the side and the other side surface 33b of the baffle 33 is different from the other three convex portions 34b, 36a in the positions of the notches 335a, 37b. It is provided differently. Specifically, the convex portion 34 a is biased so that the cutout portion 35 a faces the back side of the bottom of the rotating drum 3, and the three convex portions 34 b are configured such that the cutout portion 35 b is slightly biased toward the tip side of the baffle 33. Is formed. On the contrary, the convex part 36 b is formed in a form in which the notch part 37 b is slightly biased toward the tip side of the baffle 33. The remaining three convex portions 36 a are formed in a form in which the notch portion 37 a is slightly biased toward the bottom surface side of the rotating drum 3.

  The baffle 33 shown in FIGS. 5 and 6 is brought into contact with the bottom surface of the rotating drum 3 without the laundry being sandwiched between the other end opposite to the tip side, and the mountain-shaped bottom base abuts against the inner peripheral surface of the rotating drum 3. It is attached (screwed) to the rotating drum 3 while being in contact. In the washing and drying machine of this embodiment, the water tub 2 and the rotating drum 3 are supported in an inclined posture with respect to the horizontal plane with the openings 20 and 30 facing upward. When the baffle 33 having the above-described configuration is attached to the rotating drum 3, the baffle 33 is attached in an inclined state with respect to the horizontal plane. Therefore, in the state where the baffle 33 is attached to the rotary drum 3, the cutout portion 35a of the convex portion 34a on the side surface 33a side is washed more than the direction directly above the horizontal plane as shown in FIG. It is arranged at a position biased to the back side of the machine (bottom surface of the rotating drum). Further, as shown in FIG. 2, the notches 35 b of the three convex portions 34 b are arranged at positions where the surfaces are biased toward the opening 30 side of the rotary drum 3 with respect to the horizontal plane from the direction directly above or directly above. The

  On the other hand, the notched portion 37b of the convex portion 36b on the other side surface 33b side is biased toward the opening 30 side of the rotary drum 3 from the direction directly above the horizontal plane, contrary to the state shown in FIG. It is arranged at the position. Further, the notches 37a of the three convex portions 36a are arranged at positions where the surfaces thereof are biased to the bottom of the rotary drum 3 with respect to the horizontal plane or directly above or directly above.

  In the washing / drying machine having such a baffle 33, when the rotating drum 3 rotates counterclockwise in FIG. 4, the laundry and the washing water in the rotating drum 3 collide with the convex portions 34b and 34a of the baffle 33, They are guided in the directions indicated by arrows B and A in FIG. In addition, when the washing water is guided in the directions of arrows B and A, the laundry that does not directly collide with the convex portions 34a and 34b also moves in the directions of arrows B and A along with the flow of the washing water. . Here, the direction indicated by the arrow A is a direction in which the laundry and the washing water are guided to the bottom side of the rotary drum 3, and the direction indicated by the arrow B is the opening 30 side of the laundry and the washing water in the rotary drum 3. It is the direction led to. Therefore, the laundry tends to move to the opening 30 side of the rotary drum 3, and a part of the laundry on the opening 30 side is guided to the bottom side of the rotary drum 3. As a result, the laundry is replaced. Furthermore, the laundry that moves to the opening 30 side of the rotary drum 3 drops and contacts the concavo-convex portion formed by the protrusion 10 c of the lid body 10 b of the lid body 10. As a result, an action similar to the action of scrubbing with the washing board occurs, and the cleaning effect is promoted.

  Further, since the laundry is moved to the bottom side of the rotary drum 3 by the convex portion 34a on the tip side of the baffle 33, the laundry is prevented from being clogged on the opening 30 side. At this time, the rotation axis direction of the rotating drum 3 may be inclined downward toward the bottom surface, and the laundry that moves to the opening 30 side is further prevented from moving to the opening side, and the opening 30 side Rubbing by contact with the concavo-convex portion (projection 10c) formed by the projection 10c of the lid 10 at the time of dropping is performed without dropping, and the cleaning effect is enhanced.

  Next, the rotating drum 3 is rotated for a certain period of time in a clockwise direction opposite to the counterclockwise rotation in FIG. By this rotation, the laundry and the washing water in the rotating drum 3 collide with the convex portions 36b and 36a formed on the side surface 33b on the opposite side of the baffle 33, and the action of the notches 37b and 37a in FIG. They are guided in directions indicated by arrows A and B, respectively. In addition, when the washing water is guided in the directions of arrows A and B, the laundry that does not directly collide with the convex portions 36b and 36a also moves in the directions of arrows A and B along with the flow of the washing water. . Here, the direction indicated by the arrow A is a direction in which the laundry and the washing water are guided to the bottom side of the rotary drum 3, and the direction indicated by the arrow B is the opening 30 side of the laundry and the washing water in the rotary drum 3. It is the direction led to. Therefore, the laundry tends to move to the bottom side of the rotating drum 3. Further, a part of the laundry on the bottom side is guided to the opening 30 side of the rotary drum 3. As a result, the laundry is replaced.

  Further, the laundry that moves to the bottom side of the rotating drum 3 comes into contact with a raised portion 38 c of the bottom cover 38 provided on the bottom surface of the bottom of the rotating drum 3. At this time, as described above, a scrubbing effect by the washing board is generated, and the cleaning effect is promoted. Further, the shape of the raised portion 38c is not formed radially in the radial direction, but is provided in a form inclined with respect to the radial direction, so that the state of contact with and contact with the laundry becomes longer, and the shape of the raised portion 38c is caused by washing. The effect is also promoted.

  As described above, the laundry tends to move toward the bottom surface of the rotating drum 3 due to the clockwise rotation of the rotating drum 3, but the convex portion 36a on the bottom side guides the laundry to the opening 30 side. Works. Therefore, a part of the laundry on the bottom side moves to the opening side without the laundry being concentrated on the bottom of the rotating drum 3. As a result, the laundry is replaced, and a washing effect due to the contact between the laundry can be expected.

  As described above, since the rotation direction of the rotating drum 3 is reversed at regular intervals, the laundry is frequently replaced and the cleaning effect is enhanced. In addition, the laundry concentrates on the bottom surface of the rotating drum 2 and the opening 30 side and is not biased, and a good cleaning action can be expected.

  In the above embodiment, the laundry is moved from the bottom surface of the rotating drum 3 to the opening 20 side by the rotation of the rotating drum 1 in the counterclockwise direction, and is moved to the bottom surface side by the clockwise rotation. However, it is a matter of course that the arrangement positions of the convex portions 34 and 36 may be reversed so that they move to the opening 20 side when rotating clockwise and to the bottom side when rotating counterclockwise.

(Second Embodiment)
In the washing / drying machine of the present embodiment, since the rotary drum 3 is inclined, the laundry in the rotary drum 3 tends to accumulate on the bottom side of the rotary drum 3. Therefore, the movement toward the opening 30 can be effectively performed by the three convex portions 34b as in the previous embodiment. Also, the laundry moved to the opening 30 side can be moved in the bottom direction of the rotating drum 3 in accordance with the rotation of the inclined rotating drum 3 even with only one convex portion 34a provided on the opening 30 side. ing. Thereby, the laundry in the rotating drum 3 is not only moved up and down by being lifted and dropped by the baffle 33, but also from the bottom surface side of the rotating drum 3 to the opening 30 side, and from the opening 30 side to the bottom side. Also move effectively. As described above, the laundry in the rotary drum 3 is not only moved in the vertical direction but also in the axial direction of the rotary drum 3 (the front-rear direction of the washing / drying machine). Since the laundry position is not biased and the laundry can be stirred efficiently, the washing performance can be improved.

  On the other hand, by rotating the rotating drum 3 in the clockwise direction in FIG. 4, the three convex portions 36a on the other side surface 33b side of the baffle 33 are moved to the bottom side of the rotating drum 3 (see FIG. 6). It is made to act, and it moves to the opening 30 side of the rotating drum 3 by the convex part 36b of the bottom part side. In this case, as shown in FIG. 4, when the rotating drum 3 is rotated because its bottom surface is inclined downward, the laundry tends to move to the bottom side. Therefore, the number of the convex portions 36b may be two. For example, when the convex part 36a adjacent to the convex part 36b on the bottom side is rotated in the clockwise direction of the rotary drum 3, the convex part 36b having a notch 37b for moving the laundry in the B direction (direction of the opening 30) is used. be able to. Accordingly, the four convex portions 36 provided on the side surface 33b side of the baffle 33 become two convex portions 36a and two convex portions 36b, and tend to move toward the bottom side of the rotating drum 3 by rotating clockwise. The action of moving the laundry to the opening 30 side is facilitated, the replacement of the laundry is performed well, and the laundry can be prevented from being biased to the bottom.

  In the above description, the rotary drum 3 is inclined in such a manner that the bottom portion is downward in FIG. When the rotating drum 3 is arranged in a horizontal state without being inclined, the laundry is lifted by the baffle 33 and falls directly below the laundry. In such a case, the notches 35 and 37 of the convex portions 34 and 36 provided on the side surfaces 33a and 33b of the baffle 33 may be provided so as to face in one direction. In other words, all of the four convex portions 34 provided on the one side surface 33a of the baffle 33 have a convex portion 34b shape, and all the convex portions 36 provided on the other side surface 33b have a convex portion 36a shape.

  With the above configuration, when the rotating drum 3 is rotated counterclockwise in FIG. 4, the laundry moves to the opening 30 side, and when rotated in the clockwise direction, the laundry is moved to the bottom side. This forward / reverse rotation causes the laundry to be replaced, and the cleaning effect is enhanced.

(Third embodiment)
According to each embodiment described above, both side surfaces 33a of the baffle 33 are configured to move the laundry in the axial direction of the rotating drum 3 by rotating the rotating drum 3 counterclockwise or clockwise. The form which provided the convex parts 34 and 36 in 33b was demonstrated.

  The rotation control of the rotary drum 3 that further enhances the cleaning effect by adopting such a form will be described as a third embodiment. FIG. 8 is a block diagram showing a schematic configuration of the operation control unit 16 provided corresponding to the operation panel 15 arranged in the upper front portion of the washing and drying machine described above. The operation control unit 16 includes a CPU (Central Processing Unit) 161 that executes a control program, a storage unit 162 that stores a control program and data, an output interface 163, and a timer 164.

  The CPU 141 uses the storage unit 162 as a work area, reads out and executes a control program stored in the storage unit 162. The CPU 161 counts time with a timer 164 as necessary.

  The storage unit 162 stores, for example, a ROM (Read Only Memory) that stores a control program, a RAM (Random Access Memory) that temporarily holds data necessary for execution of the control program, and data necessary for execution of the control program. A non-volatile memory.

  The operation control unit 16 controls the rotation and stop of the rotary drum 3 by outputting a drive signal and a stop signal to the drum motor 4 via the output interface 163.

  Next, the operation at the time of washing of the washing / drying machine configured as described above will be described with reference to the drawings. FIG. 9 shows a control flowchart of a washing process performed by the washing / drying machine, and FIG. 10 shows a timing chart relating to rotation control of the rotary drum 3. In the flowchart illustrated in FIG. 9, “step” is represented by “S”. In the sentence, “S” represents “step”.

  When the operation control unit 16 detects that the washing process and the start key are selected by the operation panel 15 in a state where the laundry is put in the rotary drum 3, the operation control unit 16 starts the washing process. When the washing process is started, the operation control unit 16 determines the capacity of the loaded laundry (S1). For example, the operation control unit 16 measures the current value of the drum motor 4 when the rotary drum 3 is rapidly increased to a predetermined number of revolutions, and compares the value with the threshold value stored in the storage unit 162. Determine the laundry capacity.

  Next, the operation control unit 16 opens the water supply valve 18 (a state in which the first water supply port is opened and tap water is poured into the water tank 3 from the water supply tank 19), and water supply to the inside of the water tank 3 is started (S2). ). Washing water is water in which an appropriate amount of detergent is dissolved. The detergent may be put into the rotating drum 3 together with the laundry, or is put into a detergent case (not shown) arranged in the middle of the water supply pipe 19 and dissolved in the washing water flowing through the water supply pipe 19 and put into the water tank 2. It may be supplied. The washing water supplied in this manner is stored inside the water tank 2 and also stored inside the rotating drum 3 through the small holes 32 provided on the peripheral surface of the rotating drum 3.

  Subsequently, the operation control unit 16 determines whether or not the water level in the rotary drum 3 has reached the set water level (S3). For example, the operation control unit 16 detects the water level in the rotary drum 3 from the value of a water level sensor (not shown) and compares the value with a threshold value stored in advance in the storage unit 162 to reach the set water level. Whether or not is determined. Here, the operation control unit 16 may perform control so as to change the set water level according to the capacity of the laundry. When the water level in the rotating drum 4 reaches the set water level (“YES” in S3), the operation control unit 16 closes the water supply valve 18 and stops the supply of the washing water (S4).

  Next, the operation control unit 16 controls the drum motor 4 to rotate the rotary drum 3 at a low speed, and executes low-speed rotary washing (S5). From the start of the low-speed rotation washing, the timer 164 measures time and determines whether or not a predetermined time has elapsed (S6).

  Control of low-speed rotary washing by the operation control unit 16, that is, rotation control of the rotary drum 3 will be described with reference to FIG. In FIG. 10, the horizontal axis indicates time [s], and the vertical axis indicates the rotational speed [rpm] of the rotating drum 3. Hereinafter, the rotation direction of the rotary drum 3 will be described assuming that the counterclockwise rotation in FIG. 4 is normal rotation and the clockwise rotation is reverse rotation.

  In the low-speed rotation washing, the operation control unit 16 drives the rotary drum 3 to rotate at a cycle of forward rotation and stop of the rotational speed R1, reverse rotation of the rotational speed R1, and stop. Here, the rotational speed R1 is, for example, 30 rpm, the time T1 for driving the rotating drum 3 to rotate forward and backward is, for example, 10 seconds, and the time T2 for stopping the rotating drum 3 is, for example, 5 seconds.

  Further, the acceleration when the rotating drum 3 is rotated forward or backward from the stopped state can be appropriately set, and is, for example, 30 rpm / second. In FIG. 10 and the following description, for the sake of simplicity, the period in which the rotating drum 3 is accelerated is omitted.

  As described above, in the low-speed washing, the operation control unit 16 rotationally drives the rotary drum 3 so as to repeat the forward rotation, stop, reverse rotation, and stop cycles a plurality of times. Specifically, the operation control unit 16 performs the time measurement by the timer 164 from the start of the low-speed rotation washing, and controls to repeat the cycle until a predetermined time elapses. In addition, the time which repeats the said period can be set suitably.

  The movement of the laundry and the operation of the washing process in the low-speed rotary washing performed as described above will be described.

  FIG. 11 is an explanatory view showing the movement of the laundry in the washing process executed by the washing / drying machine, and FIG. 11 (a) shows the movement of the laundry during the low-speed rotary washing, and FIG. 11 (b). Shows the movement of the laundry during the medium-speed rotary washing described later. Here, FIG. 11 is a view of the rotating drum 3 viewed from the opening 30 side as in FIG. 4, and the arrows indicate the movement of the laundry. Note that the laundry also moves in both forward and reverse directions when the rotating drum 3 is rotated forward and backward, and FIG. 11 shows only one of them.

  In the low-speed rotary washing shown in FIG. 11A, the laundry is tumbled while the rotary drum 3 is rotated. In the small tumbling, the laundry is lifted up to the middle of the rotating drum 3 as indicated by an arrow C1, and then repeatedly drops. The rotation angle of the laundry at the time of small tumbling is, for example, less than 90 degrees. At this time, the laundry is lifted and dropped by the baffle 33, and at the same time, the laundry is moved forward by the action of the convex portion 34b, that is, if it moves to the lid 10 side. And it moves to the bottom part side of the rotating drum 3 by the effect | action of the convex part 34a. The cleaning effect by the rubbing of the laundry due to these movements occurs. Furthermore, at the time of normal rotation, when the laundry is lifted or dropped, the laundry comes into contact with the lid body 10b of the lid body 10 and is pressed against the protrusion 10c provided on the lid body 10b.

  Moreover, although the laundry is not shown in FIG. 11A at the time of reverse rotation of the rotary drum 3, the laundry falls at a rotation position of less than 90 degrees when lifted. At this time, the laundry is moved to the bottom side of the rotary drum 3 and is moved to the opening 30 side of the rotary drum 3 by the convex portion 36a on the bottom side, and similarly, washing by rubbing due to replacement of the laundry is performed. . In this way, it is possible to expect a cleaning effect due to rubbing that the laundry is replaced when the direction of movement of the laundry is switched when the rotating drum 3 is rotated in both forward and reverse directions. And the laundry is immersed in the wash water for the period when rotation of the rotating drum 3 was stopped.

  In the low-speed rotary washing performed as described above, the laundry is tumbled in the vicinity of the lower portion of the rotary drum 3 in which the washing water is accumulated, and the washing action is performed by the replacement at that time. Not only is the opportunity increased, but the effect of wetting the laundry with washing water is promoted. In addition, since the laundry is pressed against the protrusion 10c and the raised portion 38c at the bottom of the rotating drum 3 in a state where the laundry is in contact with the washing water, the washing water penetrates to the back of the laundry fibers. As a result, the laundry that has undergone the low-speed rotary washing is sufficiently wetted by the wash water, and the subsequent medium-speed rotary washing described below is executed.

  Next, according to the flowchart of FIG. 8, the operation control unit 16 makes the rotating drum 3 faster than the low-speed rotary washing when a predetermined time has elapsed from the start of the low-speed rotary washing (“YES” in S6). The drum motor 4 is controlled so as to be rotated at (3), and the medium-speed rotary washing is executed (S7). In this medium-speed rotary washing, the timer 164 measures the time from the start of the medium-speed rotary washing to determine whether or not a predetermined time has elapsed (S8).

  When a predetermined time has elapsed from the start of the medium-speed rotary washing (“YES” in S8), the operation control unit 16 controls the drum motor 4 to stop the rotary drum 3, and then opens the drain valve 25. Then, the washing water is controlled to be drained from the water tank 2 (S9). The washing process is executed as described above.

  During the washing process, the driving operation unit 16 may operate the circulation pump 27 to control the washing water to circulate. The circulation pump 27 sucks and pressurizes the washing water in the water tank 2 and sends it to the circulating water nozzle via the circulating water hose 28. The circulating water nozzle injects wash water into the rotating drum 3. The water sprayed from the circulating water nozzle repeatedly pours onto the laundry in the rotating drum 3, thereby increasing the chance of contact between the laundry and the washing water and enhancing the cleaning effect.

  As described above, the rotation control of the rotary drum 3 by the medium-speed rotary washing and the operation thereof will be described.

  In the medium-speed rotation washing, as shown in the time chart of FIG. 10, the operation control unit 16 performs forward rotation of the rotation speed R2, forward rotation of the rotation speed R3, stop, reverse rotation of the rotation speed R2, reverse rotation of the rotation speed R3, and The rotary drum 3 is rotationally driven at a stop cycle. Here, the rotation speed R2 is 46 rpm, for example, and the rotation speed R3 is 49 rpm, for example. Further, the times T3 and T4 for driving the rotating drum 3 to rotate forward and reversely are, for example, 10 seconds, and the time T5 for stopping the rotating drum 3 is, for example, 5 seconds. In the medium-speed rotary washing, the rotary drum 3 is once rotated at the rotational speed R2 and then rotated at R3. However, the rotational speed of the rotary drum 3 may be increased to R3 at a stroke. Here, when the rotary drum 3 is once rotated at the rotation speed R2 and then rotated at R3, the load applied to the drum motor 5 can be reduced.

  Further, the acceleration when the rotating drum 3 is rotated forward or reverse at the rotation speed R2 from the stopped state is, for example, 10 rpm / second, and the acceleration when the rotation drum 3 is changed from the rotation speed R2 to the rotation speed R3 is, for example, 30 rpm. / Sec. The acceleration when the rotating drum 3 is rotated forward or reverse at the rotation speed R2 from the stopped state is made smaller than the acceleration when the rotation drum 4 is changed from the rotation speed R2 to the rotation speed R3. There is no. Here, when the acceleration when the rotating drum 3 is rotated forward or reverse at the rotation speed R2 from the stopped state is smaller than the acceleration when the rotation drum 3 is changed from the rotation speed R2 to the rotation speed R3, the drum motor 4 The load applied to the can be reduced.

  Further, in the medium-speed rotary washing, the operation control unit 16 rotates the rotary drum 3 so as to repeat the forward rotation, stop, reverse rotation, and stop cycles a plurality of times. Specifically, the operation control unit 16 performs the time measurement by the timer 164 from the start of the medium-speed rotary washing, and controls to repeat the cycle until a predetermined time elapses. In addition, the time which repeats the said period can be set suitably.

  By controlling the rotation of the rotary drum 3 by medium-speed rotary washing, the laundry is lifted and dropped as shown in FIG. That is, in the medium-speed rotary washing, the laundry is tumbled while the rotary drum 3 is rotated. In the large tumbling, the laundry is lifted up to the upper part of the rotating drum 3 as indicated by an arrow C2, and then repeatedly drops. Then, the laundry is more likely to be hit against the peripheral wall of the rotating drum 3 by dropping at a higher position than the previous low-speed rotary washing. The rotation angle of the laundry at the time of large tumbling is, for example, in the range of 90 degrees or more and 180 degrees or less. Further, when the laundry is lifted or dropped, it comes into contact with the protrusion 10c provided on the lid body 10b of the lid body 10. Further, when the laundry is lifted and dropped, the laundry is replaced when the moving direction is reversed when moving to the opening 30 side of the rotating drum 3 during forward rotation and moving toward the bottom side of the rotating drum 3 during reverse rotation. Washing by rubbing is promoted. At this time, the rotational speed of the rotating drum 3 is changed from R2 to R3, so that the moving speed of the laundry can be expected to change, and the cleaning effect by this can be enhanced. Further, when the laundry is moved to the bottom side of the rotating drum 3 at the time of reverse rotation, the same action as the washing with the washing board occurs due to the contact with the raised portion 38c of the bottom portion. Also, the laundry is rotated in both forward and reverse directions by the forward and reverse rotation of the rotating drum 4. Further, the laundry is immersed in the washing water during the period when the rotation of the rotary drum 3 is stopped.

  In the medium-speed rotary washing performed as described above, the laundry touches the protrusion 10c and the raised portion 38c and receives frictional resistance, in addition to the tapping washing. And since the protrusion 10c and the raised part 38c act as a washing board, the dirt of the laundry is squeezed out together with the washing water, and the washing effect is promoted.

