JP2879307B2 - Automatic mixing faucet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method of mixing hot water introduced from a hot water supply facility through a hot water supply pipe and water introduced from a water faucet or the like through a water supply pipe at a desired ratio to obtain a desired temperature. The present invention relates to an improvement of an automatic mixing faucet in which a thermo-element is incorporated in a body of a mixing faucet to be taken out as mixed water so that mixed water having a desired set temperature can be taken out.

[0002]

2. Description of the Related Art An automatic mixing faucet of the above-described embodiment will be described in detail with reference to FIGS. 1 and 2 when an automatic mixing faucet A is installed in a bathroom so that mixed water can be taken out to a shower sprinkler. As described above, an inner cylinder 2 whose axial direction is aligned with the axial direction is inserted into and assembled into a body 1 formed into an axial cylindrical shape having an axial direction as a lateral direction, and the inner wall of the inner cylinder 2 is A hot water inlet 20, a water inlet 21, and a mixed water outlet 22 are opened in that order from the left end side in the axial direction, and between the outer surface of the inner wall of the inner tube 2 and the inner wall surface of the body 1. The hot water passage 10 leading to the hot water inlet 20, the water passage 11 leading to the water inlet 21, and the mixed water passage 12 leading to the mixed water outlet 22 are provided in a state where they are partitioned in a watertight manner.

Further, a valve chamber 2a communicating with the hot water inlet 20 and the water inlet 21 is provided in the inner cylinder 2, and a mixing chamber 2b for mixing the hot water and water flowing into the valve chamber 2b is connected to the mixed water outlet 22. Provided in communication with

In the valve chamber 2a, the flow rate of hot water flowing into the inner cylinder 2 from the hot water inlet 20 and the flow rate of water flowing into the inner cylinder 2 from the water inlet 21 are controlled. A cylindrical mixing valve 3 is incorporated, and a thermo-element 4 such as a wax thermo-element, which senses a temperature change and whose operating portion 40 expands and contracts or moves in and out, is mounted in a mixing chamber 2b. And the operating part 40 is incorporated as a posture located on the right side, and the temperature sensing part 4 located on the left side thereof is mounted.
a side is connected to the mixing valve 3, and an operating part 4 located on the right side
0 is supported on a fulcrum F installed in the body 1, and when the thermoelement 4 performs an operation of extending or projecting the operating portion 40 of the thermoelement 4 rightward, the thermosensitive portion 4a conversely moves leftward. The mixing valve 3 is pushed out and pushed out to the side for closing the hot water inlet 20, and the mixing valve 3 is further pushed back in a direction opposite to the pushing direction of the thermoelement 4.
Is linked.

An operating member 6 for moving the above-mentioned fulcrum F in the axial direction of the body 1 is incorporated into the inner cylinder 2 at the right end thereof, and is incorporated into the inner cylinder 2 at the right end of the body 1. A provided temperature adjusting dial D is connected, and by rotating the dial D, the position of the fulcrum F is displaced in the axial direction so that the set temperature is adjusted as desired.

[0006] The hot water passage 1 is provided on the outer surface of the body 1.
0 to the hot water supply pipe a and the water passage 1
1 for connecting the water supply pipe 1 to the water supply pipe b, and a connection port 13 for connecting the mixed water passage 12 to the shower hose H.
Further, at a portion upstream of the connection port 13, a water stop valve SV for stopping water mixed from the connection port 13 and a water dial SD for operating the water stop valve SV are provided.
Are provided.

[0007] Thus, by connecting the connection port provided on the back side of the outer surface of the body 1 to the hot water supply pipe a and the water supply pipe b provided on the wall surface of the bathroom, the hot water and water guided from them are connected. By operating the dial D, the mixture is mixed to a desired temperature, and the mixed water is supplied from the connection port 13 by operating the water stop dial SD to the hose H of the shower equipment.
It is configured to be installed to take out.

[0008]

In the automatic mixing faucet A constructed as described above, a dial D for setting the temperature of the mixed water to be taken out is located at the right end side of the body 1, and the mixed water to be taken out is stopped. The water stop dial SD for performing the operation is located on the left end side of the body 1.

By the way, when taking out the mixed water, the automatic mixing faucet A first operates the dial D for temperature adjustment.
An operation is performed to set the temperature of the hot water to be taken out as desired, and thereafter, the water stop dial SD is operated to take out the hot water and stop the water. That is, after turning the dial D for temperature adjustment to set a desired temperature,
It is used by holding only the water stop dial SD while holding it in a fixed state at the rotation position.

For this reason, the conventional automatic mixing faucet A has a problem that the usability is poor. Further, from this, the water mixing dial SD, which is frequently rotated, is located at the right end of the body 1, and the temperature adjusting dial D, which has less rotation, is located at the left side of the body 1. The faucet A is desired for improving usability when used. However, in most of the actual automatic mixing faucets A, the water stop dial SD and the temperature adjustment dial D have the above-mentioned inconvenient form.

This is because hot water supply pipe a and water supply pipe b are
When the equipment is installed side by side on the left and right, it is specified that the piping should be constructed so that the hot water is located on the left and the water is located on the right. For this reason, the pipe is connected to the valve chamber 2a in the body 1. The hot water inlet 20 to be provided is located on the left end side, and the water inlet 21 is positioned rightward with respect to the hot water inlet 20. Therefore, the thermoelement 4 for controlling the mixing valve 3 includes:
When the operating portion 40 performs the extension or push-out operation due to the rise in temperature, the mixing valve 3 is moved so as to reduce the flow rate at the hot water inlet 20 side and increase the flow rate at the water inlet 21 side. By pushing out the valve 3 from the right to the left, the thermoelement 4 has a configuration in which the fulcrum F is on the right side, and from this, the fulcrum of the thermoelement 4 is used for temperature adjustment. This is because the dial D for moving F is necessarily located on the right end side of the body 1.

As a countermeasure for this problem, a pipe line is provided in the body 1 so that hot water introduced from the hot water supply pipe a located on the left side and water introduced from the water supply pipe b located on the right side cross each other on the left and right. The fulcrum F of the thermoelement 4 is positioned on the left side if the parallel arrangement of the valve chamber 2a, the mixing valve 3, the thermoelement 4 and the like provided in the body 1 is replaced. Then, a temperature adjusting dial D for moving the fulcrum F is located on the left end side of the body 1, which can be solved. However, the structure of the body 1 becomes complicated, and the production is troublesome. Another problem is that the cost increases.

[0013] The present invention has been made to solve the above-mentioned problem occurring in the conventional automatic mixing faucet,
The temperature control for the body 1 is simplified while the body 1 has a simple structure without the need for a troublesome structure in which a passage for guiding hot water and a passage for guiding water are crossed in the casting constituting the body 1 so as to be switched left and right. It is an object of the present invention to provide a new automatic mixing faucet in which the dial D can be mounted on the left end side of the body 1.

[0014]

According to the present invention, as a means for achieving the above-described object, a cylindrical case 7 formed in a cartridge shape is formed in a body 1 formed in a shaft cylindrical shape elongated in the left-right direction. Is movably fitted in the axial direction, a valve chamber 2a is formed in the left half of the cylindrical case 7, and the mixing chamber 2 is formed in the right half.
b, and a valve seat 30 for a hot water valve and a cylindrical valve are formed in the valve chamber 2a, and a hot water valve 3a is formed at one end and a water valve 3b is formed at the other end. A mixing valve mechanism MV comprising a mixing valve 3 and a valve seat 31 for a water valve, etc., is incorporated. The thermosensitive element 2a of the thermoelement 4 is connected to the mixing valve 3 so as to move freely in the axial direction with respect to the inner cylinder 2. Is fixed to a fulcrum F provided fixedly on the right end side of the body 1, and an operating member 6 is attached to the body 1 on the left end side so as to be freely adjustable in the axial direction, and is connected to the cylindrical case 7. By operating the operating member 6, the cylindrical case 7 is moved, and the mixing valve mechanism MV incorporated in the cylindrical case 7 is By changing the set temperature by axially displacing the fixed fulcrum F, the temperature can be adjusted at the left end of the body 1 and the water can be stopped at the right end of the body 1. The present invention proposes an automatic mixing faucet characterized by the above.

[0015]

When the temperature of the mixed water to be taken out rises, the operation of the thermoelement 4 in which the tip of the operating portion 40 abuts on a fulcrum F fixed to the body 1 when the temperature of the mixed water to be taken out increases. As a result, the mixing valve 3 of the mixing valve mechanism MV
In FIG. 3, moving to the left reduces the inflow of hot water and increases the inflow of water to lower the temperature of the mixed water.
When the pushing pressure of 0 is reduced, the thermoelement 4 moves rightward in FIG. 3 by the spring pressure of the spring 5 to move the mixing valve 3 rightward, thereby increasing the inflow of hot water and reducing the inflow of water. Reduce and raise the temperature of the mixed water. Therefore, the mixed water to be taken out is kept at a desired and fixed temperature.

Next, when the cylindrical case 7 movably fitted in the body 1 in the axial direction thereof is moved to the left in FIG. 2, the operating portion 40 of the thermoelement 4 is pushed in the pushing direction. If the actuation amount of does not increase, it will not come into pressure contact with the fixed fulcrum F, and the set temperature will be moved to the higher temperature side. Conversely, when the cylindrical case 7 is moved to the right, the amount of operation of the operating portion 40 of the thermoelement 4 with respect to the fixed fulcrum F is small, so that the piston is pressed against the fixed fulcrum F and the mixing valve 3 is moved to the left. And the set temperature changes to the lower temperature side.

Therefore, the set temperature of the mixed water to be taken out can be adjusted as desired by moving the cylindrical case 7 fitted in the body 1 in a cartridge shape in the axial direction of the body 1.

Since the operation for adjusting the set temperature can be performed by moving the cylindrical case 7 in the axial direction of the body 1, the operating member 6 that moves in the axial direction of the body 1 is attached to the body 1. The cylindrical case 7 is connected to the body 1 and the operating member 6 is operated by rotating a temperature adjusting dial D mounted on the left end side of the body 1, whereby the body 1 is moved.
The temperature setting can be adjusted on the left end of the body 1. Therefore, with the dial D for temperature adjustment removed from the right end of the body 1, a dial SD for stopping water is set on the right end of the body 1. Be able to attach.

[0019]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 3 shows an automatic mixing faucet A embodying the present invention.
Is a longitudinal sectional front view of a main part of FIG.
Is a cylindrical case fitted in the body 1 so as to move in the axial direction thereof, 3 is a mixing valve incorporated in the cylindrical case 7, 4 is a thermoelement incorporated in the cylindrical case 7, and F is a cylinder. A fulcrum fixedly mounted in the body 1 so as to abut against the operating portion 40 of the thermoelement 4 stored in the cylindrical case 7, an operating member 6 for displacing the cylindrical case 7 in the axial direction of the body 1, and a w for its operation A partition wall for separating the member 6 and the cylindrical case 7 from each other in a watertight manner. Reference numeral 61 denotes a rod connecting the operating member 6 and the cylindrical case 7.

The body 1 is formed by casting into an axial cylindrical shape whose axial direction is the left-right direction. On the rear side of the outer surface, as shown in FIG.
And a water passage 11 having a connection port 15 connected to the water supply pipe b, and a connection port for connecting a hose H of a shower device is provided on the front side of the outer surface. A mixed water passage 12 comprising 13 is formed. A temperature adjusting dial D is attached to the left end of the axial end, and a water stop dial S for stopping water is mounted to the right end.
D is attached.

The cylindrical case 7 has an axial direction of the body 1.
And a bottomed sleeve 7a slidably fitted in the body 1 in an axially aligned state, and an inner cylinder fitted with the mixing valve mechanism MV and the thermoelement 4 and fitted in the sleeve 7a. As shown in FIG. 3, the inner cylinder 2 is fitted into the sleeve 7a and abuts against the bottom plate 70 of the sleeve 7a. In this state, the right end side of the inner cylinder 2 and the sleeve 7a are stopped by the stop ring 71. By being combined, they are assembled into an integral cartridge.

