JP2003027547A - Cylinder valve device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compactly constructible cylindrical valve device capable of shortening the axial length. SOLUTION: A main passage 102 is formed on the inside surrounded by a peripheral wall part of a cylindrical part 84 of a valve element 76 in the axial control valve device. A main inflow port 104 for making fluid flow in the main passage 102 is arranged on the axial both ends of the cylindrical part 84. A main outflow port 106 is arranged in a peripheral wall part. A passage passing through the main passage 102 is switched by relative rotation to a valve casing 78 of the valve element 76. A sub-inflow port 112 and a sub- outflow port 116 are arranged in the peripheral wall part of the valve element 76. While forming a sub-passage 120 independent of the main passage 102 a crossingly the inside of the peripheral wall part, a sub-inflow port 124 and a sub-outflow port 126 corresponding to the peripheral wall part of the valve casing 78 are arranged, and a passage passing through the main passage 102 or a sub-passage 120 is switched by rotation of the valve element 76.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cylinder type valve device, and more particularly to a valve device suitable for application to a switching valve in a water purification device.

[0002]

BACKGROUND OF THE INVENTION Tap water contains components such as fine sand and rust that cause turbidity such as red rust, and components that cause odors such as chlorine and mildew due to chlorine for sterilization. Therefore, conventionally, a water purifier having the function of introducing tap water (raw water) into the inside, passing it through a purification cartridge, and then discharging it from the purified water spout is configured as a single unit separate from the faucet. However, this is attached afterwards to the faucet of the faucet, that is, the tip of the water discharge pipe.
However, in the case of this single-piece and retrofitting water purifier, if this is attached to the tip of the water discharge pipe of the faucet, there is a problem that the tip of the water discharge pipe unnaturally becomes large and the aesthetic appearance is impaired. .

On the other hand, as shown in FIG.
A water purifier 202 configured independently of 0 is installed inside a cabinet such as a kitchen, and tap water from the faucet 200 is guided to the water purifier 202 to be purified there. Then, the water is discharged from the tip (faucet) of the water discharge pipe 204.

The water purifier 202 of this type is called a built-in type, but when the water purifier 202 is used, the shape of the faucet 200, especially the tip of the discharge pipe 204 is not different from that of a normal faucet. Therefore, it is possible to maintain a good aesthetic appearance for the portion that appears outside.

On the other hand, in the case of this type of water purifier 202, if the water purifier 202 is installed in the cabinet, the inside of the cabinet becomes complicated, and the installation of the water purifier 202 causes a problem that the storage space inside the cabinet is narrowed. In recent years, there is a tendency to use the storage space in the cabinet as wide as possible, and in such a case, it may be difficult to install the built-in type water purifier 202.

On the other hand, a faucet dedicated to purifying water (a faucet with a water purifying device) is also installed together with an ordinary faucet on a counter such as a kitchen. However, in this case, two faucets, an ordinary faucet and a faucet dedicated to clean water, are required, and there is a problem that the space on the counter is widely occupied by these faucets and the cost is increased.

Under such circumstances, it has been proposed to incorporate a water purifying mechanism of this kind, that is, a mechanism for purifying raw water consisting of tap water into a faucet (Japanese Patent Laid-Open No. 2001-17342).
issue). This water faucet with water purification function (water faucet with a built-in water purification device)
As shown in FIGS. 15 and 16, the cleaning cartridge 208 is housed inside the water discharge head 206 that can be drawn out together with the flexible hose, and the purified water and the raw water (tap water) are switched at the downstream portion thereof. Switching valve device 21
0 and its switching operation part (push button type operation part) 212 are provided, and a switching valve device 214 for switching between straight water discharge and shower water discharge and its switching operation part (lever type operation part) 216 are provided downstream thereof. Is provided.

In this water faucet with a water purifying function, as shown in FIG. 17, first, the push button type switching operation part 212 is operated to change the discharge water from the raw water discharge water to the purified water discharge water by the switching valve device 210. In addition, 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 device 214 located at the downstream thereof.

However, in this faucet with a water purifying function, since the outlets of the raw water and the purified water are the same as shown in FIG. 18, the user can tell whether the raw water is present or is present. There is a problem that it is difficult, and a switching valve device 210 that switches between raw water and purified water, and a switching valve device 2 that switches between straight water discharge and shower water discharge.
14 and 14 are configured as separate valve devices, and the switching operation units 212 and 216 are different operation units, the internal structure of the tip of the water discharge head 206 is complicated and the operation is performed. There is the trouble that it has to be repeated.

Therefore, the present inventors can separately provide a raw water straight spout, a raw water shower spout, and a purified water straight spout, and can switch the spout from each of these spouts with a single valve device. We devised a switching valve device. 19 to 23 show specific examples thereof.

Reference numeral 218 in the drawing denotes a cylinder type switching valve device, which is provided inside the water discharge head 206 on the downstream side of the purification cartridge 208. The cylinder-type switching valve device 218 has a valve body 220 that is generally stepped and has a cylindrical shape, and a valve casing 222 that is watertightly fitted onto the valve body 220.

The valve body 220 has a shaft portion 224 that projects in the axial direction.
The base portion 228 and the spacer ring 230 of the lever-type and rotary-type switching operation portion 226 are connected to the shaft portion 224 so as to be integrally rotated.

A large-diameter portion and a small-diameter portion are formed at different positions in the axial direction of the valve body 220. The large-diameter portion forms the raw water valve portion 232 and the small-diameter portion forms the water purification valve portion 234.
Are configured respectively. The internal space of the raw water valve portion 232 and the internal space of the water purification valve portion 234 are a raw water chamber 236 and a water purification chamber 238, respectively, which form a passage for raw water and purified water. ing.

The open end at the end of the raw water valve 232 is closed by a closing member 242. This closing member 242
A partition presser 244 having a triangular cross section is formed on the
The partition member 240 is axially pressed by the partition presser 244.

As shown in FIGS. 19 and 20, the valve casing 222 is provided with a water passage opening for letting the raw water from the raw water passage 246 into the raw water chamber 236 inside the raw water valve portion 232. Inflow port) 248 and purified water passage 25
A water passage opening (inlet) 252 for allowing purified water from 0 to flow into the water purification chamber 238 inside the water purification valve portion 234 is formed.

The valve casing 222 has a valve body 220.
21. A raw water straight spout opening (outlet) 256 for communicating the raw water chamber 236 inside the raw water valve section 232 with the raw water straight spout 254 shown in FIG. 21, and a raw water shower spout for communicating with the raw water shower spout 258. The opening (outlet) 260 is provided so as to penetrate in the radial direction. On the other hand, on the side of the water purifying valve portion 234, a water purifying opening (outlet) 264 for communicating the water purifying chamber 238 with the water purifying straight outlet 262 is provided so as to penetrate in the radial direction.

The raw water valve portion 232 of the valve body 220.
22 switches between the raw water straight spouting and the raw water shower spouting. As shown in FIG. 22, the raw water from the opening 248 in the valve casing 222 is fed to the raw water chamber 2 as shown in FIG.
An opening (inlet) 26 for passing water for flowing into 36
6, and the raw water chamber 236 through the raw water straight spout opening 256 or the raw water shower spout opening 260 in the valve casing 222 to the raw water straight spout 254 or the raw water shower spout 258. The outlet) 268 is provided so as to penetrate in the radial direction. Here, the opening 266 has a long hole shape elongated in the rotation direction.

On the other hand, the water purifying valve section 234 opens and closes the flow path of the purified water in accordance with the rotation of the valve body 220 to switch the spouted water from the raw water spouting to the pure water spouting. A water passage opening (inlet) 270 for flowing into the chamber 238, and the water purification chamber 23
A water passage opening (outlet) 272 for communicating 8 with the water purification straight outlet 262 through the water purification opening 264 in the valve casing 222 is provided so as to penetrate in the radial direction.

The switching valve device 218 works as follows.
FIG. 23 (I) shows a straight water discharge state of raw water. At this time, the lever-type and rotary-type switching operation part 226 is in a state of being lifted to the uppermost position, and the switching valve device 218 causes the valve element 22 to operate based on the operation of the switching operation part 226.
The opening 266 of the raw water valve portion 232 at 0 in communication with the opening 248 of the valve casing 222 is connected to the valve body 2
The opening 268 in 20 is in communication with the raw water straight spout opening 256 of the valve casing 222. Further, the water purifying valve portion 234 is in a state where the opening 252 of the valve casing 222 is closed.

Therefore, under this state, the raw water from the raw water passage 246 formed on the outer peripheral side of the purification cartridge 208 passes through the switching valve device 218 and the raw water straight spout 25
4, and from there, straight water is discharged downward as a straightening bundle. At this time, naturally, the purified water is not discharged from the purified water straight outlet 262.

Next, from this state, the switching operation unit 226 is shown in FIG.
When it is rotated downward to the intermediate position of 3 (II), as shown in the figure, the communication between the opening 266 of the valve body 220 and the opening 248 of the valve casing 222 is maintained,
The opening 268 in the valve body 220 is in a state of being aligned with the raw water shower water discharge opening 260 of the valve casing 222,
Here, the raw water from the raw water passage 246 is guided to the raw water shower spout 258 this time, and is spouted downward as shower water. Incidentally, as shown in the figure, at this time as well, the valve element 220 in the switching valve device 218 is
The water purification valve section 234 of the
Therefore, the purified water is not spouted from the purified water straight spout 262.

When the switching operation portion 226 is further rotated downward from this state as shown in FIG. 23 (III), the passage of the raw water is shut off by the switching valve device 218 as shown in those figures. Meanwhile, the purified water flow path is opened.

At this time, since the raw water passage in the raw water passage 246 is blocked by the switching valve device 218, the raw water passes through the purification cartridge 208 in the radial direction by the water supply pressure, and the purified water formed at the center thereof. Passage 2
It reaches 50. Then, the raw water is purified by passing through the purification cartridge 208.

The purified water that has passed through the purification cartridge 208 and is purified is purified from the water purification passage 250 inside the purification cartridge 208 through the opening 252 of the valve casing 222 and the opening 270 of the valve body 220, and the purified water chamber 238.
Then, the water flows into the inside of the water purifying chamber 238, the opening 272 of the valve body 220 and the water purifying opening 264 of the valve casing 222, and the straight water is discharged downward as a straightening bundle from the water purifying straight outlet 262.

In the case of this cylinder type switching valve device 218, a single switching valve device 218 and its switching operation portion 226 are provided.
The raw water straight spouting, the raw water shower spouting, and the purified water straight spouting can be switched, the structure of the switching valve built-in portion of the faucet can be simplified and downsized, and the single switching valve device 218 and its Switching operation unit 2
Since the required switching operation can be performed by means of 26, various advantages are obtained such that the operation is not troublesome, the number of required members is small, and the cost is low.

[0026]

The switching valve device 218 described above is used.
Shows an example of a cylinder type valve device, but in the case of this type of cylinder type valve device, a passage (main passage) is usually formed inside with a peripheral wall portion of a cylindrical valve body, A plurality of, in particular, three or more flow paths are provided due to the provision of through openings in the peripheral wall portions of the valve body and the valve casing, and switching of the flow paths through the main passage due to matching or non-matching of the openings. When trying to switch paths, it is necessary to provide through openings at different positions in the axial direction.
Inevitably, the valve element and the valve device become long in the axial direction, and the valve device itself becomes large in size.

In the examples of FIGS. 19 to 23, valves having different functions at different axial positions for switching between raw water spouting and purified water spouting and switching between raw water straight spouting and raw water shower spouting. Parts 232 and 234 are provided,
Through openings 266, 268 and 270, 2 for achieving the required function in the respective valve portions 232 and 234.
72 and 72 are formed on the peripheral wall portion.

If the valve body and the valve device are enlarged in size in the axial direction as described above, the size of the valve device built-in portion of the faucet is increased as a result. FIG. 19-
In the example of FIG. 23, the tip portion of the water discharge head 206 becomes large, which causes a disadvantage that the aesthetics of the faucet is impaired.

The switching valve device for switching between the raw water spouting and the purified water spouting, the switching between the raw water straight spouting and the raw water shower spouting, and the cylinder type valve as the switching valve device of the water purifying device built in the faucet Although the device has been described as an example, this kind of problem is caused when the cylinder type valve device is used in the above-described water purification device or other water purification device which is provided separately from the ordinary faucet, or other This is a problem that can commonly occur when the cylinder type valve device is used in various places for various applications.

[0030]

The cylinder type valve device of the present invention has been devised to solve such a problem. Thus, the invention of claim 1 has (a) a cylindrical portion,
A valve body having a main passage formed inside surrounded by a peripheral wall portion of the cylindrical portion and having a main inlet and a main outlet for letting a fluid into and out of the main passage; and (b) the valve body A cylinder-type valve device having an externally fitted valve casing, wherein the relative rotation of the valve body with respect to the valve casing opens and closes a flow passage through the main passage, controls a flow rate, or switches the flow passage. A sub-inlet and a sub-outlet are provided on the peripheral wall portion of the valve body, and a pipe portion extending over the sub-inlet port and the sub-outlet outlet is provided so as to cross the inside of the peripheral wall portion of the valve body. A sub passage that guides the fluid from the sub inlet to the sub outlet is formed inside, and a sub passage that is independent of the main passage is formed, and a sub wall corresponding to the sub inlet and the sub outlet is formed on the peripheral wall portion of the valve casing. Inlet and secondary outlets are provided,
It is characterized in that the relative rotation of the valve element is adapted to open / close a flow path through the sub-passage, control a flow rate, or switch the flow path.

According to a second aspect of the present invention, in the first aspect, one end portion or both end portions in the axial direction of the cylindrical portion of the valve body are formed in an open shape, and the open shape portion serves as the main inlet, while the valve is formed. A through hole is formed in each of the body and the peripheral wall portion of the valve casing to serve as a main outlet of the valve body and the valve casing.

According to a third aspect of the present invention, in the second aspect, one valve is provided in the valve casing with respect to one main outlet of the valve body.
One or more main outlets are provided at different positions in the rotational direction, and the relative rotation of the valve element causes the main outlet of the valve element to coincide with any of the main outlets of the valve casing. The feature is that switching is performed.

According to a fourth aspect of the present invention, in the third aspect, the auxiliary outlet of the peripheral wall portion of the valve element is located at a rotational position where the main outlet of the valve element does not match any of the main outlets of the valve casing. It is characterized in that the inflow port and the secondary outflow port are respectively aligned with the secondary inflow port and the secondary outflow port of the peripheral wall portion of the valve casing.

According to a fifth aspect of the present invention, the switching valve according to any one of the first to fourth aspects, wherein the cylinder type valve device switches between discharge of raw water consisting of tap water and discharge of purified water after passing through the purification cartridge. It is a device.

According to a sixth aspect of the present invention, in the fourth aspect, the cylinder type valve device is a switching valve device for switching between spouting raw water consisting of tap water and spouting purified water after passing through a purification cartridge. The main passage in the valve body forms a passage for passing the raw water, and the relative rotation of the valve body causes the one main outlet of the valve body to coincide with either of the two main outlets of the valve casing. By switching the raw water straight spouting and the raw water shower spouting, the sub-passage forms a passage for passing the purified water, and the sub-inlet and sub-outlet of the valve body are the sub-inlet of the valve casing. The feature is that the raw water discharge is switched to purified water discharge by matching with the secondary outlet.

[0036]

As described above, according to the present invention, the sub-inlet and the sub-outlet are respectively provided on the peripheral wall portions of the valve body and the valve casing externally fitted to the valve body in the cylinder type valve device, while the valve is provided. A pipe section is provided so as to cross the inside of the body peripheral wall section, and a sub-passage inside the pipe section, which is independent of the main passage, connects the sub-inlet and the sub-outlet in the valve body, and the valve body Is configured to open and close the flow path through the auxiliary passage, control the flow rate, or switch the flow path, and according to the present invention, the cylinder type valve device is configured as a compact one having a short axial length. can do.

In the conventional cylinder type valve device, only the fluid in the main passage formed inside the peripheral wall portion of the valve body is
Since it is designed to flow out to the outside from the outlet provided in the peripheral wall portion, etc., in the case of switching a plurality of flow paths, the outlet for switching is different from the valve body in the axial direction. It is necessary to provide the valve body and the valve device at a different position, and as a result, the valve body and the valve device become long in the axial direction and become large in size. Alternatively, if an outlet or inlet for switching the flow path is provided at the same position in the axial direction, the position where the opening is formed is significantly restricted, and the function for switching the flow path in the valve device, etc. Will be restricted.

However, in the present invention, in addition to the main passage inside the peripheral wall portion of the valve body, the auxiliary passage provided so as to cross the inside of the peripheral wall portion is provided, so that when switching a plurality of flow passages, etc. By properly using the main passage and the sub passage, the axial length of the valve body and the valve device can be shortened. Alternatively, under the same axial length, the valve device can be provided with more functions such as flow path switching.

In the present invention, one end or both ends in the axial direction of the cylindrical portion of the valve body are formed into an open shape to serve as the main inlet, while through holes are provided in the peripheral wall portions of the valve body and the valve casing, respectively. It can be formed to be the main outlet of the valve body and the valve casing (Claim 2). That is, the fluid can be made to flow into the main passage from the axial end portion of the cylindrical portion of the valve body and then to the outside from the main outlet formed in the peripheral wall portion.

In the present invention, two or more main outlets are provided in the valve casing at different positions in the direction of rotation with respect to one main outlet of the valve body, and the relative rotation of the valve body causes the valve body to rotate. The main outlet of the valve casing can be aligned with any one of the main outlets of the valve casing to switch the flow path (claim 3).

In this case, at the rotational position where the main outlet of the valve body is inconsistent with any of the main outlets of the valve casing, the sub-inlet and the sub-outlet of the valve body are respectively inserted into the sub-inlet of the valve casing. , It can be made to coincide with the secondary outlet (claim 4). In such a case, the same or different type of fluid is caused to flow through the main passage and the sub passage, and the valve body is rotated relative to the valve casing so as to flow out from any of at least three outflow ports. You can do it like this. That is, at least three flow paths can be switched.

In the present invention, the cylinder type valve device can be configured as a switching valve device for switching between spouting of raw water consisting of tap water and spouting of purified water after purification (claim 5).

In the present invention, the main passage is defined as a passage for passing raw water in claim 4, and the main outlet of the valve body is aligned with either of the two main outlets of the valve casing by relative rotation of the valve body. By switching between the raw water straight spouting and the raw water shower spouting, the sub-passage serves as a passage for passing purified water, and the sub-inlet and sub-outlet of the valve disc are made to rotate by the relative rotation of the valve disc. It is possible to switch from the raw water discharge to the purified water discharge by matching the secondary inlet and the secondary outlet.

[0044]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a switching valve device of a water purifying device built in a kitchen faucet will be described in detail with reference to the drawings. In FIG. 1, 1 is a cabinet installed in a kitchen, 2 is a sink, 3 is a counter, and a single-lever type mixed faucet (hereinafter simply referred to as a faucet) 10 is installed on the counter 3 in an upright state. ing. In the figure, 4 is a supply pipe for supplying water and hot water to the faucet 10, the lower end of which is connected to the main pipe via a water stopcock 5 and the upper end of which is the faucet of the faucet 10. Each is connected to the main body 12. This faucet body 12
A connecting pipe 6 extends downwardly from the end of the flexible hose 22 and is connected to the connecting pipe 6.

The faucet 10 is provided with a single lever type handle 14 on the top of the faucet body 12, and a water discharge pipe 16 extends from the faucet body 12 toward the upper side of the sink 2. Inside the faucet body 12, as shown in FIG. 3, a main valve 7 for controlling the amount of discharged water and the amount of discharged water and temperature control is built in, and the handle 14 operates for the main valve 7. Are linked together. In the faucet 10, the handle 14 is rotated left and right to adjust the temperature of the discharged water, and the up and down operation is adjusted to adjust the amount of discharged water and the amount of discharged water.

The water discharge pipe 16 has a water discharge pipe base 18 fixed to the faucet body 12, and a water discharge head 20 to which the end of the hose 22 is connected and fixed and which can be drawn out together with the hose 22. A lever-type and rotary-type switching operation unit 24 (see FIG. 2) for switching the raw water straight spouting, the raw water shower spouting, and the purified water straight spouting, which will be described in detail later, protrudes from the tip of the water spouting head 20. It is provided in the state.

As shown in FIG. 4, the water discharge head 2
Reference numeral 0 has a water discharge head main body (grip portion) 26 and a head portion 28 on the tip side thereof. Here, the head portion 28 is formed separately from the water discharge head body 26, and is detachable from the water discharge head body 26. In this example, the cleaning cartridge 42, which will be described later, accommodated inside the head 28 can be replaced by detaching the head 28.

Here, the head 28 is attached to the water discharge head main body 26 in the axial direction of the purification cartridge 42,
In detail, it also has a function as a cartridge retainer which can be pushed leftward in FIG. The hose 22 is watertightly connected and fixed to the water discharge head main body 26 at the base end thereof under the seal of the seal member 30.

As shown in FIG. 5, the hose 22 is axially slid in the hose insertion hole 32 at the center of a cylindrical hose guide 31 fixedly attached to the tip of the water discharge pipe base 18. It is movably inserted. This hose guide 3
1 also has a function of holding the water discharge head 20 by inserting it here. These hose guides 31
Also, the water discharge pipe base 18 has a hose 22 and a hose guide 3
Water draining holes 33 and 35 for discharging the water that has entered through the gap between the water drainage 1 and the outside to the outside are respectively formed.

The water discharge head main body 26 has a double-cylinder structure including a tubular decorative cover (outer cylinder) 38 and an inner cylinder 40, through which raw water (tap water) is allowed to pass in the radial direction. A purification cartridge 42 for purifying this is accommodated.

As shown in FIG. 6, the purification cartridge 42 is a member having a cylindrical shape as a whole, and has a cylindrical porous ceramic filter 44 at the center thereof, which is used as a support. A layer of diatomaceous earth 46 is formed on the outer surface, a layer of activated carbon 48 is further formed on the outer surface, and a nonwoven fabric 50 is wound around the outer peripheral surface.

The purification cartridge 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, and through the end caps 52 and 54, the end faces of the purification cartridge 42, specifically, the ceramic filter 44, the layer of diatomaceous earth 46, and the layer of activated carbon 48. The end surface of the layer of the non-woven fabric 50 can be visually observed from the outside. That is, the degree of contamination of each layer of the purification cartridge 42 can be visually observed through the end caps 52 and 54.

Ribs 56 are formed on the outer peripheral surfaces of these end caps 52 and 54 at predetermined intervals in the circumferential direction. As shown in FIG.
It is designed to come into contact with the inner peripheral surface of 0. That is, by these ribs 56, the outer peripheral side of the purification cartridge 42, more specifically, the outer peripheral surface of the purification cartridge 42 and the water discharge head main body 26.
A raw water passage 58A is formed between the inner cylinder 40 and the inner peripheral surface of the inner cylinder 40. Further, a water purification passage 60A is formed inside the ceramic filter 44 in the purification cartridge 42.

As shown in FIGS. 3 to 5, an emergency shutoff valve 51 is provided at the base end of the water discharge head 20.
More specifically, an emergency shutoff valve 51 is provided at the base end of the water discharge head 20 and at the connecting and fixing portion of the hose 22.

Here, the emergency shutoff valve 51 is a valve that automatically closes and shuts off the flow path when the purification cartridge 42 is disengaged from the mounting position, and has a tubular valve casing 53 and valve body 55. Have The valve casing 53 has one end side (the left end side in the drawing) in the axial direction fixed to the hose 22 and the other end side (the right end side in the drawing) fixed to the water discharge head 20 by a fixing ring 57.

The fixing ring 57 is screwed to the inner cylinder 40 of the water discharge head 20. That is, by screwing the fixing ring 57 into the inner cylinder 40, the valve casing 53 is connected and fixed to the inner cylinder 40 of the water discharge head 20.

The valve body 55 is provided with a shaft portion 59,
A baffle plate 61 is provided at the end of the shaft 59 (on the right end side in the drawing). The biasing force of the spring 63 acts on the baffle plate 61 in the right direction in the figure, and when the purification cartridge 42 is removed as shown in FIG.
Based on the biasing force of this spring 63, the valve is seated on the valve seat 65 of the valve casing 53 and the emergency shutoff valve 51 is closed. That is, the flow passage is blocked by the seating of the valve body 55 on the valve seat 65. However, in the normal state, as shown in FIG. 5A, the purification cartridge 42 pushes the valve body 55 leftward in the figure against the biasing force of the spring 63 via the baffle plate 61, and therefore the emergency shutoff valve The purification cartridge 42 keeps the valve 51 open in the normal state.

The purification cartridge 42 is provided with a convex portion 67 as a valve retainer for retaining the valve element 55 at the axial end portion (the left end portion in the figure), and the convex portion 67 is provided.
Contacts the baffle plate 61 of the valve body 55, and pushes the valve body 55 leftward in the figure against the biasing force of the spring 63.

A female taper-shaped holding portion 69 corresponding to the baffle plate 61 of the valve body 55 is formed on the convex portion 67, and the holding portion 69 is fitted to the male taper-shaped portion of the baffle plate 61. The valve body 55 is held in position in the direction perpendicular to the axis.
That is, the action of the holding portion 69 prevents the valve element 55 from shaking or rattling in the direction perpendicular to the axis when hot and cold water flows through the flow path.

A notch 71 is provided in the contact portion with the valve body 55, specifically, the valve seat 65. The cutout portion 71 constitutes a leak mechanism for leaking the pressure on the upstream side of the emergency cutoff valve 51 in the flow path to the downstream side.
As shown in (C), under the condition that the valve body 55 is seated on the valve seat 65, a slight gap is formed between them by the cutout portion 71, and through this portion, the upstream side of the emergency shutoff valve 51 Pressure leaks to the downstream side.

As shown in FIG. 3, FIG. 4, FIG. 6 and FIG. 7, the head 28 has, on its lower surface, a raw water straight spout 62 for spouting raw water straight as a straightening bundle, and raw water as shower water. A raw water shower spout 64 for shower spouting and a purified water straight spout 66 for straight spouting using purified water as a rectifying bundle are separately provided. 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 respective water outlets 62, 64, 66.

A switching valve device 74 (see FIG. 7) for switching the raw water straight spouting, the raw water shower spouting, and the purified water straight spouting is provided inside the head portion 28 on the downstream side of the purification cartridge 42. There is. The switching valve device 74 is a cylinder type valve device, and its specific configuration is shown in detail in FIGS.

As shown in these figures, the switching valve device 74 has a valve body 76 and a valve casing 78 that is watertightly fitted on the valve body 76. As shown in FIG. 8, an outer cylinder portion 80 and an inner cylinder portion 82 are integrally formed in the valve casing 78, and the outer cylinder portion 80 is formed in the water discharge head body 26.
Is watertightly fitted and connected to the inside of the end of the through an O-ring 114. On the other hand, the inner cylinder portion 82 is the purification cartridge 4
It is watertightly fitted and connected to the outside of a cylindrical fitting convex portion 122 formed at the axial end portion of 2 via an O-ring 114.

In this state, the inner space of the inner tubular portion 82 forms a purified water passage 60B following the purified water passage 60A in the central portion of the purification cartridge 42, and the annular portion between the outer tubular portion 80 and the inner tubular portion 82 is formed. Forms a raw water passage 58B following the raw water passage 58A. A ring-shaped strainer 100 for preventing foreign matters such as dust from entering the raw water passage 58B is attached to the end of the raw water passage 58B.

The valve body 76 has a large-diameter cylindrical portion 84 and a shaft portion 86 which are the main elements thereof. The shaft portion 86 further has a base-side circular portion 88 and a square portion 90, and the spacer ring 94 and the base portion 92 of the switching operation portion 24 are externally fitted to the square portion 90 so as to be integrally rotated. In addition, they are axially fixed by fastening screws 96 in a retaining state. On the other hand, the circular portion 88 of the shaft portion 86 is water-tightly rotatably fitted inside the cylindrical portion 128 formed in the valve casing 78 via the O-ring 114. Reference numeral 98 is a cap for concealing the fastening screw 96.

As shown in FIG. 11, the large-diameter cylindrical portion 84 of the valve body 76 forms the main passage 102 for allowing the raw water to pass through the inner space of the peripheral wall portion. One end of the cylindrical portion 84 in the axial direction is a circular open shape portion and the other end is a half moon shaped open shape portion, each of which forms a main inlet 104 for allowing raw water to flow into the main passage 102. ing. That is, the raw water flowing from the raw water passage 58A inside the water discharge head main body 26 into the raw water passage 58B subsequent thereto flows into the main passage 102 through the main inlets 104.

A main outlet 106 is provided at a predetermined position in the rotation direction on the peripheral wall of the cylindrical portion 84, and the main passage 10 is provided.
The raw water flowing into the inside 2 flows out from the main outlet 106. Correspondingly, raw water is fed to the peripheral wall of the valve casing 78 through the raw water straight passage 6
A first main outlet 108 that leads to the raw water straight spout 62 via 8 and a second main outlet 110 that guides the raw water to the raw water shower spout 64 via the raw water shower passage 70 are provided at positions substantially aligned in the rotational direction. .

In the cylinder type switching valve device 74, the main outlet 106 of the valve body 76 is rotated by the rotation of the valve body 76.
Under the condition that the gas is in agreement with the first main outlet 108 of the valve casing 78, the raw water in the main passage 102 flows to the raw water straight outlet 62 through the main outlet 106 of the valve body 76 and the first main outlet 108 of the valve casing 78. leak. On the other hand, under the condition where the main outlet 106 of the valve body 76 coincides with the second main outlet 110 of the valve casing 78, the main passage 10
The raw water in 2 is the main outlet 106 and the second main outlet 1
It flows out to the raw water shower spout 64 through 10.

The cylindrical portion 84 of the valve body 76 is provided with a sub-inflow port 112 and a sub-outflow port 116 on its peripheral wall portion and at positions separated by 180 ° in the rotational direction. Further, in the inner space of the peripheral wall portion, the pipe portion 1 is arranged so as to cross it.
18 is provided in the direction perpendicular to the axis. The inner space of the pipe portion 118 forms a sub passage 120 for passing purified water, and the sub passage 120 connects the sub inlet 112 and the sub outlet 116. Here, the sub passage 120 is
A passage independent from the inside main passage 102 surrounded by the peripheral wall portion of the cylindrical portion 84 is formed.

On the other hand, in the other valve casing 78, a sub-inflow port 124 and a sub-outflow port 126 penetrating the peripheral wall portion are formed in the rotational direction 18 in correspondence with the sub-flow port 112 and the sub-flow port 116.
They are formed at positions separated by 0 °. Here, the secondary inlet 124 is provided in communication with the purified water passage 60B, and the secondary outlet 126 is provided in communication with the purified water straight passage 72.

In this cylinder type switching valve device 74, the valve body 76 makes the auxiliary inlet 112 coincide with the auxiliary inlet 124 of the valve casing 78, and the auxiliary outlet 116 is the auxiliary outlet of the valve casing 78. When it is in a state of being matched with 126, the purified water sent through the purified water passage 60B flows through the sub passage 120 of the valve body 76 and then flows out to the purified water straight passage 72 through the sub outlet 126 of the valve casing 78,
Then, straight water is spouted from the clean water straight spouting port 66 at the tip thereof.

At this time, the main outlet 106 of the valve body 76 is the first and second main outlets 108, 11 of the valve casing 78.
There is a disagreement with any of 0, and raw water is prevented from flowing out from these main outlets 108 and 110. In FIG. 8, reference numeral 130 is a closing member that closes the opening portion 132 of the valve casing 78.

12 and 13 show the operation of the cylinder type switching valve device 74. The operation of the switching valve device 74 will be described below with reference to these drawings. First of all,
2A and FIG. 13A show a straight water discharge state of raw water. At this time, the switching operation part 24 is in a state of being raised to the highest position, and the switching valve device 74 causes the main outlet 106 of the valve body 76 to move to the first main outlet of the valve casing 78 based on the operation of the switching operation part 24. It is in a state of being matched with 108.

Under this condition, the raw water passages 58A, 58A
The raw water flowing through B flows from the main inlets 104 at both axial ends of the cylindrical portion 84 of the valve body 76 into the main passage 102 on the inner side of the peripheral wall portion, and subsequently in the main outlet 106 of the valve body 76 and the valve casing 78. It flows out from the first main outlet 108 and flows into the raw water straight passage 68, and thereafter, straight water is spouted downward from the raw water straight spout 62 at the lower end. At this time, as shown in FIG. 12 (A), the sub passage 120 in the valve body 76 is in a state of being blocked from the water purification passage 60B on the upstream side. Therefore, at this time, the water spouting is naturally prohibited. It is in a broken state.

Next, from this state, the switching operation unit 24 is operated as shown in FIG.
And when it is rotated downward to the intermediate position in FIG.
2 (B) and FIG. 13 (B), the valve body 76
The rotation of the main outlet 106 causes the valve casing 78 to rotate.
The second main outlet 110 in the state where raw water flows into the raw water shower passage 70 through the main outlet 106 and the second main outlet 110.
After that, shower water is discharged downward from the raw water shower water discharge port 64 at the lower end.

From this state, FIG. 12C and FIG.
When the switching operation unit 24 is rotated downward to the lowermost end as shown in (C), further rotation of the valve body 76 causes the main outlet port 106 to move its main outlet 106 to the valve casing as shown in those figures. The first main outlet 108 and the second main outlet 110 of the valve 78 are not in agreement with each other, and the auxiliary inlet 112 of the valve body 76 is also in a non-matching state.
And the sub outlet 116 are in a state of being aligned with the sub inlet 124 and the sub outlet 126 of the valve casing 78, respectively. Here, the sub passage 120 provided in the valve body 76 is provided.
Is in communication with the upstream water purification passage 60B.

In this state, since the flow path of the raw water is blocked by the switching valve device 74, the raw water passes through the purification cartridge 42 from the raw water passage 58A in the radial direction to the water purification passage 60A at the center thereof. Upon arrival (the raw water is purified by passing through the purification cartridge 42 at this time), the purified water in the purified water passage 60A flows into the sub passage 120 of the valve body 76 through the purified water passage 60B on the head 28 side.

The purified water flowing into the sub passage 120 subsequently flows into the purified water straight passage 72 through the sub outlet 116 in the valve body 76 and the sub outlet 126 in the valve casing 78, and then the purified water straight outlet 66 at the lower end. Is spouted straight downward.

In the switching valve device 74 of the present embodiment as described above, in addition to the main passage 102, the auxiliary passage 12 independent of the main passage 102 is provided.
Since 0 is provided, the axial length can be shortened as compared with the conventional cylinder type valve device, and thus the switching valve device 74 can be configured compactly. Further, since the switching valve device 74 can be made compact with a short axial length, the part where the switching valve device 74 is built in the faucet, more specifically, the part where the switching valve device 74 is built in the water purifier built in the faucet is made compact. It can be configured, and its aesthetic appearance can be improved.

Although the embodiment of the present invention has been described in detail above, this is merely an example. For example, the above example is an example in which the cylinder type valve device of the present invention is applied to the switching valve device 74 of the water purifying device built in the faucet, but the cylinder type valve device of the present invention is a water purifying device of various other forms. Alternatively, it can be applied to various uses other than the water purification device and as a valve device of the device.

In the above example, the cylindrical portion 84 of the valve body 76
Although both axial ends of the are configured as the main inlet 104 and the through-hole formed in the peripheral wall is configured as the main outlet 106,
While forming the main inlet at one end in the axial direction,
It is also possible to form a main outlet at the other end. In this case, the main outlets may be provided at two positions on the other end in the axial direction, or may be provided on each of the other end in the axial direction and the peripheral wall. Alternatively, it is possible to form the main inlet on the peripheral wall portion and provide the main outlet on the axial end portion in some cases.

Furthermore, the pipe portion 1 of the valve body 76 is
It is also possible to branch 18 into two or more inside the peripheral wall portion so that the fluid flowing from the sub-inflow port is caused to flow out from any of the sub-flow ports provided corresponding to each branch. . Others In the present invention, the cylinder type valve device can be configured in various other forms, and the present invention can be configured in variously modified forms without departing from the scope of the invention.

[Brief description of drawings]

FIG. 1 is a diagram showing an installed state of a water faucet including a water purifier including a switching valve device according to an embodiment of the present invention.

FIG. 2 is an enlarged view of an essential part showing a switching operation part and its peripheral part in FIG.

3 is a diagram showing an internal structure of the water faucet of FIG. 1. FIG.

FIG. 4 is an enlarged view showing an internal structure of a tip end portion of the water discharge pipe of FIG.

FIG. 5 is an enlarged view of the emergency shutoff valve of FIGS. 3 and 4 and its peripheral portion.

FIG. 6 is a view showing the water discharge pipe of FIG. 3 in a disassembled state into each member.

FIG. 7 is an enlarged view showing a switching valve device built in the tip of the water discharge pipe and its peripheral portion.

FIG. 8 is a view showing the switching valve device of FIG. 7 in a disassembled state into respective members together with their peripheral portions.

9 is a view showing the valve body and the valve casing in FIG. 8 independently.

FIG. 10 is a view showing a state where the valve body and the valve casing of FIG. 9 are assembled.

FIG. 11 is a diagram showing in detail the configuration of the valve body of FIGS.

FIG. 12 is an operation explanatory view of the switching valve device of FIGS. 7 to 11.

FIG. 13 is an operation explanatory view showing an operation state and a water discharge state of the switching operation unit.

FIG. 14 is a view showing a state where a conventional built-in type water purifier is installed in a cabinet.

FIG. 15 is a partially cutaway view showing a main part of a conventionally known water faucet with a water purifying function.

FIG. 16 is a view showing a main part of the water faucet with a water purifying function of FIG. 15.

17 is a diagram schematically showing the switching function of the switching valve device of the water faucet with a water purifying function shown in FIGS. 15 and 16. FIG.

FIG. 18 is a view showing a water discharge state of the water faucet with a water purifying function shown in FIGS. 15 to 17;

FIG. 19 is a comparative example view showing a cylinder type switching valve device devised by the present inventors and its peripheral portion.

20 is a diagram showing the switching valve device of FIG. 19 in a disassembled state into respective members.

21 is a diagram showing a main part of a water faucet including a water purifier including the switching valve device of FIGS. 19 and 20. FIG.

FIG. 22 is an operation explanatory view of the switching valve device of FIGS. 19 and 20.

23 is an operation explanatory view showing the operating state and the water discharge state of the switching operation unit in the switching valve device of FIGS. 19 and 20 in relation to the state of the switching valve device.

[Explanation of symbols]

42 Purification cartridge 74 Switching valve device (cylinder type valve device) 76 valve body 78 valve casing 84 Cylindrical part 102 main passage 104 Main inlet 106 Main outlet 108 First main outlet 110 Second main outlet 112,124 Secondary inlet 116,126 Secondary outlet 118 pipe 120 Vice passage

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 2D060 BB01 BC01 BC11 BE09 BE15                       CB03 CC16 CD09                 3H067 AA23 CC32 CC54 DD03 DD12                       DD24 EA03 EC01 FF12 FF17                       GG13                 4D024 AA02 AB11 AB14 BA02 BA05                       BB01 BC02 CA04 CA05 CA13                       DB03

Claims (6)

[Claims] 1. (a) A main inlet and a main outlet for forming a main passage on the inside surrounded by a peripheral wall portion of the cylindrical portion, the main inlet having a cylindrical portion, and a main outlet for letting a fluid into and out of the main passage. And (b) a valve casing externally fitted to the valve body, and the relative rotation of the valve body with respect to the valve casing opens and closes a flow passage through the main passage or controls the flow rate or the flow passage. In the cylinder type valve device configured to perform switching of the above, a peripheral wall portion of the valve element is provided with a sub-inflow port and a sub-outflow port, and a pipe portion extending over the sub-inflow port and the sub-flow port is provided in the valve body. A sub-passage, which is provided so as to cross the inside of the peripheral wall portion and guides the fluid from the sub-inlet to the sub-outlet, is formed inside the pipe portion and is independent of the main passage. The sub-inlet corresponding to the sub-inlet and sub-outlet in the section The secondary outlet port is provided, the cylinder-type valve device being characterized in that so as to form a switching of the switching to the flow control or flow path of the flow path through the sub passages with the relative rotation of the valve body. 2. The valve body and the valve casing according to claim 1, wherein one end portion or both end portions in the axial direction of the cylindrical portion of the valve body are formed in an open shape to form the open shape portion as the main inlet. 2. A cylinder type valve device, characterized in that a through-hole is formed in each of the peripheral wall portions of the valve body and a main outlet of the valve body. 3. The valve casing according to claim 2, wherein two or more main outlets are provided in the valve casing at different positions in a rotational direction with respect to one main outlet of the valve body.
A cylinder type valve device, characterized in that the relative flow of the valve element causes the main outlet of the valve element to coincide with any one of the main outlets of the valve casing to switch the flow paths. 4. The sub-flow inlet and the sub-flow of the peripheral wall portion of the valve body according to claim 3, at a rotational position where the main flow outlet of the valve body does not match any main flow outlet of the valve casing. A cylinder type valve device, wherein the outlets are respectively aligned with the secondary inlet and the secondary outlet of the peripheral wall portion of the valve casing. 5. The cylinder type valve device according to claim 1, wherein the cylinder type valve device is a switching valve device for switching between discharge of raw water consisting of tap water and discharge of purified water after passing through a purification cartridge. Characteristic cylinder type valve device. 6. The cylinder type valve device according to claim 4, wherein the cylinder type valve device is a switching valve device that switches between discharge of raw water consisting of tap water and discharge of purified water after passing through a purification cartridge. A passage forms a passage for passing the raw water, and the relative rotation of the valve element causes the one main outlet of the valve element to coincide with either of the two main outlets of the valve casing, thereby straightening the raw water. Water discharge, raw water shower water discharge switching, and the sub-passage forms a passage for passing the purified water, the sub-inlet and sub-outlet of the valve body to the sub-inlet and sub-outlet of the valve casing. Cylinder type valve device characterized by switching from raw water discharge to purified water discharge by matching.