JPH105491A - Washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase a circulation amount of a washing liquid by taking a washing liquid inside a washing tub into a pump room and pumping the washing liquid in a washing machine for circulating and washing a washing liquid by a pump action of a pulsator. . SOLUTION: A pulsator 24 is provided on the bottom of a washing and dewatering tub 3.
Are arranged rotatably, and the lower blade 2 of the pulsator 24 is
5, a pump chamber 9 is provided on the outer periphery of the pump chamber 9, and a circulating water channel 7 is provided from the pump chamber 9 to the upper side of the washing and dewatering tub 3. A nozzle 10 is provided. The pulsator 24 has a water inlet 27 from the upper surface to the pump chamber 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a washing machine for circulating and washing a washing liquid by a pump action of a pulsator.

[0002]

2. Description of the Related Art Conventionally, a washing machine rotates a laundry in a washing and dewatering tub by rotating the laundry through water or by directly contacting the laundry with a pulsator. Therefore, there is a problem that the laundry being washed comes into direct contact with the pulsator and the laundry is damaged. The inventors have proposed a washing machine as shown in FIG. Hereinafter, the configuration will be described.

As shown in the figure, a water receiving tub 1 includes a washing and dewatering tub (washing tub) 3 in which a pulsator 2 is rotatably arranged at the bottom, and is suspended on a washing machine outer frame 5 by a suspending rod 4. I have lowered it. A plurality of circulating water channel covers 6 are attached to the inner surface of the washing and dewatering tub 3 to form a plurality of independent circulating water channels (water channels) 7 with the washing and dewatering tub 3. A lower blade 8 is integrally provided on the back surface of the pulsator 2, and a pump chamber 9 formed on the outer periphery of the lower blade 8 communicates with a plurality of circulation water channels 7.
A nozzle 10 opened toward the inside of the washing / dewatering tub 3 is provided above the plurality of circulation water channels 7.

A porous body 12 having a large number of holes 11 is detachably provided above the pulsator 2 so as to cover the pulsator 2.
In addition, the pulsator 2 is dynamically separated and attached. The motor 13 is connected to the pulsator 2 or the washing and dewatering tub 3 via a V-belt 14 and a speed reduction mechanism / clutch 15.
Drive. The drain valve 16 drains the washing liquid in the washing and dewatering tub 3, and the water supply valve 17 supplies water to the washing and dewatering tub 3. A lid 18 is provided on the upper part of the washing and dewatering tub 3. 19 is a control device.

[0005] In the above configuration, the laundry 20 is divided into the porous bodies 1.
When the pulsator 2 is placed on the pulsator 2 and the pulsator 2 is rotated, a substantially heart-shaped water flow 21 is generated, and at the same time, a waterfall-like washing liquid 22 is discharged from the discharge port 10, and the laundry 20 is washed by the two water flows. Therefore, there is no direct contact between the laundry 20 and the pulsator 2, and even delicate clothes such as blouses and sweaters that have been difficult to wash up to now,
It is now possible to wash without breaking or losing shape. On the other hand, if the porous body 12 is not set, it can be used as a general washing machine for directly washing the laundry 20 with the pulsator 2.

[0006] By applying the washing liquid from above, the washing liquid can be passed through and washed without moving the laundry. The greater the flow of the washing liquid, the greater the force with which the washing liquid acts on dirt.

[0007]

However, in the washing machine having the above structure, the washing liquid is taken in from the lower side of the pulsator 2 and is pumped up.
3, the water level difference between the inside of the washing and dewatering tub 3 is generated.
For this reason, a force that hinders water pumping works due to the water pressure. Then, there is a limit to the amount of washing liquid pumped by the pulsator 2 at one time with respect to the rotation speed of the pulsator 2.

Since the motor 13 uses an induction motor from the viewpoint of cost and durability, the rotation speed of the motor 13 is substantially constant, so that the amount pumped by the pulsator 2 at one time is substantially constant. Therefore, it has not been easy to increase the circulation amount and increase the effect of washing.

Since the rotation speed of the motor 13 is substantially the same, the water flow 21 generated by the pulsator 2
22 is the same water flow every time, and since the water flow loses randomness, the washing liquid passing through the laundry 20 flows only at the same place, and there is a possibility that uneven washing may occur.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to increase the circulation amount of the washing liquid by taking the washing liquid inside the washing tub into a pump room and pumping the same.

[0011]

According to the present invention, a pulsator is rotatably disposed on the bottom of a washing tub, and a pump chamber is provided on the outer periphery of the lower blade of the pulsator. A water channel is provided from the room to the upper side of the washing tub, and a nozzle is provided at an opening facing the inside of the washing tub above the water channel. The pulsator has a water inlet from the upper surface to the pump chamber.

[0012] Thus, the washing liquid inside the washing tub is also taken into the pump chamber through the water inlet of the pulsator and is pumped up, so that the circulation amount of the washing liquid can be increased.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is directed to a washing tub, a pulsator rotatably disposed on the bottom of the washing tub, and a pump provided on the outer periphery of the lower blade of the pulsator. Room, a water passage provided from the pump room to the upper side of the washing tub, and a nozzle provided at an opening facing the inside of the washing tub above the water passage, the pulsator is provided from the upper surface to the pump room. A water inlet is provided, and the washing liquid inside the washing tub can be taken into the pump room through the water inlet of the pulsator and pumped up, thereby increasing the circulation amount of the washing liquid.

According to a second aspect of the present invention, in the first aspect of the present invention, a porous body is detachably attached above the pulsator so as to cover the pulsator. The washing liquid is applied from the top of the laundry and the washing liquid can pass through and wash without moving the laundry, and the circulation amount of the washing liquid can be increased. Power can be strengthened.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the water inlet is provided on one surface of the upper blade of the pulsator. The liquid can be easily taken into the pump chamber to increase the circulation amount, and the flow of the washing liquid can be changed depending on the rotation direction of the pulsator.

The invention described in claim 4 is the above-mentioned claim 1 to claim 1.
In the invention described in 3, the water introduction port is constituted by a plurality of holes integrally formed with the pulsator, and the washing liquid inside the washing tub is also taken into the pump chamber through the water introduction port of the pulsator and circulated for washing. At the same time, it is possible to perform ordinary stirring-type washing in which the laundry is directly stirred by the pulsator.

[0017] The invention described in claim 5 is the above-mentioned claim 1-
In the invention described in 3, the water introduction port is formed by insert-molding a stainless steel member having a plurality of holes into the pulsator, and the pulsator is used for ordinary pulsator washing during normal stirring-type washing in which laundry is directly stirred by the pulsator. Strength can be increased.

According to a sixth aspect of the present invention, in the fourth or fifth aspect, the hole of the water inlet projects below the pulsator, and the depth of the hole is larger than the diameter of the hole. Part of the laundry enters the hole,
It can be prevented from getting stuck.

The invention according to claim 7 is the invention according to claims 4 to
In the invention described in 6, the hole of the water introduction port protrudes below the pulsator, the diameter of the hole is narrower on the pump chamber side than the water inlet side, and a part of the laundry enters the hole,
It can be prevented from getting stuck.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. The same components as those in the conventional example are denoted by the same reference numerals, and description thereof is omitted.

(Embodiment 1) As shown in FIGS. 1 to 3,
The pulsator 24 includes a lower blade 25 for a pump for pumping water and an upper blade 26 for stirring laundry. The upper blade 26 has a chevron shape protruding above the pulsator 24, has a hollow interior, and is open below the pulsator 24. A plurality of water inlets 27 are integrally formed with the pulsator 24 on the clockwise rotation side surface of the upper blade 26, and are connected to the upper and lower pump chambers 9 of the pulsator 24 through the water inlet 27.

The operation of the above construction will be described. First, as shown in FIG. 1, the porous body 12 is mounted inside the washing / dewatering tub 3, the laundry 20 is put thereon, and the start switch (not shown) is set. When the button is pressed, the water supply valve 17 is controlled by the control device 19 to supply water to a predetermined water level, and the washing process starts. When the washing process is started, the motor 13 rotates the clockwise / pause / counterclockwise / pause according to the set washing water flow.
9. The controlled rotation of the motor 13 is transmitted to the pulsator 24 via the V-belt 14 and the speed reduction mechanism / clutch 15, and the pulsator 24 rotates.

The washing liquid between the lower blade 25 of the pulsator 24 and the water receiving tub 1 is pushed outward by centrifugal force due to the rotation of the lower blade 25, passes through the circulation channel (water channel) 7, From 10, it is poured into the washing and dewatering tub 3 intermittently according to the rotation of the motor 13. In addition, in the trace of the washing liquid pushed out to the circulation channel 7 by the lower blade 25 of the pulsator 24, a force for sucking the washing liquid into the center of the lower blade 25 of the pulsator 24 is generated. The sucking force sucks the washing liquid outside the washing and dewatering tub 3.

On the other hand, the flow of the washing liquid in the vicinity of the water inlet 27 varies depending on the rotation direction of the pulsator 24. The flow of the water is shown in FIG. 4 and FIG.

When the pulsator 24 rotates clockwise, as shown in FIG. 4, the pulsator 24 rotates with the water inlet 27 side facing the front, so that the washing liquid passes through the water inlet 27 as shown by the arrow, and the pulsator 24 rotates. Move from the upper side to the lower side. The washing liquid moved to the lower side is pushed out to the pump chamber 9 outside the pulsator 24 by the inner wall of the hollow upper blade 26 and the lower blade 25. The washing liquid supplied from the lower side of the pulsator 24 is added to the washing liquid, and the amount of the washing liquid pumped through the circulation channel 7 increases as compared with the case where the washing liquid is supplied only from the lower side.

The fact that the amount of the washing liquid pumped at a time increases, and that the washing liquid under the porous body 12 is pushed out from the water introduction port 27 into the pump chamber 9, whereby a suction force acts below the porous body 12. Thus, an effect of increasing the effect of driving out the washing liquid that has soaked and then soaking into the laundry can be obtained. By increasing the amount of soaking into the laundry, the power of the washing liquid acting on the stain becomes stronger.

Conversely, when the pulsator 24 rotates left,
As shown in FIG. 5, the upper blade 26 of the pulsator 24
As shown by the arrow, the washing liquid above the pulsator 24 is pushed upward. After the washing liquid, the washing liquid on the lower side of the pulsator 24 flows out through the water inlet 27 of the pulsator 24.

The washing liquid supplied from the lower side of the pulsator 24 is divided into a washing liquid which is pumped up through the circulation channel 7 and a washing liquid which flows out onto the pulsator 24 through the water inlet 27 of the pulsator 24. Although the amount of the washing liquid pumped up decreases, the amount supplied from the lower side of the pulsator 24 increases because the number of paths increases in two ways.

When the washing liquid blows out from the pulsator 24 through the water inlet 27, the washing liquid pushes up the laundry on the porous body 12 from below. As a result, an effect of injecting the washing liquid into the laundry from below can be obtained, and more washing liquid can be included than before.

As described above, the pulsator 24 repeatedly rotates left and right to create different flows of the washing liquid, alternately repeats two different effects, and efficiently exchanges the washing liquid soaked in the laundry to remove dirt. The acting force can be increased. As a result, the washing performance can be significantly improved by improving the detergent (surfactant) dissolving properties and the shower effect and circulation effect of the washing liquid.

Further, by repeatedly rotating in the same direction as in the case where the amount of the washing liquid to be pumped is maximized by repeating only the clockwise rotation, each action can be brought out strongly. Also, by changing the ratio of the number of times in each rotation direction (for example, repeating the rotation direction of “right / right / left”) or changing the time ratio (for example, “right 2 seconds / left 1 second”) , The ratio of the two effects can be set freely.

Although the position of the water introduction port 27 is set to the clockwise direction surface of the upper blade 26, the same applies to the opposite direction. In that case, the description of the rotation direction of the pulsator 24 is reversed left and right.

(Embodiment 2) As shown in FIGS. 6 and 7, a pulsator 28 is formed by insert-molding a stainless steel member 29 having a plurality of holes 30 on its surface at the time of resin molding. I have. As shown in FIG. 8, the hole 30 on the surface of the pulsator 28 is tapered toward the lower side of the pulsator 28, the inlet diameter of the hole is A, the depth of the tapered portion is B, and the tip of the tapered portion is Assuming that the outlet diameter is C, the dimensions are set so that the outlet diameter C <the inlet diameter A <the depth B. Other configurations are the same as those in the first embodiment.

The operation of the above configuration will be described. When the porous body 12 is removed and the laundry is stirred by directly stirring the laundry with the pulsator 28, when the pulsator 28 rotates, the upper blades of the pulsator 28 stir the laundry. Then, a force for abrading the surface of the pulsator 28 acts due to the friction of the laundry. In particular, the frictional force of the water inlet portion on the surface of the pulsator 28 is larger than that of the other portions due to unevenness of the surface. However, since the vicinity of the hole 30 constituting the water inlet is made of the stainless member 29 which is hard to wear, even if the pulsator 28 is used for a long period of time, the surface of the pulsator 28 near the hole 30 does not wear and the dimensional change is prevented. can do.

