JP2000139237A - Apparatus for melting snow of multi-span greenhouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for melting snow for a multi-span greenhouse capable of effectively melting the snow collected in a valley part of the multi- span greenhouse with a hot-air heater, preventing the collapse due to the weight of the snow and installing the multi-span greenhouse effectively utilizing the cultivated land area even in a zone of snowfall. SOLUTION: This apparatus for melting snow of a multi-span greenhouse is obtained by integrally forming wing parts 14 and 14 tilted into a V shape on both sides of a duct part 13, opening hot-air blowoff ports 15 at a prescribed interval in the longitudinal direction of the duct part 13 on both lateral faces of the duct part 13 located under the wing parts 14, forming a hot-air duct 12 made of a metal, exposing the top surface side of the hot-air duct 12 to the open air, composing a trough 23, arranging the undersurface side of the hot-air duct 12 in the greenhouse, attaching the hot-air duct 12 to a valley part 10 of a roof 9 of the multi-span greenhouse, connecting the lower ends of plastic films 7 for roofs to the tops of the wing parts 14 and connecting the duct part 13 to a hot-air heater 21.

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 for a multi-story house in which a plurality of pipe houses for assembling an agricultural house and the like are provided.

[0002]

2. Description of the Related Art In general, a simple agricultural house using pipes has frame pipes formed in an inverted U shape attached to the ground at predetermined intervals, and the frame pipes are covered with a transparent plastic film. It is assembled in a kamaboko shape. This agricultural house is divided into a single-family house assembled in a kamaboko shape and a continuous kamaboko-shaped continuous house. The multi-story house has no dead space between adjacent houses like a single-floor house, so not only can the cultivated land be used effectively, but it can be cultivated collectively without partitions inside. Good workability. Further, since the wall area is small and the contact area with the outside air is small as compared with the unit cultivation area, there is an advantage that energy can be saved when heating is performed.

[0003] In a single-family house of the Kamaboko type, since the accumulated snow slides down the roof surface, there is little problem that the house collapses due to the weight of the snow. However, since continuous valleys are formed in continuous Kamaboko-shaped houses, there is a problem that snow accumulates in these valleys in the snowfall area and the house collapses due to its weight and collapses. Could not be installed.

[0004] Therefore, when installing a multi-unit house in a snowfall area, a gutter is attached to the valley of the roof of the multi-unit house along the direction of the ridge, and a sprinkling pipe is provided on the gutter to slide down the roof. There is also proposed a structure in which snow collected in a gutter in a valley is melted by water. However, this apparatus is not widely used because it is limited to a place where groundwater can be easily obtained, and it requires a cost for a well moat for pumping groundwater.

For this reason, the present inventor attaches a gutter to the valley of the roof of the multi-story house along the ridge direction, provides a hot water circulation pipe to the gutter, and places a hot air stream near the valley inside the house. We have previously developed and proposed a snow melting device for a multi-family house that has a duct and an outlet that blows out hot air toward the valley from here (Japanese Patent Application No. 10-73436).

However, this structure requires at least two devices, a hot air heater for heating the greenhouse and a boiler for heating the hot water flowing through the hot water circulation pipe, resulting in an increase in equipment costs and operating costs. . In addition, when the outside air drops to zero in a state where the operation is stopped while hot water is not flowing through the hot water circulation pipe, there is a problem that the water in the pipe freezes and it takes time to start operation.

[0007]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and efficiently melts snow accumulated in a valley of a multi-story house with a hot air heater to prevent collapse due to the weight of the snow. It is an object of the present invention to provide a snow melting device for a multi-facility house that enables installation of a multi-facility house that can effectively use the cultivated land area even in a snowfall area.

[0008]

According to a first aspect of the present invention, there is provided a snow melting apparatus for a multi-story house, wherein a wing portion inclined in a V shape is integrally provided on both sides of the duct portion to form a metal hot air duct. The upper surface side of the hot air duct is exposed to the outside to form a gutter, and the lower surface side is arranged in a greenhouse, and is attached to a valley of a roof of a multi-unit house. The lower end of the film is connected, and the duct is connected to a hot air heater.

According to a second aspect of the present invention, there is provided a snow melting apparatus for a multi-story house, wherein wings inclined in a V shape are integrally provided on both sides of the duct, and the wings are provided on both sides of the duct located below the wing. Opening the hot air outlet at predetermined intervals along the longitudinal direction to form a metal hot air duct, and exposing the upper surface side of this hot air duct to the outside to constitute a gutter,
The lower surface side is placed in the greenhouse, attached to the valley of the roof of the multi-unit house, the lower end of the film for roof is connected to the upper part of the wing part, and the duct part is connected to the hot air heater. It is a feature.

Further, in the snow melting apparatus for a multi-family house according to the third aspect, a fixing portion for a film for a roof is integrally formed on an upper portion of the wing portion.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIG.
This will be described in detail with reference to FIG. In the figure, reference numeral 1 denotes an inverted U-shaped frame pipe, which is formed by connecting a roof pipe 1a curved in an arch shape and a straight pillar pipe 1b with a pipe joint 2. Reference numeral 3 denotes an underground foundation buried in the ground, on which a foundation 4 formed of a C-shaped channel material is mounted, and a half-cylindrical insertion fitting 5 is provided on this side surface at intervals of about 40 to 50 cm. Welded here and the pillar pipe 1b
Is inserted into the lower end of the frame pipe 1 to assemble the frame pipe 1.

The adjacent frame pipes 1, 1 are:
The pillar pipes 1b, 1b standing upright in the valley 10 are connected by connecting fittings 6,6. This frame pipe 1,
After assembling 1, the plastic film 7 is attached from above to complete a double-unit connected building. The structure up to this point is the same as the conventional one, but in the present invention, a hot air duct 12 made of metal such as aluminum extruded material is attached to the valley 10 of the roof 9 of the multi-story house along the ridge direction. ing.

As shown in FIG. 2, the hot air duct 12 is formed by integrally extruding wings 14, 14 having a V-shape on both sides of a duct 13 having a circular cross section, as shown in FIG. The hot air outlets 15 are provided at predetermined intervals along the longitudinal direction on both sides of the duct 13 located below the
... are opened. Further inclined wing parts 14, 1
At the upper edge of the roof 4, fixing portions 16, 16 of a roofing film having a narrow opening are integrally formed along the longitudinal direction.

As shown in FIG. 3, the hot air duct 12 is mounted on a pipe fitting 2, 2 mounted on the upper part of the column pipes 1b, 1b standing on the valley 10, and a support fitting 18 is provided. Further, support fittings 19, 19 are connected to the roof pipes 1a, 1a connected on the pipe joints 2, 2, respectively. A metal plate is placed on these support brackets 18 and 19 by U
A connecting portion support plate 20 curved in a shape is attached.
The connecting portion support plate 20 is formed to have a length of 20 to 30 cm, and joins the end portions of the hot air ducts 12 and 12 having a length of about 3 m, and places and supports the joined portion. .

The hot air duct 12 is connected to the lower surface of the V-shaped wings 14 and 14 by bolts to a support fitting 19 via a connecting portion support plate 20. Therefore, hot air duct 1
The joints 2 and 12 are supported on the joint support plate 20,
The intermediate portion is not supported by the connecting portion support plate 20 as shown in FIG. The hot air duct 12 is attached at an angle, and a hot air heater 21 is connected to the end of the duct, as shown in FIG. 1, so that hot air flows inside.

As shown in FIG. 3, the fixing portions 16 of the film for the roof are provided on the upper edges of the inclined wing portions 14, 14.
16 is integrally formed, the lower end of the plastic film 7 is inserted through the opening and fixed with a stopper, and
Is configured. Therefore, the hot air duct 12 inclined at the valley portion 10 has its upper surface exposed outside and the gutter 23
Are formed, and the lower surface side is disposed in the greenhouse, and the hot air outlets 15 are provided on both side surfaces of the duct portion 13 at predetermined intervals.
Are located below the inclined wing portions 14, 14.

As shown in FIG. 1, in the snow melting apparatus having the above structure, when snow falls in winter and piles up on the roof 9 of the multi-unit house, the snow 24 piled up on the roof 9 of the multi-unit house has a hot air heater inside. Heated at 15, the temperature is high, and the surface is covered with a smooth plastic film 7 to form an inverted U shape, so that it slides down. There is no problem with the snow 24 sliding down to the side surface, but the snow 24 sliding down to the valley side accumulates on the gutter 23 of the valley portion 10.

The gutter 23 is connected to the duct portion 1 of the hot air duct 12.
3 is heated on the inside by the hot air from the hot air heater 21 flowing therethrough.
3 is melted, and the melted water is
Is discharged by. The snow 24 in contact with the duct 13 serving as the bottom of the gutter 23 is efficiently melted, but a hollow portion is gradually formed inside the piled snow 24 to reduce the snow melting effect.

For this reason, in the present invention, warm air is blown out from the warm air outlets 15 opened on both side surfaces of the duct portion 13. That is, when the warm air flowing through the duct portion 13 blows out from the warm air outlets 15 and rises, the warm air hits the wing portions 14, which are provided to be inclined upward, and is heated. Further, since the inclined wing portion 14 is formed integrally with the duct portion 13, the wing portion 14 is simultaneously heated by the heat conduction therefrom.

When the wings 14 are heated, the snow 24 in contact with the wings 14 is melted, becomes a sherbet-like shape, is easily slid, and slips down to the bottom of the gutter 23.
As a result, since the hollow portion is eliminated and is always in contact with the duct portion 13, it is possible to rapidly melt snow. In this case, when the temperature of the inclined wing portion 14 becomes about 7 ° C., the accumulated snow 24 tends to be sherbet-like at the contact surface. When the apparatus of the present invention was tested in a multi-unit house installed in a field in a snow-covered area of 2 m or more, it was confirmed that even if sharks of 30 cm or more fell overnight, the snow could be efficiently melted and the multi-unit house could be prevented from collapsing. Was. In the above description, the structure in which the connecting portion of the hot air duct 12 is supported by the connecting portion support plate 20 has been described. However, the hot air duct 12 may be supported only by the support metal 19 without providing this.

FIG. 5 shows another embodiment of the present invention, which is a hot air duct 12 in which a hot air outlet 15. This is a hot air duct 12
Since the duct 13 and the wings 14 and 14 are integrally formed of a metal such as aluminum, the heat conductivity is good, and the wings 14 and 14 which are inclined by the heat of the warm air flowing through the duct 13 are simultaneously heated. Then, the snow 24 in contact therewith can be melted into a sherbet shape and dropped to the bottom.

6 to 8 show another embodiment of the present invention. FIG. 6 shows a hot air duct 12 in which an upper portion of a duct portion 13 is formed in a circular shape and a lower portion is formed in a square cross section. It is. FIG. 7 shows the duct 13 formed in a square shape.
Further, FIG. 8 shows a case where the upper surface of the duct portion 13 is made flat and a plurality of continuous projections 25 are formed here, and the lower side is formed in a V shape. The contact area of the projection 25 with the snow 24 is increased, and the snow can be melted more efficiently.

[0023]

As described above, according to the snow melting apparatus of the first aspect of the present invention, a gutter formed by a hot air duct is provided in a valley of a multi-family house, and the snow collected here is heated by a hot air. In addition to melting the snow in the duct, the wing section provided in the hot air duct is heated and the snow that comes in contact with it is made into a sherbet and slides down to prevent the formation of cavities and efficiently melt the snow and collapse the multi-story house Can be prevented.

In addition, the cultivated land area can be effectively used and the workability is good. In addition, since the snow melting can be used also as a hot air heater for heating the greenhouse, the equipment cost is low, the energy saving of the heating can be achieved, and the snow melting area can be used. It is possible to set up a multi-story house.

In the snow melting apparatus according to the second aspect of the present invention, since the hot air outlets are opened on both sides of the hot air duct, when the hot air flowing in the duct portion blows out and rises,
The wings are heated by hitting the wings that are inclined upward, and the snow can be melted more efficiently. Further, in the snow melting apparatus according to the third aspect, since the fixing portion of the roof film is integrally formed on the upper portion of the wing portion, the work of attaching the plastic film is easy.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a snow melting apparatus for a multi-unit house according to an embodiment of the present invention.

FIG. 2 is a perspective view of a hot air duct provided in a valley of the multi-unit house shown in FIG.

FIG. 3 is an enlarged sectional view showing a main part of a snow melting device provided in a valley of the multi-unit house shown in FIG. 1;

FIG. 4 is a cross-sectional view showing a state where snow accumulated in the snow melting apparatus shown in FIG. 2 is being melted.

FIG. 5 is a perspective view showing a hot air duct according to another embodiment of the present invention.

FIG. 6 is a sectional view showing a hot air duct according to another embodiment of the present invention.

FIG. 7 is a sectional view showing a hot air duct according to another embodiment of the present invention.

FIG. 8 is a sectional view showing a hot air duct according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame pipe 1a Column pipe 1b Roof pipe 2 Pipe joint 4 Foundation 7 Plastic film 9 Roof 10 Valley 12 Hot air duct 13 Duct section 14 Inclined wing section 15 Hot air outlet 16 Roof film fixing section 18 Supporting bracket 19 Supporting bracket 20 Connecting portion support plate 21 Hot air heater 23 Gutter 24 Snow

Claims (3)

[Claims] 1. A metal hot air duct is formed by integrally providing V-shaped inclined wing portions on both sides of a duct portion, and an upper surface side of the hot air duct is exposed outside to form a gutter. , The lower surface side is placed in the greenhouse, attached to the valley of the roof of the multi-unit house, the lower end of the film for the roof is connected to the upper part of the wing, and the duct is connected to a hot air heater. A snow melting device for multi-family houses. 2. A wing portion inclined in a V-shape is integrally provided on both sides of the duct portion, and hot air is blown at predetermined intervals along the longitudinal direction on both side surfaces of the duct portion located below the wing portion. Open the mouth to form a metal hot air duct,
The upper surface side of this hot air duct is exposed outdoors to form a gutter, and the lower surface side is placed in a greenhouse, attached to a valley of a roof of a multi-unit house, and a roof film is provided above the wing portion. A snow melting device for a multi-unit house, wherein a lower end is connected and the duct is connected to a hot air heater. 3. The snow melting apparatus for a multi-family house according to claim 1, wherein a fixing portion of the film for roof is integrally formed on an upper portion of the wing portion.