US5397181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressor discharge temperature sensing system
Assignee: General Electric Co
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Filing: 1993-10-21
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Granted: 1995-03-14
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Expires: 2013-10-21
Abstract
Abstract A compressor discharge temperature sensing system senses compressor discharge temperature for a compressor located within a housing. A sensor mounted external to the flow path receives high pressure air discharged from the compressor. The high pressure air flows past at least one thermocouple in the housing and through a purge line. The thermocouple measures the high pressure air temperature and the high pressure air is then returned to the flow path.
Inventors
- 👤 Michael McNulty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:32
CPC Classifications
G; G01; G01K; G01K13/00; G01K13/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
87 words
A compressor discharge temperature sensing system comprising: a compressor located within a casing and having a compressor air flow path; a sensor contained in a sensor housing and mounted external to the flow path for extracting air external to the compressor casing; at least one thermocouple associated with said sensor housing for measuring the air temperature of the extracted air; and a purge line associated with an outlet of the sensor for venting the air to a sink pressure to be used as cooling and purge flow.
Claim 2
Dependent Claim
87 words
A compressor discharge temperature sensing system comprising: a compressor located within a casing and having a compressor air flow path; a sensor contained in a sensor housing and mounted external to the flow path for extracting air external to the compressor casing; at least one thermocouple associated with said sensor housing for measuring the air temperature of the extracted air; and a purge line associated with an outlet of the sensor for venting the air to a sink pressure to be used as cooling and purge flow.
Claim 3
Dependent Claim
36 words
A compressor discharge temperature sensing system as claimed in claim 1 further comprising means for sending an electrical signal from the at least one thermocouple to an electronic control unit capable of indicating the air temperature.
Claim 4
Dependent Claim
23 words
A compressor discharge temperature sensing system as claimed in claim 2 wherein the at least one thermocouple is contained in the sensor housing.
Claim 5
Dependent Claim
23 words
A compressor discharge temperature sensing system as claimed in claim 1 wherein the sensor is mounted adjacent a high pressure compressor discharge area.
Claim 6
Dependent Claim
120 words
A compressor discharge temperature sensing system comprising: a compressor having a compressor casing and further having compressor discharge via a flow path, the compressor discharge including high pressure air; a sensor contained in a sensor housing and mounted external to the flow path for receiving the high pressure air; at least one thermocouple mounted in the sensor housing for measuring the high pressure air temperature; a purge line located in an associated relation with the sensor to receive the high pressure air; means for returning the high pressure air to the flow path; and a purge line connected to an outlet of the sensor for venting the air to a sink pressure to be used as cooling and purge flow.
Claim 7
Dependent Claim
120 words
A compressor discharge temperature sensing system comprising: a compressor having a compressor casing and further having compressor discharge via a flow path, the compressor discharge including high pressure air; a sensor contained in a sensor housing and mounted external to the flow path for receiving the high pressure air; at least one thermocouple mounted in the sensor housing for measuring the high pressure air temperature; a purge line located in an associated relation with the sensor to receive the high pressure air; means for returning the high pressure air to the flow path; and a purge line connected to an outlet of the sensor for venting the air to a sink pressure to be used as cooling and purge flow.
Claim 8
Dependent Claim
23 words
A compressor discharge temperature sensing system as claimed in claim 5 wherein the sensor comprises an orifice for controlling amount of air flow.
Claim 9
Dependent Claim
32 words
A compressor discharge temperature sensing system as claimed in claim 5 wherein the at least one thermocouple sends an electrical signal to an electronic control unit capable of indicating the air temperature.
Claim 10
Independent Claim
112 words
A method for sensing compressor discharge temperature comprising the steps of: providing a compressor located within a casing and having compressor discharge via a flow path, the compressor discharge including high pressure air; providing a sensor housed in a sensor housing and mounted external to the flow path for receiving the high pressure air; flowing the high pressure air past at least one thermocouple contained in the sensor housing for measuring the high pressure air temperature; connecting a purge line to an outlet of the sensor for venting the air to a sink pressure to be used as cooling and purge flow; and returning the high pressure air to the flow path.
Claim 11
Independent Claim
112 words
A method for sensing compressor discharge temperature comprising the steps of: providing a compressor located within a casing and having compressor discharge via a flow path, the compressor discharge including high pressure air; providing a sensor housed in a sensor housing and mounted external to the flow path for receiving the high pressure air; flowing the high pressure air past at least one thermocouple contained in the sensor housing for measuring the high pressure air temperature; connecting a purge line to an outlet of the sensor for venting the air to a sink pressure to be used as cooling and purge flow; and returning the high pressure air to the flow path.
Claim 12
Dependent Claim
24 words
A method for sensing compressor discharge temperature as claimed in claim 8 wherein the sensor comprises an orifice for controlling amount of air flow.
Claim 13
Dependent Claim
33 words
A method for sensing compressor discharge temperature as claimed in claim 8 wherein the at least one thermocouple sends an electrical signal to an electronic control unit capable of indicating the air temperature.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-13 | 1998-09-12 | 1999-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-13 | 2002-09-12 | 2003-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-13 | 2006-09-12 | 2007-03-14 | $7700.00 | Window Closed / Lapsed |