JP6443973B2 - vinyl house - Google Patents

Description

The present invention relates to a greenhouse used for plant cultivation.

Conventionally, in agriculture, a method of cultivating a plant in an appropriate temperature environment using a plastic house has been adopted. As a specific example of the greenhouse is described in Patent Document 1, a steel pipe is used for the housing, and an outer wall is covered with a vinyl sheet. The greenhouse can be warmed by circulating hot water through pipes piped on the soil or sending warm air with a fan even during times when the outside air falls, such as at night in winter.

JP 2003-339254 A

However, in places where hot water circulates pipes are installed, it is necessary to avoid the farm tools coming into contact with the pipes, and farm work is restricted. This invention is made | formed in view of this situation, and it aims at providing the greenhouse which suppresses the restriction | limiting of the agricultural work which arises from installing the pipe | tube which flows the liquid by which temperature adjustment was made.

The greenhouse according to the present invention that meets the above-mentioned object is a greenhouse that covers a space for cultivating a plant with a vinyl sheet attached to a casing, and the casing includes a pipe through which a temperature-adjusted liquid flows, The space adjusts the temperature of the space by heat exchange between the liquid flowing in the space and the air of the space, and the pipe forwards the liquid supplied from the outside from one of the front side and the rear side to the other. When, the liquid flowing the forward path, a backward path for feeding the outside directs to the one from the other, and said forward and said return path that is connected only with the other.

In the greenhouse according to the present invention, the pipe has a plurality of first arch portions arranged opposite to each other with a space in the front and rear in the standing state, and a space in the front and back in the standing state. Preferably, the first arch portion and the second arch portion are alternately arranged.

The greenhouse according to the present invention further includes a rotating shaft arranged in the front-rear direction and connected to the housing, and a driving means for rotating the rotating shaft, and the housing is configured to rotate the rotating shaft. Accordingly, it is preferable that the space portion is exposed by rotating about the rotation axis.

In the greenhouse according to the present invention, the housing includes a pipe through which a temperature-controlled liquid flows, and the temperature of the space where the plant is cultivated is adjusted by heat exchange between the liquid flowing in the pipe and the air in the space. Therefore, it is not necessary to provide a pipe for temperature adjustment separately from the housing, and it is possible to suppress the restriction of farm work caused by providing the pipe.

It is a schematic diagram of the greenhouse which concerns on one embodiment of this invention. (A), (B) is explanatory drawing which shows a mode that the greenhouse which concerns on a modification, respectively opens and closes. It is a graph which shows the result of having measured the temperature of the inside and outside of a greenhouse.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIG. 1, a greenhouse 10 according to an embodiment of the present invention includes a housing 11 and a vinyl sheet 12 attached to the housing 11, and covers the space S where plants are cultivated with the vinyl sheet 12. . Details will be described below.

As shown in FIG. 1, the housing 11 includes a metal pipe 13 through which the temperature-controlled liquid flows. The pipe 13 includes a plurality of first and second arch portions 14 and 14a each formed in an arc shape, a connecting portion 15 that connects one first arch portion 14 and the other first arch portion 14, and , A connecting portion 15a for connecting one second arch portion 14a and the other second arch portion 14a is provided. Accordingly, the plurality of first arch portions 14 are connected via the connecting portion 15, and the plurality of second arch portions 14a are connected via the connecting portion 15a.

The plurality of first arch portions 14 are opposed to each other at a predetermined pitch with a space therebetween in the standing state, and the plurality of second arch portions 14a are also disposed at a predetermined pitch with a space in the front and back in the standing state. Opposed. In the plurality of first arch portions 14 and the plurality of second arch portions 14a, the first arch portions 14 and the second arch portions 14a are alternately arranged.
The connecting portion 15 is a straight tube along the front-rear direction, and connects one end of the first arch portion 14 to one end of the other first arch portion 14. The connecting portion 15a is also a straight tube along the front-rear direction, and one end of one second arch portion 14a is connected to one end of the other second arch portion 14a.

The pipe 13 further includes, in the plurality of first arch portions 14, a long front and rear introduction pipe 16 connected to one end of the first arch portion 14 disposed at the front, and a plurality of second arch portions. In 14a, it has the long discharge pipe 17 before and after being connected with one end of the 2nd arch part 14a arranged foremost.
The inlet pipe 16 whose rear end is connected to the first arch portion 14 is formed with an inlet 18 into which liquid sent from the outside flows in at the front end, and the second arch portion 14a is connected to the rear end. The discharge pipe 17 is formed with a drain port 19 through which liquid is discharged at the front end. In the present embodiment, the inlet 18 and the drain 19 are provided on the front side of the pipe 13.

The inflow port 18 and the drainage port 19 are connected to external conduits 22 and 23 via connectors 20 and 21, respectively. The conduit 22 is connected to a temperature adjusting device (not shown) that supplies liquid (which is water in this embodiment) to the conduit 22 by heating (ie, adjusting the temperature). As the temperature adjusting device, a heat pump or a boiler can be adopted. When employing a heat pump, it is possible to make the liquid supplied to the conduit 22 cooler than the outside air by switching the flow of the refrigerant.
In addition, in the plurality of second arch portions 14a, the second arch portion 14a disposed on the rearmost side and the first arch portion 14 disposed on the rearmost side are connected as a straight pipe. The parts 24 are connected.

The liquid supplied from the conduit 22 (that is, the outside) and flowing into the introduction pipe 16 from the inlet 18 proceeds to the rear side while flowing through the first arch portion 14 and the connecting portion 15.
Then, after the liquid reaches the first arch portion 14 arranged at the rearmost side, the liquid flows through the second arch portion 14a and the connecting portion 15a and is sent to the front side. 19 to the conduit 23.

In the present embodiment, an outward path 25 is formed by the one introduction pipe 16, the three first arch portions 14, and the two coupling portions 15, so that the liquid supplied from the outside is directed from the front side to the rear side. The liquid flowing in the forward path 25 is directed to the outside from the rear side to the front side by one connecting portion 24, two second arch portions 14a, one connecting portion 15a, and one discharge pipe 17. A return path 26 for feeding out is formed. Here, the numbers of the first arch portions 14 and the connection portions 15 provided in the forward path 25 and the numbers of the second arch portions 14a and the connection portions 15a provided in the return path 26 are the numbers before and after the pipe 13, respectively. It can be changed according to the length.

The vinyl sheet 12 is attached to the housing 11 by a metal fitting (not shown) in a state where the plurality of first and second arch portions 14 and 14a, the plurality of connecting portions 15, and the one connecting portion 15a and the connecting portion 24 are in contact with each other. It is fixed and covers the entire space S. In FIG. 1, the plurality of first and second arch portions 14, 14 a, the plurality of connecting portions 15, the one connecting portion 15 a, and the connecting portion 24 are indicated by solid lines, but actually, the vinyl sheet 12 Covered by.
As the vinyl sheet 12, a polyvinyl chloride film, a polyolefin film, or a fluororesin film can be employed. The vinyl sheet 12 may be attached to the casing 11 in a state where a plurality of sheets are stacked, or may be attached to the casing 11 without being stacked.

When the liquid flowing through the pipe 13 is hotter than the temperature of the air in the space S (that is, hot water), the liquid dissipates heat to the space S while flowing through the pipe 13 and raises the temperature of the space S. When the liquid flowing through the pipe 13 is at a lower temperature than the temperature of the air in the space S (that is, cold water), the liquid absorbs heat from the air in the space S when flowing through the pipe 13, and the temperature of the space S is reduced. Reduce.
Therefore, the temperature of the space S is adjusted by heat exchange between the liquid flowing in the pipe 13 and the air in the space S. In addition, the temperature in the greenhouse can be lowered by flowing cold water through the pipe 13 in summer.

Here, the liquid flowing through the pipe 13 advances through the pipe 13 while the temperature difference with the air in the space S decreases by heat exchange with the space S. And the 1st arch part 14 with which the liquid with a large temperature difference with the air of the space part S flows through the 2nd arch part 14a with which the liquid with a small temperature difference with the air of the space part S flows in the front-back direction. Since they are alternately arranged, it is possible to suppress an increase in temperature difference at different positions of the space portion S.

The greenhouse 10 is based on the premise that the housing 11 is fixed to the grounding surface of the housing 11 and the worker enters the greenhouse 10 to work. The greenhouse 10 is provided with a doorway (not shown).
On the other hand, a greenhouse 30 shown in FIG. 2A which is a modified example of the greenhouse 10 is designed so that an operator can work without entering the greenhouse 30.
Hereinafter, the greenhouse 30 will be described. In addition, in the greenhouse 30, about the structure similar to the greenhouse 10, the same code | symbol as the greenhouse 10 is attached | subjected and detailed description is abbreviate | omitted.

The greenhouse 30 is large enough to cover one ridge of the field, and is not large enough for a person to enter the greenhouse 30.
As shown in FIG. 2A, the greenhouse 30 includes a rotating shaft 31 along the front-rear direction, and a plurality of first and second arch portions 14, 14a to which the vinyl sheet 12 is attached, and a plurality of connections. The housing 11 including the portion 15, the one connecting portion 15 a, and the connecting portion 24 is connected to the rotating shaft 31.

A motor (an example of a driving unit) (not shown) is connected to the rotating shaft 31, and the motor rotates the rotating shaft 31 by operation, and as shown in FIGS. 2A and 2B, the housing 11. Can be rotated around the rotation shaft 31. The coupler 32 connected to the introduction pipe 16 and the coupler 33 connected to the discharge pipe 17 can be separated from the introduction pipe 16 and the discharge pipe 17, respectively. The introduction pipe 16 and the discharge pipe 17 rotate around the housing 11. Before moving, they are disconnected from the connectors 32, 33, respectively.

In addition, you may employ | adopt as the coupling tools 32 and 33 what can isolate | separate each of the introduction pipe | tube 16 and the discharge pipe 17 from the coupling tools 32 and 33 by an operator's manual work, or with the rotation of the housing | casing 11. In addition, a structure in which the introduction pipe 16 and the discharge pipe 17 are automatically separated from the couplers 32 and 33 may be employed. Then, flexible pipes may be employed for the conduits 22 and 23 so that the housing 11 can be rotated without disconnecting the introduction pipe 16 and the discharge pipe 17 from the connectors 32 and 33. Moreover, you may enable it to rotate the housing 11 manually by an operator, without using a motor.

The space S covered with the vinyl sheet 12 is exposed when the housing 11 is rotated, that is, as shown in FIG. 2B, the worker can work.
After the worker finishes the work, the housing 11 is rotated in a direction in which the vinyl sheet 12 covers the space S, and the introduction pipe 16 and the discharge pipe 17 are connected to the connectors 32 and 33, respectively. As a result, the liquid flows through the conduit 22 again by flowing the liquid through the conduit 22.

Next, examples carried out for confirming the effects of the present invention will be described.
In a greenhouse with a front and back length of 150 cm, a width of 50 cm, and a height of 45 cm, an experiment was conducted in which warm water was passed through a pipe to which a vinyl sheet was fixed to measure the temperature inside and outside the greenhouse. The temperature measurement points are three points at different heights in the greenhouse, the ground inside and outside the greenhouse, and the space outside the greenhouse. The measurement results are shown in the graph in FIG. .

In the graph of FIG. 3, T1 for 0 to 1.5 hours is a time zone in which the vinyl sheet was covered with an aluminum sheet, and T2 for 1.5 to 2.5 hours is 2 sheets after removing the aluminum sheet. The T3 of 2.5 to 3.5 hours was a time zone in which one of the overlaid vinyl sheets was removed so that the vinyl sheets were not overlaid.
The hot water supply was terminated at 3.5 hours.

In the graph of FIG. 3, a is the temperature transition of the hot water supplied to the pipe, and b, c, and d indicate the measured temperatures of the thermometers installed at different height positions in the space in the greenhouse. . Thermometers corresponding to each of b, c, and d were arranged at a position where b was the highest, c was arranged at the next highest position, and d was arranged at the lowest position.
e and f show the temperature transition of the ground inside and outside the greenhouse, respectively, and g shows the temperature transition of the space outside the greenhouse.

According to the experimental results, by flowing hot water of about 63 ° C through the pipe, the temperature of the space inside the greenhouse can be measured in the space outside the greenhouse even when aluminum sheets or other vinyl sheets are not stacked on the vinyl sheet. It was confirmed that the temperature was about 10 ° C. higher than the temperature, and a sufficient temperature adjustment effect was observed.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and all changes in conditions and the like that do not depart from the gist are within the scope of the present invention.
For example, the pipe is not limited to metal, and may be formed of other materials.
Also, the water flowing through the pipe is not limited to water, and other liquids such as antifreeze may be used. And an inflow port and a drain outlet do not need to be formed in the front side of a pipe, and may be formed in other places, for example, the back side of a pipe.
Furthermore, the entire casing does not need to be a pipe that flows a liquid whose temperature is adjusted, and a part of the casing may not be a pipe that flows a liquid.

10: Plastic house, 11: Housing, 12: Vinyl sheet, 13: Pipe, 14: First arch part, 14a: Second arch part, 15, 15a: Connecting part, 16: Introducing pipe, 17: Discharge pipe , 18: inflow port, 19: drainage port, 20, 21: connector, 22, 23: conduit, 24: connection part, 25: forward path, 26: return path, 30: plastic house, 31: rotating shaft, 32, 33 : Connecter, S: Space

Claims (3)

In a greenhouse that covers the space where plants are cultivated with a plastic sheet attached to the housing,
The housing includes a pipe through which a temperature-adjusted liquid flows, and the space is temperature-adjusted by heat exchange between the liquid flowing in the pipe and the air in the space ,
The pipe includes an outward path for directing the liquid supplied from the outside to the other from either the front side or the rear side, and a return path for sending the liquid that has flowed through the forward path from the other side to the one side to be sent to the outside. the provided, greenhouses and the forward and the backward path, characterized that it is connected only with the other. 2. The greenhouse according to claim 1 , wherein the pipe is disposed in the forward path in a standing state with a plurality of first arch portions arranged opposite to each other at an interval in the front and rear direction, and in the backward path in a standing state. A greenhouse having a plurality of second arch portions arranged to face each other with a space therebetween, wherein the first arch portions and the second arch portions are alternately arranged. The greenhouse according to claim 1 or 2 , further comprising: a rotating shaft arranged in the front-rear direction and connected to the housing; and a driving means for rotating the rotating shaft, wherein the housing is formed of the rotating shaft. As the product rotates, the greenhouse rotates around the rotation shaft to expose the space.

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