US3948060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system particularly for producing refrigerated air
Assignee: Individual
•
Filing: 1974-11-29
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Granted: 1976-04-06
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Expires: 1994-11-29
Abstract
Abstract The invention relates to an air conditioning system for producing refrigerated air, comprising as many evaporator convectors as there are rooms to be air-conditioned, each evaporator being connected by means of supply and return pipes, to a condensation unit placed outside the rooms that are to be air-conditioned.
Inventors
- 👤 Andre Jean Gaspard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:15
CPC Classifications
F; F24; F24F; F24F5/00; F24F5/0007; F24F5/001; F25; F25B; F25B5/00; F25B5/02; F25B2400/00; F25B2400/07; F25B2400/075; F25B2500/00; F25B2500/26; F25B2600/00; F25B2600/02; F25B2600/026; F25B2600/0261
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
In an air conditioning system for producing cool air, a pluraluty of evaporators to cool various rooms at different and variable temperatures, the evaporators being connected to each other in parallel by refrigerant supply and return lines, a condensation unit connected to the supply and return lines to be placed outside of the rooms to be cooled and including a plurality of compressors connected in parallel to the supply and return lines, means responsive to the pressure of the returning gaseous refrigerant in the return line to energize and deenergize the compressors at certain pressure levels in the return line so that the number of compressors in operation will be related to the heat load in the various rooms to be cooled, and a bypass between the discharge of the compressors and the return line with a control valve therein constructed to maintain the suction pressure at a generally constant level regardless of the number of evaporators operating.
Claim 2
Dependent Claim
158 words
In an air conditioning system for producing cool air, a pluraluty of evaporators to cool various rooms at different and variable temperatures, the evaporators being connected to each other in parallel by refrigerant supply and return lines, a condensation unit connected to the supply and return lines to be placed outside of the rooms to be cooled and including a plurality of compressors connected in parallel to the supply and return lines, means responsive to the pressure of the returning gaseous refrigerant in the return line to energize and deenergize the compressors at certain pressure levels in the return line so that the number of compressors in operation will be related to the heat load in the various rooms to be cooled, and a bypass between the discharge of the compressors and the return line with a control valve therein constructed to maintain the suction pressure at a generally constant level regardless of the number of evaporators operating.
Claim 3
Dependent Claim
38 words
The structure of claim 1 further characterized by and including a heat exchanger between the supply and return lines disposed so that the refrigerant passing through the bypass goes through the heat exchanger before returning to the compressors.
Claim 4
Dependent Claim
35 words
The structure of claim 1 further characterized by and including a heat exchanger between the supply and return lines disposed so that the bypass is connected to the supply line ahead of the heat exchanger.
Claim 5
Dependent Claim
41 words
The structure of claim 1 further characterized in that each evaporator has a solenoid valve controlled by ambient air temperature in its room to control the circulation of the refrigerant, and a capillary tube between the supply line and solenoid valve.
Claim 6
Dependent Claim
33 words
The structure of claim 1 further characterized in that each compressor has a bypass between its supply and return lines with an automatic decompression valve located therein to facilitate start-up of the compressor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |