JP2001214478A - Defrosting method for frozen piping - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a method for deicing a frozen pipe which does not require facilities such as a blower and a heater, and thus has a low initial facility cost. SOLUTION: In a water pipe composed of a double pipe having a communication space between an outer tube and an inner tube, at least two or more fluid supply ports are provided in the communication space, and two or more of the fluid supply ports are provided.
Are placed at the high and low positions of the pipeline, respectively.
When the water pipe is frozen, a heating fluid is introduced from one of the high and low fluid communication ports, and the frozen pipe is thawed by flowing through the communication space, and the waste heating fluid is supplied to another or the same fluid communication port. Alternatively, a method for deicing a frozen pipe discharged from a fluid circulation port provided at a lowest position of a pipeline.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for deicing frozen water pipes.

[0002]

2. Description of the Related Art As an antifreeze pipe, there is a practically open flat 3-10.
As disclosed in Japanese Patent No. 3363, a communication space is formed between the inner peripheral surface of the outer pipe and the outer peripheral surface of the water pipe of the double pipe in which the water pipe is inserted into the outer pipe. 2. Description of the Related Art There is known an anti-freezing pipe in which air having a temperature capable of preventing freezing of a fluid in a water pipe can flow through a space. The structure of this piping is such that the above-mentioned double pipes are gathered and hot air is blown into a box body in which the communication space of the double pipe is opened, and this hot air is sent into the communication space of the double pipe to prevent freezing. It is intended.

[0003] However, in the above-mentioned known piping, even if the piping is frozen, it is possible to thaw the ice by increasing the temperature of the air to be circulated, but in this anti-freezing piping, hot air is supplied to the communication space. Therefore, there is a problem that a permanent installation of a blower, a heater and the like is required, and initial equipment costs are high.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for deicing a frozen pipe which does not require permanent installation of a blower, a heater or the like, and thus has a low initial equipment cost.

[0005]

According to a first aspect of the present invention, there is provided a method for deicing a frozen pipe according to the first aspect of the present invention (invention 1), wherein a double pipe having a water pipe inserted in a sheath pipe is used. At least two fluid communication ports are provided in the communication space formed between the inner peripheral surface of the pipe and the outer peripheral surface of the water pipe. A method for deicing a frozen pipe characterized by introducing a heating fluid having a temperature capable of deicing a pipe, defrosting the freezing, and discharging the heating fluid from another fluid flow port or the same fluid flow port. It is.

According to a second aspect of the present invention, there is provided a method for deicing a frozen pipe (invention 2), wherein at least two liquid flow ports are respectively disposed near both ends of the entire length of the double pipe. It is a method for deicing a frozen pipe according to invention 1 which is characterized by the following.

According to a third aspect of the present invention, there is provided a method for deicing a frozen pipe (invention 3), wherein one of the liquid flow ports is disposed at a relatively high position in the pipe and at least one of the other liquid flow ports is compared with the pipe. In addition, the present invention provides a method for deicing a frozen pipe according to any one of Inventions 1 to 2, wherein the method is arranged at an extremely low position.

[0008] At least two fluid communication ports provided in the communication space formed between the inner surface of the sheath pipe and the outer surface of the water pipe are connected to one of the fluid communication ports in the communication space when the pipe is frozen. The purpose is to introduce a warming fluid at a temperature that can thaw the freezing pipe to defrost the freezing, and to discharge the warming fluid from another fluid circulation port.

The fluid flow opening may be any type as long as the heating fluid can be introduced and discharged into the communication space. For example, it may be provided directly in the communication space, or a water faucet box containing a faucet device and a water faucet box. A communication space may be opened with a header box that houses the distribution header, and the box may be provided in each of these boxes. Further, the number of liquid flow ports provided is not limited to two. For example, in consideration of the case where the heating fluid is hot water, it may be provided at a position where the fluid can be completely discharged, for example, at the lowest position of the pipe.

