JPH0639770B2 - Heating and melting device - Google Patents

Description

Detailed Description of the Invention A. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating / melting apparatus, and more particularly to a heating / melting apparatus for rapidly melting an object to be melted, such as snow and asphalt.

B. SUMMARY OF THE INVENTION The present invention relates to a heating and melting apparatus for heating and melting a melted object such as snow or asphalt, in which molten air is blown into a melted material containing portion that contains the melted object to melt and liquefy the melted object. In addition to this, by discharging and spraying the liquefied liquid, it is possible to efficiently heat and improve the melting effect.

C. Conventional technology In heavy snowfall areas, snow removal from roads, railways, airports, graveyards, etc. requires a great deal of human power, which requires a large amount of cost and severe physical labor.

Especially in Japan, it is known that the winter weather on the coast of the Sea of Japan is prone to heavy snowfall on the coast of the Sea of Japan because the Siberian cold air mass meets the warm high pressure zone from the south. About one-fourth of the total population lives on the Sea of Japan side, where heavy snowfall occurs, so it is necessary to take thorough measures to combat snow and ice.

However, in general, the current state of securing traffic such as railway networks and road networks is such that it does not hinder the passage of traffic, and it has not reached the level of maintaining a certain speed or more and securing the necessary traffic volume. The reason for this is that the width of the road surface becomes narrow due to snow removal during snow accumulation, or the traveling speed decreases when the road surface condition deteriorates.

Also, during the snow season, road surface damage due to snow removal work and road surface damage due to spiked tires of vehicles and tires with chains wound will occur.

D. Problems to be Solved by the Invention In recent years, improvements in snow removal measures have been attempted, and progress has been made in expanding snow removal plans and improving snow removal systems. Especially, there is a remarkable thing about the snow removing machine. However, there are many unsolved issues regarding the snow removal method, road surface freezing treatment, and road surface damage. In addition, it was not possible to secure sufficient snow-covering locations and efficient transportation and snow removal methods for such areas.

Further, it takes a lot of labor and cost to correct the damage on the road surface.

E. Means for Solving the Problems The present invention solves the above-mentioned problems by heating a melted object containing portion for containing a melted object and a melted object in the melted object accommodation part. A heating part to be a liquid, a heating energy supply part for supplying heating energy to the heating part, a control part for controlling the operation of the heating energy supply part, and a melted object in the melted material containing part. And a means for discharging and dispersing the liquid from the liquid containing portion.

F. Effect According to the present invention, hot air is continuously blown into the melted material accommodation portion to heat the melted material accommodation portion, and the melted object inside thereof is also heated and liquefied. Further, the liquefied liquid can be discharged and used as a snow melting means, and the warmed liquid can be returned to the melted material containing portion to enhance the melting effect. In addition, when the snowfall period has passed, the heating and melting apparatus according to the present invention can be used to effectively perform road surface paving.

G. EXAMPLES The present invention will be specifically described below with reference to examples shown in the drawings.

FIG. 1 shows a heating and melting apparatus according to an embodiment of the present invention. Reference numeral 1 is a guide pipe for introducing an object to be melted, for example, snow from a snowplow (not shown), and snow introduced from the pipe 1. Are put into bucket 2. The bucket 2 is connected to a melting container made of stainless steel, such as a melting pipe 3. In the melting pipe 3, a feeding device 4 having a pusher body made of a screw for feeding the snow in the bucket 2 into the pipe 3 is provided.
The feeding device 4 is driven by an electric motor 5. Therefore, the bucket 2 and the melting pipe 3 form a melted object storage portion A, and the guide pipe 1, the feeding device 4 and the electric motor 5 form a melted object feeding portion B. A controller 6 controls the electric motor 5 at a variable speed.

The pipe 3 is provided with a heating section C.
Is composed of a heat pipe 7, a heater 8 and the like, as will be described later.

A compressor 11, which is a compressed air generating unit, is connected to the heat pipe 7 via an air pipe 9 and an air filter unit 10. Compressed air from the compressor 11 is supplied to the heat pipe 7 and blown into the pipe 3 as hot air through the heat pipe 7.

