CA1090190A - Air circulator - Google Patents
Air circulatorInfo
- Publication number
- CA1090190A CA1090190A CA293,018A CA293018A CA1090190A CA 1090190 A CA1090190 A CA 1090190A CA 293018 A CA293018 A CA 293018A CA 1090190 A CA1090190 A CA 1090190A
- Authority
- CA
- Canada
- Prior art keywords
- duct
- air
- air circulator
- room
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
- Duct Arrangements (AREA)
Abstract
AIR CIRCULATOR
ABSTRACT
An air circulating device for suspension from a roof or ceiling structure and including a duct through which upper room air may be directed for discharge into lower temperature air immediately above the room floor. A support structure houses a fan and motor assembly and a duct mounting collar to receive the duct upper end. The duct is of an inflatable, yieldable nature and terminates in spaced relationship to the floor.
ABSTRACT
An air circulating device for suspension from a roof or ceiling structure and including a duct through which upper room air may be directed for discharge into lower temperature air immediately above the room floor. A support structure houses a fan and motor assembly and a duct mounting collar to receive the duct upper end. The duct is of an inflatable, yieldable nature and terminates in spaced relationship to the floor.
Description
l~Ul~O
Specification The present invention relates generally to that class of devices for generating a circulatory flow of air within a room or closed area of a building struc-ture and particularly to such a device having an up-right air duct.
Warmer air naturally rises toward the ceiling resulting in thermal stratification of room air with higher air temperatures occurring in the upper area of a room while the lower area, the habitable space of the room, is several degrees cooler. The temperature differ-ential depends on a variety of factors. Accordingly, fuel consumption may be reduced if the warmer, upper room air is circulated to mix with the colder, lower room air. Additionally, undesired heat loss through the ceiling or roof is directly proportional to the temper-ature of upper room air.
According to the present invention there is pro-vided an air circulator having a depending duct adapted for suspension from a ceiling or roof structure of a home or building.
The suspended d`udtis of a yieldable nature and serves to discharge warm air downwardly into normally the lowest temperature strata of a room i.e, that area immediately above the floor. The colder dense air at floor level is accordingly infused with warmer air from the ceiling area with the volume and temperature of "floor" air thereby increased resulting in an unstable ~090190 condition and upward currents of slightly warmed air. Such air circulation significantly reduces the temperature gradients between floor and ceiling air layers and permits the habitable area of a building to benefit from dormant, higher temperature air normally subjacent the ceiling.
In accordance with the present invention there is provided an air circulator for circulating heated convective air for attachment to a roof or ceiling structure of a room, said air circulator comprising, a duct suspended from its upper end and discharging an airflow towards the floor area of the room, a fan and motor assembly, a support structure including a base to which said fan and motor assembly is attached, hanger means suspending the support structure from an overhead structure, said support additionally including mounting means partially enclosed by said base and to which the upper end of said duct is attached whereby the duct is in axial relationship with the fan of the fan and motor assembly, said base having a lowermost outer portion out-wardly offset from said mounting means and the upper end of said duct, and said base receiving a fan induced flow of heated convective air from that area of the room subjacent the roof or ceiling structure for subsequent downward flow into the duct upper end and passage via said duct and discharge into an area superjacent the floor of the room to heat the latter area.
The invention will be further illustrated by way of example with reference to the accompanying drawing ~, . .
1~9(~1~0 in which:
Fig. 1 is a side elevational view of the present air circulator operatively disposed within a building structure;
Fig. 2 is an enlarged elevational view of the upper end of the air circulator with fragments broken away for purposes of illustration;
Fig. 3 is a horizontal section taken generally along line 3-3 of Fig. 2;
Fig. 4 is an elevational view of the lower end of the air circulator duct; and Fig. 5 is an elevational view of a segment of a modified duct.
With continuing reference to the accompanying draw-ing wherein applied reference numerals indicate parts similarly identified with the following descriptions, the reference numeral 1 indicates a building roof struc-ture from which the present circulator may be suspended.
The term roof structure is, for present purposes, synon-ymous with ceiling as both define generally the upper limit of a room or building space.
The present air circulator is indicated generally at 2 and includes a duct 3 which serves to direct an airflow into that area of a room immediately above a floor surface F. Duct 3 is preferably of a length so as to have its upper and lower ends at 3A and 3B offset approximately one foot from adjacent roof and floor surfaces to assure optimum air circulation. Obviously duct length may be readily altered to suit the specific height of the room or building structure. In a preferred embodiment, duct 3 is of heavy duty, tubular plastic film of a suitable gauge collapsible upon momentary impact.
Disposed within the lower end 3B of the duct is a rigid ring member 4 which provides desired mass to the duct lower end as well serving to somewhat restrict duct air-flow imparting an inflated circular shape to the duct.
In some installations, a rigid walled duct may be entire-ly satisfactory.
Indicated generally at 5 is a support structure of the air circulator including a base 6 which may be of molded dome-like construction and, into the lower portion of which, ceiling air is drawn. Hanger means at 7 enables convenient, horizontal suspension of base 6 from a single roof or ceiling attachment point. Accordingly, the entire air circulator may move in pendulum fashion if accidentally contacted by a person or moving equipment.
Mounted on base 6 is a motor and fan assembly at 8 secured by a pair of fastener assemblies, as at 9, extending upwardly through said base. The support structure includes mounting means in the form of a collar 10 with spacers at 11 serving to locate the collar in coaxial relationship with and about fan blade 12. Duct 3 is suit-ably attached to collar 10 as by a strip of pressure sensi-tive tape 17. Fasteners 13 serve to retain the spacers and collar in place and additionally to attach the attach-ment chains 7 to base 6. A powersupply cord is indicated at 16.
For purposes of assuring an open cylindrical duct 3, the ring member 4 restricts, to a slight degree, the duct discharge thereby assuring a duct internal pressure exceeding that air pressure acting on the duct exterior.
A modified duct at 14 includes an outer layer of insulation at 15 which inhibits radiant heat loss from the duct and is particularly desirable where radical ceiling-floor temperature gradients exist.
The operation of the air circulator is believed readily apparent from the foregoing description. The duct length may be altered simply by cutting same to provide the desired spacing from ceiling and floor surfaces with ring 4 being reinstalled in the duct lower end with an adhesive or tape as at 18.
_ 5_
Specification The present invention relates generally to that class of devices for generating a circulatory flow of air within a room or closed area of a building struc-ture and particularly to such a device having an up-right air duct.
Warmer air naturally rises toward the ceiling resulting in thermal stratification of room air with higher air temperatures occurring in the upper area of a room while the lower area, the habitable space of the room, is several degrees cooler. The temperature differ-ential depends on a variety of factors. Accordingly, fuel consumption may be reduced if the warmer, upper room air is circulated to mix with the colder, lower room air. Additionally, undesired heat loss through the ceiling or roof is directly proportional to the temper-ature of upper room air.
According to the present invention there is pro-vided an air circulator having a depending duct adapted for suspension from a ceiling or roof structure of a home or building.
The suspended d`udtis of a yieldable nature and serves to discharge warm air downwardly into normally the lowest temperature strata of a room i.e, that area immediately above the floor. The colder dense air at floor level is accordingly infused with warmer air from the ceiling area with the volume and temperature of "floor" air thereby increased resulting in an unstable ~090190 condition and upward currents of slightly warmed air. Such air circulation significantly reduces the temperature gradients between floor and ceiling air layers and permits the habitable area of a building to benefit from dormant, higher temperature air normally subjacent the ceiling.
In accordance with the present invention there is provided an air circulator for circulating heated convective air for attachment to a roof or ceiling structure of a room, said air circulator comprising, a duct suspended from its upper end and discharging an airflow towards the floor area of the room, a fan and motor assembly, a support structure including a base to which said fan and motor assembly is attached, hanger means suspending the support structure from an overhead structure, said support additionally including mounting means partially enclosed by said base and to which the upper end of said duct is attached whereby the duct is in axial relationship with the fan of the fan and motor assembly, said base having a lowermost outer portion out-wardly offset from said mounting means and the upper end of said duct, and said base receiving a fan induced flow of heated convective air from that area of the room subjacent the roof or ceiling structure for subsequent downward flow into the duct upper end and passage via said duct and discharge into an area superjacent the floor of the room to heat the latter area.
The invention will be further illustrated by way of example with reference to the accompanying drawing ~, . .
1~9(~1~0 in which:
Fig. 1 is a side elevational view of the present air circulator operatively disposed within a building structure;
Fig. 2 is an enlarged elevational view of the upper end of the air circulator with fragments broken away for purposes of illustration;
Fig. 3 is a horizontal section taken generally along line 3-3 of Fig. 2;
Fig. 4 is an elevational view of the lower end of the air circulator duct; and Fig. 5 is an elevational view of a segment of a modified duct.
With continuing reference to the accompanying draw-ing wherein applied reference numerals indicate parts similarly identified with the following descriptions, the reference numeral 1 indicates a building roof struc-ture from which the present circulator may be suspended.
The term roof structure is, for present purposes, synon-ymous with ceiling as both define generally the upper limit of a room or building space.
The present air circulator is indicated generally at 2 and includes a duct 3 which serves to direct an airflow into that area of a room immediately above a floor surface F. Duct 3 is preferably of a length so as to have its upper and lower ends at 3A and 3B offset approximately one foot from adjacent roof and floor surfaces to assure optimum air circulation. Obviously duct length may be readily altered to suit the specific height of the room or building structure. In a preferred embodiment, duct 3 is of heavy duty, tubular plastic film of a suitable gauge collapsible upon momentary impact.
Disposed within the lower end 3B of the duct is a rigid ring member 4 which provides desired mass to the duct lower end as well serving to somewhat restrict duct air-flow imparting an inflated circular shape to the duct.
In some installations, a rigid walled duct may be entire-ly satisfactory.
Indicated generally at 5 is a support structure of the air circulator including a base 6 which may be of molded dome-like construction and, into the lower portion of which, ceiling air is drawn. Hanger means at 7 enables convenient, horizontal suspension of base 6 from a single roof or ceiling attachment point. Accordingly, the entire air circulator may move in pendulum fashion if accidentally contacted by a person or moving equipment.
Mounted on base 6 is a motor and fan assembly at 8 secured by a pair of fastener assemblies, as at 9, extending upwardly through said base. The support structure includes mounting means in the form of a collar 10 with spacers at 11 serving to locate the collar in coaxial relationship with and about fan blade 12. Duct 3 is suit-ably attached to collar 10 as by a strip of pressure sensi-tive tape 17. Fasteners 13 serve to retain the spacers and collar in place and additionally to attach the attach-ment chains 7 to base 6. A powersupply cord is indicated at 16.
For purposes of assuring an open cylindrical duct 3, the ring member 4 restricts, to a slight degree, the duct discharge thereby assuring a duct internal pressure exceeding that air pressure acting on the duct exterior.
A modified duct at 14 includes an outer layer of insulation at 15 which inhibits radiant heat loss from the duct and is particularly desirable where radical ceiling-floor temperature gradients exist.
The operation of the air circulator is believed readily apparent from the foregoing description. The duct length may be altered simply by cutting same to provide the desired spacing from ceiling and floor surfaces with ring 4 being reinstalled in the duct lower end with an adhesive or tape as at 18.
_ 5_
Claims
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
An air circulator for circulating heated convective air for attachment to a roof or ceiling structure of a room, said air circulator comprising, a duct suspended from its upper end and discharging an airflow towards the floor area of the room, a fan and motor assembly, a support structure including a base to which said fan and motor assembly is attached, hanger means suspending the support structure from an overhead structure, said support structure additionally including mounting means partially enclosed by said base and to which the upper end of said duct is attached whereby the duct is in axial relationship with the fan of the fan and motor assembly, said base having a lowermost outer portion outwardly offset from said mounting means and the upper end of said duct, and said base receiving a fan induced flow of heated convective air from that area of the room subjacent the roof or ceiling structure for subsequent downward flow into the duct upper end and passage via said duct and discharge into an area superjacent the floor of the room to heat the latter area.
The air circulator as claimed in claim 1 wherein said duct is formed from pliable film material, said duct additionally including a ring at its lower end serving as an airflow restriction.
The air circulator claimed in claim 1 wherein said hanger means is of the non-rigid bridle type permitting momentary pendulous displacement of said support structure upon impact thereagainst of a moving object.
The air circulator as claimed in claim 3 wherein said hanger means includes a single flexible member for attachment at its upper end to a roof or ceiling component to facilitate pendulous movement of the air circulator when impacted by a moving object.
The air circulator as claimed in claim 1 wherein said duct includes an external thermal insulation layer.
An air circulator for circulating heated convective air for attachment to a roof or ceiling structure of a room, said air circulator comprising, a duct suspended from its upper end and discharging an airflow towards the floor area of the room, a fan and motor assembly, a support structure including a base to which said fan and motor assembly is attached, hanger means suspending the support structure from an overhead structure, said support structure additionally including mounting means partially enclosed by said base and to which the upper end of said duct is attached whereby the duct is in axial relationship with the fan of the fan and motor assembly, said base having a lowermost outer portion outwardly offset from said mounting means and the upper end of said duct, and said base receiving a fan induced flow of heated convective air from that area of the room subjacent the roof or ceiling structure for subsequent downward flow into the duct upper end and passage via said duct and discharge into an area superjacent the floor of the room to heat the latter area.
The air circulator as claimed in claim 1 wherein said duct is formed from pliable film material, said duct additionally including a ring at its lower end serving as an airflow restriction.
The air circulator claimed in claim 1 wherein said hanger means is of the non-rigid bridle type permitting momentary pendulous displacement of said support structure upon impact thereagainst of a moving object.
The air circulator as claimed in claim 3 wherein said hanger means includes a single flexible member for attachment at its upper end to a roof or ceiling component to facilitate pendulous movement of the air circulator when impacted by a moving object.
The air circulator as claimed in claim 1 wherein said duct includes an external thermal insulation layer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US75789877A | 1977-01-10 | 1977-01-10 | |
| US757,898 | 1977-01-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1090190A true CA1090190A (en) | 1980-11-25 |
Family
ID=25049683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA293,018A Expired CA1090190A (en) | 1977-01-10 | 1977-12-09 | Air circulator |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5387547A (en) |
| CA (1) | CA1090190A (en) |
| DE (1) | DE2800024C2 (en) |
| GB (1) | GB1548773A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5564980A (en) * | 1995-02-09 | 1996-10-15 | Becker; Sydney J. | Room air quality conditioning system |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2486211A1 (en) * | 1980-07-01 | 1982-01-08 | Lambert Francois | Hot air redistribution system for room - uses fan in vertical channel against wall to oppose natural convection and create more uniform temp. distribution |
| NZ201460A (en) * | 1981-08-17 | 1986-11-12 | Allware Agencies Ltd | Multipurpose microprocessor controlled heating and cooling fan |
| US4522255A (en) * | 1982-08-05 | 1985-06-11 | Baker Gary C | Spot thermal or environmental conditioner |
| DE3430031A1 (en) * | 1984-08-16 | 1986-02-20 | Gas & Wasserleitungsgeschäft Böhm, Hörle, Schuster & Cie (GmbH & Co), 7000 Stuttgart | Device for equalising the temperature distribution in rooms |
| GB8622568D0 (en) * | 1986-09-19 | 1986-10-22 | Davis M J W | Control of atmosphere |
| GB2202322A (en) * | 1986-11-14 | 1988-09-21 | George Alfred Forbes | Hot air recirculation system |
| GB2255172A (en) * | 1991-04-25 | 1992-10-28 | Malcolm Dickinson | Room air recirculation system |
| GB2285504A (en) * | 1993-12-09 | 1995-07-12 | Alfred Slack | Hot air distribution |
| JP5748379B1 (en) * | 2014-09-18 | 2015-07-15 | フルタ電機株式会社 | Cover and air supply structure |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD70368A (en) * | ||||
| DE7235583U (en) * | 1972-09-27 | 1976-03-11 | Diepenbrock, Leonard, 2000 Hamburg | AIR OUTLET AND GUIDE DEVICE AS ADDITIONAL DEVICE TO HEATING AND COOLING FANS |
| FR2296818A1 (en) * | 1974-12-30 | 1976-07-30 | Vincent Michel | Air distributing column for living room - is hollow with fan giving downdraught |
-
1977
- 1977-11-23 GB GB4869977A patent/GB1548773A/en not_active Expired
- 1977-12-09 CA CA293,018A patent/CA1090190A/en not_active Expired
-
1978
- 1978-01-02 DE DE19782800024 patent/DE2800024C2/en not_active Expired
- 1978-01-10 JP JP147378A patent/JPS5387547A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5564980A (en) * | 1995-02-09 | 1996-10-15 | Becker; Sydney J. | Room air quality conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5387547A (en) | 1978-08-02 |
| GB1548773A (en) | 1979-07-18 |
| DE2800024C2 (en) | 1983-02-03 |
| DE2800024A1 (en) | 1978-07-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |