WO2019203345A1

WO2019203345A1 - Ventilation system for forcing cultivation house, and auxiliary unit therefor

Info

Publication number: WO2019203345A1
Application number: PCT/JP2019/016813
Authority: WO
Inventors: 和彦藤森; 泰雄鯵坂
Original assignee: 和彦藤森; 泰雄鯵坂
Priority date: 2018-04-20
Filing date: 2019-04-19
Publication date: 2019-10-24
Also published as: KR20200133792A; JPWO2019203345A1; JP7174694B2

Abstract

[Problem] To be able to adequately ventilate the interior of a forcing cultivation house even in an environment with almost no wind. [Solution] An auxiliary unit 10 comprising: an opening and closing valve 32 that opens and closes when the temperature inside the forcing cultivation house 1 exceeds a prescribed value; and a scirocco fan 20 that receives the wind around the forcing cultivation house 1 and rotates, the auxiliary unit 10 being attached to a ventilation device 50 having a cylindrical shape and the auxiliary unit 10 supplementing the ventilation by the ventilation device 50, wherein the auxiliary unit 10 further comprises a solar panel 13, a DC motor 15 that is driven by the power generated by the solar panel 13, and a roller 17 having a shaft center that is connected to the motor shaft 15A of the DC motor 15, the roller 17 rotating the scirocco fan 20.

Description

Forcing cultivation house ventilation system and its auxiliary unit

[Technical Field] The present invention relates to a ventilation system and a supplementary unit for a forcing cultivation house, and more particularly, to a ventilation system and a supplementary unit for a forcing cultivation house for ventilating inside a promotion cultivation house such as a vinyl house.

Patent Document 1 discloses a cylindrical ventilation with an open / close valve that opens and closes when the temperature in the greenhouse exceeds a predetermined value and a sirocco fan that rotates in response to the wind around the greenhouse. An apparatus is disclosed.

This ventilator controls the opening and closing of the on-off valve using a shape memory alloy whose length changes depending on the temperature change. For this reason, if the temperature in the greenhouse exceeds a predetermined value, the on-off valve is opened to start ventilation to lower the temperature in the greenhouse, and then opens and closes when the temperature in the greenhouse drops below the specified value. Ventilation can be completed by closing the valve.

Since the ventilator disclosed in Patent Document 1 adopts the above-described configuration, it is possible to ventilate the greenhouse without a driving source such as a commercial power supply, which is preferable from the viewpoint of ecology. .

Korean Patent No. 332421

However, since the ventilator disclosed in Patent Document 1 uses only the wind around the greenhouse as the rotational power of the sirocco fan, the open / close valve is opened even in an almost windless environment. However, since the sirocco fan does not rotate, the inside of the greenhouse cannot be ventilated sufficiently.

Therefore, it is an object to make it possible to sufficiently ventilate the house for forced cultivation even in an almost windless environment.

In order to solve the above problems, the present invention provides:
A ventilating device having a cylindrical shape, comprising an on-off valve that opens and closes when the temperature in the forcing cultivation house exceeds a predetermined value, and a sirocco fan that rotates by receiving the wind around the forcing cultivation house An auxiliary unit for assisting ventilation by the ventilation device,
Solar panels,
A DC motor driven by the power generated by the solar panel;
A roller having a shaft connected to a motor shaft of the DC motor and rotating the sirocco fan;
Is provided.

The ventilator is
It is possible to use one in which the axial center of the duct portion in which the on-off valve is provided in the cylinder and the sirocco fan adjacent to the duct portion are aligned.

The sirocco fan may be provided with a plurality of wings extending in a direction along the axis of the ventilator main body on a side surface and a top plate in a plane direction orthogonal to the axis. In this case, the solar panel may be attached to the top plate part.

In addition, the said ventilation apparatus can be arrange | positioned in the aspect in which the said sirocco fan is located outside the said house for forced cultivation in the opening part formed in the said house for forced cultivation.

