TWI408106B - Purification cartridge and water purifier - Google Patents

Abstract

Disclosed are a water purifier cartridge that is vertically compact and maintains a sufficient flow rate, and a water purifier that is fitted with the same. More specifically disclosed are a water purifier cartridge (10) provided with a housing (12), an adsorption purification unit (14) that is housed within the housing (12), and a membrane filtration purification unit (16) that is housed within the housing (12) and is positioned farther downstream than the adsorption purification unit (14), wherein the membrane filtration purification unit (16) has a hollow fiber membrane (70) housed within a tubular body (74) that has openings on the top and sides, and the adsorption purification unit (14) is formed by filling an adsorbent (90) between the inner walls of the housing (12) and the outer walls of the tubular body (74) of the membrane filtration purification unit (16) and within the housing (12) above the membrane filtration purification unit (16); and a water purifier in which the water purifier cartridge (10) has been fitted between a raw water storage unit on top and a pure water storage unit on bottom.

Description

Water purification filter and water purifier

The present invention relates to a water purification cartridge and a water purifier.

The present application is based on Japanese Patent Application No. 2009-214889, filed on Sep.

There is known a water purifier which is filled with a water purification filter between the upper raw water storage portion and the lower purified water storage portion, and the raw water from the raw water storage portion passes through the housing of the purified water filter due to its own weight. The clean water part contained in the inside is discharged into the purified water storage part after being purified.

Further, as a water purification filter, a water purification filter in which an adsorption water purification unit and a membrane filtration water purification unit are arranged in series in the vertical direction is known, and the adsorption water purification unit is formed by filling an adsorption material in a cylindrical body. In the membrane filtration water purification unit, a membrane filtration material such as a hollow fiber membrane is accommodated in the same cylindrical body (see Patent Document 1).

However, the vertical direction of the water purification filter in which the adsorption water purification unit and the membrane filtration water purification unit are arranged in series in the vertical direction is lengthened.

Therefore, there has been proposed a water purification filter in which the adsorption water purification unit is disposed on the side of the membrane filtration water purification unit and is compact in the vertical direction (Patent Document 2 and Patent Document 3).

However, in the water purification filter in which the adsorption water purification unit is disposed in the side of the membrane filtration water purification unit, the water that has passed through the water purification unit only infiltrates the membrane filtration water purification unit from the side, and cannot enter from the upper side. There is a problem that the water passing rate is slow.

[Previous Technical Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2004-230335

[Patent Document 2] Japanese Utility Model Registration No. 3107287

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2009-125663

The present invention provides a water purification filter that is compact in the up-and-down direction and ensures a sufficient water flow rate, and a water purifier loaded with the water purification filter.

The water purification filter of the present invention comprises: a casing; an adsorption water purification unit housed in the outer casing; and a membrane filtration water purification unit housed in the outer casing and located on a downstream side of the adsorption water purification unit, the water purification filter The membrane filtration water purification unit houses a membrane filter material in a cylindrical body having an opening at an upper portion and a side portion, and the adsorption water purification unit is a cylindrical shape of the inner peripheral wall of the outer casing and the membrane filtration water purification unit. The outer casing of the body and the outer casing above the membrane filtration water purification unit are filled with an adsorbent.

In the water purification filter of the present invention, the shortest distance A from the upper surface of the adsorption water purification unit to the upper surface of the membrane filtration water purification unit, and the inner peripheral wall from the outer casing to the membrane filtration water are preferably used. The average distance B from the outer peripheral wall of the cylindrical portion of the portion satisfies the relationship of the following formula (1).

A/B≧1.5 (1)

However, B is obtained by the following formula (2).

B=(B _max +B _min )/2(2)

In the formula, B _max is the longest distance from the inner peripheral wall of the outer casing to the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit, and B _min is a cylindrical shape from the inner peripheral wall of the outer casing to the membrane filtration water purification unit. The shortest distance from the outer peripheral wall of the body.

In the water purification filter of the present invention, the shortest distance A from the upper surface of the adsorption water purification unit to the upper surface of the membrane filtration water purification unit and the outer circumference of the cylindrical body of the membrane filtration water purification unit are preferably used. The height C of the portion where the wall contacts the above-mentioned adsorption water purification portion satisfies the relationship of the following formula (3).

A/C≧0.3 (3).

In the water purifier according to the present invention, the water purification filter of the present invention is configured such that the upper side of the outer casing communicates with the raw water storage portion, and the bottom side of the outer casing is located in the purified water storage portion, and is loaded in the upper portion. Between the raw water storage portion and the lower purified water storage portion.

(Effect of the invention)

The water purification filter of the present invention is compact in the up and down direction and ensures a sufficient water passing speed.

The water purifier of the present invention is compact in the up and down direction and can purify raw water in a short time.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

<Water Purification Filter>

The water purification filter of the present invention comprises: an outer casing; an adsorption water purification unit housed in the outer casing; and a membrane filtration water purification unit housed in the outer casing and located on the downstream side of the adsorption water purification unit, from the upper side of the outer casing The raw water that has been introduced passes through the water purification unit due to its own weight, and is discharged from the bottom side of the outer casing after the water is purified. The water purification filter is characterized in that the membrane filtration water purification unit accommodates the membrane in the cylindrical body having an opening at the upper portion and the side portion. The filter material and the adsorption water purification unit are formed by filling an adsorbent material between the inner peripheral wall of the outer casing and the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit and the outer casing of the membrane filtration water purification unit.

Fig. 1 is a cross-sectional view showing an example of a water purification filter of the present invention.

The water purification filter 10 has a casing 12, an adsorption water purification unit 14 housed in the casing 12, and a membrane filtration water purification unit 16 housed in the casing 12 and located further downstream of the adsorption water purification unit 14.

(shell)

The outer casing 12 includes: a substantially cylindrical outer casing body 20; a substantially bowl-shaped outer casing cover 22 mounted to cover the upper opening of the outer casing body 20; and a substantially bowl-shaped inner cover 24 to cover the outer casing The upper portion of the body 20 is open and attached to the inner side of the outer casing cover 22.

The casing body 20 includes a large-diameter portion 30, and a small-diameter portion 32 that is disposed coaxially with the large-diameter portion below the large-diameter portion 30, and a ring-shaped segment portion 34 that connects the lower end of the large-diameter portion 30 with The upper end of the small diameter portion 32, the disk-shaped bottom portion 36, the opening on the lower side of the small diameter portion 32, and the water purification discharge port 38 are formed in the bottom portion 36.

By forming a plurality of clean water discharge ports 38 at the bottom portion 36 of the outer casing main body 20, even if the water passes through the water purification filter 10 only due to its own weight (that is, a pressure of 0.01 MPa or less), it stays in the gap 80 described later. When the inside air is ejected from the clean water discharge port 38 in the air gap 80, it is also easily discharged from the clean water spout 38 together with the clean water. Further, since the clean water discharge port 38 is formed only at the bottom portion 36 of the outer casing main body 20, and the water-purge discharge port 38 is not formed at the side portion of the outer casing main body 20, the water-purge discharge port 38 is easily formed, and the outer casing can be easily manufactured.

As the water purification nozzle 38, as shown in FIG. 2, a circular center discharge port 40 and a slit-shaped peripheral discharge port 44 are formed, and the center discharge port 40 is formed at the center of the bottom portion 36, and the peripheral spray is formed. The outlet 44 is formed at four points on the concentric circle 42 of the central discharge port 40 and extends in the circumferential direction of the concentric circle 42. When the purified water discharge port 38 having a different shape and size is provided, a difference in water pressure can be generated between the central discharge port 40 and the peripheral discharge port 44. As a result, the air remaining in the gap 80 to be described later is more easily combined with the purified water. The self-cleaning water discharge port 38 is vented.

