JPH0454498B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a water sprinkler pipe device including a water sprinkler pipe having water spray holes or nozzles in the pipe wall.

[Summary of the Invention] The present invention provides a water sprinkling pipe device equipped with a water sprinkling pipe in which a through hole or nozzle for water sprinkling is formed in the pipe wall. By applying a skin current to the inner surface,
By generating Joule heat inside the electric wire and on the inner surface of the sprinkler pipe, heated water can be sprayed from the through holes or nozzles of the sprinkler pipe.

[Prior art] Spraying of heated fluid (referring to a substance with fluidity) in snow melting or anti-freezing equipment for railways, roads, various buildings, etc., or in various facilities such as various factories and plants. is often required. For example, systems that spray hot water using sprinklers or the like are often used as snow melting devices or antifreeze devices for railways, roads, etc.

Snow melting or antifreezing equipment that sprays hot water typically has a special heating facility such as a boiler, and the hot water obtained by the heating facility is conveyed to the spraying location through a sprinkler pipe.

[Problems to be Solved by the Invention] In the conventional sprinkler pipe device for distributing hot water as described above, heating equipment such as a boiler was specially provided, so that an increase in equipment costs was unavoidable.

An object of the present invention is to provide a sprinkler pipe device that can efficiently heat and spray water by generating heat in the sprinkler pipe itself.

[Means for solving the problem] The first invention of the present application is based on the first invention showing one embodiment thereof.
As seen in the figure, the water sprinkling pipe device is equipped with a water sprinkling pipe 10 having water sprinkling holes (or nozzles) 10h in the pipe wall, and in the present invention, the water sprinkling pipe 10
A heating region H is set in at least a portion of the heating region H, and the heating region is formed of a ferromagnetic material. Then, an electrical wire 12 coated with insulation is inserted into the heating region H of the water spray pipe, and one end 12a of the electrical wire 12 and one end 10a of the heating region of the water spray pipe 10 are connected to each other. Also electric wire 1
2 and the other end 10b of the heating area of the sprinkler pipe 10 are connected to the AC power source 13 through a power terminal 14.
a and 14b, respectively.

The second invention of the present application applies a so-called induction type skin current heating system, and in this invention, as shown in FIG.
An electrical wire 12 coated with insulation is inserted into the heating area H of 0, and both ends 12a and 12b of the electrical wire are led out from both ends of the heating area while being insulated from the water spray pipe 10. Then, both ends of the heating area H of the water sprinkler pipe 10 are electrically connected to each other, and the electric wire 12
A power supply terminal 14 whose both ends are connected to an AC power supply 13
a, 14b.

[Operation of the Invention] In the above-mentioned water sprinkling pipe device, water is supplied into the water sprinkling pipe 10 by appropriate means. When the electric wire is energized, a skin current flows through the inner surface of the heating area of the sprinkler pipe, and the skin current generates Joule heat, and at the same time, Joule heat is generated inside the electric wire. The water in the sprinkler pipes is directly heated and raised in temperature by these heats,
It is discharged to the outside from the through holes or nozzles 10h, 10h, .

In this case, assuming that the heat generated in the entire device is 100, the heat generated on the inner surface of the water pipe is approximately 80%, and the heat generated in the electric wire is approximately 20%. In the present invention, since both of these heat emissions are directly transmitted to the water, water can be efficiently heated and power consumption can be saved.

Furthermore, since there is no need to separately install equipment such as a boiler to generate heat in the sprinkler pipe itself, and the structure is simple, just inserting an electric wire into the sprinkler pipe, the equipment cost can be reduced.

Furthermore, if the heat generated on the inner surface of the sprinkler pipe is directly transferred to the water as in the present invention, when the amount of heat generated on the inner surface of the sprinkler tube is changed by changing the energizing current or pattern, the amount of heat generated will change. can be quickly transmitted to the water. Therefore, the responsiveness of the water temperature to changes in the applied current can be improved, and when it is necessary to control the water temperature, the control can be performed appropriately.

[Examples] Examples of the present invention will be described below with reference to the accompanying drawings.

