WO2003086979A1

WO2003086979A1 - Water purifier

Info

Publication number: WO2003086979A1
Application number: PCT/JP2003/004669
Authority: WO
Inventors: Hideyuki Maejima
Original assignee: Asahi Co., Ltd.
Priority date: 2002-04-12
Filing date: 2003-04-11
Publication date: 2003-10-23

Abstract

A water purifier (1), comprising a container (2) for storing water, a cover body (3) for closing the upper opening part (2a) of the container, a circulating means (4) suspended from the lower surface of the cover (3) and circulating the water stored in the container (2) by circulating the water on the lower side to the upper side, a tubular guide pipe (46) detachably connected to the lower end of the circulating means (4) and having a tip extended near the bottom part (2b) of the container (2), and a purifying means stored in the guide pipe (46) and purifying the water passing through the inside of the pipe, wherein when the purifying means is replaced, the means together with the guide pipe (46) is replaced, whereby a purification capability can be increased by the purifying means, the replacement operation for the purifying means can be very easily performed, and the water in the container can also be agitated with a simple structure.

Description

Akira Itoda Sho Water purifier Technical field

The present invention relates to a water purifier, and particularly to a relatively simple water purifier that purifies water while circulating water stored in a container. Background art

As a household water purifier, for example, a small-sized simple water purifier that circulates tap water stored in a container in the container and removes harmful substances contained in the tap water by a purifying means has been proposed. (For example, Japanese Patent Application Laid-Open No. 9-108568). Specifically, as shown in FIG. 8, a container 70 in which water W is stored, a lid 71 that closes an upper opening of the container 70, and a lower surface of the lid 71, It is provided with a reflux means 72 for returning the water W near the bottom of the container 70 to the upper side, and a purifying means 73 disposed below the reflux means 72 and for purifying the returned water W. Here, the recirculation means 72 has a screw 74 that rotates using a mainspring panel or the like as a power source, and a cylinder 75 that accommodates the screw 74. Purification means 73 are housed. The cylindrical body 75 has a discharge port 76 formed on the peripheral surface near the upper end, and a suction port 77 formed at the lower end. In addition, a flexible tube 78 is connected to the suction port 77, and its tip (lower end) extends to near the bottom of the container 70. When the screw 74 is rotated by the power source after pouring the water into the container 70, the water W near the bottom of the container 70 is pumped through the tube 78 and guided into the cylindrical body 75. Then, when passing through the purifying means 73 provided in the cylindrical body 75, harmful substances and the like are removed and purified. The water that has passed through the purifying means 73 is discharged so as to overflow from the discharge port 76 of the cylindrical body 75 and mixes with the water W near the water surface. That is, by continuously rotating the screw 74, the water W stored in the container 70 is circulated. Then it is gradually purified. By the way, the purifying means such as filter media, etc., deteriorates the purifying capacity as the use time or the number of times of use increases. Must be replaced. However, in the water purifier 80 described above, the purifying means 73 could not be easily replaced. In other words, the purifying means 73 is housed in the cylindrical body 75 together with the screw 74, and the upper end of the cylindrical body 75 is connected to the lid 71. Removes the cylindrical body 75 from the protrusion 79 formed on the lower surface of the lid 71, and turns the cylindrical body 75 upside down so that it is used from the upper end opening of the cylindrical body 75. Purification means 73 must be removed together with screw 74. When installing a new purifying means, the purifying means 73 and the screw 74 must be inserted in order from the upper end opening of the cylindrical body 75, and the cylindrical body 75 must be inserted into the protruding portion 79. . As described above, in the conventional water purifier 80, since the burden on the user when replacing the purifying means 73 is large, the replacement work is troublesome for the user, and the user is not replaced even if the purification capacity is reduced. There was a risk of using it as is. Further, in the conventional water purifier 80, since the purifying means 73 is accommodated inside the relatively short and small cylindrical body 75, the size of the purifying means 73, especially in the vertical direction (pumping direction), is limited. In some cases, the thickness of the purifying means 73 was limited, and the purifying ability could not be increased. In addition, if the length of the cylindrical body 75 is increased, the above-mentioned inconvenience is solved, but on the other hand, it is difficult to take out the cleaning means 73, and the burden on the operator in the replacement work is further increased. Further, the conventional water purifier 80 is sucked from the lower end of the tube 78 and discharged from the discharge port 76 of the cylindrical body 75, while the tube 78 and the cylindrical body 75 are connected to the container 70.直線 Since it is arranged linearly at the center, when the momentum of the water is weak, the discharged water flows along the outer circumference of the cylindrical body 75 and the tube 78, and again under the tube 78. It was sucked from the edge. That is, the purified water discharged from the discharge port 76 may be recirculated before being sufficiently dispersed. For this reason, the water near the tube 78 and the cylindrical body 75 is purified in a short time, but the water near the inner wall of the container 70 away from these tends to be in a stagnant state and cannot be easily purified. . That is, it took a relatively long time until all the water in the container 70 was purified. In view of the above situation, the present invention has as its first object the provision of a water purifier capable of increasing the purification ability of the purifying means and also allowing the purifying means to be replaced very easily. The second issue is to provide a water purifier that can stir the water in the container. Disclosure of the invention

