JPH09280416A - Combination faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To forcibly and rapidly close an exhaust opening when mixed water temperature abnormally rises, and secure safety, by arranging an exhaust opening closing valve at one end of a wax temperature sensing element, and also arranging an auxiliary channel closing valve on the other end side of the wax temperature sensing element. SOLUTION: In the case that low temperature water W supplied from a main channel is an appropriate temperature, an auxiliary channel opening valve 13 is brought into contact with a partitioning wall 17, and the low temperature water W is exhausted from an exhaust opening P. However, when the temperature of the low temperature water W supplied is lowered, a wax temperature sensing element 5 is shrunk, a piston rod 6 is shrunk, and the auxiliary channel opening valve 13 is separated from the partitioning wall 17. Therefore, high temperature water H led to flow into an auxiliary flowing duct 3 is led to flow into a mixing chamber 21 through an outflow hole 14, mixed with the low temperature water W in the mixing chamber 21, and exhausted from the exhaust opening P. Also, when the piston rod 6 is extended, the wax temperature sensing element 5 is moved against a spring 10, therefore an exhaust opening closing valve 7 closes the exhaust opening P, and prevents the ejection of boiling water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixing faucet for mixing hot water and low temperature water to discharge hot water having a predetermined set temperature.

[0002]

2. Description of the Related Art Generally, in order to discharge high temperature water and low temperature water to discharge mixed water having a predetermined set temperature, low temperature water is used as a main stream and high temperature water is mixed with it to a predetermined set temperature. There are A type and B type which makes high temperature water a main stream and mixes low temperature water to this to set a predetermined set temperature. In both types, low temperature water or high temperature water supplied from the main flow path. Generally, a mixing faucet having an outlet for internally mixing and discharging high temperature water or low temperature water for temperature adjustment supplied from a sub-flow path is used.

Since this mixed faucet is widely used in bathrooms, washrooms, etc., it is necessary to take safety measures to prevent accidents and the like caused by the spouting of hot water. Conventionally, hot water discharged from the mixed faucet is required. If an abnormality occurs such that the temperature of the above is higher than a predetermined temperature, the hot water flow path is blocked on the upstream side of the mixing faucet, or the mixing faucet is on the downstream side of the mixing faucet. Safety measures have been taken such as attaching an independent and separate flow path forced closing means.

[0004]

However, in the above-mentioned prior art, since the mixing mechanism of the high temperature water and the low temperature water and the mechanism for forcibly discharging the discharge of the mixed water at the time of abnormality are separate, both the A and B types are provided. In addition, if safety measures are included, the cost is high, a lot of installation space is required, and adjustment is difficult and responsiveness is poor. Also, high temperature water is supplied from the solar water heater, and low temperature water is supplied from the tap water.
In the case of using the flow path of another system, if the flow path of one system is stopped due to a failure, there is a risk that hot water will continue to spout without responding.

The present invention has been proposed in view of the above circumstances, and when the temperature of the mixed water rises abnormally, the exhaust port is forcibly closed by responding to this abnormally,
It surely blocks jetting of hot water, has a simple structure, can be manufactured inexpensively and compactly, and can be easily adjusted.
It is an object of the present invention to provide a practically convenient and safe mixed faucet in which the blockage of the outlet is automatically released without requiring a special reset operation when the temperature of the mixed water becomes normal.

[0006]

In order to solve the above-mentioned problems, the present invention provides, in the A type, low-temperature water supplied from the main channel and high-temperature water for temperature adjustment supplied from the sub-channel, A wax temperature sensor is installed in the body of a mixing faucet that has an outlet for mixing and discharging it inside, and at one end of the wax temperature sensor, the piston rod has a predetermined length due to the expansion of the wax temperature sensor. When the wax temperature sensor is extended, a valve for closing the discharge port is provided to close the discharge port by moving the wax temperature sensor, and the wax temperature sensor on the other end side where the piston rod extends extends due to the contraction of the wax temperature sensor. The mixed water faucet is characterized in that a sub-channel closing valve is provided to open the sub-channel by the movement of the wax temperature sensing element when the piston rod contracts by a predetermined length.

Further, in the B type, a high temperature water supplied from the main flow path and a low temperature water for temperature adjustment supplied from the sub flow path are mixed in the inside and discharged. A wax temperature sensor is inserted in the main body, and when the wax rod expands to a predetermined length due to the expansion of the wax temperature sensor at one end of the wax temperature sensor, the wax temperature sensor moves and the discharge port A wax outlet valve that closes the wax rod, and at the other end of the wax temperature sensor where the piston rod extends, when the piston rod contracts a predetermined length due to the contraction of the wax temperature sensor, The mixed water faucet is configured by providing a sub-flow path closing valve that closes the sub-flow path by moving the temperature sensitive body.

Since the mixed faucet of the present invention is constructed by the means as described above, in a normal use condition,
In the A type, the low temperature water supplied from the main flow channel is mixed with the high temperature water for temperature adjustment supplied from the sub flow channel, and the mixed water raised to an appropriate temperature is discharged from the discharge port, and in the B type, The high temperature water supplied from the main channel is mixed with the low temperature water for hot water adjustment supplied from the sub channel, and the mixed water lowered to an appropriate temperature is discharged from the discharge port. If the temperature rises abnormally,
In both A and B types, the expansion of the wax temperature sensor causes the piston rod to extend for a predetermined length, and the exhaust port closing valve provided at one end of the wax temperature sensor immediately closes the exhaust port, forcing ejection of hot water. Will be blocked.

Further, when the temperature of the mixed water returns to normal, the wax temperature sensor contracts due to the contraction of the wax temperature sensor, the wax temperature sensor returns to its original position, and the exhaust port is closed by the exhaust port closing valve. It is released, and the mixed water at an appropriate temperature is discharged again from the discharge port without any special reset operation. It should be noted that the temperature of the mixed water is adjusted by the wax flow sensor to adjust the temperature of the temperature of the sub-flow passage, which is supplied by the sub-flow passage opening valve or sub-flow passage closing valve that operates according to the expansion / contraction length of the piston rod. It will be automatically controlled according to the flow rate of high-temperature water or low-temperature water.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a sectional view of an A type mixing faucet showing a first embodiment of the present invention, and FIG. 2 is a right side view thereof. FIG. 3 is a cross-sectional view of the mixed faucet showing a state in which the mixed water is discharged from the outlet under normal conditions.
FIG. 4 is a cross-sectional view of the mixed faucet showing a state in which the outlet is closed at the time of abnormality.

In the figure, reference numeral 1 denotes a main body of a mixing faucet, which is a cylindrical body, and a male screw 9 is formed on an outer peripheral wall extending from one end to about 2/3.
It is composed of a cylindrical portion 1a that is cut from and a T-shaped pipe joint portion 1b into which the cylindrical portion 1a is screwed. The low temperature water W supplied from the main flow path is provided in the center of the T-shaped pipe joint portion 1b. A mainstream duct 2 for guiding is formed in a vertical direction. Further, at one end of the cylindrical portion 1a on the side screwed into the T-shaped pipe joint portion 1b, a sub-flow duct 3 for guiding the temperature adjusting high-temperature water H supplied from the sub-flow passage is provided in the axial direction. And cylindrical part 1a
A discharge port P for discharging the mixed water M is provided at the end of the. Reference numeral 5 denotes a wax temperature sensing element interposed in the main body 1 of the mixed water faucet, and comprises a wax accommodating portion 19 having an enlarged diameter and a piston rod 6 which expands and contracts according to the temperature sensing. An edge 20 of the discharge port P, which is close to the wax temperature sensitive body 5, is provided with a taper and is formed in a shape of a skirt.

Reference numeral 7 denotes a discharge port closing valve provided at one end of the wax temperature sensitive body 5, which is made of thick disk-shaped synthetic resin and fixed by an E ring 8. The outer diameter D ₁ of the outlet opening / closing valve 7 is slightly larger than the diameter D _{2 of the} outlet 4 so that D ₁ > D ₂ . Reference numeral 10 denotes a spring interposed between the inner wall corner of the cylindrical portion 1a near the discharge port P and the end surface of the wax accommodating portion 19. Reference numeral 11 denotes a lid fixed to the tip opening of the sidestream duct 3, and the tip of the piston rod 6 is fixed to the lid 11.

