JPH06304388A - Purification device and washing machine using the same - Google Patents

Abstract

(57) [Summary] [Purpose] To extend the life of the purification filter. [Structure] The solution that has flowed into the gap between the purification filter 30 and the cylindrical case 31 from the first conduit 24 flows out from the core material 33 through the wire mesh filters 35a, 35b, 35c and the thread winding filter 34 that gradually become finer in mesh. . The suspended substances in the solution adhere to the wire netting filters 35a, 35b, 35c in order from the largest suspended substance. Spool filter 34
In, small suspended matter is trapped. Purification filter 3
In order to wash 0, washing water is introduced from the second conduit 25 in the direction opposite to the purification direction. Wire mesh filters 35a, 35
Suspended substances that are thinly attached to b and 35c are washed away.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purifying device for trapping suspended substances and dusts in a solution and a washing machine using the purifying device.

[0002]

2. Description of the Related Art As a conventional purification filter for trapping suspended matter and dust in a solution, a strong stainless steel cylindrical core material having a large number of small holes (for example, a diameter of 30 m) is used.
m, height 250 mm) around the appropriate length of yarn such as cotton or polypropylene (for example, 0.5μm ~ 150μ
m) and a thickness (for example, about 20 mm) are wound, and a wound filter that removes suspended substances, dusts, and the like in the solution at the wound portion is well known.

FIG. 5 shows a purifying device incorporating this type of wound filter. In FIG. 5, 1 is a case, 2 is a case 1
A threaded filter that is screwed onto the upper part of the threaded wire, 3 is a thread winding filter installed in the case 1, 4 is a core material, 5 is a thread winding portion, and 6 is a thread through the side wall of the case 1 and the thread winding filter 3 penetrating the lid body 2. An inflow path for inflowing a solution between the part 5 and 7, a lid 2
Is an outflow passage that penetrates through the core material 4 and flows out the solution in the core material 4.

In this purification apparatus, when the solution that has entered from the inflow passage 6 passes through the bobbin winding portion 5, suspended substances, dust, and the like are captured, and the purified solution flows from the inside of the core material 4 to the outflow passage 7. Be led to.

Such a purifying device is arranged in a circulation path for circulating the wash water drained from the water tub of the washing machine back into the water tub for circulation, and is used to purify and reuse the wash water. .

Further, the cartridge filter disclosed in Japanese Patent Laid-Open No. 9799/1993 is a thin metal band on the outer peripheral portion of a filter which is formed by folding a thick cardboard having air permeability in the longitudinal direction to form a continuous mountain shape. Is wound, and an adsorbent made of activated carbon or the like is housed inside the filter. This cartridge filter purifies the solvent by adsorbing sludge containing detergent in the solvent used in dry cleaning to the adsorbent.

Further, the water absorbent body disclosed in Japanese Utility Model Publication No. 2-43442 is for removing water and dirt in a solvent by dry cleaning, and a plurality of water absorbent cylinders are made of several layers of water absorbent fiber. A spirally wound filter paper cylinder is arranged on the outermost circumference of the wound rolls.

In addition, the moisture removing element disclosed in Japanese Utility Model Publication No. 2-39523 is to remove moisture, dust, and thread wastes in the solvent in the dry cleaning, and is installed inside the outermost dust removing filter. A plurality of concentric reinforcing cylinders are provided, and a hygroscopic material is wound around the reinforcing cylinders.

[0009]

In the conventional wound filter, the suspended matter in the solution and dust larger than the suspended matter are collectively captured in the wound portion 5, so that clogging easily occurs. Moreover, even if tap water or the like is poured from the inside of the core material 4 in the opposite direction to the inflow direction of the solution and the suspended matter or dust trapped in the spool 5 is discharged to be washed, suspended matter or dust etc. The amount of withdrawal is small. Therefore,
When it was reused, the solution cleaning ability was easily lost due to clogging of the thread winding portion 5, and the life was short.

Therefore, in order to extend the life of the wound filter, a strainer is provided in the inflow passage 6 and the like upstream of the wound filter in the purifying device so that suspended substances and dusts in the solution can be trapped in advance and the wound filter can be used. The amount of trapped substances such as suspended matter and dust was reduced. However, since the strainer has a small area for capturing suspended substances, dust, and the like, it is likely to cause clogging and the flow rate of the solution may be drastically reduced. Moreover, a space for arranging the strainer is required, which is expensive.

Further, in all of those disclosed in JP-A-3-9799, JP-B-2-43442 and JP-B-2-39523, the outer peripheral portion is made of paper and has a short service life. Later, it cannot be reused repeatedly to replace it with a new one, which goes against the trend of resource saving.

[0012] In view of the above, the present invention provides a purification filter which can be surely washed after use and has a long life. In addition, a washing machine using this purification filter with good purification efficiency of washing water is provided.

[0013]

According to a first aspect of the present invention, the wire mesh filters 35a, 35 are provided on the solution infiltration side of the thread winding filter 34 for capturing suspended matter in the solution.
b, 35c, and the wire mesh filters 35a, 35b,
The mesh size of 35c is the same as or larger than the mesh size of the spool filter 34.

According to a second aspect of the present invention, the mesh size of a plurality of wire mesh filters 35a, 35b, and 35c that are laminated is made smaller as the mesh size of the wire mesh filter 34 gets closer.

According to a third aspect of the present invention, the wire mesh filters 35a, 35b and 35c are made of stainless steel.

According to a fourth aspect of the present invention, a purifying device 23 is installed in a circulation path 22 for returning the wash water drained from the water tank 11 to the water tank 11 and circulating it.

According to a fifth aspect of the present invention, the cleaning solution is made to flow into the thread winding filter 34 from the side opposite to the solution infiltration side of the thread winding filter 34.

[0018]

In the means for solving the problems according to the above-mentioned claims 1, 2 and 3, the solution that has penetrated from the wire mesh filter 35a having a large mesh outside passes through the wire mesh filters 35b and 35c having a gradually reduced mesh and passes through the thread winding filter 34. Outflow.

At this time, the wire mesh filters 35a, 35
Suspended substances, dusts, and the like in the solution adhere to the surfaces of b and 35c in order of increasing size, and small suspended substances and solutes are captured by the bobbin filter 34.

In the means for solving the problem according to the fourth aspect, the wash water drained from the water tank 11 is guided to the circulation path 22 and is again discharged to the water tank 11 through the purifying device 23. At this time, suspended matter, dust, and the like in the wash water are captured on the surfaces of the wire mesh filters 35a, 35b, 35c, and the small suspended matter and solute are captured by the bobbin filter 34.

In the means for solving the problem according to the fifth aspect, in order to clean the purifying device 23 to which suspended substances, dust and the like are attached after the washing is completed, the circulating path 22 is washed from the direction opposite to the inflow direction of the washing water. Inflow water. This cleaning water penetrates through the bobbin filter 34 and passes through the wire mesh filters 35a, 35b, 35c where the mesh gradually increases. At this time, suspended substances, dust, and the like that are thinly attached to the wire netting filters 35a, 35b, and 35c are easily washed away by the washing water.

[0022]

【Example】

<First Embodiment> A fully automatic washing machine according to the first embodiment of the present invention is
As shown in FIG. 2, the washing machine main body 10 is internally provided with a water tub 11, and the water tub 11 is rotatably provided with a washing and dehydrating tub 12. A pulsator 13 is rotatably arranged at the bottom of the washing / dehydrating tub 12.

A drive motor 15 for rotating the washing / dehydrating tank 12 and the pulsator 13 is fixed to the bottom of the water tank 11. The driving force of the drive motor 15 is the pulley 1
6, the V-belt 17, the reduction mechanism 18 and the like.

A drain pipe 19 for draining the washing water in the water tub 11 out of the washing machine body 10 is attached to the bottom of the water tub 11. An electromagnetic valve 20 is interposed in the drain pipe 19. A drain hose 21 is connected to the end of the drain pipe 19.

Further, in the washing machine main body 10, a water tank 11 is provided.
A circulation path 22 is provided for returning the wash water drained from the tank to the water tank 11 again for circulation, and the circulation path 22 is provided with a purifying device 23 for purifying the wash water.