[0010] Further, the fluid flow port must be able to guide the warming fluid to the communication space of the frozen portion of the double pipe, and therefore, one fluid passage is provided near each end of the entire length of the double pipe. It is desirable that they are arranged one by one. With this arrangement, even if the entire length of the double pipe is frozen, it is possible to thaw all the pipes.

As the heating fluid at a temperature at which the ice can be thawed, for example, hot water such as remaining hot water in a bath or warm air such as a futon dryer or a dryer can be used. For example, when the heating fluid is hot air such as a dryer, for example, the introduction and discharge of the hot air may be performed using any fluid flow opening as long as the hot air can be introduced into the frozen portion of the pipe. It is preferable to use a fluid circulation port that is located farthest from the fluid circulation port used for introduction because the entire length of the pipe can be thawed.

Further, even when the heating fluid is a liquid such as hot water, the hot water may be introduced into the communication space from any fluid flow opening, but the fluid flow opening is relatively high at a relatively high position of the pipe. Since the warm water flows into the communication space under the natural flow of gravity when it is disposed at the position, the fluid flow port disposed at a relatively high position of the pipe can usually be suitably used. When introducing the hot water, if all the fluid flow ports other than the fluid flow port for introducing the hot water are closed, the hot water will stay in the communication space, and the heat of the hot water will be effectively defrosted. Available to The hot water after the thawing is discharged from the fluid circulation port located at the lowest position so that the hot water does not remain in the communication space.

(Operation) The method for deicing a frozen pipe according to the present invention comprises:
By flowing a heated fluid at a temperature that allows freezing to defrost, to the communicating space formed between the inner surface of the outer pipe of the water pipe with a double pipe structure and the outer face of the water pipe that is the intubation. Since the defrosting of the frozen pipe is performed, there is no need to install a blower and a heater in advance to lay the pipe and make it permanent, and the initial equipment cost is low. In addition, as the heating fluid, for example, hot water such as hot water remaining in a bath or warm air such as a futon dryer or a dryer can be used, so that anyone can perform the deicing operation.

[0014]

Embodiments of the present invention will now be described in detail with reference to the drawings. The present invention can be applied to an ordinary fluid supply pipe having a double pipe structure, and can be particularly suitably applied to a water supply pipe. Note that the present description is an example of a water pipe in which a double pipe in which a vinyl chloride resin water pipe is inserted into a vinyl chloride resin outer pipe is piped inside a normal home inner wall.

FIG. 1 is a partially cutaway perspective view showing an embodiment of a method for deicing a frozen pipe according to the present invention. In this embodiment, the header box 1 is provided with a fluid discharge port (hereinafter, referred to as a fluid discharge port) 11 for discharging fluid on the bottom surface thereof.
The water distribution header 12 is stored inside and is arranged below the floor F. On the other hand, the faucet box 2 has a tap faucet 21 and a fluid supply port (hereinafter referred to as a fluid supply port) 22 for supplying fluid.
Are arranged on the indoor wall W. The water pipe 3 between the header box 1 and the faucet box 2 is an outer pipe 4
Is formed into a double pipe 5, and a communication space 51 formed between the outer surface of the water pipe 3, which is an insertion pipe, and the outer pipe 4 has both the inner space of the header box 1 and the inner space of the faucet box 2. This space is open to a continuous space to form a continuous space, and this space is isolated from the outside air so that fluid flowing through the space does not leak to the outside.

Therefore, in the case of this embodiment, the faucet box 2
Is located at a high position in the water pipe, and the header box 1
Is located at a lower position, the fluid supply port 22 is at the highest position of the pipeline, the fluid discharge port 11 is at the lowest position of the pipeline, and the fluid supplied from the fluid supply port 22
Through the fluid outlet 11.

The materials of the faucet box 2 and the header box 1 are not particularly limited, but metals such as stainless steel, rust-proofed iron and aluminum, vinyl chloride resin, synthetic resin such as polyethylene, ABS and FRP, and composite materials. If the resin is selected from processed ones, it can be suitably used without fear of rust.

The double pipe 5 is piped from the faucet box 2 to the header box 1 so that water does not stay.
The fluid supplied to the faucet box 2 flows down to the header box 1 through the communication space 51, and the header box 1
The fluid is discharged through, for example, a drainage groove (not shown) through the discharge port 11 without staying in the inside, and in the continuous space (fluid path) from the faucet box 2 to the header box 1, fluid Is kept from staying.

Now, when the water pipe 3 is frozen, if hot water is used as the heating fluid, the fluid supply port cover 23 of the normally closed faucet box 2 is removed, and the fluid supply port 22 is closed. The heated fluid is supplied into the faucet box 2. The supplied warming fluid enters the communication space 51 from the faucet box 2 and heats the frozen water pipe 3 which is the insertion pipe of the double pipe 5. The frozen water in the water pipe 3 is thawed by heating, and the temperature of the heated fluid is reduced, guided to the header box 1 below, and discharged from the outlet 11 to a drain or the like.

A valve (not shown) is attached to the fluid discharge port 11, and the valve is closed when hot water is introduced to supply a heating fluid.
It is also possible to heat the water pipe 3 while staying in the communication space 51 and to thaw frozen water. After thawing, open the valve and discharge waste hot water.

Alternatively, hot water may be supplied from the fluid discharge port 11 to thaw the ice, and after the ice is thawed, the waste hot water may be discharged from the same fluid discharge port 11. In this case, the liquid level position of the supplied hot water may be observed at the fluid supply port 22, and the supply of the hot water may be stopped when the liquid becomes full.

When hot air such as a futon dryer or a drier is used as the heating fluid, any position of the fluid flow port may be used as the hot air inlet and outlet. For example, as in the case of hot water, it may be introduced from above and discharged from below, or vice versa, but it is advantageous from the viewpoint of thermal efficiency to make the air flow upward from below. In this case, since the heat capacity of the hot air is small, the defrosting speed of the freezing pipe tends to be slow. Therefore, other fluid flow ports other than the fluid flow port used for exhaust are closed and the hot air flow is closed. Should be carried out so that they do not escape.

When hot water is used as the heating fluid, there is a possibility that a portion of the continuous space extending from the faucet box 2 to the header box 1 (fluid path) has a downward bent portion, and the hot water may stay. In some cases, a drain valve (not shown) is provided at the lowest position of the bend, and after de-icing, hot water remaining in the continuous space is discharged, sucked out with vacuum, or hot air is blown. It is necessary to dry or keep the communication space 51 in a state in which there is no fluid in the communication space 51 by an appropriate method. This is not a concern when the heating fluid is hot air.

[0024]

As described above, in the method for deicing a frozen pipe according to the present invention, it is not necessary to permanently install a blower or a heater in advance, and the equipment cost is low. In addition, as the heating fluid, for example, hot water such as hot water remaining in a bath or hot air such as a futon dryer or a dryer can be used, so that it is inexpensive.
Anyone can perform the de-icing work.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a method for deicing a frozen pipe according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Header box 11 Fluid discharge port 12 Water distribution header 2 Water faucet box 21 Water tap 22 Fluid supply port 23 Fluid supply port lid 3 Water pipe 4 Exterior pipe 5 Double pipe 51 Communication space F Floor W Interior wall

Claims (3)

[Claims] 1. A pipe using a double pipe in which a water pipe is inserted in a sheath pipe, wherein at least two pipes are provided in a communication space formed between an inner peripheral surface of the sheath pipe and an outer peripheral face of the water pipe. Is provided, and when the pipe is frozen, a heating fluid having a temperature capable of defrosting the frozen pipe is introduced from one fluid flow port of the flow space to defrost the freezing, and the other fluid is released. A method for deicing a frozen pipe, comprising discharging the heating fluid from a flow port or the same fluid flow port. 2. The method for deicing a frozen pipe according to claim 1, wherein at least two liquid flow ports are disposed near both ends of the entire length of the double pipe. 3. The liquid supply apparatus according to claim 1, wherein one of the liquid flow ports is disposed at a relatively high position in the pipe, and at least one of the other liquid flow ports is disposed at a relatively low position in the pipe. 3. The method for deicing a frozen pipe according to claim 1 or 2.