US5094086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Instant cooling system with refrigerant storage
Assignee: North Pacific Automation Corp
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Filing: 1990-09-25
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Granted: 1992-03-10
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Expires: 2010-09-25
Abstract
Abstract A heat-pump type cooling system is disclosed which can provide cooling immediately before the compressor begins to rotate. The system stores liquid refrigerant condensed from compressed high pressure vapor in a liquid container, and releases it, through a control valve, to an evaporator and a temporary vapor receiver, enabling the cooling power to be controlled independently of the rotation of the compressor, in accordance with the operation of the control valve and the evaporator.
Inventors
- 👤 Jia-Ming Shyu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:16
CPC Classifications
F; F25; F25B; F25B1/00; F25B41/00; F25B41/30; F25B41/31; F25B41/315; F25B2600/00; F25B2600/11; F25B2600/111; F25B2600/112; Y; Y02; Y02B; Y02B30/00; Y02B30/70
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
129 words
An air-conditioning cooling system comprising: a condenser and an evaporator connected in series along a refrigerant path, refrigerant arranged and constructed to circulate through said refrigerant path, a liquid refrigerant storage container disposed between said condenser and said evaporator, a control value disposed between said liquid refrigerant storage container and said evaporator, a vapor receiver disposed between said evaporator and a compressor, a controller arranged and constructed to continue compressor operation, after said control valve has stopped releasing refrigerant to said evaporator, to draw refrigerant fluid from said vapor receiver, propel said fluid through said condenser and into said liquid container, whereby, after said compressor has stopped, said control valve will release refrigerant from said liquid container to said evaporator for providing a cooling effect before said compressor restarts.
Claim 2
Dependent Claim
129 words
An air-conditioning cooling system comprising: a condenser and an evaporator connected in series along a refrigerant path, refrigerant arranged and constructed to circulate through said refrigerant path, a liquid refrigerant storage container disposed between said condenser and said evaporator, a control value disposed between said liquid refrigerant storage container and said evaporator, a vapor receiver disposed between said evaporator and a compressor, a controller arranged and constructed to continue compressor operation, after said control valve has stopped releasing refrigerant to said evaporator, to draw refrigerant fluid from said vapor receiver, propel said fluid through said condenser and into said liquid container, whereby, after said compressor has stopped, said control valve will release refrigerant from said liquid container to said evaporator for providing a cooling effect before said compressor restarts.
Claim 3
Dependent Claim
63 words
An air-conditioning cooling system according to claim 1, further comprising a fluid level sensor associated with said liquid refrigerant storage container, said fluid level sensor arranged and constructed to sense an amount of stored refrigerant and generate signals utilized by said controller in controlling said compressor and said condenser to maintain a correct level of stored refrigerant in said liquid refrigerant storage container.
Claim 4
Dependent Claim
22 words
An air-conditioning cooling system according to claim 1, further comprising a check valve connected in series between said compressor and said condenser.
References Cited (Backward Citations)
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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) | 1995-03-10 | 1995-09-09 | 1996-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-10 | 1999-09-09 | 2000-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-10 | 2003-09-09 | 2004-03-10 | $7700.00 | Window Closed / Lapsed |