Patent US4810100A successfully refreshed from Google Patents.
US4810100A
Expired / Lapsed
US
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Ultrasonic energy transfer sensing system
Assignee: Honeywell Inc
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Filing: 1984-05-30
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Granted: 1989-03-07
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Expires: 2004-05-30
Abstract
Abstract A system is disclosed for determining the energy transfer across a heat exchanger having an upstream side and a downstream side and mounted within a conduit through which fluid flows, the system including an ultrasonic transmitter for transmitting ultrasonic waves through the conduit on the upstream and downstream sides of the heat exchanger, an ultrasonic receiver for receiving the ultrasonic waves on the upstream and downstream sides of the heat exchanger, the receiver providing signals indicative of the temperature difference between the fluid upstream and downstream of the heat exchanger and the velocity of fluid flow through the conduit and a processor connected to the receiver for determining energy transfer between the heat exchanger and the fluid based upon the signals indicative of the temperature difference and the velocity.
Inventors
- 👤 Gideon Shavit
- 👤 Louis S. Smulkstys
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:04
CPC Classifications
G; G01; G01K; G01K17/00; G01K17/06; G01K17/08; G01K17/10; G01K17/12; G01K17/16; G01K11/00; G01K11/22; G01K11/24; G01P; G01P5/00; G01P5/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
303 words
A system for determining the energy transfer across a heat exchanger mounted in a duct of an air conditioning system, said heat exchanger having an upstream side and a downstream side such that said heat exchanger transfers energy to air moving through said air conditioning duct, said system measuring the energy transferred to said air by said heat exchanger, said system comprising: ultrasonic transmitter means for transmitting ultrasonic waves through said duct on said upstream and downstream sides of said heat exchanger; ultrasonic receiver means for receiving said ultrasonic waves on said upstream and downstream sides of said heat exchanger, said receiver means providing signals indicative of the temperature difference between the air upstream and downstream of said heat exchanger and the velocity of air flow through said duct; processing means connected to said ultrasonic receiver means for determining energy transfer between said heat exchanger and said air based upon said signals indicative of said temperature difference and said velocity; wherein said ultrasonic transmitter means comprises a first transmitter transducer located upstream of said heat exchanger and a second transmitter transducer located downstream of said heat exchanger; and wherein said ultrasonic receiver means comprises a first receiver transducer located upstream of said heat exchanger and oriented with said first transmitter transducer such that a line between said first transmitter transducer and said first receiver transducer is substantially perpendicular to air flowing through said duct, a second receiver transducer located downstream of said heat exchanger such that a line through said second transmitter transducer and said second receiver transducer is substantially perpendicular to the air flowing through said duct, and a third receiver transducer located such that a line between said third receiver transducer and one of said first and second transmitter transducers is at an angle to said air flowing through said duct.
Claim 2
Independent Claim
303 words
A system for determining the energy transfer across a heat exchanger mounted in a duct of an air conditioning system, said heat exchanger having an upstream side and a downstream side such that said heat exchanger transfers energy to air moving through said air conditioning duct, said system measuring the energy transferred to said air by said heat exchanger, said system comprising: ultrasonic transmitter means for transmitting ultrasonic waves through said duct on said upstream and downstream sides of said heat exchanger; ultrasonic receiver means for receiving said ultrasonic waves on said upstream and downstream sides of said heat exchanger, said receiver means providing signals indicative of the temperature difference between the air upstream and downstream of said heat exchanger and the velocity of air flow through said duct; processing means connected to said ultrasonic receiver means for determining energy transfer between said heat exchanger and said air based upon said signals indicative of said temperature difference and said velocity; wherein said ultrasonic transmitter means comprises a first transmitter transducer located upstream of said heat exchanger and a second transmitter transducer located downstream of said heat exchanger; and wherein said ultrasonic receiver means comprises a first receiver transducer located upstream of said heat exchanger and oriented with said first transmitter transducer such that a line between said first transmitter transducer and said first receiver transducer is substantially perpendicular to air flowing through said duct, a second receiver transducer located downstream of said heat exchanger such that a line through said second transmitter transducer and said second receiver transducer is substantially perpendicular to the air flowing through said duct, and a third receiver transducer located such that a line between said third receiver transducer and one of said first and second transmitter transducers is at an angle to said air flowing through said duct.
Claim 3
Dependent Claim
29 words
The system of claim 1 wherein said ultrasonic transmitter means comprises a pulse source for generating a transmit pulse to said transmitter transducers for generating pulses of ultrasonic frequency.
Claim 4
Dependent Claim
34 words
The system of claim 2 wherein said ultrasonic receiver means comprises delay sensing means for sensing any delay in receiving said ultrasonic waves upstream and downstream of said heat exchanger for determining energy transfer.
Claim 5
Dependent Claim
157 words
The system of claim 3 wherein said delay sensing means comprises a high frequency clock, a first counter means connected to said pulse source, to said first receiver transducer and to said high frequency clock for counting clock pulses from said high frequency clock starting with said transmit pulse and terminating with receipt of said ultrasonic wave by said first receiver transducer, a second counting means connected to said pulse source, to said second receiver transducer and to said high frequency clock for counting clock pulses from said high frequency clock starting with said transmit pulse and stopping with receipt of said ultrasonic wave by said second receiver transducer, and a third counting means connected to said pulse source, to said third receiver transducer and to said high frequency clock for counting clock pulses from said high frequency clock starting with said transmit pulse and stopping with receipt of said ultrasonic wave by said third receiver transducer.
Claim 6
Independent Claim
315 words
A system for determining the energy transfer across a heat exchanger mounted in a duct of an air conditioning system, said heat exchanger having an upstream side and a downstream side such that said heat exchanger transfers energy to air moving through said air conditioning duct, said system measuring the energy transferred to said air by said heat exchanger, said system comprising: ultrasonic transmitter means for transmitting ultrasonic waves across said duct on said upstream and downstream sides of said heat exchanger; ultrasonic receiver means for receiving said ultrasonic waves on said upstream and downstream sides of said heat exchanger, said receiver means connected to said ultrasonic transmitter means and providing signals indicative of the temperatures of said air upstream and downstream of said heat exchanger and the velocity of air flow through said duct; processing means connected to said ultrasonic transmitter means and to said ultrasonic receiver means for determining energy transfer between said heat exchanger and said air based upon said signals indicative of said temperature difference and said velocity; wherein said ultrasonic transmitter means comprises a first transmitter transducer located upstream of said heat exchanger and a second transmitter transducer located downstream of said heat exchanger; and wherein said ultrasonic receiver means comprises a first receiver transducer located upstream of said heat exchanger and oriented with said first transmitter transducer such that a line between said first transmitter transducer and said first receiver transducer is substantially perpendicular to air flowing through said duct, a second receiver transducer located downstream of said heat exchanger such that a line through said second transmitter transducer and said second receiver transducer is substantially perpendicular to the air flowing through said duct, and a third receiver transducer located such that a line between said third receiver transducer and one of said first and second transmitter transducers is at an angle to said air flowing through said duct.
Claim 7
Independent Claim
315 words
A system for determining the energy transfer across a heat exchanger mounted in a duct of an air conditioning system, said heat exchanger having an upstream side and a downstream side such that said heat exchanger transfers energy to air moving through said air conditioning duct, said system measuring the energy transferred to said air by said heat exchanger, said system comprising: ultrasonic transmitter means for transmitting ultrasonic waves across said duct on said upstream and downstream sides of said heat exchanger; ultrasonic receiver means for receiving said ultrasonic waves on said upstream and downstream sides of said heat exchanger, said receiver means connected to said ultrasonic transmitter means and providing signals indicative of the temperatures of said air upstream and downstream of said heat exchanger and the velocity of air flow through said duct; processing means connected to said ultrasonic transmitter means and to said ultrasonic receiver means for determining energy transfer between said heat exchanger and said air based upon said signals indicative of said temperature difference and said velocity; wherein said ultrasonic transmitter means comprises a first transmitter transducer located upstream of said heat exchanger and a second transmitter transducer located downstream of said heat exchanger; and wherein said ultrasonic receiver means comprises a first receiver transducer located upstream of said heat exchanger and oriented with said first transmitter transducer such that a line between said first transmitter transducer and said first receiver transducer is substantially perpendicular to air flowing through said duct, a second receiver transducer located downstream of said heat exchanger such that a line through said second transmitter transducer and said second receiver transducer is substantially perpendicular to the air flowing through said duct, and a third receiver transducer located such that a line between said third receiver transducer and one of said first and second transmitter transducers is at an angle to said air flowing through said duct.
Claim 8
Dependent Claim
29 words
The system of claim 5 wherein said ultrasonic transmitter means comprises a pulse source for generating a transmit pulse to said transmitter transducers for generating pulses of ultrasonic frequency.
Claim 9
Dependent Claim
34 words
The system of claim 6 wherein said ultrasonic receiver means comprises delay sensing means for sensing any delay in receiving said ultrasonic waves upstream and downstream of said heat exchanger for determining energy transfer.
Claim 10
Dependent Claim
157 words
The system of claim 7 wherein said delay sensing means comprises a high frequency clock, a first counter means connected to said pulse source, to said first receiver transducer and to said high frequency clock for counting clock pulses from said high frequency clock starting with said transmit pulse and terminating with receipt of said ultrasonic wave by said first receiver transducer, a second counting means connected to said pulse source, to said second receiver transducer and to said high frequency clock for counting clock pulses from said high frequency clock starting with said transmit pulse and stopping with receipt of said ultrasonic wave by said second receiver transducer, and a third counting means connected to said pulse source, to said third receiver transducer and to said high frequency clock for counting clock pulses from said high frequency clock starting with said transmit pulse and stopping with receipt of said ultrasonic wave by said third receiver transducer.
References Cited (Backward Citations)
US4145922A
Cited
SU808854A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |