EP0705983A2 - Dachlüftung - Google Patents

Dachlüftung Download PDF

Info

Publication number: EP0705983A2
Authority: EP; European Patent Office
Prior art keywords: fan; air; roof; outlet; air flow
Prior art date: 1994-09-30
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.): Granted

Application number

EP95202643A

Other languages

English (en)

French (fr)

Other versions

EP0705983A3 (de

EP0705983B1 (de

Inventor

Paulus S. W. Jansen

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Je Stork Ventilatoren Bv

Original Assignee

Je Stork Ventilatoren Bv

Priority date (The priority date 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 date listed.)

1994-09-30

Filing date

1995-10-02

Publication date

1996-04-10

1995-10-02 Application filed by Je Stork Ventilatoren Bv filed Critical Je Stork Ventilatoren Bv

1996-04-10 Publication of EP0705983A2 publication Critical patent/EP0705983A2/de

1998-03-11 Publication of EP0705983A3 publication Critical patent/EP0705983A3/de

2002-04-17 Application granted granted Critical

2002-04-17 Publication of EP0705983B1 publication Critical patent/EP0705983B1/de

2015-10-02 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
- F04D25/12—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures

Definitions

the invention relates to a fan adapted for placing on the roof of a building.
Roof fans are known which blow substantially vertically, while fans are also commercially available which have a substantially horizontal, radial outflow pattern.
the fan according to the invention now has the feature that the fan is constructed such that the air blown to the outside has both a considerable horizontal and a considerable vertical directional component. Due to the angle at which the outflowing air is displaced, ambient air is carried along through so-called "induction". An air flow will for instance be created which travels downward from above in the direction of the fan, is then deflected and carried along by the obliquely blowing air flow. Also occurring along the roof in the direction of the fan is an air flow which will deflect in the vicinity of the fan to be then carried along in the direction of the obliquely blowing air flow.
the advantage of this structure according to the invention is that the air flow brushing over the roof effectively carries away contaminants present there. It is noted in this respect that vents, inter alia of sewage systems, often debouch on the roof.
the fan according to the invention effectively discharges these contaminants and stench components so that there is no danger or at least a considerably reduced danger of these being drawn into ventilation systems placed in the surrounding area.
a further advantage of an air flow which brushes along the surface of the roof is that a certain cooling thus results therefrom.
a high temperature can build up on a roof, particularly during solar radiation.
the brushing-along air effectively breaks up the stationary thermal boundary layer whereby the temperature occurring in the roof itself and sometimes rising to very high values is reduced considerably.
Fan 1 shows a fan 1 which is placed via an opening 2 into a roof structure 3.
Fan 1 comprises a rotation-symmetrical housing 4, a motor (not drawn) accommodated in a motor housing 5 which drives a rotor 7 carrying air displacement blades 6 for rotation as according to arrow 8.
Fan 1 connects onto a tube 9 for suction therefrom of air designated with arrows 10 and blowing out thereof.
Motor housing 5 is suspended in housing 4 by means of spokes 11.
Motor housing 5 has an outer surface 12 of truncated cone form facing toward the blades 6.
the inner surface 13 likewise has the general shape of a truncated cone in the region of motor housing 5, whereby the blown air is urged to move outward as according to arrows 14 in a direction such that this air flow has both a considerable horizontal and a considerable vertical directional component.
the direction of the outward blown air forms an angle of roughly 45° with both the vertical and the horizontal direction.
the main flow 14 carries induced air flows along with it. These are designated 15 and 16 respectively.
the air flow 15 is carried over the surface of the roof structure 3 and deflected obliquely upward.
the air flow 16 is drawn downward from above and deflects to then be carried along with the main flow 14.
FIG. 2 shows a fan 17 which is likewise arranged on the roof structure 3.
Housing 18 bounds together with a motor housing 20 supported by supports 19 a rotation-symmetrical outlet cavity in order to obtain the main flow 14.
Accommodated in motor housing 20 is a motor 21 which drives a rotor 22 which carries blades 23.
the blades 23 have bent end zones 24 which display a radially outward tapering form in the rotation direction 8.
the end zones 24 hereby provide the generated air flow with a radial component during rotation whereby the fan has a higher efficiency.
deflection means giving the blown air flow the desired direction could for instance be sufficient.
deflection means can consist of a central obstruction, comprise deflection plates or be embodied such that the fan comprises a plurality of rotors blowing out air in desired directions.
the motorhouse on the one hand bounds and on the other hand covers the air outlet, i.e. the substantially rotation symmetric structure between the blades 23 and the blown-out main air flow 14, due to which the entry of rain, hail and snow is at least more or less prevented.
FIGs 3, 4, 5 and 6 show respective fans 31, 32, 33, 34, having in common an internal structure comprising a motor 35, a cover cap 136 carried by said motor, a blade wheel 36 carried by motor 36 and rotatably driven thereby, said blade wheel 36 having strips 37, the form of which is more clearly visible in figures 9 and 10.
the blade wheel exhibits an in axial direction slanting position, whilst the blades have a curved shape and a position differing from the radial direction.
the blade wheel displaces the inflowing air 10 in outward direction in a more or less cone-shaped pattern.
the outflowing air flow is again indicated with reference numeral 14.
the more or less conically shaped outlet opening 38 is bounding by a lower plastic foam part 39 and an upper plastic foam part 40.
the upper part 40 is effective for covering opening 38 in a way such that the entrance of rain is prevented. In asfar as unintentionally rain water enters opening 38, this water is guided in downward direction along the lower plastic foam part 39, where it can be removed by means of not-shown means, particularly small holes, avoiding entrance in the inlet tube through which inlet air 10 is sucked in.
the fan 32 according to figure 4 exhibits a circumferential outlet opening 41 bounded by a respective lower dish 42 and an upper dish 43, said dishes being connected with a lower plastic foam part 44 and an upper plastic foam part 45, respectively.
the fan 33 according to figure 5 exhibits a lower plastic foam part 46 and an upper plastic foam part 47, said foam parts together bounding a substantially rotation symmetric blow-out opening 48.
the fan 34 according to figure 6 exhibits only an upper foam part 49 which is carried by means of vertical strips 50 by a support plate 51 which in its turn is supported by the support structure 52.
FIG. 7 shows a fan 71 having motor 35 and blade wheel 36 with blades 37 in common with fans 31, 32, 33 and 34.
the fan has the same advantage as fans 31, 32, 33, namely the relatively large length of the blow-out opening 72 guiding the air effectively and furthermore is embodied in a way such that the lower guiding surface 73 transports entering water, if any, to a ring 73 for removal to the outside according to arrow 74.
Fan 81 according to figure 8 has a slightly different structure, but also in this case entering water, if any, is transported to the outside according to arrow 74.
Figure 9 shows a fan, the several structural parts of which consist of metal, but the structure of which basically corresponds with the structure of the fan 32 according to figure 4.
the fan 101 according to figure 10 is in a comparable fashion analogous to the fan 34 according to figure 6.
blow-out opening does not necessarily have to be rotation symmetrical, but can also have a non-round shape, which in that case may be adapted to the entire external shaping of the fan.
a non-round shape which in that case may be adapted to the entire external shaping of the fan.
use may be made of a polygonal, e.g. square main shape.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)
Packages (AREA)
Roof Covering Using Slabs Or Stiff Sheets (AREA)
Buildings Adapted To Withstand Abnormal External Influences (AREA)
Building Environments (AREA)
Glass Compositions (AREA)
Seal Device For Vehicle (AREA)

EP95202643A 1994-09-30 1995-10-02 Dachlüftung Expired - Lifetime EP0705983B1 (de)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
NL9401607		1994-09-30
NL9401607		1994-09-30
NL1000137		1995-04-12
NL1000137A NL1000137C2 (nl)	1994-09-30	1995-04-12	Dakventilator.

Publications (3)

Publication Number	Publication Date
EP0705983A2 true EP0705983A2 (de)	1996-04-10
EP0705983A3 EP0705983A3 (de)	1998-03-11
EP0705983B1 EP0705983B1 (de)	2002-04-17

Family

ID=26642035

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP95202643A Expired - Lifetime EP0705983B1 (de)	1994-09-30	1995-10-02	Dachlüftung

Country Status (7)

Country	Link
EP (1)	EP0705983B1 (de)
AT (1)	ATE216466T1 (de)
DE (1)	DE69526402T2 (de)
DK (1)	DK0705983T3 (de)
ES (1)	ES2171496T3 (de)
NL (1)	NL1000137C2 (de)
PT (1)	PT705983E (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2000017583A1 (en) *	1998-09-17	2000-03-30	Jonathan Kim Dartnall	Heat transfer system
AU747772B2 (en) *	1998-09-17	2002-05-23	Jonathan Kim Dartnall	Heat transfer system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2332552A (en) *	1943-03-24	1943-10-26	John T Belanger	Roof fan ventilator
US2439124A (en) *	1944-09-26	1948-04-06	Westinghouse Electric Corp	Centrifugal fan
GB583557A (en) *	1944-10-26	1946-12-20	Joseph Cuthbert Akester	Improvements in or relating to ventilating fan units
GB1115792A (en) *	1964-06-22	1968-05-29	Colt Ventilation & Heating Ltd	Improvements in or relating to ventilators
DE3438710C2 (de) *	1984-10-23	1986-11-27	Wilhelm Gebhardt Gmbh, 7112 Waldenburg	Dachventilator
US4890547A (en) *	1989-01-27	1990-01-02	Carnes Company, Inc.	Ventilator scroll arrangement

1995
- 1995-04-12 NL NL1000137A patent/NL1000137C2/xx not_active IP Right Cessation
- 1995-10-02 ES ES95202643T patent/ES2171496T3/es not_active Expired - Lifetime
- 1995-10-02 AT AT95202643T patent/ATE216466T1/de active
- 1995-10-02 DE DE69526402T patent/DE69526402T2/de not_active Expired - Lifetime
- 1995-10-02 DK DK95202643T patent/DK0705983T3/da active
- 1995-10-02 PT PT95202643T patent/PT705983E/pt unknown
- 1995-10-02 EP EP95202643A patent/EP0705983B1/de not_active Expired - Lifetime

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2000017583A1 (en) *	1998-09-17	2000-03-30	Jonathan Kim Dartnall	Heat transfer system
AU747772B2 (en) *	1998-09-17	2002-05-23	Jonathan Kim Dartnall	Heat transfer system
US6450414B1 (en)	1998-09-17	2002-09-17	Jonathan K. Dartnall	Heat transfer system

Also Published As

Publication number	Publication date
ES2171496T3 (es)	2002-09-16
PT705983E (pt)	2002-09-30
NL1000137C2 (nl)	1996-09-11
EP0705983A3 (de)	1998-03-11
DE69526402T2 (de)	2002-11-28
EP0705983B1 (de)	2002-04-17
DE69526402D1 (de)	2002-05-23
NL1000137A1 (nl)	1996-04-01
DK0705983T3 (da)	2002-08-05
ATE216466T1 (de)	2002-05-15

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