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WO2004090337A1 - Dispositif de ventilation comportant un turbine tangentielle - Google Patents

Dispositif de ventilation comportant un turbine tangentielle Download PDF

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Publication number
WO2004090337A1
WO2004090337A1 PCT/DK2004/000247 DK2004000247W WO2004090337A1 WO 2004090337 A1 WO2004090337 A1 WO 2004090337A1 DK 2004000247 W DK2004000247 W DK 2004000247W WO 2004090337 A1 WO2004090337 A1 WO 2004090337A1
Authority
WO
WIPO (PCT)
Prior art keywords
ventilating device
impeller
holder
air
heat exchanger
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.)
Ceased
Application number
PCT/DK2004/000247
Other languages
English (en)
Inventor
Ole Hansen
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.)
Danfoss AS
Convec AS
Original Assignee
Danfoss AS
Convec AS
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.)
Filing date
Publication date
Application filed by Danfoss AS, Convec AS filed Critical Danfoss AS
Priority to EP04725886A priority Critical patent/EP1613863A1/fr
Publication of WO2004090337A1 publication Critical patent/WO2004090337A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/422—Discharge tongues
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
    • F04D17/04—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal of transverse-flow type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps

Definitions

  • the present invention relates to a ventilating device comprising a cross-flow impeller, and in particular, to a holder which connects a cross-flow impeller to a building component at least substantially without interfering with the generated air-stream.
  • the ventilating device can be used, e.g. for forcing thermal convection between a heat exchanger, e.g. a radiator and the surrounding atmosphere.
  • the invention relates to a stabilizing member to be arranged between an inlet zone and an outlet zone of a cross-flow blower for stabilizing an air stream from the blower and to a method for establishing convection in a building.
  • cross-flow blowers are used for ventilation and for forcing thermal convection, e.g. in combination with central-heating units for houses.
  • the use of a cross- flow blower enables a highly improved convection between a radiator and the surroundings and, accordingly, the need for large radiators is reduced.
  • a cross- flow blower is provided in a housing comprising a chassis and a cover.
  • the purpose of the chassis is partly to provide an air-passage which forces the air through the impellers of the cross-flow blower and partly to carry the impeller in a supporting unit which can be fixed, e.g. to the floor or the roof of a building.
  • the purpose of the cover is mainly to ensure the safety of the cross-flow blower in operation and, sometimes, the cover is adapted in order to defuse the air-stream exiting from the blower.
  • An unshielded impeller of the regular type for a cross- flow blower would under normal conditions not be capable of generating an air-stream to and from the impeller. On the contrary, rotation of the impeller would merely cause a slight turbulence around the impeller. Also for that reason, it has always been a general view that cross-flow blowers must have an air guiding housing ensuring the generation of an air-stream forming convection with the surroundings .
  • GB 1,146,503 discloses a cross-flow blower of the above mentioned kind.
  • the blower is provided with a guide plate 2 forming a chassis which guides the air from an inlet part of the blower to an outlet part of the blower.
  • the blower is fitted with a vortex inducing tongue 3.
  • the housing of the traditional blowers is used for guiding the air streams in certain directions and since the housing takes up relatively much space compared to the ventilating impeller, difficulties in the adaptation of traditional cross-flow blowers in building structures has been experienced. As an example, it can be difficult to fit the traditional cross-flow blowers into narrow spaces, e.g. in connection with thermal convective constructions, such as radiators for heating or cooling, or, such as for establishing convection around pipes, e.g. in connection with old installations and in cases wherein the space is limited.
  • the housing implies additional costs to the making of the cross-flow blower and it may even be undesired for architectural and design related reasons or the housing may prevent the air from leaving the blower in a specifically desired direction.
  • the present invention in a first aspect, relates to a ventilating device comprising:
  • a cross-flow impeller extending in a longitudinal direction around an axis of rotation and being adapted to generate an air-stream extending from the ambience towards an inlet zone, from the inlet zone to an outlet zone and from the outlet zone towards the ambience, and - a holder comprising fastening means adapted to connect the impeller to a building component,
