KR102223752B1 - System for preventing frozen of indoor fire hydrant - Google Patents

Abstract

An indoor fire hydrant freezing prevention system is disclosed.
According to an embodiment of the present invention, a water supply pipe provided in the building to supply tap water to the indoor fire hydrant of the building; A freezing prevention unit installed between the indoor fire hydrant and the water supply pipe and supplying tap water flowing from the water supply pipe to the indoor fire hydrant; And a drain pipe provided inside the water supply pipe, one end connected to the freezing prevention unit, and the other end disposed in a freeze protection zone where water does not freeze, and when the temperature of the tap water falls below the freezing temperature, the freezing prevention unit A system for preventing freezing of an indoor fire hydrant may be provided from which the tap water is discharged to the freeze safety zone through the drain pipe.

Description

Indoor fire hydrant freezing prevention system {SYSTEM FOR PREVENTING FROZEN OF INDOOR FIRE HYDRANT}

The present invention relates to a system for preventing freezing of an indoor fire hydrant, and more particularly, to prevent freezing of an indoor fire hydrant in winter, a drain pipe of a freeze preventer is placed inside the water supply pipe of an indoor fire hydrant, and the end of the drain pipe is withdrawn from a place where there is no risk of freezing It relates to a system for preventing freezing of indoor fire hydrants configured to be.

In general, when tap water contained in a water pipe freezes due to a low temperature in winter, a crack occurs in a water pipe due to an increase in volume, and various devices and methods have been proposed to prevent the freezing of the water pipe.

The easiest way to prevent freezing of water pipes is to wrap the water pipes exposed to the outside with insulation such as styrofoam.Because this method does not have a separate heating device, the tap water also freezes when the temperature is very low. The problem is not fundamentally resolved.

Another method for preventing the water pipe from freezing is to prevent the water pipe from freezing and breaking by artificially opening the water valve when the tap water contained in the water pipe is expected to freeze due to the low temperature so that the tap water is continuously drained. However, this method is not only very inconvenient because it is necessary to manually operate the water valve in anticipation of a freezing wave, and it is not possible to accurately know the expected time of freezing, thereby wasting unnecessary water, or a problem in that the water pipe is broken due to the failure to open the water valve in time. There is this.

In order to solve this problem, a method of automatically controlling the flow of tap water so that tap water is automatically drained immediately before freezing by using a freeze preventer that contracts or expands according to temperature has been proposed.

In the above-described method, tap water is discharged through a separate drain pipe according to the operating state of the freeze protector, preventing freezing of tap water.If the outside temperature is below the freezing temperature of the tap water, the internal temperature of the drain pipe exposed to the outside is also below the freezing temperature. Because of this, the water inside the drain pipe may freeze.

Therefore, not only the drain pipe freezes, but also the flow of water is blocked due to the freezing of the drain pipe, so that the automatic drainage function of the freeze protector does not operate normally, and other pipes may also freeze.

On the other hand, the building is equipped with an indoor fire hydrant for rapid fire extinguishing, and this indoor fire hydrant is also vulnerable to freezing in winter, so if the indoor fire hydrant is frozen, there is a problem in that it is not possible to respond quickly in case of a fire.

Therefore, conventionally, in order to prevent the water supply pipe of an indoor fire hydrant from freezing, a method of preventing freezing or breaking by installing a heating wire in the water supply pipe or using an insulating material to keep the water supply pipe warm has been used.

However, the conventional method of preventing freezing of indoor fire hydrants as described above has a high operating cost of the heating wire for preventing freezing in winter, and high maintenance costs, such as having to re-replace the heating wire when the life of the heating wire expires or breaks down. There is a problem that arises.

Korean Patent Publication No. 10-2012-117204 (published on October 24, 2012)

An embodiment of the present invention is an indoor fire hydrant that prevents freezing of the drain pipe by using the latent heat of tap water flowing through the water supply pipe by installing a freeze protector before the indoor fire hydrant to prevent freezing of the indoor fire hydrant and placing the drain pipe of the freezing preventer inside the water supply pipe. To provide a freeze protection system of

According to an embodiment of the present invention, a water supply pipe provided in the building to supply tap water to the indoor fire hydrant of the building; A freezing prevention unit installed between the indoor fire hydrant and the water supply pipe and supplying tap water flowing from the water supply pipe to the indoor fire hydrant; And a drain pipe provided inside the water supply pipe, one end connected to the freezing prevention unit, and the other end disposed in a freeze protection zone in which water does not freeze, and when the temperature of the tap water falls below the freezing temperature, the freezing prevention unit A system for preventing freezing of an indoor fire hydrant for discharging the tap water to the freeze safety zone through the drain pipe may be provided.

In addition, a plurality of the indoor fire hydrants are provided, a plurality of the indoor fire hydrants are each connected to the water supply pipe, and the freezing prevention unit may be installed on an indoor fire hydrant disposed at the top of the building among the plurality of indoor fire hydrants.

In addition, the other end of the drain pipe extends to a discharge part of the water supply pipe located in the freeze safety zone, and a drain coupling and a drain hose for discharging the discharged water from the water supply pipe to the outside of the water supply pipe may be provided at the discharge part.

In addition, the freezing prevention unit, one end is connected to the water supply pipe, the other end is connected to the indoor fire hydrant, a housing formed with a receiving space therein; A fixture installed on the inner circumferential surface of the housing to divide the housing into two spaces; A freezing preventer that is accommodated in a space close to the indoor fire hydrant among the spaces of the housing divided by the fixture and flows the tap water to one side and discharges the tap water to the other side when the temperature of the tap water falls below the freezing temperature; And is accommodated in a space close to the water supply pipe among the spaces of the housing divided by the fixture, one end penetrates the fixture and is connected to the other side of the freeze preventer to introduce the discharged water, and the other end is connected to the drain pipe. It may include a fitting part supplying the discharged water to the drain pipe.

In addition, the fixture may include an outer rim formed in a circular ring shape so as to be in close contact with the inner circumferential surface of the housing; An inner rim formed in the outer rim to have a diameter smaller than that of the outer rim, and through which one end of the fitting portion passes; The outer rim and the inner rim are connected to each other, and a plurality of ribs are provided to be spaced apart along a circumferential direction, and an opening through which the tap water provided from the water supply pipe passes may be formed between the plurality of ribs.

In addition, a sliding hole having a larger diameter than one end of the fitting part may be formed in the inner rim so that one end of the fitting part can be rotated relative to the inside.

According to an embodiment of the present invention, to prevent freezing of the indoor fire hydrant, a freeze protector is installed before the indoor fire hydrant, and the drain pipe of the freeze preventer is placed inside the water supply pipe to prevent the drain pipe from freezing by using the latent heat of tap water flowing through the water supply pipe. There is an advantage to that.

1 is a block diagram schematically showing a system for preventing freezing of an indoor fire hydrant according to an embodiment of the present invention.
FIG. 2 is an enlarged view showing the exploded portion "A" of FIG. 1.
FIG. 3 is an enlarged view showing an enlarged bonding state of a portion "B" of FIG. 1.
4 is an exploded perspective view showing the configuration of a freezing prevention unit used in the freezing prevention system of an indoor fire hydrant according to an embodiment of the present invention.
FIG. 5 is a partially combined perspective view showing a combined state of a fixture, a freeze preventer, and a fitting part in FIG. 4.

Hereinafter, a configuration and operation according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The following description is one of the many aspects of the invention that are claimable, and the following description may form part of the detailed description of the invention.

However, in describing the present invention, detailed descriptions of known configurations or functions may be omitted to clarify the present invention.

Since the present invention can make various changes and include various embodiments, specific embodiments will be illustrated in the drawings and described in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention.

Terms including ordinal numbers such as first and second may be used to describe various elements, but the corresponding elements are not limited by these terms. These terms are only used for the purpose of distinguishing one component from another.

When an element is referred to as being'connected' or'connected' to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram schematically showing a system for preventing freezing of an indoor fire hydrant according to an embodiment of the present invention, and FIG. 2 is an enlarged view showing an exploded portion "A" of FIG. 1, and FIG. 3 is It is an enlarged view showing an enlarged view of the bonding state of the "B" part of 1;

Referring to FIGS. 1 to 3, an indoor fire hydrant freezing prevention system 1 according to an embodiment of the present invention may include a water supply pipe 100, a freezing prevention unit 200, and a drain pipe 300.

First, referring to FIG. 1, the water supply pipe 100 is a configuration provided to supply tap water to an indoor fire hydrant 20 provided in a building (for example, a multi-family house such as an apartment). In order not to freeze, the water supply pipe 100 may enter the interior of the building 10 through a freeze-break safety zone (for example, the basement 11 of the building 10) where water does not freeze due to a relatively high temperature in the building 10.

Here, when the building 10 has a multi-story structure in which households are divided by floor, the water supply pipe 100 may extend upward by a required length from the basement 11 of the building 10. In addition, the indoor fire hydrant 20 may be provided at least one per floor in the multi-layered building 10, and a plurality of indoor fire hydrants 20 may be provided.

