US3570386A - Ventilating fan unit - Google Patents

Ventilating fan unit Download PDF

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US3570386A
US3570386A US794569*A US3570386DA US3570386A US 3570386 A US3570386 A US 3570386A US 3570386D A US3570386D A US 3570386DA US 3570386 A US3570386 A US 3570386A
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ducts
partition
opening
recessed portion
fan unit
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US794569*A
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Ludwig Baumann
Benno Schutze
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    • 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
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
    • 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
    • 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
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window

Definitions

  • the invention provides a ventilating fan unit in- Pnomy 8 sertable into an opening in a windowpane or the like partition 1359/68 and adapted to propel air from the outside atmosphere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside atmosphere, which comprises [54] VENTILATING FAN UNIT two half shells which cover the outside and inside respectively 8 Chims4 Drawing Figs of said opening and bear with their peripheral edges against opposite sides of the edges thereof to form a gas and hquid- [52] US. Cl 98/33, tightjoint Each shell is formed with a central recessed portion.
  • the present invention provides a ventilating fan unit insertable into an opening in a windowpane, in a wall or other partition and adapted to propel air from the outside atmosphere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside atmosphere, comprising a fan housing composed of two half shells covering the outside and inside respectively of said opening and bearing with their peripheral edges against opposite sides of the edges thereof to form gastight and liquidtight joints, a central recessed portion with a floor at its base formed in each of said half shells, the floors of said two recesses being detachably connected back to back approxi mately inthe plane defined by the abutting peripheral edges of said half shells, a fan motor afiixed to said floors, and having oppositely projecting shaft ends each of which extends axially into one of said recessed portions, a flow fan secured to each of said shaft ends and adapted to propel an airstream in countercurrent to the other airstream through said fan housing in separate paths, and at least
  • each of the cylindrical recessed portions may be formed with at least two nozzles projecting from the periphery of said portion, the nozzles of one recessed portion crossing the nozzles of the other recessed portion in the opening in the partition so that the nozzles of each recessed portion convey air from the one side to the other side of said partition.
  • such increase is attained in that the fan motor together with the flow fans mounted on the ends of the motor shaft as well as the recessed portions together with their nozzles are inclined within the fan housing with respect to the plane of the partition so that the nozzles project in the exact centrifugal direction of the flow fans arid extend through the opening in the partition in opposite directions.
  • FIG. 1 is a longitudinal section through a ventilating fan unit according to the invention
  • FIG. 2 is a perspective view showing the cylindrical recessed portions, each of which has one nozzle and which are mounted in the opening in a windowpane;
  • FIG. 3 is a perspective view similar to FIG. 2 but showing each of the cylindrical recessed portions provided with two nozzles;
  • FIG. 4 is a longitudinal section through a ventilating fan unit in which the drive members of the unit are arranged in inclined position with respect to the plane of the windowpane.
  • the ventilating fan unit proposed by the invention generally comprises two half shells 10 and 11 of a fan housing which are so affixed to the inside and outside respectively of a corresponding opening 28 cut into a window pane 21, wall or like partition that the edges of the two half shells l0 and 11 abut each side of the edges of the opening 28 in the windowpane 21 and thus, with the interposition of sealing rings, form a gastight and liquidtight joint.
  • Each half shell 10 and 11 is formed with a central cylindrical recessed portion 12 and 13 respectively, and the periphery of each recessed portion is formed with radially projecting nozzles 22 and 23.
  • each of the recessed portions 12 and 13 is formed with one nozzle 22 or 23, respectively, only.
  • each of the nozzles 22 and 23 is bent to extend across the width of the periphery of the adjacent recessed portion if the floors of the two recessed portions are connected together.
  • more than one, for example two projecting nozzles 22 and 23 maybe arranged to extend across the width of the periphery of each of the recessed portions 12 and 13, said embodiment being particularly suitable for attachment to a roof.
  • Openings 14 are arranged in the floors of the recessed portions 12and 13 and serve to accommodate a fan motor 15, the shaft ends of which project into the recessed portions 12 and 13 where they carry flow fans 16 and 17.
  • the flow fans 16 and 17 draw in air through lattices 26 or 27 or the like and propel it through the nozzles 22 or 23 to the respective other side of the partition.
  • the passage of air through the nozzles 22 and 23 may be fully or partly throttled by throttling means in the form of flaps or slides 18 that can be brought into the nozzle cross section. Furthermore, the nozzle ends may receive replaceable filter or electrical heating means. It should be noted that the recessed portions 12 and 13 together with their nozzles 22 and 23 have the same dimensions and may be producedin one and the same mold so that they may be replaced by each other.
  • the nozzles 22 and 24 are provided with bearings 19 and 20 which rest on the edge of the opening in the partition 21 so that the ventilation openings 24 and 25 of the half shells 10 and 11 are in alignment with the nozzle ends when the half shells of the fan housing are in operative position.
  • FIG. 4 illustrates a particularly advantageous embodiment in which the fan motor 15 as well as the two flow fans 16 and 17 mounted on the ends of the motor shaft are so arranged within the fan housing formed by the two half shells that they are inclined with respect to the plane of the partition or window pane 21.
  • the cylindrical recessed portions 12 and 13 embracing said flow fans 16 and 17 and the nozzles 22 and 23 are also inclined.
  • the nozzles 22 and 23 extend in the exact centrifugal direction of the flow fans 16 and 17 and pass in opposite direction through the partition 21 so that the airstreams generated by the flow fans flow directly, i.e.without having to take up with any obstacle or deflection, into the interior and the exterior of a room, respectively.
  • a ventilating fan unit insertable into an opening in a windowpane, in a wall or other partition and adapted to propel air from the outside atmosphere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside atmosphere, comprising:
  • a fan housing composed of two half shells covering the outside and inside respectively of said opening and bearing with their peripheral edges against opposite sides of the edges thereof, to form gastight and liquidtight joints;
  • a fan motor affixed to both said panels and having a shaft transverse to said plane with the oppositely projecting shaft ends each extending axially into one of said recessed portions
  • each of the recessed portions is formed with at least two ducts projecting from the periphery of said recessed portion, the ducts of one recessed portion crossing the nozzles of the other recessed portion in the opening in the partition so that the ducts of each recessed portion convey air from the one side to the other side of said partition.
  • a ventilating fan unit as claimed in claim 1, comprising throttling mechanisms in the ducts in the half shells for at least partly shutting oif said ducts, said ducts being controlled by common actuating means.

Abstract

The invention provides a ventilating fan unit insertable into an opening in a windowpane or the like partition and adapted to propel air from the outside atmosphere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside atmosphere, which comprises two half shells which cover the outside and inside respectively of said opening and bear with their peripheral edges against opposite sides of the edges thereof to form a gas and liquidtight joint. Each shell is formed with a central recessed portion the floors of which are detachably connected back to back. To said floors a common fan motor is affixed, the two shaft ends of which extend axially into the recessed portions where they carry flow fans. Each fan propels an air stream in countercurrent to the other. The recessed portions are formed with nozzles projecting from the periphery of said portions and extending through the opening in the partition.

Description

United States Patent [111 3,570,386
[72] Inventors Ludwig Baumann St. Gallen, Switzerland; Beuno Schutze, Frankfurt am. Main, Germany [21] Appl. No. 794,569
[22] Filed Jan. 28, 1969 [45] Patented Mar. 16, 1971 [73] Assignee said Schutze assignor to said Baumann Primary Examiner-William J. Wye Attorney-Lowry, Rinehart & Markva 1 ABSTRACT: The invention provides a ventilating fan unit in- Pnomy 8 sertable into an opening in a windowpane or the like partition 1359/68 and adapted to propel air from the outside atmosphere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside atmosphere, which comprises [54] VENTILATING FAN UNIT two half shells which cover the outside and inside respectively 8 Chims4 Drawing Figs of said opening and bear with their peripheral edges against opposite sides of the edges thereof to form a gas and hquid- [52] US. Cl 98/33, tightjoint Each shell is formed with a central recessed portion.
. 98/32 the floors of which are detachably connected back to back. To [51] Ill. Cl F24f13/00 Said floors a common fan motor is affixed, the two shaft ends [50] Field ol'Search 98/33 of which extend axially into the recessed portions where they carry flow fans. Each fan propels an air stream in countercur- [56] References Cited rent to the other. The recessed portions are formed with noz- UNITED STATES PATENTS 98/33 zles projecting from the periphery of said portions and extend- 2,l52,6l4 3/1939 Younger ing through the opening in the partition.
- Patented MarchIG, 1971 I 3,570,386
3 Sheets-Sheet 1 l N V E N TORS wows; BHUMPMN 62 ammo SCHUTZ E ATTORNEYS Patented March 16, 1971 3 Sheets-Sheet 2 I N V E N TO R S LUDWIG BQUMBNN 8r BENNU SCHUTZE ATTOR N EYS Patented March 16, 1971 3 Sheets-Sheet 5 A W F s R 0 T N E V N wowa agumuu5- Baum scHuTzE ATTORNEYS vaNrrLA'rrNG FAN UNIT BACKGROUND OF THE INVENTION SUMMARY OF THE INVENTION it is the object of the present invention to provide a ventilating fan unit of the aforedescribed type, in which the turbulent streams that still occur in conventional fan housings are widely eliminated and the streams are given'a regular flow path.
To attain this object, the present invention provides a ventilating fan unit insertable into an opening in a windowpane, in a wall or other partition and adapted to propel air from the outside atmosphere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside atmosphere, comprising a fan housing composed of two half shells covering the outside and inside respectively of said opening and bearing with their peripheral edges against opposite sides of the edges thereof to form gastight and liquidtight joints, a central recessed portion with a floor at its base formed in each of said half shells, the floors of said two recesses being detachably connected back to back approxi mately inthe plane defined by the abutting peripheral edges of said half shells, a fan motor afiixed to said floors, and having oppositely projecting shaft ends each of which extends axially into one of said recessed portions, a flow fan secured to each of said shaft ends and adapted to propel an airstream in countercurrent to the other airstream through said fan housing in separate paths, and at least one nozzle extending from the periphery of the recessed portion in each of the half'shells through the opening in the partition into and through the other half shell.
