JPS59144485A - washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a washing machine that performs washing or rinsing by rotating rotary blades in forward and reverse directions.

[Prior art]

Recently, in this type of washing machine, attempts have been made to keep the rotational speed of the rotor blade low in order to reduce cloth entanglement. However, if the rotational speed of the rotor blade is lowered, the cleaning rate will decrease, so in order to obtain a predetermined cleaning rate, it is necessary to make the outer diameter of the rotor blade as large as possible.

When the large-diameter rotary blades were rotated forward and backward in a washing tub with a nearly square cross-sectional shape, the laundry was thrown around in the washing tub, causing the washing water to ripple greatly and rise above one end of the washing tub. It was discovered that the phenomenon of washing water splashing out occurs.

This phenomenon occurs noticeably when the load is less than half, regardless of the level of the washing water. Therefore, when washing and rinsing, please close the opening of the washing tub.
It has been proposed to provide a lid to prevent the washing water that has flown out of the washing tub from splashing out from the upper end of the washing tub.

However, when the fitting gap between the inner wall of the washing tub and the washing lid becomes 5IIO11 or more, the inner wall of the washing tub becomes +! The washing water that started to get hot leaked out of the washing tub through the above-mentioned fitting gap and wet the outer frame of the washer and the floor on which the washing machine was installed, so there was no point in installing a washing lid. Ta.

To solve this problem, the fitting gap should be 5 ya or less, but considering the deformation during molding of the washing tub and washing lid, the fitting gap between the inner wall of the washing tub and the washing lid should be reduced. It is difficult to reduce the distance to 0.5 m or less. .

[Purpose of the invention]

The present invention addresses the above-mentioned problems and has an extremely simple configuration in which the washing water that has risen along the inner wall surface of the washing tub during washing or rinsing is caused to fit between the inner wall of the washing tub and the washing lid. There is a washing machine that can prevent the washing machine from jumping out of the washing tub through the gap.

[Summary of the invention]

The gist of the present invention is to provide a washing tub having a substantially rectangular cross-sectional shape, a rotary blade provided at the inner bottom of the washing tub that rotates forward and backward, and a washer 1 lid covering an opening of the washing tub, In a washing machine in which the ratio between the diameter of the rotor and the depth of the washing tub is set to 0.6 or more, the inner peripheral surface of the washing tub includes:
By forming a horizontal step below the upper end of the washing tank 1 and receiving the washing lid at this step, the washing water in the washing tub can be drained during washing or rinsing. , in order to prevent it from jumping out of the washing tank.

[Embodiments of the invention]

EMBODIMENT OF THE INVENTION Hereinafter, this invention will be explained in detail based on Example drawing.

In FIGS. 1 and 2, a two-tub washing machine includes an outer frame 1 made of steel plate, a base 2 made of synthetic resin on which this outer frame 1 is placed, and a synthetic resin housed in the outer frame 1. A washing tub 3 made of synthetic resin, a water receiving tank 4 made of synthetic resin that is integrally formed with the washing tub 3 and housed within the outer frame 1, a dewatering tank 5 housed within the water receiving tank 4, and a washing tub 3. A rotation R6 provided at the center of the bottom of the tank 3, a rotary sterilization mechanism 7 that controls the rotation of the rotary blade 6, a washing motor 8 that serves as a drive source for the rotary blade 6, and a drive source for the dehydration tank 5. It is equipped with a dewatering motor 9 and an operation panel box 10 made of synthetic resin that is removably provided above the outer frame 1 using the upper opening edges of the washing tub 3 and the water receiving tub 4.

The upper end opening of the water receiver 4114 is covered by a dehydration cover 11 having a dehydration inlet 10a. As shown in FIG. 1, the top opening of the washing tub 3 has a saucer shape and a
A transparent laundry lid 12 and a laundry outer lid 13 covering the laundry lid 12 are provided. On the dehydration cover 11, as shown in FIG. 1, a dehydration inner lid 14 and a dehydration outer lid 15 covering the dehydration inner lid 14 are provided. The laundry lid 12, the outer laundry lid 13, the inner dehydration lid 14, and the outer dehydration lid 15 are all made of synthetic resin.

The dehydration inner lid 14 has a dehydration tank 5 when the dehydration outer lid 15 is opened.
The slit 14a is set to a size large enough to confirm the presence or absence of rotation. The washing lid 12 has a recess 12a,
The introduction port 12b provided in the center of the recess 12a and the recess 1
A water sprinkling hole 12C provided on the entire surface of 2a and a rib 12d provided in the recess 12a are provided. The introduction port 12b is connected to the washing lid 12.
In the closed state, it is located directly above the hollow cylindrical body 19 of the rotor blade 6. The bottom surface of the recess 12a is gently inclined toward the introduction port 12b. The washing lid 12 and the dehydration inner lid 14 are
It should be able to be opened/closed and detached freely.

The washing outer lid 13 and the dehydrating outer cover 15 are detachable.

The operation panel box 10 houses rib components that constitute an electric circuit that controls the washing motor 8 and the like. A water supply port 10a is formed on the upper surface of the operation panel box 10 to which a water supply hose connected to a water faucet or the like can be attached. A water passage ioc is provided in the operation panel box 10 so that water entering from the water supply port 10a flows out from the outlet 10b provided at the lower front of the display panel box 10.

The shapes of the outlet 10b and the recess 12a are determined so that the water flowing from the outlet lOb flows onto the recess 12a. The water flowing from the outlet 10b is made to spread over the entire surface of the recess 12H.

The upper surface of the washing lid 12 is located below the upper surface of the washing tub 3 so that water overflowing from the recess 12a does not spill outside the outer frame 1.

A shaft portion 12e is provided on the right and left side walls of the washing lid 12.

Form 12f into 11 pieces. The shaft portion 12e is rotatably fitted into a U groove portion 3b formed in the upper end flange 3a of the washing tub 3. The shaft portion 12f is connected to a U formed on the dehydration cover 11.
It rotatably fits into the groove portion 11b.

A raised wall 12g formed on the outer peripheral end of the washing lid 12 is placed on a stepped portion 3c formed on the inner wall of the washing tub 3. Stepped section 3
The width of C should be 0.5 mm or more. The rising wall 12g is
It is formed on the entire outer peripheral edge of the washing lid 12.

It is preferable that the stepped portion 3C be substantially horizontal.

The stepped portion 3C is formed around the entire circumference of the washing tub 3 except for the rear wall surface. In this embodiment, the stepped portion 3C is integrally formed on the front wall surface and the left side wall surface of the washing tub 3, An eaves-like portion 11C formed integrally with the dehydration cover 11 is used as a stepped portion 3. A stopper 3dl12i is formed in the U groove portions 3b and llb to prevent the shaft portions 12e and 12f from coming off upward. (The diameter d of the portion 12e is set smaller than the dimension t of the gap formed between the U-groove portion 3b and the stopper 3d.

The dewatering cover 11 is provided with a lid close to the U-groove portion 11b. When the washing lid 12 is opened, the protrusion 12j formed at the rear end of the washing lid 12 elastically deforms a portion of the dehydration cover 11 and moves as shown by the dashed line in FIG. maintain the condition.

The washing lid 12 has an opening 1 through which a water overflow port 3e provided on the inner wall of the washing tub 3 can be directly viewed when the washing lid 12 is closed.
Form 2k. At the center of the front end of the washing lid 12, there is a handle 1.
form 6. The handle 16 washes the washing lid 12 at 7 of 443.
It has a function as a hook to be hung on the lunge 3a.

A bank part 12/ is provided at the front end of the washing lid 12 to prevent water from overflowing into the washing lid 12 even if the water from the outlet 10b flows at a high flow rate.The 5° overflow opening 3e is equipped with an overflow filter device. 17 is detachably provided. The overflow filter device 17 has a water level display 17a. The size and position of the opening 12 are determined so that the water level display 17a can be clearly seen from the opening 12k when the washing lid 12 is closed.

As shown in FIG. 13, the laundry outer lid 13 has a transparent plate 13a.
has. The transparent plate 13a is connected to the opening 13b of the washing outer lid 13.
K. Immediately after molding the washing outer lid 13, it is press-fitted and fixed.

As shown in FIG. 14, the dehydration outer lid 15 includes a transparent plate 15a.
has. The transparent plate 15a has an opening 1 s of the dehydration outer lid 15.
b [, Immediately after the dehydration outer lid 15 is molded, it is press-fitted and fixed.

The cross-sectional shape of the tip 441i3 is as shown in FIG.
It is rectangular. The ratio a/b of the horizontal dimension a and the depth dimension inside the rod washing tank 3 is set to 0.9 to 1.1.

Radius of curvature of side wall corner part of washing tub 3 '1 e r2
+r3 + r4 is set in the range of 50 to 150 gardens. Three radii of curvature r1. r2. When setting r3 to 100 questions or less, set the radius of curvature r4 of the remaining sheets to 120 to 1.
Set to 40■. Each side wall of the washing tub 3 has an arcuate curved surface that projects outward.

The radius of curvature of this curved surface is ψ of 1000 to 4000 mm.
Set in box a. Between the side wall and the bottom of the washing tub 3 is the first
The radius of curvature rI+ shown in FIG. 6 is connected by a curved surface set in the range of 10 m to 50 m. The draft angle θ of the side wall of the washing tub 3 is 1/
Set to 90 or less.

Specific examples of the washing tub 3 and the water receiving tub 4 are shown in FIGS. 18 and 19. In this example, the horizontal dimension a is 380+
a, the depth dimension is 390, and the radius of curvature rl is 9011!
l111 radius of curvature r2 is 120m, radius of curvature r3 is 90m
In order, the radius of curvature r4 is set to 90, the radius of curvature r is set to 20, the radius of curvature is set to 1500+n+, and the draft angle θ is set to 1/200.

