JPH049947B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a water faucet incorporating an antifreeze device.

(Prior Art) In order to prevent water faucets from freezing in winter, water faucets have been known in which a valve mechanism, which is controlled by a thermostat to open when the temperature drops, is assembled into the faucet body. There is.

However, as shown in Fig. 1, the conventional type has a hole 20 inside the lower part 2a of the faucet rod 2 that is removably screwed into the faucet body 1 on the side of the secondary chamber w. Formed in a hollow chamber a with an open bottom surface communicating through the
A bottomed cylindrical housing 3 having a second valve port b on the top wall and open at the lower end is fixed therein. 2 valve body c is disposed, and furthermore, the second valve body c is disposed.
The thermostat S that controls the opening operation of the valve body c due to a temperature drop is operated by its operating rod 40.
With the side facing upward, insert the upper half side into the open opening 21 on the lower surface side of the hollow chamber a, which opens at the center of the block packing V attached to the lower end surface of the lower part 2a of the stopper rod 2. The temperature sensing part 41 side of the thermostat S is in a state of protruding from the valve port 10 corresponding to the frame packing V of the faucet main body 1 to the primary chamber y side, and in this state, the spring 42 disposed in the hollow chamber a A cylindrical portion 50 which pushes out the body 4 of the thermostat S upward and is integrally connected to the upper surface side of the second valve body c
is made to protrude above the housing 3 from the second valve port b mentioned above, enters the inner cavity of the handle portion 2b of the stopper rod 2, and the head of the adjustment screw 51 is screwed into the upper part of the cylindrical portion 50. , by making it abut against the lower surface of a spring seat 53 which is pressed down by a spring 52 installed in the inner cavity of the handle 2b of the stopper rod 2.

(Problem to be Solved by the Invention) The above-mentioned means is based on a piece packing V attached to the lower end surface of the lower part 2a of the stopper rod 2, as shown in FIG.
is formed in the faucet body 1 so as to press against the valve seat 11 around the valve spout 10 formed inside the faucet body 1 to cut off the primary chamber y side and the secondary chamber w side. When water is stopped flowing from a certain spout 1a, the primary chamber y inside the faucet main body 1 due to a drop in the temperature of the outside air.
When the water on the side cools down to around the freezing temperature, the thermostat S operates to reduce the extrusion pressure of the actuating rod 40 by sensing the temperature sensing portion 41 of the thermostat S, and thereby the second valve body c is pressed down by the pressure of the spring 52 to open the second valve port b, thereby causing water in the primary chamber y side flowing into the inner cavity of the housing 3 from the opening port 21 opened at the center of the piece packing V. The water flows out from the second valve port b to the secondary chamber w side through the hollow chamber a and the hole 20 provided therein, and then water from the primary chamber y side flows into the opened second valve port. The mouth portion 1 of the faucet body 1 is controlled to an amount corresponding to the opening degree of the faucet body 1.
The water flows out of the faucet main body 1 from a, and this flowing water acts to prevent freezing.

However, by surrounding the thermostat S with the housing 3 so that the temperature sensing part 41 protrudes toward the secondary chamber y side, the thermostat S can be attached to the faucet main body 1.
In addition, since the faucet is adiabatic with respect to the outside air and the four circumferences contact only the water on the primary chamber y side in the faucet body 1 to transfer heat, there is a problem that the sensitivity to the temperature drop of the outside air is low.

For this reason, when the valve rod 2 is turned to press the piece packing V against the valve seat 11 around the valve port 10 and the valve port 10 is closed, water remaining on the side of the secondary chamber w inside the faucet main body 1 is Komapatsuking V due to temperature drop
Even if ice forms around the valve seat 11 and in the hollow chamber a, the thermostat S located in the water on the primary chamber y side does not operate to open or close the second valve port b.
When the thermostat S is activated due to a drop in the temperature of the water in the primary chamber y side, the temperature around the second valve port b and the hole 20
There is a problem in that the water in the primary chamber y side does not flow out due to the water that has frozen around the faucet, and the stopper rod 2 also freezes and solidifies to the faucet body 1 and becomes immovable.

In addition, this type of water faucet was developed in 1983.
-As stated in Publication No. 58264, a communication passage is provided at the lower end of the stopper rod that passes through the valve body and communicates between the primary chamber side and the secondary chamber side, and the opening that communicates with the secondary chamber side is provided. The pad is brought into contact with the pad so that it can be opened and closed, and is biased toward the closing side by a spring made of a memory alloy, and the bias toward the closing side of the pad is released when the memory alloy is at a temperature just below the temperature at which water freezes. There is a means to form it so that it will return to its original shape.

However, with this method, it is difficult to correct (adjust) the operating temperature of the assembled water faucet product due to individual differences in the memory alloy used, and as a result, a large amount of water may be discharged unnecessarily. There is a problem in that some products do not open the valve at temperatures near the temperature where water gets hot or freezes.

The present invention has been made in order to solve these problems occurring with conventional means. The thermostat operates properly when the
Open the second valve port and drain the water from the primary chamber side to the second valve port.
To provide a water faucet which allows a small amount of water to flow out through a valve spout.

(Means for Solving the Problems) In the present invention, as a means for achieving this object, a piece packing is provided on the bottom surface of the lower end portion, and the lower part of the stopper rod made of a metal material that is screwed into the faucet body is provided with a piece packing. , an enlarged diameter part that moves vertically by screw fitting is provided to the handle of the stopper rod, a hollow chamber is formed within the enlarged diameter part, and the lower end of the stopper rod is provided on the bottom wall side of the hollow chamber. When the piece packing provided on the bottom of the faucet is blocking the valve opening of the faucet body,
A second valve port with a small diameter is installed to communicate the hollow chamber with the primary chamber side of the faucet body, and a second valve body for opening and closing the second valve port and the second valve body are disposed in the hollow chamber. A thermostat that controls opening and closing is installed, and a hole communicating with the secondary chamber side of the faucet body is installed in the peripheral wall of the hollow chamber.
This project introduces a water faucet made by opening a water faucet.

(Example) Next, an example of implementation will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings as in the conventional means are used for constituent members having the same effect.

In Fig. 2, 1 is the faucet main body, and the base end has a connecting cylinder part 1b that connects to the pipe that communicates with the water faucet.
A spout 1a serving as a water spout is formed at the tip. Inside the faucet body 1, there is a primary chamber y communicating with the connecting cylinder part 1b and a mouth part 1a.
A partition wall 12 separating a secondary chamber w leading to the partition wall 12, a valve port 10 opened in the partition wall 12, and a valve seat 1 around the valve port 10.
1 is installed, and a plug rod attachment opening 1c is formed on the upper surface side, into which the plug rod 2 is screwed in such a manner that it can be freely inserted and removed.

As shown in FIG. 3, the stopper rod 2 consists of a rod-shaped handle 2b and a lower part 2a formed by expanding its diameter toward the lower end so as to bulge out around the four circumferences. is inserted into the faucet main body 1 through the stopper rod attachment port 1c, and a threaded portion 22 formed on the upper half of the circumferential surface of the lower part 2a is formed on the inner circumferential surface of the stopper rod attachment port 1c. 13, the handle portion 2b is assembled to the faucet main body 1 in such a manner that it protrudes upward from the above-mentioned stopper rod attachment port 1c. As shown in FIG. 3, this stopper rod 2 has a handle 2b and a diameter-enlarged lower part 2a continuous to the lower end thereof, each of which is formed separately, and also serves as an adjustment screw. The connecting screw portions 23, 23 are connected by screwing together, and their interiors are hollow.

A is a hollow chamber formed in the inner cavity of the lower part 2a of the stopper rod 2, and a small diameter communication passage 25 is opened in the center of the bottom wall 24 of the lower part 2a of the stopper rod 2, which forms the bottom wall of the hollow chamber. It communicates with the lower part 2a of the stopper rod 2 through the hole 20 provided in the peripheral wall 26 of the lower part 2a of the stopper rod 2, and is connected to the bottom of the bottom 2a of the stopper rod 2 through the hole 20. It communicates with the lateral exterior at the top. And the communication path 25
A second valve port b is formed at the inner end of the valve.

Furthermore, a second valve body c for opening and closing the second valve port b, and a thermostat S for controlling the second valve body c to close due to a temperature drop are incorporated in the hollow chamber a. Thermostat S is
The temperature-sensitive substance such as wax sealed in the temperature-sensing part 41 increases the pressure due to temperature rise, and the temperature-sensing part 41
This is a conventionally known thermoelement in which an actuating rod 40, which is inserted into and removably inserted into a guide cylinder portion 43 continuous with the thermoelement, is pushed out, and the actuating rod 40 is placed in the hollow chamber a in an upward position. The body 4 consisting of the temperature sensing part 41 and the guide cylinder part 43 is pushed up by the spring 52, and the head of the actuating rod 40 protruding from the upper end of the body 4 is moved to the top of the stopper rod 2. The actuating rod 40 is pushed out from the body 4 at room temperature by abutting against the lower surface of the spring seat 45 which is pushed down by the relief spring 44 inserted into the cavity 27 formed in the inner cavity of the handle 2b. The body 4 moves downward against the pressure of the spring 52 due to the reaction force of the pressure applied, and due to the decrease in pressure pushing out the actuating rod 40 due to the temperature drop, the body 4 moves downward against the pressure of the spring 52.
It is made to rise by the spring pressure of 2.

