JP3172466U - Air-conditioning greenhouse curtain - Google Patents

Abstract

An air-conditioning greenhouse curtain having an improved power saving effect is provided.
SOLUTION: The upper end of a curtain 1 made of a polyvinyl alcohol resin having an upper film 2 as an agricultural polyolefin-based special film and a lower film 3 as a cloth-like surface faces the floor surface side. The holding wire 9 and a shelf line 10 narrower than the distance between the upper films are attached to the lower surface of the lower film 2 so that the blower 4 for sending gas into the curtain 1 makes the stop time longer than the blowing time by operating the timer. Set to.
[Selection] Figure 3

Description

  The present invention relates to a blower-controlled greenhouse curtain that can be stretched near the ceiling of a greenhouse for plant cultivation to keep the greenhouse at an appropriate temperature and increase power saving efficiency.

  The greenhouse needs to be kept at an appropriate temperature for plant cultivation. For this reason, film curtains are stretched near the ceiling and on both sides. Recently, this curtain is composed of a double-structured film made of plastic or the like, and is widely known to enclose a gas into a bulging shape (see, for example, Patent Documents 1 and 2).

Japanese Patent Laid-Open No. 52-81242 JP 2005-333932 A

  Patent Document 1 discloses a temperature control method and temperature control for an agricultural house characterized in that the temperature in the house is adjusted by enclosing gas in the air chamber of a double plastic film that forms an air chamber between the films. Plastic films are described. With this technology, it can be understood that the whole is expanded by the gas enclosed in the air chamber, and the inside of the greenhouse is warmed by the heat of the gas, but when the gas encapsulation is stopped, the film gradually cools and water droplets stay in the film However, since the films are adsorbed by the water droplets, there is a problem that the operation when the film is shrunk and opened does not go smoothly.

  Patent Document 2 describes an agricultural air membrane film in which a film made of a polyolefin resin or a vinyl chloride resin is used as a raw material and is formed in a tube shape by overlapping two sheets, and a large number of air vent holes are distributed in the tube. In this technology, it is encouraging that the heat retention efficiency in the greenhouse is improved by the moderately sized air vent hole, but it is unknown whether or not sufficient condensation can be suppressed when the air is extracted, When water droplets remain, the stacked films are adsorbed to each other and there is no fear of causing trouble in the folding operation.

  By the way, the conventional ones naturally use a blower to bulge the film, but the blower is frequently used at night and winter when the temperature in the greenhouse has dropped, and usually the blower is fully rotated to keep the greenhouse constant. The technique of keeping the temperature is taken. However, it is not preferable to always operate the blower in this manner in terms of power saving, and there is a concern that the life of the device may be shortened because the burden on the device is excessive.

  The present invention has been made in view of such a conventional technique, and adjusts the operation of the blower for expanding the two films constituting the curtain to increase the power saving efficiency and reduce the burden on the device. The present invention provides an air-conditioning greenhouse curtain that operates normally over a long period of time.

  That is, the present invention is a greenhouse curtain in which a curtain composed of two upper and lower films is stretched in the vicinity of the ceiling of the greenhouse, etc., and the gas is enclosed in the curtain. The curtain end, which is made of polyvinyl alcohol resin and hangs along the vicinity of the front and rear faces of the greenhouse, faces the floor, presses on the upper surface of the upper film, and holds the upper film on the lower surface of the lower film. The purpose of the air conditioning greenhouse curtain is characterized by arranging a shelf line narrower than the interval, and a fan that sends gas into the curtain repeats on and off by making the stop time longer than the air blowing time by timer operation It is said.

  The timer is set to move the blower for about 30 minutes to 1 hour and then stop the operation of the blower for about 3 hours.

  The upper film that makes up the curtain does not allow gas to escape and rainwater does not enter, but the lower film has excellent moisture permeability, heat retention, etc., and since it is processed into a cloth form, if gas is sent into the curtain From the swollen lower film, gas gradually emanates from the entire surface. The blower for sending gas into the curtain is not something that once switched on operates continuously for hours, but the stop time is set shorter than the blowing time by the timer attached to the blower than before High power saving effect. In the conventional type that continuously blows air, the curtain is constantly filled with gas, so not only the high heat that is not expected to stay with the passage of time but also the heat in the greenhouse reaches the appropriate temperature or more. It's hard to say that it's appropriate. Originally, it is ideal that the gas is sufficiently distributed in the curtain with a short time of air blowing, and the temperature in the curtain is sufficiently maintained by using a material like the present invention as a film, and its excellent heat insulation effect Therefore, it was confirmed that the temperature setting in the greenhouse would not be hindered.

  If the operating time of the blower is set shorter than the stop time by setting a timer, the residence time of excess gas is suppressed, so there is no condensation due to sudden cooling when the curtain is opened, and the films do not adsorb by water droplets. Is smoothly moved in the opening direction. The curtain that has moved in the opening direction converges at a predetermined position. However, even when the curtain moves again in the closing direction, there is no adhesion due to water droplets in the adjacent folding area, and in this case, smooth operation is expected. And the intermittent operation of the blower can avoid the occurrence of stress of the equipment such as continuous operation, and the secondary effect that the aging deterioration is suppressed accordingly.

It is an external view of the curtain stretched in the greenhouse. It is a block diagram which shows the outline of this invention. It is explanatory drawing which looked at the tension state of the curtain from the side of the greenhouse. It is explanatory drawing which looked at the tension state of the curtain from the wives side of a greenhouse.

  A mode for carrying out the invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, a curtain 1 is stretched over the greenhouse A to maintain an appropriate temperature in the greenhouse. The curtain 1 has a double structure in which two films of an upper film 2 made of a polyolefin special film for agriculture and a lower film 3 formed of a polyvinyl resin in a cloth form are overlapped, and gas is sent from the blower 4 into the curtain. As a result, the whole bulges, and the gas gradually fills the greenhouse A from the lower film 3 in the cloth form.

  The front and rear surfaces of the curtain 1 are suspended along the wife side of the greenhouse A, and gas is discharged from the opening end 1a to the floor surface of the greenhouse A. The curtain 1 is preferably provided with an auxiliary curtain 5 on the side of the wife and a side curtain 6 on the side of the greenhouse. These are communicated with the curtain 1 via the branch pipe 7, and the gas from the curtain 1 is spread evenly to the greenhouse A. In order to prevent outflow of gas from the wife side and both sides, it is suitable for maintaining an appropriate temperature in the greenhouse A and exhibits a sufficient heat insulating effect.

  The blower 4 that sends gas to the curtain A is disposed at a necessary place of the curtain A, and the adjustment control of the blowing time is performed by the timer 8. In other words, it is natural that the conventional operation of the blower is performed over a long period of time, so that a considerable amount of power is consumed and the operation is unrelated to so-called power saving measures. By attaching to the blower 4, it is possible to increase the power saving effect. This is often left to the configuration of the curtain 1 itself, and it can be mentioned that the lower film 3 has a gas heat retaining effect due to the formation of the polyvinyl resin in the cloth state. That is, the lower film 3 in the form of a cloth can be spontaneously released such that the gas oozes out from the film, unlike the case where a small hole is made in the film, and the time for the oozed gas to stay in the greenhouse is sufficiently recognized. Because.

  The timer 8 should be 24 hours and can be switched every 15 minutes, but it is natural that the blowing time varies depending on whether the greenhouse is cold or not, and depending on the size of the greenhouse. Even if these are taken into consideration, it is sufficient to operate for 30 minutes to 1 hour, and the appropriate temperature of the greenhouse A is maintained even if the operation is stopped for about 3 hours after the ventilation of the timer 8. If the timer is set so that the blower 4 is operated again after the lapse of 3 hours, the cooling of the greenhouse is avoided by repeating the operation, and the growth of plants becomes a favorable environment.

  3 and 4 show a state of curtain stretching in the greenhouse A. In FIG. 3, the upper film 2 of the curtain 1 bulged by the gas sent from the blower 4 is recessed at the location of the holding line 9, and the lower film 3 However, when the interval between the holding lines 9 is set to 150 cm, the interval between the shelf lines 10 is 50 cm, and the interval between the two is narrower in the shelf line 10. This is because the shelf line 10 serves as a support because the lower film 3 is more likely to be loaded when the gas is filled than the upper film 2. The upper film 2 and the lower film 3 are restrained from bulging by the holding line 9 and the shelf line 10, and the curtain 1 is wave-shaped as a whole although the bulge is different in the upper and lower parts.

  The wife's auxiliary curtain 5 that communicates with the curtain 1 via the branch pipe 7 also swells as soon as the curtain is filled with gas, and the side curtain 6 also bulges, and each of them exhibits a thermal function, so that the warming state in the greenhouse A Remains favorable. When the operation of the blower 4 is stopped by the timer operation, the gas in the curtain 1 also naturally decreases. However, the curtain 1 heated by the gas at the time of filling does not cool down rapidly and does not open the curtain 1, so that the gas As described above, since there is no problem with the heat insulation state in the greenhouse for about 3 hours, a great power saving effect is expected.

  When the greenhouse A is closed by the curtain 10, both sides of the greenhouse are also closed by the side curtain 6 as shown in FIG. 4, but when opened, the individual curtain 10 is moved to the center and both sides by the operation of the drive wire 11 that is movable by the motor M. The ceiling part is opened because each moves toward the side pulley 12 and converges, and the auxiliary curtain 5 and the side curtain 6 are opened at any time by using the hoisting machine 13.

  In the above-described embodiment, specific numerical values such as timer time are shown. However, the numerical values before and after the numerical values are also included within the range where the object effect of the present invention is achieved, and the opening / closing operation and air supply means of the curtain 1 are also included. Can adopt a conventionally well-known method, and the present invention is a means for further improving the heat insulation state of the greenhouse A, for example, a vinyl sheet is installed in a flat L-shape at the corner of the greenhouse to prevent gas leakage from this place. However, they also belong to the category of free implementation of the present invention.

A Greenhouse 1 Curtain 2 Upper film 3 Lower film 4 Blower 5 Auxiliary curtain 6 Side curtain 7 Branch pipe 8 Timer 9 Holding line 10 Shelf line 11 Driving wire 12 Pulley 13 Winding machine M Motor

Claims (1)

Polyvinyl alcohol in which the upper film is a special polyolefin film for agriculture and the lower film is cloth-like in a greenhouse curtain in which a curtain consisting of two upper and lower films is stretched in the vicinity of the ceiling of the greenhouse, etc. The curtain is made of resin and hangs along the vicinity of the front and rear faces of the greenhouse, with the open end facing the floor, pressing lines on the upper surface of the upper film, and narrower than the upper film on the lower surface of the lower film A blower-controlled greenhouse curtain characterized in that a blower that sends gas into the curtain is repeatedly turned on and off by a timer operation with a stop time longer than the blower time.
[0009]
The air conditioner type greenhouse curtain according to claim 1, wherein the timer is set to move the blower for about 30 minutes to 1 hour and then stop the operation of the blower for about 3 hours.

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