Patent US3899022A successfully refreshed from Google Patents.
US3899022A
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Method and plant for regulating temperature by means of a subtempered air flow
Assignee: LUFTKONDITIONERING AB
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Filing: 1973-05-07
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Granted: 1975-08-12
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Expires: 1993-05-07
Abstract
Abstract A thermostat actuated regulating device for a subtempered air flow is made to be set automatically in one of two positions so as to let through to a room either a maximum or a minimum flow. When the heat emission is less than maximum but greater than minimum such a cyclical setting of the maximum and the minimum flow, respectively, is accomplished, that the total amount of air supplied during a period of time corresponds to actual cooling requirements. The let through maximum of minimum flow is supplied by an arbitrarily elaborated and/or placeable supply air device which cooperates or is provided with the regulating device for instance a damper. A separate heating unit belonging to the system is switched off at maximum flow and at minimum flow is switched on or off depending on the actual heat emission in the room.
Inventors
- 👤 Sixten Ismael Persson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:07
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F3/0442
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
190 words
In the known combination of a system for regulating the temperature in a room that has at least one inlet duct for the introduction of tempered air, a damper in at least one inlet duct, said damper being designed to regulate the quantity of tempered air introduced into said room, the improvement which comprises: a. each damper being mounted in the air duct with which it is associated so that the damper can only be disposed in two positions, said two positions consisting of a maximum air flow position and a minimum air flow position, b. motor means operatively associated with each damper for moving said damper back and forth between said maximum air flow position and said minimum air flow position, and c. temperature sensing means operatively connected to said motor means in such a way that a predetermined change in temperature of the air at a point downstream of the point where the air inlet duct enters the room will cause said motor means to move said damper to the other of its only two positions, and thus changing the flow rate of tempered air into the room.
Claim 2
Dependent Claim
190 words
In the known combination of a system for regulating the temperature in a room that has at least one inlet duct for the introduction of tempered air, a damper in at least one inlet duct, said damper being designed to regulate the quantity of tempered air introduced into said room, the improvement which comprises: a. each damper being mounted in the air duct with which it is associated so that the damper can only be disposed in two positions, said two positions consisting of a maximum air flow position and a minimum air flow position, b. motor means operatively associated with each damper for moving said damper back and forth between said maximum air flow position and said minimum air flow position, and c. temperature sensing means operatively connected to said motor means in such a way that a predetermined change in temperature of the air at a point downstream of the point where the air inlet duct enters the room will cause said motor means to move said damper to the other of its only two positions, and thus changing the flow rate of tempered air into the room.
Claim 3
Dependent Claim
233 words
In the known combination of a system for regulating the temperature in a room that has at least one inlet duct for the introduction of tempered air, a damper in at least one inlet duct, said damper being designed to regulate the quantity of tempered air introduced into said room, the improvement which comprises: a. each damper being mounted in the air duct with which it is associated so that the damper can only be disposed in two positions, said two positions consisting of a maximum air flow position and a minimum air flow position, b. motor means operatively associated with each damper for moving said damper back and forth between said maximum air flow position and said minimum air flow position, c. temperature sensing means operatively connected to said motor means in such a way that a predetermined change in temperature of the air at a point downstream of the point where the air inlet duct enters the room will cause said motor means to move said damper to the other of its only two positions, and thus changing the flow rate of tempered air into the room, and d. at least one heating unit which is operatively connected to said thermostat in such a way that the heating unit is energized when said damper is in its minimum flow position and deenergized when said damper is in its maximum flow position.
Claim 4
Dependent Claim
233 words
In the known combination of a system for regulating the temperature in a room that has at least one inlet duct for the introduction of tempered air, a damper in at least one inlet duct, said damper being designed to regulate the quantity of tempered air introduced into said room, the improvement which comprises: a. each damper being mounted in the air duct with which it is associated so that the damper can only be disposed in two positions, said two positions consisting of a maximum air flow position and a minimum air flow position, b. motor means operatively associated with each damper for moving said damper back and forth between said maximum air flow position and said minimum air flow position, c. temperature sensing means operatively connected to said motor means in such a way that a predetermined change in temperature of the air at a point downstream of the point where the air inlet duct enters the room will cause said motor means to move said damper to the other of its only two positions, and thus changing the flow rate of tempered air into the room, and d. at least one heating unit which is operatively connected to said thermostat in such a way that the heating unit is energized when said damper is in its minimum flow position and deenergized when said damper is in its maximum flow position.
References Cited (Backward Citations)
US2072166A
Cited
US2188775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |