JP2016172225A - Water purifier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water purifier capable of reducing pressure loss which is generated by passing through a filter material packed part.SOLUTION: In the case where a water purifier is constituted such that raw water W is filtered while flowing through a filter material packed part 65 in a radial direction, the length of the filter material packed part 65 from one end side to the other end side in an axial direction X is formed longer than the length between a side surface on an outer peripheral side and a side surface on an inner peripheral side of the filter material packed part 65 in the radial direction, and a flow rate of the raw water W passing through the filter material packed part 65 is a constant flow rate, areas of the side surface of the outer peripheral side, the side surface of the inner peripheral side, an end surface of one end side in the axial direction X, and an end surface of the other end side are set such that linear speed of the raw water W when it passes between the side surface on the outer peripheral side and the side surface on the inner peripheral side of the filter material packed part 65 in a radial direction becomes smaller than linear speed of the raw water W assuming that the water passes between the end surface on one end side and the end surface on the other end side in the axial direction X of the filter material packed part 65 in the axial direction X.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water purifier provided with an outer case having an inflow port through which raw water flows in and an outflow port through which purified water flows out, and a filter medium filling unit filled with a filter medium in the outer case.

  As a conventional example of such a water purifier, a cylindrical shape formed such that the length from one end side to the other end side in the axial direction is longer than the length between the outer peripheral side surface and the inner peripheral side surface in the radial direction. The filter medium filling part is provided, and the raw water flowing in from the inlet of the outer case is passed through in the axial direction of the filter medium filling part and filtered, and the purified water after filtration flows out from the outlet of the outer case. (See, for example, Patent Document 1).

JP 2003-340445 A

  Like the water purifier of the said patent document 1, the pressure loss which generate | occur | produces in the water purifier provided with the filter medium filling part with which the filter medium was filled is a filter medium cutting | disconnection orthogonal to the water flow direction of raw water in the filter medium filling part. It increases in proportion to the linear velocity divided by the area and the filtration length of the raw water passing through the filter medium.

  And, when the raw water is filtered through the axial direction of the filter medium filling part as in the water purifier of Patent Document 1, the raw water is filtered in the radial direction of the filter medium filling part compared to the case where the raw water is filtered. In addition to increasing the filtration length, the filter medium cross-sectional area perpendicular to the water flow direction through which raw water flows is reduced, so the linear velocity divided by the flow rate of raw water divided by the filter medium cross-sectional area orthogonal to the water flow direction increases. To do. Therefore, in the water purifier of the said patent document 1, there existed a problem that the pressure loss generate | occur | produced when passing raw | natural water through a filter material filling part becomes comparatively large.

  This invention is made paying attention to this point, and the objective is to provide the water purifier which can reduce the pressure loss which generate | occur | produces by the water flow to a filter-medium filling part.

The water purifier according to the present invention for achieving this object is as follows:
A water purifier provided with an outer case having an inlet into which raw water flows in and an outlet through which purified water flows out, and a filter medium filling portion filled with a filter medium inside the outer case,
The filter medium filling part is formed in a hollow cylindrical shape,
An outer filter disposed along the circumferential direction of the outer peripheral side surface of the filter medium filling portion and an inner filter disposed along the circumferential direction of the inner circumferential side surface of the filter medium filling portion;
A state of extending in the axial direction between the collecting flow path provided in a state of extending in the axial direction of the filter medium filling portion on the inner peripheral side of the inner filter, and the outer peripheral side of the outer filter and the inner peripheral side of the outer case And an outer peripheral flow path provided in
The raw water is guided from the inflow port to one of the collective flow path and the outer peripheral flow path, and filtered by passing the filter material filling portion in the radial direction between the outer peripheral flow path and the collective flow path. And the filtered purified water is configured to be guided to the outlet by the other of the collecting channel and the outer peripheral channel,
The length from the one end side in the axial direction to the other end side of the filter medium filling portion is formed longer than the length between the outer peripheral side surface and the inner peripheral side surface in the radial direction of the filter medium filling portion, In addition, when the flow rate of the raw water flowing through the filter medium filling portion is set to a constant flow rate, the raw water is passed in a radial direction between the outer peripheral side surface and the inner peripheral side surface of the filter medium filling portion. When the linear velocity in the case of assuming that the raw water passes in the axial direction between the end surface on the one end side in the axial direction and the end surface on the other end side in the axial direction of the filter medium filling portion The area of the outer peripheral side surface, the inner peripheral side surface, the end surface on the one end side, and the end surface on the other end side is set so as to be smaller than the linear velocity.

  According to the above characteristic configuration, the length from the one end side in the axial direction of the filter medium filling portion to the other end side is longer than the length between the outer peripheral side surface and the inner peripheral side surface in the radial direction of the filter medium filling portion. In this state, since the raw water is filtered in the radial direction of the filter medium filling portion, the filtration length is shorter than the filtration length when the raw water passes through the filter medium filling portion in the axial direction.

  Further, according to the above characteristic configuration, when the flow rate of the raw water passing through the filter medium filling unit is a constant flow rate, the raw water passes radially between the outer peripheral side surface and the inner peripheral side surface of the filter medium filler unit. The linear velocity in the case of water is smaller than the linear velocity in the case where it is assumed that raw water passes in the axial direction between the end surface on one end side in the axial direction and the end surface on the other end side in the axial direction. Thus, the area of the outer peripheral side surface, the inner peripheral side surface, the end surface on one end side, and the end surface on the other end side of the filter medium filling portion is set. That is, the raw water is filtered so that the linear velocity when the raw water flows in the radial direction through the filter medium filling portion is smaller than the linear velocity when the raw water is assumed to flow through the filter medium filling portion in the axial direction. The cross-sectional area of the filter medium perpendicular to the water flow direction when water is passed in the radial direction and the cross-sectional area of the filter medium perpendicular to the water flow direction when raw water passes through the filter medium filling part in the axial direction are set. It becomes.

  Therefore, the filtration length of the raw water passing through the filter medium filling part in the radial direction is shorter than the filtration length when the filter medium filling part is passed through in the axial direction, and the raw water passes through the filter medium filling part in the radial direction. Since the linear velocity when water is smaller than the linear velocity when the filter medium filling part is passed in the axial direction, the raw water has a pressure loss caused by passing the filter medium filling part in the radial direction. It can reduce more than the pressure loss which generate | occur | produces when passing water to the axial direction of a filter-medium filling part.

  When raw water passes through the filter medium filling part in the radial direction, the filtration length becomes shorter than when raw water passes through the filter medium filling part in the axial direction, but the flow rate of raw water flowing through the filter medium filling part is constant. In the case where the flow rate is the same, when the filter medium having the same volume is filled in the filter medium filling portion, the purification performance for purifying the raw water is equivalent. Therefore, compared with the case where raw | natural water passes a filter material filling part to an axial direction, the pressure loss generate | occur | produced by passing water to a filter material filling part can be reduced, without reducing filtration performance.

Further features of the water purifier according to the present invention are as follows:
The inflow port or the outflow port is provided on one end side of the outer case in the axial direction;
An outer filter support that supports the outer filter is provided along the entire circumference of the outer circumferential surface of the outer filter on the other end side in the axial direction of the outer filter,
An outer seal member is provided between the outer filter support and the outer case for sealing the outer peripheral flow path along the entire circumference in the circumferential direction of the outer filter support on the other end side in the axial direction. There is in point.

  According to the above characteristic configuration, since the outer seal member is provided on the other end side of the outer peripheral flow path, it is possible to form the outer peripheral flow path in a wide range extending from one end side to the other end side in the axial direction of the filter medium filling portion. it can. Moreover, since raw | natural water or purified water is prevented from flowing in the other end side of an outer periphery flow path, it can prevent that raw | natural water or purified water leaks from an outer periphery flow path in the other end side of an outer periphery flow path.

  Furthermore, since the outer seal member is provided between the outer filter support and the outer case along the entire circumference of the outer filter support, the outer filter support is attached to the outer case by the outer seal member. The peripheral flow path can be easily formed between the outer filter support and the outer case.

Further features of the water purifier according to the present invention are as follows:
On the inner peripheral side of the inner filter, an inner tube forming a tube flow path provided with a hollow fiber membrane is provided in a state extending in the axial direction,
The collecting channel is formed between the inner filter and the inner tube;
One end side of the in-pipe flow path communicates with the inflow port or the outflow port provided on one end side in the axial direction of the outer case, and the other end side of the in-pipe flow path is the other end in the axial direction of the outer case. Configured to communicate with the collecting channel on the side,
An inner filter support that supports the inner filter is provided along the entire circumference of the inner circumferential surface of the inner filter on one end side in the axial direction of the inner filter;
An inner seal member that seals the collecting channel along the entire circumference in the circumferential direction of the inner tube at one end in the axial direction is provided between the inner filter support and the inner tube. is there.

  According to the above characteristic configuration, the purified water or the collective flow channel that flows out from the filter medium filling portion to the collective flow channel by the hollow fiber membrane as a state in which the hollow fiber membrane is accommodated in the pipe flow channel that extends from one end side to the other end side of the outer case. Appropriately remove bacteria and fine particles contained in the raw water or purified water in a state where the raw water or purified water flows smoothly inside the outer case without obstructing the flow of the raw water flowing into the filter medium filling part can do.

  And in the case of providing the inner tube provided with the hollow fiber membrane in this way, since the inner seal member is provided on one end side of the collecting flow path, it extends from the other end side in the axial direction of the filter medium filling portion to one end side. The collecting channel can be formed in a wide range. Further, since raw water or purified water is prevented from flowing through one end side of the collective flow path, it is possible to prevent raw water or purified water from leaking from the collective flow path at one end side of the collective flow path.

  Furthermore, since the inner seal member is provided between the inner filter support and the inner tube along the entire circumference of the inner tube, the inner tube is positioned with respect to the inner filter support by the inner seal member. It is possible to easily form a collecting flow path between the inner filter support and the inner tube.

Further features of the water purifier according to the present invention are as follows:
The raw water passes through the filter medium filling portion in a radially inward direction from the outer peripheral flow path to the collecting flow path.

  According to the above-described characteristic configuration, the water flow direction is directed to the axial center (inward radial direction) of the filter medium filling part, so that the stability of the structure of the filter medium filling part is improved, and the filter medium filling part is deformed to cause water leakage or the like. The possibility of occurring can be reduced.

Further features of the water purifier according to the present invention are as follows:
The raw water is in the point of passing the filter medium filling portion in the radially outward direction from the collecting channel to the outer peripheral channel.

  According to the said characteristic structure, raw | natural water can be filtered in the state which the raw | natural water permeate | transmits a filter material filling part to the radial direction which goes to an outer peripheral flow path from a collection flow path.

The water purifier according to the present invention for achieving this object is as follows:
An outer case having a water storage tank for storing purified water and an outlet through which the stored purified water flows out, a raw water tank for storing raw water stored in the outer case, and a filter medium filled with a filter medium inside the outer case Is a water purifier provided with
The filter medium filling part is formed in a hollow cylindrical shape,
An outer filter disposed on an outer peripheral side surface of the filter medium filling portion and an inner filter disposed on an inner peripheral side surface of the filter medium filling portion;
A collecting channel provided in a state extending in the axial direction of the filter medium filling portion on the inner peripheral side of the inner filter;
The raw water is guided from the raw water tank to the collecting flow path, filtered through the filter medium filling portion from the collecting flow path toward the outer filter, and the filtered purified water is filtered by the outer filter. It is configured to be led to the water storage tank through the outer peripheral side,
The length from the one end side in the axial direction to the other end side of the filter medium filling portion is formed longer than the length between the outer peripheral side surface and the inner peripheral side surface in the radial direction of the filter medium filling portion, In addition, when the flow rate of the raw water flowing through the filter medium filling portion is set to a constant flow rate, the raw water is passed in a radial direction between the outer peripheral side surface and the inner peripheral side surface of the filter medium filling portion. When the linear velocity in the case of assuming that the raw water passes in the axial direction between the end surface on the one end side in the axial direction and the end surface on the other end side in the axial direction of the filter medium filling portion The area of the outer peripheral side surface, the inner peripheral side surface, the end surface on the one end side, and the end surface on the other end side is set so as to be smaller than the linear velocity.

  According to the above characteristic configuration, the raw water passes through the filter medium filling section in addition to the filtration length through which the raw water passes through the filter medium filling section becomes shorter than the filtration length when the filter medium filling section passes in the axial direction. The linear velocity at the time of running is smaller than the linear velocity when passing the filter medium filling part in the axial direction, so that the pressure loss caused by the flow of raw water to the filter medium filling part is reduced by the raw water. It can be reduced as compared with the case of passing water in the direction. In addition, the raw water can be filtered in a state in which the raw water passes through the filter material filling portion in the radially outward direction from the collecting channel toward the outer filter.

The water purifier according to the present invention for achieving this object is as follows:
An outer case having a water storage tank for storing purified water and an outlet through which the stored purified water flows out, a raw water tank for storing raw water stored in the outer case, and a filter medium filled with a filter medium inside the outer case Is a water purifier provided with
The filter medium filling part is formed in a hollow cylindrical shape,
An outer filter disposed on an outer peripheral side surface of the filter medium filling portion and an inner filter disposed on an inner peripheral side surface of the filter medium filling portion;
A cylindrical intermediate member that is housed in the outer case and has an inflow portion from which the raw water flows from the raw water tank and an outflow portion from which the purified water flows out to the water storage tank is provided,
A state of extending in the axial direction between a collecting flow path provided in a state extending in the axial direction of the filter medium filling portion on an inner peripheral side of the inner filter, and an outer peripheral side of the outer filter and an inner peripheral side of the intermediate member And an intermediate flow path provided in
The raw water is guided from the raw water tank to the intermediate flow path, filtered through the filter medium filling portion in a radial direction from the intermediate flow path toward the collective flow path, and the filtered purified water is the collective flow. Configured to flow through a path and be led to the outflow part,
The length from the one end side in the axial direction to the other end side of the filter medium filling portion is formed longer than the length between the outer peripheral side surface and the inner peripheral side surface in the radial direction of the filter medium filling portion, In addition, when the flow rate of the raw water flowing through the filter medium filling portion is set to a constant flow rate, the raw water is passed in a radial direction between the outer peripheral side surface and the inner peripheral side surface of the filter medium filling portion. When the linear velocity in the case of assuming that the raw water passes in the axial direction between the end surface on the one end side in the axial direction and the end surface on the other end side in the axial direction of the filter medium filling portion The area of the outer peripheral side surface, the inner peripheral side surface, the end surface on the one end side, and the end surface on the other end side is set so as to be smaller than the linear velocity.

According to the above characteristic configuration, the raw water passes through the filter medium filling section in addition to the filtration length through which the raw water passes through the filter medium filling section becomes shorter than the filtration length when the filter medium filling section passes in the axial direction. The linear velocity at the time of running is smaller than the linear velocity when passing the filter medium filling part in the axial direction, so that the pressure loss caused by the flow of raw water to the filter medium filling part is reduced by the raw water. It can be reduced as compared with the case of passing water in the direction.
In addition, the water flow direction is directed to the axial center (inner diameter direction) of the filter medium filling part, so that the stability of the structure of the filter medium filling part is improved, and there is a possibility that the filter medium filling part is deformed and water leakage occurs. Can be reduced.

Further features of the water purifier according to the present invention are as follows:
The filter medium is activated carbon particles having a particle size of 48 to 300 mesh.

  According to the above characteristic configuration, since the filter medium is activated carbon particles, chlorine and the like contained in the raw water can be removed. Moreover, since the particle size of the activated carbon particles is 48 to 300 mesh, a gap through which the raw water flows appropriately is formed between the activated carbon particles filled in the filter material filling portion, and an increase in pressure loss during water flow is suppressed. can do.

The schematic sectional side view which shows the water purifier which makes the water flow direction which concerns on 1st Embodiment the inside diameter direction The schematic sectional side view which shows the water purifier which makes the water flow direction which concerns on 1st Embodiment the radial direction Schematic side sectional view showing a water purifier according to the second embodiment Schematic side sectional view showing a water purifier according to a third embodiment

[First Embodiment]
1st Embodiment of the water purifier which concerns on this invention is described based on drawing.
The water purifier shown in FIG. 1 is configured as a counter top type water purifier installed in a kitchen counter, and a water purifier main body 4 to which raw water W is supplied from a switching valve 2 connected to a faucet 1 through a water supply hose 3; And a purified water discharge pipe 8 that guides and discharges the purified water V filtered by the purified water cartridge 6 to the purified water discharge port 9.

  The water purification device main body 4 is constituted by a water purification cartridge 6 as a water purifier for filtering the raw water W and a main body casing member 41 for housing the water purification cartridge 6, and the water supply hose 3 is connected to a hose connection portion 41 a of the main body casing member 41. The purified water discharge pipe 8 is connected to the discharge pipe connecting portion 41b.

  The main body casing member 41 that accommodates the water purification cartridge 6 includes, for example, a main body casing lower part 41c and a main body casing upper part 41d, as shown in FIG. The main body casing upper part 41d is formed in a cylindrical shape, the upper end side thereof is closed, and a female screw is formed on the inner peripheral surface on the lower end side. The main body casing lower portion 41c is also formed in a cylindrical shape, and a male screw that engages with a female screw on the outer peripheral surface of the main body casing upper portion 41d is formed on the outer peripheral surface of the upper end portion. A disc-shaped mounting portion 41e extending in the radial direction is formed on the lower inner peripheral side. When the female screw of the main body casing upper portion 41d and the male screw of the main body casing lower portion 41c are screwed together and the main body casing upper portion 41d is attached to the main body casing lower portion 41c, the purified water cartridge accommodating space for accommodating the purified water cartridge 6 inside the main body casing member 41 Is formed.

  Therefore, when the water purification cartridge 6 is accommodated in the main body casing member 41, the water purification cartridge 6 is placed on the placement portion 41e of the main body casing lower portion 41c from the upper side of the main body casing lower portion 41c. By rotating the main body casing upper portion 41d in the circumferential direction in a state where the male screw formed on the outer peripheral surface on the upper end side is screwed with the female screw formed on the inner peripheral surface on the lower end side of the main body casing upper portion 41d. The water purification cartridge 6 can be accommodated in the main body casing member 41 in a state where the water purification cartridge 6 is pressed toward the main body casing lower portion 41c by the main body casing upper portion 41d. On the other hand, the water purification cartridge 6 accommodated in the main body casing member 41 can be removed by removing the main body casing upper portion 41d from the main body casing lower portion 41c.

  The switching valve 2 connected to the faucet 1 supplies the raw water W received from the faucet 1 to the water purifier main body 4 through the water supply hose 3 and swings the purified water V from the purified water discharge port 9 by the swinging operation of the switching lever 2a. A purified water discharge state for discharging purified water V, a raw water discharge state for discharging raw water W received from faucet 1 from a raw water discharge port (not shown), and a shower state for discharging raw water W received from faucet 1 from a shower port (not shown). It is configured to be switchable.

Next, the water purification cartridge 6 will be specifically described.
As shown in FIG. 1, the water purification cartridge 6 has a cylindrical outer case 61 having an inlet 60 through which raw water W flows in and an outlet 67 through which purified water V flows out, and a filter medium is filled inside the outer case 61. A hollow cylindrical filter medium filling portion 65 is provided. Further, the raw water W is configured to flow from the water supply hose 3 to the inlet 60 through the hose connection portion 41 a of the main body casing member 41, and from the outlet 67 to the purified water discharge pipe 8 through the discharge pipe connection portion 41 b of the main body casing member 41. It is comprised so that the purified water V may flow out.

  The inflow port 60 is provided on one end side in the axial direction X of the outer peripheral surface 61 b of the outer case 61, and the outflow port 67 is provided on the lower surface 61 c that forms one end side in the axial direction X of the outer case 61. . The axial direction X is the vertical direction in FIG. 1, and one side of the axial direction X is the lower side in FIG. 1, and the other side of the axial direction X is the upper side in FIG. Therefore, in the following description, for example, one end side in the axial direction X of the outer case 61 will be described as the lower end side of the outer case 61, and the other end side in the axial direction X of the outer case 61 will be described as the upper end side of the outer case 61. Sometimes.

  The filter medium filling part 65 is formed in a hollow cylindrical shape, and the length from the one end side to the other end side in the axial direction X of the filter medium filling part 65 is the outer peripheral side surface and the inner peripheral side surface of the filter medium filling part 65 in the radial direction. It is formed longer than the length between. The filter medium filled in the filter medium filling unit 65 is activated carbon particles having a particle size of 48 to 300 mesh. The activated carbon particles adsorb chlorine components and the like contained in the raw water W, thereby removing the odor of the raw water W. Is done.

When the flow rate of the raw water W flowing through the filter medium filling unit 65 is a constant flow rate, the filter medium filling unit 65 is configured such that the raw water W is radially between the outer peripheral side surface and the inner peripheral side surface of the filter medium filling unit 65. The linear velocity when water is passed is higher than the linear velocity when the raw water W is assumed to pass between the end surface on one end side in the axial direction X and the end surface on the other end side in the axial direction X of the filter medium filling portion 65. The areas of the outer peripheral side surface, the inner peripheral side surface, the end surface on one end side in the axial direction X, and the end surface on the other end side are set so as to decrease.
That is, the linear velocity when the raw water W flows through the filter medium filling portion 65 in the radial direction is smaller than the linear velocity when the raw water W is assumed to flow through the filter material filling portion 65 in the axial direction X. The cross-sectional area of the filter medium perpendicular to the water flow direction when the raw water W passes the filter medium filling part 65 in the radial direction and the water flow direction orthogonal to the raw water W when the filter medium filling part 65 passes the filter medium filling part 65 in the axial direction X. The filter medium cross-sectional area is set.

  In addition, an outer filter 64 is disposed on the entire circumference along the circumferential direction of the outer peripheral side surface of the filter medium filling unit 65, and the inner filter 63 is disposed on the entire circumference along the circumferential direction of the inner circumferential side surface of the filter medium filling unit 65. It is installed. The outer filter 64 and the inner filter 63 are made of a net, a nonwoven fabric, or the like that can pass water and can prevent the filter medium from flowing out of the filter medium filling part 65 due to water flow to the filter medium filling part 65. Is formed. Although not shown, an upper end side filter that connects the upper end sides of the outer filter 64 and the inner filter 63 and a lower end side filter that connects the lower end sides are also provided on the upper end side and the lower end side of the filter medium filling unit 65. A filter medium filling portion 65 filled with a filter medium is formed by the outer filter 64, the inner filter 63, the upper end filter, and the lower end filter.

  Further, on the inner peripheral side of the inner filter 63, a collecting flow path 69 provided in a state extending in the axial direction X of the filter medium filling portion 65 is provided. Specifically, the collecting flow path 69 is provided between the inner filter 63 and an inner pipe 70 described later. Further, an outer peripheral flow path 68 provided in a state extending in the axial direction X is provided between the outer peripheral side of the outer filter 64 and the inner peripheral side of the outer case 61.

  The water purification cartridge 6 is provided with an inner tube 70 extending in the axial direction X of the filter medium filling portion 65 on the inner peripheral side of the inner filter 63. In the in-pipe flow path 72 formed inside the inner pipe 70, the hollow fiber membrane 71 is provided in a state bent in a U shape. Therefore, the purified water V that has passed through the filter medium filling portion 65 and has flowed into the pipe flow path 72 is configured to pass through the hollow fiber membrane 71. The hollow fiber membrane 71 separates bacteria and turbidity components contained in the purified water V.

  And it is comprised so that the purified water V which passed the hollow fiber membrane 71 may flow out from the outflow port 67 provided in the lower end side in the axial direction X of the outer case 61. FIG. On the other hand, a gap P is formed between the other end side opening 70b on the upper end side of the inner pipe 70 and the upper surface 61d on the upper end side of the outer case 61, and the filter medium is filled from the collective flow path 69 to the pipe inner flow path 72. The purified water V that has passed through the portion 65 is configured to flow freely. That is, the in-pipe flow path 72 is configured to communicate with the collective flow path 69 on the upper end side in the axial direction X of the outer case 61.

  On the other hand, a connecting pipe portion 70 a having a larger diameter than the inner tube 70 is connected to the lower end side of the inner tube 70 so as to communicate with the inner tube 70. The purified water V that has passed through the hollow fiber membrane 71 flows out to the inner peripheral side of the connecting pipe portion 70a. The connecting pipe portion 70a is inserted and connected to the inside of a cylindrical annular convex portion 61a formed so as to protrude inside the outer case 61 around the outflow port 67 of the lower surface 61c of the outer case 61. Yes. Further, an O-ring 73 is provided between the inner peripheral side of the annular convex portion 61a and the outer peripheral side of the connecting pipe portion 70a. Thus, the purified water V that has passed through the hollow fiber membrane 71 flows between the annular convex portion 61a and the connecting pipe portion 70a and returns to the outer peripheral flow path 68, and the raw water W flowing through the outer peripheral flow path 68 is annular convex. It is possible to prevent leakage between the portion 61 a and the connecting pipe portion 70 a and leaking to the outlet 67.

  A lattice-like outer filter support 62 a that supports the outer filter 64 is provided along the entire circumference of the outer circumferential surface of the outer filter 64 from the lower end side to the upper end side in the axial direction X of the outer filter 64. Yes. The outer filter support 62a is provided with an outer filter support opening 66a for water flow.

  Specifically, the upper end portion of the outer filter support 62a includes a filter support upper end surface 62c formed in an annular shape toward the inner peripheral side of the outer filter support 62a, and the filter support upper end surface 62c. Is connected to the upper end of the inner filter support 62b. The lower ends of the outer filter support 62a and the inner filter support 62b are connected to the annular filter support lower component 62d, respectively. The outer filter support 62a, the inner filter support 62b, and the filter support A filter support case 62 that accommodates the filter medium filling portion 65 is formed by the lower component member 62d.

  Then, on the other end side in the axial direction X of the outer filter support 62a, an outer seal member 80 that seals the outer peripheral flow path 68 along the entire circumference of the outer filter support 62a is provided on the outer filter support 62a. It is provided between the outer peripheral surface and the inner peripheral surface of the outer case 61. This outer seal member 80 functions as the upper end portion of the outer peripheral flow path 68. On the other hand, a lower end portion of the outer peripheral flow path 68 is formed by the lower surface 61 c of the outer case 61. Therefore, the outer peripheral flow path 68 is formed from the other end side in the axial direction X of the outer filter support body 62a to one end side in the entire circumference in the circumferential direction on the outer peripheral side of the outer filter support body 62a.

  Specifically, the outer seal member 80 is composed of an O-ring, and is attached to an outer seal attachment portion 62e formed along the entire circumference in the circumferential direction on the upper end side of the outer filter support 62a. Thus, by attaching the outer filter support 62 a to the inside of the outer case 61, the outer seal member 80 contacts the inner peripheral surface on the upper end side of the outer case 61 and the upper end portion of the outer peripheral flow path 68 is sealed.

In this case, the outer seal mounting portion 62e is formed along the entire circumference in the circumferential direction on the upper end side of the outer filter support 62a. The filter support opening 66a cannot be provided. Therefore, on the upper end side of the outer filter support 62a, the raw water W does not flow into the filter medium forming part from the outer peripheral flow path 68. In this case, from the area of the outer peripheral side surface extending from one end side to the other end side of the filter medium filling portion 65, the outer seal attachment portion 62e is formed and the raw water W cannot flow from the outer peripheral flow path 68 from the outer peripheral side surface of the filter medium forming portion. The area excluding the area may be set as the area of the outer peripheral side surface of the filter medium filling unit 65 in relation to the linear velocity described above.
That is, as described above, when the flow rate of the raw water W flowing through the filter medium filling unit 65 is a constant flow rate, the raw water W is radially formed between the outer peripheral side surface and the inner peripheral side surface of the filter medium filling unit 65. The linear velocity when water is passed is higher than the linear velocity when the raw water W is assumed to pass between the end surface on one end side in the axial direction X and the end surface on the other end side in the axial direction X of the filter medium filling portion 65. The areas of the outer peripheral side surface, the inner peripheral side surface, the end surface on one end side in the axial direction X, and the end surface on the other end side may be set so as to be smaller.

  And since this outer side sealing member 80 is provided, the purified water V which flows through the collective flow path 69 flows between the outer case 61 and the outer filter support body 62a in the other end side of the axial direction X, and an outer periphery flow path. 68, and the raw water W flowing through the outer peripheral flow path 68 is prevented from flowing between the outer case 61 and the outer filter support 62a on the other end side in the axial direction X and leaking into the collective flow path 69. can do.

  A lattice-like inner filter support 62 b that supports the inner filter 63 is provided along the entire circumference in the circumferential direction of the inner circumferential surface of the inner filter 63 from the lower end side to the upper end side in the axial direction X of the inner filter 63. ing. The inner filter support 62b is provided with an inner filter support opening 66b for water flow.

  Further, on one end side in the axial direction X of the inner filter support body 62b, an inner seal member 81 that seals the collecting flow path 69 along the entire circumference in the circumferential direction of the inner filter support body 62b is provided between the inner filter support body 62b and the inner filter support body 62b. It is provided between the pipe 70. The inner seal member 81 functions as the lower end portion of the collecting channel 69. On the other hand, the upper end portion of the collective flow channel 69 is formed by the upper surface 61 d of the outer case 61. Therefore, the collective flow path 69 is formed from the other end side in the axial direction X of the inner filter support body 62b to the one end side on the entire circumference in the circumferential direction on the inner circumference side of the inner filter support body 62b.

  Specifically, the inner seal member 81 is composed of an O-ring, and is formed along the entire circumference in the circumferential direction above the connection pipe portion 70a of the inner pipe 70 on the lower end side of the outer peripheral surface of the inner pipe 70. It is attached to the inner seal attaching part 70c. Thus, by attaching the inner filter support 62b to the outer peripheral side of the inner tube 70, the O-ring as the inner seal member 81 abuts on the inner peripheral surface of the inner filter support 62b, and the lower end portion of the collecting channel 69 is Sealed.

  Since the inner seal member 81 is provided, the purified water V flowing through the collecting channel 69 flows between the inner tube 70 and the inner filter support 62b on one end side in the axial direction X, and the outer peripheral channel 68. And the raw water W flowing through the outer peripheral flow path 68 is prevented from flowing between the inner pipe 70 and the inner filter support 62b on one end side in the axial direction X and leaking into the collective flow path 69. Can do.

  The water purification cartridge 6 is configured as described above, and the raw water W flows into the outer case 61 from the inlet 60 provided on one end side in the axial direction X of the outer peripheral surface 61b of the outer case 61, and the outer filter support 62a In the entire circumference in the circumferential direction on the outer circumference side, the outer flow path 68 formed from one end side to the other end side in the axial direction X of the outer filter support 62a flows from one end side to the other end side, and one end of the filter medium filling unit 65 The inner filter support 62b flows in the radially inner direction from the outer filter 64 side to the inner filter 63 from the outer side to the other end side, and the axial direction of the inner filter support 62b in the entire circumference of the inner peripheral side of the inner filter support 62b It flows out to the collecting flow path 69 formed from the other end side of X to the one end side.

  And the purified water V which passed the filter material filling part 65 flows toward the upper end side from the lower end side of the inner filter support body 62b in the collective flow path 69, and the other end side opening part 70b provided in the upper end side of the inner side pipe 70, and From the gap P formed between the upper surface 61 d on the upper end side of the outer case 61, the purified water V flows from the collecting channel 69 into the in-tube channel 72 formed in the inner tube 70, and enters the in-tube channel 72. The purified water V that has flowed in passes through the hollow fiber membrane 71, and the purified water V that has passed through the hollow fiber membrane 71 flows out of the outer case 61 from the outlet 67.

  Further, as shown in FIG. 2, the water purification cartridge 6 supplies the raw water W to the outlet 67, and the water supply hose 3 and the water purification discharge pipe 8 are connected to the water purification cartridge 6 so that the purified water V flows out from the inlet 60. The connection may be changed, and the raw water W may be purified by passing through the filter medium filling portion 65 in the radially outward direction from the collecting channel 69 toward the outer peripheral channel 68. With such a configuration, the pressure loss can be reduced.

[Second Embodiment]
A second embodiment of the present invention will be described with reference to the drawings.
Although 1st Embodiment demonstrated the example applied to the countertop type water purifier which attaches the water purifier which concerns on this invention to the faucet of water supply, in this 2nd Embodiment, as shown in FIG. 3, the water purifier which concerns on this invention is shown. The example which applies a water purifier to a pot type water purifier is demonstrated.

  The pot-type water purifier 100 as the water purifier according to the second embodiment includes a point where the outer case 61 has a water storage tank 102 for storing the purified water V, and a raw water tank 101 for storing the raw water W in the outer case 61. In that respect, it is different from the water purification cartridge 6 as the water purifier according to the first embodiment.

  Further, the pot-type water purifier 100 as the water purifier according to the second embodiment includes the inner pipe 70 that forms the pipe flow path 72 provided with the hollow fiber membrane 71, and the entire circumference in the circumferential direction of the outer filter support 62a. The water purification cartridge 6 as the water purifier according to the first embodiment is not provided with the outer sealing member 80 that seals along the inner circumference and the inner sealing member 81 that seals along the entire circumference of the inner pipe 70 in the circumferential direction. Is different.

That is, the pot-type water purifier 100 as the water purifier according to the second embodiment includes an outer case 61 having a water storage tank 102 for storing the purified water V and an outlet 67 from which the stored purified water V flows out. A raw water tank 101 for storing raw water W and a filter medium filling part 65 filled with a filter medium in the outer case 61, the filter medium filling part 65 is formed in a hollow cylindrical shape,
An outer filter 64 disposed on the outer peripheral side surface of the filter medium filling unit 65 and an inner filter 63 disposed on the inner peripheral side surface of the filter medium filling unit 65 are provided. A collecting flow path 69 is provided that extends in the axial direction of 65.

  Further, the raw water W is guided from the raw water tank 101 to the collecting flow path 69, filtered through the filter medium filling portion 65 from the collecting flow path 69 toward the outer filter 64, and the filtered purified water V is filtered by the outer filter. 64 is configured to be led to the water storage tank 102 through the outer peripheral side of 64.

  And the length from the one end side of the axial direction of the filter medium filling part 65 to the other end side is formed longer than the length between the outer peripheral side surface and the inner peripheral side face in the radial direction of the filter medium filling part 65, and In the case where the flow rate of the raw water W flowing through the filter medium filling unit 65 is a constant flow rate, the raw water W is passed through between the outer peripheral side surface and the inner peripheral side surface of the filter medium filling unit 65 in the radial direction. The linear velocity is smaller than the linear velocity when it is assumed that the raw water W passes in the axial direction between the end face on one end side in the axial direction of the filter medium filling portion 65 and the end face on the other end side in the axial direction. The areas of the outer peripheral side surface, the inner peripheral side surface, the end surface on one end side, and the end surface on the other end side are set.

  The axial direction is the vertical direction in FIG. 3, and one side in the axial direction is the lower side in FIG. 3, and the other side in the axial direction is the upper side in FIG. Therefore, in the following description, for example, one end side in the axial direction of the outer case 61 is described as the lower end side of the outer case 61, and the other end side in the axial direction of the outer case 61 is described as the upper end side of the outer case 61. is there.

  Specifically, in the pot-type water purifier 100 shown in FIG. 3, the raw water W flows through the filter medium filling portion 65 in the outer diameter direction from the collecting channel 69 toward the outer filter 64. In this pot-type water purifier 100, the filter support lower portion constituting member 62 d provided on the lower end side of the filter support case 62 covers the lower end side of the collective flow channel 69 formed on the inner peripheral side of the filter support case 62. It is configured. The filter support upper end surface 62 c of the filter support case 62 is provided with a connecting portion 62 f for connecting the filter support case 62 to the opening 101 a provided at the bottom of the raw water tank 101.

  In this way, the pot-type water purifier 100 is configured, and the raw water W stored in the raw water tank 101 flows into the collecting flow path 69 provided on the inner peripheral side of the filter support case 62. The raw water W that has flowed into the collecting channel 69 is filtered by passing the filter medium filling portion 65 from the collecting channel 69 to the outer filter 64 in the outer diameter direction, and the filtered purified water V is provided in the outer case 61. Stored in the storage tank 102. And the purified water V stored in the water storage tank 102 can be flowed out from the outflow port 67 by inclining the outer case 61 to the outflow port 67 side.

[Third Embodiment]
A third embodiment of the present invention will be described with reference to the drawings. Also in the third embodiment, an example in which the water purifier according to the present invention is applied to a pot type water purifier as shown in FIG. 4 will be described.

  A pot-type water purifier 200 as a water purifier according to the third embodiment includes a water tank 102 that stores the purified water V in the outer case 61, and a raw water tank 101 that stores the raw water W in the outer case 61. And an intermediate case 90 as a cylindrical intermediate member that is accommodated in the outer case 61 and has an inflow portion 90a through which raw water W flows from the raw water tank 101 and an outflow portion 90b through which purified water V flows into the water storage tank 102. The intermediate case 90 is different from the water purifier according to the first embodiment in that the filter medium filling part 65 is accommodated.

  The pot-type water purifier 200 includes an inner pipe 70 that forms a pipe flow path 72 provided with a hollow fiber membrane 71, an outer seal member 80 that seals along the entire circumference of the outer filter support 62a, and In the point which is not provided with the inner side sealing member 81 sealed along the perimeter of the circumferential direction of the inner side pipe | tube 70, it differs from the water purification cartridge 6 as a water purifier which concerns on 1st Embodiment.

  That is, the pot-type water purifier 200 as the water purifier according to the third embodiment includes an outer case 61 having a water storage tank 102 for storing the purified water V and an outlet 67 from which the stored purified water V flows out. The raw water tank 101 that stores the raw water W and the filter medium filling part 65 filled with the filter medium in the outer case 61 are provided, and the filter medium filling part 65 is formed in a hollow cylindrical shape. An outer filter 64 disposed on the outer peripheral side surface and an inner filter 63 disposed on the inner peripheral side surface of the filter medium filling portion 65 are provided, and are accommodated in the outer case 61, and raw water W flows from the raw water tank 101. A cylindrical intermediate case 90 having an inflow portion 90 a and an outflow portion 90 b through which purified water V flows into the water storage tank 102 is provided.

  Further, in the axial direction between the collecting flow path 69 provided in a state extending in the axial direction of the filter medium filling portion 65 on the inner peripheral side of the inner filter 63 and the outer peripheral side of the outer filter 64 and the inner peripheral side of the intermediate case 90. An intermediate case flow path 91 provided in an extended state, and the raw water W is guided from the raw water tank 101 to the intermediate case flow path 91, and the filter medium filling portion 65 is radially inward from the intermediate case flow path 91 toward the collective flow path 69. The purified water V is filtered by flowing in the direction, and the filtered purified water V flows through the collecting channel 69 and is guided to the outflow portion 90b.

  And the length from the one end side of the axial direction of the filter medium filling part 65 to the other end side is formed longer than the length between the outer peripheral side surface and the inner peripheral side face in the radial direction of the filter medium filling part 65, and In the case where the flow rate of the raw water W flowing through the filter medium filling unit 65 is a constant flow rate, the raw water W is passed through between the outer peripheral side surface and the inner peripheral side surface of the filter medium filling unit 65 in the radial direction. The linear velocity is smaller than the linear velocity when it is assumed that the raw water W passes in the axial direction between the end face on one end side in the axial direction of the filter medium filling portion 65 and the end face on the other end side in the axial direction. The areas of the outer peripheral side surface, the inner peripheral side surface, the end surface on one end side, and the end surface on the other end side are set.

  The axial direction is the vertical direction in FIG. 4, and one side in the axial direction is the lower side in FIG. 4, and the other side in the axial direction is the upper side in FIG. Therefore, in the following description, for example, one end side in the axial direction of the outer case 61 is described as the lower end side of the outer case 61, and the other end side in the axial direction of the outer case 61 is described as the upper end side of the outer case 61. is there.

In the pot-type water purifier 200 shown in FIG. 4, an intermediate case 90 is provided on the outer peripheral side of the filter support case 62, and an intermediate case flow path 91 is provided between the outer peripheral side of the outer filter 64 and the inner peripheral surface of the intermediate case 90. Is formed. An inflow portion 90 a into which the raw water W flows from the raw water tank 101 is provided on the upper end side of the intermediate case flow path 91.
Further, a connecting portion 90 c for connecting the intermediate case 90 to an opening 101 a provided at the bottom of the raw water tank 101 is provided at the upper end portion of the intermediate case 90. On the other hand, at the lower end portion of the intermediate case 90, the raw water W flowing through the intermediate case flow path 91 is detachable in contact with the entire circumference of the outer filter support 62a so as not to flow out of the outflow portion 90b. An outer filter support engaging portion 90d is formed to engage with the outer filter support.

  In this pot-type water purifier 200, the filter support upper end surface 62 c provided on the upper end side of the filter support case 62 closes the upper end side of the collective flow path 69 formed on the inner peripheral side of the filter support case 62. It is configured. On the other hand, the filter support lower member 62d provided on the lower end side of the filter support case 62 communicates with the water storage tank 102 at the lower end side of the collecting channel 69 formed on the inner peripheral side of the filter support case 62. An opening 62g is formed. The opening 62 g is configured to communicate with an outflow portion 90 b provided at the lower end of the intermediate case 90, and the purified water V can flow out from the collecting channel 69 to the water storage tank 102.

  In this way, the pot-type water purifier 200 is configured, and the raw water W stored in the raw water tank 101 flows into the intermediate case flow path 91 and then flows from the intermediate case flow path 91 toward the collective flow path 69 to the filter medium filling portion 65. The filtered purified water V flows out from the opening 62g of the filter support lower component 62d and the outflow portion 90b of the intermediate case 90 and is stored in the outer case 61. Stored in the tank 102. And the purified water V stored in the water storage tank 102 can be flowed out from the outflow port 67 by inclining the outer case 61 to the outflow port 67 side.

[Another embodiment]
Hereinafter, other embodiments are listed.
(1) In the said 1st Embodiment, the main body casing member 41 which accommodates the water purification cartridge 6 as a water purifier is provided, and it filters with the water supply hose 3 which supplies the raw | natural water W to the main body casing member 41, and the water purification cartridge 6. However, the present invention is not limited to this, and the water supply hose 3 and the purified water discharge pipe 8 may be connected to the purified water cartridge 6 without providing the main body casing member 41. .

(2) In the first embodiment, the inlet 60 through which the raw water W flows is provided on one end side of the outer peripheral surface 61b of the outer case 61 of the water purification cartridge 6. However, the present invention is not limited thereto. You may provide in the upper end side (other end side) of the outer peripheral surface 61b of the case 61. FIG. In this case, the outer seal member 80 may be provided on the lower end side (one end side) of the outer case 61. In addition, the inflow port 60 may be provided on the lower surface 61c or the upper surface 61d of the outer case 61.

(3) In the first embodiment, the inner tube 70 provided with the hollow fiber membrane 71 is provided on the inner side. However, the inner tube 70 is not limited thereto, and the inner tube 70 from which the hollow fiber membrane 71 is omitted may be provided. . In addition, the hollow fiber membrane 71 and the inner tube 70 may be omitted, and in this case, the inner seal member 81 may be omitted.

(4) In the first embodiment, the outer filter support 62a that supports the outer filter 64 has the entire circumference in the circumferential direction of the outer circumferential surface of the outer filter 64 from the lower end side to the upper end side in the axial direction X of the outer filter 64. However, the present invention is not limited to this, and the outer filter support 62a that supports the outer filter 64 is provided in the circumferential direction of the outer circumferential surface of the outer filter 64 only in the upper end side portion in the axial direction X of the outer filter 64. It may be provided along the entire circumference.

(5) In the first embodiment, the inner filter support 62b that supports the inner filter 63 has the entire inner circumferential surface of the inner filter 63 in the circumferential direction from the lower end side to the upper end side in the axial direction X of the inner filter 63. Although not limited to this, the inner filter support 62b that supports the inner filter 63 is provided around the inner peripheral surface of the inner filter 63 only at the upper end side portion in the axial direction X of the inner filter 63. It may be provided along the entire circumference of the direction.

(6) In the first embodiment, the in-tube flow path 72 is configured to communicate with the collective flow path 69 on the upper end side in the axial direction X of the outer case 61. May be configured to communicate with the collecting channel 69 on the lower end side in the axial direction X of the outer case 61. That is, the gap P may be formed between the lower end side of the inner tube 70 and the lower surface 61c on the lower end side of the outer case 61, and the outlet 67 may be provided on the upper end side. In this case, the inner seal member 81 may be provided on the other end side in the axial direction X of the inner filter support 62b.

(7) In the first embodiment, the outer seal member 80 that seals the outer peripheral flow path 68 on the other end side in the axial direction X along the entire circumference of the outer filter support 62a is the outer filter support. Although not limited to this, it is provided between the outer case 61 and the outer case 61. However, the outer peripheral flow path 68 is sealed on the other end side in the axial direction X along the entire circumference of the outer filter support 62a. May be provided along the entire circumference in the circumferential direction on the upper end side of the outer filter support 62a. In this case, the outer seal attachment portion 62e formed along the entire circumference in the circumferential direction on the upper end side of the outer filter support 62a may be omitted.

(8) In the first embodiment, the inner seal member 81 that seals the collecting channel 69 along the entire circumference in the circumferential direction of the inner tube 70 on one end side in the axial direction X includes the inner filter support 62b and the inner side. Although not limited to this, the convex portion that seals the collecting channel 69 along the entire circumference in the circumferential direction of the inner tube 70 on one end side in the axial direction X is not limited thereto. You may provide along the perimeter of the circumferential direction of one end side. Alternatively, a convex portion that seals the collecting channel 69 along the entire circumference in the circumferential direction of the inner tube 70 on one end side in the axial direction X is provided along the entire circumference in the circumferential direction on one end side of the inner filter support 62b. May be. In this case, on the lower end side of the outer peripheral surface of the inner tube 70, the inner seal attaching portion 70c formed along the entire circumference in the circumferential direction above the connection tube portion 70a of the inner tube 70 may be omitted.

(9) In the first embodiment, the example in which the water purifier according to the present invention is applied to the countertop water purifier has been described. However, the types of water purifiers that can reduce the pressure loss according to the present invention are limited thereto. It is not a thing. For example, the water purifier according to the present invention may be applied to a faucet direct-coupled water purifier, an undersink water purifier, and a faucet integrated water purifier.

  The configuration disclosed in the above embodiment (including another embodiment, the same shall apply hereinafter) can be applied in combination with the configuration disclosed in the other embodiment, as long as no contradiction occurs. The embodiment disclosed in this specification is an exemplification, and the embodiment of the present invention is not limited to this. The embodiment can be appropriately modified without departing from the object of the present invention.

  As described above, it is possible to provide a water purifier that can reduce pressure loss caused by water passing through the filter medium filling portion.

6 Water purification cartridge (water purifier)
60 Inlet 61 Outer Case 62a Outer Filter Support 62b Inner Filter Support 63 Inner Filter 64 Outer Filter 65 Filter Material Filling Portion 67 Outlet 68 Outer Peripheral Channel 69 Collective Channel 70 Inner Tube 71 Hollow Fiber Membrane 72 Intraduct Channel 80 Outside Seal member 81 Inner seal member 90 Intermediate case (intermediate member)
90a Inflow part 90b Outflow part 100 Pot type water purifier (water purifier)
200 Pot type water purifier (water purifier)
101 Raw water tank 102 Water tank V Purified water W Raw water X Axial direction

Claims (8)

A water purifier provided with an outer case having an inlet into which raw water flows in and an outlet through which purified water flows out, and a filter medium filling portion filled with a filter medium inside the outer case,
The filter medium filling part is formed in a hollow cylindrical shape,
An outer filter disposed along the circumferential direction of the outer peripheral side surface of the filter medium filling portion and an inner filter disposed along the circumferential direction of the inner circumferential side surface of the filter medium filling portion;
A state of extending in the axial direction between the collecting flow path provided in a state of extending in the axial direction of the filter medium filling portion on the inner peripheral side of the inner filter, and the outer peripheral side of the outer filter and the inner peripheral side of the outer case And an outer peripheral flow path provided in
The raw water is guided from the inflow port to one of the collective flow path and the peripheral flow path, and is filtered through the filter medium filling portion between the peripheral flow path and the collective flow path in the radial direction. The filtered purified water is configured to be guided to the outlet by the other of the collecting channel and the outer peripheral channel,
The length from the one end side in the axial direction to the other end side of the filter medium filling portion is formed longer than the length between the outer peripheral side surface and the inner peripheral side surface in the radial direction of the filter medium filling portion, In addition, when the flow rate of the raw water flowing through the filter medium filling portion is set to a constant flow rate, the raw water is passed in a radial direction between the outer peripheral side surface and the inner peripheral side surface of the filter medium filling portion. When the linear velocity in the case of assuming that the raw water passes in the axial direction between the end surface on the one end side in the axial direction and the end surface on the other end side in the axial direction of the filter medium filling portion The water purifier in which areas of the outer peripheral side surface, the inner peripheral side surface, the end surface on the one end side in the axial direction, and the end surface on the other end side are set so as to be smaller than the linear velocity. The inflow port or the outflow port is provided on one end side of the outer case in the axial direction;
An outer filter support that supports the outer filter is provided along the entire circumference of the outer circumferential surface of the outer filter on the other end side in the axial direction of the outer filter,
An outer seal member is provided between the outer filter support and the outer case for sealing the outer peripheral flow path along the entire circumference in the circumferential direction of the outer filter support on the other end side in the axial direction. The water purifier according to claim 1. On the inner peripheral side of the inner filter, an inner tube forming a tube flow path provided with a hollow fiber membrane is provided in a state extending in the axial direction,
The collecting channel is formed between the inner filter and the inner tube;
One end side of the in-pipe flow path communicates with the inflow port or the outflow port provided on one end side in the axial direction of the outer case, and the other end side of the in-pipe flow path is the other end in the axial direction of the outer case. Configured to communicate with the collecting channel on the side,
An inner filter support that supports the inner filter is provided along the entire circumference of the inner circumferential surface of the inner filter on one end side in the axial direction of the inner filter;
The inner seal member that seals the collective flow path along the entire circumference in the circumferential direction of the inner tube at one end in the axial direction is provided between the inner filter support and the inner tube. The water purifier according to 1 or 2.   The water purifier according to any one of claims 1 to 3, wherein the raw water passes the filter medium filling portion in a radially inward direction from the outer peripheral flow path to the collecting flow path.   The water purifier according to any one of claims 1 to 3, wherein the raw water passes the filter medium filling portion in a radially outward direction from the collecting channel to the outer peripheral channel. An outer case having a water storage tank for storing purified water and an outlet through which the stored purified water flows out, a raw water tank for storing raw water stored in the outer case, and a filter medium filled with a filter medium inside the outer case A water purifier provided with a
The filter medium filling part is formed in a hollow cylindrical shape,
An outer filter disposed on an outer peripheral side surface of the filter medium filling portion and an inner filter disposed on an inner peripheral side surface of the filter medium filling portion;
A collecting channel provided in a state extending in the axial direction of the filter medium filling portion on the inner peripheral side of the inner filter;
The raw water is guided from the raw water tank to the collecting flow path, filtered through the filter medium filling portion from the collecting flow path toward the outer filter, and the filtered purified water is filtered by the outer filter. It is configured to be led to the water storage tank through the outer peripheral side,
The length from the one end side in the axial direction to the other end side of the filter medium filling portion is formed longer than the length between the outer peripheral side surface and the inner peripheral side surface in the radial direction of the filter medium filling portion, In addition, when the flow rate of the raw water flowing through the filter medium filling portion is set to a constant flow rate, the raw water is passed in a radial direction between the outer peripheral side surface and the inner peripheral side surface of the filter medium filling portion. When the linear velocity in the case of assuming that the raw water passes in the axial direction between the end surface on the one end side in the axial direction and the end surface on the other end side in the axial direction of the filter medium filling portion The water purifier in which areas of the outer peripheral side surface, the inner peripheral side surface, the end surface on the one end side, and the end surface on the other end side are set so as to be smaller than the linear velocity. An outer case having a water storage tank for storing purified water and an outlet through which the stored purified water flows out, a raw water tank for storing raw water stored in the outer case, and a filter medium filled with a filter medium inside the outer case A water purifier provided with a
The filter medium filling part is formed in a hollow cylindrical shape,
An outer filter disposed on an outer peripheral side surface of the filter medium filling portion and an inner filter disposed on an inner peripheral side surface of the filter medium filling portion;
A cylindrical intermediate member that is housed in the outer case and has an inflow portion from which the raw water flows from the raw water tank and an outflow portion from which the purified water flows out to the water storage tank is provided,
A state of extending in the axial direction between a collecting flow path provided in a state extending in the axial direction of the filter medium filling portion on an inner peripheral side of the inner filter, and an outer peripheral side of the outer filter and an inner peripheral side of the intermediate member And an intermediate flow path provided in
The raw water is guided from the raw water tank to the intermediate flow path, filtered through the filter medium filling portion in a radial direction from the intermediate flow path toward the collective flow path, and the filtered purified water is the collective flow. Configured to flow through a path and be led to the outflow part,
The length from the one end side in the axial direction to the other end side of the filter medium filling portion is formed longer than the length between the outer peripheral side surface and the inner peripheral side surface in the radial direction of the filter medium filling portion, In addition, when the flow rate of the raw water flowing through the filter medium filling portion is set to a constant flow rate, the raw water is passed in a radial direction between the outer peripheral side surface and the inner peripheral side surface of the filter medium filling portion. When the linear velocity in the case of assuming that the raw water passes in the axial direction between the end surface on the one end side in the axial direction and the end surface on the other end side in the axial direction of the filter medium filling portion The water purifier in which areas of the outer peripheral side surface, the inner peripheral side surface, the end surface on the one end side, and the end surface on the other end side are set so as to be smaller than the linear velocity.   The water purifier according to any one of claims 1 to 7, wherein the filter medium is activated carbon particles having a particle size of 48 to 300 mesh.

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