JP2015133913A - Air infiltration prevention structure of wind-induced ventilation structured greenhouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air infiltration prevention structure which prevents generation of air infiltration caused by a contact or adhesion failure generated between a shutoff sheet and edges of a vent opening when the vent opening is closed with the shutoff sheet or a door frame or window frame, thereby increasing the thermal efficiency of a greenhouse or preventing in advance a harmful effect such as stunted growth of crops by the air infiltration.SOLUTION: Pneumatic tubes 10a, 10b are installed along edges of a vent opening 1 formed on a greenhouse, or oppositely, on a face part in contact with the edges of the vent opening 1A, 1B, 1C at a periphery of a window frame 50, 60 or door frame 40 for opening and closing the vent opening 1. Further, an electric fan is installed which takes and blows air into the pneumatic tubes to inflate the tubes. In a state of the inflated pneumatic tube, a shutoff sheet 4 or the window/door frame manipulated to be a closed state and the vent opening are in close contact via the pneumatic tubes to prevent generation of gaps.

Description

  This invention provides a ventilation opening in a greenhouse such as a so-called vinyl house, and opens and closes the opening to open and close the ventilation opening in a ventilation ventilation greenhouse that controls ventilation and temperature control. Or, when it is closed with a door frame or window frame (hereinafter sometimes referred to as “blocking sheet”), there is a gap between the blocking sheet and the edge of the ventilation opening due to poor contact or close contact. It belongs to the technical field of the draft-wind prevention structure, which prevents the occurrence and enhances the thermal efficiency of the greenhouse or prevents the bad effects such as the poor growth of crops caused by the draft.

Nowadays, the cultivation of vegetables and fruits in the house has become common sense, and the production and shipment of agricultural products regardless of the season has enriched the market.
However, the burden of heating costs required to preserve the cultivation environment of crops during the cold season has become a problem for farmers.
In the case of a particularly simple and inexpensive vinyl house, it is disclosed in the following Patent Documents 1 and 2 for the purpose of preventing indoor high temperature in the summer and as a means of performing indoor ventilation ventilation on a daily basis, or FIG. A ventilation ventilation greenhouse with the configuration principle illustrated in FIG. 3 is widely implemented. That is, a considerably wide ventilation opening is formed on the side surface, ceiling surface, or wife surface of the vinyl house as a so-called side window, skylight, wife window, or doorway.
Although illustration of such ventilation openings is omitted, a typical side ventilation opening 1 will be described. As illustrated in FIGS. 2 and 3, a sheet stopper that forms the upper edge of the ventilation opening 1 is illustrated. A blocking sheet 4 (usually a transparent plastic sheet) is suspended from the material 3, and the lower edge side of the blocking sheet 4 is wound around the sheet take-up shaft 5. By rotating the sheet take-up shaft 5 in the forward rotation direction by the rotating machine 6 and winding up the blocking sheet 4, the ventilation opening 1 is widely exposed (opened) to achieve the purpose of ventilation ventilation. On the contrary, the entire surface of the ventilation opening 1 is closed by rotating the sheet winding shaft 5 in the reverse direction by the rotating machine 6 and lowering the blocking sheet 4 from the lower edge of the ventilation opening 1 to the following. A ventilation-ventilated greenhouse with a method of maintaining the indoor temperature by reproducing the sealed state of a vinyl house has already been widely known and implemented.

Regarding the formation of the ventilation opening 1, a sheet stopper 30 that forms the lower edge of the ventilation opening 1 is installed at a position slightly higher than the lower limit position where the blocking sheet 4 is wound around the sheet winding shaft 5. To do. The sheet stopper 30 is installed in a horizontal direction parallel to the sheet stopper 3 that forms the upper edge of the opening. Between the sheet stopper 30 and a sheet stopper 31 provided at a position where the sheet stopper 30 is in contact with the ground below, a so-called side surface (ridge direction) discarding sheet 7 is attached.
As well as a certain distance (usually 50 cm) from the position of the sheet stopper 32 in the vertical direction located at the boundary (corner portion) between the side surface and the end surface of the vinyl house to the inside of the ridge direction (side surface direction) A sheet stopper 33 that forms a vertical edge of the ventilation opening 1 is installed at a position parallel to the corner sheet stopper 32 in the vertical direction. And the ventilation opening 1 which opens and closes by the said blocking sheet | seat 4 is installed between the sheet | seat stop material 33 and the vertical sheet | seat stop material 32 located in the said corner part, and the throwing-up sheet | seat 8 of the vertical direction is installed. It is formed in an airtight structure, and can be reliably opened and closed to the peripheral portion by the blocking sheet 4.

More specifically, when the ventilation opening 1 is opened and closed by the sheet take-up shaft 5 in which the blocking sheet 4 is wound from the lower end edge side, the sheet winding shaft 5 and the blocking sheet roll 4a are fluctuated by the action of wind. As a means for preventing the movement inconvenience, the blocking sheet 4 and the sheet take-up shaft 5 are interposed between the sheet stopper 3 that forms the upper edge of the ventilation opening 1 and the sheet stopper 31 provided at the lower ground contact position. A large number of elastic pressing straps 9 that are pressed from the outside with a strength that allows vertical movement of the (blocking sheet roll 4a) are usually installed at intervals of about 50 cm to 100 cm in the ridge direction (FIGS. 2 and 3). See).
Currently, as a means to be used together with the presser strap or as a means to replace the presser strap, a wide belt having a width of 20 cm is used, or a moderately heavy pipe is stood from the outside of the greenhouse and pressed. Attaching is also done, so let us say that the description of the “holding strap” below includes each of the above means.
Further, the rotating machine 6 of the sheet take-up shaft 5 around which the blocking sheet 4 shown in FIGS. 2 and 3 is wound is arranged parallel to the opening / closing direction (vertical direction) of the blocking sheet 4 and the lower end is pierced into the ground. The reaction force is sufficient to move along the guide rod 11 fixed in the vertical direction following the displacement of the sheet winding shaft 5 and not to rotate the rotating machine 6 with respect to the rotation of the sheet winding shaft 5. It is installed to grant. The rotating machine 6 is not only a manual type in which the handle 6a is turned by hand, but also an electric type driven by a motor.
In the case of a vinyl house, the above-described sheet stoppers 3 and 30 to 33 have openings mainly known as the name of Binipet (registered trademark) developed, manufactured and sold by the applicant. The member (refer FIG. 4, FIG. 5) by the narrow groove-shaped material 3a and the spring material 3b in which a trapezoidal wave repeats alternately is used suitably.

JP 2003-143973 A JP 2009-273389 A

As described above, the ventilation ventilation greenhouses that perform ventilation by opening and closing the ventilation opening 1 by rotating the sheet take-up shaft 5 to wind or unwind the blocking sheet 4 are disclosed in Patent Documents 1 and 2 above. Not only the disclosed configuration but also various structures and types are known and implemented.
However, the reality that the cultivation environment for crops in the cold season and the burden of heating fuel costs associated therewith is greatly affecting producers is still a problem for those skilled in the art as a technical problem to be solved. There is an urgent need to create a possible solution.
The technical problem will be specifically described as follows.
In the case of a configuration that opens and closes the ventilation opening 1 by rotating the sheet take-up shaft 5 in which the above-described shut-off sheet 4 is wound from the lower end edge side in the forward and reverse directions, The blocking sheet roll 4a) fluctuates together with various changes such as wind pressure, wind speed, and wind direction of the wind blown without interruption. As a result, inconveniences that generate gaps and cause the generation of drafts are known, and the importance of devising preventive measures is known.
Conventionally, as a measure against the above problem, the blocking sheet 4 and the sheet are arranged in the vertical direction between the sheet stopper 3 that forms the upper edge of the ventilation opening 1 and the sheet stopper 31 of the ground contact portion. The winding shaft 5 (blocking sheet roll 4a) is pressed from the outside, but a so-called pressing string 9 having a strength that allows the sheet winding shaft 5 (blocking sheet roll 4a) to move up and down (open / close operation) is provided in the ridge direction. It has already been mentioned above that a large number are usually installed at intervals of about 50 cm to 100 cm.
However, since the vinyl house originally has a simple frame structure, the blocking sheet 4 and the sheet take-up shaft 5 (blocking sheet roll 4a), and the sheet stoppers 33 on both lateral sides forming the ventilation opening 1 described above. In addition, the close contact state (sealed state) with the sheet stopper 30 at the lower edge position and each of the discarded tension sheets 7 and 8 is not suitable for the structure. In addition, although a large number of holding cords 9 for pressing the blocking sheet 4 and the sheet take-up shaft 5 (blocking sheet roll 4a) from the outside are generally installed at intervals of about 50 cm to 100 cm in the building direction, Therefore, it is difficult to prevent the blocking sheet 4 having a large area from being shaken by receiving a strong wind because the sheet take-up shaft 5 is rotated and gently moved so as to allow the sheet winding shaft 5 to move up or down. .
For this reason, it is expected to keep the contact state (sealed state) between the sheet stoppers 33 and 30 and the blocking sheet 4 formed with the vertical and horizontal opening edges of the ventilation opening 1 completely. It is impossible.
In short, the above-mentioned sheet stopper that forms the vertical and horizontal opening edges of the blocking sheet 4 (blocking sheet roll 4a) and the ventilation opening 1 in accordance with the continuous change in wind direction, wind pressure, and wind speed blowing toward the vinyl house. Fluctuations with the materials 33 and 30 are inevitable, and a gap is created each time such fluctuations occur, and it is impossible to prevent the phenomenon that the air from the gap enters the interior of the vinyl house, or conversely, the phenomenon of sucking out the warm air in the room. Is the current situation.
Incidentally, regarding the above-mentioned so-called side windows, skylights, wife windows, doorways, etc., which are always provided in vinyl houses, the same problems as described above are known, and a solution for them is desired.

The damage caused by the draft in the opening will be described in more detail as follows.
First, the first damage is a problem of a decrease in heating efficiency in the cold season. That is, even if heavy oil or kerosene is burned and the inside of the vinyl house is warmed, if a gap is formed between the blocking sheet 4 and the opening edges 33 and 30 of the ventilation opening 1, it is inevitably necessary that the external cold air flows from the gap. Enters as a draft. Or conversely, warm air in the room is sucked out. As a result, the heating effect and the heating efficiency are inevitably lowered by the amount of the draft air flow.
By the way, it is not uncommon for vinyl houses to be small in size, with a ridge direction length of about 10 m, and large ones ranging from 30 m to 50 m. Correspondingly, there is a great deal of damage caused by drafts from the side windows, etc., and it is said that heating efficiency is reduced by about 20% at present. As a result, the fuel cost borne by producers (height of fuel in winter in Tohoku and Hokkaido is said to be several million yen) is heavy. As a result, the market price of the product is increased by the share of the fuel cost, so the marketability is impaired or the profit of the producer is diminished.
The second damage is that the growth of crops is significantly hindered by the adverse effects of cold air and cold air in the interior of the vinyl house where the above-mentioned air draft enters. As a result, crops as commodities cannot be produced, and eventually the problem of not being able to effectively utilize the site area of the vinyl house is a major concern for producers.

Therefore, the object of the present invention is to first compensate for the fluctuation even if the fluctuation of the wind direction and pressure of the wind blowing toward the vinyl house is caused by the continuous change of the wind speed. 4 and the sheet | seat sheet roll 4a and each opening edge 33 and 30 of the opening part 1 for ventilation implement | achieve the structure which does not generate | occur | produce, and eliminates the generation | occurrence | production cause of a draft from a structure. In other words, a structure that does not hinder the operation of opening and closing the ventilation opening 1 with, for example, the blocking sheet 4 and the like and that prevents the generation of a gap as much as possible is realized, so that the draft is generated in the room of the vinyl house. It is an object of the present invention to provide a draft air prevention structure that can surely prevent an inconvenient phenomenon of entering or conversely sucking out warm air in a room.
The next object of the present invention is implemented in a conventional vinyl house, the opening edges 33 and 30 of the ventilation opening 1, the blocking sheet 4, and the blocking sheet roll 4a in which the blocking sheet 4 is wound around the winding shaft 5. The construction of the draft ventilation structure that basically opens and closes the ventilation opening 1 by opening and closing the ventilation opening 1 in cooperation with the presser strap 9 that presses the outside from the outside is structurally solved and the implementation is implemented. It is to provide an easy draft air prevention structure.
A further object of the present invention is to prevent the deterioration of the heating effect and the poor growth of crops that occur due to the intrusion of the draft into the room of the vinyl house, and can increase the effective production of the vinyl house, It is to provide a draft prevention structure.

As means for achieving the above-mentioned object, the draft-venting structure for a draft-and-ventilated greenhouse according to the invention described in claim 1 is:
Along the mouth edge of the ventilation opening 1 formed in the greenhouse, or conversely, the window frame 50, 60 or the door frame 40 that opens and closes the ventilation opening 1, and the ventilation openings 1A, 1B. Air-carrying tubes 10a and 10b are installed on the surface portion that contacts the 1C mouth edge, and further, an electric fan 15 that takes in air, blows it into the air-sealed tube, and expands the tube is installed.
With the air sealing tubes 10a and 10b expanded, the blocking sheet 4 or the window frames 50 and 60, the door frame 40, and the ventilation openings 1A, 1B, and 1C operated in a closed state mediate the air sealing tubes. It is characterized in that it is closely connected to prevent the generation of a gap.

According to the invention described in claim 2, the draft ventilation preventing structure of the ventilation ventilation greenhouse is
One side edge of the blocking sheet 4 is fixed along one edge 3 of the ventilation opening 1 formed in the greenhouse, and the other edge of the blocking sheet 4 is wound around the sheet winding shaft 5. In the ventilation ventilation structure of the configuration in which the ventilation opening 1 is closed or opened by the blocking sheet 4 by rotating the sheet winding shaft 5 in the forward / reverse direction,
Out of the rim of the ventilation opening 1, along the other rims 30 and 33 except the rim 3 that fastens one side edge of the blocking sheet 4, on the outer surface side of the greenhouse covering sheets 7 and 8. In addition, air-filled tubes 10a and 10b with which the shut-off sheet 4 is in contact are installed, and an electric fan 15 that takes in air and blows it into the air-filled tubes 10a and 10b and expands the tubes 10a and 10b is installed.
In a state where the air-filled tubes 10a and 10b are expanded to the outer surface side of the greenhouse covering sheets 7 and 8, the shut-off sheet 4 operated in a closed state is configured to be in close contact with the air-filled tubes 10a and 10b.
Further, between the sheet stopper 3 that forms the upper edge of the ventilation opening 1 and the lower sheet stopper 31, the blocking sheet 4 and the sheet take-up shaft 5 and the blocking thereof are arranged in the vertical direction. The pressing string 9 that presses the sheet roll 4a from the outside is characterized by a configuration in which a required number is installed at intervals in the ridge direction.

The invention described in claim 3 is a draft-venting structure for a draft-and-ventilated greenhouse described in claim 1 or 2,
Condensed water, etc., among the air-filled tubes 10a, 10b provided on the outer surface side of the greenhouse covering sheet provided along the edge of the ventilation opening 1, or the air-filled tubes installed in the peripheral part of the window frame or door frame The tube in the lower part where the water flows down is characterized in that the diameter, arrangement and number of drain holes 16 sufficient to discharge the water droplets to the outside are provided.

According to the draft ventilation prevention structure of the greenhouse according to the present invention, the air-filled tubes 10a and 10b provided on the outer surface side of the greenhouse covering sheets 7 and 8 along the edge of the ventilation opening 1, or the window frame or the door frame Since the air-sealed tube installed in the peripheral portion of the tube is expanded with flexibility, a thick, elastic, and flexible lip is formed by the amount of expansion.
Therefore, when the blocking sheet 4 deployed by the rotation operation of the sheet winding shaft 5 is closed, or when the door frame or the window frame is opened or closed by manual operation or through an opening / closing mechanism such as a link mechanism, air is sealed in the ventilation opening. Since the tube expands to form a thick, elastic, and flexible lip, a uniform uniform surface is surely realized, and the formation of a gap is prevented.

In particular, in the case of an opening / closing structure using the blocking sheet 4 and the blocking sheet roll 4a, the close state is forcibly constrained because the outer side is pressed by a plurality of pressing strings 9 or the like.
In the case of a door frame or window frame that is opened and closed manually or through an opening and closing mechanism such as a link mechanism, the entire surface is securely contacted by pressing manually or through an opening and closing mechanism such as a link mechanism. The state is realized and the generation of the gap is prevented.
In particular, even if the shut-off sheet 4 or the door frame or window frame fluctuates according to the wind direction, wind pressure, and wind speed that blows continuously toward the vinyl house, the air-filled tube expands against the fluctuation operation. The gap does not occur in the contact portion by following the limit of the thickness or the flexible deformation performance.
Therefore, it is possible to surely prevent an inconvenient phenomenon that the draft air enters and exits the inside of the vinyl house through such a gap.
As a result, it is possible to prevent the inconvenience that the heating efficiency for heating the interior of the vinyl house is impaired due to the intrusion of the draft air or the warm air in the vinyl house leaks out. Therefore, the fuel cost for heating heavy oil or kerosene burned in the cold season can be reduced by, for example, about 20%. As a result, it is possible to suppress the shipping price of the product, or to reduce the savings to the profits of the producers, thereby obtaining an effect of promoting price competition.
The above-mentioned effects are excellent in economic effect because the materials necessary for carrying out the present invention are, in particular, consumption and consumption of air-filled tubes and electric fans, are inexpensive, and are easy to install. It can be noted that
In addition, as a result of being able to prevent outside cold air from entering into the greenhouse of the vinyl house as a draft, conventionally, crops grown in the place where the cold draft is in direct contact are significantly hindered by the adverse effects of the cold and the cultivation efficiency is reduced. Damage that can be reduced can also be prevented. As a result, the effective cultivation area of the vinyl house can be increased, the production amount can be increased, or a great effect can be obtained in improving the quality of the product.

It is the perspective view which illustrated notionally the principle of the structure of the draft wind prevention structure of this invention about the ventilation ventilation structure greenhouse by a winding shaft. FIG. 5 is a perspective view showing a structure of a draft ventilation preventing structure of a greenhouse with a ventilation shaft according to the present invention in more detail in accordance with the present embodiment, and also including a skylight, a wife window, an entrance door, and the like as conceptual diagrams. It is the perspective view which showed more specifically the structure of the principal part of the draft-wind prevention structure by a winding shaft further along the present Example. A is a longitudinal sectional view showing the principle of a conventional structure for opening and closing a ventilation opening by a winding shaft, and B is a longitudinal sectional view showing the construction principle of a draft air preventing structure according to the present invention. A is a longitudinal cross-sectional view showing the configuration and installation procedure of an air-sealed tube used for the draft-air prevention structure according to the present invention, and B is a part of a front view showing the installed state of the air-sealed tube. A and B are explanatory views showing an example of a change in configuration before and after connecting the air-sealed tube at the vertical and horizontal corners. A and B are explanatory views showing an example of a change in configuration before and after connecting the air-sealed tube at the vertical and horizontal corners. A and B are explanatory views showing a change example of the configuration before and after connecting the vertical and horizontal corner portions of the air-sealed tube using an elbow tube.

The draft ventilation prevention structure of a greenhouse according to the present invention is a peripheral portion of a window frame or a door frame that opens and closes the ventilation opening along the mouth edge of the ventilation opening formed in the greenhouse, or conversely. An air-sealed tube is installed on a surface portion in contact with the rim of the ventilation opening, and an electric fan that takes in air and blows it into the air-sealed tube to expand the tube is installed.
With the air-sealed tube inflated, the shut-off sheet 4 or the window frame, the door frame, and the ventilation opening that are operated in a closed state are in close contact with each other through the air-sealed tube to prevent the generation of a gap. .

In particular, in the case of a draft ventilation structure using a winding shaft in a greenhouse draft prevention structure, that is, one side edge of the blocking sheet 4 is fixed along one edge 3 of the ventilation opening 1 formed in the greenhouse, The other edge portion of the blocking sheet 4 is wound around the sheet winding shaft 5, and the ventilation opening 1 is closed or opened by the blocking sheet 4 by rotating the sheet winding shaft 5 in the forward and reverse directions. In the case of a ventilation structure greenhouse configured to perform, along the other rims 33 and 30 except the rim 3 that fastens one edge of the shielding sheet 4 among the rims of the ventilation opening 1. The air-sealed tubes 10a and 10b that circumscribe the shielding sheet 4 are installed on the outer surface side of the greenhouse covering sheets 7 and 8. Further, an electric fan 15 is installed to take in air and blow it into the air-filled tubes 10a and 10b to expand the tubes.
Then, the electric fan 15 is driven to expand the air-filled tubes 10a and 10b to the outer surface side of the greenhouse covering sheets 7 and 8, and the shut-off sheet 4 in a closed state circumscribes (closely contacts) the air-filled tubes 10a and 10b. The configuration.
Further, in the structure for preventing a draft in a greenhouse with a ventilation structure using the winding shaft 5, a vertical direction is provided between the sheet stopper 3 that forms the upper edge of the ventilation opening 1 and the lower sheet stopper 31. In the direction, a necessary number of pressing cords 9 that press the blocking sheet 4 and the sheet take-up shaft 5 and the blocking sheet roll 4a from the outside are provided at intervals in the ridge direction.
In addition, as a means to be used in combination with the presser strap or as a means to replace the presser strap, use a wide belt as wide as 20 cm as described above, or hold a moderately heavy pipe from the outside of the greenhouse. It should be noted that the means for attaching is implemented.

  In addition, with respect to each of the air-filled tubes 10a and 10b described above, the diameter, arrangement, and number of the water drops sufficient to quickly discharge the water drops to the lower portion 10a where water drops such as condensation that may occur in the tubes flow down. It is also important in practice to provide the drain hole 16.

