JPS626475B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dehydrator equipped with a water spray cylinder in a dehydrating tank and having a so-called dehydrating and rinsing function.

A dehydrator with a dehydrating and rinsing function, that is, by supplying clean water to the laundry housed in a dehydration basket that acts as a dehydration tank and rotating it, clean water permeates into the laundry containing detergent. Conventionally, a dehydrator that uses centrifugal force to remove water and perform rinsing uses a water sprinkling cylinder with a large number of water fountains perforated in the surrounding wall, standing upright in the approximate center of the dehydration basket. By supplying clean water to the water sprinkling tube while rotating intermittently, the water is stored in the water sprinkling tube and is sprayed out toward the laundry around the water sprinkling tube by centrifugal force. is provided. However, during a performance test of the spin-dry rinse operation using the above-mentioned configuration, it was found that there were the following problems specific to spin-dry rinse operations that did not exist in rinse operations using conventional washing tubs. When the laundry was examined, it was found that there were red spots in some places.
Even when the laundry was rinsed in the washing tub of the washing machine with water of the same quality as that used for dehydration and rinsing, no such spot-like staining occurred on the laundry. As a result of further investigation, we discovered that the material used for dyeing was iron oxide powder, and that the water containing this powder hit one point on the laundry from the fountain hole of the sprinkler tube violently and intensively, and that one point on the laundry became like a filter. It turns out that this is because the iron oxide powder is trapped there. In other words, since the water source used for rinsing is generally potable tap water, the content of iron oxide powder is very small and does not cause staining at all in normal rinsing, but it cannot be ignored in dehydration rinsing. It had become a thing.

Therefore, the purpose of the present invention is to create a structure that can sufficiently disperse and release water from a water spray barrel toward the surrounding laundry until it becomes a state that closely resembles a mist, thereby eliminating minute amounts of powder foreign matter contained in water, such as iron oxide powder. To prevent spot-like dyeing on the laundry due to washing, and also to prevent fabric from becoming fluffy due to the rubbing action between the water spray tube and the laundry, which is formed to achieve this. It is an object of the present invention to provide a dehydrator having a dehydrating and rinsing function capable of preventing such problems.

An embodiment in which the present invention is applied to a two-tub washing machine will be described below with reference to FIGS. 1 to 7. 1
is an outer box, inside which a washing tub 2 and a dewatering tank 3 are arranged on the left and right, and a water outlet 3a at the bottom of the dehydrating tank 3.
is connected to the drain hose 4, and the drain port 2a of the washing tub 2 is connected to the drain hose 4 via the drain valve 5.
It communicates with Reference numeral 6 denotes a pulsator provided at the inner bottom of the washing tub 2, which is rotationally driven by a washing motor 7 provided at the inner bottom of the outer box 1 via a belt transmission mechanism 8. 9 is a dewatering motor elastically supported on the inner bottom of the outer box 1; 10 is a dewatering basket as a dehydrating tank disposed in the dehydrating receiving tank 3 and having a large number of dehydrating holes 11 formed in the peripheral wall; A shaft 12 directly connected to the outer bottom as described later is passed through a bellows 13 at the bottom of the dewatering tank 3, and its lower end is connected to the rotating shaft 9a of the dewatering motor 9. Reference numeral 14 denotes a water spray tube having a parallel cylindrical shape and having upper and lower ends open.
2 is connected to the bottom wall of the dehydration basket 10 by bolts 15 to the support 12a provided at the upper end of the dehydration basket 1.
It is erected at the center of rotation within 0. The water spray tube 14 is made of a porous material with countless water-permeable micropores of about 40 micrometers scattered in the wall. The water spray barrel 14 used in this embodiment is made of a porous polymer material manufactured by Spacey Chemical Co., Ltd. and called Spacey. The material is polypropylene,
The wall thickness is 30 mm, the porosity is 35%, and the average pore diameter is 20 to 70 μ. Since this polymeric porous body is essentially a sintered synthetic resin, when it is taken out from the mold, as shown in an enlarged view in FIG.
c is sharp. In this embodiment, in order to blunt the sharpness, a ring-shaped burner 16 is attached to the water spray tube 14 after being removed from the mold, as shown in FIG.
The high-temperature gas indicated by A is injected, and at this time either the water spray tube 14 or the burner 16 is moved up and down to slightly melt the surface of the water spray tube 14 and then cooled. The state after this processing is shown in FIG. As a result of this melting process, the sharpness of the micropore edges 14d on the surface side is blunted.

Now, 17a and 17b are an inner lid and an outer lid for opening and closing the laundry entrance/exit 18 on the top surface of the dehydration receiving tank 3. A substantially funnel-shaped water supply device 19 is attached to the bottom surface of the inner lid 17a, and the water inlet 19a is connected to a water sprinkling tube. It faces the upper end opening of 14. Reference numeral 20 denotes a cloth press plate that is detachably fitted into the upper end opening of the dewatering basket 10. On the other hand, 21 is an operation box attached to the rear of the upper part of the outer box 1, and this is equipped with a dehydration timer 22, a washing timer 23, and an electromagnetic water supply valve 24.
The water inlet side of 4 is connected to a water supply (not shown) with a hose 25, and the water outlet side is provided facing the water supply pipe 27 connected to the water supply device 19 and the inside of the washing tub 2 via a manually operated switching cock 26. Water supply pipe 28
By switching the switching knob 26, water can be selectively supplied to either the washing tub 3 or the water sprinkling tube 14.

Next, the configuration of the electric circuit will be explained based on FIG. 7. Reference numerals 29 and 30 are a pair of input terminals connected to a power source (not shown), and 31 is the outer cover 17 of the dewatering tank 3.
This is a lid switch that closes in conjunction with the closing of the lid switch 3.
1, and one branch end is connected to the other input terminal 30 of the dehydration timer 22 via one timer switch 32 and the dehydration motor 9, and the other branch end is connected to the dehydration timer 22. 2
It is connected to the other input terminal 30 via the other timer switch 33 of No. 2 and the electromagnetic water supply valve 24. Here, the timer switches 32 and 33 of the dehydration timer 22 are controlled to open and close by a cam that rotates using a power source such as a mainspring spring (not shown), and when the dehydration timer 22 is set to the dehydration rinse stroke, When both of the timer switches 32 and 33 are simultaneously closed during the set period and set to the dehydration process, one of the timer switches 3
Only 2 are closed during the set period.

Next, the operation of the above embodiment will be explained with reference to the case where dehydration and rinsing, which is directly related to the present invention, is performed. First, open both the inner and outer lids 17a, 17b of the dehydration receiving tank 3, store the laundry 34 that has been washed with detergent in the adjacent washing tub 2 into the dehydration basket 10, close each lid 17a, 17b, and switch the switch 26. is switched so that water is supplied to the water spray tube 14. After that, when the dehydration timer 22 is set to the dehydration rinse process, one of the timer switches 3
2, the dewatering motor 9 is energized and the dewatering basket 1 is
0 is continuously driven, and the electromagnetic water supply valve 24 is continuously energized by the other timer switch 33. Therefore, water is supplied to the water supply device 19 via the electromagnetic water supply valve 24, the switching pot 26, and the water supply pipe 27, and is continuously injected into the water spray tube 14 from the inlet 19a, filling it with water. let In this state, the water spray barrel 14 is rotating at high speed together with the dewatering basket 10, so the water in the water spray barrel 14 is subjected to centrifugal force in addition to its water head, and flows through the numerous water-permeable micropores 14b in the peripheral wall to the surrounding water. laundry 34
It is ejected vigorously towards. Then, this water passes through the laundry 34 by centrifugal dehydration, and is finally discharged into the dehydration receiving tank 3 from the dehydration hole 11 of the dehydration basket 10.

In such dehydration rinsing, the water in the water spray barrel 14 passes through the water-permeable micropores 14b scattered throughout the wall and is released into the laundry 34 as described above. The result is a well-dispersed product that closely resembles a mist. Therefore, unlike the conventional method in which the jetted water is concentrated at one point on the laundry, the laundry is contaminated with minute amounts of powder foreign matter such as iron oxide powder.
This product can effectively prevent staining on the washing tub 2, and the same effect as the rinsing action in the washing tub 2 can be obtained, and since the discharged water is sufficiently dispersed, rinsing is possible. It can also prevent unevenness.

By the way, when the laundry 34 is put in and taken out of the dehydration basket 10, it is often rubbed against the surface of the water sprinkling tube 14, and in this case, if the surface of the water sprinkling tube 14 is not subjected to the melting treatment as described above, the fourth
As shown in the figure, the fibers 34a have sharp micropore edges 14c.
It gets caught on the cloth and makes it fluffy. However, in the present invention, the surface of the water spray cylinder 14 is melted by heating, for example, so that the fine pore edges 14 are formed as shown in FIG.
Since the sharpness of d is dulled, the water spray canister 14
It is possible to reliably prevent the adverse effects of causing the cloth to become fluffy due to the fabric being made of a so-called porous synthetic resin.

As a modification of the surface melting treatment by heating, as shown in FIG. 8, the surface is heated by rotating the water spray tube 14 as shown by the arrow 36 using multistage flames B from a rod-shaped burner 35. may be taken.

As described above, the present invention makes it possible to prevent spot-like staining on laundry due to minute amounts of foreign powder particles such as iron oxide powder contained in water during dehydration rinsing, and to realize this. To provide a dehydrator capable of preventing cloth from fuzzing due to rubbing action between a water spray tube formed in a cylindrical shape and laundry.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view of a two-tub washing machine showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of main parts, and Fig. 3
The figure is a further enlarged perspective view of the water spray barrel, Figure 4 is an enlarged vertical cross-sectional view of the vicinity of the water spray barrel surface before melting treatment, Figure 5 is a view equivalent to Figure 4 after melting treatment, and Figure 6 is the melting process. FIG. 7 is a perspective view showing the processing method, FIG. 7 is a wiring diagram of an electric circuit, and FIG. 8 is a diagram corresponding to FIG. 6 showing a modified example. In the figure, 10 is a dehydration basket (dehydration tank), 14 is a water spray tube, and 14d is a micropore edge.

Claims (1)

[Claims] 1. In the case of rinsing by disposing a water sprinkling cylinder in a dehydration tank and discharging water from the peripheral wall of the water sprinkling cylinder onto the surrounding laundry and performing centrifugal dewatering by rotation of the dehydration tank, the water sprinkling cylinder is placed in the wall. The water spray tube is made of a porous synthetic resin with countless water-permeable micropores scattered about, and the surface of the water spray tube is melt-treated by heating or the like to dull the sharpness of the edges of the micropores on the surface side. Dehydrator.