JPS5845543B2 - 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, several types of anti-freeze valves have been used in water heaters, etc. to prevent pipes from bursting due to freezing of water, but these conventional valves are Considering the accuracy, ease of use, etc. of both,
There is still nothing that can be said to be sufficient (and countermeasures were desired).

Further, the antifreeze valve operates near the freezing temperature of water, and is closed most of the year.

Therefore, in the case of conventional anti-freeze valves, sedimentation of impurities in the water causes clogging in the thin tubes, and water does not drain even though the valve is opened near freezing temperatures, causing the anti-freeze valve to no longer function as an anti-freeze valve. The drawback was that it did not work at all.

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. a sealed chamber unit that forms a sealed chamber by being fixed to the peripheral portion of a dish-shaped outer frame, and a sealed chamber unit that seals a temperature-sensitive substance that causes a volume change at a temperature of about 0 to 5° C.; The outer frame housing is provided with an operation mechanism that engages with the valve body and operates the valve body from the outside regardless of the outside temperature.

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

In addition, by moving the valve body from the outside at any time, sediment that causes clogging can flow out, preventing the loss of function of the antifreeze valve due to clogging, and preventing water from actually flowing out. You can check to see if there is a clog by looking at it.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In the figure, 1 is an outer frame body, and this outer frame body 1
is provided with an inlet 1a and an outlet 1b for water communicating through a water channel formed inside the outer frame body 1, and a ring 2 is attached to the cylindrical portion having the inlet 1a to connect the outer frame to the outer frame body 1. A metal fitting 3 is provided for attaching the device to the main body 1 so that it cannot be removed.

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, etc.

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.

Further, this sealed chamber unit is attached to the outer frame body 1 so that the elastic diaphragm 7 faces the opening of the nozzle 4 of the adjustment screw 4.

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, and an annular collar 9a is provided in the middle part.

The rubber valve 10 also includes a head 10a that presses onto and separates from the nozzle 4a of the adjusting screw 4 to regulate drainage;
It is a cap-shaped thing consisting of an annular peripheral part 10b integrally formed at the end of 0a.

11 is an umbrella-shaped rubber plate into which the head 10a of the rubber valve 100 is inserted;
and the inner surface of the outer frame body 1 on which the adjustment screw 4 is disposed, and the peripheral edge of the rubber plate 110 is in elastic contact with the inner surface of the outer frame body 1.

Reference numeral 12 denotes an operating body for operating the rubber valve 10 from the outside. In addition, the rotating shaft 12b rotatably held in the outer frame body 1, and the outer frame body 1 of the rotating shaft 12b.
A cam body 12c is fixed to the other end of the connecting rod 9 and engages with the collar 9a of the connecting rod 9.
By operating a, the cam body 12c engages with the connecting rod 9, and the rubber valve 10 can be moved regardless of the outside temperature.

Note that 12d is a press-fit pin that connects the rotating shaft 12b and the cam body 12c, and 12e is a return spring for returning the operating lever 12a.

Reference numeral 13 denotes a metal plate made of a metal with good thermal conductivity, 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, the adjustment screw 4 and the rubber valve 100 head 10
When the rubber valve 10 is placed in proper contact with the nozzle 4a, the elastic diaphragm 7 bends at room temperature, and the rubber valve 10 is pressed against the opening of the nozzle 4a via the connecting rod 9. ) is stopped by a nozzle 4a.

As the outside temperature decreases, the volume of the temperature-sensitive substance 80 such as Freon gradually changes (reduces), and at a temperature of 5° C. or lower, the volume of the temperature-sensitive substance 80 changes (reduces) rapidly, causing the elastic diaphragm 7 to The pressing pressure changes (decreases) rapidly.

As a result, the connecting rod 9 moves in the direction of the outer frame 6, creating a gap between the adjusting screw 4 and the rubber valve 100, causing water in the water heater or pipes to flow out due to water pressure, preventing accidents such as bursting due to freezing of water. You can prevent it from happening.

By the way, in the antifreeze valve of this embodiment, by rotating the operating lever 12a in the direction of arrow A in FIG. When engaged, the connecting rod 9 moves, thereby creating a gap between the nozzle 4a of the adjusting screw 4 and the rubber valve 10, resulting in an open state.

At this time, if the nozzle 4a is clogged with hardened sediment, water will not flow out from the outlet 1b.
If there is no precipitate or the like, or if the precipitate has not hardened and is pushed out by water pressure, the umbrella-shaped rubber plate 11
is pushed, the water in the inlet 1a flows out in the direction of arrow B in FIG. 3, and is drained from the outlet 1b.

That is, in the anti-freeze valve of this embodiment, it is possible to easily check in advance whether the nozzle 4a is clogged before the outside air temperature reaches the point at which the water freezes.

Furthermore, if the operating lever 12a is periodically moved to open the valve, foreign matter will not settle in the nozzle 4a and cause clogging.

Further, since it is only necessary to operate the control lever 12a while the device is attached to the device, it is possible to easily check for clogging.

Furthermore, it is easy to implement because it is only necessary to add an operating mechanism consisting of an operating lever, a rotating shaft, and a cam body to the conventional tank bottom.

As described above, according to the anti-freeze valve of the present invention, it is possible to prevent clogging caused by sediment and loss of the function as an anti-freeze valve due to this clogging, and also to check whether it is functioning normally. It can be done easily.

[Brief explanation of the drawing]

Figures 1a and b are front and side views showing the external appearance of an antifreeze valve according to an embodiment of the present invention, Figure 2 is a sectional view showing the internal structure of the antifreeze valve, and Figure 3 is a sectional view showing the internal structure of the antifreeze valve. FIG. 3 is an enlarged cross-sectional view of the main part of the prevention valve. 1...Outer frame body, 1a...Inflow port, 1b...Outlet port, 4...Adjustment screw,
4a...nozzle, 6...outer frame, 7...
...Elastic diaphragm, 8...Temperature-sensitive substance, 9...
...Connection rod (connection member), 10...Rubber valve (
valve body), 12... operating body, 12a...
Operation lever 12b...Cam body.

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 arranged to face the opening of the nozzle, and a peripheral part of the elastic diaphragm fixed to a peripheral part of a dish-shaped outer frame. a sealed chamber unit configured by sealing a temperature-sensitive substance that causes a volume change at a temperature of about 0 to 5 degrees Celsius to form a sealed chamber; An antifreeze valve characterized in that an operating mechanism for operating the valve body from the outside is provided in the outer frame casing.