JPS622837B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a dehydrating washing machine that forcibly circulates water through a lint filter to collect and remove lint and the like from the water.

(b) Prior art This type of dehydrating washing machine is, for example,
As proposed in Japanese Patent No. 159173, a lint filter is placed in a recess on a balance ring, and circulating water is discharged from above. Therefore, when taking out the lint filter and removing collected lint, etc., the operator had to operate from above, and the outer tank cover was a hindrance.

(c) Problems to be Solved by the Invention The present invention aims to improve the ease of attaching and detaching the lint filter with a simple structure, and to prevent the lint filter from falling off during installation.

(d) Means for Solving the Problems The present invention forms a pump chamber on the back side of the rotor blade, forms a recess on the inner wall of the balance ring, and arranges a discharge water passage for the pump in this recess. At the same time, the lint filter that receives the discharged water is removably attached from inside the tank, and the problem is solved by providing a pedestal in the recess that supports the frame of the lint filter from below. be.

(E) Function In other words, since the lint filter is installed and removed from inside the tank, it is not obstructed by the outer tank cover, etc., and the lint filter is prevented from falling off due to external force applied during installation. The pedestal prevents this, and furthermore, this pedestal serves as a guide when installing and removing the lint filter.

(f) Example To explain based on the drawings, 1 is an outer tank of a fully automatic washing machine suspended from the machine frame, a synthetic resin washing/drying tank 2 is installed inside, and a bearing case 3 and a motor 4 are installed. It is attached externally. As shown in Fig. 2, the dehydration tank 2 has a substantially hexagonal column shape consisting of an arcuate wall and a flat wall, and has a plurality of raised portions on the bottom and the corners extending from the bottom to the circumferential side to improve the cleaning effect. 5
..., and an opening 6 is formed at the center of the bottom. A rotary blade 7 is disposed within the opening 6 with a slight gap, and is attached to the rotor shaft 8, and has a plurality of back blades 9 formed on its back surface. 10... are a large number of dehydration holes 11 formed on the peripheral side wall of the dehydration tank 2.
... are reinforcing ribs formed vertically and horizontally on the outer surface of the peripheral side wall of the dehydration tank 2, 12 are reinforcing radial ribs formed on the outer bottom surface of the dehydration tank 2, and 13... are also formed on the outer bottom surface. The reinforcing concentric rib 14 is a boss formed on the third concentric rib 13 from the inside.

Reference numeral 15 denotes a dehydration tank board fixed to the dehydration tank drive shaft 16 by bolts 17 and nuts 18, which abuts the innermost rib 19 of the concentric ribs 13 and the boss 14, and screws 20 are tightened to the boss 14. It is connected to the dehydration tank 2 by. The substrate 15 and the ribs 19 constitute a pump chamber 21 by the back blade 9, and water between the outer tank 1 and the dehydration tank 2 is sucked through the plurality of through holes 22 of the substrate 15.

Here, the rib 19 is not completely annular;
As shown in FIG. 2, it has an open part 23 that opens toward the corner where the raised part 5 is located, and the arcuate wall leading to this open part 23 is shaped like a "C" and has a straight part 24,
24 is provided, and furthermore, an expanded portion 25 that expands outward from the straight portions 24, 24 is provided. The open portion 23 serves as an outlet for water discharged from the pump chamber 21.
Further, the expanded portion 25 is located on the outer bottom surface of the dehydration tank 2, and the corner portion 26 is open on the outer side.
It is connected to This corner portion 26 has an open surface closed by a water channel cover 27, and constitutes a discharge passage 28 which communicates with the pump chamber 21 through the expanded portion 25. Further, this corner portion 26 is used as a passage for die cutting when the expanded portion 25 is integrally molded with the raised portion 5 by the side core.

The water channel cover 27 has a shape as shown in FIG. 3, and its upper end flange portion 29 comes into contact with the lowermost horizontal rib 30 of the vertical and horizontal reinforcing ribs 11.
Therefore, as shown in Figure 2, screws 31 and 31 are installed at both ends.
be stopped.

In this way, the discharge passage 28 is formed into a strong square tube shape without missing the circular shape of the opening 6, and the raised portion 5 increases the waterway area.

