JPH0681692U - Cartridge for water purification - Google Patents

Abstract

(57) [Summary] [Purpose] The raw water is allowed to flow in uniformly without being unevenly distributed in the circumferential direction of the cartridge, and thereby the activated carbon fiber layer and the hollow fiber layer filled inside are well balanced in the circumferential direction. It is intended to provide a water purification cartridge adapted to be used. [Structure] The purified water outlet 61 is formed at the center of the connection adapter 60 provided at the inlet of the outer cylinder 31 of the purified water cartridge 30, and the raw water collides against the outer peripheral side of the purified water outlet 61. Abutting portion 62 and this abutting portion 62
From this, a plurality of raw water passage holes 26 are formed in the circumferential direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water purification cartridge, and more particularly to a water purification cartridge using two types of filtration materials.

[0002]

[Prior art]

 Tap water used for drinking contains about 1 ppm of chlorine for sterilization. This contained chlorine gives a person who drinks tap water a discomfort due to a chlorine odor. In addition, during the dry season, water odor that cannot be removed by normal water treatment at the water treatment plant remains in tap water, causing more discomfort than chlorine.

[0003] In order to remove such chlorine odors and blue-green odors, for example, a filter for water purification using an activated carbon fiber layer and hollow fibers as disclosed in Japanese Utility Model Publication No. 3-51032 is used. Water purifiers have been supplied and are becoming widespread.

[0004]

[Problems to be solved by the device]

 The water purification cartridge of a water purifier used in general households is a combination of two types of filtration materials, for example, activated carbon and hollow fibers. To remove suspended solids.

Such a domestic water purifier must have its cartridge compact so that it can be directly attached to a tap. Therefore, the hollow fiber is arranged on the center side and activated carbon is arranged on the outer circumference side.

In the water purification cartridge used in such a water purifier, purified water is discharged through a water purification outlet formed at the center of a connection adapter attached to the opening on one end side of the outer cylinder. It is like this. A raw water inlet is provided at a predetermined position around the purified water outlet, and the raw water is guided to the outer peripheral side portion of the cartridge through the raw water inlet.

According to such a conventional water purification cartridge, the raw water flowing into the cartridge from the raw water inlet becomes unevenly distributed in the circumferential direction in the cartridge and is concentrated on the extension of the raw water inlet. As the raw water flows, the flow rate of the raw water decreases at the position distant from the raw water inlet in the circumferential direction. Therefore, activated carbon and hollow fibers will be locally concentrated and used on the extension of the raw water inlet, and the life will be shortened. This becomes significant only when the water pressure of the supplied raw water is high.

The present invention has been made in view of the above problems, and allows raw water to be evenly supplied in the circumferential direction in a cartridge, whereby a filter material such as activated carbon or hollow fibers is filtered. It is an object of the present invention to provide a water purification cartridge that can be effectively used in all of them.

[0009]

[Means for Solving the Problems]

 According to a first aspect of the invention, a first filter material is arranged in a case having an opening at one end, and a plurality of inflow ports are formed on an outer peripheral surface of the case, and the inflow ports are formed. A second filter material is arranged on the outer peripheral surface of the case, and the case is housed in an outer cylinder whose one end is open and the other end is closed. A gap between the inner surface of the outer cylinder and the inner peripheral surface serves as a raw water passage, and the raw water introduced from the opening at one end of the outer cylinder permeates the second filter material on the outer peripheral surface of the case, The first filtering material in the case is permeated, discharged from an opening at one end of the case, and a connection adapter is attached so as to close the opening at one end of the outer cylinder, and the second filtering material is attached. And a purified water outlet for discharging purified water that has passed through the first filtration material is the connection adapter. Is formed in the substantially central portion of the water, a plurality of raw water passage holes are formed around the purified water outlet, and an abutting portion against which raw water collides is formed at the raw water supply position of the connection adapter. The present invention relates to a water purification cartridge characterized in that the raw water passage hole is provided along a circumferential direction at a position excluding the abutting portion.

