JPS5923496Y2 - Agricultural shutter shutter opening closing device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a shutter opening closing device for agricultural shutters, and more specifically, for example, when a ventilation fan installed in a vinyl house is activated, the inside of the house becomes under negative pressure with respect to the atmosphere. When the shutter plate pivots to the shutter opening, it automatically opens upwards, and the intake-side agricultural shutter introduces outside air through the opening. This invention relates to a device for closing the opening of an agricultural shutter on the exhaust side for forced ventilation of humid air.

In greenhouse cultivation, which has been gaining popularity in recent years, an important issue is how to efficiently maintain and manage the heating and cooling in the greenhouse due to the limited availability of petroleum resources and rising prices.

Especially in greenhouse cultivation where the purpose is to utilize solar energy, it is important to take full advantage of the energy obtained during the day by bringing it in at night instead of wasting it.
For this purpose, it is desirable that the entire house be airtight.

Furthermore, even when relying on a heat source such as petroleum resources, the entire house must be airtight in order to improve its thermal efficiency.

However, in the agricultural shutter described above, a shutter plate that can be opened and closed is pivotally attached to the opening thereof, and when the shutter plate is closed, the opening is temporarily shielded.

However, the airtightness of the shutter plate itself is still insufficient, and heat escapes through the gap between the shutter plates, reducing heating efficiency at night.

This is especially noticeable when there is a strong wind outside.

This is because the shutter plate flutters in the outside air, which further deteriorates the airtightness and increases the loss of heat.

For this reason, some devices employ a locking mechanism for the shutter plate itself.

However, if the shutter plate itself is closed, the sealing of the shutter plate itself is not sufficient, so the airtightness of the opening cannot be said to be good, and the above problem cannot be solved, and this mechanism has a complicated structure. There are problems in terms of handling and cost.

In view of the above, the present invention has a very simple structure and is easy to handle.
An object of the present invention is to provide a device for closing a shutter opening that is easy to install.

Embodiments of the present invention will be explained in detail based on the drawings.

In Figure 1, 1 is a roughly box-shaped shutter hood;
is an opening provided at the lower end.

A shutter plate 1-3 is pivotally mounted to this opening 2.

A hinge 4 is provided on one side of the hood edge 1a on the side of the opening portion 2, and a shielding plate 5 for closing the opening 2 is attached to the hinge 4.

Further, a magnet and a clamping tool (in this case, an engaging element is provided on the shielding plate 5) on the other side of the hood edge 1a.

), etc., are provided to control opening and closing of the shielding plate 5.

Reference numeral 7 denotes a hook ring for an operating rod provided at the tip of the lower surface of the shielding plate 5.

Next, in FIG. 2, the shutter hood 1 is box-shaped;
An opening 2 is provided in the front direction thereof, and a plurality of shutter plates 3 are pivotally attached to this opening 2.

The rest of the structure is the same as that in FIG.

In the figure, 8 is a house frame, and 9 is a ventilation fan.

Note that a ventilation hole is provided on the side of the shutter hood 1 where the house frame 8 is attached.

A shutter plate 3 and a shielding plate 5 are arranged side by side in the opening 2, and when the opening 2 is closed, a double structure is formed.

As explained in detail above, the present invention has a structure in which the opening 2 of the shutter hood is closed airtightly with a double structure consisting of the shutter plate 3 and the shielding plate 5, so that the airtightness of the opening due to the conventional shutter plate itself is improved. In comparison, the properties of the shutter opening are further improved, and the loss of thermal energy from the opening, especially at night, is significantly reduced, contributing to effective use of heat and energy saving.

In addition, since the opening is double-blocked by the shutter plate and the shielding plate, it is possible to completely prevent the shutter plate from flapping, and even in strong winds outside, the shutter plate can be prevented from flapping and opening. In addition to achieving the same effects as described above, it also prevents the plastic greenhouse itself from flapping, improving the durability of the greenhouse.

In addition, despite the simple structure, once locked, the shielding plate does not open unnecessarily and maintains a completely sealed state, improving its reliability.

Furthermore, since the shield plate has a hook ring, even if this type of shutter is installed above the house frame, it can be easily opened and closed using an operating rod, etc.
It has many effects such as reducing

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing one example of the present invention, and FIG. 2 is a partially cutaway side view showing another example. 1... Shutter hood, 1a... Hood edge, 2... Opening, 3... Shutter plate, 4... Hinge, 5...
Shielding plate, 6... Latching tool, 7... Hanging ring, 8... House frame.

Claims (1)

[Scope of utility model registration request] In an agricultural shutter having a structure in which a shutter plate is pivotally attached to an opening of a shutter hood to close the opening, a shielding plate for closing the opening is provided on one side of the edge of the hood on the opening side. A shutter for an agricultural shutter, which is attached to a hinge and is provided with a shutter plate and a shielding plate that double closes the opening by making the shielding plate detachable from a locking tool provided on the other edge of the hood. Orifice closure device.