US4797783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cooling equipment for electronic systems
Assignee: NEC Corp
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Filing: 1987-10-13
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Granted: 1989-01-10
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Expires: 2007-10-13
Abstract
Abstract An air cooling equipment for use in electronic systems having a plurality of wiring boards with a plurality of heat-generating electronic components mounted thereon is disclosed. The air cooling equipment uses two blowers positioned on top and bottom of the unit and introduces cooling air in two directions into the housing. The blowers may be positioned at sides of the housing and air is directed around and through the zone where the wiring boards are disposed.
Inventors
- 👤 Mitsuo Kohmoto
- 👤 Yohichi Matsuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:40
CPC Classifications
H; H05; H05K; H05K7/00; H05K7/20; H05K7/20536; H05K7/20554; H05K7/20572
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
163 words
Air cooling equipment housing having therein a plurality of wiring boards with a plurality of heat generating electric components mounted thereon, said air cooling equipment housing comprising: first blower means introducing cooling air from top of the housing; first air passage means having an intake port, an air passage over at least one of said plurality of wiring boards and an exhaust port, said first air passage means passing the air from said first blower over said one of said plurality of boards wiring and exhausting it; second blower means introducing cooling air from bottom of the housing; second air passage means having an intake port, an air passage over at least a second of said plurality of wiring boards and an exhaust port, said second air passage means passing the air from said second blower over said second of said plurality of boards and exhausting it; and a partition wall separating said first air passage means and said second air passage means.
Claim 2
Dependent Claim
163 words
Air cooling equipment housing having therein a plurality of wiring boards with a plurality of heat generating electric components mounted thereon, said air cooling equipment housing comprising: first blower means introducing cooling air from top of the housing; first air passage means having an intake port, an air passage over at least one of said plurality of wiring boards and an exhaust port, said first air passage means passing the air from said first blower over said one of said plurality of boards wiring and exhausting it; second blower means introducing cooling air from bottom of the housing; second air passage means having an intake port, an air passage over at least a second of said plurality of wiring boards and an exhaust port, said second air passage means passing the air from said second blower over said second of said plurality of boards and exhausting it; and a partition wall separating said first air passage means and said second air passage means.
Claim 3
Dependent Claim
42 words
The equipment housing of claim 1 wherein said plurality of wiring boards are mounted in parallel rows on a mother board, said housing containing a plurality of mother boards and, said partition wall positioned between two of said plurality of mother boards.
Claim 4
Dependent Claim
67 words
The equipment housing of claim 2 further comprising cover means disposed on a side of said housing, said exhaust ports being positioned on opposite sides of said partition wall, guide plate means directing air to said exhaust ports, wherein air introduced from the top and bottom of said housing circulated around said heat-generating elements and exhausts on opposite sides of said partition wall through said exhaust ports.
Claim 5
Dependent Claim
110 words
Air cooling equipment housing having therein a plurality of wiring boards with a plurality of heat generating electric components mounted thereon, said air cooling equipment housing comprising: intake duct means introducing cooling air from a bottom of said housing; blower means receiving air from said intake duct means; first and second conduit path means passing air from said blower means, said first and second conduit path means being located respectively on sides of the housing; air guide means directing air from said first and second conduit path means across said heat generating components; and exhaust duct means exhausting air from said air guide means at top part of said housing.
Claim 6
Dependent Claim
110 words
Air cooling equipment housing having therein a plurality of wiring boards with a plurality of heat generating electric components mounted thereon, said air cooling equipment housing comprising: intake duct means introducing cooling air from a bottom of said housing; blower means receiving air from said intake duct means; first and second conduit path means passing air from said blower means, said first and second conduit path means being located respectively on sides of the housing; air guide means directing air from said first and second conduit path means across said heat generating components; and exhaust duct means exhausting air from said air guide means at top part of said housing.
Claim 7
Dependent Claim
59 words
The equipment housing of claim 2 wherein said wiring boards having said conduit path means on each side thereof; a vertical disposed separation plate positioned between said heat generating components wherein air circulating from one of said conduit path means into said heat generating components does not mix with air circulating from the other of said conduit path means.
Claim 8
Dependent Claim
51 words
The equipment housing of claim 2 wherein said blower means comprises first and second blowers positioned in said housing at opposite sides of said intake duct means and, said conduit path means comprises first and second conduits that receive air from said blowers and direct it toward said heat generating components.
Claim 9
Dependent Claim
44 words
The equipment housing of claim 2 further comprising a first outer cover, said first outer cover attached to said housing, said exhaust duct being located in said first outer cover and said air guide means separating said heat generating components from said exhaust duct.
Claim 10
Dependent Claim
43 words
The equipment housing of claim 7 further comprising a horizontally disposed separation plate in said housing, a second outer cover, said first outer cover mounted on one side of said separation plate and said second outer cover mounted on the other side thereof.
Claim 11
Dependent Claim
37 words
The equipment housing of claim 7 wherein said first outer cover is joined to said air guide means, said air guide means comprising a separating wall having a vertically oriented channel providing communication to said exhaust duct.
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) | 1992-01-10 | 1992-07-11 | 1993-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-10 | 1996-07-11 | 1997-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-10 | 2000-07-11 | 2001-01-10 | $7700.00 | Window Closed / Lapsed |