US4373576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating, ventilating and air conditioning system with reversible air flow
Assignee: Individual
•
Filing: 1981-01-08
•
Granted: 1983-02-15
•
Expires: 2001-01-08
Abstract
Abstract An air supply and return system for heating and cooling a room, including an air flow loop having a first set of openings positioned high in a wall of the room (high vents) and a second set of openings positioned low in a wall of the room (low vents). The air flow loop includes a reversible air moving device, heating and cooling coils, and ducts connecting the reversible air moving device, filters, and the heating and cooling coils to the high vents and the low vents. During the cooling cycle, air is withdrawn from the room through the low vents, circulated with high air flow by the air mover through the ducts, filter, and the cooling coils, and discharged to the room from the high vents. During the heating cycle the air mover, and thereby the direction of air flow within the duct system, is reversed. Heating operation is in two stages: a passive heating stage with low air flow during which warm, stratified air from the upper portion of the room is withdrawn therefrom through the high vents and circulated unheated through the duct system and discharged to the lower part of the room through the low vents, thereby minimizing stratification within the room; and an active heating stage with higher air flow during which the air withdrawn from the room through the high vents is heated and returned to the room through the low vents.
Inventors
- 👤 Kenneth Strupczewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:05
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F11/00; F24F11/30; F24F11/70; F24F11/80; F24F11/81; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1912; G05D23/275; Y; Y10; Y10S; Y10S236/00; Y10S236/09
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
A temperature conditioning system for a room having a heating mode and a cooling mode, comprising first vent means positioned high in the room for delivering cooled air to the room; second vent means positioned low in the room for delivering heated air to the room; duct means for conveying air, connecting first and second vent means cooling means, and heating means for temperature conditioning the air flowing in the duct means non-reversible fan means for causing air to flow unidirectionally in sequence through the cooling means and heating means, and reversible damper means for causing the air to flow through the duct means from first vent means to second vent means during heating and from second vent means to first vent means during cooling.
Claim 2
Dependent Claim
125 words
A temperature conditioning system for a room having a heating mode and a cooling mode, comprising first vent means positioned high in the room for delivering cooled air to the room; second vent means positioned low in the room for delivering heated air to the room; duct means for conveying air, connecting first and second vent means cooling means, and heating means for temperature conditioning the air flowing in the duct means non-reversible fan means for causing air to flow unidirectionally in sequence through the cooling means and heating means, and reversible damper means for causing the air to flow through the duct means from first vent means to second vent means during heating and from second vent means to first vent means during cooling.
Claim 3
Dependent Claim
141 words
A temperature conditioning system for a room having a heating mode and a cooling mode, comprising first vent means positioned high in the room for delivering cooled air to the room; second vent means positioned low in the room for delivering heated air to the room; duct means for conveying air, connecting first and second vent means; cooling means; first non-reversible fan means for moving air from the low vent through the cooling means to the high vent; heating means; second non-reversible fan means for moving air from the high vent through the heating means to the low vent; and reversible damper means for allowing air movement by first fan means and preventing air movement by second fan means in cooling mode and preventing air movement by first fan means and allowing air movement by second fan means in heating mode.
Claim 4
Dependent Claim
141 words
A temperature conditioning system for a room having a heating mode and a cooling mode, comprising first vent means positioned high in the room for delivering cooled air to the room; second vent means positioned low in the room for delivering heated air to the room; duct means for conveying air, connecting first and second vent means; cooling means; first non-reversible fan means for moving air from the low vent through the cooling means to the high vent; heating means; second non-reversible fan means for moving air from the high vent through the heating means to the low vent; and reversible damper means for allowing air movement by first fan means and preventing air movement by second fan means in cooling mode and preventing air movement by first fan means and allowing air movement by second fan means in heating mode.
Claim 5
Dependent Claim
133 words
A heating and cooling system for a room comprising first vent means positioned high in the room for delivering cooled air to the room second vent means positioned low in the room for delivering heated air to the room duct means for conveying air connecting first and second vent means cooling means and heating means having ON and OFF conditions for alternately cooling and actively and passively heating the room means for causing the air to flow from the second vent to the first vent at highest velocity while cooling, and means for causing the air to flow from the first vent to the second vent at lesser velocity while actively heating, and means for causing the air to flow from the first vent to the second at least velocity while passively heating.
Claim 6
Dependent Claim
133 words
A heating and cooling system for a room comprising first vent means positioned high in the room for delivering cooled air to the room second vent means positioned low in the room for delivering heated air to the room duct means for conveying air connecting first and second vent means cooling means and heating means having ON and OFF conditions for alternately cooling and actively and passively heating the room means for causing the air to flow from the second vent to the first vent at highest velocity while cooling, and means for causing the air to flow from the first vent to the second vent at lesser velocity while actively heating, and means for causing the air to flow from the first vent to the second at least velocity while passively heating.
Claim 7
Dependent Claim
33 words
A system as in claim 3 where the means for causing the air to flow from first vent to second vent and from second vent to first vent is a reversible rotation fan.
Claim 8
Dependent Claim
24 words
A system as in claim 4 where the fan characteristics cause it to deliver more air in one direction of rotation than the other.
Claim 9
Dependent Claim
122 words
A heating and cooling system for a room comprising first vent means positioned high in the room for delivering cooled air to the room; second vent means positioned low in the room for delivering heated air to the room; duct means for conveying air connecting first and second vent means; cooling means and heating means for alternately cooling and heating the room; reversible rotation fan means for delivering more air when blowing in one direction than the other, said fan means constituting means for causing the air to flow from the second vent to the first vent at higher velocity while cooling, and for causing the air to flow from the first vent to the second vent at lesser velocity while heating.
Claim 10
Dependent Claim
122 words
A heating and cooling system for a room comprising first vent means positioned high in the room for delivering cooled air to the room; second vent means positioned low in the room for delivering heated air to the room; duct means for conveying air connecting first and second vent means; cooling means and heating means for alternately cooling and heating the room; reversible rotation fan means for delivering more air when blowing in one direction than the other, said fan means constituting means for causing the air to flow from the second vent to the first vent at higher velocity while cooling, and for causing the air to flow from the first vent to the second vent at lesser velocity while heating.
References Cited (Backward Citations)
US2139262A
Cited
US2463322A
Cited
US2550754A
Cited
DE853202C
Cited
GB999317A
Cited
US3653431A
Cited
US3749157A
Cited
US4076074A
Cited
US4271898A
Cited
US4267967A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-02-14 | 1986-08-16 | 1987-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-14 | 1990-08-16 | 1991-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-14 | 1994-08-16 | 1995-02-15 | $7700.00 | Window Closed / Lapsed |