According to a second aspect of the invention, hollow fibers are arranged in a U-shaped bent state in a case having an opening at one end, and the open ends of both ends of the hollow fiber face the opening of the case. The case is fixed by an encapsulating material, one end of the case is closed by the encapsulating material, and the case is housed in an outer cylinder whose one end is open and the other end is closed. The gap between the outer cylinder and the inner peripheral surface is a raw water passage, and the activated carbon fiber layer is provided on the outer peripheral surface of the case. Through the activated carbon fiber layer and the raw water introduced into the case through the inflow port is introduced into the case through the activated carbon fiber layer and flows through the wall surface of the hollow fiber. To penetrate into the hollow fibers The hollow fiber is discharged through the open ends at both ends, and a connecting adapter is attached so as to close the opening at one end of the outer cylinder, and passes through the active carbon fiber layer and the wall surface of the hollow fiber. A purified water outlet for discharging the filtered purified water is formed substantially in the center of the connecting adapter, and a plurality of raw water passage holes are formed in the circumferential direction around the purified water outlet, An abutting portion with which the raw water collides is formed at the raw water supply position of the adapter, and the raw water passage hole is provided along the circumferential direction at a position excluding the abutting portion. The present invention relates to a cartridge.

[0011]

[Action]

 According to the first invention, the raw water is supplied from the raw water supply position of the connecting adapter, and at this time, the raw water comes into contact with the abutting portion provided on the adapter, and the momentum is weakened. Then, after this, it enters the outer cylinder through a plurality of raw water passage holes provided around the purified water discharge port, passes through the gap between the inner peripheral surface of the outer cylinder and the case, and enters the second outer surface of the case. Permeate through the filter material, and further through the first filter material in the case, and are discharged through the opening at one end of the case and the purified water discharge port of the connection adapter.

According to the second aspect, the raw water collides with the abutting portion of the raw water adapter, and then enters the outer cylinder through the raw water passage holes provided around the purified water discharge port, and the inner peripheral surface of the outer cylinder. The activated carbon fiber layer on the outer peripheral surface of the case penetrates through the gap between the case and the case, enters the case through the inflow port formed on the outer peripheral surface of the case, and the hollow fiber in the case is introduced. After passing through the wall surface of the hollow fiber, it is discharged through the openings at both ends of the hollow fiber and discharged from the opening at one end sealed by the resin of the case, and then discharged through the purified water discharge port formed in the central portion of the connection adapter.

[0013]

【Example】

 1 to 4 show a water purifier using a water purification cartridge according to an embodiment of the present invention, and this water purifier includes a frame 10 having a valve chamber. An adapter ring 12 having a connection port 11 is provided at the connection portion of the frame 10 that is connected to the tap for water. The adapter ring 12 is adapted to be tightened by a holding nut 13 as shown in FIG.

A packing 14 is arranged inside the presser nut 13, and the packing 14 is crimped to the tip of the tap of the water supply. A rotary valve 15 is arranged inside the packing 14. The rotary valve 15 includes a support shaft 16 as shown in FIG. 1, and a switching knob 17 is attached to the tip of the support shaft 16.

A discharge port 20 is provided on the outer peripheral side of the rotary valve 15, and a lower passage 21 is formed vertically below the rotary valve 15. The raw water discharge port 22 is provided at the outlet side of the lower passage 21. A shower connection passage 28 is provided on the outer peripheral side of the lower passage 21, and a shower hole 29 is formed in the lower portion of the shower connection passage 28.

The housing of the rotary valve 15 is connected to the discharge pipe 23 shown in FIG. The tip end side of the discharge pipe 23 is connected to the raw water passage 24. The raw water passage 24 is communicated with the annular passage 25, and the annular passage 25 is communicated with the passage hole 26. Further, the passage hole 26 is connected to a connection passage 27 for connecting with the cartridge 30.

The cartridge 30 detachably attached to the upper portion of the frame 10 in FIG. 1 is provided with an outer cylinder 31 whose front end is closed. The case 32 is housed in the outer cylinder 31.

As shown in FIGS. 5 and 6, the case 32 has flanges 33 and 34 at both ends thereof, and an activated carbon fiber layer 35 and a nonwoven fabric 36 are alternately wound around the outer peripheral side of the case 32. (See FIG. 6). The activated carbon fiber layer 35 is composed of felt of activated carbon fiber, and the activated carbon fibers constituting such felt are polyacrylonitrile-based, cellulose-based, pitch-based or phenol-based fibers. It is obtained by activating the raw material by a conventional method. Such activated carbon fibers are effective in adsorbing and removing organic substances and bactericide components in the raw water, and have a function of adsorbing and removing chlorine and water-bloom in the raw water.

