JP2000337535A - Hot and cold water automatic mixing valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make automatically correctable the parallelism of a cold water valve or a hot water valve with a valve seat by loosely inserting the center boss part of a mixing valve constituting a valve mechanism into the guide part of a thermoelement, and pushing the mixing valve against an abutting member by a spring to link the mixing valve with the thermoelement. SOLUTION: In the valve mechanism (a) built in the valve sheet 10 of the automatic mixing valve, when linking the mixing valve 2 with a thermoelement 3, the center boss part 22 of the mixing valve 2 is loosely insertedly fitted to the outer circumference of the guide part 30 of the thermoelement 3, and the center boss part 22 is energized by a spring (b) previously mounted on the guide part 30 so as to be pushed up toward the extreme end side of the guide part 30 projecting a rod 31. Next, an abutting member (c) is mounted on the extreme end side of the guide part 30 to regulate movement to the extreme end side of the guide part 30 by an E-type snap ring 42, and by pushing up by the spring (b), the upper face side of the center boss part 22 of the mixing valve 2 is driven against the lower face side of the abutting member (c) to be pressure-connected to each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water mixing valve which mixes supplied hot water and water at a desired ratio and takes out the mixed water at a desired temperature. The present invention relates to an improvement in a hot and cold water mixing valve that automatically adjusts the temperature by operating a temperature sensor that senses the temperature of mixed water.

[0002]

2. Description of the Related Art A conventional automatic hot and cold water mixing valve A usually has a configuration shown in FIG.
As shown in FIG. 1, a valve chamber 10 is formed in the body 1 serving as a valve box, and a connection port 11 for hot water to be connected to a hot water supply pipe is formed on an outer side surface of the body 1. A water connection port 12 for connecting to a water supply pipe is provided, and the hot water connection port 11 is connected to the lower end side of the valve chamber 10 through a hot water inlet 13, and the water connection port 12 is connected to the valve chamber 10. A water inlet 14 communicates with the upper end of the valve body 10 and a valve chamber 10
A connection port 16 for taking out mixed water, which is connected to and connected to a mixed water outlet 15 formed on the bottom surface side, is formed as a form having a mixing chamber 17 in its inner cavity. A mounting port 18 for inserting a valve mechanism a to be incorporated into the device is formed.

This valve mechanism a is a cylindrical valve-shaped mixing valve 2 having a water valve 20 formed on an upper edge side and a hot water valve 21 formed on a lower edge side.
And a thermoelement 3 which is fitted into the center boss portion 22 of the mixing valve 2 with the guide portion 30 and integrally assembled to the mixing valve 2. And a guide part 30 of the thermoelement 3 fitted in the support part 40 for fitting the guide part 30 into the guide part 30.
And the E-shaped retaining ring 42 fitted to the guide portion 30 and the mixing valve 2.
The central boss portion 22 is sandwiched between the enlarged diameter stepped portion 33 formed on the base end side of the guide portion 30 and the E-shaped retaining ring 42 so as to be integrally connected.

[0004] The valve mechanism a thus assembled is dropped into the valve chamber 10 from the mounting port 18 on the upper surface side of the body 1, and the temperature sensing part 32 of the thermoelement 3 is connected to the connection port for taking out mixed water. A rod 31 which is located in the mixing chamber 17 formed in the lumen of the chamber 16 and protrudes from the guide portion 30
The thermoelement 3 is inserted so as to protrude upward from the upper portion 8, and the thermoelement 3 is urged to be pushed up by the bias spring 5 provided in the connection port 16.

[0005] The guide port 3 of the thermo-element 3 of the valve mechanism a is provided in the mounting port 18 on the upper surface side of the body 1.
An adjusting screw lid 60 that holds water-tightly and fits slidably is screwed and assembled, and an adjusting screw cylinder 62 that is displaced up and down by a rotation operation of an operation handle 61 is provided therein. A fulcrum fitting 64 provided vertically movable in the cavity and urged downward by a relief spring 63 is incorporated into the fulcrum fitting 64.
As a result, the projecting end of the rod 31 of the thermoelement 3 is supported.

The mixing valve 2 is provided on the lower surface of the adjusting screw lid 60.
A water-side valve seat 20a facing the water valve 20 is formed, and the valve chamber 1
0, a hot water side valve seat 21a facing the hot water valve 21 is formed around the mixed water outlet 15 so that the mixing chamber 17
When the rod 31 of the thermoelement 3 moves in and out due to a change in the temperature of the mixed water therein, the mixing valve 3 automatically moves to fluctuate the opening degrees of the hot water valve 21 and the water valve 20 to reduce the temperature of the mixed water to be taken out. It is configured to maintain the set temperature.

FIG. 2 is a sectional view of another embodiment of the automatic mixing valve A.

The automatic mixing valve A is an example in which the connection state between the mixing valve 2 and the thermoelement 3 of the valve mechanism a is changed, and the other basic configuration is the same as that shown in FIG. It is the same as the automatic hot water mixing valve. Then, the valve mechanism a of the valve mechanism a slidably inserts the guide portion 30 of the thermoelement 3 into a cylindrical regulating member 43 provided in the body 1 so as to move up and down correctly along the axial direction. The E-shaped snap ring 42 is fitted to the body of the guide portion 30 that protrudes upward from the regulating member 43, and the center boss portion 22 of the mixing valve 2 is fitted to the body portion of the guide portion 30.
, The upward movement of the center boss portion 22 with respect to the guide portion 30 is regulated, and the mixing valve 2 is released by the bias spring 5 serving as a release spring until the center boss portion 22 abuts on the E-shaped retaining ring 42. Energized,
This is an example in which the mixing valve 2 and the thermoelement 3 are integrally assembled.

[0009]

In the above-mentioned conventional automatic hot / water mixing valve A of the first example, the mixing valve 2 and the guide portion 30 of the thermoelement 3 are provided with a support fitting 40 and a washer. Since the three parts 41 and the E-shaped retaining ring 42 are integrally connected to each other, the degree of parallelism between the hot water valve 21 and the hot water side valve seat 21a of the mixing valve 2 due to bending at the time of assembling these parts. And the parallelism between the water valve 20 and the water-side valve seat 20a is hard to be obtained, and a large number of products with poor assembly are produced;
Since it is difficult to assemble the parts in a state where the parallelism is correctly set, the hot water valve 2 when the set temperature is set low
1 and the sealability of the water valve 20 when the set temperature is set high is poor. When water is required, there is a danger that hot water much higher than the set temperature will come out, and only hot water is required. In such a case, there is a problem that it takes time until hot water comes out.

Another embodiment shown in FIG. 2 is an example in which a bias spring 5 is provided between the mixing valve 2 and the body 1 to serve also as a relief spring. Since there is no force to push up the thermoelement 3, when the water valve 20 of the mixing valve 2 hits the water side valve seat 20a, the thermoelement 3 cannot be pushed up any more,
Therefore, since the thermoelement 3 and the mixing valve 2 are always maintained in a state of being integrally connected, the parallelism of the mixing valve 2 with respect to the valve seats 20a and 21a is changed to a state where the thermoelement 3 is assembled to the guide portion 30 of the thermoelement 3. As a result, the sealing performance is poor as in the above-described conventional example, and since the bias spring 5 is located outside the thermoelement 3, it is difficult to reduce the size. There is a problem that the mixing accuracy is poor by passing between 5 and 5.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem which has occurred in the conventional means, and is intended to connect the mixing valve to the thermoelement by connecting the mixing valve to the thermoelement with a degree of freedom. When the hot water valve or the water valve of the mixing valve abuts against the hot water valve seat or the water water valve seat, the mixing valve automatically moves, thereby causing the hot water valve and the water valve to move. It is an object of the present invention to provide a new means for improving the sealing performance by correcting the state so as to be correctly parallel to the side valve seat.

[0012]

According to the present invention, as a means for achieving the above object, a valve chamber is provided in an inner cavity, and a hot water supply connection port and a water supply pipe connected to a hot water supply pipe on an outer surface side. A cylindrical valve-shaped mixing valve having a water valve formed at one end and a hot water valve formed at the other end is provided in a body provided with a connection port for supplying water and a connection port for extracting mixed water. In a hot and cold water mixing valve in which a valve mechanism a in which a rod that can be inserted into and out of a guide part is inserted and exited by a temperature sensing operation of a warm part and that is connected to a thermomechanical element is inserted, the center boss portion of the mixing valve of the valve mechanism is thermostatted. An abutment member c for loosely fitting the guide portion of the element and fixing the mixing valve to the thermoelement by a spring b provided between the mixing valve and the thermoelement.
To provide an automatic mixing valve for hot and cold water, characterized in that the mixing valve is connected in a state where the degree of freedom is maintained with respect to the thermoelement, and further, a valve chamber is provided in the inner cavity, and the outer surface side is provided. A water valve is formed at one end and a water valve is formed at the other end in a body provided with a connection port for hot water supply connected to the hot water supply pipe, a connection port for water supply connected to the water supply pipe, and a connection port for mixed water extraction. A hot / cold automatic mixing valve for charging a valve mechanism a in which a cylindrical valve-shaped mixing valve having a hot water valve formed therein and a thermoelement in which a rod which can be inserted into and out of the guide portion by a temperature-sensitive operation of the temperature-sensing portion is combined and connected. , The center boss of the mixing valve of the valve mechanism a is loosely inserted into the guide of the thermoelement,
By the spring b provided between the distal end side of the guide portion and the upper surface side of the mixing valve, the mixing valve is urged toward the base end side of the guide portion,
The lower surface side of the mixing valve is pressed against an abutting member fixed to the thermoelement, and the mixing valve is connected to the thermoelement while maintaining a degree of freedom with respect to the thermoelement. Is what you do.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention provides a hot water supply connection port which communicates with a valve chamber through a hot water inlet, on an outer surface side of a valve box having a valve chamber for storing a valve mechanism therein. A connection port for water supply communicating with the valve chamber via a water inlet, a connection port for removing mixed water communicating with a mixed water outlet of the valve chamber, and a valve mechanism for assembling a valve mechanism in the valve chamber. A temperature control mechanism for adjusting a set temperature, and an inlet for mounting a temperature control mechanism, and a valve mechanism to be inserted into the valve chamber thereof is formed with a water valve on an upper edge side and a hot water on a lower edge side. Combining a cylindrical mixing valve with a valve and a thermoelement whose rod moves in and out in response to temperature changes, a valve mechanism that automatically moves the mixing valve to change the opening of the hot water valve and water valve The temperature control mechanism is operated by operating the handle or tool. Alternatively, the structure in which the position of the fulcrum fitting for supporting the protruding end of the rod of the thermoelement of the valve mechanism by turning the screw rod is changed and displaced in the direction in which the rod enters and exits is the same as that of the conventional means. May be configured.

The connection between the mixing valve and the thermoelement constituting the valve mechanism is such that the center boss portion of the mixing valve is slidable in the axial direction with respect to the guide portion of the thermoelement, and is provided at a predetermined position. The mixing valve is inserted swingably in the angle range, and the mixing valve is pressed against the abutting member fixed to the guide portion of the thermoelement by a spring interposed between the mixing valve and the thermoelement to be in a fixed state. It is done by holding it.

In this case, the spring interposed between the mixing valve and the thermoelement is provided in a direction in which the mixing valve is pushed up, and the mixing valve is pressed against an abutting member fixed to the thermoelement to press the thermoelement. The mixing valve may be held down in the direction of pushing down the mixing valve, and the mixing valve is brought into contact with the expanding step provided at the base end side of the guide portion of the thermoelement. The mixing valve may be pressed against a member or pressed against an abutment member which is separately fixed to the thermoelement to hold the mixing valve in its position relative to the thermoelement.

[0016] Thus, the thermoelement moves by the temperature-sensitive operation with respect to the hot water valve seat and the water water valve seat provided on the body of the valve box, whereby the mixing valve held by the thermoelement is moved. Move together, and when its hot or cold valve abuts against the opposing hot or water side valve seat, the pressure contact of the mixing valve against the abutment member is released,
The degree of freedom of the mixing valve is ensured, and the degree of freedom moves the mixing valve so that the hot water valve or the water valve and the opposite valve seat are parallel to each other. Is maintained well.

At this time, by forming the abutment surface between the mixing valve and the abutment member in a spherical shape, the operation of obtaining the parallelism of the mixing valve with respect to the hot water valve and the water valve seat is more accurate. Will be performed.

[0018]

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

FIG. 3 is a longitudinal sectional side view of a first embodiment of the automatic mixing valve according to the present invention. In FIG. 3, reference numeral 1 denotes a valve box body, which is formed in a cylindrical shape whose vertical direction is the axial direction. Yes,
A valve chamber 10 is formed in the lumen.

Reference numeral 11 denotes a connection port for hot water which is connected to a hot water supply pipe provided on one side surface of the body 1, and communicates with a lower end side of the valve chamber 10 through a hot water inlet 13.

Reference numeral 12 denotes a water connection port connected to a water supply pipe provided on the other side of the body 1 and communicates with the upper end of the valve chamber 10 through a water inlet 14.

Reference numeral 16 denotes a connection port for taking out mixed water.
0 is formed on the bottom side of the body 1 so as to communicate with a mixed water outlet 15 provided at the bottom portion of the body 1, and a lumen thereof is formed in a mixing chamber 17.

Reference numeral a denotes a valve mechanism incorporated in the valve chamber 10. The valve mechanism is fitted in a cylindrical mixing valve 2 having a water valve 20 on an upper edge side and a hot water valve 21 on a lower edge side, and a shaft-cylindrical guide portion 30. Inserted rod 3
Reference numeral 1 denotes a normal type in which a thermo-element 3 which is moved in and out by a temperature-sensitive operation of a temperature-sensitive part 32 in which wax is enclosed is connected and combined, and a mixing valve 2 thereof is located in a valve chamber 10; The temperature sensing part 32 of the thermoelement 3 is incorporated in the body 1 as being located in the mixing chamber 17, and the bias spring 5 provided in the mixing chamber 17 acts on the thermoelement 3 in a direction to push up.

The connection between the mixing valve 2 and the thermoelement 3 in the valve mechanism a is achieved by connecting the center boss 22 of the mixing valve 2 to
The rod 31 is inserted loosely into the outer periphery of the guide portion 30 of the thermoelement 3 and the center boss portion 22 is pushed up toward the distal end side of the guide portion 30 from which the rod 31 projects by a spring b which is fitted in the guide portion 30 in advance. So that it is energized.

Then, an abutment member c is fitted on the distal end side of the guide portion 30 projecting upward from the center boss portion 22, and the movement of the guide portion 30 toward the distal end side is regulated by the E-shaped retaining ring 42. The upper surface side of the center boss portion 22 of the mixing valve 2 is pressed against the lower surface side of the abutting member c by pressing up by the spring b to press the mixing valve 2 against the guide portion 30. It is held in position.

D is the lower surface of the abutment member c and the mixing valve 2
These are spherical abutment surfaces respectively formed at abutment portions of the center boss portion 22 with the upper surface side.

Reference numeral 18 denotes a mounting opening formed on the upper surface side of the body 1; 60, an adjusting screw cover screwed into the mounting opening 18;
An adjusting screw cylinder 64 screwed to the adjusting screw lid 60 so as to be moved up and down with respect to the body 1 by rotating the handle 61;
Is a rod 3 protruding from the tip of the guide portion 30 of the thermoelement 3 slidably fitted to the adjusting screw lid 60.
A fulcrum fitting 63 which is fitted in the adjusting screw cylinder 62 so as to be able to ascend and descend so as to support the one protruding end, and 63 is a relief spring for urging the fulcrum fitting 64 downward.

FIG. 5 is a vertical sectional side view of a second embodiment of the automatic hot and cold water mixing valve A according to the present invention.

In the figure, 1 is a body forming a valve box, 10 is a valve chamber formed therein, 11 is a connection port for hot water, 12 is a connection port for water, 13 is a hot water inlet, and 14 is a hot water inlet. Water inlet, 15 is a mixed water outlet, 16 is a connection port for taking out mixed water,
17 is a mixing chamber formed in the inner cavity of the connection port 16, 18 is a mounting port formed on the upper surface side of the body 1, and a is the mounting port 1
8 is a valve mechanism composed of a mixing valve 2 and a thermoelement incorporated in the body 1, 20 is a water valve provided on the mixing valve 2,
1 is a hot water valve, 22 is a center boss portion, 30 is a guide portion of the thermoelement 3, 31 is a rod, 32 is a temperature sensing portion, 5 is a bias spring that pushes up the thermoelement 3, and these are the first embodiment described above. Same as the example.

Reference numeral b denotes a spring which presses the mixing valve 2 having the center boss portion 22 inserted into the guide portion 30 against an abutting member c provided on the enlarged diameter step portion 33 of the thermoelement 3. The mixing valve 2 is mounted between the E-shaped retaining ring 42 provided on the distal end side of the portion 30 so as to push down the mixing valve 2 toward the base end side opposite to the distal end side of the guide portion 30 from which the rod 31 projects. It is.

The abutting member c for abutting against the depressed mixing valve 2 is formed by using a stepped diameter portion 33 formed on the base end side of the guide portion 30. The lower side is made to abut.

An abutting surface d between the abutting member c and the lower surface of the center boss 22 is formed in a spherical shape.

Numeral 60 is an adjusting screw cover screwed into the mounting port 18,
Reference numeral 65 denotes an adjustment screw shaft screwed into the center of the adjustment screw lid 60, and reference numeral 66 denotes a fulcrum bracket formed on an inner end surface of the adjustment screw shaft.

[0034]

As described above, in the automatic hot and cold water mixing valve according to the present invention, the center boss portion of the cylindrical mixing valve constituting the valve mechanism is loosely inserted into the guide portion of the thermoelement, and the mixing valve is formed. By pressing the mixing valve against an abutting member c fixed to the thermoelement by a spring b provided between the thermoelement and the mixing element, the mixing valve is connected to the thermoelement with a degree of freedom maintained. Therefore, when the water valve or hot water valve of the mixing valve hits the water side valve seat or hot water side valve seat, the parallelism between the water valve or hot water valve and the water side valve seat or hot water side valve seat is automatically correct. As a result, the sealability is well maintained and the assembly is significantly facilitated.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a conventional hot and cold water mixing valve.

FIG. 2 is a longitudinal sectional side view of another conventional hot and cold water mixing valve.

FIG. 3 is a vertical sectional side view of the hot and cold water mixing valve according to the present invention.

FIG. 4 is a longitudinal sectional view of a main part of the automatic hot water mixing valve when the water valve is opened and the hot water valve is closed.

FIG. 5 is a longitudinal sectional side view of another embodiment of the above.

FIG. 6 is a vertical sectional side view of the embodiment with the hot water valve side closed.

[Explanation of symbols]

A: automatic hot and cold mixing valve, a: valve mechanism, b: spring, c: abutting member, d: spherical abutting surface, 1: body, 10: valve chamber,
11 connection port, 12 connection port, 13 hot water inlet, 14 water inlet, 15 mixed water outlet, 16 connection port, 17 mixing chamber, 18 mounting port, 2 mixing valve, 20 water valve , 20a ...
Water side valve seat, 21 ... Hot water valve, 21a ... Hot water side valve seat, 22 ... Center boss part, 3 ... Thermoelement, 30 ... Guide part, 31
... Rod, 32 ... Temperature sensing part, 33 ... Expanded diameter step part, 4 ... Parts,
Reference numeral 40: support bracket, 41: washer, 42: E-shaped retaining ring, 43: regulating member, 5: bias spring, 60: adjusting screw lid, 61: operating handle, 62: adjusting screw cylinder, 63 ...
Release spring, 64 fulcrum bracket, 65 adjustment screw shaft, 66
A fulcrum bracket.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3H057 AA03 BB06 CC12 DD03 EE03 FA22 FC05 FD03 HH03 HH14 3H067 AA01 CC60 DD03 DD12 DD23 FF02 GG13

Claims (3)

[Claims] A body provided with a valve chamber in an inner cavity, a connection port for hot water supply connected to a hot water supply pipe on the outer surface side, a connection port for water supply connected to a water supply pipe, and a connection port for taking out mixed water. Within
A cylindrical valve-shaped mixing valve having a water valve formed at one end and a hot water valve formed at the other end, and a thermo-element in which a rod that can be inserted into and inserted into the guide portion by the temperature-sensitive operation of the temperature-sensing portion is connected. In the hot and cold water mixing valve into which the valve mechanism a is inserted, the center boss of the mixing valve of the valve mechanism is loosely inserted into the guide portion of the thermoelement, and the spring b provided between the mixing valve and the thermoelement, An automatic hot and cold water mixing valve characterized in that the mixing valve is pressed against an abutting member c provided in a fixed state on the thermoelement, and the mixing valve is connected to the thermoelement in a state where the degree of freedom is maintained. 2. A body in which a valve chamber is provided in an inner cavity, and a connection port for hot water supply connected to a hot water supply pipe, a connection port for water supply connected to a water supply pipe, and a connection port for taking out mixed water are provided on an outer surface side. Within
A cylindrical valve-shaped mixing valve having a water valve formed at one end and a hot water valve formed at the other end, and a thermo-element in which a rod that can be inserted into and inserted into the guide portion by the temperature-sensitive operation of the temperature-sensing portion is connected. In the hot and cold water mixing valve into which the valve mechanism a is inserted, the center boss portion of the mixing valve of the valve mechanism a is loosely inserted into the guide portion of the thermoelement, and the gap between the distal end side of the guide portion and the upper surface side of the mixing valve. , The mixing valve is urged toward the base end side of the guide portion, and the lower surface side of the mixing valve is pressed against an abutting member fixed to the thermoelement, and the mixing valve is pressed against the thermoelement. An automatic hot and cold water mixing valve characterized in that it is connected in a state where the degree of freedom is maintained. 3. The automatic hot and cold water mixing valve according to claim 1, wherein an abutment surface between the mixing valve and the abutment member is formed in a spherical shape.