As shown in FIGS. 2 and 3, the water purification nozzle 38 preferably has a maximum diameter R of the opening 46 on the outer side of the outer casing 12 of 10 mm or less. When the maximum diameter of the outer opening 46 is 10 mm or less, a finger or the like cannot be inserted into the outer casing 12 from the water-purifying discharge port 38. The maximum area of the outer opening 46 is preferably 0.03 cm ² or more from the viewpoint that the air remaining in the space 80 to be described later is easily discharged from the water-purge outlet 38.

As shown in FIG. 3, the water purification nozzle 38 has a taper hole 50 which is gradually reduced in diameter from the inner side of the outer casing 12 and a small diameter hole 52 which extends downward from the taper hole 50. That is, the diameter of the opening 46 on the outer side of the outer casing 12 is smaller than the diameter of the opening 48 on the inner side of the outer casing 12. If the diameter of the outer opening 46 is smaller than the diameter of the inner opening 48, the clean water passing between the inner opening 48 and the outer opening 46 is liable to generate a differential pressure, so that the air is more easily combined with the purified water. Leak out. The area of the outer opening 46 is preferably 1% or more smaller than the area of the inner opening 48.

The outer casing cover 22 has a head top portion 54 that protrudes upward from the center of the upper portion, a raw water introduction pipe 56 that extends upward from the center of the head top portion 54, and a twist lock that is provided at an edge portion of the head top portion 54 ( Twist lock).

The inner lid body 24 has a head top portion 60 that protrudes upward from the center of the upper portion, a plurality of slit-shaped air leak holes 62 that are radially formed on the upper surface of the head top portion 60, and a plurality of water intake ports formed at the side portions. 64; and a mesh 66 covering the water intake 64.

The inner lid body 24 is a lid body that is slightly smaller than the outer shell cover 22 and has substantially the same shape as the outer shell lid body 22. Therefore, a gap is formed between the outer casing cover 22 and the inner lid body 24 from the top of the head portion, and the gap is the raw water flow path 68 from the raw water introduction pipe 56 to the water intake port 64.

Examples of the material of the outer casing 12 include a resin (Acrylonitrile Butadiene Styrene (ABS) resin, polycarbonate, acrylic resin, polypropylene, and polystyrene. (polystyrene), etc., metal (stainless), and the like.

(membrane filtration water purification department)

The membrane filtration water purification unit 16 is a so-called hollow fiber membrane module, that is, a plurality of hollow fiber membranes 70 bent in a U shape are opened at the end of the hollow fiber membrane 70 by maintaining an opening at the end thereof. The bonding portion 72 integrates the hollow fiber membranes 70 and fixes the hollow fiber membranes 70 in a state in which they are accommodated in the cylindrical tubular body 74.

The lower portion of the membrane filtration water purification unit 16 is fitted into the small diameter portion 32 of the casing main body 20 via the O-ring 84, and is embedded in the adsorption water purification unit 14 in addition to the portion fitted into the small diameter portion 32. The water that has passed through the adsorption water purification unit 14 is caused to invade from the upper side and the side.

In the membrane filtration water purification unit 16, an annular flange portion 76 is formed outward from the side portion of the tubular body 74. Therefore, when the lower portion of the membrane filtration water purification unit 16 is fitted into the small diameter portion 32 of the casing body 20, the flange portion 76 abuts against the segment portion 34 of the casing body 20, whereby the end portion of the hollow fiber membrane 70 is used. A gap 80 is formed between the clean water outlet 78 of the membrane filtration water purification unit 16 formed by the opening of the portion and the bottom portion 36 of the casing body 20.

The height of the void 80 is preferably from 1 to 20 mm. The height of the void 80 is more preferably 2 to 10 mm because the air retained in the void 80 is easily leaked from the clean water discharge port 38.

The hollow fiber membrane 70 is a porous membrane, and examples of the material thereof include polyethylene, polypropylene, poly(4-methylpentene-1), tetrafluoroethylene, and polyvinylidene fluoride ( Polyvinylidene fluoride), polystyrene, polysulfone, polyether ketone, polyether ether ketone, and the like.

