JPS5845545B2 - antifreeze valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anti-freeze valve that automatically discharges water in water heaters and pipes when the water is at freezing temperature in cold regions to prevent accidents such as bursting. It is.

Conventionally, in water heaters and the like, several types of antifreeze valves have been used to prevent pipes from bursting due to freezing of water.

By the way, this anti-freeze valve opens near the freezing temperature of water and prevents rupture accidents due to freezing by causing the water in the pipe to flow and drain, but in reality it is closed most of the year. state.

Therefore, in conventional antifreeze valves, impurities in the water precipitate and harden, blocking the water flow path, and even though the outside air temperature is close to the freezing temperature and the valve is open, The problem was that water could not be drained and freezing accidents could occur.

It is an object of the present invention to solve these conventional problems and provide an antifreeze valve that operates reliably.

In order to achieve this object, the present invention provides an outer frame housing having a water inlet and a water outlet and a water channel between the inlet and the water outlet, and an outer frame housing provided within the outer frame housing. A valve body for opening and closing an opening of a nozzle provided in the water channel, an elastic diaphragm connected to the valve body via a connecting member and arranged to face the opening of the nozzle, and a peripheral portion of the elastic diaphragm. is fixed to the periphery of a dish-shaped outer frame to form a sealed chamber, and a temperature-sensitive substance that causes a volume change at a temperature of about 0 to 5 degrees Celsius is sealed in the sealed chamber. , an opening having a stepped portion around the periphery is provided at a position facing the nozzle of the outer frame housing, and the sealed chamber unit is arranged with the peripheral portion abutting the stepped portion so as to close the opening; , the sealed room unit is pressed against the stepped portion by a suppressing member movably attached to the outer frame housing.

With this configuration, when the outside temperature reaches around 0 to 5 degrees Celsius, the valve body is automatically moved to open the valve, draining the water in the pipes and preventing accidents such as bursting due to freezing. can.

In addition, by moving the valve body from the outside at any time,
By flushing out the sediment that causes clogging, it is possible to prevent the antifreeze valve from losing its function due to clogging, and to check whether or not clogging has occurred by checking whether water actually flows out. It can be performed.

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, 1 is an outer frame body, and this outer frame body 1
has a water inlet 1 that communicates with it through a waterway formed inside.
A and a discharge port 1b are provided, and a device mounting fitting 3 is disposed on the cylindrical portion having the inlet port 1a and held in the outer frame main body 1 by a ring 2 to prevent removal.

Reference numeral 4 denotes an adjustment screw having a nozzle 4a for regulating the amount of water flowing inside the outer frame body 1, which is screwed into the wall surface between the inlet 1a and the outlet 1b of the outer frame body 1, Thereby, the nozzle 4a is arranged in the waterway so as to form a part of the waterway.

5 is a seal ring, which connects the outer frame body 1 and the adjustment screw 4;
It is used for sealing.

Reference numeral 6 denotes a dish-shaped outer frame, which together with the outer frame case body 1 constitutes an outer frame case.

Reference numeral 7 denotes an elastic diaphragm, and the periphery of the elastic diaphragm 70 is fixed to the outer frame 6 by winding the periphery of the open end of the outer frame 6, soldering with ring-shaped solder, or the like.

A sealed chamber is formed by the outer frame 6 and the elastic diaphragm 7, and a temperature-sensitive substance 8 such as freon, which undergoes a rapid volume change at a temperature of about 0 to 5 degrees Celsius, is sealed in this sealed chamber. A closed room unit is constructed.

In this sealed room unit, the outer frame body 1 is arranged such that the elastic diaphragm 7 faces the opening of the nozzle 4a of the adjustment screw 4.
installed on.

Reference numeral 9 denotes a connecting rod (connecting member) with one end fixed to approximately the center of the elastic diaphragm 7, and the other end of this connecting rod 9 has a rubber valve (valve body) for opening and closing the opening of the nozzle 4a of the adjusting screw 4. 10
is fitted.

This rubber valve 10 includes a head 10a that presses the adjustment screw 4 into and out of the nozzle 4a and regulates drainage, and an annular peripheral edge 10b integrally formed at the end of the head 10a.
It is a hat-shaped thing consisting of.

