Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
  • B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
  • B01D24/04—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being clamped between pervious fixed walls
  • B01D24/08—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being clamped between pervious fixed walls the filtering material being supported by at least two pervious coaxial walls
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
  • B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
  • B01D35/30—Filter housing constructions

Definitions

• the present invention comprises an outer case having an inflow port through which raw water flows into one end surface, an outflow port through which purified water flows out to the other end surface, and an inner case accommodated in the outer case, on the outer peripheral surface side.
• a cylindrical filter medium filling portion disposed between the disposed outer filter and the inner filter disposed on the inner peripheral surface side, and a collecting flow path provided on the inner peripheral side of the inner filter.
• a water purifier provided in the inner case, a water tank for storing purified water, an outer case having an outlet for discharging the stored purified water, a raw water tank for storing raw water stored in the outer case, and the outer case And a cylinder disposed between the outer filter disposed on the outer peripheral surface side and the inner filter disposed on the inner peripheral surface side. And a collecting flow path provided on the inner peripheral side of the inner filter.
• raw water can be purified with a shorter filtration length compared to the case where it passes through the filter material filling section in the axial direction. Water purification performance can be improved.
• Patent Document 1 Japanese Unexamined Patent Publication No. 2001-212555 (Fig. 1)
• the present invention has been made in view of the above-described problems, and an object thereof is to provide a water purifier that can supply safe drinking water to a user.
• a water purifier according to the present invention for achieving the above-mentioned object is housed in an outer case having an inlet for flowing raw water into one end surface and an outlet for flowing purified water at the other end surface, and the outer case.
• a cylindrical filter medium filling portion disposed between an outer filter disposed on the outer peripheral surface side and an inner filter disposed on the inner peripheral surface side; and
• the inner case is provided with a collecting flow path provided on the inner peripheral side, and the raw water passes the filter medium filling portion in a radial direction between the outer peripheral flow path provided on the outer peripheral side of the outer filter and the collecting flow path.
• the water purifier purifies the water by passing through the inner case with an opening that allows water to pass in the axial direction of the filter medium filling portion, and the raw water is passed through the opening. It is led to the filter medium filling part, and the obtained purified water is led to the outlet.
• This configuration can be applied to water purifiers such as countertop stationary water purifiers, faucet-direct water purifiers, and pot water purifiers.
• the raw water flows through the filling gap generated on the raw water inlet side in the axial direction of the filter medium filling portion by providing the opening capable of passing water in the axial direction of the filter medium filling portion. Therefore, it is possible to eliminate dead space where water stops and reduce the risk of bacterial propagation.
• a further characteristic configuration of the water purifier according to the present invention has a structure in which the opening is provided on the outlet side, and the outer peripheral flow path is bent in a U shape and communicates with the opening. It is in ⁇ .
• the opening is provided on the outlet side, whereby the outer peripheral flow path has a structure that is bent in a U shape and communicates with the opening.
• the dead space can be eliminated if the water stops due to a dead end, reducing the risk of bacterial propagation and suppressing the deterioration of the water purification performance.
• a water purifier according to the present invention for achieving the above object includes a water storage tank for storing purified water, an outer case having an outlet for discharging the stored purified water, and raw water stored in the outer case.
• a raw water tank for storing water and an inner case that is stored in the outer case and communicates with the raw water tank and into which raw water flows in are provided, and an outer filter disposed on the outer peripheral surface side and an inner filter disposed on the inner peripheral surface side.
• a cylindrical filter medium filling portion disposed between the filter and a collecting flow path provided on the inner peripheral side of the inner filter; and the outer case side of the outer filter and the collecting flow path provided in the inner case.
• This configuration can be used for water purifiers such as pot-type water purifiers, faucet direct-coupled water purifiers, and countertop water purifiers.
• the dead space in which the water stop in the inner case stays can be eliminated, the risk of bacterial propagation can be reduced, and the water purification performance can be prevented from being lowered. Can do. Furthermore, since the water passage in the inner case can be simplified, a simple and inexpensive water purifier can be manufactured. In the conventional structure, water is passed! For this reason, the filter medium specific site can be used effectively by passing water in the axial direction to the filter medium specific site that has not been able to exhibit a sufficient water purification function. Furthermore, since water pressure is applied to the filter medium filling portion in the axial direction from the opening, consolidation to the filter medium filling portion can be accelerated, and thus water purification performance can be improved.
• a further characteristic configuration of the water purifier according to the present invention is that the raw water passes through the filter medium filling portion in a radially inward direction from the outer peripheral side of the outer filter toward the collecting channel.
• the raw water since the flow path is formed from the outside to the inside of the water purification cartridge, the raw water is changed from the outer peripheral flow path having a wide cross section on the outer peripheral side to the collective flow path having a lower cross section on the inner peripheral side. It is possible to demonstrate sufficient water purification performance.
• the flow path is directed to the axial center, the stability of the structure of the water purification cartridge is improved, and the possibility of occurrence of water leakage can be reduced.
• a further characteristic configuration of the water purifier according to the present invention is that a first filter capable of passing water is disposed in the opening.
• a further characteristic configuration of the water purifier according to the present invention is a second filter having a lower water permeability than the inflow side filter of the inner filter or the outer filter between the opening and the filter medium filling portion. Is disposed so as to be slidable in the axial direction of the filter medium filling portion.
• the second filter with low water permeability is pressed and slid in the axial direction by the water pressure due to the inflow of raw water at the opening of the filter medium filling section, and the filter medium is filled. Since the consolidation of the part is accelerated, water purification performance can be improved. In addition, since the second filter is provided, the end surface of the filter medium filling portion in the opening is strongly pressed compared to a structure not provided with the filter, so that consolidation is accelerated. Will improve. In addition, channeling that causes water to flow in large quantities only at specific locations in the passage can be suppressed, and a certain level of water quality can be maintained.
• the end face of the filter medium filling portion can be pressed uniformly, and the end face is kept horizontal with respect to the axial direction, so that the filtration length can be kept constant in any flow path, and always constant. Water quality can be maintained. Furthermore, since the second filter has a structure that allows water to pass therethrough, it is possible to prevent the growth of bacteria by providing a structure that always allows water to pass through the filling gap.
• a further characteristic configuration of the water purifier according to the present invention is that a material whose volume is expanded by passing water is disposed between the opening and the filter medium filling portion.
• the water purification performance can be improved because the consolidation of the filter medium filling portion is accelerated. Moreover, by separating the filter medium and the expansion material, the filtration performance can be maintained higher than when the expansion material is mixed in the filter medium, so that the water purification performance can be improved.
• a further characteristic configuration of the water purifier according to the invention of the present application is that a filtration length for passing and filtering the filter medium filling portion in the axial direction through the opening portion allows water to pass through the filter medium filling portion in the radial direction.
• the filter is longer than the filtration length.
• the filter medium in the filter medium filling portion is configured to flow, the inlet end surface from the axial direction does not maintain a plane perpendicular to the axis, and the filtration length depends on the position of the end surface into which the raw water flows.
• the raw water passes through the filter medium filling part in the axial direction by arranging the end face of the filter medium filling part so that the shortest possible filtration length in the axial direction is equal to or greater than the filtration length in the radial direction. Even so, it is possible to ensure a water quality equivalent to or better than the case of passing in the radial direction.
• the inventors have intentionally propagated bacteria in the structure portion by forming a conventional dead space in the dead space in the water purifier of the conventional structure and the water purifier in the structure of the present application.
• the number of bacteria detected from the discharge tube when the water was passed was measured.
• we obtained experimental results that bacteria were not detected even after a lapse of time in the conventional structure whereas the devised structure of the present invention did not detect the number of bacteria in about 10 seconds after passing water. From this result, by adopting the structure of the present application, it is possible to make the inside of the water purifier difficult to propagate bacteria, and to obtain knowledge that it is a water purifier that can supply purified water with high safety by the user. It was.
• the present invention is based on these findings.
• the water purifier shown in Fig. 1 is a countertop water purifier installed on the kitchen counter. It is composed of a switching valve 2 connected to the faucet 1, a water purifier body 4 to which water is supplied from the switching valve 2 through a water supply hose 3, and a water purifier body 4 filters the received water. And a purified water discharge pipe 8 for introducing the purified water filtered by the purified water cartridge 6 to the purified water discharge port 81 and discharging it.
• the force of the water purification cartridge 6 described later in detail includes an outer case 61 and an inner case 62 accommodated in the outer case 61, and the flow path inside the water purification cartridge 6 allows water to flow without stagnation. Constructed to water.
