JPH07308532A - Bathtub water cleaning filter - Google Patents

Abstract

PURPOSE:To remove impurities, fine dirt and soiling and further particularly to prevent the cloudiness. CONSTITUTION:A filter body A consisting of woven fabrics or non woven fabrics for filtering off impurities, fine dirt and soiling, from bathtub water is housed in a housing B. A bathtub water bypass part 10 through which a part of the bathtub water is passed without being filtered is installed outside the housing B. A flow detecting means 21 is installed in a discharge pass 7a of the housing 8. An opening/closing means 11 for causing a part of the bathtub water to flow or cutting off it is installed in the bathtub water bypass part 10. The opening/closing means 11 is provided with a control means 24 for driving it so that it may be opened only when the measured flow rate is not more than a prescribed one.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water purifying device for removing fine dust and dirt, which is an impurity, in a bath water purifying device, and particularly for automatically controlling the prevention of clouding. Regarding

[0002]

2. Description of the Related Art Conventional filters include a pre-filter for removing coarse dust such as hair and dust, a main filter (ordinary filter) for removing relatively large dust having an impurity particle size of about 10 ^-6 m or more, and a fine dust. It was composed of a filter material filter (adsorption filter material filter) of activated stone and activated carbon that removes. Therefore, about 10 ^-9 m or more in the middle, about 10 ^-6
It was not possible to remove colloidal dirt having an impurity particle size of m or less. As a result, a phenomenon called clouding of the bath water occurred.

The white turbidity will be described in detail.
It is considered that white turbidity occurs when fine colloidal particles having a size of about 10 ⁻⁹ m to about 10 m ⁻⁶ are dispersed in a stable state. The colloidal particles of this size are between the particles that can be filtered by the main filter and the particles that can be adsorbed and removed by activated carbon, etc., and the device at the time of installation does not have bacteria (bacteria) attached and must prevent its clouding. Was difficult.

Substances that cause the bath water to become cloudy are secretions from the body (amino acids contained in body fluids, proteins, etc.,
In addition, keratinized skin, body fluids containing special ingredients due to side effects of drunk medicines, etc., soaps, cosmetics, ointments (soap ingredients brought in through the body or towel, cosmetics, about 2,000 kinds or more contained in ointments) Inorganic and organic substances), dirt from bath kettle, solar system (dirt flowing out of bath kettle, solar system and piping, etc.), bath agent (in the commercially available bath agent, called turbid water), ,
It contains a large amount of heat-retaining ingredients, etc.), and the contamination of raw water (water supply, tap water used for hot water supply, cloudiness of raw water such as well water, etc.).

In the case of cloudiness of tap water, there are two cases, one is cloudy only immediately after coming out of a tap water tap and the other is cloudy actually. In the former case, the air that had dissolved in the water due to water pressure was suddenly released into the body pressure, so it appears as fine bubbles that appear cloudy at first sight, and there is no problem.

[0006]

On the other hand, in order to prevent white turbidity, a means of providing a filter of the same type has been taken, but the filter is clogged early, frequent filter replacement is required, and the flow rate is increased. There was a serious inconvenience such as the burden on the circulation pump due to the drop. Further, there is also a demand for improvement in the drawback that the main filter (normal filter), the filter medium filter (adsorption filter medium filter), and the filter for preventing white turbidity make the entire filter large and complicated.

[0007]

Therefore, as a result of intensive studies, the inventor of the present invention has found that the present invention consists of woven or non-woven fabric, and removes fine dust and impurities from bath water. A filter body for filtering is housed in a housing, a bath water bypass section through which a part of the bath water passes without being filtered is provided outside the housing, and a flow rate detecting means is provided at a discharge passage portion of the housing, and the bath water is provided. The bypass section is provided with opening / closing means for circulating / blocking a part of the bath water, and the opening / closing means is driven so as to be opened only when the value measured by the flow rate detecting means is equal to or less than a predetermined flow rate. By using a bath water purifying filter device or the like provided with means, fine dust and dirt as impurities are removed in the bath water purifying device, and particularly, the prevention of white turbidity is automatically controlled. Bets can be, also, can prevent a blocked, can eliminate a disadvantage such as strain on the circulation pump due to flow reduction is applied, is obtained by solving the above problems.

[0008]

First, all of the bath water that has flowed in through the suction passage first passes through the filter body and is filtered during this passage. When it is determined that the filter body has become clogged after a predetermined number of days (about 1 to about 2 weeks), it means that the flow rate detection unit has reduced the flow rate per unit time. The control means operates to open the opening / closing means, and a part of the bath water passes through the bath water bypass section without being filtered, and the filtered bath water and the unfiltered bath water flow into the lower housing. It is discharged from the discharge passage at the lower end.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described in detail with reference to the drawings. A is a filter main body, and the structure of the filter main body A is that the whole bath when stored in a housing B described later. Water is filtered, and the specific shape of the filter body A is as follows.
It is composed of the shielding lower lid 3 and the filter material A ₁ .

The filter material A ₁ is made of a woven fabric or a non-woven fabric so as to be able to filter the impurity particle size of about 10 ⁻¹² m or more. That is, not only fine colloidal particles having a size of about 10 ^-9 m to about 10 ^-6 m which can prevent clouding, but also the finest colloid particles having a size of about 10 ^-9 m or less which can be filtered with activated stone or activated carbon. It is designed to block the passage of various colloidal particles.

The filter material A ₁ has about 10
^-Precision filter 5 that functions as a precise filter that filters fine impurity particle sizes that are ^-10 m or more and approximately 10 ^-6 m or less, and normal filter that filters impurity particle sizes that are approximately 10 ^-6 m or more Ordinary filter 6 is present. The precision filter 5 and the ordinary filter 6 have the same shape. Further, at the center position of the filter material A ₁ , a cylindrical core material A ₀ having a large number of through holes formed around it may be provided or may not be provided.

As the filter material A _{1, there} are a filter material charged with a positive zeta potential and a filter material not charged with a positive zeta potential. The zeta potential is the electrical potential that exists across the solid-liquid interface. In general, fine colloidal particles that become dirty are often negatively charged with a zeta potential. Therefore, when the filter material A ₁ charged with a positive zeta potential is put into the dirt, the fine colloidal particles charged with the negative zeta potential are adsorbed on the filter material A ₁ . It has been confirmed that such a method is surely effective against cloudiness.

Further, the filter material A ₁ is formed as the filter face material 1 or is wound into a wound shape [FIG. 9].
(See (a)] and the like are present. When it is formed as the filter face material 1, it is formed into a strip plate shape, and a large number of this is bent into a pleat shape (see FIGS. 1 and 4 etc.),
Alternatively, it is classified into a roll shape (see FIG. 9B), or a plurality of layers formed (see FIG. 9C). In the present invention, a pleat-shaped product is particularly used. Specifically, the elongated flat filter face material 1 is bent inward and outward so as to be pleated as a whole. When viewed in a plan view, the filter material A _{1 has} a star shape, and the overall shape of the filter material A ₁ may be simply a columnar shape or a truncated cone shape.

The porous material 4 is mixed in the entire circumference or a part of the filter material A ₁ as needed. That is, the particles of the porous material 4 are mixed in a part or the whole of the filter material A ₁ . Examples of the type of the porous material 4 include diatomaceous earth, perlite (pearlite), zeolite, activated carbon and the like.

The diatomaceous earth as the porous material 4 is a siliceous Thai product composed of diatoms of diatom, which is a unicellular sow, and usually contains clay, volcanic ash, organic matter and the like. Moreover, the size is not uniform, but about 25 × 10 ^-6
It is usually about m and has many holes to see under a microscope, which are responsible for the unique physical and scientific properties of diatomaceous earth. Its essence is hydrous amorphous silicon dioxide similar to protein stone. In particular, it is used as an adsorbent and a filtration material.
The purified product is used as a carrier for a gas phase catalytic reduction catalyst. Generally, marine products are large in quantity but poor in quality, and lakes are small in quantity but good in quality.

Further, perlite (pearlite) as the porous material 4 is a glassy rhyolite which is formed into a large number of spherical or spiral crevices and is usually broken into small pearl-like lumps of 1 cm or less or rubles. is there. Zeolite as the porous material 4 is a hydrated silicate of adjusted porous aluminum or calcium (or sodium). Further, the activated carbon as the porous substance 4 is characterized by having a very large surface area per unit volume because it has powdery, granular or pelletized amorphous carbon and innumerable fine pores.

As a concrete example, the pleated filter face material 1 (see FIG. 5A) is as shown in FIG.
As shown in (b), it is composed of three layers of a front surface layer 1a, an inner layer 1b, and a back surface layer 1c, and particles of diatomaceous earth serving as a porous substance 4 are mixed only in the inner layer 1b. An extremely thin front surface layer 1a and a back surface layer 1c, and a thick internal layer 1
The inner layer 1b is configured so as to enclose b, and the inner surface 1b is configured such that the front surface side is rough and the back surface side is dense. The surface layer 1a and the back surface layer 1c are coarsely configured so that bacteria or the like can easily pass therethrough, so that the filter surface material 1 is folded [see FIG. Even if they are in close contact with each other, they are narrow but are sufficient as a flow path for bath water, and the inner layer 1b containing the porous substance 4 is mixed.
By enclosing it, it is possible to prevent detachment of the porous substance 4 that is extremely easily peeled off, and to protect the internal layer 1b from being damaged during cleaning.

By mixing the porous substance 4 in the filter face material 1 in this manner, bacilli (bacteria) are easily attached or propagated in a myriad of fine holes formed in the porous substance 4, and contaminated microorganisms. Decomposes to make a cleaning action. In particular, many bacteria are likely to adhere to the porous substance 4 at an early stage. The bacterium is a microorganism consisting of prokaryotic cells, often about 0.5 to 2
It has a size of 10 ^-6 m or less and is a single cell or a simple cell aggregate formed as a result of proliferation. Proliferation is generally due to even division, but some may show germination and uneven division. Some bacteria produce thermostable endospores.

Further, when a slurry made of the porous material 4 is mixed into the inside of the filter layer made of a porous material such as the filter body A, clogging of the filter body A is prevented,
The filtration efficiency can be remarkably increased. In addition, the filter body A may be made of only the material, and the porous substance 4 may not be mixed in or attached thereto (see FIG. 5D).

The shielding upper lid 2 and the shielding lower lid 3 are provided,
The shielding lower lid 3 is provided with an outflow hole 3a. From the side of the filter material A ₁ (peripheral surface), the bath water, in order to be satisfactorily filtered outflow hole 3a is provided in association with the hole shape of the outflow portion h of the filter material A _1.

The outer diameter of the shielding lower lid 3 is larger than the outer diameter of the shielding upper lid 2. The outer diameter of the shielding lower lid 3 is formed to be substantially equal to the inner diameter of the housing B described later. Side surface (circumferential surface) of the filter material A ₁
Therefore, the outer diameter of the shielding upper lid 2 and the outer diameter of the shielding lower lid 3 are not limited as long as the bath water is sufficiently introduced.

The filter material A ₁ is formed as a single material or is compounded. Explaining the specific contents of the composite, as shown in FIG. 6, it is made of a material that is appropriately divided in the circumferential direction and subjected to different treatments at appropriate angles, or as shown in FIG. It is divided into a plurality of columns and arranged, or as shown in FIG. 8, they are arranged in parallel in the radial direction in an annual ring shape. The material is made of anionized Aa or cationized Ac, or lipophilic As.

As described above, the dirt component of fine colloidal particles is generally said to be negatively charged, but depending on the dirt, it may be positively charged, or Contamination by the oil component of the human body is not positively or negatively charged. For this reason, the anionized Aa refers to a filter treatment for adsorbing negatively charged colloidal particles, and the anionized Ac for adsorbing positively charged colloidal particles. The term “filter treatment” refers to a filter that uses lipophilic As to filter oil components that are not positively or negatively charged. As described above, since the pollutant components of the bath water are varied, the anionization treatment Aa and the cationization treatment A are performed.
c, the lipophilic As filter material A ₁ is preferable from the viewpoint of removing dirt.

Reference numeral B denotes a housing, which has a tubular container shape and is formed by being divided into two parts, a lower bowl-shaped lower housing 7 and a substantially bell-shaped upper housing 8 (FIG. 1).
Etc.). At the lower end of the lower housing 7, a short tubular discharge passage 7a is provided, and at the upper end of the upper housing 8, a short tubular suction passage 8a is provided. The bowl-shaped lower housing 7 and the bell-shaped upper housing 8 are coupled to each other, and the filter body A is provided so as to be housed therein.

When the filter body A is housed in the housing B, the whole bath water is filtered as described above. Specifically, the upper surface of the filter body A and
Voids 9 are formed between the inner wall of the housing B and the outer diameter of the filter body A and the inner diameter of the housing B.

Only the filter body A is housed in the housing B, which is composed of a circulation pump 12 and a heater 13 for keeping the bath water warm. The filter-related member, the circulation pump 12, and the heater 13 are connected to each other by a circulation pipe 14, and both ends thereof are located in the bath 15 (see FIG. 11).

Outside the filter body A, there is provided a bath water bypass portion 10 through which a part of the bath water passes without being filtered. Specifically, it is provided as a pipe between the suction passage 8a of the upper housing 8 and the discharge passage 7a of the lower housing 7. The bath water bypass section 10 is provided with an opening / closing means 11 (see FIG. 1).

The opening / closing means 11 is actually a regulating valve, and is for electrical control. As shown in FIGS. 1 and 2, a regulating valve 11 a is provided at an appropriate position in the bath water bypass portion 10 so as to be openable and closable. Further, the flow rate detecting means 21 is provided at the outflow hole 3a of the shielding lower lid 3, which is connected to the end of the bath water bypass portion 10, that is, at the discharge passage 7a of the housing B, and filters the inside of the filter body A. The flow rate of bath water is detected.
The flow rate detecting means 21 is a central processing unit (CPU) 20.
It is connected to the.

Further, a proper flow rate storage means 22 for storing and storing the proper flow rate obtained experimentally or empirically is provided,
A flow rate comparing means 23 for comparing the proper flow rate stored in the proper flow rate storing means 22 with the current flow rate is provided, and when the flow rate comparing means 23 is no longer the proper flow rate,
That is, when the flow rate of the bath water becomes low, the filter body A is clogged, and only in this case, the output signal operates and the central processing unit (CPU) is activated.
The control means 24 for controlling the pressure regulating valve connected to 20 operates, and the driving means 25 such as a solenoid operates, so that the pressure regulating valve 11a as the opening / closing means 11 operates at an appropriate angle (with the full opening at 90 degrees). Is set to an appropriate angle).

Further, when it is judged that the filter body A is clogged, the flow rate detecting means 21 has decreased the flow rate per unit time. In this case, the control means 24 is operated. At the same time as the operation, the alarm device 26 is turned on, if necessary, to issue an alarm such as sound or light. Further, there is provided a flow rate detection start command means 27 which starts the flow rate detection of the flow rate detection means 21 and issues a command to compare the proper flow rate with the current flow rate.

Next, description will be made with reference to the flowchart shown in FIG. First, when it is started, the detection switch, which is the bath water flow rate detection start command means 27, is turned on (see S1). Then, the current flow rate detecting means 21 operates to measure the current flow rate (see S2). At the same time, the proper flow rate stored in the proper flow rate storage means 22 and the current flow rate are compared and judged by the flow rate comparison means 23 (see S3). In this case, if the flow rate is smaller than the proper flow rate, the control means 2
4 operates to open the opening / closing means 11 in order to secure a predetermined flow rate via the driving means 25 such as a solenoid, and allows the bath water to pass through the bath water bypass section 10. It is determined whether the opening / closing means 11 is fully opened (see S5), and if it is not fully opened, the process further returns to S2. When the opening / closing means 11 is fully opened, the fully opened state is maintained, a clogging alarm is issued (see S6), and a series of operations is ended.

In the figure, 30 is a pre-filter for removing large dust such as hair, 31 is an ozone generator, 32 is an electromagnetic valve for supplying air, 33 is a check valve for water, 34 is an air check valve, and 35 is the above-mentioned. It is a nozzle portion at the tip of the circulation pipe 14.

The adsorbent filter medium filter 16 is used as needed when a large amount of bath water is used. The adsorbent filter medium filter 16 is composed of activated carbon 16a and activated stone 16b. As shown in FIG. 5, the activated stone 16b is placed in the uppermost position of the housing B, and the activated carbon 16a is placed in the intermediate position of the separator B. Filter body A
Is provided. With such a configuration, it is possible to filter all of the fine dirt components and above.

