EP0530019A2
Expired / Lapsed
EP
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Gas Dryers
Assignee: Knorr Bremse Systems for Commercial Vehicles Ltd
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Filing: 1992-08-27
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Granted: —
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Expires: 2012-08-27
Abstract
Abstract A compressed air dryer has a body (1) and a cartridge (8) housing desiccant (10) through which air from a compressor is driven in one direction on its way to a storage reservoir and a purge valve (13, 14) is provided whereby air under compression can be conducted in a reverse direction via the cartridge and an electrical timer controlled metering valve (20) is provided for conducting dry air from a reservoir back to the desiccant for regenerating the desiccant, the timer 31 being initiated by operation of a pressure switch responsive to a signal which sets the compressor off load. <IMAGE>
Inventors
- 👤 Patrick Ronald Oliver
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 20:31
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D53/261; B60; B60T; B60T17/00; B60T17/002; B60T17/004
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
125 words
A gas dryer comprising a body (1) carrying a chamber (8) containing desiccant material (10) said chamber having an inflow passage (28) and a one-way outflow passage (11,12) communicating respectively with inlet (2) and delivery (11) passages of the body and a purge valve (13, 14) operable in response to a signal indicative of attainment of a predetermined delivered pressure to connect said inflow passage (28) to a vent port (4), characterised in that a pressure signal responsive electric switch (24) is operable by said pressure signal to initiate an electric timer device (31) controlling energisation of an electrically operable valve (20) for permitting restricted gas flow from said delivery port (3) via said desiccant (10) said inflow passage (28) and said vent port (4).
Claim 2
Dependent Claim
38 words
A gas dryer as claimed in claim 1, characterised in that said purge valve (13, 14, 16) is a pressure signal responsive valve and said signal indicative of attainment of a predetermined delivered pressure is a pressure signal.
Claim 3
Dependent Claim
44 words
A gas dryer as claimed in claim 1 or claim 2, characterised in that said electrically operable valve (20) is a solenoid valve and including an electrical relay (32) responsive to said timer for applying energising current to the solenoid of the solenoid valve.
Claim 4
Dependent Claim
31 words
A gas dryer as claimed in claim 1, 2 or 3 said electric switch being included in circuits to said timer and a supply circuit to an electronic circuit board (32).
Claim 5
Dependent Claim
36 words
A gas dryer as claimed in claim 3, characterised in that said solenoid of the solenoid valve, said relay (31) and said timer are included in a discrete module housed in a recess of said body.
References Cited (Backward Citations)
No citation records indexed.
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