JP4462336B2 - Water purifier - Google Patents

Description

The present invention relates to a water purifier equipped with a water purification cartridge for purifying when to flow down the raw water.

  Conventionally, what is called a pot type is known as a water purifier provided with a water purification cartridge. This pot-type water purifier has a water purification cartridge interposed between a raw water storage part located on the upper side and a purified water storage part located on the lower side, and the raw water stored on the raw water storage part side passes through the water purification cartridge by its own weight. When flowing down to the purified water storage unit side, the raw water is purified in the purified water cartridge.

  In FIG. 5, the thing of patent document 1 is shown as the water purifier 50 which comprises the water purification cartridge 1 of the said structure. The water purification cartridge 1 includes an adsorption water purification unit 2 on the upstream side that purifies raw water by the adsorption action of the filled adsorbent (activated carbon), and an adsorption water purification part by the filtration action of the filled filter body (hollow fiber membrane). 2 and a downstream filtered water purification unit 3 that further purifies the raw water that has passed through 2. The code | symbol 51 in a figure is a raw | natural water storage part, and the code | symbol 52 is a purified water storage part.

  By the way, in said water purification cartridge 1 disclosed by patent document 1, although raw water can be purified and discharged to the purified water storage part 52, after adding a mineral component to this raw water, the purified water storage part 52 It is not designed to be discharged. On the other hand, in order to add a mineral component to raw water, it is possible to fill a mineral agent with an adsorbent and a filter body in the flow path through which the raw water in the water purification cartridge 1 flows.

However, the following problems occur when the above configuration is adopted. That is, when purified water is generated and stored at a position where water is filled in the purified water storage unit 52, the inside of the purified water cartridge 1 protruding toward the purified water storage unit 52 is placed in a state immersed in the purified water for a long time. From the problem that the mineral component of the mineral agent continues to elute with respect to the purified water in the purified water storage unit 52 and the mineral agent that is filled in the flow path through which the raw water in the purified water cartridge 1 flows, water flow starts. Initially, a large amount of mineral components elute, while the amount of mineral components eluted greatly decreases as the water flow rate increases. Due to the above problem, it becomes difficult to supply purified water to which a mineral component having a stable concentration is added.
JP 2004-230335 A

The present invention was invented in view of the above problems, to provide a with a water purification cartridge that can supply the mineral components of stable density is added purified water purifier, an object Is.

In order to solve the above-mentioned problem, the present invention is a water purifier 50 that allows the raw water in the raw water storage unit 51 to pass through the following water purification cartridge 1 mounted between the raw water storage unit 51 and the purified water storage unit 52 by its own weight. . The water purification cartridge 1 includes a mineral addition unit 5 for adding a mineral component to raw water, and a water purification unit 4 for purifying the raw water provided below the mineral addition unit 5 by partitioning with a partition wall 40 , and the mineral addition unit 5 is formed so as to project at a height equal to or higher than the lowermost portion 51 a of the raw water storage section 51, and the raw water storage section of the water purifier 50 is formed by the branch path 35 including the mineral elution holes 40 formed in the partition wall 40. The mineral addition part 5 is made to communicate in the middle of the flow path of the main flow path flowing down from 51 to the purified water storage part 52 through the purified water part 4. By doing in this way, it is prevented that the mineral agent in the mineral addition part 5 continues being immersed in water. Thereby, the situation where the mineral component of the mineral agent in the mineral addition part 5 keeps eluting is prevented.

In addition, since the said mineral addition part 5 is formed so that it may be located in the height more than the lowermost part 51a of the raw | natural water storage part 51 of the water purifier 50, the purified water stored in the raw | natural water storage part 51 is in a full water position. Even if it reaches, it is prevented that the mineral agent in the mineral addition part 5 continues being immersed in water.

Moreover, in the water purification cartridge 1 of the said structure, the mineral addition part 5 is provided in the middle of the main flow path which flows down from the raw | natural water storage part 51 of the water purifier 50 to the purified water storage part 52 through the said water conveyance part 4, and the said main flow path. And a branch path 35 that communicates with each other, so that an appropriate amount of high mineral water in the mineral addition unit 5 can be merged with the flow in the main channel through the branch path 35, and a stable amount of mineral components. It is possible to continue supplying water from the beginning.

Further, forming the branch passage 35 the branch passage 35, since it is mineral elution holes 20 that penetrate through the partition wall 40 which partitions the water purification portion 4 and the mineral addition unit 5, by a high structure with compact and and design freedom It is possible to do .

  Furthermore, it is also preferable to provide an air introduction hole 22 that communicates the water purification unit 4 and the mineral addition unit 5 above the mineral elution hole 20 of the partition wall 40. By doing in this way, when all the raw water by the side of the raw water storage part 51 is introduced by the side of the water purification part 4 and the water level by the side of the water purification part 4 falls, the water level by the side of the mineral addition part 5 partitioned by the partition 40 The water level on the side of the mineral addition part 5 also begins to drop at the stage where the air introduction hole 22 is reached before reaching the mineral elution hole 20 below. Thereby, it is prevented that only the final slight amount of purified water discharged through the purified water cartridge 1 to the purified water storage unit 52 side contains a very high concentration mineral component.

  Further, in the cartridge housing 30 that forms the outer shell of the water purification cartridge 1, an exhaust port 23 that discharges the bubbles in the mineral addition unit 5 to the outside of the cartridge, and a protrusion 25 that extends inward from the periphery of the exhaust port 23, It is also suitable to provide. By doing in this way, after preventing the mineral agent with which the mineral addition part 5 is filled from being clogged by the exhaust port 23, the bubble which arises in the mineral addition part 5 is discharged | emitted rapidly outside through the exhaust port 23. It becomes possible.

  The invention according to claim 1 has an effect of preventing the mineral agent in the mineral addition part from being continuously immersed in water and supplying purified water to which a mineral component having a stable concentration is added.

The invention according to claim 1, even if purified water is stored in the raw water reservoir portion is such as to reach the full level position, an effect that mineral agent in mineral addition unit that is prevented to continue immersed in water .

In addition, the invention according to claim 1 has an effect that it is possible to continuously supply a stable amount of mineral components from the beginning.

In addition, the invention according to claim 1 is advantageous in that it is possible to form a branch path with a compact structure having a high degree of design freedom.

The invention according to claim 2, in addition to the effect of the invention according to claim 1, a high concentration only very clean water small amount of the final of the purified water is discharged into the water purifier reservoir side through the purification cartridge There exists an effect that it becomes prevented that it becomes what contains the mineral component of.

The invention according to claim 3, in addition to the effect of the invention according to claim 1 or 2, in terms of mineral agent is prevented from clogging the exhaust port, immediately outside through the exhaust port of the air bubbles generated in the mineral addition portion There is an effect that it becomes possible to discharge it.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings. In FIGS. 1-3, the water purifier 50 of an example in embodiment of this invention is shown.

  The water purifier 50 of this example is a so-called pot-type water purifier, 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. The raw water storage unit 51 and the purified water storage unit 52 located below the purified water cartridge 1 constitute a main body, and the raw water stored in the raw water storage unit 51 passes through the purified water cartridge 1 by its own weight and enters the purified water storage unit 52 When the water flows down, 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 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 includes an upstream-side adsorption water purification unit 2 that purifies raw water by the adsorption action of an adsorbent (not shown) filled therein, and a filtration of a filter body (not shown) filled therein. It has a downstream filtered water purification unit 3 that further purifies the raw water that has passed through the adsorption water purification unit 2 by the action. The adsorption water purification unit 2 and the filtered water purification unit 3 flow down the raw water in the raw water storage unit 51. The water purification unit 4 is configured to be sequentially purified while being discharged and discharged into the water purification unit 52. Furthermore, the mineral addition which adds the mineral component of the mineral agent (not shown) filled inside to the mainstream of the raw | natural water which flows through the inside of the water purification part 4 above the water purification part 4 in this water purification cartridge 1 is carried out. Part 5 is formed.

  The water purification part 4 formed in the lower half part of the water purification cartridge 1 is filled with a filter body such as a hollow fiber membrane in a cylindrical filtration container 6 having upper and lower ends opened, and has a bottomed cylindrical shape with an upper end opened. The lower end portion of the filtration container 6 is fitted into the step portion 8 of the adsorption container 7 in which the step portion 8 which is one step lower than the center of the bottom portion 7a is extended, and the peripheral wall and the outer side of the inner filtration vessel 6 are further fitted. It is formed by filling a granular adsorbent such as activated carbon between the peripheral wall of the adsorption container 7. In the center of the bottom wall of the stepped portion 8, a 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 discharge port 9 is defined.