When the filter body A and the adsorbent filter medium filter 16 are provided in the housing B, the bath water flowing into the housing B passes through the adsorbent filter medium filter 16 and all the bath water is passed by this passage. After being filtered, after passing through the filter, the adsorbent filter medium filter 16 is not provided, and the filter is filtered in the same manner as when only the filter body A is stored.

Further, since the filter body A and the adsorbent filter medium filter 16 described above are in a clogged state after a certain period of time (about 3 months to about half a year), it is necessary to wash them for maintenance. In this case, in order to make it easier to wash the clogged dirt component as a post-treatment, it is preferable to make the flow rate of the bath water in the bath water purifying device relatively slow.

[0036]

According to the first aspect of the present invention, the filter body A, which is made of woven or non-woven fabric and filters fine impurities and contaminants from the bath water, is housed in the housing B, and a part of the bath water is not filtered. A bath water bypass portion 10 that passes through is provided outside the housing B, and a discharge path 7 of the housing B is provided.
An opening / closing means 1 which is provided with a flow rate detecting means 21 at a position and which allows the bath water bypass portion 10 to flow and shut off a part of the bath water.
1 is provided and the opening / closing means 11 is driven so as to be opened only when the measured flow rate is less than or equal to a predetermined flow rate.
By using the bath water cleaning filter device provided with No. 4, first, it is possible to reliably filter fine dust and contaminant impurities, secondly, it is possible to surely prevent clouding, and thirdly, the filter. The main body A is less likely to be clogged, the labor of filter replacement can be saved, and fourthly, even if it is clogged, the flow rate can be easily secured, so that the pump can be prevented from being burdened.

According to the first aspect of the invention, in particular, when the measured flow rate is less than or equal to a predetermined flow rate, that is, when the filter body A is clogged or clogged, the flow rate per unit time (flow velocity) decreases. When it does, the control means 2
4 operates to open and close the opening / closing means 11, a part of the bath water also passes from the bath water bypass section 10, automatically clears the clogging state, and puts an excessive burden on the pump. Can be prevented.

As described above, in particular, the first white turbidity can be prevented, the clogging can be automatically prevented, the trouble of replacing the filter body A can be saved, and the pump is not excessively burdened. It has a synergistic effect such as being able to.

In the second aspect, the filter material A ₁ of the filter body A in the _first aspect is the filter face material 1
The filter face material 1 is a three-layer structure including a surface layer 1a, an inner layer 1b, and a back surface layer 1c, and a bath water prepared by mixing a porous substance 4 such as diatomaceous earth or pearlite into all or part of the inner layer 1b. By using the cleaning filter device, bacteria (bacteria) are easily proliferated in the porous substance 4 at an early stage, and impurities such as a dirt component are decomposed by the bacteria, for further cleaning.

In particular, according to the second aspect of the invention, since the filter face material 1 is the filter main body A formed by bending a large number of pleats, it is possible to increase the filtering area and improve the filtering efficiency. There are advantages.

Further, if the front surface layer 1a and the rear surface layer 1c are made rough and bacteria can easily pass therethrough, even if the pleat shape is further increased and it is substantially folded, the bath water It can be evenly distributed over the entire surface of the inner layer 1b, dramatically increasing the filtration area,
The filtration efficiency can be increased, and further, when the invention of claim 2 is washed after a certain period of time, it is possible to protect the inner layer 1b containing the porous substance 4 from being damaged.

According to a third aspect of the present invention, in the first aspect of the present invention, the filter body A is a bath water cleaning filter device in which the filter body A is charged with a positive zeta potential. When the bath water passes through the filter body A charged with a positive zeta potential, fine colloidal particles in the bath water, which are generally said to be charged with a negative zeta potential, are adsorbed on the filter body A. Therefore, there is an advantage that clouding can be further prevented.

