JP5746492B2 - Water faucet with water purification function - Google Patents

Description

The present invention relates to interchangeably arranged water purification function faucet cartridge for water purification in the gripping portion of the shower head.

  Some faucets used in kitchens, kitchens, washrooms, bathrooms, and the like have a water purifying function and have the ability to purify water and / or hot water discharged during use. In this kind of faucet, Japanese Patent No. 4354597 discloses a cylindrical shape between a water stop valve portion and a water outlet in the faucet so that raw water and purified water can be selectively discharged. A cylindrical water purification cartridge is replaceably arranged in the section, and a purified water passage that passes through the water purification cartridge in the cylindrical section, a raw water passage through which raw water flows as it is, and a switching means for both the passages The one provided with is shown.

  By the way, a cylindrical water purification cartridge generally includes a first water purification unit on one end side in the axial direction and containing activated carbon, and a second water purification unit on the other end side in the axial direction and containing a hollow fiber membrane. In the first water purification unit, the water flows from the outer peripheral surface thereof, reaches the central space in the first water purification unit, and then flows out from the other axial end through the second water purification unit. .

  Therefore, the water purification cartridge occupies the central portion in the cylindrical portion, and in this relation, in the above-mentioned publication, the outer peripheral side of the water purification cartridge is also used as the raw water flow path.

Japanese Patent No. 4354597

  In the above-mentioned publication, since the outer peripheral portion of the water purification cartridge was also used as the raw water flow path, the raw water flows along the outer peripheral surface of the water purification cartridge when the raw water is used. There was a problem that harmful substances caught in the first water purification section of the water purification cartridge flowed into the raw water.

  The present invention has been made in view of the above points, and in spite of the fact that the outer peripheral side of the water purification cartridge is used as a raw water flow path, harmful substances flow into the raw water from the outer peripheral surface of the water purification cartridge. It is an object to provide a faucet with a water purifying function that does not occur.

The present invention includes a spout that includes a raw water introduction part on one end side, a water discharge part on the other end side, and a water purification cartridge that is exchangeably accommodated between the raw water introduction part and the water discharge part. Water passes through the water purification cartridge from the outer peripheral side of the water purification cartridge to the water discharge section, the raw water flow path to the water discharge section without passing through the water purification cartridge, and water passes therethrough. A water faucet with a water purification function comprising a switching unit that switches whether the flow path is the purified water flow path or the raw water flow path, and reaches the water discharge section from the raw water introduction section through the switching section. The raw water flow path includes a flow path partitioned from the outer peripheral surface of the water purification cartridge via a partition wall on the outer peripheral side of the water purification cartridge , and the switching unit is connected to the water purification discharge part of the water purification cartridge. Pass A water purification valve for opening and closing the water purification channel and a raw water valve for opening and closing the raw water flow channel, wherein the water purification valve and the raw water valve are connected to each other via an interlocking member; The water purification valve and the raw water valve, which are integrally movable in the direction, close the purified water flow path and open the raw water flow path when driven in one axial direction, and the purified water flow when driven in the other axial direction. The raw water flow path is closed to close the raw water flow path, and the raw water valve is spring-biased in a direction to close the raw water flow path with respect to the interlocking member and a plurality of provided in the raw water flow path Each of the raw water faucet rods is formed by a plurality of raw water faucet rods that open and close the raw water passage ports, and the plurality of raw water faucet rods are connected to the interlocking member with different clearances with respect to the interlocking member. Is doing.

The purified water valve is also preferably as a spring-biased in the direction to close the the purified water flow path relative to the interlocking member.

  And a push button disposed at the tip of the spout, and a mechanism for holding the push button at a position where the push button is pushed in and a position where the push button is returned, and driving the switching unit according to an operation, It is preferable that the push button for switching between is provided with a display portion indicating the flow path switching state depending on the depth of pressing on the outer surface.

In the present invention, at the time of discharging raw water, in order to flow through the flow path partitioned from the outer peripheral surface of the water quality purification cartridge via the partition wall, even though the outer peripheral side of the water quality purification cartridge is a raw water flow path, Hazardous substances do not flow into the raw water from the outer peripheral surface of the water purification cartridge. In addition, since the opening timing of the plurality of raw water passage openings can be shifted, the water pressure is gradually released and the water pressure at the time of water stoppage is gradually released. In addition to reducing the number of raw water passages at the same time, the water hammer phenomenon that occurs when a large flow rate is stopped instantaneously can be reduced, improving durability. be able to.

It is a longitudinal cross-sectional view of the spout at the time of the purified water discharge setting in an example of embodiment of this invention. It is a longitudinal cross-sectional view of the spout at the time of raw | natural water discharge setting same as the above. FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 and when straight water discharge is set. It is an AA line cross section in FIG. 1, and is a cross-sectional view at the time of watering setting. It is a side view same as the above. It is a front view of the discharge part of a spout same as the above. It is a disassembled perspective view of a spout same as the above. It is a perspective view of the cartridge for water quality purification same as the above. It is a disassembled perspective view of a push button and a latch part same as the above. It is a disassembled perspective view of the switching part same as the above. It is sectional drawing of the raw | natural water faucet stick and the stopper stick base in another example. Furthermore, it is sectional drawing of the raw | natural water faucet stick and the stopper stick base in another example. It is a partial longitudinal cross-sectional view in another example. It is a front view of a discharge part same as the above.

  Hereinafter, the present invention will be described based on an example of the illustrated embodiment. The faucet in the illustrated example is used in a kitchen sink, a washroom, etc. As shown in FIG. 5, water or hot water or hot water is used. A main body 1 having a water stop portion for stopping the mixed water and a connection port 10 in the main body portion 1 and detachable from the raw water passing through the water stop portion are supplied through the flexible hose 3. Since the water purification cartridge 4 is housed in the spout 2, the details of the main body 1 are omitted here.

  The spout 2 formed in a cylindrical shape has a water discharge portion 21 at the lower portion on the tip side, a push button 22 for switching operation between raw water and purified water at the tip surface, and raw water on the side surface of the water discharge portion 21. 1 is provided with a switching rod 23 for switching between discharging straight or showering, as shown in FIG. 1, a main case 25, a valve case 50 fixed in the main case 25, A container is formed by the cylindrical case 26 connected to the rear end side of the valve case 50 and the root side cylindrical case 27 connected to the rear end side of the cylindrical case 26, and the upper decorative cover 20a. The outer face is covered with the lower decorative cover 20b and the base decorative cover 20c.

  The rear end opening of the base-side cylindrical case 27 is fitted to the connection port 10 of the main body 1 so that the flexible hose 3 is inserted from the outer surface of the base-side decorative cover 20c. Thus, the base side cylindrical case 27 is connected in a watertight manner.

  The water purification cartridge 4 is housed in a space surrounded by the tubular case 26 and a root-side tubular case 27 screwed and connected to the rear end side of the tubular case 26 via a cartridge housing case 28. .

  As shown in FIGS. 1 and 8, the water purification cartridge 4 has a hollow fiber membrane 42 and a tube 45 connected to the rear end of the case 40 whose front end is closed by a front end cap 43 having a plug 430. In addition, a cylindrical filter medium 41 made of activated carbon, porous ceramic, or the like is disposed on the outer periphery of the tube 45, and the rear cap 44 is provided at the rear end portion of the tube 45 that is closed at the rear end and has a passage port on the peripheral wall. It is formed as what connected.

  A switching portion 5 for switching between raw water and purified water is disposed in the valve case 50 fixed inside the front end side of the main case 25. As shown in FIG. 10, the switching unit 5 includes a valve body 58 fixed in the valve case 50, a water purification plug rod 54 as a water purification valve, and a plurality of raw water tap rods 55 as raw water valves. And a water purification plug bar biasing spring 57, a return spring 53, a plug bar base 52, and a main plug bar 51. A water purification plug bar 54 is movable in the axial direction at the center of the plug bar base 52. It is attached in a state and is prevented from coming off by a retaining ring 59 shown in FIG. Also, the plurality of raw water faucet bars 55 are connected to the plug bar base 52 by engaging the engaging grooves 550 at one end of each raw water faucet bar 55 with the plurality of notches formed in the peripheral portion of the plug bar base 52. Has been.

  A purified water stopper rod 54 is opposed to a purified water passage port 586 provided in the center of the valve body 58, and a raw water stopper rod is connected to a plurality of raw water passage ports 585 provided at equal intervals in the circumferential direction on the peripheral portion of the valve body 58. 55 are respectively inserted and arranged. An umbrella-shaped packing 56 is attached to the other end surface of the raw water faucet bar 55. Further, the valve body 58 is formed as a double cylinder, and the purified water passage port 586 is formed in the inner cylinder, and a partition partitioning the front and rear in the axial direction is formed between the inner cylinder and the outer cylinder. The raw faucet bar 55 penetrates the partition wall, and the raw faucet bar 55 is in watertight contact with the partition wall by packing.

  The stopper bar base 52 is movable in the axial direction in the valve case 50 in the valve case 50 and is urged away from the valve body 58 by the return spring 53. The water purification plug bar 54 is urged toward the valve body 58 by the water purification plug bar urging spring 57 with respect to the plug bar base 52.

  Therefore, when the stopper bar base 52 approaches the valve body 58 against the return spring 53, the purified water stopper bar 54 closes the purified water passage port 586 under the bias of the purified water stopper bar biasing spring 57. Each raw water faucet bar 55 opens each raw water passage port 585. When the stopper rod base 52 is separated from the valve body 58 by the bias of the return spring 53, each raw water stopper rod 55 closes each raw water passage port 585 under the bias of the return spring 53, and the purified water stopper rod 54 The purified water passage 586 is opened away from the end face opening of the purified water passage 586.

  A ratchet block 6 and the push button 22 are disposed on the distal end side of the valve case 50. As shown in FIG. 9, the ratchet block 6 includes an outer case 61, an inner case 62, and a rotating cap 63, and the outer case 61 is screwed to the tip of the valve case 50. The inner case 62 is fixed to the front end of the main plug bar 51 whose rear end surface is in contact with the plug bar base 52, and is slidable in the axial direction with respect to the outer case 61. The spring bias of the return spring 53 that biases 52 is received via the main plug bar 51. The rotating cap 63 disposed in the outer case 61 is sandwiched between the inner case 62 and the stepped portion 511 on the distal end side of the main plug rod 51 with a required clearance, thereby allowing the main plug rod to 51 and the inner case 62 move in the axial direction, and are rotatable about the axis with respect to the main plug bar 51, the outer case 61 and the inner case 62. Further, the rotating cap 63 has a claw 630 projecting outward from the outer peripheral edge of the rear end flange.

  The push button 22 is connected to the inner case 62 and includes two buttons, a base button 222 and a tip button 221, both of which are formed in different colors.

  When the push button 22 is pushed against the return spring 53, the plug bar base 52 is pushed through the main plug bar 51. Further, the inner case 62 moves in the axial direction together with the push button 22, and the rotating cap 63 also moves in the axial direction. In addition, the inclined surface 621 formed on the rear end surface of the rotating cap 63 facing the flange pushes the inclined surface 631 formed on the flange of the rotating cap 63 to give the rotating cap 63 rotation about the axis. For this reason, when the push button 22 is returned, the rotating cap 63 switches between a state in which the claw 630 protruding from the outer peripheral edge is locked to the step 611 in the outer case 61 and a state in which the claw 630 is locked to the step 612. . Since the steps 611 and 612 are also inclined, the rotation cap 63 rotates around the axis also by sliding contact between the steps 611 and 612 and the claw 630, and the push button 22 is pushed. The locking position of the claw 630 is switched every time.

  If the claw 630 is locked to the step 611, the state in which the push button 22 is pushed is maintained. At this time, the main plug bar 51 is connected to the water purification plug bar via the plug bar base 52. In order to move 54 and the raw water faucet bar 55 to the rear side, the raw water passage port 585 is opened and the purified water passage port 586 is closed as described above.

  If the push button 22 is pushed in again from this state, the claw 630 of the rotary cap 63 is locked to the step 612. At this time, the push spring 22 is pushed by the bias of the return spring 53 via the plug bar base 52 and the main plug bar 51. The button 22 also returns, and the raw water passage 585 is closed and the purified water passage 586 is opened as described above.

  As shown in FIG. 6, the water discharger 21 has three discharge ports, a purified water discharge port 210, a straight discharge port 211, and a water spray port 212, and is operated by the switching rod 23. Built in.

  As shown in FIGS. 3 and 4, the switching valve 7 includes a spring receiver 70 that is connected to an intermediate portion of the switching rod 23 that exposes both ends thereof on both side surfaces of the water discharger 21, and a valve that covers the spring receiver 70. A body 72, a biasing spring 71 interposed therebetween, and a water discharge case 74 that is disposed and fixed inside the main case 50 and has two connection ports 75 and 76. The valve body 72 moves left and right by the axial operation of the switching rod 23, and as shown in FIG. 3, the connection port 76 communicating with the sprinkling port 212 is closed and the connection port 75 communicating with the straight discharge port 211 is opened. As shown in FIG. 4, the connection port 76 is opened and the connection port 75 is closed.

  A space in which the valve body 72 is accommodated communicates with a space 582 on the rear side of the partition wall in the valve body 58 through a communication port 502 shown in FIG. 10 formed in the outer peripheral wall of the valve case 50. The purified water discharge port 210 formed in the main case 25 passes through the communication port 501 shown in FIG. 10 formed in the outer peripheral wall of the valve case 50 and the communication port 581 formed in the outer peripheral wall of the valve body 58. , It communicates with the space in which the water purification plug bar 54 is housed. In addition, a portion provided with the communication port 501 and a portion provided with the communication port 502 in the valve case 50 are partitioned by packing attached to the outer peripheral surface of the valve case 50 and in contact with the inner peripheral surface of the main case 25. .

  When the water stop valve in the main body 1 is opened, the raw water flows into the space surrounded by the cylindrical case 26 and the base side cylindrical case 27 through the flexible hose 3 and in which the water purification cartridge 4 is housed. If the purified water passage port 586 is set in an open state (the state shown in FIG. 1) by operating the push button 22, the raw water passes through the filter medium 41 from the outer peripheral surface of the filter medium 41 and passes through the pipe 45. The purified water is discharged from the plug 430 through the inside and the hollow fiber membrane 42. Here, the plug 430 is fitted inside the plug 280 at the tip of the cartridge housing case 28, and the plug 280 is connected to the purified water passage port 586 of the valve body 58. The water passes through the purified water outlet 586, reaches the purified water outlet 210, and is discharged from the purified water outlet 210.

  As shown in FIG. 2, when the water stop valve of the main body 1 is opened with the push button 22 pushed in, that is, with the raw water passage port 585 opened and the purified water passage port 586 closed, the flexible hose 3 The raw water that has flowed into the space in which the water purification cartridge 4 is accommodated, the outer peripheral surface of the cartridge storage case 28 surrounding the outer periphery of the water purification cartridge 4 via a small space, the cylindrical case 26, and the base side cylindrical shape Through the flow path provided between the inner peripheral surface of the case 27, it reaches the raw water passage port 585, passes through the space 582 on the rear side of the raw water passage port 585 and the partition wall in the valve body 58, and the valve in the switching valve 7. It reaches the storage space of the body 72 and is discharged from the straight discharge port 211 or the sprinkling port 212 through the connection port 75 or the connection port 76 that is selectively opened by the operation of the switching rod 23. That.

  Switching between purified water and raw water and whether raw water discharge is straight discharge or shower discharge from the water spout 212 can be performed at the tip of the spout 2. Further, only the front button 221 of the push button 22 is exposed from the upper decorative cover 20a when discharging the raw water, but the base button 222 having a different color from the front button 221 is also exposed from the decorative cover 20a when discharging the purified water. The push button 22 also serves as a display member for displaying the switching state, and it can be clearly determined whether the purified water discharge state or the raw water discharge state is set.

  The flow of raw water in the vicinity of the water purification cartridge 4 when the raw water discharge is set passes through the flow path defined by the cartridge storage case 28 that functions as a partition wall from the outer peripheral surface of the water purification cartridge 4. For this reason, the substance caught in the filter medium 41 of the water purification cartridge 4 is hardly mixed.

  In addition, the switching unit 5 for switching between purified water and raw water, as described above, the raw water faucet bar 55 closes the raw water passage port 585 while being energized by the return spring 53, and the water purifier bar energizing spring 57. The water purification plug bar 54 closes the water purification passage port 586 in the state of being urged by, and since both are closed in the state of being urged by the spring, they are affected by dimensional variations and backlash of the constituent members. In addition, the raw water passage port 585 and the purified water passage port 586 can be reliably closed, and the raw water is not mixed into the purified water. Moreover, since it does not close with excessive force, damage to a structural member can be prevented and durability and reliability can be improved.

  In the above embodiment, the single return spring 53 that urges the center of the plug bar base 52 also bears the urging of the raw water plug bar 54. However, as shown in FIG. An urging spring 559 may be attached to each of the raw water faucet rods 55 so that the raw water faucet rod 55 closes the raw water passage port 585 in a state where the urging force of the urging spring 559 is received. In the drawing, reference numeral 556 denotes a spring receiver, and the biasing spring 559 is disposed between the stopper bar base 52 and the spring receiver 556.

Further, regarding the axial connection between the stopper bar base 52 and the raw water stopper bar 55, it is also preferable that the plurality of raw water stopper bars 55 have different clearances. As shown in FIG. 12, when the clearance 557 is set, when the plug bar base 52 moves to the valve body 58 side by being pushed by the push button 22, the timing at which each raw water plug bar 55 starts moving can be shifted. As a result, the opening timing of the plurality of raw water passage openings 585 can be shifted. Since the movement of opening the raw water passage 585 is a movement in a direction against the raw water pressure , the water pressure is gradually passed and the water pressure at the time of water stop is gradually released. The operation load of the raw water switching unit 5 can be reduced. In addition, since the plurality of raw water passage openings 585 are not closed at a time, the water hammer phenomenon that occurs when a large flow rate is stopped instantaneously can be reduced, and durability can be improved.

  The difference in movement of the plurality of raw water faucet bars 55 is not limited to the example in which the biasing spring 559 shown in FIG. 12 is provided, and the raw water faucet bar 55 is biased by the return spring 53 described above. This can also be realized by changing the groove width of the engaging groove 550 engaged with the plug bar base 52 in the raw water plug bar 55 to have different clearances.

  FIG. 13 and FIG. 14 show another embodiment. This has substantially the same configuration as the above embodiment, but the purified water is also discharged from the straight discharge port 211 (or the sprinkling port 212) without providing the purified water discharge port 210 dedicated to the purified water. Both the raw water that has passed through the passage port 585 and the purified water that has passed through the purified water passage port 586 pass through the space in which the valve body 72 of the switching valve 7 is disposed.

DESCRIPTION OF SYMBOLS 1 Main-body part 2 Spout 4 Water quality purification cartridge 5 Switching part 6 Ratchet block 7 Switching valve 22 Push button 52 Plug bar base 53 Return spring 54 Water purifier bar 55 Raw water faucet bar 57 Water purifier bar bias spring 58 Valve body

Claims (3)

A water quality purification cartridge having a raw water introduction part on one end side and a water discharge part on the other end side, and having a spout accommodating the water quality purification cartridge in a replaceable manner between the raw water introduction part and the water discharge part. The purified water flow path that passes through the water purification cartridge from the outer peripheral side to reach the water discharge section, the raw water flow path that reaches the water discharge section without passing through the water purification cartridge, and the flow path through which the water passes A water faucet with a water purification function, comprising a switching unit for switching between the purified water flow path and the raw water flow path,
The raw water flow path from the raw water introduction section through the switching section to the water discharge section includes a flow path partitioned from the outer peripheral surface of the water purification cartridge via a partition wall on the outer peripheral side of the water purification cartridge .
The switching unit includes a water purification valve that opens and closes a water purification flow path that communicates with a water purification discharge section of the water purification cartridge, and a raw water valve that opens and closes the raw water flow path, and the water purification valve and the raw water The valve is connected to each other via an interlocking member,
The water purification valve and the raw water valve, which are integrally movable in the axial direction, close the water purification flow path and open the raw water flow path when driven in one axial direction, and water purification when driven in the other axial direction. Open the flow path and close the raw water flow path,
The raw water valve is a plurality of raw water faucet rods that are spring-biased with respect to the interlocking member in a direction to close the raw water flow path and that respectively open and close a plurality of raw water passage ports provided in the raw water flow path. Formed,
The water faucet with a water purifying function , wherein the plurality of raw water faucet bars are connected to the interlocking member in a state having different clearances with respect to the interlocking member . The faucet with a water purifying function according to claim 1, wherein the water purifying valve is spring-biased with respect to the interlocking member in a direction to close the water purifying flow path . A push button arranged at the tip of the spout and a mechanism for holding the push button at a position where the push button is pushed in and a position where the push button is returned, and switching the flow path by driving the switching unit according to an operation. The faucet with a water purifying function according to claim 1, wherein the push button is provided with a display portion indicating a flow path switching state depending on a depth of pushing on an outer surface thereof .

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