EP1360442B1 - Rotor ventilator - Google Patents
Rotor ventilator Download PDFInfo
- Publication number
- EP1360442B1 EP1360442B1 EP02710701A EP02710701A EP1360442B1 EP 1360442 B1 EP1360442 B1 EP 1360442B1 EP 02710701 A EP02710701 A EP 02710701A EP 02710701 A EP02710701 A EP 02710701A EP 1360442 B1 EP1360442 B1 EP 1360442B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- shaft
- bearing
- plate
- ventilator according
- 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 - Lifetime
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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
- F24F7/02—Roof ventilation
- F24F7/025—Roof ventilation with forced air circulation by means of a built-in ventilator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/005—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues using fans
Definitions
- the principle behind the roof-top rotor ventilator is that air movement passing the ventilator will cause the ventilator to rotate about its vertical axis. This movement causes the vanes of the ventilator to force air out from within the ventilator, causing the air pressure within the ventilator to be lower than the air pressure within the building in fluid communication with the ventilator. Air within the building is then be moved through the ventilator to be exhausted to the outside of the building.
- the bearing assembly is located above the plate.
- a rotor 17 which is rotatable about the shaft 13.
- the rotor 17 which has a plate 18 and a plurality of vanes 19 extending downwardly therefrom. An end 20 of each vane 19 is mounted to the plate 18.
- the rotor ventilator can also include a second plate in the form of an annulus 21 mounted to the other ends 22 of the vanes.
- the above embodiment of the rotor ventilator was described with respect to rotor ventilators having a diameter of approximately 700mm and a height of approximately 460mm.
- the double race ball bearing unit 30 is generally all that is required to maintain transverse stability of the rotor 17 in use. Only having to provide a rotor ventilator with one bearing unit provides significant advantages for ease of manufacture and reduced costs of manufacture of rotor ventilators of this size, given that only a single bearing unit is required to allow the rotor to efficiently and stably rotate.
- the inventors have surprisingly found that by replacing the high friction seals with low friction, non/low contact seals, the double race bearing unit 30 becomes suitable for use as the ball bearing unit in rotor ventilators and provides several advantages in comparison with single race ball bearing units.
- double race ball bearing units are more laterally stable and stronger than single race ball bearing units. Therefore, in the case of the embodiment of the smaller rotor ventilator illustrated in Figure 3 , one double race ball bearing unit is all that is required to maintain sufficient lateral stability of the rotor 17. This would not be sufficiently achieved with one single race ball bearing unit.
- the increased stability and strength of the double race ball bearing unit 30 means it is possible to position the ball bearing unit 30 above the plate 18 and still maintain sufficient lateral stability in certain conditions.
- FIG. 4 another embodiment of the rotor ventilator is shown that is relatively larger than the rotor ventilator described above.
- An additional support means in the form of an intermediate bearing 48 is employed to improve transverse stability of the larger rotor in use.
- the intermediate bearing 48 includes a structural member 49, which has ends 50 and 52. End 50 is mounted to the plate 18, while end 52 is mounted to the annulus 21.
- a structural arm 54 extends laterally from the structural member 49 toward the shaft 13. The end 55 of arm 54 is connected to a spider bearing 56 which is rotationally mounted to the shaft 13.
- the deflector 58 advantageously deflects gas entering the interior 12 of the ventilator toward the vanes 19 and away from the bearing unit 30. This is particularly useful when the exhaust gas is of the kind that can affect the bearing unit 30, and the bearing unit greases. For example, high humidity exhaust gases can detrimentally affect clay based bearing greases by solidifying them, while high temperature exhaust gases of 100°C or more may reduce viscosity of the bearing grease, such that it flows out of the bearing unit 30.
- the bearing jacket 72 usually substantially consists of aluminium, due to its aforementioned heat radiative properties.
- the bearing jacket 72 includes six pairs of minor fins 74 and three major fins 76.
- the fins 74 and 76 aid in the release of heat from the bearing jacket 72 by increasing the surface area of the bearing jacket 72 in contact with the surrounding atmosphere.
- the bearing jacket 72 therefore aids in drawing heat away from the bearing unit 30, which is useful when the rotor ventilator is employed in high heat environments.
Abstract
Description
- The present invention relates to ventilators and in particular to roof-top rotor ventilators.
- The invention has been developed primarily for use as a roof-top rotor ventilator and will be described hereinafter with reference to this application. However, it will be appreciated that the invention is not limited to this particular field of use.
- Roof-top rotor exhaust ventilators are utilised to aid in the removal of exhaust air from the building upon which they are employed. Such buildings may include factories, farm sheds or domestic houses.
- The principle behind the roof-top rotor ventilator is that air movement passing the ventilator will cause the ventilator to rotate about its vertical axis. This movement causes the vanes of the ventilator to force air out from within the ventilator, causing the air pressure within the ventilator to be lower than the air pressure within the building in fluid communication with the ventilator. Air within the building is then be moved through the ventilator to be exhausted to the outside of the building.
- The efficiency of a roof top rotor ventilator relies on several factors, though importantly: the initial torque required to rotate the ventilator; the amount of friction resisting the ventilator's rotation; and the vane configuration.
- A rotor ventilator according to the preamble of the independent claims is known from
US-A-1 857 762 . - In the description and the claims, when the terms "upper, "above" and "lower" are used with respect to the rotor ventilator they refer to a typical in-use orientation of the rotor ventilator, but if the rotor ventilator was used in a sideways, angled or upside down configuration, their orientations may be changed or reversed. Hence, "upper", "above" and "lower" are to be interpreted broadly in this context, and as relative terms.
- According to one aspect of the present invention there is provided a rotor ventilator including:
- a base to which a shaft is connected to extend upwardly therefrom;
- a rotor including a plate and a plurality of vanes extending downwardly therefrom, the rotor being rotatable about the shaft; and
- a double race rotatable bearing unit for supporting the rotor on the shaft and located at the plate.
- Preferably, the rotatable bearing assembly includes:
- a bearing including a central bore and two internal axially spaced bearing races;
- a central shaft extending longitudinally through the bore, with a space being defined between the bearing and the shaft, the shaft including two external axially spaced bearing races, with the shaft races being aligned with the races on the bearing;
- a plurality of ball bearings captively engaged between respective aligned races; and
- a low friction seal located at one end of the bearing and projecting radially inwards towards the shaft.
- Preferably, the bearing assembly is located above the plate.
- Preferably, a second radially inwardly projecting seal is located at another end of the bearing.
- Preferably, a support means is rotatably mounted at one end to the shaft and mounted at another end to the rotor. The one end of the support means may include a bearing unit for rotatable mounting on the shaft, and may be intermediate the plate and base.
- Preferably, an end of each vane is mounted to the plate by tab fastening means including at least one tab projection for receipt in a corresponding slot in the plate.
- a base to which a shaft is connected to extend upwardly therefrom;
- a rotor including a plate and a plurality of vanes extending downwardly therefrom, the rotor being rotatable about the shaft;
- bearing means for rotatably supporting the rotor on the shaft; and
- Preferably, a deflector is located with respect to the shaft and between the base and the plate to deflect gas passing through the rotor ventilator away from the bearing unit.
- Advantageously, the deflector aids in increasing the working life of the bearing unit, by reducing the amount of gas passing through the rotor ventilator from coming into contact with the bearing unit. This is particularly advantageous where the gas is either high temperature (eg. >100°C) or corrosive.
- Preferably, the deflector is located on the shaft adjacent the plate. Preferably, the deflector is coupled about the shaft and includes a flared portion being flared outwardly from a longitudinal axis of the shaft and toward the plate. The flared portion may be concave on a side of the deflector which faces the base. Preferably, the deflector is symmetrical about the longitudinal axis.
- The bearing unit may be located on an opposite side of the plate to the deflector.
- Preferably, a heat sink is located about the bearing unit. Advantageously, the heat sink aids in increasing the working life of the bearing unit by reducing the heat in the bearing unit. The heat sink may include at least one heat diffusing fin extending radially with respect to the axis of the shaft.
