JP4934697B2 - Washing dryer and washing machine - Google Patents

Description

  The present invention relates to a washing and drying machine that performs washing and drying of clothes and the like and a washing machine that performs washing of clothes and the like.

A conventional vertical electric washing machine has an outer tub for storing washing water suspended through an anti-vibration mechanism in an outer frame, an inner tub rotatably provided in the outer tub, and a bottom portion in the inner tub. A rotary blade provided rotatably, a drive mechanism for selectively rotating the inner tub and / or the rotary wing, a water supply mechanism for supplying wash water into the outer tub, and a drainage for draining the wash water in the outer tub A mechanism, a washing water level detecting means for detecting the washing water level in the outer tub, and a control device for controlling the drive mechanism, the water supply mechanism, the drainage mechanism, and the like are provided.
The electric washing dryer with a drying function is a dry air circulation that sucks out the air in the outer tub from the bottom of the outer tub, cools and dehumidifies it, heats the dehumidified air, and blows it into the inner tub. It is a configuration with a system attached.

FIG. 6 is a perspective view showing a rotary blade 100 of a conventional electric washing machine or electric washing / drying machine.
As shown in FIG. 6, a rotary blade 100 of a conventional electric washing machine (electric washing dryer) has a shallow ball-like center recessed shape. A large number of holes 100u1 are formed in the wall surface 100u of the rotary blade 100 so that no water film is formed between the laundry and the wall surface 100u. Further, four convex stirring blades 100u2 are formed radially from the center of the wall surface 100u (see Patent Document 1).

JP 2002-360990 A (paragraphs 0014, 0015, FIG. 3 etc.) Japanese Patent Laying-Open No. 2005-218663 (paragraph 0022, FIG. 2, FIG. 3, etc.)

By the way, a preferable amount of washing water in the above-described electric washing machine (electric washing dryer) is generally set automatically in accordance with the amount of laundry.
In a general agitating type electric washing machine (electric washing and drying machine), the amount of washing water when washing a standard amount of laundry is about 60 liters. About 180 liters of washing water is consumed in one washing.
Therefore, there is a problem that the amount of water used for washing by the electric washing machine is large.

  Further, the conventional electric washing machine (electric washing dryer) accumulates a lot of washing water in the inner tub, and reciprocally rotates the rotary blade 100 having the convex protruding stirring blade 100u2 shown in FIG. This is a method of washing by washing the washing water into which the laundry is put. Thus, since the conventional rotary blade 100 is hooked and washed using the convex stirring blade 100u2 having a large protrusion, there is a problem that laundry such as clothing is easily damaged.

Therefore, as described in Patent Document 2, a rotary blade having a shape different from that of the rotary blade 100 shown in FIG. 6 is used as an electric washing machine (electric washing dryer) that reduces water consumption and fabric damage. An electric washing machine (electric washing dryer) of tapping and push-washing has appeared.
In view of the above circumstances, an object of the present invention is to provide a washing / drying machine and a washing machine with improved washing performance and drying efficiency with a small amount of water used.

In order to achieve the above object, the washing and drying machine according to the first aspect of the present invention includes an outer tub that is supported by vibration isolation and stores washing water and rinsing water, and a laundry that is loaded and rotatably supported in the outer tub. Laundry provided with an inner tub, a rotary blade disposed on the inner bottom surface of the inner tub and driven to rotate, and a drying function for blowing dry air into the laundry containing moisture after dehydration in the inner tub It is a dryer, and a plurality of independent convex portions are formed on the rotary blades, and the multiple convex portions are alternately arranged radially from the central portion to the outer peripheral portion of the rotary blades. In addition, the outer peripheral portion side is disposed at a lower density than the central portion side of the rotor blade, and the convex portion is formed in a symmetric or substantially symmetric shape with respect to the center thereof, and is circular or circular in top view having an outer surface having a curvature. It is almost circular and the convex part is a rotor blade in top view. The distance between the centers of adjacent convex parts whose distance from the center to the center of the convex part is Y1 is X1, and the distance between the centers of adjacent convex parts whose distance from the center of the rotor blade to the center of the convex part is Y2. When is X2,
X1 / Y1 = X2 / Y2
The distance between the convex portions is made longer as the distance from the center of the rotary blade to the center of the convex portion becomes longer .

A washing machine according to the second aspect of the present invention includes an outer tub that is supported by vibration isolation and stores washing water and rinsing water, an inner tub that is loaded with laundry and rotatably supported in the outer tub, The washing machine includes a rotating blade that is disposed on the inner bottom surface of the tub and is driven to rotate. The rotating blade is formed with a large number of independent protruding portions , and the protruding portions are The rotor blades are arranged alternately in a radial pattern from the center to the outer periphery of the rotor blade, and the outer peripheral portion side is arranged with a lower density than the center portion of the rotor blade, and the convex portion is symmetrical or substantially symmetric with respect to the center. And has a circular or almost circular shape in a top view having an outer surface having a curvature, and the convex portion is adjacent to the center of the rotor blade from the center of the convex portion in a top view when the distance is Y1. The distance between the centers of the projections is X1, and the distance from the center of the rotor blade to the projections When the distance between the centers of adjacent convex portions whose distance to the center is Y2 is X2, the distance from the center of the rotary blade to the center of the convex portion is included, including the case where X1 / Y1 = X2 / Y2. The longer the distance, the longer the distance between the convex portions .

  According to the present invention, a washing / drying machine and a washing machine with improved washing performance and drying efficiency can be realized.

It is an external appearance perspective view which shows the washing-drying machine of embodiment concerning this invention. It is AA line principal part sectional drawing of FIG. 1 which shows the structure of the washing-drying machine of embodiment. It is the perspective view which looked at the rotary blade of embodiment from diagonally upward. (a) is the BB sectional drawing of FIG. 3, FIG.4 (b) is CC sectional view taken on the line of FIG. (a) is a top view which shows arrangement | positioning of the beat convex part of the rotary blade of embodiment, (b) is the FF sectional view enlarged view of the FF line of Fig.5 (a). It is a perspective view which shows the conventional rotary blade.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is an external perspective view showing the washing / drying machine 1 of the embodiment, and FIG. 2 is a cross-sectional view taken along the line AA of FIG.
<Exterior of washing dryer 1>
In the washing / drying machine 1 of the embodiment shown in FIG. 1, a housing 1k is formed by a side plate 2a formed of a steel plate, a lower base 2b formed of a synthetic resin, and a top cover 3 formed of a synthetic resin. Has been.
The top cover 3 shown in FIG. 2 has a laundry entry / exit 3a such as clothes at the center, and an outer lid 4 is provided for opening and closing the laundry entry / exit 3a. In FIG. 2, the closed state of the outer lid body 4 is indicated by a solid line, and the open state of the outer lid body 4 is indicated by a two-dot chain line.

<Top cover 3>
The top cover 3 in which the laundry entry / exit 3a is formed is configured by combining a plurality of members as necessary, and is fitted so as to cover the upper part of the washing / drying machine 1 and is attached to the side frame (not shown) with an attaching screw. )).
The laundry entrance / exit 3a formed in the top cover 3 is configured to be opened and closed by an outer lid body 4 rotatably attached to the top cover 3 by a base hinge h1 (see FIG. 2).

As shown in FIG. 2, a powder detergent charging box 3 d for charging powder detergent is formed on the front edge portion of the top cover 3 on the left side of the contact surface 3 b of the outer lid body 4. The bottom surface of the powder detergent charging box 3d is formed so that the powder detergent charged smoothly flows down to the powder detergent charging port 13.
As shown in FIG. 1, a switch mounting surface 3c arranged on the front side of the top cover 3 has a push button type power switch s1 for turning on / off the power and an opening / closing operation for the outer lid body 4. An outer lid opening / closing instruction switch s2 and a detergent amount detection instruction switch s3 are mounted.

<Outer lid 4>
The outer lid 4 that opens and closes the laundry entry / exit 3a shown in FIG. 2 is made of synthetic resin, and can freely rotate around the base hinge h1 so that the laundry entry / exit 3a of the top cover 3 can be opened and closed (see FIG. 2). A rear lid 4b (see FIG. 1) provided in the direction of arrows α1 and α2), and a front lid 4a that is flexibly connected to the front edge of the rear lid 4b by an intermediate hinge h2 (see FIG. 2). Have.
The outer lid body 4 is electrically or manually operated to open and close the laundry entrance 3a.

A handle is formed on the front lid portion 4a of the outer lid body 4 shown in FIG. 1 by denting the rear end portion of the front lid portion 4a so that the user inserts a fingertip when the outer lid body 4 is manually opened and closed. A portion 4a2, a handle lid portion 4a1 elastically supported by a torsion spring so as to close the opening of the handle portion 4a2, and a front side of the handle lid portion 4a1. An operation display panel unit 4a3 is provided.
In FIG. 2, the structure of the handle lid portion 4a1, the handle portion 4a2, and the operation display panel portion 4a3 is omitted.

  As shown in FIG. 1, the operation display panel 4 a 3 is disposed on the upper surface of the front lid portion 4 a of the outer lid body 4, and the operation button bu operated mainly with the outer lid body 4 closed and the washing / drying machine 1. A display panel P that displays the operation state is connected to a panel control circuit board (not shown). The panel control circuit board is connected to a main control board, a power control board, etc. (not shown) via a bus line.

<Opening / closing of the outer lid 4>
The electric opening / closing drive mechanism that electrically opens and closes the outer lid body 4 shown in FIG. 1 drives the rear lid portion 4b with an opening / closing drive motor using the base hinge h1 (see FIG. 2) as a fulcrum (see FIG. 1). 2 (see arrows α1 and α2 in FIG. 2), and the front lid 4a is driven around the intermediate hinge h2 (see FIG. 2), and the front lid 4a and the rear lid 4b are folded (two points in FIG. 2). An open / close operation is performed between a closed state (see a solid line in FIG. 2) and a closed state (see a solid line in FIG. 2) in which the front lid portion 4a and the rear lid portion 4b are spread and flattened.

Alternatively, instead of this configuration, the rear lid portion 4b and the front lid portion 4a are opened / closed by being bent / extended by an open / close drive motor so as to be in an open / closed state at the position of the intermediate hinge h2 (see FIG. 2). You may comprise as follows.
For the opening / closing control of the outer lid body 4, an outer lid full-opening detection sensor and an outer lid full-closing detection sensor (not shown) for detecting the full-open / full-closed state of the outer lid body 4 are provided. Yes.

On the other hand, when the user manually opens and closes the outer lid body 4, when the user presses the handle lid portion 4a1 with the fingertip, the handle lid portion 4a1 rolls backward to insert the fingertip into the handle portion 4a2. Then, by grasping the handle portion 4a2 and raising and lowering the front lid portion 4a of the outer lid body 4, the outer lid body 4 is opened and closed.
The electric opening / closing drive mechanism that opens and closes the outer lid body 4 takes into account the form of the opening / closing drive motor so as not to cause a large mechanical load resistance when the user manually operates the outer lid body 4 to open / close. It is desirable to interpose a clutch mechanism in the transmission system.

<Outer tank 5>
As shown in FIG. 2, in the case 1 k of the washing / drying machine 1, four outer tanks 5 for storing washing water are engaged with and suspended from the corner plates provided at the four upper corners of the case 1 k. It is supported by a suspension member (not shown), and is arranged vertically in the center of the washer / dryer 1.
The suspension member includes an anti-vibration mechanism having an elastic material such as a spring and a damping mechanism due to the viscosity of a fluid such as air. The outer tub 5 is supported in an anti-vibration manner through this anti-vibration mechanism, and the whirling motion at the start of the dehydration operation is suppressed.

The outer tub 5 is formed of a synthetic resin in a bottomed cylindrical shape that is long in the axial direction. The outer tub 5 is formed with an air trap 5a for detecting the water level on the side wall at the lower portion thereof, and is connected to a pressure-sensitive water level detection sensor c2 which is a water level detecting means via an air tube c1, and has a drainage function at the bottom. An exhaust port 5b is provided. A washing / dehydrating drive device 10 is attached to the outside of the bottom of the outer tub 5 via a steel plate attachment base 18.
In the outer tub 5, a laundry 19 such as clothes is placed, and an inner tub 6 in which washing, rinsing, dehydration, and drying are performed is concentrically provided rotatably.

<Outer tank upper cover 9>
As shown in FIG. 2, the upper opening end of the outer tub 5 in which the inner tub 6 is accommodated has an inner garment inlet 9 a on the outer tub so as to cover the gap between the outer tub 5 and the inner tub 6. A cover 9 is attached.
The inner garment insertion port 9a of the outer tub upper cover 9 is covered with an unillustrated inner lid so as to be freely opened and closed, but the explanation of the inner lid is omitted here.

  The outer tub upper cover 9 has water spouts 11 for spraying water circulated into the inner tub 6 that is opened toward the inner tub 6 and circulated during the washing process, and drying air into the inner tub 6 during the drying process. A jet port 12 for jetting is attached. In addition, the detergent inlet 13 and the water supply port 14 are attached to the outer tank upper cover 9 so as to open toward the gap between the inner tank 6 and the outer tank 5. The detergent inlet 13 is connected to the powder detergent inlet box 3d through the bellows tube j1.

<Inner tank 6>
The inner tub 6 disposed in the outer tub 5 is a washing and dewatering tub, and is formed in a bottomed cylindrical shape that is long in the axial direction using a stainless steel plate.
A small hole 6a for water flow and ventilation is formed in the peripheral wall of the inner tub 6, and the fluid moves to the upper edge of the small tub 6a in the direction opposite to the bias of the laundry 19 during the high-speed rotation dehydration process. The fluid balancer 6b which suppresses the vibration by the bias | inclination of is provided. The inner tub 6 rotates at high speed during the dehydration process, and centrifugal dehydration is performed in which moisture contained in the laundry 19 is separated from the laundry 19 by centrifugal force and discharged from the small holes 6a of the dewatering holes.

In the center of the inner bottom surface portion in the inner tub 6, a rotary blade 30 is provided rotatably for washing, rinsing and the like by moving the laundry 19 up and down and stirring. The rotary blade 30 is rotationally driven by the washing / dehydrating drive device 10, and performs washing, rinsing, and the like by repeating forward / reverse rotation. In the drying operation, the rotor blade 30 is dried by repeating forward / reverse rotation.
The structure of the rotary blade 30 will be described in detail later.

<Laundry dehydration drive device 10>
The washing / dehydrating drive device 10 has a built-in drive motor, an electromagnetically operated clutch mechanism, and a planetary gear reduction mechanism using a reversible rotation type capacitor phase-separated single-phase induction motor, an inverter-driven motor, and the like. By controlling, the stirring drive mode in which the rotor blade 30 is repeatedly rotated in the forward and reverse (reciprocating) directions while the inner tank 6 is stationary, and the dehydration drive mode in which the inner tank 6 and the rotor blade 30 are integrally rotated in the same direction. And a drive function for selectively executing.

<Washing water circulation during the washing process>
Next, a configuration will be described in which washing water is discharged from the inner tub 6 and supplied and circulated again during the washing process.
The drainage / exhaust port 5b of the outer tub 5 shown in FIG. 2 is connected to the water inlet of the drainage electromagnetic valve 16 and the water inlet of the electric circulation pump P1 via the bellows pipe j2 and the internal pipe k1.
The drain electromagnetic valve 16 and the electric circulation pump P1 are attached to a strength member (not shown) in the housing 1k, and the water outlet of the drain electromagnetic valve 16 is connected to an external drain hose 17. The water outlet of the electric circulation pump P1 is connected to the water spout 11 via an internal pipe k3 in which the internal pipe k2, the bellows pipe j3, and the lint filter f1 are detachably installed.

The drainage / exhaust port 5b, the bellows pipe j2, the internal pipe k1, the electric circulation pump P1, the internal pipes k2, k3, the bellows pipe j3, and the water spout 11 constitute a washing water circulation mechanism.
In the washing process in which the washing water is circulated, in addition to the washing water contained in the laundry 19, a minimum water level (a water level having a height of 1/2 from the inner bottom surface of the inner tub 6 from the extent that the rotary blade 30 sinks). ) Washing water is applied and washing is performed.

<Configuration of drying mechanism>
A water-cooled dehumidifying mechanism 20 for dehumidifying the air containing moisture absorbed from the laundry 19 in the drying process with the cooling water flowing on the outer surface of the water-cooled dehumidifying plate 22 is dehumidified on the rear side of the housing 1k. is set up.
The basic structure of the water-cooled dehumidifying mechanism 20 is to suck out the humid air in the outer tub 5 in the drying process from the drainage / exhaust port 5b, and to cool and dehumidify with cooling water flowing on the outer surface of the water-cooled dehumidifying plate 22 to reduce the absolute humidity. It heats after making it fall, and comprises the dry air circulation system which blows in into the inner tank 6 from the upper direction.

The water-cooled dehumidifying mechanism 20 includes a water-cooled dehumidifying air passage 21 that is an air passage for drying air connected from the drainage / exhaust port 5b through the bellows tube j4.
A water-cooled dehumidifying plate 22 is installed in the water-cooled dehumidifying air passage 21, and a yarn waste filter f2 for removing yarn waste contained in the drying air, an electric blower 23 for blowing the drying air, and after dehumidification And an electric heater Hp for heating the drying air.

Specifically, the water-cooled dehumidifying air passage 21 is provided with a rising air passage 21a extending upward from the bellows tube j4 with the drainage / exhaust port 5b as an inlet, and the water-cooling dehumidifying plate 22 is provided in the rising air passage 21a. Is installed. Then, a descending air passage (not shown) that is folded back from the upper end portion of the ascending air passage 21a and extends downward is provided, and the lint filter f2 is detachably installed in the folded portion. A humidity sensor (not shown) that is sensitive to the humidity of the air flowing through the down air passage is installed in the down air passage. An intake port of the electric blower 23 is connected to a lower end portion of the descending air passage, and an ascending air passage (not shown) extending upward from the exhaust port of the electric blower 23 is provided.
The tip of the ascending air path is connected to the above-described fume port 12 through the air heating pipe k4 and the bellows pipe j5. In the air heating tube k4, an electric heater Hp such as a PTC heater for heating the circulating air for drying in the drying process is provided.

<Rotating blade 30>
Next, the configuration of the rotary blade 30 shown in FIG. 2 will be described in detail.
FIG. 3 is a perspective view of the rotary blade 30 as viewed obliquely from above. 4A is a cross-sectional view taken along the line B-B in FIG. 3, and FIG. 4B is a cross-sectional view taken along the line C-C in FIG. 3 showing the highest portion of the big wing 31.
The rotor blade 30 shown in FIG. 3 has a large diameter so as to partially or entirely cover the inner bottom surface portion of the inner tub 6, and is formed in a substantially circular shape when viewed from above.
As shown in FIGS. 3 and 4A, the rotary blade 30 is formed so as to gradually increase from the peripheral flat portion 30s to the central portion 30o.

<Big Wing 31 of Rotating Blade 30>
As shown in FIGS. 3 and 4B, the rotary blade 30 includes a first big wing 31a that is formed so as to gradually increase from the central portion 30o to the outer peripheral portion, and from the outside of the first big wing 31a. Two big wings 31 having second big wings 31b formed gradually higher after being slightly lower from the first top 31a1 of the first big wing 31a as it goes to the outer periphery are formed at two symmetrical positions.

  In other words, the big wing 31 of the rotary blade 30 is formed with a second big wing 31b that decreases from the second top portion 31b1 having the highest outer peripheral portion to the linear portion 31b2 as it goes from the outer peripheral portion to the central portion of the rotary blade 30. Furthermore, the highest first top portion 31a1 of the first big wing 31a is located at a position slightly higher than the lowest end position of the linear portion 31b2, and the first big wing 31a gradually decreases from the first top portion 31a1 to the central portion 30o. Is formed.

The two big wings 31 shown in FIG. 3 are formed higher than the other regions of the rotating blade 30 as ridge-shaped protruding portions in which the protruding portions are long and continuous in the radial direction from the central portion 30o of the rotating blade 30 outward. Has been.
As shown in FIG. 4B, the highest first apex 31a1 of the first big wing 31a is formed to have a height dimension t1 = 8 mm from an extension line of the linear portion 31b2, for example.
By providing the first big wing 31 a on the center side of the big wing 31, the movement of the laundry 19 in the radial direction of the rotary blade 30 is created, and the movement of the laundry 19 positioned at the center of the rotary wing 30 is activated. Is done.

That is, the rotation of the rotary blade 30 causes the movement of the laundry 19 between the center of the rotary blade 30 and the outer periphery, and the outer periphery of the rotary blade 30 of the laundry 19 in the center of the rotary blade 30 appears. The replacement with a certain laundry 19 is promoted, and the entire laundry 19 can be washed uniformly.
The overall washing operation of the rotary blade 30 will be described. By the rotary operation of the rotary blade 30, an upward force is repeatedly applied to the laundry 19 placed on the rotary blade 30 in the entire big wing 31 to push the rotary blade 30. The washing force is generated, and the laundry 19 placed on the rotary blade 30 is lifted and dropped by the entire big wing 31 to perform tapping washing.
Further, the first big wing 31a and the second big wing 31b formed on the big wing 31 are effectively washed by replacing the laundry 19 in the radial direction of the rotary blade 30.

Here, although the case where two big wings 31 are formed is illustrated in the embodiment, the number of the big wings 31 may be appropriately selected.
As shown in FIG. 3, it is most desirable to form two big wings 31 on the rotary blade 30.

Moreover, in the big wing 31, although the case where one 1st big wing 31a was formed in the center side of the 2nd big wing 31b was illustrated, you may form two or more.
As shown in FIG. 4B, the number of first big wings 31a in the big wing 31 is preferably one.
As shown in FIG. 3, the two regions of the peripheral flat portion 30 s sandwiched between the two big wings 31 of the rotor blade 30 are gradually formed lower as the distance from the big wing 31 forming the ridge-shaped convex portion increases.

<Miniwing 32 of the rotary blade 30>
In the region of the two peripheral flat portions 30 s sandwiched between the two big wings 31, two ridge-shaped miniwings 32 that gradually increase from the central portion 30 o to the outer peripheral portion are formed. 32, each peripheral flat portion 30 s sandwiched between the two big wings 31 is divided into three.
Here, the mini wings 32 are smaller and smaller than the big wings 31.

By the action of the mini wing 32, the laundry 19 positioned on the peripheral flat portion 30s of the rotary blade 30 is moved up and down by the rotation of the rotary blade 30, and the movement of the laundry 19 is activated.
In the peripheral flat portion 30 s between the mini wings 32 and the peripheral flat portion 30 s between the mini wings 32 and the big wings 31, a water film is prevented from being formed between the upper surface of the laundry 19 and the rotary blade 30. Therefore, a large number of pores 30a are formed.

<Beat convex part 33 of rotary blade 30>
Further, in the peripheral flat portion 30s between the mini wings 32 and the peripheral flat portion 30s between the mini wings 32 and the big wings 31, as shown in FIG. 3 and FIG. A plurality are formed alternately in a radial manner from the central portion 30o to the outer peripheral portion.
Each beat convex portion 33 has a diameter of about 30 mm and a height of 2.5 mm, and is circular or substantially circular in a top view, and has a curved outer surface (in the sectional view taken along the line BB in FIG. 3). It is formed in a flat shape in FIG.

As described above, the beat convex portion 33 has a shape that is symmetrical or substantially symmetric with respect to the center thereof, and the outer surface has a circular shape or a substantially circular shape in a top view with a curvature. The beat convex portion 33 acts on the article 19 without any bias, and the laundry 19 can be washed smoothly regardless of the angle of the beat convex portion 33, so that it can be washed evenly.
In addition, the beat convex portion 33 has a shape having an outer surface with a curvature, so that an excessive load is not applied to the laundry 19 and the damage to the laundry 19 is suppressed, and the load torque of the drive motor of the rotor 30 is reduced. The power consumption can be reduced.

In this way, a large number of beat convex portions 33 are formed in the peripheral flat portion 30 s of the rotary wing 30 in a dotted manner, thereby giving a shiatsu effect to the laundry 19 dropped from the big wing 31. Also, the laundry 19 can move in the radial direction of the inner tub 6, the laundry 19 can be rotated around each beat convex portion 33, and the movement of the laundry 19 is activated.
Therefore, the cleaning ability of the rotary blade 30 for the laundry 19 is improved.

In addition, when the rotor blade 30 shown in FIG. 3 is rotated, the outer peripheral side of the rotor blade 30 has a higher peripheral speed than the central portion 30o side, so that the density of the beat convex portions 33 is different between the outer peripheral side and the central portion 30o side. When provided with the same density, the flatness of the rotating blade 30 in the rotating state is lower on the outer peripheral side of the rotating blade 30 than on the central portion 30o side due to the peripheral speed.
Therefore, the beat convex portion 33 on the outer peripheral side of the rotary blade 30 is formed with a lower density than the central portion 30o side. In other words, the beat convex portion 33 on the central portion 30 o side of the rotor blade 30 is formed with a higher density than the outer peripheral side.

Here, the shorter the pitch of the beat convex portion 33 is, the closer the surface is to the flat surface. Therefore, the effect of the beat convex portion 33 is diminished. On the other hand, if the pitch of the beat convex portion 33 is too long, the flat surface is similarly approached. Therefore, the effect of the beat convex portion 33 is diminished.
Therefore, as shown in FIG. 3, the beat convex portions 33 are arranged alternately to maintain an appropriate distance between the beat convex portions 33.

<Arrangement of the beat convex portion 33 of the rotary blade 30>
Next, a desirable arrangement of the beat convex portion 33 in the rotary blade 30 will be described.
FIG. 5A is a top view showing the arrangement of the beat projections 33 of the rotary blade 30 shown in FIG. 2, and FIG. 5B is an enlarged cross-sectional view taken along the line FF of FIG. 5A. .
The beat convex portion 33 is more influenced by the peripheral speed due to the rotation of the rotary blade 30 as it is arranged on the outer peripheral portion of the rotary blade 30, and has an effect of amplifying the vertical movement unique to the rotary blade 30.

As shown in FIG. 5A, the beating protrusions 33 are arranged concentrically around the rotary blade 30 as shown in FIG.
With respect to the two beat convex portions 33 adjacent to each other concentrically, the distance between the centers of the adjacent beat convex portions 33 whose distance from the center 30 o 1 of the rotary blade 30 to the center 33 o of the beat convex portion 33 is Y 1 is X 1, When the center-to-center distance between adjacent convex portions whose distance from the center 30o1 of the wing 30 to the center 33o of the beat convex portion 33 is Y2 is X2,
X1 / Y1 = X2 / Y2
When this relationship is established, it is most effective for the vertical movement of the laundry 19.
As described above, the longer the distance from the center 30 o 1 of the rotary blade 30 to the center 33 o of the beat convex portion 33, the longer the distance between the beat convex portions 33, which is effective for the vertical movement of the laundry 19. An effect is obtained.

  Alternatively, when the adjacent beat convex portion 33 has a curvature such as a spherical surface and the diameter of the beat convex portion 33 that is circular or substantially circular in top view is b, the center of the beat convex portion 33 in top view is The four or more beat convex portions 33 are arranged on the circumference of the diameter 2b, and there are no centers in the top view of the four or more beat convex portions 33 on the circumference of the diameter 2b. In addition, the beat convex portion 33 can be configured so that the center of the beat convex portion 33 in the top view does not exist inside the circle having the diameter 2b.

Further, as shown in FIG. 5 (b), the height of the beat convex portion 33 is h (see FIG. 5 (b)), and the maximum height H of the rotary blade 30 (reference plane (internal) shown in FIG. 4 (b)). (Equivalent to the inner bottom surface of the tank 6) to the top 31b1 of the second big wing 31b)
h / H = 1/40 to 4/40
It is desirable that
Further, as shown in FIG. 5A, when the diameter of the rotary blade 30 in the top view is D and the diameter of the beat convex portion 33 in the top view is b (see FIG. 5B),
15 <D / b <16
In this case, the most effective cleaning and drying effect is exhibited.

From the above, as an example of the dimensions related to the beat convex portion 33, for example, X1 = 155.5 mm, Y1 = 43.43 mm, X2 = 200.5 mm, Y2 = 56 mm, h = 2.5 mm, H = 80 mm , D = 470mm, b = 30mm
In the case of, good cleaning and dry finishing effects were obtained.
In addition, as the shape of the beat convex portion 33, as shown in FIGS. 3 and 4A, the case of a circular shape or a substantially circular flat shape in the top view is illustrated, but the shape of the beat convex portion 33 is illustrated. In addition, spherical beat convex part 33, elliptical egg-shaped beat convex part 33 in top view, a combination of curved surfaces having various curvatures, and a combination of curved surfaces and planes having various curvatures The shape of the beat convex portion 33 such as the beat convex portion 33 having a different shape can be selected as appropriate.

<Summary>
In the washing / drying machine 1 shown in FIG. 1, a large convex portion (first big wing 31a of the big wing 31) on the rotary blade 30 in the inner tub 6 of the washing and dewatering tub (see FIGS. 3 and 4 (b)). And a small convex portion (beat convex portion 33) (see FIGS. 3 and 4A) can improve the cleaning power of the laundry 19 such as clothes and reduce washing unevenness.
In addition, the laundry 19 can be efficiently replaced by the laundry 19 such as clothing with the large and small convex portions (the first big wing 31a of the big wing 31 (see FIG. 3) and the beat convex portion 33 (see FIG. 3)). The amount of water used in the washing process can be reduced by improving the washing effect, and the drying process can be shortened by improving the drying efficiency of the laundry 19.

Of the large and small convex portions on the rotary blade 30, a large number of small convex portions (beat convex portions 33) are provided. The arrangement, size, and quantity of the small convex portions (beat convex portions 33) are based on the relationship with the cleaning effect and the short-time effect.
By rotating the rotary blade 30, the laundry 19 slides on the rotary blade 30 and hits a small convex portion (beat convex portion 33), so that the laundry 19 is moved up and down and rotated in small increments. Yes. Moreover, it is possible to obtain the effect of washing it with acupressure by making the laundry 19 finely hit a small convex part (beat convex part 33).

Since the two large protrusions of the rotor blade 30 (the first big wing 31a of the big wing 31 (see FIGS. 3 and 4B)) are provided near the center of the rotor blade 30, they are located near the center of the rotor blade 30. Thus, the laundry 19 such as clothing that is difficult to hit the small convex portion (beat convex portion 33) can be flipped up to effectively replace the laundry 19 near the outer periphery of the rotary blade 30.
As described above, by providing the large and small convex portions (the first big wing 31a of the big wing 31 and the beat convex portion 33) on the rotary blade 30 in the inner tub 6 of the washing and dewatering tub, the washing performance and the drying efficiency are improved. An improved washing / drying machine 1 can be realized.

In addition, by providing the large and small convex portions (the first big wing 31a of the big wing 31 and the beat convex portion 33), compared with the case where the convex portion is not provided, the washing performance is conventionally improved by the test using the contaminated cloth based on the standard. It was confirmed that the ratio was improved by 10 to 20%.
In the above embodiment, the case where the first big wing 31a of the big wing 31 and the beat convex portion 33 are formed on the same rotor blade 30 is exemplified, but only the first big wing 31a of the big wing 31 or the beat convex portion is illustrated. Of course, only 33 may be formed on the rotor blades.
In the above embodiment, the washing / drying machine 1 that performs washing / drying has been described as an example. However, the present invention can be effectively applied to a washing machine that does not have the above-described drying function and includes the rotary blade 30. Of course.

1 Washing / drying machine 5 Outer tub 6 Inner tub 19 Laundry 20 Water-cooled dehumidification mechanism (drying mechanism)
30 Rotor 30o1 Center of rotor 31 Big wing (large wing)
31a First big wing (ridge-like convex part, first ridge-like convex part)
31a1 first apex 31b second big wing (second ridge-shaped convex part)
31b1 second top (top)
33 Beat convex part (convex part)
33o center (center of convex part)
b Diameter D Diameter h Beat convex height (convex height)
H Height of rotor blade

Claims (10)

An outer tub that is supported by vibration isolation and stores washing water and rinsing water, an inner tub that is loaded with laundry, is rotatably supported in the outer tub, and is driven to rotate. A washing / drying machine comprising a rotating blade and a drying function for blowing hot air into the laundry containing moisture after dehydration in the inner tub,
A large number of independent convex portions are scattered on the rotor blade ,
The plurality of convex portions are alternately arranged radially from the central portion to the outer peripheral portion of the rotor blade, and the outer peripheral portion side is arranged at a lower density than the central portion side of the rotor blade,
The convex portion is formed in a symmetric or substantially symmetric shape with respect to the center thereof, and is circular or substantially circular in a top view having an outer surface having a curvature, and
The convex portion is a top view,
The distance from the center of the rotating blade to the center of the convex portion is Y1, and the distance between the centers of adjacent convex portions is X1,
When the distance between the centers of the adjacent convex portions where the distance from the center of the rotor blade to the center of the convex portion is Y2 is X2,
X1 / Y1 = X2 / Y2
Including the case of
The washing / drying machine characterized in that the distance between the convex portions is increased as the distance from the center of the rotary blade to the center of the convex portion is increased . When the diameter D in the top view of the rotor blade is b and the diameter in the top view of the convex portion is b,
15 <D / b <16
The washing / drying machine according to claim 1 , wherein: In the region other than the convex portion formed on the rotor blade, the height gradually increases from the central portion to the peripheral portion along the radial direction of the rotor blade, and is higher in the ridge shape than the other regions of the rotor blade. A wing is formed,
The large wing portion is formed with a ridge-shaped convex portion lower than the top portion on the center side from the highest top portion of the outer peripheral portion,
The washing / drying machine according to claim 1 , wherein the convex portion is formed lower than the large wing portion. A first ridge-shaped convex portion that gradually increases from the central portion to the outer peripheral portion along the radial direction of the rotary wing in a region other than the convex portion formed on the rotary wing, and the first ridge-shaped convex portion A second ridge-shaped convex portion that gradually increases toward the outer peripheral portion toward the outside of the portion, and a ridge-shaped large wing portion that is higher than other regions of the rotor blade is formed,
The washing / drying machine according to claim 1 , wherein the convex portion is formed lower than the large wing portion. When the height of the convex portion is h, and the maximum height from the inner bottom surface of the inner tub of the rotor blade is H,
h / H = 1/40 to 4/40
The washing / drying machine according to claim 1 , wherein: An outer tub that is supported by vibration isolation and stores washing water and rinsing water, an inner tub that is loaded with laundry, is rotatably supported in the outer tub, and is driven to rotate. A washing machine comprising a rotating wing,
A large number of independent convex portions are scattered on the rotor blade ,
The plurality of convex portions are alternately arranged radially from the central portion to the outer peripheral portion of the rotor blade, and the outer peripheral portion side is arranged at a lower density than the central portion side of the rotor blade,
The convex portion is formed in a symmetric or substantially symmetric shape with respect to the center thereof, and is circular or substantially circular in a top view having an outer surface having a curvature, and
The convex portion is a top view,
The distance from the center of the rotating blade to the center of the convex portion is Y1, and the distance between the centers of adjacent convex portions is X1,
When the distance between the centers of the adjacent convex portions where the distance from the center of the rotor blade to the center of the convex portion is Y2 is X2,
X1 / Y1 = X2 / Y2
Including the case of
The washing machine according to claim 1, wherein the longer the distance from the center of the rotor blade to the center of the convex portion, the longer the distance between the convex portions . When the diameter D in the top view of the rotor blade is b and the diameter in the top view of the convex portion is b,
15 <D / b <16
The washing machine according to claim 6 , wherein: In the region other than the convex portion formed on the rotor blade, the height gradually increases from the central portion to the peripheral portion along the radial direction of the rotor blade, and is higher in the ridge shape than the other regions of the rotor blade. A wing is formed,
The large wing portion is formed with a ridge-shaped convex portion lower than the top portion on the center side from the highest top portion of the outer peripheral portion,
The washing machine according to claim 6 , wherein the convex part is formed lower than the large wing part. A first ridge-shaped convex portion that gradually increases from the central portion to the outer peripheral portion along the radial direction of the rotary wing in a region other than the convex portion formed on the rotary wing, and the first ridge-shaped convex portion A second ridge-shaped convex portion that gradually increases toward the outer peripheral portion toward the outside of the portion, and a ridge-shaped large wing portion that is higher than other regions of the rotor blade is formed,
The washing machine according to claim 6 , wherein the convex part is formed lower than the large wing part. When the height of the convex portion is h, and the maximum height from the inner bottom surface of the inner tub of the rotor blade is H,
h / H = 1/40 to 4/40
The washing machine according to claim 6 , wherein:

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