JP7149461B2 - washing machine - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a washing machine that uses a liquid agent to wash clothes.

Patent Literature 1 discloses a washing machine in which a detergent is put between a washing and dewatering tub and a water receiving tub.

This washing machine includes a water receiving tank, a washing and dehydrating tank rotatably disposed in the water receiving tank, and a water receiving tank cover covering the top of the water receiving tank. The water receiving tank cover is provided with a powder detergent inlet into which the powder detergent is introduced.

JP-A-2000-296291

In the conventional configuration, when the washing/drying tub is driven to rotate inside the water receiving tub during dehydration, wind is generated between the washing/drying tub and the water receiving tub. Then, there is a problem that the generated wind passes through the detergent inlet and flows upward, causing the detergent adhering to the detergent inlet to scatter.

The present disclosure provides a washing machine that prevents the detergent adhering to the detergent inlet from scattering.

A washing machine according to the present disclosure includes a water tank, a washing tank contained in the water tank and provided to be rotatable about a central axis extending in a substantially vertical direction, a motor for rotationally driving the washing tank, and the water tank. a water tank cover disposed above the water tank so as to cover the space between the water tank and the washing tank, wherein the water tank cover allows a liquid agent to be introduced between the water tank and the washing tank. A port is provided, and the input port includes an opening that opens into the inside of the water tank in a direction parallel to the central axis, and a first space that divides the input port into a plurality of spaces and extends toward the opening. a rib , wherein the first rib is inclined with respect to the direction in which the washing tub rotates during dehydration operation so that the lower portion precedes the upper portion; It does not have a structure in which the wind generated in the direction in which the washing tub rotates during the dehydration operation flows above the inlet.

The washing machine according to the present disclosure can prevent the detergent adhering to the detergent inlet from scattering.

Longitudinal sectional view of the washing machine according to Embodiment 1 (a) Top view of the water tank cover of the washing machine, (b) Enlarged top view of the detergent inlet of the washing machine (a) AA cross-sectional view in FIG. 2(a), (b) BB cross-sectional view in FIG. 2(a) (a) Schematic diagram showing the flow path of the detergent in the detergent inlet of the conventional washing machine, (b) Schematic diagram showing the movement of the wind in the detergent inlet of the same washing machine (a) Schematic diagram showing the flow path of the detergent in the detergent inlet of the washing machine in Embodiment 1, (b) Schematic diagram showing the movement of the wind in the detergent inlet of the washing machine (a) AA sectional view of the detergent inlet of the washing machine according to Embodiment 2, corresponding to the AA section in FIG. 2(b), (b) corresponding to the BB section in FIG. 2(b) BB cross-sectional view of the detergent inlet of the washing machine in Embodiment 2 (a) Schematic diagram showing the flow path of the detergent in the detergent inlet of the washing machine in Embodiment 2, (b) Schematic diagram showing the movement of the wind in the detergent inlet of the washing machine (a) AA sectional view of the detergent inlet of the washing machine according to Embodiment 3, corresponding to the BB section in FIG. 2(b), (b) corresponding to the BB section in FIG. 2(b) BB cross-sectional view of the detergent inlet of the washing machine in Embodiment 3 (a) Schematic diagram showing the flow path of the detergent in the detergent inlet of the washing machine in Embodiment 3, (b) Schematic diagram showing the movement of the wind in the detergent inlet of the washing machine

Hereinafter, embodiments will be described in detail with reference to the drawings. It should be noted that the present invention is not limited by the accompanying drawings and the following description.

(Embodiment 1)
Embodiment 1 will be described below with reference to FIGS. 1 to 5. FIG.

1 is a longitudinal sectional view of a washing machine according to Embodiment 1. FIG.

In FIG. 1, inside the washing machine main body 6, the water tub 3 is supported by a support rod 7 so as to be able to swing. Inside the water tank 3, a bottomed cylindrical tank 1 having a balancer 8 is rotatably included. The tank 1 is formed with a clothes inlet (not shown) that opens upward, and the clothes inlet is covered with a lid 14 that can be opened and closed. The user can put the laundry into the tank 1 through the clothes inlet by lifting the lid 14 upward. A display substrate 10 is provided on the front upper portion of the washing machine main body 6 so that the user can input and recognize washing conditions and the like.

A side wall of the tank 1 is formed with a large number of small holes communicating with the water tank 3 , and a pulsator 2 is provided on the inner bottom of the tank 1 . A motor 4 and a gear 5 are provided below the tank 1 . The gear 5 switches the driving of the tank 1 and the pulsator 2, and transmits the rotational driving force of the motor 4 to the tank 1 and the pulsator 2 to rotate them. The washing machine rotates the tank 1 and the pulsator 2 during the washing operation to agitate the laundry in water, and discharges the water to the water tank 3 side through the small holes during the dehydration operation.

A water tank cover 15 is provided so as to cover the top of the tank 1 and the water tank 3, and a detergent inlet 16 is formed in the front side portion of the water tank cover 15. - 特許庁The detergent inlet 16 is provided in such a manner that the upper surface and the lower surface of the water tank cover 15 communicate with each other, and introduces the introduced detergent into the water tank 3 . A detailed structure of the detergent inlet 16 will be described later. The washing machine main body 6 is formed with a notch above the detergent inlet, so that the user can directly put the detergent into the detergent inlet.

Next, the detailed structure of the detergent inlet will be described.

Fig. 2(a) is a diagram of the water tub cover of the washing machine in Embodiment 1, Fig. 2(b) is an enlarged diagram of the detergent inlet provided in the water tub cover of the washing machine, Fig. 3(a) , AA sectional view in FIG. 2(a), and FIG. 3(b) is a BB sectional view in FIG. 2(a) .

As shown in FIG. 2B, the detergent inlet 16 has an inclined surface 16a inclined from the inner circumference to the outer circumference of the water tub cover 15 and a plurality of ribs 16b. The ribs 16b are slanted so as to be substantially parallel to each other, and a plurality of spaces 16e are defined between the ribs 16b. The detergent inlet 16 is formed so as to communicate vertically with a space 16e, and the lower end of the space 16e opens into the water tub 3 as an opening 16f.

The operation of the washing machine configured as described above will be described below.

In the washing process, the amount of water suitable for the amount of laundry (clothes, etc.) put into the tank 1 is supplied from the water supply valve 11 to the water tub 3 through the water supply path 12 .

The user puts in the detergent from the detergent inlet 16 almost at the same time as putting in clothes or water. The liquid detergent introduced into the detergent inlet 16 flows down along the inclined surface 16a to the rib 16b or the opening 16f. The detergent falling on the rib 16b flows down along the slope of the rib 16b, passes through the opening 16f from the lower end of the rib 16b, and falls into the water tank 3. At this time, part of the liquid detergent remains attached to the surface 16c of the rib 16b and the lower end of the rib 16b.

After the detergent is added, a series of washing operations are performed, including a washing process for removing stains from the clothes, a rinsing process for draining the washing water and rinsing with fresh water, and a dehydration process for dehydrating the water contained in the clothes.

Next, the operation of the detergent inlet during dehydration will be described.

Fig. 4(a) is a schematic diagram showing the flow path of the detergent in the detergent inlet of the conventional washing machine, and Fig. 4(b) is a schematic diagram showing the movement of the wind in the detergent inlet of the same washing machine. is.

As shown in FIG. 4A, the conventional detergent inlet 17 is provided with a rib 17a provided on the upstream side in the rotational direction of the tank 1 and a second rib 17b provided on the downstream side. ing. The rib 17a is slanted so that the lower part leads the upper part with respect to the rotation direction of the tank 1, and the second rib 17b is slanted so that the upper part leads the lower part. When the detergent is added, the liquid detergent that has flowed down from the inclined surface 16a either drops directly into the opening or flows down along the rib 17a or the second rib 17b. Therefore, the liquid detergent adheres to the front sides of the ribs 17a and the second ribs 17b.

In the dehydration process, centrifugal force is generated by rotating the tank 1 at high speed, and water contained in the clothes is discharged out of the tank 1 through small holes. At this time, between the tank 1 and the water tank 3, the outer wall surface of the tank 1 generates wind in the same direction as the tank 1 rotates.

During the dehydration process, the air flowing into the detergent inlet rises along the second ribs 17b. At this time, since the path through which the air passes and the path through which the liquid detergent flows down overlap, there is a problem that the air blows up the liquid detergent adhering to the second rib 17b and scatters it above the detergent inlet. rice field. The liquid detergent scattered above the detergent inlet adheres not only to the vicinity of the detergent inlet, but also to the interior of the washing machine main body 6 and the floor on which the washing machine is installed. Therefore, it is necessary to prevent the wind generated during dehydration from passing through the detergent inlet.

Fig. 5(a) is a schematic diagram showing the flow path of the detergent in the detergent inlet of the washing machine according to Embodiment 1, and Fig. 5(b) is a schematic diagram showing the movement of the wind in the detergent inlet of the washing machine. is.

Detergent inlet 16 in Embodiment 1 is provided with a plurality of ribs 16b without providing second rib 17b. The ribs 16b are arranged so that the lower part leads the upper part with respect to the direction of rotation during dehydration. The wind generated below the detergent inlet 16 collides with the rear surface 16 d of the rib 16 b and advances into the water tank 3 . Therefore, it is possible to prevent the wind generated by the rotation of the tank 1 from blowing up the liquid detergent and flowing out above the detergent inlet 16 .

Further, as shown in FIG. 5 (b), the flow of air that collides with the rear surface 16d and advances into the water tank 3 generates an air flow downward from the upper portion of the rib 16b. By being exposed to this airflow, the liquid detergent adhering to the surface 16c flows down. In this manner, the liquid detergent adhering to the surface 16c is dropped by the downward air flow of the ribs 16b each time the dehydration operation is performed, so that the liquid detergent remaining in the detergent inlet 16 can be suppressed. Therefore, it is possible to prevent the liquid detergent from gradually sticking to the detergent inlet 16 .

In addition, since the ribs 16b are slanted so that the lower part precedes the upper part with respect to the rotation direction during dehydration, the liquid detergent flows on the front surface 16c and the wind collides with the rear surface 16d. In this way, the structure is such that the wind does not collide with the surface on which the liquid detergent flows, thereby preventing the liquid detergent from being blown up by the wind. Therefore, it is possible to prevent the wind generated by the rotation of the tank 1 from blowing up the liquid detergent and flowing out above the detergent inlet 16 .

Also, it is assumed that part of the wind that has collided with the rear surface 16 d flows out above the detergent inlet 16 . However, the ribs 16b in Embodiment 1 partition the space inside the detergent inlet 16 into a plurality of spaces 16e, thereby separating the winds entering the respective spaces 16e. This division reduces the amount of air in each space 16e, so that the amount of air flowing upward from the detergent inlet 16 can be reduced. Further, by providing a plurality of ribs 16b, the opening 16f is divided into a plurality of portions. As a result, it is possible to increase the area of the opening 16f while suppressing the upward movement of the wind, so that the detergent can be efficiently introduced.

As described above, the washing machine according to Embodiment 1 includes water tank 3, tank 1 rotatably included in water tank 3, motor 4 for rotating tank 1, and water tank 3 and tank 1. and a water tank cover 15 disposed on the upper part of the water tank 3 so as to cover the water tank. The water tank cover 15 is provided with a detergent input port 16 that allows liquid detergent to be input between the water tank 3 and the tank 1. The detergent input port 16 has an opening 16f that opens into the water tank 3, It does not have the second rib 17b, which is structured to allow the wind generated in the rotating direction of the tank 1 to flow into the inlet 16 above during the dehydration operation.

As a result, the wind generated below the detergent inlet 16 can be prevented from traveling upward along the slope of the second rib 17b. Therefore, it is possible to prevent the wind generated by the rotation of the tank 1 from blowing up the liquid detergent and flowing out above the detergent inlet 16 .

Further, like the washing machine in Embodiment 1, the detergent inlet 16 is inclined so that the upper portion precedes the lower portion with respect to the direction in which the tank 1 rotates during the dehydrating operation. and may not have the second rib 17b extending toward the opening 16f.

As a result, the wind generated below the detergent inlet 16 can be prevented from traveling upward along the slope of the second rib 17b. Therefore, it is possible to prevent the wind generated by the rotation of the tank 1 from blowing up the liquid detergent and flowing out above the detergent inlet 16 .

Further, as in the washing machine in Embodiment 1, at least a portion of the detergent inlet 16 is inclined so that the lower portion precedes the upper portion, and ribs 16b extending toward the opening 16f; may have

As a result, the wind generated below the detergent inlet 16 collides with the rear surface 16 d of the rib 16 b and advances into the water tank 3 . Therefore, it is possible to prevent the wind generated by the rotation of the tank 1 from blowing up the liquid detergent and flowing out above the detergent inlet 16 .

Further, like the washing machine in Embodiment 1, a plurality of ribs 16b may be formed in the detergent inlet 16, and the plurality of ribs 16b may be arranged substantially in parallel.

As a result, the total area of the detergent inlet 16 can be increased while suppressing upward movement of the wind generated by the rotation of the tank 1 . Therefore, it is possible to efficiently charge the detergent while preventing the wind generated by the rotation of the tank 1 from blowing up the liquid detergent and flowing out above the detergent inlet 16 .

(Embodiment 2)
The washing machine according to Embodiment 2 has the same configuration as the washing machine according to Embodiment 1 except that detergent inlet 18 is provided instead of detergent inlet 16 .

FIG. 6(a) is an AA cross-sectional view of the detergent inlet of the washing machine according to Embodiment 2, corresponding to the AA cross-section in FIG. 2(b), and FIG. ) is a cross-sectional view of the detergent inlet of the washing machine according to Embodiment 2, corresponding to the cross-sectional view of BB.

As shown in FIG. 6, the upper portion of the detergent inlet 18 is provided with an inclined surface 18a for introducing detergent, and a single rib 18b is formed from a portion of the lower end of the inclined surface 18a. Further, the opening 18c in the second embodiment is positioned at the lower end of the inclined surface 18a on the preceding side with respect to the rotation direction during dehydration. The detergent input port 18 is configured such that the liquid detergent input to the detergent input port 18 flows down along the inclined surface 18a and falls onto the rib 18b or the opening 18c. Since the opening 18c opens toward the inside of the water tub 3, the dropped liquid detergent reaches the water tub 3.

With respect to the washing machine constructed as described above, the operation of the detergent inlet during dehydration will be described below.

FIG. 7(a) is a schematic diagram showing the flow path of the detergent in the detergent inlet of the washing machine according to Embodiment 2, and FIG. 7(b) is a schematic diagram showing the movement of the wind in the detergent inlet of the washing machine. is.

As shown in FIG. 6, the wind generated during dehydration collides with the rear surface of the rib 18b or the upper wall 18d and escapes in the direction of rotation. In this way, by not providing the rib positioned on the leading side with respect to the rotation direction during dehydration, it is possible to suppress the wind from entering the detergent inlet 18 . Further, the ribs 18b are preferably arranged so that the width of the openings 18c in the rotation direction of the tank 1 is narrowed. As a result, the wind flowing in the rotation direction of the tank 1 can be prevented from flowing upward from the opening 18c.

As described above, the washing machine according to Embodiment 2 includes water tank 3, tank 1 rotatably included in water tank 3, motor 4 for rotating tank 1, and water tank 3 and tank 1. and a water tank cover 15 disposed on the upper part of the water tank 3 so as to cover the water tank. The water tank cover 15 is provided with a detergent inlet 16 into which a liquid detergent can be put between the water tank 3 and the tank 1. The detergent inlet 18 has an opening 18c that opens into the water tank 3. The second rib 17b is inclined so that the upper portion precedes the lower portion with respect to the direction in which the tank 1 rotates during the dewatering operation, and the second rib 17b extends toward the opening 18c. It is characterized by not having

Further, as in the washing machine according to the second embodiment, one rib 18b is formed in the detergent inlet 18, and the opening 18c is formed at a position preceding the lower end of the rib 18b. good too.

As a result, it is possible to prevent the wind generated by the rotation of the tank 1 from blowing up the liquid detergent and flowing out above the detergent inlet 18 with a simple shape.

(Embodiment 3)
The washing machine according to Embodiment 3 has the same configuration as the washing machine according to Embodiment 1, except that detergent inlet 19 is provided instead of detergent inlet 16 .

FIG. 8(a) is an AA sectional view of the detergent inlet of the washing machine according to Embodiment 3, corresponding to the BB section in FIG. 2(b); ) is a cross-sectional view of the detergent inlet of the washing machine according to Embodiment 3 , corresponding to the cross-sectional view of BB.

As shown in FIG. 8, the upper portion of the detergent inlet 19 is provided with an inclined surface 19a for introducing detergent, and a rib 19b is formed from a part of the lower end of the inclined surface 19a. The rib 19b is slanted so that the lower portion precedes the upper portion with respect to the rotation direction of the tank 1 during dehydration. A rib 19c is provided at a position preceding the rib 19b with respect to the rotation direction of the tank 1 during dehydration. The rib 19c is slanted such that the upper portion precedes the lower portion with respect to the rotation direction of the tank 1 during dehydration. The lower end of the rib 19c is positioned vertically above the lower end of the rib 19b. A substantially vertical opening 19d is formed between the rib 19b and the rib 19c. The detergent put into the detergent inlet 19 drops along the inclined surface 19a, and along the rib 19b or the rib 19c, drops into the opening 19d.

Fig. 9(a) is a schematic diagram showing the flow path of the detergent in the detergent inlet of the washing machine according to Embodiment 3, and Fig. 9(b) is a schematic diagram showing the movement of the wind in the detergent inlet of the washing machine. is.

As shown in FIG. 9B, the wind generated during dehydration in the third embodiment collides with the rib 19b located below the rib 19c and advances into the water tub 3. As shown in FIG. Therefore, the wind generated during dehydration does not flow to the upper portion of the detergent inlet 19 along the surface side of the ribs 19c.

As described above, the washing machine according to Embodiment 3 includes water tank 3, tank 1 rotatably included in water tank 3, motor 4 for rotating tank 1, and water tank 3 and tank 1. and a water tank cover 15 disposed on the upper part of the water tank 3 so as to cover the water tank. The water tank cover 15 is provided with a detergent input port 19 into which a liquid detergent can be input between the water tank 3 and the tank 1. The detergent input port 19 includes an opening 19d that opens into the water tank 3 and at least one ribs 19b extending toward the opening 19d and formed so that the lower portion is inclined so that the lower portion leads the upper portion; and a rib 19c located near and above the lower end of 19b.

(Other embodiments)
As described above, Embodiments 1 to 3 have been described as examples of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this.

Therefore, other embodiments will be exemplified below.

In Embodiments 1 to 3, as an example of the configuration positioned above the detergent inlet 16, the configuration in which the notch is formed in the washing machine main body 6 has been described. The structure positioned above the detergent inlet 16 is not particularly limited, and the detergent inlet 16 may also be provided with a hole, and the detergent may be introduced into the detergent inlet 16 through the hole.

In the first to third embodiments, the rib 16b and the rib 18b have been described as examples of the first rib. At least a part of the first rib may be inclined so that the lower part leads the upper part. Therefore, the number and inclination of ribs 16b and ribs 18b are not limited. However, by increasing the degree of inclination, it becomes possible to block the wind efficiently. Also, the lower portions of the ribs 16b and 18b may be rounded or may be bent substantially at a right angle.

In Embodiments 1 to 3, the liquid detergent has been described as an example of the liquid agent. The liquid agents are not limited to detergents as long as they are liquids, and may be softeners or bleaches.

INDUSTRIAL APPLICABILITY The present disclosure is applicable to washing machines that use liquid agents for washing. Specifically, the present disclosure is applicable to vertical washing machines, drum washing machines, twin-tub washing machines, and the like.

1 tank (washing tub)
2 Pulsator 3 Water Tank 4 Motor 5 Gear 6 Washing Machine Main Body 7 Support Rod 8 Balancer 10 Display Board 11 Water Supply Valve 12 Water Supply Path 15 Water Tank Cover 16 Detergent Input Port (Inlet)
16a Inclined surface 16b Rib (first rib)
16c front surface 16d rear surface 16e space 16f opening 17 conventional detergent input port 17a rib 17b second rib 18 detergent input port (input port)
18a Inclined surface 18b Rib (first rib)
18c opening 19 detergent input port (input port)
19a Inclined surface 19b Rib (first rib)
19c second rib 19d opening

Claims (3)

a water tank;
a washing tub contained in the water tub and provided rotatably around a central axis extending in a substantially vertical direction ;
a motor for rotating the washing tub;
a water tank cover disposed above the water tank so as to cover between the water tank and the washing tub;
The water tub cover is provided with an inlet that allows a liquid agent to be introduced between the water tub and the washing tub,
The inlet is
an opening opening inside the water tank in a direction parallel to the central axis ;
a first rib that divides the inlet into a plurality of spaces and extends toward the opening;
has
The first rib is inclined so that the lower part precedes the upper part with respect to the direction in which the washing tub rotates during the spin-drying operation,
The washing machine, wherein the inlet does not have a structure in which wind generated in a direction in which the washing tub rotates during dehydration operation flows above the inlet. 2. The washing machine according to claim 1, wherein a plurality of said first ribs are formed in said inlet, and said plurality of said first ribs are arranged substantially parallel to each other. The structure is a second rib that is inclined so that the upper part precedes the lower part with respect to the direction in which the washing tub rotates during the spin-drying operation, and extends toward the opening . The washing machine according to claim 1 or 2 .

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