The circulation path 22 is connected to an upstream side of the electromagnetic valve 20 of the drain pipe 19 and guides the washing water to the purifying device 23. The washing water purified by the purifying device 23 is provided above the water tank 11. And a second conduit 25 for discharging from. The first conduit 24 is provided with a suction pump 26 for sucking the wash water from the drain pipe 19 into the first conduit 24.

As shown in FIG. 1, the purifying device 23 has a cylindrical purifying filter 30, a bottomed cylindrical case 31 for accommodating the purifying filter 30, and a lid 32 for sealing the upper opening of the cylindrical case 31. It has and.

As shown in FIGS. 1 and 3, the purification filter 30 has a thread winding filter 34 for trapping suspended substances and solutes such as small surfactants and turbid components in the washing water, and three thread winding filters 34 on the outer periphery of the thread winding filter 34. It consists of wire mesh filters 35a, 35b, 35c that are thinly laminated in stages to capture large suspended solids in the wash water and dust such as lint.

Further, the purification filter 30 is housed in the center of the cylindrical case 31 with a gap between it and the outer wall, and the upper and lower surfaces thereof are positioned and fixed by being pressed by the cylindrical case 31 and the lid 32. .

The spool filter 34 has a thickness of 0.5.
mm-0.1 mm stainless steel reinforcing core material 33 (for example, diameter 30 mm, height 250 m)
The yarn is made of cotton, polypropylene or the like and is wound around the outer peripheral portion of m) at an appropriate interval and a thickness of 15 mm to 20 mm.
A plurality of small holes having a hole diameter of 5 mm are bored in the core material 33, and the hole diameter of the wound filter 34 is 1 μm to 5 μm.
It is supposed to be m.

The wire mesh filters 35a, 35b, 35
“C” is a braided stainless steel wire having a diameter of 0.1 mm to 0.4 mm, which is arranged at intervals of 2 mm. The mesh size of the wire mesh filters 35a, 35b, 35c is larger than the mesh size of the spool filter 34. Moreover, the wire mesh filters 35a, 35b,
The size of each mesh of 35c is the same as the spool filter 34.
It is said to be small as it approaches. This makes it possible to capture suspended matter, dust, and the like that enter the washing water from the wire mesh filter 35a on the outermost peripheral surface in descending order.

The cylindrical case 31 is detachably screwed to the lid 32. The first conduit 24 and the second conduit 25 pass through the lid 32 and are held therein. The opening of the first conduit 24 is the purification filter 30.
And the cylindrical case 31 communicate with each other, and the opening of the second conduit 25 communicates with the inside of the core material 33.

As a result, in the purifying device 23, the washing water flowing from the first conduit 24 into the cylindrical case 31 enters from the outer peripheral surface of the purifying filter 30 and flows out from the inner peripheral surface to reach the second conduit 25. A flow path is formed.

A water supply valve 36 is provided in the second conduit 25.
Is intervening. The water supply valve 36 has a water supply function of supplying tap water from the water supply port 25a of the second conduit 25 into the aquarium 11, and a wash water passage function of stopping the water supply and passing the wash water circulating through the circulation path 22. As a cleaning water for the purification filter 30, tap water flows through the second conduit 25 into the purification device 23 from the direction opposite to the washing water purification flow path to wash the purification filter 30.

On the side wall of the washing machine body 10, an opening 37 for taking out and replacing the cleaning filter 30 from the cleaning device 23 is formed, and an opening / closing lid 38 for opening and closing the opening 37 is attached.

In the above structure, when the laundry and the detergent are put into the washing / dehydrating tub 12 to start washing, the solenoid valve 2
0 is closed and water is supplied to the water tank 11 by the water supply valve 36,
A washing process is performed. When the washing process is finished and the rinsing process is started, the suction pump 26 is operated and the washing water in the water tank 11 is pressure-fed to the first conduit 24 via the drain pipe 19.

This washing water is guided from the first conduit 24 to the purifying device 23 and flows into the gap between the purifying filter 30 and the cylindrical case 31. The inflowing washing water gradually becomes finer from the coarse mesh screen 35a that is the outermost peripheral surface of the purification filter 30.
After passing through, it penetrates into the spool filter 34 and flows out from a large number of small holes of the core material 33.

At this time, the wire mesh filters 35a, 35
Suspended substances, dust, and the like in the wash water are deposited on the surfaces of b and 35c in order from the largest, and the small suspended substances and solutes are captured by the spool filter 34. The wash water that has been purified by removing suspended substances and the like is guided from the inside of the core material 33 to the second conduit 25, and is returned to the water tank 11 again through the water supply port 25a.

The purification cycle of this washing water is repeated,
When the rinsing step is completed, the suction pump 26 is stopped to open the electromagnetic valve 20, and the wash water in the water tank 11 and the circulation path 22 is drained from the drain pipe 19 to the outside of the machine through the drain hose 21.

In order to wash the purification filter 30 to which suspended substances, dust and the like have adhered after washing, tap water is supplied to the purification device 23 through the second conduit 25 by the water supply valve 36.

This tap water infiltrates through the small holes of the core material 33 in the direction opposite to the washing water purification flow path and flows out from the coarse mesh screen 35a. At this time, wire mesh filter 3
Suspended substances, dust, and the like that are thinly attached to 5a, 35b, and 35c are washed away by tap water. Tap water containing suspended matter, dust, etc. is guided to the drain pipe 19 from the first conduit 24,
Water is drained to the outside of the machine through the opened solenoid valve 20 and drain hose 21.

Here, when only the cotton thread-wound filter 34 having a hole diameter of 1 μm is used, and when the thread-wound filter 34 has a mesh hole diameter of 1000 μm and 318 μm, respectively.
m, 69 μm and 0.1 mm thick stainless steel wire mesh filters 35a, 35b, 35c arranged at 2 mm intervals are used, and the first washing water supplied at the start of washing is cleaned and then washed. The wire mesh filters 35a, 3
When 5b and 35c were arranged, suspended substances, dusts, and the like were more easily removed, and clogging of the thread-wound filter 34 was less likely to occur, so that the life could be extended by about 1.5 times.

When the spool filter 34 reaches the end of its service life in a long term, it is necessary to replace the purification filter 30 with a new one. In this case, the opening / closing lid 38 is opened, and the cylindrical case 31 is removed by rotating it with respect to the lid body 32, the purification filter 30 in the cylindrical case 31 is replaced, and the cylindrical case 31 is rotated in the opposite direction to the lid to remove the lid. It is screwed onto the body 32 and the opening / closing lid 38 is closed.

As described above, in the purifying filter 30, since the wire mesh filters 35a, 35b and 35c having different mesh sizes are laminated on the outer periphery of the spool filter 34, it is possible to prevent a large suspended substance or dust in the wash water. It can be captured in a wide range in multiple stages in order, and clogging of the spool filter 34 is unlikely to occur.

Moreover, tap water flows into the purifying filter 30 in the direction opposite to the purifying flow path, so that the wire mesh filter 35a,
Suspended substances, dust and the like that are thinly adhered to 35b and 35c can be easily removed, and the purification filter 30 after cleaning
It can be reused and its life can be extended. Also,
When cleaning the purification filter 30, the purification filter 3
There is no need to remove 0, and cleaning work can be performed easily.

Further, compared to the conventional case where a strainer having a small area for catching suspended matter and dust is arranged on the upstream side of the purification filter to trap suspended matter and dust in washing water in multiple stages. Therefore, clogging is less likely to occur, and the larger the flow rate of the washing water, the faster the purification rate of the washing water. Moreover,
The space and cost for disposing the strainer are not required, and the space can be saved and the cost can be reduced.

<Second Embodiment> As shown in FIG. 4, the purification filter 40 of the fully automatic washing machine of the second embodiment has a reinforcing core member 4 as shown in FIG.
1. A thread-wound filter 42 that captures solutes and small suspended matter in the wash water in which a thread is wound around the inner circumference of 1, and a large suspended material in the wash water that is thinly laminated in three stages on the inner circumference of the thread-wound filter 42. It is composed of wire mesh filters 43a, 43b, 43c for capturing dust such as thread waste.

The wire mesh filters 43a, 43b, 43
c is set to be smaller as the size of each mesh approaches the spool filter 42. This makes it possible to capture suspended substances, dust, and the like that enter the washing water from the wire mesh filter 43a on the innermost peripheral surface in descending order.

A first conduit 46 and a second conduit 47 are held through the lid 45 of the purifying device 44. The opening of the first conduit 46 communicates with the innermost wire mesh filter 43a, and the opening of the second conduit 47 communicates with the gap between the purification filter 40 and the cylindrical case 48. The other configurations and operations are similar to those of the first embodiment, and similar effects can be obtained.

The present invention is not limited to the above embodiments, and it goes without saying that many modifications and changes can be made to the above embodiments within the scope of the present invention.

For example, the purifying devices 23 and 44 of the first and second embodiments are not limited to those used for purifying washing water, but can be used for various purposes by changing the size and capacity of the mesh. . For example, the water drained from the bathtub may be provided in a circulation path for returning the water again to reuse the water. Also, it is installed in the sewer pipe to treat sewage,
It may be used to prevent environmental pollution.

Furthermore, the purifying devices 23 and 44 of the first and second embodiments may be applied to a two-tub type washing machine. Further, the wire mesh filters of the first and second embodiments are not limited to stainless steel, and may be made of silver or copper, and may be made of only one sheet without being laminated in three stages.

[0053]

As is apparent from the above description, according to claims 1 and 2 of the present invention, suspended matter in a solution, dust, etc. can be captured in a wide range in a large order, so that the thread-wound filter is unlikely to be clogged. Further, since the wire mesh filter is arranged on the solution infiltration side of the thread winding filter, the durability is excellent as compared with the conventional filter using only the thread winding portion or the one made of paper.

Further, by injecting the washing water from the direction opposite to the solution infiltration side, it is possible to easily remove suspended substances, dusts, etc. that are thinly attached to the wire mesh filter. For this reason, it becomes possible to reuse after cleaning, and the life can be extended.

According to the third aspect, since the wire mesh filter is made of stainless steel, it has excellent corrosion resistance.

According to the present invention, suspended substances and dusts in the washing water can be captured in a wide range in order of decreasing size. Therefore, a conventional purification filter and a strainer are separately provided to suspend suspended substances and dusts in the washing water. Clogs are less likely to be clogged and the cleaning speed is higher as the flow rate of washing water is larger than that in the case of capturing the same in multiple stages. Moreover, space and cost for disposing strainers and the like are not required, and space saving and cost reduction are possible.

According to the fifth aspect, when cleaning the purifying device, there is an excellent effect that the cleaning operation can be easily performed without removing the purifying device.

[Brief description of drawings]

FIG. 1 is a partial vertical sectional view of a cleaning device for a washing machine showing a first embodiment of the present invention.

[Fig. 2] Configuration diagram of a washing machine

FIG. 3 is a cross-sectional view of the purification device.

FIG. 4 is a partial vertical cross-sectional view of a washing machine purifying device according to a second embodiment.

FIG. 5 is a partial vertical cross-sectional view of a conventional purification device.

[Explanation of symbols]

 11 Water tank 22 Circulation path 23,44 Purification device 34,42 Wound filter 35a, 35b, 35c 43a, 43b, 43c Wire mesh filter

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location B01D 29/62 35/027 39/14 DC C 7305-4D B01D 35/02 P

Claims (5)

[Claims] 1. A wire-wound filter for trapping suspended matter in a solution, and a wire mesh filter arranged on the solution infiltration side of the thread-wound filter, wherein the mesh size of the wire-mesh filter is equal to that of the wire-wound filter. Purification device characterized in that the size is equal to or larger than the size of the. 2. The purifying apparatus according to claim 1, wherein a plurality of wire mesh filters are laminated, and the mesh size of each wire mesh filter is gradually reduced toward the bobbin wound filter. 3. The purifying device according to claim 1, wherein the wire mesh filter is made of stainless steel. 4. A washing machine, wherein the purifying device according to any one of claims 1 to 3 is installed in a circulation path for returning the wash water drained from the water tank back to the water tank for circulation. 5. The washing machine according to claim 4, further comprising a filter washing means for causing washing water to flow into the thread winding filter from a side opposite to a solution infiltration side of the thread winding filter.