Embodiment 1 Figures 1A and 1B show an embodiment of the first invention of the present application, in which numeral 10 is a water sprinkler pipe made of a ferromagnetic material such as iron. For example, a steel pipe can be used. Openings at one end 10a and the other end 10b of the water sprinkler pipe 10 are closed by lids 10A and 10B, respectively. A branch pipe 10C is connected to the side wall near the other end 10b of the water pipe 10, and this branch pipe 10C is connected to the side wall of the water pipe 10 near the other end 10b.
This is the inlet L1 of the inlet. In addition, there are many water sprinkling holes (or nozzles) 10h on the pipe wall of the water sprinkling pipe 10.
is formed. The position of this through hole 10h is appropriately set depending on the direction of water spraying.

In this embodiment, substantially the entire water pipe 10 except for the pipe ends is a heating area H, and inside the water pipe 10 there is a core wire 12A and an insulating coating 1 covering the core wire.
An electric wire 12 consisting of 2B is inserted. One end 12a of this electric wire 12 is connected to the heating area H of the water sprinkler pipe 10.
It is led out to the outside through a bushing Ba with a liquid-tight structure provided near one end Ha, and the one end 12
a is electrically connected to the outer surface near one end 10a of the water sprinkler pipe 10 (near one end of the heating area). The other end 12b of the electric wire 12 is led out through a bushing Bb having a liquid-tight structure provided near the other end of the heating region H, and is connected to a power supply terminal 14a. The outer surface of the sprinkler pipe 10 near the other end Hb of the heating area is connected to a power supply terminal 14b via an insulated wire 15, and an AC power supply 13 is connected between the power supply terminals 14a and 14b. Furthermore, the outer surfaces of one end 10a and the other end 10b of the water pipe 10 are connected to ground wires 1, respectively.
It is grounded by 6 and 17. AC power supply 13
A power source with a commercial frequency of 50Hz or 60Hz can be used.

The electric wire 12 may be any wire as long as it has a predetermined heat resistance and a core wire 12A having a predetermined current capacity is covered with an insulating coating 12B made of an insulating material having water resistance.

The connection position between one end 12a of the electric wire 12 and the water spray pipe 10 and the connection position between the terminal 14b and the water spray pipe 10 may be in the vicinity of the end positions Ha and Hb of the heating area H, respectively, and are not necessarily located at the end of the heating area. There is no need to match the position.

Although the electric wires 12 are shown as being arranged concentrically inside the water spray pipe 10 in FIGS. 1A and 1B, the electric wires 12 do not need to be positioned concentrically within the water spray pipe 11. As shown in FIG. 1C, the insulation coating 12B of the electric wire 12 is
It may be in contact with the inner surface of the

In the above embodiment, water 11 from the inlet L1
is supplied into the sprinkler pipe 10, and the water fed through the sprinkler pipe 10 is discharged from the through hole 10h. terminal 14
When the output of the AC power supply 13 is applied between a and 14b, the electric wire 12 and the water pipe 1 are connected from the AC power supply 13.
AC power flows through 0, but at this time water pipe 10
Since the current flowing through the tube is concentrated on the inner surface of the water spray pipe 10 due to the skin effect, a large amount of Joule heat is generated on the inner surface of the water spray pipe 10. At this time, Joule heat is also generated in the electric wire 12, but if the total Joule heat generated is 100, about 80% of the heat is generated on the inner surface of the water sprinkler pipe 10, and the remaining about 20% of the heat is generated in the electric wire. The water 11 is heated by these heats and enters the through hole 1.
Emitted from 0h.

The thickness of the tube wall of the water sprinkler tube 10 is set to be sufficiently larger than the depth of the skin portion through which current flows due to the skin effect, for example, approximately the thickness of a commonly used gas tube. If the thickness of the wall of the sprinkler pipe 10 is set in this way, no current will flow through the outer surface of the sprinkler pipe 10, so the outer surface of the sprinkler pipe 10 can be grounded as shown in the figure. The outer surface can be kept at ground potential, preventing electric shock accidents.
When using a commercial AC power source, the preferred thickness of the wall of the water sprinkler pipe 10 is usually about 2 mm to 5 mm.

In the above embodiment, some of the heat is dissipated from the outer surface of the pipe wall of the sprinkler pipe 10, but this heat can be effectively utilized when the sprinkler pipe is used for a snow melting device or an antifreeze device. . In other words, in snow melting equipment and antifreeze equipment that use hot water spraying, it is the hot water that primarily performs the snow melting and antifreezing functions.
In this case, the sprinkler pipe 10 is laid on the road surface and
If some of the heat is dissipated from the outer surface of the snow, the heat can also be used to prevent snow from melting or freezing. If the heat dissipated from the outer surface of the water pipe is effectively utilized in this way, it is possible to eliminate wasteful heat loss and to make effective use of electric power.

Embodiment 2 FIG. 2 shows a second embodiment of the first invention of the present application. In this embodiment, one end 1 of the water sprinkler pipe 10 is
The opening end on the 0a side is closed by the end wall 10A,
The open end on the other end (not shown) side serves as an inlet for water. In this example, the heating area H is set only in a part of the water spray pipe 10, and the electric wire 12 is inserted into the heating area H of the water spray pipe 10 so as to extend from one end of the heating region to the other end. There is. This electric wire 12
One end 12a of the electric wire 12 is led out through a bushing Ba of a liquid-tight structure provided near one end Ha of the heating area H of the water sprinkler pipe and electrically connected to the outer surface of the water sprinkler pipe 10, and the other end 12b of the electric wire 12 is heated. A liquid-tight bushing provided near the other end Hb of area H
It is led out through Bb and connected to the terminal 14a. Also, the other end of the heating area H of the water sprinkler pipe 10
The outer surface near Hb is electrically connected to the terminal 14b via the insulated wire 15, and the terminals 14a, 14
The output of the AC power supply 13 is applied between the terminals b.

In this embodiment, the water 11 fed through the sprinkler pipe 10 is heated when passing through the heating region H, and the heated water flows through the through hole (or nozzle) 10.
h, 10h,...

Embodiment 3 FIG. 3 shows a third embodiment of the first invention of the present application. In this embodiment, the portions constituting the heating region H of the water sprinkler pipe 10 are diffracted multiple times in different directions alternately. An electric wire 12 is inserted into the sprinkler pipe 10 from one end Ha of the heating area to the other end Hb. Electric wire 12
One end 12a is led out to the outside through a bushing Ba provided near one end of the heating area H of the water sprinkler pipe 10 and electrically connected to the outer surface of the water spray pipe 10, and the other end 12b of the electric wire 12 is connected to the outer surface of the water spray pipe 10. The power terminal 14a is led out through a bushing Bb attached to the tube wall near the other end of the heating area H.
It is connected to the. In addition, the heating area H of the water sprinkler pipe 10
The outer surface near the other end Hb is connected to a power supply terminal 14b via an insulated wire 15.

With the configuration shown in Fig. 3, the length of the heating area H in the lateral direction can be made shorter than the actual length of the tubes that make up the heating area. By increasing the length, you can increase the amount of water per unit area.

Embodiment 4 FIG. 4 shows an embodiment of the second invention of the present application. In this embodiment, a water sprinkler pipe 1 made of a ferromagnetic material is
0 is formed in a U-shape, and the open ends of one end 10a and the other end 10b are connected to end walls 10A and 10, respectively.
Closed by B. One end 10 of the sprinkler pipe 10
A branch pipe 10C is connected to the pipe wall near a, and the branch pipe 10C serves as a water inlet L1. In addition, a large number of water sprinkling holes (or nozzles) 10h are formed in the wall of the water sprinkling pipe 10.

In this example, the entire U-shaped portion of the water sprinkler pipe 10 serves as the heating region H. An insulated electric wire 12 is inserted into the heating region H, and both ends 12a of the electric wire 12,
12b connects the water sprinkler pipe 1 through bushings Ba and Bb provided near both ends Ha and Hb of the heating area.
It is led out to the outside in a state insulated from zero. The outer surfaces near both ends of the heating area H of the water sprinkler pipe 10 are electrically connected to each other via an insulated wire 18, and both ends 12a and 12b of the wire 12 led out to the outside are connected to an AC power source 13, respectively. It is connected to terminals 14a and 14b.

In this embodiment, when AC power flows through the electric wire 12, a voltage is induced in the water sprinkler pipe 10, and a current flows in a closed circuit constituted by the water spray pipe 10 and the electric wire 18 connecting both ends thereof. Because this current flows only in the area close to the inner surface of the water sprinkler pipe 10 due to the skin effect,
Joule heat is generated on the inner surface of the water sprinkler pipe 10. Further, the electric current flowing through the electric wire 12 generates Joule heat within the electric wire. Therefore, in this embodiment as well, the same effect as the first invention can be obtained, and the water flowing in from the inlet L1 is efficiently heated by both the heat generated on the inner surface of the sprinkler pipe 10 and the heat generated in the electric wire 12. and is released from the through hole 10h.

