JP2012024741A - Water purification cartridge and water purifier equipped with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance water purification performance by enabling effective use of the whole granular filter medium filling a filter medium filling space by preventing the deterioration of the granular filter medium density at the open end side in the axis direction of the filter medium filling space.SOLUTION: The granular filter medium 11 fills the cylindrical filter medium filling space 10 formed between the inner surface of an inner cylindrical filter tube 8 and the outer surface of an outer cylindrical filter tube 9 and provided with one end in the axis direction closed and the other end opened. A lid 15 for closing the filter medium filling space 10 is provided attachably to the open end side in the axis direction of the filling space 10. The lid 15 attached to the open end side in the axis direction of the filling space 10 has projections 17 projecting into the filter medium filling space 10 side, leaving some discontinuous spaces 17a discontinuous in the radial direction of the filling space 10.

Description

  In the present invention, one end portion in the axial direction is closed and the other end portion is opened between the inner peripheral surface constituted by the cylindrical inner filter medium and the outer peripheral surface constituted by the cylindrical outer filter medium. The present invention relates to a water purification cartridge in which a cylindrical filter medium filling space is formed, and the filter medium filling space is filled with a granular filter medium, and a water purifier including the water purification cartridge.

  In the water purification cartridge as described above, the cylindrical inner filter medium and the cylindrical outer filter medium are arranged so that their central axes are the same axis, and the inner peripheral surface constituted by the inner filter medium and the outer filter medium are arranged. A cylindrical filter medium filling space in which one end portion in the axial center direction is closed and the other end portion is opened is formed between the outer peripheral surface and the outer peripheral surface. Then, the filter medium filling space is filled with granular filter medium such as granular activated carbon, and the filter medium filling space filled with the granular filter medium is closed by attaching a lid to the opening end side in the axial direction in the filter medium filling space. (For example, refer to Patent Document 1). In the water purification cartridge described in Patent Document 1, the lid is configured to be attachable to the opening end side in the axial direction in the filter medium filling space via the flat activated carbon presser and the flat nonwoven fabric. . Moreover, patent document 1 is a water purifier provided with such a water purification cartridge, and in this water purifier, the full length of the water purification cartridge in the axial direction of the filter medium filling space outside the water purification cartridge in the radial direction of the filter medium filling space. An outer peripheral flow path for allowing water to flow therethrough is provided. Then, the water flowing through the outer peripheral flow path is purified by flowing in the radial direction of the filter medium filling space in the order of the outer filter medium, the filter medium filling space filled with the granular filter medium, and the inner filter medium, and the purified water is purified. The purified water is collected from the outflow part by collecting in the collecting flow path inside the inner filter medium.

In addition, the outer filter medium is a cartridge case for the water purification cartridge, but a filter medium filling space is formed between the inner peripheral surface formed by the inner filter medium and the outer peripheral surface formed by the cartridge case, and the filter medium is filled. A water purification cartridge that fills a space with a particulate filter medium is also known (for example, see Patent Document 2).
In Patent Document 2, the lid body is formed by screwing a screw portion formed on the outer peripheral portion of the lid with a screw portion formed on the inner peripheral portion of the cartridge case, so that the opening end side in the axial direction in the filter medium filling space. It is configured to be freely attachable to. And in the state with which the cover body was mounted | worn at the opening end side of the axial center direction in filter material filling space, the full length from a center part to an end part in the radial direction (left-right direction of FIG. 1 in patent document 2) of filter medium filling space. It is formed in the bulging shape provided with the bulging part which bulges to the filter material filling space side continuously in a row.

JP 2001-162270 A JP-A-5-261363

  When the filter medium filling space is filled with the granular filter medium in the water purification cartridge as described above, for example, the closed end side is the lower side and the open end side is the upper side in the axial direction of the filter medium filling space. The granular filter medium is sequentially charged into the filter medium filling space from above and filled. At this time, the density of the particulate filter medium tends to be highest on the closed end side in the axial direction of the filter medium filling space and lower as it approaches the opening end side. There is a possibility that the density of the granular filter medium varies depending on the opening end side. If the density of the granular filter medium varies, water easily flows to the part where the density of the granular filter medium is low, the entire granular filter medium filled in the filter medium filling space cannot be used efficiently, and the water purification performance decreases. It will be.

Therefore, it is required to prevent a decrease in the density of the granular filter medium on the opening end side in the axial direction of the filter medium filling space so that the density of the granular filter medium becomes uniform in the axial direction of the filter medium filling space.
However, in the thing of the said patent document 1, when attaching a cover body to the opening end side of the axial center direction in filter material filling space, it only presses the granular filter medium by flat activated carbon presser. The gap between the particulate filter media cannot be filled, and the decrease in the density of the particulate filter media on the opening end side in the axial direction of the filter media filling space cannot be prevented.
In the thing of the said patent document 2, in the state with which the cover body was mounted | worn at the opening end side of the axial center direction in filter material filling space, it is in the bulging shape provided with the bulging part which bulges to the filtering material filling space side. Since it is formed, it is considered that the density of the granular filter medium can be increased by inserting the bulging portion between the granular filter mediums. However, the lid is attached by screwing of the screw portion, and when the lid is attached, the lid and the bulging portion rotate integrally. And since the bulging part is a shape that continuously swells to the filter medium filling space side over the entire length from the center part to the end part in the radial direction of the filter medium filling space, when the bulging part rotates, Only the particulate filter medium present on the front side in the rotation direction is pressed toward the front side in the rotation direction, and the density of the granular filter medium increases on the front side in the rotation direction of the bulge part. On the rear side in the direction, the density of the granular filter medium is low. As a result, a portion where the density of the granular filter medium is lower is formed on the opening end side in the axial direction of the filter medium filling space, and the density of the granular filter medium on the opening end side in the axial direction of the filter medium filling space is reduced. Can not be prevented.

