JPS6341599B2 - - 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 dehydration rinse operation using the above-mentioned configuration, it was found that there was a problem peculiar to dehydration and rinsing, which did not exist in the rinsing operation of conventional washing machines. After inspecting the item, it was discovered that the laundry had 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 provide a dehydrator having a dehydrating and rinsing function capable of preventing spot-like dyeing on laundry due to drying.

A first embodiment in which the present invention is applied to a two-tub washing machine will be described below with reference to FIGS. 1 to 4.
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 3 at the bottom of the dehydrating tank 3.
a to the drain hose 4, and the washing tub 2
A drain port 2a is connected to the drain hose 4 via a drain valve 5. 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 cylinder having a parallel cylindrical shape and having upper and lower ends open, and a flange portion 14a formed on the outer periphery of the lower end of this is connected to a holder 12a provided at the upper end of the shaft 12 with a bolt 15 together with the bottom wall of the dewatering basket 10. Therefore, it is installed upright at the center of rotation within the dehydration basket 10. 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. This is made of polypropylene, has a wall thickness of 30 mm, has a porosity of 35%, and has an average pore diameter of 20 to 70 microns. In particular, in the above embodiment, the distribution density of water-permeable micropores can be adjusted so that the water-permeation resistance is lowered in the lower region by adjusting the additive material for forming pores when making the water spray tube 14 from such a polymeric porous material. It is formed in a structure that becomes lower as it goes higher and higher. Reference numerals 16 and 17 denote an inner lid and an outer lid for opening and closing the laundry entrance/exit 18 on the upper surface of the dehydration receiving tank 3;
A substantially funnel-shaped water supply device 19 is attached to the lower surface, and its water inlet 19a faces the opening at the upper end of the water spray tube 14. Reference numeral 20 denotes a cloth press plate that is detachably fitted into the upper 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, in which a dehydration timer 22, a washing timer 23, and an electromagnetic water supply valve 24 are arranged, and the water inlet side of this electromagnetic water supply valve 24 is It is connected to a water supply (not shown) with a hose 25, and the water outlet side is connected to a water supply pipe 27 connected to the water supply device 19 and a water supply pipe 28 provided facing inside the washing tub 2 via a manually operated switching pot 26. The washing tub 3 is connected by switching operation of the switching knob 26.
Water can be selectively supplied to either of the water spray barrels 14 and 14.

Next, the configuration of the electric circuit will be explained based on FIG. 4. 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.
It is a switch for the lid that closes in conjunction with the closing of the
The one input terminal 29 is branched into two via this lid switch 31, and one branch end is connected to the other input terminal 30 via one timer switch 32 of the dehydration timer 22 and the dehydration motor 9. At the same time, the other branch end is connected to the other input terminal 30 via the other timer switch 33 of the dewatering timer 22 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 32
Only those items will be 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 carried out. First, open both the inner and outer lids 16 and 17 of the dehydration receiving tank 3, and place the laundry 34 that has been washed with detergent in the adjacent washing tub 2 into the dehydration basket 1.
0, close the lids 16 and 17, and switch the switching pot 26 so that water is supplied to the water spray barrel 14.
Thereafter, when the dehydration timer 22 is set to the dehydration rinse stroke, one timer switch 32 energizes the dehydration motor 9 to continuously drive the dehydration basket 10, and the other timer switch 33 activates the dehydration motor 9. The electromagnetic water supply valve 24 is continuously energized. Therefore, water is supplied through the electromagnetic water supply valve 24 and the switching cock 26.
and is supplied to the water supply device 19 via the water supply pipe 27,
The water is continuously injected into the water spray cylinder 14 from the water inlet 19a, and the water is filled with water. 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 the water in the surrounding wall is washed through the countless water-permeable micropores in the peripheral wall. It is ejected forcefully towards object 34. This water then passes through the laundry 34 by centrifugal dehydration, and finally reaches the dehydration basket 1.
The water is discharged into the dehydration tank 3 from the dehydration hole 11 of 0.

