JPH11140840A - Snow melter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively use warmed heat exchange liquid by arranging a cooling water returning pump in a load heating tank communicating with a cooling water chamber, and communicating one end of a cooling water returning pipe with an discharge outlet of the pump while the other with the cooling water chamber and a load heating pipe via a three-way valve. SOLUTION: Heat exchange liquid is filled up in a load heating tank 10 disposed at a lower part of a burner 31 and a snow melting chamber 32 and a cooling water returning pump 6 is arranged. One end of a cooling water returning pipe 18 is connected to a discharge opening of the pump 6 while the other to a pipe to a cooling water chamber and a discharge side load heating pipe 8a through a three-way valve 35. When the valve 35 is switched and an upper cooling water returning pump 6 communicating with the pipe 8a is operated, the heat exchange liquid heated flows in a load heating pipe 8 to melt the snow on the ground. By extending the pipe to the place where persons or cars pass, snow melting can be made with the effective use of the heated liquid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a snow-covered area.
The present invention relates to a technique for melting snow accumulated around a house using a buried snow melting device.

[0002]

2. Description of the Related Art Conventionally, there is known a technology relating to a buried type snow melting apparatus in which a snow melting machine is buried in the ground such as in a yard or a garage, and snow is removed, melted and discharged into the snow melting room. However, the snow that has accumulated far from the location where the snow melting device is buried must be transported to the location where the snow melting device is buried when removing snow, so there is a problem that it takes a lot of labor. there were. On the other hand, the present inventors have extended a road heating pipe from the buried snow melting device into the ground and sent a heat exchange liquid into the pipe, thereby warming the ground at a distant place, and A method has been proposed to melt the snow that has accumulated on the sea.

[0003]

By applying the above-mentioned technique, it is not necessary to carry snow-removed snow to a place where a snow-melting device is buried as in the prior art, so that the labor can be remarkably reduced. It was necessary to separately provide a dedicated pump for sending the heat exchange liquid to the apparatus, so that the number of parts of the snow melting apparatus increased, which was disadvantageous in terms of manufacturing cost. In addition to the dedicated pump, there is a cooling water return pump for cooling the snow melting plate and a shower pump for preventing snow from adhering to the wall of the snow melting chamber, so that the control of the pump tends to be complicated.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. That is, the road heating tank 10 is provided adjacent to the burner chamber 31 and the snow melting chamber 32 constituting the buried type snow melting apparatus 34, and the road heating tank 10 is filled with a heat exchange liquid, and In a snow melting apparatus in which the load heating pipe 8 is connected to the tank 10 and circulated, the snow melting chamber 32
A cooling water chamber 4 is provided to communicate with the load heating tank 10, and a cooling water return pipe 18 is communicated with a discharge port of the cooling water return pump 6 disposed in the load heating tank 10. The other end of 18 is a three-way valve 3
The cooling water chamber 4 and the load heating pipe 8 communicate with each other via the reference numeral 5. Further, the valve element 49 of the three-way valve 35 is operatively connected to the lid 36 via an arm, and
6 is switched by opening and closing.

BEST MODE FOR CARRYING OUT THE INVENTION

An embodiment of the present invention will be described. 1 is a side sectional view of the buried snow melting apparatus of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a sectional view taken along line aa in FIG. 1, FIG. 4 is a sectional view taken along line bb in FIG. FIG. 6 is a side view of the valve, and FIG. 6 is a view in which a road heating pipe is extended to the front of the entrance.

This will be described with reference to FIGS. 1, 2, 3 and 4. In the present embodiment, the buried snow melting apparatus 34 includes the main body frame 1.
Is separated into a burner chamber 31 and a snow melting chamber 32 by a burner mounting plate 11, a burner 2 is arranged inside the burner chamber 31, and a snow melting plate 3 is arranged inside the snow melting chamber 32. . The burner 2 and the inside of the snow melting plate 3 are communicated with each other so as to penetrate the burner mounting plate 11. The snow melting plate 3 is supported by supports 16 and 17 and is supported in a floating state. The upper part of the buried snow melting device 34 can be closed by a lid 36.

The snow melting plate 3 is formed in a substantially pentagonal shape when viewed from the front, and a hot air hole 3 is formed on a slope (side surface) of the snow melting plate 3.
a, 3a... are opened so that the hot air from the burner 2 is blown obliquely upward to melt the snow put into the snow melting chamber 32, and the snow contacting the slope of the snow melting plate 3 is also melted. And fall along the slope as water. Also, the ridge 3b at the upper end of the snow melting plate 3 is joined by joining the ends of the steel plates as vertical sides,
A gap is provided on the mating surface with a spacer (not shown) interposed therebetween, and the gap is formed as a hot air hole 3c so that hot air is ejected upward. Even if the thrown snow is pressed from above and solidified, it is split right and left, falls along the slope by its own weight, and is melted by the snow melting plate 3.

