JP6761661B2 - Faucet and water purification cartridge - Google Patents

Description

The present invention relates to a faucet and a water purification cartridge in which a water purification cartridge can be installed.

When a water purification cartridge having an adsorbent such as activated carbon is used, chlorine in tap water is adsorbed by the adsorbent to become chlorine-free purified water, and when this purified water stays in the faucet, germs are found in the purified water. May be propagated.

In order to deal with this problem, in Patent Documents 1 to 3, a bypass flow path that does not pass through the adsorbent is provided separately from the mainstream flow path that passes through the adsorbent, and a part of the raw water containing chlorine is provided. It is designed to flow directly to the downstream side of the water purification cartridge.

Jitsukaisho 61-22590 Jikkenhei 3-32992 Jikkenhei 5-33885

By the way, in the conventional configuration described in Patent Document 1, the bypass flow path is penetrated into the bottom of the water purifier case, and in the conventional configuration described in Patent Documents 2 and 3, the bypass flow path is activated carbon. It is pierced at the axial position of the part. Therefore, in the configuration described in Patent Document 1, the configuration of the water purifier case becomes complicated, and in the configurations described in Patent Document 2 and Patent Document 3, the configuration of the activated carbon portion becomes complicated. Further, in the configurations of Patent Documents 1 to 3, if the bypass flow path is narrow, dust may be clogged inside the bypass flow path, and therefore, the bypass flow path cannot be narrowed very much. Therefore, a large amount of raw water before purification flows to the downstream side of the filtration part without passing through the filtration part, and is discharged to the outside of the faucet. Therefore, even with purified water, there is a risk of chlorine odor and deterioration of taste.

In addition to this, in the case where granular activated carbon is agglomerated using a binder and shaped to form an activated carbon layer having a predetermined shape, a through channel is formed in the activated carbon layer, and a part of raw water penetrates this layer. There is also one in which a part of the raw water is discharged without being filtered by passing through the flow path. With such a structure, the inner surface of the flow path may collapse, and activated carbon particles, binder fragments, and the like may be mixed into the water discharged from the water discharge port. In addition, as described above, in order to improve the efficiency of production, it is common to manufacture a large coagulated activated carbon and divide it into a size suitable for use. However, if the penetrating flow path is provided, high division accuracy is required so that the penetrating flow path is located at a predetermined position of each divided piece, and the above-mentioned manufacturing efficiency is impaired.

An object of the present invention is to provide a faucet and a water purification cartridge in which a bypass flow path can be easily processed.

In order to achieve the above object, the faucet of the present invention is provided with a flow path in which a water purification cartridge can be detachably accommodated, and the purified water filtered in the water purification cartridge is discharged. Bypassing the main flow path passing through the water purification cartridge, a bypass flow path connecting between the raw water side upstream of the water purification cartridge and the water purification side downstream of the water purification cartridge is provided, and the inner peripheral surface of the flow path is provided with a bypass flow path. The end portion of the water purification cartridge is fitted, and a fitting portion is formed in which the ring on the outer periphery of the water purification cartridge is engaged, and the bypass flow path is placed on the inner peripheral surface of the fitting portion at the position of the ring. It is characterized by being arranged across.

In the above-mentioned faucet configuration, the bypass flow path can be formed only by forming a groove on the inner peripheral surface of the fitting portion of the faucet flow path, and the bypass flow path can be easily processed.
In the water purification cartridge of the present invention, the water purification cartridge is provided with a ring on the outer peripheral surface of the case and is detachably housed in the flow path of the faucet, and the ring is engaged with the inner peripheral surface of the flow path. The outer peripheral surface of the case is provided with a bypass flow path that connects the raw water side and the purified water side of the flow path across the position of the ring.

In the above configuration of the water purification cartridge, the bypass flow path can be formed only by forming a groove on the outer peripheral surface of the case of the water purification cartridge, and the bypass flow path can be easily processed.
Further, in the water purification cartridge of the present invention, the water purification cartridge is provided with a ring on the outer peripheral surface of the case and is housed in the flow path of the faucet, and the ring is engaged with the inner peripheral surface of the flow path. The ring is provided with a bypass flow path that penetrates in the direction of the central axis and connects between the raw water side and the purified water side of the flow path.

In the above configuration of the water purification cartridge, the bypass flow path can be formed only by forming a groove in the seal, and the bypass flow path can be easily processed.

According to the present invention, the effect that the bypass flow path can be easily processed is exhibited.

A side view of a faucet in which a water purification cartridge can be installed. Sectional view of the spout. Sectional drawing of the tip of a spout. FIG. 3 is a sectional view taken along line 4-4 of FIG. Cross-sectional view of the tip of the spout in the modified example. 6-6 sectional view of FIG. Sectional drawing of the tip of a spout in another modified example. 8-8 cross-sectional view of FIG. 7.

Hereinafter, embodiments of a faucet embodying the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the spout 12 extending diagonally upward from the faucet main body 11 installed on the kitchen cabinet 41 or the like is connected to the inflow portion 13 of the water supply port 12 via the flexible hose 14. It is connected to the water source. Then, the water spout 12 is attached to and detached from the faucet main body 11 while the flexible hose 14 is taken in and out. The water spout 12 includes a spout main body 121 and a head portion 122 detachably attached to the tip of the spout main body 121.

A water discharge portion 15 is provided at the lower part of the tip of the head portion 122, and a flow path 16 is provided inside the water discharge port 12 between the water discharge portion 15 and the inflow portion 13, and the flow path 16 is provided from the inflow portion 13. The tap water is discharged from the water discharge unit 15 via the flexible hose 14 and the flow path 16.

A cartridge storage chamber 21 located between the spout main body 121 and the head portion 122 is formed in the flow path 16, and the cartridge storage chamber (hereinafter, simply referred to as a storage chamber) 21 has a substantially cylindrical shape. A water purification cartridge (hereinafter, simply referred to as a cartridge) 51 is detachably housed. A first water passage gap 24 is formed between the base end of the cartridge 51 and the bottom of the storage chamber 21. A ridge 23 that abuts on the outer peripheral surface of the cartridge 51 is formed on the inner peripheral surface of the storage chamber 21 on the spout main body 121 side, and is between the outer peripheral surface of the cartridge 51 and the inner peripheral surface of the storage chamber 21. Is formed with a second water passage gap 26 communicating with the first water passage gap 24.

On the head portion 122 side, a fitting recess 25 as a fitting portion is formed on the top surface on the downstream side of the accommodation chamber 21, and the tip end portion of the cartridge 51 is inserted into the fitting recess 25 to fit. A third water passage gap 29 is formed on the tip end side of the cartridge 51 in the recess 25. A ring 27 made of a rubber material and having a sealing function is wound around the outer peripheral surface of the tip of the cartridge 51. The second water flow gap 26 and the third water flow gap 29 are separated by a ring 27.

Then, the raw water on the upstream side of the cartridge 51 enters the inside of the cartridge 51 from the outer circumference of the cartridge 51 through the first and second water passage gaps 24 and 26, is filtered by the filter medium in the cartridge 51, and becomes purified water. This purified water reaches the inside of the third water passage gap 29 from the tip of the cartridge 51, and is further discharged from the water discharge portion 15 of the head portion 122. Therefore, a main flow path is formed from the first and second water flow gaps 24 and 26 to the third water flow gap 29 through the water purification cartridge 51, and the first and second water flow gaps 24 and 26 are on the raw water side. The third water flow gap 29 constitutes the water purification side. In the present embodiment, the cartridge 51 has a first filtration unit 52 made of activated carbon on the upstream side and a second filtration part 53 made of a dense hollow fiber membrane on the downstream side. The first filtration unit 52 is formed by aggregating activated carbon particles, and the raw water is adsorbed and filtered by the activated carbon, the filtered water flows to the second filtration unit 53, and is finely filtered by the hollow fiber membrane 531. .. The hollow fiber membrane 531 is housed in a cylindrical case 532.

As shown in FIGS. 3 and 4, the main flow path is provided on the inner peripheral surface of the fitting recess 25 so as to be located between the second and third water passage gaps 26 and 29 across the ring 27. A bypass flow path 28 is formed that bypasses and passes through the outer diameter side of the ring 27 to connect the second water passage gap 26 on the raw water side and the third water passage gap 29 on the purified water side.

In the above configuration, it works as follows.
The raw water flows into the storage chamber 21 via the flexible hose 14 and the inflow portion 13. The raw water that has flowed into the storage chamber 21 flows into the cartridge 51 through the first and second water passage gaps 24 and 26. Then, it is filtered and purified in the cartridge 51, and the purified water is discharged from the water discharge portion 15 from the tip opening of the cartridge 51 through the third water passage gap 29.

In this case, most of the raw water that has flowed into the storage chamber 21 is prevented from directly moving into the third water passage gap 29 in the fitting recess 25 by the ring 27 having a sealing function, and flows into the cartridge 51. However, a part of the raw water flows into the third water passage gap 29 via the bypass flow path 28. Therefore, the purified water in the third water passage gap 29 contains raw water containing a small amount of chlorine, and the bactericidal action is maintained even in the purified water on the downstream side of the cartridge 51.

When the filtration capacity of the cartridge 51 is lowered or the flow rate is lowered, the tip portion of the cartridge 51 is removed by removing the head portion 122 from the spout main body 121 as shown by the alternate long and short dash line in FIG. The cartridge 51 can be maintained by being attached to and detached from the fitting recess 25, or can be replaced with a new cartridge 51.

In this embodiment, the following effects can be obtained.
(1) Since raw water containing chlorine is mixed into the purified water in the third water flow gap 29 on the downstream side of the cartridge 51 through the bypass flow path 28, it is in the third water flow gap 29 or on the downstream side thereof. Even if purified water stays in the flow path, it is possible to suppress the growth of germs in the retained purified water.

(2) Since the bypass flow path 28 only has a groove formed on the inner peripheral surface of the fitting recess 25, the number of parts increases, the configuration becomes complicated, and the molding of parts becomes difficult. It can be avoided.

(3) Since the bypass flow path 28 is formed by a groove, the bypass flow path 28 is less likely to be clogged with dust, unlike the case where the bypass flow path having narrow holes is provided.
(4) Therefore, in order to prevent dust clogging in the bypass flow path, it is not necessary to avoid a narrow hole and form a wide hole having a large flow path cross section. Therefore, a large amount of unpurified raw water is not mixed with the purified water and discharged, and the amount of the raw water mixed with the purified water in the third water passage gap 29 is small. Therefore, it is possible to suppress the deterioration of the taste of the purified water discharged from the water discharge unit 15 and the feeling of chlorine odor.

(5) Even if dust is clogged between the bypass flow path 28 and the ring 27 in the ring 27 portion of the bypass flow path 28, the cartridge 51 can be used for maintenance such as cleaning of the cartridge 51 and replacement of the cartridge 51. When you attach or detach the dust, the dust will fall off naturally.

(6) Since it is not necessary to provide a flow path in the portion of the activated carbon, it is possible to prevent the activated carbon and the binder from falling off even if the activated carbon is coagulated.
The present invention is not limited to the above embodiment, and may be embodied in the following aspects.

-As shown in FIGS. 5 and 6, the bypass flow path 28 is provided on the outer peripheral surface of the case 532 of the cartridge 51 so as to straddle the ring 27 and intersect the ring 27. Therefore, in this configuration, the bypass flow path 28 is provided so as to connect the raw water side and the purified water side on the inner diameter side of the ring 27. Also in this configuration, the same effect as that of the embodiment can be obtained.

-As shown in FIGS. 7 and 8, the bypass flow path 28 is provided in the ring 27. The bypass flow path 28 is arranged along the central axis C on a line parallel to the central axis C of the ring 27, and connects between the raw water side and the purified water side. Even in this configuration, the same effect as that of the above-described embodiment can be obtained.

Although a plurality of bypass flow paths 28 are shown in the modified examples of FIGS. 7 and 8, the bypass flow paths 28 are also shown in the embodiments shown in FIGS. 1 to 4 and the modified examples shown in FIGS. 5 and 6. Install in multiple locations.

-As the cartridge 51, the filtration part shall be composed of only activated carbon and an adsorbent such as zeolite.
The present invention is embodied in a faucet in which the ring 27 is mounted on the inner peripheral surface of the fitting recess 25 so that the ring 27 engages with the outer peripheral surface of the cartridge 51.

11 ... Faucet body, 12 ... Water spout, 21 ... Cartridge storage chamber, 24 ... First water passage gap, 25 ... Fitting recess, 26 ... Second water passage gap, 27 ... Ring, 28 ... Bypass flow path, 29 ... 3rd water gap, 51 ... Water purification cartridge, 532 ... Case.

Claims (4)

In a faucet provided with a flow path capable of detachably accommodating a water purification cartridge and discharging purified water filtered in the water purification cartridge.
Bypassing the main flow path passing through the water purification cartridge, a bypass flow path connecting between the raw water side upstream of the water purification cartridge and the water purification side downstream of the water purification cartridge is provided, and the inner peripheral surface of the flow path is provided with a bypass flow path. The end portion of the water purification cartridge is fitted, and a fitting portion is formed in which a ring wound around the outer periphery of the water purification cartridge is engaged, and the bypass flow path is provided on the inner peripheral surface of the fitting portion. A water faucet arranged across the position of the ring. The flow path is provided inside a spout provided in the faucet body, a storage chamber capable of accommodating a water purification cartridge is provided in the flow path, and the fitting portion is arranged at the end of the storage chamber. The faucet according to claim 1. In a water purification cartridge provided with a ring on the outer peripheral surface of the case and detachably housed in the flow path of the faucet, and the ring is engaged with the inner peripheral surface of the flow path, the outer peripheral surface of the case , A water purification cartridge provided with a bypass flow path connecting the raw water side and the purified water side of the flow path across the position of the ring. In a water purification cartridge provided with a ring wound around the outer peripheral surface of the case, which is housed in the flow path of the faucet, and the ring is engaged with the inner peripheral surface of the flow path, the ring includes the ring. A water purification cartridge provided with a bypass flow path that is penetrated in the central axis direction and connects between the raw water side and the purified water side of the flow path.

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