JPH0729985Y2 - Washing machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a circulation pump for lint recovery in a washing machine.

[Conventional technology]

As an example of a washing machine equipped with a circulation pump for collecting lint, there is conventionally JP-B-58-9572, which has a plurality of hanging bars (8) in an outer box (1) as shown in FIG. The outer tub (2) is suspended by means of which a washing tub (3) having a number of drainage holes (not shown) formed in the peripheral wall is disposed inside the outer tub (2). Is equipped with a stirring blade (4).

Also, the fixing metal fitting (23) is located below the outer tank (2).
The motor (9) is fixed to the outer tub (2) by means of a mechanism section (11) composed of a bearing portion for the drive shaft of the motor (9) and a reduction mechanism for switching between washing and dehydration, The washing shaft (21) fixed to the stirring blade (4) located coaxially and the dehydration tub (22) fixed to the washing tub (3) were connected.

A dish-shaped lint filter (14) is detachably attached to the upper part of the stirring blade (4), and a circulation pump (40) is fixed to the outer side of the lower part of the outer tank (2). Open the suction port to the outer tank (2), and the circulation hose (18) to the discharge port.
One end of is connected. The other end of the circulation hose (18) is connected to a water supply port (19) provided above the washing tub (3).

In this way, in order to recover the lint generated from the laundry during washing, the circulation pump (40) is driven to wash the washing tub (3).
The washing liquid inside is pumped from the bottom of the outer tub (2) into the circulation hose (18), and is resupplied from the upper water supply port (19) into the washing tub (3) to forcibly circulate the washing water. .

When the washing liquid is discharged from the water supply port (19) into the washing tub (3), the washing liquid flows down into the lower lint filter (14), where the lint is forcibly collected. .

Then, the washing liquid after the washing is discharged from the washing tub (3) and the outer tub (2) to the outside of the machine. As a drainage mechanism, conventionally, for example, as shown in FIG. 6, the outer tub (2) is used. Attach the drain valve (17) to the drain port formed at the bottom of the, connect the drain hose (16) to this drain valve (17), open this drain valve (17) and wash with the drain hose (16). The washing liquid in the tub (3) is drained out of the machine.

In the conventional example shown in FIG. 6, the lint filter (14) is attached to the inner bottom of the stirring blade (4), and lint is removed by the natural circulation action of the washing liquid generated by the stirring action of the stirring blade (4). to recover.

[Problems to be solved by the device]

As described above, since the circulation pump and the drain valve are configured as separate and independent components, separate mounting work is required even when they are taken into the washing machine, and the number of mounting work steps increases and the number of parts increases.

Also, because both the circulation pump and drain valve are directly fixed to the outer tub, vibrations of the outer tub that occur during washing and dehydration are directly transmitted to the circulation pump and drain valve, resulting in motor failure. Water leakage from the joint with the outer tank was easy to occur.

Furthermore, since the lint filter is installed at the upper part of the stirring blade or the bottom part of the stirring blade, the lint filter must be attached and detached each time the laundry is put in and taken out in the former case, and in the latter case. The hands had to be pushed all the way to the bottom of the washing tub, and in each case, handling was troublesome.

The circulation mechanism and the drainage mechanism share a drainage point mechanism from the washing tub, and as a common pump is used, for example, there is JP-A-58-94894.
Since the pump for forced drainage is used as a shared pump, it is necessary to branch the circulation hose and drainage hose on the discharge side of the pump, and to additionally provide a switching valve for each hose separately from the drainage valve. Becomes complicated.

The object of the present invention is to eliminate the inconvenience of the above-mentioned conventional example, paying attention to the fact that both the circulation pump and the drain valve have the same function in terms of taking in and draining the washing liquid, and by integrating both, the number of parts is reduced, An object of the present invention is to provide a washing machine in which the installation work process is unified to improve workability, water leakage can be prevented, and the lint filter can be easily attached and detached.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a washing machine having a washing tub provided in an outer tub arranged in an outer box, wherein a drain port is formed at the bottom of the outer tub, and one end can be connected to the drain port. A pump casing of a lint recovery circulation pump having a drain valve valve case integrally formed at the other end of the flexible connection hose is provided, and the drain casing is provided on one side of the pump casing. At the same time, form an overflow port and a drain port to prevent overflow from the washing tub, arrange a circulation pump on the other side, and form a drain port, and position it between the drain valve and the circulation pump. A drainage hose is connected to the drainage port on the drainage valve side, a circulation hose is connected to the drainage port on the circulation pump side, and the circulation hose is connected to this outside the outer tank. Start up along the outside tank The circulation flow path which communicates the parts and the upper is formed in the outer box, and also, to a subject matter that were provided with lint filter top panel in the middle circulation channel.

[Action]

According to the present invention, the drain valve and the circulation pump can be integrated by forming the valve case of the drain valve integrally with the pump casing of the circulation pump. Therefore, only by mounting the pump casing of the circulation pump, the drain valve integrated with the pump casing can be mounted, and the mounting work process is unified.

The pump casing is not directly fixed to the outer tank, and the flexible connecting hose is provided at a position apart from the pump casing in the middle of the circulation flow path, so that the vibration of the outer tank is not directly transmitted to the pump or the valve.

Further, since the lint filter is arranged on the top panel in the middle of the circulation flow path, it can be attached and detached at the upper part of the outer casing of the washing machine, which is easy to clean and has good workability.

Furthermore, when integrating the drainage valve and the circulation pump, it is not necessary to provide a separate switching valve or the like, and the structure is simple, and in addition, overflow from the washing tub can be prevented.

〔Example〕

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a vertical sectional side view showing an embodiment of a washing machine of the present invention, and FIG. 2 is a vertical sectional front view of a lint recovery circulation pump, which is an essential part of the washing machine, and a conventional example described with reference to FIGS. 5 and 6. The same constituent elements as those are designated by the same reference numerals.

The basic structure of the washing machine of the present invention is the same as the conventional one, and the outer tub (2) is suspended by the hanging rod (8) in the outer box (1), and the stirring wing is centered in the outer tub (2). Wash tub with (4) (3)
A motor (9) is provided below the outer tub (2), and the drive shaft of the motor (9) is agitated via a mechanism section (11) including a V-belt (10) and a reduction mechanism. It is connected to the washing shaft of the wing (4) and the dewatering shaft of the washing tub (3).

Further, a top panel (6) having a laundry inlet is formed in the upper part of the outer box (1), and the inlet is covered with a lid (7) so as to be openable and closable. In the figure, (5) is a balancer of a hollow ring formed on the upper edge of the washing tub (3), (13)
Is a water supply valve, and (19) is a water supply port. Both the water supply valve (13) and the water supply port (19) are arranged on the top panel (6).

In the washing machine having such a structure, a drain port (20) is formed at the bottom of the outer tub (2), and lint is collected at the other end of a flexible connection hose (15) having one end connected to the drain port (20). The pump casing (12) of the circulation pump for vehicle was connected.

This pump casing (12) is formed integrally with the valve case (24) of the drain valve (25) as shown in FIG. 2, and the valve (25) is arranged on the left side and the right side on the figure. An impeller (29) for a circulation pump is provided in the above, and an inflow port (36) connected to the connection hose (15) is provided at an upper portion of the impeller (29) located between the valve (25) and the impeller (29).

The structure of the valve (25) is, as is well known in the art, brought into close contact with the valve case (24) by the valve cap (26) and the compression spring (33) so that the valve (25) is positioned above the valve case (24). Has an overflow port (37) for preventing overflow from the washing tub (3), and a drainage port (38) is formed in the valve case (24) below the valve (25).

Further, in the figure, (27) shows a tension spring for pulling the valve (25), and (28) shows a pull rod.

