JPH031040B2 - - Google Patents

Description

[Detailed description of the invention] (b) Industrial application fields The present invention relates to a washing machine with a water tank.

(B) Prior Art A washing machine with a water storage tank that precedes the present application was proposed in Utility Model Application No. 111307/1983, and this will be explained based on FIG. 2.

1 is a machine frame on which an outer tank 2 (corresponding to a washing tank) is suspended for vibration isolation, 3 is an inner tank rotatably arranged inside the outer tank 2, and 4... is a hole in the peripheral wall of the inner tank 3. dehydration hole, 5
is a balance ring, and 6 is a large-diameter mountain-shaped rotor blade rotatably disposed at the center of the bottom of the inner tank 3. On the outer bottom surface of the outer tank 2, the rotor blade 6 is mounted at a low speed (approximately
A drive motor 7 and a bearing case 8 are provided to intermittently rotate the rotating blade 6 and the inner tank 3 in one direction at high speed. Further, a drain port 9 of the inner tank 3 is provided on the bottom surface of the outer tank 2, and the drain port 9 is connected to a bellows-shaped drain hose 12 via a drain valve 10 and a drain channel 11.
Reference numeral 13 denotes a solenoid that opens the drain valve 10 when energized, and when energized, operates a clutch device (not shown) to transmit the rotation of the drive motor 7 to the rotor 6 and the inner tank 3. 3. Release the brake device (not shown). Reference numeral 14 denotes an overflow port provided in the outer tank 2, which connects to the drainage channel 11 via the overflow channel 15.
is connected to.

Reference numeral 16 denotes a water tank attached to the side surface of the machine frame 1, the bottom of which is connected to the drain port 9 via a connecting valve 17 and a connecting waterway 18. A reversible pump 19 is provided at a position upstream of the valve 17 in the connecting waterway 18, that is, at the bottom of the water tank 16, and is driven by a pump motor 20. Note that the connecting waterway 18 communicates with the drainage channel 11 via the drainage valve 10. Further, the detergent liquid and water in this water storage tank 16 are drained through a drain valve 10 and a connecting valve 17.
Drainage occurs when the water is opened.

When the pump 19 is rotated in the normal direction with the drain valve 10 closed, the liquid in the inner tank 3 (outer tank 2) is transferred to the water tank 16, and when the pump 19 is rotated in the reverse direction, the liquid in the water tank 16 is transferred to the inner tank 3.
(outer tank 2).

In addition, 21 is an upper lid for opening and closing the upper opening of the inner tank 3;
22 is a lid of the water tank 16, and 23 is a water supply port connected to a water supply channel via an electromagnetic water supply valve. Also,
A liquid level switch (not shown) for detecting the water level in the inner tank 3 is connected to the outer tank 2 via an air trap, and a liquid level switch (not shown) for detecting whether there is liquid in the tank is connected to the water storage tank 16. A surface switch 24 is provided.

Reference numeral 25 denotes an operating section, and within this operating section 25, operating parts for controlling each process of the washing machine are arranged.

Now, since the water storage tank 16 has a smaller capacity than the outer tank 2, when liquid is transferred from the outer tank 2 to the water storage tank 16, the liquid may overflow from the water storage tank 16. Therefore, as a countermeasure, an overflow tank 26 is formed between the water storage tank 16 and the outer tank 2, and overflow water from the water tank 16 is returned to the outer tank 2.

However, the transfer of the liquid from the outer tank 2 to the water storage tank 16 ends when the liquid level switch that detects the water level in the inner tank 3 is reset, or several seconds after the reset, but as described above, In the case of the liquid return method, the liquid is returned to the outer tank 2 before the liquid level switch is reset, and since the liquid level switch is not reset, the liquid may circulate.

(c) Problems to be Solved by the Invention The present invention aims to provide a highly reliable washing machine in which the liquid is transferred from the washing tank to the water tank in a washing machine with a water storage tank. That is.

(d) Means for Solving the Problems The present invention is a washing machine with a water storage tank in which overflowing water from the water tank is guided to an overflow channel provided in a part of the washing tank by a conduit.

(e) Effect The present invention is based on the means described in (e) above, and in transferring liquid from the washing tub to the water storage tank, overflowing water that cannot be stored in the water storage tank is discharged without returning to the washing tub. Therefore, the liquid transfer is surely completed.

(F) Embodiment An embodiment of the present invention will be described based on FIGS. 1 and 2. However, the same parts as in the conventional example are given the same reference numerals, and the explanation will be omitted.

An overflow channel 15 is formed by protruding a portion of the upper wall of the outer tank 2. One end of the overflow channel 15 communicates with the inside of the outer tank 2 through the overflow port 14, and the other end communicates with the drainage channel 11 through an overflow pipe 15a.

Additionally, an annular outer tub cover 28 with a clothes slot 27 formed in the center is attached to the upper opening of the outer tub 2 to prevent laundry from falling between the outer tub 2 and the inner tub 3. are doing. Furthermore, communication ports 29 and 29a are formed in the outer tank cover 2 to communicate the surface of the outer tank cover 2 with the overflow channel 15.

The overflow groove 26 is installed between the upper part of the water tank 16 and the upper part of the outer tank cover 28, and the water overflowing from the water tank 16 passes through the overflow groove 26, flows over the outer tank cover 28, and reaches the inner tank 3. Fall inwards.

Now, in the outer tank cover 28, an outer circumferential rib 30 is integrally provided on the outer circumferential edge thereof, and an inner circumferential rib 31 is provided on the inner circumferential edge and in the vicinity of the overflow groove 26. Further, a rib 32 that connects the outer circumferential rib 30 and the inner circumferential rib 31 is erected to provide a water guide groove 33 in the form of a blind alley surrounding the communication ports 29, 29a. (In other words, the overflow groove 26,
The water guide groove 33 and the communication ports 29, 29a constitute a water channel. ) The operation will be explained based on this configuration.

After washing or rinsing is completed, the washing liquid in the outer tub 2 and the inner tub 3 is transferred to the water storage tank 16 side. At this time, the capacity of the outer tub 2 is larger than the capacity of the water storage tank 16, but for example, when there is a large amount of laundry, a large amount of washing liquid soaks into the laundry, so the capacity of the water storage tank 16 is sufficient to transfer the liquid.

However, when the water level is high and there is little laundry, etc.
There are cases where the transferred liquid is larger than the capacity of the water storage tank 16. At this time, the liquid overflowing from the water tank 16 passes through the overflow groove 26 and falls onto the outer tank cover 28.
The water that has fallen onto this outer tank cover 28 is
A part of it climbs over the rib 31 and falls into the inner tank 3, and the rest passes through the water guide groove 33 and the communication ports 29, 29.
It is discharged from a through an overflow channel 15.

In this way, for example, if the overflowing water from the water storage tank 16 were to be directly returned to the inner tank 3, the liquid would simply circulate and the liquid level switch would not be reset.However, in this embodiment, the water level switch is not reset. As part of the overflowing water is discharged, the liquid level in the inner and outer tubs 2 and 3 will surely drop, and the above-mentioned situation will not occur. Once the time has elapsed, the liquid transfer will stop even if the liquid level switch is not reset, but this will only unnecessarily lengthen the time, so draining some of the overflowing water from the water tank 16 will stop the liquid level switch. The reset was accelerated and the process time was shortened.

In this embodiment, a water guide groove 33 is provided on the outer tank cover 28.
Although some of the overflow water was channeled by forming
For example, the overflow groove 26 may be connected directly to the overflow channel 15 to drain all overflow water.

(G) Effects of the Invention In a washing machine with a water storage tank, the present invention drains overflowing water from the water storage tank outside the machine when liquid is transferred from the washing tank to the water storage tank, so that all overflowing water from the water storage tank is drained to the washing tank. Compared to the case where the liquid is returned to the inside, there is no possibility that the liquid is circulated and the liquid transfer is not completed, and a highly reliable washing machine can be provided.

[Brief explanation of drawings]

Figure 1A is a plan view of essential parts of the present invention, Figure 1B is a sectional view taken along line A-A' in Figure 1A, Figure 1C is a BB' sectional view taken in Figure 1A, and Figure 1C is a sectional view taken along line BB' in Figure 1A. Figure 2 is a cross-sectional view taken along the line C-C' in Figure A, and Figure 2 is a sectional view of the main parts of the washing machine with a water tank. 1...Machine frame, 2...Outer tank (washing tub), 15...
Overflow channel, 16...Water tank, 26...Overflow ditch, 2
9, 29a...Communication port, 33...Water guide groove.

Claims (1)

[Claims] 1. A machine frame, a washing tub installed inside the machine frame, an overflow channel provided in a part of the washing tub for discharging overflow water in the washing tub to the outside of the machine, and a juxtaposition of the machine frame. a water storage tank, a means for transferring liquid from the washing tank to the water storage tank, an annular cover provided at the upper end of the washing tank, a communication port provided in the cover and communicating with the overflow channel, It is characterized by comprising an overflow groove provided in the upper part of the water storage tank to guide overflow water from the water storage tank onto the cover, and a water guide groove provided in the cover to guide water from the overflow groove to the communication port. A washing machine with a water tank.