JPS63134764A - Hot air blow-off type snow melting apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention includes a blow-off pipe provided with a slit-shaped blow-off port, and effectively blows snow away by hot air blown out from the blow-off port in the form of an air curtain. This invention relates to a hot air blowing type snow melting device designed to melt snow.

(Conventional technology) In snowy regions, removing snow from roofs is hard work.
Particularly in densely populated areas, the added hassle of transporting the fallen snow to a snow disposal site is extremely costly. Furthermore, shoveling snow is extremely dangerous, and falls are not uncommon. For this reason, various methods have been proposed to remove snow from roofs without relying on human hands. The main methods include installing water pipes on the ridge of the roof and melting snow by sprinkling water from water holes drilled in the pipe, and also on the back side of roofing materials such as roof tiles and iron sheets. There is a method of installing heating elements such as hot water pipes and sheet heating elements (sheet-shaped heating elements that generate heat in a sheet).

However, such snow melting methods have the following problems, especially when used for tiled roofs. In other words, in the case of a method using water pipes, when water is sprinkled in snowy conditions, it is possible to melt the snow near the sprinkled area, and the water flowing through the concave surface of the roof tile can melt the snow that comes into contact with the concave surface. However, parts that are not affected by water, such as both sides of the tile and the -F side of the concave part of the tile, do not melt into a bridge shape as shown in Figure 6. The remaining snow remained (see symbol a in Figure 6), indicating that snow melting was incomplete.

On the other hand, in the method of installing a heating element such as a hot water pipe or a sheet heating element on the back side of the roof tile, in order to melt the snow on the roof tile, the temperature of the entire tile must be higher than the temperature required for snow melting. Considering the need for heating and the large heat capacity of roof tiles, there was a problem of very poor thermal efficiency and high heating and electricity bills, and if a snow sensor was built into the device, However, even if the snow sensor detects that snow has fallen, it takes a considerable amount of time for the temperature on the tile surface to reach a temperature that allows snow melting, so there is a problem that the snow melting effect is not fast enough. .

The present invention was developed primarily to solve the above-mentioned problems in snow melting on tiled roofs.

(Means for Solving the Problems) The hot air blowing type snow melting device (hereinafter referred to as the device) according to the present invention blows heated air into a blowing pipe 9 connected to a hot air generation source. It is characterized by providing a slit-shaped outlet 17 for blowing out air in a curtain-like manner.

In the present invention, "blowing out warmed air from the slit-shaped outlet in an air curtain shape" means blowing out the heated air substantially evenly over the entire length of the slit-shaped outlet. It is used in the sense of causing.

(Function) When the warm air generation source is operated, warmed air is blown out in an air curtain shape from the outlet 17 provided in the outlet pipe 9, and the heat retained in the air effectively melts the snow. It will be done.

(Example) Hereinafter, an example of the present invention will be described based on the drawings, taking as an example a case in which the present invention is applied as a snow melting device installed on a tiled roof.

In FIGS. 1 to 4, the device 1 of the present invention has an air outlet as a branch pipe mounted on the side surface 5 of the main pipe 3 installed along the ridge 2, and on the concave surface 7 of each row of tiles 6. The upper end lO of the pipe 9 is connected, and the main pipe 3 is connected to a hot air generation source. In order to prevent heat loss as much as possible, the main pipe 3, the blow-off pipe 9, etc. are made of a suitable heat-insulating material, and are covered with a heat-insulating material if necessary.

The main pipe 3 is formed, for example, as a cylindrical pipe, one end of which is sealed, and the other end connected to the hot air source via a conduit 11 (see FIG. 1). In addition, the side surface portion 5 has a joint portion 12 corresponding to each tile row 6.
... has been destroyed. The main pipe 3 is removably installed along the cough ridge 2 on one or both sides of the ridge 2.

For example, as shown in FIGS. 2 to 4, the blowoff pipe 9 is formed as a pipe body with an elliptical cross section that can be inserted through the through hole 15 of the snow stopper part 13 of the roof tile. As a result, each blow-off pipe 9 is stably fixed in the snow stopper part 13), its lower end is sealed 16, and its upper end 10 is connected to the joint part 12 of the main pipe 3. There is. In this embodiment, the connection is detachable. In addition, on both sides of the blow-off pipe 9, there are slit-shaped blow-off ports 17 that open toward the sides for blowing out heated air in the form of an air curtain (see the arrow shown in FIG. 4). Setting C) h. The outlet 17 has a width of about 21, for example, and is provided over the entire length of the outlet pipe 9. As shown in FIG. They may be arranged in parallel in the length direction of the blow-off pipe 9 via the discontinuous portion 19 .

The hot air generation source is a blower that sends air heated by an electric heater, a hot water boiler, exhaust heat from a house, etc., or a heat source such as geothermal heat, to each outlet pipe 9 through the main pipe 3. do.

In this embodiment, when a snow sensor (not shown) detects snowfall, the warm air generating source is immediately activated in response to the detection signal.

However, in the device 1 according to the present embodiment, the heated air source is activated by the detection of the snow sensor, and thus heated air is discharged from the slit-shaped outlet 17 provided on both sides of the outlet pipe 9. The fourth part blows out like an air curtain.
(see arrows in the figure), the retained heat of the air is directly and evenly applied to the snow on the tile surface, and at the same time, it warms the tile surface almost evenly, resulting in the snow falling on the roof surface. is approximately average −
Moreover, it melts quickly.

Furthermore, the device 1 of the present invention works effectively even when a certain amount of snow has accumulated on the roof surface. That is, since the device of the present invention adopts a hot air blowing method, not only is the influence of the hot air exerted in various directions around the blow-off port 17, but also the heat retained by the hot air is stored on a wide range of tile surfaces. Therefore, it is completely different from the case using the watering method described above, and as shown in Figure 6 (
Snow on the roof surface can be effectively melted without leaving snow in the form of bridges.

In addition, in the device according to the above embodiment, the main pipe 3 is removable and the main pipe 3 and the blowout pipe 9 are separable, so when it is not needed, the device can be easily removed from the roof by disassembling it. can be removed. Therefore, −
Not only does this eliminate problems such as deterioration of the aesthetic appearance of the roof, which is the case with conventional sprinkler-type snow melting equipment that remains installed all year round, but it also extends the life of the equipment.

In the apparatus described in the above embodiment, the hot air source may be housed in the main pipe for the purpose of making the entire apparatus more compact. Also, the slit-shaped outlet may be provided only on one side of the outlet pipe if the desired snow melting can be achieved.

Further, the temperature of the warm air is arbitrarily set within a range that can melt snow, taking into account the arrangement of the blow-off pipes, the amount of snow to be melted, etc., and is not necessarily fixed at a constant temperature.

Further, when the device of the present invention is installed on a roof, it is not necessarily installed over the entire surface of the roof, but may be installed partially in areas where it is difficult to remove snow, for example.

In addition, when using the device of the present invention especially for the purpose of melting snow on roofs, by setting the length of the main pipe and the length of the blow-off pipe to a unit length, the main pipe can be easily melted regardless of the size of the building. It is convenient because a desired device can be easily constructed by interconnecting a plurality of or a plurality of blowout pipes.

The device of the present invention can be configured to be compact and easy to carry by attaching a small hot air generator (hot air source) to one end of the blow-off tube.

(Effects of the Invention) As a result of the device of the present invention having a basic configuration that melts snow by hot air blown out in the form of an air curtain, unlike snow melting by conventional watering methods, the influence of the warm air is centered around the outlet. Because it covers a wide area, the heat it retains can effectively melt snow.

In particular, when the device of the present invention is used for melting snow on a tiled roof, its effects will be most noticeable. In other words, the heat retained by the hot air blown out in an air curtain-like manner is given to the snow on the tile surface, and the heat is stored on the tile surface.
Snow on the roof is effectively melted. Moreover, unlike the conventional case where a heating element is installed on the back side of a roof tile, the heat of the hot air is directly applied to the snow, and the hot air directly warms the surface of the tiles. Snow melting can be started immediately by blowing, and snow melting is fast-acting. In addition, there is no waste of heating the entire tile, which has a large heat capacity, resulting in extremely high thermal efficiency (and excellent energy saving effect).Also, since the influence of warm air is spread over a wide area, it is possible to reliably melt snow even in snowy conditions. Therefore, unlike snow melting using a water sprinkling method, there is no inconvenience such as unmelted snow remaining in the form of bridges (see Figure 6).

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the device according to the present invention, FIG. 2 is a perspective view showing a connection state between a main pipe and a blow-off pipe, and FIG.
Figure 4 is an explanatory view showing the fixed state of the blow-off pipe, Figure 4 is an explanatory view of the operation of the present invention, Figure 5 is a perspective view showing another example of the blow-off pipe, and Figure 6 is the roof surface of a snow melting device using a water sprinkling method. It is a sectional view explaining the snow melting state in . DESCRIPTION OF SYMBOLS 1...Device, 9...Blowout pipe, 17...Blowout port. Patent Applicant: Fukubi Chemical Industry Co., Ltd. Agent, Patent Attorney: Kiyoshi Okamoto - Divisional Proceedings Amendment 4 (spontaneous): Director General of the Patent Office: Kunio Ogawa1, Indication of the Case, Patent Application No. 281529, filed in 1988, 2, Name of the Invention: Wind blowing type snow melting device 3, relationship with the case of the person making the amendment Patent applicant address 33-66, Misohesha-cho, Fukui City, Fukui Prefecture Name (AO6) Fukubi Chemical Industry Co., Ltd. 1 Owner Kuma Yagi Kichi 4, Deputy
Person 6, content of amendment fi+ Clear 1t' [Book 1, page 1, line 16, ``(prior art)'' is amended to ``(prior art and the problem to be solved by the invention ω'').

Claims (1)

[Claims] A hot air blowing type snow melting device characterized in that a blowing pipe 9 connected to a hot air generating source is provided with a slit-shaped blowing outlet 17 for blowing out heated air in an air curtain shape.