EP0207718A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Zoned air conditioning system
Assignee: Atlas Air Australia Pty Ltd
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Filing: 1986-06-24
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Granted: —
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Expires: 2006-06-24
Abstract
Abstract O A zoned air conditioning system using a room airterminal which has the same horizontal dimensions as a floor tile of a raised tile floor such that the terminal may replace one tile in such a floor. The terminal includes a cool air inlet below the floor for drawing in cooling air circulated in the under floor space and a return air inlet in the top surface of the terminal. The cool air and return air is mixed in a mixing chamber and drawn from the mixing chamber by a fan and returned to the room through an outlet vent The ratio of cool air to return air mixed in the mixing chamber is controlled by a modulating damper which is controlled in response to the temperature of the return air in order to control the room temperature in the region of the terminal in accordance with an adjustable set point. A heater is also provided in the terminal for those occasions where the return air is cooler than the set point.
Inventors
- 👤 Colin W. Ward
- 👤 Norman Stoliar
- 👤 Lewis Marton
- 👤 Geoffrey Noel Beeche
- 👤 Leslie Phipps
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 13:15
CPC Classifications
F; F24; F24F; F24F3/00; F24F7/00; F24F7/04; F24F7/06; F24F7/10; F24F2221/00; F24F2221/40
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
162 words
An air circulating terminal for a zone air conditioning system, said terminal comprising: mounting means adapted to be mounted in an opening of a barrier between a cooling air distribution plenum and a space to be serviced by the air conditioning system; an inlet chamber having a first inlet opening into said space to be serviced and a second inlet opening into said plenum; an outlet chamber opening into the space to be serviced; fan means located between said inlet chamber and said outlet chamber to propel air from said inlet chamber into said outlet chamber; proportioning means for controlling the proportion of air flowing into the inlet chamber from said first inlet and said second inlet respectively; temperature sensing means for sensing the temperature of air entering said first inlet; and modulating means for modulating said proportioning means in accordance with the temperature of air entering said first inlet to control the temperature of the air propelled to the outlet chamber.
Claim 2
Dependent Claim
162 words
An air circulating terminal for a zone air conditioning system, said terminal comprising: mounting means adapted to be mounted in an opening of a barrier between a cooling air distribution plenum and a space to be serviced by the air conditioning system; an inlet chamber having a first inlet opening into said space to be serviced and a second inlet opening into said plenum; an outlet chamber opening into the space to be serviced; fan means located between said inlet chamber and said outlet chamber to propel air from said inlet chamber into said outlet chamber; proportioning means for controlling the proportion of air flowing into the inlet chamber from said first inlet and said second inlet respectively; temperature sensing means for sensing the temperature of air entering said first inlet; and modulating means for modulating said proportioning means in accordance with the temperature of air entering said first inlet to control the temperature of the air propelled to the outlet chamber.
Claim 3
Dependent Claim
59 words
The air circulating terminal of claim 1, in which heating means are provided to operate in response to the temperature sensing means to heat the air flowing through the terminal when the temperature of the air flowing through the first inlet is below a predetermined level and the proportioning means is completely blocking air flow through the second inlet.
Claim 4
Dependent Claim
70 words
The air circulating terminal of claim 1 or 2, wherein the terminal is adapted to be mounted in a raised floor with the space under the floor forming the plenum, the first inlet and the outlet being provided through respective grills in the upper surface of the terminal and the second inlet being provided through an opening located below the level of the raised floor to communicate with the plenum.
Claim 5
Dependent Claim
22 words
The air circulating terminal of claim 1, 2 or 3, wherein the proportioning means is a damper positioned by a modulating drive.
Claim 6
Independent Claim
114 words
A method of conditioning air in an air conditioned space, comprising the steps of: supplying a flow of cooling air into a plenum separated from the air conditioned space by a barrier; drawing air from said plenum into a mixing chamber; and at the same time drawing air from the air conditioned space into said mixing chamber and returning the air mixed in said mixing chamber to the air conditioned space, wherein the temperature of the air returned to the air conditioned space is controlled by measuring the temperature of the air drawn from the air conditioned space and modulating the proportion of air drawn from the plenum in response to the measured temperature.
Claim 7
Independent Claim
114 words
A method of conditioning air in an air conditioned space, comprising the steps of: supplying a flow of cooling air into a plenum separated from the air conditioned space by a barrier; drawing air from said plenum into a mixing chamber; and at the same time drawing air from the air conditioned space into said mixing chamber and returning the air mixed in said mixing chamber to the air conditioned space, wherein the temperature of the air returned to the air conditioned space is controlled by measuring the temperature of the air drawn from the air conditioned space and modulating the proportion of air drawn from the plenum in response to the measured temperature.
Claim 8
Dependent Claim
46 words
The method of claim 5, wherein the proportion of air drawn from the air conditioned space to that drawn from the plenum is controlled by a damper, the position of which is modulated in response to the temperature of the air drawn from the conditioned space.
