JP2015002726A - Plant cultivation greenhouse for cold regions - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant cultivation greenhouse that effectively collects solar heat into the greenhouse to ensure temperature rise in the greenhouse and is capable of raising farm products through the entire year without using a large amount of fossil fuel.SOLUTION: There is provided a plant cultivation greenhouse for cold regions in which inclination of a roof slope is made steep, a roof has rectangular cross section in a longitudinal direction over the entire roof, and sidewalls are made perpendicular. A roof part in the longitudinal direction of the plant cultivation greenhouse and a sidewall part are covered by a double transparent and/or a translucent frame forming film, an air suction duct that sucks high-temperature air is provided for an upper part of a ceiling of the roof having rectangular cross section in a longitudinal direction, high-temperature air taken into the air suction duct is sent to a heat exchange coil of a heat storage water storage tank, air in the greenhouse is stirred by the air after heat exchange, warmed-up water in the heat storage water storage tank is supplied to a heating pipeline that is laid in the ground of a cultivation ridge in the plant cultivation greenhouse, and the cultivation ridge in the greenhouse is heated.

Description

  The present invention relates to a plant cultivation house for cold districts that can efficiently utilize solar heat and cultivate plants such as agricultural crops with energy saving even during snowfall.

Conventionally, during the winter season in Tohoku and Hokkaido, which are snowy cold regions, it is almost impossible to cultivate plants such as crops in the open field, and vinyl that makes use of the heat energy of solar rays by constructing houses with transparent glass and vinyl film Cultivate crops using the house. However, the weather conditions for the five months from November to March in the cold snowy region are almost impossible for conventional greenhouse (greenhouse) cultivation with solar energy alone.
By the way, in a conventional house (greenhouse) covered with a single vinyl film, the temperature rise is not sufficient due to the outside air temperature, and it is difficult to secure the temperature inside the house at night. Houses are also disclosed in Patent Document 1 and Patent Document 2 by the present applicant.

Also, in cold areas such as Kushiro and Wakkanai in Hokkaido, it was difficult to harvest strawberries, melons, and tomatoes even if a conventional house was used for summer cultivation. For this reason, in order to prevent low temperature damage at night, we are trying to cultivate the house (greenhouse) throughout the year using fossil fuel.
Furthermore, the applicant has also proposed, as Patent Document 3, cultivation of a greenhouse (greenhouse) in which plants can be cultivated even in the winter in snowy and cold regions.
In addition, solar heat is effectively collected in the house to ensure an increase in the temperature in the house, and the high-temperature air in the ceiling that has increased in temperature is used efficiently, with little use of fossil fuels, and throughout the year. Patent application 4 proposes a plant cultivation house for cold districts where plants such as agricultural crops can be cultivated.

JP 2007-285562 A JP 2010-38459 A Japanese Patent Application No. 2010-48420 Japanese Patent Application No. 2012-179031

However, in the above-mentioned Patent Document 4, solar heat is effectively collected in the house to ensure a temperature rise in the house, and a high amount of fossil fuel is produced by efficiently using the high-temperature air in the ceiling portion where the temperature has risen. It is a plant cultivation house for cold districts that can cultivate plants such as agricultural crops throughout the year with little use, but in order to warm the water in the water storage tank, the high temperature air accumulated in the ceiling of the house is blown through Is supplied to the bottom of the stored water in the water storage tank, the high-temperature air is released into the water from the opening at the bottom of the water storage tank of the blower pipe, and the high-temperature air becomes bubbles to warm the surrounding water efficiently.
However, it has been found that it is necessary to provide a fan or a pump having a considerably large blowing power in order to blow high temperature air to the bottom of the stored water in the water storage tank. It was also found that, especially at night, when the ground surface cools, the cultivated straw also cools, which consumes a lot of heat energy. Furthermore, fossil fuel is also used as a heating means in cold weather, and it is necessary to reduce this as much as possible.

  The subject of the present invention was made in view of the above problems, and in a plant cultivation house, solar heat was effectively collected in the house to ensure a temperature rise in the house, and the temperature of the ceiling portion where the temperature rose was high. Use air efficiently, reduce the burden of blowing high temperature air, and stir the air in the house to stimulate plants and promote strong growth, use less fossil fuel, An object of the present invention is to provide a plant cultivation house for cold regions where heat is prevented from being taken and plants such as crops can be cultivated throughout the year.