  Further, since the laundry comes into contact with the protrusion 10c and the raised portion 38c and receives frictional resistance, the contacted portion of the laundry is pulled to the lid 10 side and the raised portion 38c of the rotary drum 3, so that the laundry There is an effect that the clothes are not entangled, loosen, and the position of the laundry is changed. As a result, it is possible to eliminate the bias of the laundry to be removed.

  In addition, since the medium-speed rotary washing is performed after the low-speed rotary washing, the laundry is first wetted with washing water by small tumbling and then large tumbled. For this reason, since the laundry which increased its own weight by containing washing water contacts the protrusion 10c, active frictional resistance is generated between the laundry and the protrusion 10c, and the cleaning power is improved. As in the prior art, when large tumbling is performed before the washing water penetrates into the laundry, the weight of the laundry is light, so that only a small frictional force is generated between the laundry and the laundry protrusion. Moreover, since the washing water that contributes to washing does not sufficiently penetrate into the laundry, the washing effect is also small. In this regard, in the present invention, at the beginning of the washing process, the laundry can be sufficiently permeated into the laundry by first tumbling the laundry. As described above, by performing the low-speed rotation washing and the medium-speed rotation washing, the stain removal of the laundry is further improved.

  Furthermore, in combination with the above-described operation, in the medium speed washing, since the rotation is faster than in the low speed washing, the movement speed of the laundry is fast and the moving distance tends to be longer than that in the low speed washing. is there. Therefore, combined with the fact that the manner in which the laundry falls is different, the washing effect such as the speed and distance when moving the laundry to the opening 30 and the bottom side is different, and a synergistic washing effect can be expected. .

  As described above, the washing process is executed and finished. Thereafter, in the rinsing process to be executed, first, the operation control unit 16 opens the drain valve 25 and drains the washing water from the water tank 2, and then rotates the rotating drum 3 at a high speed to perform intermediate dehydration. In the intermediate dehydration, the laundry is pressed against the peripheral wall of the rotating drum 3 by rotating the rotating drum 3 at a high speed, so that the washing water contained in the laundry can be removed. Next, the operation control unit 16 opens the water supply valve 18 to supply rinse water that does not contain detergent, and rotates the rotary drum 3 at a low speed. The intermediate dehydrated laundry is wetted in contact with the rinse water supplied thereafter, and rinsed by repeatedly lifting and dropping in the rotating drum 3. The above rinsing process may be repeated a plurality of times. Further, the circulation pump 27 may be driven during the rinsing process. In this case, the spray water sprayed from the circulating water nozzle repeatedly pours onto the laundry in the rotating drum 3, increasing the chance of contact between the laundry and the rinse water, thereby enhancing the rinse effect.

  In the final dewatering step executed after the rinsing step, the operation control unit 14 controls the rotary drum 3 in the same manner as the intermediate dewatering described above. Rinsing water contained in the laundry can be removed by performing the final dehydration step.

  Here, in the above-described rinsing process, as in the washing process, by rotating the rotating drum 3 forward and backward, the laundry has the same effect as the washing process, and the effect of washing out the detergent can be sufficiently expected. Therefore, the effect of rinsing is improved, and shortening of the rinsing time can be expected sufficiently.

(Fourth embodiment)
In the control flow of FIG. 9, it has been described that the washing process is completed and the rinsing process is executed when the medium-speed rotary washing is completed for a predetermined time. On the other hand, in the timing chart of FIG. 10, in the rotation control in the washing process of the rotary drum 3, high-speed rotary washing is also illustrated after the medium-speed rotary washing.

  The high-speed rotary washing will be described below. In the control flow of FIG. 9, high-speed rotary washing is performed for a predetermined time between steps S8 and S9, and the drainage process in step S9 is performed after the elapse of the time. As for high-speed rotary washing, when a predetermined time has elapsed since the start of medium-speed rotary washing (“YES” in S8), the operation control unit 16 rotates the rotating drum 3 at a speed faster than that of the medium-speed rotary washing. In this way, the drum motor 4 is controlled to perform high-speed rotary washing. This high-speed rotary washing measures the time by the timer 164 from the start of the high-speed rotary washing and determines whether or not a predetermined time has elapsed.

  When a predetermined time has elapsed from the start of the high-speed rotary washing, the operation control unit 16 controls the drum motor 4 so as to stop the rotary drum 3, then opens the drain valve 25, and wash water from the washing tub 3. It controls to drain (S9). As described above, when the low-speed rotation washing, the medium-speed rotation washing, and the high-speed rotation washing are finished, the washing process is finished.

  As shown in FIG. 10, the operation control unit 16 first rotates the rotating drum 3 in the forward direction at the rotational speed R3, forwardly rotates at the rotational speed R4, forwardly rotates at the rotational speed R5, stops, reverses the rotational speed R3, and rotates at the rotational speed R4. , And the rotational speed R5 is rotated and driven at a cycle of reverse rotation and stop. Here, the rotation speed R3 is, for example, 49 rpm, the rotation speed R4 is, for example, 60 rpm, and the rotation speed R5 is, for example, 80 rpm. The time T11 for driving the rotating drum 3 to rotate forward and backward is, for example, 5 seconds, T12 is, for example, 10 seconds, and T13 is, for example, 5 seconds. The time T14 for stopping the rotating drum 3 is, for example, 5 seconds. In the high-speed rotary washing, the rotary drum 3 is temporarily rotated at the rotational speeds R3 and R4 and then rotated at R5. However, the rotational speed of the rotary drum 3 may be increased to R5 at a stroke. Here, when the rotary drum 3 is once rotated at the rotation speeds R3 and R4 and then rotated at R5, the load applied to the drum motor 4 can be reduced.

