JP3041166B2 - Washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pulsator rotatably provided at the bottom of a washing tub, and air is introduced into the washing tub at a lower portion of the pulsator by a negative pressure when the pulsator rotates. The present invention relates to a washing machine having an air introduction member to be generated.

[0002]

2. Description of the Related Art One example of a conventional washing machine is shown in FIGS.
It will be explained together. In the conventional washing machine, a washing motor 32 and a dehydration motor 33 are arranged on a bottom 31, an outer tub 34 and a washing tub 35 are combined with the bottom 31, and a bearing holder 36 is fixed to a lower portion of the washing tub 35, A pulsator 37 is connected to the upper portion of the rotating shaft of the holder 36, and a pulley 38 is connected to the lower portion.
9 transmits the rotational force of the washing motor 32 to the pulsator 37 via the V-belt 40. A bellows 41 is fixed to the lower part of the dewatering tub, and a dewatering basket 42 is arranged on the upper part. A dewatering shaft 43 fixed to the dewatering basket 42 penetrates the inside of the bellows 11 and protrudes downward. Motor 33
, And transmits the rotational force of the dehydrating motor 33 to the dehydrating car 42. On the other hand, a washing drainage port 45 is provided at the lower part of the washing tub 35, and water is stopped and drained from the washing tub 35 through a drainage valve 46.

A drain hose 47 communicates with the drain valve 46. When the drain valve 46 is opened, water in the washing tub 35 is discharged to the outside of the machine through the drain hose 47. Dewatering drain 4
8 is connected to the drain hose 47 directly through the drain valve 46, but is always drained outside the machine.

[0004] One end of an air introduction tube 50 attached to a lint filter 49 provided in a part of the washing tub 35 is disposed so as to be located between the lower portion of the washing tub 35 and the pulsator 37, and air is introduced. The other end of the tube 50 is located above the water level at the time of washing and rinsing.

When the pulsator 37 rotates during washing and rinsing, the pump chamber 51 between the lower part of the washing tub 35 and the pulsator 37 becomes a negative pressure, and air is introduced from the other end of the air introduction tube 50 to be discharged as bubbles into the washing tub 35. Was.

[0006]

In the above washing machine, since bubbles are generated even during rinsing, it is necessary to suppress foaming due to the detergent. Rinsing could not be performed efficiently.

Further, in order to position one end of the air introduction tube below the pulsator, it is necessary to extend the lower portion of the lint filter to the lower portion of the pulsator, and the lint filter becomes large, which is inconvenient for mounting and molding. Was occurring. And since the end of the air introduction tube on the air introduction port side is upward, dirt and foreign matter are easily clogged,
There is a problem that air clogging occurs. Further, the air introduction tube must be provided from the lower part of the pulsator to the upper part of the washing tub (above the water surface at the time of washing and rinsing), so that the length of the tube is extremely long and the cost is high.

The washing machine of the present invention has been made in view of the above problems, and has a member for air introduction (tube for air introduction).
Is formed so as to be extendable and contractable, and an air introduction port of the air introduction member is positioned in water at the time of rinsing to prevent generation of bubbles at the time of rinsing.

[0009]

In order to achieve the above object, a washing machine according to the present invention comprises a pulsator rotatably provided at the bottom of a washing tub, and a lower part of the pulsator, which is provided with a negative pressure when the pulsator rotates. In a washing machine having an air introduction member that generates air bubbles by introducing air into the washing tub by pressure, the air introduction member is provided so as to be vertically movable, and an air introduction port of the air introduction member is provided. A movable device is provided which is movable above the water surface during washing and is movable underwater during rinsing.

A pulsator rotatably provided at the bottom of the washing tub, and an air introduction member for introducing air into the washing tub by a negative pressure at the time of rotation of the pulsator below the pulsator to generate air bubbles. And a holding portion for holding one end of the air introduction member positioned below the pulsator is integrally formed with the washing tub. The end of the air introduction member on the air introduction port side is bent in the horizontal direction or less. Further, a lint filter for circulating washing water on the side wall in the washing tub to remove lint in the washing water is provided, and air introduction which also serves as a part of the air introducing member is provided in a part of the lint filter. The mouth is provided.

[0011]

In the washing machine having the above structure, the air introducing member is moved by the movable device so that the air introducing port is located in the water, thereby eliminating the introduction of air and eliminating the generation of bubbles during rinsing.

Further, the holding portion is formed integrally with the washing tub.
Then, the air introduction port side of the air introduction member is bent below the horizontal so as to prevent the air introduction port from being clogged with dust, foreign matter, or the like. Further, the air introduction port of the lint filter also serves as a part of the air introduction member, thereby reducing the length of the air introduction member.

[0013]

1 to 5 show a first embodiment of a washing machine according to the present invention.
It will be explained together. In the washing machine of the present invention, the washing motor 2 and the spin-drying motor 3 are arranged on the base 1, the outer tub 4 and the washing tub 5 are combined with the base 1, and the bearing holder 6 is fixed to the lower part of the washing tub 5. A pulsator 7 is connected to the rotating shaft of the bearing holder 6 and a pulley 8 is connected to a lower portion of the bearing holder 6. The rotational force of the washing motor 2 is transmitted to the pulsator 7 via a V belt 10 to a fan pulley 9 attached to the washing motor 2. .

A bellows 12 is fixed to the lower part of the dewatering tank 11,
A dewatering basket 13 is arranged at the upper part, and a dewatering shaft 14 fixed to the dewatering basket 13 penetrates through the bellows 12 and protrudes downward. The protruding end is connected to a brake wheel 15 connected to the dewatering motor 3. In addition, the rotational force of the dewatering motor 3 is transmitted to the dewatering basket 13.

On the other hand, a washing drain port 1 is provided below the washing tub 5.
6, a dewatering drain port 17 is provided at the lower part of the dewatering tub 11 to stop and drain the washing tub 5 through a drainage valve 18. Drain valve 18
A drain hose 19 communicates with the tub 5. When the drain valve 18 is opened, the water in the washing tub 5 is discharged out of the machine through the drain hose 19. The dewatering drain port 17 is always in a drained state because it is directly connected to a drain hose 19 through a drain valve 18.

One end of an air introducing tube 21 attached to a lint filter 20 provided in a part of the washing tub 5 is disposed so as to be located between the lower part of the washing tub 5 and the pulsator 7. Air can be introduced from the air inlet at the other end of 21 to generate air bubbles. At the time of washing,
When the pulsator 7 rotates, the lower part of the washing tub 5 and the pulsator 7
The pump chamber 22 in between becomes negative pressure and the air introduction tube 21
Air is introduced from the other end of the washing tub 5 and discharged into the washing tub 5 as air bubbles.

A part of the air introduction tube 21 is formed in a bellows shape to provide an elastic portion 23, and the air introduction side of the elastic portion 23 (the other end of the air introduction tube 21) is held by a movable lever 24. The movable lever 24 moves the other end of the air introducing tube 21 in the vertical direction.

The vertical movement of the air introduction tube 21 is achieved by moving the movable lever 24 to an upper position (above the water surface of the washing water) during washing, so that the other end of the air introduction tube 21 (air introduction side). Air is introduced from the air to generate air bubbles, and the air bubbles improve the washing ability.

During rinsing, the movable lever 24 is moved to a lower position (a position lower than the surface of the rinsing water), so that the other end (air introducing side) of the air introducing tube 21 is immersed in water and air is introduced. And no bubbles are generated. Therefore, foaming during rinsing is reduced, and rinsing can be performed in a shorter time than when bubbles are generated.

The operation of the movable lever 24 may be configured to be automatically moved up and down by a driving device at the time of washing or rinsing. Next, the second washing machine of the present invention
When the embodiment is described with reference to FIGS. 6 to 10, the air introduction tube 21 has one end located above the washing drainage port 16 below the pulsator 7, and is held by the holding portion 25 integrally formed with the washing tub 5. doing. Since the holding portion 25 is formed integrally with the washing tub 5, the mold structure for forming the holding portion 25 is simplified, and the cost can be reduced.

A third embodiment of the washing machine according to the present invention will be described with reference to FIGS. 11 and 12. The other end of the air introduction tube 21 is bent at an angle of 90 ° or less (for example, horizontally). This allows the air introduction tube 21 to be
Clogging of the other end with dust, foreign matter and the like can be prevented, and air clogging in the air introduction tube 21 can be prevented.

Further, a fourth embodiment of the washing machine of the present invention is shown in FIG.
3 and FIG. 14, the lint filter 20
By forming an air inlet 26 at the upper end of the air inlet 26 and fitting the other end of the air inlet tube 21 to the air inlet 26, the length of the air inlet tube 21 can be reduced.

[0023]

Since the washing machine of the present invention has the above-described structure, the air introduction member is moved by the movable device so that the air introduction port is located in the water, thereby eliminating the generation of bubbles during rinsing. Thus, foaming during rinsing can be prevented as much as possible, and rinsing can be performed efficiently.

Further, the holding portion can be formed integrally with the washing tub, the mold structure can be simplified, and the cost can be reduced. By bending the air introduction port side of the air introduction member below the horizontal level, it is possible to prevent dust, foreign matter, and the like from clogging the air introduction port, and to reliably generate air bubbles. Further, the air introduction port of the lint filter also serves as a part of the air introduction member, so that the length of the air introduction member can be shortened and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an overall sectional view showing a first embodiment of a washing machine of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a sectional view showing a main part of FIG. 1;

FIG. 4 is a plan view showing a main part of FIG. 1;

FIG. 5 is a side view showing a main part of FIG. 1;

FIG. 6 is a sectional view of a main part of a second embodiment of the washing machine of the present invention.

FIG. 7 is a plan view of FIG. 6;

FIG. 8 is an enlarged plan view showing the holding unit of FIG. 6;

9 is a sectional view taken along the line AA of FIG. 8;

FIG. 10 is a sectional view taken along the line BB in FIG. 8;

FIG. 11 is a sectional view of a main part of a third embodiment of the washing machine of the present invention.

FIG. 12 is a side view of FIG. 11;

FIG. 13 is a sectional view of a main part of a fourth embodiment of the washing machine of the present invention.

FIG. 14 is a side view of FIG.

FIG. 15 is an overall sectional view showing a first embodiment of a conventional washing machine.

FIG. 16 is a plan view of FIG.

FIG. 17 is a sectional view showing the pulsator and the air introducing tube of FIG.

18 is a plan view of FIG.

19 is a cross-sectional view showing the lint filter and the air introduction tube of FIG.

FIG. 20 is a side view of FIG. 19;

[Explanation of symbols]

 Reference Signs List 5 washing tub 7 pulsator 20 lint filter 21 air introduction tube 22 pump room 23 telescopic part 24 movable lever

Claims (4)

(57) [Claims] 1. A pulsator rotatably provided at the bottom of a washing tub, and an air introducing member for introducing air into the washing tub below the pulsator by a negative pressure when the pulsator rotates to generate air bubbles. Wherein the air introduction member is provided so as to be vertically movable, and a movable device is provided for moving the air introduction port of the air introduction member above the water surface during washing and moving it underwater during rinsing. A washing machine, characterized in that: 2. The empty space located below the pulsator.
The holding part holding one end of the air introduction member is
The washing machine according to claim 1, wherein the washing machine is formed by body molding . 3. The washing machine according to claim 1, wherein an end of the air introduction member on the side of the air introduction opening is bent in a horizontal direction or less. 4. A lint filter for circulating washing water to remove lint in the washing water is provided on a side wall in the washing tub, and a part of the air introduction member is provided in a part of the lint filter. 2. The washing machine according to claim 1, further comprising an air inlet that also serves as the air inlet.