• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The snow melting apparatus comprises a melting tank (10) for melting snow, the melting tank having a bottom (12) and a wall, first melting means for melting snow in the melting tank into melting water, second melting means for heating the melting water and The wall of the melting tank has a front wall (14) and a rear wall (16) at opposite ends of the melting tank and two opposite side walls, said at least one mixing means being arranged in the front wall, rear wall and / or side walls at a distance from the bottom and the opposite wall. The flow of melt water provided by the mixing means causes the snow clumps floating in the melt water to move inside the melt tank, whereby the heated melt water melts them more efficiently.
    公开号:FI20205349A1
    申请号:FI20205349
    申请日:2020-04-03
    公开日:2021-07-15
    发明作者:Pekka Purola
    申请人:Lumipower Oy；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION The invention relates to a snow melting apparatus comprising a melting tank for melted snow, the melting tank having a bottom and a wall, first melting means for melting one mixing means for circulating the melt water inside the melt tank. - State of the art Snow in winter makes it difficult to navigate streets and roads as well as courtyards. To enable movement, snow is plowed from traffic areas and stored on small yards. In densely built-up areas, such as cities and residential suburbs, there is often no storage space for snow, which means that the snow has to be transported - by truck to separate snow dumps. The transport distance from the snow collection site to the snow removal site is typically several kilometers. Transporting snow incurs transport costs and emissions that are harmful to the climate. In addition, snow trucks slow down other traffic. Snow masses collected from traffic areas contain contaminants that travel with the melting water of the snow as such - into water bodies. One way to reduce snow transportation costs is to melt the snow into water, which is discharged into a rainwater drain after cleaning. F1123033 B and F120145732 describe equipment for melting snow. The equipment comprises a thermally insulated tank into which the melted snow is transferred. Inside the tank there are pipes, N 25 - in which the flowing water is heated by a heat exchanger N connected to the district heating network, whereby the snow in the tank melts into water. Equipment of the same type is disclosed in CA 2684863 and US 2008/0178866. In US S 2008/0178866, the inner surfaces of the tank walls have tubes by means of which warm = water is sprayed on the unmelted snow to enhance the melting. Em. The problem with> 30 installations is that the snow in the tank easily remains in the water 3 as large lumps floating on the surface of the water, melting slowly.
    WO2012 / 011476 A1 describes a snow melting device with a snow melting tank. Inside the defrost tank, there are several rotating shafts with vanes to enhance the melting of snow in the tank. Water or steam can be fed into the tank via pipes.
    In this solution, the shafts extend inside the melting tank from the first end of the tank to the second end of the tank, whereby their space requirement is high.
    US 2005/0121547 describes a snow and ice melting device in which the bottom of the melting tank has a rotating rotor-stator device for crushing snow clumps in the melting tank.
    The rotor-stator device is not able to crush snow clumps floating on the surface of the water in the melt tank outside the reach of the rotor-stator.
    U.S. Pat. No. 8,640,687 describes a snow melting system comprising a melting tank and a funnel for receiving snow.
    There is a hole in the bottom of the funnel through which - the snow transferred to the funnel flows into the cylindrical inlet chamber below the funnel.
    The inlet chamber is in a vertical position at the bottom of the defrost tank.
    Inside the inlet chamber is a vane pump that forces water flowing out of the funnel and snow to flow down towards the bottom of the inlet chamber.
    In this solution, any stones or other hard objects that may be carried by the snow can damage the vane pump.
    It is an object of the invention to provide a snow melting apparatus with which the drawbacks associated with the prior art can be eliminated.
    The objects of the invention are achieved by a snow melting apparatus characterized by what is set out in the independent claim.
    Some - preferred embodiments of the invention are set out in the dependent claims.
    SUMMARY OF THE INVENTION The snow melting apparatus according to the invention comprises a melting tank S for melting snow, the melting tank having a bottom and a wall, first melting means N for melting snow in the melting tank into melting water, second melting means for heating one mixing means I for circulating the melt water inside the melt tank.
    The wall of the melting tank has a front wall and a rear wall at opposite ends and two opposite side walls of the melting tank 3 and said at least one S30 mixing means are arranged in the front wall, the rear wall and / or the side walls at a distance S from the bottom and opposite the wall.