The second valve body c is integrally assembled to the bottom surface of the body 4 of the thermostat S incorporated in the hollow chamber a, and controls opening and closing of the second valve port b by the above-mentioned lifting and lowering operation of the body 4. I'm starting to do that.

The connecting screw portions 23, 23 between the handle portion 2b and the lower portion 2a of the stopper rod 2 described above are caused by a decrease in the extrusion pressure of the actuating rod 40 due to a temperature drop, and the body 4 is released by the spring 5.
The second valve body c is raised by 2 and provided on the bottom surface of the second valve body c.
is used to adjust the operating temperature (set temperature) when performing the operation of opening the second valve port b.
That is, by rotating the handle 2b with respect to the lower part 2a of the stopper rod 2, the position of the spring seat 45 is vertically displaced with respect to the body 4 of the thermostat S, thereby adjusting the set temperature. This connecting screw part 2
3 and 23 are locked with adhesive or the like after the adjustment is completed. To adjust the set temperature, the bottom wall 24 of the lower part 2a of the stopper rod 2 is formed into a screw cap shape separate from the lower part 2a and is screwed onto the lower part 2a.
In some cases, this operation is performed by vertically displacing the valve seat of the second valve port b formed in the bottom wall 24 of the thermostat S relative to the lower part 2a.

Note that 46 is a stopper that limits the operation of the relief spring 44, which has a stronger spring pressure than the spring 52 that pushes up the body 4 of the thermostat S, to push down the spring seat 45 to a certain position. , is fixed to the inner peripheral surface of the handle portion 2b.

(Function) The embodiment device configured as described above functions as follows.

When the outside temperature around the water faucet A is higher than the freezing temperature of water, the thermostat S is activated and the second valve body c closes the second valve port b, so that the handle of the tap rod 2 is closed. By turning the handle 6 attached to the upper end of the part 2b, the piece packing V provided on the bottom surface of the lower part 2a of the stopper rod 2 moves forward and backward against the valve seat 11 around the valve opening 10 provided in the faucet body 1. , water shutoff and water flow control are performed as usual.

As a result, as shown in FIG. 2, when the top packing V closes the valve port 10 and the water is cut off in which the primary chamber y side and the secondary chamber w side in the faucet main body 1 are cut off, the faucet The hollow chamber a in the lower part 2a of the rod 2 is 1
It is cut off from the next chamber y side and is kept in communication with the secondary chamber w side through a hole 20 provided in the peripheral wall of the lower part 2a of the stopper rod 2.

For this reason, the thermostat S installed in the hollow chamber a has its four circumferences cut off from the water in the primary chamber y side, and connects the mouth portion 1a of the faucet body 1, the secondary chamber w, and the hole 20. When the outside air temperature drops to near the freezing point, the second valve body c is closed regardless of the temperature of the water on the primary chamber y side in the faucet main body 1. It now operates to pull the stopper away from the second valve port b, and by turning the stopper rod 2, the piece packing V is moved around the valve seat 1 around the valve port 10.
1 to prevent water remaining in the secondary chamber w side of the faucet body 1 from freezing due to a drop in temperature and solidifying the stopper rod 2 to the faucet body 1. I come to do it.

Further, in the thermostat S incorporated in the hollow chamber 2a in the lower part 2a of the stopper rod 2, the operating rod 40 made of a metal rod is connected to the stopper rod 2 made of a metal material through a stopper 46 (retaining ring) made of a metal material. Because it is thermally connected to the handle 2b of the faucet rod 2, even when the faucet body 1 is covered with a cold-proofing material, the handle 2b of this stopper rod 2, which protrudes outside from the cold-proofing material, becomes a heat radiator. , making the operation more sensitive to temperature drops.

In addition, when assembling the water faucet A product, a second valve is attached to the tap rod 2 so as to open and close the second valve port b.
The valve opening operation controlled by the thermostat S of the valve body c is inspected by a product test before or after assembling the stopper rod 2 to the faucet main body 1, and the enlarged diameter part 2a is checked by the handle part 2a. By rotating the faucet against the water, it can be easily corrected so that the valve opens at a predetermined temperature, and the product of the water faucet A to be assembled can be made stable without variation.

