JP6026213B2 - Snow melting equipment - Google Patents

Description

  The present invention relates to a snow melting apparatus using high frequency induction heating.

  In snowy areas, snow may accumulate on roads, on the roofs of buildings, on sites, etc., resulting in obstacles to traffic and life. For this reason, a snow melting device that collects snow accumulated on a road or the like by a dump truck or the like and melts the collected snow may be used. As such a snow melting device, for example, as shown in Patent Document 1, there is a device that melts snow by spraying water from a plurality of water spray nozzles using snow or the like into the snow thrown into a snow melting tank.

Japanese Patent No. 3638666

  However, since the above-mentioned snow melting apparatus only melts snow by sprinkling groundwater or the like, there is a problem that a sufficient amount of snow cannot be melted and efficient snow melting cannot be performed. It was.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a snow melting device that can melt a sufficient amount of snow and perform efficient snow melting.

In order to achieve the above object, the snow melting device of the present invention comprises:
A heat medium tank for accommodating the heat medium;
A circulation pump for circulating the heat medium through a pipe;
An induction heating unit for heating the heat medium by high frequency induction heating;
A grid-like frame made of a plurality of steel materials having an upper flange, a lower flange, and a web, together with snow being thrown,
A first snow-melting pipe group that is provided along one direction through the through-hole formed in the web and through which the heat medium heated by the induction heating unit flows;
And a second snow melting pipe group provided along the upper surface of the upper flange in the other direction orthogonal to the one direction and through which the heat medium heated by the induction heating unit flows.

A water collecting pit that is provided below the frame and collects water melted by snow;
A pump for pumping up the water collected by the water collecting pit;
A heat exchanger that exchanges heat between the water pumped up by the pump and the heat medium to make hot water;
You may make it provide the watering apparatus provided above the said frame and watering the said warm water.

It has a container that can be placed on a gantry attached to the water collecting pit,
The container contains the heat medium tank, the circulation pump, the induction heating unit, and the heat exchanger.
The frame body may be detachably mounted and fixed to a frame body mounting portion provided above the water collecting pit.

  You may make it the said container which can accommodate the said frame removed from the said frame mounting part at the time of transfer in the said container.

  According to the present invention, it is possible to provide a snow melting device that can melt a sufficient amount of snow and perform efficient snow melting.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram showing schematic structure of the facility where the snow melting apparatus and snow melting apparatus which concern on embodiment of this invention were installed. It is explanatory drawing for demonstrating operation | movement of the induction heating part which the snow melting apparatus which concerns on embodiment of this invention has. It is explanatory drawing for demonstrating operation | movement of the heat exchanger which the snow melting apparatus which concerns on embodiment of this invention has. It is a partially-omission perspective view showing the structure of the frame body in which the snow-melting pipe group which the snow-melting apparatus which concerns on embodiment of this invention has was provided. FIG. 5 is a partially omitted perspective view illustrating a configuration of one of the two frames illustrated in FIG. 4. FIG. 5 is a partially omitted enlarged side view showing a configuration of a steel material and a snow melting pipe group included in the frame shown in FIG. 4. FIG. 5 is a partially omitted enlarged front view showing a configuration of a steel material and a snow melting pipe group included in the frame shown in FIG. 4. It is a partially abbreviated explanatory drawing for demonstrating the method to fix the frame provided with the snow-melting pipe group which the snow melting apparatus which concerns on embodiment of this invention was provided to a frame body mounting space. It is explanatory drawing for demonstrating schematic structure of the installation which installs the snow melting apparatus which concerns on embodiment of this invention.

A snow melting device according to an embodiment of the present invention will be described below with reference to the drawings.
The snow melting device according to the present embodiment is used by a transport vehicle such as a dump truck or a wheel loader in a snowy area or the like so that the snow accumulated on the road, the roof of the building, the site, etc. does not interfere with traffic and life. It is an apparatus that can collect and melt a large amount of collected snow using high frequency induction heating.

  The snow melting device 1 can be transported by storing it in the container A and the container B except for a part. As the containers A and B, for example, containers having a length of 20 feet defined by the ISO (International Organization for Standardization) standard are used.