    The flow of melt water provided by the mixing means causes the snow clumps floating in the melt water to move inside the melt tank, whereby the heated melt water melts them more efficiently.
    In a preferred embodiment of the snow melting apparatus according to the invention, said mixing means comprise a feed pipe, a rotatable shaft having an outer surface and a propeller arranged on the shaft for causing melt water to flow through the feed pipe. Preferably, the propeller and at least a portion of the shaft are within the feed tube. In another preferred embodiment of the snow melting apparatus according to the invention, the feed tube has a first end of . Preferably, the supply pipe has a wall, the wall having an inlet for the flow of melt water, which inlet is in the vicinity of the first end of the supply pipe. The melt water then flows through the inlet into the supply pipes and leaves the other end of the supply pipe towards the wall of the melt tank. The flow of melt water through the feed pipe is provided by the rotational movement of the propeller.
    In yet another preferred embodiment of the snow melting apparatus according to the invention, there is a flow channel inside the shaft for supplying heated melt water to a melting tank, the flow channel having at least one flow hole opening into the outer surface of the shaft. Alternatively or in addition, there may be an air passage inside the shaft for conducting compressed air to the melting tank, the air passage having at least one air hole opening into the outer surface of the shaft. Preferably, the shaft has a first end pointing towards the wall of the melting tank, preferably the rear wall, and at least one flow hole and / or air hole is at the first end of the shaft.
    Yet another preferred embodiment of the snow melting apparatus according to the invention comprises a conveyor having an inner portion S 25 inside the melting tank with a first end and an outer portion outside the melting tank with a second N end. The rear wall of the defrost tank has an outlet for the conveyor to pass through. 3 Preferably, the inner part of the conveyor is close to the bottom of the melting tank and the first end of the conveyor 2 extends close to the front wall. Heavier impurities in the snow to be melted, such as sandblasting, settle to the bottom of the melting tank = 30 le, whereby the running conveyor transfers them along the bottom to the outside of the melting tank. The movement of the melt water inside the melt tank caused by the conveyor promotes the mixing of the S snow clumps with the melt water.
    In yet another preferred embodiment of the snow melting apparatus according to the invention, said first melting means comprise an initial melting tube at the bottom of the melting tank and said second melting means comprise post-melting tubes arranged in the wall of the melting tank with nozzles for injecting heated melt water. The nozzles are directed to spray heated melt water into the center of the melt tank. Preferably, the after-melt pipes are arranged in the side walls of the melt tank.
    Yet another preferred embodiment of the snow melting apparatus according to the invention further comprises a heating device for heating the melting water. Preferably, said heating device is a heat exchanger to be connected to the district heating network. The heat exchanger can be connected to the return pipe of the district heating network, whereby the heating of the melt water can be done with low-cost energy.
    A further preferred embodiment of the snow melting apparatus according to the invention further comprises circulation tubes, the circulation tubes having a first end opening into the melting tank and a second end leading to the heating device. The melt water is passed along circulating pipes to a heating device where it is heated to an elevated temperature. The heated melt water is led back to the melt tank via the after-melt pipes and the flow channel.
    The advantage of the invention is that it is able to melt a large amount of snow in a short time.
    In addition, the invention has the advantage that the equipment is durable and reliable, because the most sensitive parts of the equipment are not located in the path of the snow to be tipped into the melting tank of the equipment.
    A particular advantage of one embodiment of the invention is that it provides a cost-effective alternative to melting snow in the district heating network area. Snow treatment and drainage of melt water can be done with the help of ready-made infrastructure and municipal technology.
