JPS63281694A - Dehydrating washing machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention provides a system in which a balance ring is attached to the upper side wall of an inner tank for both washing and dewatering, which is rotatably provided in a water receiving tank. This invention relates to a dehydrating and washing machine comprising:

(Prior Art) In a conventional washing machine with a dehydrating function, a lint filter captures lint in washing water during washing operation.
There is a system in which a water channel extending vertically is provided on the inner wall of the inner tank, a lint filter is attached to the discharge port of the water channel, and washing water is sent to the lint filter through the water channel by the pump action of an agitator. The specific structure of the water channel in this case is that the side opening of the vertical groove formed in the inner wall of the inner tank is closed by a cover, and the upper opening of the vertical groove is closed by a balance ring screwed to the upper part of the side wall of the inner tank. The discharge port is formed by covering the bottom of the discharge port.

However, in the above-mentioned conventional structure, the balance ring is screwed to the inner tank, which has the drawback that the screwing operation is time-consuming and assembly efficiency is reduced.

Therefore, in order to save the trouble of screwing, a structure in which the balance ring is welded to the inner tank has been considered.

However, if the balance ring is welded to the inner tank, the following problems arise in terms of drainage. In other words, during dewatering, the water channel is rotated at high speed together with the inner tank, so
During the dehydration operation, a portion of the water to be drained rises along the vertical grooves in the water channel due to rotational centrifugal force. At this time, if the balance ring is screwed to the inner tank as in the past, a slight gap will be formed at the joint between the vertical groove and the balance ring, and this gap will act as a drain during dewatering. will be fulfilled. However, if the balance ring is welded to the inner tank, the joint between the vertical groove and the balance ring will be completely sealed, so no water in the channel will be drained during dewatering operation and will remain. After the dehydration is completed (after the inner tank stops rotating), the remaining water will flow into the water receiving tank. However, since the drain valve is closed at the same time as the dewatering is completed, the water that flows down from the waterway into the water tank after the dewatering is completed accumulates around the drain valve.
This can cause the drain valve to freeze in the winter.

(Problems to be Solved by the Invention) As mentioned above, if the balance ring is welded to the inner tank in order to save the effort of screwing, a large amount of water will remain in the water channel during dewatering, and the remaining water will After dewatering is completed (after the drain valve is closed), the water drips into the water tank and accumulates around the drain valve, causing the drain valve to freeze in the winter.

The present invention aims to solve these problems,
Therefore, the object is to provide a washing machine that can be used for both dehydration and dehydration, which can improve assembly efficiency and can prevent residual water from dripping from the water channel as much as possible after dehydration is completed.

[Structure of the Invention (Means for Solving the Problems)] The dehydrating and dehydrating washing machine of the present invention includes a rotatable inner tank for washing and dehydrating in the water receiving tank, and on the inner wall of the inner tank, Along with forming vertical grooves to configure water channels extending vertically,
A balance ring is attached to the upper part of the side wall of the inner tank by welding, and the bottom of the balance ring is continuous with the upper part of the vertical groove, and there is a small hole for draining water on the inner surface of the vertical groove. It is characterized in that a gap is formed between the upper end of the vertical groove and the balance ring.

(Function) Since the balance ring is welded to the inner tank, there is no need for screwing during assembly. Moreover, since a gap is formed between the balance ring and the small hole for draining water or the upper end of the vertical groove on the back surface of the vertical groove in the water channel, the vertical groove in the water channel is The water that rises through the pores or gaps is sequentially discharged from the pores or gaps.

(Example) Hereinafter, a first example of the present invention will be described based on FIGS. 1 to 4. First, in FIG. 2 showing the overall configuration, reference numeral 1 denotes an outer box of a washing machine for dehydration and washing, in which a water receiving tank 3 is arranged via an elastic suspension mechanism 2. An inner tank 5 made of plastic is rotatably disposed via a shaft 4.

In this case, the connection structure between the inner tank 5 and the dehydration shaft 4 is
A bottom plate 6 made of a metal plate is embedded in the bottom of the machine by insert molding, and both upper and lower sides of the central part of the bottom plate 6 are exposed, and the exposed part and the dewatering shaft 4 are tightened and fixed with bolts 7. A container-shaped agitator 9 is disposed at the inner bottom of the inner tank 5 via a washing shaft 8, while a water receiving tank 3
A motor 10 and a rotation transmission mechanism 11 are disposed on the outer bottom of the holder, and the rotation force of the motor 10 is transmitted to the inner tank 5 (dehydration shaft 4) and the agitator 9 (washing shaft 8) via the rotation transmission mechanism 11. It is configured to transmit selectively. Further, in order to form a pump chamber 12 on the lower surface side of the agitator 9, a circular recess 12a is formed in the inner bottom of the inner tank 5, and a pump blade 13 protruding from the lower surface of the agitator 9 is inserted into the pump chamber 12. It is stored inside. As shown in FIGS. 1 and 3, the bottom of the pump chamber 12 (circular recess 12a) has a drain hole 14 and a suction port 15.
is formed. In FIG. 3, reference numeral 16 indicates a plurality of small holes formed in the bottom plate 6, and plastic flows into each small hole 16 during insert molding of the bottom plate 6. On the other hand, in FIG. 2, 17 is a drain port formed at the bottom of the water receiving tank 3, 18 is a drain valve for opening and closing the drain port 17, and 19 is a drain valve attached to the upper side wall of the inner tank 5 by welding as described later. A plastic balance ring with a gutter-shaped annular body 1
The two-sided opening of 9a is closed with a lid 19b, and water 20, for example, is sealed inside. In this case, Figures 1 and 4
As shown in the figure, a welded part 21 is formed on the outer periphery of the bottom surface of the balance ring 19, and the welded part 21 is in contact with the upper end surface of the side wall of the inner tank 5, and the welded part 21 is pressed against the upper end surface of the side wall of the inner tank 5 while reciprocating from side to side. By rotating it, frictional heat is generated and the entire circumference of the bottom of the balance ring 19 is welded to the entire circumference of the upper end surface of the side wall of the inner tank 5. On the other hand, 22 is a water channel provided on the inner wall of the inner tank 5 so as to extend vertically.
A vertical groove 24 extending from the water supply port 23 of the pump chamber 12 (see FIGS. 1 and 3) to the upper end of the inner tank 5 is formed on the inner wall of the pump chamber 12, and the side opening of the vertical groove 24 is covered with a cover 2.
5, and the upper part of the vertical groove part 24 is connected to a discharge port 26 formed in a concave shape at the bottom of the balance ring 19. A support frame 28 for a lint filter 27 is detachably attached to the discharge port 26. 29 is a water drain port for discharging water that rises along the vertical groove 24 in the water channel 22 to the water receiving tank 3 during dewatering.
In this embodiment, the upper end of the vertical groove part 24 is cut out, thereby forming a horizontally long slit-shaped gap at the joint between the upper end of the vertical groove part 24 and the balance ring 19. It is structured as follows. In this case, drain port 2
The width of the groove 9 and the width of the vertical groove 24 are set to be approximately the same. In addition, the vertical groove part 2 of the peripheral side wall of the inner VJ5
There are many dehydration holes 3 in the part other than 4 as shown in Figure 1.
0 is formed.

Next, the operation of the above configuration will be explained. During the washing operation, while the laundry is washed by the rotation of the agitator 9,
After the water in the water receiving tank 3 is sucked into the pump chamber 12 from the suction port 15 by the pumping action of the pump blade 13, it is sent upward through the water channel 22 from the water supply port 23, and is then passed through the lint filter 2.
7 and returned into the inner tank 5. As a result, lint in the water is captured by the lint filter 27, and at the same time, the washing water is circulated up and down. In this case, waterway 2
A water drain port 29 is formed in the vertical groove portion 24 in 2,
The opening area of this water drain port 29 is small, and the amount of water leaking from the water drain port 29 during washing operation is small compared to the total water flow in the water channel 22, and the lint capture performance is approximately the same as that of the conventional one. Can be secured.

On the other hand, during spin-drying, the drain valve 18 is opened and the water in the water receiving tank 3 and the inner tank 5 is drained to the outside from the drain port 17, and the inner tank 5 rotates at high speed to drain the laundry in the inner tank 5. The water in the laundry is shaken off by centrifugal force, and the laundry is dehydrated. The water generated by this dehydration is mainly discharged into the water receiving tank 3 from the dehydration hole 30 by centrifugal force, and finally reaches the drain port 17.
water is drained to the outside. During this dewatering operation, the water channel 22
Since the inner tank 5 also rotates at high speed, the water channel 2
Water remaining in the pump chamber 12 or when dewatering starts
Water flowing into the water channel 22 from the side due to the centrifugal force rises along the vertical groove portion 24 within the water channel 22 due to the centrifugal force. However, in this embodiment, since the drain port 29 in the form of a horizontally long slit is formed at the upper end of the vertical groove 24, when the water rises to the upper end of the vertical groove 24, the water flows out from the drain port 29 under centrifugal force. The water is discharged into the water receiving tank 3 and finally discharged to the outside from the drain port 17.

In this way, the water in the water channel 22 is discharged during the dewatering operation, so that water remaining in the water channel 22 is prevented as much as possible at the end of the dewatering operation, and the remaining water is discharged from the water channel 22 into the water receiving tank 3 after the dehydration is completed. dripping is prevented as much as possible. Therefore, even if the drain valve 18 is closed at the same time as the dewatering is completed, the water channel 2
It is possible to prevent a large amount of residual water from accumulating around the drain valve 18, and to prevent problems such as freezing of the drain valve 18 due to the residual water.

In addition, in the above embodiment, the balance ring 19 is attached to the inner tank 5 by welding, so the effort of screwing the balance ring 19 and the inner tank 5 during assembly is saved, and the assembly efficiency is improved accordingly. You can improve.

Furthermore, if the balance ring 19 and the inner tank 5 are welded around the entire circumference as in this embodiment, the bonding strength between the balance ring 19 and the inner tank 5 can be increased compared to conventional screw-fastened ones. Therefore, the effect of reinforcing the inner tank 5 by the balance ring 19 can be increased accordingly. As a result, for example, even if the wall thickness of the side wall of the inner tank 5 is made slightly thinner than before, it is possible to secure almost the same strength as before due to the reinforcing effect of the balance ring 19. Material costs can also be reduced. However, to achieve the intended purpose of the present invention, welding around the entire circumference is not necessarily necessary, and intermittent welding may be used.

In the first embodiment, the drain port 29 is formed at one end of the vertical groove portion 24, but for example, in the second embodiment of the present invention shown in FIG.
As in the embodiment, the drain port 31 consisting of a small hole may be formed in the shape of a horizontally long slit at a predetermined distance downward from the upper end of the vertical groove portion 24. effect can be obtained.

In addition, the present invention can be modified in various ways without departing from the scope of the invention, such as changing the stirring body 9 from a container-shaped one to a pulsator-shaped one.

[Effects of the Invention] As is clear from the above description, in the present invention, since the balance ring is welded to the inner tank, the effort of screwing during assembly can be omitted, and assembly efficiency can be improved. Moreover, since a gap is formed between the small hole or the upper end of the vertical groove and the balance ring on the back surface of the vertical groove in the waterway, the rotational centrifugal force causes the water to rise along the vertical groove in the waterway. The water can be discharged from the small hole or gap, and it is possible to prevent residual water from dripping into the water tank from the water channel after dewatering is completed, and thereby prevent the drain valve from freezing due to residual water in winter. It has the excellent effect of preventing

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention, and FIG. 1 is a vertical sectional view of the inner tank cut along the waterway;
FIG. 2 is a longitudinal sectional side view of the entire tank, FIG. 3 is a cross-sectional view of the bottom of the inner tank, FIG. It is a figure equivalent figure. In the drawing, 3 is a water receiving tank, 5 is an inner tank, 9 is an agitator, 19 is a balance ring, 22 is a water channel, 24 is a vertical groove, 27 is a lint filter, and 29 and 31 are water drain ports. Figure 1 Figure 2

Claims (1)

[Claims] 1. An inner tank for both washing and dewatering is rotatably provided in the water receiving tank, and a vertical groove is formed on the inner wall of the inner tank to form a water channel extending vertically, and an upper part of the side wall of the inner tank is formed. A balance ring is attached to the groove by welding, and the bottom of the balance ring is continuous with the upper part of the vertical groove,
A dehydrating/washing machine characterized in that a small hole for draining water is formed on the inner surface of the vertical groove or a gap is formed between the upper end of the vertical groove and a balance ring.