JP2009154128A - Water purifying cartridge, and water purifier provided therewith - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water purifying cartridge where the accumulation of air in the lower face of a sheet material for suppressing the release of a granular adsorbent from an adsorption water-purifying part is evaded, and the reduction of the flow rate of a water purifying cartridge can be evaded, and to provide a water purifier provided therewith. <P>SOLUTION: The water purifying cartridge 1 is provided with an adsorption water-purifying part 2 purifying raw water by the adsorption action of a granular adsorbent charged inside a cartridge vessel 28, and is mounted between a raw water storage part at the upper part of a water purifier 50 and a purified water storage part at the lower part thereof, so as to pass the raw water through the adsorption water-purifying part 2 by gravity. A deformable sheet material 30 is arranged inside the cartridge vessel 28 so as to cover the upper end of the adsorption water-purifying part 2. The ends of the sheet material 30 are fixed to the cartridge vessel 28 with a part thereof left, and further, a communication passage 40 communicating with the upper part of the adsorption water-purifying part 2 is made freely opened/closed at the non-fixed end part 31 of a part of the sheet material 30. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a water purification cartridge and a water purifier provided with the same.

  Conventionally, the purified water unit 2 is provided with an adsorption water purification unit 2 in which a cartridge container 28 is filled with a granular adsorbent, and the raw water is passed through the adsorption water purification unit 2 by its own weight so that the raw water can be purified by the adsorption action of the adsorbent. The cartridge 1 is known as disclosed in Patent Document 1, for example. In this water purification cartridge 1, as shown in FIG. 5, the sheet material 30 is fixed and arranged so as to cover the upper part of the adsorption water purification unit 2, and the granular adsorbent leaks from the adsorption water purification unit 2 by this sheet material 30. There is no way. The sheet material 30 is provided with a large number of fine holes so that the adsorbent cannot pass through, and has air permeability and water permeability, allowing raw water to pass through the sheet material 30 and flowing down to the adsorption water purification unit 2. It is.

  By the way, when raw water immerses the adsorbed water purification unit 2, air often remains in the adsorbent water purification unit 2, for example, air remains between the fine particle gaps of the adsorbent. There is a problem that air bubbles are accumulated on the lower surface of the sheet material 30 to prevent the raw water from being introduced into the adsorption water purification unit 2, thereby reducing the flow rate of the water purification cartridge 1.

In Patent Document 1, in order to cope with this problem, the sheet material 30 is brought into close contact with the adsorbent so as not to create a space for generating air pockets on the lower surface of the sheet material 30. 2, the contact state between the sheet material 30 and the adsorbent is gradually damaged due to the adsorbent being swept away when the raw water passes through the water 2, and the occurrence of air pockets is unavoidable. It has not yet been resolved.
Japanese Patent Laid-Open No. 10-76253

  The present invention has been made in view of the above points, and its object is to prevent air from accumulating on the lower surface of the sheet material for suppressing the escape of the granular adsorbent from the adsorption water purification unit. Another object of the present invention is to provide a water purification cartridge capable of avoiding a decrease in the flow rate of the water purification cartridge, and a water purifier using the same.

  In order to solve the above-described problems, the water purification cartridge 1 according to the present invention includes the adsorption water purification unit 2 that purifies raw water by the adsorption action of the granular adsorbent filled in the cartridge container 28, and includes a water purifier 50. The purified water cartridge 1 is mounted between the upper raw water storage section and the lower purified water storage section and allows the raw water to pass through the adsorption purified water section 2 by its own weight. It arrange | positions so that the upper end of the adsorption | suction water purification part 2 may be covered, and it adsorb | sucks by the non-fixing edge part 31 of the said some sheet | seat material 30 while fixing the edge of the sheet | seat material 30 to the cartridge container 28 leaving the part. The communication path 40 communicating with the upper part of the water purification unit 2 is made openable and closable.

  According to this, when the raw water flows into the adsorption water purification unit 2 by its own weight, the raw water passes through the communication passage 40 opened by deforming the non-fixed end edge 31 of the sheet material 30 by pushing it downward. At this time, the air that remains in the adsorbed water purification unit 2 and floats can escape from the adsorbed water purification unit 2 through the open communication path 40, that is, the air accumulates on the lower surface of the sheet material 30. This can be avoided, and a decrease in the flow rate of the water purification cartridge 1 can be avoided.

  It is also preferable that the sheet material 30 has water permeability. According to this, when the raw water flows into the adsorption water purification unit 2 by its own weight, the raw water is added to the communication path 40 that is opened by deforming the non-fixed edge 31 of the sheet material 30 by flowing downward, Since it can be made to flow to the adsorbing water purification unit 2 through the sheet material 30 itself, the water purification cartridge 1 can be provided with good flow rate performance. Further, the raw water can be passed through the site of the adsorbed water purification unit 2 directly below the sheet material 30 and the adsorbent of the adsorbed water purification unit 2 can be used without any bias in the purification of the raw water.

  In addition, it is also preferable to include a restricting portion 35 that restricts the upward turning deformation of the non-fixed end edge portion 31 of the sheet material 30 and ensures the closed state of the communication path 40. According to this, when the water purification cartridge 1 is not passing water, the restriction portion 35 prevents the non-fixed end edge portion 31 of the sheet material 30 from turning up and opening the communication path 40. It is possible to prevent the particulate adsorbent from spilling out from the open communication passage 40.

  In this invention, it has the advantage that it can avoid that air accumulates on the lower surface of the sheet | seat material for suppressing the spill from the adsorption | suction water purification part of a granular adsorbent, and the flow volume fall of a water purification cartridge can be avoided.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  2 and 3 show an example water purifier 50 in the embodiment of the present invention.

  The water purifier 50 of this example is a so-called pot-type water purifier 50, which supplies raw water such as tap water and temporarily stores it, and a water purification cartridge 1 attached to the bottom of the raw water storage 51. And the raw water storage unit 51 and the purified water storage unit 52 located below the purified water cartridge 1, and the raw water stored in the raw water storage unit 51 passes through the purified water cartridge 1 by its own weight and passes through the purified water storage unit 52. When flowing down to the inside, the raw water is purified in the water purification cartridge 1.

  The water purifier 50 includes a bottomed cylindrical outer container 53 whose upper end is opened, and a bottomed cylindrical inner container which is inserted from the upper end opening of the outer container 53 and disposed in the outer container 53. 54. The inner container 54 is formed with a depth of about half or less than that of the outer container 53, and the inner container 54 is fitted to the upper half of the outer container 53 without a gap at a portion excluding the predetermined gap 55. The raw water storage part 51 is formed in the vessel 54, and the purified water storage part 52 is formed between the bottom wall 54 a of the inner container 54 and the bottom wall 53 a of the outer container 53. The said clearance gap 55 is formed so that it may extend upwards from the purified water storage part 52, and functions as a pouring path at the time of pouring purified water.

  An upper lid portion 56 is fitted and fixed to the upper end opening of the inner container 54. A water supply port 57 is opened at the center of the upper lid portion 56, and a flap 58 is provided to close the water supply port 57 from above. A shaft hole 59 is formed in the rear end portion of the flap 58, and a cylindrical shaft 60 installed behind the water supply port 57 in the upper lid portion 56 is rotatably fitted in the shaft hole 59. By doing so, the flap 58 can be freely opened and closed with respect to the water supply port 57.

  Here, the front-rear direction means that the side where the gap 55 forming the pouring path is located is the front. Accordingly, the spout 55a formed at the upper end of the gap 55 is located in front of the water supply port 57, and the shaft 60 is located on the opposite side of the water supply port 57 from the spout 55a. The pour spout 55a is provided with a pour lid 61 that can be freely opened and closed.