    N 3 25 Brief description of the drawings
    O 7 In the following, the invention is described in detail. In the description, reference is made to the accompanying drawings, in which Fig. 1 shows by way of example a snow melting device according to the invention, seen from above, O
    Fig. 2a shows by way of example the apparatus shown in Fig. 1 in a longitudinal cross-sectional view,
    Fig. 2b - shows the apparatus shown in Fig. 1 in a cross-sectional view, Fig. 2c - shows by way of example the mixing means belonging to the apparatus shown in Fig. 2a in a longitudinal cross-sectional view and Fig. 3 - shows the apparatus according to the invention in a simplified diagram. 5 - DETAILED DESCRIPTION OF THE INVENTION Figure 1 shows by way of example an apparatus according to the invention seen from above. The apparatus comprises a box-shaped melting tank 10 made of steel, preferably stainless steel, with a watertight wall. The wall comprises a base 12, a front wall 14 and a rear wall 16, and first and second side walls 13, 15. The free edges of the front and rear walls and the side walls define an opening through which snow can be transferred inside the melting tank. The melting tank further includes an openable lid 22 attached to one side wall at one edge. The lid can be turned to a closed position in which it substantially completely covers the opening delimited by the free edges of the front and rear walls and side walls, and to an open position in which it has moved away from the front of the said opening. The bottom, front and rear walls, side walls and / or cover may have a thermal insulation layer made of, for example, polystyrene or polyurethane. The size of the defrost tank can be suitably selected according to the amount of snow to be treated. The size of the melting tank of the mobile equipment shown in Figure 1 may be, for example, 25 m . - At the first end of the defrost tank, on the other side of the front wall 14, there is a technical space 38. The technical space is a closed space with double doors opening to the end of the equipment.
    40. Inside the technical space there is a heat exchanger 35, a circulating water pump 31 and a pump 33 for circulating melt water. The power of the heat exchanger can be selected on the basis of the melting capacity required of the equipment. It can be computationally estimated that in order to melt 1000 kg of snow mass per hour, a melting <Q ho of about 90 kW is required. In this case, the equipment comprising a 25 m3 melting tank may have a heat exchanger with a power of, for example, 500 kW. The heat exchanger 35 has an inlet connection 42 and a return connection 44 for connection to the district heating network piping so that hot water flows from the district heating network through the inlet connection 3 30 into the heat exchanger and cooled water flows through the return connection back to the district heating network. The state of the art further includes adjustment and control means 46 for controlling the operation of the circulating water pump 31, the pump 33 and the heat exchanger 35. The snow melting apparatus further includes a conveyor 28 having a first portion within the melting tank 10 and a second portion outside the melting tank. Defrosting
    the rear wall 16 of the tube has an outlet 30 through which the conveyor passes.
    The snowmelt equipment is built in the form of a mobile container.
    Fig. 2a shows by way of example the apparatus shown in Fig. 1 in a longitudinal cross-sectional view, and Fig. 2b shows a cross-sectional view at the section plane A-A.
    In the following, both images will be described simultaneously.
    The lower part of the melting tank 10 has a stainless steel initial melting tube 34, the ends of which pass through the first and second side walls to the sides of the melting tank and further into the technical space 38. Inside the melting tank, the initial are connected to the heat exchanger 35 so that the initial defrost tube forms a closed initial defrost circuit passing through the heat exchanger 35, in which the water is circulated by means of a circulating water pump 31 (Fig. 1).
    The initial defrost tube forms the first defrosting means for melting the snow transferred to the defrost tank into melt water.
    There may be an electrically operated heating cable inside the priming tube to prevent water from freezing inside the priming tube during equipment outages (the heating cable is not shown in the figures). In addition, there are other melting means inside the melting tank, which raise the temperature of the melting water and lead the heated melting water to the still unmelted snow in the melting tank.
    The second defrosting means comprise circulating tubes 37, the first ends of which open into the defrosting tank and the second ends are connected via a manifold to a heat exchanger 35 (the manifold is not shown in the figures). The collector pipe passes through a heat exchanger, whereby the temperature of the melt water flowing along it rises.
    The heated melt water exits the heat exchanger to a manifold, N from which a number of after-melt pipes 32 branch (the manifold is not shown in the figures). x Post-defrost pipes are straight pipes located inside the defrost tank on the first and second side walls.
    The section I between the circulation pipes and the after-melting pipes has a pump 33 (Fig. 1) for pumping melt water from the lower part of the melting tank and the collecting pipe to the heat exchanger and from the heat exchanger 3 through the manifold and after-melting pipes back to the melting tank.
    The pumping capacity of pump S can be of the order of 22 m3 / h.
    The snow melting apparatus shown in the figures has two circulating tubes 37 on each long side of the melting tank and two circulating tubes at the front end of the melting tank.