On the other hand, the end of the pump casing (12) on the side where the impeller (29) of the circulation pump is arranged is closed by the casing retainer (31) through the packing (34), and the outside of the casing retainer (31) is covered. The drive shaft of the provided pump motor (30) is pressed through the oil seal (32) to the casing retainer (31).
And was connected to the rotating shaft of the impeller (29).

A drain port (39) for circulation is provided in the pump casing (12) so as to be located on the side of the impeller (29).
In the longitudinal side view of the pump portion of FIG. 4, (35) in the figure
Indicates the lid of the drain hole of the pump.

As described above, the inlet (36) of the pump casing (12) integrally formed with the valve case (24) is connected to the connection hose (15), and the drainage port (3) on the valve case (24) side is connected.
The drainage hose (16) was connected to 8), and the circulation hose (18) was connected to the drainage port (39) on the pump casing (12) side.

The other end of the circulation hose (18) rises outside the outer tub (2) along the outer tub (2), and joins with the water supply hose from the water supply valve (13) under the top panel (6). , The washing tub (3) and the outer tub (2) were connected to the water inlet (19) provided in the top panel (6).

Then, attach the lint filter (14) to the water supply port (19).

Next, usage and operation will be described.

For washing, the lid (7) is opened, clothes are put into the washing tub (3) through the inlet, and after a predetermined amount of detergent is put in,
The lid (7) is closed, the operation content is set by an operation switch (not shown), and the operation is started.

As a result, the water supply valve (13) is opened and water is automatically supplied from the water supply port (19) into the washing tub (3). When the amount of water supply reaches the set predetermined amount, the motor (9) is energized to rotate the stirring blade (4) and washing is performed by this stirring action.

At the same time, the pump motor (30) is also energized and driven, which causes the impeller (29) to rotate, and through the drain port (20), connection hose (15), and inlet port (36),
Washing tub (3), outer tub (2) to pump casing (12)
The impeller (29) pushes the wash water flowing into the drainage outlet (39) to the circulation hose (1).
8).

The washing water pushed up in the circulation hose (18) returns to the washing tub (3) from the upper water inlet (19), but passes through the lint filter (14) when discharged from the water inlet (19). , Here, the lint contained in the wash water is collected.

In this way, during the washing operation, the pump motor (30) is driven to forcibly circulate the wash water and pass the lint filter (14) to recover the lint. During this time, since the drain valve (25) is closed, all the wash water that has entered the pump casing (12) from the inflow port (36) is pushed out to the drain port (39) on the pump casing (12) side, It does not flow to the drain port (38) side of the valve case (24) side.

When the washing operation is finished and the drainage / dewatering process is started, the operation of the pump motor (30) is stopped, and the pulling rod (28) is pulled against the elasticity of the spring (33) by a driving device (not shown), As shown in the figure, the valve (25) is moved to the left so that the inflow port (36) and the drainage port (38) communicate with each other.

In this state, the pump motor (30) has stopped operating, so the outer tank (2) is drained (20) to the connection hose (1).
5) The washing water flowing into the valve case (24) through the inflow port (36) does not flow to the pump casing (12) side, but all flows to the drain port (38) and the drain hose (16). Is discharged to the outside of the machine via. In addition, overflow water also flows into the valve case (24) from the overflow port (37) and flows to the drain hose (16).

The outer tub (2) vibrates during the washing and dehydration processes, but the valve case (24) and the pump casing (12) integrated with the outer tub (2) are not directly fixed to the outer tub (2) and are flexible. Since it is arranged apart from the outer tub (2) via the flexible connection hose (15), the vibration of the outer tub (2) is not directly transmitted to the valve case (24) and the pump casing (12). Absent.

Also, in order to remove the lint accumulated in the lint filter (14) and clean the lint filter (14), the lint filter (14) is attached to the top panel (6), so that the lid (7) can be opened immediately. Easy to remove.

Note that the valve shape and pump shape are not limited to the above-described embodiments because various shapes are conceivable, and the shape of the valve case and the pump casing can be various shapes corresponding to the valve shape and the pump shape. .

[Effect of device]

As described above, in the washing machine of the present invention, since the valve case of the drainage valve is integrally formed with the pump casing of the circulation pump, only one case is enough and the valve case can be attached by simply attaching the pump casing. The number of parts and the installation work process can be reduced, and the work efficiency can be improved.

In addition, the pump casing is not directly fixed to the outer tub and is separated from this via a flexible connection hose, and since the number of connection points can be reduced, vibration of the outer tub can be directly transmitted to the pump motor and valve. In addition, the motor failure and water leakage from the joint with the outer tank can be prevented, and a highly reliable and safe product can be obtained.

Further, since the lint filter is also arranged on the top panel, it can be easily removed and cleaned.

When integrating the drainage valve and the circulation pump, it is not necessary to provide a separate switching valve or the like, the structure is simple, and in addition, overflow from the washing tub can be prevented.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a washing machine of the present invention, FIG. 2 is a vertical sectional front view of a lint recovery circulation pump, which is an essential part of the same, and FIG. 3 is a vertical sectional view in which the valve is opened. A front view, FIG. 4 is a vertical sectional side view of a pump portion, FIG. 5 is a vertical sectional side view showing a conventional example of a washing machine having a lint recovery device, and FIG. 6 is a vertical sectional side view showing another example of the same. . (1) …… Outer box, (2) …… Outer tub (3) …… Washing tub, (4) …… Stirring blade (5) …… Balancer, (6) …… Top panel (7) …… Lid , (8) …… Suspension rod (9) …… Motor, (10) …… V belt (11) …… Mechanical part, (12) …… Pump casing (13) …… Water supply valve, (14) …… Lint filter (15) …… Connection hose, (16) …… Drain hose (17) …… Drain valve, (18) …… Circulation hose (19) …… Water inlet, (20) …… Drain port (21) …… Washing shaft, (22) …… Dehydration shaft (23) …… Fixing metal fittings, (24) …… Valve case (25) …… Valve, (26) …… Valve cap (27) …… Tension spring, ( 28) ...... Pull bar (29) ...... Impeller, (30) ...... Pump motor (31) ...... Casing holder, (32) ...... Oil seal (33) ...... Compression spring, (34) ...... Packing (35) …… Lid, (36) …… Inlet (37) …… Overflow port, (38) (39) …… Drainage port (40) …… Circulation pump

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Takeshi Saito 1-1-1, Yamate, Funabashi-shi, Chiba Nihonken Iron Co., Ltd. Funabashi Manufacturing Co., Ltd. (72) Eiichi Odaka 1-1-1, Yamate, Funabashi-shi, Chiba No. 1 in the Funabashi Works of Nippon Ken Iron Co., Ltd. (72) Yumiko Kauchi 1-1-1, Yamate, Funabashi City, Chiba Nihon Ken Iron Co., Ltd. (56) Reference JP-A-58-94894 (JP, A)

Claims (1)

[Scope of utility model registration request] 1. A washing machine having a washing tub provided in an outer tub arranged in an outer box, wherein a drain port is formed at the bottom of the outer tub and one end is connected to the drain port. A pump casing of a lint recovery circulation pump integrally formed with a valve case of a drain valve is provided at the other end of the pump casing. To form an overflow port and a drain port to prevent the overflow of water, and to arrange a circulation pump on the other side, and to form a drain port, and locate it in the middle of the drain valve and the circulation pump, and connect it to the connection hose. Form the connecting inlet, connect the drain hose to the drain on the drain valve side, connect the circulation hose to the drain on the circulation pump side, and raise the circulation hose along the outside of the outer tank. , Connect the bottom and top of the outer tank The circulation flow path formed in the outer box, also,
A washing machine in which a lint filter is arranged on the top panel in the middle of the circulation flow path.