JP2007051540A - Mist eliminating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device using far infrared rays which creates fine visibility, and does not cause a trouble in a public transportation facility running without trouble when mist develops, in the public transportation facility such as a road, an airport, and a harbor. <P>SOLUTION: The mist eliminating device includes a mist sensing monitor that monitors the unfavorable influence of mist on visibility, and a system which supplies electricity to heat a mesh infrared emitter, and is constructed to enclose a mist eliminating space according to a signal from the mist sensing monitor. The mesh of infrared emitter is formed in such a way that a plurality of carbon fiber clusters which are intertwined or arranged in parallel with nonconductive fiber clusters located between a number of loops of a nonconductive fiber texture, are entwined with a plurality of nonconductive fiber clusters perpendicular to the carbon fiber clusters so that the nonconductive fiber clusters are intertwined with each other to set adjacent carbon fiber clusters apart from each other across a gap. The gap between adjacent carbon fiber clusters is 3 to 10 mm, and at least the carbon fiber clusters are coated with ceramics. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention provides a facility that improves visibility and does not hinder the operation of transportation means at a feasible cost when fog occurs in public transportation means such as roads, airports, and harbors. It relates to the technology that can.

Fog is a phenomenon in which a large number of small water droplets having a diameter of about 10 to 40 μm are generated in the air and cannot be seen far away, causing traffic obstacles. In many cases, mist is generated when water vapor in the air adheres to very small dust having a diameter of 1 μm or less, but it is basically considered to be fine water droplets. Thus, the mist is mostly composed of moisture.
Although moisture is always present in the atmosphere, its amount and form vary depending on weather conditions. In other words, whether the form of moisture is water vapor, fine water droplets or ice crystals differs depending on factors such as atmospheric pressure, air temperature, airflow, turbulence, gravity, and air resistance.

However, these spatial densities have an upper limit corresponding to physical conditions. In the case of water vapor, the amount that can be saturated as water vapor on a flat surface at standard atmospheric pressure decreases depending on the temperature. For example, at 0 ℃ about 5 g / m ^3, a 30 ° C. At 30 g / m ^3, Exceeding these limit amount, the fine water droplets deposited solid particles and contaminated liquid droplets (mist) as nuclei. If this is in contact with the ground, it is a mist, and if it is far away, it is a fine water droplet called a cloud. Saturated water vapor condenses on the mist particles, or the mist particles collide and collide with each other, so that the mist particles expand and at the same time the visible light scattering rate also increases. However, the gravitational drop of the mist starts to be noticeable when the diameter of the mist exceeds 50 μm. In other words, the spatial density of fog that can float in the atmosphere has a limit amount, and the maximum amount of water is about 2 g / m ³ .

Conventionally, only the evaporation of fine water droplets has been considered as a countermeasure against fine water droplets, ie, fog, that obstructs the field of view of the atmosphere. A large amount of heat of vaporization is required to evaporate the water droplets. Even if the energy is assumed to be absorbed by the mist with an efficiency of 100%, heat of about 1.2 kcal (= 580 ca1 / g × 2 g / m ³ ) must be supplied per 1 m ^{3 of} atmospheric space. Moreover, the target space from which the mist is to be removed is not sealed, and new mist constantly flows in by the wind. Therefore, it is necessary to send energy continuously to the fog-resolving space. Therefore, in order to extinguish such actual moving fog, energy of wind speed (m / sec) × 1.2 kcal / m ³ must be constantly applied to the windward unit cross section of the target space.

For example, if a wind of 1 m / sec blows perpendicular to the expressway, assuming an example of instantly evaporating all the road fog with a required visual altitude of 3 m and a target distance of 10 km, 1.46 × 10 Heat of ⁵ kW (= 1 m / sec × 3 m × 10000 m × 580 cal / g × 2 g / m ³ × 4.2 joules / cal) is required. At this time, it is assumed that the fog that once disappeared is not regenerated while crossing a road up to about 30 m. Further, if this heat is transferred to water droplets via air, the heat capacity of air [0.0012 Joules / (m ³ · K)], heat diffusion [narrow region thermal diffusion coefficient in air 0.1 to 1.0 m ² / sec], heat conduction [air thermal conductivity coefficient 0.025W / (m · K)], etc., it is necessary to continuously supply heat several hundred times as large as 1.46 × 10 ⁵ kW. Must not. Therefore, large-scale attached facilities such as burners and piping are required. In addition, the phenomenon that heated high temperature / dry air rises to the road and rises to buoyancy, which is not practical.

The present inventors disclosed Patent Document 1 regarding this problem. This proposal is a fog detection monitor that monitors poor visibility due to fog, an electromagnetic wave oscillator that irradiates the fog with an electromagnetic wave based on the signal from the fog detection monitor, supplies power to the electromagnetic wave oscillator, and modulates the waveform of the electromagnetic wave The basic element of the fog eliminating apparatus which has a pulse modulation power supply to be shown is provided. This proposal is a pioneering and basic proposal.
In addition, an infrared radiator with a ceramic coating on a metal mesh heater is provided on the side of the road where the mist flows. The mist passes through the gap between the infrared radiators and radiates infrared rays from the closest distance to the flowing mist particles. Means for effectively eliminating fog are disclosed.

Further, Patent Document 2 discloses a technique for eliminating fog using a far-infrared radiator having a wavelength of 6 to 15 μm, preferably 5 to 25 μm. This proposal is a technology for intermittently installing a far-infrared radiator on the side of a road. Far-infrared rays emitted from a heating-type strong far-infrared radiator repeatedly crosses the road obliquely and is repeatedly reflected by the reflecting means, and the fog is eliminated by the scattered far-infrared rays.
JP 2001-288723 A JP 2002-030632 A

  Although the method of using far infrared rays that are harmless to humans and animals disclosed in the two preceding documents is preferable, the energy of electromagnetic waves including far infrared rays attenuates in inverse proportion to the square of the distance. Therefore, the energy of infrared rays radiated from a distant place is small, and effectiveness cannot be obtained unless an infrared radiation source is provided at a higher density. Patent Document 2 discloses an embodiment using a planar net, but this net is not provided with a heating means. In general, far-infrared radiation elements also do not emit sufficient far-infrared radiation at low temperatures where fog tends to occur. Effective fog elimination cannot be achieved unless far infrared rays are emitted from a close distance such as between meshes or stripes having a wide opening and heating means.

  In order to install a structure with a height of 3 to 5 m on the side of the road, it is necessary to be strong, light and resistant to wind and rain. If a solid planar structure is provided on the side of the fog-removing space, the mist flow is blocked and the so-called mist wraparound phenomenon occurs, and the mist flows in a complex direction from the top and side of the structure. Come on. In addition, heated metal nets and ceramics emit far infrared rays, but since the material itself is relatively heavy, there is a possibility that a great deal of cost may be required for construction of the structure. Therefore, it is necessary to improve the energy efficiency and improve the responsiveness and spread of the device.

  An object of the present invention is to solve the above-mentioned problems, and the configuration thereof is a mist detection monitor for monitoring poor visibility due to fog, and a net-like shape provided around the fog-dissolving space according to a signal from the mist detection monitor. An anti-fog device comprising a system for energizing and heating an infrared radiation source, wherein the infrared radiation source is entangled in parallel between multiple loops of a knitted fabric of non-conductive fiber bundles, or in parallel. A plurality of carbon fiber bundles arranged in the same manner, a plurality of non-conductive fiber bundles perpendicular to the carbon fiber bundles entangle the carbon fiber bundles, and the non-conductive fiber bundles are entangled with each other. The meshes are arranged at intervals that do not contact each other, the interval between adjacent carbon fibers is 3 to 10 mm, and a ceramic coating is applied to at least the carbon fiber bundle.

  The present invention using lightweight and tough carbon fiber as an infrared radiator eliminates fog by means that can be profitable for roads in areas where fog is likely to occur, enabling smooth operation of public transportation. To do. That is, according to the present invention in which the water droplet diameter is controlled to be equal to or less than a certain value, it is possible to avoid the scattering of visible light, and there is an advantage that it is possible to eliminate inefficiency simply by eliminating inefficient mere heating. The energy required for fog elimination can also be reduced to several tenths to several hundredths. By using the net of the present invention in which there is no mesh misalignment and the adjacent carbon fiber bundles are arranged at a set distance from each other, the fog of the means of transportation has been solved for the first time.

In other words, the present invention increases the energy efficiency by matching the wavelength of infrared rays to be emitted with the absorption wavelength of moisture. Examples of electromagnetic waves include γ rays <X rays <ultraviolet rays <visible rays <infrared rays <microwaves <radio waves, etc., in the order of shorter wavelengths. In the present invention, infrared rays that are gentle to humans and have a large heating effect are used. Infrared rays is a wavelength region of 0.75 to 1000 μm in electromagnetic waves, and among them, a wavelength band of 4 microns or more is called far infrared rays. If 10-20 micrometers in this wavelength range is converted into temperature, it will be 27 to 77 degreeC. That is, a mild electromagnetic wave emitted from a relatively low temperature radiator is infrared or far infrared.
According to the experiments by the present inventors, in the case of an infrared wavelength of 3 μm, the water absorption rate approaches 100%, but immediately decreases when it exceeds 3 μm, and when the wavelength is 6 to 7 μm or more, the absorption is stably close to 100%. . It was found that the film can be used almost stably up to about 50 μm, and preferably 25 μm or less.

The present invention has been completed by finding that infrared rays have an action of imparting kinetic energy to molecules having electric polarity (such as water molecules) and strengthening the motion by resonating the molecules. Water particles that have received infrared energy make the field of view transparent due to the self-splitting phenomenon.
Water is a compound of two hydrogens and one oxygen. However, in reality, it does not exist as a simple substance of H ₂ O, but a lot of H ₂ O molecules attract each other, and as shown in FIG. It is thought that This cluster 1 (water molecule conjugate) is split when energy smaller than the energy evaporated from the outside is applied. It has been found that when the size of the water droplet is reduced to some extent, it becomes transparent with respect to visible light, so that it does not scatter light without being completely vaporized to form one water molecule. FIG. 2 shows an image of the molecular structure of split cluster 2 that does not scatter visible light.

Infrared rays give water molecules only kinetic energy, and far infrared rays are known to have a heating effect. Infrared rays have the effect of resonating molecules and strengthening their motility, and this kinetic energy causes cluster splitting, so that fog does not scatter visible light.
Infrared rays are radiated to the foggy water droplets on the road, the energy is absorbed, and as the internal energy of the water droplets increases, the molecular motion partially balances the surface tension. Stabilizes by breaking into small water droplets.
According to the theory of meteorology and physics, water droplets do not become small except by evaporation. That is, it is considered that the surface of the water droplet does not break unless the water droplet becomes high temperature and a large amount of water vapor is formed inside. On the contrary, according to the knowledge of the present inventors, the split cluster 2 as shown in FIG. 2 that has drifted in space and received energy from the outside has no condensation of water vapor, or does not coalesce even when colliding, Stable with small diameter.

  The infrared emitting element used in the present invention is carbon fiber. Further, the ceramic coated on the surface of the carbon fiber bundle is heated together with the carbon fiber to emit more infrared rays. Carbon fiber is manufactured by firing organic materials such as acrylic fibers and pitch, and is a new material excellent in conductivity, high strength, and low specific gravity. In general, a general-purpose grade and a high-performance grade are roughly classified using a tensile strength and a tensile elastic modulus as parameters, but the general-purpose grade also has a tensile strength of 1000 MPa and a tensile elastic modulus of 100 GPa. Electrically conductive, chemically excellent in corrosion resistance, mechanically low specific gravity, specific strength, large specific elastic modulus, and low friction coefficient.