The effective membrane area of the hollow fiber membrane 70 is preferably from 0.1 to 0.5 m ² . If the effective membrane area is 0.1 m ² or more, the filtration effect is fully exerted. If the effective membrane area exceeds 0.5 m ² , the filtration performance is saturated and the filtration effect is hardly improved.

The joint portion 72 is a portion formed by curing the thermosetting resin. Examples of the thermosetting resin include an epoxy resin, a urethane resin, a silicon resin, and an unsaturated polyester resin.

The upper portion of the cylindrical body 74 is opened over the entire surface, and has a plurality of water outlets 82 at the side portions. Therefore, the water that has passed through the water purification unit 14 can enter the inside from the upper side and the side of the membrane filtration water purification unit 16. Further, a part of the adsorbent of the adsorption water purification unit 14 enters the inside of the membrane filtration water purification unit 16 from the upper opening and the side water outlet 82, but is above the hollow fiber membrane 70 or between the hollow fiber membranes 70. There may also be no adsorbent material in the gap.

(adsorption water purification department)

The adsorption water purification unit 14 is filled with an adsorbent material in the outer casing main body 20 between the inner peripheral wall of the outer casing main body 20 and the outer peripheral wall of the cylindrical body 74 of the membrane filtration water purification unit 16 and the membrane filtration water purification unit 16. Formed by 90.

Examples of the adsorbent 90 include powdery or granular adsorbent (activated carbon, zeolite, molecular sieve, etc.), fibrous adsorbent (fibrous activated carbon), and the like.

The particle diameter of the adsorbent 90 is preferably in the range of 0.36 to 1.7 mm. When the particle diameter of the adsorbent 90 is 0.36 mm or more, the pressure loss in the adsorbed water purification unit 14 becomes small, and the water passing speed is further improved. When the particle diameter of the adsorbent 90 is 1.7 mm or less, the adsorption effect is sufficiently exerted.

The shortest distance A from the upper surface of the adsorption water purification unit 14 to the upper surface of the membrane filtration water purification unit 16 and the average distance from the inner peripheral wall of the outer casing main body 20 to the outer peripheral wall of the cylindrical body 74 of the membrane filtration water purification unit 16 The distance B is preferably a relationship satisfying the following formula (1).

A/B≧1.5 ...(1)

However, B is obtained by the following formula (2).

B=(B _max +B _min )/2 ...(2)

In the formula, B _max is the longest distance from the inner peripheral wall of the outer casing main body 20 to the outer peripheral wall of the cylindrical body 74 of the membrane filtration water purification portion 16 , and B _min is from the inner peripheral wall of the outer casing main body 20 to the membrane filtration water purification portion 16 . The shortest distance from the outer peripheral wall of the cylindrical body 74.

A/B is preferably 1.5 or more. When A/B is 1.5 or more, a portion which is not used for the raw water flowing does not occur in the adsorbent 90, and the utilization efficiency of the adsorbent 90 is improved. A/B is preferably 2.0 or more. Further, from the viewpoint of assembly processing, A/B is preferably 10 or less.

In addition, the shortest distance A from the upper surface of the adsorption water purification unit 14 to the upper surface of the membrane filtration water purification unit 16 and the outer peripheral wall of the cylindrical body 74 of the membrane filtration water purification unit 16 are in contact with the portion where the water purification unit 14 is adsorbed. The height C preferably satisfies the relationship of the following formula (3).

A/C≧0.3 ...(3)

A/C is preferably 0.3 or more. When A/C is 0.3 or more, it is difficult to generate a short pass, and the utilization efficiency of the adsorbent 90 is improved. The A/C is preferably 1.0 or more, and most preferably 2.0 or more. Further, from the viewpoint of assembly processing and pressure loss, A/C is preferably 10 or less.

(purification of raw water)

The purification of the raw water by the purified water filter 10 is carried out in the following manner.

The raw water introduction pipe 56 introduced from the upper portion of the outer casing cover 22 flows into the inner cover body 24 due to its own weight in the raw water flow path 68 formed between the outer casing cover 22 and the inner cover body 24 due to its own weight. The water intake 64 of the side is up.

The raw water introduced into the casing body 20 from the water intake port 64 at the side of the inner lid body 24 flows down from the water intake port 64 toward the adsorption water purification portion 14 due to its own weight.

The raw water that has reached the upper portion of the adsorption water purification unit 14 causes the adsorption material 90 to adsorb impurities and the like contained in the raw water, and passes through the membrane filtration water purification unit 16 by the own weight in the adsorption water purification unit 14. Further, in the present invention, the raw water passes through the adsorption water purification unit 14 only by its own weight (that is, an ultra-low pressure of 0.01 MPa or less), so that the raw water also reaches the inner peripheral wall of the outer casing main body 20 and the membrane filtration water purification portion 16 The adsorbent material 90 is filled between the outer peripheral walls of the cylindrical body 74.

The water that has passed through the membrane-filtered water purification unit 16 enters the inside of the adsorption water purification unit 14 from above and to the side of the membrane filtration water purification unit 16 through the opening of the upper portion of the tubular body 74 and the water outlet 82 at the side.

The water that has entered the inside of the adsorption water purification unit 14 causes the hollow fiber membrane 70 to trap impurities and the like contained in the water by the water pressure generated by the water flowing down from the inside of the outer casing 12, and from the side of the hollow fiber membrane 70. The other side passes.

The purified water outlet 78 formed by the opening of the end portion of the hollow fiber membrane 70 by the clean water after the hollow fiber membrane 70 flows down to the clean water outlet 78 of the membrane filtration water purification unit 16 and the bottom portion 36 of the casing body 20 due to its own weight. The void 80 is formed and temporarily stored.

The purified water in the air gap 80 is ejected from the bottom 36 of the casing body 20 to the outside of the casing 12 by its own weight.

(Effect)

In the water purification filter 10 described above, the membrane filtration water purification unit 16 houses the hollow fiber membrane 70 in the cylindrical body 74 having an opening at the upper portion and the side portion, and the adsorption water purification portion 14 is inside the casing body 20. The outer wall of the cylindrical body 74 of the membrane filtration water purification unit 16 and the outer casing main body 20 further above the membrane filtration fish water portion 16 are filled with an adsorbent material, and thus the water from the membrane of the water purification unit 14 is adsorbed. The upper side and the side of the filtered water purification unit 16 are invaded. As a result, the amount of water passing through the water purification filter 10 is increased, and a sufficient water passing speed can be secured.

Further, in the water purification filter 10 described above, a part of the adsorption water purification unit 14 is disposed on the side of the membrane filtration water purification unit 16, so that a water purification filter that is compact in the vertical direction can be realized.

(other forms)

Furthermore, the water purification filter of the present invention is not limited to the water purification filter 10 of the illustrated example.

For example, in addition to the adsorption water purification unit 14 and the membrane filtration water purification unit 16, other water purification units may be further provided.

Further, as the membrane filtration water purification unit 16, another membrane module (such as a flat membrane module) may be used instead of the hollow fiber membrane module.

Further, the opening of the upper portion of the tubular body 74 of the membrane filtration water purification unit 16 and the water outlet 82 of the side portion may be covered by a net, a nonwoven fabric or the like so that the adsorbent 90 of the adsorption water purification unit 14 does not intrude.

Moreover, in the outer casing 12, it is not necessary to provide the inner cover body 24.

Further, a part of the water-purifying water discharge port at the bottom of the outer casing may be formed at a position higher than the other water-purifying water discharge ports to set a height difference between the water-purifying water discharge ports. For example, as shown in FIG. 4, the bottom portion 36 of the casing main body is a hemispherical dome type that protrudes downward, and the peripheral discharge port 44 is provided at a position higher than the center discharge port 40. At this time, a water pressure difference is generated between the clean water discharge port at the high position and the clean water spray port at the low position, and as a result, the air is more easily discharged from the clean water spray port together with the purified water. Moreover, even in the case where the water purifying filter is inclined, the air is liable to leak out from the clean water spout.

Further, the water purification nozzle is not limited to the water purification nozzle 38 formed of the tapered hole 50 and the small diameter hole 52 as exemplified in the drawing, and may be a tapered hole which is gradually reduced in diameter from the inner side toward the outer side of the outer casing. Composition. Moreover, the inclination of the tapered hole can be neither fixed nor gradually changed as shown in the example.

<Water Purifier>

Fig. 5 is a cross-sectional view showing an example of a water purifier of the present invention.

The water purifier 100 includes an upper container 104 having a raw water storage portion 102, and a lower container 108, which is inserted into the upper container 104 by the upper half to be the purified water storage portion 106; the water purification filter 10 is provided with the upper portion of the outer casing 12. The raw water introduction pipe 56 communicates with the raw water storage portion 102, the bottom portion 36 of the outer casing 12 is placed in the purified water storage portion 106, and is loaded into the bottom portion 110 of the upper container 104, and the lid body 112 covers the opening of the upper portion of the upper container 104.

A filling hole 120 is formed in the bottom portion 110 of the upper container 104. The filling hole 120 includes a large diameter hole 114, a small diameter hole 116, and a longitudinal groove for twisting locking formed on the inner peripheral wall of the large diameter hole 114 (omitted from illustration And a twist lock lateral groove 118 formed continuously on the inner peripheral wall of the large diameter hole 114 continuously with the twist lock longitudinal groove.

The filling of the water purification filter 10 to the bottom portion 110 of the upper container 104 is performed by the large diameter hole 114, the small diameter hole 116, and the vertical groove for twisting locking to the filling hole 120 (omitted from illustration Inserted into the top portion 54 of the outer casing cover 22 of the water purification filter 10, the raw water introduction pipe 56, and the twist locking projection 58 provided on the edge portion of the head top portion 54, respectively, and then the water purification filter 10 is The twisting locking projection 58 of the head top portion 54 of the outer casing cover 22 is engaged with the twist locking lateral groove 118 of the loading hole 120 in the circumferential direction.

(Effect)

In the water purifier 100 described above, the water purification filter 10 which is compact in the vertical direction and ensures a sufficient water flow rate is installed, so that the vertical direction can be made compact and the raw water can be purified in a short time.

(other forms)

Furthermore, the water purifier of the present invention is not limited to the water purifier 100 of the illustrated example.

For example, a raw water inlet pipe and a raw water inlet pipe of a water purification filter, which are constituted by a tank or the like, may be connected by a hose or the like, and may be filled in the upper portion of the purified water storage portion including a water tank or the like. The water purifier of the water purification filter type may be a water purifier of a pitch type disclosed in Patent Document 1, Patent Document 3, or the like.

[Example]

The following shows an example.

[Examples 1 to 10]

First, the water purification filter 10 shown in Fig. 1 was produced in the following manner.

The case body 20, the case cover 22, and the inner cover body 24 are formed using ABS resin as a material and are formed by an injection molding method. The diameter of the opening 46 on the outer side of the central discharge port 40 is 10 mm (area 0.8 cm ² ), the diameter of the inner opening 48 is 11 mm (area of 0.95 cm ² ), and the maximum diameter of the opening 46 on the outer side of the peripheral discharge port 44. The maximum diameter of the opening 48 of 6 mm (area 0.3 cm ² ) is 7 mm (area 0.4 cm ² ).