    The ends of the circulating tubes on the sides of the melting tank open into the side walls 13, 15 of the melting tank and the circulating tubes at the front end of the melting tank open into the front wall 14 near the bottom 12 of the melting tank.
    Mounted on the side walls of the melting tank, the after-melting pipes have nozzles 36 spaced apart from each other, which direct a jet of heated melt water towards the central part in the melting tank.
    When using a snow melting device, there is snow to be melted inside the melting tank, whereby the heated melting water jet coming through the nozzles is directed towards the snow to be melted.
    The front wall 14 of the melting tank has mixing means by means of which the melting water inside the melting tank and the snow and ice floats floating therein are moved inside the melting tank 10.
    The mixing means comprises a feed tube 18 whose imaginary central axis is substantially parallel to the direction of the bottom, i.e. it is substantially horizontal when the melting apparatus is in its operating position on a substantially horizontal base.
    The structure of the mixing means will be described in more detail in connection with the description of Figure 2c.
    The snow melting apparatus further includes a conveyor 28 having an inner portion inside the melting tank 10 and an outer portion outside the melting tank.
    The first end of the inner portion of the conveyor extends almost to the front wall 14. The obliquely rising outer portion of the conveyor begins at one end of the bottom inner portion and rises through the outlet 30 in the second end wall 16 to the outside of the melting tank.
    The other end of the conveyor is outside the melting tank at the height of the upper edge of the melting tank wall.
    The outer surface of the second end wall 16 has a waterproof protective trough 52 surrounding the outer portion of the conveyor. substantially perpendicular to the base 12.
    The distance between the lower parts of the side walls is equal to S 25 as the distance between the opposite side walls of the protective trough and less than the distance between the upper parts of the N side walls.
    The first chain is arranged inside the melting tank next to the lower part of the first side wall 13 and the second chain is arranged next to the lower part of the second side wall 15.
    The lower parts of the side walls and the side walls of the guardrail I have rails (not shown) along which the chains run.
    The chains are = 30 - connected to each other by beams 56 transverse to the longitudinal direction of the conveyor. 3 The mutual distance between the beams is approx. 50 cm.
    In connection with the end roller at the other end S of the conveyor, there is a motor for rotating the end roller.
    As the roller rotates, the chains rotate around the end rollers so that the upper part of the chain moves towards the front wall 14 and the lower part of the chain moves away from the front wall.
    The conveyor is mounted on the side walls so that as the chains rotate, the beams attached to the chains, moving away from the front wall, run very close to the bottom of the melting tank, pushing heavier water accumulated on the bottom along the inclined wall surface towards the other end of the conveyor.
    The initial defrost tube 34 is within the defrost tank 10 near the base 12 so that the conveyor beams 56 move toward the front wall as they pass above the initial defrost tube and away from the front wall as they pass below the initial defrost tube.
    Between the upper and lower parts of the side walls there is a central part which is inclined in position to the upper and lower part of these.
    The sloping central portions of the side walls of the melt tank direct heavier contaminants in the snow to be melted, such as sandblasting, to the bottom of the melt tank, from where they travel outside the melt tank as the conveyor rotates.
    The width of the conveyor is dimensioned so that the beams extend from the lower part of the first side wall to the lower part of the second side wall.
    Each side wall 13,15 of the melting tank has an overflow pipe 48 in a position substantially perpendicular to the base 12, the upper end of which opens inside the melting tank.
    The oblique central parts of the side walls have recesses 64 in which the overflow pipes are placed.
    The overflow pipes are connected at their lower end to an outlet pipe 62 outside the melting tank (Figure 2b). The first end of the overflow pipe is located at a distance from the bottom 12 of the melting tank, leaving a watertight water space for the melting water of the snow in the lower part of the melting tank.
    The distance of the first end of the overflow pipe can be selected, depending on the desired water volume for the melt tank.
    The distance of the first end of the overflow pipe from the bottom can be, for example, 100 cm, whereby the water volume is 9-10. When the surface of the melt water rises to the level of the first end of the overflow pipe, the melt water can flow along the overflow pipe out of the melt tank into the outlet pipe.
    The end of the drain pipe is intended to be connected to a rainwater drain.