  The present invention has been made paying attention to such a point, and the object thereof is to prevent a decrease in the density of the particulate filter medium on the opening end side in the axial direction of the filter medium filling space, and to fill the filter medium filling space. The present invention provides a water purification cartridge that can efficiently use the entire granular filter medium and improve water purification performance, and a water purifier equipped with the water purification cartridge.

  In order to achieve this object, the characteristic configuration of the water purification cartridge according to the present invention is between an inner peripheral surface configured by a cylindrical inner filter medium and an outer peripheral surface configured by a cylindrical outer filter medium. In a water purification cartridge in which a cylindrical filter medium filling space with one end portion in the axial direction closed and the other end opened is formed, and the filter medium filling space is filled with granular filter medium, the filter medium filling space is closed. A lid is provided on the opening end side in the axial direction of the filter medium filling space, and the lid body is mounted on the opening end side in the axial direction of the filter medium filling space. In the state, the protruding portion that protrudes toward the filter medium filling space is provided with a discontinuous portion that is not continuous in the radial direction of the filter medium filling space.

  According to this characteristic configuration, when the filter medium filling space is filled with the particulate filter medium, the lid is attached to the opening end side in the axial direction of the filter medium filling space to close the filter medium filling space. At this time, since the lid is provided with a protruding portion that protrudes toward the filter medium filling space in the mounted state, the protruding portion is inserted between the granular filter media. And since the protrusion has a discontinuous portion that is not continuous in the radial direction of the filter medium filling space, the protrusion inserted between the granular filter media is not only the axial direction of the filter medium filling space, Also in the radial direction of the filter medium filling space, the lid can be mounted while uniformly pressing the granular filter medium present around the protruding portion. Thereby, the clearance gap between granular filter media can be eliminated, the density of a granular filter media can be made high, and the fall of the density of the granular filter media in the opening end side in the axial center direction of a material filling space can be prevented. As a result, the density of the particulate filter medium on the opening end side in the axial direction of the filter medium filling space can be prevented, the entire granular filter medium filled in the filter medium filling space can be efficiently used, and the water purification performance can be improved. A water purification cartridge can be realized.

  A further characteristic configuration of the water purification cartridge according to the present invention is that the lid is fitted to the outer filter medium in a state where the lid is disposed inside the end of the outer filter medium in the axial direction of the filter medium filling space. It is in the point that it is configured freely.

  According to this characteristic configuration, the lid body can be fitted into the outer filter medium on the opening end side in the axial direction of the filter medium filling space, so that, for example, the outer peripheral surface of the lid body and the inner peripheral surface of the outer filter medium By using the strength of the outer filter medium to secure the sufficient strength as the strength at the opening end side in the axial direction of the filter medium filling space, the cover body is properly mounted. Can be fixed to. And about the arrangement position of the lid in the axial direction of the filter medium filling space, since it is arranged inside the end of the outer filter medium, the length of the water purification cartridge in the axial direction of the filter medium filling space, Determined by the length of the outer filter media. Therefore, in order to manufacture the length of the water purification cartridge with high accuracy, it is only necessary to manufacture the length of the outer filter medium with high accuracy, and the length of the water purification cartridge can be accurately manufactured while simplifying the production. can do.

  A further characteristic configuration of the water purification cartridge according to the present invention is that a plurality of the protrusions are provided in a distributed manner in the circumferential direction of the filter medium filling space.

  According to this characteristic configuration, since the plurality of protrusions are provided dispersed in the circumferential direction of the filter medium filling space, the plurality of protrusions are inserted between the granular filter media. And since each protrusion can attach a cover body, pressing the granular filter material which exists around the protrusion uniformly, the gap between granular filter media can be eliminated exactly, and granular filter media It is possible to accurately increase the density.

  A further characteristic configuration of the water purification card ridge according to the present invention is that the protrusions are provided so as to continue in series over the entire length in the circumferential direction of the filter medium filling space.

  According to this characteristic configuration, since the protrusions are continuously connected over the entire length in the circumferential direction of the filter medium filling space, the protrusions are inserted between the granular filter media over the entire length in the circumferential direction of the filter medium filling space. Is done. And since a protrusion can attach a cover body, pressing the granular filter material which exists in the circumference of the protrusion uniformly, the gap between granular filter media can be eliminated exactly, and the density of granular filter media Can be accurately performed.

  A further characteristic configuration of the water purification cartridge according to the present invention is that a guide portion that can guide the lid to an appropriate mounting position is provided at an end portion of the inner filter medium in an axial direction of the filter medium filling space. It is in.

  According to this characteristic configuration, the lid is attached to the opening end side in the axial direction of the filter medium filling space to close the filter medium filling space, but at this time, the lid is guided to the proper attachment position by the guide unit. The lid can be easily and reliably attached to the appropriate attachment position. Here, the proper mounting position means that, for example, the center axis of the lid coincides with the center axis of the inner filter medium and the outer filter medium, and as described above, the lid is the end of the outer filter medium in the axial direction of the filter medium filling space. It can be set as the position arrange | positioned inside a part.

  The characteristic configuration of the water purifier according to the present invention includes the water purification cartridge having the above-described characteristic configuration described so far, and the water received in the inflow portion is disposed outside the water purification cartridge in the radial direction of the filter medium filling space. An outer peripheral flow path that is freely flowable over the entire length of the water purification cartridge in the axial direction of the filter medium filling space is provided, and water flowing through the outer peripheral flow path is collected from the outer peripheral flow path to the inside of the inner filter medium. It is the point which is made to be able to purify by letting it flow through the flow path in the radial direction of the filter medium filling space.

  According to this characteristic configuration, the water received at the inflow portion is passed through the outer peripheral flow path, and flows through the entire length of the water purification cartridge in the axial direction of the filter medium filling space, and flows through the outer peripheral flow path. Water is purified by being passed from the outer peripheral channel to the collecting channel in the radial direction of the filter medium filling space. As described above, the water purification cartridge according to the present invention prevents the density of the granular filter medium on the opening end side in the axial center direction of the filter medium filling space from decreasing, and the entire granular filter medium filled in the filter medium filling space is removed. Because it can be used efficiently, the water flowing through the entire length of the water purification cartridge in the axial direction of the filter medium filling space is purified while efficiently using the entire granular filter medium filled in the filter medium filling space. It is possible to realize a water purifier having high performance as water purification performance.

Sectional drawing of the water purifier provided with the water purification cartridge which concerns on this invention Sectional drawing of the water purification cartridge which concerns on this invention The figure which shows the principal part of the water purification cartridge which concerns on this invention The figure which shows the principal part of the water purification cartridge in 2nd Embodiment. The figure which shows the principal part of the water purification cartridge in 2nd Embodiment. The figure which shows the principal part of the water purification cartridge in 2nd Embodiment. Graph showing the relationship between removal rate and water flow rate

EMBODIMENT OF THE INVENTION Embodiment of the water purifier provided with the water purifying cartridge which concerns on this invention is described based on drawing.
[First Embodiment]
As shown in FIG. 1, this water purifier is provided with a water purification cartridge 2 according to the present invention inside a faucet body 1, and filters the water N1 received at the inflow portion 3 through the water purification cartridge 2, The filtered water N2 is constituted by a faucet type water purifier that flows out from the outflow portion 4.

  The faucet body 1 is provided with a first internal space 5 that can receive water N1 by the inflow portion 3 and a second internal space 6 that can flow out the filtered purified water N2 at the outflow portion 4. The first internal space 5 and the second internal space 6 are communicated with each other by the communication portion 7. And the water purification cartridge 2 is accommodated in the 1st internal space 5, The water N1 received in the 1st internal space 5 by the inflow part 3 is filtered with the water purification cartridge 2. FIG. The purified water N2 filtered by the water purification cartridge 2 in the first internal space 5 flows from the first internal space 5 to the second internal space 6 through the communication portion 7 and flows out from the outflow portion 4 to the outside. The outflow part 4 is configured to freely flow out the purified water N2 in a shower state.

  As shown in FIGS. 1 to 3, the water purification cartridge 2 includes a cylindrical inner filter medium 8 and a cylindrical outer filter medium 9, and is arranged so that the central axes of the inner filter medium 8 and the outer filter medium 9 are the same axis. It is formed in a cylindrical shape. The inner filter medium 8 and the outer filter medium 9 are made of a filter medium capable of maintaining a cylindrical shape. And as the inner filter medium 8 and the outer filter medium 9, for example, a non-woven fabric, a porous resin molded product, a resin molded product such as a mesh insert molded product, or a non-woven fabric wrapped around a resin molded into a perforated cylindrical shape Etc. are applicable. Here, FIG. 2 is a cross-sectional view of the water purification cartridge 2, FIG. 3 (a) is an exploded perspective view of the water purification cartridge 2 before mounting a lid 15 (to be described later), and FIG. It is a perspective view which shows the back surface side of the cover body 15 mentioned later.

  A cylindrical filter medium filling space 10 between an inner peripheral surface formed by the inner filter medium 8 (an outer peripheral surface of the inner filter medium 8) and an outer peripheral surface formed by the outer filter medium 9 (an inner peripheral surface of the outer filter medium 9). Is formed, and the filter medium filling space 10 is filled with a granular filter medium 11 (for example, granular activated carbon). The water purification cartridge 2 is accommodated in the first internal space 5, and the first internal space is formed so as to form an outer peripheral flow path 12 between the inner peripheral surface of the faucet body 1 and the outer peripheral surface of the outer filter medium 9. A water purification cartridge 2 is housed in 5. And this outer periphery flow path 12 makes the water N1 received in the inflow part 4 to the full length of the water purification cartridge 2 in the axial center direction of the water purification cartridge 2, ie, the axial center direction (X1 direction in the figure) of the filter medium filling space 10. It is configured so that it can flow freely. Thereby, the water N1 received in the inflow part 4 flows over the entire length of the water purification cartridge 2 in the axial direction (X1 direction in the figure) of the filter medium filling space 10 in the outer peripheral flow path 12, and the outer periphery thereof. The water N1 flowing through the flow path 12 is in the radial direction of the water purification cartridge 2 in the order of the outer filter medium 9, the filter medium filling space 10 filled with the granular filter medium 11, and the inner filter medium 8, that is, the radial direction of the filter medium filling space 10 (in the figure). X2 direction) and purified. Then, the inside of the inner filter medium 8 is purified by flowing in the radial direction (X2 direction in the figure) of the filter medium filling space 10 in the order of the outer filter medium 9, the filter medium filling space 10 filled with the granular filter medium 11, and the inner filter medium 8. A collecting flow path 13 is provided to allow the purified water N2 to join and flow along the axial direction (X1 direction in the figure) of the filter medium filling space 10. Further, in the water purification cartridge 2, a guide flow-through portion that guides and flows the purified water N <b> 2 that has flowed through the collective flow path 13 to one end portion in the axial direction (X <b> 1 direction in the drawing) of the filter medium filling space 10. 14 is provided.

  In the water purification cartridge 2, as described above, the inner peripheral surface constituted by the inner filter medium 8 (the outer peripheral face of the inner filter medium 8) and the outer peripheral face constituted by the outer filter medium 9 (the inner peripheral face of the outer filter medium 9) In the meantime, a cylindrical filter medium filling space 10 is formed. As shown in FIG. 3A, the filter medium filling space 10 is guided at one end in the axial direction (X1 direction in the figure). It is formed in a space closed by the flow portion 14 and opened at the other end. A lid 15 for closing the filter medium filling space 10 is provided on the opening end side in the axial direction (X1 direction in the drawing) of the filter medium filling space 10 so as to be freely mounted. By attaching the lid 15, the filter medium filling space 10 can be closed while the filter medium filling space 10 is filled with the granular filter medium 11.

The lid body 15 is formed in a substantially disk shape having a circular through hole 16 formed in the center thereof. Then, as shown in FIG. 2, the inner surface of the lid 15 on the filter medium filling space 10 side in the mounted state in which the lid 15 is mounted on the opening end side in the axial direction (X1 direction in the drawing) of the filter medium filling space 10. Is provided with a non-continuous portion 17a that does not continue in the radial direction (X2 direction in the figure) of the filter medium filling space 10. A plurality of protrusions 17 are provided at regular intervals in the circumferential direction (X3 direction in the figure) of the filter medium filling space 10, and the plurality of protrusions 17 are circumferential directions of the filter medium filling space 10 (X3 direction in the figure). Are distributed.
That is, the projecting portion 17 is formed in a cylindrical shape having a curved tip at the end protruding from the inner surface portion of the lid 15 on the filter material filling space 10 side to the filter material filling space 10 side. The inner surface of the lid 15 on the filter medium filling space 10 side is formed in a flat shape in which no part other than the protrusion 17 protrudes to the filter medium filling space 10 side, and this flat part is configured as a discontinuous part 17a. ing. And the protrusion part 17 is one between the internal peripheral surface comprised by the inner side filter medium 8 and the outer peripheral surface comprised by the outer side filter medium 9 in the radial direction (X2 direction in a figure) of the filter medium filling space 10. FIG. Provided, a space between the projecting portion 17 and the inner peripheral surface constituted by the inner filter medium 8, and a space between the projecting portion 17 and the outer peripheral surface constituted by the outer filter medium 9, It is a non-continuous part 17a.

  When the lid 15 is mounted on the opening end side in the axial center direction (X1 direction in the drawing) of the filter medium filling space 10, the outer surface portion of the lid 15 on the filter medium filling space 10 side is shown in FIG. ), A circular central bulging portion 18 that bulges to the opposite side of the filter medium filling space 10 side at the center thereof, and the radial direction of the filter medium filling space 10 from the central bulging portion 18 (in the drawing) A circumferential bulging portion 19 bulging to the side opposite to the filter medium filling space 10 side in a state extending to the outer end portion in the (X2 direction) is provided. The through-hole 16 formed in the lid 15 is configured to penetrate the central bulging portion 18, but the portion penetrating the central bulging portion 18 has a smaller diameter than the portion penetrating the lid 15. It is comprised so that. A plurality of circumferential bulges 19 are provided at regular intervals in the circumferential direction (X3 direction in the figure) of the filter medium filling space 10, and the circumferential bulges in the circumferential direction (X3 direction in the figure) of the filter medium filling space 10. A space between the protruding portions 19 is formed in a flat shape that does not bulge to the side opposite to the filter medium filling space 10 side.

