US4649710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating an air conditioner
Assignee: Trinity Industrial Corp
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Filing: 1985-12-05
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Granted: 1987-03-17
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Expires: 2005-12-05
Abstract
Abstract In a method of operating an air conditioner for supplying an air from the air conditioner to the inside of a chamber, the temperature of the air supplied to the inside of the chamber upon starting the operation of the air conditioner is increased to an aimed temperature while maintaining the supplied air temperature higher than the temperature at the surfaces of the inner wall of the chamber and/or the equipments installed therein but lower than the temperature the dew point for which is lower than the surface temperature, whereby the moistures contained in the air supplied from the air conditioner is prevented from condensating to form water droplets on the inner wall of the chamber and/or the equipments installed therein. The inside of the chamber can be controlled to an aimed air-conditioned state rapidly without causing undesired dewing phenomenon even during winter or like other cold conditions.
Inventors
- 👤 Hidemasa Inoue
- 👤 Hisashi Taniguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:02
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/32; F24F2110/00; F24F2110/10; F24F2110/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
151 words
A method of operating an air conditioner for supplying air from the air conditioner to the inside of a chamber, comprising the steps of: supplying air to the inside of the chamber; calculating a temperature of dew point for a surface within said chamber; and increasing a temperature of the air supplied to the inside of the chamber to an aimed temperature upon starting an operation of the air conditioner, while maintaining said supplied air temperature: (a) higher than a chamber temperature, which is a temperature at one of: (1) the surfaces of the inner wall of the chamber and (2) the equipment installed therein, (b) lower than said temperature of dew point, and (c) so that said temperature of dew point is lower than said chamber temperature, whereby the moisture contained in the air supplied from the air conditioner is prevented from condensating to form water droplets in said chamber.
Claim 2
Independent Claim
151 words
A method of operating an air conditioner for supplying air from the air conditioner to the inside of a chamber, comprising the steps of: supplying air to the inside of the chamber; calculating a temperature of dew point for a surface within said chamber; and increasing a temperature of the air supplied to the inside of the chamber to an aimed temperature upon starting an operation of the air conditioner, while maintaining said supplied air temperature: (a) higher than a chamber temperature, which is a temperature at one of: (1) the surfaces of the inner wall of the chamber and (2) the equipment installed therein, (b) lower than said temperature of dew point, and (c) so that said temperature of dew point is lower than said chamber temperature, whereby the moisture contained in the air supplied from the air conditioner is prevented from condensating to form water droplets in said chamber.
Claim 3
Dependent Claim
94 words
A method as in claim 1 comprising the further steps of: increasing the temperature of the air supplied to the inside of the chamber upon starting the operation of the air conditioner to an aimed temperature while maintaining the supplied air temperature higher than the chamber temperature but lower than a temperature, the dew point for which is lower than the surface temperature; and operating a humidity controller when the supplied air temperature and the surface temperature become substantially identical with each other to humidify the air supplied to the inside of the chamber.
Claim 4
Independent Claim
188 words
A method of operating an air conditioner for supplying air from the air conditioner to the inside of a chamber, comprising the steps of: detecting a temperature and a moisture content of the air upon initiating an operation of the air conditioner; continuously calculating the dew point of the air as it is supplied to the inside of the chamber; detecting a change in a chamber temperature at surfaces of at least one of an inner wall of the chamber and equipment installed in said chamber; and increasing the temperature inside said chamber to a predetermined temperature while maintaining the temperature of said air supplied from said air conditioner to the inside of said chamber such that a dew point of the supplied air is lower than the chamber temperature, while maintaining the temperature of the supplied air to be higher than the chamber temperature, thereby preventing the moisture contained in the air supplied from the air conditioner to said chamber from forming water droplets by condensation at said surfaces of at least one of the inner wall of the chamber and the equipment installed in said chamber.
Claim 5
Independent Claim
188 words
A method of operating an air conditioner for supplying air from the air conditioner to the inside of a chamber, comprising the steps of: detecting a temperature and a moisture content of the air upon initiating an operation of the air conditioner; continuously calculating the dew point of the air as it is supplied to the inside of the chamber; detecting a change in a chamber temperature at surfaces of at least one of an inner wall of the chamber and equipment installed in said chamber; and increasing the temperature inside said chamber to a predetermined temperature while maintaining the temperature of said air supplied from said air conditioner to the inside of said chamber such that a dew point of the supplied air is lower than the chamber temperature, while maintaining the temperature of the supplied air to be higher than the chamber temperature, thereby preventing the moisture contained in the air supplied from the air conditioner to said chamber from forming water droplets by condensation at said surfaces of at least one of the inner wall of the chamber and the equipment installed in said chamber.
Claim 6
Dependent Claim
45 words
A method as in claim 3, comprising the further step of moistening the air supplied to the inside of said chamber by starting a humidifying operation of said air conditioner when the temperature of said air becomes substantially equal to a temperature at said surfaces.
Claim 7
Independent Claim
67 words
A method of operating an air conditioner to condition the air in a cooled area, comprising the steps of: detecting a temperature and humidity of a surface within the cooled area; determining a range of temperatures of air to be supplied to said areas which will not cause dew to be produced on at least one of said surfaces; and supplying air within said range of temperatures.
Claim 8
Independent Claim
67 words
A method of operating an air conditioner to condition the air in a cooled area, comprising the steps of: detecting a temperature and humidity of a surface within the cooled area; determining a range of temperatures of air to be supplied to said areas which will not cause dew to be produced on at least one of said surfaces; and supplying air within said range of temperatures.
Claim 9
Dependent Claim
59 words
A method as in claim 5 wherein said determining step includes the further steps of: calculating a dew point temperature corresponding to a dew point of said surface within said cooled area; and determining a range of temperatures in which said dew point is lower than said surface temperature and in which dewing will not occur on said surface.
Claim 10
Dependent Claim
19 words
A method as in claim 6 wherein air is supplied at substantially a highest possible temperature within said range.
Claim 11
Independent Claim
67 words
An apparatus for operating an air conditioner to condition air in a cooled area, comprising: means for detecting a temperature and humidity of a surface within the cooled area; means for determining a range of temperatures of air to be supplied to said areas which will not cause dew to be produced on one of said surfaces; and means for supplying air within said range of temperatures.
Claim 12
Independent Claim
67 words
An apparatus for operating an air conditioner to condition air in a cooled area, comprising: means for detecting a temperature and humidity of a surface within the cooled area; means for determining a range of temperatures of air to be supplied to said areas which will not cause dew to be produced on one of said surfaces; and means for supplying air within said range of temperatures.
Claim 13
Dependent Claim
59 words
An apparatus as in claim 8 wherein said determining means includes: means for calculating a dew point temperature corresponding to a dew point of said surface within said cooled area; and means for determining a range of temperatures in which said dew point is lower than said surface temperature and in which dewing will not occur on said surface.
Claim 14
Dependent Claim
19 words
An apparatus as in claim 9 wherein air is supplied at substantially a highest possible temperature within said range.
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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) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |