JP2009207410A - Heating inner wall for agricultural greenhouse - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating inner wall for an agricultural greenhouse, which is intended for decreasing unevenness of temperature distribution in an agricultural greenhouse, and increasing warming effect in a greenhouse so as to reduce a fuel cost. <P>SOLUTION: This heating inner wall 100 for an agricultural greenhouse is supplied with heated air from a heater which is set in an agricultural greenhouse 11. The greenhouse is formed of a double resin sheet material having an area almost the same as that of a side wall 19 along the longitudinal direction of the greenhouse 11, suspended facing both the side walls 19 and 19 in the greenhouse, and having closed upper and lower longer sides and a plurality of welded inside surfaces, The sheet material has one end in the longitudinal direction which is closed excluding an air supply opening 37 to which heated air is supplied, and the other end in the longitudinal direction which is opened. Furthermore, in the heating inner wall, the square resin sheet material is folded half, the folded side part serves as a lower long side part, and the opposite side parts are welded each other to serve as an upper long side part, and the inside surface of the superposed resin sheet materials is preferably welded at a plurality of linear welding places 43. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a heating inner wall for an agricultural house that can be suitably used for an agricultural house in which a heater that heats and blows off air in the agricultural house is installed.

  Agricultural houses have high industrial applicability because they are lighter and less expensive to install than green glass greenhouses for the cultivation of leafy vegetables, root vegetables, flower buds, fruit trees, etc. . Although it is an agricultural house having such excellent advantages, in the winter season or when the temperature drops, a heater may be further installed to warm the house and create a better crop cultivation environment.

  As the heater, a warm air blow type that is generally installed in an agricultural house and heats and blows off the air in the house that has been sucked in is used. A duct (see, for example, Patent Document 1) is circulated in the house room. By supplying heated air to the duct, warm air is sent out from a small hole drilled in the duct to raise the temperature in the house. Normally, these ducts are hung from the floor or suspended from the ceiling. Further, in the house, a circulation fan may be used together so that temperature unevenness does not occur.

The heater is automatically operated by a temperature sensor provided in the house. Therefore, if the temperature in the house is lower than the desired set temperature, it operates. When the temperature in the house reaches the set temperature, it is detected by the temperature sensor, and the operation of the heater is stopped by the control means. And if the house temperature falls below the set temperature due to heat loss from the whole agricultural house, ventilation, entrance / exit, gap, etc., the heater is operated again by the control means, and the heater is turned on until it reaches the set temperature It was in operation.
Japanese Patent Laid-Open No. 2005-17

  However, since the outer wall of the agricultural house is made of only one resin sheet material or glass, it has been difficult to keep the environment in the house uniform because of low heat insulation and shielding properties from the outside air. For this reason, conventionally, in an agricultural house, a warm air duct is arranged along the side wall to prevent a temperature drop, or a vinyl sheet is doubled on the side wall part to make it difficult to be affected by outside air. It was. In particular, the left and right sides and the wife's face are susceptible to the effects of a decrease in outside air temperature, and there is a problem that affects the growth of crops, such as no flowering. On the other hand, if the set temperature of the heater is increased to increase the temperature at the left and right sides and the end face, the temperature at the left and right sides and the end face will rise, but the temperature at the center of the house will be too high, Longer operation time and increased fuel costs.

  The present invention has been made in view of the above situation, and provides a heating inner wall for an agricultural house in which unevenness of temperature distribution in the agricultural house is reduced and a heat retaining effect in the house is increased, and thus the operating time of the heater The purpose is to reduce the fuel cost.

Next, means for solving the above problems will be described with reference to the drawings corresponding to the embodiments.
The heating inner wall for an agricultural house according to claim 1 of the present invention is supplied with heated air from a heater 25 that is installed in the agricultural house 11 and heats and blows off the air in the agricultural house 11 that has been sucked in. A heating inner wall 100 for an agricultural house,
The agricultural house 11 has substantially the same area as the side wall 19 along the longitudinal direction and the end face portion, and is suspended in the agricultural house 11 so as to face both side walls 19, 19. The longitudinal direction and one end of the end face part are closed except for the air supply opening 37 to which the heated air is supplied, and the longitudinal direction and the end face part are formed. The other end is opened.

  In this heating inner wall for an agricultural house, when heated air is supplied from the air supply opening 37, a high temperature inner wall is interposed between the agricultural house side wall 19 and the end face and the inside of the house. Unevenness of the temperature distribution in the house 11 is reduced, and the heat retaining effect in the house is increased. In addition to the outer wall of the agricultural house 11, the side wall and the wife wall are further increased by one. For crops close to the side wall 19 and the wife wall, the shielding property against the outside air is higher than before.

  The heating inner wall for an agricultural house according to claim 2 has a pair of rectangular resin sheet members 35 folded in half so that the bent side becomes the lower long side 33 and a pair of opposite sides of the bent side. The side portions are welded to form the upper long side portion 31, and the in-planes of the overlapped double resin sheet material 35 are welded at a plurality of linear weld portions 43 arranged in a staggered manner. Features.

  In the heating inner wall for an agricultural house, welding of the lower long side portion 33 is omitted by the bent side portion, and there is no risk of strength reduction due to poor welding.

  The heating inner wall for an agricultural house according to claim 3 is characterized in that an inner side surface 100 a is brought into contact with a plurality of columns 47 erected along the side wall 19 in the agricultural house 11.

  In the heating inner wall for an agricultural house, when heated air is supplied, the double resin sheet material 35 separates and expands at a portion other than the welded portion. Of the double resin sheet material 35, the resin sheet material 35 inside the agricultural house 11 comes into contact with the support 47, and the expansion of the inner wall 100 to the inside of the agricultural house is restricted.

  The heating inner wall for an agricultural house according to claim 4 is characterized in that the resin sheet material 35 is provided with a plurality of small holes for discharging the heated air.

  In this agricultural house heating inner wall, heated air is supplied from the air supply opening 37, whereby the inside of the inner wall 100 becomes positive pressure, and part of the heated air is discharged into the agricultural house 11 from the small hole. .

  The heating house inner wall for an agricultural house according to claim 5 is characterized in that the small hole is formed in both of the double resin sheet materials 35 and 35.

  In this agricultural house heating inner wall, the temperature gradient with the outside is reduced by the warm air discharged from the small holes of the outer resin sheet material 35. Further, the warm air discharged from the small holes in the inner resin sheet material 35 stirs the interior of the house with a large number of warm micro exhaust flows.

  The heating house inner wall for an agricultural house according to claim 6 is characterized in that the small hole is formed in only the resin sheet material 35 inside the agricultural house among the double resin sheet material 35.

  In the heating inner wall for an agricultural house, the interior of the house is agitated by warm air exhausted from a small hole in the inner resin sheet material 35. Since the outer resin sheet material 35 is not perforated with a small hole, the amount of leakage of heated air supplied into the inner wall is reduced, and the decrease in the amount of heat transported is suppressed.

  The heating inner wall for an agricultural house according to claim 7 is characterized in that a plurality of drain holes are formed in the lower long side portion 33 along the lower long side portion 33.

  In the heating inner wall of the agricultural house, the dew condensation water generated due to the temperature difference is drained to the outside naturally by gravity through the drain hole between the double resin sheet materials 35 and 35.

  The heating inner wall for an agricultural house according to claim 8, the double resin sheet materials 35, 35 are disposed at the lower long side portion 33 of the double resin sheet materials 35, 35 or in the middle of the height direction. A horizontal winding pipe for winding is provided along the long side portion.

  In this heating inner wall for an agricultural house, when the heating pipe is not required, the hoisting pipe is rotated and raised, whereby the double resin sheet materials 35 and 35 are wound up, and ventilation holes provided on the agricultural house side wall 19 and the like. Appears.

  According to the heating inner wall for an agricultural house according to claim 1 of the present invention, the upper and lower long sides having substantially the same area as the agricultural house side wall and the end face and suspended from facing the four side walls of the agricultural house. Is made of a double resin sheet with the surface welded at multiple locations, and one end in the longitudinal direction is closed leaving the air supply opening to which heated air is supplied, and the other end in the longitudinal direction and the end face portion is open Therefore, by supplying heated air from the air supply opening, a high-temperature inner wall is interposed between the agricultural house side wall / face and the inside of the house, and uneven temperature distribution in the agricultural house The heat retention effect in the house is increased. As a result, the heating operation time of the entire house can be reduced, and the fuel cost can be reduced. Moreover, in addition to the outer wall of an agricultural house, the number of side walls is increased by one, so that the inflow of a draft or the like can be prevented more reliably, and the environment in the house can be kept uniform. Furthermore, the crop close to the side wall has a higher shielding property against the outside air than before, so that low temperature damage does not occur and the crop can grow well.

  According to the heating inner wall for an agricultural house according to claim 2, one rectangular resin sheet material is folded in half so that the bent side portion becomes the lower long side portion, and the pair of opposite side portions are welded to each other. The upper long side part is welded by the linear welded parts arranged in a staggered manner within the surface of the double resin sheet material that is overlapped, so the welding of the lower long side part is omitted by the bent side part. Strength can be increased while forming a flow path without being divided by each welded portion, and the welded portion is staggered, so that the cross section of the sheet does not expand into a cylindrical shape when air is fed, and there is little welding The heating inner wall for agricultural house that is inexpensive and highly durable can be manufactured with good appearance.

  According to the heating inner wall for an agricultural house according to claim 3, the inner surface is brought into contact with a plurality of support columns erected along the side wall and the wife surface in the agricultural house. Even with the expansion, the expansion of the inner wall to the inside of the agricultural house is regulated by the support column, and interference with the crop can be reliably prevented.

  According to the heating inner wall for an agricultural house according to claim 4, the resin sheet material is provided with a plurality of small holes for discharging heated air, so that the heating in the house can be performed uniformly and with high efficiency. .

  According to the heating house inner wall for an agricultural house according to claim 5, since the small holes are formed in both of the double resin sheet materials, the warm air discharged from the small holes in the outer resin sheet material causes the small holes to The temperature gradient can be reduced to increase the heat retaining property, and the warm air exhausted from the small holes in the inner resin sheet material can uniformly heat the house.

  According to the heating inner wall for an agricultural house according to claim 6, since the small hole is formed only in the resin sheet material inside the agricultural house among the double resin sheet materials, the small inner resin sheet material is small. The inside of the house can be heated evenly by the warm air discharged from the holes, and the outer resin sheet material is not provided with small holes, so that the amount of leakage of heated air sent into the inner wall is reduced. And the fall of conveyance heat quantity can be suppressed and the heat retention effect as a heating inner wall can be heightened.

  According to the heating inner wall for an agricultural house according to claim 7, since a plurality of drain holes are drilled in the lower long side portion, the dew condensation water generated by the temperature difference is naturally generated between the double resin sheet materials. Waste water can be removed.

  According to the heating inner wall for an agricultural house according to claim 8, a horizontal hoisting pipe for winding the double resin sheet material on the lower long side of the double resin sheet material or in the middle of the height direction. Therefore, when heating is not required, a double resin sheet material can be rolled up and stored by a hoisting pipe, and ventilation can be performed by a ventilation port provided on the agricultural house side wall.

Hereinafter, preferred embodiments of the heating inner wall for an agricultural house according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of an agricultural house having a heating inner wall for an agricultural house according to the present invention.
The agricultural facility house 11 is a structure in which a sheet material 15 made of a vinyl chloride resin, a polyolefin resin film, or the like is stretched on a framework 13 such as a support pipe, an arch pipe, or a girder pipe. It is formed in the shape of a palm-shaped shape or a semicircular bowl shape when viewed from the front, and is installed as a single building type shown in FIG. 1 or a continuous building type shown in FIG. The agricultural house 11 is installed in the depth direction (perpendicular to the paper surface of FIG. 1), for example, around 100 m depending on the construction site area. In the present embodiment, an example in which the sheet material 15 is stretched on the framework 13 will be described, but the present invention can also be applied to a glass house. Suspension members 21 and 21 such as pipes or wire lines extending in the depth direction are provided in the vicinity of upper portions of both side walls 19 and 19 in the agricultural house 11. In FIG. 1, reference numeral 23 denotes a ridge obtained by raising the soil in a streak form at intervals for planting a crop.

FIG. 2 is a plan view of the agricultural house shown in FIG.
A heater 25 is installed on the front side (the lower side in FIG. 2), which is one end in the longitudinal direction in the agricultural house 11, and the heater 25 heats the air in the agricultural house that has been sucked into the left and right and upper and lower sides. Heated air is blown out to the parent ducts 27 and 27. A plurality of branch ducts 29, 29,... Having a small cross-sectional area extending in the depth direction of the house are connected to the parent ducts 27, 27. The branch duct 29 is provided with a number of small holes (not shown).

  The heater 25 is automatically operated by control means including a temperature sensor (not shown) provided in the house. If the temperature in the house is lower than the desired set temperature, the operation is performed. If the temperature sensor detects that the temperature in the house has reached the set temperature, the operation is stopped by a control means (not shown). When the heater 25 is operated, heated air is sent to each branch duct 29 via the parent ducts 27 and 27, and the heated air is blown out from the small holes of the branch duct 29, thereby increasing the temperature in the house. The branch duct 29 may be arranged over the floor or suspended from the ceiling. In the present embodiment, the parent ducts 27 and 27 and the branch duct 29 are arranged on the floor surface. The automatically stopped heater 25 is operated again by the control means when the agricultural house temperature falls below the set temperature, and is continuously operated until the set temperature is reached.

FIG. 3 is a block diagram showing the front view of the agricultural house heating inner wall shown in FIG. 1 as (a) and the side view as (b), and FIG. 4 is provided with the agricultural house heating inner wall according to the invention. It is a perspective view of a continuous building type agricultural house. FIG. 3A shows a cross section taken along the line AA in FIG.
Agricultural house heating inner wall (hereinafter also referred to as “heating inner wall”) 100 according to the present embodiment is suspended (suspended) on the suspension members 21 and 21 described above. The heating inner wall 100 has substantially the same area as the side wall 19 along the longitudinal direction of the agricultural house 11, and is suspended facing both side walls 19, 19 in the agricultural house. With respect to the suspension member 21, the upper edge of the heating inner wall 100 can be fixed using a latching means (not shown). In the case where the agricultural house 11 is the continuous-building type agricultural house 11A shown in FIG. 4, the heating inner wall 100 is arranged facing the outermost left and right side walls 19, 19, that is, the side walls that are the boundary with the outside air. Is done.

  The heating inner wall 100 is composed of double resin sheet materials 35 and 35 in which the upper and lower long side portions 31 and 33 are closed and the in-plane (inside of the rectangular outer shape) is welded at a plurality of locations. One end in the longitudinal direction is blocked by the joint portion 39 leaving the air supply opening 37 to which heated air is supplied, and the other end in the longitudinal direction is opened as an opening 41. For the resin sheet material 35, for example, a polyolefin film having a thickness of 0.05 to 0.075 mm and having transparency can be used. As the polyolefin film, an agricultural polyethylene film, an agricultural ethylene / vinyl acetate community resin film, or an agricultural polyolefin special film can be used.

  The heating inner wall 100 can be manufactured, for example, by bending one rectangular resin sheet material 35 in half. In this case, the bent side portion becomes the lower long side portion 33, and the pair of side portions opposite to the bent side portion are welded together to become the upper long side portion 31. The overlapping double resin sheet members 35 and 35 are welded by a plurality of linear welds 43 arranged in a staggered manner. In the present embodiment, as shown in FIG. 3A, three air supply passages 45a, 45b, and 45c are formed in the vertical direction by welding at the two linear welded portions 43 in the vertical direction. The air supply paths 45a, 45b, and 45c are communicated to form a flow path.

  According to the heating inner wall 100 manufactured by folding a single rectangular resin sheet material 35 in half as in the present embodiment, the strength is increased while omitting the welding of the lower long side portion 33 by the bent side portion. be able to. Thereby, the heating inner wall 100 which is inexpensive and has excellent durability with a small number of welded portions can be manufactured with good appearance.

  The parent ducts 27, 27 from the heating inner wall 100 are normally connected to the lower part, but can be connected at any height position depending on the installation location. In that case, what is necessary is just to change and join the junction part 39 (binding margin) of an edge part. The joining portion 39 is joined with an adhesive tape, stapler (trade name) or the like. Further, the end portion of the parent duct 27 is only inserted and may not be fixed.

  In the heating inner wall 100, the inner surface 100 a may be in contact with a plurality of support columns 47 erected along the side wall 19. When heated air is supplied to the heating inner wall 100, the double resin sheet materials 35 and 35 are separated and expanded at portions other than the welded portion. Of the double resin sheet materials 35, 35, the resin sheet material (inner surface 100a) inside the agricultural house abuts against the support 47, and the expansion of the heating inner wall 100 to the inside of the agricultural house is restricted. Thereby, interference with a crop can be prevented reliably. In addition, a net, a string, a belt, or the like may be used in addition to the column 47. Moreover, as shown in FIG. 2, it is good also as bending and comprising along the wife surface part from the side wall 19 and comprising.

  The resin sheet material 35 is preferably provided with a plurality of small holes for exhausting heated air. When heated air is supplied from the air supply opening 37, the inside of the heating inner wall 100 becomes positive pressure, and a part of the heated air is exhausted into the agricultural house through the small holes. Thereby, heating in a house can be performed with high efficiency uniformly.

  The small holes can be formed in both of the double resin sheet materials 35 and 35. In this case, the temperature gradient with the outside is reduced by the warm air exhausted from the small holes in the outer resin sheet material 35. That is, heat retention can be improved. Further, the inside of the house is agitated by a large number of micro exhaust flows warmed by the warm air exhausted from the small holes of the inner resin sheet material 35. Thereby, the inside of a house can be heated evenly.

  The small holes may be formed only in the resin sheet material 35 inside the agricultural house among the double resin sheet materials 35 and 35. In this case, the interior of the house is agitated by the warm air exhausted from the small holes of the inner resin sheet material 35. Since the outer resin sheet material 35 is not perforated with small holes, the amount of leakage of heated air sent into the heating inner wall 100 is reduced, and a decrease in the amount of heat transported is suppressed. Thereby, the heat retention effect as a heating inner wall can be heightened.

  In addition, the heating inner wall 100 is good also as only a warm wall surface, without providing a small hole. In this case, the warm air passes through the heating inner wall 100 and is only exhausted from the opening 41. Alternatively, the opening 41 may be closed and a small hole may be provided in one or both of the double resin sheet materials 35 and 35. In this case, by adjusting the total area of the small holes, the heating inner wall 100 can be maintained in an expanded state by the heated air, and a warm heat retaining wall surface can be formed with a small amount of air supply.

  The heating inner wall 100 can be provided with a plurality of drain holes (not shown) in the lower long side portion 33 along the lower long side portion 33. Thereby, the dew condensation water generated by the temperature difference can be drained and removed naturally between the double resin sheet materials 35 and 35.

  Further, a horizontal hoisting pipe (not shown) for winding the heating inner wall 100 may be provided along the long side portion at the lower long side portion 33 of the heating inner wall 100 or in the midway position in the height direction. Thus, when heating is not required or when ventilation is performed in the house, the heating inner wall 100 can be rolled up and stored by the hoisting pipe, and ventilation can be performed by a ventilation port (not shown) provided in the agricultural house side wall 19 or the like. it can.

  Therefore, according to the heating house inner wall 100 for an agricultural house having the above-described structure, it has substantially the same area as the agricultural house side wall 19 and is suspended facing both side walls 19 and 19 of the agricultural house. 31 and 33 are closed and are composed of double resin sheet materials 35 and 35 in which the in-plane is welded at a plurality of locations, and one end in the longitudinal direction is closed while leaving an air supply opening 37 to which heated air is supplied, and the longitudinal direction Since the other end of the direction is opened, by supplying heated air from the air supply opening 37, a high-temperature inner wall is interposed between the agricultural house side wall 19 and the inside of the house, that is, between the outside air and the inside of the house. The side wall 19 and the side wall including the heated air (heating inner wall 100) are interposed at the boundary, reducing unevenness in temperature distribution in the agricultural house and increasing the heat retaining effect in the house. As a result, the heating operation time of the entire house can be reduced, and the fuel cost can be reduced.

  Moreover, in addition to the outer wall of the agricultural house 11, the addition of one more side wall can more reliably prevent the inflow of drafts and the like, and the environment in the house can be kept even. In addition, the crop close to the side wall 19 has a higher shielding property against the outside air than before, and does not cause low-temperature damage, allowing the crop to grow well, improving the harvest rate / yield, and improving the quality. .

Next, specific examples in the above-described embodiment will be described.
In this example, the temperature change in the house when the heating inner wall 100 according to the above embodiment is provided in the agricultural house and the temperature change in the house when the heating inner wall 100 is not provided are shown in winter evening 17 FIG. 5 shows a measurement graph by a thermometer installed in the house from 18:00 to 8:00 the next morning (January 31 to February 1).
According to this graph, a temperature change line showing a state (with heating inner wall: solid line) provided with the heating inner wall 100 as compared to a temperature change line showing a state without heating inner wall (no heating inner wall: broken line). Indicates that the number of peaks and valleys is small, that is, the number of operations of the heater is reduced, and the maintenance temperature in the house is higher by about 1 degree. From this, it can be seen that the heat retention effect in the house is enhanced, and the total heating operation time is reduced, that is, the fuel cost of the heater can be reduced.

It is a front view of the agricultural house provided with the heating inner wall for agricultural houses which concerns on this invention. It is a top view of the agricultural house shown in FIG. It is the block diagram which represented the front view of the heating inner wall for agricultural houses shown in FIG. 1 with (a), and represented the side view with (b). It is a perspective view of the continuous building type agricultural house provided with the heating inner wall for agricultural houses which concerns on invention. It is a graph of the temperature change in a house when not providing with the case where the heating inner wall of this invention is provided.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Agricultural house 19 ... Side wall 25 ... Heater 31 ... Upper long side part 33 ... Lower long side part 35 ... Resin sheet material 37 ... Air supply opening 43 ... Linear welding part 47 ... Strut 100 ... Agricultural house heating Inner wall 100a ... inside surface

Claims (8)

A heating inner wall for an agricultural house that is supplied with heated air from a heater that heats and blows off the air in the agricultural house that is installed and sucked in the agricultural house,
The agricultural house has substantially the same area as the side wall along the longitudinal direction, is suspended from both side walls in the agricultural house, the upper and lower long sides are closed, and the surface is welded at a plurality of locations. A heating inner wall for an agricultural house, comprising a heavy resin sheet material, wherein one end in the longitudinal direction is closed leaving the air supply opening to which the heated air is supplied and the other end in the longitudinal direction is opened.   One rectangular resin sheet material is bent in half and the bent side becomes the lower long side, and the pair of sides opposite to the bent side is welded to become the upper long side, The heating inner wall for an agricultural house according to claim 1, wherein the in-plane surface of the double resin sheet material is welded by a plurality of linear welding portions arranged in a staggered manner.   The heating inner wall for an agricultural house according to claim 1 or 2, wherein an inner surface is brought into contact with a plurality of pillars standing along the side wall in the agricultural house.   The heating inner wall for an agricultural house according to any one of claims 1, 2, and 3, wherein the resin sheet material is provided with a plurality of small holes for discharging the heated air.   The heating inner wall for an agricultural house according to claim 4, wherein the small holes are formed in both of the double resin sheet materials.   The heating inner wall for an agricultural house according to claim 4, wherein the small hole is formed only in the resin sheet material inside the agricultural house among the double resin sheet materials.   The heating inner wall for an agricultural house according to any one of claims 1 to 6, wherein the lower long side portion has a plurality of drain holes formed along the lower long side portion.   A horizontal hoisting pipe for winding the double resin sheet material is provided along the long side portion at the lower long side portion or in the middle of the height direction of the double resin sheet material. The heating inner wall for an agricultural house according to any one of claims 1 to 7.

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