The embodiments of the first invention and the second invention of the present application have been described above. Next, with reference to FIGS. Let me explain some examples.

Application Example 1 Figure 5 shows a first application example in which the present invention is applied to a hot water spray type snow melting device.
One end 10a and the other end 1 of a water sprinkler pipe 10 made of a steel pipe
0b is closed by lids 10A and 10B, and one end and the other end of the sprinkler pipe are respectively connected to a terminal box 20.
and inserted into the power supply box 21. One end 12a of the electric wire 12 inserted into the water pipe 10
is a bushing attached to the pipe wall of the water pipe 10.
It is led out into the terminal box 20 through Ba and is electrically connected to the outer surface of one end 10a of the water sprinkler pipe 10 within the terminal box 20. The other end 12b of the electric wire 12 is connected to the power supply box 21 through a bushing Bb provided near the other end 10b of the water pipe 10.
The other end 10 of the sprinkler pipe 10 is connected to a power terminal 14a provided inside the power supply box.
The outer surface of b is connected via an electric wire 15 to a power supply terminal 14b inside the power supply box. The outer surface of one end 10a of the water spray pipe 10 is also connected to a ground wire 16 within a termination box 20, and the outer surface of the other end 10b of the water spray pipe 10 is connected to a ground wire 17 within a power supply box 21.

A large number of through holes (or nozzles) 10h, 10h, . . . are provided in the wall of the water sprinkling pipe 10.
A branch pipe 10C is connected to the pipe wall on the power supply box 21 side. The branch pipe 10C is connected to the outlet side of a feed pump 23 via a water supply pipe 22, and the inlet side of the pump is connected via a pipe 24 to a water storage tank 25 which also serves as a water recovery tank. The inside of the sprinkler pipe 10 is always filled with water, and when the pump 23 is operated and water is pumped into the sprinkler pipe 10, hot water is sprayed from the through hole (or nozzle) 10h, and some of the sprayed water is The water is collected into a water storage tank 25 through a water collection groove or piping (none of which is shown) provided on the road surface.

When this snow melting device is used for railways, a sprinkler pipe 10 with a length of one to several kilometers is constructed by adding steel pipes of appropriate lengths, and the sprinkler pipe 10 is arranged along the railroad tracks. .

In order to supply power between the electric wire 12 and the water pipe 10,
A control panel 26 is provided. The control panel 26 uses the commercial frequency AC power supply 13 as its power source, receives the output signal of the temperature detector 27 that detects the temperature, and the output signal of the snowfall detector 28 as input, and operates between the power terminals 14a and 14b based on these signals. The supply of AC voltage to the pump 23 and the operation of the pump 23 are controlled.

The snowfall detector 28 used in this embodiment consists of a light emitter 28a and a light receiver 28b that receives the light emitted by the light emitter. Outputs a snowfall detection signal when it is blocked by snow. Note that this snowfall detector may be of another type.

For example, the control panel 26 can set the temperature to a set temperature (3°C to
5℃) or lower, the power supply terminals 14a, 14
An alternating current voltage is applied between the electric wire 12 and the water sprinkler pipe 1.
The inside of the water spray pipe 10 is preheated by generating heat on the inner surface of the water spray pipe 10.
This preheating is necessary to prevent the water sprinkler pipe 10 from freezing. When the snowfall detector 28 generates a snowfall detection signal, power is supplied to the pump 23 and the sprinkler pipe 1
The supply of water to the interior of 0 is started. The water force-fed into the sprinkler pipe 10 is directly heated by the heat generated in the inner surface of the sprinkler pipe 10 and the electric wire 12, and becomes hot water. It is injected from 10h. This wets the road surface, melts snow, and prevents snow from accumulating.

In the above snow melting device, the temperature of the water spouted from the sprinkler pipe 10 is appropriately about 10° C. higher than the normal air temperature (for example, 12° C. to 13° C. during snowfall).
If the water temperature is too low, the snow melting effect will decrease. In addition, if the water temperature is too high, the water spouted from the sprinkler pipe will atomize immediately after it is ejected, making it impossible to wet the road surface and making it difficult to obtain snow melting effects. This will impede vehicle operation due to poor visibility.

In the above description, the operation of the pump is started at the same time as snowfall starts, but it is also possible to start operation of the pump after snowfall has started to a certain extent. In general, in railways, it is not necessary to completely melt or remove snow, and trains can operate if so-called snow jamming occurs, so electric power is used to melt snow to the extent that it does not interfere with operation. Controlling supply is economical. Furthermore, in railway ballast tracks, when snowmelt water permeates into the roadbed, the ground becomes weak, so it is preferable to use a system for recovering snowmelt water as described above. Furthermore, if such a collection system is provided, water can be saved.

In the above snow melting device, a part of the heat generated on the inner surface of the sprinkler pipe 10 is transferred to the outer surface of the sprinkler pipe 10 and radiated to the outside, but this heat is useful for melting the snow around the sprinkler pipe 10. There is no wasted energy, and energy conservation can be achieved.

Application Example 2 Fig. 6 shows an application example in which the heating device of the second invention shown in Fig. 4 is applied to a snow melting device. Both ends of the water spray pipe 10 in which the through holes 10h are formed are inserted into a box 30, and the outer surfaces near both ends of the water spray pipe 10 are interconnected within the box 30 by electric wires 18. Further, both ends of the electric wire 12 are led out into the box 30 through bushings Ba and Bb, and a power terminal 14a provided in the box 30 is connected.
and 14b. Other points are 5th
This is similar to the example shown in the figure.

Application Example 3 Figures 7A and 7B show an example in which the snow melting device S1 of Application Example 1 and the snow melting device S2 of Application Example 2 are combined. The water sprinkler pipe 10 of the snow melting device S1 of Application Example 1 is placed at a predetermined height position on the outside of each of R1 and R2.
are arranged parallel to the track, and each water pipe 10 is connected to the support 3.
1 is supported. Also orbits R1 and R2
A U-shaped water sprinkler pipe 10' of the snow melting device S2 of application example 2 is arranged on the roadbed 32 between the two. A control panel 26 is provided in common for the snow melting devices S1, S1 and the snow melting device S2, and this control panel controls the energization of the sprinkler pipes and electric wires of the snow melting devices S1 and S2, and the energization of the water pump. It is becoming more and more like this.

Application Example 4 Figures 8A and 8B show an example in which the snow melting device S1 of Application Example 1 and the snow melting device S2 of Application Example 2 are applied to a snow melting device (or antifreeze device) for a highway, etc. In this example, the up lane 4 of the road
Water sprinkler pipes 10 of a snow melting device S1 similar to Application Example 1 are arranged outside of each of the 0 and down lanes 41 along the lanes. In addition, a snow melting device S similar to Application Example 2 is installed on the median strip 42 between lanes 40 and 41.
Two water sprinkler pipes 10 are provided. one lane 4
The end of the sprinkler pipe 10 located outside of lane 0 is led through underground to the outside of lane 41, and from the control panel 26 located outside of lane 41,
Power is supplied to the snow melting devices S1, S1 on the outside.
In addition, in order to prevent the snow melting device from interfering with the running of vehicles at the cut portion of the separation strip 42, the snow melting device S2
The sprinkler pipe 10 is installed so as to go underground at the part where the separation strip 42 is cut. Snow melting device S2
Ends 10a and 10b of the water sprinkler pipe 10 are guided to the outside of the lane 41 through underground, and power is supplied from the control panel 26 to the electric wire of the snow melting device S2. Inflow ports L1 and L that supply water to the sprinkler pipes of each snow melting device
1, . . . are connected to a water supply pump (not shown), and the pump is controlled by a control panel 26 to supply water to each water supply pipe.

In this example, it goes without saying that no through holes are provided in the underground portions of each water pipe.

Application example 5 Figure 9 shows an example in which a snow melting device is installed on the roof of a building 50. In this example, application example 2 is used.
A snow melting device S2 similar to the above is used. Power is supplied to the electric wire 12 and pump 23 of the snow melting device S2 from the control panel 26, and the hot water injected from the through hole of the sprinkler pipe 10 is collected by the gutter 45 and sent to the water storage tank 2.
It will be collected on 5th.

Application Example 6 Figures 10A and 10B show a snow melting device similar to the snow melting devices in Application Examples 1 and 2 on the roof of a tank 51 with a circular cross section such as a large storage tank, reaction tank, filtration tank, etc. installed in a heavy snowfall area. This shows an example where the annular part 10R and the straight part 1 are installed in combination.
A snow melting device similar to Application Example 1 is configured by a water sprinkler pipe 10 having a diameter of 0L and an electric wire 12 inserted into the water sprinkler pipe 10 and having one end connected to one end of the water sprinkler pipe 10. Annular portion 10 of water pipe 10
R is fixed at a position near the center of the conical roof 51a of the tank 51. In addition, the annular portion 1
An annular portion 10R′ with a diameter larger than 0R and the annular portion 1
A snow melting device similar to Application Example 2 is constructed by a sprinkler pipe 10' consisting of straight portions 10L' and 10L' extending radially outward from both ends of 0R' and an electric wire 12' inserted into the sprinkler pipe 10'. An annular portion 10R' of a sprinkler pipe 10' of this snow melting device is fixed to a portion near the outer periphery of the roof 51a of the tank 51.
A water supply pipe 22 for supplying water to each of the water sprinkler pipes 10, 10' is arranged along the side surface of the tank 51 and connected to a water supply pump (not shown).

[Effects of the Invention] As described above, according to the present invention, the Joule heat generated by the skin current flowing through the inner surface of the heating area of the water sprinkler pipe and the Joule heat generated by the electric current flowing through the electric wire are directly transferred to the water. Since the water is heated, the water can be efficiently heated to hot water, and there is an advantage that water heated to a predetermined temperature can be sprayed with less power consumption. Further, according to the present invention,
Since the sprinkler pipe itself that passes water generates heat, there is no need to install separate heating equipment like in conventional equipment.
There is an advantage that the cost of the device can be reduced. Furthermore, in the present invention, since the heat generated on the inner surface of the water sprinkler pipe is directly transferred to the water, the responsiveness of the water temperature to changes in the applied current can be increased, and when it is necessary to control the water temperature, the control can be performed appropriately. It can be done accurately.

[Brief explanation of the drawing]

FIG. 1A and FIG. 1B are a longitudinal sectional view and a transverse sectional view showing a first embodiment of the first invention of the present application, respectively;
Fig. 1C is a cross-sectional view showing different arrangement states of the electric wires in the same embodiment, Fig. 2 is a longitudinal sectional view showing the second embodiment of the first invention of the present application, and Fig. 3 is the first invention of the present application. a partially omitted plan view showing the third embodiment of the invention;
FIG. 4 is a plan view showing an embodiment of the second invention of the present application;
FIG. 5 is a block diagram showing a first application example of the present invention, FIG. 6 is a block diagram showing a second application example of the present invention, and FIG.
FIG. A and FIG. 7B are a plan view and a sectional view taken along line bb, respectively, showing a third application example of the present invention, and FIG.
9 and 8B are a plan view and a sectional view taken along the line bb line showing a fourth application example of the present invention, respectively, and FIG. 9 is a schematic perspective view showing a fifth application example of the invention, and FIG.
FIG. A and FIG. 10B are a front view and a plan view, respectively, showing a sixth application example of the present invention. 10... Watering pipe, 10h... Watering hole, 11
...Water, 12...Electric wire, 13...AC power supply, 14
a, 14b...power terminal, H...heating area.

Claims (1)

[Scope of Claims] 1. In a water sprinkling pipe device equipped with a water sprinkling pipe in which a water sprinkling hole or nozzle is formed in the pipe wall, at least a part of the water sprinkling pipe is a heating region, and the heating region is formed of a ferromagnetic material. , inserting an insulated electric wire into the heating area of the sprinkler tube to interconnect one end of the electric wire and one end of the heating area of the sprinkler tube, and connecting the other end of the electric wire to the heating area of the sprinkler tube. An electric heating type water sprinkler pipe device characterized in that the other end is connected to a power terminal connected to an AC power source. 2. In a water sprinkling pipe device equipped with a water sprinkling pipe in which water sprinkling holes or nozzles are formed in the pipe wall, at least a portion of the water sprinkling pipe is a heating region, and the heating region is formed of a ferromagnetic material, and heating of the water sprinkling pipe is performed. Insert an insulating coated electric wire into the area, and lead both ends of the electric wire to the outside from both ends of the heating area while being insulated with respect to the water spray pipe, and connect both ends of the heating area of the water spray pipe to each other. An electrothermal water sprinkler pipe device, characterized in that it is electrically connected, and both ends of the electric wire are connected to power terminals connected to an AC power source. 3. The electrically heated water sprinkler pipe device according to claim 2, wherein the heating area of the water sprinkler pipe is formed in a curved shape such that both ends thereof are located on the same side.