In such dehydration rinsing, the water in the water spray barrel 14 passes through the numerous water-permeable micropores scattered in the wall and is released into the laundry 34 as described above, so the released water becomes mist. The result is a well-dispersed product that closely resembles a shape. Therefore, it is possible to effectively prevent staining of the laundry 34 due to a small amount of powder foreign matter such as iron oxide powder, which is seen in the conventional method in which the jetted water is concentrated at one point on the laundry. , the same effect of preventing staining as in the rinsing action in the washing tub can be obtained. In addition to this, the following effects can also be obtained. That is, in a conventional water-impermeable water spray tube in which, for example, 20 water fountain holes with a diameter of 0.16 cm are formed, the total water outlet area S1 is 0.40 cm ² , whereas in the water spray tube of the above embodiment, the total water outlet area S1 is 0.40 cm 2 . In the case of No. 14, the surface area is assumed to be 687.2 cm ² (this assumes the same size as the conventional water spray tube mentioned above), and the porosity of the surface is
If it is assumed to be 50%, the total water outlet area S2 is 343.6
^cm2 , and the amount of water discharged per unit time is 859 times that of the conventional method, as can be understood by calculating it by S2/S1. In this way, the flow rate of water discharge can be greatly increased compared to the conventional system, and the discharged water is sufficiently dispersed to form a substantially mist-like form, so that the rinsing efficiency is greatly improved and uneven rinsing is less likely to occur. By the way, the prevention of staining cannot be solved by installing a filter in the waterway to remove fine particles of foreign matter. However, if fine particles are removed by filtration from the water that is normally used even for drinking water, water flow resistance will increase dramatically, and unless the filter is made of a large structure with a fairly wide area, the amount of water will decrease drastically. . Therefore, a solution using filtration means cannot be adopted at all from the viewpoint of rinsing efficiency. In this point,
In the present invention, since the countless water-permeable micropores are not intended to have a filtration action, a sufficient amount of water discharged from the water spray tube 14 can be ensured.

In particular, in the above embodiment, the distribution density of the water-permeable micropores is formed so that the water-permeation resistance is high in the downward direction and decreases in the upward direction, so that the water head is high and water tends to be released downward. Since the water flow resistance increases as the water spray tube 14 rotates,
Since water can be discharged almost uniformly from the entire area of the peripheral wall extending above and below, uneven rinsing can be more effectively prevented.

In the second embodiment shown in FIG. 5, the thickness of the peripheral wall of the water spray tube 35 made of the same material as in the first embodiment is set to the maximum thickness at the lower region 35a, and the thickness is set to the maximum at the lower region 35a, and the thickness is set to the maximum at the lower region 35a. The middle region 35b is set to be slightly thinner, and the remaining upper region 35c is set to the minimum thickness, and the water flow resistance is set depending on the thickness of the peripheral wall. Similarly to the above, water can be discharged uniformly between the upper and lower parts.

The third embodiment shown in FIG. 6 is provided with a cover member 37 having a plurality of covering parts 37a formed on the outer circumferential surface of a water spray tube 36 made of the same material as the first embodiment, and partially covering this. By setting the width of each cover portion 37a so that it becomes narrower as it goes upward, the covered area of the water spray tube 36 is configured to become smaller as it goes upward from the bottom. . In this configuration, the water spray tube 3 with a high water head also
6, the total water flow resistance increases as it goes lower, so the same effect as described above can be obtained.

In addition, the present invention is not limited to the above-mentioned embodiments, and the water spray barrel may be detachably attached to the dewatering basket.

As described above, the present invention has the water sprinkler tube made of a porous material with countless water-permeable micropores scattered in the wall, so that water is directed from the sprinkler tube toward the surrounding laundry, creating a state that closely resembles mist. It can effectively prevent spot-like staining on laundry caused by minute amounts of foreign particles such as iron oxide powder in the water, and also prevent uneven rinsing. It is possible to provide a dehydrator with a dehydration and rinsing function that is less likely to cause dehydration and has excellent effects such as improving rinsing efficiency.

[Brief explanation of drawings]

1 to 4 relate to the first embodiment of the present invention, in which FIG. 1 is a vertical cross-sectional front view of a two-tub washing machine, FIG. 2 is an enlarged vertical cross-sectional view of main parts, and FIG. FIG. 4 is a wiring diagram of an electric circuit, and FIGS. 5 and 6 are a longitudinal cross-sectional view and a front view of the water canister showing second and third embodiments, respectively. . In the figure, 10 is a dehydration basket (dehydration tank), 14, 35 and 36 are water spray tubes, and 37 is a cover member.

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 pipe is placed in the wall. A dehydrator characterized by being made of a porous material with countless water-permeable micropores scattered therein.