  A lid mounting member 20 for mounting the lid 15 is provided on the opening end side in the axial center direction (X1 direction in the drawing) of the filter medium filling space 10 in the inner filter medium 8. The lid mounting member 20 has a bottomed cylindrical shape covering the opening end side in the axial direction (X1 direction in the drawing) of the filter medium filling space 10 of the inner filter medium 8 so as to close the collecting flow path 13 of the inner filter medium 8. Is formed. That is, the cover mounting member 20 is formed in a cylindrical shape covering the outer peripheral surface of the inner filter medium 8 and a flat plate-like shape that is formed continuously with the cover part 20a and closes the collective flow path 13 of the inner filter medium 8. And an occlusion part 20b. A concave groove 21 is formed in the cover portion 20a of the lid mounting member 20, and as shown in FIG. The convex-shaped convex part 16a formed in the inner peripheral surface of this is comprised so that fitting is possible. A columnar extending portion 22 extending in the axial center direction (X1 direction in the drawing) of the filter medium filling space 10 is formed in the closed portion 20b of the lid mounting member 20.

As described above, the water purification cartridge 2 according to the present invention closes the filter medium filling space 10 filled with the granular filter medium 11 by mounting the lid 15 after the filter medium filled space 10 is filled with the granular filter medium 11. Yes.
When the particulate filter medium 11 is filled in the filter medium filling space 10, for example, as shown in FIG. 3A, the closed end side is the lower side and the open end side is the upper side in the axial direction of the filter medium filling space 10. As above, the particulate filter medium 11 is sequentially charged into the filter medium filling space 10 from above the filter medium filling space 10 and filled. At this time, for example, the filter medium filling space 10 is filled with the granular filter medium 11 while vibrating the water purification cartridge 2 using a vibrator or the like. Thus, the gap between the particulate filter media 11 is eliminated as much as possible to increase the density of the particulate filter media 11, and the particulate filter media 11 corresponding to a predetermined volume is filled.

  Thus, when the filter medium filling space 10 is filled with the granular filter medium 11, the density of the granular filter medium 11 becomes the highest on the closed end side in the axial direction (X1 direction in the figure) of the filter medium packed space 10, and the open end Since it tends to become lower as it approaches the side, there is a possibility that the density of the granular filter medium varies between the closed end side and the open end side in the axial direction (X1 direction in the figure) of the filter medium filling space 10. Therefore, the water purification cartridge 2 according to the present invention is provided with a configuration for preventing the occurrence of variations. Hereinafter, a configuration for preventing the occurrence of the variation will be described.

When the filter medium filling space 10 is filled with the granular filter medium 11, the lid 15 is pressed and moved along the axial direction (X1 direction in the figure) of the filter medium filling space 10 to thereby move the axial direction of the filter medium filling space 10 (in the figure). It is mounted on the open end side in the X1 direction). At this time, since the lid 15 is provided with the central bulging portion 18 and the peripheral bulging portion 19, for example, the central bulging portion 18 and the circumferential bulging by an operator or a lid mounting tool or the like. The lid 15 can be pressed and moved along the axial direction (X1 direction in the figure) of the filter medium filling space 10 with the portion 19 being sandwiched, and the operation of pressing and moving can be simplified.
Further, when the lid 15 is pressed and moved along the axial center direction (X1 direction in the drawing) of the filter medium filling space 10, the extending portion 22 of the lid mounting member 20 is inserted into the through hole 16 of the lid 15. Thus, the lid body 15 is configured to be freely guided so that the central axis of the lid body 15 is aligned with the central axes of the inner filter medium 8 and the outer filter medium 9. Further, the convex portion 16 a formed on the inner peripheral surface of the through-hole 16 in the lid 15 is fitted into the concave groove 21 formed in the covering portion 20 a of the lid mounting member 20, so that the filter medium filling space 10 The lid 15 is configured to be guided and movable along the axial direction (X1 direction in the drawing). In this way, the lid 15 can be guided to the appropriate mounting position at the end (the upper end in FIG. 2) of the inner filter medium 8 in the axial direction (X1 direction in the figure) of the filter medium filling space 10. The guide part K is provided, and the guide part K is constituted by the extending part 22 and the concave groove 21.

  As described above, the lid body 15 is attached to the proper attachment position by pressing and moving along the axial direction (X1 direction in the drawing) of the filter medium filling space 10. The protruding portion 17 is inserted between the granular filter media 11. Since the protrusion part 17 has the discontinuous part 17a which is not continuous in the radial direction (X2 direction in the figure) of the filter medium filling space 10, the protrusion part 17 inserted between the particulate filter mediums 11 has a periphery thereof. The lid 15 can be mounted while pressing the granular filter medium 11 present in the filter evenly. Thereby, the clearance gap between the granular filter media 11 can be eliminated, the density of the granular filter media 11 is made high, and the density of the granular filter media 11 on the opening end side in the axial direction (X1 direction in the figure) of the filter media filling space 10 is increased. Can be prevented from becoming low. As a result, it is possible to prevent variation in the density of the particulate filter medium between the closed end side and the open end side in the axial center direction (X1 direction in the drawing) of the filter medium filling space 10.

  That is, in this water purifier, as shown in FIG. 1, the entire length of the water purification cartridge 2 in the axial direction (X1 direction in the figure) of the filter medium filling space 10 is received by the outer flow path 12 with the water N1 received in the inflow portion 4. It is made to flow through. And the water N1 which flows through the outer periphery flow path 12 is the radial direction (X2 direction in the figure) of the filter medium filling space 10 in the order of the outer filter medium 9, the filter medium filling space 10 filled with the granular filter medium 11, and the inner filter medium 8. It is purified by flowing through. Thereby, the whole granular filter medium 11 with which the filter medium filling space 10 is filled can be efficiently purified and water purification performance can be improved.

  Further, as shown in FIG. 2, the lid body 15 is disposed inside the outer filter medium 9 in a state of being disposed inside the end of the outer filter medium 9 in the axial center direction (X1 direction in the drawing) of the filter medium filling space 10. It is configured to fit freely. That is, the lid 15 is guided to the proper mounting position by the guide portion K, but when the lid 15 is pressed and moved along the axial direction (X1 direction in the figure) of the filter medium filling space 10. In addition to the guidance by the guide portion K, the outer peripheral surface of the lid 15 is slidably guided by the inner peripheral surface of the outer filter medium 9, and the lid 15 is fitted to the outer filter medium 9. The lid 15 can be pressed and moved along the axial direction (X1 direction in the drawing) of the filter medium filling space 10 until it abuts against the lid mounting member 20, and the lid 15 is for lid mounting. The position where the member 20 abuts is the position where the lid 15 is pushed inwardly from the end of the outer filter medium 9 (upper end in FIG. 2) in the axial direction (X1 direction in the figure) of the filter medium filling space 10. It has become. Thereby, there is no part which the cover body 15 protrudes outside the edge part of the outer side filter medium 9 in the axial center direction (X1 direction in the figure) of the filter medium filling space 10, and the axial center direction of the filter medium filling space 10 in the water purification cartridge 2 ( The length in the X1 direction in the figure is the length of the outer filter medium 9. Therefore, in order to manufacture the length of the water purification cartridge 2 with high accuracy, it is only necessary to manufacture the length of the outer filter medium 9 with high accuracy, and the length of the water purification cartridge 2 can be reduced while simplifying the production. It can be manufactured with high accuracy. By the way, when the lid 15 is disposed inside the end of the outer filter medium 9 in the axial direction (X1 direction in the drawing) of the filter medium filling space 10, the filter medium filling space 10 of the filter medium filling space 16a is formed on the convex portion 16a of the lid 15. The length of the groove 21 along the axial direction (X1 direction in the drawing) of the filter medium filling space 10 can be adjusted so that the end of the groove 21 abuts in the axial direction (X1 direction in the drawing). Thereby, the end of the outer filter medium 9 in the axial direction (X1 direction in the figure) of the filter medium filling space 10 can be adjusted by adjusting the length of the concave groove 21 along the axial direction (X1 direction in the figure) of the filter medium filling space 10. The lid 15 can be arranged inside the portion.

  When the lid 15 is mounted at an appropriate mounting position, the outer peripheral surface of the lid 15 and the outer filter medium 9 are filled by filling hot melt resin between the outer peripheral surface of the lid 15 and the inner peripheral surface of the outer filter medium 9. The lid 15 is fixed to an appropriate mounting position by heat-welding the inner peripheral surface.

[Second Embodiment]
This 2nd Embodiment is another embodiment of the cover body 15 in the said 1st Embodiment, About another structure, it is the same as that of the said 1st Embodiment. Hereinafter, based on FIG. 4, it demonstrates centering on the cover body 23 in 2nd Embodiment, and abbreviate | omits description about another structure.

As shown in FIG. 4, the lid body 23 is formed in a substantially disc shape, and in the mounted state in which the lid body 23 is mounted on the opening end side in the axial direction (X1 direction in the drawing) of the filter medium filling space 10, On the inner surface of the lid 23 on the filter medium filling space 10 side, as in the first embodiment, a protruding portion 24 protruding toward the filter medium filling space 10 is provided in the radial direction (X2 direction in the drawing) of the filter medium filling space 10. It is provided with a non-continuous non-continuous portion 24a. Unlike the first embodiment, the protrusions 24 are provided so as to continue in series over the entire length of the filter medium filling space 10 in the circumferential direction (X3 direction in the drawing).
That is, the protrusion 24 is formed in a mountain shape protruding from the inner surface of the lid 23 on the filter medium filling space 10 side to the filter medium filling space 10 side, and the inner surface of the lid 23 on the filter medium filling space 10 side is formed as a protrusion. Parts other than 24 are formed in a flat shape that does not protrude toward the filter medium filling space 10, and this flat part is configured as a discontinuous part 24 a. And the protrusion part 24 is one between the internal peripheral surface comprised by the inner side filter medium 8 and the outer peripheral surface comprised by the outer side filter medium 9 in the radial direction (X2 direction in a figure) of the filter medium filling space 10. FIG. Provided, a space between the projecting portion 24 and the inner peripheral surface constituted by the inner filter medium 8, and a space between the projecting portion 24 and the outer peripheral surface constituted by the outer filter medium 9, It is a non-continuous part 24a.

  When the lid body 23 is attached to the opening end side in the axial direction (X1 direction in the drawing) of the filter medium filling space 10, the lid body 23 is rotated on the outer surface portion of the lid body 23 on the filter medium filling space 10 side. There is provided a fitting portion P into which a rotating tool can be fitted. That is, the fitting part P is composed of a pair of semicircular bulging parts that bulge from the outer surface part of the lid body 23 on the filter medium filling space 10 side, and a minus driver is interposed between the pair of bulging parts. A rotating tool or the like is configured to be freely fitted.

  Similarly to the first embodiment, the lid mounting member 25 for mounting the lid 23 on the opening end side in the axial direction (X1 direction in the figure) of the filter medium filling space 10 in the inner filter media 8. Is provided. Similarly to the first embodiment, the lid mounting member 25 is formed continuously with the cylindrical cover portion 25a covering the outer peripheral surface of the inner filter medium 8 and the cover portion 25a, and the collective flow path of the inner filter medium 8 And a plate-like closed portion 25 b that closes 13. The covering member 25 a of the cover mounting member 25 has a mounting member-side screw portion 26 formed on the outer periphery thereof. The lid 23 is screwed with respect to the mounting member-side screw portion 26. A lid body side screw portion 27 which can be freely combined is formed.

The mounting of the lid body 23 in the second embodiment will be described.
When the particulate filter medium 11 is filled in the filter medium filling space 10, the mounting member side screw part 26 and the lid body side screw part 27 are screwed together with the fitting part P fitted with a rotary tool such as a flathead screwdriver. By rotating the lid body 23, the cover body 23 is mounted on the opening end side in the axial direction (X1 direction in the drawing) of the filter medium filling space 10. At this time, since the mounting member side screw portion 26 and the lid body side screw portion 27 are screwed together, the lid body 23 is guided to an appropriate mounting position by the screwing, and the mounting member side screw portion 26 is It is configured as a guide part K.

  In this way, the lid body 23 is mounted at the proper mounting position. At this time, the protruding portion 24 continuously extends over the entire length in the circumferential direction (X3 direction in the figure) of the filter medium filling space 10. And inserted between the particulate filter media 11. Since the protrusion 24 has a discontinuous portion 24a that is not continuous in the radial direction (X2 direction in the drawing) of the filter medium filling space 10, the protrusion 24 inserted between the particulate filter media 11 is surrounded by The lid 23 can be attached while pressing the granular filter medium 11 present in the evenly. Thereby, the clearance gap between the granular filter media 11 can be eliminated, the density of the granular filter media 11 is made high, and the density of the granular filter media 11 on the opening end side in the axial direction (X1 direction in the figure) of the filter media filling space 10 is increased. Can be prevented from becoming low.

  Similarly to the first embodiment, the lid 23 is disposed inside the end of the outer filter medium 9 in the axial center direction (X1 direction in the drawing) of the filter medium filling space 10, and the outer filter medium 9 It is configured so that it can be fitted inside. That is, the lid 23 is guided to an appropriate mounting position by screwing the mounting member-side screw portion 26 and the lid-side screw portion 27, but the mounting member-side screw portion 26 and the lid-side screw portion. In addition to the guide by screwing with 27, the outer peripheral surface of the lid body 23 is slidably guided to the inner peripheral surface of the outer filter medium 9, so that the lid body 23 is in the axial direction (X1 direction in the figure) of the filter medium filling space 10 ) Is fitted inside the end of the outer filter medium 9. Thereby, there is no part which the cover body 23 protrudes outside the edge part of the outer side filter medium 9 in the axial center direction (X1 direction in the figure) of the filter medium filling space 10, and the axial center direction of the filter medium filling space 10 in the water purification cartridge 2 ( The length in the X1 direction in the figure is the length of the outer filter medium 9.

  When the lid body 23 is mounted at the proper mounting position, the outer peripheral surface of the lid body 23 and the outer filter medium 9 are filled by filling hot melt resin between the outer peripheral surface of the lid body 23 and the inner peripheral surface of the outer filter medium 9. The lid 23 is fixed to an appropriate mounting position by heat welding the inner peripheral surface of the cover 23.

  In the second embodiment, the shape of the protrusion 24 can be formed in a columnar shape as shown in FIG. Further, as shown in FIG. 6, in the radial direction of the filter medium filling space 10 (X2 direction in the figure), it protrudes at a part adjacent to the outer peripheral part of the inner filter medium 8 and a part adjacent to the inner peripheral part of the outer filter medium 9, And the protrusion part 24 can also be formed in the V shape which makes the discontinuous part 24b between the protrusion parts. Here, in FIG. 6, in addition to the lid body 23, a second lid body 28 that can be mounted on the opening end side in the axial direction (X1 direction in the drawing) of the filter medium filling space 10 is provided. By providing the second lid 28, the strength on the opening end side in the axial direction (X1 direction in the drawing) of the filter medium filling space 10 can be further strengthened. And about this 2nd cover body 28, in addition to the cover bodies 15 and 23, the 2nd cover body 28 can be provided also about what was shown in the said 1st Embodiment and FIG.4 and FIG.5.