The vertical dimension from the inner bottom of the washing tub 3 to the top of the washing tub 3 is 5.
Set to 10m.

The inner bottom of the washing tub 3 is formed with a disc-shaped recess 3f in which the rotary blade 6 is installed. At the center of the four parts 3f, there is formed a circular truncated protrusion 3g that protrudes upward. A ring-shaped U-groove 31 is formed in the recess 3f to guide residual water to the drain port side 3h. For U6#, 3i, the remaining water is on the drain side 3h
It is stubborn so that it flows easily. In the vicinity of the drain side 3h, a U groove 3j, which serves as a residual water passage connecting the U groove 31 to the drain side 3h, is larger in depth than the U groove 31, and the remaining water flows. For ease of use, place the drain port side 3 b
1 verse is slanted around 1.

A large number of radial lips 3 and a large number of ring-shaped lips 3t are provided on the outer bottom of the washing tub 3. At the upper left end of the washing tub 3,
Recess 3 for hooking the washing outer lid 13 onto the washing tub 3
form m. With the hook part (not shown) provided on the laundry outer lid 13 pulled in this recessed part 3m,
The hook part is prevented from protruding inward from the side wall of the washing tub 3 so that even when the washing tub 2 is opened and closed, there is no problem in the opening/closing operation.

A large number of lips 3n projecting inward are formed on the remaining three side walls of the washing tub 3 excluding the right side wall.

Seventeen lips 3n are provided on each side wall. Rip 3n is
Width: 511O+1, pitch: 15, and height: 320
mm, and the cross-sectional shape is arcuate. An attachment boss 3p is formed at the intersection of the radial lip 3 and the ring-shaped lip 3t.

As shown in FIGS. 19 to 25, the rotary blade 6 includes a disk-shaped blade body 18 and a protruding body (hereinafter referred to as a hollow cylinder) 19 integrally provided on the central upper surface of the blade body 18. It is equipped with The wing body 18 and the hollow face piece 19 are made of synthetic resin.

As shown in FIG. 19, the wing body 18 has three main glBa arranged radially when viewed from above. Wing body 18
A plurality of protrusions 18C are formed in the fan-shaped portion 18b. A smaller protrusion than the protrusion 18C may be formed between the protrusion 18C. A plurality of lips 18d are formed on the back surface of the main wing 18a. On the back side of the protrusion 18C,
Form one reply ise.

Four auxiliary wings 19a are formed on the outer periphery of the hollow cylindrical body 19. Two of the auxiliary g19a are connected to the kill 18. The remaining ailerons 19a, as shown in FIG.
It ends almost in the middle of the hollow cylinder.

A mounting boss 19b and a communication hole 19C are formed in the lower part of the hollow cylindrical body 19. A large number of water intake holes 19d are formed on the outer periphery of the hollow facepiece 19. Hollow body 19 from water intake hole 19d
The water that has entered inside passes through the communication hole 19C and the training surface of the blade body 18 due to the pump action of the back surface of the blade body 18, and is washed away.
j Return to A tank 3.

A lint filter device 2o as shown in FIGS. 26 to 28 is installed inside the hollow cylinder 19. .

The lint filter device is a filter m 20 a (!
:, a fitting part 20b that fits into the hollow cylinder 19, a holder part 20C that connects the fitting part 20b and the filter part 20a, and a cap 2 that is attached to the upper part of the fitting part 20b.
1. Fitting part 20b and holder part 20C
The frame is made of synthetic resin and is made of one piece. The filter part 2oa is configured to be elastically coupled to the holder part 20C and can be removed from the holder part 20C as needed. The cap 21 having the water passage hole 21a is made of synthetic resin and is configured to be elastically connected to the holder part 20C and to be detachable from the holder part 20C as necessary. .

The outer diameter of the main body 18 of the rotor blade 6 is 277B. The hollow cylindrical body 19 has an inner diameter of 53 fins and a height (wing body 1
8) is 338 mm. main gl 8
A has a width of 20 mm and a maximum height of 40 mm. The ailerons 19a have four widths and a maximum height of 19 mm.

The rotation control mechanism 7 is fixed to the external bottom surface of the washing tub 3 using screws 22, as shown in FIG. The rotation control mechanism 7 includes a gear reduction mechanism 23, an output shaft 24 of the gear reduction mechanism 23, an input shaft 25 of the gear reduction mechanism 23, and a driven pulley 2 fixed to the input shaft 25.
6, and a drive pulley 2 fixed to the rotating shaft of the washing motor 8.
7, and a belt 28 attached to the driving pulley 27 and the driven pulley 26. A mounting boss l'lb for the rotor blade 6 is attached to the upper end of the output shaft 24.

