JP2009127226A - Snow melting system with means for dropping snow into heated swimming pool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To economically melt snow, accumulated in a tank, by a simple structure. <P>SOLUTION: This snow melting system presents a structure which destroys a bridge of the snow 3 by spraying high pressure warm water, supplied from a jet pump 5, on the bridge of the snow 3, formed on the sidewall and bulkhead 4 of a hopper 1, a sidewall of an upper section of a warm water tank 2, and the upper section of the warm water tank 2, when the snow 3 is dropped into the warm water tank 2 from the hopper 1. A radiant tube 6 is used to heat the warm water in the warm water tank 2, and compressed air supplied from an air compressor 7 is used to drive the jet pump 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a snow melting apparatus that uses a pump, a jet pump, or a heating partition wall to store hot water at the bottom of a tank, heat it using fuel, and destroy a bridge formed by snow thrown into the tank.

  In urban areas, snow on roads and sites can no longer flow into rivers, so it must be melted using fuel. In the past, snow was put into the tank and dropped into the hot water stored at the bottom to melt it. In this case, the snow does not fall by building a bridge at the top of the tank, so sprinkle steam or hot water on it. However, steam or hot water only pierces the snow, and the snow does not fall down.

  In addition, to heat the hot water in the tank, in the past, this hot water was often supplied directly to the boiler as the boiler water supply, but this caused impurities such as mud brought in by the snow to the boiler, and the boiler became dirty. Will burn out.

  The present invention aims to overcome this drawback, i.e. to destroy the snow bridge and to eliminate the dirt of the two boilers.

  The snow bridge may be sprayed with heated air or water on the side walls of the tank that supports it. However, when the snow falls into the warm water of the tank, the temperature of the hot water near the surface decreases, and the snow floats on the surface of the hot water without melting, so the snow piled on it builds a bridge, and the bridge remains until the floating snow melts completely There is a case. In this case, hot water must be sprayed onto the bridge to destroy the bridge. Since there is warm water at the bottom of the tank, it is recommended to use a special pump to spray water, but if you suck in warm water with a jet pump that uses compressed air as a drive medium and blow it out at high pressure, you do not need to use a special pump. I'll do it. The fountain of the jet pump is sprayed on the tank side wall and snow for the reasons described above. If you spray it on the snow, it will split and fall, so it will melt faster.

  The snow bridge may heat the side wall of the tank that supports the snow bridge using electricity, steam, or hot water. Steam must be newly made, and the hot water in the tank contaminates the pump, so the method using electric heat is simple. In order to destroy the above-mentioned bridge and drop snow without making it into a large mass, it is preferable to provide a partition wall and heat.

  To eliminate boiler contamination, it is better not to use hot water in the tank but to use an independent steam or hot water circulation circuit. In this case, a heat exchanger is used to heat the hot water in the tank. This device is somewhat complicated and expensive.

  If a radiant tube is used, a heat exchanger is unnecessary and the apparatus becomes simple. In this case, the heat transfer surface can be enlarged by appropriately adjusting the length of the tube. It is advisable to put the exhaust gas into warm water in the tank and fully utilize the heat of the exhaust gas.

To make it easier, use an underwater burner. In this case, the apparatus is simple because there is no heat transfer surface. However, the length of the flame needs to be shorter than the depth of hot water in the tank, and there is a restriction that it is difficult to supply fuel.
"Comparison with conventional equipment"
A snow melting device that stores hot water in the lower part of the tank, puts snow from above, and sprinkles it with steam or hot water does not melt the snow, but only makes a hole. An apparatus that puts hot water in the tank into the boiler and produces steam for melting snow or hot water will contaminate the boiler. Boilers and heat exchangers have independent circulation circuits, so there is no boiler contamination, but the structure is complex and expensive.

  On the other hand, the one using a special pump (sewage pump) or jet pump of the snow melting device of the present invention can break the snow bridge in the tank and drop the snow into the hot water at the bottom of the tank, and the heating partition wall Those that use can destroy snow bridges and drop snow into the warm water at the bottom of the tank.

  Those using the radiant tube of the present invention have a simple structure because a heat exchanger is unnecessary, and those using an underwater burner are further simplified because there is no tube.

  In the present invention, when warm water is stored in a tank and snow is dropped into it and melted, in order to prevent the snow from becoming a bridge, a large amount of warm water is sucked in by using a sewage pump, the pressure is increased, Injecting hot water into snow to eliminate the bridge, dividing the snow into an appropriate size and dropping it into the hot water pool, using a jet pump using air as the driving medium instead of the two sewage pumps, 3 There is a method in which the tank side wall and the divided partition wall are heated by electric heating, steam or indirect heating to eliminate the bridge, and the snow is divided into an appropriate size and dropped into the hot water pool. Both are effective snow melting methods. However, those using a sewage pump require a special pump and handle mud, sand, stones, etc. in the snow, and are likely to wear out or break down.

  When the radiant tube and the underwater burner of the present invention are used, the structure can be simplified, and the boiler can be prevented from being damaged by dirt like a conventional boiler that uses hot water in the tank directly for supplying water to the boiler. It is provided in hot water, the length of the tube is appropriately lengthened, and the heat efficiency of heating is increased by releasing the exhaust gas into the warm water. However, the radiant tube has a disadvantage that the heat efficiency is low because the exhaust gas is released into the atmosphere. This may be achieved by discharging the exhaust gas into the warm water of the pool like an underwater burner. The underwater burner has a restriction that the length of the flame is less than the depth of the hot water, and it is somewhat difficult to supply the fuel.

  The present invention relates to an apparatus for economically melting snow stored in a tank with a simple structure. Snow is easiest to melt in a heated pool, but the snow in the tank does not fall down by building a bridge. Therefore, in the present invention, hot water in the tank is sucked up by a jet pump using compressed air as a drive medium, and the pressure is increased and sprayed onto the side wall of the tank and snow to destroy the bridge. In order to heat the hot water in the tank, a radiant tube is preferably provided in the hot water. This is shown in FIG.

  FIG. 1 shows a snow melting apparatus in which a radiant tube is provided in hot water, and a large amount of high-pressure hot water is jetted onto a tank side wall and snow by a jet pump using air as a driving medium to eliminate a bridge.

  FIG. 2 shows a snow melting device in which a radiant tube is provided in hot water, and a tank side wall and a divided partition wall of a snow receiving part are electrically heated to eliminate a snow bridge.

The combination of hot water heating method and bridge destruction method is 1. 1. Steam or hot water boiler with heat exchanger + pump or jet pump 2. Steam or hot water boiler with heat exchanger + tank side wall and dividing partition heating Radiant tube + pump or pump or 4. 4. Radiant tube + tank side wall and split partition wall heating 5. Submersible burner + pump or jet pump Underwater burner + tank side wall and split partition heating. FIG. 1 shows a jet pump 3 and FIG.

  In urban areas, the snow on roads and sites cannot flow into rivers and must be melted using fuel. Therefore, a snow melting device was devised that puts snow into the tank and drops it into hot water stored at the bottom to melt it, but since snow does not fall by building a bridge in the tank, it was melted by sprinkling steam or hot water But with this, the snow is only pierced and does not fall down. Moreover, although the method of using hot water as the water supply of a boiler was employ | adopted for warming up warm water, there existed a fault that a boiler became dirty and damaged.

  In the present invention, in order to break the bridge, a jet pump is used instead of the two pumps in which hot water is sprayed to the tank side wall and snow with one pump. A method of heating the three tank side walls and the divided partition walls by electric heating or the like was used. However, those using a sewage pump may be dirty or damaged.

  In the present invention, a 1 radiant tube and a 2 underwater burner are used to heat the hot water in the tank.

  With these devices, snow melting is performed easily and reliably. In particular, bridge breakage using a jet pump is strong and has less dirt and failure, bridge breakage using a dividing partition is simple in structure, and warm water heating with a radiant tube is simple in structure.

  As described above, the snow melting device according to the present invention has a relatively simple structure, and it is reliable and effective. Air compressors for jet pumps, jet pumps, radiant tubes, etc. are highly durable because they have little dirt or can be easily cleaned. For this reason, it is thought that industrial applicability is large.

In one embodiment of the present invention, when snow 3 is dropped from the hopper 1 into the hot water tank 2, a jet pump is provided on the side wall / partition wall 4 of the hopper 1, the side wall of the upper part of the hot water tank 2 and the bridge of the snow 3 generated on the upper part of the hot water tank 2. The structure which sprays the high-pressure hot water supplied from 5 and destroys the bridge of snow 3 is shown. A radiant tube 6 is used to heat the hot water in the hot water tank 2, and compressed air supplied from an air compressor 7 is used to drive the jet pump 5. In another embodiment of the present invention, when snow 3 is dropped from the hopper 1 into the hot water tank 2, the snow 3 is removed by the heater 8 provided on the side wall / partition wall 4 of the hopper 1 and the upper side wall / partition 4 of the hot water tank 2. The structure that destroys the bridge is shown. A radiant tube 7 is used to heat the hot water in the hot water tank 2, and electricity is sent to the electric heater 8 from the power source 9.

Explanation of symbols

1. Hopper 2. 2. Hot water tank Snow 4. Septum 5. 6. Jet pump Radiant tube 7. Air compressor8. Electric heater 9. Power supply

Claims (3)

  Stores snow on the tank, stores hot water made by installing a radiant tube or underwater burner at the bottom of the tank, and pumps this hot water onto the tank side walls and other locations that serve as scaffolding for the snow bridge Snow melting equipment.   Store the snow on the tank, store the hot water made by installing a radiant tube or underwater burner at the bottom of the tank, and use the air as a driving medium to inject this hot water onto the tank side walls and other places that serve as a scaffold for the snow bridge Snow melting equipment characterized by   Hot water made by installing a radiant tube or underwater burner at the bottom of the tank is stored, a partition wall is provided on the tank, snow is stored between the partition walls, and the partition wall and the tank side wall are electrically heated or indirectly steamed or A snow melting device that heats with hot water and melts the snow in contact with the partition wall into the lower warm water.