  As shown in FIG. 1, the snow melting device 1 includes a heat medium tank 11, an induction heating unit 12, a generator 13, a high frequency oscillator 15 (shown in FIG. 2), a control panel 16, and water for watering. A heat exchanger 17 that heats the water, a frame 18 on which snow is thrown from the transport vehicle 3, a snow melting pipe group 20 that is provided on the frame 18 and melts snow, and is provided above the frame 18. And a sprinkler 21 for sprinkling hot water for sprinkling on the frame 18.

  An antifreeze heat medium is accommodated in the heat medium tank 11, and for example, industrial heat medium oil is used as the heat medium. The heat medium in the heat medium tank 11 is heated and flowed to the snow melting pipe group 20 to be used for melting snow in the frame 18, and is also flowed to the heat exchanger 17 to spray water for watering. Used to heat to warm water.

  The heat medium tank 11 includes a substantially cylindrical base portion 11a that is installed horizontally, and a cylindrical extension portion 11b that extends upward from the vicinity of the center of the base portion 11a. Stability is maintained by placing the base 11a in a horizontal position.

  The heat medium tank 11 is connected to the first circulation pump 22a, the second circulation pump 22b, and the third circulation pump 22c via a flexible hose (not shown). The first circulation pump 22 a causes the heat medium to flow out of the heat medium tank 11 through the flexible hose and the first heat medium pipe 23 a, pass through the induction heating unit 12, and circulate to the heat medium tank 11. Further, the second circulation pump 22b causes the heat medium to flow out of the heat medium tank 11 through the flexible hose and the second heat medium pipe 23b, and passes through the heat exchanger 17 and a cooling device 24 to be described later. Circulate to the medium tank 11.

  In addition, the third circulation pump 22c causes the heat medium to flow out of the heat medium tank 11 through the flexible hose and the third heat medium pipe 23c, and flows into the snow melting pipe group 20, and the fourth heat medium pipe 23d. It is made to circulate through the heat medium tank 11. The first circulation pump 22a, the second circulation pump 22b, and the third circulation pump 22c are explosion-proof pumps, and are supported by a vibration-proof stand.

  Note that an operation switching valve 25a including an electric valve is provided on the heat medium inflow side and the outflow side of the heat exchanger 17 in the second heat medium pipe 23b, and an electric valve is provided on the heat medium inflow side and the outflow side of the cooling device 24. An operation switching valve 25b is provided. Further, a flow rate adjusting valve 25c for adjusting the flow rate of the heat medium is provided on the heat medium outflow side of the third circulation pump 22c in the third heat medium pipe 23c. An air vent valve 25d and a switching valve 25e are provided on the heat medium outflow side of the snow melting pipe group 20 in the fourth heat medium pipe 23d.

  A heat medium recovery pump unit 22d for recovering the heat medium in the snow melting pipe group 20 when the snow melting device 1 is moved between the third heat medium pipe 23c and the fourth heat medium pipe 23d. Is provided. The heat medium recovery pump unit 22d includes a recovery pump 221d, a recovery tank 222d, a valve 223d, and a switch 224d. In order to recover the heat medium by the heat medium recovery pump unit 22d, the valve 223d and the switching valve 224d are opened, the recovery pump 221 is driven, and the heat medium in the snow melting pipe group 20 flows out to the recovery tank 222d. The heat medium recovery pump unit 22d is temporarily installed and can be removed, and can be stored in the container A or the container B.

  The heat medium tank 11 has a liquid level detection device 26. The liquid level detection device 26 includes a liquid level detection sensor (not shown), and warns when the heat medium in the heat medium tank 11 exceeds a predetermined amount or when the heat medium has decreased below the predetermined amount. Used for display. The cooling device 24 is a device for cooling the passed heat medium, and is used, for example, for cooling the heat medium after the snow melting work is completed. As the cooling device 24, for example, an air cooling type cooling device having an air cooling fan is used, and the passing heat medium can be cooled by driving the air cooling fan. A drain pan 27 for preventing the heat medium from leaking to the outside is laid under the heat medium tank 11. The heat medium tank 11 is installed in the container A via a gantry (not shown).

  The induction heating unit 12 heats the heat medium in the heat medium tank 11 by high frequency induction heating. The induction heating unit 12 includes a plurality of induction heaters 12a. As shown in FIG. 2, the induction heater 12a includes a cylinder 121a, a magnetic body (not shown) disposed in the cylinder 121a, and an induction coil 122a wound around the outer periphery of the cylinder 121a. A heat medium flows in the cylinder 121a.

  For the generator 13, for example, a diesel generator having an output of about 500 to 600 KW is used. The high frequency oscillator 15 converts the AC power supplied from the generator 13 into a high frequency and supplies it to the induction coil 122a. A matching transformer 38 is connected between the output of the high-frequency oscillator 15 and the induction coil 122a, and is used for impedance matching.

  When a high frequency induction current is supplied from the high frequency oscillator 15 to the induction coil 122a of the induction heating unit 12, the magnetic body in the cylindrical body 121a generates heat due to the high frequency induction heating. The heat medium flowing through the cylinder 121a is heated by coming into contact with the heat-generated magnetic material. The supply of the high frequency induction current to the induction coil 122a of the plurality of induction heaters 12a is sequentially performed by using a delay relay (not shown).

  As shown in FIG. 2, a temperature controller 40 is provided on the heat medium outflow side of the induction heating unit 12 in the first heat medium pipe 23a. The temperature controller 40 has a temperature sensor (not shown). When the temperature controller 40 detects that the heat medium is equal to or higher than a predetermined temperature by the temperature sensor, the high-frequency induced current of the high-frequency induction current to the induction coil 122a of the induction heating unit 12 is transmitted to the high-frequency oscillator 15 via the control unit 16a described later. Send a control signal to stop the supply.

  In addition, a constant flow valve 41 including an electric valve is provided between each induction heater 12a and the temperature controller 40 in the first heat medium pipe 23a. By restricting the flow rate of the heat medium flowing out from the induction heater 12a by the constant flow valve 41, temperature unevenness in the heat medium is prevented.

  The control panel 16 has a control unit 16a, and the control unit 16a controls the snow melting device 1 as a whole. The control unit 16a includes a generator 13, a high frequency oscillator 15, a matching transformer 38, a temperature controller 40, a constant flow valve 41, a first circulation pump 22a, a second circulation pump 22b, a third circulation pump 22c, and a recovery pump. 221d, operation switching valves 25a and 25b, flow rate adjusting valve 25c, cooling device 24, liquid level detecting device 26, pumping pump 22e, pressurizing pump 22f, temperature controller 47 and the like, which will be described later, and a CPU (not shown) for performing arithmetic processing (Central Processing Unit), a program for controlling them, and a memory (not shown) in which control information is stored. The high frequency oscillator 15 and the matching transformer 38 are installed in the control panel 16.

  Water for sprinkling is warm water and sprinkled from the water sprinkler 21 to the frame 18, so that the snow thrown into the frame 18 is melted as an auxiliary and the bridge phenomenon in the frame 18 is prevented. The watering device 21 has a group of watering nozzles 21 a arranged, and is provided above the frame body 18 so that warm water can be uniformly sprayed over the entire frame body 18. As water for watering, the water in the water collecting pit 50 made of waterproof concrete in which the water melted by the snow melting pipe group 20 and the watering device 21 is collected is mainly used. Note that water stored in the water spray tank 19 in advance is used as water for water spraying at the start stage of snow melting work in which the water melted in the water collecting pit 50 is not yet sufficiently stored. A drain pan 28 for preventing water from leaking into the container B is laid below the watering tank 19.

  The water collecting pit 50, the watering tank 19, the heat exchanger 17, and the watering device 21 are connected via a watering pipe 23e. In addition, the sprinkling pipe 23e heat-exchanges the pumping pump 22e for pumping water for sprinkling from the water collecting pit 50 to the watering tank 19 side and the water for watering pumped to the watering tank 19 side. A pressurizing pump 22f is provided to flow toward the vessel 17 and increase the water pressure.

  The heat exchanger 17 exchanges heat between the water for sprinkling and the heat medium to make the water for sprinkling warm. As the heat exchanger 17, for example, a multi-tubular cylindrical heat exchanger is used. As shown in FIG. 3, the heat exchanger 17 has a cylindrical body 17a and a plurality of heat transfer tubes 17b arranged in the body 17a. Water for sprinkling flows into the heat transfer tube 17b and a heat medium flows into the body 17a, so that heat is exchanged between the water for sprinkling and the heat medium. As a result, the water for sprinkling that has passed through the heat exchanger 17 is heated to become warm water, and flows out from the heat exchanger 17 as warm water. A temperature controller 47 is provided in the vicinity of the water outlet of the heat exchanger 17 for watering. The temperature regulator 47 has a temperature sensor (not shown). When the temperature controller 47 detects that the water for spraying is equal to or higher than a predetermined temperature by the temperature sensor, the temperature controller 47 stops the inflow of the heat medium to the heat exchanger 17 into the operation switching valve 25a via the control unit 16a. Send a control signal. The heat exchanger 17 has a water drain valve 25f that can drain the water in the heat exchanger 17.

