JP3708840B2 - Water faucet with water purification function - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a faucet with a water purification function having a function of purifying tap water.
[0002]
[Prior art]
Tap water contains components that cause turbidity such as fine sand and red rust, and components that cause odors such as odors of wood and odor caused by chlorine for sterilization.
So, conventionally, tap water (raw water) is introduced into the interior, passed through a purification filter, and purified water, and then the water purification device that has the function of discharging water from the purified water outlet is configured as a single unit separate from the faucet. Then, this is attached later to the faucet of the faucet, that is, the tip of the water discharge pipe.
However, in the case of this single and retrofitted water purifier, there is a problem that if this is attached to the tip of the water discharge pipe of the faucet, the tip of the water discharge pipe will be unnaturally enlarged and the beauty will be impaired. .
[0003]
On the other hand, as shown in FIG. 10, a water purifier 202 configured independently of the faucet 200 is installed inside a cabinet such as a kitchen, and tap water from the faucet 200 is led to the water purifier 202 here. It is also practiced to purify the water and return it to the faucet 200 to discharge water from the tip (faucet) of the water discharge pipe 204.
[0004]
Although this type of water purifier 202 is called a built-in type, when this water purifier 202 is used, the shape of the tip of the faucet 200, in particular, the water discharge pipe 204, is not changed at all from that of a normal faucet. It is possible to maintain good aesthetics for the portion appearing in.
[0005]
On the other hand, in the case of this type of water purifier 202, if it is installed in the cabinet, the inside of the cabinet becomes complicated, and the storage space inside the cabinet is narrowed by the installation of the water purifier 202.
In recent years, there is a tendency to use the storage space in the cabinet as widely as possible, and there are cases where it is difficult to install this kind of built-in type water purifier 202 in such a situation.
[0006]
On the other hand, a water faucet dedicated to water purification is installed on a counter of a kitchen or the like together with a normal water faucet.
However, in this case, there are two faucets, that is, a normal faucet and a faucet dedicated to water purification, and there is a problem that the space on the counter is widely occupied by the faucets and the cost is increased.
[0007]
Under such circumstances, it has also been proposed to incorporate a mechanism for purifying raw water composed of this type of water purification function, that is, tap water (Japanese Patent Laid-Open No. 2001-17342).
This water faucet with a water purification function houses a purification filter 208 inside a water discharge head 206 that can be drawn out together with a flexible hose, as shown in FIGS. A switching valve 210 for switching between (tap water) and a switching operation section (push button type operation section) 212 are provided, and a switching valve 214 for switching between straight water discharge and shower water discharge at the downstream section and its switching operation section ( Lever-type operation unit) 216.
[0008]
In the faucet with the water purification function, as shown in FIG. 13, first, the push button type switching operation unit 212 is operated to switch the water discharge from the raw water discharge to the purified water discharge or vice versa by the switching valve 210. Further, the lever-type switching operation unit 216 is operated to switch the water discharge from the straight water discharge to the shower water discharge or vice versa by the switching valve 214 located in the downstream portion.
[0009]
[Problems to be solved by the invention]
However, in this faucet with water purification function, as shown in FIG. 14, since the outlets of the raw water and the purified water are the same, it is difficult for the user to understand whether the raw water is currently discharged or the purified water is discharged. Furthermore, a switching valve 210 that switches between raw water and purified water and a switching valve 214 that switches between straight water discharge and shower water discharge are configured as separate valves, and each switching operation unit 212 is also configured. , 216 are separate operation parts, the internal structure of the tip of the water discharge head 206 is complicated, and the operation has to be performed twice.
[0010]
[Means for Solving the Problems]
The faucet with a water purifying function of the present invention has been devised in order to solve such problems.
Thus, in the first aspect of the present invention, the raw water composed of tap water sent through the main valve portion of the faucet body is passed through the purification filter to obtain purified water, and the purified water is discharged from the outlet. In the water faucet with a function, a raw water straight water outlet for straightly discharging the raw water as the water outlet, a raw water shower water outlet for showering the raw water, and a purified water straight water outlet for straightly discharging the purified water are provided separately. And a raw water straight valve portion that opens and closes the raw water straight spout, a raw water shower valve portion that opens and closes the raw water shower spout, and a water purification valve portion that opens and closes the purified water spout at the downstream portion of the purification filter. The raw water passes through the purification filter and reaches the valve body by the movement of the valve body, and the valve body directly without passing through the purification filter. With switching on and throughout the flow, together with the raw water straight water discharge, characterized by comprising providing a switching unit for switching valve and the operation switches the raw water shower water discharge and water purification straight water discharge.
[0011]
According to a second aspect of the present invention, in the first aspect, the purifying filter and the switching valve are built in a water discharge head that can be pulled out or moved together with a flexible hose, and the switching is performed while being exposed to an outer surface of the water discharge head. An operation unit is provided.
[0012]
According to a third aspect of the present invention, in the second aspect, the water discharge head is provided on the tip side of the water discharge pipe main body so as to be able to be taken out, and the water discharge head and the water discharge pipe main body constitute a water discharge pipe in the water faucet. It is characterized by being.
[0013]
According to a fourth aspect of the present invention, in any one of the first to third aspects, the switching valve is a cylinder type valve having a cylindrical shape, and a valve casing that is water-tightly fitted to the valve body. It is characterized by having.
[0014]
According to a fifth aspect of the present invention, in the fourth aspect, the valve body includes the water purification valve portion and the raw water valve portion at different positions in the axial direction. The raw water valve portion includes the raw water straight valve portion and the raw water shower valve portion, and the raw water straight water discharge opening and the raw water shower water discharge opening of the switching valve are opened and closed by rotation of the valve body. It is characterized by switching between straight water discharge and raw water shower water discharge.
[0015]
According to a sixth aspect of the present invention, in any one of the fourth and fifth aspects, the switching operation portion is a rotary operation portion, and the cylindrical valve body is rotated by a rotation operation, so that raw water straight water discharge, raw water shower It is characterized by switching between water discharge and purified water straight water discharge.
[0016]
[Operation and effect of the invention]
As described above, the present invention provides a raw water straight water outlet, a raw water shower water outlet, and a purified water straight water outlet separately, and a valve body integrally including a raw water straight valve portion, a raw water shower valve portion, and a purified water valve portion. According to the present invention, switching between the raw water spouting water and the purified water spouting by moving the valve body of the switching valve by operating the switching operation portion is provided. In addition, switching between straight water discharge and shower water discharge in the raw water discharge can be performed.
[0017]
In the present invention, since raw water straight water discharge, raw water shower water discharge, and purified water straight water discharge are performed through separate water outlets, particularly since raw water and purified water are discharged from separate water outlets, the raw water is currently discharged. The user can immediately determine whether the clean water is discharged or not.
[0018]
In the present invention, since the switching can be performed by a single switching valve and switching operation unit, the structure of the switching valve built-in portion in the faucet can be simplified and reduced in size, Since the required switching operation can be performed by the switching valve and the switching operation unit, the operation is not troublesome, the number of necessary members is small, and the cost can be reduced.
[0019]
Here, the purification filter and the switching valve can be built in a water discharge head that can be pulled out or moved together with a flexible hose, and a switching operation unit can be provided in a state of being exposed to the outer surface. (Claim 2).
Further, the water discharge head is provided so as to be able to be taken out at the distal end side of the water discharge pipe main body, and can constitute the water discharge pipe in the water faucet together with the water discharge pipe main body (Claim 3).
In this case, a water purifying function can be added to a faucet that has been widely used as a kitchen faucet in recent years, that is, a faucet in which a water discharge head can be pulled out together with a flexible hose.
[0020]
In these cases, the switching valve can be a cylinder-type valve having a cylindrical valve body and a valve casing that is water-tightly fitted to the valve body (Claim 4).
By doing in this way, the switching valve which switches straight water discharge and shower water discharge in raw water spout, purified water spout, and raw water spout by a single valve can be constituted simply.
[0021]
In this case, the valve body is provided with a water purification valve section and a raw water valve section at different positions in the axial direction so that the purified water discharge and the raw water discharge are switched by rotation of the valve body, and the raw water valve section Can be provided with a raw water straight valve part and a raw water shower valve part (Claim 5).
On the other hand, the switching operation unit can be a rotary operation unit, and the cylindrical valve body can be rotated by the rotation operation (claim 6).
[0022]
【Example】
Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, 10 is a single lever type faucet (mixed faucet) used as a kitchen faucet and the like, and 12 is a water having a built-in main valve for adjusting the amount of water and temperature of water to be discharged and discharged. A stopper main body 14 is a single lever type operating portion provided on the upper portion thereof so as to be rotatable.
In the faucet 10, the temperature of water discharge is adjusted by rotating the operation unit 14 left and right, and the amount of water discharged and the amount of water discharged are adjusted by rotating the operation unit 14 up and down.
[0023]
A water discharge pipe 16 extends from the water faucet body 12 and has a water discharge pipe main body 18 fixed to the water faucet main body 12 and a water discharge head 20 on the tip side thereof.
Here, the water discharge head 20 can be pulled out from the water discharge pipe main body 18 together with the flexible hose 22 and can be moved in three dimensions in the pulled-out state.
[0024]
The tip of the water discharge head 20 is provided with a lever-type and rotary-type switching operation unit 24 for projecting to the outside for switching operation of raw water straight water discharge, raw water shower water discharge, and purified water straight water discharge, which will be described in detail later. Yes.
[0025]
As shown in FIG. 2, the water discharge head 20 has a grip portion 26 and a head portion 28 on its distal end side. A hose 22 is sealed by a seal member 30 at the base end portion of the grip portion 26. Under watertight connection is fixed.
Here, the hose 22 is inserted into the hose insertion hole 32 formed in the central portion of the water discharge pipe body 18 so as to be slidable in the axial direction.
[0026]
An insertion convex portion 34 is provided at the distal end portion of the water discharge pipe main body 18.
On the other hand, a corresponding insertion recess 36 is formed on the side of the water discharge head 20, and the water discharge head 20 is fitted to the distal end portion of the water discharge pipe main body 18 so that the insertion protrusion 34 is inserted into the insertion recess 36. And it comes to be held.
[0027]
The grip part 26 has a double cylinder structure of an outer cylinder 38 and an inner cylinder 40, and a purification filter 42 for purifying the raw water (tap water) by passing it inside is accommodated.
The purification filter 42 is a member having a cylindrical shape as a whole, and includes a cylindrical porous ceramic filter 44 in the center, and a layer of diatomaceous earth 46 is further provided on the outer surface of the filter 42 as a support. A layer of activated carbon 48 is laminated and a non-woven fabric 50 is wound around the outer peripheral surface thereof.
[0028]
The purification filter 42 has non-water-permeable end caps 52 and 54 at the front and rear ends.
These end caps 52 and 54 are each made of a translucent member. Through these end caps 52 and 54, end faces of the purification filter 42, specifically, a ceramic filter 44, a diatomaceous earth 46 layer, and an activated carbon 48 layer. The end face of the layer of the nonwoven fabric 50 can be visually observed from the outside.
That is, the degree of contamination of each layer of the purification filter 42 can be visually observed through the end caps 52 and 54.
[0029]
Ribs 56 are formed on the outer peripheral surfaces of the end caps 52, 54 at a predetermined interval in the circumferential direction, and the outer peripheral ends of the ribs 56 come into contact with the inner peripheral surface of the inner cylinder 40.
That is, these ribs 56 form a raw water passage 58 </ b> A between the outer peripheral side of the purification filter 42, specifically between the outer peripheral surface of the purification filter 42 and the inner peripheral surface of the inner cylinder 40 in the grip portion 26.
Further, a purified water passage 60 </ b> A is formed inside the ceramic filter 44 in the purification filter 42.
[0030]
As shown in FIGS. 2 and 3, the head 28 has, on its lower surface, a raw water straight water outlet 62 that discharges straight water using raw water as a rectifying bundle, a raw water shower water outlet 64 that discharges raw water as shower water, and The purified water straight water outlet 66 which discharges straight water as a rectification bundle is provided separately.
Further, a raw water straight passage 68, a raw water shower passage 70, and a purified water straight passage 72 are formed in communication with the water discharge ports 62, 64, 66, respectively.
[0031]
A switching valve 74 (see FIG. 4) for switching between raw water straight water discharge, raw water shower water discharge, and purified water straight water discharge is disposed downstream of the purification filter 42 and inside the head portion 28.
The switching valve 74 is a cylinder type valve, and has a stepped and cylindrical valve body 76 as shown in FIGS. 4 and 6, and a valve casing 78 that is watertightly fitted on the valve body 76. are doing.
[0032]
The valve body 76 has a shaft portion 80 protruding in the axial direction, and the base portion 82 and the spacer ring 84 of the lever-type and rotary switching operation portion 24 are fitted to the shaft portion 80 in an integrally rotated state. .
That is, a male spline portion 86 is formed on the outer periphery of the shaft portion 80, while a female spline portion 88 is formed on the inner periphery of the base portion 82 and the spacer ring 84 of the switching operation portion 24, and they are engaged with each other. The shaft portion 80, the base portion 82, and the spacer ring 84 are fitted to each other, and the shaft portion 80, the base portion 82, and the spacer ring 84 are integrally rotated based on the engagement of the spline portions 86 and 88.
Incidentally, a female screw hole 90 is formed in the shaft portion 80, and a fixing screw 92 is screwed into the female screw hole 90, so that the shaft portion 80, that is, the valve body 76 and the switching operation portion 24 are fastened and fixed in the axial direction. .
[0033]
The valve body 76 has a large diameter portion and a small diameter portion formed at different positions in the axial direction. The large diameter portion constitutes the raw water valve portion 94 and the small diameter portion constitutes the water purification valve portion 96. Yes.
The internal space of the raw water valve portion 94 and the internal space of the water purification valve portion 96 are a raw water chamber 98 and a water purification chamber 100, respectively, which are partitioned in a watertight manner in the axial direction by a partition member 102.
[0034]
Note that the open portion at the end on the raw water valve portion 94 side is closed by a closing member 104.
A partition presser 106 having a triangular cross section is formed on the closing member 104, and the partition member 102 is pressed in the axial direction by the partition presser 106.
[0035]
As shown in FIGS. 4 and 6, the valve casing 78 has a water passage opening 108 for allowing the raw water from the raw water passage 58 </ b> A to flow into the raw water chamber 98 inside the raw water valve portion 94, and purified water. A water passage opening 110 for allowing the purified water from the passage 60 </ b> A to flow into the purified water chamber 100 inside the purified water valve portion 96 is formed.
[0036]
The valve casing 78 is also integrally formed with a cylindrical insertion fitting portion 112, and the insertion fitting portion 112 has an O-ring 114 on the inner peripheral surface of the distal end portion of the inner cylinder 40 in the grip portion 26. It is inserted and fitted in a watertight manner.
That is, the valve casing 78 and the inner cylinder 40 of the grip portion 26 are connected in a watertight manner through the insertion fitting portion 112.
[0037]
116 is a connecting pipe that connects the water passage opening 110 formed in the valve casing 78 for allowing the purified water to flow in and the purified water passage 60A in the center of the purification filter 42. A small-diameter portion 120 formed at an eccentric position, and a fitting convex portion 122 provided on the end cap 52 is fitted into the large-diameter portion 118 in a watertight manner via an O-ring 114. Has been.
The small-diameter portion 120 is fitted in a watertight manner through an O-ring 114 in a fitting recess 124 formed in the valve casing 78.
[0038]
Here, as shown in FIGS. 4 and 6, the communication pipe 116 forms a purified water passage 60 </ b> B following the purified water passage 60 </ b> A inside thereof, and more specifically, on the outside thereof, in detail with the insertion fitting portion 112. A raw water passage 58B following the raw water passage 58A is formed therebetween.
[0039]
The valve casing 78 has a raw water straight water discharge opening 126 for communicating the raw water chamber 98 inside the raw water valve portion 94 in the valve body 76 with the raw water straight passage 68 and a raw water shower for communicating with the raw water shower passage 70. The water discharge opening 128 is provided so as to penetrate in the radial direction.
On the other hand, on the water purification valve 96 side, a water purification opening 130 for allowing the water purification chamber 100 to communicate with the water purification straight passage 72 is provided in a state of penetrating in the radial direction.
[0040]
The raw water valve portion 94 in the valve body 76 also serves as a raw water straight valve portion and a raw water shower valve portion. As shown in FIG. 5, the raw water from the opening 108 in the valve casing 78 is supplied to the raw water chamber 98. The water supply opening 132 and the raw water chamber 98 are connected to the raw water straight passage 68 or the raw water shower passage 70 via the raw water straight water discharge opening 126 or the raw water shower water discharge opening 128 in the valve casing 78. For this purpose, a water passage opening 134 is provided in a state of penetrating in the radial direction.
Here, the opening 132 has a long hole shape that is long in the rotation direction.
[0041]
On the other hand, the water purification valve portion 96 has a water passage opening 136 for allowing purified water from the opening 110 in the valve casing 78 to flow into the water purification chamber 100, and the water purification chamber 100 through the water purification opening 130 in the valve casing 78. A water passage opening 138 for communicating with the purified water straight passage 72 is provided in a state of penetrating in the radial direction.
[0042]
Next, the action of the faucet 10 with the water purification function of this example will be specifically described below based on FIG. 7 and FIG.
FIG. 7 (I) and FIG. 8 (I) show a straight water discharge state of the raw water.
At this time, the lever-type and rotary-type switching operation unit 24 is lifted up most, and the switching valve 74 is operated based on the operation of the switching operation unit 24 as shown in FIG. The elongated hole-shaped opening 132 of the raw water valve portion 94 in the body 76 communicates with the opening 108 of the valve casing 78, and the opening 134 in the valve body 76 communicates with the raw water straight water discharge opening 126 of the valve casing 78. .
Further, the water purification valve portion 96 is in a state where the opening 110 of the valve casing 78 is closed.
[0043]
Therefore, under this state, the raw water from the raw water passage 58A formed on the outer peripheral side of the purification filter 42 inside the grip portion 26 reaches the raw water straight passage 68 and the raw water straight outlet 62 via the switching valve 74, and there The water is discharged straight as a rectifying bundle downward.
Naturally, at this time, water is not discharged from the purified water straight water outlet 66.
[0044]
Next, when the switching operation unit 24 is rotated downward from this state to the intermediate position in FIG. 7 (II), the opening 132 and the valve in the valve body 76 are opened as shown in FIGS. 7 (II) and 8 (II). In a state where the communication with the opening 108 of the casing 78 is maintained, the opening 134 in the valve body 76 is in a state where it coincides with the raw water shower water discharge opening 128 of the valve casing 78, where the raw water from the raw water passage 58 </ b> A is now converted into the raw water. The water is guided to the shower passage 70 and the raw water shower spout 64 and is discharged downward as shower water.
As shown in FIG. 8 (II), the water purification valve portion 96 of the valve body 76 in the switching valve 74 is also in a state of blocking the water purification passage at this time, so that the water purification from the water purification straight discharge port 66 is performed. No water is discharged.
[0045]
From this state, when the switching operation unit 24 is further rotated downward as shown in FIGS. 7 (III) and 8 (III), the passage of raw water is performed by the switching valve 74 as shown in these drawings. Is blocked while the water purification passage is opened.
[0046]
At this time, the raw water in the raw water passage 58A is in a state in which the raw water passage is blocked by the switching valve 74, so that the purification filter 42 penetrates in the radial direction by the supply water pressure and enters the purification water passage 60A formed in the center thereof. It arrives.
The raw water is purified by passing through the purification filter 42.
[0047]
Thus, the purified water that has been purified by passing through the purification filter 42 flows into the purified water chamber 100 from the purified water passage 60A inside the purification filter 42 through the opening 110 of the valve casing 78 and the opening 136 in the valve body 76, and further. It flows out from the water purification chamber 100 to the water purification straight passage 72 through the opening 138 of the valve body 76 and the water purification opening 130 of the valve casing 78, and is further discharged straight from the water purification straight water discharge port 66 at the tip downward as a rectifying bundle. .
[0048]
As described above, in the case of the faucet 10 with the water purification function of the present example, the raw water straight water discharge, the raw water shower water discharge, and the water purification straight water discharge are switched by the switching operation of one switching valve 74 as shown in FIG. Are discharged to the outside through separate water discharge ports 62, 64, 66.
That is, by operating the switching operation unit 24 to rotate (move) the valve body 76 of the switching valve 74, switching between the raw water spouting and the purified water spouting and switching between the straight water discharging and the shower water discharging in the raw water spouting can be performed. .
[0049]
In this example, the raw water straight water discharge, the raw water shower water discharge, and the purified water straight water discharge are discharged from the separate water outlets 62, 64, and 66, respectively. Therefore, the raw water and the purified water are particularly separated from the separate water outlets 62, 64, and 66, respectively. Since the water is discharged, the user can immediately determine whether the raw water is discharged or the purified water is discharged.
[0050]
Furthermore, in this example, since the switching can be performed by the single switching valve 74 and the switching operation unit 24, the structure of the built-in portion of the switching valve 74 in the faucet 10 can be simplified and reduced in size. The number of members required for the switching operation is small and the cost can be reduced.
[0051]
In this example, since the switching valve 74 is a cylinder type valve having a valve body 76 and a valve casing 78, the straight water discharge and the shower water discharge in the raw water discharge, the purified water discharge, and the raw water discharge are performed with a single valve. The switching valve 74 to be switched can be easily configured.
[0052]
Although the embodiment of the present invention has been described in detail above, this is merely an example.
For example, in the above example, the raw water valve portion 94 serves as both the raw water straight valve portion and the raw water shower valve portion, but the raw water straight valve portion and the raw water shower valve portion are provided at different positions in the axial direction, It is also possible to control water discharge from the water discharge port 62 and water discharge from the raw water shower water discharge port 64 with the rotation of each valve portion.
[0053]
In the above example, only the purified water straight water outlet 66 is provided for the purified water, but the purified water straight water outlet and the purified water shower water outlet are provided, and the purified water discharge is switched by the rotation of the common valve body. It is possible in some cases.
[0054]
Moreover, although the said Example is an example which provided the purification filter 42, the switching valve 74, and its switching operation part 24 in the water discharge head 20 which can be pulled out with the flexible hose 22 from the water discharge pipe main body 18, this invention is normal. The present invention can be applied to various types of faucets such as a bathroom faucet equipped with a shower head and can be configured in various forms without departing from the gist thereof.
[Brief description of the drawings]
FIG. 1 is a diagram showing an external appearance of a faucet with a water purifying function according to an embodiment of the present invention.
FIG. 2 is a diagram showing an internal structure of a water discharge head according to the same embodiment.
FIG. 3 is a diagram showing the structure shown in FIG.
4 is an enlarged view showing an internal structure of a distal end portion of the water discharge head shown in FIG.
FIG. 5 is an operation explanatory view of the switching valve shown in FIG. 4;
6 is an exploded view showing the main part of FIG.
FIG. 7 is a sectional view showing the operation of the same embodiment together with the operating state of an internal switching valve.
FIG. 8 is a diagram showing the operation of the same embodiment in relation to the operating state of the switching valve and the operating state of the switching operation unit.
FIG. 9 is a diagram schematically showing a switching function by the switching valve of the same embodiment.
FIG. 10 is a view showing a state in which a conventional built-in type water purifier is installed in a cabinet.
FIG. 11 is a view in which a principal part of a known faucet with a water purification function is partially cut away.
12 is a view showing the main part of the water faucet with water purification function of FIG.
13 is a diagram schematically showing a switching function by a switching valve of the faucet with a water purifying function shown in FIGS. 11 and 12. FIG.
14 is a view showing a water discharge state of the faucet with a water purification function of FIGS. 11 to 13; FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Water faucet 12 Water faucet body 16 Water discharge pipe 18 Water discharge pipe main body 20 Water discharge head 22 Hose 24 Switching operation part 42 Purification filter 62 Raw water straight water outlet 64 Raw water shower water outlet 66 Pure water straight water outlet 74 Switching valve 76 Valve body 78 Valve casing 94 Raw water valve (raw water straight valve, raw water shower valve)
96 Water purification valve 126 Opening for raw water straight water discharge 128 Opening for raw water shower water discharge

Claims (6)

In a faucet with a water purification function, the raw water consisting of tap water sent through the main valve part of the faucet body is passed through a purification filter to obtain purified water, and water is discharged from the outlet.
A raw water straight water outlet for straightly discharging the raw water as the water outlet, a raw water shower water outlet for showering the raw water, and a purified water straight water outlet for straightly discharging the purified water, and a downstream portion of the purification filter A valve body integrally including a raw water straight valve portion that opens and closes the raw water straight spout, a raw water shower valve portion that opens and closes the raw water shower spout, and a water purification valve portion that opens and closes the purified water straight spout. By moving, the raw water passes through the purification filter and flows to the valve body and switches to the flow directly to the valve body without passing through the purification filter. A switching valve that switches between shower water discharge and clean water straight water discharge, and a switching operation unit that performs the operation are provided. Water purification function of the faucet. In Claim 1, the said purification filter and the switching valve are incorporated in the water discharge head which can be pulled out or moved with a flexible hose, and the said switch operation part is provided in the state exposed to the outer surface of this water discharge head. A water faucet with a water purification function. The water purification head according to claim 2, wherein the water discharge head is provided so as to be able to be taken out at a distal end side of the water discharge pipe main body, and the water discharge head and the water discharge pipe main body constitute a water discharge pipe in the water faucet. Faucet with function. The switching valve according to any one of claims 1 to 3, wherein the switching valve includes a cylindrical valve body and a valve casing that is water-tightly fitted to the valve body. A water faucet with a water purification function. In Claim 4, the said valve body is equipped with the said water purification valve part and the raw | natural water valve part in the position from which the axial direction differs, and while switching the purified water spouting and the raw water spouting by rotation of this valve body, this raw water valve part Comprises the raw water straight valve portion and the raw water shower valve portion, and opens and closes the raw water straight water discharge opening and the raw water shower water discharge opening of the switching valve by the rotation of the valve body, and the raw water straight water discharge and the raw water shower water discharge A faucet with a water purification function, characterized by being switched. 6. The switching operation unit according to claim 4, wherein the switching operation unit is a rotary operation unit, and the cylindrical valve body is rotated by a rotation operation to switch between raw water straight water discharge, raw water shower water discharge, and purified water straight water discharge. A water faucet with a water purifying function, characterized in that

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