As shown in FIGS. 29 to 30, the gear reduction mechanism 23 includes a first gear 23a fixed to the upper end of the input shaft 25, and three second gears 23b that mesh with the first gear 23a.
A pinion 23C is provided integrally with the second gear 23b, and a third tooth 23d is engaged with the pinion 23C and is fixed to the end of the output shaft 240. The I gear 23a, the second gear 23b1, the pinion 23C, and the third gear 23d are housed in a southeast case 23e made of aluminum diequist. Remove the aluminum die-cast lid 23f from the gear case 23e using screws 23g17C. Let's go. The gear case 236 includes a shaft 24a of the output shaft 24,
A bearing cylinder 23h for attaching the gear case 24b and four attachment legs 23i for attaching the gear case 23e to the outer bottom surface of the washing tub 3 are integrally formed. Washing tub 5 and bearing tube 23
Sealing with h is done using an O-ring and rubber adhesive.

A bearing sleeve 23j for mounting the bearing 25a of the input shaft 25 is integrally formed on the lid body 23f.

The rotation of the washing motor 8 is controlled by the rotation control mechanism 7.
The speed is reduced to a range of 7 to 1/11, and then transmitted to the rotor blade 6. The rotational speed of the rotary blade 6 is io.

Set in the range of rpm to 250 rpm. The washing motor 8 uses a single-phase induction motor with a four-pole capacitor star run. The washing motor 8 is fixed onto the base 2 via a vibration isolating rubber 29.

As shown in FIG. 1, a hollow ring-shaped fluid balancer 5a filled with saline is provided at the upper end of the dehydration tank 5. The rotation shaft 5b of the dehydration tank 50 is directly connected to the rotation shaft of the dehydration motor 9 through the coupling 30. At the bottom of the water receiving tank 4, three bellows are provided which serve both as a vibration-proof bearing for the rotating shaft 5b and as a water seal. The dewatering motor 9 includes an anti-vibration spring 32 and an anti-vibration rubber tube 3.
3 Support it on the base 2 for vibration isolation. The dehydration tank 5 is made of synthetic resin, and is
m, and rotates at 1700 r- at 60 Hz.

The overflow filter device 117 is detachably attached to the overflow port 3e formed by recessing a part of the inner wall of the washing tub 3. A telescopic overflow hose 35 is attached to the lower part of the overflow strainer 34, as shown in FIG. A drain valve body 36 whose central part passes through the shell and forms part of the overflow passage is attached below the overflow hose 35. The drain valve body 36 comes into contact with and separates from the upper surface of a drain port 37 provided at the outer bottom of the washing tub 3. When draining water, the water in the washing tub 3 is drained by separating the drain valve body 36 from the drain port 37. A spring 39 is provided above the drain valve body 36. ,
By lowering the operating rod 38 using this spring 39, the drain valve body 36 is brought into pressure contact with the drain port 37.

As shown in FIG. 31, the box part of the overflow filter device 17 consists of three components: an overflow box cover 40, a partition plate 41, and a wooden strainer 34. The overflow box cover 40 to be attached is made of a sweet acid resin such as polypropylene and has a structure shown in FIGS. 32 to 39.

The overflow box cover 40 consists of a cover part 42 along the inner wall of the washing tub 3, and a bag-shaped overflow strainer moving part 43 located behind the cover part 42. The overflow strainer moving part 43 has a function of holding the partition plate 41. The cover part 42 and the overflow strainer moving part 43 are integrally molded. An opening 44 having a semicircular shape when viewed from the front is formed in a part of the overflow strainer moving part 43.

At the top of the cover part 42 of the overflow box cover 40, there is a 2.
A bag-shaped open handle 45 is provided. The handle 45 has a structure that allows you to pinch it by bending your fingers inward. A lower part of the cover part 42 is integrally provided with a flat plate-shaped insertion part 46 which is lowered into the washing tub 3.

A large number of small holes 47 are provided on the left and right sides of the cover part 42 of the overflow box cover 40. The small hole 47 is an overflow strainer.
Even if the overflow strainer 34 is clogged with lint or the like and is closed, and water does not flow out from the overflow strainer 34, the strainer 34 has a function of guiding water to the overflow port 35.

As shown in FIG. 33, the overflow box cover 40 has partition plate guide grooves 48 in the vertical direction on both sides of the overflow filter moving part 43 at the rear of the cover part 42 for vertically sliding the partition plate 41. The top of the parallel 0° partition plate guide grooves 48 extends in a trench near the top of the drought filter moving part 43.

Two elastic claws 42a projecting rearward are integrally formed on both sides of the handle 45 of the cover part 42 of the flood box cover 40. The elastic claw 42a has a function of detachably attaching the overflow box cover 40 to the hot water port 3e of the wash tg4*3. There is a third plate on the surface of the overflow box cover 40.
As shown in FIGS. 4, 38 and 39, the opening 44
Two protruding bins 49 are provided on both sides 1i11. The two protruding bins 49 are arranged at a narrow distance from the width of the partition plate 41 and support the partition plate 41 and the overflow strainer 34. , the protruding pin 49 has the role of a stopper for fine vertical movement of the partition plate 41 by making moderate contact with the wavy portion 50a provided on the partition plate main body 50 of the partition plate 41.

