JP4623205B2 - Water purification cartridge and water purifier - Google Patents

Description

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

As a conventional water purifier, there are provided a plurality of water passages that contain fresh water agents having different mineral contents, and each water passage is provided with a water flow control valve, and by controlling the opening and closing of each water flow control valve, One in which the mineral concentration is variably set is known (Patent Document 1).
Japanese Patent Laid-Open No. 10-15564

  However, since the water purifier of Patent Document 1 includes a plurality of water passages and water passage control valves, there is a problem that the structure is complicated and the size is increased.

  Then, an object of this invention is to obtain the water purifier which can variably set an additive density | concentration with a simpler structure, and a water purifier provided with the same.

  In the invention of claim 1, a purification chamber for purifying water and an additive storage chamber for storing an additive to be added to water are formed in the case, and an air pool is formed in an upper portion of the additive storage chamber. The additive is soaked in the introduced water in a submerged area below the air reservoir, and the additive is introduced from the portion that becomes the submerged area into the additive storage chamber. A portion that becomes an air reservoir is accommodated, and an immersion height variable member that variably sets the immersion height of the additive in the water immersion region is attached to the case.

  The invention according to claim 2 is characterized in that the immersion height variable member changes a lower limit position of the air reservoir in the additive storage chamber.

  In the invention of claim 3, at least the upper part of the case is formed in a substantially cylindrical shape, the immersion height variable member is formed in a substantially bottomed cylindrical shape, and the upper part of the case is covered from above. It is attached.

  The invention according to claim 4 is characterized in that the immersion height varying member changes the position in the vertical direction of the lower wall of the additive storage chamber.

  The invention according to claim 5 is characterized in that a second water introduction port is formed in the case so as to bypass the additive storage chamber and introduce water into the purification chamber.

  The invention according to claim 6 is characterized in that the water inlet is disposed above the second water inlet.

  The invention according to claim 7 is characterized in that the immersion height varying member is provided so as to cover the outside of the case.

  The invention according to claim 8 is characterized in that an urging mechanism is provided for pressing the additive downward in the additive storage chamber.

  In invention of Claim 9, it is a water purifier which attached | detached the said water purification cartridge which obtains the purified water which purified at least the introduce | transduced raw | natural water.

  According to the first aspect of the present invention, the immersion height of the additive with respect to the introduced water can be changed by the immersion height variable member, whereby the additive concentration can be changed. Therefore, a configuration in which the additive concentration can be variably set can be obtained as a simpler configuration as compared with a configuration in which a plurality of control valves for adjusting the concentration are provided and the opening / closing thereof is adjusted.

  According to the invention of claim 2, the immersion height can be variably set by variably setting the lower limit position of the air pocket.

  According to the invention of claim 3, the variable immersion height member can be obtained with a relatively simple configuration, and the variable immersion height member can be supported more stably on the case.

  According to the invention of claim 4, the immersion height can be variably set by variably setting the vertical position of the lower wall of the additive storage chamber.

  According to the invention of claim 5, the additive is accommodated by diverting the water introduced from the water inlet and flowing through the additive accommodation chamber and the water introduced from the second water inlet and bypassing the additive accommodation chamber. It becomes easy to adjust the flow rate of indoor water, and it becomes easy to increase the adjustment accuracy of the additive concentration.

  According to the invention of claim 6, by forming the water inlet at a position higher than the second water inlet, the flow rate of the water at the water inlet, that is, the water in the additive storage chamber, due to the difference in head or the dynamic pressure of water, etc. It can suppress that the flow volume of this increases more than necessary.

  According to the seventh aspect of the present invention, the user can easily operate the immersion height varying member since the immersion height varying member is located outside the case.

  According to the eighth aspect of the present invention, since the additive on the upper side can be moved downward more reliably by the biasing mechanism, the filling density of the additive in the submerged area is increased as compared with the case of filling with gravity. be able to.

  According to invention of Claim 9, the water purifier equipped with the water purification cartridge which has the said effect can be obtained.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that similar components are included in the following embodiments. Therefore, in the following, common reference numerals are given to those similar components, and redundant description is omitted.

