US4248051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and method for controlling air conditioning systems
Assignee: CONTROL ENGINEERING Inc A NJ CORP
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Filing: 1979-10-29
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Granted: 1981-02-03
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Expires: 1999-10-29
Abstract
Abstract A system and method for controlling a refrigeration unit of an air conditioning system operating in connection with a given building environment so as to establish conditions providing a desired comfort level within the building environment, the system and method being arranged to detect the output of the refrigeration unit, to detect changes in interior or exterior conditions which will affect the comfort level in the building environment and to provide at least one control signal in response to the detected output and conditions for operating the refrigeration unit, the control signal being compensated for the predetermined dynamic characteristics of the particular refrigeration unit and the predetermined dynamic characteristics of the particular building environment such that the control signal will anticipate further change in the conditions within the building environment and will operate the refrigeration unit so as to counter the anticipated further change and tend to maintain the desired comfort level.
Inventors
- 👤 Jon J. Darcy
- 👤 Richard A. Angerame
- 👤 Aaron R. Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:45
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/62; F24F11/70; F24F11/80; F24F11/83; F24F11/84; F25; F25B; F25B49/00; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1927; G05D23/193; G05D23/1931; G05D23/20; G05D23/24
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
218 words
A control system for a refrigeration unit of an air conditioning system operating in connection with a given building environment so as to establish conditions providing a desired comfort level within the building environment, the refrigeration unit and the building environment each having predetermined dynamic characteristics, said control system comprising: energy input control means for controlling the energy supplied to the refrigeration unit; first detector means for detecting the output of the refrigeration unit and providing a first signal indicative of the output; first compensating means responsive to the first signal for providing a control signal compensated for the predetermined dynamic characteristics of the refrigeration unit; second detector means for detecting a change in at least one condition indicative of a change in the conditions affecting the comfort level within the building environment and providing a second signal; and second compensating means responsive to the control signal and to the second signal for providing a further control signal to the energy input control means, the further control signal being compensated for the predetermined dynamic characteristics of the building environment, such that said further control signal will anticipate further change in the conditions within the building environment and will operate the energy input control means to counter the anticipated further change and tend to maintain the desired comfort level.
Claim 2
Dependent Claim
218 words
A control system for a refrigeration unit of an air conditioning system operating in connection with a given building environment so as to establish conditions providing a desired comfort level within the building environment, the refrigeration unit and the building environment each having predetermined dynamic characteristics, said control system comprising: energy input control means for controlling the energy supplied to the refrigeration unit; first detector means for detecting the output of the refrigeration unit and providing a first signal indicative of the output; first compensating means responsive to the first signal for providing a control signal compensated for the predetermined dynamic characteristics of the refrigeration unit; second detector means for detecting a change in at least one condition indicative of a change in the conditions affecting the comfort level within the building environment and providing a second signal; and second compensating means responsive to the control signal and to the second signal for providing a further control signal to the energy input control means, the further control signal being compensated for the predetermined dynamic characteristics of the building environment, such that said further control signal will anticipate further change in the conditions within the building environment and will operate the energy input control means to counter the anticipated further change and tend to maintain the desired comfort level.
Claim 3
Dependent Claim
27 words
The invention of claim 1 wherein the first compensating means is responsive to the time rate of change of the first signal to provide the control signal.
Claim 4
Dependent Claim
30 words
The invention of claim 1 or 2 wherein the second compensating means is responsive to the time rate of change of the second signal to provide the further control signal.
Claim 5
Dependent Claim
21 words
The invention of claim 1 wherein the second detector means includes a plurality of detectors for detecting a plurality of conditions.
Claim 6
Dependent Claim
34 words
The invention of claim 4 wherein the second compensating means includes a plurality of dynamic compensators corresponding to the plurality of detectors such that each dynamic compensator receives a signal from a corresponding detector.
Claim 7
Dependent Claim
32 words
The invention of claim 5 wherein the refrigeration unit includes further control means and the second compensating means provides at least one still further control signal for operating said further control means.
Claim 8
Dependent Claim
47 words
The invention of claim 4, 5 or 6 wherein at least one of the detectors detects an external condition outside of the building environment, which external condition will affect the comfort level within the building environment in accordance with the predetermined dynamic characteristics of the building environment.
Claim 9
Dependent Claim
46 words
The invention of claim 4, 5 or 6 wherein at least one of the detectors detects an internal condition within the building environment, which internal condition will affect the comfort level within the building environment in accordance with the predetermined dynamic characteristics of the building environment.
Claim 10
Dependent Claim
43 words
The invention of claim 7 wherein at least one of the detectors detects an internal condition within the building environment, which internal condition will affect the comfort level within the building environment in accordance with the predetermined dynamic characteristics of the building environment.
Claim 11
Dependent Claim
31 words
The invention of claim 7 wherein the plurality of detectors includes detectors for detecting at least one of the following external conditions: air temperature, air humidity, sun load, and wind velocity.
Claim 12
Dependent Claim
31 words
The invention of claim 8 wherein the plurality of detectors includes detectors for detecting at least one of the following internal conditions: air temperature, air humidity, radiation temperature and electrical load.
Claim 13
Dependent Claim
52 words
The invention of claim 9 wherein the plurality of detectors includes: detectors for detecting at least one of the following external conditions: air temperature, air humidity, sun load, and wind velocity; and detectors for detecting at least one of the following internal conditions: air temperature, air humidity, radiation temperature and electrical load.
Claim 14
Independent Claim
211 words
A method for controlling a refrigeration unit of an air conditioning system operating in connection with a given building environment so as to establish conditions providing a desired comfort level within the building environment, the refrigeration unit having energy input control means for controlling the energy supplied to the refrigeration unit, and the refrigeration unit and the building environment each having predetermined dynamic characteristics, said method comprising the steps of: detecting the output of the refrigeration unit and providing a first signal indicative of the output; providing, in response to the first signal, a control signal compensated for the predetermined dynamic characteristics of the refrigeration unit; detecting a change in at least one condition indicative of a change in the conditions affecting the comfort level within the building environment and providing a second signal; and providing, in response to the control signal and to the second signal, a further control signal to the energy input control means, the further control signal being compensated for the predetermined dynamic characteristics of the building environment, such that said further control signal will anticipate further change in the conditions within the building environment and will operate the energy input control means to counter the anticipated further change and tend to maintain the desired comfort level.
Claim 15
Independent Claim
211 words
A method for controlling a refrigeration unit of an air conditioning system operating in connection with a given building environment so as to establish conditions providing a desired comfort level within the building environment, the refrigeration unit having energy input control means for controlling the energy supplied to the refrigeration unit, and the refrigeration unit and the building environment each having predetermined dynamic characteristics, said method comprising the steps of: detecting the output of the refrigeration unit and providing a first signal indicative of the output; providing, in response to the first signal, a control signal compensated for the predetermined dynamic characteristics of the refrigeration unit; detecting a change in at least one condition indicative of a change in the conditions affecting the comfort level within the building environment and providing a second signal; and providing, in response to the control signal and to the second signal, a further control signal to the energy input control means, the further control signal being compensated for the predetermined dynamic characteristics of the building environment, such that said further control signal will anticipate further change in the conditions within the building environment and will operate the energy input control means to counter the anticipated further change and tend to maintain the desired comfort level.
Claim 16
Dependent Claim
23 words
The invention of claim 13 wherein the control signal is provided in response to the time rate of change of the first signal.
Claim 17
Dependent Claim
26 words
The invention of claim 13 or 14 wherein the further control signal is provided in response to the time rate of change of the second signal.
Claim 18
Dependent Claim
12 words
The invention of claim 13 wherein a plurality of conditions are detected.
Claim 19
Dependent Claim
34 words
The invention of claim 16 wherein the refrigeration unit includes further control means and the method includes the step of providing at least one still further control signal for operating said further control means.
Claim 20
Dependent Claim
47 words
The invention of claim 16 or 17 wherein at least one of the detected conditions is an external condition outside of the building environment, which external condition will affect the comfort level within the building environment in accordance with the predetermined dynamic characteristics of the building environment.
Claim 21
Dependent Claim
46 words
The invention of claim 16 or 17 wherein at least one of the detected conditions is an internal condition within the building environment, which internal condition will affect the comfort level within the building environment in accordance with the predetermined dynamic characteristics of the building environment.
Claim 22
Dependent Claim
44 words
The invention of claim 18 wherein at least one of the detected conditions is an internal condition within the building environment, which internal condition will affect the comfort level within the building environment in accordance with the predetermined dynamic characteristics of the building environment.
Claim 23
Dependent Claim
29 words
The invention of claim 18 wherein the plurality of detected conditions includes at least one of the following external conditions: air temperature, air humidity, sun load, and wind velocity.
Claim 24
Dependent Claim
29 words
The invention of claim 19 wherein the plurality of detected conditions includes at least one of the following internal conditions: air temperature, air humidity, radiation temperature and electrical load.
Claim 25
Dependent Claim
47 words
The invention of claim 20 wherein the plurality of detected conditions includes: at least one of the following external conditions: air temperature, air humidity, sun load, and wind velocity; and at least one of the following internal conditions: air temperature, air humidity, radiation temperature and electrical load.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |