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Mechanism for cleaning and drying compressed gases
| Details |
Inventors: Dienes, Larry E.; Knight, David J.; Wurst, William R.;
Assignee: The Bendix Corporation (Southfield, MI)
Primary Examiner: Spitzer; Robert
Assistant Examiner:
Attorney, Agent or Firm: Decker; Ken C., Antonis; W. N.
Mechanism for cleaning and drying compressed gas (10) includes a housing (12) having an open end closed by an end cover (14). A desiccant canister (16) is mounted on a plate (24) which is clamped between the end cover (14) and the housing (12) so that the canister (16) is received within the housing (12). A circuitous passage (78) communicates an inlet port (76) with a sump cavity (68) which is communicated with the canister (16). Heat is transferred from the gas to the walls of the passage (78) as the gas passes therethrough. The passage (78) cants toward the sump (68) so that moisture tends to drain into the latter. A dump valve (110) periodically communicates the sump cavity (68) with atmosphere to thereby regenerate the desiccant in the canister (16) and to void the contaminants from the sump cavity (68). |
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DETAILED DESCRIPTION We claim: 1.
Mechanism for cleaning and drying compressed gasses comprising an open ended housing, a desiccant canister in said housing, and an end cover closing the open end of said housing, said end cover defining a sump cavity therewithin, an inlet port carried by said end cover and communicated with a source of compressed gas, a circuitous passage communicating the inlet port with the sump cavity, said desiccant canister cooperating with said housing to define a gas receiving cavity therebetween, a delivery port carried by said end cover and communicating with said gas receiving cavity, passage means communicating the sump cavity with the desiccant canister, and dump valve means for controlling communication between said sump cavity and a region maintained at a pressure level lower than the pressure level in said sump cavity when compressed gas is communicated to the inlet port, said dump valve means being responsive to a pressure signal for controlling communication between said sump cavity and said region, said circuitous passage being defined by side walls and a bottom wall, said bottom wall canting from said inlet port towards said pump cavity whereby contaminants tend to drain toward said sump cavity, said circuitous passage including segments overlapping one another connected by bends at the ends of said segments.
2.
Mechanism for cleaning and drying compressed gasses as claimed in claim 1, wherein said inlet port communicates with a pocket defined in said end cover, said circuitous passage defining an entrance communicating with said pocket, said entrance being oriented such that gas entering said inlet port is deflected into said entrance.
3.
Mechanism for cleaning and drying compressed gasses as claimed in claim 1, wherein said passage means is oriented with respect to the sump cavity such that gas flowing into the sump cavity from the circuitous passage is deflected into said passage means by the walls of the sump cavity.
4.
Mechanism for cleaning and drying compressed gasses as claimed in claim 1, wherein said region is the ambient atmosphere, said end cover including a channel communicating said sump cavity with ambient atmosphere and a control port communicated to a source of control pressure, said dump valve being responsive to the pressure level at said control port to control communication through said channel
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