Reference numeral 12 denotes a hot water tank. The hot water tank 12 stores hot water melted in the melting pipe 3, and a drain cock 12a is attached to a lower portion of a side surface of the tank 12. Further, a fitting 12b for overflow is attached to the upper side of the warm water tank 12. A dustproof device 13 is provided inside the warm water tank 12. The warm water tank 12, the drain cock 12a, and the overflow fitting 12b form a liquid container D.

Reference numeral 14 denotes a process input section, to which a signal from a sensor 15 that detects the temperature of the pipe 3 and a signal from a sensor 16 that detects the water temperature of the hot water tank 12 are input. The output of the process input unit 14 is input to the microprocessor 17, is calculated here, and the calculated output is given to the power control unit 18 to control the control unit 18. The output of the processor 17 is also used when controlling the switches 19 and 20. Reference numeral 21 denotes a display operation setting unit, and these sensors 15, 16, the process input unit 14, the microprocessor 17, and the display operation setting unit 21 constitute an operation control unit E.

22 is a diesel engine power generator that constitutes the power supply unit,
As will be described later, this power generation device 22 is mounted on a vehicle together with the above-described devices. The output of the power generator 22 is supplied to the electric power control unit 18 and is also supplied to the electric motors 5, 23, 24 via the switches 19, 20. 25a-25d
Is a power switch for an electric motor for driving a belt conveyor. 26 and 27 are pumps for pumping hot water from the hot water tank 12 and spraying it on snow on the road or on the roof with a sprayer 28 or returning it to the bucket 2 for injection. The liquid discharge part F is constituted by.

Further, electric power is supplied to the heater 8 from the electric power control unit 18 through each lead wire of the electric power bus 29, and the exhaust gas of the diesel engine power generation device 22 is guided to the inlet pipe 31 of the pipe 3 through the conduit 30. The exhaust gas guided to the pipe 3 is exhausted from the exhaust pipe 32.

2 is a sectional view taken along the line II-II in FIG. 1, and FIG.
FIG. 3 is a sectional view taken along line III-III in the figure. As shown in FIGS. 1 to 3, a heat pipe 7 is connected to the pipe 3, and the pipe 3 is passed through the heat pipe 7.
Hot air is blown inside to heat the pipe 3.
That is, as shown in FIG. 2, a plurality of heat pipes 7 are arranged along the circumferential direction of the pipe 3 to form a heating element group 7A, and this heating element group 7A is further connected to the pipe 3. The heating unit C shown in FIG. 1 is arranged in the axial direction.

The pipe 3 comprises a plurality of pipes having different diameters arranged concentrically, and as shown in FIG. 3, a first pipe 33a,
A second tube body 33b having a diameter smaller than that of the first tube body 33a.
And a third tubular body 33c having a diameter smaller than that of the second tubular body 33b, and a hollow disk-shaped lid member 34 attached to one end of these tubular bodies 33a to 33c. A heat insulating member 35 is inserted between the first tube body 33a and the second tube body 33b. A cavity 36 is formed between the second pipe body 33b and the third pipe body 33c for allowing another heat medium, for example, exhaust gas of the diesel engine power generation device 22 to flow therethrough. The material to be melted is circulated in the hollow portion 37 of the third tubular body 33c.

The heat pipe 7 is for generating hot air.

As shown in FIG. 2, each heat pipe 7 of the heating element group 7A communicates with the air supply pipe 39 connected to the corresponding blower pipe 9 via a branch pipe 40, and these pipes are stainless pipes. In addition, it has been heat-insulated. Third
As shown in the figure, the heat pipe 7 is inserted through the support member 38 provided between the second pipe body 33 b and the third pipe body 33 c of the pipe 3 and the inside of the support member 38. Heat pipe 7
A heat insulating material 52 is interposed between the support member 38 and the support member 38. The conduit 30 communicating with the diesel engine power generator communicates with the cavity 36 of the pipe 3, and the pipe 3 is made of stainless steel. A heater 8 is provided around the heat pipe 7.
Are wound, and the heaters 8 are connected by wiring 41.

As described above, the pipe 3 is heated by blowing hot air from the heat pipe 7 and hot air from the exhaust gas from the diesel engine power generator into the pipe 3. Furthermore, since the heat pipe 7 is preheated or heated by the heater 8, the heating efficiency of the pipe 3 is significantly improved.

Next, the operation of the above embodiment will be described with reference to the flowchart of FIG.

First, the diesel engine power generator 22 is started to establish the voltage. After that, the condition of ice and snow that is the object to be melted, ambient temperature, hot water temperature, delivery device speed, etc. are set. After these settings are completed, the power control unit 18 is operated by the output of the microprocessor 17 to start the operation of the air compressor, and the compressed air is supplied to the heat pipe 7. From the heat pipe 7 to the pipe 3 as shown by the arrow 42 in FIG.
Blow hot air toward the center of. Next, the power control unit is operated by the instruction from the microprocessor 17 to supply the current of the heater 8 and adjust the heater voltage. On the other hand, the exhaust gas from the diesel engine power generation device 22 is guided to the pipe 3 to reuse the engine exhaust heat.

When the temperature of the pipe 3 is higher than or equal to the set value, the electric motor 5 is driven to rotate the feeding device 4. At this time,
The supply of snow to the bucket 2 starts from a snowplow (not shown) through the guide pipe 1. The snow thrown into the bucket 2 is sent to the pipe 3 by the sending device 4. Since the pipe 3 has already been heated, the sent snow is melted into warm water. This warm water is stored in the warm water tank 12. The temperature of the hot water in the hot water tank 12 is detected by the sensor 16,
When the temperature is higher than or equal to the set value, the hot water circulation pump of the liquid discharge part F is operated, or when the hot water tank hot water level is equal to or higher than the specified value, the sprayer 28 is used to spray hot water on the snow to melt the snow. When the hot water tank 12 is full, hot water flows out through the overflow fitting 12b.

When the temperature of the pipe 3 is lower than the set temperature, the heater voltage is adjusted to continue heating. Further, the heat pipe 7 and the heater 8 are selectively controlled according to the temperature of the pipe 3 and the temperature of the hot water tank 12. That is, the microprocessor 17 arithmetically processes the detection signals of the temperature sensors 15 and 16,
The power control unit 18 is operated by this arithmetic processing signal to selectively control the air compressor 11 and the heater power supply, and thereby the temperature of the pipe 3 is controlled.

In the above-described embodiment, when it is necessary to further increase the temperature of the hot air blown from the heat pipe 7,
An induction heating unit may be added. That is, as shown in FIG. 1, an induction heating unit 43 is attached to the blower pipe 9 connected to each heat pipe 7, and power is supplied from the power control unit 18 through the frequency converter 44.

In the melting device provided with the induction heating section 43, as shown in FIG. 5, when the induction heating section 43 shown in FIG. 1 is operated after the operation of the air compressor is started, the power control section 18 performs the frequency conversion. The induction heating unit 43 is controlled through the device 44. After that, the power of the heat pipe 7 is turned on,
After the heater voltage is adjusted, if the temperature of the pipe 3 is lower than the set value, power control of the induction heating unit 43 and adjustment of the heater voltage are performed again.

According to the heating and melting apparatus of the above-described embodiment, since the heat pipe is used as the heating unit, the apparatus can be made compact and lightweight, and the temperature rising characteristic is excellent. Further, since the heating element group 7A can be switched and selected as needed, optimum heating control can be performed.

The heating and melting apparatus shown in FIG. 1 has a structure shown in FIG.
It can be mounted on a vehicle 45 such as a trailer as shown in (C). The same parts as those in FIG. 1 are designated by the same reference numerals. The bucket 2 is arranged at the left end in FIGS. 6A and 6B, and the hot water tank 12 is arranged at the right end. The bucket 2 and the hot water tank 12 are connected by a snow melting pipe 3. The diesel engine generator 22 and the other portion 46 are arranged in the central portion of the vehicle 45.

Fig. 7 (A) and (B) show the vehicle 4 when the snow season has passed.
If the hot water tank 12 at the left end of FIG. 5 (right end in FIG. 6C) is removed and the asphalt paving equipment 48 is attached, the pipe 3
Etc. can be used as they are. In addition, FIG. 7 (A), (B)
In the figure, 49 is a leveling stirring device, 50 is a uniform stirring feeding device, and 51 is a holding plate. When the diesel engine power generation device 22 is mounted on another vehicle, only the snow melting device is used. By doing so, the size of the entire apparatus can be reduced, which improves workability in a narrow space. Further, a belt conveyor is housed in the storage portion 47 of the vehicle 45 shown in FIG. 6 (B). If you use a snowplow or a bulltozer when disposing of snow, this belt conveyor may cause the snow to collapse, so the bucket 2 should be manually operated.
Used to transport snow to.

