Temperature management system for a 2CD type air compressor
AssigneeWabtec Holding Corp.
InventorJeffrey J. Hritz
Life of this patent
Estimating the term…
Abstract
A temperature management system for an air compressor includes a plurality of cooling fans coupled to an intercooler of the air compressor; an electrical relay comprising a coil and contacts operated by the coil; and a temperature switch coupled to the coil of the electrical relay. The contacts are located between the cooling fans and an electrical power supply. The temperature switch opens at a temperature above a predetermined temperature at a high pressure inlet of a high pressure stage of the air compressor, thereby closing the contacts of the electrical relay which applies power to the cooling fans.
Claims18
A temperature management system for an air compressor comprising:
- a plurality of cooling fans coupled to an intercooler of the air compressor;
- an electrical relay comprising a coil and contacts operated by the coil, the contacts located in series between the cooling fans and an electrical power supply;
- and
- a temperature switch coupled in series to the coil of the electrical relay,
- wherein the temperature switch opens at a temperature above a predetermined temperature at a high pressure inlet of a high pressure stage of the air compressor, thereby closing the contacts of the electrical relay which applies power to the cooling fans, and
- the intercooler is configured to cool air between the lower pressure stage and the high pressure stage of the compressor.
An electrical circuit for controlling a plurality of cooling fans coupled to an intercooler of an air compressor, the electrical circuit comprising:
- a load circuit comprising:
- the plurality of cooling fans;
- and
- contacts of an electrical relay located in series between the cooling fans and an electrical power supply;
- and
- a switching circuit comprising:
- a temperature switch;
- and
- a coil of the electrical relay coupled in series with the temperature switch,
- wherein the temperature switch opens at a predetermined temperature at a high pressure inlet of a high pressure stage of the air compressor, thereby closing the contacts of the electrical relay which applies power to the cooling fans, and
- the intercooler is configured to cool air between the lower pressure stage and the high pressure stage of the compressor.
A method of installing an air compressor on a locomotive, the method comprising the steps of:
- providing an air compressor having a temperature management system, the temperature management system comprising:
- a plurality of cooling fans coupled to an intercooler of the air compressor;
- an electrical relay comprising a coil and contacts operated by the coil, the contacts located in series between the cooling fans and an electrical power supply;
- and
- a temperature switch coupled in series with the coil of the electrical relay;
- and
- mounting the air compressor with the temperature management system at a location remote from a radiator of the locomotive,
- wherein the temperature switch opens at a temperature above a predetermined temperature, thereby closing the contacts of the electrical relay which applies power to the cooling fans, and
- the intercooler is configured to cool air between the lower pressure stage and the high pressure stage of the compressor.
Dependencies are inferred from the claim text.