The partition plate 41 made of polypropylene is shown in FIGS. 40 to 47.
As shown in the figure, it consists of a curved partition plate main body 50 having corrugated parts 50a on both sides, and an overflow strainer holding part 51 formed integrally with this partition plate main body 50.

On the front side of the overflow strainer holding part 51 of the partition plate 41,
A protruding lip 52 is formed into which the curved surface of the overflow strainer 34 is inserted and held. A ring-shaped protruding lip 53 for supporting the overflow hose 35 is provided at the intermediate portion of the overflow strainer holding portion 51 of the partition plate 41. The protruding rib 53 is formed by hollowing out the rear part and forming an opening through which overflowing water flows out of the central part.

On the upper part of the overflow strainer holding part 51 of the partition plate 41,
A U-shaped recess 54 is formed. The overflow strainer 34 is detachably attached to the partition plate 41 through a recess 54 and a protruding lip 52. Small recesses 55 are formed on both sides of the inner front surface of the recess 54 of the partition plate 41. Kuhomi part 5
5, the projection 34a of the overflow strainer 34 is fitted into the overflow strainer 34. The partition plate 41 is inserted along the partition plate guide groove 48 from below the same plane of the overflow box cover 40 and is attached to the overflow box cover 40 so as to be slidable in the vertical direction.

The overflow strainer 34 made of polypropylene consists of a slit-shaped strainer portion 56, a U-shaped curved surface portion 57, and a knob 58, as shown in FIGS. 48 to 54.

Slit-shaped strainer part 56 of hot water strainer 34
The width of the curved surface portion 57 is slightly smaller than the width of the overflow strainer moving portion 43 of the hot water box cover 40. The curved surface portion 57 of the oil/water strainer 34 is connected to the overflow box cup (-
It is shaped so as to cover the lower end of the overflow strainer moving part 43 when it is located at the lowermost end of the overflow strainer moving part 43.

Slit-shaped strainer part 56 of overflow strainer 34
is approximately parallel to the water flow and approximately 5
It has 13 elongated ribs 56a with an inclination of c. The ribs 56a make the cross-sectional area of the front part 56b smaller than the cross-sectional area of the rear part 56C, and the rear part 56C is smaller than the front part 56b.
make it even higher. A concave portion 59 provided at the rear of the slit-shaped strainer portion 56 is formed to prevent water overflow from the partition portion 41.
It is installed so as to surround the recess 54 of the holding part 51.

A knob 58 of the overflow strainer 34 is provided at the bottom of the slit-shaped strainer portion 56. Overflow strainer-34
An arrow part 57a is provided at the lower part of the curved surface part 57, which serves as a guide for knowing the height of the washing water surface.

The washing motor 8 is operated by a timer 6 as shown in FIG.
0 causes forward and reverse rotation in an extremely short cycle. The timer 60 includes a timer motor 61 made of a synchronous motor, at least two cam switches C1 and C2, and a main switch M8. Manual changeover switch S
No. 1 performs gentle washing and gentle rinsing by cutting off the power to one cam switch C1.

The reversal period of the washing motor 8 is 0.
It may be selected within the range of 6 seconds to 2.0 seconds, non-energization 0.4 seconds to 3.0 seconds, and energization in the reverse direction 0.6 seconds to 2.0 seconds. In this embodiment, as shown in FIG.
Set to “-reverse 0.95”.

The dehydration motor 9 is controlled by a dehydration timer 62, as shown in FIG. , a lid switch 63 is connected in series to the dehydration timer 62. The lid switch 63 is turned off when the dehydration inner lid 14 is opened. 64 is a buzzer, 6
5, 66, and 67 are capacitors for preventing noise.

Figure 57 shows the ratio a/of the horizontal dimension a and the depth dimension of the washing tub 3.
A characteristic curve of the movement of the laundry in the washing tub 3 (hereinafter referred to as cloth movement) is shown. As can be seen from FIG. 57, as the ratio a/b increases, the movement of the cloth becomes worse. In particular, ratio a
/ l) becomes larger than 1.1, Pt in Figure 15
The laundry begins to accumulate in the area l Pt + Q, t l Q2, and the movement of the laundry becomes extremely slow.

FIG. 58 shows the radius of curvature r1 of the side wall corner portion of the washing tank 3.
A characteristic curve of e r2 * r3 v r4 and cleaning rate is shown. As can be seen from Fig. 58, the radius of curvature r
When 1 s '2 + r3 + r4 becomes 150 mg or more, the laundry only revolves around the rotary blade 6, and the laundry is less likely to be passed up and down.
Cleaning rate drops rapidly. Radius of curvature rl, r2,
r,,3.

When r4 is less than 501 m, the laundry is pushed into the corner of the side wall of the washing tub 3 and the movement of the laundry becomes poor, resulting in a sharp drop in the cleaning rate. Horizontal dimension a of washing tub 3
By setting the depth and depth in the range of 380 to 440 positions, the characteristics shown in FIG. 58 can be changed.