  The bottom surface of the raw water storage part 51 is formed so as to be gently downwardly inclined toward the lowermost part 51a, and the water purification cartridge 1 is provided with a mounting concave step part that is further recessed downward from the lowermost part 51a of the raw water storage part 51. It is fitted into 62 and fitted from above. The center of the bottom of the mounting concave step 62 is opened, and the raw water is stored through the mounting concave step 62 and the opening at the bottom thereof (that is, via the water purification cartridge 1 mounted in the mounting concave step 62). It is the structure where the part 51 and the purified water storage part 52 located under this communicate.

  The water purification cartridge 1 is configured by housing the water purification unit 4 in a cartridge container 28. The water purification unit 4 includes an upstream-side adsorption water purification unit 2 that purifies raw water by an adsorption action of a granular adsorbent (not shown), and raw water that has passed through the adsorption water purification part 2 by a filtration body (not shown). It is comprised with the downstream filtration water purification part 3 which further purifies. That is, the raw water in the raw water storage unit 51 is introduced into the water purification unit 4 from the raw water introduction port 17 provided in the upper part of the cartridge container 28, and flows down the adsorption water purification unit 2 and the filtered water purification unit 3 constituting the water purification unit 4 in order. The purified water is sequentially purified to produce purified water, and the purified water is discharged into the purified water storage section 52 from the purified water discharge port 9 provided at the lower end of the cartridge container 28. In addition, the mineral component of the mineral agent (not shown) with which the inside is filled is added in the main stream of the raw | natural water which flows through the inside of the water purification part 4 above the water purification part 4 in the water purification cartridge 1 of this example. A mineral addition unit 5 is provided.

  Specifically, the water purification unit 4 formed in the lower half of the water purification cartridge 1 is formed by filling a filter body such as a hollow fiber membrane into a cylindrical filtration container 6 having upper and lower ends opened to form a filtration water purification unit 3. The lower end portion of the filtration container 6 is formed on the outer peripheral surface of the adsorption vessel 7 having a bottomed cylindrical shape with an open upper end and a step portion 8 extending one step lower from the center of the bottom portion 7b. It is fitted through an O-ring 11 provided on the inner wall, and further, an adsorbed water purification unit is filled by filling a granular adsorbent such as activated carbon between the peripheral wall of the inner filtration container 6 and the outer wall of the outer adsorption container 7. 2 is formed. At the upper end of the adsorption water purification unit 2, a flexible sheet is provided so as to cover the adsorption water purification unit 2 so that the filled granular adsorbent does not escape upward from between the adsorption vessel 7 and the filtration vessel 6. A material 30 is arranged. The cartridge container 28 includes the adsorption container 7 that forms the outer shell of the water purification cartridge 1, the upper cover 16 that will be described later, the filtration container 6 that is housed in the outer shell, and the mineral container 15 that will be described later. The

  In the center of the bottom wall of the stepped portion 8, a purified water discharge port 9 that is vertically opposed to the lower end opening of the filtration container 6 fitted to the stepped portion 8 through a predetermined space is opened. A rib-like locking projection 10 is protruded inwardly at the lower end of the peripheral wall of the step portion 8, and the locking projection 10 contacts the lower end surface of the filtration container 6, thereby fitting into the step portion 8. The predetermined space between the lower end of the filtration container 6 and the purified water discharge port 9 is defined. A plurality of slit-like air vent holes 12 having a horizontal direction as a longitudinal direction are provided in the peripheral wall of the step portion 8 so as to be the same height as the lower end of the filtration container 6. The structure is such that the air accumulated between the stepped portion 8 escapes to the purified water storage portion 52 side through the side air vent hole 12.

  Further, the partition wall 13 formed of the peripheral wall of the filtration container 6 has a communication hole through which the central filtration water purification unit 3 arranged in parallel in the horizontal direction via the partition wall 13 and the adsorbing water purification unit 2 on the outer peripheral side surrounding the central filtration water purification unit 3 are communicated. A plurality of 14 are provided. The communication hole 14 is formed in a slit shape with the horizontal direction as the longitudinal direction, and is flush with the lower end of the adsorption water purification unit 2 in a state where the filtration container 6 is fitted in the stepped portion 8. Provided. In the illustrated example, two rows of upper and lower communication holes 14 are provided, one row at the same height as the lower end of the adsorption water purification unit 2 and one row at a height slightly above the lower end of the adsorption water purification unit 2. The width of each communication hole 14 is provided smaller than the diameter of the adsorbent filled in the adsorption water purification unit 2.

  The mineral addition part 5 formed in the upper half part of the water purification cartridge 1 has a bottomed cylindrical shape with an open upper end, and a mineral container 15 provided with a recessed step part 15a extending upward at the center of the outer bottom surface. The upper end of the filtration container 6 is fitted and locked in the concave step portion 15a, and a granular mineral agent such as a calcium agent is placed in the mineral container 15 placed on the filtration container 6 by the fitting and locking. Furthermore, a cap-shaped upper cover 16 having an open lower end is covered from above the mineral container 15, and the lower end opening edge 16 a of the upper cover 16 is engaged with the upper end opening edge 7 a of the adsorption container 7. Formed with. Here, the upper end opening edge of the mineral container 15 is in close contact with the inner peripheral surface of the upper cover 16, and the space surrounded by the mineral container 15 and the upper cover 16 is the mineral addition unit 5.

  A plurality of small-diameter raw water inlets 17 are opened over the entire circumference of the peripheral wall of the upper cover 16 and located on the side of the mineral container 15, and the purified water cartridge 1 is passed through these raw water inlets 17. It is a structure where raw water is introduced. In addition, a filtration unit-side exhaust port 18 is formed through the top portion of the upper cover 16 and directly above the filtered water purification unit 3 in the filtration container 6 in the vertical direction. From the center of the bottom surface of the concave step portion 15a that passes above the mineral container 15, an elongated pipe-like air vent path 19 that extends upward through a portion of the mineral container 15 containing the mineral agent is extended. The upper end opening of the air vent channel 19 is connected to the filtration unit side exhaust port 18 of the upper cover 16 in communication. That is, the filtered water purification unit 3 in the filtration container 6 connected to the concave step portion 15a of the mineral container 15 is connected to the upper raw water storage unit 51 through the air vent channel 19 and the filtration unit side exhaust port 18. is there.

  In addition, a large number of slit-like mineral elution holes 20 are formed in the outer peripheral wall of the mineral container 15. The mineral elution hole 20 forms a flow path that connects the mineral addition section 5 that is a space in the mineral container 15 and the adsorption water purification section 2 that is a space in the adsorption container 7. Further, a plurality of cutouts 21 recessed downward are provided at the upper end edge of the peripheral wall of the mineral container 15 at intervals in the circumferential direction, and the upper end opening edge of the mineral container 15 is in close contact with the inner surface of the upper cover 16. Sometimes, each notch 21 forms an air introduction hole 22 that communicates the mineral addition part 5 and the adsorbed water purification part 2 separately from the mineral elution hole 20 below. The widths of the mineral elution holes 20 and the air introduction holes 22 are set smaller than the diameter of the mineral agent to be filled.

  Here, at the top of the upper cover 16 and surrounding the filtration unit side exhaust port 18, a plurality of exhaust ports 23 are bored in the vertical direction separately from the filtration unit side exhaust port 18 at equal intervals in the circumferential direction. Has been established. The exhaust port 23 is used to discharge bubbles generated in the mineral addition unit 5 to the outside of the cartridge, and also serves as an adsorption unit side exhaust port 24 for discharging bubbles generated in the adsorption water purification unit 2 to the outside of the cartridge. It is. A plurality of projecting portions 25 extend inwardly (that is, downward) at equal intervals in the circumferential direction of the exhaust port 23 from the top portion of the upper cover 16 and surrounding each exhaust port 23. The mineral agent filled in the mineral addition part 5 is prevented from clogging each exhaust port 23.