  In order to solve the above-mentioned problems, the invention of claim 1 is a plant cultivation house for cold districts where the slope of the roof slope is steep, the whole has a triangular roof in the longitudinal direction and the side walls are vertical. The roof portion and the side wall portion in the longitudinal direction of the plant cultivation house are covered with a double transparent and / or translucent frame forming film, and the roof portion which is mostly shaded during the day is internally sunlit. A reflective film that reflects light is provided, and an air suction duct that sucks high-temperature air in the longitudinal direction is provided at the top of the roof of the triangular roof. The high-temperature air taken in the air suction duct is blown to the high-temperature air. Is passed through the heat exchange coil of the heat storage water tank, the air after passing is discharged into the house, the air in the house is stirred, and the warm water of the heat storage water tank is cultivated in the plant cultivation house Supplied to the heating pipe Circulate water warmed 培畝 to the heat storage reservoir, between the said cultivation ridges and surface a plant cultivation house for cold areas, characterized in that interposed insulation.

The invention according to claim 2 is characterized in that the heat storage water tank for supplying warm water is provided with a low-temperature water heater to further heat the warm water as necessary. It is a local plant cultivation house.
According to a third aspect of the present invention, a solar water heater is provided outside the house, and the hot water heated by the solar water heater is supplied to a second heat exchange coil provided in the heat storage water tank and circulated to thereby store the heat. The plant cultivation house for cold regions according to claim 1 or 2, wherein the water in the aquarium is warmed.
The invention according to claim 4 is characterized in that a reflective film that reflects sunlight is provided inside a roof part that is mostly shaded during the day. It is a plant cultivation house for cold regions.
The invention according to claim 5 is characterized in that the side surface and bottom surface of the cultivated straw are wrapped with a film, and a drainage pipe that opens to the outside is provided in a part of the side portion near the bottom surface. A plant cultivation house for cold regions according to claim 2 or claim 3.

According to the plant cultivation house for cold districts of claim 1 of the present invention because it is configured as described above, since the roof is steep, the snow that accumulates on the roof in winter is likely to fall naturally, In addition to increasing the amount of solar rays secured, high-temperature air near the ceiling in the house can be collected in a narrow area, and the high-temperature air collected at the top of the ceiling with a triangular cross-section is passed through the heat exchange coil of the heat storage tank to temporarily store heat. Heat is stored in the water tank, the air after heat exchange is released into the house, the air is agitated to stimulate the plant to promote strong growth, and the use of heat exchange coils reduces the addition of air blowing.
In addition, the warm water in the heat storage tank is supplied to the heat exchanging pipe for cultivation soil buried in the cultivation basket at the bottom of the plant cultivation house, and the plant can grow in winter by warming the cultivation basket and keeping it warm at night to some extent, In addition, it uses less fossil fuel, saves fuel for low-temperature water heaters, prevents heat from being lost to the ground surface, and can be used for plant cultivation such as crops throughout the year. A cultivation house becomes possible.
Therefore, fossil fuels are mainly used for heating at night in conventional houses, etc., and the cultivation cost is high, and year-round cultivation is inappropriate.However, the present invention is more effective than the conventional apparatus in preventing cold weather and effectively using solar heat. The basic room temperature is high and the cultivation cost is low. Moreover, since it becomes possible to cultivate even in snowy and cold regions that were previously unsuitable for cultivation, local productivity can be improved and local products can be supplied to consumers.

According to the plant cultivation house for cold districts of claim 2, in addition to the effect of claim 1, the cold damage of the plant can be prevented by operating the low-temperature water heater especially on the date and time when it becomes cold. .
According to the plant cultivation house for cold districts of claim 3, solar water heaters are provided for heating the heat storage tanks, but in Hokkaido, etc., the latitude is the same as in Munich, etc. Since the angle of the solar water heater is relatively large and heating of the solar water heater is effective, the addition of the solar water heater can further increase the temperature of the heat storage tank with energy saving.
According to the plant cultivation house for cold districts according to claim 4, since the reflective film for reflecting sunlight is provided inside the roof part which is mostly shaded during the day, the sunlight diffusing outside is planted. Since it is confined to the cultivation house, it can efficiently capture solar energy and brighten the house uniformly and reduce the growth spots of plants.
According to the plant cultivation house for cold districts according to claim 5, in addition to covering the bottom surface of the cultivation basket with a heat insulating material, the side and bottom surfaces are wrapped with a film, so that heat release is reduced, and extra water is added. Water can be drained from a drain pipe provided on a part of the side near the bottom surface, preventing plant root rot and the like.

The external appearance perspective view from the northwest side in Example 1 of the present invention, A longitudinal sectional view explaining the whole plant cultivation house, A cross-sectional view from the side of the plant cultivation house of FIG. The top view explaining the installation state of the heat exchange piping for soil cultivation of FIG. FIG. 2 is an enlarged view of the cultivation basket B in FIG. [Table 1] is a table of the snow fall situation when there is a 13cm snowfall at night, and [Table 2] is a table of the snow fall situation when there is a 20cm snowfall at night.

  A plant cultivation house for cold regions that efficiently absorbs and accumulates solar heat enables plant cultivation such as agricultural crops throughout the year.

[Example 1]
Example 1 of a suitable plant cultivation house of the present invention will be described with reference to the drawings.
[House appearance]
As shown in the perspective view of FIG. 1 and the cross section of FIG. 2, the plant cultivation house 1 which is a vinyl house and a greenhouse of the present embodiment is premised to be laid in a cold region, and the slope of the roof slope is steep and the whole Has a roof with a triangular cross section in the longitudinal direction and the side walls are vertical.
This is because the snow is accumulated on the roof portion 11 of the plant cultivation house 1 in the winter season in the cold regions of Hokkaido and Tohoku region, so that the triangular roof 11 is made steep so as to eliminate the need for snow lowering work. The value of the slope of this roof is the result of the experiment in [Table 1] of the snow fall situation at the time of 13 cm snowfall in Fig. 6 (a) and [Table 2] of the snow fall situation at the time of 20 cm snowfall in Fig. 6 (b). As shown in the figure, it was found that if the opening of both vinyl roofs is less than 120 degrees, it will fall naturally, but if it is too steep, it is not preferable because it will expend costs and labor for construction and maintenance, and it will be extremely cold At night, it is clear that there is less temperature drop in the house if there is snow on the roof. Ideally, it is better that there is snow on the roof at night, until about 9 am when sunlight hits the roof. I also found it better to have snowfall.

From [Table 1] and [Table 2] in FIG. 6, it can be seen that at a roof opening degree of 95 degrees, there is no accumulation of snow even at night, and even when the snow accumulated at night is 20 cm, It can be seen that 100% snow falls at a degree, but even at 9 am, if the roof opening is 120 degrees, the snow remains 14 cm, and at 130 degrees, the snow remains as much as 20 cm.
The opening degree of the triangular roof 11 having a triangular cross section of the present invention is set to an angle of 115 to 95 degrees, and if it is set to be inclined, the range of 57.5 to 47.5 degrees is good. In this embodiment, The opening degree is 105 degrees and the inclination is about 52.5 degrees.
The height of the plant cultivation house 1 is 1.8 m at the side wall portion 12 of the vertical portion facing north and south, and the total height to the roof top portion 111 of the roof portion 11 of the triangular roof is 3.7 m. The opening degree of the triangular roof 11 described above is narrow, as will be described later, in an optimal shape for collecting high temperature portions that accumulate in the upper space X1 of the ceiling in the greenhouse.
As shown in FIGS. 2 and 3, a ceiling air passage 113 is provided at the top of the roof top 111 in the plant cultivation house 1, and a damper 114 that circulates air and moisture as necessary is provided at an appropriate place. A damper 116 is also provided on the vertical wall surface 115 in the southwest, and these dampers 114 and 116 control the amount of ventilation by controlling opening and closing manually or with a remote controller.

  The overall outline of the plant cultivation house 1 of Example 1 is a long and narrow plastic house with a cross-sectional roof portion 11 having a triangular shape and a longitudinal direction facing east-west (EW), having a total length of 40 m and a width of 5 m. is there. Basically, as shown in FIG. 1, the ground surface G is provided with a base portion 13 having a total length of 40 m and a width of 5 m, but a rectangular base frame 131 is constructed as a whole and shown in FIGS. 1 and 2. As shown in the figure, the outer frame vertical poles 14 are set at equal intervals, and a straight outer frame horizontal pole 15 is stretched over the frame to form a frame. Further, the skew pole 16 of the roof portion 11 is hung on the frame. A reflective film that covers the double inner film 3 and the outer film 2 that are frame forming films in a state of being spaced apart, and reflects sunlight in the north roof portion 112 that is mostly shaded during the day. 4 (reflecting mirror) is affixed, and the side wall surfaces SD on both sides facing the vertical north and south are also covered with the double inner film 3 and the outer film 2 with a gap. Further, a reflection film pressing lateral pole 17 is provided on the outside of the roof so as to cover and fix these films.

  The rectangular base frame 131 is a large rectangle as a whole as shown in the plan view of FIG. 4, and the rectangular base frame 131 is shown in an enlarged perspective view of a corner portion of the base frame 131 of FIG. Fixing members for anchor bolts are provided at appropriate positions 131, and are fixed to the ground surface G with anchor bolts or the like. Furthermore, the rectangular base frame 131 is provided with pole support members 132 that are vertically arranged at substantially equal intervals, and the outer frame skew vertical poles 16 that form a triangular roof on the opposed pair of pole support members 132 are sequentially arranged. The outer frame skew vertical pole 16 is inserted to complete the frame, and the outer frame horizontal pole 15 (see FIG. 1) is passed to the outer frame skew vertical pole 16 to complete the entire frame.

Here, the roof portion 11 and the side wall portion 12 in the longitudinal direction of the plant cultivation house 1 are covered with double transparent and / or translucent frame-forming films 2 and 3, and the roof portion is mostly shaded during the day. 11 is provided with a reflection film 4 for reflecting sunlight.
On the south (S) side where sunlight is irradiated, a double film is stretched around the outer peripheral surface side, and a transparent outer film (sheet) 2 which is a frame forming film and a cold protection material outer film is stretched around. The thickness was 0.1 mm (MKV Dream Co., Ltd .: Danbino (trademark)). The transparent sheet preferably has high performance for taking in sunlight, and is preferably transparent or nearly transparent (transparency 90% or more).
In addition, the inner sheet 3 is a frame-forming film and a translucent inner sheet 3 that suppresses far-infrared rays. The translucent film is 0.075 mm (MKV Dream Co., Ltd .: Danbino (trademark)). It was used. The translucent sheet of the inner film 3 has a translucent light (550 mm) transmittance of 75% and a total light (550 mm) transmittance of about 90%, but the far-infrared (5-25 μm) transmittance for heat retention is 15%. % (General farming degree 25%) and has heat retention. Between the double sheets, an air layer with an interval of about 3 to 10 cm (average 5 cm) is present, and at least it should not be in close contact.

In addition, the outside temperature when the weather is fine, the room temperature of the conventional single film 1 m above the greenhouse inside the greenhouse, and the inside of the greenhouse of this embodiment in which the north side reflection film is arranged on the double film of the present invention. Comparing the room temperature at 1 m above, even if the outside air is about 5 degrees at maximum, the room temperature is as high as 35 degrees, much higher than the maximum 24 degrees in the conventional greenhouse.
Furthermore, comparing the outside air temperature when the weather is snow, and similarly the outside air temperature and the indoor temperature of a conventional single film 1 m above the greenhouse, even if the outside air is at a maximum temperature of about 4 degrees. The room temperature is as high as 16 degrees, much higher than the maximum of 3 degrees in a conventional greenhouse.
By the way, the outside of the portion of the plant cultivation house 1 that is not irradiated with sunlight is covered with an outer film 21 (2) made of a cold protection material, and the inner peripheral surface of the inner film 3 on the inner side is further a heat reflecting mirror. As a portion (reflecting plate), the reflecting film 4 is attached to the inner wall of the inner film 3. In this embodiment, the reflective film 4 is 0.03 mm (Hitachi AIC Co., Ltd .: Polyshine NF (trademark)).
Further, an openable / closable protective film 51 is provided in an intermediate portion between the frame forming films 2 and 3 on both side wall surfaces SD facing the north and south and the ground surface G. The protective film 51 can be wound up, and can be manually or by a winder to wind up the protective film 51 in the daytime and replace the air as necessary. A protective film lateral pole 18 is separately provided for reinforcement at the upper ends of the reflective film 4 and the low-position reflective film 41 described later.
Further, a heat insulating sheet 52 may be interposed between the outer film 2 and the inner film 3 on the north side of the plant cultivation house 1, and a black vinyl tube 53 is disposed on the inner frame of the plant cultivation house 1, Distribute a portion of the warm water in the heat exchanging pipe 75 for cultivating and warming the plant cultivation house 1 at night, and conversely, warm the water in the vinyl tube 53 and return it to the heat storage tank 7 during the day. Also good.