Reference numeral 12 is an eyebrow-shaped inflow hole provided in the lid 11, so that the high-temperature water H for temperature adjustment supplied from the auxiliary flow path is introduced into the auxiliary flow duct 3 through this inflow hole 12. Has become. Reference numeral 13 denotes a thick disc-shaped sub-channel opening valve provided on the other end side of the wax temperature sensing body 5 from which the piston rod 6 extends, and is supported slidably on the base of the piston rod 6 and As the rod 6 expands and contracts, it can slide in the sub-flow duct 3 in the axial direction. Reference numeral 17 denotes a partition wall provided between the expanded wax housing portion 19 of the wax temperature sensitive body 5 and the auxiliary flow path opening valve 13, and an outlet hole 14 is provided at the center of the partition wall 17. The high-temperature water H for temperature adjustment introduced into the sub-flow duct 3 through the inflow hole 12 provided in the lid 11 passes through the outflow hole 14 and is mixed with the wax accommodating portion 19 located downstream thereof. It is designed to flow into the chamber 21. When the sub-flow passage opening valve 13 comes into contact with the partition wall 17, the outflow hole 14 is closed by the sub-flow passage opening valve 13. Reference numeral 30 is a through hole provided in the peripheral wall of the cylindrical body 1a, and the low temperature water W flows into the mixing chamber 21 through the through hole 30.

Next, 15 is a spring interposed between the lid 11 and the auxiliary flow path opening valve 13 in the auxiliary flow duct 3. In addition, in this embodiment, the main body 1 of the mixed faucet is composed of two members of the cylindrical portion 1a and the T-shaped pipe joint portion 1b. May be.

Next, the operation of the A type mixed faucet having the above-mentioned structure will be described. In the state of FIG. 1, since the low-temperature water W supplied from the main flow channel has just the proper temperature, the sub-flow channel opening valve 13 is in contact with the partition wall 17, and the temperature of the mixed faucet inside the main body 1 is adjusted. Of the high temperature water H for use in water is blocked, and the low temperature water W supplied into the main body 1 is directly discharged to the outlet P.
The state of being discharged more.

In this state, if the temperature of the low temperature water W supplied from the main flow channel decreases, the wax temperature sensing element 5 contracts in response to the temperature reduction, and the piston rod 6 depending on the degree of temperature sensing. Will shrink. Since the tip of this piston rod 6 is fixed to the lid 11, the wax temperature sensor 5 moves to the right, and the auxiliary flow path opening valve 13
Moves away from the inner bottom wall 17 and slides in the auxiliary flow duct 3 in the axial direction against the spring 15 to be in the state shown in FIG.

In this state, the inflow hole 12 of the lid 11
The temperature-adjusting high-temperature water H that has flowed into the sub-flow duct 3 via the water flows into the mixing chamber 21 through the outflow holes 14, and is mixed therewith with the low-temperature water W supplied from the main flow path to increase the water temperature. By raising the temperature, the mixed water M having an appropriate temperature is discharged from the discharge port P.

When the high temperature water H is mixed with the low temperature water W to raise the temperature of the water, the wax temperature sensing element 5 expands and the piston rod 6 extends, and the sub flow passage opening valve 13 is divided by the spring 15 into the partition wall 17. 1, the state shown in FIG. 1 is reached, and the high temperature water H for temperature adjustment is prevented from flowing into the mixing chamber 21 to prevent the temperature rise of the mixed water M.

As described above, by repeating the state shown in FIG. 1 and the state shown in FIG. 3, the temperature of the mixed water M discharged from the discharge port P of the mixed water faucet is controlled within an appropriate temperature range. Become. Next, when the temperature of the low-temperature water W or the high-temperature water H for temperature adjustment supplied from the main flow channel suddenly rises for some reason, the wax temperature sensing element 5 immediately responds to the temperature rise and expands, and the piston rod 6 further extends from the state shown in FIG. 3 to the state shown in FIG.

When the piston rod 6 extends to the state shown in FIG. 4, the wax temperature sensing element 5 moves largely to the left against the spring 10, so that the discharge port provided at one end of the wax temperature sensing element 5 is blocked. The valve 7 is pushed into the discharge port P and immediately closes the discharge port P, so that the spouting of hot water or the like is reliably prevented.

When the wax temperature sensor 5 senses that the temperature is normal, the wax temperature sensor 5 contracts and the piston rod 6 contracts again, and the wax temperature sensor 5 automatically returns to its original position. It will return to normal operation. Next, FIG. 5 is a sectional view of a B-type mixed faucet showing a second embodiment of the present invention, and FIG. 6 is a right side view thereof. or,
FIG. 7 is a sectional view of the mixed faucet showing a state where the mixed water is discharged from the outlet under normal conditions, and FIG. 8 is a sectional view of the mixed faucet showing a state where the outlet is closed under abnormal conditions.