  As shown in FIGS. 4 and 5, the frame 18 is constituted by two arranged frames 18 a and 18 b. The frames 18a and 18b are formed in a lattice shape by steel materials 181a and 181b made of a plurality of I-shaped steels or H-shaped steels. For example, a stainless steel material is used for the steel materials 181a and 181b. As shown in FIG. 6, the steel materials 181a and 181b are composed of upper flanges 182a and 182b, lower flanges 183a and 183b, and webs 184a and 184b. Each steel material 181a, 181b is provided with a rib 181c for reinforcement. In FIG. 4, for ease of understanding, the number of pipes of the snow melting pipe group 20 is reduced, and some descriptions of the frame body 18 a and the rib 181 c are omitted. Also, in FIG. 5, a part of the frame body 18b and the rib 181c is omitted for easy understanding.

  The snow melting pipe group 20 is provided on the frame 18, and a heat medium is passed through the snow melting pipe group 20. When the snow thrown from the transport vehicle 3 comes into contact with the snow melting pipe group 20, the contacted snow melts into water and is collected in the water collecting pit 50.

  The snow melting pipe group 20 includes a first snow melting pipe group 20a and a second snow melting pipe group 20b. The first snow melting pipe group 20a is juxtaposed in a direction orthogonal to the direction in which the heat medium flows, which is the longitudinal direction of the frames 18a, 18b. The first snow melting pipe group 20a is inserted into through holes 185a and 185b formed in the webs 184a and 184b of the frames 18a and 18b arranged side by side in the short direction.

  As shown in FIG. 5 and FIG. 6 and the like, the first snow melting pipe group 20a is disposed in a wave shape, and in each section surrounded by the steel materials 181a and 181b, it is near the center in the short direction of the frames 18a and 18b. The pipe is placed at a high position. As a result, it is possible to prevent snow from accumulating near the center of each section surrounded by the steel materials 181a and 181b.

  The second snow melting pipe group 20b is juxtaposed in the direction in which the heat medium, which is the short direction of the frames 18a, 18b, flows. That is, the second snow melting pipe group 20b is arranged in a direction orthogonal to the first snow melting pipe group 20a. Two second snow melting pipe groups 20b are provided along the upper surfaces of the upper flanges 182a and 182b of the frame bodies 18a and 18b arranged side by side in the lateral direction. As shown in FIGS. 6 and 7, the second snow melting pipe group 20b is fixed to the upper surfaces of the upper flanges 182a and 182b via the steel pipe 20c. The second snow melting pipe group 20b is fixed to the upper flanges 182a and 182b by screwing two nuts 20e into the J bolt 20d. The steel pipe 20c plays a role of buffering when the heat medium flows and the second snow melting pipe group 20b is thermally expanded.

  As shown in FIG. 4, the third heat medium pipe 23c includes a first snow-melting pipe group 20a, a second snow-melting pipe group 20b provided on the frame 18a, and a first provided on the frame 18b. In order to allow the heat medium to flow into the four snow-melting pipe groups of the snow-melting pipe group 20a and the second snow-melting pipe group 20b, it is branched into four. An open / close valve 25g is provided in each of the third heat medium pipes 23c branched into four. Similarly, a valve 223d of the heat medium recovery pump unit 22d is also provided in each of the third heat medium pipes 23c branched into four.

  The heat medium flowing out from the first snow-melting pipe group 20a and the second snow-melting pipe group 20b provided on the frame 18a flows into the fifth heat-medium piping 23f, and the first snow melting provided on the frame 18b. The heat medium flowing out from the pipe group 20a and the second snow melting pipe group 20b flows into the sixth heat medium pipe 23g. The fifth heat medium pipe 23f and the sixth heat medium pipe 23g are connected to the fourth heat medium pipe 23d, and the heat medium circulates to the heat medium tank 11 through the fourth heat medium pipe 23d. Is done.