FIG. 59 shows characteristic curves of the rotation angle of the rotary blade 6, cleaning rate, cloth damage, and cloth entanglement. The experimental conditions were: rotor blade 6
Ratio D between the diameter of the tool body 18 and the depth of the washing tank 3
/b in the range of 0.6 to 0.8, the ratio a/l) of the horizontal dimension a to the depth dimension of the washing tub 3 in the range of 0.9 to 1.1, and the rotation speed of 860 rI to 250 r1ml. Set to a range of The reversal period of the rotary blade 6 is: forward rotation 0.6 seconds to 2.0 seconds, fixed stop 0.5 seconds to 3.0 seconds - reverse rotation 0.6 seconds ~
2. ．． Set in the range of θ seconds. As can be seen from FIG. 44, when the rotation angle of the rotary blade 6 is less than 360 degrees (one rotation), the laundry hardly sways, and the cleaning rate drops sharply. When the N rotation angle of the rotary blade 6 becomes 360° or more, the cleaning rate increases rapidly. Fabric damage and fabric tangle increase as the rotation angle increases, and increase rapidly when the rotation angle exceeds 1080 degrees.

FIG. 60 shows characteristic curves of the rotational speed of the rotary blade 6, cleaning rate, cloth damage, and cloth entanglement. Ratio 1)/b, ratio a/
l) and the rotation period of the rotary blade 60 are set in the same manner as in FIG. 59. The cleaning rate decreases significantly when the rotation speed is lower than 10,100 ft, and when the rotation speed is 250 ft.
If it exceeds rfa, fabric damage will progress rapidly. rotor blade 6 to 1
In order to rotate the laundry and water at a low speed of 00rllll to 250r-, approximately 2
A large torque of 00Kf/second is a must. If an 8-pole or 12-pole motor is used to obtain this large torque, the reduction ratio of the gear reduction mechanism 17 will become smaller and the shaft output torque of the motor will have to be increased, resulting in a larger motor. , and the Kuruma-gori becomes larger. When a 4-pole capacitor motor is used, the reduction ratio of the gear reduction mechanism 17 can be set to 1/11 to 1/7, and the shaft output torque of the motor is 28 to 18 kg.σ. The washing motor 8 can be made smaller and lighter by using a four-pole capacitor motor. Washing motor 8 50H2 using a 4-pole capacitor motor
If the number of rotations at
At 0H2, the rotation speed of the washing machine motor 8 is 1674 rpm, and the rotation speed of the rotary blade 6 is 152r- to 239f-.

In the above configuration, in order to carry out a washing operation, the washing outer lid 13 is removed, the washing lid 12 is opened, the laundry is thrown into the washing tub 3, and the detergent is thrown into the hollow cylinder 19. .

Next, after closing the washing lid 12, the water that has entered the water supply port 10a is allowed to flow out from the outflow port 11b to the washing lid 12, and the water is injected into the hollow cylindrical body 19 through the inlet 12bi, and water is sprayed. It flows down through the hole 12C toward the inner bottom of the washing tub 3 in a Java-like shape.

When the water level of the water supplied to the washing tub 3 is rising, the washing lid 12
Water level display 1 of overflow filter device 17 through opening 12 of
By directly looking at 7a, it can be accurately and easily determined even with the washing lid 12 closed.

Once the water has accumulated in the washing tub 3 to a specified water level, the water supply operation is stopped and the timer 61 is activated.
The cleaning operation 11a is performed by rotating the wafer in the forward and reverse directions.

The detergent put into the hollow cylindrical body 19, together with the water injected into the hollow cylindrical body 19, passes through the communication hole 19C from the outer periphery of the back surface of the υ blade body 18 to the washing tub 3 by the pumping action of the rotary blade 6. It squirts into the inner bottom of the body.

When the time set by the timer 32 has elapsed, the forward and reverse rotation of the rotary blade 6 is stopped, and the water in the washing tub 3 is drained 3. After draining the water in the washing tub 3, the washing lid 12 is opened.
Replace the laundry into the dehydration tank 5. Thereafter, the dehydration tank 5 is rotated for 2 to 3 minutes to centrifugally separate water with a high detergent concentration contained in the laundry. By sprinkling water from above the dehydration tank 5 for a minute after the dehydration tank 5 is stopped or just before the dehydration tank 5 is stopped,
Furthermore, after reducing the detergent concentration in the water contained in the laundry, the dehydration process is performed by rotating the dehydration tank 5 again for 1 to 2 minutes.
Repeat more than once. After completing this dehydration work, return to the water supply port 10.
The rinsing operation is carried out for 5 to 7 minutes by accumulating water through the hollow cylinder 19 to the standard water level in the washing tub 3 and rotating the rotary blade 6 in forward and reverse directions. The rinsing work time is set by a timer 32. When water is supplied at the start of the rinsing operation, water can be supplied to the desired water level accurately and easily by supplying water through the opening 12 of the washing lid 12 while observing the water level display 17a of the water-side filter device 17.