Reference numeral 32 denotes a vertical groove formed in the circumferential wall of the dewatering tank 2 corresponding to the corner portion 26, and its lower end opening communicates with the upper end of the corner portion 26 of the discharge passage 28. Reference numeral 33 denotes a discharge pipe that is fitted into the vertical groove 32 in a substantially tight manner, and whose cross section is made into a substantially oblong shape by blow molding, for example, and whose lower end opening is fitted into the lower end opening of the vertical groove 32, that is, the upper end of the discharge passage 23. The upper end is inserted into the retaining ring 35 of the balance ring 34 of the dehydration tank 2 on the inside of the tank. This discharge pipe 33 has a vertical groove 32
From the middle lower part fitted to the retaining ring 3 toward the inside of the tank.
A bent part 36 that is gently bent inward is formed over the upper part inserted into the tank 5, and this bent part 36 partially protrudes into the tank to create a washing plate effect and to provide resistance to the discharge pressure. is reduced.

Here, the balance ring 34 encloses a liquid 37 that acts as a balancer, and is attached to the upper end of the dehydration tank 2 with a screw 38. This balance ring 34 has upper and lower annular groove bodies 39,
40 by welding the opening edges thereof. The inner wall of the balance ring 34 has a recess 4 whose lower side is completely open and whose upper side is also basically open.
1 is formed. A communication portion 42 that bridges the opposing side walls of the recess 41 is provided in the upper part on the back side of the recess 41, that is, in the upper groove body 39, and the above-mentioned retaining ring 35 is formed by this communication portion 42. has been done.

Then, a screw 43 is attached to the top surface of the balance ring 34.
The upper end of the discharge pipe 33 is held down by the hanging piece 45 of the cover 44 attached to the cover 44 to prevent the lower end of the discharge pipe 33 from coming off the discharge path 28.

The upper concave groove body 39 has water discharged upward from the upper end of the discharge pipe 33 into the cover 44.
A guide 46, which changes its direction downward in cooperation with the communication part 42, is provided so as to bridge the opposing side walls at the upper end of the front side of the recess 41, just like the communication part 42.

The discharge waterway of the pump chamber 21 includes the discharge passage 28 and the discharge pipe 3 formed on the outer bottom surface of the dehydration tank, as described above.
3. Also, the cover 44, the communication part 42, and the guide 46
It is formed by a passage 47 constituted by, and terminates in a downward discharge port 48.

49 is a lint filter that is removably fitted to the front side of the recess 41 of the balance ring 34;
It is located directly below the discharge port 48 to receive discharged water, and causes the discharged water to fall into the tank from directly above. This lint filter 49 has a conical net 5 as shown in FIG.
0 and a synthetic resin filter frame 51 to which this net 50 is attached, both sides of the filter frame 51 are formed in the shape of a square frame, and the outer side thereof has an elastic piece 52 which is thinner in wall thickness than the frame body and has elasticity. and
This elastic piece 52 is provided with an engaging portion 53 consisting of a protrusion.

On the other hand, an engagement receiving part 55 consisting of a groove that elastically engages with the above-mentioned engagement part 53 is provided on opposite side walls 54 on the front side of the upper part of the recess 41.
1 into the recess 41 to fit the square frames on both sides of the filter frame 51 into the both side walls 54, and further engage the engaging portion 53 and the engaging receiving portion 55.
Filter 49 is installed. Furthermore, a pedestal 56 is integrally formed on both side walls 54 to hold the filter frame 51 so that it does not fall.

When the filter 49 is installed in the recess 41, the front side of the filter frame 51 protrudes from the recess as shown in Fig. 4, and the filter 49 can be easily removed by holding this part and pulling it toward you. It can be removed from the recess 41. Further, the pedestal 56 also protrudes from the recess 41 and serves as a guide when the filter frame 51 is pushed into the recess 41.

57 is a rib formed on the outer periphery of the rotor blade 7 so as to hang down by dimension (A), which increases the pressure in the pump chamber 21 during rotation and reduces the amount of water that comes out from the gap in the opening 6 into the tank. decrease. 58 is the above outer tank 1
It is an annular outer tank cover that is placed over the top of the tank.

To explain the operation, first, when the rotary blade 7 rotates during washing or rinsing, the water between the outer tank 1 and the dehydration tank 2 flows through the through hole 22 as shown by the arrow in Fig. 1 due to the pump action of the back blade 9. It is sucked into the pump chamber 21.
Most of the sucked water is quickly sent out along the straight parts 24, 24 to the open part 23, no matter which direction the rotary blade 7 rotates, and from there into the discharge passage 28, and is sent to the discharge pipe. 33 and a passage 47, and is discharged approximately vertically from a downward discharge port 48 into the dehydration tank 2 via a lint filter 49.

In this way, since little water circulates in the pump chamber 21, only a small amount of water flows out from the opening 6 into the dehydration tank 2, and most of the water flows perpendicularly to the rotating water flow in the dehydration tank 2. As they overlap, the water flow becomes complicated, which promotes the upper and lower rotation of the laundry, improving the washing rate and suppressing uneven washing.
In particular, since the discharged water does not spread and falls straight down,
It works by hitting the laundry you want to float and sinking it below the water surface, further improving the washing rate.

Lint waste and the like contained in the water are reliably collected by the lint filter 49. At this time, since the water coming out of the discharge port 48 flows down toward the tip of the net 50, the thread waste accumulates from the end of the net 50, and when cleaning the filter 49, the thread waste can be easily removed from the net 50. I can do it. Even if there is some lint that cannot be caught at the tip of the net 50, if you lower the tip of the net 50 by the dimension B below the washing water level L (at high water level) as shown in Figure 1, the washing water flow and washing will be reduced. When an object hits the net 50, the vibrations generated at this time can push the thread waste caught by the net 50 to its tip. filter 49
Cleaning can be done by removing the filter frame 51 from the recess 41 and turning the net 50 over. When installing the filter 49, since the filter frame 51 is symmetrical, it can be inserted into the recess 41 without worrying about the direction, making it easy to use. Further, the net 50 can be used even if it is turned upside down.

By the way, during dewatering, the filter frame 51 of the lint filter 49 tends to become more flat due to centrifugal force, which means that the lateral dimension of the filter frame 51 expands, and the engaging portion 53 is more securely attached to the engaging receiving portion 55. There is no need to worry about it coming off due to centrifugal force.

In addition, a through hole 5 is provided in the filter frame 51 as shown in FIG.
9, even if the net 50 becomes clogged with thread waste, the water coming out of the discharge port 48 will overflow from the through hole 59 into the dehydration tank 2, and the filter frame 5
1 does not unsightly overflow from above, thereby preventing thread waste from adhering to the fitting portion between the engagement receiving portion 55 and the engagement portion 53.

Also, during washing or rinsing, the laundry may pass through the filter 4.
9 and pull it in the circumferential direction to remove it, but the elastic pieces 52 on both sides of the filter frame 51
Since the part connected to the ring is thick, the rigidity in the circumferential direction is large. That is, although the filter 49 applies the elastic force of the elastic piece 52 in the direction of the inside and outside of the tank,
No elastic force is applied in the circumferential direction, so it does not easily come off even if it is pulled by laundry.

In addition, when cleaning the discharge waterway when it becomes clogged, etc., by removing the cover 44, the passage 47 is exposed and the discharge pipe 33 can also be taken out, making it easy to clean.

(G) Effects of the Invention According to the present invention, in addition to operating the lint filter from inside the tank, the pedestal serves as a guide, so the operability of attaching and detaching the lint filter is greatly improved, and the lint filter is operated from inside the tank. The installation condition of the filter is extremely stable. Therefore, it is possible to provide a dehydrating washing machine that is easy to use and has a stable structure.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a dehydrating washing machine according to the present invention;
Figure 2 is a sectional view taken along the line in Figure 1, Figure 3 is a perspective view of the waterway cover, Figure 4 is a sectional view taken along the line in Figure 1, and Figure 5 shows the balance ring with the cover removed. FIG. 6 is a perspective view of the lint filter, and FIG. 7 is a perspective view of another embodiment of the lint filter. 1... Outer tank, 2... Washing/dehydration tank, 7... Rotating blade, 21... Pump chamber, 34... Balance ring, 41... Recess, 48... Discharge port, 49... Lint filter, 50...net, 51...filter frame, 56...cradle.

Claims (1)

[Claims] 1 In a washing/dehydration tank with an outer tank on the outer periphery, a rotary blade on the bottom, and a balance ring on the upper edge, a pump is installed on the back side of the rotary blade to suck water between the outer tank and the dehydration tank. In addition to forming a chamber, a recess is formed in the inner wall of the balance ring, a discharge channel for water discharged from the pump chamber is disposed in the recess, and a lint filter for receiving the discharge water is disposed in the recess. A filter frame is detachably attached from inside the tank so that its opening plane faces the discharge port of the discharge waterway, and on both side walls of the recess there are supports that support both ends of the filter frame from below. A dehydrating washing machine characterized by being equipped with a stand.