JPS6047880B2 - Lint collection device for agitating washing machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a lint collection device for an agitator-type washing machine, which utilizes the rocking motion of an agitator to generate a strong circulating water flow inside the agitator to remove lint from clothes during washing. is efficiently collected inside the agitator.

Conventional lint capture methods for agitator-type washing machines include those in which a circulation pump is installed at the bottom of the washing and dewatering tank for the purpose of forming a circulating water flow, and in which a filter is installed in the hollow interior of the agitator to prevent the agitation of the agitator. A so-called agitator circulation method is known in which a circulating water flow is generated inside an agitator using dynamic motion. In the former case, a complicated pump mechanism is required, which increases costs, and if used for a long time, lint accumulates inside the pump and the pump no longer performs its intended function. It had the following drawbacks. In the latter case, although the drawbacks seen in the pump method are eliminated, the circulating water flow generated within the agitator is smaller than that of the pump method, and therefore, it is difficult to increase this water flow, that is, the filter The major issue is how to increase the amount of water passing through.

The present invention relates to an improvement of the above-mentioned agitator circulation system, and provides a structure that can sufficiently increase the generated circulating water flow.One embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In Figures 1 to 4, 1 is the outer frame, 2 is the outer tank, and 3 is the outer frame.
is a washing/dehydration tank (hereinafter simply referred to as the inner tank), and this inner tank 3
is fixed to one end of the dehydration shaft 4. Reference numeral 5 denotes a substantially conical agitator equipped with a plurality of clothes agitating blades 6 for agitating the clothes, and this agitator 5 is attached to one end of the washing shaft 7 by an appropriate method.

The washing shaft 7 and the dewatering shaft 4 are arranged coaxially. On the other hand, the upper part of the agitator 5 is formed into a hollow cylindrical cylindrical part 5a, and a lint filter 8 is removably installed inside the lint filter 8.
A plurality of circulating water suction holes 9 are provided in the peripheral wall portion located above the upper end surface. Further, a plurality of discharge passages 10 each having a substantially triangular cross-sectional shape are formed in the lower surface portion of the agitator 5, with the clothes stirring blades 6 serving as one wall.
The upper end of this discharge passage 10 is connected to a cylindrical portion 5a in which a lint filter 8 is installed. Further, the lower end of the discharge passage 10, that is, the outlet 10a, opens at the lower side surface of the agitator 5, and the outlet 10a faces the outlet 10a in the radial direction of the agitator 5.
The relationship φD>φd holds between the dimension between 0a: φd and the outer peripheral tip dimension of the clothes stirring blade 6: φD.

Reference numeral 11 denotes a bearing box incorporating a bearing portion for pivotally supporting the washing shaft 7 and the dewatering shaft 4, and a washing/dewatering switching clutch for switching between washing and dewatering.

Reference numeral 12 denotes a motor (hereinafter simply referred to as the motor) having a gap in the axial direction, which has a stator 14 on both sides of a rotor 13, and the rotor shaft 15 fixed to the rotor 13 is equipped with the washing/dehydration switching clutch. The rotor 13 is connected to the washing shaft 7 and the dehydrating shaft 4 through the washing machine, and the movement of the rotor 13 is transmitted to the washing shaft 7 or the dehydrating shaft 4 according to a washing cycle stored in a timer (not shown) of the washing machine. .

16 is a fixture for fixedly supporting the motor 12; 1;
Reference numeral 7 designates a vibration isolation mechanism 18 for suspending and supporting the outer tank 2 as a mounting member for the lint filter 8.

In the above configuration, the operation will be described next. The motor 12
The motor 12 is configured to rotate forward and reverse for a short period of time during washing using a CR timer and bidirectional three-terminal control (time control using an appropriate method using a rectifying element, etc.).
The forward and reverse rotation of is transmitted to the washing shaft 7 via the rotor shaft 15 and the washing/dehydration switching clutch, and therefore the agitator 5
performs forward and reverse rotation, that is, oscillating motion, in a short period of time. In addition to the method of applying a swinging motion to the agitator 5 to perform washing, in addition to the method of using the forward and reverse motion of the motor 12 as in this embodiment, for example, a method of mechanical switching using gears and a link mechanism is also available. It goes without saying that such a mechanism can also be generally used, and such a mechanism may be employed when implementing the present invention. As mentioned above, when the agitator 5 swings, the washing water located near the outlet in the discharge passage 10 is pushed out into the inner tank 3 due to the rotating centrifugal force, and therefore The water level in the cylindrical portion 5a is lowered somewhat than the water level in the inner tank 3.

Therefore, due to the water level difference, the washing water in the inner tub 3 falls into the cylindrical portion 5a of the agitator 5 through the circulating water suction hole 9, and
This cycle is repeated sequentially according to the rocking motion of the agitator, and the overall flow of washing water is from the inner tank 3 → the circulating water suction hole 9 → the inside of the cylindrical part 5a of the agitator 7 and 5 → the discharge passage 10, and then the inside again. Return to tank 3. In other words, the washing water generates a circulating flow. A lint filter 8 is provided in the middle of the circulation flow of the washing water, and the lint j contained in the washing water is captured by this filter 8, and the washing water coming out from the white water 10a of the discharge passage 10 is Becomes purified.

When capturing such lint, the important point is to push out as much washing water as possible from the discharge passage 10 when the agitator 5 swings.
The water level b in the cylindrical portion 5a of the agitator 5 is greatly lowered, and the difference in head from the water level a in the inner tub 3 becomes large, so that the amount of washing water flowing through the circulating water suction hole 9 increases.

That is, as the amount of circulating water increases, the amount of lint captured by the filter 8 increases. According to the above configuration, as shown in FIGS. 2 and 3, the relationship φD>φd is established between the outer peripheral tip size of the clothes stirring blade 6: φD and the tip outlet size of the discharge passage: φd. It is something that
This makes it possible to improve the lint capture performance.

To explain this in detail, when the agitator 5 rotates in the direction of arrow A in FIG.
It is pushed outward by the centrifugal force of rotation. Furthermore, as described above, since φD>φd, the discharge passages 1', 1'
There is a dimensional difference between the outlet 10a and the outer peripheral tip of the blade 6, and as a result, when rotating in the direction of the arrow A, a negative pressure state is generated near the section a.

Therefore, the washing water in the discharge passage 1' is pushed out and simultaneously pulled to the negative pressure side, and more washing water flows out into the inner tub 3. In addition, at this time, the discharge passage 1'
Since the water inside is temporarily pressurized near part b, it seems that the amount of water being pushed out decreases, but
As shown in Figure 5, it can be seen that the total amount of circulating water is increasing.

Furthermore, when the agitator 5 rotates in the direction of arrow B, the discharge passages 1' and 1' cause the opposite phenomenon to that described above, and as a result, the amount of circulating water increases significantly due to the relationship φD>φd. .

Therefore, the lint capture rate by the lint filter 8 becomes extremely high. As described above, according to the present invention, the dimension φD of the outer peripheral side end face of the clothes stirring blade provided in the agitator and the mutual dimension φ of the outlet at the lower end of the plurality of discharge passages provided in the agitator
By establishing the relationship φD>φd between It is intended to reduce the Further, due to the above-mentioned dimensional relationship, the discharge passage is not blocked by clothing, and the amount of circulating water is not affected.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of an agitator-type washing machine according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of its agitator, Fig. 3 is a top view of the agitator with the lint filter removed, and Fig. 4. is a perspective view of the lint filter, No. 5
The figure is a diagram showing the flow rate of circulating water in the lint collection device. 3...Washing and dehydration tank, 4...Dehydration shaft,
5...Agitator, 5a...Cylinder part, 6...
... Clothing agitation blade, 7 ... Washing shaft, 8
... Lint filter, 10 ... Discharge passage, 10a ... Outlet.

Claims (1)

[Scope of Claims] 1. A substantially conical agitator having a plurality of clothes agitation blades on its circumferential surface and a lint filter disposed within a hollow cylindrical portion at the top, one end of which communicates with the cylindrical portion. The agitator is provided with a plurality of discharge passages whose end outlets are opened on the side surface of the lower part of the agitator, and a washing shaft connected to the agitator and a dehydration shaft fixed to the washing/dehydration tub are arranged coaxially, and the agitator is connected to the agitator during washing. The agitation type washing machine provides an oscillating motion, wherein φD of the outer peripheral tip of the clothes stirring blade and φd of the distance between opposing outlets of the discharge passage are set such that φD>φd. A lint collection device for agitating washing machines featuring the following. 2. The lint collecting device for an agitating washing machine as set forth in claim 1, wherein adjacent discharge passages are formed by using clothes agitating blades as one wall surface.