  The snow melting device 1 can be moved by storing it in the container A and the container B except for a part, but the facility 60 for installing the transferred snow melting device 1 can be provided in various places. In addition, since the frame 18 and the water sprinkler 21 can also be removed, it can be transferred by being stored in the container A or the container B. As shown in FIG. 9, the facility 60 for installing the snow melting device 1 includes concrete mounts 60 </ b> A to 60 </ b> C, a water collecting pit 50 made of waterproof concrete, a frame mounting space 51, and a pumping pump mounting space 52. It is equipped and each is attached.

  The gantry 60A includes a heat medium tank 11, an induction heating unit 12, a heat exchanger 17, a liquid level detection device 26, a cooling device 24, a first circulation pump 22a, a second circulation pump 22b, and a third circulation pump 22c. Container A in which etc. are stored is placed. On the gantry 60B, a container B in which a control panel 16, a watering tank 19, a pressure pump 22f, a desk for an operator, a chair and the like are stored is placed. The generator 13 is fixed to the gantry 60C. In FIG. 1, the orientation in which the gantry 60 </ b> A to 60 </ b> C is arranged is changed for easy understanding.

  In the frame mounting space 51, the frame 18 provided with the snow melting pipe group 20 is mounted. As shown in FIG. 8, the lower flanges 183a and 183b of the frame body 18 are fixed to a projecting portion 51a formed on the wall surface 51g of the frame body mounting space 51 via a holding plate 51c with bolts 51b. A cover 51 d is provided on the wall surface 51 g so that snow does not fall between the wall surface 51 g of the frame body mounting space 51 and the frame body 18. A groove 51e is formed between the wall surface 51g of the frame mounting space 51 and the projecting portion 51a, and a water drain pipe 51f communicating with the groove 51e is provided. A pumping pump 22e is fixed in the pumping pump mounting space 52.

  The water collection pit 50 is provided in a range including the lower part of the frame body mounting space 51. In the water collecting pit 50, water melted by the snow melting pipe group 20 and the water sprinkler 21 is dropped and collected. The water collecting pit 50 is provided with a drain hole 50a, and when the water level exceeds a predetermined level, the collected water is drained to a river or the like.

  Here, a method for melting snow with the snow melting device 1 will be described. First, the transferred container A is placed on the gantry 60A, and the container B is placed on the gantry 60B. The frame 18 provided with the snow melting pipe group 20 and the watering device 21 are taken out from the container A or the container B, the frame 18 is fixed to the frame mounting space 51, and the watering device 21 is disposed above the frame 18. To do. Each piping and wiring are connected, and the installation of the snow melting apparatus 1 in the facility 60 is completed.

  After confirming that the heat medium tank 11, the generator 13, the control panel 16 and the like are in a horizontal state, the generator 13 is driven to secure electric power. Next, the operation switching valve 25a is opened, and the first circulation pump 22a, the second circulation pump 22b, and the third circulation pump 22c are driven.

  Accordingly, the heat medium in the heat medium tank 11 flows out through the first heat medium pipe 23 a and the like, passes through the induction heating unit 12, and circulates to the heat medium tank 11. Further, the heat medium in the heat medium tank 11 flows out through the third heat medium pipe 23c and the like, flows to the snow melting pipe group 20, and enters the heat medium tank 11 through the fourth heat medium pipe 23d. Circulate. Further, the heat medium in the heat medium tank 11 flows out through the second heat medium pipe 23 b and the like, passes through the body 17 a of the heat exchanger 17, and circulates to the heat medium tank 11.

  Next, the generator 13 supplies AC power to the high-frequency oscillator 15 based on a control signal from the control unit 16a. The AC power is converted into a high frequency by the high frequency oscillator 15 and supplied to the induction coil 122a of the induction heating unit 12. The heat medium flowing through the cylindrical body 121a of the induction heating unit 12 is heated by being in contact with the magnetic body that has generated heat by high frequency induction heating.