Accordingly, as shown in FIG. 1, a plurality of indoor fire hydrants 20 may be respectively connected to the water supply pipe 100 extending in the height direction to the building 10. Accordingly, the indoor fire hydrant 20 may be branched from the water supply pipe 100 to individually receive tap water from the water supply pipe 100.

Here, the building 10 is not necessarily limited to a house, and may be defined as a concept including another building (eg, a factory) requiring installation of the indoor fire hydrant 20 and supply of tap water.

Meanwhile, the freezing prevention unit 200 is a configuration installed between the indoor fire hydrant 20 and the water supply pipe 100, and tap water of the water supply pipe 100 may flow into one side of the freezing prevention unit 200. The freezing prevention unit 200 may supply tap water introduced to one side thereof to the indoor fire hydrant 20 so that tap water is ejected when the indoor fire hydrant 20 is opened in case of a fire.

In addition, when the temperature of the tap water introduced to one side thereof falls below a temperature at which water can be frozen (hereinafter referred to as'freezing temperature'), the tap water is inside the water supply pipe 100 or the freezing prevention unit It can be made to flow without congestion in the inside of (200).

Accordingly, the freezing prevention unit 200 automatically operates before the tap water falls below the freezing point and discharges the tap water to the other side of the freezing prevention unit 200, thereby preventing water from freezing. The specific configuration of the freezing prevention unit 200 will be described again later.

The drain pipe 300 is disposed inside the water supply pipe 100, and one end is connected to the other side of the freezing prevention unit 200 to receive the discharged water discharged from the freezing prevention unit 200, and the other end is frozen wave in which the water does not freeze. It may extend toward a safety zone (for example, the basement 11 of the building 10).

That is, the drain pipe 300 is connected to the other side of the freezing prevention unit 200 and is provided to receive the discharged water discharged from the freezing prevention unit 200 from the freezing prevention unit 200 and discharge it to the outside of the water supply pipe 100. . Since the drain pipe 300 is disposed in a state where the whole of the drain pipe 300 is inserted into the interior of the water supply pipe 100, the discharged water inside the drain pipe 300 may be prevented from being frozen by the latent heat of the tap water of the water supply pipe 100.

In other words, the tap water of the water supply pipe 100 is maintained at a temperature such that the water does not freeze by the freezing prevention unit 200, and when the water pipe 300 is inserted into the water supply pipe 100, the discharged water of the water pipe 300 is also Since the temperature is less affected by the external temperature and the temperature is maintained as much as the latent heat of the tap water in the water supply pipe 100, freezing of the water can be prevented.

For reference, if the drain pipe 300 is not inserted into the water supply pipe 100 and is exposed to the outside as it is, the discharged water inside the drain pipe 300 is frozen by the external temperature in a cold season, and accordingly, the freezing prevention unit 200 is normally The water supply pipe 100 may be frozen because it cannot be drained. However, according to an embodiment of the present invention, since the drain pipe 300 is inserted into the water supply pipe 100, it is possible to prevent the discharged water from the drain pipe 300 from being frozen by the latent heat of the tap water inside the water supply pipe 100. I can.

On the other hand, in an embodiment of the present invention, the freezing prevention unit 200 may be installed only on the indoor fire hydrant 20 disposed at the top of the building 10 as shown in FIG. 1 among a plurality of indoor fire hydrants 20 Do.

Of course, the freeze prevention unit 200 may be installed for each indoor fire hydrant 20, but even if the freeze prevention unit 200 is installed alone only on the top indoor fire hydrant 20, it goes to the indoor fire hydrant 20 at the bottom. Since the water in the water supply pipe 100 does not freeze because it affects the flow of tap water, tap water may be normally supplied to the other indoor fire hydrants 20 located under the indoor fire hydrant at the top.

In addition, as shown in Figs. 1 and 3, the other end of the drain pipe 300 is extended to the discharge unit 110 of the water supply pipe 100 located in a freeze safety zone (for example, the basement 11 of the building 10). I can.

The water supply pipe 100 located in the freeze safety zone 11 is not normally frozen well compared to other places in the building 10 due to the geothermal heat of the basement 11, so that the discharged water flowing through the drain pipe 300 is transferred to the water supply pipe 100. In order to discharge to the outside, a discharge part 110 is formed on one side of the water supply pipe 100 located in the frozen wave safety zone 11, and in this discharge part 110, the discharged water from the drain pipe 300 is transferred to the outside of the water supply pipe 100. A drain coupling 310 and a drain hose 320 for discharging may be provided.

The drain coupling 310 is fixedly coupled to the discharge unit 110 of the water supply pipe 100, and the other end of the drain pipe 300 is connected to one side to receive discharge water. In addition, a drain hose 320 is connected to the other side of the drain coupling 310 to discharge the drained water to the outside of the water supply pipe 100.

The end of the drain hose 320 may be connected to a drain tank 330 for storing drain water discharged from the drain pipe 300. The drainage tank 330 may be provided in the basement of the building 10, and the discharged water stored in the drainage tank 330 may be used as a method of resupplying when the supply of tap water is interrupted or insufficient, or may be used by supplying it to other consumers.

On the other hand, with reference to Figures 2, 4 and 5 will be described in detail for the anti-freeze unit 200.

The freezing prevention unit 200 may include a housing 210, a fixture 220, a freezing arrestor 230, and a fitting part 240.

The housing 210 has a predetermined accommodation space formed therein, and one end is connected to the water supply pipe 100 and the other end may be connected to the indoor fire hydrant 20. A thread 211 may be formed on the inner circumferential surface of the housing 210 so that the housing 210 can be connected to the water supply pipe 100 and the indoor fire hydrant 20. When connected to the water supply pipe 100 and the indoor fire hydrant 20, if necessary, it may be connected via a separate coupler (c). Accordingly, the housing 210 may receive tap water from the water supply pipe 100 and provide the tap water to the indoor fire hydrant 20.

The fixture 220 is a component installed on the inner circumferential surface of the housing 210, and may be provided to install the freeze preventer 230 and the fitting part 240 inside the housing 210. The fixture 220 may divide the inner space of the housing 210 into two spaces.

In addition, the freeze preventer 230 is installed inside the housing 210, and may be constrained by the fixture 220 by coupling with the fitting part 240 to be fixed inside the housing 210. The freeze preventer 230 may be accommodated in a space close to the indoor fire hydrant 20 among the spaces divided by the fixture 220 within the housing 210.

When the temperature of tap water introduced into the interior of the housing 210 falls below the freezing temperature, the freezing preventer 230 may prevent tap water from being frozen by introducing tap water to one side and discharging the tap water to the other side. An inlet hole 231 through which tap water is introduced may be formed at one side of the freezing preventer 230 and a discharge hole 232 through which tap water is discharged may be formed at the other side.

When the discharge hole 232 is opened by the temperature sensitive member accommodated therein, the freezing preventer 230 may be configured to flow tap water through the freezing arrestor 230 and into the drain pipe 300, wherein the temperature sensitive member is tap water. A temperature-sensitive wax used in a thermostat for automobiles may be used as having a property of expanding or contracting according to a temperature change of, but is not limited thereto and other materials may be used.

As described above, when the freezing arrestor 230 reaches a predetermined critical temperature (freezing temperature) or less, the temperature-sensitive member contracts and the tap water in the housing 210 flows toward the drainage pipe 300 through the freezing arrestor 230 before freezing. Freezing of water may be prevented by allowing water in the water supply pipe 100 and the housing 210 to flow without being stagnant. Since the freeze preventer 230 belongs to a generally well-known technique, further description will be omitted.

In addition, the fitting part 240 is also installed inside the housing 210, and the fitting part 240 is constrained to the fixture 220 by coupling with the freeze preventer 230 and fixed inside the housing 210. have. The fitting part 240 may be accommodated in a space close to the water supply pipe 100 among spaces divided by the fixture 220 within the housing 210.

One end 241 of the fitting part 240 is configured to pass through the fixture 220 and connect to the discharge hole 232 on the other side of the freezing arrestor 230 so that the discharged water can be introduced. One end 241 of the fitting part 240 may be formed with a thread for coupling to the discharge hole 232 of the freezing arrestor 230. In addition, the other end 242 of the fitting part 240 may be connected to the drain pipe 300 to supply discharged water to the drain pipe 300.

Therefore, when the temperature of the tap water falls below the freezing temperature, the tap water flowing into one side of the freezing arrestor 230 is discharged to the other side of the freezing arrestor 230, passes through the fitting part 240, and then can be provided to the drain pipe 300. have.

Meanwhile, as shown in FIGS. 4 and 5, the fixture 220 may include an outer rim 221, an inner rim 222, and a rib 223.

The outer rim 221 has a diameter corresponding to the inner circumferential surface of the housing 210 so as to be in close contact with the inner circumferential surface of the housing 210 and may be formed in a circular ring shape.

The inner rim 222 is formed with a diameter smaller than the diameter of the outer rim 221 inside the outer rim 221. A sliding hole 224 may be formed in the center of the inner rim 222 so that one end of the fitting part 240 penetrates.

The sliding hole 224 may be formed to have a diameter larger than one end of the fitting part 240 so that the one end 241 of the fitting part 240 can be rotated relative to the inside of the sliding hole 224. Accordingly, the freezing preventer 230 and the fitting part 240 are coupled to the inner rim 222 of the fixture 220, and the housing 210 is installed while the fixture 220 is installed on the inner circumferential surface of the housing 210. Even if it is rotated for the purpose, since the freezing preventer 230 and the fitting unit 240 are not rotated, it is possible to prevent the drain pipe 300 connected to the fitting unit 240 from being twisted.

In addition, the rib 223 is a configuration that connects the outer rim 221 and the inner rim 222, and the inner rim 222 may be supported by the outer rim 221 by the rib 223. In addition, the ribs 223 are provided to be spaced apart along the circumferential direction between the outer rim 221 and the inner rim 222, and an opening 225 may be formed between the ribs 223.

The opening 225 may allow tap water provided from the water supply pipe 100 to pass through the fixture 220 to be supplied to the indoor fire hydrant 20 or to be introduced into the interior of the freezing arrestor 230.

As described above, the present invention has been described using a preferred embodiment, but the scope of the present invention is not limited to the specific embodiment described, and those of ordinary skill in the art can as much as possible within the scope of the present invention. Substitution and modification of components is possible, and this also belongs to the rights of the present invention.

1: Freeze prevention system for indoor fire hydrants
10: building 11: winter safety zone (basement)
20: indoor fire hydrant
100: water supply pipe 110: discharge unit
200: freezing prevention unit 210: housing
220: fixture 221: outer rim
222: inner rim 223: rib
224: sliding hole 225: opening
230: freeze preventer 240: fitting part
300: drain pipe 310: drain coupling
320: drain hose

Claims (6)

A water supply pipe provided to the building to supply tap water to the indoor fire hydrant of the building;
A freezing prevention unit installed between the indoor fire hydrant and the water supply pipe and supplying tap water flowing from the water supply pipe to the indoor fire hydrant; And
It is provided inside the water supply pipe, one end is connected to the freezing prevention unit, the other end includes a drain pipe disposed in a freeze safe zone where water does not freeze,
When the temperature of the tap water falls below the freezing temperature, the tap water is discharged from the freezing prevention unit through the drain pipe to the freeze protection zone,
The freezing prevention unit,
A housing having one end connected to the water supply pipe and the other end connected to the indoor fire hydrant, and having an accommodation space therein;
A fixture installed on the inner circumferential surface of the housing to divide the housing into two spaces;
A freezing preventer that is accommodated in a space close to the indoor fire hydrant among the spaces of the housing divided by the fixture, and flows the tap water to one side and discharges the tap water to the other side when the temperature of the tap water falls below the freezing temperature; And
Among the spaces of the housing divided by the fixture, it is accommodated in a space close to the water supply pipe, one end passes through the fixture and is connected to the other side of the freeze preventer to introduce discharged water, and the other end is connected to the drain pipe to receive the discharged water. Including a fitting part supplied to the drain pipe,
Freeze protection system for indoor fire hydrants. The method of claim 1,
A plurality of the indoor fire hydrants are provided,
The plurality of indoor fire hydrants are each connected to the water supply pipe,
The freezing prevention unit is installed on an indoor fire hydrant disposed at the top of the building among a plurality of indoor fire hydrants,
Freeze protection system for indoor fire hydrants. The method of claim 1,
The other end of the drain pipe extends to the discharge portion of the water supply pipe located in the freeze safety zone,
The discharge unit is provided with a drain coupling and a drain hose for discharging the discharged water from the drain pipe to the outside of the water supply pipe,
Freeze protection system for indoor fire hydrants. delete The method of claim 1,
The fixture,
An outer rim formed in a circular ring shape so as to be in close contact with the inner circumferential surface of the housing;
An inner rim formed in the outer rim with a diameter smaller than that of the outer rim, and through which one end of the fitting part passes; And
Including; connecting the outer rim and the inner rim, a plurality of ribs are provided to be spaced apart along the circumferential direction, and formed between the plurality of openings through which the tap water provided from the water supply pipe passes; including,
Freeze protection system for indoor fire hydrants. The method of claim 5,
The inner rim has a sliding hole having a larger diameter than the one end of the fitting so that one end of the fitting part can be rotated relative to the inside,
Freeze protection system for indoor fire hydrants.

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