Claim 9
Dependent Claim
44 words
The method of claim 5 or 6 wherein the air in the mixing chamber is heated by an auxillary heater when the air drawn from the conditioned space is below a predetermined temperature and the damper is fully blocking air flow from the plenum.
Claim 10
Dependent Claim
27 words
The method of claim 5, 6 or 7, wherein air is drawn into the mixing chamber by a fan located at an outlet of the mixing chamber.
Claim 11
Dependent Claim
34 words
The method of claim 5, 6, 7 or 8, including the step of delivering a second stream of cooling air from the plenum to the conditioned space through a duct provided with a fan.
Claim 12
Dependent Claim
28 words
The method of claim 9, wherein the second stream of cooling air has a flow rate which controlled by controlling the speed of the fan in said duct.
Claim 13
Dependent Claim
170 words
An air conditioning system comprising a plenum located below a raised floor for distributing cooling air to a conditioned space located above the floors air cooling means drawing air from the conditioned space and delivering it to the plenum after cooling, and an air circulating terminal mounted in the raised floor, the air circulating terminal including an inlet chamber having a first inlet opening into the conditioned space and a second inlet opening into the plenum, an outlet chamber opening into the conditioned space, fan means located between the inlet chamber and the outlet chamber to propel air from the inlet chamber into the outlet chamber, proportioning means for controlling the proportion of air flowing into the inlet chamber through the first and second inlets respectively, temperature sensing means for sensing the temperature of air entering the first inlet and modulating means for modulating the proportioning means in response to the temperature of air entering the first inlet to control the temperature of the air propelled to the outlet chamber.
Claim 14
Dependent Claim
170 words
An air conditioning system comprising a plenum located below a raised floor for distributing cooling air to a conditioned space located above the floors air cooling means drawing air from the conditioned space and delivering it to the plenum after cooling, and an air circulating terminal mounted in the raised floor, the air circulating terminal including an inlet chamber having a first inlet opening into the conditioned space and a second inlet opening into the plenum, an outlet chamber opening into the conditioned space, fan means located between the inlet chamber and the outlet chamber to propel air from the inlet chamber into the outlet chamber, proportioning means for controlling the proportion of air flowing into the inlet chamber through the first and second inlets respectively, temperature sensing means for sensing the temperature of air entering the first inlet and modulating means for modulating the proportioning means in response to the temperature of air entering the first inlet to control the temperature of the air propelled to the outlet chamber.
Claim 15
Dependent Claim
63 words
The air conditioning system of claim 11, wherein heating means are provided in the air circulating terminal to operate in response to the temperature sensing means to heat the air flowing through the terminal when the temperature of the air flowing through the first inlet is below a predetermined level and the prpportioning means is completely blocking air flow through the second inlet.
Claim 16
Dependent Claim
23 words
The air conditioning system as claimed in claim 11 or 12, wherein the proportioning means is a damper positioned by a modulating drive.
Claim 17
Dependent Claim
59 words
The air conditioning system as claimed in claim 11, 12 or 13, wherein a second air delivery means is provided to deliver a stream cooling air to the conditioned space from the plenum and including a fan to propel the air into the conditioned space and outlet means which are moveable to allow in the stream to be directed.
Claim 18
Dependent Claim
28 words
The air condition system as claimed in the claim 14 wherein the second delivery means comprises a duct communicating with the outlet chamber of the air circulating terminal.
Claim 19
Dependent Claim
21 words
The air conditioning system as claimed in claim 14 wherein the second delivery means comprises a duct communicating with the plenum.
Claim 20
Dependent Claim
53 words
The air conditioning system as claimed in claim 14, 15 or 16, wherein the second delivery means comprises a first rigid duct portion extending vertically from the raised floor, a flexible duct portion extending from the first duct portion and a second rigid duct portion extending substantially horizontally from the flexible duct portion.
Claim 21
Dependent Claim
82 words
A local air delivery duct comprising inlet means adapted to be located in or connected to a source of conditioned air, a delivery duct connected to the inlet means and propulsion means adapted to propel air along the delivery duct, wherein the delivery duct has a first portion adjacent to the inlet means which is fixed relative to the inlet means and a second portion moveable with respect to the first portion, an air outlet vent being located in the second portion.
Claim 22
Dependent Claim
82 words
A local air delivery duct comprising inlet means adapted to be located in or connected to a source of conditioned air, a delivery duct connected to the inlet means and propulsion means adapted to propel air along the delivery duct, wherein the delivery duct has a first portion adjacent to the inlet means which is fixed relative to the inlet means and a second portion moveable with respect to the first portion, an air outlet vent being located in the second portion.
Claim 23
Dependent Claim
38 words
The local air delivery as claimed in claim 18, in which a manually operable switch is provided to control the operation of the propulsion means and the first and second duct portions are connected by flexible joint means.
References Cited (Backward Citations)
No citation records indexed.
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