Since the hole 30 constituting the water inlet is formed in the surface of the pulsator 28, a part of the laundry (for example, a projection such as a button or a hook) is caught by the hole 30. However, since the tapered portion satisfies the condition of outlet diameter C <inlet diameter A <depth B, even if it is caught on the surface, it does not penetrate to the back side of the pulsator 28 and does not come off.

As described above, the problem of directly agitating the laundry with the pulsator 28 can be solved, and the washing machine shown in the first embodiment makes it possible to carry out the washing with the ordinary stirring method.

Although the pulsator 28 is formed by insert-molding the stainless member 29 at the time of resin molding, the entire pulsator may have a single stainless steel structure.

(Embodiment 3) As shown in FIG. 9, the washing machine outer frame 31 has a washing tub 32 attached inside.
A circulating water channel cover 33 is attached to the side wall, and a circulating water channel 34 is formed with the washing tub 32. Pulsator 35
Is rotatably disposed at the bottom of the washing tub 32 and has a motor 36.
To drive through the V-belt 37. The drain valve 38 drains the washing liquid in the washing tub 32, and the water supply valve 39
Water. A watering nozzle 40 and a lint filter 41 are provided above the circulation water channel 34. 42 is a control device. The pulsator 3 is placed above the pulsator 35.
A porous body 43 having a large number of holes is detachably attached so as to cover 5 and is dynamically separated from the pulsator 35 and attached, and a laundry 44 is placed thereon.

The pulsator 35 has the same configuration as the pulsator 28 of the second embodiment, and includes an upper blade 45 and a lower blade 46.
And a water introduction port 47 is provided on the surface of the upper blade 45.

The operation of the above configuration will be described. First,
As shown in FIG. 9, the porous body 44 is mounted in the washing tub 32,
When the laundry 44 is placed thereon and a start switch (not shown) is pressed, the water supply valve 39 is controlled by the control device 42 to supply water to a predetermined water level, and the washing process is started. When the washing process starts, the motor 36 rotates to the right, pauses,
It is controlled by the control device 42 with left rotation / pause. The controlled motor rotation is transmitted to the pulsator 35 via the V-belt 37, and the pulsator 35 rotates.

When the pulsator 35 rotates clockwise, it rotates toward the water inlet 47 of the upper blade 45 of the pulsator 35.
The washing liquid moves from the upper side to the lower side of the pulsator 35 through the water inlet 47. The washing liquid that has moved downward is pushed out of the pulsator 35 by the centrifugal force of the rotation of the inner wall of the hollow upper blade 45 and the rotation of the lower blade 46. The extruded washing liquid is poured into the washing tub 32 from the lint filter 42 and the water spray nozzle 41 through the circulation water channel 34. The poured washing liquid permeates the laundry and passes through to wash the laundry. Conversely, when the pulsator 35 rotates counterclockwise, the upper blades 45 of the pulsator 35 push up the washing liquid upward, and stir the washing liquid in the washing tub 32.

As described above, pumping of the washing liquid by the pulsator has been conventionally performed only in the washing machine having the double tub structure of the water receiving tub and the washing and dewatering tub. This is also possible in a machine-integrated "two-tub washing machine").

Thus, a washing machine having a single tub structure can perform a circulating washing without directly stirring the laundry. Also, when removing the porous body 44 and washing with a normal stirring method,
The washing performance can be greatly improved by the shower effect and the circulation effect of the washing liquid.

[0044]

As described above, according to the first aspect of the present invention, the washing tub, the pulsator rotatably disposed on the bottom of the washing tub, and the outer periphery of the lower blade of the pulsator. Pump chamber, a water channel provided from the pump chamber upward of the washing tub, and a nozzle provided in an opening facing the inside of the washing tub above the water channel, the pulsator from the top Since the water inlet to the pump chamber is provided, the washing liquid inside the washing tub can be taken into the pump chamber through the water inlet of the pulsator and pumped up, so that the circulation amount of the washing liquid can be increased.