Reference numeral 11 denotes a skirt-shaped rubber plate into which the head 10a of the Konocom valve 100 is inserted, and this rubber plate 11 connects the peripheral edge 10b of the rubber valve 100 and the inner surface of the outer frame body 1 in which the adjustment screw 4 is disposed. The peripheral edge of the rubber plate 110 is in close contact with the inner surface of the outer frame body 1.

This rubber plate 11 is used to eliminate abnormal noises that occur during drainage.

Reference numeral 12 denotes a ring (pressing member) screwed into the opening of the space 1c where the water channel having the inlet port 1a and the water channel having the outlet port 1b intersect in the outer frame body 1; A stepped portion 1d provided around the opening of the outer frame body 1
By pressing the sealed room unit, the peripheral edge of the outer frame 60 of the sealed room unit is held between the stepped portion 1d, and by loosening this ring 12, the sealed room unit can be moved.

That is, by moving this sealed chamber unit, the rubber valve 10 can be opened regardless of the outside temperature. It serves as a check ring to prevent precipitation.

Reference numeral 13 denotes a metal plate made of a highly conductive metal such as aluminum, which also serves as a name plate. This metal plate 13 is in contact with the outer frame 6 and is used to efficiently transmit outside air temperature.

In the above configuration, at room temperature, the nozzle 4 of the adjusting screw 4
A rubber valve 10 is in close contact with the opening of a and is in a closed state, and water in the pipe is stopped within the outer frame housing (inlet 1a).

When the outside air temperature drops to near the freezing temperature of 5°C or less, the volume of the temperature-sensitive substance 80 in the closed room unit contracts, the rubber valve 10 moves away from the opening of the nozzle of the adjustment screw 4, and the water in the pipes drains away. It passes through the nozzle 4a, passes through the rubber plate 11, and is discharged from the discharge port 1b.

In the anti-freeze valve of this embodiment, the sealed chamber unit is mounted so that it can be moved by the ring 12, so if the ring 12 is rotated and the sealed chamber unit is moved, the rubber valve 10 can be moved regardless of the outside temperature. At this time, if the sediment in the water hardens and blocks the flow channel, the water will not be drained, so you can know the situation in advance, and if there is no sediment, the water will be drained. You can know that the function is normal.

Furthermore, if there is a small amount of precipitate, the precipitate will be washed away together with the water by the water pressure, so that freezing accidents due to the accumulation of precipitates can be prevented.

Furthermore, with the antifreeze valve of this embodiment, the sealed chamber unit can be installed in the outer frame 1 by simply rotating and tightening the ring 12 (assembly is extremely simple, and repair in the event of a breakdown is possible. It also becomes easier to do.

Since the anti-freeze valve of the present invention is configured as described above, it is possible to easily check the clogging condition of the flow channel while it is attached to a device, thereby preventing freezing accidents due to clogging. Moreover, it is an extremely excellent product that has the advantage of being easy to assemble and easy to perform maintenance and inspection.

[Brief explanation of drawings]

1A and 1B are a front view and a side view showing the external appearance of an antifreeze valve according to an embodiment of the present invention, and FIG. 2 is a sectional view showing the internal structure of the antifreeze valve. 1...Outer frame body, 1a...Inflow port, 1b...Outlet port, 1d...Step part, 4
...Adjustment screw, 4a...Nozzle, 6.
...Outer frame, 7...Elastic diaphragm, 8...
...Thermosensitive substance, 9...Connection rod (connection member), 1
0...Rubber valve (valve body), 12...Ring (pressing member).

Claims (1)

[Claims] 1. An outer frame housing that is equipped with an inlet and an outlet for water and a waterway between the inlet and the outlet, and a nozzle that is disposed within the outer frame and is configured to open and close the opening of the nozzle provided in the waterway. an elastic diaphragm connected to the valve body via a connecting member and disposed to slide relative to the opening of the nozzle, and a peripheral portion of the elastic diaphragm attached to a peripheral portion of a dish-shaped outer frame. a sealed chamber unit configured by fixing to form a sealed chamber and enclosing a temperature-sensitive substance that causes a volume change at a temperature of about 0 to 5 degrees Celsius in the sealed chamber; an opening having a step around the periphery is provided at a position facing the opening, and the closed room unit is placed with the periphery in contact with the step so as to close the opening, and the unit is moved to the outer frame housing. The antifreeze valve has the sealed chamber unit pressed against the stepped portion by a pressing member that is removably attached.