Wash after rinsing? 4Open Todoroki 12 and wash tub 3
The laundry you took out from inside? It is put into the dehydration tank 5. After that, by rotating the dehydration tank 5 in one direction at high speed,
Dehydration work is carried out. The dehydration work time is set by the dehydration timer 62.

During the rinsing operation, if the water supply port 108 is turned up, the water will fall into the washing tub from the water sprinkling hole 12G of the washing lid 12 in a Java-like manner, and the bubbles floating on the water surface of the washing tub 3 can be efficiently extinguished. can.

For water supply during washing and rinsing work, use the washing lid 1.
2 is closed, but the water level display 17a is opened with the water level display 17a closed.
2, the rising axis of the water level is easy to understand, and washing and rinsing operations are not performed without knowing that water is overflowing from the overflow port 3e of the washing tub 3.

When too much water is supplied onto the washing lid 12, the water also falls from the opening 12k into the washing tub 3, thereby preventing water from overflowing from the washing lid 12. If a gap is provided so that water can also fall from around the handle 16 of the lid 12, it is possible to further prevent water from spilling out from the washing machine 12.

In this embodiment, so-called overflow rinsing is adopted in which the rotation s6 is rotated in the forward and reverse directions while water is being supplied, and water exceeding a specified water level is allowed to overflow from the overflow port 3e.

When the rinsing operation is started, the laundry acts like a pump blade, and the bubbles floating on the water surface are pushed from the center of the water surface to the outer periphery of the water surface, making it easier to flow into the overflow port 3e. This phenomenon becomes more pronounced when the ratio of the washing water to the laundry, that is, the bath ratio (t/Ky), is around 10 (to the extent that the laundry barely protrudes from the water surface). Even if the rotational speed of the rotating JK 6 is kept within 250 rpm, if the rotary blade 6 is rotated forever in one direction, a downward vortex will be generated near the center of the water surface, and bubbles floating on the water surface will gather at the center of the water surface. According to experiments, it has been found that if the rotor 6 is reversed so that the number of rotations of the rotor 6 is within 5 times, the bubbles floating on the water surface move toward the outer periphery of the water surface.

In order to smoothly guide bubbles floating on the water surface into the overflow port 3e, it is preferable that the height of the water surface and the height of the overflow correspond to each other. In this regard, the overflow filter device 17 on the Honji Mountain side is designed to allow the overflow height to be adjusted, so that bubbles floating on the water surface can efficiently flow out into the overflow port 3e no matter which specified water level is reached. 3. Furthermore, 1. Since the overflow port 3e is formed by recessing a part of the inner wall of the washing tub 3, the bubbles pushed out from the center of the water surface to the outer periphery of the water surface are absorbed into the overflow port 3e. It flows easily and can eliminate bubbles floating on the water surface in a shorter time.

A preferred embodiment of the invention is shown in the following table. Experimental results according to the optimum embodiment are shown in Figs. 61 to 67.As shown in Figs. 61 and 62, according to this embodiment, both at rated load and 60% load, , it is possible to reduce the tangling rate of conventional 9 cloth by half. The transfer of the washed material from the washing tank 3 to the dewatering tank 5 can also be carried out quickly because there is less tangle of cloth.

Furthermore, as shown in FIG. 63, according to this example, the width of the cleaning competition ratio is smaller than that of the conventional method, and it can be seen that uneven washing has been improved. However, as shown in FIG. 64, according to this embodiment, the conventional method has a
Even if the washing time is increased by only 2 minutes, the same washing rate as before can be achieved.

Furthermore, according to this example, as shown in FIG. 65, the removal of bubbles during rinsing can be accelerated by 40%, and the rinsing time can be shortened.

Furthermore, according to this embodiment, as shown in FIGS. 66 and 67, the damage to the cloth can be significantly reduced compared to the conventional method. Note that FIG. 66 shows experimental data using a bath towel, and FIG. 67 shows experimental data using a canvas.

In this embodiment, since the washing lid 12 is closed during washing and rinsing operations, even if the water in the washing tub 3 is scattered by rotating the rotary blade 6 in the forward or reverse direction, the water will be removed from the washing lid. 12
This prevents the water from jumping out of the washing tub 6.

Furthermore, even if washing or rinsing is performed with a dog with less than half the load and the washing water in the washing tub 3 is splashed strongly, the horizontal step 3C prevents the washing water from reaching the washing lid 1.
The fitting gap between the washing tub 2 and the washing tub 3 prevents it from flowing out of the washing tub. According to experiments, the vicinity of the stepped portion 3C was only slightly damaged.

As described above, according to the present invention, the large-diameter rotor blade can be moved inside the washing tub while the load is less than half by simply allowing the washing lid to be received by the stepped portion formed on the inner circumferential surface of the washing tub. It is possible to provide a washing machine which can prevent washing water from splashing out of the washing tub even if the washing water in the washing tub is splashed violently by rotating the washing water in the forward and reverse directions.

