JP3694805B2 - Hot water circulation type snow melting equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot water circulation type snow melting device, and more particularly, to a hot water circulation type snow melting device that can improve snow melting efficiency and reduce snow melting cost by efficiently using the hot water of a hot water supply boiler for melting snow.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a snow melting apparatus that melts snow by injecting hot water, a heat source and a pump are provided in the snow melting tank, and about 4 to 5 degrees of snow melting water heated by the heat source is sucked by the pump and injected from the upper injection pipe. The hot water circulation type and the hot water supply boiler for daily life hot water are directly injected into the snow melting tank to melt snow, or once discharged into the snow melting tank and mixed with the snow melting water is injected. Some use hot water boilers.
[0003]
[Problems to be solved by the invention]
The above-mentioned hot water circulation type snow melting device has the disadvantage that when the amount of snow thrown into the snow melting tank increases, the water temperature decreases, the snow melting efficiency decreases, and the snow melting work takes time. On the other hand, the hot water boiler-utilized snow melting device has the following drawbacks. First, in the case of direct injection, a large amount of hot water is required, so the water charge is increased, and in the flush area, the sewerage charge is correspondingly increased, and the fuel cost is also increased. It is. Secondly, when the hot water is discharged into the snow melting tank, the hot water is diluted with the snow melting water at the time when the hot water is discharged into the snow melting tank. That is. Third, the set temperature of the hot water boiler is adjusted by adjusting the flow rate of water. Since a large amount of hot water is used for melting snow, a large amount of low temperature hot water is supplied from the hot water boiler to the snow melting tank. This is a disadvantage that the water pressure of other faucets is lowered.
[0004]
The present invention has been made in view of the above-described drawbacks of the prior art. By efficiently using the hot water of the hot water boiler, it is possible to improve the snow melting efficiency and reduce the cost, and the hot water boiler is an existing one. It is an object of the present invention to provide a hot water circulation type snow melting device that can minimize the equipment cost.
[0005]
[Means for Solving the Problems]
Means of the present invention according to claim 1 which is configured to solve the above problems, snow melting tank pump chamber on the lower side (5) is provided with (1), above the melting Yukiso (1) in An injection pipe (10) for injecting hot water from the inside, and an injection pump (10) provided in the pump chamber (5) for supplying the snow melting water in the snow melting tank (1) to the injection pipe (9 ) A hot water supply device (15) for supplying hot water generated by the hot water boiler (B) to the pump chamber (5) as high-temperature water having a desired flow rate and generating mixed hot water mixed with snowmelt water; The high temperature water supply device (15) has one end side (16A) connected to the hot water boiler (B) and a discharge port at the other end (16B) opened to the pump chamber (5). (16) and a flow rate control valve (17) provided in the hot water supply pipe (16) .
[0006]
And the discharge port of the hot water supply pipe (16) which comprises the said high temperature water supply apparatus (15) , and supplies hot water for a living from the said hot water boiler (B) to the said pump chamber (5) of the said injection pump (10) It is good to place it in the vicinity.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the figure, reference numeral 1 denotes a snow melting tank embedded in the ground A. The snow melting tank 1 is formed by fiber reinforced plastic (FRP) so as to bulge to the bottom part 2, the circular cylinder part 3, and the lower side of the circular cylinder part 3. A pump chamber 5 defined inside the cylindrical portion 3 through the filter 4, a cylindrical portion 6 having an opening formed in the upper portion of the cylindrical portion 3, and a snow inlet 7 formed in the cylindrical portion 6, The snow inlet 7 can be covered with a lid 8.
[0008]
Reference numeral 9 denotes an injection pipe in which a plurality of injection holes for injecting the mixed hot water from above is formed, and the injection pipe 9 is installed in the upper part of the cylindrical body 3. Reference numeral 10 denotes an injection pump provided in the pump chamber 5 to supply mixed hot water to the injection pipe 9, and the injection pump 10 is connected to the injection pipe 9 via a connecting pipe 11.
[0009]
Reference numeral 12 denotes a drainage pump for discharging excess snowmelt water in the snowmelt tank 1, and the drainage pump 12 is installed above the injection pump 10 by a gantry 13 in order to prevent the injection pump 10 from idling. A drain pipe 14 is connected to the drain pump 12, and the drain pipe 14 is led out from above the snow melting tank 1 and discharges snow melting water into a drain groove (not shown).
[0010]
Reference numeral 15 denotes a high temperature water supply device for supplying high temperature water to the pump chamber 5. Reference numeral 16 denotes a hot water supply pipe constituting the high temperature water supply apparatus 15, and the hot water supply pipe 16 has one end 16 </ b> A connected to the hot water boiler B, and the discharge port of the other end 16 </ b> B is opened near the injection pump 10. . Here, the hot water boiler B is for installing hot water in the home or workplace and supplying hot water, and the flow rate and temperature of the hot water can be set by the control panel B ₁ . Reference numeral 17 denotes a manual flow control valve provided on the upstream side of the hot water supply pipe 16, and a strainer 18, an electromagnetic on-off valve 19 and an intake valve 20 are provided on the downstream side thereof.
[0011]