  Further, the acceleration when the rotating drum 3 is rotated forward or reverse at the rotation speed R3 from the stopped state is, for example, 10 rpm / second, and the acceleration when the rotation drum 3 is changed from the rotation speed R3 to the rotation speed R4 is, for example, 30 rpm. The acceleration when rotating the rotating drum 3 from the rotational speed R4 to the rotational speed R5 is, for example, 10 rpm / second. The acceleration when the rotating drum 3 is rotated forward or reverse at the rotation speed R3 from the stopped state and the acceleration when the rotation speed R4 is changed to the rotation speed R5 are changed from the rotation speed R3 to the rotation speed R4. Although it is smaller than the acceleration at the time, it is not always necessary. Here, the acceleration when the rotating drum 3 is rotated forward or reverse at the rotational speed R3 from the stopped state and the acceleration when the rotational speed R4 is changed to the rotational speed R5 are changed from the rotational speed R3 to the rotational speed R4. When the acceleration is smaller than the time acceleration, the load applied to the drum motor 4 can be reduced.

  Further, in high-speed rotary washing, the operation control unit 16 rotates the rotary drum 3 so as to repeat the forward rotation, stop, reverse rotation, and stop cycles a plurality of times. Specifically, the operation control unit 13 performs the time measurement by the timer 164 from the start of the high-speed rotary washing, and controls to repeat the cycle until a predetermined time elapses.

  The movement of the laundry and the action of the washing process in the high-speed rotary washing performed as described above will be described below. In particular, when the rotary drum 3 is driven to rotate at a rotational speed R3 or R4, as shown in FIG. 11B, the laundry is lifted by the baffle 33 and falls more than 180 degrees or more. It will be. Thereby, the same effect as medium-speed washing can be expected. And if it rotates with rotation speed R5, it will rotate in the state stuck on the surrounding wall, and the laundry will collide with the washing water collected on the rotation drum 3, without dropping from the rotation drum 3.

  FIG. 12 is an explanatory diagram showing the movement of the laundry in a state where the rotary drum 3 rotates at the rotation speed R5 in the high-speed rotary washing. FIG. 12 is a view of the rotary drum 3 as seen from the opening 30 side as in FIG. 10, and the arrow C <b> 3 is the movement of the laundry. In addition, although the rotation of the rotating drum 4 is rotated in the normal and reverse directions, the laundry moves in the same manner as in the normal rotation, but FIG. 12 shows only one of them.

  In the high-speed rotary washing, while the rotary drum 4 is rotated at the rotational speed R5, the laundry rotates together with the rotary drum 3 while being stuck to the peripheral wall of the rotary drum 3 by centrifugal force. That is, the laundry is pressed against the peripheral wall of the rotary drum 3 and collides with the washing water to be washed. Further, the laundry is rotated in both forward and reverse directions by the forward and reverse rotation of the rotary drum 3. Further, the laundry is immersed in the washing water during the period when the rotation of the rotary drum 3 is stopped. In addition, while the rotational speed of the rotating drum 3 is being increased from R3 to R5, the laundry is tumbled in the rotating drum 3 and remains attached to the peripheral wall of the rotating drum 3 together with the rotating drum 3. It turns into a rotating motion.

  In the high-speed rotary washing performed as described above, the laundry is pushed and washed by being pressed against the peripheral wall of the rotary drum 3, so that the dirt on the laundry can be squeezed out together with the washing water that has penetrated the laundry. . In addition, since high-speed rotary washing is performed after low-speed rotary washing and medium-speed rotary washing are performed, most of the dirt on the laundry is in a state of being eluted in the washing water that has penetrated the laundry. It can push out dirt on the laundry. As a result, the laundry can be satisfactorily cleaned. When the laundry is rotating together with the rotating drum 3 while sticking to the peripheral wall of the rotating drum 3, the laundry does not make much contact with the protrusion 10c provided on the lid 10, In the middle of increasing the rotational speed of the rotating drum 3, the laundry comes into contact with the protrusion 10c. In accordance with this, the moving direction of the laundry is reversed, and the cleaning effect is promoted by the change of the direction. As a result, the contacted portion of the laundry is pulled to the door 6 side, so that there is an effect that the laundry is not entangled and loosened or the position of the laundry is changed.

(Fifth embodiment)
In this embodiment, in the washing step, the third and third points are that the motor is controlled so that the laundry is rotated at the rotation speed at which the laundry is tumbled in the middle while the laundry is rotating at the rotation speed at which the laundry is tumbled. This is different from the fourth embodiment. That is, FIG. 13 shows a timing chart of this embodiment, which is different from that of FIG.

  As shown in FIG. 13, in the low-speed rotation washing, the operation control unit 16 performs normal rotation of the rotation speed R1, normal rotation of the rotation speed R2, forward rotation of the rotation speed R1, stop, reverse rotation of the rotation speed R1, and rotation speed R2. The rotary drum 3 is driven to rotate at the cycle of the reverse rotation, the reverse rotation of the rotational speed R1, and the stop period. The time T21 for driving the rotating drum 3 to rotate forward and backward is, for example, 6 seconds, T22 is, for example, 3 seconds, and T23 is, for example, 6 seconds. The time T24 for stopping the rotating drum 3 is, for example, 5 seconds.

  The acceleration when the rotating drum 3 is rotated forward or reverse at the rotation speed R1 from the stopped state is, for example, 30 rpm / second, and the acceleration when the rotation drum 3 is changed from the rotation speed R1 to the rotation speed R2 is, for example, 30 rpm. The acceleration when rotating the rotating drum 3 from the rotational speed R2 to the rotational speed R1 is, for example, −30 rpm / second.

