JPS60587B2 - antifreeze valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION In cold regions and in winter, the present invention automatically discharges water in water supply devices such as hot water heaters and pipes when the water is at freezing temperature, thereby preventing accidents such as pipe bursts. This relates to an antifreeze valve that prevents freezing.

Conventionally, various types of antifreeze valves have been used in boilers, etc. to prevent pipes from bursting due to freezing of water. Abnormal temperatures occur when the valve is activated or deactivated, and this has become a serious problem, and a countermeasure has been desperately needed.

The present invention provides an anti-freeze valve that solves these conventional problems, and the anti-freeze valve according to the present invention will be described below with reference to the drawings.

The figure shows an antifreeze valve according to an embodiment of the present invention.
In the figure, ``1 is an outer frame lotus body, and this outer frame lotus body 1 is provided with an inlet row a and a water discharge row b.
A device mounting bracket 3 that is held in a manner that prevents it from coming off is provided. Reference numeral 4 denotes an adjustment screw having a nozzle 4a for regulating the amount of water flowing inside the outer frame cliff body 1, which is screwed into the wall between the inflow row a and the discharge port lb of the outer frame link body 1,
A and the discharge row B are discharged through the nozzle 4a.

A seal ring 5 seals the outer frame pupil 1 and the adjustment screw 4.

6 is a dish-shaped outer frame, and 7 is a metal diaphragm, which is closely fixed around the outer frame 6 to form a sealed chamber.

This sealed chamber is sealed with a temperature-sensitive substance 8 such as Freon, which is conditioned to undergo a rapid volume change at a temperature of about 0 to 7° C., thereby forming a sealed chamber unit. In addition, this closed room unit has a metal diaphragm 7.
is attached to the outer frame sparrow body 1 with a fixing fitting 9 so as to face the nozzle 4a opening of the adjustment screw 4. 10 is a connecting rod with one end fixed to the center of the metal diaphragm 7;
The nozzle 4 of the adjustment screw 4 is attached to the end of the connecting rod 10.
A rubber valve 11 that opens and closes the opening is attached.

This rubber valve 11 is in the shape of a cap having a head 11a for press-fitting and separating the adjustment screw 4 from the nozzle 4a and regulating drainage. This is a holding plate disposed to surround the peripheral edge 11b of the rubber valve 11.

Reference numeral 13 denotes a cushioning material that holds the connecting rod 101 and is disposed on the metal diaphragm 7. In the above configuration, if the adjustment screw 4 and the head 11a of the rubber valve 11 are installed in a state where they are in light contact so that a constant pressure is applied, the rubber The head 11a of the valve 11 is pressed to close the nozzle 4a, and the water inflow row a
The water is sealed by a nozzle 4a. As the outside temperature drops, the sagging of the metal diaphragm 7 changes, and when the temperature approaches the point at which water freezes, a gap is created between the nozzle 4a and the head 11a of the rubber valve 11, and water pressure causes the water to cool. It is possible to prevent accidents such as bursting due to freezing of water flowing out of the pipe or water inside the pipe.By the way, in the anti-freeze valve according to the present invention, the retaining plate 12 that presses the circumference 11b of the rubber valve 11 and the A cushioning material 13 is provided which is fixed to the connecting twill 1 and placed on the metal diaphragm 7, but when the retaining plate 12 and the cushioning material 13 are not present, the outside temperature drops and the nozzle 4
When water travels out from a, the water flows to the head 1 of the rubber valve 11.
When passing through a, the head 11a of the rubber valve 11 becomes a negative pressure, and the rubber valve 11 is sucked into the nozzle 4a, and at the same time, the connecting rod 10 and the metal cornice 7 are sucked.

When the water is sucked to a certain extent, the force of water pressure becomes larger than the negative pressure of the head 11a of the rubber valve 11, so the head 1 of the rubber valve 11
At the same time that 1a is pushed, the connecting rod 10 and the metal diaphragm 7 are also pushed. If the above is repeated, the metal diaphragm 7 will vibrate up and down, and the nozzle 4a will be rapidly opened and closed at the same time as the sound is generated, resulting in a phenomenon in which the piping itself will vibrate due to the water sagging effect.

Further, when the center of the head 11a of the rubber valve turtle 1 and the nozzle 4a are not aligned, a biased negative pressure acts on the head 11a of the rubber valve 11, causing lateral vibration. Then, this lateral vibration is transmitted to the metal diaphragm 7 via the connecting rod 10, generating sound. Therefore, the holding plate 12 of the present invention is arranged around the rubber valve 11 as described above, and the cushioning material 13 is installed around the connecting rod 101, and the metal diaphragm 7
If it is installed in such a way that it is in contact with the connecting rod 10 and does not interfere with the operation of the closed room unit and that a force is applied to overcome the negative pressure acting on the head 11a of the rubber valve 11, the longitudinal vibration of the rubber valve 11 can be prevented by installing the vertical vibration of the rubber valve 11 in the connecting rod 10. The cushion material 13 absorbs the lateral vibration, and the lateral vibration is absorbed by friction or contact with the retaining plate 12 installed on the peripheral green portion 11b of the rubber valve 11, thereby preventing the generation of sound.

As described above, according to the antifreeze valve of the present invention, by adding some parts, it is possible to obtain a great effect of being relieved from the abnormal temperature during operation of the antifreeze valve, which has been a problem in the past.

Furthermore, this structure does not generate any abnormal noise even at a water pressure as high as 20k9/cm, so it can be widely applied to pressure sensors and temperature sensors using metal diaphragms.

[Brief explanation of the drawing]

The figure is a sectional view showing the structure of an antifreeze valve according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Outer frame cliff body, la... Inlet, lb... Outlet, 4... Adjustment screw, 4a... Nozzle, 6... Outer frame, 7... Metal diaphragm, 8 ...Temperature sensitive substance, 11...Rubber valve, 13...Cushion material.

Claims (1)

[Claims] 1. An outer frame housing having a water inlet and an outlet, a nozzle provided in a waterway between the inlet and the outlet disposed inside the outer frame housing, and opening and closing of this nozzle. A hermetic seal consisting of a valve body, a metal diaphragm connected to the valve body, and an outer frame to which it is attached, and a temperature-sensitive substance that causes a rapid volume change at a temperature of about 0 to 7 degrees Celsius is sealed inside the sealed chamber. An anti-freeze valve comprising: a chamber unit, and a cushion material that holds the periphery of the valve body and presses the metal diaphragm is installed between the valve body and the metal diaphragm.