JP3196063B2 - Mixing faucet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved mixing faucet.

[0002]

2. Description of the Related Art Conventionally, a mixing faucet is constructed as shown in a sectional view in FIG. 2, and a temperature control handle 52 for temperature control is provided on the left side of a mixing faucet 51.
Switching handle 53 for switching between spouting and showering on the right
The mixing faucet 51 is provided with a mixing section 54 which is adjusted by the temperature control handle 52 and mixes hot and cold water inside the mixing faucet 51.
3, a switching unit 55 for switching between water discharge and a shower is provided. Conventionally, the mixing section 54 is inserted and assembled from the left side of the main body,
The switching unit 55 is inserted and assembled from the right side of the main body, and a space S is formed between the two. As described above, in the related art, the mixing unit 54 and the switching unit 55 are inserted and assembled from different directions, so that the assembling property is poor, and since the space S is formed inside the mixing faucet 51, the mixing Faucet 5
1 has a problem that it becomes large.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above-mentioned conventional problems, and has as its object to provide a mixing faucet that can be easily assembled and made compact. Is formed into a cartridge by integrating a mixing section for mixing introduced water and hot water with a built-in thermostat and a switching section for switching between spouting and showering, and inserting the cartridge into the main body case and The mixed water mixed in the section flows inside the cartridge to the switching section side, and water discharged from the switching section flows through a flow path formed between the main body case and the outer periphery of the cartridge and is discharged to the outside. In the mixing faucet,
In the cartridge, from the mixing section to the switching section side
Return a part of the flowing mixed water to the upstream side of the thermostat
That is , a return channel is formed .

[0004]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of the mixing faucet. The mixing faucet 1 is provided with a temperature control handle 3 at the left end of a cylindrical main body case 2 so as to be rotatable. Is provided with a switching handle 4 so as to be rotatable.
In the main body case 2, a cartridge 5 is inserted from one side of the main body case 2 and housed. The mixing section 6 and the switching section 7 are integrated and incorporated in the cartridge 5, so that the space S unlike the conventional one does not exist. In addition, a rectifying water discharge pipe 8 is provided so as to protrude from the main body case 2.

In the mixing section 6 incorporated in the cartridge 5, a thermoelement 9 and a thermovalve 10 which moves integrally with the thermoelement 9 to open and close a flow path exist as main constituent members. When the thermo-valve 10 opens the water inlet 11 through which water flows in and the hot water inlet 12 through which hot water flows from the outside, water and hot water are mixed in an appropriate amount in the mixing chamber 13 to obtain mixed water at an appropriate temperature. This mixed water passes through a venturi section 15, passes through a mixing channel 14 formed on the outer peripheral side of the thermoelement 9,
A return channel 16 is formed outside the mixing channel 14 to return a part of the mixed water flowing through the mixing channel 14 to the switching portion 7. ,
A part of the mixed water flows in the return flow path 16 in the reverse direction and returns to the mixing chamber 13 through the gap 17 again. It is configured so that the temperature rise can be reduced.

The switching section 7 is composed of a fixed ceramic valve 19 having a fixed shape and a movable ceramic valve 20 which slides with respect to the fixed ceramic valve 19. The movable ceramic valve 20 pivots with respect to the fixed ceramic valve 19 via 18, thereby discharging water to the rectified water discharge channel 21 communicating with the rectified water discharge pipe 8 side or the shower water discharge channel 2.
Water is discharged to the shower head side (not shown) by discharging water to the second side. That is, the water discharged from the switching unit 7 is supplied to the rectified water discharge passage 21 or the shower water discharge passage 22 formed between the outer periphery of the cartridge 5 and the inner periphery of the main body case 2.
And is discharged to the outside. That is, in this example,
The mixed water flowing from the mixing unit 6 to the switching unit 7 flows in the mixing channel 14 formed inside the cartridge 5,
Is discharged from the outside of the cartridge 5. In the drawing, reference numeral 24 denotes a display ring, and reference numeral 25 denotes a pressing member.

As described above, in this embodiment, since the mixing section 6 and the switching section 7 are integrated into the cartridge 5, the cartridge 5 can be inserted into the main body case 2 from one side and assembled. The properties are extremely good. In addition, the space S as in the related art is not required, the inside of the cartridge can be made compact, and the entire mixing faucet can be made compact.

[0008]

The mixing faucet of the present invention has a built-in thermostat and a mixing section for mixing introduced water and hot water, and a switching section for switching between spouting and showering. While being inserted into the main body case, the mixed water mixed in the mixing section flows inside the cartridge to the switching section side, and water discharged from the switching section is a flow path formed between the main body case and the outer periphery of the cartridge. Mixing faucet configured to flow through and be discharged to the outside
In the cartridge, from the mixing unit,
A part of the mixed water flowing to the switching unit side is
By forming a return flow path for returning to the upstream side , the mixing unit and the switching unit can be compactly integrated in one cartridge, and the cartridge can be inserted into the main body case from one side and assembled. In addition, a flow path for mixed water is formed inside the cartridge, and a water discharge flow path is formed outside the cartridge. It is possible to make the whole compact and small . Also, in the cartridge, from the mixing section
A part of the mixed water flowing to the switching section is transferred upstream of the thermostat.
A part of the mixed water is formed by forming the return channel to return to the side.
Flowed upstream of the thermostat through the return flow path
Can effectively mitigate sudden rises in temperature and improve mixing performance.
Can be used.

[Brief description of the drawings]

FIG. 1 is a half sectional configuration view of a mixing faucet.

FIG. 2 is a cross-sectional configuration diagram of a conventional mixing faucet.

[Description of Signs] 1 mixing faucet 2 main body case 3 temperature control handle 4 switching handle 5 cartridge 6 mixing section 7 switching section 8 rectifying water discharge pipe 9 thermoelement 10 thermo valve 11 water inlet 12 hot water inlet 13 mixing chamber 14 mixed flow Path 16 Return flow path 19 Fixed ceramic valve 20 Movable ceramic valve 21 Rectification water discharge flow path 22 Shower water discharge flow path

Claims (1)

(57) [Claims] 1. A cartridge that integrates a mixing unit for mixing introduced water and hot water with a built-in thermostat, and a switching unit for switching between spouting and showering, are formed into a cartridge, and the cartridge is inserted into a main body case. The mixed water mixed in the mixing section flows inside the cartridge to the switching section side, and water discharged from the switching section flows through a flow path formed between the main body case and the outer periphery of the cartridge to be discharged to the outside. In the mixing faucet constructed as described above, the cartridge
Mixed water flowing from the mixing section to the switching section side
Return flow path for returning a part of the flow to the upstream side of the thermostat.
A mixing faucet characterized by being formed .