JPH10280502A - Faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a stable water-discharge performance by detachably installing a strainer on the upstream side of a constant flow valve in a faucet having the constant flow valve keeping a flow rate constant at the front end of a water discharge section. SOLUTION: The faucet 2 is mounted on the top plate of a wash stand or a sink, and a lever 4 adjusting the temperature and flow rate of cold and hot water is arranged at the upper end of the drum section 3 of the faucet 2. A strainer 9 being formed of a net raw material in a hat shape and capturing foreign matters such as sand, dust, etc., mixed into the fluid of cold and hot water and a holding cylinder 11 is set up at the front end of a water discharge section 5 projected from the drum section 3 in the horizontal direction. When the lever 4 for the faucet 2 is operated from the place of cutoff to the direction of water discharge, cold and hot water are passed from the outside of the strainer 9 to the inside and foreign matters are captured to the strainer 9, and cold and hot water passed through a constant flow valve 13 is foamed by a foaming metal fitting 20. Accordingly, cold and hot water at a stable flow rate can be supplied at all times.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water faucet in which a constant flow valve capable of adjusting a flow rate of hot water at a tip end of a water discharge portion is arranged.

[0002]

2. Description of the Related Art Conventionally, by incorporating a constant flow rate valve at the end of a water faucet portion of a faucet, a constant amount of hot water can be constantly spouted even when the water supply pressure fluctuates, so that the water discharge range can be kept within a predetermined range. FIG. 2 of Japanese Patent Application Laid-Open No.
(FIG. 4 of the present application). Briefly describing FIG. 4, a bush 32 is inserted into and connected to the tip of the faucet body 31, a water discharge cap 33 is coaxially connected to the bush 32, and a constant flow rate is provided inside the water discharge cap 33. The valve 34, the rectifier 35, and the rectifier network 36 are sequentially arranged and incorporated. Since the rectifier 35 that provides a flow path resistance so as to attenuate turbulent flow is disposed immediately downstream of the constant flow valve 34, Water splashing is small and stable water discharge is obtained.

In the above-mentioned valve, the constant flow valve capable of maintaining a constant flow rate even when the water pressure fluctuates has a very narrow hot water passage 37, and foreign matters mixed in the hot water passing through the passage 37 adhere to the constant flow valve. It was not easy to maintain stable water discharge performance.

[0004]

An object of the present invention is to prevent a foreign substance from adhering to a constant flow valve disposed at the tip of a water discharge section of a faucet, thereby obtaining a stable water discharge performance. That is.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a water faucet provided with a constant flow rate valve for maintaining a constant flow rate at the tip of a water discharge section.
A strainer is detachably mounted on the upstream side of the constant flow valve.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. As shown in FIG.
Is mounted on the top plate 1 of the washstand or sink, and a lever 4 for adjusting the temperature and flow rate of hot and cold water is arranged at the upper end of the body portion 3,
A strainer 9 and a holding cylinder 11 are sequentially mounted on the distal end of the water discharge section 5 projecting horizontally from the body section 3 from the upstream side to the downstream side.

The strainer 9 is formed in the shape of a hat made of a net material, is capable of catching sand, dust and other foreign matter mixed in the fluid of hot and cold water, and has an outer diameter formed in the water discharge section 5. The flange 1 is formed integrally with the inner diameter of the peripheral wall 6.
0 abuts from the outside of the inner peripheral wall 6.

The holding cylinder 11 is accommodated on the downstream side with respect to the strainer 9, and a foam metal fitting 20, a packing 19, a washer 18, and a constant flow valve 13 are sequentially mounted inside the holding cylinder 11 as shown in FIGS. 2 and 3. The holding cylinder 11 is fixed by a nut 28.
The flange 10 of the strainer 9 is pinched between the end surface of the holding cylinder 11 and the inner peripheral wall 6 by screwing the male screw 12 formed on the outer periphery of the female screw 7 into the female screw 7 formed on the inner periphery of the water discharger 5. It is combined in the state where it was done.

The constant flow valve 13 includes a washer 18 and a nut 28.
The core 15 and the O-ring 16 are accommodated in a cylindrical housing 14 which is supported by being sandwiched therebetween, and a hot water flow path 17 is formed between the core 15 and the O-ring 16. . Although the supply pressure of the hot water passing through the flow path 17 is low or the O-ring 16 does not deform in a normal case, the flow path 17 maintains a predetermined water flow area, but when the supply pressure increases, the pressure changes. O-ring 16 is formed in flow path 17
This is a conventionally known device capable of constantly discharging a fixed amount of hot and cold water to the outside even when the supply pressure changes, by reducing the water flow area by deforming in a direction to close the water.

The foam metal fitting 20 is formed in a cylindrical shape, is disposed downstream of the constant flow valve 13, and has a flange 21 formed on the end face.
Step 8 formed on the inner peripheral surface of the water discharge section 5 and the packing 19
A gap 22 is formed between the outer peripheral surface of the foam metal fitting 20 and the inner peripheral surface of the water discharging section 5 for introducing outside air into the foam metal fitting 20. In the inside of the foam metal fitting 20, a wire mesh 23 having a raised central portion to secure a water flow area and a disk 24 having a number of small holes 25 formed therein for accelerating the change of hot and cold water into a thin flow are accommodated. . The gap 2
A plurality of mesh plates 27 for stirring hot water and foaming the hot water are stacked and accommodated downstream of the air holes 26 communicating with the second and introducing the outside air. Therefore, hot and cold water flows through the constant flow valve 13.
When the air reaches the foam metal fitting 20 from outside, the outside air is sucked into the foam metal fitting 20 from the gap 22, and the hot water mixes with the outside air to form the mesh plate 27.
While passing through, the foam flow is discharged to the outside.

When the lever 4 is operated from the water stop position in the water faucet 2 in the water discharge direction, the hot water first passes from the outside to the inside of the strainer 9, and any foreign matter mixed in the hot water at this time is sent to the strainer 9. Be captured. Next, the hot water flows through the flow path 1 by deforming the O-ring 16 even if the supply pressure of hot water changes between the core 15 of the constant flow valve 13 and the O-ring 16.
7 is controlled to a constant flow rate by changing the water passage area, and the hot water that has passed through the constant flow rate valve 13 is foamed by the foam fitting 20, so that the foam water with less water splash can be discharged.

Next, to clean the strainer 9 because the strainer 9 is clogged with foreign matter, the holding cylinder 11 is loosened and removed from the water discharging section 5, and the strainer 9 can be taken out from the water discharging section 5 by grasping it with a finger and pulling it out. Then, after all foreign substances are removed, the foreign matter may be accommodated again in the water discharging section 5 and the holding cylinder 11 may be screwed to the water discharging section 5.

[0013]

Since the present invention has the above configuration, it has the following advantages. (1) In a faucet provided with a constant flow valve for maintaining a constant flow rate at the tip of the water discharge section, a strainer is detachably mounted on the upstream side of the constant flow valve. It is possible to always supply hot and cold water at a stable flow rate without being captured by the strainer and flowing into the narrow flow path of the constant flow rate valve. (2) Since the strainer is detachably attached to the tip of the water discharging section, even if the strainer is clogged, it can be easily cleaned.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a faucet.

FIG. 2 is a side view of each article and a strainer in a holding cylinder.

FIG. 3 is an enlarged vertical section of a main part.

FIG. 4 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 2 faucet 5 water spout 9 strainer 13 constant flow valve

Claims (1)

[Claims] 1. A faucet provided with a constant flow valve for maintaining a constant flow rate at the tip of a water discharge section, wherein a strainer is detachably mounted upstream of the constant flow valve.