[Brief explanation of the drawing]

1 to 45 show an embodiment of the present invention, in which FIG. 1 is a longitudinal sectional view, FIG. 2 is a partially cutaway perspective view, FIG. 3 is an enlarged sectional view of the main part, and FIG. The figure is a top view of the main parts, Figure 5 is an enlarged top view of the left mounting part of the inner lid of the washing machine, and Figure 6 is the X of the vJS diagram.
Fig. 7 is an enlarged cross-sectional view of the main parts of the right attachment part of the inner lid of the washing machine.
Figure 8 is an enlarged top view of the right attachment part of the laundry inner lid, Figure 9 is a sectional view taken along line A-A in Figure 4, Figure 10 is a bottom view of Figure 4, and Figure 10 is a bottom view of Figure 4.
Figure 1 is a sectional view taken along line B-B in Figure 4, Figure 12 is a right side view of Figure 4, Figure 13 is a sectional view of the main part of the washing outer lid, and Figure 14 is a sectional view of the main part of the dehydration outer lid. Figures 15 and 16 are explanatory diagrams of the shape of the washing tub, Figure 17 is a top view of the washing tub and water tank, Figure 18 is a sectional view taken along line C-C in Figure 17, and Figure 19 is the rotor blade. 20 is a sectional view taken along the line DD in FIG. 19, FIG. 21 is a sectional view taken along the line E-E in FIG. 19, and FIG.
F sectional view, Fig. 23 is a bottom view of the rotor blade, Fig. 24 is a front view of the rotor blade, Fig. 25 is a GC sectional view of Fig. 22,
Figure 6 is a sectional view of the main parts of the lint filter device, Figure 27 is a sectional view of the cap part, Figure 28 is a top view of the cap part,
Fig. 29 is a -i plane view of the rotation control mechanism, Fig. 30 is a bottom view of the reduction gear mechanism, Fig. 31 is an enlarged sectional view of the overflowing eye portion, Fig. 32 is a surface view of the overflow box cover, and Fig. 33 The figure is a V-■ cross-sectional view in Figure 32, Figure 34 is a back view of the overflow box cover, Figure 35 is a Vl-Vl cross-sectional view in Figure 32,
36 is a sectional view taken along line VIf--■ in FIG. 32, FIG. 37 is a top view of FIG. 32, and FIG. 38 is a sectional view taken along line-■ in FIG.
Fig. 39 is a bottom view of Fig. 32, Fig. 40 is a surface view of the partition plate, Fig. 41 is a top view of Fig. 40, Fig. 42 is a bottom view of Fig. 40, and Fig. 43 is a view of Fig. 40. XX sectional view of, No. 44
The figure is the Xl-Xl sectional view of Fig. 40, ? 445 Figure Ham
40 Figure 46 is the left side view of Figure 40, Figure 47 is the X1-xnt cross section of Figure 40, Figure 48 is the front view of the overflow strainer, 49 is a sectional view taken along xiv-x■ of FIG. 48, FIG. 50 is a top view of FIG. 40, and FIG. 51 is a sectional view taken along line xv-xv of FIG.
2 is a back view of FIG. 48, FIG. 53 is a left side view of FIG. 48, FIG. 54 is a sectional view taken along line XVI-XVI of FIG.
Figure 5 is a drowsiness circuit diagram, Figure 56 is a cam switch program, Figure 57 is a characteristic curve diagram of cloth movement and ratio a/l),
Fig. 58 is a characteristic curve diagram of cleaning and the radius of curvature of the corner part of the side wall of the washing tub, Fig. 59 is a characteristic curve diagram of cloth clinging rate, cloth damage rate, cleaning ratio, and rotation angle of the rotor blade, and Fig. 60 is a characteristic curve diagram of cloth Characteristic curve diagrams of entanglement rate, cloth damage rate, cleaning ratio and rotational speed of the rotor blade, and FIGS. 61 to 67 are diagrams showing experimental results according to the optimum embodiment. 3... Washing tub, 6... Rotating blade, 12... Washing lid,
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Claims (1)

[Scope of Claims] 1. A washing tub having a substantially rectangular cross-sectional shape, a rotary blade provided at the inner bottom of the washing tub that rotates forward and backward, and a washing lid covering an opening of the washing tub, the rotary blade The ratio between the diameter of the washing tub and the depth of the washing tub is set to about 0.6, and on the inner circumferential surface of the washing tub, there is a
A washing machine characterized in that a substantially horizontal stepped portion is formed, and the washing lid is received at this stepped portion. 2. The washing machine according to claim 1, wherein the stepped portion is formed around the entire circumference of the washing tank 1, excluding the rear wall surface. 3. The washing machine according to claim 1, wherein a part of the horizontal stepped portion is formed by a dewatering cover of a dehydrating tank provided adjacent to the washing tub.