Filter assembly having a filter element and a sealing device

Details Filter assembly having a filter element and a sealing device Filter assembly having a filter element and a sealing device

B - Operations, Transporting

01

D

B01D 46/24 (2006.01) B01D 29/33 (2006.01) B01D 39/20 (2006.01)

Patent

CA 2109536

ABSTRACT: The present invention provides a filter assembly including a sealing device having first and second surfaces. A filter element has a first surface disposed about the first surface of the sealing device. The filter element has a second surfaces disposed adjacent to the second surface of the sealing device. A compressible material is disposed between the first surface of the filter element and the first surface of the sealing device and between the second surface of the filter element and the second surface of the sealing device. The filter element has a coefficient of thermal expansion that differs from the coefficient of thermal expansion of the sealing device. The compressible material is compressed between the second surfaces at a first predetermined temperature. The differing coefficients of thermal expansion combine with an increase in temperature of the filter assembly to a second predetermined temperature, higher than the first predetermined temperature, to compress the compressible material between the first surfaces. Thus a effective seal is formed at both the first and second predetermined temperatures.

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