(Effect of the invention) As explained above, the water faucet A according to the present invention
The stopper rod 2 is made of a metal material and has a piece packing V on the bottom surface of the lower end and is screwed onto the faucet main body 1.
An enlarged diameter part 2a that moves vertically by screw fitting with the handle part 2b of the stopper rod 2 is provided at the lower part of the stopper rod 2, and a hollow chamber a is formed in the enlarged diameter part 2a.
In a state where the piece packing V provided on the bottom surface of the lower end of the stopper rod 2 closes the valve port 10 of the faucet body 1, the hollow chamber a is
A second valve port b with a small diameter that communicates with the next chamber side y is installed, and in the hollow chamber a there is a second valve body c that opens and closes the second valve port b, and a second valve body c that opens and closes the second valve body c. A controlling thermostat S is assembled, and a hole 2 is provided in the peripheral wall of the hollow chamber a, which communicates with the secondary chamber side w of the faucet main body 1.
0. Therefore, when assembling the water faucet A product, the second valve body c assembled to the tap rod 2 to open and close the second valve spout b,
Valve opening operation controlled by thermostat S,
Corrections (adjustments) can be easily made to ensure that the temperature is properly set. Then, when the thermostat S attached to the stopper rod 2 is turned to open the second valve port b provided on the stopper rod 2 when the temperature drops, when the stopper rod 2 is turned to make the water stop state. , so that the four circumferences of the thermostat S are cut off from the water in the primary chamber y, and the faucet is surrounded by outside air flowing into the secondary chamber w through the mouth 1a of the faucet main body 1. The second valve port b and the second valve body c, which are installed in the tap rod 2 of the water faucet A to prevent freezing, are attached to the rod 2, and the second valve port b and the second valve body c, which are provided on the tap rod 2 of the water faucet A to prevent freezing, are installed in the tap body 1 of the water faucet A. Regardless of the temperature of the water in the next room y, the valve opens due to a change in outside temperature. The thermostat S controls the operation of the second valve port b and the second valve body c.
However, by being directly surrounded by the stopper rod 2 made of a metal material and thermally connected to the handle 2b of the stopper rod 2, even when the faucet body 1 is covered with a cold protection material, The handle 2b of the stopper rod 2 protruding from the cold protection material serves as a heat radiator of the thermostat S.

Therefore, the operating temperature of the second valve port b and the second valve body c for preventing freezing, which are incorporated in the tap rod 2 of the water faucet A, can be easily adjusted when assembling the product, and the operation can be adjusted easily. Water faucet products that respond more sensitively to changes in outside temperature and that accurately prevent freezing will become available.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of the conventional means, FIG. 2 is a longitudinal sectional side view of an embodiment of the device of the present invention, and FIG. 3 is a longitudinal sectional side view of the same stopper rod. Explanation of drawing symbols, A...Water faucet, S...Thermostat, V...Koma packing, a...Hollow chamber, b...Second valve opening, c...Second valve body, w...2
Next room, y...Primary room, 1...faucet body, 1a...
Mouth part, 1b... Connection cylinder part, 1c... Stopper rod attachment port,
10... Valve port, 11... Valve seat, 12... Bulkhead, 1
3... Threaded part, 2... Stopper rod, 2a... Lower part, 2b
...Handle, 20...Hole, 21...Open opening, 22
...Threaded part, 23, 23... Connection threaded part, 24...
...Bottom wall, 25...Communication path, 26...Peripheral wall, 27...
...Vacancy, 3...Housing, 4...Body, 40
... Operating rod, 41 ... Temperature sensing part, 42 ... Spring, 43 ... Guide tube section, 44 ... Relief spring, 4
5... Spring catch, 46... Stopper, 50...
Cylindrical part, 51... Adjustment screw, 52... Spring, 53
...Spring seat, 6...Stopper.

Claims (1)

[Claims] 1. A stopper rod 2 made of a metal material and equipped with a piece packing V on the bottom surface of the lower end and screwed onto the faucet body 1.
An enlarged diameter part 2a that moves vertically by screw fitting with the handle part 2b of the stopper rod 2 is provided at the lower part of the stopper rod 2, and a hollow chamber a is formed in the enlarged diameter part 2a.
In a state where the piece packing V provided on the bottom surface of the lower end of the stopper rod 2 closes the valve port 10 of the faucet body 1, the hollow chamber a is
A second valve port b with a small diameter that communicates with the next chamber side y is installed, and in the hollow chamber a there is a second valve body c that opens and closes the second valve port b, and a second valve body c that opens and closes the second valve body c. A controlling thermostat S is assembled, and a hole 2 is provided in the peripheral wall of the hollow chamber a, which communicates with the secondary chamber side w of the faucet main body 1.
A water faucet that opens 0.