In FIG. 6, the case where the heating and melting apparatus is movable has been described as an example, but the present invention is not limited to this and may be, for example, a fixed type.

H. As described above, according to the present invention, the following advantages can be obtained.

(1) Since the conventional snow removal method removes snow by skipping snow,
This was not possible when the surroundings were densely packed with houses, but the snow removal vehicle according to the present invention is a means for melting snow, so work can be done smoothly under bridges, railroad crossings, densely populated private houses, liquid yard, and graveyards.

(2) In the conventional snow removal method, the work of transporting snow deposits is required, but in the present invention, the work is extremely simple because it only melts snow.

(3) Since water can be sprayed with hot water after the snow melt, the remaining snow and ice snow adhering to surrounding fences can be melted.

(4) It is safe for safety because it does not use an open flame.

(5) If the power generator is mounted on another vehicle, the entire size can be reduced, and work in narrow alleys is facilitated.

(6) The work time required for removing snow can be significantly reduced by melting snow.

(7) Since the operation of the snow removal vehicle of the present invention is almost automated, it is easy and the number of workers can be reduced.

(8) Since the heat pipe that generates hot air is used as the heating unit, the size and weight of the device can be reduced, and optimal heating control can be economically performed.

[Brief description of drawings]

1 is a schematic configuration diagram of a heating and melting apparatus according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 is a sectional view taken along line III-III of FIG. 4 and 5 are flowcharts showing the operation of the heating and melting apparatus according to the present invention, and FIGS. 6 (A) to (C) are plan and side views in which the apparatus of the present invention is mounted on a vehicle, and FIG. 7 (A). ) And (B) are a plan view and a side view of a main part when the present invention is applied to an asphalt pavement vehicle. 2 ... Bucket, 3 ... Melting object melting pipe, 4 ... Feeding device, 5 ... Electric motor, 7 ... Heat pipe, 8 ... Heater, 11
... Compressor, 12 ... Hot water tank, 15,16 ... Sensor,
17 ... Microprocessor, 18 ... Power control unit, 22 ...
Diesel engine generator, 23, 24 ... electric motor, 2
6, 27 ... Pump, 28 ... Sprinkler, 31 ... Inlet pipe, A ...
Molten material storage portion, B ... Inlet portion, C ... Heating portion, D ... Liquid storage portion, E ... Operation control portion, F ... Liquid discharge portion.

Claims (10)

[Claims] 1. A melted material storage portion for storing a melted material,
A feeding part for feeding the melted object in the containing part, a heating part for sending hot air to the melted object containing part to melt the melted object, and a heating part in the melted part containing part by the heating part. A liquid storage part for storing a liquid obtained by melting the melted object; and a control part for controlling the heating energy supply part of the heating part according to the temperature of the liquid storage part and the temperature of the melted material storage part. A heating and melting device comprising: a liquid discharge part configured to discharge the liquid in the liquid storage part. 2. The heating and melting apparatus according to claim 1, wherein the material to be melted accommodation portion is a tube made of metal. 3. The heating / melting apparatus according to claim 1, wherein the feeding unit is a feeding device which is housed in the melted substance containing unit and is rotatable. 4. The heating and melting apparatus according to claim 1, wherein the heating section is a heat pipe for ejecting hot gas through a tube connected to the melted material containing section. 5. The heating and melting apparatus according to claim 4, wherein the heating section includes a heater for heating the heat pipe. 6. The apparatus according to claim 1, wherein the heating section has means for circulating the exhaust air of the diesel engine power generator of the heating energy supply section into the melted object containing section.
The heating and melting apparatus according to the item. 7. The heating and melting apparatus according to claim 4, wherein the heating section further has an induction heating section for preheating a gas to be supplied to the heat pipe. 8. The heating and melting apparatus according to claim 1, wherein the heating energy supply unit has a compressor that supplies compressed air to the heating unit. 9. The heating and melting apparatus according to claim 1, wherein the liquid discharge portion has means for discharging and dispersing the liquid in the liquid storage portion. 10. The heating and melting apparatus according to claim 1, wherein the control section has an arithmetic processing section that controls the selection of the heating section in accordance with the temperature of the melted material containing section.