JPS6221280Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dehydrating and washing machine configured to perform at least one of washing and rinsing by rotating a rotary tub.

In normal dehydrating and washing machines, the electromagnetic device used to operate the brake device for braking the rotary tank is also used as the source of operation for the drain valve, and is used to release the brake on the rotary tank and open the drain valve. are performed simultaneously. However, for the purpose of preventing cloth damage, in the case of a dehydrating and washing machine that rotates a rotary tub and performs washing or rinsing with a weak stream of water, the brake device and drain valve are operated by a single electromagnetic device. , when releasing the brake to drive the rotating tub for washing or rinsing,
At the same time, the drain valve is also opened, and as a result, the water stored in the rotary tank is discharged, so an electromagnet device dedicated to the drain valve must be provided separately from the electromagnet device for the brake device, which increases manufacturing costs. It was hot.

Therefore, an object of the present invention is to enable the operating source of the drain valve to be used as the operating source of the brake device, and to eliminate the risk of the washing and rinsing water in the rotating tank being discharged even if this is done. It is to provide a washing machine that can be used for both dehydration and dehydration.

An embodiment of the present invention will be described below based on the drawings. First, in Fig. 1, reference numeral 1 denotes an outer box of a washing machine with a dehydrating function.The inside of this box is divided into upper and lower parts by a partition plate 2, and a rotating tank 4 is arranged in the upper chamber 3 so as to use this as an outer tank. It is set up. The rotating tank 4 has a non-porous tapered shape that gradually expands upward, and is configured to pump up the water inside by rotational centrifugal force and discharge it into the chamber 3 from an opening at the upper end. The water discharged into the chamber 3 is discharged from a drain port 5 formed in the partition plate 2 to the outside of the machine via a drain hose 6. On the other hand, 7 is a suspension mechanism that swingably supports the rotary tank 4, and a housing 9 with a substrate 8 disposed and fixed thereon has a second
As shown in the figure, the drive shaft 10 of the rotating tank 4 is inserted and supported. Reference numeral 11 denotes a rotating shaft inserted and supported by the drive shaft 10, and a stirring blade 12 disposed at the inner bottom of the rotating tank 4 is directly connected to the upper end of this rotating shaft. The rotation of the motor (not shown) is transmitted to the pulley shaft 14 by the belt transmission mechanism 13, and the rotation of the pulley shaft 14 is selectively transmitted to the drive shaft 10 and the rotation shaft 11 by the action of the clutch mechanism 15. It's getting old. Reference numeral 16 denotes a brake device for braking the rotary tank 4, which uses an electromagnetic device (not shown) as its operating source. The electromagnetic device is also used as an operating source for the clutch mechanism 15, as is well known in the art.

In FIG. 2, reference numeral 17 denotes a casing fitted to the upper end of the housing 9. Both upper and lower openings of the casing are sealed by seals 18, 18 that are in sliding contact with the drive shaft 10, and the inside is connected to the drive shaft 10. The rotary tank 4 is
This communication is maintained at all times regardless of the rotation of the rotary tank 4. 20 is a bellows-shaped first pipe corresponding to a water level detection path;
One end thereof is connected to the casing 17, and the other end is connected to the water inlet body 21a of the drain valve 21. The water inlet body 21a of the drain valve 21 has a branch port 21b.
is provided protrudingly, and the first pipe 20 is connected to the branch port 2.
1b and a bellows pipe 22 connected thereto, it communicates with an air trap 23. The air trap 23 communicates with a water level switch 26 in an operation box 25 via a tube 24. Also, the drain valve 21
The valve body 27 is connected via a valve stem 28 and a tension spring 29 to an electromagnetic device of the brake device 16, so that the electromagnetic device can actuate the clutch mechanism 15, the brake device 16 and the drain valve 21. Acts as a source. 30 is a bellows-shaped second pipe corresponding to a residual water discharge channel, one end of which is connected to the water outlet body 21c of the drain valve 21, and the other end is connected to the drain port 5 of the chamber 3 of the outer box 1. Branched socket 3
It is connected to 1. Reference numeral 32 denotes a valve fitted into the socket 31. This valve 32 is formed by integrally forming a valve plate 34 at one end of a plastic cylinder 33, and the valve plate 34 is normally closed by its own elastic force. The opening at one end of the cylinder 33 is open (see the solid line in Figure 3), and when it receives water pressure above a predetermined pressure, it rotates in the direction of arrow A and closes the opening at one end of the cylinder 33 (see the solid line in Figure 3). (See the two-dot chain line in Figure 3).

