GB2076526A

GB2076526A - Aeration and ventilation arrangement for an enclosed space

Info

Publication number: GB2076526A
Application number: GB8103187A
Authority: GB
Original assignee: J Eberspaecher GmbH and Co KG
Current assignee: Eberspaecher Climate Control Systems GmbH and Co KG
Priority date: 1980-03-15
Filing date: 1981-02-02
Publication date: 1981-12-02
Also published as: ATA617980A; FR2478275A1; FR2478275B1; DE3010071A1; GB2076526B; DE3010071C2; AT388607B; CH651913B

Abstract

An aeration and ventilation arrangement for an enclosed space comprises a housing containing a motor-driven fan 2 and having a first opening (not shown) arranged to communicate with the interior of the enclosed space and a second opening 11 arranged to communicate with the exterior of the enclosed space when the housing is mounted on or adjacent to a wall of the enclosed space. A partition 3 is detachably secured within the housing in a first position, Fig. 1b, in which the fan impels air from the first opening to the second opening 11 and can be displaced and detachably secured in a second position, Fig. 1a, within the housing so that the fan impels air from the second opening 11 to the first opening. The fan 2 is detachably mounted on the partition 3 and a sound attenuating unit (not shown) is mounted between the first opening and the fan. <IMAGE>

Description

SPECIFICATION Aeration and ventilation arrangement for an enclosed space This invention relates to an aeration and ventilation arrangement for an enclosed space such as a room, which consists of a housing or wall unit containing a motor-driven fan and having an opening directed to the outside of the enclosed space and an opening directed to the interior of the enclosed space.

When such an arrangement is incorporated in a wall of the enclosed space below or above permanently closed windows or at some other site, it is often desired to change the direction of air flow i.e. from the inside to the outside of the enclosed space or vice versa, and in fact generally to eliminate previously unexpected draught or cross-ventilation phenomena. Also, it is advisable from economic considerations, namely for manufacturing and maintenance reasons, todesign such an aeration and ventilation arrangement so that it can be used both for the introduction and extraction of air.

Known designs of such aeration and ventilation arrangements are costly in this respect.

An object of this invention is to simplify the design of such aeration and ventilation arrangements.

According to the present invention an aeration and ventilation arrangement for an enclosed space comprises a housing containing a motor-driven fan and having an first opening arranged to communicate with the interior of the enclosed space and a second opening arranged to communicate with the exterior of the enclosed space when the housing is mounted on or adjacent to a wall of the enclosed space, and means for controlling the direction of air flow through the housing which is displaceable between a first position in which the fan impels air from the first opening to the second opening and a second position in which the fan impels air from the second opening to the first opening.

In one embodiment of the invention the means for controlling the direction of air flow through the housing includes a partition detachably secured within the housing to provide a path for air impelled by the fan from the first opening to the second opening, and detachably securable in an alternative position within the housing to provide a path for air impelled by the fan from the second opening to the first opening. The motor-driven fan may be mounted on the partition.

The housing may extend longitudinally between the first and second openings and the motordriven fan may be arranged with its rotational axis perpendicular to the longitudinal axis of the housing.

The housing may extend longitudinally between the first and second openings and the motordriven fan may have its rotational axis inclined to the longitudinal axis of the housing.

The above-mentioned embodiment of the invention is advantageous in that the partition together with the motor-driven fan fastened thereto can be designed to be easily reversible in the housing by rotating it through 1 800, so that lugs projecting from the partition engage in holders in diagonally opposite positions on wall of the housing, the motor-driven fan being fastened to the partition by the side opposite to the axial inlet of the said fan.

In another embodiment of the invention the means for controlling the direction of air flow through the housing includes a partition within the housing having two apertures therein, the motordriven fan being detachably secured within the housing adjacent one aperture to provide an airflow path from the first opening to the second opening, and being detachably securable within the housing adjacent the other aperture to provide an air-flow path from the second to the first opening. The motor-driven fan may be detachably secured to the partition.

In a further embodiment of the invention the means for controlling the direction of air flow through the housing includes a partition provided with a plurality of flaps adjustable between a position providing an air flow path from the first opening to the second opening and an alternative position providing an airflow path from the second opening to the first opening.

In this latter embodiment of the invention the fan may be mounted on a wall of the housing adjacent an aperture in the partition and the flaps may be adjustable by means of a rod and lever.

Embodiments of the invention will now be described by way of example, with reference to the accompanying drawings, in which: Figure 1 a is a partial longitudinal section of an aeration and ventilation arrangement according to the invention, with a motor-driven fan arranged perpendicular to the longitudinal axis; Figure 1 b is a partial longitudinal section similar to Figure 1 a but arranged in its alternative mode of operation; Figures 1 c and id are perspective views showing details of a partition shown in Figures laand ib; Figure 2a is a partial longitudinal section of another aeration and ventilation arrangement according to the invention, with a motor driven fan inclined to the longitudinal axis; Figure 2b is a partial longitudinal section similar to Figure 2a but arranged in its alternative mode of operation;; Figure 3a is a partial longitudinal section of a further aeration and ventilation arrangement according to the invention with a displaceably arranged motor-driven fan; Figure 3b is a partial longitudinal section similar to Figure 3a but arranged in its alternative mode of operation; Figure 4a is a partial longitudinal section of yet another aeration and ventilation arrangement according to the invention with adjustable inlet and outlet flaps; Figure 4b is a partial longitudinal section similar to Figure 4a but arranged in its alternative mode of operation; and Figure 4c is a cross section of the aeration and ventilation arrangement shown in Figure 4b.

Referring in the first instance to Figures 1 a, 1 b, Ic, Id, 2a and 2b, the aeration and ventilation arrangements shown comprise a housing 1 having at one end an opening 11 leading to the outside of an enclosed space such as a room in which the arrangements are installed, and at the other end an opening (not shown) leading to the interior of the enclosed space or room through a sound attenuating unit 12. A partition 3 is detachably secured within the housing 1 in the vicinity of the opening 11, i.e. between the latter and the sound attenuating unit 12. A motor-driven fan 2 is secured to the partition 3 by means of a bracket 4.

The fan 2 need not be secured to the partition 3 and may be secured to a wall of the housing 1.

In accordance with the invention the partition can be detachably secured within the housing 1 in two alternative positions, in one of which the fan 2 impels air towards the opening 11 and in the other of which the fan 2 impels air away from the opening 11 as indicated by the arrows.

As shown in Figures 1 a and 1 b, the rotational axis 14 of the motor-driven fan 2 can be perpendicular to the longitudinai axis of the housing 1. Alternatively, as shown in Figures 2a and 2b the rotational 14 axis of the fan 2 may be inclined to the longitudinal axis of the housing 1.

This latter arrangement permits a larger diameter fan to be used and produces better airflow conditions.

An inlet opening 3d constructed like a nozzle in the direction of air flow is formed in each case in a side 3a of the partition 3 which lies parallel to or inclined to the upper wall of the housing 1.

Lugs such as 3a', 3b' and 3c', projecting from the ends of the partition 3 from the detachable connections which engage in holders 5 and 6 secured to the upper and lower walls of the housing 1. The holders 5 and 6 are mounted in such a way that the partition 3 together with the motor-driven fan 2 can be rotated through about 1800. Figures 1 a and 2a show in each case the position of the partition 3 for providing an air flow from the opening 11 towards and into the enclosed space or room and Figures 1 b and 2b show in each case the position of the partition 3 for providing an airflow out of the enclosed space or room towards and out of the opening 11.

In the first case the opening 11 serves to admit fresh air, which is then forced through the sound attenuating unit 1 2 into the enclosed space or room, and in the second case it serves as an exit for stale air, which is extracted from the enclosed space or room through the sound attentuating unit 12.

Referring now to Figures 3a and 3b, the partition 3 has a side 3a parallel to the upper wall of the housing 1 , which side 3a is provided with two adjacent fan inlet openings 3d and 3d' separated by an intervening portion 3c of the partition 3. The other side 3b of the partition 3 separates the fan area from the adjacent sound attenuating unit 1 2. The motor-driven fan 2 is in this case arranged so that it can be detachably secured within the housing 1 in two alternative positions adjacent one inlet opening or the other. For this purpose the motor-driven fan 2 can be mounted on the partition 3 as shown or on the lower wall of the housing 1.Figure 3a illustrates the position in which the fan 2 is located adjacent the inlet opening 3d, while Figure 3b illustrates the alternative position in which the fan 2 is located adjacent the inlet opening 3d'.

