JPH08257324A - Filter for bathtub using charged nonwoven fabric - Google Patents

Abstract

PURPOSE: To provide a filter miniaturizing an apparatus, sufficiently purifying bathtub water and keeping excellent antibacterial and sterilizing properties. CONSTITUTION: A filter for a bathtub is composed of a filter material constituted of a combination unit of a charged nonwoven fabric and a silver-containing material. A nonwoven fabric 2, a charged nonwoven fabric 3, silver nonwoven fabric 4,..., units of (charged nonwoven fabric 3, silver nonwoven fabric 4),... the charged nonwoven fabric 3 and the silver nonwoven fabric 4 are stacked successively from the inlet port side of hot water flowing in from the bathtub to be housed in a cartridge. The charged nonwoven fabric 3 is pref. an electret nonwoven fabric.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bathtub filter, and more specifically to remove dust, dirt, etc. in hot water by including a charged non-woven fabric and a material containing silver as a combination of filter materials. The present invention relates to a bathtub filter which is obtainable and has excellent antibacterial and sterilizing properties.

[0002]

2. Description of the Related Art In recent years, when taking a look at the bathing situation at home, the bathing time has become wide due to changes in the living environment. Therefore, a warming means is provided so that the user can take a bath at any time, and the bathing efficiency is improved. The bath water has been purified for repeated use and has been used repeatedly. Various types of such baths have been known in the past. For example, in Japanese Patent Application Laid-Open No. 4-35708, bath water in a bathtub is pumped through a suction pipe by a circulation pump and filtered by a filter. At the same time, there is described a bath water circulation purification device which is heated by a heater and returned to the inside of the bath through a discharge pipe. The filter for filtering the bath water in this bath water circulation purification device is a sheet filter using a filter paper as the filter member, a porous filter using a porous resin, a porous ceramic, or the like, and further, barley stone, sun stone, etc. The natural stone, so-called mineral stone, is used as a filter material in combination with a granular filter packed in a container. Further, JP-A-3-12290 describes that in the above-described bath water circulation purifying apparatus, sterilization treatment is performed to keep bath water cleanliness and to make bathing comfortable and prevent generation of bad odor. Ozone sterilization is shown as the sterilization treatment. In addition, a method of sterilizing by disposing an ultraviolet lamp in a bathtub or a circulation channel of the bathtub is also known.

[0003]

However, the bath water circulation purification apparatus using various filter materials as described above is
Not only is the filtration part independent of the sterilization part, but the size of the device itself is also large, so the proportion of the part in the bathtub or bathroom has become a serious problem. Also, due to the widespread use of unit baths in recent years, the device itself is too large to be installed in such a small bathroom.

Therefore, as a result of various studies on the above-mentioned problems, the inventors of the present invention have to provide a filtration part and a sterilization part in one tank in order to downsize the bath water circulation purification device. While further studying this point, by using a charged non-woven fabric as the filtration site, using a material containing silver as the sterilization site, and using these as one tank, the device can be downsized and the bath filter The present invention has been made on the basis of this finding that it is possible to obtain a material that sufficiently satisfies the conditions. Therefore, the problem to be solved by the present invention is to provide a bathtub filter which is capable of not only downsizing of the device but also sufficient purification of bathwater and maintaining excellent antibacterial property or bactericidal property. It is in.

[0005]

The above objects of the present invention can be achieved by the following inventions. (1) A bathtub filter characterized in that the filter material is composed of a combination unit of a charged non-woven fabric and a material containing silver. (2) The bath filter according to item 1, wherein the filter material contains a nonwoven fabric. (3) A filter for a bathtub, wherein the combination of filter materials is at least one non-woven fabric and at least one combination unit of the filter materials described in the above item 1. (4) The bathtub filter according to any one of items 1 to 3, wherein the charged non-woven fabric is an electret non-woven fabric. (5) The bathtub filter according to any one of items 1 to 4, wherein the filter structure is a cylindrical type. (6) The bathtub filter according to any one of items 1 to 4, wherein the filter structure is a bellows type.

The present invention will be described in more detail below. In the bathtub filter of the present invention, the filter material is characterized by using a unit of a combination of a charged non-woven fabric (hereinafter referred to as a charged non-woven fabric) and a material containing silver. Things
This makes it possible not only to purify the bath water, that is, to remove large dust and hair, but also to have excellent antibacterial and bactericidal properties for a long period of time, and to easily replace the filter member. It has an excellent effect that it can be done. In the bathtub filter of the present invention,
By using the charged non-woven fabric, not only large dust but also fine dust and protein are adsorbed and removed. In addition, the material containing silver can suppress the growth of microorganisms due to the bactericidal effect of silver. Therefore, by using a unit of a combination of charged non-woven fabric and a material containing silver as a filter material combination in a cylindrical or bellows type filter structure, no odor or slime is generated in the bathtub and a fresh bathtub is always prepared. Water can be supplied. The charged non-woven fabric means a non-woven fabric in which an electric charge is retained in the non-woven fabric, preferably a non-woven fabric obtained by applying a high direct current between a water electrode and a needle electrode.

Further, in the present invention, by combining a plurality of units of the combination of the charged non-woven fabric and the material containing silver and the non-woven fabric as described above, first, the non-woven fabric is used to remove large floating matters such as dust and hair, and then charged. The formed non-woven fabric mainly removes small dusts and organic substances such as proteins and lipids, and the material containing silver mainly sterilizes microorganisms and the like. Various combinations of filter materials for the bathtub filter of the present invention are used. For example, as a combination order, a plurality of combination units in the order of the charged non-woven fabric-containing material on the inflow side of the bath water are arranged. When a non-woven fabric is used, this non-woven fabric is placed on the inflow side of the bath water, and then a plurality of charged non-woven fabric-materials containing silver are combined in this order.
Still another combination is to arrange a plurality of non-woven fabrics on the inflow side of the bath water, then to arrange a plurality of electrically charged non-woven fabrics, and then to arrange a plurality of materials containing silver, and further to arrange the non-woven fabrics on the inflow side of the bath water. Arranged and then arranged a plurality of units in the order of charged non-woven fabric-material containing silver-charged non-woven fabric,
Further, a plurality of combination units of non-woven fabric-charged non-woven fabric-material containing silver are arranged. Furthermore, the combination of these filter materials may be stacked to form a cylindrical shape, or may be formed into a cylindrical shape or a bellows shape.

In the filter material used in the present invention, the non-woven fabric for removing large dust and hair may be a non-woven fabric usually used in the technical field of bathtub filters. The charged non-woven fabric may be any one as long as the non-woven fabric is charged, but is preferably made of a small fibrous material of a non-polar polymer substance, and all of the respective fibers have a homo-charged charge. Possessed (described in JP-B-56-47299, column 2, line 17 to line 19), fiber electrit (JP-B-59)
-124, column 5, line 15 to line 28), electret filter (JP-A-60-15).
No. 0812, page 2, right column, upper column, lines 7 to 18), electret nonwoven fabric (JP-A-61-2)
No. 11027, page 2, left column, lower column, lines 2 to 14)) and the like.

The material containing silver, which is the filter material used in the present invention, is preferably a non-woven fabric (also referred to as a silver-plated non-woven fabric) made of a silver-plated fibrous material. Natural fibers, synthetic fibers, and inorganic fibers are used. Examples of the natural fibers include cotton, hemp, and regenerated cellulose. Examples of the synthetic fibers include polyamide, acrylic, polyolefin (for example, polyethylene), polyester, aramid, polyurethane, It is each fiber such as vinyl chloride and carbon fiber. Examples of the inorganic fiber include wollastonite and asbestos. These natural fibers, synthetic fibers, and inorganic fibers are natural fibers,
The synthetic fibers and the inorganic fibers may be used alone or in combination of two or more. Also these natural fibers,
Synthetic fibers and inorganic fibers may be mixed and used. It can be adjusted by changing the amount of silver to 1 to 100 g per 1 m ² of the nonwoven fabric. The silver-plated nonwoven fabric used in the present invention includes those described in Japanese Patent Application No. 6-239703, paragraph 4, paragraphs [0008] to [0012].

In addition, as a material containing silver used in the present invention, the form of silver is fibrous, linear, thread-like, string-like, net-like, cloth-like, non-woven fabric, sponge-like with open cells or innumerable holes. It may be made of a plate-like body having a. If silver is made into a fibrous shape and a thread shape, a silver wire is drawn into a fibrous shape to form fibers at an appropriate stage. (Hereinafter, it is also referred to as silver fiber.) Further, a filament or a non-woven fabric is formed from this fiber, and a string, a net, or a woven fabric is formed from the yarn. The plate-shaped body having innumerable holes is produced by making appropriate holes in a silver plate, and the holes may have any shape, for example, triangle, circle, ellipse, square, pentagon, hexagon. , Polygonal holes are formed.

The silver-made filter member of the present invention may further contain silver-plated fibers or non-silver-plated fibers as described above, as long as the effects of the present invention are not impaired.
Further, both silver-plated fibers and non-silver-plated fibers may be included. This non-silver-plated fiber may be a mixture of natural fiber, synthetic fiber and inorganic fiber. Natural fibers include cotton, hemp,
Examples thereof include regenerated cellulose, and synthetic fibers include polyamide, acrylic, polyolefin (for example, polyethylene), polyester, aramid, polyurethane, vinyl chloride, carbon fiber and the like. Examples of the inorganic fiber include wollastonite and asbestos. These natural fibers, synthetic fibers, and inorganic fibers may be used even if only one kind of each of the natural fibers, synthetic fibers, and inorganic fibers is used, or 2
You may use it in mixture of 2 or more types. The mixing ratio of these is 4
It is 0% or less, preferably 30% or less. In the case of silver fiber, the thickness of silver fiber is 0.1-20d (d = denier)
If it is thinner than 0.1d, it may be difficult to pass bath water or spinning may be difficult, and if it is thicker than 20d, spinning may be unfavorable.

Explaining a mixed mode of silver-plated fibers and / or non-silver-plated fibers in silver fibers as a material containing silver used in the present invention, (a) silver fibers are mixed with silver-plated fibers and non-silver-plated fibers. The fiber obtained by spinning is spun into a yarn or a non-woven fabric, (b) a string is formed using the yarn, or a yarn consisting only of silver-plated fibers and a yarn consisting only of non-silver-plated fibers Or to form a yarn, or to form a yarn by spinning three types of yarns consisting of silver fibers and silver-plated fibers only and non-silver-plated fibers (c) There is an aspect of forming a cloth, a net or the like by using the above thread.

[0013]

In the present invention, the combination of filter materials is
By combining the charged non-woven fabric with the silver-plated non-woven fabric, the charged non-woven fabric has the effect of adsorbing and removing small dust and proteins, and the silver-plating non-woven fabric sterilizes the bath water by the sterilizing effect of silver. Due to its bactericidal effect, microorganisms cannot reproduce, so there is no odor or slime. Therefore, the bath water can always be kept clean. Further, the apparatus can be miniaturized by combining these non-woven fabrics with non-woven fabrics for removing large dusts, hairs, etc. to make them compact, installing them in one tank, and performing filtration and sterilization.

[0014]

EXAMPLES The present invention will now be described in more detail with reference to examples, but it goes without saying that the present invention is not limited to these examples and is included in the present invention within the scope equivalent thereto. .

Example 1 A nonwoven fabric, a charged nonwoven fabric, and a silver-plated nonwoven fabric were each cut into a circular shape, and these were combined to form a filter as shown in FIG. FIG. 1 is a schematic perspective view showing the structure of a filter member of the present invention. As shown in FIG. 1, a nonwoven fabric 2 is arranged as a filter material, and then a charged nonwoven fabric 3-silver plated nonwoven fabric 4-charged. Five units arranged in order of the nonwoven fabric 3 were arranged. The filter materials stacked in this order were housed inside the filter to form the bathtub filter 21 of the present invention. Using this filter 21, the bath water was tested for filterability, sterilization and durability. Table 1 shows the results. As is clear from Table 1, the bath filter 21 of the present invention has a small number of general bacteria, a turbidity of zero, and a sustainability of one year or longer.

[0016]

[Table 1]

Example 2 As the filter 21 described in Example 1, the filter material was arranged as shown in FIG. The arrangement is such that five non-woven fabrics 2, five charged non-woven fabrics 3 and five silver-plated non-woven fabrics 4 are stacked in this order and then housed in the filter in the same manner as in Example 1 to prepare the bathtub of the present invention. The filter 22 was formed. This filter 22 was used to test the filterability, bactericidal property and durability of bath water. The results are shown in Table 2. As is clear from Table 2, the bath filter 22 of the present invention has a low general bacterium count, zero turbidity, and a sustainability of one year or longer.

[0018]

[Table 2]

Example 3 As the filter 21 described in Example 1, a filter 23 was formed in the same manner as in Example 1 except that the shape of the filter material was a donut shape with a hole 51 provided at the center. . The arrangement is shown in FIG. This filter 23
Was used to test the bath water for filterability, sterilization and durability. Table 3 shows the results.

[0020]

[Table 3]

As can be seen from Table 3, the bath filter 23 of the present invention has a small number of general bacteria, a turbidity of zero, and a sustainability of one year or longer.

Example 4 The combination of the filter materials described in Example 1 was formed into a tubular shape, and the units of the non-woven fabric 3 and the silver-plated non-woven fabric 4 which were sequentially charged from the inside were overlapped in three layers, as shown in FIG. A cylindrical filter 24 was formed, and the filterability, sterilization and durability of bath water were tested. The results are shown in Table 4. As is clear from Table 4, the bathtub filter 24 of the present invention has a small number of general bacteria, a turbidity of zero, and a sustainability of one year or longer.

[0023]

[Table 4]

Example 5 A filter portion 25 as shown in FIG. 5 was formed in the same manner as in Example 4 except that the filter 24 described in Example 4 was formed into a bellows shape, and the bath water was filtered. Tested for sex, bactericidal properties and persistence. The results are shown in Table 5. Table 5
As is clear from the above, the bathtub filter 25 of the present invention
Shows that the number of general bacteria is small, the turbidity is zero, and the sustainability is 1 year or more.

[0025]

[Table 5]

Example 6 FIG. 6 shows a circulating heat insulation purifying apparatus for bath water using the bath water filter of the present invention. In FIG. 6, reference numeral 13 is a cover for covering the entire apparatus, and a filter portion 1 and a circulation pump 6 for sending hot water to the filter portion 1 in the cover 13.
It has. The filter unit 1 has a cartridge 14, and the cartridge material 14 is filled in the cartridge 14. The filter 21 shown in FIG. 1 was used as this filter material 15, and the side having the nonwoven fabric 2 was placed downward. The bathtub 11 has a hot water inlet 12
The hot water in the bathtub 11 flows in from the hot water inlet 12 by the circulation pump 6 and flows in from the lower part of the filter unit 1 through the pump 6 and the hot water inlet 16 of the cartridge 14. From the hot water outlet 5 of the cartridge 14 through the layer of the filter material 15.

At this time, the non-woven fabric 2 of the filter material adsorbs large amounts of dirt such as hair, earth and sand or lint and dirt such as dust, and the charged non-woven fabric 3 adsorbs small dust, protein, dirt and the like. Further silver plated non-woven fabric 4
By sterilizing and killing various bacteria by this, hot water without odor and sliminess can be supplied. The hot water that has passed through the layer of the filter material 15 then flows through the pipe 9 in the direction of the arrow 10 and is heated through the heater 7, and then the hot water containing almost no suspended matter is discharged from the hot water outlet into the bathtub. Is released to.

[0028]

According to the present invention, since the non-woven fabric, the charged non-woven fabric and the silver-plated non-woven fabric 4 are used as the combination of the filter materials, the filter material having both the filter action and the sterilizing action can be stored in one tank. Therefore, it is possible to reduce the size of the device and easily replace the device, which is an excellent effect. Further, the bath filter of the present invention is excellent in sterilization properties as well as removing large and small dusts or suspended matters in the bath, and can maintain its antibacterial action for a long period of time.
It has an excellent effect that there is no smell or slimy water in the bathtub.

[Brief description of drawings]

FIG. 1 is a perspective view showing a combination of filter members of the present invention.

FIG. 2 is a perspective view showing another example of a combination of filter members of the present invention.

FIG. 3 is a perspective view showing another example of the combination of the filter members of the present invention.

FIG. 4 is a perspective view showing another example of a combination of filter members of the present invention.

FIG. 5 is a perspective view showing another example of the combination of the filter members of the present invention.

FIG. 6 is a perspective view showing a 24-hour bath purifying apparatus using the filter member of the present invention.

[Explanation of symbols]

1 Filter Part 11 Bathtub 2 Nonwoven Fabric 13 Cover 3 Charged Nonwoven Fabric 14
Cartridge 4 Silver plated non-woven fabric (material containing silver) 15 Filter material 5 Hot water outlet 12, 14
Hot water inlet 6 Circulation pump 21, 22
Cylindrical type 7 Heater 23 Donut type 8 Hot water discharge port 24 Tube type 9 Pipe or tube 25 Bellows type 10 Hot water flow direction (arrow) 51 hole

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location B01D 39/16 D04H 13/00 D04H 13/00 B01D 35/02 J

Claims (6)

[Claims] 1. A bath filter, wherein the filter material is composed of a combination unit of a charged non-woven fabric and a material containing silver. 2. The bathtub filter according to claim 1, wherein the filter material contains a non-woven fabric. 3. A filter for a bathtub, wherein the combination of filter materials is at least one non-woven fabric and at least one combination unit of the filter materials according to claim 1. 4. The bathtub filter according to claim 1, wherein the charged non-woven fabric is an electret non-woven fabric. 5. The bathtub filter according to claim 1, wherein the filter structure has a cylindrical shape. 6. The bathtub filter according to claim 1, wherein the filter structure is a bellows type.