- Preferred embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings in which:
-
Figure 1 is a side elevation of a first preferred embodiment of a rotor ventilator according to the present invention; -
Figure 2 is a plan view of the rotor ventilator ofFigure 1 with the dome removed; -
Figure 3 is a cross-sectional side elevation of the rotor ventilator ofFigure 1 , taken on line 3-3; -
Figure 4 is a plan view of an alternate embodiment of a rotor ventilator with the dome removed; -
Figure 5 is a sectional side elevation of the rotor ventilator ofFigure 4 , taken on line 5-5; -
Figure 6 is a part sectional side elevation of a bearing for use with the present invention; -
Figure 7 is the cross-sectional side elevation of the rotor ventilator ofFigure 3 , including a deflector; -
Figure 8 is a cross-sectional side elevation of the deflector illustrated inFigure 7 ; -
Figure 9 is a plan view of the rotor ventilator ofFigure 1 with the dome removed, and including a heat sink; and -
Figure 10 is a cross-sectional side elevation of the rotor ventilator illustrated inFigure 9 , taken on line 10-10. - Referring to the drawings, where like reference numerals are used to denote similar or like parts,
Figures 1 to 3 and6 show a preferred embodiment of a rotor ventilator according to the invention including a base in the form of a hollowcylindrical base element 10 for mounting on a roof, wall, ceiling, floor, etc. Thebase element 10 allows gas to pass through itsopening 11 and into theinterior 12 of the rotor ventilator. The type of gas to pass through the ventilator is typically hot air, but may also be corrosive exhaust gases. Ashaft 13 is connected to extend upwardly therefrom. Abracket 14 is typically employed for added transverse stability of the shaft and to mount the shaft to thebase element 10. Thebracket 14 includeslower frame brace 15 andupper frame brace 16. Eachframe brace base element 10 into therotor ventilator interior 12 is not substantially impeded. - Also included is a
rotor 17 which is rotatable about theshaft 13. Therotor 17 which has aplate 18 and a plurality ofvanes 19 extending downwardly therefrom. Anend 20 of eachvane 19 is mounted to theplate 18. For added stability of the vanes when therotor 17 is rotating, the rotor ventilator can also include a second plate in the form of anannulus 21 mounted to the other ends 22 of the vanes. - For mounting the
vanes 19 between theplate 18 andannulus 21, eachend vane 19 has four projectingtabs 23, though in alternative embodiments eachend tabs 23. When thevanes 19 are manufactured, thetabs 23 are in planar alignment with theirrespective vanes 19. These projectingtabs 23 are then employed to mount anend plate 18 andannulus 21 respectively. To achieve the mounting, theplate 18 andannulus 21 have slots which correspond to the projectingtabs 23. To mount theends 20 of thevanes 19 to theplate 18, thetabs 23 are passed through their corresponding slots on theplate 18 and then folded laterally onto the plate to be in the mounted position seen inFigures 2 and4 . This secures theend 20 of thevane 19 to theplate 18. Similarly, to secure theends 22 of thevanes 19 to theannulus 21, projectingtabs 23 on theend 22 are passed through corresponding perforations on theannulus 21 and are then folded over on the annulus in a similar fashion to the folding oftabs 23 on theend 20. This secures theend 22 of thevanes 19 to theannulus 21. - This method of mounting the vanes to the
plate 18 andannulus 21 requires no additional fastening means, such as rivets or screws, to mount thevanes 19 to theplate 18 andannulus 21. This has the advantages of reducing the overall weight of the rotor and reducing manufacturing time and cost for manufacturing rotor ventilators. - As external air moves past the
vanes 19 of the rotor, the leadingedge 24 of each of thevanes 19 will catch the passing air, causing the rotor to rotate. In the case of the embodiments of the invention shown inFigures 1 to 5 , the rotor would be caused to rotate in a clockwise direction, when viewed from above, by air movement past the rotor ventilator. The movement of thevanes 19 through the surrounding air causes the gas within the rotor ventilator to be exhausted therefrom. This is achieved by trailingedge 25 cutting through the gas present in theinterior 12 of the rotor ventilator, and forcing this gas out from the rotor ventilator between thevanes 19. This reduces the gas pressure in theinterior 12 of the rotor ventilator. Thus higher pressure gas is drawn up into the ventilator through theopening 11 of thebase element 10 and subsequently exhausted from the rotor ventilator. - The rotor ventilator also includes bearing means in the form of a
support structure 26 for supporting the rotation of therotor 17 on theshaft 13. Thesupport structure 26 is typically mounted on top of theplate 18, to place the bearing point of therotor 17 on theshaft 13 well above the centre of gravity of therotor 17, while still keeping thesupport structure 26 in the rotor ventilator. - There are several advantages of having the
support structure 26 on top of theplate 18. The position of thesupport structure 26 above theplate 18 means that the centre of gravity of therotor 17 is well below the bearing point of thesupport structure 26 on theshaft 13. Therefore, the rotor basically hangs from the support structure. This allows for greater stability of the rotor ventilator in use because the rotor will have reduced transverse movement which would otherwise occur if the bearing point was below the centre of gravity. If the bearing point was below the centre of gravity, the rotor would overbalance, causing lateral stress on the bearing point. It then follows that in turn there is less working stress upon the support structure. - Another advantage of having the
support structure 26 on top of theplate 18 is when the rotor ventilator is used to exhaust corrosive and/or high temperature (ie over 100°C) gases. Since thesupport structure 26 is above theplate 18, the support structure will not come into contact with the exhaust gases, since they are exhausted below theplate 18, via thevanes 19. - In alternate embodiments, the support structure is located in such a position to ensure the centre of gravity of the
rotor 17 is below thesupport structure 26. - The support structure includes a fixture 27 for secure mounting to the
plate 18. In the embodiment shown inFigures 2 and 3 , the fixture 27 has three relatively long radially spacedsupport arms 28 and three relatively short radially spacedsupport arms 29. Thesearms plate 18. The arms are typically riveted to theplate 18, but may be welded or screw fastened, for example. - The
support structure 26 also includes a bearing assembly in the form of a double raceball bearing unit 30. As seen inFigure 6 , the double raceball bearing unit 30 includes acentral shaft 32, and anouter casing 34 which rotates on thecentral shaft 32. Thecentral shaft 32 andouter casing 34 have correspondingball bearing races ball bearings 40 to support the configuration. - The double race
ball bearing unit 30 is securely centrally located within the fixture 27, such that thecentral shaft 32 is in axial alignment with the central axis of theplate 18. When the double race ball bearing unit is secured within the fixture 27, the outer casing is fixed relative to the fixture 27, while thecentral shaft 32 is free to rotate with respect to theouter casing 34. - To allow the rotational mounting of the
rotor 17 about theshaft 13, anend 42 of thecentral shaft 32 is mounted to anend 44 of theshaft 13 such thatshafts - The rotor ventilator typically includes a
dome 45 placed on top of the rotor ventilator to both cover thesupport structure 26 and reduce resistance to air movement about and around the rotor ventilator. Also typically, askirt 46 is mounted to thelower side 47 of theannulus 21 to also aid in reducing resistance of air movement around the rotor ventilator. - The above embodiment of the rotor ventilator was described with respect to rotor ventilators having a diameter of approximately 700mm and a height of approximately 460mm. For ventilators of this size and smaller, the double race
ball bearing unit 30 is generally all that is required to maintain transverse stability of therotor 17 in use. Only having to provide a rotor ventilator with one bearing unit provides significant advantages for ease of manufacture and reduced costs of manufacture of rotor ventilators of this size, given that only a single bearing unit is required to allow the rotor to efficiently and stably rotate. - Furthermore, the double race
ball bearing unit 30 for use in the invention is unknown for the provision of reduced friction rotational bearing for rotor ventilators. Double race ball bearing units of the type employed in the invention were developed for use in wet environments in motors and the like and therefore employ the use of high friction seals to ensure no water, etc has access to the ball bearings and bearing races. A non-inventive person skilled in the relevant art would therefore not consider the use of such a double race ball bearing unit in a rotor ventilator application such as the rotor ventilator of the present invention. - The inventors have surprisingly found that by replacing the high friction seals with low friction, non/low contact seals, the double
race bearing unit 30 becomes suitable for use as the ball bearing unit in rotor ventilators and provides several advantages in comparison with single race ball bearing units. - One example of an advantage in using a double race ball bearing unit is that double race ball bearing units are more laterally stable and stronger than single race ball bearing units. Therefore, in the case of the embodiment of the smaller rotor ventilator illustrated in
Figure 3 , one double race ball bearing unit is all that is required to maintain sufficient lateral stability of therotor 17. This would not be sufficiently achieved with one single race ball bearing unit. Another example is that the increased stability and strength of the double raceball bearing unit 30 means it is possible to position theball bearing unit 30 above theplate 18 and still maintain sufficient lateral stability in certain conditions. - Referring now to
