JPH04336180A - Roof-snow melting device - Google Patents

Abstract

PURPOSE:To save the fuel cost by guiding hot waste water used in a house to a water storage tank for melting snow, heating it by an auxiliary boiler, and sprinkling it to a roof for melting snow. CONSTITUTION:A high-temperature hot waste water used in a house is guided to a roof snow melting water storage tank 3, and stored water is heated. An auxiliary boiler 2 is installed, and sprinkling water is heated. Hot water is sprinkled from a sprinkling part 30 by a pump P1 for melting snow on a roof R. A heating efficiency can thus be improved, and the fuel cost can be reduced.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roof snow melting device that can save energy by heating a heating medium for roof snow melting using hot water discharged water.

0002

2. Description of the Related Art Snow melting devices are known that melt snow by spraying hot water onto the snow on a roof or by installing panels that circulate hot water over the entire surface of the roof. Conventionally, such a device once collects a heat medium such as snow melting water, spray water, or circulating water into a water storage tank, then heats the heat medium and uses it again for roof snow melting.

0003

However, the temperature of the heat medium recovered in the water storage tank is low and a large amount of thermal energy is required to heat it, leading to an increase in fuel costs.

[0004] The present invention aims to provide a roof snow melting device that can reduce the fuel cost for heating the heating medium and achieve energy savings, based on the idea that the heating medium is heated by hot water discharged from the hot water used inside the house. It is said that

[0005]

[Means for Solving the Problems] In order to achieve the above object, the roof snow melting device of the present invention heats a heating medium for roof snow melting by hot water discharged from hot water used inside a house, and also heats the heating medium. It is equipped with an auxiliary boiler to

[0006]

[Operation] The heating medium for roof snow melting is heated by hot water discharged from the hot water used inside the house. In this way, since the heating medium is heated by using the heat of heated waste water, it is possible to reduce fuel costs and save energy, allowing for low-cost and labor-saving snow removal.

Furthermore, since an auxiliary boiler is provided to heat the heating medium, snow removal can be performed even at night when the amount of hot water discharged from hot water supply is reduced, and its use can be expanded.

[0008]Furthermore, since the hot water water supply water is supplied regardless of the outdoor environment such as cloudy weather or rain, the heating efficiency of the heating medium can be improved.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a roof snow melting device 1 of the present invention is equipped with an auxiliary boiler 2 that heats a heating medium for roof snow melting by hot water discharged from hot water used inside a house, and also heats the heating medium.

[0010] In this example, city water is used as the heat medium;
City water is stored in water tank 3.

The water storage tank 3 is shaped like a container, is buried underground, is connected to a water supply pipe 11 that can supply city water as the heating medium, and has a solenoid valve 10 interposed therebetween. A drop in the level of stored city water is detected by a water level detector 12 attached to the water tank 3, and the electromagnetic valve 10 is actuated based on the detection output to supply city water. Therefore, the water level in the water tank 3 is always maintained at the reference height.

[0012] The hot water used inside the house is, for example, hot water supplied to hot water equipment such as a bathtub 15 and a washstand 16. 19 is connected, and the hot water supplied to the hot water supply equipment becomes heated waste water and is supplied to the water storage tank 3 via the feed pipe 19. In addition, since the heated wastewater is supplied to the water storage tank 3 immediately after being used in the hot water supply equipment, the temperature thereof is stored in the water storage tank 3 at a high temperature that is not much different from the temperature during use. Therefore, the heat medium stored in the water storage tank 3 exchanges heat by mixing with the heated waste water and is heated.

[0013] In this explanation, the heating medium is heated by mixing the heating medium, which is city water, with the heated waste water. City water may be considered as a heating medium, and city water may be considered as auxiliary water that is supplied to the water storage tank 3 in order to prevent the water level in the water storage tank 3 from decreasing when the heating medium is in a small amount.

Further, in this embodiment, the roof snow melting device 1 has a heat medium flow path 20 through which the heat medium flows and a snow melt flow path 21 through which snow melting water accumulated on the roof R flows.

[0015] There are gutters 23, 23 at the tip of each eave part of the roof R.
are provided, and water collection pipes 24, 2 connected to the gutters 23, 23 are provided.
4 is electrically connected to the water tank 3, thereby forming the snow melting channel 21.

The heat medium flow path 20 is connected to a hot water distribution pipe 27 via a hot water supply pipe 26 that opens inside the water storage tank 3. The sprinkling pipe 27 includes a sprinkling section 30 provided at the tip and an auxiliary boiler 2 interposed at an intermediate position. The heating body 2A is installed.

Further, in this embodiment, a sensor 2B is provided inside the auxiliary boiler 2 to detect the temperature of the heated heating medium and to cause the heating body 2A to generate heat based on the detected output.

The spraying section 30 has a pipe body 30A disposed along the ridge of the roof R with a large number of water sprinkling ports 31 that open toward the roof R. Therefore, the melted snow water on the roof R is stored in the water storage tank 3 by the gutter 23 and the water collection pipe 24, and the melted snow water is heated by the warm water and becomes a high-temperature heat medium mixed with the warm water. At the same time, the heat medium is discharged from the water sprinkling port 31 onto the roof R as the pump P1 interposed in the water sprinkling pipe 27 is driven.

A bypass pipe 34 that communicates with a drainage pipe 33 is connected to the water collection pipe 24 via a switching valve 35, so that rainwater flowing into the water collection pipe 24 is directly connected to the drainage pipe 33 in seasons other than the snowy season. It can be washed away.

A purification filter 40 is provided at the opening of the hot water pipe 26 inside the water storage tank 3, and when cleaning the inside of the water storage tank 3 or when the stored water is filled to a standard height or higher, the water is removed. The water stored inside the tank 3 is drained into the drain 45 through a drain pipe 46 connected to the drain 45 and with a pump P2 interposed therebetween. Note that when the water level in the water tank 3 decreases, drain water can be supplied to the water tank 3 from the drain groove 45 by driving the pump P2 instead of city water.

[0021] The heat medium, such as snowmelt water or city water, stored in the water storage tank 3 is heated and raised in temperature by the heated waste water supplied from the hot water supply equipment such as the bathtub 15. Thereafter, the heat medium is discharged from the water spout 31 to the roof R via the heat medium path 20 by the pump P1, and melts and removes snow accumulated on the roof R. The melted snow and the heat medium sprayed from the water sprinkling port 31 pass through the water collection pipe 24 and are stored in the water storage tank 3 again. Therefore, snow can be melted without using a large amount of city water or the like. Furthermore, since the heating medium is heated by heated waste water, the consumption of thermal energy can be reduced and fuel costs can be saved. Note that when the heat medium passing through the hot water distribution pipe 27 is at a low temperature, the temperature is raised by the auxiliary boiler 2.

FIG. 2 shows another embodiment of the present invention. In this embodiment, a feed pipe 19A that supplies hot water hot water wastewater to the water storage tank 3 is connected to a heat exchanger 50 that is housed inside the water storage tank 3 and is formed by spirally winding a pipe body. The distal end of the heat exchanger 50 is open at a drainage groove 45.

[0023]The snowmelt water stored inside the water tank 3,
A heating medium such as city water is heated by exchanging heat with the heating medium while the heated waste water passes through the heat exchanger 50.

As shown in FIG. 3, both ends of a heat exchanger 52 buried underground and formed by spirally wound pipes are connected to the water tank 3, and a pump interposed in the heat exchanger 52 is connected to the water storage tank 3. P3
By driving, the heat medium stored in the water storage tank 3 may be circulated within the heat exchanger 52, and the heat medium may be heated using geothermal heat. This makes it possible to further improve the heating efficiency of the heating medium in conjunction with the hot water discharged from the hot water supplied to the water storage tank 3 through the feed pipe 19B.

FIG. 4 shows yet another embodiment. In this example, snow melting on the roof R is performed by a roof pipe 55 that is laid over the entire surface of the roof R and through which a heat medium using hot water, liquid such as alcohol, gas such as air, etc. flows. The roof pipe 55 has both ends connected to a heat exchanger 57 which is a spiral pipe housed inside the water tank 3, and a hot water pipe 53 and a water collection pipe 54.
The water storage tank 3 is connected to the hot water supply tank 3 through a feed pipe 19C, and hot water is supplied thereto.

Therefore, while the heat medium passes through the heat exchanger 57,
The heated heat medium is heated by the hot water discharge and is guided to the roof pipe body 55 by the pump P4 interposed in the hot water pipe 53, and the heated heat medium is guided to the roof pipe body 55.
melt the snow that accumulates on the The hot water pipe 53 is provided with an auxiliary boiler 2 that heats the heat medium when the temperature is low, and a switching valve 59 is interposed in the feed pipe 19C, so that when the heated waste water is at a low temperature, the heated waste water is The water is drained through the water pipe 60 into the drainage ditch 45.

[0027]

Effects of the Invention As described above, the roof snow melting device of the present invention heats the heating medium for roof snow melting by the hot water discharged from the hot water supply used inside the house, so that the heated discharged water can be effectively used as snow melting means. Compared to heating snowmelt water directly in a boiler or the like, it is possible to reduce heating costs and achieve energy savings.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a diagram showing another embodiment of the invention.

FIG. 3 is a diagram showing an example of heating a heat medium using geothermal heat.

FIG. 4 is a diagram showing yet another embodiment of the present invention.

[Explanation of symbols]

2 Auxiliary boiler R Roof

Claims (1)

[Claims] 1. A roof snow melting device that heats a heating medium for roof snow melting by hot water discharged from hot water used inside a house, and includes an auxiliary boiler that heats the heating medium.