• the water purification cartridge 6 is formed with an inlet 60 that protrudes downward and communicates with the water supply channel 43 of the water purifier body 4, and an outlet 67 that protrudes upward and is connected to the purified water discharge pipe 8 described later.
• the cylindrical outer case 61 is filtered, the water received in the inner case 62 is filtered from the water supply channel 43 of the water purifier body 4 through the inlet 60, and the filtered water is purified from the outlet 67.
• the water discharge pipe 8 is configured to be supplied.
• the switching valve 2 is a purified water in which the raw water received from the faucet 1 is supplied to the water purifier body 4 through the water supply hose 3 and the purified water is discharged from the purified water discharge port 81 by swinging the switching lever 2a. It is configured to be switchable between a discharge state, a raw water discharge state in which raw water received from faucet 1 is discharged from a raw water discharge port (not shown), and a shower state in which raw water received from faucet 1 is not shown and is discharged from a shower port. RU
• the water purifier main body 4 includes a cylindrical main body casing member 41 and a joint portion 42 provided below the main body casing member 41 to which the water supply hose 3 is connected.
• the section is provided with a water supply channel 43 through which the water supplied from the water supply hose 3 flows.
• the water purification cartridge 6 is housed in an outer case 61 having an inlet 60 for flowing raw water into one end surface and an outlet 67 for flowing purified water at the other end surface in a cartridge casing 77.
• An inner case 62 is provided.
• the inner case 62 has an outer filter 64 that allows water to pass through the outer peripheral side surface, a cylindrical filter medium filling part 65 that purifies the raw water inside the outer filter, and an inner peripheral side surface of the filter medium filling part 65.
• Inner filter 63 that can pass water
• the inner filter 63 has a collecting channel 69 communicating with the outlet 67, and an outer peripheral channel 68 is provided between the outer case 61 and the inner case 62.
• the filter medium filling portion 65 includes a water passage portion 75 that allows water to pass through in the radial direction, an opening portion 74 that can pass water in the axial direction from the end surface on the outlet 67 side, and the opening portion 74.
• a first filter 96 that prevents the filter medium from flowing out, and a partition wall 66 on the inner and outer surfaces on the outlet 67 side are provided.
• a net nonwoven fabric or the like is used for the outer filter 63 and the inner filter 64.
• the raw water supplied to the water purification cartridge 6 is added to the flow path (a) that passes through the filter medium filling section 65 in the radial direction (a), and a part of the raw water passes through the filter medium filling section 65 in the axial direction (b ).
• the raw water passing through the flow path (a) passes through the outer peripheral flow path 68 and passes from the water flow section 75 to the filter medium filling section 65 in the radial direction.
• the raw water passing through the flow path (b) passes through the outer flow path 68 to the outlet 67 side without passing through the water flow section 65, passes through the opening 74, and passes through the filter medium filling section 65 in the axial direction.
• the filtration length L2 of the flow path (b) is configured to be longer than the filtration length L1 of the flow path (a). By doing so, for example, even when the end surface of the raw water inlet of the filter medium filling unit 65 is not perpendicular to the shaft center, the shortest filtration length in the filter medium filling unit 65 is always set to the filtration length L1 or more. The minimum filtration length can be maintained, and the quality of purified water can be maintained above a certain level.
• the water purification cartridge 6 may be configured such that the raw water passes through the filter medium filling portion in the direction of the axial force radial direction and is purified.
• the water purifier shown in FIG. 3 is more water-permeable than the outer filter 64, which is a filter on the inflow side, between the opening 74 and the filter medium filling portion 65.
• the second filter 92 is provided so as to be slidable in the axial direction.
• a guide 93 is provided for the partition wall 66, and the second filter 92 slides with the guide 93 along the partition wall 66 with the filter surface perpendicular to the axial direction.
• a stopper 94 is provided on the side of the opening 74 of the guide 93 so that the sliding of the second filter 92 in the axial direction can be restricted within a certain range.
• the second filter 92 When raw water flows in from the inlet 60, the second filter 92 is subjected to a higher water pressure than the outer filter 64 due to water permeability, and the end face of the raw water inlet in the axial direction of the filter medium filling portion 65 is Press along the guide 93. On the other hand, when the inflow of the raw water stops, the second filter 92 is released from the water pressure and floats in a form of being restrained between the stopper 94 and the raw water inlet end face of the filter material filling portion 65.
• the second filter 92 has a structure that allows water to pass therethrough, a structure in which the filling gap 72 in the conventional structure in Fig. 11 does not exist can be taken, thereby preventing an environment in which bacteria propagate. be able to.
• an inner filter which is an inflow side filter is provided between the opening 74 and the filter medium filling unit 65. Since the water permeability is lower than 63, the second filter 92 may be configured to be slidable in the axial direction.
• water is passed through the raw water inlet end face in the axial direction of the filter medium filling portion 65 downstream of the opening 74. It is provided with a material 95 whose volume is expanded by the above. On the opening 74 side of the material 95, a filter such as a net nonwoven fabric is provided as a stopper 96.
• the material 95 is made of dry ion-exchanged water-absorbing water-absorbing resin, etc., and reaches the maximum volume in 1 to 2 seconds after passing water. Inflates and maintains its expanded form after expansion. However, even in this expanded state, the water permeability of the part is ensured to some extent.
• the consolidation of the filter medium filling unit 65 is always accelerated regardless of whether or not the raw water is flowing in, so the stability of the water purification performance is improved. It can be improved.
• the material 95 uniformly presses the axial raw water inlet end face of the filter material filling section 65, the filtration length can be kept constant, and the raw water that has passed through any filtration passage maintains a certain level of water quality. it can.
• the raw water flows from the collecting channel 69 in the radially outward direction and flows into the opening 74. Moyo.
• the faucet-mounted water purifier has been described, but it may be applied to a pot-type water purifier as shown in FIG.
• the raw water stored in the raw water tank 101 flows into the collecting channel 69 or the opening 74 in the inner case 64.
• the raw water flowing into the collecting channel 69 passes through the inner filter 63, and then is filtered by passing through the filtration length of L1 in the radial direction in the filter material filling unit 65, and then passes through the outer filter 64. It is stored in the water tank 102 provided in the outer case.
• the raw water that has passed through the opening 74 passes through the filter medium filling portion 65 in the axial direction for a certain distance L2, is filtered, passes through the outer filter 64, and is stored in the water storage tank 102.
• the pot type water purifier may include a second filter 92 having a lower water permeability than the inner filter 63 in a form slidable in the axial direction.
• a guide 93 is provided for the partition wall 66, and the second filter 92 is arranged along the partition wall 66 together with the guide 93 so as to slide with the filter surface perpendicular to the axial direction.
• a stopper 94 is provided on the side of the opening 74 of the guide 93 so that the axial sliding of the second filter 92 can be restricted within a certain range.
• the pot-type water purifier is provided with a material 95 whose volume is expanded by passing water at the inlet end surface in the axial direction of the filter medium filling portion 65 on the downstream side of the opening 74. It can also be. A net as a stopper 96 on the opening 74 side of the material 95 A filter such as a nonwoven fabric is provided.
• the pot-type water purifier flows from the raw hydrodynamic outer peripheral flow path 68 stored in the raw water tank 101 and circulates through the filter medium filling portion 65 via the outer filter 64.
• Each of these can be configured to be filtered in a distributed form.
• a filter having a lower water permeability than the outer filter 64 which is an inflow side filter is used.
• a material 95 whose volume is expanded by water flow can be provided at the end face in the axial direction of the filter medium filling section 65 on the downstream side of the opening section 74.
• the water purification cartridge 6 according to the present invention may be integrated with the water purifier, or may have a structure in which only the water purification cartridge 6 can be replaced.
• the water purifier according to the present invention is installed, for example, beside a sink on a kitchen counter in each home, and can be effectively used as a water purifier that can supply safe drinking water by a user.
• FIG. 1 A side sectional view showing a schematic configuration of a water purifier.
• FIG. 2 A side sectional view of a water purification cartridge having a structure in which the collecting channel and the opening communicate with each other in the water purification cartridge of FIG.
• FIG. 3 A cross-sectional side view of a water purification cartridge with a filter in the opening
• FIG. 4 A side sectional view of a water purification cartridge having a structure in which the collecting channel and the opening communicate with each other in the water purification cartridge of FIG.
• FIG. 5 Cross-sectional side view of a water purification cartridge with a material whose volume expands by passing water.
• FIG. 6 Side of the water purification cartridge with a structure where the collecting channel and the opening communicate with each other in the water purification cartridge of Fig. 5 Cross section
• FIG. 7 is a side sectional view showing a schematic configuration of a pot-type water purifier.
• FIG. 8 Depot type water purifier having a structure with a filter in the opening in the pot type water purifier of Fig. 7. Side view of water pot
• ⁇ 10 Side cross-sectional view of a pot-type water purifier in the pot-type water purifier shown in Fig. 7 that has a structure in which raw water passes through the outer channel and the collecting channel.
• FIG. 11 is a side sectional view showing a schematic configuration of a conventional water purifier.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Water Supply & Treatment (AREA)
• Water Treatment By Sorption (AREA)
• Filtration Of Liquid (AREA)

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Publications (1)

Family

ID=38655580

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• 2007
  • 2007-04-27 CN CN200780022748XA patent/CN101472657B/zh not_active Expired - Fee Related
  • 2007-04-27 KR KR1020087027589A patent/KR101322218B1/ko active IP Right Grant
  • 2007-04-27 WO PCT/JP2007/059183 patent/WO2007126059A1/ja active Application Filing
• 2010
  • 2010-04-20 JP JP2010097149A patent/JP5113873B2/ja not_active Expired - Fee Related

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