JPS6389198A - Centrifugal dehydrator - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a centrifugal dehydrator, and more particularly to a dewatering tank of a centrifugal dehydrator.

[Conventional technology]

Conventionally, in a centrifugal dehydrator used in a washing machine, a dehydration tank is rotatably installed inside a dehydration water receiving tank, and a plurality of dehydration holes are bored in the wall of the dehydration tank, or a dehydration tank is rotatably installed inside a dewatering tank. The inner wall of the water tank is formed into a tapered shape whose diameter gradually increases from the bottom to the top, and a number of tanks are formed on the inner wall of the dehydration tank, extending from the bottom to the top along the tapered surface. At the same time, a dehydration hole is provided near the top of the dehydration tank, and in the latter case, water from the laundry during dehydration flows through the taper-shaped dehydration tank due to centrifugal force as the dehydration tank rotates. The water rises along the inner wall of the dehydration tank and is discharged into the outer tank through the dehydration hole provided near the top of the dehydration tank.

[Problem that the invention seeks to solve]

However, in conventional centrifugal dehydrators that are commonly used, the cloth located near the center of the dehydration tank has a lower dehydration rate than the cloth closer to the center of the tank, resulting in uneven dehydration rate of the dehydration tank as a whole. Experiments have revealed that this occurs. In particular, when performing small-volume dehydration, most of the fabric is stuck to the inner wall of the dehydration tank, resulting in an extremely low dehydration rate.For example, when drying laundry using a dryer, the Focusing on shortening the drying time, even if the dehydration rate of the washed cloth is only slightly different by about 1%, the influence of this difference cannot be ignored.

Here, the reason why the dehydration rate is low near the inner wall of the dehydration tank will be explained below.

In other words, as dehydration progresses and the water content of the cloth in contact with the inner wall of the tank decreases to a value commensurate with the applied centrifugal force, the centrifugal force applied to the water contained in the cloth and the The adhesion forces of the cloth are balanced and no more water escapes from the cloth. On the other hand, water moves easily in continuous fibers, and even a relatively small centrifugal force causes water to move toward the tank wall surface. The reason for this is due to the help of the capillary action of the fibers, and this can be understood from the fact that the dehydration rate of fabrics located closer to the center of the tank improves earlier. In addition, due to the movement of water in the fibers, the water content of the fabric in contact with the inner wall of the tank gradually increases, but for the same reason as mentioned above, the water content of the fabric in the part of the fabric in contact with the inner wall of the tank increases due to the applied centrifugal force. Once the water content is reduced to a suitable level, dehydration does not proceed.

5. The present applicant has previously constructed the dehydration tank of the centrifugal dehydrator from, for example, a resin having a large number of slits and pores, and
JP-A-60-2 proposes a dehydration tank with many dehydration holes.
According to this, a large amount of water at the initial stage of dehydration is quickly discharged from the dehydration hole, and then the water in the portion of the laundry cloth in contact with the inner wall of the dehydration tank is absorbed by the capillary action of the water-absorbing member. By moving it into the same member, it improves the dehydration rate of the fabric located near the inner wall of the tank, reduces uneven dehydration, and promotes the movement of water in the fibers, improving the dehydration rate of the dehydration tank as a whole. I was able to do it.

However, the applicant previously proposed the
In the centrifugal dehydrator described in -207700 publication,
Since it is necessary to give the inner wall of the dehydration tank made of a porous water-absorbing member a dummy effect for the laundry cloth, that is, a more efficient dehydration effect of the laundry cloth, it is necessary to increase the thickness of the water-absorbing member to a certain extent. This led to high product costs.

The present invention has been made as a result of studies to solve the problems of the prior art described above, and its purpose is to solve the problems of the prior art described above.
In order to further improve the centrifugal dehydrator described in the publication, we improved the dehydration rate of the laundry cloth located near the inner wall of the dehydration tank, reduced uneven dehydration, and promoted the movement of water within the fibers. In addition to improving the overall dewatering efficiency, the aim is to provide an improved centrifugal dewatering machine that is highly economical and can reduce the product cost by making the water absorption wall thinner. be.