The mixing valve mechanism MV and the thermoelement 4 incorporated in the inner cylinder 2 are the same as those of the conventional means shown in FIGS. 1 and 2, and in the mixing valve mechanism MV, A valve chamber 2a is formed on the left end side of the inner cavity of the inner cylinder 2, and a mixing valve 3 formed as a cylindrical valve is stored therein, and a valve seat 30 for a hot water valve and a valve seat 31 for a water valve are formed. A portion communicating with the left end side of the valve chamber 2a and the valve chamber 2a
The hot water inlet 20 and the water inlet 21 are respectively opened at a portion communicating with the right end side of the water heater.

In the thermoelement 4, a temperature sensing part 4a is located on the left side in a mixing chamber 2b formed on the right half side of the inner cylinder 2 in communication with the valve chamber 2a. Is stored on the inner cylinder 2 so that the temperature-sensitive portion 4a, which is a body, slides freely in the axial direction (left-right direction) with respect to the inner cylinder 2, and the temperature-sensitive portion 4a is moved to the above-described mixing valve. 3, the operating portion 40 is projected rightward from the right end side of the inner cylinder 2 to abut against a fulcrum F provided in the body 1, whereby the temperature of the mixed water in the mixing chamber 2b is reduced. When the operating section 40 is pushed up and the temperature sensing section 4a, which is the body, is pushed back to the left, the mixing valve 3 is moved to the left, and the temperature of the mixed water in the mixing chamber 2b decreases. When it comes, the operating part 40
Is reduced so that the mixing valve 3 is moved rightward by the spring pressure of the return spring 5 connected to the mixing valve 3.

In the sleeve 7a of the cylindrical case 7, a hot water passage 10 provided in the body 1 is formed on the peripheral wall of the sleeve 7a.
Opening 72 communicating with hot water inlet 20 provided in
And an opening 73 for communicating the water passage 11 provided in the inner cylinder 2 with the water inlet 21 provided in the inner cylinder 2, respectively.
At the right end, an opening 7 for connecting the mixed water outlet 22 formed in the cylindrical wall of the inner cylinder 2 to the mixed water passage 12 is provided.
The flow rate of hot water and water flowing into the valve chamber 2a from the hot water inlet 20 and the water inlet 21 through the openings 72 and 73 is determined by the mixing valve mechanism MV and the thermoelement 4 described above.
The mixed water having a predetermined temperature is sent from the mixed water outlet 22 to the mixed water passage 21 through the above-described opening 74.

The fulcrum F for supporting the protruding end of the operating portion 40 of the thermoelement 4 mounted on the cylindrical case 7 is mounted in the body 1 in a state fixed to the body 1. Have been. Therefore, the change and adjustment of the set temperature performed by moving the position of the fulcrum F are unnecessary.

The change of the set temperature is adjusted by moving the cylindrical case 7 movably fitted in the body 1 in the axial direction so that the fulcrum F is relatively moved. It is.

The operating member 6 is connected to the cylindrical case 7 by a fulcrum F.
The body 1 is formed in the shape of a shaft cylinder fitted into the body 1, and slides in the axial direction with the outer peripheral side engaged with the body 1 in the rotation direction. A female screw 62 is formed on the inner peripheral side of the bore, and the female screw 62 is rotatably mounted on the left end side of the body 1. Is screwed into a male screw 81 provided at the inner end of the rotary shaft 80,
By rotating the temperature adjustment dial D, the inside of the body 1 is displaced in the axial direction.

The operating member 6 is connected to a connecting plate 60 provided on the right end thereof and a bottom plate 70 of the sleeve 7a of the cylindrical case 7 by a rod 61, thereby rotating the temperature adjusting dial D. By operating the inside of the body 1 in the axial direction, the cylindrical case 7 assembled in a cartridge shape is moved via the rod 61 so as to advance and retreat with respect to the fulcrum F to adjust the set temperature.