  An O-ring 11 is fitted in the groove on the outer peripheral surface of the lower end portion of the filtration container 6, and the lower end portion of the filtration container 6 and the stepped portion 8 are brought into close contact with each other through the O-ring 11. 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. And a cap-shaped upper cover 16 having a lower end opened from above the mineral container 15, and the lower end opening edge of the upper cover 16 is engaged with the upper end opening edge of the adsorption container 7. Is done. 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 cartridge housing 30 that forms the outer shell of the water purification cartridge 1 is formed by the upper cover 16 and the adsorption container 7.

  A large number of small-diameter 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 raw water enters the purified water cartridge 1 through these water inlets 17. The structure to be 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 path 19 is connected in communication with the filtration part side exhaust port 18 of the upper cover 16. 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.

  A large number of slit-like mineral elution holes 20 are formed in the outer peripheral wall of the mineral container 15. The outer peripheral wall of the mineral container 15 forms a partition wall 40 that partitions 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. And the mineral elution hole 20 comprises the flow path which connects the mineral addition part 5 and the adsorption water purification part 2 which are partitioned off by the partition 40 in communication. 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 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 protrusions 25 extend inwardly (i.e., 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.

  By the way, when the water purification cartridge 1 having the above configuration is attached to the water purifier 50, the lower half of the water purification card ridge 1 where the water purification part 4 is formed is recessed downward from the raw water storage part 51. The upper half of the water purification cartridge 1 that forms the mineral addition portion 5 is positioned above the lowermost portion 51a of the raw water storage portion 51. At this time, the opening at the center of the bottom of the mounting concave step portion 62 is placed. Through, the discharge port 9 of the step portion 8 of the adsorption container 7 and the lower end portion of the filtration container 6 located in the step portion 8 protrude toward the lower purified water storage portion 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 water inlets 17 of the upper cover 16, and the adsorption water purification section 2 and the filtered water purification section 3 and minerals communicating therewith. Raw water is filled up to the 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 by its own weight is temporarily accumulated in the adsorbed water purification section 2 after flowing down from the water inlet 17, due to the adsorption action of the adsorbent. After purification, the turbidity component is further filtered 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. Then, after being purified, the flow path sequentially flows into the purified water storage section 52 below through the 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.

  And from this mineral addition part 5 with respect to this main flow path (refer the white arrow in FIG. 2), the mineral component of the mineral agent eluted in the raw water with which the mineral addition part 5 was filled was obtained. Mineral water is sequentially supplied through the mineral elution hole 20. 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, when raw water is filled in the entire water purification cartridge 1 and water purification is performed, if bubbles remain in the adsorption water purification unit 2 or the filtration water purification unit 3, the water flow performance deteriorates and the water quality of the water is also improved. It becomes unstable. However, according to the water purification cartridge 1 configured as described above, bubbles generated in the adsorption water purification unit 2 float up to the upper mineral addition unit 5 through the mineral elution hole 20 and the air introduction hole 22, and then the inside of the mineral addition unit 5. Are discharged from the exhaust port 23 toward the raw water storage section 51 together with the bubbles generated in the water. Further, bubbles generated in the filtered water purification unit 3 float up to the upper side in the filtration container 6, and then are carried to the filtration unit side exhaust port 18 through the air vent path 19 connected to the filtration container 6, so that the raw water storage unit It is discharged to the 51 side.

  Even when the raw water is stored in the raw water storage unit 51 above the filtration unit side exhaust port 18 of the water purification cartridge 1, an air pool is constantly generated at the upper end of the air vent path 19. Block inflow of raw water. Therefore, the raw water in the raw water storage unit 51 is prevented from flowing directly into the filtered water purification unit 3 through the air vent channel 19.

  Hereinafter, the characteristic part of the water purifier 50 which comprises the water purification cartridge 1 of this example is further explained in full detail. As described above, in the water purification cartridge 1 of the present example, the water purification unit 4 including the adsorption water purification unit 2 and the filtration water purification unit 3 for purifying the raw water, and the raw water passing through the water purification unit 4 are further reduced. Since the mineral addition part 5 which adds a mineral component is comprised, after purifying the raw | natural water in the raw | natural water storage part 51 and adding a mineral component, it becomes possible to discharge to the purified water storage part 52. ing.

  And when the water purification cartridge 1 is fitted and mounted in the mounting concave step 62 that is further recessed downward from the lowermost part 51a of the raw water storage section 51, the water purification section formed in the lower half of the water purification cartridge 1 4 is located in the mounting concave step 62, and the mineral addition part 5 formed in the upper half of the water purification cartridge 1 protrudes toward the raw water storage part 51, and the raw water storage part 51 of the water purifier 50 Since it is provided so as to be located at a height higher than the height line of the lower part 51a (see line L in FIG. 2), the purified water is temporarily generated and stored until the water surface in the purified water storage part 52 reaches the full water position. Even if it is a case, the mineral agent in the mineral addition part 5 is not immersed in water. Thereby, the situation where the mineral component of the mineral agent in the purified water storage part 52 continues eluting is prevented. In addition, the full water position in the purified water storage part 52 here means that the raw water in the raw water storage part 51 is introduced into the purified water cartridge 1 when the raw water is further supplied into the raw water storage part 51 from here. It is a position which will remain in the raw water storage part 51 without.

  Moreover, in the water purification cartridge 1 of this example, it flows down from the raw water storage part 51 to the purified water storage part 52 below from the discharge port 9 through the adsorption water purification part 2 and the filtration water purification part 3 in the water purification cartridge 1. The mineral addition part 5 is arranged in another place apart from the main flow path, and the main stream is passed through the mineral elution hole 20 functioning as a branch path 35 that connects the middle of the main flow path and the mineral addition part 5. Since it is configured to join the appropriate amount of high mineral water in the mineral addition section 5 to the raw water flowing in the road, it is possible to continuously supply a stable amount of mineral components from the beginning of the water. .

  In FIG. 4, the case where the mineral agent is filled in the mineral addition part 5 communicated with the main channel via the branch path 35 as in this example, and the case where the mineral agent is filled in the main channel are illustrated. The compared data is shown. As is clear from this data, when a mineral agent is filled in the main flow path, a very large amount of mineral components elutes at the beginning of water flow, but as the amount of water flow increases, As a result, the amount of elution is greatly reduced. On the other hand, when the mineral addition part 5 connected via the branch path 35 is filled with a mineral agent, it turns out that a stable amount of a mineral component is continuously supplied from the beginning of water flow.

  Here, the use of the mineral elution hole 20 penetrating the partition wall 40 separating the water purification unit 4 and the mineral addition unit 5 in the main channel as the branch channel 35 is compact and has a high degree of design freedom. Thus, the branch path 35 can be formed. In other words, the mineral elution hole 20 forming the branch path 35 can be formed simply by making a slit in the outer peripheral wall of the mineral container 15, so there is no need to add a special member and the degree of freedom in design of the shape is also increased. It will be expensive. Therefore, for example, by simply changing the number of the mineral elution holes 20 and the slit shape thereof, it is easy to change to another specification in which the elution amount of the mineral component is large (or small).

  Moreover, the air introduction hole 22 which connects the purified water part 4 and the mineral addition part 5 in a main flow path to the upper end part of the partition 40 above the mineral elution hole 20 formed in the lower end part of the said partition 40 is made mineral. By providing separately from the elution hole 20, the high mineral in the mineral addition unit 5 is the final stage when all the raw water in the raw water storage unit 51 is supplied to the purified water storage unit 52 through the water purification cartridge 1. Water is prevented from flowing down to the water purification unit 4 at once.