The configuration of the B type mixed faucet shown here is as follows.
Since the structure of the A-type mixed faucet shown above is the same in many respects, the same members are designated by the same reference numerals, and a duplicate description will be omitted to focus on the differences. B shown here
In the type of mixed faucet, the high temperature water H is supplied to the main flow path, and the low temperature water W for temperature adjustment is supplied to the sub flow path. Has become.

Further, the B type mixed faucet shown here is not provided with a sub flow path opening valve 13 and a spring 15 which slide in the sub flow duct 3 as shown in the A type mixed faucet. Instead, on the other end side of the wax temperature sensor 5 where the piston rod 6 extends, when the piston rod 6 contracts by a predetermined length due to the contraction of the wax temperature sensor 5, the wax temperature sensor A sub-flow passage closing valve 18 for closing the sub-passage by the movement of 5 is provided, and when the piston rod 6 contracts by a predetermined length, the sub-flow passage closing valve 18 contacts the partition wall 17 on the side of the sub-flow duct 3. The contact holes are in contact with each other to close the flow holes 16 provided in the partition wall 17.

Next, the operation of the B type mixing faucet having the above-mentioned structure will be described. In the state shown in FIG. 5, since the high temperature water H supplied from the main flow channel has just the proper temperature, the auxiliary flow channel closing valve 18 is in contact with the partition wall 17, and the mixing chamber 2
1 shows a state in which the low-temperature water W for temperature adjustment is prevented from flowing into the inside 1, and the high-temperature water H supplied into the main body 1 is discharged from the discharge port P as it is.

In this state, if the temperature of the high-temperature water H supplied from the main flow path rises, the wax temperature sensitive body 5 expands in response to the temperature rise, and the piston rod 6 moves in accordance with the degree of the sensitivity. It will grow.

Since the tip of the piston rod 6 is fixed to the lid 11, the wax temperature sensor 5 moves to the left, and the auxiliary flow path closing valve 18 separates from the partition wall 17 and resists the spring 10 against the shaft. 6 and moves to the state shown in FIG. In this state, the low temperature water W for temperature adjustment that has flowed in from the side of the auxiliary flow duct 3 through the inflow hole 12 of the lid 11 flows into the mixing chamber 21 through the flow hole 16 and is supplied from the main flow path here. It is mixed with the high temperature water H thus produced to lower the water temperature, and the mixed water M having an appropriate temperature is discharged from the outlet P.

When the low temperature water W is mixed with the high temperature water H to lower the temperature of the water, the wax temperature sensing element 5 contracts and the piston rod 6 contracts. The partition wall 17 on the outside of the duct 3 is brought into contact with the partition wall 17, and the state shown in FIG. 5 is established. Thus, the inflow of the low temperature water W is blocked, and the temperature drop of the mixed water M is prevented. Thus, by repeating the state shown in FIG. 5 and the state shown in FIG. 6, the temperature of the mixed water M discharged from the discharge port P of the mixed water faucet is controlled within an appropriate temperature range.

Next, when the temperature of the high-temperature water H or the low-temperature water W for temperature adjustment supplied from the main flow path suddenly rises for some reason, the wax temperature sensor 5 immediately responds to the temperature rise and expands. The piston rod 6 further extends from the state shown in FIG. 6 to the state shown in FIG. When the piston rod 6 extends to the state shown in FIG. 7, the wax temperature sensor 5 moves largely to the left against the spring 10.
The discharge port closing valve 7 provided at one end of the wax temperature sensing element 5 is pushed into the discharge port P and immediately closes the discharge port P, thereby reliably blocking the ejection of hot water or the like.

When the wax temperature sensor 5 is responsive to the normal temperature, the wax temperature sensor 5 contracts, the piston rod 6 contracts again, and the wax temperature sensor 5 automatically returns to its original position. It will recover and operate normally.

The structure of the outlet closing valve, the sub-flow path opening valve 13 or the sub-flow path closing valve 18 shown in the above A and B type mixed faucets is not limited to the illustrated form. It goes without saying that various design changes can be made. Further, the main body 1 may be integrally configured without being divided into the cylindrical portion 1a and the T-shaped pipe joint portion 1b.

