JPS5818120B2 - dehydration washing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dehydrating washing machine having a dehydrating/washing tub in a water receiving tank, the peripheral wall of which is non-porous except for at least the vicinity of the upper end.
To reliably supply water to a washing tub up to a specified water level with a simple structure.

. Conventionally, when supplying water to a washing tub with a non-porous surrounding wall as described above, water was supplied for a certain period of time to reach a specified water level, or a water passage was provided from the bearing part to trap the water in the washing tub as an air trap. He was guiding the person to the area and operating the pressure switch.

But in the former case. Because water supply depends on time, it is difficult to always reliably supply water to a specified water level due to changes in tap water pressure, etc., and in the latter case, there are problems such as the structure of the bearing part being complicated.

The present invention has been made in view of this point, and will be explained below based on the drawings shown as one embodiment.

Reference numeral 1 denotes a water receiving tank which also serves as a machine frame fixed on a base 2, and a dewatering/washing tank 3 is installed inside.

This washing tub 3 only has a large number of discharge holes 4 in the upper part, and its peripheral wall is a non-porous wall.

Reference numeral 5 denotes rotary blades rotatably installed inside the washing tub 3. During washing, only the rotary impeller 5 is rotated, and during draining and spin-drying, the washing tub 3 rotates at high speed and uses centrifugal force to drain the water in the premises. The water is raised along the tank wall and discharged into the water receiving tank 1 through the discharge hole 4.

6 is a drain port of the water receiving tank 1, and a drain channel 8 has a drain solenoid valve 7.
It is connected to the outside of the machine.

Reference numeral 9 denotes a bearing case that pivotally supports the rotary blade shaft 10 and the washing tub shaft 11. A drive motor 13 is attached to a mounting arm 12 that protrudes from the bearing case 9. Clutch that controls transmission (not shown)
is built in, and when doing laundry, this clutch is disengaged and only the rotary blade 5 is rotated by the 1 drive motor 13, and when draining or spin-drying, the clutch is operated and the washing tub 3 is also rotated.

Further, support arms 14 protrude radially from the bearing case 9, and an elastic support mechanism 16 provided between the support arms 14 and a support plate 15 fixed to the upper part of the base 2 supports a vibration system such as a washing tub. is supported in an anti-vibration manner.

Reference numeral 17 denotes a vibration isolating rubber which is equipped with an oil seal 19 that makes the washing tub shaft 11 and the bottom opening 18 of the water receiving tub 1 watertight.

20 is a water supply channel that supplies water between the washing tub 3 and the water receiving tank 1, and a water supply solenoid valve 21 is interposed therebetween.

An air trap 22 is integrally provided at the bottom of the water receiving tank, and the pressure of this air trap 22 is transmitted to a water level switch 24 via a pressure hose 23. When a predetermined amount of water is supplied between the two tanks 1.3, the water level switch 24 is activated. It operates to close the water supply solenoid valve 21 and stop water supply.

25 is a water pump that sends the water stored between the two tanks 1 and 3 to the washing tub 3; 26 is a suction pipe that communicates with the water receiving tank;
27 is a discharge pipe opened toward the washing tub.

28 is the legitimate child of the program timer.

Figure 2 is a program diagram showing the relationship between each process and control elements.
In the case of , it indicates that the valve is open, the water pump 25 and the 1-drive motor 13 indicate that it is being driven, and the clutch (not shown) indicates that it is operating to rotate the washing tub 3. It is something.

Next, the operation will be explained based on this program diagram.

When the program timer is set to the "water supply process", the water supply solenoid valve 21 is energized and opened to supply water between the two tanks 1 and 3.

When water is supplied to the specified water level H, the water level switch 24 operates to close the water supply electromagnetic valve 21 to stop water supply, and at the same time, the water supply pump 25 is driven 1 and all the water stored between the tanks 1 and 3 is washed. Water is sent into tank 3.

The water supply process is completed by supplying water between the two tubs and sending water to the washing tub, and the water level in the washing tub becomes H'.

When the water supply pump 25 is stopped and the water supply process is completed, the drive motor 13 is driven to rotate the rotary blades 5 to perform washing.

When the washing process is completed, the drain electromagnetic valve 7 is energized and opened, and a clutch (not shown) is operated to rotate the washing tub 3 at high speed, and the water in the tub is discharged from the drain hole 4 to the water receiving tank 1. However, the water discharged into this water tank is discharged to the outside of the machine through a drainage channel 8.

After this drainage process is completed, the water supply process is carried out again.
Next, a rinsing process is performed in the same manner as the washing process, and finally a draining process is performed, and the washing tub is rotated to perform dewatering, thereby completing the entire process.

In order to set the water level of the washing tub in multiple stages, it is sufficient to provide a plurality of water level switches each operating at a different water level so that the water level switch can be arbitrarily selected.

Alternatively, a switching valve may be provided in the discharge pipe 27 of the water pump 25, and during the drainage process, this switching valve may be switched to connect the discharge pipe to the outside of the machine, and the water pump may be driven to perform drainage.

In this case, the drain electromagnetic valve 7 and the drain channel 8 are eliminated.

As described above, in the present invention, a predetermined amount of water is once stored between the dewatering/washing tub and the water receiving tank, and the stored water is sent to the washing tub by a pump to supply water to the washing tub. Even if the surrounding wall of the dewatering/washing tub is non-porous, water can be reliably supplied to the specified water level, and the water level can be detected simply by detecting the water level between the washing tub and the water receiving tank. The structure of the bearing part does not become complicated.

Also, the space between the water receiving tank and the washing tank is used instead of storing the water supplied to the washing tank in advance in a separate tank, so the overall size of the machine becomes larger. It has excellent effects such as being compact and inexpensive.

[Brief explanation of drawings]

The drawings show a dehydrating washing machine of the present invention, with FIG. 1 being a front longitudinal sectional view and FIG. 2 being a program diagram. 1...Water tank, 3...Dehydration/washing tank,
21... Water supply solenoid valve, 24... Water level switch, 25... Pump.

Claims (1)

[Scope of Claims] 1. A dewatering/washing tank with a non-porous peripheral wall except for at least the vicinity of the upper end is provided in a water receiving tank, and when water is supplied, a predetermined amount of water is stored between the washing tub and the water receiving tank, A dehydrating washing machine in which the stored water is sent to the washing tub by a pump. 2. The dewatering device according to claim 1, wherein a water level switch is provided to detect the water level between the washing tub and the water receiving tank, and the water level switch stops the water supply between the two tubs and drives the pump. washing machine. 3. The dehydrating washing machine according to claim 1, wherein the water receiving tank also serves as a machine frame.