  This is because if the air introduction hole 22 is not provided, when the water level in the raw water storage unit 51 is lowered with the raw water filled in the water purification unit 4 and the mineral addition unit 5, When the water level in the raw water storage section 51 is lowered to the water inlet 17 located at the lowest position among the many water inlets 17 arranged in the vertical direction on the peripheral wall of the upper cover 16, The water level in the water purification part 4 side partitioned by 40 begins to fall. Then, when the water level on the side of the water purification unit 4 gradually decreases from the upper end of the partition wall 40 and reaches the mineral elution hole 20 at the lower end of the partition wall 40, this time high mineral water filling the mineral addition unit 5. As the water level begins to drop, the mass of high mineral water flows down into the purified water section 4 and the purified water storage section 52 all at once in the final stage. For this reason, only the final small amount of purified water discharged through the purified water cartridge 1 to the purified water storage unit 52 side contains a very high concentration mineral component.

  On the other hand, when the air introduction hole 22 is provided, the timing at which the water level in the water purification unit 4 begins to decrease (that is, a block of raw water that fills the water purification unit 4 begins to escape to the water purification unit 52 side. (Timing) and the timing at which the water level in the mineral addition unit 5 begins to decrease (that is, the timing at which the mass of high mineral water filling the mineral addition unit 5 begins to come off to the water purification unit 4 side) may be substantially matched. it can. That is, in the case where the air introduction hole 22 is provided, if the water level in the raw water storage unit 51 is lowered while the raw water is filled in the water purification unit 4 and the mineral addition unit 5, the peripheral wall of the upper cover 16. At the stage when the water level is lowered to the lowermost water inlet 17, the water level in the water purification unit 4 side partitioned by the partition wall 40 begins to decrease, and at the same time, in the mineral addition unit 5 communicated through the upper air introduction hole 22. The water level of high mineral water that fills the water begins to drop. Thereby, the timing when the high mineral water filling the mineral addition unit 5 starts to escape to the purified water unit 4 side is advanced as much as possible, and only the final small amount of purified water discharged from the purified water storage unit 52 side is very much. It can prevent becoming a thing containing a high concentration mineral component.

  Moreover, in the water purification cartridge 1 of this example, the top of the cartridge housing 30 that forms the outer shell of the water purification cartridge 1 (that is, the upper portion of the mineral addition portion 5 formed in the upper half of the water purification cartridge 1). Since the exhaust port 23 for discharging bubbles generated in the mineral addition unit 5 to the outside of the cartridge is provided, the bubbles generated in the mineral addition unit 5 are externally passed without passing through the lower adsorption water purification unit 2 and the filtration water purification unit 3. Can be discharged. In addition, since the plurality of protrusions 25 extending downward from the periphery of the exhaust port 23 are provided, the mineral agent filled in the mineral addition unit 5 is prevented from clogging each exhaust port 23. Yes.

It is a sectional side view of the water purifier provided with the water purification cartridge of an example in embodiment of this invention. It is a principal part enlarged view of FIG. It is a disassembled perspective view of a water purifier same as the above. It is the graph which contrasted the mineral elution amount of the water purifier same as the above, and the mineral elution amount of the water purifier of a comparative example. It is a sectional side view which shows the water purifier provided with the conventional water purification cartridge.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water purification cartridge 4 Water purification part 5 Mineral addition part 20 Mineral elution hole 22 Air introduction hole 23 Exhaust opening 25 Protrusion part 30 Cartridge housing 35 Branch path 40 Bulkhead 50 Water purifier 51 Raw water storage part 51a Bottom part 52 Purified water storage part

Claims (3)

In the water purifier that passes the raw water in the raw water storage part by its own weight to the water purification cartridge mounted between the raw water storage part and the purified water storage part, the water purification cartridge is partitioned by a partition wall and a mineral addition part that adds mineral components to the raw water And a water purification part for purifying raw water provided below the mineral addition part , and the mineral addition part is formed so as to project at a height higher than the lowest part of the raw water storage part. The mineral addition part is made to communicate in the middle of the main flow path flowing down from the raw water storage part of the water purifier to the purified water storage part through the branch water path formed by the mineral elution hole drilled in the water purifier. A water purifier characterized by The water purifier according to claim 1, wherein an air introduction hole is provided above the mineral elution hole of the partition wall to communicate the water purification unit and the mineral addition unit. The cartridge housing forming the outer shell of the water purification cartridge is provided with an exhaust port for discharging air bubbles in the mineral addition portion to the outside of the cartridge, and a protrusion extending inward from the periphery of the exhaust port. Item 3. A water purifier according to item 1 or 2.

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