In addition, the house ventilation system for forcing cultivation of the present invention,
The above auxiliary unit;
And a ventilation device to which the auxiliary unit is attached.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view showing a schematic configuration of a forced ventilation house ventilation system 100 according to an embodiment of the present invention. FIG. 2 is an external view in which FIG. 1 is partially cut away when viewed from the lateral direction. In addition, in FIG. 1, FIG. 2, the greenhouse 1 which is a house for forced cultivation in which the house ventilation system 100 for forced cultivation is installed is also illustrated.

(Description of configuration)
First, the configuration of the forced ventilation house ventilation system 100 will be described. Prior to this, the greenhouse 1 will be outlined. A resin film 2 and

pipes

3A and 3B extending in a direction orthogonal to the extending direction of the

pipes

5A and 5B are provided. Moreover, the opening part 2A for arrange | positioning the house ventilation system 100 for forced cultivation is formed in the resin film 2. As shown in FIG.

On the other hand, the forcing cultivation house ventilation system 100 is roughly divided into an auxiliary unit 10 and a ventilation device 50 which will be described below. Moreover, the ventilation apparatus 50 is divided roughly into the sirocco fan 20 and the duct part 30 which are demonstrated below.

As shown in FIG. 1, the auxiliary unit 10 receives the substantially dome-shaped housing 12 and the shaft portion 23 that is passed through the shaft center of the housing 12 to connect the housing 12 and the shaft portion 23. And a nut 11. The auxiliary unit 10 may be made of a relatively light material such as resin or aluminum in consideration of the balance of the center of gravity.

The casing 12 is arranged with a gap of about several millimeters between the sirocco fan 20 and the top plate portion 21 so that a DC motor 15 (FIG. 3), which will be described later, receives ambient wind and is cooled. Yes. The shaft portion 23 hangs down from the auxiliary unit 10, extends to the bearing portion 28 in the sirocco fan 20, and is coupled thereto. The shaft portion 23 can be pipe-shaped for weight reduction, but this need not be the case.

FIG. 3A is a detailed explanatory diagram of the auxiliary unit 10. FIG. 3B is an external view of a part of FIG. 3A viewed from the lateral direction. As shown in FIG. 3, the auxiliary unit 10 includes a solar panel 13 located in a depression in the oblique portion of the housing 12, a transmission line 14 that transmits power generated by the solar panel 13, and a transmission line 14. A DC motor 15 that is driven at a rotational speed proportional to the amount of power transmitted through the motor and is capable of free rotation when no power is transmitted, and a shaft center is connected to the motor shaft 15A of the DC motor 15 and is circular. A roller 17 that rotates the sirocco fan 20 whose peripheral part is in contact with the top plate part 21 and a weight part 16 that is slightly lighter in weight than the DC motor 15 are connected to the other end part. And a connecting portion 18 having a bracket having one end rotatably connected between the seesaw portion 19 and the center portion of the seesaw portion 19 and the other end connected to the housing 12.

The solar panel 13 can be, for example, a polycrystalline silicon type. The maximum output voltage of the solar panel 13 can have a capacity of about 1.5 V and a maximum current of about 500 mA.

The DC motor 15 may be adapted to the conditions of the solar panel 13. In the case of the specifications of the solar panel 13, the DC motor 15 rotates at a maximum input voltage of about 1.5 V, a maximum input current of about 300 mA, and about 1000 rpm to 1500 rpm. What is necessary is just to use.

The reason why the weight of the weight portion 16 is slightly lighter than the weight of the DC motor 15 is that the surface pressure of the roller 17 is almost the smallest within a range in which rotation can be transmitted to the upper surface of the top plate portion 21. This is to achieve a surface pressure. In this way, even when the starting torque of the DC motor 15 is insufficient, the roller 17 can rotate while hopping with respect to the top plate portion 21.

Then, the top plate portion 21 is rotated by the frictional force generated when the roller 17 comes into contact with the top plate portion 21. Therefore, the sirocco fan 20 is operated under the condition that the inertia of the sirocco fan 20 and the rotational torque of the DC motor 15 are balanced. Continuous rotation can be obtained.

When the roller 17 is provided at a position about 60 mm in the radial direction from the rotation center of the top plate portion 21, the rotational speed of the sirocco fan 20 is approximately 200 rpm under the above-described conditions. Therefore, the ventilation capacity of the forced ventilation house ventilation system of this embodiment can be secured even at this rotational speed.

The roller 17 is not limited to this, but has a diameter of about 35 mm to 45 mm, a rotation speed of about 1000 rpm to 1500 rpm, a pressing force of about 5 g to 15 g, and a combined weight with the DC motor 15 at most. It can be 100 g or less, preferably about 60 g or less. Moreover, the thing made from resin can be used.

When such a roller 17 is used, the sirocco fan 20 can be rotated by the electric power from the solar panel 13 and the wind can be blown even during the weather when sufficient electric power cannot be obtained from the solar panel 13. The rotation of the received sirocco fan 20 is not hindered by contact with the roller 17.

As shown in FIG. 1, the sirocco fan 20 has an opening through which the shaft portion 23 passes and has a disk-shaped top plate portion 21 in a plane direction perpendicular to the axis of the ventilation device 50 main body, and the top plate portion 21. A plurality of wing parts 22 extending in the direction along the axis of the ventilation device body in the periphery, a cylindrical part 25 formed integrally with the top plate part 21, for example, through which the shaft part 23 is passed, A ball bearing 24 positioned between the upper and lower end portions and the shaft portion 23, and a tripod-like connecting portion 27 that connects the bearing portion 28 and the duct portion 30 are provided.

The sirocco fan 20 has a weight of about 0.5 kg to 1 kg. For this reason, it is good to use a lightweight thing like resin or aluminum. The top plate portion 21 has an outer diameter of about 200 mm to 300 mm and a thickness of about 2.0 mm to 5.0 mm. The wing portion 22 has a length of about 150 mm to 300 mm, a width of about 20 mm to 40 mm, a thickness of about 3.0 mm to 5.0 mm, and a number of about 20 to 40.

The duct portion 30 is configured to shift the open / close valve 32 which is located on the upper surface of the open / close valve 32 and the disc-shaped open / close valve 32 positioned in the cylindrical housing 31 to the closed state. A weight portion 34, a stopper 33 which is located on the lower surface of the on-off valve 32 and maintains the level of the on-off valve 32 in the closed state, and is connected to a boss hole provided in the on-off valve 32 to connect the on-off valve 32. A shaft 35 for rotating, a disk-shaped guide roller 36 connected to the shaft 35 and rotating the shaft 35, and a flexible wire 37 that can be wound around the side surface of the guide roller 36. A wire receiving portion 40 having one end portion to which the wire 37 is attached and the other end portion that is threaded, and a spring 38 made of a shape memory alloy made of titanium, nickel, or the like that is passed through the wire receiving portion 40. And one of the springs 38 And an adjustment unit 39 for adjusting the opening and closing temperature of the switching valve 32 is screwed into the threaded wire receiving section 40 with receiving the.

FIG. 1 shows a case where the on-off valve 32 is closed. FIG. 2 shows a case where the on-off valve 32 has shifted from a closed state (broken line) to an open state (two-dot chain line). As shown in FIG. 2, even when the on-off valve 32 is in the open state, the maximum displacement angle is less than 90 degrees with the shaft portion 35 as the center.

FIG. 4 is a bottom view of the sirocco fan 20 shown in FIG. As shown in FIG. 4, each wing portion 22 has a cross section orthogonal to the longitudinal direction curved in the same direction on both the inner and outer peripheral sides. It is not necessary that all the wing portions 22 have the same shape, and noise can be prevented by slightly changing the wing portions 22. In general, each wing portion 22 is designed to increase in thickness as it moves from the central portion of the top plate portion 21 to the outer peripheral portion.

With this configuration, when the wind blowing around the wing portion 22 hits the sirocco fan 20, the sirocco fan 20 is provided with the ball bearing 24 and the like. 20 rotates. At this time, whether or not the sirocco fan 20 rotates and the direction of rotation do not depend on the wind direction.

When the sirocco fan 20 rotates, the air in the sirocco fan 20 is exhausted from between the wings 22 to the outside of the sirocco fan 20 and flows toward the leeward side.

(Description of mounting method)
As described above, the opening 2 </ b> A is formed in the resin film 2. The opening 2 </ b> A may be formed by opening a hole smaller than the diameter of the duct portion 30 with a cutter or the like in correspondence with the house ventilation system 100 for forced cultivation, more specifically, the arrangement position of the ventilation device 50.

Further, before and after the formation of the opening 2A,

pipes

6A and 6B for arranging the ventilation device 50 are prepared. In FIG. 1, the

pipes

6A and 6B are about three times as long as the diameter of the ventilator 50 and have the same diameter as the

pipes

3A and 3B as an example. What is necessary is just to prepare the conditions which match the arrangement conditions of

pipe

3A, 3B.

Next, the

pipes

6A and 6B are connected to the

pipes

3A and 3B via the

fixtures

7A and 7B in a manner that they are parallel to each other. Separately from this, the auxiliary unit 10 is press-fitted from the lower side of the opening 2A in a state where the substantially ring-shaped mounting jig 8 is attached to the outer periphery of the duct portion 30, and the ventilation device 50 is opened. Arranged in part 2A.

Specifically, as shown in FIG. 1 and the like, the ventilator 50 is disposed under the condition that the sirocco fan 20 passes through the resin film 2 and the duct portion 30 is located inside and outside the resin film 2.

Here, the attachment jig 8 has a hook portion 9 that can be suspended from the

pipes

6A and 6B. Therefore, the hook portion 9 may be suspended from the

pipes

6A and 6B. Thus, by using the attachment jig 8, the ventilator 50 can be connected to the greenhouse 1 through the

pipes

6A and 6B and the

fixtures

7A and 7B.

(Description of action)
The ventilator 50 may be set so that the spring 38 extends when the temperature in the greenhouse 1 reaches a predetermined value (for example, 25 ° C.) or more. This setting is performed by appropriately rotating the adjustment unit 39 to adjust the position in the wire receiving unit 40.

In this embodiment, the on-off valve 32 is opened and closed by utilizing the property of the spring 38 that is soft and weak at low temperatures but hard and strong at high temperatures. The spring 38 is not limited to this, but for example, there is a spring force of about 200 g when the ambient temperature is around 10 ° C., but when the ambient temperature rises to around 50 ° C., the spring force is about 600 g. What goes up can be adopted.

When the temperature in the greenhouse 1 is lower than 25 ° C., for example, the on-off valve 32 is in a closed state, so that even if the sirocco fan 20 rotates by receiving wind, There is no positive exhaust through 30.

However, when the temperature in the greenhouse 1 becomes 25 ° C. or more, for example, the spring 38 extends to push down the adjustment portion 39, and accordingly, the lower end of the wire 46 is displaced downward, and the guide roller 36. Is rotated, the on-off valve 32 is also rotated and opened. For this reason, if the sirocco fan 20 receives wind and rotates, the air in the greenhouse 1 is positively exhausted to the outside through the duct portion 30.

But even if the temperature in the greenhouse 1 becomes 25 degreeC or more, for example, and the on-off valve 32 will be in an open state, if it is the house ventilation system 100 for forced cultivation in which the auxiliary unit 10 is not provided, it will not receive a wind. In this case, since the sirocco fan 20 is not rotating, the air in the greenhouse 1 is not actively exhausted to the outside through the duct portion 30.

On the other hand, in this embodiment, since the auxiliary unit 10 is provided, when the temperature in the greenhouse 1 becomes 25 ° C. or more and the on-off valve 32 is opened, the sirocco fan 20 is Even in a state where no wind is received, the DC motor 15 is driven by the power generated by the solar panel 13 and the roller 17 rotates, so that the sirocco fan 20 can be rotated through the top plate portion 21. The air in the greenhouse 1 can be positively exhausted to the outside through the duct portion 30.

In addition, a 4.7 F, 5.5 V capacitor, for example, is provided between the solar panel 13 and the DC motor 15, and a diode for preventing a current from flowing backward toward the solar panel 13 is provided. It is also possible to store electric power used when sunlight is blocked. In this way, for example, although the inside of the greenhouse 1 is warmed in the morning, the DC motor 15 can be driven even on a windless day when the sunlight is hidden in the afternoon.

In addition, in order not to waste the electric power stored in the capacitor, a switch that is turned on / off by opening / closing the opening / closing valve 32 is provided between the DC motor 15 and the capacitor, and only when the opening / closing valve 32 is opened. The switch may be turned on to connect the DC motor 15 and the capacitor.

Thereafter, when the temperature in the greenhouse 1 is lowered to, for example, less than 25 ° C., the on-off valve 32 shifts to a closed state by an operation reverse to that in the open state. That is, since the spring 38 contracts due to the temperature drop, the adjusting portion 39 returns upward, and the weight of the weight portion 34 causes the opening / closing valve 32 to move to the closed state. It is wound up and displaced upward.

As described above, the forcing cultivation house ventilation system 100 of the present embodiment can sufficiently ventilate the inside of the forcing cultivation house even in an almost windless environment.

5 and 6 are diagrams showing a modification of FIG. 1 and another modification of FIG. 1, respectively. 5 (a) and 5 (b) are external views in which one is viewed from the front and the other is viewed from the lateral direction, and both are partially cut away. Although the house ventilation system 100 for forced cultivation shown in FIG. 1 showed the example which has arrange | positioned the roller 17 etc. to the upper surface of the top-plate part 21 of the sirocco fan 20, it shows to Fig.5 (a) and FIG.5 (b). Thus, it may be arranged so as to be in contact with the lower surface of the top plate portion 21, or may be arranged so as to be in contact with the inside of the wing portion 22, as shown in FIG.

In both cases of FIGS. 5 and 6, the transmission line 14 is passed through the pipe-shaped shaft portion 23. In the example shown in FIG. 5, when the center of the seesaw portion 19 can be rotated, the weight 16 is slightly heavier than the DC motor 15, contrary to the example shown in FIG. 3. Good. In the example shown in FIG. 6, a contact between the roller 17 and the wing part 22 may be realized by using a spring (not shown) instead of the weight part 16.

It is sectional drawing which shows the typical structure of the house ventilation system 100 for forced cultivation of embodiment of this invention. FIG. 2 is an external view in which FIG. 1 is partially cut away when viewed from the lateral direction. 4 is a detailed explanatory diagram of the auxiliary unit 10. FIG. It is a bottom view of the sirocco fan 20 shown in FIG. It is a figure which shows the modification of FIG. It is a figure which shows another modification of FIG.

DESCRIPTION OF SYMBOLS 10 Auxiliary unit 20 Sirocco fan 30 Duct part 50 Ventilator 100 House ventilation system for forcing cultivation

Claims

A ventilating device having a cylindrical shape, comprising an on-off valve that opens and closes when the temperature in the forcing cultivation house exceeds a predetermined value, and a sirocco fan that rotates by receiving the wind around the forcing cultivation house An auxiliary unit for assisting ventilation by the ventilation device,
Solar panels,
A DC motor driven by the power generated by the solar panel;
A roller having a shaft connected to a motor shaft of the DC motor and rotating the sirocco fan;
Auxiliary unit comprising.
The ventilator is
The auxiliary unit according to claim 1, wherein an axial center of a duct part in which the on-off valve is provided in a cylinder and the sirocco fan adjacent to the duct part are aligned.
The sirocco fan is provided with a plurality of wings extending in a direction along the axis of the ventilator main body on a side surface and a top plate in a direction orthogonal to the axis, and the solar panel is The auxiliary unit according to claim 1, wherein the auxiliary unit is attached to the top plate portion.
The auxiliary unit according to claim 1, wherein the ventilation device is disposed in an opening formed in the forcing cultivation house so that the sirocco fan is located outside the forcing cultivation house.
An auxiliary unit according to claim 1;
A house ventilation system for forced cultivation, comprising: a ventilation device to which the auxiliary unit is attached.