    Around the first end of the overflow pipe there is a protective frame 50 open at the bottom, which prevents snow floating on the surface of the melt water and leaves access to the overflow pipe. x Figure 2c shows by way of example the mixing means included in the snow melting apparatus 2 according to the invention in a longitudinal cross-sectional view.
    The melting means I comprises a supply pipe 18 fixed at its first end = 30 - to the front wall 14 of the melting tank so that the imaginary central axis of the supply pipe is 3 substantially perpendicular to the plane of the front wall.
    The feed pipe is shown in the figure S in a longitudinally split cross-sectional view.
    The other S end of the supply pipe is open and points towards the rear wall of the defrost tank.
    The distance of the central axis of the supply pipe from the bottom of the mixing tank can be 500-600 mm.
    The diameter of the supply pipe can be 15-50 cm, preferably 20-30 cm.
    The length of the supply pipe can be 25-60 cm,
    preferably 30-50 cm. The wall of the first end of the supply pipe has an inlet 19 through which melt water can flow into the supply pipe. Inside the supply pipe there is a shaft 20, the longitudinal direction of which is substantially the same as the direction of the central axis of the supply pipe 18. The shaft has a first end facing the rear wall of the melting tank and a second end extending through a hole in the front wall and extending into the technical space 38. At the other end is a motor (not shown) which rotates the shaft. The outer surface of the shaft has a propeller 21 with four blades. The propeller blades are oriented - so that rotation of the shaft causes a propeller attached to it to form a flow into the supply pipe which pushes the melt water in the supply pipe through the open other end of the supply pipe out of the supply pipe. In place of the melt water leaving the supply pipe, melt water flows inside the supply pipe through the inlet. The rotating propeller thus generates a flow of melting water inside the melting tank from the feed pipe towards the rear wall of the melting tank, which mixes the melting water with the snowflakes floating in the melting water. Inside the shaft there is a flow channel 24, the first end of which opens through the flow holes 25 at the first end of the shaft to the outer surface of the shaft. The other end of the flow channel opens through the other end of the shaft to the technical space, where it - connects to a pipe from the heat exchanger supplying heated melt water, not shown in the figure. When using the equipment, the heated melt water is pumped from the heat exchanger to the flow channel, from where it discharges through the flow holes into the supply pipe and mixes with the melt water flow formed by the rotating propeller, raising the flow temperature. The elevated temperature of the melt water flow facilitates the melting of the snow clumps that hit the flow.
    N N Inside the shaft there is further an air duct 26, the first end of which opens through the air holes 27 in the first end of the shaft x to the outer surface of the shaft. The other end of the air duct 2 opens through the other end of the shaft to the technical space, where it connects to the compressed air pipe coming from the compressor. (compressor and compressed air pipes = = 30 - not shown). When using the equipment, compressed air can be led to 3 air duct channels, from where it discharges through air hole holes into the supply pipe and S mixes with the melt water flow formed by the rotating propeller. The compressed air S causes the melt water flow to effervesce, which is believed to contribute to the disintegration of the snow clumps hitting the flow into smaller parts. the mucus is not a necessary part of the mixing means, but the mixing equipment can also be implemented without it.
    Figure 3 shows an apparatus according to the invention in a simplified diagrammatic view. The apparatus is designed to be connected to the district heating network so that the water of the district heating network is led to flow through the inlet connection 42 into the heat exchanger 35 and through the return connection 46 cooled out of the heat exchanger. The water in the district heating network cools down to approx. 20 * C as it flows through the equipment. The initial defrost pipe 34 forms a closed initial defrost circuit passing through the heat exchanger 35, in which water is circulated by means of a circulating water pump 31. The water passing through the initial melting circuit is heated in the heat exchanger to a suitable initial melting temperature. The melt water melted by the initial melting pipe is pumped by the pump 33 along the circulation pipes 37 and the collector pipe to the heat exchanger, where its temperature rises. The heated melt water is passed through a manifold to the after-melt pipes 32 and the flow channel 24, along which the melt water is returned to the melt tank 10. The melt water is heated in a heat exchanger to a temperature of 20-30 ° C. The heated melt water is passed from the after-melt pipes through the nozzles as a water jet to the snow in the melt tank. Some of the heated melt water is led through a flow channel inside the shaft to a long supply pipe, where it mixes with the melt water flowing in the supply pipe. As the surface of the melt water rises to the height of the first end of the overflow pipe, the melt water begins to drain from the melt tank through the overflow pipe 48 to the outlet pipe and further to the rainwater drain.