As the membrane filtration water purification unit 16, a hollow fiber membrane module having an effective membrane area of 0.3 m ² is used, that is, a plurality of polyethylene porous hollow fiber membranes (EX270TS, manufactured by Mitsubishi Rayon Co., Ltd., outer diameter 380 μmm, inside) The diameter of 270 μm and the average pore diameter of 0.1 μm are bent into a U shape, and are integrated by maintaining the opening of the end portion and filling the joint portion 72 (urethane resin) between the ends, and the hollow fiber membrane is formed. 70 is fixed in a state in which it is accommodated in the cylindrical cylindrical body 74 (made of ABS resin).

As the adsorbent 90, 350 cc of granular activated carbon having a particle diameter of 0.36 to 1.7 mm was used.

In addition, the dimensions of the outer casing main body 20, the outer casing cover 22, the inner cover body 24, and the cylindrical body 74 are appropriately set so that A/B and A/C become the values described in Table 1 and Table 2.

The lower portion (the side of the joint portion 72) of the membrane filtration water purification unit 16 is fitted into the small-diameter portion 32 of the casing body 20 via the O-ring 84, and the flange portion 76 of the membrane filtration water purification portion 16 and the casing body 20 are attached. The segment 34 is ultrasonically welded. The height of the gap 80 is set to 2 mm between the clean water outlet 78 of the membrane filtration water purification unit 16 formed by the opening of the hollow fiber membrane 70 and the bottom portion 36 of the casing body 20.

The inner peripheral wall of the outer casing main body 20 and the outer peripheral wall of the cylindrical body 74 of the membrane filtration water purification unit 16 and the outer casing main body 20 further above the membrane filtration water purification unit 16 are filled at a packing density of 0.45 g/cc. The adsorbed water portion 14 is formed by adsorbing the material 90.

The inner cover body 24 and the outer casing cover 22 are attached to the outer casing main body 20, and the peripheral edge portion of the outer casing main body 20 and the peripheral edge portion of the outer casing cover 22 are ultrasonically welded to obtain a water purification filter 10.

Then, the obtained water-purifying filter 10 is subjected to a water-passing test in accordance with JIS S3201, and for chloroform and free residual chlorine, the performance value of the adsorbent 90 is measured, and the adsorbent is obtained by the following formula (4). Utilization efficiency. The results are shown in Table 1 and Table 2.

Utilization efficiency of adsorbent material = (measured value of adsorbent material / performance value when using 100% of adsorbent material) × 100 ... (4)

Here, the performance value when 100% of the adsorbent is used is a performance value measured by filling the same amount of the adsorbent 90 into the column and performing the same water passing test without causing a short circuit.

[Industrial availability]

The water purification filter of the present invention passes through the purified water portion contained in the outer casing of the water purification filter as the raw water from the raw water storage portion, and becomes the water purification filter of the water purifier that is discharged into the purified water storage portion after the purified water is purified. Heart is useful.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

10. . . Water purification filter

12. . . shell

14. . . Adsorption water purification department

16. . . Membrane filtration water purification department

20. . . Shell body

twenty two. . . Housing cover

twenty four. . . Inner cover

30. . . Large diameter department

32. . . Small diameter department

34. . . Segment

36. . . bottom

38. . . Water purification outlet

40. . . Central discharge

42. . . Concentric circles

44. . . Peripheral discharge

46. . . Outer opening

48. . . Inner opening

50. . . Conical hole

52. . . Small diameter hole

54, 60. . . Top of the head

56. . . Raw water introduction tube

58. . . Twist locking projection

62. . . Air vent

64. . . Water intake

66. . . network

68. . . Raw water flow path

70. . . Hollow fiber membrane

72. . . Joint

74. . . Cylindrical body

76. . . Flange

78. . . Water purification outlet

80. . . Void

82. . . Water outlet

84. . . O-ring

90. . . Adsorbent material

100. . . Water Purifier

102. . . Raw water storage department

104. . . Upper container

106. . . Water purification department

108. . . Lower container

110. . . bottom

112. . . Cover

114. . . Large diameter hole

116‧‧‧ small diameter hole

118‧‧‧Twist locking locking slot

120‧‧‧ Filling holes

A‧‧‧The shortest distance from the upper surface of the adsorption water purification unit to the upper surface of the membrane filtration water purification unit

B _min ‧‧‧The shortest distance from the inner peripheral wall of the outer casing to the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit

B _max ‧‧‧The longest distance from the inner peripheral wall of the outer casing to the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit

C‧‧‧The height of the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit that contacts the portion where the water purification unit is adsorbed

R‧‧‧Maximum diameter

Fig. 1 is a cross-sectional view showing an example of a water purification filter of the present invention.