In addition, the low-position reflective film 41 is formed around the low-side reflection film 41 at the low position on the entire inner circumference 30 cm to 100 cm above the ground G on both side wall surfaces SD. This is because the snow accumulated in the winter on the outside of the plant cultivation house 1 creates shade and hinders the growth of the plant, so that the light is irradiated to the corners by covering the lower part of the inner circumference 31 with aluminum foil. Surprisingly, the plant grows smoothly in this area.
The height of 30 cm to 100 cm is affected by the shadow of the base frame 131 if it is 30 cm or less. The reason why the height is 100 cm is that the snow cover around the plant cultivation house 1 is usually within this range. If necessary, it may be about 150 cm. Of course, the height of the low-position reflective film 41 may be determined accordingly in places where weeds or buildings are present even if it is not snow.
In addition, it has been found that the low-position reflective film 41 is very effective for the growth of plants. When the low-position reflective film 41 is provided around a predetermined height, the growth of the plants of each camellia is surprisingly good.

[Indoor configuration]
Next, the indoor structure of the plant cultivation house 1 will be described. 2 and 3, in the daytime, the upper space X1 in the plant cultivation house 1 is provided with an air suction duct 6 in the longitudinal direction. From the plurality of suction ports 61 provided in the air suction duct 6, the upper space X1 is provided. The high-temperature air accumulated in the air is sucked from the connecting duct portion 62 by the blower fan 63 and the blower pipe 64 and supplied to the (first) heat exchange coil 65 of the heat storage water tank 7 to warm the water in the heat storage water tank 7.
The heat exchanging coil 65 is obtained by reciprocating a pipe 651 made of metal or the like having good heat transfer up and down several times in the water in the heat accumulating water storage tank 7, and the heat accumulating water storage tank with hot water in the pipe 651 of the heat exchanging coil 65. 7 warms the water in the air, and the air after passing through the heat exchanging coil 65 is slightly warmer than the outside, but the plant at the bottom of the plant cultivation house 1 grows. Air is discharged after passing through the heat exchange coil 65 that has been heated from the opening 661 of the discharge duct 66 that extends to the adjacent portion. As a result, the air in the lower part of the room of the plant cultivation house 1 is warmed, and the air after passing through the heat exchange coil 65 is released into the house, thereby stirring the air in the house and stimulating the plant. Promotes strong growth.

[The warming composition of the cultivation basket 9]
Here, the warmed water in the heat storage tank 7 is used to warm the cultivation basket 9 of the plant cultivation house 1, and the warming configuration of the cultivation basket 9 will be described.
In FIG. 3, the relatively warm water in the upper part of the heat storage tank 7 is supplied from the connection pipe 73 to the heat exchanging pipe 75 for cultivating soil in the cultivating soil 9 by the pump 74, and warms the predetermined cultivated straw 9. Water is circulated from the soil heat exchange pipe 75 to the heat storage tank 7 again from the lower connection pipe 76 of the heat storage tank 7.
The piping state of the soil heat exchange pipe 75 is as shown in FIG. 4. For each soil cultivator 9, for the soil soil connected to the pump 74 corresponding to the relatively hot water in the upper layer from the heat storage tank 7. The forward introduction port 751 of the heat exchange pipe 75 is provided in parallel, and the introduction port 752 of the return heat exchange pipe 75 that circulates in the heat storage tank 7 is also provided in parallel. It is arranged so that there is no.
Further, the spare circulating low-temperature water heater 72 is not normally operated, and when the hot water in the heat storage tank 7 becomes lower than a predetermined temperature, the spare circulating low-temperature water heater 72 is heated by the spare circulating low-temperature water heater 72 from the upper connection pipe 71. The connection pipe 73 is circulated to the heat storage water tank 7.
The operation of this spare circulating low-temperature water heater 72 is required to warm the cultivation soil B of the cultivation basket 9 from 15 degrees to 45 degrees when the cultivation soil B of the cultivation basket 9 falls below the unsuitable cultivation temperature in winter or at night. The water from the heat storage tank 7 is warmed at a low temperature. Of course, there is almost no need for daytime even in winter. Therefore, the soil B can be heated from 15 degrees to 45 degrees, so that a large-scale device such as a normal boiler is not necessary, and a device such as a small water heater for home use is sufficient.