A cooling water chamber 4 is provided on the front surface of the snow melting plate 3 in conformity with the extension of the snow melting plate 3 so that the flame from the burner 2 does not deform the front surface of the snow melting plate 3. A heat exchange liquid is supplied from above the cooling water chamber 4 through a three-way valve 35 from a cooling water return pipe 18, which will be described later. A cover 30 is provided so as not to mix.

A part of the water after being melted is discharged from a drain 12 opened at a lower part of the snow melting chamber 32 by a pump chamber 33 formed at one corner of the body frame 1, and a bottom of the snow melting chamber 32 is formed as a cooling water chamber. The snow melted in the snow melting chamber 32 is accumulated from the drain 12 into the pump chamber 33 from the drain 12 by lowering the four sides. The drain 12 is covered with a net to remove dust and the like.

In the pump chamber 33, there is disposed a shower pump 5 which automatically operates when a certain amount of water accumulates.
A shower pipe 15 is communicated with a discharge port of the shower pump 5, and the shower pipe 15 is piped upward along a wall surface of the snow melting chamber 32 so as to discharge heated water. This prevents the snow that has been thrown into the side plate (wall surface) from sticking and falling.

A load heating tank 10 is provided below the burner chamber 31 and the snow melting chamber 32. The load heating tank 10 is separated by a partition plate 20 provided in the middle of the main body frame 1 in the vertical direction, and the load heating tank 10 is filled with a heat exchange liquid made of an antifreeze. However, although the road heating tank 10 may be formed separately, the load heating tank 10 is in contact with the snow melting chamber 32 so that heat can be exchanged. The road heating tank 10 is not limited to the lower part of the burner chamber 31 and the snow melting chamber 32 but may be arranged on the side.

The cooling water return pump 6 is disposed in the load heating tank 10 and is connected to the control circuit 21. A cooling water return pipe 18 communicates with the discharge port of the cooling water return pump 6.
The other end of the three-way valve 35 as shown in FIGS.
Is connected to the pipe 37 for the cooling water chamber and the discharge side load heating pipe 8a through the
Reference numeral 7 is inserted into the cooling water chamber 4. The cooling water chamber 4 and the inside of the load heating tank 10 are communicated by an overflow pipe 9, and the upper end of the overflow pipe 9 is located in the upper part of the cooling water chamber 4.

Therefore, when the cooling water return pump 6 is driven, the heat exchange liquid on the lower temperature side in the load heating tank 10 is sucked in, and the cooling water is returned from the cooling water return pipe 18 through the three-way valve 35. It is sent to room 4. When the cooling water return pipe 18 is heated even when passing through the burner chamber 31 and the snow melting chamber 32, the cooling water returning pipe 18 is further heated in the cooling water chamber 4, and the liquid level becomes higher than the upper end of the overflow pipe 9. The heat exchange liquid is returned from the overflow pipe 9 to the load heating tank 10 and is heated. Note that heat is also transmitted from the partition plate 20 in contact with the burner chamber 31 and the snow melting chamber 32, and the heat exchange liquid is warmed. Further, an electric heater 41 is provided in the road heating tank 10 so that snow can be melted by the road heating pipe 8 even when the burner 2 is not used. However, the cooling water return pump 6 is synchronized with the operation of the burner 2, and when the burner 2 is stopped, the cooling water return pump 6
Can also be stopped. Further, a temperature sensor 40 is arranged in the load heating tank 10, and when the temperature rises to the set temperature set by the setting machine 22, the cooling water return pump 6 and the electric heater 41 are stopped.

A cooling water return pipe 18 is connected to a discharge port of the cooling water return pump 6 disposed in the load heating tank 10, and the other end of the cooling water return pipe 18 is cooled through the three-way valve 35. The pipe 37 is connected to the water chamber pipe 37 and the discharge-side load heating pipe 8a.
The discharge-side pipe 8a and the return-side pipe 8b constitute a load heating pipe 8, and the load heating pipe 8 is separated from a location where the snow melting device 34 is buried, as shown in FIG. It is buried and extended under the ground near the surface to the place where people and vehicles pass, such as roads and passages. The outlet path of the three-way valve 35 is switched to connect the cooling water return pipe 18 to the discharge-side load heating pipe 8.
a, the heat exchange liquid heated in the load heating pipe 8 is caused to flow by operating the cooling water return pump 6, and the heat warms the ground and accumulates on the ground. It melts the snow. Then, the heat exchange liquid cooled by the heat exchange passes through the return-side load heating pipe 8b, flows into the cooling water chamber 4 once, and is returned to the load heating tank 10.

[0015] As shown in FIG.
Is connected to the lid 36 via an opening / closing lever 42 including a valve body support arm 46, a connection arm 47, and a lid support arm 48. Specifically, the valve element 49 of the three-way valve 35 is rotatably attached to the valve case 50, and a lower part of the valve element support arm 46 is fixed to the valve element.
6 is provided with a lid supporting arm 48 via a connecting arm 47.
The lid support arm 48 is fixed to the lid 36. The lower end of the lid 36 is connected to a support plate 44 provided on the upper surface of the main body frame 1 via a pivot 43. By rotating the valve 49 in conjunction with opening and closing of the lid 36, the cooling water The connection of the return pipe 18 can be switched to the pipe 37 for the cooling water chamber, the discharge-side load heating pipe 8a, or both directions. A stopper 45 is attached to the valve body support arm 46, and when the lid 36 is opened, the connecting arm 46 is locked by the stopper 45 so that the open state can be maintained.

