US4897762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system and method for electronic circuit devices
Assignee: Hitachi Ltd
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Filing: 1988-07-19
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Granted: 1990-01-30
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Expires: 2008-07-19
Abstract
Abstract In a system for cooling electronic circuit devices to be tested, e.g., LSIs a cooling fluid is sprayed against the cooling surface of an electronic circuit device to cool the device, and also air is supplied in the opposite direction to the flow of the cooling fluid to form an air curtain, thereby preventing the cooling fluid from depositing on the electric circuitry of the devices.
Inventors
- 👤 Takahiro Daikoku
- 👤 Ryuichi Takagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:31
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/40; H10W40/47; H10W40/475; H05; H05K; H05K7/00; H05K7/20; H05K7/2029; H05K7/20345
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
83 words
A cooling system for at least one electronic circuit device having a surface to be cooled comprising: first means for spraying a liquid against the surface of the at least one electronic circuit device; and second means for supplying a gas so as to substantially surround at least a portion of a spray of said liquid and to flow in a direction opposite to the flow of said liquid to prevent said liquid from flowing into contact with circuitry associated with said device.
Claim 2
Dependent Claim
83 words
A cooling system for at least one electronic circuit device having a surface to be cooled comprising: first means for spraying a liquid against the surface of the at least one electronic circuit device; and second means for supplying a gas so as to substantially surround at least a portion of a spray of said liquid and to flow in a direction opposite to the flow of said liquid to prevent said liquid from flowing into contact with circuitry associated with said device.
Claim 3
Dependent Claim
37 words
A cooling system according to claim 1, whereinsaid at last one electronic circuit device is either one of an LSI chip or an LSI package, and wherein said liquid is pure water and said gas is air.
Claim 4
Dependent Claim
119 words
A cooling system for at least one electronic circuit device having a surface to be cooled comprising: a substrate for operatively holding the at least one electronic circuit device in relation to the cooling system; a member arranged around the at least one electronic circuit device to define a gap; spraying means on a side of the gap for spraying a first fluid against the surface of the at least one electronic circuit device; and supply means on an opposite side of the gap for supplying a second fluid through said gap in a direction opposite to a spray direction of said first fluid to prevent said first fluid from flowing into contact with circuitry associated with said device.
Claim 5
Dependent Claim
119 words
A cooling system for at least one electronic circuit device having a surface to be cooled comprising: a substrate for operatively holding the at least one electronic circuit device in relation to the cooling system; a member arranged around the at least one electronic circuit device to define a gap; spraying means on a side of the gap for spraying a first fluid against the surface of the at least one electronic circuit device; and supply means on an opposite side of the gap for supplying a second fluid through said gap in a direction opposite to a spray direction of said first fluid to prevent said first fluid from flowing into contact with circuitry associated with said device.
Claim 6
Dependent Claim
125 words
A cooling system for at least one electronic circuit device having a surface to be cooled, comprising: a substrate for holding the at least one electronic circuit device; a supporting member operatively arranged to support said subtrate and to form a gap around the at least one electronic circuit device; a substantially cloed space defined by said supporting member and the surface of the at least one electronic circuit device; spraying means for spraying a cooling fluid against the surface of the at least one electronic circuit device; an air chamber formed around the at least one electronic circuit device to pass outside air thereinto; and means for maintaining a lower pressure within said substantially closed space then a pressure outside said substantially closed space.
Claim 7
Dependent Claim
125 words
A cooling system for at least one electronic circuit device having a surface to be cooled, comprising: a substrate for holding the at least one electronic circuit device; a supporting member operatively arranged to support said subtrate and to form a gap around the at least one electronic circuit device; a substantially cloed space defined by said supporting member and the surface of the at least one electronic circuit device; spraying means for spraying a cooling fluid against the surface of the at least one electronic circuit device; an air chamber formed around the at least one electronic circuit device to pass outside air thereinto; and means for maintaining a lower pressure within said substantially closed space then a pressure outside said substantially closed space.
Claim 8
Dependent Claim
112 words
A cooling system for at least one electronic circuit device having a surface to be cooled, comprising: a substrate for holding the at least one electronic circuit device; a supporting member arranged to support said substrate and to form a gap around the at least one electronic circuit device; spraying means for spraying a cooling fluid against the surface of the at least one electronic circuit device; and an air chamber formed around the at least one electronic circuit device for discharging high-pressure air through said gap in a direction opposite to the flow of said cooling fluid to prevent said fluid from flowing into contact with circuitry associated with said device.
Claim 9
Dependent Claim
112 words
A cooling system for at least one electronic circuit device having a surface to be cooled, comprising: a substrate for holding the at least one electronic circuit device; a supporting member arranged to support said substrate and to form a gap around the at least one electronic circuit device; spraying means for spraying a cooling fluid against the surface of the at least one electronic circuit device; and an air chamber formed around the at least one electronic circuit device for discharging high-pressure air through said gap in a direction opposite to the flow of said cooling fluid to prevent said fluid from flowing into contact with circuitry associated with said device.
Claim 10
Dependent Claim
75 words
A cooling method for at least one electronic circuit device having a surface to be cooled, comprising the steps of: spraying liquid against the surface of the at least one electronic circuit device; and supplying gas in a direction opposite to the flow of said liquid so as to substantially surround at least a portion of the spray of said liquid to prevent said liquid from flowing into contact with circuitry associated with said device.
Claim 11
Dependent Claim
75 words
A cooling method for at least one electronic circuit device having a surface to be cooled, comprising the steps of: spraying liquid against the surface of the at least one electronic circuit device; and supplying gas in a direction opposite to the flow of said liquid so as to substantially surround at least a portion of the spray of said liquid to prevent said liquid from flowing into contact with circuitry associated with said device.
Claim 12
Dependent Claim
92 words
A cooling method for at least one electronic circuit device having a surface to be cooled, comprising the steps of: spraying a cooling fluid against the surface of the at least one electronic circuit device to cool the device; and supplying air simultaneously with said cooling fluid in a direction opposite to the flow of said cooling fluid so as to substantially surround at least a portion of said cooling liquid and thereby form an air curtain to prevent said cooling fluid from flowing into contact with circuitry associated with said device.
Claim 13
Dependent Claim
92 words
A cooling method for at least one electronic circuit device having a surface to be cooled, comprising the steps of: spraying a cooling fluid against the surface of the at least one electronic circuit device to cool the device; and supplying air simultaneously with said cooling fluid in a direction opposite to the flow of said cooling fluid so as to substantially surround at least a portion of said cooling liquid and thereby form an air curtain to prevent said cooling fluid from flowing into contact with circuitry associated with said device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-29 | 1993-07-31 | 1994-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-29 | 1997-07-31 | 1998-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-29 | 2001-07-31 | 2002-01-30 | $7700.00 | Window Closed / Lapsed |