First, an embodiment of the invention described in claims 2 and 3 and a structure for preventing draft air in a greenhouse with a ventilation ventilation structure using a winding shaft will be described.
As shown conceptually in FIGS. 1 and 2, a greenhouse with a simple structure represented by a vinyl house has a long ventilation in the direction of the ridge on the side of the greenhouse, for example, for the purpose of ventilation ventilation and indoor temperature control in the warm season. The opening 1 is typically formed in a rectangular shape full of the length of the greenhouse in the ridge direction. And the upper edge part of the interruption | blocking sheet | seat 4 is fastened and suspended along the sheet | seat stop material 3 which forms the one edge of the ventilation opening part 1, and an upper side edge part normally. The opposite edge of the blocking sheet 4, that is, the lower edge, is wound around a winding shaft 5 arranged in parallel with the upper edge (sheet stopper 3) of the ventilation opening 1 to form a sheet winding roll 4a.
That is, the rotating machine 6 is installed at a position where the winding shaft 5 is projected to the end of the end face side, and the rotating machine 6 is rotated in the forward rotation direction to wind up the blocking sheet 4 to a necessary height, The ventilation opening 1 is opened (opened) to a size (opening) suitable for the purpose of ventilation ventilation or temperature control.
Or, conversely, the winding shaft 5 is rotated in the reverse direction by the rotating machine 6 to lower the blocking sheet 4 to a necessary position, thereby narrowing the opening degree of the ventilation opening 1 or closing it in a fully closed state. Ventilation structure greenhouses of construction are already widely implemented and well known and well known.

About the ventilation ventilation structure greenhouse of the said structure, in this invention, three edge | sides except the sheet | seat fixing material 3 of the opening upper edge which fastened the upper edge part of the said shielding sheet 4 among the edges of the ventilation opening part 1 are provided. Using the sheet stoppers 33 and 33 on both the left and right sides forming the respective edges, and the sheet stopper 30 on the bottom side at the rim, the outer surface side of the greenhouse covering sheets 7 and 8 (see FIG. 4B) Moreover, it has the characteristic in the structure which installed the air sealing tube 10a, 10b which the interruption | blocking sheet | seat 4 circumscribes along each opening edge.
In the air-filled tubes 10a and 10b described above, in an appropriate position leading to the inside of the tubes, for example, in the embodiment illustrated in FIG. 1, in the upper position of one (or both) of the air-filled tubes 10b in both lateral positions, A fan motor 15 (product name) for blowing air using a small motor as a power source is installed. That is, the fan motor 15 is continuously operated so that air is taken in, and the air-filled tubes 10a and 10b are continuously inflated to a certain degree of expansion (see FIG. 4B). However, the fan motor 15 may be installed in a position separated from the air-sealed tube and connected using a connecting pipe.
Incidentally, even if the fan motor 15 is continuously operated for one month, the power consumption during that period is only equivalent to about 100 yen, and it is well known that it can be used at a very low cost.
The fan motor 15 can be implemented by installing a required number of units in a suitable place according to design or implementation needs. In addition, it is preferable that the air pressure in the air-filled tubes 10a and 10b is constantly measured and the automatic operation is continuously performed while the control is reflected in the operation of the fan motor 15, thereby saving the electricity bill.
In short, the air pressure in the air-filled tubes 10a, 10b need not always be kept in a fully expanded state. As illustrated in FIG. 4B, the back (inside) is configured to be supported by a greenhouse covering sheet (discarding sheet 7 or 8), so that the shielding sheet 4 is air together with the winding shaft 5 pressed by the pressing string 9. It is sufficient if the tube is pressed against the enclosing tubes 10a and 10b and inflated so that the flexible tube is in a state of being slightly crushed.
Thus, as schematically shown the flow line 20 of the outside air (wind) in FIG. 4B, there is no gap due to the close state of the blocking sheet 4 and the air sealing tube 10a, and the entry of the clearance air is sure. To be blocked. The effect of preventing the draft air will be apparent when compared with the conventional structure shown in FIG. 4A. In the conventional structure, the configuration and operation effect of preventing the draft air according to the present invention are compared with the configuration in which the winding shaft 5 and the sheet winding roll 4a are simply suspended by the weight effect, and the tensioned blocking sheet 4 is in contact with the lip and closes the gap. You will understand the superiority of.

An example of the configuration necessary for the air-filled tubes 10a and 10b described above to reliably realize a close contact state with the blocking sheet 4 is shown in FIGS.
In FIGS. 5A and 5B, for example, a plastic sheet used as a covering material for a vinyl house is used for the production of the air-filled tube 10a, and a vertical band 2H is cut into a long band with a width of about 350 mm. Fold it almost in half. Then, the width h (at least about 80 mm) necessary and sufficient to fix one edge (the upper edge in the illustrated example) with the sheet stopper 30 is lowered so that it remains as a free part. A long welding tube 10a having a sealing structure is formed by forming a welding processing portion S that is continuous in a band shape having a width of about 5 cm.
The sheet stopper 30 that forms each edge of the ventilation opening 1 together with the free cover h outside the welding processing portion S together with the greenhouse covering sheet (in the illustrated example, the discard sheet 7 or 8). (Or 33), and the air-filled tubes 10a and 10b are installed on the outer surface of the discarded tension sheet 7 or 8.

5A and 5B, in consideration of the case where the air-sealed tube 10a is installed in the horizontal direction along the lower edge of the ventilation opening 1, the air-filled tube 10a is caused to flow down due to condensation or the like. As a means for appropriately discharging the water droplets to the outside, a drain hole 16 having an appropriate diameter, arrangement and number is provided in the lower portion of the air-sealed tube 10a so that the water droplets flowing down can be quickly discharged to the outside. Is shown. In the case of the illustrated example, the drain holes 16 are arranged in a total of six rows on both side surfaces in the vertical direction around the lower fold of the air-filled tube 10a, and have an interval P of about 50 cm in the tube longitudinal direction. A configuration example provided in multiple rows is shown. The diameter of the drain hole 16 is about φ3 mm at the maximum in consideration of minimizing air leakage.
However, the drain hole 16 is not limited to the above arrangement and configuration because it is only necessary to discharge the liquid generated in the air-sealed tube 10a to the outside as quickly as possible to prevent the harmful effects of water pools.

Next, FIGS. 6 to 8 show a series of the air-filled tubes 10a and 10b that are prepared and installed as described above in the concave shape exemplified in FIG. FIG. 6 shows different embodiments of a method of manufacturing a configuration in which the corner portion is connected, particularly, a method of manufacturing a corner portion connected in a series of communication states.
First, in FIG. 6A, the rectangular portion C <b> 1 including the welding processing portion S is cut at the end of the air-sealed tube 10 a located on the lower edge side of the ventilation opening 1. Moreover, about the air enclosure tube 10b located in the both horizontal opening edge of the ventilation opening part 1, the shape which performed the cutting process about the rectangular part C2 including the welding process part S is illustrated in the lower end.
In FIG. 6B, the rectangular portions C1 and C2 cut as described above are combined to form a right angle connection between the tubes, and the connection portion is integrally joined by, for example, the adhesive tape 20. Is shown.

Next, FIG. 7A shows a state in which cutting is performed at about 90 degrees at an intermediate position of the air-filled tube 10a that is originally connected to one. Then, in FIG. 7B, the right air-sealed tube 10b is raised with respect to the cut portion, and the cut portion is joined, and then integrally joined with, for example, the adhesive tape 20 to connect the vertical / rim air-sealed tube 10b. The Example of the structure joined in series is shown.
Further, in FIG. 8A, an elbow tube 21 having a shape that can be fitted and connected to the respective tube portions of the air-filled tubes 10a and 10b installed on the lower edge and both lateral edges of the ventilation opening 1 is prepared.
In FIG. 8B, the elbow tube 21 is used to connect the air sealing tube 10a on the opening lower edge side and the air sealing tube 10b on the vertical edge side. Further, the embodiment is shown in which the connecting portion is firmly joined with the adhesive tape 20 and completed.
However, the above is only a connection example of the air sealing tube 10a at the lower edge of the ventilation opening 1 and the air sealing tube 10b at the vertical edge located on both sides thereof, and is not limited to the above configuration. Any configuration can be implemented as long as it can be installed in a configuration that communicates in series along each edge of the ventilation opening 1.

Next, although the order has been changed, it is the invention described in claim 1 on the premise of understanding the configuration of the first embodiment, and the ventilation by the window frame and the door frame without using the winding shaft and the blocking sheet. An embodiment of a draft air prevention structure for a greenhouse with a ventilation structure will be described.
That is, in the ventilation ventilation greenhouse, the configuration in which ventilation ventilation is performed using the winding shaft and the blocking sheet is mainstream, but as an auxiliary and supplementary facility, opening / closing of the doorway door 40 illustrated in FIG. It is generally practiced to prepare ventilation and ventilation equipment by opening and closing the frame 50 or opening and closing the skylight 60.
Therefore, the above-mentioned problem of the draft air naturally occurs in the entrance / exit opening 1A, the wife window opening 1B, and the skylight opening 1C, and countermeasures are required.
Therefore, the present invention is characterized in that the airflow prevention structure in the entrance / exit opening 1A, the wife window opening 1B, and the skylight opening 1C is configured and implemented as follows using the air-sealed tube 10a.
Although the basic concept is the same as that of the first embodiment, as a specific means, in order to open and close the door frame 40 and the window frames 50 and 60, in order to open and close the doorway opening 1A, the wife window opening 1B, and the skylight opening 1C. Can be subjected to physical and mechanical forces. Therefore, the configuration using the physical and mechanical forces is different from the embodiment using the winding shaft 5 and the blocking sheet 4.
That is, the opening / closing of the door 40 shown in FIG. 2 is usually manually opened and closed by a vinyl house user. Therefore, assuming the above usage, the air-filled tube 10a provided with the fan motor 15 is installed and expanded along the upper and lower opening edges of the entrance / exit opening 1A. Alternatively, among the one or two door frames 40 that open and close the doorway, along the vertical edge on the free end side (rotation side) where the door frames are butted against each other, at least in the vertical edge direction on one side thereof, An air-filled tube 10a provided with a fan motor 15 is installed and expanded.
With this configuration, when the user manually closes the door 40, the air sealing tube is closed by applying a slightly strong force to the door frame to increase the pressing force to the air sealing tube 10a. The clearance of the gap 10a can be effectively eliminated, and the adverse effect of the draft can be prevented.

In addition, in the case of the configuration in which the end window opening 1B shown in FIG. 2 is opened and closed by a single opening type end window frame 50, the edges of the three sides excluding the hinge position of the end window frame 50 in the end window opening 1B. The air-filled tube 10a provided with the fan motor 15 is installed along with the air-opened tube 10a provided with the fan motor 15 along the corresponding three side window opening edges of the wife window frame 50. Then, when the tube is expanded, it is possible to realize a draft air prevention structure.
That is, as a means for opening and closing the end window opening 1B by a single opening type, a link mechanism 70 using a spring or the like is usually employed. Therefore, an operation of applying a slight pressure to the closed state of the window frame through the link mechanism 70 is performed. If it does so, a contact state with the said expanded air sealing tube 10a will become close, and it will become a structure which prevents a draft.
Further, in the case of the skylight shown in FIG. 2 that is opened by pushing upward and closed for lowering, the skylight frame 60 is formed along the entire periphery of the opening of the skylight opening 1C or conversely. By installing the air-sealed tube 10a provided with the fan motor 15 along the entire circumference of the outer peripheral edge, a structure for preventing a draft air can be similarly implemented.
That is, when the skylight frame 60 is opened / closed by the opening / closing mechanism 80, and the skylight frame 60 is pulled down and closed tightly, a sealed state without any gap can be realized through the air-filled tube 10a, thereby preventing a draft. .

  Although the present invention has been described based on the preferred embodiments, it is not limited to the configuration of the above embodiments. It should be noted that design changes and other modifications and applications made by those skilled in the art as needed are included without departing from the scope of the present invention.

1 Ventilation openings 3, 31, 33 Opening edge sheet stopper 4 Blocking sheet 5 Sheet winding shaft 7, 8 Greenhouse coating sheet (discarded sheet)
10a, 10b Air-filled tube 15 Fan motor 16 Drainage hole 40 Entrance / exit door 50 Wife window frame 60 Skylight frame

Claims (3)

Air is sealed along the edge of the ventilation opening formed in the greenhouse, or conversely, in the peripheral part of the window frame or door frame that opens and closes the ventilation opening and in contact with the edge of the ventilation opening. A tube is installed, an electric fan that takes in air and blows it into the air-sealed tube and expands the tube is installed,
With the air-sealed tube inflated, the shut-off sheet or the window frame, the door frame, and the door frame, which are operated in a closed state, are brought into close contact with each other through the air-sealed tube to prevent the generation of a gap. Ventilation structure with a draft ventilation structure for greenhouses. One side edge of the shielding sheet is fixed along one edge of the ventilation opening formed in the greenhouse, and the other edge of the shielding sheet is wound around the sheet winding shaft. In the ventilation ventilation structure of the configuration that closes or opens the ventilation opening with the shut-off sheet by rotating in the forward / reverse direction,
An air-filled tube with which the shielding sheet is in contact with the outer surface side of the greenhouse covering sheet along the other edges excluding the edge that fastens one side edge of the shielding sheet among the edges of the ventilation opening. Installed, an electric fan that takes in outside air and blows it into the air-filled tube and expands the tube is installed,
In a state where the air-sealed tube is expanded to the outer surface side of the greenhouse covering sheet, the shut-off sheet operated in a closed state is configured to be in close contact with the air-sealed tube,
Further, the sheet and the sheet take-up shaft and its sheet roll are pressed from the outside in the vertical direction between the sheet stopper forming the upper edge of the ventilation opening and the lower sheet stopper. A draft ventilation structure for a greenhouse with a ventilation ventilation structure, characterized in that the required number of presser straps are installed in the ridge direction at intervals. Of the air-filled tube provided on the outer surface side of the greenhouse covering sheet provided along the edge of the ventilation opening, or the air-filled tube installed in the peripheral part of the window frame or door frame, the lower side where the condensed water flows down 3. A draft-ventilating structure for a draft-and-ventilation greenhouse according to claim 1 or 2, wherein the tube of the site is provided with a caliber, arrangement and number of drain holes sufficient to discharge the water droplets to the outside. .

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