AIR DRYER FOR A BRAKE SYSTEM

摘要

An air dryer includes a housing with an air inlet, an air outlet and a liquid
drain outlet; and a
membrane separator having surfaces extending between a first and second ends
of the membrane. A
first passage in the housing is connected to the air inlet and air outlet at
it respective ends and extends
between the first and second ends of the membrane separator along the surfaces
of the membrane
separator. A second passage in the housing is connected to the drain outlet
and air outlet at it
respective ends and extends between the first and second ends of the membrane
along a surface of the
membrane separator. A valve is connected between the second passage and the
drain outlet for
controlling the draining of the liquid and sweep air flow through the second
passage. The dryer is to be
inserted in a reservoir at its inlet or outlet. A coalescing filter may be
provided in the housing in series
with the membrane separator and the housing would include a second drain for
the coalescing filter.