JP2004027512A - Valve device with freezing preventive function and faucet using this valve device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a valve device with a freezing preventive function for automatically performing freezing preventive operation, and a faucet using this valve device. <P>SOLUTION: This valve device has a top-shaped member 2 having small diameter parts 2a and 2b in upper-lower parts, having a large diameter part 2c and a first elastic member 2d fitted in from below in the lower small diameter part and a plug bar 4 for housing this top-shaped member. The plug bar is composed of a plug bar upper member 5 and a plug bar lower member 13. This plug bar lower member is fixed in a state of fitting an annular second elastic member 16, and has a valve seat part 20 for allowing the first elastic member to abut and separate in a state of projecting upward from the center of the bottom 14a, and has a draining horizontal hole 21 in a peripheral surface. The plug bar lower member has a draining vertical hole 22. The plug bar lower member separates the first elastic member 2d by energizing force of a coil spring 25 by contracting when at a prescribed temperature or less, and has a spring 26 composed of a shape memory alloy material for forming a draining passage on the upper side of the large diameter part. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a valve device with an antifreezing function and a faucet using the same.
[0002]
[Prior art]
For example, as shown in FIG. 3, a faucet main body (body) 63 having an inflow port 60, an outflow port 61, and a plug insertion opening 62, and can be vertically moved from the opening 62 with respect to the faucet body (body) 63. And a valve body 65 provided at a lower end portion of the plug bar 64, and a valve 66 provided inside the faucet body by operating a handle 66 provided at an upper end portion of the plug bar 64. A so-called horizontal faucet 69 that adjusts the amount of water discharged from the outlet 61 by bringing the valve body 65 into contact with the seat (seat portion) 67 or separating the valve body 65 from the valve seat 67. is there. The valve body 65 includes a small-diameter shaft portion 65a, an annular elastic body 65b fitted into a lower portion of the small-diameter shaft portion 65a, and a nut member screwed to the small-diameter shaft portion 65a from below the elastic body 65b. Consists of The inflow port 60 communicates with a downstream end of a water stopcock whose upstream end is connected to a pipe via a connection pipe, and a water supply flow path i to a valve seat 67 is formed. Reference numeral 68 denotes an insertion hole into which the upper portion of the small-diameter shaft portion 65a is vertically movably inserted.
[0003]
The connection pipe is provided with a drain hole which is usually closed by a plug to prevent the residual water remaining in the water supply channel i from freezing in, for example, a cold region. I have. Then, at the time of the freeze prevention operation, after closing the water stopcock with respect to the horizontal water tap 69 in a state where the valve body 65 is closed, the blind plug is removed from the drain hole. Thereby, the residual water in the water supply channel i is discharged to the outside before freezing.
[0004]
[Problems to be solved by the invention]
However, this freeze prevention operation was performed by a person.
[0005]
The present invention has been made in consideration of the above-mentioned matters, and an object of the present invention is to provide a valve device with an anti-freezing function capable of automatically performing an anti-freezing operation and a faucet using the same.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, a valve device with an anti-freezing function of the present invention has a small diameter portion at the top and bottom, a large diameter portion between the upper small diameter portion and the lower small diameter portion, and the lower small diameter portion. A top-type member having a first elastic member fitted from below, and a stopper rod having an internal storage space in which the top-type member is vertically movably accommodated. The member, the plug lower member is detachably attached to the plug upper member, and comprises a plug lower member forming the internal storage space with the plug upper member, the plug lower member is a bottomed cylindrical shape, A small-diameter portion fixed in a state in which the annular second elastic member is fitted is provided in a state protruding downward from the center of the bottom, and the first elastic member is protruded upward from the center of the bottom. Has a valve seat that contacts and separates, and has a horizontal hole for drainage on the peripheral surface. Further, the lower plug member has a vertical hole for draining vertically penetrating the valve seat portion, the bottom and the small diameter portion, and further, the lower plug member has the large diameter portion. A coil spring that constantly urges upward is provided below the large-diameter portion in the internal housing space, and when the temperature is equal to or higher than a predetermined temperature, the large-diameter portion is urged downward with an urging force larger than the coil spring. While the first elastic member is in contact with the valve seat portion, when the temperature is equal to or lower than a predetermined temperature, the first elastic member is contracted to separate the first elastic member from the valve seat portion by the urging force of the coil spring, and thereby, A spring made of a shape memory alloy material forming a drainage flow path from the vertical hole to the outside through the internal storage space to the outside from the horizontal hole is provided above the large diameter portion in the internal storage space.
[0007]
Further, the present invention provides, from another viewpoint, a water supply flow passage, a discharge flow passage, a faucet body having a valve seat and a plug insertion opening located between the two flow passages, and the above-described plug through the plug insertion opening. Provided is a faucet using a valve device with an antifreeze function, wherein the valve device with an antifreeze function is detachably mounted.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
1 and 2 show an embodiment of the present invention. In this embodiment, a faucet having an inflow port, an outflow port and an opening for inserting a plug rod and having a faucet body (body) having a valve seat therein is employed.
[0009]
In FIG. 1, a valve device 1 with an anti-freezing function has a top member 2 and an internal accommodation space S in which the top member 2 is vertically movable (movable in a vertical direction indicated by a double arrow A). Becomes more and more with the plug 4.
[0010]
The stopper rod 4 includes a stopper rod upper member 5 and a stopper rod lower member 13 detachably mounted on the stopper rod upper member 5 and forming the internal accommodation space S with the stopper rod upper member 5. .
[0011]
The top-shaped member 2 has a cylindrical upper and lower diameter portion 2a located on the upper side and longer in the vertical direction (A direction), and an upper and smaller diameter portion located on the lower side in the vertical direction (A direction) than the upper small diameter portion 2a. The lower small-diameter portion 2b having an equilateral trapezoidal shape with a vertical cross-section smaller than 2a, the large-diameter portion 2c located between the small-diameter portions 2a and 2b and shorter in the vertical direction (A direction), and the lower small-diameter portion 2b fitted from below. (A first elastic member) 2d.
[0012]
The stopper rod upper member 5 includes, in order from the top, a cylindrical outer screw portion 6, a cylindrical intermediate portion 7 having a larger diameter and longer in the vertical direction (A direction), and a nut portion 8 having a larger diameter than the intermediate portion 7. It is composed of The nut portion 8 has an external thread 8a on the outer peripheral surface. 8b is an internal thread of the nut portion 8. Reference numeral 9 denotes an insertion hole into which the upper small-diameter portion 2a of the top member 2 is movably inserted in the vertical direction (A direction), and is located on the axis Z of the plug 2. The axis Z is parallel to the vertical direction (A direction). Reference numeral 10 denotes a screw hole in which an internal screw 12 to which a handle fixing screw 11 is screwed is formed.
[0013]
On the other hand, the plug lower member 13 has a bottomed cylindrical shape. The lower plug member 13 has a cylindrical portion 14 and a small-diameter portion 15. The small diameter portion 15 is formed so as to protrude downward from the center of the bottom 14 a of the cylindrical portion 14. The small diameter portion 15 has an external thread 15a on the outer peripheral surface, and an annular packing (second elastic member) 16 larger in diameter than the first elastic member 2d is fitted into the upper surface of the outer peripheral surface, An annular packing (second elastic member) 16 is brought into close contact with the lower surface of the bottom 14a by screwing a nut member 17 from below onto the lower surface of the outer peripheral surface.
[0014]
A lower space in which the large-diameter portion 2c is located in the internal housing space S is formed inside the cylindrical portion 14, and an upper space in the internal housing space S is formed by the insertion hole 9. .
[0015]
Further, the cylindrical portion 14 has a valve seat portion 20 with which the first elastic member 2d comes into contact with or separates from the center of the bottom 14a of the cylindrical portion 14 in a state of projecting upward, and a plurality of water on its peripheral surface. It has a horizontal hole 21 for punching.
[0016]
The plug lower member 13 has a vertical hole 22 for drainage that vertically penetrates the valve seat portion 20, the bottom 14a, and the small diameter portion 15. The screw hole 10, the insertion hole 9 and the vertical hole 22 are located on the axis Z of the plug 2.
[0017]
In addition, the cylindrical portion 14 has a coil spring 25 that constantly urges the large-diameter portion 2c upward, below the large-diameter portion 2c in the internal housing space (the lower space) S. When the temperature is equal to or higher than a predetermined temperature, the large-diameter portion 2c is urged downward with an urging force larger than that of the coil spring 25 to bring the first elastic member 2d into contact with the valve seat portion 20, while tap water is supplied. When the temperature drops below a predetermined temperature, the first elastic member 2d shrinks to separate the first elastic member 2d from the valve seat portion 20, thereby passing through the lower hole from the vertical hole 22 to prevent the freezing from the horizontal hole 21. A spring 26 made of a shape memory alloy material forming a drainage flow path to a discharge flow path 37 to be described later outside the valved device 1 is attached to the large-diameter portion 2c in the internal storage space (the lower space) S. Have on the upper side.
[0018]
Next, the faucet 30 to which the valve device with freezing prevention function 1 is detachably mounted will be described.
[0019]
In FIG. 2, a faucet 30 has an inflow port 31, an outflow port (discharge port) 32, and a faucet insertion opening 33, and a faucet body (body) 35 having a valve seat 34 therein, It comprises a valve device 1 with a freezing prevention function which is detachably attached to a faucet body (body) 35 via an insertion opening 33.
[0020]
The valve seat 34 is located between a water supply flow path 36 communicating with an upstream piping flow path and a discharge flow path 37 communicating with a downstream outlet (discharge port) 32. The lateral hole 21 of the valve device 1 with the anti-freezing function communicates with the discharge flow path 37, and the annular packing (second elastic member) 16 is connected to the valve seat 34 when the faucet 30 is stopped. The valve device 1 with the anti-freezing function is mounted in the faucet main body (body) 35 through the faucet rod insertion opening 33 so as to abut the faucet.
[0021]
Further, the faucet main body (body) 35 has an inner screw 38 on the inner peripheral surface of the faucet main body (body) 35, which is screwed to the outer screw 8 a of the faucet rod upper member 5. Then, as described above, after the valve device 1 with the anti-freezing function is inserted into the faucet body (body) 35 through the plug rod insertion opening 33, the screws 8a and 38 are screwed together to prevent freezing. The valve device with function 1 is mounted on the faucet main body (body) 35.
[0022]
Reference numeral 40 denotes a handle, which is screwed to the outer thread portion 6 and is fixed to the upper end of the upper plug member 5 by a handle fixing screw 11.
[0023]
By operating the handle 40, the annular packing (second elastic member) 16 is brought into contact with the valve seat (seat portion) 34 provided inside the faucet body 35, By separating the packing (second elastic member) 16 of the above, the amount of tap water discharged from the outlet 32 can be adjusted.
[0024]
When the annular gasket (second elastic member) 16 is in a water-stop state with the annular gasket (second elastic member) 16 abutting against the valve seat (seat portion) 34, the shape memory alloy is used when the tap water cools below a predetermined temperature. A spring 26 made of a material is contracted to separate the first elastic member 2d from the valve seat portion 20, whereby the valve device with the anti-freezing function passes from the vertical hole 22 through the lower space and from the horizontal hole 21. A drain channel leading to the first external discharge channel 37 is formed. Therefore, the tap water remaining in the water supply flow path 36 is frozen by discharging the tap water remaining in the water supply flow path 36 from the outlet (discharge port) 32 through the drainage flow path. Can be automatically prevented.
[0025]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, there is an effect which can provide the valve apparatus with a freezing prevention function which can perform a freezing prevention operation automatically, and the faucet using the same.
[Brief description of the drawings]
FIG. 1 is a configuration explanatory view showing one embodiment of the present invention.
FIG. 2 is a diagram showing a use state of the embodiment.
FIG. 3 is a diagram showing a use state of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Valve apparatus with freeze prevention function, 2 ... Top-shaped member, 2c ... Large diameter part, 2d ... Packing (first elastic member), 4 ... Plug rod, 5 ... Plug rod upper member, 13 ... Plug rod lower member , 14a: bottom, 15: small diameter portion, 16: annular packing (second elastic member), 20: valve seat portion, 21: horizontal hole, 22: vertical hole, 25: coil spring, 26: from shape memory alloy material Spring 30, faucet, 31 ... inlet, 32 ... outlet, 33 ... opening for plug insertion, 34 ... valve seat, 35 ... faucet body (body), S ... internal accommodation space.

Claims (2)

A top type member having a small diameter part vertically, a large diameter part between the upper small diameter part and the lower small diameter part, and a first elastic member fitted into the lower small diameter part from below, A stopper rod having an internal accommodation space in which the top member is vertically movably accommodated,
The stopper rod comprises a stopper rod upper member and a stopper rod lower member detachably attached to the stopper rod upper member and forming the internal storage space with the stopper rod upper member,
The plug lower member has a bottomed cylindrical shape and has a small-diameter portion fixed in a state in which the annular second elastic member is fitted in a state protruding downward from the center of the bottom, and has a center at the center of the bottom. The first elastic member has a valve seat portion that comes into contact with and separates from the first elastic member in a state where the first elastic member protrudes upward, and has a lateral hole for drainage on a peripheral surface thereof,
The plug lower member has a vertical hole for drainage that vertically penetrates the valve seat portion, the bottom and the small diameter portion, and
The plug lower member has a coil spring that constantly urges the large-diameter portion upwardly below the large-diameter portion in the internal housing space, and has a biasing force greater than the coil spring when the temperature is equal to or higher than a predetermined temperature. While the large-diameter portion is urged downward to cause the first elastic member to abut against the valve seat portion, when the temperature is equal to or lower than a predetermined temperature, the first elastic member is contracted and the first elastic member is compressed by the urging force of the coil spring. A spring made of a shape memory alloy material forming a drain passage from the vertical hole to the outside through the internal housing space to the outside from the vertical hole, thereby separating the spring from the valve seat portion in the internal housing space. A valve device having an antifreezing function, which is provided above the large diameter portion. 2. The valve with a freezing prevention function according to claim 1, wherein the water supply flow passage, the discharge flow passage, a valve seat located between the two flow passages, and a faucet main body having a plug insertion opening are provided through the plug insertion opening. A faucet using a valve device with an antifreezing function, wherein the device is detachably mounted.

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