Further, in claim 4, in claim 1,
The filter body A was composed of anionized Aa, cationized Ac, and lipophilic As, and was anionized Aa by using a bath water cleaning filter device constituted by combining these. Those that can adsorb negatively charged colloidal particles, those that have undergone cationization treatment Ac can adsorb positively charged colloidal particles, and those that are lipophilic As can either be positive or negative. In addition, it is possible to filter oil components that are not charged, and there is an advantage that it is possible to respond appropriately to various stain components in bath water. Those that have been subjected to anion treatment Aa, cation treatment Ac, and lipophilic As are particularly preferable in terms of stain removal.

According to the first aspect of the present invention, if the filter body A is a bath water cleaning filter device that serves as a precision filter 5 for filtering impurity particle sizes of about 10 ^-9 m or more and about 10 ^-6 m or less. In particular, there is an advantage that fine colloidal particles in the bath water that cause cloudiness can be removed, and in the claim 1, the filter body A is filtered to remove impurities having a particle size of about 10 ^-6 m or more. In the case of the bath water cleaning unit which is the ordinary filter 6, if it is used and filtered to remove impurities having a smaller particle size, it may be possible to prevent clouding.
Further, in claim 1, if the filter body A is a bath water cleaning filter device made of a single material, it is particularly effective in simplifying the configuration.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part of an electric control structure of the present invention.

FIG. 2 is a block diagram for electrically controlling the opening / closing means.

FIG. 3 is a flowchart for electrically controlling the opening / closing means.

FIG. 4 is an exploded perspective view of a filter body.

5A is an enlarged cross-sectional view of a filter face material, FIG. 5B is an enlarged cross-sectional view of an essential part of FIG. 5A, and FIG. 5C is an enlarged view of an essential part of the filter face material when the filter face material is folded. Sectional view (d) is an enlarged sectional view of the filter face material of another embodiment.

FIG. 6 is a perspective view of a filter body, which is anionized, cationized, and lipophilic, and is manufactured by separating each material into a plurality of pieces in the circumferential direction.

FIG. 7 is a perspective view in which the filter body is anionized, cationized, and lipophilic, and each material is separated into three layers and manufactured.

FIG. 8 is a perspective view in which the filter body is anionized, cationized, and lipophilic, and each material is manufactured by separating each material in an annular shape in the radial direction.

9A is a perspective view of a filter body formed in a spool shape, FIG. 9B is a perspective view of another embodiment of a filter body in a roll shape, and FIG. 9C is another perspective view of a filter body formed in a plurality of layers. Example perspective view

FIG. 10 is a cross-sectional view of an essential part of another embodiment in which an adsorbent filter medium filter is provided in the present invention.

FIG. 11 is a simplified circuit diagram in which a bath water purifying apparatus is provided with the present invention in which opening / closing means is electrically controlled.

[Explanation of symbols]

A ... Filter body A ₁ ... Filter material B ... Housing 1 ... Filter surface material 1a ... Surface layer 1b ... Inner layer 1c ... Back surface layer 4 ... Porous substance 5 ... Precision filter 6 ... Normal filter 7a ... Discharge path 10 ... Bath water bypass Part 11 ... Opening / closing means 21 ... Flow rate detecting means 24 ... Control means Aa ... Anionization treatment Ac ... Cationization treatment As ... Lipophilicity

Claims (4)

[Claims] 1. A bath water bypass portion, which is made of woven cloth or non-woven cloth, accommodates a filter body for filtering fine dust and impurities from the bath water in a housing and allows a part of the bath water to pass through without being filtered. A flow rate detecting means is provided outside the housing, a flow rate detecting means is provided at a discharge passage portion of the housing, and an opening / closing means is provided in the bath water bypass section for circulating / blocking a part of the bath water. A bath water cleaning filter device comprising a control means for driving the device so that it is opened only when the value measured by the means is below a predetermined flow rate. 2. The filter material of the filter body according to claim 1, wherein the filter material is a filter face material, and the filter face material has three layers of a surface layer, an inner layer, and a back layer, and the inner layer is wholly or partially diatomaceous earth A bath water cleaning filter device characterized by being mixed with a porous material such as pearlite. 3. The bathtub cleaning filter device according to claim 1, wherein the filter material of the filter body is charged with a positive zeta potential. 4. The bath water according to claim 2, wherein the filter material of the filter main body is made of anionization treatment, cationization treatment and lipophilicity, and is formed by combining these. Cleaning filter device.