JPS5917276Y2 - washing machine - Google Patents

Description

[Detailed description of the invention] This invention utilizes the discharge pressure of the pump to forcefully spray the washing water supplied into the washing tub from the injection nozzle into the washing tub, and the sprayed washing water This invention relates to a washing machine that performs washing by generating water flow, and is intended to provide a structure that can reliably discharge residual water in a pump casing that constitutes the pump.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, 1 is the main body of a two-tub washing machine, 2 is a washing tank with a pulsator 3 at the bottom, 4 is a dehydration tank with a rotatable dehydration basket 5, and 6 is a panel section that houses electrical components such as a time switch. , 7 is a drain port provided at the bottom of the washing tub 1 with a drain filter 8 detachably attached thereto, 9 is a water intake port provided at the bottom of the washing tub 2, and the pump 1 is connected via a water suction hose 10.
It communicates with the suction port 11a of No.1.

12 is a pump motor that drives the pump 11; 13 is an injection nozzle installed on the upper side wall of the washing tub 2; this injection nozzle 13 communicates with the pump 11 and the discharge port 11b via a discharge hose 14.

15 is a drain hose A connected to the drain lower, 16 is a three-way elbow, the upper end opening of this three-way elbow 16 is connected to the drain hose A15, and one horizontal end opening is connected to the drain cock via the drain hose B17. It is connected to 18.

This drain cock 18 is located below the pump 11.

Next, the structure of the pump 11 will be explained based on FIG.
0 is a pump casing in which a discharge port 11b of the pump 11 is formed, and an auxiliary drain pipe 21 is integrally formed in the lower part of this pump casing 20.

The auxiliary drain pipe 21 communicates with the pump casing 20 via a drain hole 23 formed near the axis of the pump runner 22.

Further, the auxiliary drain pipe 21 is connected to the other end opening of the three-way elbow 16 shown in FIG. 1 via an auxiliary drain hose 24, and communicates with the drain cock 18.

25 is a seal ring between the pump casing 20 and the lid 19; 26 and 27 are sealing materials and metal provided on the central boss portion 20' of the pump casing 20; and 28 is an insulating bush press-fitted into the shaft 29 of the pump motor 12. A tubular shaft 30 is press-fitted into the outer periphery of the insulating bushing 28.

Further, this tubular shaft 30 is connected to the sealing material 26 and the metal 2.
7 is inserted therethrough, and a pump runner 22 disposed at the upper end of the shaft 29 of the pump motor 12 is rotatably held.

31 is a seal ring interposed between the upper end of the tubular shaft 30 and the pump runner 22, and 32 is a mounting board for the pump 11, which has a rising opening 33 projecting upward in the center.

A cap 34 is inserted through the shaft 29 of the pump motor 12 and fixed to the lower end of the insulating bushing 28, and the outer periphery of the cap 34 overlaps to cover the rising opening 33 of the mounting board 32.

In the above configuration, when washing is done in the washing tub 2,
First, laundry and detergent are put into the washing tub 2, and washing water is supplied.

When the pump runner 22 is rotated in this state,
The washing water in the washing tub 2 is sucked into the pump 11 from the water suction port 9 via the water suction hose 10, and the drawn washing water is sent to the injection nozzle 13 via the discharge hose 14 by the discharge pressure of the pump 11. The water is then sprayed from the spray nozzle 13 into the washing tub 2 again to generate a washing water stream.

Due to the generation of this water flow, the laundry is agitated and washed.

Also, when draining the washing tub 2, use the drain cock 18.
Drainage is carried out by opening the
The washing water in the washing tub 2 is drained to the outside from the drain lower, and also enters into the pump 11 from the water intake port 9.

The water that has entered the pump 11 reaches the inside of the drain cock 18 via an auxiliary drain pipe 21 formed at the lower part of the pump casing 20, and is quickly discharged to the outside.

FIG. 3 shows an application example of the present invention, in which an auxiliary drain pipe 21a is opened at both ends at the bottom of the pump casing 20.
It is integrally formed.

One end opening of this auxiliary drain pipe 21a is communicated with the drain cock 18 via an auxiliary drain hose 24a,
The opening at the other end is connected to the drain lower of the washing tub 2 via a drain hose 15a.

By adopting such a configuration, the three-way elbow 16 shown in FIG. 1 can also be eliminated, thereby streamlining the piping.

As is clear from the above embodiments, according to the present invention, a drain cock is provided for controlling the drainage of washing water discharged through the drain port at the bottom of the washing tub, and this drain cock is located below the pump casing. In addition, an auxiliary drain pipe communicating with the pump casing is integrally formed in the lower part of the pump casing, and an end opening of the auxiliary drain pipe is communicated with the drain cock, so that the washing water in the washing tub is drained from the drain port. When draining water through the pump casing, the washing water that gets into the pump casing can be quickly discharged to the outside.
Therefore, it is possible to prevent freezing in winter due to residual water inside the pump casing, and since the auxiliary drainage pipe is integrally formed with the pump casing, it is structurally simplified. Become.

Furthermore, the inside of the pump casing is subject to considerable high pressure when the pump runner rotates, but since the auxiliary drain pipe is integrally formed with the pump casing, there is no seam between the pump casing and the auxiliary drain pipe, which generally tends to occur. Accidents of water leakage from joints can be prevented.
Further, there is an effect that the pump pressure does not decrease and the injection pressure from the injection nozzle can be made stable.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a two-tub washing machine showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the pump section of the same washing machine, and Fig. 3 is a diagram of the pump section showing an example of application of the present invention. FIG. 2...Washing tub, 7...Drain port, 12.
... Pump motor, 13 ... Injection nozzle, 18 ... Drain cock, 20 ... Pump casing, 22 ... Pump runner, 21
．． 21a...Auxiliary drainage pipe.

Claims (2)

[Scope of utility model registration request] (1) A pump equipped with a pump runner that absorbs washing water in the washing tub through a water intake port at the bottom of the washing tub, and injects the absorbed washing water back into the washing tub from a spray nozzle via a discharge hose. The washing machine includes a casing, a pump motor that drives the pump runner, and a drain cock that controls drainage of washing water discharged through a drain port at the bottom of the washing tub, and the drain cock is located below the pump casing. , and an auxiliary drainage pipe communicating with the pump casing is integrally formed in the lower part of the pump casing,
A washing machine in which an end opening of the auxiliary drain pipe is communicated with the drain cock. (2) The auxiliary drain pipe is open at both ends, and the opening at one end communicates with the drain cock, and the opening at the other end communicates with the drain outlet of the washing tub. washing machine.