[Means for solving problems]

The object is to provide a centrifugal dewatering machine having a structure in which a dehydration tank is rotatably mounted inside a dehydrated water receiving tank, and the dehydrating tank is provided with a dewatering hole communicating with the deicing water receiving tank, in which a wall surface made of a water-absorbing member is provided. This is achieved by providing a dehydration tank having a water-absorbing member and forming irregularities on the inner wall surface of the water-absorbing member.

[Effect]

Therefore, by adopting the above configuration, the present invention provides the following features:
As dehydration progresses, the moisture content in the fibers decreases.

The water that can no longer be released by the applied centrifugal force is taken into the water absorption wall by capillary action in the next step, and further dehydration progresses, but the surface of the water absorption wall is formed into an uneven shape. Moreover, at this time, a circumferential force is applied to the water taken into the water absorption wall by the centrifugal action of the dehydration tank, so that the water flows from the peaks of the water absorption wall, which has an uneven shape. The water that is rapidly promoted and migrates toward the troughs and collected in the troughs of the water absorption wall is then guided to the dewatering holes. As a result, the water content at the peaks of the water absorption wall with an uneven shape is always kept at a low value, so even when using a water absorption wall with a thinner thickness,
The function of taking in water from the washing cloth can be fully demonstrated.

〔Example〕

The present invention will be explained below based on an embodiment shown in FIGS. 1 and 2. FIG. 1 is a vertical sectional view showing the overall internal structure of a fully automatic washing machine to which the present invention is applied, and FIG. 1 is a partially enlarged cross-sectional view of the washing and dehydrating tub indicated by the reference numeral 6.

In FIG. 1 showing the overall internal structure of a fully automatic washing machine to which the present invention is applied, 1 is a button for operating the dehydrating and washing machine, 2 is a lid, and the lid 2 opens upward around a fulcrum 3. . 4
is a communication pipe, which is connected to a connection part 5 of a water supply pipe (not shown), and has a water supply part 8 into a washing/dehydration tank 6 and a dehydrated water receiving tank 7. 9 is a washing cloth input port, 10 is a dehydration tank 6 and a dehydration water receiving tank 7.
This is a cover that prevents cloth from falling between cover 1 and
0 is provided at the upper part of the dehydrated water receiving tank 7. Reference numeral 11 denotes a balance ring, which allows the dehydration tank 6 to rotate smoothly during dehydration operation. 12 is a stirring blade, which has a main blade 13 and small blades 14. Hanging rods 15a and 15b elastically suspend the dehydrated water receiving tank 7 via a spring 16.

In the illustrated embodiment, the dehydration tank 6 has two layers, an inner and outer layer, as shown in FIG. In the case of the illustrated embodiment, an inner tank (hereinafter referred to as water absorption wall) 6b made of, for example, felt or other water absorption material is lined.

Multiple grooves (troughs of uneven parts) 17 running vertically in the dehydration tank 6
A large number of dewatering holes 18 communicating with the dehydrated water receiving tank 7 are bored in the dewatering tank 7 .

In FIG. 2, 6a' is a rib that reinforces the strength of the dehydration tank 6, and in FIG. Belt 22. Driven pulley 23. Received via power section transmission device 24.

The dehydration tank 6 fixed to the hollow shaft 19 is rotated at high speed to perform dehydration. Reference numeral 25 denotes a shaft of the stirring blade 12, which, like the hollow shaft 19 described above, receives power from the motor 20 to drive the stirring blade 12 and perform washing.

26 is a stay 27a that supports the motor 20;

27b is a leg supporting the washing machine body, 28 is a cooling blade of the motor 2o, 29 is a drain pipe, 30 is a drain valve, and 31 is a back cover.