The present invention has been made to achieve the above object. First, the invention according to claim 1 will be described with reference numerals (with parentheses) used in the description of the best mode described below. The invention according to claim 1 is characterized in that a container (2) for storing water, a lid (3) for closing a top opening (2a) of the container (2), and the lid (3) A reflux means (4) which hangs down from the lower surface of the vessel (2) to circulate the water stored in the vessel (2) by refluxing water on the lower side of the vessel (2) to the upper side; ) Is detachably connected to the lower end of the container (2), and the leading end extends to near the bottom (2b) of the container (2). And a purifying means (4 7) for purifying water passing through the pipe. Is shall. Here, the reflux means is constituted by, for example, a screw capable of generating a water flow by using a rotational force, and a cylindrical casing which accommodates the screw and forms a reflux passage therein. Can be. In this case, the guide tube is detachably connected to the lower end of the casing. Examples of the purification means include activated carbon that removes chlorine and trihalomethane from tap water, and mineral-containing substances that release mineral components into water passing through the guide tube. Therefore, according to the water purifier of the first aspect of the present invention, when the reflux means is operated with an appropriate amount of water injected into the container, water near the bottom of the container is sucked from the lower end of the guide tube. Pass through the guide tube. Since the purifying means is provided inside the guide pipe, the inhaled water is purified by passing through the purifying means. The purified water then passes through the portion where the reflux means is provided and is discharged at the top of the container. Since the guide tube is detachably attached to the lower end of the reflux means, the guide tube containing the purifying means can be easily separated from the reflux means. For this reason, it becomes possible to treat the purifying means and the guide tube accommodating the purifying means as one purifying cartridge. In other words, it is possible to replace the guide tube when replacing the purification means. In addition, since the guide tube extends to near the bottom of the container, the guide tube is formed in a vertically long shape. For this reason, the thickness of the purification means in the vertical direction is less likely to be limited by the length of the guide tube. Next, the invention according to claim 2 will be described with reference numerals (with parentheses) used in the description of the best mode described below. The invention according to claim 2 is described as follows: "The purification means (47) The water purifier (1) according to claim 1, characterized by comprising a plurality of purification members (52) (53) (54) (55) stacked vertically. Is what you do. Therefore, according to the water purifier of the second aspect of the present invention, in addition to the operation of the first aspect of the present invention, the purification ability can be significantly increased by the plurality of laminated purification members. In addition, since the guide tube is formed to be long in the vertical direction as described above, it is possible to sufficiently increase the number of purification members to be stacked. Next, the invention according to claim 3 will be described with reference numerals (with parentheses) used in the description of the best mode described below. The invention according to claim 3 is described as follows. A screw (43) for generating a water flow by rotation, a screw (43), and a substantially cylindrical housing having an opening (38) formed around the screw (43). The container (2) is used in a state where water of a certain level or higher is stored in the container (2) so that the water level is higher than the lower end of the opening (38). The purifier according to claim 1 or claim 2 is characterized by the following. Therefore, according to the water purifier of the third aspect of the invention, in addition to the effect of the first or second aspect of the present invention, when the water surface in the container is filled to a position higher than the lower end of the opening, the opening is opened. At least a part of the screen facing the club will be located underwater. Then, when the screw rotates, the water is returned (pumped) through the casing, and at the same time, the wave motion accompanying the rotation of the screw is transmitted to the water around the casing through the opening. That is, the water around the casing is stirred with the rotation of the screw. Therefore, the water (purified water) discharged near the water surface is efficiently diffused. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a front view showing a configuration of a water purifier according to an embodiment of the present invention, FIG. 2 is a right side view showing a configuration of the water purifier, and FIG. FIG. 4 is a longitudinal sectional view showing the configuration of the section, FIG. 4 is an explanatory view for explaining the flow of water in the water purifier, and FIG. 5 is a view showing a state where the purification cartridge is removed from the water purifier. FIG. FIG. 6 is a cross-sectional view showing a modification of the lid of the water purifier, and FIG. 7 is a front view showing a modification of the purification cartridge of the water purifier. FIG. 8 is an explanatory diagram for explaining a configuration of a conventional water purifier. (Explanation of code)