In this embodiment, a solar water heater 8 is further used to heat the hot water in the heat storage water tank 7, but as shown in FIG. 3, the solar water heater 8 is provided outside the house, and the heat storage water tank The second heat exchange coil 81 is disposed in the water 7, connected to the circulation pipe 82 of the solar water heater 8, and the water warmed by the solar water heater 8 is transferred to the second heat exchange coil 81. Then, the water in the heat storage tank 7 is further warmed by the second heat exchange coil 81.
The solar water heater 8 has a relatively large sunshine angle (high latitude) for snow accumulation even in winter such as Hokkaido, so the water heating of the solar water heater 8 is effective. By the addition, the temperature of the heat storage water tank 7 can be further increased with energy saving.

[Composition of Cultivation B]
FIG. 5 is an enlarged view of the cultivation basket 9 in the plant cultivation house 1 of FIG. 2, which will be described with reference to FIG. 5.
The cultivation basket 9 lays a thick heat insulating material on the bottom of the pile body 91 on the frame body 91 in order to block the coldness of the ground surface G, and the inner side surface of the frame body 91 (ie, the cultivation basket 9). And the bottom 92 is provided with a soil culture film 92, and is wrapped with the soil B. A drain pipe 94 that opens to the outside is provided in a part of the side near the bottom, and a fine hole is provided on the surface provided at the top of the plant P. Excess water supplied from the supplied water supply tube 95 is drained.
Therefore, in addition to laying the heat insulating material 93 on the bottom surface of the cultivation basket 9, the side and bottom surfaces of the soil B are wrapped with the soil film 92, so that the heat release is reduced and water supply from the water supply tube 95 is performed. Excess water can be drained from a drain pipe 94 provided at a part of the side near the bottom surface of the frame body 91 to prevent plant root rot and the like.

As described above, according to the plant cultivation house 1 for cold districts of the embodiment of the present invention, since the roof portion 11 has a steep slope, the snow that accumulates on the roof in winter easily falls naturally, In addition to increasing the amount secured, high-temperature air near the ceiling in the house can be collected in a narrow area, and the high-temperature air collected on the top of the ceiling with a triangular cross section is passed through the heat exchange coil 65 of the heat storage tank 7. Once heat is stored in the heat storage tank 7, the air after heat exchange is released into the house and the air is stirred to stimulate the plant P to promote strong growth, and the use of the heat exchange coil 65 reduces the addition of air blowing. To do.
Moreover, the warm water of the heat storage tank 7 is supplied to the heat exchanging pipe 75 for cultivating soil buried in the cultivation basket 9 in the lower part of the plant cultivation house 1, and the cultivation basket 9 is warmed and kept warm to some extent even at night so Can grow, and use less fossil fuels, save fuel in low-temperature water heaters, and prevent heat from being taken away by the surface G. Plants such as crops can be grown throughout the year. A plant cultivation house for cold areas is possible.
Therefore, fossil fuels are mainly used for heating at night in conventional houses, etc., and the cultivation cost is high, and year-round cultivation is inappropriate.However, the present invention is more effective than the conventional apparatus in preventing cold weather and effectively using solar heat. The basic room temperature is high and the cultivation cost is low. Moreover, since it becomes possible to cultivate even in snowy and cold regions that were previously unsuitable for cultivation, local productivity can be improved and local products can be supplied to consumers.

Since the circulating low-temperature water heater 72 is provided as a spare, the cold damage of the plant P can be prevented by operating the circulating low-temperature water heater 72 especially on a date and time when it is cold. Furthermore, although the solar water heater 8 is provided for heating the heat storage water tank 7, since the sunlight angle is relatively large in Hokkaido and the like for snow accumulation even in winter, the water heating of the solar water heater 8 is effective. By adding the solar water heater 8, the temperature of the heat storage water tank 7 can be further increased with energy saving.
Also, since the sun rays reach the house even during the winter period, the solar heat is made into a double film on the side wall of the house, and the reflective film 4 is provided on the inner wall on the roof portion 11 where the sun is hardly exposed. Since the interior of the house can be heated efficiently without being influenced by external weather conditions, the reflective film 4 that reflects sunlight is provided on the roof 11 which is mostly shaded during the day. Since the sunlight diffusing outside is confined to the plant cultivation house 1, the solar energy can be efficiently taken in, and the growth spots of the plant P can be reduced uniformly and brightly in the house.
Furthermore, in addition to covering the bottom surface of the cultivation basket 9 with the heat insulating material 93, the side surface and the bottom surface are wrapped with the soil culture film 92, so heat release is reduced, and excess water from the water supply tube 95 is supplied. Water can be drained from a drain pipe 94 provided on a part of the side near the bottom surface, thereby preventing plant root rot and the like.
Furthermore, fossil fuels are the main heating for nighttime heating of conventional houses, but the cultivation cost is high. However, the effective use of solar heat increases the basic room temperature and lowers the cultivation cost. Moreover, since it becomes possible to cultivate even in snowy and cold regions that were previously unsuitable for cultivation, local productivity can be improved and local products can be supplied to consumers.
Needless to say, the present invention is not limited to the above-described embodiments as long as the features of the present invention are not impaired.

G ·· Surface, SD ·· Side wall surface, B ·· Culture soil, P ·· Plant, X1 ·· Upper space,
1 .... Plant cultivation house, 11 .... Roof part (triangular roof),
111 .. roof top part, 112 .. north roof part, 113 .. ceiling air passage,
114,116 ... damper, 115 ... vertical wall,
12. Side wall part,
13 .... Foundation part, 131 ... Foundation frame,
132 .. Pole support member,
14. ・ Outer frame vertical pole, 15. ・ Outer frame horizontal pole, 16. ・ Outer frame skew vertical pole,
17. ・ Horizontal pole for holding reflective film, 18. ・ Horizontal pole for protective film,
2. Outer film (frame forming film)
21 .. Outer film of cold protection material (frame forming film),
3. Inside film (frame forming film),
4. ・ Reflective film (reflector), 41 ・ ・ Low-position reflective film,
51..Protective film, 52..Heat insulation sheet, 53..Vinyl tube,
6 .... Air suction duct, 61 ... Suction port, 62 ... Connection duct part,
63 .. Blower fan, 64 .. Blower pipe, 65 .. (first) heat exchange coil,
651 .. pipe, 66 .. discharge duct, 661 .. opening,
7 ··· Thermal storage tank, 71 ·· Upper connection piping, 72 ·· Circulating low-temperature water heater,
73 .. Connection piping, 74 .. Pump, 75 .. Heat exchange piping for cultivating soil,
751,752 ..Inlet,
76 .. Lower connection piping,
8 .... Solar water heater, 81 ... Second heat exchange coil, 82 ... Circulation piping,
9 .... Cultivation rice cake, 91 ... Frame, 92 ... Film for cultivation, 93 ... Heat insulation material,
94 ... Drain pipe, 95 ... Water supply tube, 96 ...

Claims (5)

A plant cultivation house for cold regions with a steep slope on the roof slope, a triangular roof in the longitudinal direction and a vertical side wall,
Cover the longitudinal roof part and the side wall part of the plant cultivation house with a double transparent and / or translucent frame-forming film,
An air suction duct for sucking high-temperature air in the longitudinal direction is provided in the upper part of the ceiling of the triangular roof, and the high-temperature air taken into the air suction duct is blown to the heat exchange coil of the heat storage water tank. Let the air pass through, release the air after passing into the house, stir the air in the house,
Supplying the warm water of the heat storage water tank to the heating pipe piped in the ground of the cultivation basket in the plant cultivation house, circulating the water warming the cultivation tank to the heat storage tank,
A plant cultivation house for cold regions, wherein a heat insulating material is interposed between the cultivation basket and the ground surface.   2. The plant cultivation house for cold districts according to claim 1, wherein a low-temperature water heater is provided in the heat storage water tank for supplying warm water, and the warm water is further heated as necessary. .   A solar water heater is provided outside the house, and the hot water heated by the solar water heater is supplied to the second heat exchange coil provided in the heat storage water tank and circulated to warm the water in the heat storage water tank. The plant cultivation house for cold districts according to claim 1 or 2, characterized by the above.   The plant cultivation for cold districts according to claim 1, 2 or 3, characterized in that a reflective film for reflecting sunlight is provided inside the roof part which is mostly shaded during the daytime. House.   The side surface and the bottom surface of the cultivated straw are wrapped with a film, and a drain pipe that opens to the outside is provided on a part of the side portion in the vicinity of the bottom surface. The plant cultivation house for cold regions of Claim 4.

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