JPS5873395A - Dehydrating washer - 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 The present invention relates to a de-icing and washing machine in which a pulsator is eccentrically arranged at the inner bottom of a rotating tub.

In this type of washing machine, in which the pulsator is eccentric for the purpose of improving the cleaning effect, the center of gravity of the rotating tub is biased toward the side where the pulsator is disposed because the pulsator is eccentric. Therefore, in such a configuration, when the rotating tub is rotated at high speed for centrifugal dehydration of laundry, there is a problem in that abnormal vibrations are likely to occur due to the eccentric center of gravity of the rotating tub.

Therefore, an object of the present invention is to arrange the pulsator eccentrically by providing a liquid chamber in the rotating tank on the opposite side of the pulsator and filling the liquid chamber with a liquid for adjusting the parameter. To provide a dehydrating/washing machine capable of canceling out the deviation of the center of gravity of a rotating tub O caused by this, and thereby preventing the occurrence of abnormal vibrations during rotation of the rotating tub.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. Reference numeral 1 denotes an outer box of a washing machine that also serves as a dehydrator. Inside this box, a water tank 5 is elastically suspended via a hanging holder 2 that is an elastic support mechanism. A rotary tank 5 which is used both as a washing tank and a dehydration tank and has a large number of dehydration holes 4 in its peripheral wall is provided. Reference numeral 6 denotes a housing fixed to the outer bottom of the water receiving tank 5. This housing K rotatably inserts and supports a hollow dewatering shaft 7, and a washing shaft 8 is rotatably inserted into and supported by the dehydrating shaft 7. A driven pulley 9af of a belt transmission mechanism 9 is attached to the washing shaft 8, and the driven pulley 9a and the dewatering shaft 7 are connected to each other by a well-known clutch mechanism 10.
The mounting plate 11 on the outer bottom of the water tank 5
The rotation of a motor 12 fixed to the dehydrating shaft 7 and the washing shaft 8 is selectively transmitted. On the other hand, the rotating tank 5
A recess 13 for accommodating a pulsator is formed eccentrically by a predetermined amount at the bottom, and a bottom plate 14 is fixed with tapping screws 15 so as to close the open lower surface of the recess 13 . Then, a cylinder 16 is fixed to the upper end of the dewatering shaft 7 protruding into the water receiving tank 3, and a portion of the bottom plate 14 corresponding to the center of the rotary tank 5 is fixed to the #cylindrical body 16, so that the rotary tank 5 is connected to the dewatering shaft 7. It is directly connected to.

A gear case 17 is fixed approximately at the center of the recess 13, and this gear case watertightly covers the driving gear 1B attached to the upper end of the washing shaft 8 and the internal gear 19 meshing with the driving gear 18. A pulsator 20 is eccentrically arranged at the inner bottom of the rotary tank 5, and is attached to a pivot shaft 19aK of an internal gear 19 projecting upward from approximately the center i of the gear case 17. Reference numeral 21 denotes a liquid chamber formed at the inner bottom of the rotating tank 5 on the side opposite to the eccentric side of the pulsator 20, that is, on the opposite side of the pulsator 20. 22 is liquid-tightly closed by the bottom plate 14 via a gasket 23, and a liquid for balance adjustment such as water or saline is sealed inside. As a method for filling the balance adjustment liquid, for example, during assembly, when the rotating tank 5 is alone, the rotating tank 5 is placed upside down and the liquid is poured into the cylindrical lip 22, and then the gasket 23 is inserted. The bottom plate 14 is fixed therebetween with tapping screws 15. In addition, in this liquid chamber 21, a radial reinforcing lip 24 connected to the inner circumferential wall of the cylindrical lip 22 and an annular reinforcing lip 25 concentrically with the cylindrical lip 22 are provided together with a rotating tank 5.
It is formed by integral molding with. In addition, 26 is the rotating tank 5
This is a balance ring that is fixed to the inner peripheral edge of the upper opening of the balance ring and has a predetermined amount of liquid added inside.

Next, when the laundry is put into the six-rotation tub 5 together with detergent and the timer 27 is set, the water supply valve (not shown) opens and water is supplied into the rotation tub 5 until the predetermined water level is reached. Then, a water level switch (not shown) is activated, and based on this, the water supply valve is closed and the motor 12 is activated. As a result, the washing shaft 8 rotates, and the pulsator 20 is rotationally driven via the drive gear 1B and the internal gear 19 to perform detergent washing. When washing this detergent, please use the rotating tank 5.
As the pulsator rotates 200 times, a rotating hot water flow is generated in the inner bottom of the pulsator, which rotates in a centrifugal direction, and an ascending water flow that stays on the peripheral wall and rises is generated. However, in this embodiment, since the pulsator 20 is eccentrically arranged at the inner bottom, the hot water flow hits the peripheral wall of the rotating tank 5 with a stronger force on the side where the pulsator 20 is placed than on the side opposite to the device, and the force of the rising water flow on the side where the pulsator 20 is placed is becomes stronger than that on the anti-device side. As a result, the strong rising water flow on the side where the pulsator 20 is arranged rises and then descends with its momentum to the side opposite the device (in addition, since the pulsator 20 rotates at an eccentric position of the rotating tank 5, the hot water flow is complicated). Coupled with the fact that water is generated, the overall water flow becomes complicated.

Because of this, the laundry in the washing water not only rotates but also actively rotates up and down, and is thoroughly washed without uneven washing. When this washing with detergent is completed, the process moves to the draining stage, and the drain valve 28 is opened, and the water in the water receiving tank 3 and the rotating tank 5 is drained from the drain hose 29.
is discharged from the aircraft via the After this draining process, when the dewatering process begins, the clutch mechanism 10 switches and the dewatering shaft 7
rotates, thereby rotating the rotary tub 5 at high speed, and centrifugally dewatering the laundry inside.

By the way, in this embodiment, since the pulsator 20 is eccentrically arranged at the inner bottom of the rotating tank 5, the pulsator 20 and the internal gear 19
Due to the weight of the pulsator 2 and the gear case 17, a load is biased towards the side where the pulsator 20 is placed.
Since a liquid chamber 21 is provided on the opposite side of the pulsator 20 and a liquid for balance adjustment is filled in it, it is possible to offset the above-mentioned load deviation caused by eccentrically arranging the pulsator 20. The center of gravity of the tank 5 can be aligned approximately with the center thereof, and abnormal vibrations of the rotating tank 5 during centrifugal dewatering can be prevented. Furthermore, even if the laundry in the rotating tub 5 is somewhat unevenly distributed during centrifugal dehydration, the liquid in the balance ring 26 is distributed biased to the opposite side of the uneven load, so that the uneven load on the rotating tub 5 is offset. Needless to say, when the liquid chamber 21 is not provided, the center of gravity is originally biased toward the side where the pulsator 20 is located, and the laundry is biased toward the pulsator 20 side, causing the laundry to fall into the rotating tub. 5's center of gravity is greatly biased toward the placement side, resulting in / clamp ring 26
Therefore, it is possible to reliably prevent the occurrence of abnormal vibrations in the rotating tank 5 due to the inability to offset this uneven load. Therefore, a lance ring 26 of the same size as the conventional one is sufficiently effective, and there is no need to make it larger.After this dewatering process is completed, water is stored in the rotating tank 5 again. The rinsing process that drives the pulsator 20, the draining process, and the dehydration process are repeated several times to complete the entire process, but the washing water does not enter the liquid chamber 21 during the detergent washing process and the rinsing process. That volume is no longer needed, resulting in significant water savings.

In particular, if the cylindrical lip 22 formed on the outer bottom of the rotary tank 5 is closed by the bottom plate 14 of the rotary tank 5 as in this embodiment, the liquid chamber 21 can be opened using the originally existing bottom plate 14. It is convenient and easy to configure.

Furthermore, if the reinforcing lips 24 and 25 are integrally formed on the cylindrical lip 22 of the liquid chamber 21, the cylindrical lip 22 will not be deformed even if a large centrifugal force is applied to the liquid chamber 21 during centrifugal dehydration. This can prevent the internal liquid from leaking out.

FIG. 3 shows another embodiment of the present invention, and only the differences from the previous embodiment will be described.
1, a liquid injection port 30 is formed in the upper surface drawing area of the liquid injection port 50.
In this structure, a stopper 32 is screwably attached and detached from the inside of the rotating tank 5 via a packing 51. With this configuration, the filling operation of liquid into the liquid chamber 21 can be performed before fixing the rotary tank 5 to the dehydration shaft 7 as in the previous embodiment, or after the assembly is completed.

In the above embodiment, the rotation of the washing shaft 8 is controlled by the pulsator 20 through a gear mechanism consisting of a drive gear 18 and an internal gear 19.
However, the present invention is not limited to this, and the power may be transmitted to the pulsator via a belt transmission structure or a friction wheel transmission mechanism. Further, the present invention is not limited to a dehydrating/washing machine having a structure in which dehydrating holes 4 are formed in the peripheral wall of the rotating tub 5 and washing water is also stored in the water receiving tank 3 as in the above embodiment; It goes without saying that it can be applied to a dewatering/washing machine that is formed into a tapered shape so that water is stored only in the rotary tank, and the water is pumped up and drained by driving the rotary tank to rotate.

As described above, the present invention has a pulsator arranged eccentrically at the inner bottom of a single-rotation tank.
The feature is that a liquid chamber for sealing liquid is located on the opposite side of the pulsator, and as a result, the eccentricity of the center of gravity of the rotating tank due to the eccentric arrangement of the pulsator can be compensated for and the rotation can be adjusted. It is possible to provide a dehydrating and washing machine that can prevent a rotating tub from causing abnormal vibrations at times.

[Brief explanation of the drawing]

Fig. 1 is an overall vertical cross-sectional view showing one embodiment of the present invention;
The figure is an enlarged longitudinal cross-sectional view of the same essential part, and FIG. 5 is a partial enlarged longitudinal cross-sectional view showing another embodiment of the present invention. In the figure, 5 is a rotating tank, 7 is a dehydration shaft, 8 is a washing shaft, 20 is a pulsator, 21 is a liquid chamber, 22 is a cylindrical lip, 24 and 25
32 is a reinforcing lip and a stopper.

Claims (1)

[Claims] 1. In a rotary tank in which a pulsator is eccentrically arranged at the inner bottom of the rotary tank, the pulsator is arranged eccentrically at the inner bottom of the rotary tank. 41 dehydration/flow system characterized by having a liquid chamber for sealing liquid located on the opposite side of the device. L. The liquid chamber is formed by integrally molding and projecting a cylindrical rib on the outer bottom of the rotating tank, liquid-tightly (closed) by the bottom plate of the rotating tank, as set forth in claim 1. 8. The dehydrating and washing machine according to claim 2, characterized in that a reinforcing rib connected to the cylindrical rib is formed in the liquid chamber by integral molding with the rotary tub. 4. The dehydrating and washing machine according to any one of claims 1 to 3, wherein the liquid chamber is provided with a stopper that can be attached and detached from the bottom of the rotation chamber.