The lid 36 and the three-way valve 35
Can be linked as described above, so that various usages are possible. For example, when the lid 36 is opened, the cooling water return pipe 18, the pipe 37 for the cooling water chamber, and the discharge-side load heating pipe 8a are communicated, and the heat exchange liquid circulates through both the main body 1 and the load heating pipe 8. In this way, the snow put into the main body and the snow on a passage or the like separated therefrom are melted, and the setting is made so that the snow circulates only in the load heating pipe 8 when the lid 36 is closed. Alternatively, by setting the heat exchange liquid to circulate only in the main body 1 when the lid 36 is opened, and to circulate only in the load heating pipe 8 when the lid 36 is closed, it is possible to sufficiently supply the heat during snow injection and snow melting work. The high-temperature heat exchange liquid stored in the load heating tank 10 is circulated only in the load heating pipe 8 after the charging operation, so that the snow in the passages and the like is melted in a short time, and the snow melting effect is maintained for a long time. It is possible to do. The load heating tank 10
Is usually buried in the ground, so the heat exchange liquid in it is difficult to cool.
The temperature of the heat exchange liquid can be further increased by attaching a heat insulating material around the periphery.

As shown in FIG. 6, a road heating pipe 8 is extended from the buried snow melting device in front of the garage to the front of the entrance by the above-described buried type snow melting device 34 to cool the snow melting plate. By circulating the heat exchange liquid through the load heating pipe 8 using the cooling water return pump 6, the ground in front of the entrance can be warmed and the snow accumulated on the ground can be melted. In this case, by omitting the dedicated pump for sending the heat exchange liquid, the structure of the snow melting device can be simplified, the production cost can be reduced, and the operability can be improved. In addition, the three-way valve 42 connected to the cooling water return pump 6 By interlocking the turning operation of the valve body 49 with the opening / closing operation of the lid 36, various snow melting methods can be provided according to the snowfall situation.

[0018]

According to the present invention, the following effects can be obtained. That is, the buried snow melting device 3
4, adjacent to the burner chamber 31 and the snow melting chamber 32,
In a snow melting apparatus in which a road heating tank 10 is provided, a heat exchange liquid is filled in the load heating tank 10, and a load heating pipe 8 is connected to the load heating tank 10 and circulated. A cooling water chamber 4 is provided in the chamber 32 and communicates with the load heating tank 10 so that the load heating tank 1
A cooling water return pipe 18 communicates with the discharge port of the cooling water return pump 6 disposed in the cooling water return pipe 6, and the other end of the cooling water return pipe 18 is connected to the cooling water chamber 4 and the load heating pipe 8 via a three-way valve 35. Because of the communication, the heat exchange liquid in the load heating tank can be sent to the cooling water chamber and / or the load heating pipe according to the water temperature and work by switching the three-way valve. The liquid can be used effectively. In addition, since the water can be discharged to the cooling water chamber and the load heating pipe by one pump, the number of parts can be reduced, and the manufacturing can be performed at low cost. Also, the valve element 4 of the three-way valve 35
9 is operatively connected to the lid 36 via an arm.
Since the switching is performed by opening and closing the three-way valve, it is not necessary to perform the switching operation of the three-way valve at the time of putting snow or at the end of the putting work, thereby improving operability.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an embedded snow melting apparatus according to the present invention.

FIG. 2 is also a plan view.

FIG. 3 is an aa front sectional view of FIG. 1;

FIG. 4 is a front sectional view taken along line bb in FIG. 1;

FIG. 5 is a side view of a three-way valve.

FIG. 6 is a diagram in which a road heating pipe is extended to the front of the entrance.

[Explanation of symbols]

 Reference Signs List 4 cooling water chamber 6 cooling water return pump 8 load heating pipe 8a discharge side load heating pipe 10 load heating tank 18 cooling water return pipe 31 burner chamber 32 snow melting chamber 34 buried snow melting device 35 three-way valve 36 lid 37 cooling Pipe for water room

Claims (2)

[Claims] A load heating tank is provided adjacent to a burner chamber and a snow melting chamber constituting a buried snow melting apparatus, and a heat exchange liquid is filled in the load heating tank. In the snow melting apparatus in which the load heating pipe 8 is connected to and circulated to the load heating tank 10, the cooling water chamber 4 is provided in the snow melting chamber 32 to communicate with the load heating tank 10,
A cooling water return pipe 18 communicates with a discharge port of the cooling water return pump 6 disposed in the load heating tank 10,
The other end of the cooling water return pipe 18 communicates with the cooling water chamber 4 and the load heating pipe 8 via a three-way valve 35. 2. The snow melting apparatus according to claim 1, wherein the valve element 49 of the three-way valve 35 is operatively connected to the lid 36 via an arm, and is switched by opening and closing the lid 36.