  • the holder connects the impeller to the building component at least substantially without interfering with the generated air-stream so as to allow the direction from the inlet to the outlet to be selected independently upon the direction of the holder in relation to the building component .
  • the holder of the impeller does not interfere with the generated air-stream, it is possible, to integrate the impeller more flexibly into existing buildings or into architectural features of a modern house, e.g. by attaching the impeller directly onto pipes of a central heating system, onto or behind wall panels, or by any similar integration of the impeller into the building.
  • the holder of the ventilating device could be formed as an ad-on component or integrally with a pipe holder such as a clip-on pipe holder or any similar arrangement for holding pipes to walls, roofs, floors etc.
  • the impeller could be a regular oblong impeller known per se from traditional cross-flow blowers. At one end zone, and optionally at both of the two axially disposed end- zones of the impeller, the impeller could be fastened to the holder via a rotational bearing allowing the impeller to rotate in relation to the holder and the surrounding building.
  • the rotation of the impeller would normally be caused by an electrical motor connected to or integrated with the impeller.
  • the impeller itself could constitute the rotor of this motor while the holder constitutes the stator of the motor.
  • the impeller could also be fastened to the holder at a point in between the two end zones from which point one part of the impeller extends axially in one direction from the holder and one part extends axially in the opposite direction from the holder.
  • a holder which is capable of holding the impeller in one out of two axially disposed end-portions thereof, at least substantially without hindering passage of an air-stream extending into and out of the outer peripheral surface of the impeller in a direction perpendicular to the longitudinal axis of the impeller.
  • the holder may form a suspension for holding two impellers extending in a longitudinal direction from the holder.
  • the holder may allow rotation of a first one of the two impellers to be transferred to the other one of the two impellers thus allowing a row of impellers to be driven by one motor.
  • the holder may hold the rotational bearing thus allowing the impeller to rotate around its axis of rotation and may further comprise a spherical bearing connected between the rotational bearing and the holder.
  • the spherical bearing could allow the impeller to be rearranged in space, i.e. allow the longitudinal direction of the impeller in relation to the building component to be changed. It is, however, often desirable to lock the longitudinal direction of the impeller to a fixed direction in respect of the building component. As an example, it may be desired to use the building component, e.g.
  • the ventilation device may preferably have a holder with fastening means which determines a longitudinal direction of the impeller in relation to a building component to which the ventilating device is connected.
  • the holder may be adapted to hold the impeller within a distance which is smaller than the largest diametric size of the impeller from the building component.
  • the impeller may be arranged in close vicinity to building components, e.g. to wall panels, pipes etc.
  • building components may advantageously be used to replace the traditional components of the blower, e.g. a chassis for guiding the air-stream and also for replacing the stabilising member.
  • the ventilating device may be attached in close vicinity to a wall panel and adjacent a pipe. The wall panel may thus be used for guiding the air-stream and the pipe may be used for separating the inlet zone from the outlet zone.
  • the stabilizing member is detachably connected to the ventilating device, e.g. to the holder.
  • the stabilizing member can be attached directly to the heat exchanger, e.g. directly to a pipe or the stabilizing member could also be attached to a chassis holding the heat exchanger.
  • the air-gab between the member and the outer peripheral surface of the impeller should be kept relatively low and preferably below 1/3 of the largest diametric size of the impeller.
  • the stabilizing member is preferably provided in a length substantially equal to the longitudinal length of the impeller to allow the member to cover the entire longitudinal length thereof.
  • the stabilizing member can under certain circumstances generate a whistling sound.
  • a stabilizing member comprising a material which is permeable to the air of the air-stream may advantageously be used.
  • a porous material e.g. a material with a porosity which allows the air to defuse through the material but which gives a certain resistance may be selected.
  • the material could be arranged along a rim portion of the stabilizing member which faces towards the impeller.
  • the entire member could be made from a porous material, e.g.
  • porous material could be made from PPI or PVC or any similar plastic materials which have been foamed to form a porous spongy body.
  • the holder and its fastening means are specifically adapted to hold the ventilating device against a heat exchanger.
  • the fastening means may comprise one or more magnets capable of holding the ventilating device against a surface of a magnetically conductive material, e.g. steel. It may sometimes be an advantage to attach the ventilating device to a set of pipes, e.g. to pipes of a regular central heating installation.
  • the fastening means may comprise a pair of semi-circular gripping elements adapted to grip a pipe, the elements forming a circular arc segment, preferably larger than 180 degrees .
  • the heat exchanger e.g. the pipe(s) may be attached to the building via a heat exchanger or pipe chassis or similar housing.
  • the chassis may comprise an extruded assembly profile, e.g. a profile made from aluminium.
  • the profile could have fixation means for fixation of the heat exchanger or pipe (s) .
  • the user may attach a chassis to the building, e.g. to a wall, a floor, a roof or similar building component and subsequently, the heat exchanger, e.g. a pipe is attached to the chassis.
  • central heating installations comprises sets of two pipes, one pipe with water going from a boiler or similar heat exchanger towards a number of radiators and one returning the water from the radiators to the boiler or heat exchanger.
  • the pipes are mounted to the building in parallel.
  • the holder may therefore comprise a second pair of semi-circular gripping elements adapted to grip a second pipe, preferably a pipe which is running in parallel with the first pipe.
  • the most strongly connected pipe can function as a hinge pin allowing the ventilating device to be pivoted away from the other pipe or away from other building components, e.g. for cleaning purposes.
  • finned pipes are used as heat exchangers in central heating installations.
  • the inner surface of the gripping elements may have fins adapted to engage corresponding fins of such a finned pipe.
  • the ventilating device is used for ventilating a cooling installation, e.g. for ventilating one or more pipes for a cooling medium, it may be an advantage to provide attachment means for attaching a tray for collecting a condensed liquid from such pipes or from a similar heat exchanger.
  • the tray may be attached to the holder or the tray may be formed as an integrated part with the holder.
  • the tray could be formed as an integrated part of the stabilizing member.
  • the stabilizing member could be made with a cross-sectional shape forming an air-guide for the heat- exchanger, e.g. in the form of a plate pressed or moulded into a shape serving to guide the air across the heat- exchanger.
  • the tray could be provided with a surface capable of absorbing the condensed liquid, e.g. a surface of a spongy material or a surface comprising a hydrophilic polymeric material, clay, a ceramic material or any similar material. Moreover or alternatively, the tray could have a drain for draining the condensed liquids into a place of disposal. Moreover, the tray could be provided with a draining pipe for leading away a condensed liquid and at least one opening for letting the condensed liquid into the pipe. The draining pipe could be subject to a pressure which is lower than the pressure of the ambient atmosphere. This will allow the condensed liquid to be led away by suction.
  • a surface capable of absorbing the condensed liquid e.g. a surface of a spongy material or a surface comprising a hydrophilic polymeric material, clay, a ceramic material or any similar material.
  • the tray could have a drain for draining the condensed liquids into a place of disposal.
  • the tray could
  • the opening in the pipe could be made as a longitudinally extending slot at the top part of the draining pipe.
  • the pipe When the pipe is arranged in the tray, it will remove the water by suction along the entire length of the slit.
  • the pipe could be made from a porous material or the pipe could have a plurality of small holes.
  • the tray could also be formed as an evaporator, e.g. with a surface which has been enlarged by the provision of ribs, holes or similar uneven surface structure.
  • the holder could also be provided with attachment means for attaching an electrical motor to the ventilating device for driving the rotation of the impeller.
  • the holder could also be formed as a stator part of such a motor.
  • the holder could also have attachment means or for attaching a shield to the ventilating device.
  • a shield should be formed so that it can be attached flexibly to the ventilating device to cover a part of the impeller which is exposed in a specific setup of the ventilating device.
  • the shield could also form an integrated part of the holder, but in that case, the shield should preferably be formed from a flexible material allowing the user to attach the ventilating device to a building component and subsequently to reshape or in similar way to adjust the shield to match the specific purpose.
  • a sound shield or a decorative shield or even a power supply for the electrical motor could be connectable or integrated into the holder.
  • the holder, impeller or any other part of the ventilating device may further comprise solar cells for generation of power for driving the rotation of the impeller.
  • the ventilating device may comprise a control circuit which is capable of controlling the rotational speed or at least to turn the rotation of the impeller on or off based on a measured temperature compared with a desired temperature setting.
  • the device may comprise a layer of a thermally insulating material arranged to reduce thermal convection between the heat exchanger and the impeller, e.g. arranged between the heat exchanger and the holder or between the holder and the motor driving the impeller.
  • the ventilating device may comprise an isolating shield for partly isolation of a heat exchanger connected to the ventilating device.
  • the isolation could be made with a set of openings allowing the stream of air generated by the impeller to establish forced convection between the heat exchanger and surrounding atmosphere, i.e. the holes could be arranged across the air-stream so that the air-stream blows air through the isolating layer across the heat exchanger. If the holes are relatively small, whey will limit natural convection between the heat exchanger and surrounding atmosphere.
  • the shield could be integrated in or attached to the aforementioned heat exchanger or pipe chassis .
  • the present invention relates to a holder for a ventilating device and with any of the features as described for the holder of the ventilating device described under the description of the first aspect of the invention.
  • the present invention relates to a stabilizing member for a cross-flow blower, the stabilising member forming an oblong member to be arranged in parallel to a rotational axis of a cross-flow impeller with a rim portion arranged in close vicinity to the surface of the impeller, the rim portion being made from a material which is permeable to an air-stream generated by the impeller.
  • the member or at least a part of the member, preferably a rim portion thereof, to be arranged in close vicinity to the impeller could be made from a material selected from the group consisting of PPI, PUR, PU and PVC.
  • the member could comprise PPI 15-40-60 which is an open pored material allowing the air to defuse through the material .
  • the member could in general be made with any of the features described for the stabilising member of the ventilating device of the first aspect of the invention, in particular, it is desirable to make the member from a material which causes a flow resistance to the air permeating the stabilizing member.
  • the present invention relates to a method of generating a forced stream of air wherein an cross-flow impeller is fastened to a building component so close to the building component that a surface of the building component forms an air guiding surface for guiding air to and from the impeller and thus establishes an inlet zone and an outlet zone of the impeller.
  • FIG. 1 shows cross sectional view of a ventilating device according to the invention mounted to a building component
  • Fig. 2 shows the ventilating device of Fig. 1, wherein a stabilizing member is attached for improving the efficiency of the ventilator
  • Fig. 3 shows the ventilating device with a holder for holding the device to a set of two pipes, e.g. pipes of a central heating installation in a building,
  • Fig. 4 shows the ventilating device of Fig. 3, wherein the impeller has been rotated away from the building component, one of the pipes serving as a hinge element for that purpose,
  • Fig. 5 shows a cross sectional view of the ventilating device with a stabilizing member having an edge of a porous material
  • Figs. 6 and 7 show two different embodiments of the stabilizing member attached in a regular cross-flow ventilator
  • Fig. 8 shows a cross sectional view of a heat exchanger or pipe chassis to which the ventilating device is attached.
  • the ventilating device comprises an impeller 1, e.g. made from a plurality of longitudinally extending profiles 2, e.g. made from aluminium or any similar metal or plastics material.
  • the profiles are assembled via circular disks 3 provided with slots for receiving the profiles there through.
  • the impeller may alternatively be made by injection moulding and it could even be made in a single injection into a mould.
  • the impeller is made with a longitudinally centre hole 4.
  • the impeller is, at a first end portion, and alternatively at both ends, fastened to a building component, in this case a wall panel 6, via one or more holders.
  • the ventilating device can be mounted in any direction, and the direction of the air-stream from the impeller can be established subsequently, e.g. by using the wall panel 6 as a guiding surface for the air-stream.
  • the ventilating device is fitted with a stabilising member 21.
  • the stabilizing member extends in the entire length of the impeller and in close vicinity to the outer peripheral surface thereof.
  • the stabilizing member stabilizes the air-stream by separating an inlet zone of the ventilating device from an outlet zone of the ventilating device.
  • the stabilizing member of Fig. 2 is attached adhesively to the outer surface 22 of the holder.
  • the user of the ventilating device may attach the stabilizing member after the ventilating device has been affixed to the building component and to any desired location on the ventilating device.
  • the user may define the inlet zone and the outlet zone, e.g. by using the building component for guiding the air, and subsequently by arranging the stabilizing member on a corresponding place on the holder.
  • the ventilating device is fitted with a holder which is split into a first holding part 31 capable of gripping a set of two pipes 32, 33.
  • the pipes could form a part of a regular central heating system and thus carry a heating or cooling medium.
  • each of the disclosed holders is fitted with two sets of gripping elements 34, 35 (best seen in Fig. 4 as 41, 42) adapted to grip a pipe.
  • the gripping elements form circular arc sections which - at least in the case of one of the elements - advantageously could be a circular section larger than 180 degrees.
  • the elements are made from a material which allows the elements to flex in and out during the mounting of the holder onto the pipes. As shown, the holder is made to grip two adjacent pipes.
  • the first holding part extends in a direction visualised by the arrow 36 substantially perpendicularly to a longitudinal direction of both of the pipes and terminates in fastening means 37 for fastening a stabilizing member 38 to the first holding part.
  • the stabilizing member is attached to the first holder at a first one 39 of its two widest surfaces 39, 40 arranged in an angle, ⁇ .
  • the angle ⁇ being in the range between 20-60 degrees to a plan extending through the longitudinal centre axes of both of the pipes.
  • a second holding part 41, holding the impeller 42, is attached to the opposite surface of the stabilizing member.
  • the first and second holding members and/or the stabilizing member could be made in one piece. As shown in Fig.
  • this specific arrangement of the impeller in relation to the two pipes offers the advantage that the impeller, e.g. for the purpose of removing dust and dirt from the pipes, can be pivoted away from the building component, in this case from the wall panel.
  • one of the pipes functions as a pivoting pin and forms the axis of rotation.
  • one of the two gripping elements may be adapted to grip the pipe more strongly than the other one of the two gripping elements.
  • one of the elements may form an arc section larger than 180 degrees while the other one forms an arc section less than 180 degrees.
  • the first holding part of the holder may grip the pipe on locations fitted with sleeves 43.
  • the sleeves could be made from a material which is durable to the scratching impact of the gripping elements while they engage the pipe and thus serve for the protection e.g. of a painted pipe which could have been scratched.
  • a ventilating device is sketched in a cross sectional view.
  • the device comprises a holder which carries a tray 51 for collecting dripping liquids, e.g. condensed liquids from cooling pipes 52, 53.
  • a stabilizing member 54 with a porous material 55 is attached to a rim portion 56 of the tray.
  • the stabilizing member separates an inlet zone 57 from an outlet zone 58 of the ventilating device. Due to the porosity of the material, air from the outlet zone can defuse through the stabilizing member, or at least through a rim portion thereof, to the inlet zone.
  • FIGs 6 and 7 two different stabilizing members 61, 71 have been shown when fitted to a regular cross-flow blower of the kind fitted with a housing 62, 73 forming a flow channel for guiding the air-stream.
  • the stabilising member 61 is made from a material which is self-supporting, i.e. it has a stiffness which allows the material to be arranged in close vicinity to the impeller without any stiffening members attached thereto.
  • the stabilizing member 71 is attached to a stiffening member 72.
  • Fig. 8 shows a heat exchanger or pipe chassis, to which the ventilating device is fitted with an isolating shield 81 for partly insulation of a heat exchanger, e.g.
  • the shield forms openings 84, allowing passage for an air- stream generated by the impeller across the pipes.
  • the shield strongly limits natural convection of heat between the surroundings and the pipes when the ventilating device is switched off. It is thus possible effectively to control the energy exchanged between the pipes and the surroundings by controlling the power to an electrical motor driving the impeller.
  • the stabilising member 85 is connected directly to the shield, whereas the impeller 86 could be connected to a neighbouring building component, e.g. directly to a wall panel 87 or similar.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

La présente invention a trait à un dispositif de ventilation comportant un turbine tangentielle et un support pour la fixation du dispositif à un élément de construction. Le support n'entrave pas l'écoulement d'air généré par la turbine et il est donc possible d'intégrer le dispositif de ventilation de manière plus flexible dans divers éléments de construction sans tenir compte des directions des orifices d'entrée et de sortie par rapport au support portant la turbine. L'invention a également trait à un organe stabilisateur réalisé en matériau poreux qui assure l'atténuation du bruit qui est habituellement généré par des stabilisateurs de ventilateurs tangentiels.
PCT/DK2004/000247 2003-04-14 2004-04-06 Dispositif de ventilation comportant un turbine tangentielle Ceased WO2004090337A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04725886A EP1613863A1 (fr) 2003-04-14 2004-04-06 Dispositif de ventilation comportant un turbine tangentielle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200300585 2003-04-14
DKPA200300585 2003-04-14

Publications (1)

Publication Number Publication Date
WO2004090337A1 true WO2004090337A1 (fr) 2004-10-21

Family

ID=33154970

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2004/000247 Ceased WO2004090337A1 (fr) 2003-04-14 2004-04-06 Dispositif de ventilation comportant un turbine tangentielle

Country Status (4)

Country Link
EP (1) EP1613863A1 (fr)
CN (1) CN1798928A (fr)
RU (1) RU2005135906A (fr)
WO (1) WO2004090337A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1701041A3 (fr) * 2005-02-04 2008-03-12 Matsushita Electric Industrial Co., Ltd. Climatiseur
US8403633B2 (en) 2008-10-23 2013-03-26 Foxconn Technology Co., Ltd. Cooling fan
CN109236742A (zh) * 2018-09-27 2019-01-18 佛山市顺德区美的洗涤电器制造有限公司 蜗舌、风机和油烟机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108194386A (zh) * 2018-02-07 2018-06-22 广东纽恩泰新能源科技发展有限公司 一种贯流式风机

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1489614A (fr) * 1966-08-17 1967-07-21 Al Ruckstuhl G M B H Ventialteur pour appareils de chauffage
DE19823575A1 (de) * 1998-05-27 1999-12-02 Ltg Holding Gmbh Querstromventilator
WO2002004871A2 (fr) * 2000-07-07 2002-01-17 Convec Aps Dispositif de ventilation et batiment comportant un tel dispositif de ventilation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1489614A (fr) * 1966-08-17 1967-07-21 Al Ruckstuhl G M B H Ventialteur pour appareils de chauffage
DE19823575A1 (de) * 1998-05-27 1999-12-02 Ltg Holding Gmbh Querstromventilator
WO2002004871A2 (fr) * 2000-07-07 2002-01-17 Convec Aps Dispositif de ventilation et batiment comportant un tel dispositif de ventilation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1701041A3 (fr) * 2005-02-04 2008-03-12 Matsushita Electric Industrial Co., Ltd. Climatiseur
US8403633B2 (en) 2008-10-23 2013-03-26 Foxconn Technology Co., Ltd. Cooling fan
CN109236742A (zh) * 2018-09-27 2019-01-18 佛山市顺德区美的洗涤电器制造有限公司 蜗舌、风机和油烟机

Also Published As

Publication number Publication date
CN1798928A (zh) 2006-07-05
RU2005135906A (ru) 2006-04-20
EP1613863A1 (fr) 2006-01-11

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