Turning finally to Figures 4a to 4c, in this embodiment of the invention the partition 3 is arranged with a fan inlet opening 3d in a side which lies parallel to the upper wall of the housing 1, and the motor-driven fan 2 is arranged with its rotational axis 14 perpendicular to the upper wall.

The motor-driven fan 2 is secured to the lower wall of the housing 1 by means of a bracket 4, which does not form part of the partition 3. The end portions of the partition 3 are provided with associated flaps 7 and 8 which are pivotally mounted thereon and are arranged to be mutually adjustable, by means of a rod 9 and a lever 10, between alte;native open and closed positiOns.

Figure 4a illustrates the position which provides an airflow path between the opening 11 and the enclosed space or room as indicated by the arrows, the flap 7 adjacent to the opening 11 permitting a flow of air from the exterior of the enclosed space to the fan inlet opening 3d, and the flap 8 permitting a flow of air from the fan, through the sound absorber 12, to the enclosed space or room. Figure 4b illustrates the alternative position of the flaps 7 and 8 which provides an air flow path from the enclosed space or room to the opening 11 as indicated by the arrows.

As can be seen in Figure 4c the operating mechanism for the flaps 7 and 8 comprises a rod 9 which is coupled to the pivotally mounted rod 9 which is coupled to the pivotally mounted flaps 7 and 8 and is movable by a cranked lever 10. The rod 9 and cranked lever 10 are arranged to move the flaps 7 and 8 simultaneously between the positions shown in Figure 4a and the positions shown in Figure 4b. In this way the direction of air flow through the housing 1 can be changed between the two alternative directions indicated by the arrows in Figures 4a and 4b.

Claims

1. An aeration and ventilation arrangement for an enclosed space comprising a housing containing a motor-driven fan and having an first opening arranged to communicated with the interior of the enclosed space and a second opening arranged to communicate with the exterior of the enclosed space when the housing is mounted on or adjacent to a wall of the enclosed space, and means for controlling the direction of air flow through the housing which is displaceable between a first position in which the fan impels air from the first opening to the second opening and a second position in which the fan impels air from the second opening to the first opening.

2. An arrangement as claimed in Claim 1, wherein the means for controlling the direction of air flow through the housing includes a partition detachably secured within the housing to provide a path for air impelled by the fan from the first opening to the second opening, and detachably securable in an alternative position within the housing to provide a path for air impelled by the fan from the second opening to the first opening.

3. An arrangement as claimed in Claim 2, wherein the motor-driven fan is mounted on the partition.

4. An arrangement as claimed in any preceding claim, wherein the housing extends longitudinally between the first and second openings and the motor-driven fan is arranged with its rotational axis perpendicular to the longitudinal axis of the housing.

5. An arrangement as claimed in any one of Claims 1 to 3, wherein the housing extends longitudinally between the first and second openings and the motor-driven fan has its rotational axis inclined to the longitudinal axis of the housing.

6. An arrangement as claimed in Claim 1, wherein the means for controlling the direction of air flow through the housing includes a partition within the housing having two apertures therein, the motor-driven fan being detachably secured within the housing adjacent one aperture to provide an air-flow path from the first opening to the second opening, and being detachably securable within the housing adjacent the other aperture to provide an air-flow path from the second to the first opening.

7. An arrangement as claimed in Claim 6, wherein the motor-driven fan is detachably secured to the partition.

8. An arrangement as claimed in Claim; 1, wherein the means for controlling the direction of air flow through the housing includes a partition provided with a plurality of flaps adjustable between a position providing an air flow path from the first opening to the second opening and an alternative position providing an air flow path from the second opening to the first opening.

9. An arrangement as claimed in Claim 8, wherein the fan is mounted on a wall of the housing adjacent an aperture in the partition.

10. An arrangement as claimed in Claim 8 or Claim 9, wherein the flaps are adjustable by means of an operating lever.

11. An arrangement as claimed in any preceding claim, having a sound attenuating unit communicating with the first opening.

12. An aeration and ventilation arrangement substantially as hereinbefore described with reference to Figures 1 a to 1 d or 2a and 2b of the accompanying drawings.

1 3. An aeration and ventilation arrangement substantially as hereinbefore described with reference to Figure 3a and 3b of the accompanying drawings.

14. An aeration and ventilation arrangement substantially as hereinbefore described with reference to Figures 4a to 4c of the accompanying drawings.