According to the second aspect of the present invention, since the porous body is detachably attached above the pulsator so as to cover the pulsator, the laundry is placed on the porous body and the laundry is placed from above the laundry. By applying the washing liquid, the washing liquid can be passed through and washed without moving the laundry, and the amount of circulation of the washing liquid can be increased, so that the washing liquid can increase the force acting on the dirt. .

According to the third aspect of the present invention, since the water inlet is provided on one surface of the upper blade of the pulsator, the washing liquid inside the washing tub can be easily taken into the pump chamber from the water inlet so that the circulation amount can be increased. Can be increased, and the washing liquid can be sucked and discharged from the pulsator according to the rotation direction of the pulsator, the flow of the washing liquid can be changed, and two different flows of the washing liquid can be created.
By repeating two different effects alternately, the washing liquid soaked in the laundry can be efficiently exchanged, and the force acting on the stain can be increased. As a result, the washing performance can be significantly improved by improving the detergent (surfactant) dissolving properties and the shower effect and circulation effect of the washing liquid.

According to the fourth aspect of the present invention, since the water introduction port is constituted by a plurality of holes integrally formed with the pulsator, the washing liquid inside the washing tub is also supplied to the pump chamber through the water introduction port of the pulsator. While taking in and circulating and washing, it is possible to perform ordinary stirring-type washing in which laundry is directly stirred with a pulsator.

According to the fifth aspect of the present invention, the water inlet is formed by insert-molding a stainless steel member having a plurality of holes into the pulsator, so that the pulsator directly agitates the laundry directly. The strength of the pulsator at the time of washing can be increased.

According to the sixth aspect of the present invention,
The hole of the water inlet protrudes below the pulsator and has a depth greater than the diameter of the hole, so that a portion of the laundry can be prevented from entering the hole and being caught.

According to the seventh aspect of the present invention, the hole of the water introduction port projects below the pulsator, and the diameter of the hole is smaller on the pump chamber side than on the water inlet side. The part can be prevented from getting into the hole and getting caught.

[Brief description of the drawings]

FIG. 1 is a sectional view of a washing machine according to a first embodiment of the present invention.

FIG. 2 (a) An enlarged plan view of the pulsator of the washing machine (b) An enlarged sectional view of the pulsator of the washing machine

FIG. 3 is an enlarged sectional view of the pulsator of the washing machine taken along line AA.

FIG. 4 is a diagram showing an example of a flow of a washing liquid near a pulsator of the washing machine.

FIG. 5 is a diagram showing another example of the flow of the washing liquid near the pulsator of the washing machine.

FIG. 6 is a sectional view of a pulsator of a washing machine according to a second embodiment of the present invention.

FIG. 7 is an enlarged plan view of a stainless member of the pulsator of the washing machine.

FIG. 8 is an enlarged sectional view of a water inlet of the pulsator of the washing machine.

FIG. 9 is a sectional view of a washing machine according to a third embodiment of the present invention.

FIG. 10 is a sectional view of a conventional washing machine.

[Explanation of symbols]

 3 Washing and dewatering tub (Washing tub) 7 Circulating waterway (Waterway) 9 Pump room 10 Nozzle 24 Pulsator 25 Lower blade 27 Water inlet

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor 3rd generation Daikita 1006 Ojidoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (7)

[Claims] 1. A washing tub, a pulsator rotatably disposed on a bottom surface of the washing tub, a pump chamber provided on an outer periphery of a lower blade of the pulsator, and a pump chamber extending upward from the pump chamber. A washing machine comprising: a water channel provided; and a nozzle provided at an opening facing the inside of a washing tub above the water channel, wherein the pulsator has a water guide port from an upper surface to a pump chamber. 2. The washing machine according to claim 1, wherein a porous body is detachably mounted above the pulsator so as to cover the pulsator. 3. The washing machine according to claim 1, wherein the water introduction port is provided on one surface of the upper blade of the pulsator. 4. The washing machine according to claim 1, wherein the water inlet comprises a plurality of holes integrally formed with the pulsator. 5. The washing machine according to claim 1, wherein the water introduction port is formed by insert-molding a stainless member having a plurality of holes into the pulsator. 6. The washing machine according to claim 4, wherein the hole of the water introduction port projects below the pulsator, and the depth of the hole is larger than the diameter of the hole. 7. The washing machine according to claim 4, wherein the hole of the water introduction port protrudes below the pulsator, and the diameter of the hole is smaller on the pump chamber side than on the water inlet side.