[0033]

As described above in detail, according to the present invention, when the temperature of the mixed water rises abnormally, the discharge port can be forcibly closed in response to the abnormal temperature rise. It is possible to reliably prevent spouting of hot water or the like.
Further, the mechanism for mixing the high-temperature water and the low-temperature water and the mechanism for preventing the discharge of the mixed water in the event of an abnormality are integrated, so that the structure is simple, inexpensive and compact can be manufactured, and the adjustment is easy. In addition, even if the function of preventing the discharge of the mixed water has worked, if the temperature of the mixed water returns to normal, no special reset operation is required and the blockage of the discharge port will be automatically released, so handling is also possible. It is possible to provide a mixed faucet which has many advantages such as being easy and which can be widely applied not only to a bathroom or a washroom but is practically extremely convenient. If the main body 1 is constructed by combining the cylindrical portion 1a and the T-shaped pipe joint portion 1b, the cylindrical portion 1 having an outer diameter that conforms to the standard of the T-shaped pipe joint.
By simply preparing a in advance, it is possible to easily add a mixing function to an existing piping system, and it has extremely high versatility. Further, in this case, the cylindrical portion 1 which is the main portion
Since only a can be easily removed, it is extremely convenient for maintenance and inspection.

[0034]

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an A type mixed faucet showing a first embodiment of the present invention.

FIG. 2 is a right side view of the mixed faucet shown in FIG.

FIG. 3 is a cross-sectional view of the mixed faucet shown in FIG. 1, showing a state in which mixed water is discharged from a discharge port in a normal state.

FIG. 4 is a cross-sectional view of the mixing faucet shown in FIG. 1, showing a state in which a discharge port is closed at the time of abnormality.

FIG. 5 is a cross-sectional view of a B-type mixed faucet showing a second embodiment of the present invention.

FIG. 6 is a cross-sectional view of the mixed faucet shown in FIG. 5, showing a state in which mixed water is discharged from a discharge port in a normal state.

FIG. 7 is a cross-sectional view of the mixed faucet shown in FIG. 5, showing a state in which a discharge port is closed at the time of abnormality.

[Explanation of symbols]

 1 Main body of mixed faucet 1a Cylindrical part 1b T-type pipe joint part 2 Mainstream duct 3 Substream duct 5 Wax temperature sensor 6 Piston rod 7 Discharge port closing valve 8 E-ring 10 Spring 11 Lid 12 Inflow hole 13 Subchannel Open valve 14 Outflow hole 15 Spring 16 Flow hole 17 Partition wall 18 Sub-flow path closing valve 19 Wax container 20 Edge 21 Mixing chamber 30 Through hole H High temperature water W Low temperature water M Mixed water P Discharge port

Claims (3)

[Claims] 1. A wax feeling is provided in a main body of a mixing faucet having an outlet for mixing and discharging low temperature water supplied from a main channel and high temperature water for temperature adjustment supplied from a sub channel. An outlet through which a warm body is inserted and at one end of the wax body, when the wax body extends by a predetermined length due to expansion of the body, the wax body moves to close the outlet. Along with the blocking valve provided, the other end of the wax temperature sensing body from which the piston rod extends extends from the wax temperature sensing body when the piston rod contracts a predetermined length due to the contraction of the wax temperature sensing body. A mixed faucet characterized in that a sub-flow path closing valve for opening the sub-flow path by movement is provided. 2. A wax feeling is provided in a main body of a mixing faucet having an outlet through which high temperature water supplied from a main channel and low temperature water for temperature adjustment supplied from a sub channel are mixed and discharged inside. An outlet through which a warm body is inserted and at one end of the wax body, when the wax body extends by a predetermined length due to expansion of the body, the wax body moves to close the outlet. Along with the blocking valve provided, the other end of the wax temperature sensing body from which the piston rod extends extends from the wax temperature sensing body when the piston rod contracts a predetermined length due to the contraction of the wax temperature sensing body. A mixed water faucet provided with a sub-flow path closing valve for closing the sub-flow path by movement. 3. The main body of the mixing faucet is constituted by a cylindrical portion having a wax temperature sensor interposed therein and a T-shaped pipe joint portion screwed with the cylindrical portion. The described mixed faucet.