JP3717499B2 - Water purifier - Google Patents

Description

  The present invention relates to a water purifier constituting a water purifier used for purifying domestic water such as tap water supplied from a general water supply facility.

  In recent years, attention has been focused on the harmful effects of chlorine contained in tap water, and various water purifiers for removing such chlorine and impurities have been developed. A conventional water purifier is typically equipped with a water purifier formed by closely filling a filter medium container with a filter medium such as activated carbon or ceramic as a water purifier, and tap water is contained in such a water purifier. By passing through, chlorine, impurities, etc. contained in tap water can be adsorbed and removed by the filter medium (see, for example, Patent Document 1).

  In a water purifier constituting such a water purifier, when used to some extent, a so-called “Mizumichi” is formed in which water constantly passes through a filter medium such as activated carbon filled in a filter medium container. The water purification function may be degraded within a relatively short period of time. Then, the water purifier provided with the means to eliminate such "Mizumichi" is developed (for example, refer patent document 2).

  On the other hand, in order to wash the irradiation lamp used in the sterilization apparatus of the 24-hour circulating water purifier water heater, the floating water flow path provided with the irradiation lamp was equipped with beads that can float and swirl flow generating means. The thing is proposed (for example, refer patent document 3).

JP-A-10-180248 (page 2-5) JP-A-8-281258 (page 5-8) JP-A-7-290051 (page 2-5)

  In the case of the water purifier channel device described in Patent Document 1, it is possible to ensure a long contact time between the tap water and the filter medium, but there is a possibility that the above-mentioned “Mizumichi” is formed, which is solved. Since no means are provided, it is impossible to avoid a decrease in the water purification function caused by “Mizumichi”.

  Since the water purifier described in Patent Document 2 must secure a moving space for the perforated board in the water purification cartridge unit, the cartridge tends to be larger than the capacity of the activated carbon, and can be made compact. Have difficulty. Moreover, since the water purification function cannot be exhibited unless a water pressure larger than the elastic force of the spring pressing the perforated board is applied, it cannot be used when the tap water pressure is low. Furthermore, since the spring material deteriorates due to repeated expansion and contraction, durability may be insufficient when used in a situation where the tap water is frequently interrupted.

  In the case of the irradiation lamp cleaning apparatus described in Patent Document 3, since the beads accommodated in the flow channel are for cleaning the irradiation lamp, the beads arranged on the axial center of the flow channel It is necessary to secure a moving space that can efficiently collide with the irradiation lamp at a predetermined speed. For this reason, the amount of beads contained in the flow channel must be reduced, and even if such a small amount is used, even if a porous body such as activated carbon or apatite is used as the beads, chlorine contained in tap water And impurities cannot be removed to the required level.

  The problem to be solved by the present invention is a water purifier that is relatively small, can efficiently remove chlorine and impurities in tap water, and can maintain an excellent water purification function over a relatively long period of time. Is to provide.

The water purifier of the present invention includes a cylindrical filter medium container filled with a granular filter medium up to 85% to 95% of the volume, and one end in the axial direction of the filter medium container for introducing water into the filter medium container. A water inlet provided in the filter medium container, a water outlet provided at the other end in the axial direction of the filter medium container for discharging water introduced into the filter medium container, and water introduced from the water inlet. A spiral water guide portion provided on an inner peripheral surface of the filter medium container is provided for flowing while drawing a spiral flow toward the water outlet in the filter medium container.

  With such a configuration, the tap water introduced from the water inlet flows along with the granular filter medium while drawing a spiral flow along the water guide portion on the inner peripheral surface of the filter medium container. At this time, the water and the granular filter medium are vigorously separated. Since it keeps contacting while being stirred, chlorine and impurities contained in tap water can be efficiently removed. In addition, since the granular filter medium flows while drawing a spiral flow with water, the surface of the granular filter medium is in contact with water evenly, and no water is formed, so it has an excellent water purification function for a relatively long period of time. Can be maintained.

  Furthermore, since the particulate filter medium only needs to be able to flow in the filter medium container, it is not necessary to secure a particularly wide space for the flow of the granular filter medium, and it can be filled up to about 85% to 95% of the volume of the filter medium container. As a result, the fluidity of the granular filter medium can be maintained while minimizing the flow space in the filter medium container, so that the excess space in the filter medium container can be reduced, and the water purifier can be made relatively small. be able to.

  Here, the water inlet is arranged on the axis, and diffusion is performed to radially introduce water introduced from the water inlet into the filter medium container at a position facing the water inlet in the filter medium container. It is desirable to provide means. If such a diffusing means is provided, the water introduced from the water inlet can be evenly dispersed toward the entire granular filter medium filled in the filter medium container, so that the filtration efficiency can be improved.

  In this case, a diffusing member having a water receiving surface facing the water inlet and a plurality of water holes arranged radially around the water receiving surface can be provided as the diffusing means. If such a diffusing member is provided, the water introduced from the water inlet contacts the water inlet surface, then diffuses radially, passes through a plurality of water holes arranged around the water receiving surface, and passes through the granular filter medium. Therefore, the filtration efficiency can be improved with a simple structure.

  Further, if a mesh body through which the particulate filter medium cannot pass is stretched in the water passage hole of the diffusion member, a water passage hole having an inner diameter larger than the outer diameter of the granular filter medium can be provided. Resistance is reduced, and a decrease in the amount of filtered water can be suppressed. In addition, suspended solids contained in tap water introduced from the water inlet can be filtered and removed with a mesh, greatly reducing the flow of suspended solids into the filter media container and extending the life of the granular filter media. be able to.

  On the other hand, it is desirable to arrange the water guiding portion provided on the inner peripheral surface of the filter medium container so that the inner peripheral surface of the filter medium container rotates once between the water inlet and the water outlet. With such a configuration, it is possible to generate a necessary and sufficient spiral flow in the filter medium container while minimizing an increase in water flow resistance due to the generation of the spiral flow, without losing an excellent water purification function. A sufficient amount of purified water can be secured.

  In this case, the water guide section that makes one rotation on the inner peripheral surface of the filter medium container, when holding the filter medium container so that its axis is horizontal, starts from the lowest part on the water inlet side of the inner peripheral surface, It is desirable to arrange so that the lowermost part on the water outlet side ends. With such an arrangement, a straight line connecting the start and end of the water guide section is located at the lowermost part of the filter medium container on the inner peripheral surface of the cylindrical filter medium container, but there is no water guide section on the straight line It becomes. For this reason, the granular filter medium gathers at the bottom of the filter medium container due to the action of gravity, and it does not move by being caught in the water conveyance section, causing a disadvantageous phenomenon such as forming `` Michimichi '', and reducing the filtration efficiency. It can be avoided.

  The present invention has the following effects.

(1) A cylindrical filter medium container filled with 85 to 95% of the particulate filter medium, and provided at one end in the axial direction of the filter medium container for introducing water into the filter medium container A water inlet, a water outlet provided at the other end in the axial direction of the filter medium container for discharging the water introduced into the filter medium container, and water introduced from the water inlet in the filter medium container In order to make it flow while drawing a spiral flow toward the water outlet, a spiral water guide provided on the inner peripheral surface of the filter medium container is relatively small, and chlorine and impurities in tap water Can be efficiently removed, and an excellent water purification function can be maintained over a relatively long period of time.

(2) Diffusion in which the water inlet is arranged on the axis and the water introduced from the water inlet is radially guided to the outer periphery of the filter medium container at a position facing the water inlet in the filter medium container. By providing the means, it is possible to uniformly disperse the water introduced from the water inlet toward the entire particulate filter medium filled in the filter medium container, and thus the filtration efficiency can be further improved.

(3) The diffusion means is introduced from the water inlet by providing a diffusion member having a water receiving surface facing the water inlet and a plurality of water holes arranged radially around the water receiving surface. After water is diffused radially on the water entrance surface, the water can be advanced from the plurality of water holes toward the granular filter medium, so that the filtration efficiency can be improved while having a simple structure.

(4) If a net-like body through which the particulate filter medium cannot pass is stretched in the water passage hole of the diffusion member, it becomes possible to provide a water passage hole having an inner diameter larger than that of the granular filter medium. This reduces the amount of filtered water, and the suspended solids contained in tap water introduced from the inlet can be filtered and removed with a mesh body, thus extending the life of the granular filter medium. .

(5) Spiral flow is generated by arranging the water guide portion provided on the inner peripheral surface of the filter medium container so that the inner peripheral surface of the filter medium container rotates once between the water inlet and the water outlet. Because it is possible to generate a necessary and sufficient spiral flow in the filter medium container while minimizing the increase in water flow resistance due to the water flow, it is possible to secure a sufficient amount of purified water without losing the excellent water purification function. .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front perspective view showing a water purifier incorporating a water purifier according to an embodiment of the present invention, FIG. 2 is a side perspective view of the water purifier shown in FIG. 1, and FIG. 3 is an outer cover of the water purifier shown in FIG. FIG. 4 is a front view of a water purifier constituting the water purifier shown in FIG. 1.

  As shown in FIGS. 1 and 2, the water purifier 1 of the present embodiment has a jump box shape as a whole, and includes a lower casing 3 in which a water purifier 9 and the like to be described later are disposed, and an upper surface of the lower casing 3. A detachable upper casing 4 for covering, and a water supply pipe (not shown) for supplying tap water and a water supply pipe for supplying purified water to a destination on the left and right sides, respectively. Elbows 2a and 2b for detachably connecting (not shown) are attached. A plurality of suction cups 6 for locking the water purifier 1 to the installation surface 5 are provided on the bottom surface of the lower casing 3. Since these suction cups 6 are detachable, they can be removed when they are not necessary depending on the use conditions. When the suction cups 6 are removed, the rubber pads 7 provided in the vicinity thereof serve as grounding members.

  As shown in FIG. 3, when the upper casing 4 is removed, a water purifier 9 having an outer appearance fixed on the lower casing 3 in a posture in which the axial center is horizontal by the locking members 8 a and 8 b appears. The water purifier 9 can be attached to and detached from the lower casing 3 together with the locking members 8a and 8b and the elbows 2a and 2b, and when these are detached from the lower casing 3, the state becomes as shown in FIG. Thereafter, when the elbows 2a and 2b screwed to the left and right locking members 8a and 8b are removed, the state shown in FIG. 5 is obtained.

  To the left and right ends of the water purifier 9, a water inlet 10 for introducing tap water into the cylindrical filter medium container 9 a and tap water introduced into the filter medium container 9 a and purified by the granular filter medium 12 are discharged. The water outlet 11 is provided. In addition, as shown in FIG. 6, the water inlet 10 and the water outlet 11 of the right-and-left both ends of the water purifier 9 are the same shapes and structures, and the internal structure of the water purifier 9 is also left-right symmetric so that it may mention later. Therefore, the water inlet 10 and the water outlet 11 are reversed, that is, tap water is introduced from the water outlet 11 into the filter medium container 9a, and the introduced tap water is purified by the granular filter medium 12 and discharged from the water inlet 10. You can also use it like this.

  As shown in FIGS. 7 and 8, a cylindrical filter medium container 9a is movably filled with a granular filter medium 12, and in order to introduce tap water into the filter medium container 9a, the axis S direction of the filter medium container 9a (see FIG. 9) is provided with a water inlet 10 at one end, and the other end in the direction of the axis S of the filter medium container 9a is discharged to discharge the tap water introduced into the filter medium container 9a and purified by the granular filter medium 12. The water outlet 11 is provided in the water. Further, in order to move the tap water introduced from the water inlet 10 in the filter medium container 9a while drawing a spiral flow toward the water outlet 11, a spiral water guide portion 13 is provided on the inner peripheral surface 9b of the filter medium container 9a. .

  As shown in FIG. 9, the water conduit 13 is formed in a shelf plate shape that protrudes from the inner peripheral surface 9 b of the filter medium container 9 a toward the axis S, and the water conduit 13 extends from the water inlet 10 to the water outlet 11. It arrange | positions so that the internal peripheral surface 9b of the filter medium container 9a may rotate once. Moreover, when the water guide part 13 hold | maintains the filter medium container 9a so that the axial center S of the filter medium container 9a may become horizontal, as shown in FIGS. 8-10, the lowest part by the side of the water inlet 10 of the internal peripheral surface 9b The start end 13a is located at the bottom, and the end 13b is located at the lowermost portion on the water outlet 11 side of the inner peripheral surface 9b.

  The water inlet 10 and the water outlet 11 are disposed on the shaft center S of the filter medium container 9b, and the diffusion members 14 and 15 are disposed in the filter medium container 9b at positions facing the water inlet 10 and positions facing the water outlet 11, respectively. Has been. These diffusion members 14 and 15 have the same shape as shown in FIG. 11, and a convex spherical water receiving surface 14a (15a) facing the water inlet 10 (water outlet 11), and as shown in FIG. And 8 egg-shaped water passage holes 14b (15b) arranged radially at equal intervals around the water receiving surface 14a (15a), and the water passage 14b (15b) has a mesh-like body 14c (15c). Is stretched.

  In such a water purifier 9, as shown in FIG. 12, when tap water is introduced from the water inlet 12, the tap water comes into contact with the water receiving surface 15 a of the diffusion member 15, and the filter medium container 9 a along the convex spherical surface. After diffusing radially toward the outer peripheral direction of the filter, it proceeds toward the particulate filter medium 12 in the filter medium container 9a through the eight water passage holes 15b arranged around the water receiving surface 15a. And the tap water which entered the filter medium container 9a flows toward the water outlet 11 while drawing the spiral flow R along the water guide portion 13 on the inner peripheral surface 9b of the filter medium container 9a together with the granular filter medium 12. In such a flow process, the tap water and the granular filter medium 12 are kept in contact with each other while being vigorously stirred, so that chlorine and impurities contained in the tap water are adsorbed and removed by the granular filter medium 12.

  The tap water flowing while drawing the spiral flow R together with the particulate filter medium 12 in the filter medium container 9a passes through the water passage hole 14b of the diffusion member 14 arranged on the outlet 11 side, and then converges toward the water receiving surface 14a. The water is discharged from the water outlet 11 as purified water and used for various purposes.

  As described above, the granular filter medium 12 flows in the filter medium container 9a while drawing the spiral flow R together with the tap water, so that the surface of the granular filter medium 12 is uniformly in contact with the tap water, and "Mizumi" is formed. Therefore, an excellent water purification function can be maintained over a relatively long period of time.

  Moreover, since the granular filter medium 12 should just be able to flow in the filter medium container 9a, it is not necessary to ensure especially the space E for flow in the filter medium container 9a shown in FIG. Therefore, in this embodiment, when the granular filter medium 12 is filled to about 95% of the volume of the filter medium container 9a, the flowability of the granular filter medium 12 can be maintained while the flow space E is minimized, and the filter medium can be maintained. The surplus space in the container 9a is reduced, and the water purifier 9 can be made relatively small.

  In the present embodiment, the particulate filter medium 12 is 75% by weight and 20% by weight of WH2C32 / 60LLSS and WHA28 / 48, which are activated carbons manufactured by Nippon Enviro Chemical Co., respectively. When a mixture of 5% by weight of alumina / silica ceramics manufactured by the company was used, chlorine and impurities in tap water could be removed efficiently. In addition, since the ceramics has a function of finely decomposing clusters of water molecules in tap water, the water purified by the water purifier 9 is soft, gentle to the skin, has no odor, has sensitive skin, atopic constitution, allergy It is excellent in that it does not give a tingling sensation to a constitutional person, and when used for washing hair, there is no squeak after washing, and bath water is less likely to become dirty.

  Even after 650,000 liters of tap water with 1ppm residual chlorine is purified using the water purifier 9, the residual chlorine in the purified water remains at a low value of about 0.12ppm (removal rate of about 88%). It has been found that the purification function can be maintained over a period of time.

  In the water purifier 9, the water inlet 10 is disposed on the axis S, and the tap water introduced from the water inlet 10 is radiated radially toward the outer periphery of the filter medium container 9a at a position facing the water inlet 10 in the filter medium container 9a. As a diffusing means for guiding, a diffusing member 15 having a water receiving surface 15a and a plurality of water passage holes 15b is disposed. For this reason, the tap water introduced from the water inlet 10 contacts the water inlet surface 15a, then diffuses radially, passes through the plurality of water holes 15b arranged around the water receiver surface 15a, and enters the particulate filter medium 12. Thus, the filtration efficiency can be improved while the structure is simple.

  Further, since the mesh body 15c having a mesh size that the granular filter medium 12 cannot pass through is stretched in the water passage hole 15b of the diffusion member 15, the minimum inner diameter of the water passage hole 15b is smaller than the outer diameter of the granular filter medium 12. It is possible to increase the flow rate, thereby reducing the flow resistance of tap water introduced from the water inlet 10 and suppressing the decrease in the amount of filtered water. Furthermore, since the floating substance contained in the tap water introduced from the water inlet 10 can be filtered and removed by the mesh body 15c, the inflow of the floating substance into the filter medium container 9a is greatly reduced. The life can be extended.

  In addition, when clogging occurs in the mesh body 15c after using for a predetermined period, the water inlet 10 and the water outlet 11 are reversely connected to the tap water supply pipe, and the water tap is supplied from the water outlet 11 into the filter medium container 9a. If water is fed in, the clogging substance of the mesh 15c can be removed by the water discharged from the water inlet 10.

  On the other hand, the water guide 13 provided on the inner peripheral surface 9b of the filter medium container 9a makes one rotation of the inner peripheral surface 9b of the filter medium container 9a between the water inlet 10 and the water outlet 11 as shown in FIG. Therefore, it is possible to generate a necessary and sufficient spiral flow R in the filter medium container 9a while minimizing an increase in water resistance caused by the generation of the spiral flow R shown in FIG. A sufficient amount of purified water can be secured without losing the water purification function.

  Moreover, as shown in FIG. 9, when the water conveyance part 13 hold | maintains the filter medium container 9a so that the axial center S may become horizontal, the start end 13a is located in the lowest part by the side of the water inlet 10 of the internal peripheral surface 9b. The terminal end 13b is located at the bottom of the water outlet 11 side. Accordingly, a straight line T connecting the start end 13a and the end end 13b of the water guide section 13 is located at the lowermost part 9c of the filter medium container 9a on the inner peripheral surface 9b of the cylindrical filter medium container 9a, and the water guide section 13 is located on the straight line T. It will not exist. For this reason, there is no inconvenience that the granular filter medium 12 gathers in the lowermost part 9c of the filter medium container 9a due to the action of gravity, and is caught by the water guide section 13 and does not move, so that "Mimizumi" is formed. A decrease in efficiency can be avoided.

  The water purifier according to the present invention can be used to purify tap water used in a general household bathroom or kitchen, but is also widely used in facilities that use tap water such as barbers, beauty salons, and pet shops. Can be used.

It is a perspective front view which shows the water purifier which incorporated the water purifier which is embodiment of this invention. It is a perspective side view of the water purifier shown in FIG. It is a perspective front view which shows the water purifier shown in FIG. 1 in the state which removed the outer cover. It is a front view of the water purifier which comprises the water purifier shown in FIG. It is a front view which shows the water purifier shown in FIG. 4 in the state which removed the elbow. It is a side view of the water purifier shown in FIG. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is a figure which shows the water purifier shown in FIG. 8 in the state which abbreviate | omitted the granular filter medium. It is CC sectional view taken on the line in FIG. (A) is a front view which shows the diffusion member which comprises the water purifier shown in FIG. 10, (b) is DD sectional view taken on the line in the previous figure (a). It is a schematic diagram which shows the use condition of the water purifier shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Water purifier 2a, 2b Elbow 3 Lower casing 4 Upper casing 5 Installation surface 6 Suction cup 7 Rubber pad 8a, 8b Locking member 9 Water purifier 9a Filter medium container 9b Inner peripheral surface 9c Bottom 10 10 Water inlet 11 Water outlet 12 Granular filter medium 13 Portion 13a Start end 13b End 14, 15 Diffusion member 14a, 15a Water receiving surface 14b, 15b Water flow hole 14c, 15c Net body E Flow space R Swirling flow S Axis T Straight

Claims (5)

A cylindrical filter medium container filled with particulate filter medium to 85% to 95% of the volume, and a water inlet provided at one end in the axial direction of the filter medium container for introducing water into the filter medium container; A water outlet provided at the other end in the axial direction of the filter medium container for discharging water introduced into the filter medium container, and water introduced from the water inlet in the filter medium container. A water purifier comprising a spiral water guide portion provided on the inner peripheral surface of the filter medium container for flowing while drawing a spiral flow.   The water inlet is disposed on the axial center, and a diffusion means for guiding the water introduced from the water inlet radially toward the outer periphery of the filter medium container is provided at a position facing the water inlet in the filter medium container. The water purifier according to claim 1.   The water purifier according to claim 2, wherein a diffusing member having a water receiving surface facing the water inlet and a plurality of water holes arranged radially around the water receiving surface is provided as the diffusing means.   The water purifier according to claim 3, wherein a net-like body through which the particulate filter medium cannot pass is stretched in the water passage hole.   The water purifier according to claim 1, wherein the water guide portion is disposed so as to rotate once on an inner peripheral surface of the filter medium container between the water inlet and the water outlet.

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