1 ... water heater, 2 ... container, 2 a ... top opening (top opening), 2 b ... bottom, 3 ... lid, 4 ... reflux means, 5 ... purification cartridge, 3 3 ... reflux casing (casing) ), 38 ... opening, 43 ... screw, 46 ... guide tube, 47 ... purification means, 52 ... mineral content (purification member), 53 ... tourmaline (purification member), 54 ... chlorine Removal material (purification member), 55 ... Activated carbon (purification member) Best mode for carrying out the invention

Hereinafter, a water purifier 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is a front view showing the structure of the water purifier 1, FIG. 2 is a right side view showing the structure of the water purifier 1, and FIG. 3 is a longitudinal sectional view showing the structure of a main part of the water purifier 1. FIG. 4 is an explanatory diagram for explaining the flow of water in the water purifier 1, and FIG. 5 is an explanatory diagram showing a state where the purification cartridge 5 is removed from the water purifier 1. As shown in FIGS. 1 and 2, the water purifier 1 of the present embodiment includes a container 2 in which water is stored, a lid 3 for closing the upper opening 2 a of the container 2, and a lid 3. The apparatus includes a recirculation means 4 for circulating water suspended from the lower surface and stored in the container 2, and a purification cartridge 5 removably connected to a vicinity of a lower end of the recirculation means 4 for purifying water passing therethrough. Since the container 2 of the present embodiment is transparent, the recirculation means 4 and the purifying unit 5 housed in the container 2 are represented by solid lines in FIG. 1, FIG. 2 and FIG. I have. The container 2 has a substantially rectangular parallelepiped appearance with an open upper surface, and is made of a transparent material such as resin or glass. The capacity of the container 2 is not particularly limited, but is preferably about 2 liters for general household use. In other words, by forming a rectangular parallelepiped with a capacity of about 2 liters, it is possible to store and refrigerate ordinary refrigerator food in a refrigerator pocket. Sand In other words, it is possible to easily produce purified cold water without having to transfer it to another container. Near the upper ends of the left and right side surfaces of the container 2, there are provided stoppers 7 for attaching the lid 3 to the upper surface of the container 2 in a watertight state. Since the stopper 7 is well known, a detailed description thereof will be omitted. However, in order to make a brief description, one end (lower end) side is connected to the container 2 via a hinge (not shown). A member with a hook (not shown) formed at the other end (upper end). The catch of the stop 7 is locked to the locking claw 6 (see Fig. 3) formed at the lower side of the lid 3, and then the lower end of the stop 7 is pressed toward the container 2 around the hinge. By rotating, the lid 3 is held in a state where a downward force is applied to the locking claw 6. That is, the lid 3 is pressed against the upper surface of the container 2, and the inside of the container 2 is maintained in a watertight state. The lid 3 is provided with a box-shaped lid casing 9 having an open lower surface. As shown in FIG. 3, the ceiling 10 of the lid casing 9 is provided with a water inlet 11 for water injection and a battery insertion opening 12 for inserting a dry cell D. Annular annular projections 13 and 14 projecting upward are formed so as to surround these, respectively. A male screw (not shown) is formed on the outer peripheral surface of each of the annular projections 13 and 14, and a first cap 15 and a second cap 16 each having a female screw formed on the inner peripheral surface are screwed respectively. Has been. The water inlet 11 is also used when discharging the water in the purified container 2 (for example, when pouring into a glass). In addition, an inner hanging part 17 and an outer hanging part 18 projecting downward so as to surround the water supply port 11 are formed concentrically on the ceiling 10 of the lid casing 9, and an annular shape is interposed therebetween. Packing 19 is inserted. On the other hand, the lower surface opening of the lid casing 9 is closed by a plate-shaped bottom 30, but a water supply port 21 is formed in the bottom 30 at a portion facing the water inlet 11. Further, a cylindrical water supply guide portion 20 is provided upright on the bottom portion 30 so as to surround the water supply port 21, and an upper end of the water supply guide portion 20 is formed in an annular shape formed on the lower surface of the packing 19. It is inserted in the groove. That is, note The water port 11 and the water supply port 21 communicate with each other via a water supply guide section 20. Further, a bottomed battery housing 22 having a battery inlet 12 as an upper end opening is formed in the ceiling 10 of the lid casing 9. The battery housing 22 has a size that allows two dry batteries D to be arranged side by side. Between the battery inlet 12 and the second cap 16, the electrodes of the two dry batteries D are provided. An electrode receiving plate (not shown) for conducting the two is provided. The electric power of the dry cell D is supplied to the control board 23 via an electric wire (not shown), and is used for electric power for driving the motor 25. The control board 23 is fixed to the ceiling 10 by a bracket 24. The motor 25 is disposed substantially at the center of the lid casing 9 and functions as a power source for operating the reflux means 4. A magnet 26 is attached to the rotating shaft of the motor 25, and rotates at a predetermined speed with the operation of the motor 25. As shown in FIG. 2, on the right side of the lid casing 9, an operation switch 28 for instructing the operation of the motor 25, that is, the start and stop of the purifying operation, and the purifying operation are being performed. An operation lamp 29 for notifying the user is provided, and these are electrically connected to the control board 23. On the lower surface of the bottom part 30 of the lid body 3, an attachment part 31 for attaching the reflux means 4 is formed. The mounting portion 31 is a cylindrical member disposed below the magnet 26, and has a male screw (not shown) formed on the outer periphery. On the other hand, the reflux means 4 includes a substantially cylindrical reflux casing 33 screwed to the mounting portion 31 and a reflux / stirring portion 34 housed therein. Specifically, the reflux casing 33 includes an upper screw portion 35 having an internal thread (not shown) formed on an inner peripheral surface thereof, and a lower water channel having a reflux water channel formed therein. A part 36, and four bridging parts 37 formed at 90 ° intervals with respect to the outer peripheral surface of the screwing part 35 and connecting the screwing part 35 and the water channel forming part 36. An opening 38 is formed between the bridge portions 37. In addition, a hemisphere projecting in the centrifugal direction is Are provided. The reflux / stirring unit 34 has both a function of refluxing (pumping) water and a function of stirring water near the water surface stored in the container 2. The reflux / stirring unit 34 includes a transmission unit 41 made of a magnetic material, a screw 43 that rotates via the transmission unit 41 as the magnet 26 rotates, and an inner peripheral surface of the water channel formation unit 36. And a bearing portion 44 that supports the lower end of the rotating shaft 42 in the screw 43. A portion corresponding to the upper half of the screw 43 faces the opening 38 of the reflux casing 33.

The purification cartridge 5 is detachably connected to the water channel forming portion 36 of the reflux casing 33, and has a tubular guide tube 46 whose lower end extends to near the bottom 2 b of the container 2, and a guide tube 46. And a purifying means 47 for purifying water contained in the inside of the pipe and purifying the water passing through the pipe. The guide tube 46 is formed of resin, and a large-diameter portion 48 that is fitted to the water channel forming portion 36 is provided on an upper side thereof. As shown in FIG. 1, the large-diameter portion 48 is provided with a hook-shaped notch engagement groove 49 opposed to the engagement protrusion 39. The engagement groove 49 has three grooves wider than the diameter of the engagement protrusion 39, that is, a vertical groove 49a, a horizontal groove 49b, and a return groove 49c. In addition, near the lower end of the guide tube 46, cut-out suction ports 50 are formed at predetermined intervals in the circumferential direction, and a lattice filter 5 serving as a bottom of the guide tube 46 is formed in the tube. 1 is formed integrally with the guide tube 46 (see FIG. 3). In other words, the lower end of the guide pipe 46 extends to the vicinity of the bottom 2b of the vessel 2, and the gap between the guide pipe 46 and the bottom 2b of the vessel 2 is extremely narrow. Sufficient water suction is ensured by the plurality of formed suction ports 50. The purifying means 47 is composed of four types of purifying members vertically stacked, that is, a mineral-containing material 52, tourmaline 53, a chlorine removing material 54, and activated carbon 55. Mineral inclusions 52 are formed by the bonding of many types of metal and carbon atoms. It is obtained by firing an organic rock mineral, or a mixture of the organic rock mineral and ceramic. According to this, the chlorine component contained in tap water is removed, and at the same time, mineral components such as potassium and magnesium are released to increase the umami as drinking water. Tourmaline 53 causes a weak current to flow in water due to spontaneous polarization to promote ionization of water, and activates the passing water. The chlorine removing material 54 renders free chlorine harmless. Activated carbon 55 has an adsorption function and removes trihalomethanes and chlorine components contained in tap water. Next, a method of using the water purifier 1 of the present embodiment and a method of purifying water will be described with reference to FIGS. 3 and 4. FIG. First, remove the first cap 15 and pour water from the water inlet 11. The injected water W is guided by the water supply guide section 20 and supplied into the container 2. Water is injected at a position where the water level of the water W stored in the container 2 is higher than the lower end L of the opening 38 in the reflux casing 33, preferably, as shown in FIG. It is performed until the position near the upper end H is reached. As a result, at least a part of the screw 43 facing the opening 38 is located in the water. A water level line indicating the optimum water level is displayed on the surface of the container 2, and water is injected based on the water level line. When the operation switch 28 is pressed to instruct the start of operation, the control board 23 drives the motor 25 to rotate the magnet 26. Since the magnetic force of the magnet 26 is transmitted to the transmission part 41 disposed below the bottom part 30, the screw 43 rotates at a constant speed via the transmission part 41. When the screw 43 rotates, the water W near the bottom 2 b of the container 2 is sucked from the suction port 50 of the guide pipe 46 and passes through the guide pipe 46. As shown in Fig. 3, inside the guide tube 46, activated carbon 55, chlorine removal material 54, tourmaline 53, and mineral-containing substances 52 are arranged from the upstream side, Hazardous substances such as chlorine components and trihalomethane are removed from the water, and activated by mineral components and negative ions. The activated water is then discharged from the opening 38 through the reflux casing 33. As described above, the rotation of the screw 43 causes the water W stored in the container 2 to circulate. In the water purifier 1 of the state, since the opening 38 is formed in the upper half of the screw 43, the wave generated by the rotation of the screw 43 flows through the opening 38 around the reflux casing 33. Stir in water. Thereby, the water W (purified water) discharged near the water surface is efficiently diffused. By continuing the circulation and the stirring for a certain period of time, the water W stored in the container 2 is gradually purified and activated, and tasting drinking water is generated. The control board 23 has a timer, and when a certain time (for example, 8 minutes) has elapsed after the start of operation, the operation of the motor 25 is automatically stopped. The operation is also stopped when the operation switch 28 is pressed again before the predetermined time has elapsed. Next, a method of replacing the purification cartridge 5 will be described with reference to FIGS. First, the stopper 7 is removed, and the container 2 and the lid 3 are separated. Since the reflux casing 33 of the reflux means 4 is attached to the bottom 30 of the lid 3, the reflux means 4 and the purification cartridge 5 are taken out of the container 2 together with the lid 3. Thereafter, the guide tube 46 of the purification cartridge 5 is gripped, and the engagement state of the engagement groove 49 with the engagement protrusion 39 is released. That is, the engaging projection 39 moves relatively from the return groove 49 c of the engaging groove 49 to the lateral groove 49 b, and then relatively moves from the lateral groove 49 b to the vertical groove 49 a. The guide tube 46 is moved upward and further turned. Since the upper end of the vertical groove 46 a is open, when the guide tube 46 is moved downward with the engagement protrusion 39 positioned in the vertical groove 46 a, the engagement protrusion 3 The guide tube 46 is separated from the water channel forming portion 36 of the reflux casing 33 without being locked by the lock 9 (the state shown in FIG. 5). That is, the purification cartridge 5 is separated from the reflux casing 33, and the entire purification cartridge 5 can be replaced. When a new purifying power cartridge 5 is installed, the operation is the reverse of the operation for removing it. That is, the guide tube 46 is inserted so that the engagement convex portion 39 is inserted from the upper end of the vertical groove 49a, and moves relatively to the return groove 49c through the vertical groove 49a and the horizontal groove 49b. To the channel formation part 36. As a result, the engagement protrusion 39 and the engagement groove 49 are engaged, and the guide tube 46 is prevented from moving downward and in the turning direction. That is, the state where the purification cartridge 5 is held at the lower end of the reflux casing 33 is _(In this way, in the water purifier 1 described above, since the guide tube 46 and the purifying means 47 are combined and treated as one purifying cartridge 5, the user can use the used purifying water from the reflux casing 33. It is possible to replace the purifying means 47 only by removing the cartridge 5 and then installing a new purifying cartridge 5. Therefore, the replacement work is extremely easy, and the burden on the user can be reduced. Since the guide tube 46 corresponding to the casing of the present invention extends to the vicinity of the bottom 2b of the container 2, the thickness of the individual purification members and the number of the purification members to be laminated are not limited, so that the purification capacity and the like can be improved. Therefore, it is possible to reliably set the purification capacity and shorten the time required for the purification. 4 The water W near the water surface is disturbed by 3 and can be efficiently purified throughout the entire vessel 2. Therefore, the time until all the water W in the vessel 2 is purified is further shortened, and the usability is improved. In particular, since one screw 43 is also used for reflux and stirring, the purified water can be diffused with an extremely simple configuration, and the water purifier 1 is housed in a refrigerator to provide cooling water. In the case of the water purifier, the cooling effect is increased by stirring near the water surface, and the cooling can be performed relatively quickly. Since the water inlet 11 is located on the side of the battery inlet 1 2 side, in other words, on the side distant from the water inlet 11, when water is injected from the water inlet 11 1, water splashes on the surface of the lid casing 9. Also, operation switch 2 8 etc. It is possible to suppress the influence on electric parts, that is, it is possible to reduce the occurrence of malfunctions such as the operation switch 28. In the water purifier 1, the container 2 is formed of a transparent member, and the screw 4 3 Since the opening 38 is formed around the periphery of the screw 43, the rotation of the screw 43 during the purification process can be visually recognized from the outside. The user can be informed through the rotation that the cleaning process is being performed. For this reason, compared to a water purifier in a black box state where the internal structure is not visible, it gives the user a sense of security and a higher expectation of purification. Further, in the water purifier 1 described above, the rotational force is transmitted in a non-contact manner by utilizing the magnetic force. For this reason, it is possible to partition the inside of the lid casing 9 in which the motor 25 is disposed and the inside of the container 2 in which the reflux means 4 are disposed in a watertight manner by the bottom 30. Therefore, it is possible to prevent the motor 25 from malfunctioning due to water scattering or the like. As described above, the present invention has been described with reference to the preferred embodiments. However, the present invention is not limited to these embodiments, and as described below, various forms may be provided without departing from the gist of the present invention. Improvements and design changes are possible. For example, as shown in FIG. 6, a magnet 58 may be provided on the inner peripheral surface of the water supply guide portion 20 of the lid body 57 to allow a magnetic field to pass before water is supplied to the container 2. . Although not shown, a magnet may be provided on the inner peripheral surface of the guide tube 46 in the purification cartridge 5. This makes it possible to separate and remove silica components and the like contained in 7K tap water. Further, as shown in FIG. 7, a plurality of suction ports 61 may be provided from the central portion to the lower end portion of the guide tube 60. By doing so, the suction area is reduced by increasing the total area of the suction port 61, so that the load on the screw 43 is reduced. In the water purifier 1 of the above embodiment, the purifying means 47 has a structure in which four purifying members are laminated, but the type and the number of laminated purifying members are not particularly limited, and the purifying means may have a required purifying ability. It is preferable to set them appropriately. Further, in the above embodiment, the case where the present invention is applied to a relatively small water purifier for home use has been described. It is needless to say that the present invention is applicable. Furthermore, in the water purifier 1 of the above embodiment, the dry battery D is shown as the power supply for driving the motor 25, but a commercial power supply may be used. Industrial applicability

As described above, in the water purifier according to the first aspect of the present invention, since the guide tube is treated as a case of the purification cartridge, the user removes the used guide tube from the reflux means, and then performs a new induction process. The purifying means can be exchanged only by installing a tube. Therefore, the replacement work becomes extremely easy, and the burden on the user can be reduced. In addition, since the thickness of the purification means can be set to a desired thickness according to the purification ability, the purification ability can be reliably improved, and the time required for purification can be reduced. According to the water purifier of the second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the purification capability can be significantly increased by the plurality of laminated purification members, and the time required for purification can be further reduced. Further, by using a plurality of types of purification members, it is possible to remove even more types of harmful substances, and it is also possible to activate water by, for example, mineral components or negative ions. In addition, since a plurality of cleaning members are handled in a state of being stacked in advance, the replacement can be performed by an extremely simple operation as in the case of a single cleaning member, without increasing the burden on the user in the replacement operation. According to the water purifier of the third aspect of the invention, in addition to the effect of the first or second aspect of the invention, the surrounding water is stirred by the return screw, so that the water can be substantially uniformly purified over the entire vessel. For this reason, the time until all the water in the container is purified can be further reduced, and the usability can be improved.

Claims

The scope of the claims

1. A container for storing water,

A lid closing the upper opening of the container,

Reflux means which hangs down from the lower surface of the lid and circulates water stored in the container by refluxing water on the lower side of the container to the upper side;

A tubular guide tube detachably connected to a lower end of the reflux means and having a tip extending to near the bottom of the container;

A purifier that is housed inside the guide pipe and purifies water passing through the pipe.

2. The water purifier according to claim 1, wherein the purifying means comprises a plurality of purifying members vertically stacked.

3. The reflux means is

A screw that generates a water flow by rotation,

A housing that accommodates the screw, a substantially cylindrical casing having an opening formed around the screw,

3. The water purifier according to claim 1, wherein the water is used in a state in which water at a certain level or higher is stored in the container so that a water level is higher than a lower end of the opening. 4.