  The heated heat medium that has passed through the cylindrical body 121a of the first induction heating unit 12 is circulated to the heat medium tank 11, and the heat medium in the heat medium tank 11 is maintained at a desired temperature. The heat medium flowing through the snow melting pipe group 20 from the heat medium tank 11 is also maintained at a desired temperature. The temperature of the heat medium flowing through the snow melting pipe group 20 is about 100 ° C. to 200 ° C., and preferably about 150 ° C.

  Next, the pressurizing pump 22f is driven to pass the water for water stored in the watering tank 19 through the heat transfer pipe 17b of the heat exchanger 17 through the watering pipe 23e. Heat exchange is performed between the water passing through the heat transfer tube 17b of the heat exchanger 17 and the heated heat medium passing through the body 17a. Thereby, the water for watering becomes warm water, and is sprayed from the watering nozzle group 21a of the watering device 21 to the frame 18 through the watering pipe 23e.

  Next, snowfall on the frame 18 is started from the transport vehicle 3 that has collected snow on the road, on the roof of the building, on the site, and the like. The snow thrown onto the frame 18 is melted in contact with the snow melting pipe group 20 through which the heated heat medium flows. In addition, the snow thrown onto the frame 18 is melted by the application of hot water sprinkled from the watering nozzle group 21a of the watering device 21, thereby preventing the bridge phenomenon. The melted snow is collected in the water collecting pit 50.

  The heat medium gently flows through the first snow melting pipe group 20a and the second snow melting pipe group 20b. The efficiency of snow melting is improved by gently flowing the heat medium through the pipe. The flow rate of this heat medium is about 0.8 m / s to 1.2 m / s. The flow rate of the heat medium flowing in the first snow melting pipe group 20a and the second snow melting pipe group 20b is adjusted by controlling the inverter (not shown) and the constant flow valve 41 of the third circulation pump 22c by the control unit 16a. .

  Next, the pumping pump 22e is driven to pump the water from which the snow has melted from the water collecting pit 50 to the watering tank 19 side. The pumped water passes through the heat transfer pipe 17 b of the heat exchanger 17 through the sprinkling pipe 23 e to become warm water, and is sprinkled from the sprinkling nozzle group 21 a of the sprinkler 21. That is, the water whose snow has melted in the frame 18 is used for watering by the watering device 21. The temperature of the hot water sprayed is about 40 ° C to 45 ° C.

  When the snow melting work is finished, the cooling medium 24 cools the heat medium in the heat medium tank 11 to prevent danger. Thereafter, the heat medium is recovered from the snow melting pipe group 20 by the heat medium recovery pump unit 22 d, and the recovered heat medium is returned to the heat medium tank 11.

  In order to transfer the snow melting device 1 to another facility 60, the frame body 18 is removed from the frame body mounting space 51 and stored in the container A or container B together with the watering device 21. After removing each pipe and wiring, the container A and the container B may be dropped from the mounts 60A and 60B and transferred to another facility 60.

  As described above, in the snow melting device of the present embodiment, the heat medium heated using high-frequency induction heating that can obtain high-speed and high-temperature heating is caused to flow to the snow-melting pipe group 20, and the snow thrown into the frame 18 is melted. Since the pipe group 20 is contacted and melted, a sufficient amount of snow can be efficiently melted.

  Further, in the snow melting device of the present embodiment, hot water generated by heat exchange with a heat medium heated using high-frequency induction heating is applied to the snow thrown from the water sprinkler 21 to the frame 18. Therefore, the effect of melting snow can be further enhanced, and the bridge phenomenon in the frame 18 can be prevented.

  Further, in the snow melting device of the present embodiment, the water collected from the snow collected in the water collecting pit 50 is used, and the water is sprinkled from the water sprinkler 21 by using the water as warm water. be able to.

  Moreover, in the snow melting device of the present embodiment, since it can be transferred by storing in the container A and the container B except for a part, compared to a large snow melting device fixed in a predetermined place, The cost for melting snow can be reduced. Moreover, the facility 60 in which the snow melting apparatus 1 is installed can be reduced in size and standardized.

  While the present invention has been described with reference to the embodiment, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above-described embodiment, an example has been described in which a part of the snowmelt device can be transferred by being stored in the container A and the container B. However, the snow melting device can be used in a fixed position.

  Moreover, in the said embodiment, although the example which applies warm water to the snow which was snowed on the frame 18 from the water sprinkler 21 was demonstrated, when the amount of desired snow can be melt | dissolved only by the snow-melting pipe group 20. The watering from the watering device 21 is not necessarily required.

  Moreover, although the example provided with the two frame bodies 18a and the frame bodies 18b was demonstrated in the said embodiment, you may make it provide one frame body or three or more frame bodies. Moreover, although the frame 18 demonstrated the example which makes the direction orthogonal to the direction in which a heat carrier flows in a longitudinal direction, you may form so that the direction in which a heat medium flows in may become a longitudinal direction.

  Moreover, in the said embodiment, the 1st snow melting pipe group 20a is juxtaposed in the direction orthogonal to the direction in which a heat carrier flows in, and the 2nd snow melting pipe group 20b is juxtaposed in the direction in which a heat carrier flows in. Although the example has been described, conversely, the first snow melting pipe group 20a is juxtaposed in the direction in which the heat medium flows, and the second snow melting pipe group 20b is juxtaposed in the direction orthogonal to the direction in which the heat medium flows. You may make it do.

  In the above embodiment, an example in which the first snow melting pipe group 20a is disposed in a wave shape has been described. However, the first snow melting pipe group 20a is not necessarily disposed in a wave shape, and may be disposed in a linear shape, for example. Good. Further, the number of pipes constituting the first snow melting pipe group 20a and the second snow melting pipe group 20b can be changed as appropriate according to the situation such as the amount of snow.

  In the present invention, the shape, material, and the like of the magnetic body included in the induction heater 12a are not limited. For example, a plurality of heat generating coils wound in a spiral shape as a magnetic body may be used and inserted in the axial direction in the cylinder 121a, or a plate-like magnetic body having a plurality of holes formed therein may be used as a cylinder. You may make it arrange | position with the predetermined space | interval in the axial direction in the body 121a.

  In the above embodiment, an example using two containers A and B has been described. However, one container may be used, and in that case, the length of 40 feet defined by the ISO standard may be used. Container is used.

DESCRIPTION OF SYMBOLS 1 Snow melting apparatus 11 Heat medium tank 12 Induction heating part 12a Induction heater 121a Tubing body 122a Inductive coil 13 Generator 15 High frequency oscillator 16 Control panel 16a Control part 17 Heat exchanger 18 (18a, 18b) Frame body 181a, 181b Steel material 182a , 182b Upper flange 183a, 183b Lower flange 184a, 184b Web 185a, 185b Through hole 20 Snow melting pipe group 20a First snow melting pipe group 20b Second snow melting pipe group 21 Sprinkler 21a Sprinkling nozzle group 22a First circulation pump 22b Second circulation pump 22c Third circulation pump 22e Pumping pump 22f Pressure pump 23a First heat medium pipe 23b Second heat medium pipe 23c Third heat medium pipe 23d Fourth heat medium pipe 23e Sprinkling pipe 40, 47 Temperature controller 41 Constant flow valve 50 Catchment pit 5 Frame placed space (frame body mounting portion)
60 Facility 60A, 60B, 60C Mount 3 Transport vehicle A, B Container

Claims (4)

A heat medium tank for accommodating the heat medium;
A circulation pump for circulating the heat medium through a pipe;
An induction heating unit for heating the heat medium by high frequency induction heating;
A grid-like frame made of a plurality of steel materials having an upper flange, a lower flange, and a web, together with snow being thrown,
A first snow-melting pipe group that is provided along one direction through the through-hole formed in the web and through which the heat medium heated by the induction heating unit flows;
A snow melting device, comprising: a second snow melting pipe group provided along the upper surface of the upper flange in the other direction orthogonal to the one direction and through which the heat medium heated by the induction heating unit flows. A water collecting pit that is provided below the frame and collects water melted by snow;
A pump for pumping up the water collected by the water collecting pit;
A heat exchanger that exchanges heat between the water pumped up by the pump and the heat medium to make hot water;
The snow melting device according to claim 1, further comprising a watering device that is provided above the frame and sprays the hot water. It has a container that can be placed on a gantry attached to the water collecting pit,
The container contains the heat medium tank, the circulation pump, the induction heating unit, and the heat exchanger.
The snow melting device according to claim 2, wherein the frame is detachably mounted and fixed to a frame mounting portion provided above the water collecting pit.   The snow melting apparatus according to claim 3, wherein the container can store the frame removed from the frame mounting portion during transfer.

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