JP4711500B2 - Room ventilation system air intake grid - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is directed to an air intake grid for a room ventilator.
[0002]
[Prior art]
In order to keep the room in good hygiene, in particular, in order to avoid excessive moisture that damages structural materials and furniture, indoor ventilation is usually performed from the idea of replacing room air.
[0003]
Ventilation of rooms, such as residential or commercial rooms, is often done with the aid of mechanically controlled ventilation, including ventilators that ventilate in technical rooms such as sanitary rooms or kitchens. Extraction in a typical room is compensated by accepting air into the reservoir. This reception of air takes place from an air inlet mounted in a window frame for a recently devised room. For older rooms that do without a ventilation system, it is appropriate to receive air by other means. One solution consists of providing a hole between the room and the outside to form an air intake duct. This duct is provided inside the room as a device called an air intake, in which the cross section of the passage can be varied, in particular as a function of the pressure difference inside and outside the room, the room humidity, the temperature and other functions. In such cases, it is known to install eaves with lattices intended to avoid the passage of mosquitoes and other insects at the end of the duct facing outward. This grid, flat and perpendicular to the duct, is fixed facing the outside of the building. Considering the pressure loss toward the inside of the room and the circulation of air that passes through the grid from the outside to the inside of the room, the grid is rapidly clogged due to environmental pollution, especially in urban environments. Quite obvious. If the grid is on the first floor, you can approach it. If the grid is on the second floor or higher, you cannot access it, unless it is at the balcony level. As a result, in many cases, the grid cannot be removed for cleaning purposes, and it is quite inadequate to accept air into the room.
[0004]
[Problems to be Solved by the Invention]
It is an object of the present invention to provide a grid that can be maintained in such an air intake facility in an effective and rapid manner.
[0005]
[Means for Solving the Problems]
As a result, the grid according to the present invention adapted to be installed inside the duct needs to be an at least partially elastically deformable circular body having an outer diameter that matches the inner diameter of the duct, and the circular body Has a perforated portion that forms a lattice, and has a handle that extends toward the inside of the room.
[0006]
Given its structure, the grid can be fitted into the air intake duct from the inside of the room after the air intake is pulled out. The lattice is fixed on the inner surface of the duct using an elastic deformation zone of a circular body so that it is firmly supported against the inner surface of the duct. When the grid is clogged, the operator removes the air intake, which is very easily done. In this case, it can be taken directly out of the duct by approaching the grid directly and using the handle to slide the grid towards the inside of the room. Once the grid is removed, it can be cleaned and then returned to its original state in the reverse procedure.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
According to one embodiment of this grid, the circular body has legs that are elastically deformable in the radial direction. Even if the circular body cannot be deformed or hardly deformed, it can be fixed to the inside of the duct by an elastic leg.
[0008]
According to one embodiment of this grid, the perforated portions forming the grid include a single rotating surface that converges in an inclined manner from the outside to the inside, or several planes or curved surfaces, The end of is directed towards the interior of the room and has a handle. This general shape of the grid makes it possible to increase the surface of the perforated part for the case where the perforated part is perpendicular to the duct axis. This results in a reduction in pressure loss and a limit on the number of interferences because a grid with a filter perpendicular to the duct axis will clog more slowly.
[0009]
According to an embodiment in the latter case, the grating comprises perforated portions forming a grating consisting of two converging planes, one of the two faces towards the circular body and the other in the longitudinal direction. And, at the position of the handle, the two faces are joined to two longitudinal members which are joined together.
[0010]
Conveniently, in the case of such a shape, the grid is made of synthetic material and obtained as a single piece.
[0011]
In any event, the present invention will be more fully understood from the following text which is described with reference to the accompanying drawings, which illustrate this grid embodiment as a non-limiting example.
[0012]
The grid 2 of the present invention, shown in detail in FIG. 1, is destined to be combined with an air intake in the interior 1 of the room isolated from the exterior E by a wall 3. In the wall 3, a duct 4 that communicates the interior 1 and the exterior E of the room is provided. Inside the room, an air intake 5 is provided in front of the duct 4. The lattice 2 is destined to be housed inside the duct 4 from the outer end side of the duct 4.
[0013]
The illustrated lattice is made of a synthetic material and is obtained by molding as a single piece. The grid includes a body having a circular body 6 with an outer diameter coinciding with the inner diameter of the duct 4. At the level of this circular body 6, two elastic legs 7 are provided at symmetrical positions on the circumference, separated from the main body by two axial fissures and directed slightly outward with respect to the circular body 6. The circular body 6 is connected to two longitudinal members 8 having a curved surface with a symmetrical axis and extending forward. Two perforated surfaces 9 forming a lattice are attached between the circular body 6 and the two longitudinal members 8. The two perforated surfaces converge from the side facing the circular body 6 and are joined at the front end of the longitudinal member 8. In front of the two perforated surfaces forming the grid, the longitudinal member 8 is joined to a single plate 10 having a central hole 12 forming a handle.
[0014]
As shown in FIGS. 2 and 3, the grid 2 is arranged inside the duct so that the circular body 6 is located near the outer end of the duct 4 and the handle 10 is located in the duct that leads to the interior 1 of the room. Is provided.
[0015]
Therefore, after the removal of the air inlet 5, the attachment and removal of the lattice is performed by simple elastic friction and the operation of the lattice is performed by operating the handle 10 by hand. It can be done very easily without using. As a result, the grid is periodically cleaned and can be removed very easily. In addition, and as is apparent from the drawings, the shape of the grid allows the perforated surface to increase with respect to the case where the perforated surface is perpendicular to the axis of the duct, which on the one hand limits the pressure loss, On the other hand, the period until the next cleaning of the grid can be lengthened.
[0016]
Needless to say, the invention is not limited to this lattice embodiment described above by way of example, but rather encompasses all of the variations. In particular, the shape of the perforated surface can be considered in various ways, but it can be attributed to the only one that is conical or perpendicular to the duct axis without going beyond the scope of the invention.
[Brief description of the drawings]
FIG. 1 is a perspective view of a product of the present invention.
FIG. 2 is a longitudinal sectional view showing a position attached to the inside of an indoor air intake duct.
FIG. 3 is a cross-sectional view taken along line III-III in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Interior 2 ... Grid 3 ... Wall 4 ... Duct 5 ... Air intake 6 ... Circular body 7 ... Elastic leg 8 ... Longitudinal member 9 ... Perforated surface
10 ... Plate