Here, the flow rate control valve 17 is a low flow rate and is for supplying hot water of high temperature from the hot water supply boiler B to the pump chamber 5. The electromagnetic on-off valve 19 is electrically connected to the control panel B ₁ of the hot water boiler B, and is used, for example, when the operation is controlled by the timer of the control panel B ₁ . The intake valve 20 is a drain valve for preventing freezing in the hot water supply pipe 16, and when the flow control valve 17 or the electromagnetic on-off valve 19 is closed and the supply of hot water is stopped, the hot water supply pipe is connected from the intake valve 20. When the air is sucked into the hot water supply pipe 16, the hot water in the hot water supply pipe 16 falls into the snow melting tank 1 and is released.
[0012]
The present embodiment has the above-described configuration. Next, the operation will be described. Snow is poured into the snow-melting tank 1 in which the snow-melting water remains from the snow inlet 7, and hot water of about 50 to 80 degrees is pumped from the hot water boiler B through the hot water supply pipe 16 by the high-temperature water supply device 15. Supply to chamber 5. The high temperature water is supplied by timer control, and a time corresponding to the amount of snow thrown into the snow melting tank 1 is set by the control panel B ₁ . Snowmelt water in the snowmelt tank 1 flows into the pump chamber 5 from the filter 4, and high-temperature water is mixed with this to form mixed hot water of about 5 to 10 degrees, which is sucked by the injection pump 10 and injected from the injection pipe 9. The And high temperature water is supplied to the pump chamber 5 from the time hot water supply boiler B set by the timer, and it becomes a mixed warm water and can melt the snow in the snow melting tank 1. The temperature and flow rate of the hot water supplied from the hot water boiler B are determined in consideration of the capacity of the snow melting tank 1 and the amount of snow to be melted, and the operation time of the injection pump 10 is the melting of snow in the snow melting tank 1. It is decided arbitrarily by looking at the state.
[0013]
In the present embodiment, the hot water of about 50 degrees higher than the melted water is supplied from the hot water supply boiler B to the pump chamber 5 and discharged to the vicinity of the injection pump 10. Therefore, the mixed hot water that maintains the high temperature state can be injected from the injection pipe 9 into the snow melting tank 1 by mixing the hot water in the high temperature state without being diluted with the low temperature snow melting water. The thrown snow can be efficiently melted, and the fuel cost and water charge can be reduced to about one-third compared with the prior art.
[0014]
Further, since the hot water supply pipe 16 is not connected to the connecting pipe 11 located on the downstream side of the injection pump 10 and is opened to the pump chamber 5, the snowmelt water flows backward to the hot water boiler B side by the discharge pressure of the injection pump 10. This is safe because it does not cause a phenomenon (so-called cross connection).
[0015]
Also, in this case, the hot water supplied to the pump chamber 5 is for increasing the temperature of the snowmelt water, and is not directly melted by the hot water, so that the supply flow rate is sufficient. Therefore, since it is not necessary to increase the flow rate of the hot water supplied from the hot water supply boiler B to the pump chamber 5, the problem that the flow rate of the domestic hot water from the other faucets can be solved.
[0016]
In the present embodiment, the snow melting tank 1 is not provided with a heat source. However, a hot water type or an electric heat type heat source may be provided. By carrying out like this, snow melting efficiency can be improved more.
[0017]
Also, snow melting tank 1 in this embodiment has been described as the buried type, snow melting tank for constituting the present invention may be of ground-.
[0018]
【The invention's effect】
Since the present invention is configured as described in detail above, the following effects can be obtained.
(1) Since the flow rate control valve is provided in the hot water supply pipe for supplying the hot living hot water generated by the hot water boiler to the pump chamber, it is possible to supply the hot water to the pump chamber at a desired low flow rate, Moreover, the temperature and flow rate of the high-temperature water to be supplied can be determined in consideration of the volume of the snow melting tank and the amount of snow to be melted. Therefore, it is possible to obtain the optimum snow melting efficiency, and to solve the problems of the prior art such as reducing the fuel cost and reducing the flow rate of other faucets because the hot water used for melting snow is sufficient for the low flow rate. Can do.
(2) Since the discharge port of the hot water supply pipe for supplying hot water to the pump chamber is located in the vicinity of the injection pump, the hot water supplied to the pump chamber is kept at a high temperature without lowering the temperature. Since it can be sprayed as mixed hot water, it has excellent snow melting efficiency.
[Brief description of the drawings]
FIG. 1 is a configuration explanatory diagram of a hot water circulation type snow melting device according to the present embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Snow melting tank 5 Pump chamber 9 Injection pipe 10 Injection pump 15 Hot water supply apparatus 16 Hot water supply pipe 17 Flow rate control valve B Hot water supply boiler

Claims (2)

Snow melting tank pump chamber on the lower side (5) is provided with (1), injection pipe for injecting hot water from above the melting Yukiso (1) in (9), provided in said pump chamber (5) in the An injection pump (10) for supplying the snow melting water in the snow melting tank (1) to the injection pipe (9) , and a hot water having a desired flow rate as the hot water for hot water generated by the hot water boiler (B). A hot water supply device (15) for supplying the chamber (5) and mixed hot water mixed with the snowmelt water, the hot water supply device (15) having one end side (16A) on the hot water boiler A hot water supply pipe (16) connected to (B) and having a discharge port at the other end (16B) opened to the pump chamber (5), and a flow rate control valve (17) provided in the hot water supply pipe (16). A hot water circulation type snow melting device characterized by comprising: The discharge port of the hot water supply pipe (16) that constitutes the high temperature water supply device (15) and supplies hot water for living from the hot water boiler (B) to the pump chamber (5) is in the vicinity of the injection pump (10) . The hot water circulation type snow melting device according to claim 1, wherein the snow melting device is positioned.

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