JPS5834099Y2 - Insulation material supply device to greenhouse - Google Patents

Description

[Detailed explanation of the invention] This invention has translucent inner and outer walls, and at night, a heat insulating material is placed in the middle of the inner and outer walls by placing it on the airflow to insulate the room, preventing a drop in room temperature, and during the day, insulating it. The present invention relates to an apparatus for supplying insulation material in a greenhouse, which also has the function of discharging the material from the inner and outer walls by means of an air flow to allow light to pass through.

Figures 1 and 2 are diagrams explaining the basic function of filling the greenhouse.

1 is a blower, 2 is a tank containing a small piece of insulation material 3,
4 is a pipe (ejector) that sucks the small piece of insulation material 3 from the tank 2, and 5 is a pipe duct 6 built in the ridge of the greenhouse.
Leads to.

7 is the outer wall of the greenhouse, and 8 is the inner wall of the greenhouse.

Reference numeral 9 denotes a net that does not allow the small piece of heat insulating material 3 to come out of the duct and allows only air to pass through.

The filling function will now be explained.

First, the wind force generated by operating the blower 1 flows as shown by the solid arrow.

First, it enters the ejector 4, where it generates negative pressure, sucks in the small piece of insulation material 3 from the tank 2, and places it on the air flow.

The flow of these insulation pieces is shown by dotted lines.

Since the pipe 5 is thin and has a small cross-sectional area, the wind speed inside is high and the small piece of insulation material 3 is easily blown up from the lower part to the ridge.

When the air is blown up to the height of the ridge, there is a duct 6.
Air and insulation strips 3 are pumped into it.

Since the duct 6 has a larger cross-sectional area than the pipe 5, the wind speed passing through it is slower than that of the pipe 5.

When the wind speed decreases, the heat insulating material pieces 3 separate from the air flow and fall to the lower part of the duct 6 due to gravity.

The fallen heat insulating material pieces 3 sequentially fall and accumulate due to gravity between the inner and outer walls 7 and 80 of the greenhouse which are open to the duct 6, and become buried.

When the small piece of heat insulating material 3 completely covers the inner and outer walls 7 and 8 of the greenhouse, the greenhouse is completely isolated from the outside air by the heat insulating material, improving the heat retention effect.

The above is the filling function of this greenhouse, but there are three problems here.

Problem 1 If the cross-sectional area of duct 6 is uniform vertically, then walls 1 and 8 of the greenhouse
The opening in contact with the duct 6 between them is large, and the wind speed of the duct 6 affects the space between the upper walls.

For example, if small pieces of insulation material have already been filled between these walls, they will fly up into the duct 6 due to the wind speed,
It gets stuck and creates a gap.

In other words, it is not possible to completely cover the greenhouse with small pieces of insulation material.

Problem 2 Unless the wind speed in duct 6 is above a certain value, it will not be possible to carry the small piece of insulation material to the edge of the greenhouse.

In order to increase this wind speed, in the system shown in Figure 1, pipe 5
The aim is to increase the amount of air passing through.

On the other hand, the wind speed inside this pipe 5 is originally a small value because it blows up the small piece of insulation material from the bottom to the top.

For this reason and for economy, the pipe 5 has a smaller cross section than the duct 6.

Therefore, increasing the air volume of the pipe 5 will greatly increase the wind speed and increase the pressure loss, which will result in a sudden increase in the power required for the blower 1, which will be uneconomical.

Problem 3: If the ridge of the greenhouse is long, if the wind speed inside duct 6 is too weak, the small pieces of insulation will not be able to reach the edges.

On the other hand, if it is made too strong, the heat insulating material pieces 3 will be blown onto the net 9, blocking the net surface and impeding air circulation.

As a result, the amount of air blown by the blower 1 is reduced, and the heat insulating material piece 3 is no longer pulled out from the tank 2.

In other words, the filling function is significantly degraded.

The main purpose of the present invention is to solve problem 1 among the above-mentioned problems.

An embodiment of the present invention will be described below.

First, we will discuss improvements regarding problem 1.

FIG. 3 shows a cross section of the duct, and 10 and 11 are a duct portion with a wide cross-sectional area and a duct portion with a narrow cross-sectional area, which constitute a duct corresponding to the duct 6 in FIG. 1.2.

The heat insulating material 3 sent to the duct 6 configured in this manner falls and accumulates in the middle of the greenhouse wall surfaces γ, 8 and in the narrow cross-sectional area duct portion 11.

Here, even if the wind continues to pass through the wide-area duct section 10, the small pieces of heat insulating material 3 that are dragged up by the wind are only those that have accumulated in the narrow-area duct section 11 that is in contact with the wide-area duct section 10. The insulation material 3 between the greenhouse walls 1 and 8 does not move.

Insulating the inside and outside of the greenhouse involves only the 1°8 space between the inside and outside walls of the greenhouse, and not the narrow section duct portion 11.

Therefore, by adopting the structure shown in FIG. 3, problem 1 mentioned above can be solved.

Next, we will discuss improvements regarding problem 2.

To solve this problem, the amount of air that is insufficient to be supplied from the pipe 5 alone with respect to the amount of air needed to obtain the required wind speed in the duct 6 may be supplied to the duct 6 without passing through the pipe 5.

FIG. 4 is a cross-sectional view, and in principle, an air supply port 6a is provided at one end of the duct 6 shown in FIG. 1, and a fan 13 is provided corresponding to this air supply port 6a. is supplied to the duct 6.

Since the air volume is supplied to the duct 6 without passing through the pipe 5, the pressure of the fan 13 is only the pressure that passes through the duct 6, and the above problem can be solved with low pressure and low power.

In addition, in FIG. 4, the net 14 is provided before or after the fan 13, so that even if the fan 13 is stopped, the pipe 5
It is also shown as a feature that small pieces of insulation material transported through the fan 13 are prevented from scattering outside the greenhouse through the gap of the fan 13.

Furthermore, we will discuss improvements regarding problem 3.

FIG. 5 shows an improvement of the portion corresponding to the net 9 in FIG.

The symbols in FIG. 1 and 4 indicate the same or corresponding parts. The solid and dotted arrow lines indicate the flow of air and the heat insulating material piece 3, respectively, as in FIG.

In the case shown in FIG. 5, the screen 15 corresponds to the screen 9 in FIG. 1, and is installed diagonally inside the duct 6 as shown.

By doing this, even if the small pieces of insulation material are blown onto the net, they will not accumulate and will fall downward due to the force of gravity or wind power along the slope of the net.

This solves the problem mentioned earlier.

Note that by making the net 15 diagonal, the duct 6 and the net 150 can be
Another feature is that a triangular space is created in between, in which birds may nest, so the end of the duct 6 is further covered with a net 16 to prevent it.

As described above, the present invention has the effect of improving the ability to supply new wall material between the inner and outer walls.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the basic functions of this greenhouse, and FIG. 2 is a cross-section taken along line H--■ in FIG. 1, viewed in the direction of the arrow. Figures 3 to 5 are views showing an embodiment of the present invention, in which Figure 3 is a front sectional view of the ridge duct, Figure 4 is a side sectional view of one end of the ridge duct, and Figure 5 is a ridge duct. It is a side sectional view of the other end of a duct. In the figure, 8 is an inner wall, 7 is an outer wall, 3 is a heat insulating material, 6 is a duct, 10 is a bottom section duct section, 11 is a narrow section duct section,
6a is an air supply port, and 14, 15, and 16 are nets. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] A heat insulating material supply device for a greenhouse, in which a roof is constituted by translucent inner and outer walls arranged at a predetermined interval, and a duct for filling insulating material between the inner and outer walls is provided continuously on a ridge of the roof. A heat insulating material supply device for a greenhouse, characterized in that the cross section of the duct in the vertical direction is narrower at the bottom than at the top.