Claims (5)

Penetrates the wall (3), the interior (I) of one end room, the other end is performed intake air through the duct (4) leading to the outside (E), one end of the duct (4) air intake are located towards the inside of the wall with the inlet (5), the air intake needful grid ventilator room,
The grid is attached to the inside of said duct (4) has an including body a circular portion (6) can be at least partially elastically deformed, the outer diameter of the circular body (6) duct (4) lattice inner diameter to match the body, perforated surface to form a grating with a (9), and which is characterized in that it extends to the other side on the inside of the room which is attached a handle (10) of. The grid according to claim 1, characterized in that the circular part (6) of the body includes legs (7) that are elastically deformable in the radial direction. Said body, wherein the perforated surface (9) forming the lattice comprises one inclined surface converging from the outside to the inside, or several planes or curved surfaces , directed towards the interior (I) of the room grid according to claim 1 or 2, characterized in that it comprises a handle (10) to the end. Lattice, includes a perforated surface to form a grid of two planes (9) to converge, said in two planes one being coupled to said circular portion (6), moreover handle extends longitudinally in the other The grid according to claim 3, characterized in that at the position (10) the two planes are joined to two longitudinal members (8) of the body which are joined together. Grating made of synthetic material, the lattice according to any one of claims 1 to 4, characterized in that it is obtained by molding in one piece.

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