    —The equipment according to the invention is transported to a suitable location in the area of the property along the district heating network. The location can be, for example, the yard of a housing association, an industrial plant or a commercial building. The equipment is then connected to the district heating network by connecting the equipment inlet 42 and the return connection 46 to the district heating network piping. Preferably, the inlet connection and the return connection are connected to the return pipe of the district heating network. The overflow pipe 48 of the equipment is connected to the rainwater drain by means of N connecting pipes and the equipment is connected to the electrical network. After this 5 the equipment is ready for use. The equipment is used during the winter, when it is raining snow to be removed in traffic areas. For summer time when there is no snow, the equipment 3 can be moved out of the property area.
    I E 30 - Precipitated snow is collected from the area to be cleaned with snow removal equipment and 3 transferred to the equipment's defrost tank 10. The equipment is used continuously for as long as there is enough snow to be defrosted. In continuous operation, new snow is continuously introduced into the melting tank so that the interior of the melting tank is substantially filled with snow and melting water. The melt water generated when the snow melts is continuously drained through an overflow pipe to the rainwater drain. When the snow to melt runs out, the
    to can be stopped and the melt water remaining in the melt tank is discharged to the rainwater drain via a drain valve. The equipment shown in the figures is arranged in the form of a container movable by a truck. Embodiments can also be built from the equipment in a fixed manner. The fixed installation may have a melting tank which can be at least partially immersed in the ground. The submersible melting tank may have a filling opening extending to the ground surface and closed by an openable lid. The hot water fed to the heat exchanger can be produced by any method or fuel, but the most economically advantageous result is often obtained when the thermal energy used to melt the snow is produced in a district heating plant. A particularly advantageous result is obtained when the district heating plant producing thermal energy is a back-pressure power plant suitable for cogeneration of electricity and heat, and the thermal energy is taken into the plant in the district heating network - from the return water flowing. Instead of and in addition to the heat exchanger, the snow melting equipment can be equipped with a burner burning solid, liquid or gaseous fuel, which produces the thermal energy needed to melt the snow. Such snow melting equipment can also be used outside the district heating network. Some preferred embodiments of the snow melting apparatus according to the invention have been described above. The invention is not limited to the solutions described above, but the inventive idea can be applied in various ways within the limits set by the claims. O OF O
    N <+ <Q O O
    I a a o + O LO O OF O OF
    Reference number list: - defrost tank 40 double doors 12 bottom 42 inlet connection 13 first side wall 46 return connection 14 front wall 48 — overflow pipe - second side wall 50 —protection frame 16 rear wall 52 —shield tray 18 - supply pipe 56 beam 19 —input opening 58 - end roller shaft 62 - chain 21 propeller 22 cover 64 recess 24 —flow duct - flow hole 26 air duct 27 —air hole 28 - conveyor outlet 31 - circulating water pump 32 — post-defrost pipe 33 pump 34 —the initial defrost pipe heat exchanger o 36 - nozzle S 37 - circulating pipe S 38 —technical mode O O
    I = o < O LO O OF O OF
    权利要求:
    Claims (14)
    [1]
    A snow melting plant comprising a melting tank (10) for snow to be melted, the melting tank having a bottom (12) and a wall structure, first melting means for melting the snow in the melting tank into melting water, second melting means for heating the melting water and for directing the heated melt water to the snow in the melt container to be melted, and at least one stirrer for agitating the melt water in the melt container (10), characterized in that the wall construction of the melt container (10) includes a front wall (14) and a rear wall (14). 16), which front wall (14) and rear wall (16) lie at opposite ends of the melting container, and two opposite side walls (13, 15), and said at least one stirrer is arranged in the front wall (14), the rear wall ( 16) and / or the side walls (13, 15), at a distance from the bottom (12) and the wall opposite to the wall where the stirrer is arranged, and said stirrer comprising a feed tube r (18), a rotatable shaft (20) having an outer surface, and a propeller (21) on the shaft (20) for causing the melt water to flow through the feed pipe (18).
    [2]
    Snow melting plant according to claim 1, characterized in that the propeller (21) and at least a part of the shaft (20) are inside the feed pipe (18).
    [3]
    Snow melting plant according to claim 1 or 2, characterized in that - the feed pipe (18) has a first end where the feed pipe (18) is attached to one of the walls of the melt container (10), preferably the front wall (14), and a second open end facing another of the walls of the melting container (10), preferably the rear wall (16).
    [4]
    Snow melting plant according to claim 3, characterized in that the feed pipe (18) has a wall, which wall is provided with an inlet opening (19) through which the melt water flows, which inlet opening (19) is located in the vicinity of the feed pipe. (18) first end.
    [5]
    Snow melting plant according to one of Claims 1 to 4, characterized in that inside the shaft (20) there is a flow channel (24) for directing the heated melt water> to the melting container (10), which flow channel (24) has at least a flow heel (25) which 3 opens out on the outer surface of the shaft (20).
    [6]
    Snow melting plant according to one of Claims 1 to 5, characterized in that inside the shaft (20) there is an air duct (26) for conducting compressed air to the melting container (10), which air duct (26) has at least one air heel (27) which opens onto the outer surface of the shaft (20).
    [7]
    Snow melting plant according to claim 6, characterized in that the shaft (20) has a first end directed towards one of the walls of the melting container (10), preferably the rear wall (16), and the at least one flow heel (25) and / or the air heel (26) is located in the first end of the shaft (20).
    [8]
    Snow melting plant according to any one of claims 1-7, characterized in that the plant comprises a conveyor (28) with an inner portion located inside the melting container (10) and having a first end and a second portion located outside the melting container ( 10) and having a second end, and the rear wall (16) is provided with an outlet opening (30) through which the conveyor slides backwards.
    [9]
    Snow melting plant according to claim 8, characterized in that the inner part of the conveyor (28) lies near the bottom of the melting container (10) and the first end of the conveyor (28) extends to the vicinity of the front wall (14).
    [10]
    Snow melting plant according to any one of claims 1-9, characterized in that said first melting means includes an initial melting pipe (34) on the bottom (12) of the melting container (10) and said second melting means includes post-melting pipes (32) in the wall construction of the melting tank (10) which are provided with nozzles (36) for spraying the heated melt water.
    [11]
    Snow melting plant according to Claim 10, characterized in that the post-melting pipes (32) are arranged in the side walls (13, 15) of the melting tank (10).
    [12]
    Snow melting plant according to one of Claims 1 to 11, characterized in that the plant also comprises a heater for heating the melt water.
    N N
    [13]
    Snow melting plant according to claim 12, characterized in that said g 25 heater is a heat exchanger (35) connectable to a district heating network.
    O 2
    [14]
    Snow melting plant according to claim 12 or 13, characterized in that the plant further comprises circulation pipes (37), which circulation pipes (37) have a first end which opens into the melting container (10) and a second end which is led D to the heater.
    S
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    同族专利:
    公开号 | 公开日
    EP3889358A1|2021-10-06|
    FI129100B|2021-07-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6736129B1|2001-03-12|2004-05-18|David G. Smith|Submerged combustion snow melting apparatus|
    US6971596B2|2003-12-05|2005-12-06|Monroe James C|Snow and/or ice liquefier|
    US20080178866A1|2007-01-30|2008-07-31|Trevor Davies|Snow melting system and method with direct-contact water heater|
    US7958656B2|2007-05-07|2011-06-14|Mark Soderberg|Portable or tow-behind snow melter|
    EP2260151A2|2008-02-21|2010-12-15|William R. Tucker|Enclosed snow melt system|
    FI123033B|2010-04-13|2012-10-15|Veijo Pitkaenen|Device and method for melting snow|
    JP4918610B2|2010-07-22|2012-04-18|有限会社アシスト|Stirring snow melting device|
    FI20205045A1|2014-08-20|2020-01-17|Lumipower Oy|Apparatus for processing snow|
    法律状态:
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    优先权:
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    FI20205349A|FI129100B|2020-04-03|2020-04-03|Snow melting device|FI20205349A| FI129100B|2020-04-03|2020-04-03|Snow melting device|
    EP21166492.5A| EP3889358A1|2020-04-03|2021-04-01|Snow melting equipment|
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