In the above configuration, when button 1 is operated, water supply pipe connecting portion 5. Communication pipe 4. Washing water is supplied into the washing tub 6 and the dehydrated water receiving tank 7 through the water supply section 8, and when detergent is added, the motor 2o rotates to rotate the stirring blades 12 in forward and reverse directions to perform washing.

Next, when the washing is finished and the process moves to the dehydration process.

A large amount of water at the initial stage of dewatering is discharged from a large number of dewatering holes 18 formed in the dehydrating tank 6, and flows out through the dehydrated water receiving tank 7 and the drain pipe 29. Also, at this time, dehydration Mj
Since the water absorbing wall 6b of No. 6 and the laundry cloth are in close contact with each other, dehydration progresses and the water content in the fibers decreases, and the water that can no longer be separated by the applied centrifugal force is removed as the next step. Water is taken into the water absorption wall 6b by capillary action, and dehydration proceeds further, but the surface of the water absorption i6b is formed in an uneven shape, and at this time, the water taken into the water absorption wall 6b is Since a circumferential force is applied by the centrifugal action of the dehydration tank 6, the water is quickly promoted and transferred from the peaks to the valleys of the water absorption wall 6b having an uneven shape. The water collected in the valley is then directed to the dewatering hole 18. As a result, the water content in the peaks of the water absorbing wall 6b having an uneven shape is always kept at a low value, so even when using a thin water absorbing wall 6b, water is not taken in from the laundry cloth. be able to fully demonstrate its functions.

FIG. 3 shows a second embodiment of the present invention, and in the second embodiment, a dehydration tank 6 provided with a water absorption wall 6b is made detachable. In addition, in Figure 3.

32 indicates an outer cylinder of the washing machine.

FIG. 4 shows a third embodiment of the invention.

In the third embodiment, the inner wall of the water absorbing wall 6b is formed into a tapered shape whose diameter gradually increases from the bottom to the top, and the inner wall of the water absorbing wall 6b is formed in a tapered shape along the tapered surface. A large number of grooves extending from the bottom to the top are formed in the water absorption wall 6b, and a dewatering hole 18 is provided at the upper side of the water absorption wall 6b. The water that has migrated from the peaks to the valleys of the wall 6b further rises along the tapered valleys of the water absorption wall 6b due to the centrifugal force that accompanies the rotation of the dehydration tank 6.
The dehydrated water is discharged into the dewatering tank 7 from a dewatering hole 18 provided near the top of the tank 6 .

FIG. 5 shows a fourth embodiment of the present invention.

In the fourth embodiment, the inner wall of the water absorption wall 6b is formed into a tapered shape whose diameter gradually increases from the top to the bottom, and the inner wall of the water absorption wall 6b is formed along the tapered surface. A large number of grooves extending from the top to the bottom are formed, and a dewatering hole 18 is provided in the lower part of the water absorption wall 6b. The water that migrated from the peaks of water absorption i6b to the valleys is
Furthermore, due to the centrifugal force that accompanies the rotation of the dehydration tank 6, the water absorption Q6b descends along the tapered trough and is discharged from the dewatering hole 18 provided at the bottom of the tank 6 into the dewatered water receiving tank 7. 6. Note that in both the third and fourth embodiments described above, a dehydration hole indicated by the reference numeral 18 may be provided in addition to the first embodiment and the second embodiment.

Furthermore, as another embodiment of the present invention, a large number of small recessed fitting portions having dehydration holes communicating with the dehydrated water receiving tank 7 may be formed on the water absorption wall 6b.

In that case, the first to fourth embodiments may also be provided with a dehydration hole indicated by the reference numeral 18.

By the way, in the illustrated embodiment, as shown in FIG. 2, the dehydration tank 6 is formed into two layers, an inner and outer layer, and a layer 6a, for example, is located on the inner periphery of an outer layer 6a made of synthetic resin or other suitable rigid body. Although the case where the water-absorbing wall 6b made of felt or other water-absorbing material is lined as an example, the entire dewatering tank 6 may be lined with a resin material having many pores or pores, for example.
It may also be molded from other materials.

In addition, in the illustrated embodiment 1, the present invention is applied to a fully automatic washing machine in which the washing tub and the dehydration tub are shared in one tub, but the washing tub and the dehydration tub are separate bodies. Of course, the present invention can be applied to the dewatering tub of a so-called two-tank washing machine.

〔Effect of the invention〕

The present invention is as described above, and as is clear from the explanation of the illustrated embodiments, according to the present invention, the dehydration rate of the laundry cloth located near the inner wall of the dehydration tank is improved, and uneven dehydration is reduced. In addition to promoting the movement of water within the fibers and improving the dehydration rate of the dehydration tank as a whole, it also has a thinner water-absorbing wall surface that reduces product costs, making it highly economical. You can get an improved centrifugal dehydrator

[Brief explanation of the drawing]

1 and 2 show an embodiment of a centrifugal dehydrator according to the present invention, FIG. 1 is a vertical sectional view showing the overall internal structure of a fully automatic washing machine to which the present invention is applied, and FIG. Number 6 in Figure 1
FIG. 3 is an overall perspective view showing another embodiment of a fully automatic washing machine to which the present invention is applied, and FIGS. It is a longitudinal cross-sectional view showing the whole internal structure of a fully automatic washing machine showing another example. 6...Washing/dehydration tank, 6a...Outer tank, 6b...Inner tank (suction 6k/''Enkei Cν and △geno 3rd group 4th group 5th figure)

Claims (1)

[Scope of Claims] 1. In a centrifugal dewatering machine having a structure in which a dewatering tank is rotatably installed inside a dewatering water receiving tank, and the dehydrating tank is provided with a dewatering hole communicating with the dehydrating water receiving tank, the water absorbing member is What is claimed is: 1. A centrifugal dewatering machine, comprising: a dewatering tank having a wall surface configured in this manner, and in which unevenness is formed on the inner wall surface of the water-absorbing member. 2. A centrifugal dewatering machine according to the invention as set forth in claim 1, which has a dehydrating tank whose inner wall surface is made of a water-absorbing material. 3. A centrifugal dehydrator according to the invention set forth in claim 1, in which the entire dehydration tank is made of a porous water-absorbing member. 4. A centrifugal dehydrator according to any one of claims 1 to 3, in which the dehydration tank is detachable. 5. In the invention according to any one of claims 1 to 4, the centrifugal device is provided with a dewatering hole communicating with a dehydrated water receiving tank in a recess provided in the inner wall surface of the water absorbing member. Dehydrator. 6. In the invention according to any one of claims 1 to 5, the inner wall of the water-absorbing member has a tapered shape whose diameter gradually increases from the bottom to the top. A centrifugal dehydrator in which a number of grooves are formed in the inner wall of the water-absorbing member and extend from bottom to top along the tapered surface thereof, and a dehydration hole is provided near the top of the water-absorbing member. . 7. In the invention according to any one of claims 1 to 5, the inner wall of the water-absorbing member is formed in a tapered shape that gradually increases in diameter from the top toward the bottom. and a centrifugal dewatering machine, wherein a plurality of grooves extending from top to bottom are formed on the inner wall of the water-absorbing member along the tapered surface thereof, and a dewatering hole is provided at a lower portion of the water-absorbing member. 8. The invention according to any one of claims 1 to 5, wherein a large number of small recessed fitting portions having dehydration holes communicating with a dehydrated water receiving tank are formed on the inner wall of the water absorbing member. Dehydrator. 9. A centrifugal dehydrator according to the invention as set forth in claim 6 or 7, in which the inner wall of the water-absorbing member is provided with a large number of small recessed fittings having dehydration holes communicating with the dehydrated water receiving tank. .