(Evaluation of water purification cartridge according to the present invention)
As described above, in the first embodiment and the second embodiment, the lids 15 and 23 are provided with the protrusions 17 and 24. However, the water purification cartridge in the first embodiment and the water purification cartridge in the second embodiment are provided. An experiment for confirming the water purification performance was performed, and the experimental results are shown in FIG. And in order to compare the quality of the water purification performance of the water purification cartridge in the first embodiment and the water purification cartridge in the second embodiment, as a comparative example, the lids 15 and 23 are not provided with the protrusions 17 and 24, The same experiment was performed on the lids 15 and 23 having the inner surface portion on the filter medium filling space 10 side formed in a flat shape, and the experimental results are also shown in FIG.

  Here, as an experiment for confirming the water purification performance, it is assumed that it conforms to the test method: JIS S 3201 “Household water purifier test method (continuous method)”. Test water adjusted to a chloroform concentration (Co) of 60 ± 12 ppb was passed through the test body under the conditions of 2 liters / min, faucet pressure 0.045 Mpa, water temperature 20.4 ° C., and at the water inlet of the test body. The removal rate was measured by measuring the chloroform concentration and the chloroform concentration at the outlet.

  As shown in FIG. 7, in the comparative example, the removal rate decreases as the water flow rate increases, and when the water flow rate reaches 1200 liters, the removal rate decreases to 71%. On the other hand, in the water purification cartridge according to the first embodiment and the second embodiment of the present invention, the removal rate is 80% or more even when the water flow rate is 1200 liters. Thereby, in the water purification cartridge in 1st Embodiment and 2nd Embodiment which concern on this invention, it turns out that the adsorption | suction performance excellent in the long term is maintained. Therefore, in the water purification cartridge in 1st Embodiment and 2nd Embodiment which concern on this invention, water purification performance can be improved.

[Another embodiment]
(1) In the first and second embodiments, the faucet type water purifier is provided in the water faucet body 1 with the purified water cartridge 2. However, for example, a counter top type water purifier that can be installed in a kitchen counter or the like. Various types of water purifiers can be applied.

(2) In the first embodiment, an example in which the guide portion K that can guide the lid 15 to the proper mounting position is configured by the extending portion 22 and the recessed groove 21 has been described. It can also carry out by providing the concave groove 21 without providing the part 22, and the guide part K can also be comprised only from the concave groove 21 in this case.

  In the present invention, one end portion in the axial direction is closed and the other end portion is opened between the inner peripheral surface constituted by the cylindrical inner filter medium and the outer peripheral surface constituted by the cylindrical outer filter medium. The cylindrical filter medium filling space is formed, and the filter medium filling space is filled with the granular filter medium, and the density of the granular filter medium on the opening end side in the axial direction of the filter medium filling space is prevented, and the filter medium filling space It is possible to efficiently use the entire granular filter medium packed in the water, and to adapt to various water purification cartridges that can improve the water purification performance and water purifiers that include the water purification cartridge.

2 Water purification cartridge 8 Inner filter medium 9 Outer filter medium 10 Filter medium filling space 11 Granular filter medium 12 Peripheral flow path 13 Collecting flow path 15 Lid 17 Protruding part 17a Non-continuous part 23 Lid 24 Protruding part 24a Non-continuous part K Guide part

Claims (6)

A cylindrical shape in which one end in the axial direction is closed and the other end is opened between an inner peripheral surface constituted by a cylindrical inner filter medium and an outer peripheral surface constituted by a cylindrical outer filter medium. A filter medium filling space is formed, and the filter medium filling space is filled with particulate filter medium,
A lid for closing the filter medium filling space is provided so as to be attachable to an opening end side in the axial direction of the filter medium filling space, and the lid is opened in the axial direction of the filter medium filling space. A water purification cartridge provided with a discontinuous portion in which a protruding portion protruding toward the filter medium filling space is not continuous in a radial direction of the filter medium filling space when mounted on the end side.   The purified water according to claim 1, wherein the lid is configured to be fitted and fitted to the outer filter medium in a state of being disposed inside an end portion of the outer filter medium in an axial direction of the filter medium filling space. cartridge.   The water purification cartridge according to claim 1, wherein a plurality of the protrusions are provided in a distributed manner in a circumferential direction of the filter material filling space.   The water purification cartridge according to claim 1 or 2, wherein the protrusion is provided so as to be continuous in series over the entire length in the circumferential direction of the filter medium filling space.   The purified water according to any one of claims 1 to 4, wherein a guide portion is provided at an end portion of the inner filter medium in an axial direction of the filter medium filling space so that the lid body can be guided to an appropriate mounting position. cartridge.   The water purification cartridge according to any one of claims 1 to 5, wherein water received in an inflow portion is disposed outside the water purification cartridge in a radial direction of the filter medium filling space in an axial direction of the filter medium filling space. An outer peripheral flow path that is freely flowable over the entire length of the cartridge is provided, and water flowing through the outer peripheral flow path is passed from the outer peripheral flow path to the collective flow path inside the inner filter medium in the radial direction of the filter medium filling space. A water purifier that can be purified by passing it through.

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