Carbon emits energy in the infrared region by generating heat. Moreover, far-infrared rays having a wavelength of about 10 to 20 μm are emitted by heating at about 27 to 77 ° C. An advantage of using carbon fiber as an infrared radiation source is that the electrical resistance can be designed freely by changing the volume occupancy (generally referred to as Vf) of the carbon fiber.
Carbon fibers are usually used by bundling a large number of fibers having a predetermined thickness. For example, there is a fiber bundle in which 2000 to 8000 fibers having a diameter of 7 to 10 μm are bundled. When 10,000 to 15,000 are bundled, flexibility is lost. However, flexibility can be obtained by selecting a binder resin or making the cross-sectional shape elliptical or flat.

  As the non-conductive fiber, plastic fiber such as polyester fiber, polyamide fiber, aramid fiber or inorganic fiber such as glass fiber is used. When producing these knitted fabrics and woven fabrics, the net of the present invention comprising knitted fabrics and woven fabrics capable of being heated by energization is obtained by entwining the carbon fiber bundles. If the opening is widened as a woven fabric, a plain weave causes misalignment, and an entangled weave is preferable. As shown in FIG. 3, the entangled weave is a plurality of carbon fiber bundles 3 arranged parallel to each other at intervals, and is entangled with a plurality of finer non-conductive fiber bundles 4 perpendicular to this. It is a fixed woven fabric. Between the adjacent carbon fiber bundles 3, the non-conductive fibers themselves are entangled to form a wide opening 5. Although the non-conductive fiber bundle 4 is expressed by a thick line, in reality, it may be a plurality of fiber bundles or more complicatedly entangled to prevent misalignment. In general, the carbon fiber bundles are woven while being inserted horizontally, but in the use of the present invention, the carbon fiber bundles may be longitudinal or transverse. By conducting an electric current through the carbon fiber bundle 3, a large amount of far infrared rays can be emitted.

The net of the present invention is preferably knitted fabric. A knitted fabric is distinguished from a woven fabric by forming a loop and no weft, and a woven fabric is distinguished from a knitted fabric by requiring a weft. The knitted fabric has a large number of loops regardless of whether it is a flat knitting or a warp knitting (Russell knitting).
Russell knitted fabrics are knitted fabrics that use only a large number of warp yarns and are widely used for industrial purposes such as fishing nets, agricultural nets, and civil engineering nets because they are not misaligned. The net of the present invention is a net having a sufficient number of openings 5 and an arrangement of carbon fiber bundles with openings 5 secured so that adjacent carbon fiber bundles do not contact each other. . The area ratio that the opening 5 occupies in the entire net is such that it does not interfere with the flow of natural fog, and is substantially 30% or more, preferably 40 to 50% or more.

  For example, in the case of a highway, a net made of knitted fabric or woven fabric having a wide opening can intermittently stand poles on the side of the road and suspend the net between the poles. Nets that are woven or knitted have a limited width. For example, when it is arranged on the side of an expressway or the like, several pieces cut to the required length can be connected vertically or horizontally to form a wide net. When connecting, the net can be stretched on a non-conductive frame such as plastic. The ends of the carbon fiber bundles may be connected to each other by applying conductive paint and / or pressing a belt-shaped metal fitting with the ends of one frame as electrodes and the upper ends of adjacent electrodes connected with each other with a conductive wire. preferable. When the carbon fiber bundles of the mesh are arranged vertically as shown in FIGS. 4 and 7, all the carbon fiber bundles in the longitudinal direction can be energized. When the carbon fiber bundles of the mesh are arranged horizontally, all the carbon fiber bundles in the lateral direction can be energized. In addition, when fog does not occur, the field of view can be expanded by storing the net on the lower surface or on the side of the pole.

  The far-infrared radiation device of the present invention is not heated so much as it is red hot like a general heater. 27-77 ° C. is sufficient to emit far infrared rays having a wavelength of 10-20 μm. Since the far infrared rays generated are also weak, they are about 3 to 4 mm from the surface, and at most about 5 mm. The space | interval of the surface of a carbon fiber bundle and the surface of the carbon fiber bundle adjacent to this is 3-10 mm, Preferably it is 4-8 mm, More preferably, it is 5-6 mm. If this distance exceeds 10 mm, the mist is not sufficiently eliminated, and if it is less than 3 mm, the inflowing moving mist is cut off and a wraparound quotient is generated.

