JPS586936Y2 - antifreeze device - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a freezing prevention device for water piping introduced from outdoors to indoors, and in particular, the invention relates to a freezing prevention device for water pipes introduced indoors from the outdoors, and in particular, the invention relates to a freezing prevention device for water pipes introduced indoors from outdoors. The present invention relates to an anti-freezing device that operates in a hot water supply device for supplying hot water when the water reaches a temperature close to freezing, causing the water in the piping to flow out and preventing freezing by causing the water in the piping to flow.

Conventional configuration and its problems In hot water equipment, the pipes, heat exchangers, and the water supply part of the equipment freeze during severe cold, and part of the water flowing part bursts due to volumetric expansion during freezing. It is well known that water leaks can cause malfunctions.

It is also well known that in order to prevent this, the tap is slightly opened to allow water to flow to prevent freezing in advance.

One way to automatically prevent this is to use the movement of a diaphragm or velofram, which seals a substance that suddenly changes volume near freezing temperatures, to open a valve just before it freezes, allowing the water to flow out and protect the equipment. Methods are in place to prevent freezing and bursting of water-conducting parts.

Previously, such runoff water was disposed of in drains and was of no use.

Furthermore, if the amount of water flowing per unit time was reduced, there was a risk that the water would freeze even though it was flowing out.

Purpose of the invention This invention effectively utilizes the water flowing out from the anti-freezer by supplying it to the bathtub, and also moves the temperature-sensing part of the anti-freezer outside and the water valve indoors. By installing the water valves near the hot water faucet, etc., it is possible to prevent pipes not only outdoors but also indoors from freezing, and to reduce the amount of water flowing out per unit time.

Structure of the Device To achieve this objective, the present invention includes a pipe that supplies hot water or water from outdoors to indoors, and an anti-freeze device that operates to drain water in the pipe to the outside when the water reaches a temperature close to freezing. The antifreeze device has a structure in which the temperature sensing part and the horizontal part are separated, and the temperature sensing part is installed outdoors and the water valve part is installed indoors.

With this configuration, the water valve operates depending on the outside temperature, but the outflow water can be used indoors.

Description of examples An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is the wall of the house, 2 is indoors, and 3 is outdoors.

4 is a hot water boiler installed outdoors, which has a built-in burner that uses gas from the gas supply pipe 5 as fuel, and a heat exchanger through which water from the water supply pipe 6' passes. is wall 1
Hot water is supplied from a mixing faucet 7 installed indoors through a hot water pipe 6 buried in the water.

The mixing faucet 7 can supply hot water from the hot water supply pipe 6 and water from the water pipe 8 in an arbitrary mixing ratio, or can supply water individually.

9 is a bathtub installed indoors.

Reference numeral 10 denotes an antifreeze device installed in the middle of the hot water supply pipe 6, which is composed of a water valve section 12 provided on a branch pipe 11 branched from the hot water supply pipe 6, and a temperature sensing section 13 for controlling the opening and closing of the water valve section 12. The temperature sensing part 13 is installed outdoors, the water valve part 12 is installed indoors, and the water that flows out when the water valve part 12 is opened is discharged from the outflow pipe 14 to the bathtub 9.

The temperature sensing part 13 controls the opening and closing of the water valve part 12 by the movement of a diaphragm or bellows that seals a substance whose volume changes suddenly near the freezing temperature of water. The water valve part 12 is connected through a tube 16 that passes through it, and is housed in a breathable cover 17 and installed on a wall surface.

In the above configuration, when the outside air temperature approaches the freezing temperature of water, the water valve section 12 opens by the action of the temperature sensing section 13.

Therefore, water flows from water supply pipe 6' to heat exchanger to hot water supply pipe 6 to branch pipe 1.
1→water valve part 12→outflow pipe 14 and flows into the bathtub 9.

Therefore, there is no risk that the water in these pipes will freeze.

The amount of water flowing out to prevent freezing varies depending on the outside temperature, water temperature, wind speed, duration of low temperature, etc., but in the case of the present invention, it is at least 200 cc per minute when the outside temperature is -20°C.
is necessary.

However, if the entire anti-freeze device is located outdoors and the water is discharged outdoors, as in the past, there is a risk that the outflow water will freeze at the outlet of the anti-freeze device and block the outlet, so 50% more than this is required. .

Effects of the Invention As described above, according to the present invention, when the temperature is close to freezing, the outflow water that flows out from the antifreeze device is allowed to flow into a water storage tank such as a bathtub, so that the outflow water can be used effectively.

Furthermore, by installing the temperature sensing part of the antifreeze device outdoors and the water valve part indoors, it is possible to prevent not only outdoor piping but also indoor piping from freezing.

Furthermore, since the water valve is located indoors, the temperature of the water valve is relatively high compared to when the water valve is installed outdoors.
Even if the amount of water flowing out from the water valve is small, there is little risk of freezing, and as a result, the amount of water flowing out per unit time can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a piping diagram when an antifreeze device according to an embodiment of the present invention is applied to a hot water supply device, and FIG. 2 is a side sectional view of the antifreeze device. 1... Wall of house, 2... Indoor, 3...
...Outdoor, 4...Hot water boiler, 6...
...Hot water pipe, 7...Mixing faucet (faucet), 9.
... Bathtub (water tank), 10 ... Anti-freeze device, 11 ... Branch pipe, 12 ... Water valve section,
13... Temperature sensing part, 14... Outflow pipe.

Claims (1)

[Scope of utility model registration request] A pipe that supplies hot water or water to a predetermined place indoors through a conduit introduced indoors from the outdoors, a temperature sensing part installed in the pipe and detecting the outside temperature, and a temperature sensor inside the pipe that is opened and closed by the temperature sensing part. an anti-freeze device having a water valve portion for causing water to flow out to the outside; the anti-freeze device is configured to open and close the water valve portion using the temperature sensing portion when the outside air temperature becomes close to the freezing temperature of the water; An anti-freeze device having a structure in which a temperature-sensing part of the anti-freeze device is installed outdoors, a water valve part of the anti-freeze device is installed indoors, and water flowing from the water valve part is stored in a water tank such as a bathtub.