  (First Embodiment) FIGS. 1 to 4 show a first embodiment of the present invention. FIG. 1 is a sectional view of a water purifier, FIG. 2 is an exploded perspective view of a water purification cartridge, and FIG. 4 is a perspective view of the water purification cartridge, FIG. 4A is a perspective view of the water purification cartridge, FIG. 4A is a view showing a state where the immersion height variable member is at the lowest position, and FIG. FIG. 5C is a diagram showing a state in the highest position, FIG. 5 is a sectional view of the water purification cartridge, and FIG. 5A is a diagram showing a state in which the immersion height variable member is in the lowest position. (b) is a figure which shows the state in an intermediate position, (c) is a figure which shows the state in the highest position.

  First, with reference to FIG. 1, schematic structure of the water purifier 1 concerning this embodiment is demonstrated. This water purifier 1 is configured as a pot-type water purifier. A substantially bottomed cylindrical partition wall body 3 is accommodated in the cylinder of the substantially bottomed cylindrical pot case 2, and the partition wall body 3 forms approximately the upper half of the cylinder of the pot case 2. It is partitioned into a raw water chamber 4 and a water purification chamber 5 that forms approximately half of the lower side.

  The bottom wall 3a of the partition wall 3 is formed with a substantially cylindrical recess 3b that is recessed downward. A substantially cylindrical water purification cartridge 6 is inserted into the recess 3b from the top to the back and fitted. An opening 3d is formed in the back wall 3c of the recess 3b.

  In a state where the water purification cartridge 6 is fitted in the recess 3b, the upper portion 6a of the water purification cartridge 6 is exposed in the raw water chamber 4, and the water inlets 7a and 7b formed in the case 7 face the raw water chamber 4 at the upper portion 6a. It is like that. The second water inlet 7b is installed in the vicinity of the bottom wall 3a. In this state, the lower end 6b of the water purification cartridge 6 is exposed in the water purification chamber 5 through the opening 3d, and the drain port 7c formed in the case 7 faces the water purification chamber 5 at the lower end 6b. Yes. The raw water in the raw water chamber 4 is introduced into the water purification cartridge 6 from the water inlets 7a and 7b, and after being purified at least, is discharged into the water purification chamber 5 from the drain port 7c.

  Above the raw water chamber 4, a ceiling wall 8 in which a water supply port 8a is formed is disposed. The water supply port 8a is closed so as to be openable and closable by a top-opening type lid 9 that is rotatably attached to the top wall 8. The raw water is supplied into the raw water chamber 4 through the water supply port 8a with the lid 9 opened upward.

  Further, a passage 10 extending upward from the water purification chamber 5 is formed between the side wall 3e of the partition wall 3 and the pot case 2, and the pot case 2 or the top wall 8 has an upper end portion of the passage 10. A water inlet 10a is formed at the position. In the present embodiment, the pot case 2 is tilted so that the water injection port 10a is downward (in FIG. 1, the pot case 2 is tilted clockwise), and the purified water stored in the water purification chamber 5 is collected. The water is discharged from the water inlet 10a through the passage 10. In the present embodiment, the water inlet 10a is closed so as to be openable and closable by a top-opening type lid 11 that is rotatably supported by the pot case 2 or the top wall 8. In this case, when the pot case 2 is tilted, the lid 11 can be rotated by its own weight, dynamic pressure of water, or the like to open the water inlet 10a.

  Next, the configuration of the water purification cartridge 6 will be described with reference to FIGS. The water purification cartridge 6 is formed in a substantially cylindrical shape, and the cylindrical central axis Ax (see FIGS. 1 and 2) is used in a posture along the vertical direction. The case 7 has an upper case 12 that forms an upper part in use and a lower case 13 that forms a lower part. The lower edge of the upper case 12 and the upper edge of the lower case 13 are connected to each other to form a substantially cylindrical outer shape. Presents. In the following, the vertical direction, the axial direction, the circumferential direction, and the radial direction are defined based on the cylindrical shape of the water purification cartridge 6 in the use state.

  The inside of the case 7 is roughly divided into three spaces in the vertical direction (axial direction) by a partition wall 14 and a sheet 15 disposed below the partition wall 14 with a space therebetween. The upper portion is an additive storage chamber S1 for storing the additive 16, the lowermost portion is a purification chamber S2 for purifying water, and the intermediate portion is an intermediate chamber S3.

  The additive storage chamber S <b> 1 is formed by being surrounded by the upper case 12 and the partition wall 14. The upper case 12 includes a peripheral wall 12a that forms the upper part of the peripheral wall of the case 7, a top wall 12b that forms the top wall of the case 7, and an inner portion that extends downward from the center of the top wall 12b substantially along the central axis Ax of the water purification cartridge 6. Tube 12c. A partition wall 14 is attached to the upper case 12 so as to close the lower part in the cylinder. In other words, in the present embodiment, the additive storage chamber S1 is formed in the cylinder of the upper case 12 as a space having a substantially annular cross section surrounded by the peripheral wall 12a, the top wall 12b, the inner cylinder 12c, and the partition wall 14. Yes. In this additive storage chamber S1, an additive 16 such as granular calcium having a diameter of about several millimeters is stored.

  A substantially rectangular water inlet 7a is formed in the peripheral wall 12a as shown in FIGS. A water-permeable mesh 17 is stretched on the water inlet 7a by insert molding or the like, so that the additive 16 is prevented from spilling out of the water inlet 7a. The inner cylinder 12c is formed with a slit-shaped notch 12d extending upward from the lower end thereof. The width of the notch 12d is set to be smaller than the particle diameter of the additive 16, thereby suppressing the additive 16 from flowing out of the notch 12d. In the present embodiment, the axial position of the upper edge 12e of the notch 12d and the axial position of the upper edge 12f of the water inlet 7a are substantially the same.

  Further, a through hole 14c through which the inner cylinder 12c is inserted is formed at the center of the bottom wall portion 14a of the partition wall 14. A plurality of slits 14d extending radially from the central axis Ax of the water purification cartridge 6 are formed in the bottom wall portion 14a as drain ports from the additive storage chamber S1. The width of the slit 14d is also set to be smaller than the particle diameter of the additive 16, thereby suppressing the additive 16 from flowing out of the slit 14d.

  In the additive storage chamber S1 having the above configuration, the additive 16 is eluted into the raw water introduced into the additive storage chamber S1 from the raw water chamber 4 through the water inlet 7a, and the water to which the additive has been added is added. It flows out from the agent storage chamber S1 to the intermediate chamber S3 through the slit 14d of the partition wall 14.

  Here, in the present embodiment, an air reservoir Aa for confining air is formed in the upper portion of the additive storage chamber S1, and thereby, the additive 16 existing in the air reservoir Aa, that is, in the upper portion of the additive storage chamber S1. Do not immerse in water. That is, the concave portion 18 constituted by the peripheral wall 12a, the top wall 12b, and the inner cylinder 12c is only opened downward and has no air passage upward, so that the additive is contained from the water inlet 7a. Even when water enters the chamber S1 and all of the upper part 6a of the water purification cartridge 6 is immersed in the water stored in the raw water chamber 4 (that is, in a submerged state), air accumulates in the recess 18 and the air pools. It is possible to prevent the additive 16 in the Aa from getting wet. That is, the additive 16 positioned below the upper limit L of the flooded area Aw is immersed in water, and the additive 16 positioned above the upper limit L is not immersed in water.

  In such a configuration, when the additive 16 located below is immersed in water and eluted, the additive 16 located above falls downward due to gravity and is automatically supplied to the flooded area Aw. Therefore, since the additive 16 accommodated in the additive accommodating chamber S1 can be used sequentially from the one arranged on the lower side, the additive accommodated in the water purification cartridge is totally submerged or submerged. Compared to the configuration, the usable period of the additive 16 can be made longer, and the concentration difference of the additive can be more easily suppressed between the initial stage of use of the water purification cartridge 6 and the latter stage of use.

  As shown in FIG. 2 and FIG. 4, a plurality of second water inlets 7 b are formed at substantially constant intervals in the circumferential direction at the lower portion of the peripheral wall 12 a of the upper case 12 that forms the peripheral wall of the intermediate chamber S <b> 3. Therefore, raw water is introduced into the intermediate chamber S3 from the raw water chamber 4 through the second water inlet 7b, and water to which the additive is added from the additive storage chamber S1 through the slit 14d, These waters are introduced into the purification chamber S2 (the adsorption treatment chamber S21) disposed below the intermediate chamber S3. That is, in this embodiment, the raw water introduced from the second water inlet 7b to the intermediate chamber S3 bypasses the additive storage chamber S1. In this way, by dividing the water flowing through the additive storage chamber S1 and the water bypassing the additive storage chamber S1, the flow rate of the water flowing through the additive storage chamber S1 and the additive storage chamber S1 are reduced. The flow rate of the water to be bypassed can be set independently, so that the adjustment accuracy of the additive concentration can be easily increased.

  Moreover, in this embodiment, the 2nd water inlet 7b is arrange | positioned below the water inlet 7a. For this reason, the water head difference due to the height difference between the water inlet 7a and the second water inlet 7b, and the second water inlet 7b located near the bottom wall 3a of the partition wall 3 when the raw water chamber 4 is initially supplied with water. Due to the dynamic pressure of the water that reaches, the water is more likely to enter from the second water inlet 7b than the water inlet 7a. Therefore, particularly when the raw water chamber 4 is initially supplied, the flow rate of water at the water inlet 7a can be relatively reduced, and the flow rate of water in the additive storage chamber S1 can be easily adjusted to be small.

  The purification chamber S2 disposed below the intermediate chamber S3 is partitioned in a radial direction by a substantially cylindrical cylindrical body 19 disposed at a position along the central axis Ax of the water purification cartridge 6. In the present embodiment, The outer peripheral side of the cylinder 19 is an adsorption processing chamber S21 in which an adsorbent (eg, granular or powdered activated carbon) 20 is accommodated, and the inside of the cylinder 19 is a hollow filter material (eg, an inverted U-shaped curve). A filtration processing chamber S22 in which a thread membrane 21) is accommodated. In such a configuration, the water introduced from the intermediate chamber S3 is discharged from the drain port 7c of the lower end portion 6b via the adsorption processing chamber S21 and the filtration processing chamber S22 in this order. The cylindrical body 19 is fitted into a recessed portion 13b that is recessed downward formed in the center portion of the bottom wall 13a of the lower case 13 that forms the bottom wall of the case 7, and thereby, in the vertical direction along the central axis Ax of the water purification cartridge 6. It is erected.

  The adsorption processing chamber S <b> 21 is surrounded by the peripheral wall 13 c of the lower case 13, which forms the lower peripheral wall of the case 7, the cylindrical body 19, the bottom wall 13 a, and the sheet 15, and is formed in a cylindrical shape having a substantially annular cross section. The sheet | seat 15 can be comprised, for example with a nonwoven fabric. In this embodiment, the sheet 15 is formed in a ring shape and surrounds the cylinder 19, and the outer edge portion 15 a is fixed to the case 7 so as to be sandwiched between the upper case 12 and the lower case 13. On the other hand, the inner edge portion 15b is a free end so that water is introduced from the intermediate chamber S3 into the adsorption processing chamber S21 through a gap between the inner edge portion 15b and the cylindrical body 19. In addition, the sheet | seat 15 may be comprised with a water-permeable raw material, and you may make it permeate | transmit water. Further, in the present embodiment, the cap 22 is attached to the upper end of the cylindrical body 19, and the inner edge portion 15b of the sheet 15 is warped upward from the flange portion 22a by the flange portion 22a protruding from the cap 22 to the outside of the diameter. I am trying not to. With such a configuration, even when the water purification cartridge 6 is tilted or turned upside down with the water purification cartridge 1 removed from the water purifier 1, the sheet 15 is locked to the flange portion 22a and the gap is closed. It is possible to suppress the adsorbent 20 from leaking from S21 to the intermediate chamber S3 side.

  A communication port 19a is formed in the lower part of the cylindrical body 19, and the adsorption processing chamber S21 and the filtration processing chamber S22 are communicated with each other through the communication port 19a. The water removed by adsorbing impurities to the adsorbent 20 in the adsorption treatment chamber S21 is introduced into the filtration treatment chamber S22 through the communication port 19a.

  In the filtration chamber S22, a number of thin straw-shaped hollow fiber membranes as the filtering material 21 are accommodated in a state of being bundled and curved in a substantially inverted U shape. The water that has passed through the membrane wall of the hollow fiber membrane from the inside of the filtration processing chamber S22 and permeated into the membrane flows out into the lower end of the filtration processing chamber S22 through the membrane, and flows out from the drain port 7c into the water purification chamber 5. . When water passes through the membrane wall of the hollow fiber membrane, impurities contained in the water are filtered. The hollow fiber membrane as the filter medium 21 is fixed to the cylindrical body 19 while being filled with an adhesive (not shown) below the communication port 19a, and is hollowed out from the filtration processing chamber S22 by this adhesive. Direct outflow is prevented without passing through the thread membrane.

  And in this embodiment, the immersion height variable member 23 which variably sets the immersion height of the additive 16 in the water immersion area Aw is attached to the case 7. By variably setting the vertical position of the immersion height variable member 23, the immersion height D (see FIG. 5) as the height at which the additive 16 is immersed in water changes, and thus the additive concentration is changed. Can be changed. The larger the immersion height D, the higher the additive concentration.

  Specifically, as shown in FIG. 2, a substantially bottomed cylindrical immersion height varying member 23 is attached so as to cover the outer periphery of the upper case 12 from above. The peripheral wall 23a of the immersion height varying member 23 covers the peripheral wall 12a of the upper case 12 with a slight gap.

  The height adjusting mechanism 25 is configured by the groove 25 a provided in the peripheral wall 12 a of the upper case 12 (case 7) and the protrusion 25 b provided on the inner surface of the immersion height varying member 23. The groove 25a has a vertical groove 25c extending downward from the upper end of the peripheral wall 12a and a plurality of horizontal grooves 25d extending from the vertical groove 25c toward one side in the circumferential direction (left side in FIG. 2). The horizontal grooves 25d are arranged in a plurality (five in this embodiment) at a constant pitch (equal intervals). Therefore, the protrusion 25b is moved along the vertical groove 25c, the immersion height variable member 23 is lowered, the immersion height variable member 23 is rotated in the circumferential direction, and the protrusion 25b is inserted into any of the horizontal grooves 25d. The height of the immersion height variable member 23 can be variably set in a plurality of stages (in this embodiment, five stages). It is preferable that a protrusion 25e is formed on the back side of the horizontal groove 25d so that the protrusion 25b can be easily maintained at the innermost part of the horizontal groove 25d, and a click feeling is generated by getting over the protrusion 25b.

  And in this embodiment, the lower end 23h of the center cylinder part 23f of the immersion height variable member 23 and the lower edge 23b of the surrounding wall 23a are made the same height. Accordingly, the annular recess 23i between the peripheral wall 23a of the immersion height varying member 23 and the central cylindrical portion 23f also becomes an air reservoir as a whole, and the positions of the lower end 23h and the edge 23b are set to the upper limit L of the flooded area Aw. Therefore, as shown in FIGS. 5A to 5C, by setting the vertical position of the immersion height varying member 23 variably, the position of the upper limit L of the flooded area Aw (that is, the air reservoir Aa). The lower limit position) can be variably set in the vertical direction, whereby the immersion height D of the additive 16 in the additive storage chamber S1 can be variably set, and the additive concentration can be variably set.

  In addition, when air unintentionally accumulates in each part of the water purification cartridge 6, particularly in the intermediate chamber S 3, between the sheet 15 and the adsorbent 20, the water gravity balances the air buoyancy and the flow path of the water is increased. Since it is blocked by air, a desired flow rate cannot be obtained, and it may take time until purified water is obtained, or a desired additive concentration may not be obtained. Therefore, in this embodiment, an air vent passage is formed substantially along the central axis Ax of the water purification cartridge 6.

  Specifically, a substantially cylindrical central tube portion 23f that extends downward and enters the tube of the inner tube 12c is formed at the center portion of the top wall 23e of the immersion height varying member 23, and this central tube portion A through hole 23g penetrating the top wall 23e is formed on the back side (upper side) of 23f. This through hole 23g becomes an air vent hole of the water purification cartridge 6.

  The cap 22 fitted to the upper end of the cylindrical body 19 has a conical portion 22b that becomes thinner toward the upper side, and the air in the filtration processing chamber S22 is in the cylinder of the conical portion 22b and the central cylindrical portion 23f. And then discharged from the through hole 23g.

  The air in the additive storage chamber S1, the adsorption processing chamber S21, and the intermediate chamber S3 (except for the air that accumulates in the air reservoir Aa) passes through the notch 12d from the opening at the lower end of the central cylindrical portion 23f. It enters the cylinder 23f and is discharged from the through hole 23g. In the state of FIG. 5A, air is not discharged from the additive storage chamber S1.

  As described above, in the present embodiment, the air reservoir Aa is formed in the upper part of the additive storage chamber S1, and the additive 16 is added to the introduced water in the submerged area Aw below the air reservoir Aa. In the additive storage chamber S1, the additive 16 is accommodated from the part that becomes the water immersion area Aw to the part that becomes the air reservoir Aa, and the case 16 is immersed in the additive 16 in the water immersion area Aw. An immersion height variable member 23 that variably sets the height D was attached. Therefore, according to such a configuration, a configuration in which the additive concentration can be variably set can be obtained as a simpler configuration as compared with a configuration in which a plurality of control valves for adjusting the concentration are provided and the opening / closing thereof is adjusted. In addition, when calcium etc. are used as an additive, the hardness of water can be variably set.

  Moreover, according to this structure, the additive 16 in the air reservoir Aa can be maintained in a state where the additive 16 is not submerged or flooded. When the additive 16 in the water immersion area Aw is immersed in water and eluted, the additive 16 positioned above the water drops downward due to gravity and is automatically supplied to the water immersion area Aw. Therefore, since the additive 16 accommodated in the additive accommodating chamber S1 can be used sequentially from the one arranged on the lower side, the additive accommodated in the water purification cartridge is totally submerged or submerged. Compared to the configuration, the usable period of the additive 16 can be made longer, and the change in the concentration of the additive can be suppressed to be smaller between the initial use stage and the later use stage of the water purification cartridge 6. Moreover, the immersion height of the additive 16 can be set according to the height of the submerged area Aw, whereby the maximum value of the additive concentration can be set. That is, it is possible to suppress the additive 16 from dissolving in water more than necessary.

  Furthermore, in the present embodiment, the immersion height can be set by a relatively simple configuration without moving the additive 16 up and down by variably setting the lower limit position of the air reservoir Aa (the position of the upper limit L of the flooded area Aw). It is possible to variably set D and thus variably set the additive concentration.

  In the present embodiment, the case 7 is provided with the second water inlet 7b that bypasses the additive storage chamber S1 and introduces water into the purification chamber S2. Therefore, by dividing the water that passes through the additive storage chamber S1 and the water that bypasses the additive storage chamber S1, the flow rate of the water flowing through the additive storage chamber S1 and the additive storage chamber S1 are bypassed. The flow rate of water can be set independently, so that the flow rate of water in the additive storage chamber S1 can be easily set to a value suitable for concentration adjustment, and the adjustment accuracy of the additive concentration can be easily increased. Become.

  Moreover, in this embodiment, the water inlet 7a was arrange | positioned above the 2nd water inlet 7b. For this reason, the water head difference due to the height difference between the water inlet 7a and the second water inlet 7b, and the second water inlet 7b located near the bottom wall 3a of the partition wall 3 when the raw water chamber 4 is initially supplied with water. Due to the dynamic pressure of the water that reaches, the water is more likely to enter from the second water inlet 7b than the water inlet 7a. Therefore, especially at the beginning when the raw water chamber 4 is supplied with water, the flow rate of water at the water inlet 7a can be relatively reduced, and the flow rate of water in the additive storage chamber S1 increases more than necessary. It is possible to suppress the concentration from being affected (the concentration increases or decreases). Furthermore, according to this structure, it becomes easy to arrange | position the immersion height variable member 23 which changes the opening area of the water inlet 7a in the upper part of the water purification cartridge 6. FIG. As in this embodiment, when the water purification cartridge 6 is inserted into the pot case 2 of the water purifier 1 from above and attached, the immersion height variable member 23 is attached from above while still attached in the pot case 2. Easy to operate and convenient.

  Moreover, in this embodiment, since additive storage chamber S1 was arrange | positioned above the 2nd water inlet 7b, after the water level of the raw | natural water chamber 4 became lower than the lower end of the additive storage chamber S1, from the 2nd water inlet 7b. Only water will flow into the water purification cartridge 6 and will not pass through the additive storage chamber S1 and will not contain the additive 16 and will be downstream from the intermediate chamber S3 (in the intermediate chamber S3, the purification chamber S2, etc.). Thus, the discharge of the additive 16 can be promoted to prevent the additive 16 from remaining. Therefore, at the time of the next use, it is suppressed that the additive concentration becomes higher than the set value due to the remaining additive 16, and the desired additive concentration is easily obtained.

  In the present embodiment, the immersion height variable member 23 is disposed outside the case 7. Therefore, there is an advantage that the user can easily operate the immersion height varying member 23.

  In the present embodiment, at least the upper portion of the case 7 is formed in a substantially cylindrical shape, and the immersion height varying member 23 is formed in a substantially bottomed cylindrical shape, and is attached so as to cover the upper portion of the case 7 from above. It was. Therefore, the immersion height variable member 23 can be obtained with a relatively simple configuration, and the immersion height variable member 23 can be more stably supported on the case 7. Furthermore, when the water purification cartridge 6 is inserted and mounted in the pot case 2 of the water purifier 1 from above as in the present embodiment, the immersion height variable member is mounted from above while being mounted in the pot case 2. It is easy to operate 23 and is convenient.

  (Second Embodiment) FIG. 6 is a sectional view of a water purification cartridge according to a second embodiment of the present invention.

  The water purification cartridge 6A according to the present embodiment can be used by being attached to the water purifier 1 instead of the water purification cartridge 6 according to the first embodiment.

  The water purification cartridge 6A is provided with a pressing mechanism 26 that presses the additive 16 downward toward the submerged area Aw. The pressing mechanism 26 includes a top plate 26a placed on the granular additive 16, and a coil spring as a biasing mechanism that is housed in the recess 18 of the upper case 12B and biases the top plate 26a downward. 26b, and the additive 16 is pressed downward through the top plate 26a by the compression reaction force of the coil spring 26b.

  According to such a configuration, the additive 16 on the upper side can be moved downward more reliably by the pressing mechanism 26 in accordance with the elution of the additive 16 in the submerged area Aw. Thus, the filling density of the additive 16 in the flooded area Aw can be increased. In addition, the change in the density of the additive 16 in the submerged area Aw during the use period of the water purification cartridge 6 can be reduced to suppress the fluctuation of the additive concentration.

  (Third Embodiment) FIGS. 7 and 8 show a third embodiment of the present invention. FIG. 7 is a sectional view of a water purification cartridge, with the immersion height variable member arranged at the lowest position. FIG. 8 is a sectional view of the water purification cartridge, and is a view showing a state in which the immersion height variable member is disposed at the uppermost position.

  The water purification cartridge 6B according to the present embodiment can also be used by being attached to the water purifier 1 instead of the water purification cartridge 6 according to the first embodiment.

  In each of the water purification cartridges 6 and 6A according to the above embodiments, the lower limit position of the air reservoir Aa (the position of the upper limit L of the submerged area Aw) in the additive containing chamber S1 is changed by the immersion height variable member 23. Met. On the other hand, the water purification cartridge 6B according to the present embodiment changes the vertical position of the additive 16 by changing the vertical position of the lower wall 27a of the additive storage chamber S1, and thereby the submerged area. The immersion height D in Aw is changed.

  Specifically, similarly to the partition wall 14, the immersion height varying member 27 closes the lower part of the additive containing chamber S1 and has a lower wall 27a having a slit 27c serving as a drain outlet, and extends upward from the lower wall 27a. A leg portion 27b exposed to the outside of the upper case 12B from a slit 12j formed in a step portion of the case 12B (case 7B) is provided. The leg portion 27b extends along the outer surface of the peripheral wall 12a of the upper case 12B, and is similar to that shown in FIG. 2 between the inner surface of the leg portion 27b and the outer surface of the peripheral wall 12a of the upper case 12B. A height adjusting mechanism 25 is provided. In addition, the leg part 27b and the slit 12j which penetrates this are provided with multiple (for example, three every 120 degrees) by the fixed interval along the circumferential direction.

  Even in such a configuration, the concave portion 18 of the upper case 12B becomes the air reservoir Aa, and the additive 16 above the upper limit L of the water immersion area Aw (that is, in the air reservoir Aa) is not submerged or submerged and is below the upper limit L. Only certain additives 16 will be immersed in water. In the present embodiment, the upper limit L is the position of the upper edge 12e of the notch 12d formed in the inner cylinder 12c. The upper limit L of the submerged area Aw, that is, the lower limit of the air reservoir Aa is not changed even if the vertical position of the submersible height varying member 27 relative to the upper case 12B is changed by the height adjusting mechanism 25 described above. It is. However, by variably setting the position of the lower wall 27a in the vertical direction, the additive 16 (the storage area thereof) moves up and down in the additive storage chamber S1, and the additive 16 immersed in water in the additive storage chamber S1. The height, that is, the immersion height D can be variably set. That is, in the state shown in FIG. 7, the immersion height D of the additive 16 is increased by the amount that the immersion height varying member 27 is at the lower side and the additive 16 is positioned at the lower side. Get higher. In the state shown in FIG. 8, the immersion height D of the additive 16 becomes smaller and the additive concentration becomes lower by the amount that the immersion height varying member 27 is on the upper side and the additive 16 is located entirely on the upper side. . Incidentally, in the present embodiment, the immersion height D is 0 and the additive concentration is 0 in the state of FIG.

  The water inlet 7a is provided below the step portion of the peripheral wall 12a (below the upper limit L). The water inlet 7a may be provided at a position where there is no leg 27b, or a slit 27c that overlaps the water inlet 7a may be formed in the leg 27b.

  As described above, the immersion height D can also be variably set by variably setting the vertical position of the lower wall 27a of the additive storage chamber S1. Also in this case, a configuration in which the additive concentration can be variably set can be obtained as a simpler configuration as compared with a configuration in which a valve or the like is provided to change the flow rate.

  Moreover, in this embodiment, since the height of the upper end (top wall) of the water purification cartridge 6B can be made unchanged, the water purification cartridge 6B can be configured more compactly.

  The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above embodiment, and various modifications can be made. For example, the water purification cartridge may have a shape other than the cylindrical shape, and the immersion height variable member may have a shape other than the bottomed cylindrical shape. Moreover, the specifications (shape, size, layout, etc.) of the additive storage chamber, the purification chamber, the water inlet, the second water inlet, and other details can be changed as appropriate. Further, the flow rate may be changed by changing the position of the immersion height varying member to change the opening area of the water inlet or the second water inlet.

It is sectional drawing of the water purifier concerning embodiment of this invention. It is a disassembled perspective view of the water purification cartridge concerning 1st Embodiment of this invention. It is sectional drawing of the water purification cartridge concerning 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view of the water purification cartridge concerning 1st Embodiment of this invention, Comprising: (a) is a figure which shows the state which has an immersion height variable member in the lowest position, (b) is a figure which shows the state in an intermediate position (C) is a figure which shows the state in the highest position. It is sectional drawing of a water purification cartridge, Comprising: (a) is a figure which shows the state in which an immersion height variable member is in the lowest position, (b) is a figure which shows the state in an intermediate position, (c) is in the highest position It is a figure which shows a certain state. It is sectional drawing of the water purification cartridge concerning 2nd Embodiment of this invention. It is sectional drawing of the water purification cartridge concerning 3rd Embodiment of this invention, Comprising: It is a figure which shows the state which has arrange | positioned the immersion height variable member to the lowest part. It is sectional drawing of the water purification cartridge concerning 3rd Embodiment of this invention, Comprising: It is a figure which shows the state which has arrange | positioned the immersion height variable member in the uppermost part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water purifier 6, 6A, 6B Water purification cartridge 7, 7B Case 7a Water inlet 7b Second water inlet 16 Additive 23, 27 Immersion height variable member 26 Energizing mechanism 27a Lower wall Aa Air pool Aw Water immersion area D Immersion height L Upper limit of flooded area (lower limit of air pool)
S1 Additive storage room S2 Purification room

Claims (9)

In the case, a purification chamber for purifying water and an additive storage chamber for storing an additive to be added to water are formed,
Forming an air reservoir in the upper part of the additive storage chamber, so that the additive is immersed in the introduced water in a submerged area below the air reservoir;
In the additive accommodating chamber, the additive is accommodated from the portion that becomes the flooded area to the portion that becomes the air reservoir,
A water purification cartridge, wherein a dipping height variable member for variably setting a dipping height of the additive in the submerged area is attached to the case.   The water purification cartridge according to claim 1, wherein the immersion height variable member changes a lower limit position of the air pool in the additive storage chamber. Forming at least the upper part of the case into a substantially cylindrical shape;
The water purification cartridge according to claim 2, wherein the immersion height variable member is formed in a substantially bottomed cylindrical shape, and is attached so as to cover an upper part of the case from above.   The water purification cartridge according to claim 1, wherein the immersion height variable member changes a position in a vertical direction of a lower wall of the additive storage chamber.   The water purification cartridge according to any one of claims 1 to 4, wherein a second water introduction port is formed in the case to bypass the additive storage chamber and introduce water into the purification chamber. The water purification cartridge according to claim 5, wherein the water inlet is disposed above the second water inlet.   The water purification cartridge according to any one of claims 1 to 6, wherein the immersion height variable member is provided so as to cover an outer side of the case.   The water purification cartridge according to any one of claims 1 to 7, further comprising an urging mechanism that presses the additive downward in the additive storage chamber.   The water purifier which attached the water purification cartridge as described in any one of Claims 1-8 detachably to obtain the purified water which purified at least the introduced raw | natural water.

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