  Further, in the low-speed rotation washing, the operation control unit 16 rotates the rotary drum 3 so as to repeat the forward rotation, stop, reverse rotation, and stop cycles a plurality of times. Specifically, the operation control unit 16 performs the time measurement by the timer 164 from the start of the low-speed rotation washing, and controls to repeat the cycle until a predetermined time elapses.

  Further, in the low-speed washing, the operation control unit 16 has been described for the case where the rotating drum 3 is rotationally driven at the rotation speed R1, the rotation speed R2, the rotation speed R1, and the rotation cycle. It is not limited. For example, the operation control unit 14 may drive the rotary drum 3 to rotate at a cycle of rotation of the rotation speed R1, rotation of the rotation speed R2, and stop and rotation and rotation of the rotation speed R1 a plurality of times in one cycle. The rotation of the number R2 may be repeated.

  Next, the movement of the laundry and the effect of the washing process in the low-speed rotary washing performed as described above will be described with reference to FIG.

  While the rotating drum 4 is rotated at the rotational speed R1, the laundry is tumbled. In the small tumbling, the laundry is lifted up to the middle of the rotating drum 3 as shown by an arrow C1 in FIG. The rotation angle of the laundry at the time of small tumbling is, for example, less than 90 degrees. Further, when the laundry is lifted or dropped, the laundry comes into contact with the protrusion 10c of the lid 10 during normal rotation. When the rotating drum 3 is rotated in reverse, it contacts the raised portion 38c at the bottom.

  In the present embodiment, the rotational speed is once increased to R2 while the rotary drum 3 is rotated at the rotational speed R1. While the rotary drum 3 is rotated at the rotational speed R2, the laundry is tumbled. In the large tumbling, the laundry is lifted up to the top of the rotating drum 3 as indicated by an arrow C2 in FIG. The rotation angle of the laundry at the time of large tumbling is, for example, in the range of 90 degrees to 180 degrees. When the rotating drum 3 rotates forward, the laundry comes into contact with the protrusion 10c of the lid 10 when it is lifted or dropped. During the reverse rotation of the rotary drum 3, the laundry comes into contact with the bottom protrusion.

  Here, especially when there is a large amount of laundry, when the rotating drum 3 is rotated forward or reverse, only the small tumbling in the vicinity of the lower part makes it difficult for the laundry on the center side and the laundry on the outer side to be replaced, and the washing water is sufficiently washed. In this way, the laundry is lifted to the upper part of the rotating drum 3 by large tumbling in the middle of the small tumbling, and when the laundry is subsequently dropped, It becomes easy to change things and outside laundry. At this time, the laundry is moved to the opening 30 side when the rotating drum 3 is rotated forward, and is moved to the bottom side during the reverse rotation. In addition, during normal rotation, the laundry is lifted by a large tumbling, or when it is subsequently dropped, it comes into contact with the protrusion 10c of the lid body 10, so that the portion in contact with the laundry is covered by the frictional resistance. Pulled to the body 10 side. For this reason, the replacement of the laundry is further promoted. Similarly, when the rotating drum 3 is rotated in the reverse direction, the laundry is moved to the bottom side, whereby the replacement of the laundry is promoted by the contact with the protrusion. As a result, the washing water can be permeated through the entire laundry without any bias.

  In the low-speed rotary washing performed as described above, the laundry has an increased chance of contacting the laundry with the washing water, and the effect of wetting the laundry with the washing water is promoted. Further, since the laundry is pressed against the protrusions 10c and the raised portions 38c in a state where the laundry is in contact with the washing water, the washing water is penetrated to the back of the laundry fibers. As a result, the laundry that has undergone the low-speed rotary washing is in a state of being sufficiently wetted by the wash water, and in the subsequent medium-speed rotary washing, the stain removal of the laundry can be further improved.

  Further, in the third to fifth embodiments described above, the case has been described in which the protrusion 10 c is provided on the lid body 10 and the raised portion 38 c is provided on the bottom surface of the rotary drum 3, thereby forming an uneven shape. It is not limited to the protrusion 10c and the raised portion 38c in order to obtain the uneven shape. For example, the concave part provided in the same form as the protrusion 10c and the raised part 38c may be used, or the lid body 10 including the lid body 10b having a concavo-convex process such as blasting on the surface may be used. Even the uneven shape configured as described above can contact the laundry in the washing step, and can apply frictional resistance to the laundry, so that the same effect as in the case of the protrusion 10c (the raised portion 38c) can be obtained.

  Moreover, the washing / drying machine of the present invention can carry out a drying process in addition to the washing, rinsing and dehydrating processes. By driving the blower fan 57 and the heater 58, the inside of the rotary drum 3 is circulated with dry air through the circulation air passage 5. In this drying process, in addition to rotating the rotating drum 3, drying air is introduced into the rotating drum 3, so that the laundry moves in a wide range within the rotating drum 3. At this time, the laundry comes into contact with the lid 10 and the bottom of the rotary drum 3. Since the protrusion 10c and the raised portion 38c are provided at the bottom of the lid 10 and / or the rotating drum 4, the laundry comes into contact with the protrusion 10c and the raised portion 38c, and the lid 10 and / or the rotating drum 3 It is pulled to the bottom side. As a result, the laundry is not entangled and easily unraveled, so that there is an effect that the laundry is not easily wrinkled during drying. Moreover, since the position of the laundry is largely changed by pulling the laundry, the laundry can be dried uniformly, and the time of the drying process can be shortened.

(Other configuration of baffle)
The operation of the baffle 33 of the present invention has been described above by the rotation control of the rotary drum 3 according to the present invention. Although the present invention has been described with reference to an example of the shape of the baffle 33 as described above, the structure of the baffle 33 according to another embodiment will be described below.