Next, the operation of the above configuration will be explained.

Washing process This washing process is performed with the electromagnetic device powered off, and the brake device 16 brakes the rotating tank 4.
The clutch mechanism connects the rotating shaft 11 to the motor, and the drain valve 21 is closed. Therefore, when tap water is supplied into the rotary tank 4 through a water supply valve (not shown), the water first flows into the first pipe 20 through the casing 17, and then flows through the first pipe 20 and the casing 17 in this order. After the tank is filled with water, the water level in the rotating tank 4 gradually rises. When the water level in the rotary tank 4 reaches a predetermined water level, the water level switch 26 is activated in response to the air pressure in the air trap 23 according to the water level, and the water supply is stopped, and the motor is activated to move the stirring blades 12 to a predetermined level. It is rotated in forward and reverse directions every hour to perform a washing operation using detergent.

Draining Step When the washing step is completed, the electromagnetic device is energized, the brake device 16 releases the brake on the rotary tank 4, the clutch mechanism 15 connects the drive shaft 10 to the motor, and the drain valve 21 opens. When the drain valve 21 is opened, the water in the first pipe 20 flows into the second pipe 30 through the drain valve 21, but since the head of the water stored in the rotating tank 4 acts on the inflow water, The valve plate 34 of the valve 32 receives the water pressure and moves in the direction of arrow A.
direction, and closes the opening at one end of the cylindrical body 33 and the outflow side of the second pipe 30. In this state, the motor starts and drives the rotary tank 4 to rotate continuously, so that the water in the rotary tank 4 is pumped up by rotational centrifugal force and discharged from the upper end opening into the chamber 3 of the outer box 1. It is discharged outside the machine via the drain port 5 and the drain hose 6. Then, when the water level in the rotating tank 4 drops to the extent shown by the two-dot chain line B in FIG. 34 is displaced in the opposite direction of arrow A by its own elastic restoring force, opening one end of the cylindrical body 33 and thus opening the outflow side of the second pipe 30.
As a result, the water inside the upper end of the drive shaft 10, the casing 17, and the first and second pipes 20, 30 is discharged to the outside of the machine via the drain hose 6, and at the end of the drain operation. There are no problems with water remaining in these.

Rinsing Step When the draining step is completed, the electromagnetic device is temporarily cut off, and water is supplied into the rotating tank 4 in this state. Therefore, water is stored in the rotary tank 4 in the same way as in the washing process, and when this reaches a predetermined water level, the water supply is stopped. In the case of the rinsing stroke, the electromagnetic arrangement is energized at the same time, so that the clutch mechanism 15, the brake device 16 and the drain valve 21 are in the same state as in the drain stroke. Then, the water in the first pipe 20 flows into the second pipe 30 through the opened drain valve 21, but since the water pressure of the water stored in the rotating tank 4 is acting on the inflow water, The valve plate 34 of the valve 32 receives the water pressure and is displaced in the direction of arrow A so as to close the opening at one end of the cylindrical body 33. Therefore, even if the drain valve 21 is opened, the water in the rotating tank 4 is not drained. There will be no inconvenience caused. Now, when the electromagnet device is energized as described above, the motor starts at the same time,
The rotating tank 4 is driven to rotate intermittently. This rotating tank 4
Due to its rotation, stirring blades 12 are formed in the rotating tank 4.
A weaker water stream is generated than in the case of rinsing. Note that during this rinsing operation, the rotating tub 4 is driven intermittently and its rotational speed does not become very high, so there is no risk that the water in the rotating tub 4 will be pumped up and discharged from the upper end opening.

