CN112522925B - Washing machine - Google Patents

Abstract

Provided is a washing machine which can realize large capacity under the state of maintaining the height of a basket and can restrain the washing water scattered to an upper surface cover from being sucked into clothes when the dehydrated clothes are taken out. The washing machine includes: a housing; an upper surface cover disposed on the upper part of the housing; an outer tub storing water contained in the casing; a washing and dehydrating tub rotatably supported in the outer tub for storing laundry; a fluid balancer installed at an upper portion of the washing and dehydrating tub; and a tub cover installed below the upper surface cover and at an upper end of the outer tub, the tub cover having an inclined surface inclined toward a lower side of a center direction of the washing and dehydrating tub on an upper surface.

Description

Washing machine

Technical Field

The present invention relates to a washing machine for washing laundry such as clothes.

Background

As a washing machine, a vertical washing machine is known which includes: a washing and dehydrating tub having a fluid balancer; an outer barrel for accommodating the washing and dehydrating barrel; and a tub cover mounted on the upper end of the outer tub. In such a washing machine, the automatic operation washing process includes a series of steps such as a washing step, a rinsing step, and a dewatering step. In the washing step, after tap water (washing water) is supplied, a washing operation is performed in which the stirring blades are rotated in the forward and reverse directions to apply mechanical force to the laundry. When a large capacity is to be achieved using a conventional washing/dehydrating tub, water splashes when the stirring blades rotate.

As a washing machine for suppressing such water splash, there is known a washing machine in which, when the height of a basket (バスケット) is maintained, an annular rib is provided at an intermediate portion between an inner peripheral surface of a tub cover and an inner peripheral surface of a fluid balancer, so that water flow cannot cross the annular rib (see patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese unexamined patent publication No. 7-308486

Disclosure of Invention

Problems to be solved by the invention

However, when the capacity is further increased, water splash during washing becomes serious, and the washing machine described in patent document 1 cannot cope with water splash which jumps over a tub lid disposed above the washing and dehydrating tub and washing water which splashes to an unnecessary place such as the upper surface of the tub lid remains. Therefore, when the dehydrated laundry is taken out, the washing water scattered to the tub cover and the upper surface cover may be sucked into the laundry.

The invention aims to provide a washing machine which can realize large capacity in a state of maintaining the height of a basket and can inhibit washing water scattered to a barrel cover and an upper surface cover from being sucked into clothes when the dehydrated clothes are taken out.

Means for solving the problems

The washing machine of the present invention comprises: a housing; an upper surface cover disposed on the upper part of the housing; an outer tub storing water contained in the casing; a washing and dehydrating tub rotatably supported in the outer tub for accommodating laundry; a fluid balancer installed at an upper portion of the washing and dehydrating tub; and a tub cover mounted below the upper surface cover and having an upper end of the outer tub, wherein the tub cover has an inclined surface inclined toward a lower side of a center direction of the washing and dehydrating tub on an upper surface.

Effects of the invention

The invention can provide a washing machine which can realize large capacity under the state of maintaining the height of a basket and can inhibit washing water scattered to a drum cover and an upper surface cover from being sucked into clothes when the dehydrated clothes are taken out.

Drawings

Fig. 1 is a diagram showing an internal configuration of a washing machine 1 according to the present invention.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Fig. 3 is a view showing an example of the tub cover according to the present invention.

Description of the reference numerals

1: a washing machine; 2: a washing and dewatering tub; 3: stirring blades; 5: a housing; 7: an outer tub; 8: a vibration-proof member; 9: an upper surface cover; 10: a base member; 11: a drain hose; 13: a drain valve; 16: an electromagnetic water supply valve; 18: a barrel cover; 19: a control unit; 23: a fluid balancer; 30: an inclined surface; 31: a hole; 32: inclined plane

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In each embodiment, the same portions are denoted by the same reference numerals, and redundant description thereof is omitted. In the following description, the front-rear vertical direction is based on the front-rear vertical direction shown in fig. 1.

Fig. 1 is a schematic diagram showing an internal configuration of the embodiment.

As shown in fig. 1, the washing machine 1 has a housing 5 containing internal mechanisms. An upper surface cover 9 made of synthetic resin is provided on the upper portion of the housing 5. A control unit 19 (control unit) and an electromagnetic water supply valve 16 (water supply unit) as a water supply unit are provided inside the upper surface cover 9. A base member 10 made of synthetic resin is provided at a lower portion of the housing 5.

The washing machine 1 hangs down an antivibration support outer tub 7 by a antivibration device 8 made of a coil spring or elastic rubber suspended and supported from an upper end of a casing 5, and the outer tub 7 is made of synthetic resin and formed in a bottomed cylindrical shape to store water contained in the casing 5. The water level of the washing water in the outer tub 7 is detected from the air trap 7a thereof through the air pipe 7b by the pressure-sensitive water level sensor 15 as a water level detecting unit.

The washing and dehydrating tub 2 is rotatably supported in the outer tub 7, houses the laundry W, has a bottomed cylindrical shape, and includes a main body plate 21, a bottom plate provided at the bottom of the main body plate 21, and a fluid balancer 23 provided above the main body plate 21. A plurality of through holes 21a (only a part of which is shown) for water and air to pass through are formed in the side wall (main body plate 21) and the bottom wall of the washing and dewatering tub 2. The through holes 21a function as dewatering holes for separating and discharging the washing water contained in the laundry W from the laundry W by centrifugal force.

The fluid balancer 23 provided at the upper part of the washing and dehydrating tub 2 is formed in a ring shape by synthetic resin or the like, and has a plurality of flow paths inside. The liquid is sealed in the flow path, and when vibration occurs during dehydration, the vibration is reduced. Specifically, when vibration occurs due to laundry being biased to one side (hereinafter, referred to as unbalance) during dehydration, when a rotation number higher than the resonance rotation number (rotation number) is used, the vibration is performed in a direction shifted by 180 degrees from the phase of the direction of the unbalance. At this time, the liquid in the fluid balancer 23 is biased toward the vibration direction side. That is, since the position is shifted by 180 degrees with respect to the unbalance, the unbalance can be cancelled, and the vibration can be reduced.

The stirring blade 3 provided at the lower part of the washing and dehydrating tub 8 is formed in a substantially disk shape, a blade member is provided on the back surface (lower surface) of the stirring blade 3, and the stirring blade 3 rotates, whereby the washing water is pushed out to the radial outside of the washing and dehydrating tub 2.

The washing and dehydrating tub 2 includes circulation flow path members 24 arranged to face each other. The circulation flow path members 24 are attached to the inner peripheral surface (inner surface of the side wall) of the washing and dewatering tub 2 so as to face each other. The circulation flow path member 24 is made of resin, but is not limited thereto as long as predetermined mechanical strength and workability can be obtained, and may be made of other materials such as metal.

A circulation flow path R is provided in the vertical direction between the circulation flow path member 24 and the washing and dehydrating tub 2. When the stirring blade 3 rotates during washing or the like, the washing water is guided to the circulation flow path R. Then, the washing water rises in the circulation flow path R, and is discharged into the washing and dehydrating tub 2 from the discharge port 32 formed at the upper end of the circulation flow path member 24 (the lower end of the fluid balancer 23), whereby the washing water is circulated.

A motor 6b is provided outside the bottom of the outer tub 7, and the washing and dehydrating tub 2 and the stirring blades 3 as the inner tub can be rotated as follows by controlling the clutch mechanism 6 a. The 1 is: the washing and dehydrating tub 2 is locked in a stationary state or the stirring blade 3 is repeatedly rotated in forward and reverse directions in a free state in a freely rotatable manner, and is mainly used for stirring laundry. The other 1 is: the washing and dehydrating tub 2 and the stirring blade 3 are rotated integrally in the same direction, and are mainly used for dehydration.

A laundry inlet 9a for taking in and out laundry W such as laundry is provided in a central portion of the upper surface cover 9. The upper cover 9 is provided with a cover 9b for opening and closing the laundry inlet 9a. The electronic components provided inside the upper surface cover 9 are provided on both the front side and the rear side of the upper surface cover 9. The front-side back surface of the upper surface cover 9 is protected by a front protection cover 9 c. The rear-side back side of the upper surface cover 9 is protected by a rear protection cover 9 d.

A control unit 19, a pressure-sensitive water level sensor 15 for detecting a water level, an electromagnetic water supply valve 16, and the like are housed in a space portion constituted by the upper surface cover 9 and the rear protection cover 9 d. The control unit 19 may be disposed in either the space defined by the front protective cover 9c or the space defined by the rear protective cover 9 d. Further, a water supply hose connection port is provided on the rear outer side of the upper surface cover 9, and is connected to a water supply hose 17 connected to a faucet of a water supply pipe. The other end of the water supply hose connection port is connected to an electromagnetic water supply valve 16.

A tub drain opening 7c is provided at the bottom of the tub 7. A drain valve 13 and a drain hose 11 as a drain device are connected to the tub drain port 7c. When the dehydration step or the like is performed, the drain valve 13 is opened in accordance with a command from the control unit 19. The washing water in the outer tub 7 is drained from the other end of the drain hose 11 to the outside of the washing machine 1.

Fig. 2 is an enlarged view of a portion a of fig. 1.

As shown in fig. 2, a gap S exists between the inner peripheral surface of the outer tub 7 and the outer peripheral surface of the washing and dehydrating tub 2. In order to ensure the rigidity of the entire outer tub 7 without the laundry or the like entering the gap S, a tub cover 18 is provided which is attached to the lower side of the upper surface cover 9 and covers the outer side of the upper surface of the fluid balancer 23 at the upper end of the outer tub 7. The tub cover 18 is made of synthetic resin, and an inner peripheral wall 18a (annular inner wall) is located on the outer peripheral side of the inner peripheral wall 23a (annular inner wall) of the fluid balancer 23, and has an inclined surface 30 inclined downward in the center direction of the washing and dewatering tub 2 on the upper surface. The water droplets scattered to the laundry inlet 9a of the upper surface cover during washing flow down along the inclined surface of the inlet to the upper surface of the lower tub cover 18, and flow to the upper surface of the fluid balancer 23 along the inclined surface 30 of the tub cover 18. In other words, the drain path is provided below the inclined surface 30 of the tub cover 18. The drainage path is provided in the gap S between the outer tub 7 and the washing and dehydrating tub 2 from the upper surface (inclined surface 32) of the fluid balancer 23. Further, the water droplets flowing to the upper surface of the fluid balancer 23 flow in the outward direction by the centrifugal force during the dehydration operation, and the accumulated water can be efficiently drained between the outer tub 7 and the washing and dehydrating tub 2.

By providing the inclined surface 30 on the upper surface of the tub cover 18 in this manner, the washing machine can be provided as follows: the washing machine can realize large capacity under the condition of maintaining the height of the basket, and can prevent washing water scattered to the barrel cover and the upper surface cover from being sucked into clothes when the dehydrated clothes are taken out.

The mounting surfaces of the lid 18 and the upper surface cover 9 on the casing are made of a water-repellent resin or a coating agent. This is because water droplets adhere to the laundry W in a state where the water droplets adhere to the tub cover 18 and the upper surface cover 9, and therefore, by applying a material having high water repellency, the water droplets do not adhere to the tub cover 18 and the upper surface cover 9.

In this form, the inclined surface 32 is provided in the fluid balancer 23 in order to efficiently discharge water, but the fluid balancer 23 may be parallel (flat) because it flows in the outward direction by centrifugal force during the dewatering operation, and a rib may be provided at the outer end of the fluid balancer 23.

Further, a slit may be provided in the inclined surface 30 or the flat surface of the tub cover 18 to further flow the water droplets to the gap S.

Fig. 3 is a view showing a plurality of holes 31 formed on the upper surface of the tub cover 18.

By providing the plurality of through holes 31 in the inclined surface 30 of the tub cover 18 in this manner, water droplets splashed to the laundry inlet 9a of the upper surface cover during washing can be efficiently drained from the holes 31 to the gap S between the inner peripheral surface of the outer tub 7 and the outer peripheral surface of the washing and dewatering tub 2.

Claims (3)

1. A washing machine, characterized by comprising:

a housing;

an upper surface cover disposed on an upper portion of the housing;

an outer tub storing water contained in the casing;

a washing and dehydrating tub rotatably supported in the outer tub and capable of storing laundry;

a fluid balancer installed at an upper portion of the washing and dehydrating tub; and

a tub cover installed below the upper surface cover and having an upper end portion of the outer tub,

the upper surface of the barrel cover is provided with an inclined surface inclined towards the lower side of the central direction of the washing and dewatering barrel, the inner peripheral wall of the barrel cover is positioned at the outer peripheral side of the inner peripheral wall of the fluid balancer, and the inclined surface is provided with a gap towards the lower side of the central direction of the washing and dewatering barrel or a through hole.

2. A washing machine according to claim 1,

a drain path is provided under the inclined surface of the tub cover,

the drain path is formed in a gap between the outer tub and the washing and dehydrating tub from an upper surface of the fluid balancer.

3. A washing machine according to claim 1 or 2,

the mounting surfaces of the barrel cover and the housing of the upper surface cover are made of water repellent resin or coating agent.

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