JPH0248762Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to an attic ventilation unit in a house.

[Conventional technology]

This type of ventilation unit includes one in which multiple immovable louvers are installed vertically and vertically at equal intervals on the ventilation frame, tilted in the width direction, and one in which the ventilation frame has punched metal or perforated louvers. Commonly used materials include perforated sheet materials such as boards and wire mesh.

These conventional louvers are designed to provide natural ventilation at all times by using gaps between adjacent stationary louvers that are always open and holes in the perforated sheet material as air passages.

[Problem that the invention attempts to solve]

As mentioned above, all of the conventional types have air passages that are always open, so especially when the temperature of the outside air drops significantly, condensation may form in the attic or the heating efficiency of the rooms below the attic may decrease. This is causing problems such as a decrease in energy consumption.

[Means for solving problems]

According to this idea, the above problem can be solved by adding
A plurality of immovable louvers are arranged side by side vertically at intervals in a state of tilting forward in the width direction, and one side edge in the width direction of each of the plurality of movable louvers is attached to the back of each immovable louver. The middle part of the louver in the width direction abuts the upper edge of the adjacent immovable louver on the lower side, and is pivoted so as to releasably close the gap between the adjacent immovable louvers, and furthermore, one end is attached to the ventilation opening frame. A rod to which a shape memory alloy coil spring is attached is arranged so as to extend up and down the rear part of the movable louver by fixing the outer end of the coil spring to the lower part of the ventilation hole frame, and a rod is attached to the rod so as to extend up and down. At intervals, on the lower surface of the other side in the width direction of each movable louver, a louver receiver (louver hit) is provided to pivotably engage the movable louver when the rod moves relative in the axial direction. , solved by an attic ventilation unit.

[Effect]

In the ventilation port unit according to this invention, the temperature of the ventilation port in the attic is the characteristic deformation temperature of the shape memory alloy forming the coil spring (for example, 30 to 40°C).
When the movable louver exceeds the height, the coil spring expands, and the upward movement of the rod in conjunction with this causes each movable louver to pivot upward via the louver receiver attached to the rod, and the middle part in the width direction of each movable louver moves upward. Away from the upper edge of the immovable louvers, gaps between adjacent immovable louvers are opened to provide natural ventilation.

On the other hand, in such a state of natural ventilation, if the temperature of the attic ventilation opening falls below the above-mentioned specific deformation temperature, the coil spring contracts, and the louver holder moves downward due to the associated lowering of the rod. Concomitantly, each movable louver pivots downward and its widthwise intermediate portion abuts the upper edge of each stationary louver, thereby closing the gap between adjacent stationary louvers and blocking natural ventilation.

〔Example〕

This invention, for example, as shown in the drawings, includes side frames 12 and both inclined upper frames 14 of a pentagonal ventilation opening frame 10.
Both ends of each immovable louver 20 are fixed so as to extend horizontally in a front-down inclined state in the width direction, and each immovable louver 2
0, one side edge in the width direction (front edge) of each movable louver 22 is moved toward and away from the upper edge of the immovable louver 20 adjacent to the widthwise middle part of the movable louver 22 on the lower side. Furthermore, a rod 24 with a shape memory alloy coil spring 26 attached to one end is attached to the rear of the lower frame 16 of the ventilation opening frame 10 in the longitudinal direction via the outer end of the coil spring 26. At the same time, the other end (upper end) of the rod 24 is supported movably in the axial direction at the lateral center of the upper part of the ventilation opening frame 10, that is, at the rear of the joint between both inclined upper frames 14. A support guide 28 is arranged at the front part of the rod 24 at an interval in the axial direction, and the lower surface of the other side edge (rear side edge) in the width direction at the center in the length direction of each movable louver 22 is engaged. This can be implemented by providing matching notched louvers 30.

In this illustrated example, the coil spring 26 expands or contracts when the temperature of the attic ventilation opening rises above a predetermined value or falls below a predetermined value, thereby accompanying the upward or downward movement of the rod 24. Through the raising or lowering of the louver supports 30 and the upward or downward pivoting of the movable louvers 22, the air passage defined by the adjacent stationary louvers 20 is opened or closed, allowing natural ventilation or its A cutoff takes place.

[Effect of idea]

As is clear from the above, the ventilation port unit according to this invention can cope with temperature changes in the attic by using a coil spring whose expansion temperature characteristics match the temperature changes in the attic. Accordingly, the ventilation path defined by the adjacent immovable louver can be opened and closed appropriately so that inconveniences such as condensation in the attic and reduction in heating efficiency in rooms below the attic do not occur.

[Brief explanation of drawings]

The drawings show an outline of the configuration of an embodiment of the ventilation port unit according to the invention, and FIG. 1 is a partially cutaway front view, and FIG. 2 is a partially enlarged schematic side view. 10...Ventilation frame, 12...Side frame, 14...Slanted upper frame, 16...Lower frame, 20...Imovable louver,
22...movable louver, 24...rod, 26...
...Coil spring, 30...Louver holder.

Claims (1)

[Scope of utility model registration request] A plurality of immovable louvers are installed vertically and vertically at intervals on the ventilation opening frame in a horizontally downward inclined state, and one side edge of each of the plurality of movable louvers in the width direction is installed on the back of each immovable louver. The movable louvers are pivoted so that the widthwise middle part of each movable louver abuts the upper edge of the adjacent fixed louver on the lower side, releasably closing the gap between the adjacent fixed louvers, and further provides ventilation. A rod having a shape memory alloy coil spring attached to one end is arranged in the opening frame so as to extend vertically over the rear part of the movable louver by fixing the outer end of the coil spring to the lower part of the ventilation opening frame. A louver receiver is provided on the lower surface of the other side in the width direction of each movable louver at a vertical interval on the rod, and engages the movable louver in a pivotable manner when the rod moves relative to each other in the axial direction. Attic ventilation unit.