Figures 4 and5 , where like reference numerals are used to denote similar or like parts, another embodiment of the rotor ventilator is shown that is relatively larger than the rotor ventilator described above. An additional support means in the form of an intermediate bearing 48 is employed to improve transverse stability of the larger rotor in use. The intermediate bearing 48 includes astructural member 49, which has ends 50 and 52.End 50 is mounted to theplate 18, whileend 52 is mounted to theannulus 21. A structural arm 54 extends laterally from thestructural member 49 toward theshaft 13. The end 55 of arm 54 is connected to a spider bearing 56 which is rotationally mounted to theshaft 13. -
Figure 7 illustrates adeflector 58 in use in a rotor ventilator. Thedeflector 58 is located on the shaft, between theplate 18 and thebase 10. The deflector is immediately adjacent theplate 18, being as close as possible to theplate 18, with enough clearance such that itsupper edge 60 does not come into contact with theplate 18 when in use. The deflector includes anarrow portion 62 coupled to theshaft 13, and a flaredportion 64 being flared outwardly from a longitudinal axis of theshaft 13 and toward theplate 18. As is evident inFigure 8 , the flaredportion 64 is symmetrical about itsaxis 66, and concave on itsside 68 which faces thebase 10. - As will be apparent to the skilled addressee, the
deflector 58 advantageously deflects gas entering the interior 12 of the ventilator toward thevanes 19 and away from the bearingunit 30. This is particularly useful when the exhaust gas is of the kind that can affect the bearingunit 30, and the bearing unit greases. For example, high humidity exhaust gases can detrimentally affect clay based bearing greases by solidifying them, while high temperature exhaust gases of 100°C or more may reduce viscosity of the bearing grease, such that it flows out of the bearingunit 30. - Also, conventional rotor ventilators are typically .configured to withstand normal exhaust gas temperatures of 60-70°C. High temperature exhaust gases of 100°C or greater can detrimentally affect known rotor ventilators severely affecting their working life. However, with the configuration of the rotor ventilator of the present invention including the
deflector 58, the resultant ventilator can withstand such higher temperatures for even greater working times when compared with conventional rotor ventilators. - Different materials may also be used in construction of various components of the rotor ventilator for different exhaust environments. For example, in high temperature environments, the deflector and other components, such as the
shaft 13, are typically constructed from aluminium, since aluminium has been found to reflect radiation and also acts as a heat sink, thereby minimising the effects of radiation. The aluminium components may also be powder coated to reduce the formation of an oxide layer on the components. For corrosive exhaust environments, thedeflector 58 and other components are typically constructed from stainless steel. However, stainless steel can also be used for the shaft in high temperature environments because it minimises heat conduction to theplate 18 and thus to the bearing assembly. In lower heat, but high corrosion environments, the bearing housing and some other components may also be formed from a polymer (ie. that has no tendency to corrode). Ceramic and glass may also be used for some components. - In high temperature environments, the rotor ventilator may also employ the use of a heat sink in the form of a bearing
jacket 70, as illustrated inFigures 9 and10 . The bearingjacket 70 is coupled to theplate 18 byscrews 72, and located about the bearingunit 30. As will be apparent to the skilled addressee, in this configuration of the invention, thedome 45 is removed in use to expose the bearingjacket 72 to its surrounding environment. Therefore, when for example the ventilator is attached externally to a roof, the bearingjacket 72 is exposed to air which moves past the ventilator. - The bearing
jacket 72 usually substantially consists of aluminium, due to its aforementioned heat radiative properties. The bearingjacket 72 includes six pairs ofminor fins 74 and threemajor fins 76. Thefins jacket 72 by increasing the surface area of the bearingjacket 72 in contact with the surrounding atmosphere. The bearingjacket 72 therefore aids in drawing heat away from the bearingunit 30, which is useful when the rotor ventilator is employed in high heat environments. - In use, a hole is made in, for example, the roof of a building where improved ventilation is required. The
base element 10 is typically fixedly attached to the roof in such a way that positions theshaft 13 in a substantially vertical position and allows free rotation of therotor 17 about theshaft 13. Therefore, when air passes the rotor ventilator and causes rotation of therotor 17 as described above, air exhausted from theinterior 12 of the rotor ventilator is replaced by air from below the roof. This air is then subsequently exhausted, and improved ventilation is achieved. - Although the invention has been described with reference to particular examples, it will be appreciated by those skilled in the art that the invention may be embodied in many other forms falling within the scope of the appended claims.
Claims (15)
- A rotor ventilator including:a base (10) to which a shaft (13) is connected to extend upwardly therefrom;a rotor (17) including a plate (18) and a plurality of vanes (19) extending downwardly therefrom, the rotor (17) being rotatable about the shaft (13); andcharacterised in that a double race rotatable bearing unit (30) supports the rotor (17) on the shaft (13) and is located at the plate (18).
- A rotor ventilator according to claim 1 wherein the rotatable bearing assembly (30) includes:a bearing (34) including a central bore and two internal axially spaced bearing races (38);a central shaft (32) extending longitudinally through the bore, with a space being defined between the bearing (34) and the shaft (32), the shaft (32) including two external axially spaced bearing races (36), with the shaft races (36) being aligned with the races (38) on the bearing (34);a plurality of ball bearings (40) captively engaged between respective aligned races (34,36); anda low friction seal located at one end of the bearing (34) and projecting radially inwards towards the shaft (32).
- A rotor ventilator according to claim 1 or 2 wherein the bearing means (30) is located above the plate (18).
- A rotor ventilator according to claim 2 or 3 including a second radially inwardly projecting seal located at another end of the bearing (34).
- A rotor ventilator according to any one claims 1 to 4 including a support means (48) rotatably mounted at one end to the shaft (13) and mounted at another end to the rotor (17).
- A rotor ventilator according to claim 5 wherein the one end (55) of the support means (48) includes a bearing unit (56) for rotatable mounting on the shaft (13).
- A rotor ventilator according to claim 5 or 6 wherein the support means (48) is intermediate the plate (18) and base (10).
- A rotor ventilator according to any one of claims 1 to 7 including a deflector (58) located with respect to the shaft (13) and between the base (10) and the plate (18) to deflect gas passing through the rotor ventilator away from the bearing assembly (30).
- A rotor ventilator according to any one of claims 1 to 8 wherein an end of each vane (19) is mounted to the plate (18) by tab (23) fastening means including at least one tab (23) projection for receipt in a corresponding slot in the plate (18).
- A rotor ventilator according to claim 8 wherein the deflector (58) is located on the shaft (13) adjacent the plate (18).
- A rotor ventilator according to claim 8 or 10 wherein the deflector (58) is coupled about the shaft (13) and includes a flared portion (64) being flared outwardly from a longitudinal axis of the shaft (12) and toward the plate (18).
- A rotor ventilator according to claim 11 wherein the flared portion (69) is concave on a side (68) of the deflector (58) which faces the base (10).
- A rotor ventilator according to claim 11 or 12 wherein the detector (58) is symmetrical about the longitudinal axis (66).
- A rotor ventilator according to any one of the preceding claims including a heat sink (70) about the bearing means (30).
- A rotor ventilator according to claim 14 wherein the heat sink (70) includes at least one heat diffusing fin (74,76) extending radially with respect to the axis of the shaft (13).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN01103752 | 2001-02-13 | ||
CN01103752.0A CN1281901C (en) | 2001-02-13 | 2001-02-13 | Rotor ventilator |
PCT/AU2002/000143 WO2002065023A1 (en) | 2001-02-13 | 2002-02-13 | Rotor ventilator |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1360442A1 EP1360442A1 (en) | 2003-11-12 |
EP1360442A4 EP1360442A4 (en) | 2007-03-14 |
EP1360442B1 true EP1360442B1 (en) | 2010-04-14 |
Family
ID=4653455
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02710701A Expired - Lifetime EP1360442B1 (en) | 2001-02-13 | 2002-02-13 | Rotor ventilator |
Country Status (7)
Country | Link |
---|---|
US (2) | US20040097184A1 (en) |
EP (1) | EP1360442B1 (en) |
CN (1) | CN1281901C (en) |
AT (1) | ATE464511T1 (en) |
DE (1) | DE60235962D1 (en) |
ES (1) | ES2346406T3 (en) |
WO (1) | WO2002065023A1 (en) |
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EP2416637A1 (en) | 2010-08-05 | 2012-02-08 | Ventfair GmbH | Device and method for cooling residential rooms |
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US20130189917A1 (en) * | 2012-01-24 | 2013-07-25 | Owens Corning Intellectual Capital, Llc | Attic ventilation system |
CN103629774A (en) * | 2012-08-27 | 2014-03-12 | 上海东冠纸业有限公司 | Heat dissipation system of vacuum pump house |
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US5160149A (en) * | 1991-06-21 | 1992-11-03 | Allied-Signal Inc. | Seal rotor mount |
US5326313A (en) * | 1992-09-21 | 1994-07-05 | Clark United Corporation | Thrust bearing assembly for roof turbine |
US5618167A (en) * | 1994-07-28 | 1997-04-08 | Ebara Corporation | Vacuum pump apparatus having peltier elements for cooling the motor & bearing housing and heating the outer housing |
AU712893C (en) * | 1996-08-29 | 2003-08-14 | Csr Building Products Limited | Roof ventilator |
WO2000068619A1 (en) * | 1999-05-06 | 2000-11-16 | Gabriel Andrews | Turbine roof ventilator |
US6302778B1 (en) * | 1999-05-13 | 2001-10-16 | Gabriel Andrews | Turbine roof ventilator |
US6352473B1 (en) * | 2000-03-10 | 2002-03-05 | Thomas L. Clark | Windjet turbine |
-
2001
- 2001-02-13 CN CN01103752.0A patent/CN1281901C/en not_active Expired - Fee Related
-
2002
- 2002-02-13 US US10/467,610 patent/US20040097184A1/en not_active Abandoned
- 2002-02-13 AT AT02710701T patent/ATE464511T1/en not_active IP Right Cessation
- 2002-02-13 ES ES02710701T patent/ES2346406T3/en not_active Expired - Lifetime
- 2002-02-13 WO PCT/AU2002/000143 patent/WO2002065023A1/en not_active Application Discontinuation
- 2002-02-13 DE DE60235962T patent/DE60235962D1/en not_active Expired - Lifetime
- 2002-02-13 EP EP02710701A patent/EP1360442B1/en not_active Expired - Lifetime
-
2014
- 2014-05-12 US US14/275,305 patent/US20140323033A1/en not_active Abandoned
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202010011031U1 (en) | 2010-08-05 | 2010-10-21 | Ventfair Gmbh | Device for cooling gehauster spaces |
EP2416637A1 (en) | 2010-08-05 | 2012-02-08 | Ventfair GmbH | Device and method for cooling residential rooms |
Also Published As
Publication number | Publication date |
---|---|
CN1281901C (en) | 2006-10-25 |
CN1369648A (en) | 2002-09-18 |
ES2346406T3 (en) | 2010-10-15 |
US20140323033A1 (en) | 2014-10-30 |
DE60235962D1 (en) | 2010-05-27 |
EP1360442A1 (en) | 2003-11-12 |
WO2002065023A1 (en) | 2002-08-22 |
EP1360442A4 (en) | 2007-03-14 |
US20040097184A1 (en) | 2004-05-20 |
ATE464511T1 (en) | 2010-04-15 |
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