Drainage/Dewatering Process When the rinsing process is completed, the rotary tank 4 is continuously driven to rotate by the motor while the electromagnetic device is energized. As a result, the water in the rotating tub 4 is discharged into the chamber 3 of the outer box 1 in the same way as in the draining process, and thereafter, the water in the laundry is shaken off and dewatering is performed. After the water level in the rotating tank 4 drops to the level shown by the two-dot chain line B in FIG. 1, the valve plate 34 of the valve 32 maintains the open state shown by the solid line in FIG. 3. , drive shaft 1
The water inside the upper end of 0, the casing 17, and the first and second pipes 20, 30 is discharged to the outside of the machine via the drain hose 6, and water remains in these at the end of the drain/dewatering process. There is no such possibility.

Incidentally, as in this embodiment, if washing is performed by rotating the stirring blade 12 and using a relatively strong water stream, and rinsing is performed by rotating the rotary tank 4 and using a relatively weak water stream, it is possible to remove dirt. Rinsing is performed using a strong stream of water, and rinsing is performed using a weak stream of water, which is quite effective just by passing water through the laundry, which is extremely rational in that it can sufficiently remove dirt while preventing fabric damage. However, if a longer washing time is allowed, washing may also be performed by rotating the rotating tank 4. Furthermore, washing may be performed by rotating the rotating tank 4, and rinsing may be performed by stirring. This may be done by rotating the blades 12.

As explained above, the present invention has a water level detection path that always maintains communication with the rotating tank, and a remaining water drain path connected via a drain valve that receives water pressure in the rotating tank and closes to reduce the water pressure. As a result, even if the drain valve is opened while water for washing or rinsing is stored in the rotating tank, the valve does not release the remaining water. In order to close the discharge channel and prevent water from flowing out of the rotating tank,
When rotating the rotary tank for washing or rinsing, there is no problem in using the operating source of the brake device that releases the brake as the operating source of the drain valve. Therefore, it is possible to use the drain valve separately from the operating source of the brake device. It is not necessary to provide a dedicated operating source, reducing costs. Furthermore, when the water level in the rotating tank decreases due to so-called pumping and drainage, the valve opens and drains the water in the water level detection path and residual water discharge path. Because it discharges
There is no problem of residual water.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall vertical cross-sectional view, FIG. 2 is an enlarged vertical cross-sectional view of main parts, and FIG.
The figure is an enlarged longitudinal sectional view of the valve portion. In the figure, 3 is the chamber of the outer box (outer tank), 4 is the rotating tank, and 6
is a drainage hose, 10 is a drive shaft, 11 is a rotating shaft, 1
2 is a stirring blade, 16 is a brake device, 20 is a first pipe (water level detection path), 21 is a drain valve, 23 is an air trap, 26 is a water level switch, 30 is a second pipe (residual water discharge path), 32 is a valve, and 34 is a valve plate.

Claims (1)

[Scope of utility model registration request] A rotating tub for both washing and dewatering, which is disposed in an outer tub and performs at least one of washing and rinsing by generating water flow through rotation of the tub, and when draining water is discharged from the upper part into the outer tub by rotational centrifugal force. and a water level detection path which is provided in such a way that it always maintains communication with the inside of the rotating tank regardless of its rotation, and which communicates with an air trap for operating a water level switch and which is connected to a residual water discharge path via a drain valve. 2. A dehydrating and washing machine, characterized in that the residual water discharge path is provided with a valve that closes in response to water pressure in the rotating tub and opens when the water pressure decreases.