  When the water purification cartridge 1 having the above configuration is attached to the water purifier 50, the lower half portion where the water purification unit 4 of the water purification cartridge 1 is formed is placed in the mounting concave step 62 that is recessed downward from the raw water storage unit 51. The upper half forming the mineral addition part 5 of the water purification cartridge 1 is positioned above the lowermost part 51a of the raw water storage part 51. At this time, it is adsorbed through the opening at the bottom center of the mounting concave part 62. The purified water discharge port 9 of the step part 8 of the container 7 and the lower end part of the filtration container 6 located in the step part 8 protrude toward the lower purified water storage part 52 side.

  An elastically deformable convex portion 26 formed in a convex shape toward the outer side is integrally formed on the peripheral wall of the adsorption container 7 over the entire circumference, and the convex portion 26 is attached over the entire circumference. By making elastic contact with the inner peripheral surface of the concave step portion 62, the peripheral wall of the adsorption container 7 and the mounting concave step portion 62 are brought into close contact with each other. Further, an O-ring 27 is fitted into the groove on the outer peripheral surface of the step portion 8 of the adsorption container 7, and the step portion 8 and the mounting concave step portion 62 are brought into close contact with each other through the O-ring 27.

  And when it is going to obtain purified water using the water purifier 50 of this example provided with the water purification cartridge 1 which consists of the said structure, it is based on the following procedures. That is, first, the flap 58 of the upper lid part 56 is rotated upward to open the water supply port 57, and raw water such as tap water is supplied into the raw water storage unit 51 through the water supply port 57. The supplied raw water is temporarily stored in the raw water storage section 51 and is introduced into the water purification cartridge 1 through a large number of raw water inlets 17 of the upper cover 16, and the adsorbed water purification section 2 and the filtered water purification section 3 communicating therewith The raw water is filled into the mineral addition part 5.

  Here, the main flow path in which the raw water flows down to the purified water storage section 52 through the purified water cartridge 1 due to its own weight is temporarily accumulated in the adsorbed water purification section 2 after flowing down from the raw water inlet 17 and the adsorbing action of the adsorbent. After being purified by the above, the turbid component is further introduced by the filtering action of the filter body introduced into the filtered water purification unit 3 through the communication hole 14 communicating with the lower end of the adsorption water purification unit 2 and filled in the filtered water purification unit 3. After being filtered and purified, the flow path sequentially flows into the purified water storage portion 52 below through the purified water discharge port 9 opened at the lowermost end of the purified water cartridge 1. In the process of passing through the main flow path, water purification by adsorption and filtration is performed.

  Then, from the mineral addition unit 5 to the main channel, high mineral water obtained by eluting the mineral component of the mineral agent into the raw water filled in the mineral addition unit 5 is sequentially supplied through the mineral elution hole 20. It will be supplied. That is, the raw water passing through the water purification cartridge 1 is subjected to water purification by an adsorption action and a filtration action, and a mineral component is added thereto.

  By the way, in the water purification cartridge 1 of this example, it avoids that air accumulates on the lower surface of the sheet | seat material 30 for suppressing escape from the adsorption water purification part 2 of a granular adsorbent, and avoids the flow volume fall of the water purification cartridge 1. The idea to do is given. That is, as shown in FIG. 1, a hollow and deformable sheet material is used for the sheet material 30 covering the upper end of the adsorption water purification unit 2, and the edge of the sheet material 30 is fixed to the cartridge container 28 leaving a part thereof. In addition, the communication passage 40 communicating with the upper part of the adsorption water purification unit 2 at the non-fixed end edge 31 of the part of the sheet material 30 is made openable and closable.

  Specifically, the sheet material 30 of this example is formed in a circular belt-like flat plate shape having a hollow portion at the center, and the upper end portion of the inner surface of the adsorption container 7 and the outer surface of the peripheral wall of the filtration container 6 opposed thereto. It is arranged so as to close the space. A projecting sheet fixing portion 34 projects from the outer surface of the peripheral wall of the filtration container 6 facing the upper end of the inner surface of the adsorption container 7 over the peripheral surface. The edge portion 32 is fixed to the sheet fixing portion 34. On the other hand, the outer edge portion 33 of the sheet material 30 is in an unfixed free state, and constitutes the non-fixed edge portion 31.

  Here, when the water is passed through the water purification cartridge 1 and the raw water flows into the adsorption water purification unit 2 by its own weight, the raw water pushes the non-fixed edge 31 of the sheet material 30 downward by the head pressure and deforms it. A gap-shaped communication path 40 is formed between the non-fixed end edge 31 of the sheet material 30 and the adsorption container 7 (that is, an open communication path 40 is formed). After that, it flows into the adsorption water purification unit 2 (solid arrow in the figure). At this time, the air that remains and floats in the adsorption water purification unit 2 passes upward from the adsorption water purification unit 2 via the open communication path 40, and the raw water introduction port 17, the air introduction hole 22, or the mineral elution hole 20. Through the exhaust port 23, it comes out of the water purification cartridge 1 (dotted line arrow in the figure). That is, the flow of raw water into the adsorption water purification unit 2 and the discharge of air from the adsorption water purification unit 2 are performed simultaneously and smoothly via the open communication passage 40 communicating with the upper part of the adsorption water purification unit 2. In addition, the air remaining in the adsorbing water purification unit 2 is avoided from being accumulated on the lower surface of the sheet material 30, and the flow rate of the water purification cartridge 1 is avoided. Is realized.

  More specifically, as the sheet material 30, a foam sheet such as felt, non-woven fabric, or sponge can be suitably used. Although the sheet material 30 can be flexibly deformed, the sheet material 30 has a self-retaining property that does not deform from a flat plate shape by its own weight ( Elasticity). Therefore, when the water purification cartridge 1 does not pass water, the sheet material 30 holds a substantially flat plate shape (the sheet material 30 shown by a broken line in the figure) and faces the upper end portion of the inner surface of the adsorption container 7. The particulate adsorbent in the adsorbing water purification unit 2 spills upward from the adsorbing water purification unit 2 because the space between the outer peripheral wall of the filtration container 6 is blocked (that is, the communication path 40 is closed). There is no such thing.

  Furthermore, in this example, a restriction portion 35 is provided that restricts the upward turning deformation of the non-fixed end edge portion 31 of the sheet material 30 to secure the closed communication path 40. The restricting portion 35 of the present example is configured such that the inner diameter of the lower end opening edge 16a of the upper cover 16 engaged with the upper end opening edge 7a of the adsorption container 7 is smaller than the inner diameter of the upper end opening edge 7a of the adsorption container 7. It is comprised by the step part 29 formed. The step portion 29 is positioned directly above the non-fixed end edge portion 31 of the sheet material 30 having a flat plate shape. Therefore, in this example, when the water purification cartridge 1 is not passing water, the non-fixed edge 31 of the sheet material 30 is turned up to open the communication path 40. In addition to the shape retention (elasticity), it is also prevented by the regulation part 35, and the particulate adsorbent is effectively prevented from spilling out from the adsorption water purification part 2. Furthermore, according to this regulation part 35, when a backflow is unexpectedly generated in the communication passage 40 due to turbulence of the raw water flowing through the adsorption water purification part 2, the non-fixed edge part of the sheet material 30 is pushed up by the backflow. It is also possible to prevent the 31 from turning upward and to prevent the particulate adsorbent from spilling upward from the adsorbed water purification unit 2 together with the backflow.

  FIG. 4 shows another example of the water purification cartridge 1. The water purification cartridge 1 of this example can also be used for the water purifier 50 of FIGS. 2 and 3, and is different from the previous example only in the structure for fixing the sheet material 30 to the cartridge container 28. Accordingly, the same parts as those in the previous example are denoted by the same reference numerals, and the description thereof will be omitted, and only different parts will be described.

  The sheet material 30 of the present example is fixed to the cartridge container 28 because the outer edge 33 thereof is sandwiched between the upper end opening edge 7a of the suction container 7 to be engaged and the lower end opening edge 16a of the upper cover 16. Has been. That is, the upper end opening edge 7 a of the adsorption container 7 and the lower end opening edge 16 a of the upper cover 16 constitute the sheet fixing portion 34. The inner edge portion 32 of the sheet material 30 is in a non-fixed free state and constitutes the non-fixed edge portion 31. When the water purification cartridge 1 is passed through the raw water and deformed, A gap-shaped communication path 40 is formed between the fixed edge 31 and the filtration container 6. In addition, the bottom face of the mineral container 15 is located above the non-fixed end edge portion 31 of the sheet material 30 having a flat plate shape, and constitutes a regulating portion 35.

  In this example, the same operational effects as the previous example can be obtained. In addition, in this example, the upper end opening edge 7a of the suction container 7 included in the original cartridge container 28 and the lower end opening edge 16a of the upper cover 16 are used as the sheet fixing portion 34 of the sheet material 30, that is, as in the previous example. In addition, it is not necessary to newly form a portion such as the protruding sheet fixing portion 34 used only for fixing the sheet material 30 in the cartridge container 28, and a simple configuration can be made by using the configuration originally in the water purification cartridge 1. It also has the advantage that it can be secured.

  Moreover, although the example which used the non-water-permeable sheet | seat for the sheet | seat material 30 was shown in the said embodiment, it is preferable to equip the said sheet | seat material 30 with water permeability. According to this, when the raw water flows into the adsorption water purification unit 2 by its own weight, the raw water is added to the communication path 40 that is opened by deforming the non-fixed edge 31 of the sheet material 30 by flowing downward, It can be made to flow to the adsorption water purification unit 2 through the sheet material 30 itself, and the flow rate performance of the water purification cartridge 1 can be improved, and the raw water is also passed through the portion of the adsorption water purification unit 2 directly below the sheet material 30. Therefore, there is also an advantage that the adsorbent of the adsorption water purification unit 2 can be used without any bias to the raw water purification.

It is a sectional side view of the water purification cartridge of the example of embodiment of this invention. It is side sectional drawing of the water purifier provided with the water purification cartridge same as the above. It is a disassembled perspective view of a water purifier same as the above. It is side sectional drawing of the water purification cartridge of the other example of embodiment of this invention. It is a sectional side view of the water purification cartridge of the example of a prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water purification cartridge 2 Adsorption water purification part 3 Filtration water purification part 4 Water purification part 5 Mineral addition part 6 Filtration container 7 Adsorption container 28 Cartridge container 30 Sheet material 31 Non-fixed edge part 34 Sheet fixing part 35 Control part 40 Communication path 50 Water purifier

Claims (4)

  It has an adsorption water purification unit that purifies raw water by adsorbing the granular adsorbent filled in the cartridge container, and is installed between the raw water storage unit at the upper part of the water purifier and the purified water storage part at the lower part to adsorb the raw water. A water purification cartridge that passes through the water purification section under its own weight, wherein the deformable sheet material is arranged in the cartridge container so as to cover the upper end of the adsorption water purification unit, and the cartridge container is left leaving a part of the edge of the sheet material A water purification cartridge comprising: a fixed passage, and a communication passage communicating with an upper portion of the adsorbing water purification unit at an unfixed edge of the part of the sheet material.   The water purification cartridge according to claim 1, wherein the sheet material has water permeability.   The water purification cartridge according to claim 1 or 2, further comprising a regulating portion that regulates the upward turning deformation of the non-fixed end edge portion of the sheet material to ensure the closed state of the communication path.   A water purifier comprising the water purification cartridge according to any one of claims 1 to 3.

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