Figure 2 is a front elevational view of the bottom of the housing.

Figure 3 is an enlarged cross-sectional view of the bottom of the outer casing.

Fig. 4 is an enlarged cross-sectional view showing another example of the bottom of the outer casing.

Fig. 5 is a cross-sectional view showing an example of a water purifier of the present invention.

10. . . Water purification filter

12. . . shell

14. . . Adsorption water purification department

16. . . Membrane filtration water purification department

20. . . Shell body

twenty two. . . Housing cover

twenty four. . . Inner cover

30. . . Large diameter department

32. . . Small diameter department

34. . . Segment

36. . . bottom

38. . . Water purification outlet

54, 60. . . Top of the head

56. . . Raw water introduction tube

58. . . Twist locking projection

62. . . Air vent

64. . . Water intake

66. . . network

68. . . Raw water flow path

70. . . Hollow fiber membrane

72. . . Joint

74. . . Cylindrical body

76. . . Flange

78. . . Water purification outlet

80. . . Void

82. . . Water outlet

84. . . O-ring

90. . . Adsorbent material

A. . . The shortest distance from the upper surface of the adsorption water purification unit to the upper surface of the membrane filtration water purification unit

B _min . . . The shortest distance from the inner peripheral wall of the outer casing to the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit

B _max . . . The longest distance from the inner peripheral wall of the outer casing to the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit

C. . . The outer peripheral wall of the cylindrical body of the membrane filtration water purification unit contacts the height of the portion where the water purification portion is adsorbed

Claims (4)

A water purification filter comprising: a casing; an adsorption water purification unit having an adsorbent material and housed in the outer casing; and a membrane filtration water purification unit housed in the outer casing and located on a further downstream side of the adsorption water purification unit, The water purification filter is characterized in that the adsorption material is a powdery adsorption material, a particulate adsorption material or a fibrous adsorption material, and the membrane filtration water purification unit accommodates membrane filtration in a cylindrical body having an opening at an upper portion and a side portion. In the material, the adsorption water purification unit is filled with an adsorbent material between the inner peripheral wall of the outer casing and the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit, and the outer casing above the membrane filtration water purification unit. form. The water purification filter according to the first aspect of the invention, wherein the shortest distance A from the upper surface of the adsorption water purification unit to the upper surface of the membrane filtration water purification unit and the inner peripheral wall from the outer casing to the above The average distance B from the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit satisfies the relationship of the following formula (1), and A/B ≧ 1.5 (1), where B is obtained by the following formula (2) B = (B _max + B _min ) / 2 (2) where B _max is the longest distance from the inner peripheral wall of the outer casing to the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit, and B _min is The shortest distance from the inner peripheral wall of the outer casing to the outer peripheral wall of the cylindrical body of the membrane filtration water purification unit. The water purification filter according to the first or second aspect of the invention, wherein the shortest distance A from the upper surface of the adsorption water purification unit to the upper surface of the membrane filtration water purification unit is filtered with the membrane The height C of the portion where the outer peripheral wall of the cylindrical portion of the water portion contacts the above-mentioned adsorption water purification portion satisfies the relationship of the following formula (3), and A/C ≧ 0.3 (3). A water purifying filter according to any one of the items 1 to 3, wherein the upper side of the outer casing communicates with the raw water storage portion, and the bottom side of the outer casing is located at the net The water storage unit is installed between the upper raw water storage unit and the lower purified water storage unit.