  In the present embodiment, the convex portions 34 and 36 provided on the baffle 33 are formed in a shape having a crescent-shaped cross section (notch portion), but are not limited to such a shape. On the side surface 33 a side of the baffle 33, the convex portion 34 a provided on the opening 30 side of the rotating drum 3 has a notch 35 a at a position biased toward the bottom side of the rotating drum 3 on the top side of the baffle 33. The other convex part 34b should just be the shape which has the notch part 35b in the location biased to the opening 30 side at the top part side of the baffle 33. Further, on the other side surface 33 b of the baffle 33, the convex portion 36 b provided on the bottom side of the rotating drum 3 has a cutout portion 37 b at a position that is biased toward the opening side of the rotating drum 3 on the top side of the baffle 33. The other convex part 36a should just be the shape which has the notch part 37a in the location biased to the bottom part side at the top part side of the baffle 33. In addition, what is necessary is just to determine suitably the position (location) of the notch parts 35 and 37 in the convex parts 34 and 36 according to the inclination angle of the rotating drum 3, the direction which wants to move the laundry.

  Moreover, although the form which provided the same number of convex parts 34 and 36 on both the side surfaces 33a and 33b of the baffle 33 was demonstrated, you may vary the number of the convex parts 34 and 36 for every side surface 33a. In this case, according to the rotation direction of the rotating drum 3, the moving direction of the laundry can be varied, and the cleaning performance can be improved.

  According to this embodiment, when the rotating drum 3 rotates counterclockwise (or clockwise), the laundry is moved to the opening 30 side, and the laundry is moved to the bottom side when rotating clockwise (or counterclockwise). And moved. At this time, since the rotary drum 3 is rotatably supported by the bottom slope, the laundry tends to move to the bottom side. Therefore, in order to move to the opening 30 side, the number of convex portions 34 provided on one side 33a of the baffle 33 is five, and the number of convex portions 36 provided on the other side 33b is three. That is, the number of projections 34 (or 36) provided to move in the opposite direction to the movement in the direction in which the laundry is biased, including the shape of the baffle 33 due to the rotation of the rotating drum 3, etc., The number may be larger than the number of convex portions 36 (or 34) moved in the same direction as the movement in the biased direction. As a result, the rotating drum 3 repeats forward (for example, clockwise) and reverse (for example, counterclockwise) rotation, so that the direction of movement of the laundry is efficiently switched and the replacement of the laundry is performed better.

  Further, in the present embodiment, the three baffles 33 are all formed in the same shape, but the number of the convex portions 34 and 36 may be different for each baffle 33. For example, three, four, and five can be used. In this case, the amount of laundry, the moving distance, and the like differ depending on the number of convex portions for each baffle, and it can be expected that the laundry will be moved or replaced randomly, thereby enhancing the cleaning effect.

  In addition, the convex parts 34 and 36 demonstrated providing in an equal interval in description of this embodiment. However, it is not necessary to provide them at regular intervals, and they may be provided randomly. For example, the interval between the projection 34a (or projection 36b) and the projection 34b (or projection 36a) is wider (longer) or narrower (shorter) than each interval of the projection 34b (or projection 36a). You may make it do. Moreover, you may make it the space | interval of each convex part 34 and 36 differ.

  In the above-described embodiment, the washing machine according to the present invention has been described based on the configuration applied to the washing / drying machine capable of executing the washing operation and the drying operation. However, the washing machine according to the present invention is also applicable to a washing machine that performs only a washing operation and a dryer that performs only a drying operation.

  The preferred embodiments of the present invention have been specifically described above. However, each configuration, operation, and the like can be changed as appropriate, and are not limited to the above-described embodiments.

2 Water tank 3 Rotating drum 4 Drum motor (motor)
DESCRIPTION OF SYMBOLS 10 Cover body 10c Protrusion 33 Baffle 34 Convex part 34a Convex part (1st convex part)
35 Notch (first notch)
35a Notch 35b Notch 36 Convex 36a Convex (Second Convex)
37 Notch (second notch)
38 Bottom cover 38c Raised portion 16 Operation control portion 161 CPU (control portion)
162 storage unit 164 timer

Claims (5)

A water tub having an opening for taking in and out laundry, a rotary drum rotatably provided inside the water tub and opposed to the water tub opening, and storing the laundry, and an inner peripheral surface of the rotary drum In a washing machine provided with a baffle long in the axial direction,
The baffle has a plurality of first protrusions arranged side by side in the axial length direction on one side, and a plurality of second protrusions arranged side by side in the axial length direction on the other side surface. And
The first convex portion is formed with a first notch for moving the laundry stored by rotation of the rotating drum in one direction to the opening side,
2. The washing machine according to claim 1, wherein a second notch is formed in the second convex portion to move the laundry stored by rotating the rotating drum in the other direction to the side opposite to the opening. The first notch is formed in a shape biased toward the opening side of the rotating drum,
2. The washing machine according to claim 1, wherein the second notch is formed in a shape biased to a side opposite to the opening of the rotating drum. The first convex portion close to the opening side of the rotating drum is formed in a shape in which the first notch is biased to the opposite side to the opening of the rotating drum,
The one second convex portion close to the side opposite to the opening of the rotating drum has a second notch formed in a shape biased toward the opening side of the rotating drum. Washing machine. A lid that opens and closes the opening of the water tank is provided, and an uneven portion is formed on the lid body that faces the rotating drum of the lid,
The washing machine according to any one of claims 1 to 3, wherein a concavo-convex portion is formed on a bottom portion opposite to the opening of the rotating drum. A control unit for controlling the rotation of the rotating drum;
The control unit is unidirectional or other at a first rotational speed for lifting and dropping the laundry to less than 90 degrees, and a second rotational speed for lifting and dropping the laundry to 90 degrees or more and 180 degrees or less. The washing machine according to any one of claims 1 to 4, wherein the rotary drum is rotationally controlled in a direction.