US5950442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioning system
Assignee: Ebara Corp
•
Filing: 1997-05-23
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Granted: 1999-09-14
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Expires: 2017-05-23
Abstract
Abstract The air conditioning system can lower the cost by saving the energy through the use of a combination of a circulation type unit and outdoor air intake type unit, as well as simplification of mechanical arrangements. The air conditioning system comprises a first air conditioning unit for processing outdoor air and introducing processed outdoor air into indoors while discharging indoor air to outside; and a second air conditioning unit for processing indoor air while circulating the indoor air. The first air conditioning unit comprises: a desiccant device for adsorbing moisture from the outdoor air and being regenerated by the indoor air to be discharged; and a heat pump device functioning as a heat source for regenerating the desiccant device. A high temperature heat source of the heat pump device is used for heating regeneration air and a low temperature heat source of the heat pump device is used for cooling the outdoor air.
Inventors
- 👤 Kensaku Maeda
- 👤 Tai Furuya
- 👤 Hiroyasu Nowatari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:31
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14; F24F3/1411; F24F3/1423; F24F5/00; F24F5/0007; F24F5/001; F24F2203/00; F24F2203/10; F24F2203/1016; F24F2203/1028; F24F2203/1032; F24F2203/104; F24F2203/1056; F24F2203/1072; F24F2203/1084
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
137 words
An air conditioning system comprising a first air conditioning unit for processing outdoor air and introducing processed outdoor air into indoors while discharging indoor air to outdoor; and a second air conditioning unit for processing indoor air while circulating said indoor air, said first air conditioning unit and said second air conditioning unit being provided with respective air passages independent from each other, wherein said first air conditioning unit comprises: a desiccant device for absorbing moisture from said outdoor air and being regenerated by said indoor air; and a heat pump device functioning as a heat source for regenerating said desiccant device; wherein a high temperature heat source of said heat pump device is used for heating regeneration air and a low temperature heat source of said heat pump device is used for cooling said outdoor air.
Claim 2
Dependent Claim
137 words
An air conditioning system comprising a first air conditioning unit for processing outdoor air and introducing processed outdoor air into indoors while discharging indoor air to outdoor; and a second air conditioning unit for processing indoor air while circulating said indoor air, said first air conditioning unit and said second air conditioning unit being provided with respective air passages independent from each other, wherein said first air conditioning unit comprises: a desiccant device for absorbing moisture from said outdoor air and being regenerated by said indoor air; and a heat pump device functioning as a heat source for regenerating said desiccant device; wherein a high temperature heat source of said heat pump device is used for heating regeneration air and a low temperature heat source of said heat pump device is used for cooling said outdoor air.
Claim 3
Dependent Claim
20 words
A system according to claim 1, wherein said heat exchanger transfers heat between post-desiccant outdoor air and pre-desiccant indoor air.
Claim 4
Dependent Claim
46 words
A system according to claim 1, wherein said system is further provided with a humidity sensor for detecting a humidity in a conditioning space and a control device for controlling an operation of said heat pump device in accordance with output data from said humidity sensor.
Claim 5
Dependent Claim
47 words
A system according to claim 3, wherein said system is further provided with a temperature sensor for detecting a temperature in a conditioning space and a control device for controlling an operation of said second air conditioning unit in accordance with output data from said temperature sensor.
Claim 6
Dependent Claim
29 words
A system according to claim 1, wherein said system is provided with a humidifier in a supply air passage from said first air conditioning unit to said conditioning space.
Claim 7
Dependent Claim
53 words
A system according to claim 5, wherein said system is provided with a control device for controlling the operation of at least one of said first air conditioning unit and said second air conditioning unit in accordance with output data from a humidity sensor and a temperature sensor provided in said conditioning space.
Claim 8
Dependent Claim
56 words
A system according to claim 6, wherein said control device is preloaded with a parametric representation of operating parameters including a temperature value and a humidity value so that said humidifier is activated when a detected temperature exceeds a preset upper threshold temperature and when a detected humidity is less than a preset lower threshold humidity.
Claim 9
Dependent Claim
21 words
A system according to claim 7, wherein said parametric representation is based on an indication of a wet bulb temperature sensor.
Claim 10
Dependent Claim
16 words
A system according to claim 6, wherein said temperature sensor is a dry bulb temperature sensor.
Claim 11
Dependent Claim
14 words
A system according to claim 6, wherein said humidity sensor is an absolute hygrometer.
Claim 12
Dependent Claim
15 words
A system according to claim 5, wherein said humidifier humidifies in substantially an isenthalpic process.
Claim 13
Dependent Claim
15 words
A system according to claim 5, wherein said humidifier is a water spraying type humidifier.
Claim 14
Dependent Claim
14 words
A system according to claim 5, wherein said humidifier is an evaporative type humidifier.
Claim 15
Dependent Claim
17 words
A system according to claim 1, wherein said heat pump device is an absorption type heat pump.
Claim 16
Dependent Claim
62 words
A system according to claim 1, wherein said air conditioning system is provided with a controller for controlling said system so that, when an excess capacity is available in said first air conditioning unit, said heat pump device in said first air conditioning unit is operated in an increasing mode and said second air conditioning unit is operated in a decreasing mode.
Claim 17
Dependent Claim
18 words
A system according to claim 1, wherein said heat pump device is a vapor compression type heat pump.
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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) | 2002-09-13 | 2003-03-15 | 2003-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-13 | 2007-03-15 | 2007-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-13 | 2011-03-15 | 2011-09-14 | $7700.00 | Window Closed / Lapsed |