  Moreover, as shown in FIG. 4, the carbon fiber bundle 3 can also be knitted in the vertical direction in the net | network 12 which has the wide opening part 5 which consists of a nonelectroconductive fiber bundle at the space | interval which does not mutually contact. In FIG. 4, the non-conductive fiber bundle 4 and the opening 5 are represented by oblique lines. In the case of FIG. 4, on the cut end portion side of the upper end of the carbon fiber bundle 3, other well-known methods such as applying a conductive paint to the six carbon fiber bundles from the end, attaching a conductive plate-like body, etc. Using the method, an electrode 7b was obtained. In this way, six carbon fiber bundles were collectively used as an electrode 7. Further, three carbon fiber bundles 3 from both ends are connected together on the cut end side of the lower end to form an electrode 7a. From the electrode 7a onward, 36 carbon fiber bundles were gathered together as an electrode 7 in the same manner as the upper end, and the final end was made up of 3 warp yarns as an electrode 7.

When the carbon fiber bundle 3 and the electrode are arranged in this manner, the current conducted to the electrode 7a reaches the upper electrode 7b and reaches the electrode 7c through the carbon fiber bundle 3 from the electrode 7b. Further, the current reaching the electrode 7 c reaches the upper electrode 7 d through the carbon fiber bundle 3. In this way, finally, the electrode 7 is gathered together with the three warps at the lower end, and the power supply 6 is returned.
According to this method, the electrical wiring can be arranged only at the lower end, and maintenance management becomes easier. For ease of explanation in FIG. 4, six carbon fiber bundles and three at both ends of the lower end are connected to the electrode, but in reality, 15 to 50 pieces are used instead of six carbon fiber bundles. become.

  These carbon fiber nets can be continuously suspended beside a fog-free space such as an expressway. However, places such as roads in mountainous areas where winds containing a large amount of water climb up the mountain are frequent fog areas, and such fog flows almost in parallel along the roads. In such an area, as a method of enclosing the fog-resolving space, there is also a method of intermittently providing the network of the present invention in the shape of a transverse membrane just above the road. In this case, the lower end of the net is above the height of the cargo truck or the like. Alternatively, there is also a method of intermittently providing the net of the present invention on the side of the road, extending outward from the side surface of the fog eliminating space in a direction perpendicular or oblique to the side surface.

When a ceramic coating is applied to the net of the present invention, a larger amount of infrared rays is emitted. In this case, it may be knitted or woven using a carbon fiber bundle that has been previously coated with a ceramic coating, but a ceramic coating may be applied to the finished net itself.
The ceramic is not particularly limited, and silicon carbide, silicon oxide, alumina and the like are frequently used, and those containing a small amount of metal oxide, for example, lithium oxide, iron oxide, manganese dioxide, cobalt oxide, germanium oxide and the like are preferable. . As the zirconia-based ceramics, those obtained by blending and firing carbon powder or silicon powder with metal oxides can be used.

  As a power source for heating the net of the present invention, it is natural that a power source supplied from a general power company can be used. However, solar power generation is also effective in the case of a basin, and the use of natural energy such as wind power generation is preferable at the coast. Furthermore, in mountainous areas, self-generated energy generated by burning biomass, general waste, natural gas, oil, etc. using thinned wood can be stored in a capacitor, and can be used by switching to general power as needed in the event of fog. .

  The weather in the mountains is easy to change and many people have the experience of being covered with fog in an instant. In such a case, it is difficult to rapidly raise the carbon fiber bundle to a predetermined temperature only with the fog detection monitor in the fog-resolving space. Since the flow of mountain mist is almost constant depending on the land, it is preferable to install a second mist monitoring monitor upstream of the fog-resolving space. If the signal from the second mist monitoring monitor detects the upstream mist generation at an early stage and stretches the net or starts energization to activate the mist canceling device in advance, it will It is possible to quickly cope with the occurrence of dense fog.

Two acrylic square tubes of 1 m × 1 m × 1 m were used. The openings of the two rectangular cylinders were brought close to each other, and the carbon fiber bundles were fixed while sandwiching a knitted net while being entangled with a loop in parallel with a space between each other. The net 12 uses a flat carbon fiber bundle 3 having a major axis of about 7 mm made of about 12,000 carbon fibers as warp yarns, and a polyester fiber bundle having a diameter of about 1 mm is used to form a gap between the carbon fiber bundle and the carbon fiber bundle. It is a braided net kept at 5 mm. The area ratio of the opening 5 was about 40%. A ceramic coating was applied to the entire net. The ceramic was made to adhere particles by baking Al ₂ O ₃ and SiO ₂ containing about 3% of LiO ₂ as a glaze.
Fog was generated from one opening of the connected rectangular cylinders using a fog generator, and allowed to flow into the rectangular cylinders. This mist was a thick mist containing 6.32 g / m ³ of water, which is about three times the normal mist. The fog generated from the fog generator passed through the opening 5 of the net, which was an infrared radiation source, and moved to the other square cylinder.

A power of 200 W / m ² was applied to the infrared radiation source. The carbon fiber temperature at this time was 40 ° C., and the electric resistance between the electrodes of the infrared radiation source was 65Ω. When the fog state before and after passing through the net 12 was visually observed, the fog disappeared at a distance of several tens of cm in front of the net 12.
Moisture adheres to the net when exposed to dense fog. Moisture adhering to the carbon fiber bundle inhibits far-infrared radiation caused by weak power. When the mist has already entered the fog-resolving space, it is necessary to first apply 150 to 250 W / m ² of electric power to evaporate the moisture of the attached mist. After the evaporation of moisture, fog could be sufficiently eliminated with an electric power of 40 to 60 W / m ² .

Furthermore, the particle size distribution of fog and the amount of fog water used in the experiment are shown in Table 1. The particle size distribution of fog and the amount of fog water at a site 50 cm in front of the net were measured, and the particle size distribution of fog and the amount of fog water after passing through the net were measured. Further, this relationship is shown in a graph in FIG.
The larger the mist, the greater the rate of scattering visible light, but the shorter the floating time in the air. As is apparent from Table 1 and FIG. 5, it is understood that the large-diameter mist particles are split and transferred to smaller mist particles.

Separately, an experiment was conducted in the same manner as in Example 1 except that the mesh was not energized, and the particle size distribution of fog and the amount of fog water before and after passing the mesh were measured and shown in Table 2. Further, this relationship is shown in a graph in FIG.
As is apparent from Table 2 and FIG. 6, it is considered that large mist particles contacting the net are physically removed even if only the net does not conduct current. Furthermore, it is also considered that infrared rays emitted from low-temperature carbon fibers and ceramics are also involved without particularly heating.

  FIG. 7 is an explanatory diagram for experiments on a road. One unit of the fog eliminating device held by a pole (not shown) is shown. 8 is a non-conductive frame, and FRP was used as a material. The net used in Example 1 was stretched in the frame 8. Since the net had a width of 0.5 m, it was cut into a length of 3 m to obtain a 3 m × 4 m planar infrared emitter. If a wider carbon fiber net is obtained, use it. Can do. In this embodiment, eight frame bodies 8 are arranged in parallel to form one unit. As shown in FIG. 7, the cut portions of the carbon fiber bundles at the upper end and the lower end of the net in each frame body were integrated using a connection fitting and a conductive paint to form an electrode 7. The right end of the electrode 7u on the drawing and the left end of the electrode 7v in the drawing are connected by a conducting wire 9, the right end in the drawing of the electrode 7m and the left end of the electrode 7n in the drawing are connected by a conducting wire 9, and in the drawing of the electrode 7w The right end of the electrode 7x and the left end of the electrode 7x in the drawing are connected by a conductive wire 9, and the right end of the electrode 7y in the drawing and the left end of the electrode 7z in the drawing are connected by a conductive wire 9. The resistance of the frame 8 was 2.25Ω.

As is clear from FIG. 7 (the voltage regulator, the voltmeter, and the ammeter are not shown), the current of 12A from the power source 6 is electrode 7l → electrode 7u → electrode 7v → electrode 7m → electrode 7n → electrode 7w. → The flow flows through the electrode 7x, finally reaches the electrode 7y → the electrode 7z → the electrode 7e and returns to the power source 6. First, apply a current of 208 V (200 W / m ² ). Despite the dense surroundings, the fog on the road after passing through the net disappears and you can see up to 500m ahead. Thereafter, the electric power was reduced to 104 V (50 W / m ² ), but the fog in the fog-resolving space can be completely eliminated.
In FIG. 7, for the sake of explanation, a gap is provided between the frame 8 and the frame 8, but in reality, the frame 8 and the frame 8 are in close contact with each other.

Fog is eliminated in the same manner as in Example 3 except that the length of the carbon fiber net 12 is 5 m and four frames 8 are used as one unit. The resistance of the net 12 of 5 m × 0.5 m is 3.75Ω. The power consumption per unit ^{87V (50W / m 2) ~173V} (200W / m 2), it is possible to ensure the visibility of the front about 700 meters.

It is an image figure of the combined state of the water molecule of the cluster in fog. It is an image figure of the combined state of the water molecule of the split cluster. It is explanatory drawing which shows an example of an entanglement. It is a schematic diagram which shows an example of the electricity supply system of the net | network which braided the carbon fiber bundle. It is a graph showing the particle size distribution of fog and the amount of fog water before and after passing through a net. It is a graph showing the particle size distribution of fog and the amount of fog water before and after passing through a net that is not energized. It is explanatory drawing of the fog elimination apparatus provided in the road side surface.

Explanation of symbols

1 Cluster 2 Split Cluster 3 Carbon Fiber Bundle 4 Non-conductive Fiber Bundle 5 Opening 6 Power Supply 7 Electrode 8 Frame 9 Conductor 12 Network

Claims (8)

A fog canceling device comprising a fog detection monitor for monitoring poor visibility due to fog, and a system for energizing and heating a net-like infrared radiation source provided surrounding the fog-dissolving space according to a signal from the fog detection monitor. ,
The infrared radiation source is a mesh in which carbon fiber bundles are entangled and arranged in parallel with a knitted or woven fabric of non-conductive fiber bundles, and the area ratio occupied by openings of the meshes Is a mist eliminating apparatus characterized by being 30% or more. A net is characterized in that carbon fiber bundles are entangled in parallel between a number of loops of a knitted fabric using non-conductive fiber bundles, and adjacent carbon fiber bundles are arranged at intervals that do not contact each other. The fog eliminating apparatus according to claim 1. A net adjoins a plurality of carbon fiber bundles arranged in parallel, while a plurality of non-conductive fiber bundles perpendicular to the carbon fiber bundles entangle the carbon fiber bundles and entangle them with each other. 2. The fog eliminating device according to claim 1, wherein the defogging apparatus is a so-called entangled weave in which the next carbon fiber bundle is entangled while maintaining an interval at which the carbon fiber bundles do not contact each other. The fog eliminating device according to any one of claims 1 to 3, wherein a distance between one carbon fiber bundle of the net and another carbon fiber bundle adjacent thereto is 3 to 10 mm. The mist eliminating apparatus according to any one of claims 1 to 4, wherein a ceramic coating is applied to at least a carbon fiber bundle of the net. In addition to the monitoring monitor directly connected to the mist eliminating device, the second for activating the mist eliminating device provided in the fog eliminating space upstream of the mist flow unique to the terrain before the occurrence of fog. 6. A fog eliminating apparatus according to claim 1, wherein a fog monitoring monitor is installed. A circuit in which a power source supplied from a general electric power company and a power source obtained using natural energy or a power source obtained using private power generation energy are arranged in parallel so as to be switched as a power source of the infrared radiation device The mist eliminating apparatus according to claim 1, wherein the mist eliminating apparatus is provided. The mist eliminating apparatus according to any one of claims 1 to 7, wherein a net is stretched upstream of the fog eliminating space in a direction crossing the mist flow.