The connecting plate 60 is fitted to the operating member 6 so as to be slidable in the axial direction, and is pushed forward by relief springs 63 and 64 arranged in the inner cavity of the operating member 6, so that the front end side of the operating member 6 is formed. By hitting the stop ring 65 provided on the
It is held so as to be located at the front end of the operating member 6. This is because when the temperature of the mixed water is high and the operating part 40 of the thermoelement 4 is pushed out with a large pressure, the cylindrical case 7 is moved rightward by operating the temperature adjustment dial D. Thereby, the large pressure received by the thermoelement 4 and the mixing valve mechanism MV is released by the movement of the connecting plate 60 by the relief springs 63 and 64, thereby preventing damage to the thermoelement 4 and the mixing valve mechanism MV. Even if the operation by the temperature adjustment dial D is impossible, the inside of the automatic mixing faucet A is prevented from being damaged.

The partition wall w is a partition wall in the body 1 for separating watertight between a portion where the cylindrical case 7 is incorporated and a portion where the operating member 6 is incorporated. As shown in FIG. Between the part where the cylindrical case 7 is incorporated and the part where the operating member 6 is incorporated, the inner cavity of the body 1 is provided so as to be watertight. The rod 61 connecting the operating member 6 and the cylindrical case 7 penetrates through the partition wall w and slides freely while maintaining watertightness.

Further, as shown in FIGS. 3 and 4, a fulcrum F for supporting the operating portion 40 of the thermoelement 4 is provided as follows.
It is formed in the shape of a partition wall crossing the lumen of the body 1, and fixedly connected to the inner peripheral surface of the body 1 at the peripheral edge to be fixedly mounted on the body 1.
A channel y through which mixed water flows is formed around a portion supporting the mixed water 0, and the cylindrical case 7
The mixed water flowing out through the opening 74 formed on the right end side of the is guided to the mixed water passage 12 via a flow path y formed around the fulcrum F.

In the middle of the mixed water passage 12,
As shown in FIG. 4, a water stop formed by a valve port 91 surrounded by an annular valve seat 90 and a valve element 92 facing the valve seat 90 at a portion facing the end face on the right end side of the body 1. A rotary shaft 9 of a water stop dial SD in which a valve SV is provided, and a valve body 92 of the valve SV is rotatably mounted on the right end of the body 1.
The screw 3 is screwed into a male screw 94 provided on the outer periphery and a female screw 95 connected to the valve element 92, so that the opening / closing operation is performed by rotating the water stop dial SD.

[0034]

As described above, in the automatic mixing faucet A according to the present invention, the thermoelement 4 is connected to the operating part 4 thereof.
The fulcrum F, which is incorporated into the cylindrical case 7 as a posture where 0 is located on the right side, is stored in the body 1 and abuts with the operating portion 40 of the thermoelement 4 stored in the body 1 is:
The right side of the body 1 is fixed to and mounted on the body 1, and the cylindrical case 7 incorporating the body of the thermoelement 4 and the mixing valve mechanism MV is moved to the body in the operating direction of the operating section 40. By moving the mixing valve mechanism MV incorporated in the cylindrical case 7 relatively to the fulcrum F by moving the mixing valve mechanism 1 in the axial direction, the change of the set temperature can be adjusted. In contrast to the restriction of plumbing work in which a is on the left side and water supply pipe b is on the right side, a troublesome configuration in which a passage for leading hot water and a passage for leading water are provided in a crosswise manner so as to be switched to the left and right in the casting constituting the body 1. , The temperature adjustment dial D can be mounted on the left end side of the body 1 while the body 1 has a simple configuration.
Since the water stop dial is provided on the right end side of the body 1, a convenient automatic mixing faucet can be constructed.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a conventional automatic mixing faucet.

FIG. 2 is a vertical sectional side view of the automatic mixing faucet of the same.

FIG. 3 is a vertical sectional front view of a main part of the automatic mixing faucet according to the present invention.

FIG. 4 is a cross-sectional plan view of the automatic mixing faucet;

FIG. 5 is a vertical sectional front view of the automatic mixing faucet in a state where the faucet is extracted from a cylindrical case portion and a body of an operating member.

[Explanation of symbols]

A: Automatic mixing faucet, a: Hot water supply pipe, b: Water supply pipe, D ...
Temperature adjustment dial, F: fulcrum, H: shower hose,
MV: mixing valve mechanism, SD: water stop dial, SV: water valve, w: partition, y: flow path, 1 ... body, 10: hot water passage,
11: water passage, 12: mixed water passage, 13, 14, 15 ...
Connection port, 2 ... inner cylinder, 2a ... valve chamber, 2b ... mixing chamber, 20 ...
Hot water inlet, 21 ... Water inlet, 22 ... Mixed water outlet, 3 ... Mixing valve, 30/31 ... Valve seat, 4 ... Thermoelement, 4a ...
Temperature sensing part, 40 ... working part, 5 ... return spring, 6 ... working member,
Reference numeral 60: connecting plate, 61: rod, 62: female screw, 63.6
4 relief spring, 65 stop ring, 7 cylindrical case, 7a sleeve, 70 bottom plate, 71 stop ring, 72, 73, 74 opening, 80 rotary shaft, 81 male screw, 90 valve seat Reference numeral 91 denotes a valve port, 92 denotes a valve body, 93 denotes a rotating shaft, 94 denotes a male screw, and 95 denotes a female screw.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-55486 (JP, A) JP-A-3-169930 (JP, A) JP-A-63-178679 (JP, U) JP-A-6-178679 (JP, U) 63886 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16K 31/68 E03C 1/044 F16K 11/07 F16K 27/00

Claims (4)

(57) [Claims] 1. A cylindrical case 7 formed in a cartridge shape is movably fitted in an axial direction in a body 1 formed in a shaft cylindrical shape that is long in the left-right direction, and a left half side in the cylindrical case 7 is provided. Valve
A chamber 2a is formed, and a mixing chamber 2b is formed on the right half side.
A valve seat 30 for a hot water valve and a cylindrical valve are formed in the valve storage chamber 2a.
A hot water valve 3a is formed at one end and a water valve 3b is formed at the other end.
Valve mechanism M comprising a mixing valve 3 and a valve seat 31 for a water valve
V, and a thermo element is provided in the mixing chamber 2b.
4, the temperature sensing part 4a is located on the left and the operating part 40 is located on the right.
The position of the temperature sensing portion 2 a is
It is stored so that it can move freely in the direction, and its thermoelement
The temperature sensing part 2a of the valve 4 is connected to the mixing valve 3, and the operating part 40
To the fulcrum F provided fixedly on the right end side of the body 1
The body 1 has a left end that is capable of axial displacement adjustment.
Assembling the moving member 6, connecting it to the cylindrical case 7,
The operation of the operating member 6 moves the cylindrical case 7,
The mixing valve mechanism MV incorporated in the cylindrical case 7
By displacing in the axial direction with respect to the fixed fulcrum F
The body 1 is adjusted so that the set temperature is changed and adjusted.
Temperature adjustment can be performed on the left end of the
An automatic mixing faucet , characterized in that water can be shut off at the same time . 2. A part in the body 1 in which the cylindrical case 7 is stored and a part in which the operating member 6 for displacing the cylindrical case 7 in the axial direction are stored are watertightly separated by a partition wall w. A rod 61 that slides in the axial direction while maintaining watertightness is penetrated through the partition wall w, and the cylindrical case 7 and the operating member 6 are connected through the rod 61 .
That claim 1 automatic mixing faucet according. 3. Mixed water communicating with a mixed water outlet 22 around a fulcrum F fixedly installed in the body 1 so as to abut against an operating portion 40 of the thermoelement 4 stored in the cylindrical case 7. claim, characterized in that the Katachi設the channel y 1
Automatic mixing faucet as described. 4. A temperature adjusting dial D connected to the left end of the body 1 and an operating member 6 for adjusting a displacement of a cylindrical case 7 axially movably fitted in the body 1 in the axial direction.
Are mounted so that they can be freely rotated .
That claim 1 automatic mixing faucet according.