US4243893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supplemental cooling system for portable electric power plants
Assignee: Electrolux AB
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Filing: 1978-11-03
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Granted: 1981-01-06
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Expires: 1998-11-03
Abstract
Abstract The system utilizes excess primary coolant air normally utilized to cool the primary components (generator and engine) and diverts the cooling air to enclosures requiring supplemental cooling. Air from the engine blower is diverted through a double hulled enclosure around the exhaust system to reduce noise, fire hazard and burn hazard. Air from the generator cooling fan is diverted through a duct to an electronics enclosure. The air thus diverted provides direct supplemental cooling to increase the performance and reliability of the electronics mounted on the power plant and to reduce the exterior temperature of the enclosure for the purposes noted for the exhaust system enclosure.
Inventors
- 👤 Nathan Sten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:56
CPC Classifications
F; F02; F02B; F02B63/00; F02B63/04; F01; F01P; F01P1/00; F01P1/06; F01P5/00; F01P5/02; F01P5/06; F02B77/00; F02B77/11; F02B77/13; F02B63/044; F02B63/048
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
101 words
A cooling system for power plant enclosures incorporating means for generating cooling air flow for cooling the primary components of the power plant, including an engine cooling blower in a blower housing, the invention comprising: a diverter means for diverting a portion of the cooling air flow away from the primary components, said diverter means comprising an opening in the blower housing, duct means for ducting the diverted air flow to an enclosure mounted on said power plant, and into heat transfer relationship with heated elements associated with said enclosure, discharge means for exhausting said diverted air flow from said enclosure.
Claim 2
Dependent Claim
101 words
A cooling system for power plant enclosures incorporating means for generating cooling air flow for cooling the primary components of the power plant, including an engine cooling blower in a blower housing, the invention comprising: a diverter means for diverting a portion of the cooling air flow away from the primary components, said diverter means comprising an opening in the blower housing, duct means for ducting the diverted air flow to an enclosure mounted on said power plant, and into heat transfer relationship with heated elements associated with said enclosure, discharge means for exhausting said diverted air flow from said enclosure.
Claim 3
Dependent Claim
65 words
The cooling system according to claim 1, wherein said power plant incorporates an engine exhaust system and wherein: said enclosure having a double hulled construction surrounding at least a part of said power plant and overlying at least a part of the engine exhaust system thereof, said duct means comprising the air passage formed in the space between the walls of said double hulled enclosure.
Claim 4
Dependent Claim
19 words
The cooling system according to claim 2, wherein: said double hulled enclosure surrounds substantially the entire engine exhaust system.
Claim 5
Dependent Claim
48 words
A cooling system according to claim 1, wherein said power plant incorporates a generator cooling fan primarily for cooling the electric generator of said power plant and wherein: said diverter means comprises a duct from said generator cooling fan to an electronic enclosure mounted on said power plant.
Claim 6
Dependent Claim
49 words
The cooling system according to claim 4, wherein the generator cooling fan comprises a coaxial fan in a coaxial housing and wherein: said duct comprises tubing penetrating the generator fan housing and having a terminal end positioned in general alignment with the air flow generated by said cooling fan.
Claim 7
Dependent Claim
20 words
The cooling system according to claim 5, wherein: said tubing terminates in said fan housing with a bell-shaped flared termination.
Claim 8
Dependent Claim
33 words
The cooling system according to claim 4, wherein the power plant further incorporates an engine cooling blower in a blower housing and wherein: said diverter means additionally comprises an opening in said housing.
Claim 9
Dependent Claim
65 words
The cooling system according to claim 7, wherein said power plant incorporates an engine exhaust system and wherein: said enclosure having a double hulled construction surrounding at least a part of said power plant and overlying at least a part of the engine exhaust system thereof, said duct means comprising the air passage formed in the space between the walls of said double hulled enclosure.
Claim 10
Dependent Claim
19 words
The cooling system according to claim 8, wherein: said double hulled enclosure surrounds substantially the entire engine exhaust system.
Claim 11
Dependent Claim
111 words
In a power plant including an internal combustion engine, an exhaust system for the engine and means for generating cooling air flow mounted to provide a flow of cool air for cooling said power plant, the improvement comprising: a single walled enclosure surrounding at least a portion of said engine, a double walled section of said enclosure surrounding at least a portion of the exhaust system, means directing air from said means for generating cooling air flow into said first enclosure, means directing air from said first enclosure to flow between the walls of said double walled section, and means exhausting air from between the walls of said double walled section.
Claim 12
Dependent Claim
111 words
In a power plant including an internal combustion engine, an exhaust system for the engine and means for generating cooling air flow mounted to provide a flow of cool air for cooling said power plant, the improvement comprising: a single walled enclosure surrounding at least a portion of said engine, a double walled section of said enclosure surrounding at least a portion of the exhaust system, means directing air from said means for generating cooling air flow into said first enclosure, means directing air from said first enclosure to flow between the walls of said double walled section, and means exhausting air from between the walls of said double walled section.
Claim 13
Dependent Claim
26 words
The power plant of claim 10 wherein: said double walled section is spaced from said exhaust system and extends horizontally across the top of the engine.
Claim 14
Dependent Claim
50 words
The power plant of claim 10 further comprising: a generator having a cooling fan therein, an electronic circuit, an enclosure means surrounding said electronic circuit, and duct means coupled between said enclosure means and said generator for directing air from the cooling fan of said generator into said enclosure means.
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) | 1984-01-06 | 1984-07-07 | 1985-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-06 | 1988-07-07 | 1989-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-06 | 1992-07-07 | 1993-01-06 | $7700.00 | Window Closed / Lapsed |