JP3113387B2 - Snow melting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snow melting apparatus in which snow put in a snow melting tank is melted by hot water from a hot water boiler.

[0002]

2. Description of the Related Art This type of snow melting apparatus is disclosed in, for example,
As disclosed in Japanese Patent No. 32726, a snowmelt water tank buried in the ground and having a snow throwing port, and a hot water boiler installed on the ground are provided. By supplying the hot water of the hot water boiler to the snowmelt water tank, What melts the snow in a snowmelt tank is known.

[0003]

In the snow melting apparatus described above, city water or the like is supplied to a hot water boiler, and this water is heated by a hot water boiler to form hot water, and this hot water is supplied to a snow melting water tank. However, there is a disadvantage that a large amount of water is used. In addition, there is a problem in terms of energy conservation, such as the fact that water is constantly present in the hot water boiler, so that the water must be freezing-prevented even during the snowmelt operation stop so that the water does not freeze.

[0004] The present invention has been made in view of the above-mentioned facts, and in an apparatus in which hot water of a hot water boiler is supplied to a snow melting water tank to melt snow, an accurate method is used without using a large amount of water. The purpose of the present invention is to enable snow melting operation, and to prevent freezing accidents without the need for an anti-freezing device or anti-freezing operation, and to simultaneously melt snow on the roof. I do.

[0005]

According to the present invention, there is provided a snowmelt tank buried underground and having a snow opening, and installed on the ground.
A hot water storage type boiler having a heating device, a lower water supply port and an upper hot water outlet, and a check structure provided at a lower part in the snow melting water tank
A water pump that does not have an underwater pump, an automatic water level adjusting means that is provided at the lower part of the snowmelt water tank and discharges the water in the snowmelt water tank to the outside when the water level of the snowmelt water tank is higher than a predetermined water level, and a lower part of the submersible water pump and the hot water boiler The water supply port is connected to the water supply pipe that supplies the water from the snowmelt water tank to the hot water boiler, the upper outlet of the hot water boiler is connected to the upper part of the snowmelt water tank, and the hot water from the hot water boiler is sprinkled at the top of the snowmelt water tank . Hot water supply pipe for supplying to the hot water supply pipe, and an air charge valve provided at the top of the hot water supply pipe
Branching off from the hot water pipe , at the tip of the roof of the building
It has a watering nozzle facing it, and a hot water branch pipe having an upward gradient from the branch port toward the watering nozzle, and an open / close valve is provided in the middle of the hot water branch pipe.
It is configured to have.

[0006]

[0007]

When the underwater pump is operated beforehand, the water in the snowmelt tank is supplied to the hot water boiler through the water supply pipe. Then, the water supplied to the hot water boiler is heated here by the heating device. The hot water of the hot water boiler is supplied to the upper part of the snow melting water tank through a hot water pipe,
Since water is sprinkled from here, the snow put into the snowmelt water tank is melted. Further, by opening the on- off valve, the hot water supplied to the watering nozzle through the hot water branch pipe is jetted to the roof of the building, and is used for melting snow on the roof .

As described above, the water in the snow-melting water tank is supplied to the hot-water boiler to form hot water, and the hot water is supplied to the snow-melting water tank to melt the snow in the snow-melting water tank. It is only necessary to do so, so that a large amount of water is not consumed, and the snow melting operation of the roof can be performed simultaneously with the snow melting operation of the snow melting tank . In addition, the submersible pump has no check structure, and there is a height difference between the water inlet and outlet and the snowmelt tank, so that not only the water supply pipe and the hot water pipe can be drained, but also the hot water branch pipe. water draft is taken in, deer
Also, an air charge valve is provided at the top of the hot water pipe, so when the submersible pump stops, the hot water boiler,
The hot water in the hot water supply pipe and the hot water branch pipe, and the water in the water supply pipe ,
The air sucked from the air charge valve promptly returns to the snow bath and prevents water from remaining inside these baths. For this reason, it is not necessary to make the hot water boiler perform the anti-freezing operation or to operate the anti-freezing device such as the anti-freezing heater while the snow melting operation is stopped. Also, open the middle of the hot water branch pipe.
By opening and closing the valve, the snowmelt operation of only the snowmelt tank and the melting
It can be used for simultaneous snow melting operation of snow tanks and roofs.
You.

[0009]

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIG. 1, reference numeral 1 denotes a snowmelt tank buried underground. A snow opening 3 covered with a snow opening cover 2 is provided at the top of the snow melting water tank 1, and a glazing 4 for preventing falling is provided immediately below the snow opening 3. In addition, a submerged automatic water level adjusting pump (automatic water level adjusting means) 5 and a submerged water pump 6 are provided at a lower portion in the snow melting water tank 1.
This underwater automatic water level adjusting pump 5 is a float (not shown).
When the water level of the snowmelt water tank 1 becomes L2 or higher, the apparatus operates until the water level becomes L1 or lower.
Nozzle S1 through a filter F1 and a drain pipe P
And the water is sprayed onto the road R from the watering nozzle S1 to melt the snow on the road R.

Reference numeral 7 denotes a hot-water storage-type boiler installed on the ground, which has a can body 11 having a water chamber 10 formed outside a combustion chamber 9 facing a burner (heating device) 8. Water room 1
Reference numeral 0 denotes a U-shaped cross section, in which a water supply port 12 is provided at the bottom and a tap 13 is provided at the top. Then, the submersible pump 6 and the water supply port 12 of the hot water boiler 7 are connected to each other through the filter F2 and the water supply pipe 14, and the water pumped up by the submersible pump 6 is supplied to the water chamber 10 of the hot water boiler 7.
It is supplied to. The outlet 13 of the hot water boiler 7 and the upper space 15 in the snow melting water tank 1 are connected by a hot water supply pipe 16 which is branched into two, and the hot water in the water chamber 10 of the hot water boiler 7 is supplied to the hot water supply pipe 16. Watering port 17 at the tip ...
.. Are supplied into the snowmelt water tank 1. Further, an air charge valve 18 is attached to an upper portion of the hot water supply pipe 16.

In the middle of the hot water supply pipe 16, a hot water branch pipe 19 is provided.
A sprinkling nozzle S <b> 2 facing the roof 20 </ b> A of the building 20 is provided at the end of the hot water branch pipe 19. The hot water branch pipe 19 has an upward gradient from the branch port to the water sprinkling nozzle S2 at the tip, and an on-off valve V is provided in the middle. The hot water spouted from the watering nozzle S2 onto the roof 20A is collected by the gutter T together with the snow melting water, and guided to the snow melting water tank 1 via the hot water collecting pipe 21.

Reference numeral 22 denotes a control device provided in the hot water boiler 7. As shown in FIG. 2, the control device 22 includes an operation switch 23 that is turned on at the time of pressing operation, a water temperature sensor 24 that detects a water temperature (water supply temperature) in the water supply pipe 14 near the water supply port 12, and a water temperature sensor 24 near the tap 13. To the water chamber 10 and
It comprises a water detection electrode 25 which is insulated from the can 11 and a control circuit 26 such as a microcomputer. The control circuit 26 responds to signals from the operation switch 23, water temperature sensor 24 and water detection electrode 25. As shown in FIG. 3, the burner driving circuit 27 and the submersible pump 6 are controlled.

An underwater automatic water level adjusting pump 5 is provided in the snow melting water tank 1.
Water is supplied in advance using a hose or the like to the extent that the underwater pump 6 is immersed in water (L1 or less). And the snow throwing palate 4
, And put snow into the snowmelt tank 1 from the snow opening 3
The operation switch 23 is turned on.

When the operation switch 23 is turned on, the control circuit 26 operates the submersible pump 6. When the submersible pump 6 is operated, the water in the snowmelt tank 1 is supplied to the water chamber 10 of the hot water boiler 7 through the water supply pipe 14 and the water supply port 12, and the water level in the water chamber 10 rises. And the water room 10
Is almost full, an electric current flows from the water level detection electrode 25 to the can 11 through the water in the water chamber 10.

At this time, the control circuit 26 operates the burner drive circuit 27 to cause the burner 8 to start combustion. Therefore, the water in the water chamber 10 exchanges heat with the combustion gas in the combustion chamber 9 to become hot water. Then, the hot water in the water chamber 10 is supplied to the snow-melting water tank 1 through the hot water outlet 13 and the hot water pipe 16,
From 7, snow falls in the snowmelt water tank 1. When the on-off valve V of the hot water branch pipe 19 is opened, the hot water branched from the hot water feed pipe 16 to the hot water branch pipe 19 is jetted from the water spray nozzle S2 to the roof 20A, and is used for melting snow on the roof 20A. Then, the snowmelt water on the roof 20A is collected in the gutter T and collected in the snowmelt water tank 1 via the hot water recovery pipe 21.

By repeating such an operation, the snow in the snow-melting water tank 1 melts and becomes water. Then, when all the snow in the snowmelt water tank 1 melts and becomes water, the water temperature of the snowmelt water tank 1 rises, and accordingly, the water supply temperature near the water supply port 12 of the water chamber 10 also rises. Then, when the temperature detected by the water temperature sensor 24 becomes equal to or higher than a predetermined temperature (for example, a certain temperature of 10 ° C. or more), the control circuit 26 stops the operation of the burner driving circuit 27 and stops the combustion in the burner 8. Further, the operation of the underwater pump 6 is stopped, and the snow melting operation is terminated.

The submersible pump 6 does not have a check structure.
In addition, there is a height difference between the water supply port 12 and the hot water supply port 13 and the snow melting water tank 1, and not only the water supply pipe 12 and the hot water supply pipe 13 have a drainage gradient, but also the hot water branch pipe 19 has water. Since the draft is taken, when the operation of the submersible pump 6 is stopped, the hot water in the water chamber 10 of the hot water boiler 7 passes through the water supply pipe 14, and the hot water in the hot water feed pipe 16 and the hot water branch pipe 19 The water flows from the water spout 17 into the snowmelt water tank 1. Then, the water is quickly drained by the air sucked from the air charge valve 18. For this reason, the water chamber 10,
Water can be prevented from remaining in the water supply pipe 14, the hot water supply pipe 16 and the hot water branch pipe 19, and there is no fear that water freezes inside these during the stop of the snow melting operation.

When the water level in the snowmelt water tank 1 exceeds L2, the underwater automatic water level adjusting pump 5 operates until the water level falls below L1.
1 and spouts onto the road R from the sprinkling nozzle S1, so that the inside of the snowmelt tank 1 is always supplied only with water at the beginning, and is always kept at a water level suitable for snowmelt. Snow melting on the road R can be performed.

In the present embodiment, the water in the snowmelt water tank 1 is supplied to the hot water boiler 7 to be turned into hot water, and this hot water is supplied to the snowmelt water tank 1 and the roof 20A of the building 20 to be injected into the snowmelt water tank 1. I tried to melt the snow and the roof 20A snow,
It is only necessary to supply water to the snowmelt water tank 1 first, and after that, it is possible to perform a snowmelting operation with low water consumption while using the melting water of the snowmelt water tank 1. Also, while the snow melting operation is stopped, no water remains in the water chamber 10, the water supply pipe 14, the hot water supply pipe 16 and the hot water branch pipe 19 of the hot water boiler 7, and the hot water boiler 7 is operated to prevent freezing. For example, it is not necessary to operate the anti-freezing device such as the anti-freezing heater or the like. Moreover, snowmelt tank 1
The snow melting on the roof 20A can be performed while melting the snow, and the snow melting water on the roof 20A is also collected in the snow melting water tank 1, which is more economical. Furthermore, since the excess water in the snowmelt tank 1 is used for melting snow on the road R, efficient snowmelt driving is possible.

[0021]

As described above, the present invention has the following effects. Melting snow while saving water
Simultaneously melt snow in the tank and snow on the roof
Thus, an economical and versatile snow melting apparatus can be provided.
Supply hot water to the hot water boiler, hot water supply pipe and hot water branch pipe.
The water in the water pipe is released by air sucked from the air charge valve.
Can be quickly returned to the snowmelt tank and frozen in the hot water boiler.
Operation to prevent sintering, anti-freezing heater, etc.
No need to install anti-freezing equipment, making it more economical
You. By opening and closing the on-off valve in the middle of the hot water branch pipe,
Snowmelt operation in snow tank only and simultaneous snowmelt in snow tank and roof
It can be used separately for driving, and performs snow melting operation according to the snow condition
Can be.

[0022]

[Brief description of the drawings]

FIG. 1 is a schematic structural explanatory view of a snow melting apparatus showing one embodiment of the present invention.

FIG. 2 is a block diagram of a control device of the snow melting device.

FIG. 3 is a flowchart for explaining the operation of the control device of the snow melting apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Snow melting water tank 3 Snow throwing port 5 Underwater automatic water level adjusting pump (automatic water level adjusting means) 6 Underwater pumping pump 7 Hot water boiler 8 Burner (heating device) 12 Lower water inlet 13 Upper outlet 14 Water supply pipe 16 Hot water supply pipe 19 Hot water branch Pipe P Drain pipe S1 Sprinkler nozzle. S2 watering nozzle

Claims (1)

(57) [Claims] 1. A hot water boiler buried underground and having a snow throwing port, a hot water boiler installed on the ground and having a heating device, a lower water supply port and an upper hot water outlet, and a lower part of the snow melting water tank. A submersible pump without the provided non-return structure ,
An automatic water level adjusting means, which is provided at a lower part in the snow melting water tank and discharges water in the snow melting water tank to the outside when the water level of the snow melting water tank becomes equal to or higher than a predetermined water level, and communicates with a submersible water pump and a lower water inlet of a hot water boiler. The water supply pipe that supplies the water in the water tank to the hot water boiler, the upper outlet of the hot water boiler and the upper part of the snow melting water tank are connected, and the hot water of the hot water boiler is sprayed on the upper part of the snow melting water tank .
And hot water pipe for supplying the stage, set on top of the hot water supply tube
And a hot water branch pipe branched from the hot water pipe and having a water spray nozzle at the end facing the roof of the building, and having an upward gradient from the branch port toward the water spray nozzle. The middle of this hot water branch pipe
A snow melting device, characterized in that an opening / closing valve is provided in the device.