A slit-like inlet 40 is formed on the outer peripheral portion of the case 32 of the cartridge 30 as shown in FIGS. 5 and 7. As shown in FIGS. 5 and 7, innumerable hollow fibers 41 are housed in the case 32 in a state of being bent in a U shape, and the ends of these hollow fibers 41 are located in the openings of the case 32. The opening is formed so as to face the portion and is fixed by the encapsulating resin 42. The hollow fiber 41 has an infinite number of fine pores of 0.01 to 0.1 μm formed on its wall surface to remove turbidity components and bacteria in the raw water.

As such a hollow fiber, a fiber material made of a polymer such as cellulose-based, polyolefin-based, polysulfone-based, or polyvinyl alcohol-based polymer may be used.

Moreover, the opening at one end of the case 32 is closed by the sealing resin 42. An O-ring 43 is attached to the outer peripheral side of one end of the case 32 sealed with the resin 42, and the O-ring 43 is used to seal the connection (see FIG. 1).

A purified water discharge passage 44 is provided at the center of the portion of the cartridge 30 that houses the case 32 on the open end side, as shown in FIG. Such a passage 44 is connected to the purified water discharge pipe 45 when the cartridge 30 is connected to the frame 10 as shown in FIG. A float 46 is housed on the tip side of the purified water discharge pipe 45, and is pressed upward in FIG. 1 by a spring 47. The front end side of the purified water discharge pipe 45 including the float 46 is bent into an L shape as shown in FIG. 3 and constitutes a purified water discharge port 48.

Next, the operation of the water purifier having the above configuration will be described. By connecting the connection port 11 of the frame 10 to the water faucet by the adapter ring 12 and the holding nut 13, the water purifier can be attached to the water faucet. When the switching knob 17 is rotated to the upper position in FIG. 4 in such a state, the raw water from the faucet of the water passage passes through the opening 18, the discharge port 20 and the lower passage 21 of the rotary valve 15 and the raw water discharge port 22. Will be directly discharged from. Therefore, in this case, the tap water is not purified at all and is taken out from the raw water discharge port 22 of the frame 10 as it is.

Next, when the switching knob 17 is rotated to the diagonal position shown by the solid line in FIG. 4, the discharge port 20 of the rotary valve 15 is connected to the shower connection passage 28 outside the lower passage 21. Therefore, the tap water that has entered from the upper portion is discharged downward from the shower hole 29 of this shower unit through the opening 18, the discharge port 20 and the shower connection passage 28 of the rotary valve 15. That is, in this case, the tap water is not purified but is discharged like a shower by the shower unit.

Next, when the switching knob 17 is switched to the horizontal position shown by the chain line in FIG. 4, the opening 18 of the rotary valve 15 is connected to the discharge pipe 23 shown in FIG. Therefore, as shown by the arrow in FIG. 1, the raw water from the tap of the tap water has the outlet 20, the exhaust pipe 23, the raw water passage 24, the annular passage 25, the passage hole 26, and the connection passage 27 of the rotary valve 15. Through the cartridge 30 shown in FIG. 7 and is introduced into a gap between the cartridge 30 and the case 32. After this, the raw water passes through the activated carbon fiber layer 35 wound around the outer peripheral surface of the case 32 in the thickness direction thereof, and is introduced into the case through the inflow port 40 of the case 32.

Since the hollow fibers 41 are arranged in a U-shaped bent state inside the case 32, the raw water introduced into the case 32 passes through the wall surface of the hollow fibers 41 and the inside of the hollow fibers 41 Break into. Then, it is discharged through the openings at both ends of the hollow fiber, which are fixed by the encapsulating resin 42, and is thereby purified.

The purified water thus obtained is discharged through the purified water discharge passage 44, the purified water discharge pipe 45, and the purified water discharge port 48. That is, the purified water purified in the cartridge 30 of this water purifier is obtained through the purified water discharge port 48. Then, the flow rate at this time is visually detected from the position of the float 46 moved against the spring 47.

In the cartridge 30 of the water purifier for purifying tap water in this manner, the connecting adapter 60 is attached to the open end side of the outer cylinder 31 thereof as shown in FIG. At the center of the connection adapter 60, a cylindrical purified water discharge passage 44 having a purified water discharge port 61 at its tip is provided.

As shown in FIGS. 7 and 8, the connecting adapter 60 has a plurality of, for example, six raw water passage holes 26 formed in the outer peripheral portion of the purified water outlet 61 on the center side thereof. . The six raw water passage holes 26 have substantially the same size and are arranged side by side in the circumferential direction of the adapter 60.

Further, the raw water passage hole 26 is not formed at the raw water supply position of the adapter 60, and the portion is constituted by the abutting portion 62. That is, the supplied raw water comes into contact with the abutting portion 62, the momentum thereof is weakened, and the raw water is allowed to flow along the annular passage 25 of the adapter 60.

Therefore, according to the cartridge 30 having such a connection adapter 60, the raw water supplied through the raw water passage 24 abuts on the abutting portion 62 of the adapter 60, thereby weakening the force of the raw water. In this state, the fluid flows in the circumferential direction along the annular passage 25 of the adapter 60. The raw water flowing in the circumferential direction passes through any one of the plurality of passage holes 26 arranged along the circumferential direction and is formed on the inner circumferential side of the outer cylinder 31 and the outer circumferential surface of the case 32. Will be introduced in the gap between.

Therefore, the raw water flows in the cartridge 30 almost evenly in the circumferential direction, and the activated carbon fiber layer 35 wound around the outer circumference of the case 32 is effectively used in the entire circumferential region. It will be possible. Furthermore, the hollow fibers 41 in the case 32 can be uniformly used in the circumferential direction to perform filtration.

Next, a modified example of the above embodiment will be described with reference to FIGS. 9 and 10. The connection adapter 60 of the modified example is provided with an abutting portion 62 on the outer peripheral side of the purified water outlet 61 thereof. The abutting portion 62 is provided so as to face the position where the raw water is supplied through the raw water passage 24 shown in FIG. 1, and the raw water is caused to collide with the inclined surface 63 on the tip side thereof. A plurality of raw water passage holes 26 are formed in the adapter 60 along the outer peripheral side of the purified water discharge port 61. Moreover, the size of the raw water passage hole 26 increases as it goes away from the abutting portion 62, and the diameter thereof is set to the smallest value in the vicinity of the abutting portion 62.

By providing the connecting adapter 60 having such a structure, the raw water supplied through the raw water passage 24 shown in FIG. 1 collides with the inclined surface 63 of the abutting portion 62 of the adapter 60, and the force of the raw water is increased. Is stopped and is allowed to flow in the circumferential direction along the annular passage 25. The raw water flowing in the circumferential direction in this way passes through any of the plurality of through holes 26 arranged in the circumferential direction and is formed on the inner circumferential side of the outer cylinder 31 and the outer circumferential surface of the case 32. Is introduced in the gap between.

The raw water is abutted by the inclined surface 63 of the abutting portion 62, and the raw water is passed through the raw water passage holes 26 which are arranged in the circumferential direction and whose diameter increases as the distance from the abutting portion 62 increases. It becomes possible to make the distribution in the circumferential direction more uniform. That is, since the raw water collides with the abutting portion 62 in the raw water supply section where the raw water pressure is the highest, the force is weakened, and the size of the passage holes 26 distributed in the circumferential direction is smaller than the abutting portion 62. Such passage holes 26 allow a more uniform distribution of the pressure of the raw water in the circumferential direction, since it increases with distance.

In this embodiment, the size of the passage hole 26 is changed, and the impingement portion having the inclined surface 63 is made to collide with the raw water so as to weaken its momentum. However, the inclined surface 63 is not always required. Even if the size of the passage hole 26 is changed without providing it, the effect of making the distribution of the raw water in the circumferential direction more uniform is sufficient. Although the inclined surface 63 is locally provided on the abutting portion 62, the inclined surface 63 may be provided on a plane in a direction away from the abutting portion 62.

Therefore, the raw water flows evenly in the circumferential direction between the case 32 and the outer cylinder 31. Therefore, with such a structure, the activated carbon fiber layer 35 wound around the outer periphery of the case 32 can be effectively used in the entire region in the circumferential direction thereof, and the hollow inside the case 32 can be further used. The fibers 41 can be uniformly used in the circumferential direction to perform the filtration.

The present invention has been described above with reference to the illustrated embodiment, but the present invention is not limited to the above embodiment, and various modifications can be made based on the technical idea of the present invention. For example, in the above embodiment, the activated carbon fiber layer 35 is arranged on the outer peripheral surface of the case 32, and the hollow fibers 41 are filled in the case 32. The filter material to be filled can be variously combined, and is not necessarily limited to the combination of the above-mentioned embodiments.

[0039]

[Effect of device]

 According to a first aspect of the invention, a first filter material is arranged in a case having an opening at one end, and a plurality of inlets are formed on the outer peripheral surface of the case, and the inlets are formed. A second filter material is arranged on the outer peripheral surface of the case, and the case is housed in an outer cylinder whose one end is open and the other end is closed. The gap with the peripheral surface is used as a raw water passage, and the raw water introduced from the opening at one end of the outer cylinder permeates through the second filtration material on the outer peripheral surface of the case and then the first water inside the case. After passing through the filter material, it is discharged from the opening at one end of the case, and the connection adapter is attached so as to close the opening at one end of the outer cylinder, and then passes through the second filter material and the first filter material. A purified water outlet for discharging purified water is formed in the approximate center of the connection adapter, and around the purified water outlet. A plurality of raw water passage holes are formed, and at the raw water supply position of the connection adapter, there is formed an abutting portion where the raw water collides, and at the position excluding the abutting portion, the raw water passage hole is formed along the circumferential direction. Is provided.

Therefore, according to such a configuration, the raw water collides with the abutting portion formed at the raw water supply position of the connection adapter, and the pressure of the raw water weakens. Then, the raw water is supplied evenly in the circumferential direction of the case, whereby the second filter material on the outer peripheral side of the case and the first filter material inside the case are evenly used in the circumferential direction. It becomes possible to perform filtration, and it becomes possible to filter raw water uniformly.

In a second invention, hollow fibers are arranged in a U-shaped bent state in a case having one end open, and both ends of the hollow fiber face the opening of the case. The case is fixed by the encapsulating material, one end of the case is closed by the encapsulating material, and the case is housed in an outer cylinder whose one end is open and the other end is closed. The gap between the inner peripheral surface of the cylinder and the inner surface is used as a raw water passage, the activated carbon fiber layer is provided on the outer peripheral surface of the case, and the raw water flows through the activated carbon fiber layer in the thickness direction. A plurality of inlets are formed on the outer peripheral surface of the case, and the raw water that passes through the activated carbon fiber layer and is introduced into the case through the inlets passes through the wall surface of the hollow fiber and enters the hollow fiber. Allow the fibers to be discharged through the open ends at both ends, and The connection adapter is installed so as to close the opening at one end of the connection, and the purified water outlet that discharges the filtered water that has passed through the wall of the activated carbon fiber layer and the hollow fiber is almost at the center of the connection adapter. Along with the formation of the purified water outlet, a plurality of raw water passage holes are formed in the circumferential direction around the purified water outlet, and at the raw water supply position of the connection adapter, there is formed an abutting portion for the raw water to collide with. Raw water passage holes are provided along the circumferential direction at positions other than the above.

Therefore, according to such a configuration, particularly, the abutting portion formed at the raw water supply position of the connection adapter and the raw water passage provided along the circumferential direction at a position excluding the abutting portion. The holes allow the raw water to be evenly distributed in the circumferential direction of the case, which allows the activated carbon fiber layer and hollow fibers to be evenly used in the circumferential direction for filtration. It becomes possible to obtain purified water by filtering more uniformly.

[Submission date] March 25, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

Next, when the switching knob 17 is switched to the horizontal position shown by the chain line in FIG. 4, the opening 18 of the rotary valve 15 is connected to the discharge pipe 23 shown in FIG. Therefore, the raw water from the tap is shown in FIG. 1 by the arrow, the opening 18 of the rotary valve 15, the discharge pipe 23, the raw water passage 24, the annular passage 25, the passage hole 26, and the connection passage 27. Through the cartridge 30 shown in FIG. 7 and is introduced into a gap between the cartridge 30 and the case 32. After this, the raw water passes through the activated carbon fiber layer 35 wound around the outer peripheral surface of the case 32 in the thickness direction thereof, and is introduced into the case through the inflow port 40 of the case 32.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction content]

In this embodiment, the size of the passage hole 26 is changed, and the impingement portion having the inclined surface 63 is made to collide with the raw water so as to weaken its momentum. However, the inclined surface 63 is not always required. Even if the size of the passage hole 26 is changed without providing it, the effect of making the distribution of the raw water in the circumferential direction more uniform is sufficient. Although the inclined surface 63 is locally provided on the abutting portion 62, the inclined surface 63 may be provided in a planar shape in a direction away from the abutting portion 62.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the overall structure of a water purifier.

FIG. 2 is a vertical sectional view showing the overall structure of the water purifier.

FIG. 3 is a vertical sectional view showing a portion of a water purifier discharge port.

FIG. 4 is a side view showing the appearance of the case.

FIG. 5 is a sectional view of a cartridge.

FIG. 6 is an external perspective view of a case in which activated carbon fiber layers and non-woven fabric are alternately wound.

FIG. 7 is a vertical cross-sectional view of a cartridge.

FIG. 8 is a front view of the cartridge.

FIG. 9 is a vertical cross-sectional view of a modified cartridge.

FIG. 10 is a front view of the cartridge.

[Explanation of symbols]

 10 Frame 11 Connection Port 12 Adapter Ring 13 Holding Nut 14 Packing 15 Rotary Valve 16 Spindle 17 Switching Knob 18 Opening 20 Discharge Port 21 Lower Passage 22 Raw Water Discharge Port 23 Discharge Pipe 24 Raw Water Passage 25 Annular Passage 26 Passage Hole 27 Connection Passage 28 Shower Connection Passage 29 Shower Hole 30 Cartridge 31 Outer Cylinder 32 Case 33, 34 Flange 35 Activated Carbon Fiber Layer 36 Nonwoven Fabric 40 Inlet 41 Hollow Fiber 42 Encapsulating Resin 43 O-ring 44 Clean Water Discharge Passage 45 Clean Water Discharge Pipe 46 Float 47 Spring 48 Purified water outlet 60 Connection adapter 61 Purified water outlet 62 Abutting portion 63 Sloping surface

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 25, 1994

[Procedure 3]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Toyohiko Takatsuki, Inventor, 1-20-5 Tenma, Kita-ku, Osaka City, Osaka Prefecture Mahobin Co., Ltd. (72) Masahiro Yoshida 1-20, Tenma, Kita-ku, Osaka, Osaka Prefecture No. 5 inside Zojirushi Mahobin Co.

Claims (2)

[Scope of utility model registration request] 1. A first case in a case having an opening at one end.
And a plurality of inlets are formed on the outer peripheral surface of the case, and a second filter is formed on the outer peripheral surface of the case in which the inlets are formed.
The case is housed in an outer cylinder having one end opened and the other end closed, and a gap between the outer peripheral surface of the case and the inner peripheral surface of the outer cylinder. Is a raw water passage, and the raw water introduced from the opening at one end of the outer cylinder permeates the second filtration material on the outer peripheral surface of the case, and further the first filtration material in the case. Water that has permeated and discharged from an opening at one end of the case, has a connection adapter attached so as to close the opening at one end of the outer cylinder, and has passed through the second filtration material and the first filtration material. A purified water outlet for discharging water is formed in the substantially central part of the connection adapter, and a plurality of raw water passage holes are formed around the purified water outlet, and the raw water supply position of the connection adapter is the raw water supply position. The abutting part that collides with is formed, and the abutting part is excluded A water purification cartridge characterized in that the raw water passage holes are provided at different positions along the circumferential direction. 2. An encapsulating material in which a hollow fiber is arranged in a U-shaped bent state in a case having an opening at one end, and open ends of both ends of the hollow fiber face the opening of the case. And the case is closed at one end by the encapsulant, the case is housed in an outer cylinder having one end opened and the other end closed, and the case is on the outer peripheral side of the case. The gap between the inner peripheral surface of the cylinder is a raw water passage, an activated carbon fiber layer is provided on the outer peripheral surface of the case,
Raw water flows through the activated carbon fiber layer so as to permeate through the activated carbon fiber layer, and a plurality of inlets are formed on the outer peripheral surface of the case. The raw water permeates the activated carbon fiber layer and passes through the inlet to the inside of the case. The raw water introduced into the hollow fiber passes through the wall surface of the hollow fiber to enter the hollow fiber, is discharged through the open ends of the hollow fiber, and closes the opening at one end of the outer cylinder. A connection adapter is attached, and a purified water outlet for discharging purified water that has passed through the activated carbon fiber layer and the wall surface of the hollow fiber is formed in substantially the center of the connection adapter, and A plurality of raw water passage holes are formed in the circumferential direction around the purified water discharge port, and at the raw water supply position of the connection adapter, there is formed an abutting part against which the raw water collides and a position excluding the abutting part. In the circumferential direction Water purification cartridge, characterized in that as providing the raw water passing hole I.