Filter with housing

Details Filter with housing Filter with housing

1999-09-23

2000-12-19

Simmons, David A.

Gas separation

Combined or convertible

In motor vehicle

55493, 55502, 55506, B01D 4600

Patent

active

061622710

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

The invention relates to a filter with housing comprising a filter element in the form of a round cartridge, a housing with a raw air inlet and a clean air outlet, and a housing lid, in which the clean air outlet is provided with a connecting piece on which the filter element is arranged.
EP 317 417 A2 discloses a filter with housing in which a filter cartridge is clamped in a housing and can be fixed by means of a cam and a spring element. In order to fix the filter cartridge reliably in the housing, high restraining forces are necessary. These are produced by means of appropriate mounting elements.
The filter cartridge is sealed off axially. This means that a certain compensation for tolerance is necessary since a filter cartridge exhibits particular length tolerances. Likewise, additional mechanical elements are necessary for this tolerance compensation.


SUMMARY OF THE INVENTION

The object of the invention is to provide a filter with housing which can be manufactured with a low expenditure in construction components; which does not require any elements compensating for tolerance, and which avoids the disadvantages noted above.
This object is achieved by the invention as described hereinafter.
The significant advantage of the invention lies in that the construction in accordance with the invention leads to reliable support of the filter element, both in the area of the connecting piece as well as on the opposite side. Several possibilities exist for fastening the filter element on the opposite side. For one, it is possible to support the filter in the peripheral area at the housing wall. Another possibility, as described in another embodiment of the invention, is to provide an axial stop for the filter element, which directly or indirectly fixes the axial position of the filter element. This axial stop can be constructed as a manually actuatable sliding element, or a hinge or a flap, by means of which the support on the housing ensues. In a sliding clement, the guidance of the filter element occurs by means of appropriate guiding surfaces or, in accordance with further development, through an axial opening of the filter element into which a guiding support of the sliding element engages. So that the position of the sliding element is defined within a certain area, the sliding element can be fitted with a detent projection which forms a stop on the housing in accordance with another embodiment of the invention.
It is necessary to assure that operation of the internal combustion engine without the filter is prevented, especially when the filter is used for the intake air of an internal combustion engine. This can be achieved in accordance with one embodiment of the invention, in that a blocking element is provided on the sliding element which prevents closure of the housing lid if no filter element or an improperly installed filter element is present. Only when the filter element is properly installed, can the lid be closed correctly, such that with a closed lid it is assured that a filter element is installed properly and thus the intake air will be guided through the filter element.
In accordance with further embodiment, it is proposed to provide the filter element with a support body and to effect the seal on the clean air side by means of the support body. The support body has the advantage that especially high differential pressures can be absorbed effectively. This support body can, for example, have a gasket in the form of an O-ring gasket, which effects the sealing between the raw air chamber and the clean air chamber.
These and further characteristics of preferred embodiments of the invention are found not only in the claims, but also appear from the specification and the drawings, whereby the individual features can each be realized individually or together in various subcombinations in embodiments of the invention and in other fields, and may represent advantageous embodiments which are themselves worthy of protection and for which protection is claimed here:


BR

REFERENCES:
patent: 2962121 (1960-11-01), Wilber
patent: 4632681 (1986-12-01), Brunner
patent: 4925469 (1990-05-01), Clement et al.
patent: 5062875 (1991-11-01), Nagashima
patent: 5213596 (1993-05-01), Kume et al.
patent: 5304300 (1994-04-01), Parsons
patent: 5746796 (1998-05-01), Ambs et al.
patent: 6001145 (1999-12-01), Hammes et al.

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