Advantageously, each of the cylindrical recessed portions may be formed with at least two nozzles projecting from the periphery of said portion, the nozzles of one recessed portion crossing the nozzles of the other recessed portion in the opening in the partition so that the nozzles of each recessed portion convey air from the one side to the other side of said partition.
If arelatively small increase in depth of the ventilating fan unit is put up with, all resistances against the flow of the streams can be overcome and the air stream generated by the two flow fans can be considerably increased.
In an advantageous embodiment, such increase is attained in that the fan motor together with the flow fans mounted on the ends of the motor shaft as well as the recessed portions together with their nozzles are inclined within the fan housing with respect to the plane of the partition so that the nozzles project in the exact centrifugal direction of the flow fans arid extend through the opening in the partition in opposite directions.
Other features of the invention will be understood as the following particular description of embodiments of the invention shown in the accompanying drawings proceeds.
BRIEF DESCRIPTION OF THE DRAWINGS Several embodiments of the invention will now be described by way of example and with reference to the accompanying drawings, in which:
FIG. 1 is a longitudinal section through a ventilating fan unit according to the invention;
FIG. 2 is a perspective view showing the cylindrical recessed portions, each of which has one nozzle and which are mounted in the opening in a windowpane;
FIG. 3 is a perspective view similar to FIG. 2 but showing each of the cylindrical recessed portions provided with two nozzles; and
FIG. 4 is a longitudinal section through a ventilating fan unit in which the drive members of the unit are arranged in inclined position with respect to the plane of the windowpane.
DESCRIPTION OF THE PREFERRED EMBODIMENTS The ventilating fan unit proposed by the invention generally comprises two half shells 10 and 11 of a fan housing which are so affixed to the inside and outside respectively of a corresponding opening 28 cut into a window pane 21, wall or like partition that the edges of the two half shells l0 and 11 abut each side of the edges of the opening 28 in the windowpane 21 and thus, with the interposition of sealing rings, form a gastight and liquidtight joint.
Each half shell 10 and 11 is formed with a central cylindrical recessed portion 12 and 13 respectively, and the periphery of each recessed portion is formed with radially projecting nozzles 22 and 23.
In the embodiment illustrated in FIG. 2 each of the recessed portions 12 and 13 is formed with one nozzle 22 or 23, respectively, only. In the vicinity of the circumference of the recessed portions 12 and 13, each of the nozzles 22 and 23 is bent to extend across the width of the periphery of the adjacent recessed portion if the floors of the two recessed portions are connected together. However, as shown in FIG. 3, more than one, for example two projecting nozzles 22 and 23 maybe arranged to extend across the width of the periphery of each of the recessed portions 12 and 13, said embodiment being particularly suitable for attachment to a roof. The nozzles 22 of one recessed portion 12 cross the nozzles 23 of the other recessed portion 13 in the area of the opening 28 in the windowpane 21 or like partition so that in both cases a passage of the air streams from one to the other side of the partition is ensured without mutual interference between the two streams. Openings 14 are arranged in the floors of the recessed portions 12and 13 and serve to accommodate a fan motor 15, the shaft ends of which project into the recessed portions 12 and 13 where they carry flow fans 16 and 17. The flow fans 16 and 17 draw in air through lattices 26 or 27 or the like and propel it through the nozzles 22 or 23 to the respective other side of the partition. The passage of air through the nozzles 22 and 23 may be fully or partly throttled by throttling means in the form of flaps or slides 18 that can be brought into the nozzle cross section. Furthermore, the nozzle ends may receive replaceable filter or electrical heating means. It should be noted that the recessed portions 12 and 13 together with their nozzles 22 and 23 have the same dimensions and may be producedin one and the same mold so that they may be replaced by each other. The nozzles 22 and 24 are provided with bearings 19 and 20 which rest on the edge of the opening in the partition 21 so that the ventilation openings 24 and 25 of the half shells 10 and 11 are in alignment with the nozzle ends when the half shells of the fan housing are in operative position.
FIG. 4 illustrates a particularly advantageous embodiment in which the fan motor 15 as well as the two flow fans 16 and 17 mounted on the ends of the motor shaft are so arranged within the fan housing formed by the two half shells that they are inclined with respect to the plane of the partition or window pane 21. The cylindrical recessed portions 12 and 13 embracing said flow fans 16 and 17 and the nozzles 22 and 23 are also inclined. In this embodiment, the nozzles 22 and 23 extend in the exact centrifugal direction of the flow fans 16 and 17 and pass in opposite direction through the partition 21 so that the airstreams generated by the flow fans flow directly, i.e.without having to take up with any obstacle or deflection, into the interior and the exterior of a room, respectively.
We claim:
ll. A ventilating fan unit insertable into an opening in a windowpane, in a wall or other partition and adapted to propel air from the outside atmosphere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside atmosphere, comprising:
a. a fan housing composed of two half shells covering the outside and inside respectively of said opening and bearing with their peripheral edges against opposite sides of the edges thereof, to form gastight and liquidtight joints;
b. a central recessed portion with a panel at its base formed in each of said half shells, the panels of said two recessed portions being detachably connected back-to-back approximately in the plane defined by the peripheral edges of said half shells;
c. a fan motor affixed to both said panels and having a shaft transverse to said plane with the oppositely projecting shaft ends each extending axially into one of said recessed portions,
d. a flow fan in each of said recessed portions secured to each of said shaft ends and adapted to propel an airstream in countercurrent to the other airstream through said fan housing in separate paths; and
e. at least one duct extending from the periphery of the recessed portion in each of the half shells through the opening in the partition into and through the other half shell.
2. A ventilating fan unit as claimed in claim 1, where each of the recessed portions is formed with at least two ducts projecting from the periphery of said recessed portion, the ducts of one recessed portion crossing the nozzles of the other recessed portion in the opening in the partition so that the ducts of each recessed portion convey air from the one side to the other side of said partition.
3. A ventilating fan unit as claimed in claim 1, comprising throttling mechanisms in the ducts in the half shells for at least partly shutting oif said ducts, said ducts being controlled by common actuating means.
4. A ventilating fan unit as claimed in claim 1, comprising replaceable filter means in the ends of the ducts.
5. A ventilating fan unit as claimed in claim 1, comprising electrical heating means in the ends of the ducts.
6. A ventilating fan unit as claimed in claim 1, wherein the recessed portion of the one half shell together with its duct has the same size as the recessed portion of the other half shell together with its duct, both recessed portions being replaceable by each other.
7. A ventilating fan unit as claimed in claim 1, wherein the ducts constitute bearings resting on the edge of the opening in the partition.
8. A ventilating fan unit as claimed in claim 1, wherein the fan motor together with the flow fans mounted on the ends of the motor shaft as well as the recessed portions together with their ducts are inclined within the fan housing with respect to the plane of the partition so that the ducts project in the exact centrifugal direction of the flow fans and extend through the opening in the partition in opposite directions.

Claims (8)

1. A ventilating fan unit insertable into an opening in a windowpane, in a wall or other partition and adapted to propel air from the outside atmosphere into a ventilated interior and at the same time to exhaust air from the ventilated interior to the outside atmosphere, comprising: a. a fan housing composed of two half shells covering the outside and inside respectively of said opening and bearing with their peripheral edges against opposite sides of the edges thereof, to form gastight and liquidtight joints; b. a central recessed portion with a panel at its base formed in each of said half shells, the panels of said two recessed portions being detachably connected back-to-back approximately in the plane defined by the peripheral edges of said half shells; c. a fan motor affixed to both said panels and having a shaft transverse to said plane with the oppositely projecting shaft ends each extending axially into one of said recessed portions, d. a flow fan in each of said recessed portions secured to each of said shaft ends and adapted to propel an airstream in countercurrent to the other airstream through said fan housing in separate paths; and e. at least one duct extending from the periphery of the recessed portion in each of the half shells through the opening in the partition into and through the other half shell.
2. A ventilating fan unit as claimed in claim 1, where each of the recessed portions is formed with at least two ducts projecting from the periphery of said recessed portion, the ducts of one recessed portion crossing the nozzles of the other recessed portion in the opening in the partition so that the ducts of each recessed portion convey air from the one side to the other side of said partition.
3. A ventilating fan unit as claimed in claim 1, comprising throttling mechanisms in the ducts in the half shells for at least partly shutting off said ducts, said ducts being controlled by common actuating means.
4. A ventilating fan unit as claimed in claim 1, comprising replaceable filter means in the ends of the ducts.
5. A ventilating fan unit as claimed in claim 1, comprising electrical heating means in the ends of the ducts.
6. A ventilating fan unit as claimed in claim 1, wherein the recessed portion of the one half shell together with its duct has the same size as the recessed portion of the other half shell together with its duct, both recessed portions being replaceable by each other.
7. A ventilating fan unit as claimed in claim 1, wherein the ducts constitute bearings resting on the edge of the opening in the partition.
8. A ventilating fan unit as claimed in claim 1, wherein the fan motor together with the flow fans mounted on the ends of the motor shaft as well as the recessed portions together with their ducts are inclined within the fan housing with respect to the plane of the partition so that the ducts project in the exact centrifugal direction of the flow fans and extend through the opening in the partition in opposite directions.
US794569*A 1968-01-29 1969-01-28 Ventilating fan unit Expired - Lifetime US3570386A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH135968A CH492881A (en) 1966-01-06 1968-01-29 Room fan with simultaneous delivery of outside air into the interior and of interior air to the outside

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US3570386A true US3570386A (en) 1971-03-16

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BE (1) BE727237A (en)
CA (1) CA931808A (en)
DE (1) DE1901361B2 (en)
ES (1) ES363014A1 (en)
FR (1) FR2000887A1 (en)
GB (1) GB1256625A (en)
NL (1) NL6901103A (en)

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US4506655A (en) * 1981-02-03 1985-03-26 Kuechler Irvin R Compact double fan apparatus and method with grease-separating capabilities
US4773310A (en) * 1986-12-01 1988-09-27 Howard Corwin Fan ventilator having multiple modes of operation
AU605106B2 (en) * 1985-09-05 1991-01-10 James Howden & Company Ltd. Centrifugal fans and blowers
EP0838639A1 (en) * 1996-10-07 1998-04-29 Kiyomasa Uehara Apparatus for installing a ventilation fan
US6440190B1 (en) 2000-08-16 2002-08-27 Michael E. Goyetche Portable exhaust fan for removing airborne hazardous materials
US20040253917A1 (en) * 2003-06-12 2004-12-16 Lidartech Co., Ltd. Window having a ventilation equipment
US20080031735A1 (en) * 2006-08-01 2008-02-07 Yu-Lung Chen Single-Shaft Dual-Direction Fan Assembly
US20110039490A1 (en) * 2009-08-12 2011-02-17 James Wiese Window Fan
US20110151761A1 (en) * 2009-12-23 2011-06-23 Zeledyne, Llc Through Glass Ventilation
US20110171898A1 (en) * 2008-09-18 2011-07-14 Berling Gmbh Exhaust Hood
US8155797B2 (en) 2009-08-12 2012-04-10 James Wiese Window fan control system and method of controlling a fan unit
US20130295837A1 (en) * 2012-05-01 2013-11-07 Wayne Edward Bailey Apparatus to prevent damage to a gaseous fluid (radon) mitigation system's fan and monitor the system's performance to assure efficient operation
US20160084518A1 (en) * 2014-09-22 2016-03-24 Sunonwealth Electric Machine Industry Co., Ltd. Air Exchange Device Capable of Adjusting Temperature Difference
CN107514379A (en) * 2017-09-25 2017-12-26 深圳市普瑞美泰环保科技有限公司 A kind of centrifugal blower of the double air-out of double air intakes
WO2018091131A1 (en) * 2016-11-16 2018-05-24 Ebm-Papst St. Georgen Gmbh & Co. Kg Double-flow turbomachine
WO2019037212A1 (en) * 2017-08-23 2019-02-28 上海多环油烟净化设备有限公司 Dual-use circulating purifier
US20210310671A1 (en) * 2020-04-06 2021-10-07 Tae Yeon Won Window-mounted smart air purifier

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DE2816669C2 (en) * 1978-04-18 1986-06-26 Heddernheimer Metallwarenfabrik GmbH, 7239 Fluorn-Winzeln Ventilation unit
DE8135638U1 (en) * 1981-12-08 1982-04-01 Wilhelm Gebhardt Gmbh, 7112 Waldenburg RADIAL FAN
DE8206788U1 (en) * 1982-03-11 1982-08-05 Siegenia-Frank Kg, 5900 Siegen VENTILATION DEVICE FOR INSTALLATION IN WINDOWS AND / OR IN OTHER WALL OPENINGS OF BUILDINGS
DK2778432T3 (en) 2013-03-15 2016-01-25 Ebm Papst Mulfingen Gmbh & Co Fan device with flow rectifier
CN106016565A (en) * 2016-05-17 2016-10-12 广东新风缘空气净化设备有限公司 Fresh air unit and air supply method thereof
DE102021110148A1 (en) 2021-04-21 2022-10-27 Ventomaxx Gmbh Ventilation device, wall fan insert and associated wall box

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Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506655A (en) * 1981-02-03 1985-03-26 Kuechler Irvin R Compact double fan apparatus and method with grease-separating capabilities
AU605106B2 (en) * 1985-09-05 1991-01-10 James Howden & Company Ltd. Centrifugal fans and blowers
US4773310A (en) * 1986-12-01 1988-09-27 Howard Corwin Fan ventilator having multiple modes of operation
EP0838639A1 (en) * 1996-10-07 1998-04-29 Kiyomasa Uehara Apparatus for installing a ventilation fan
US6953491B2 (en) 2000-08-16 2005-10-11 Michael E. Goyethce Exhaust fan for removing airborne materials
US6599341B2 (en) 2000-08-16 2003-07-29 Michael E. Goyetche Exhaust fan for removing airborne materials
US20030205038A1 (en) * 2000-08-16 2003-11-06 Goyetche Michael E. Exhaust fan for removing airborne materials
US6440190B1 (en) 2000-08-16 2002-08-27 Michael E. Goyetche Portable exhaust fan for removing airborne hazardous materials
US7270600B2 (en) * 2003-06-12 2007-09-18 Lidartech Co., Ltd Window having a ventilation equipment
US7083110B2 (en) * 2003-06-12 2006-08-01 Lidartech Co., Ltd. Window having a ventilation equipment
US20060270334A1 (en) * 2003-06-12 2006-11-30 Lidartech Co., Ltd. Window having a ventilation equipment
US20040253917A1 (en) * 2003-06-12 2004-12-16 Lidartech Co., Ltd. Window having a ventilation equipment
US20080031735A1 (en) * 2006-08-01 2008-02-07 Yu-Lung Chen Single-Shaft Dual-Direction Fan Assembly
US20110171898A1 (en) * 2008-09-18 2011-07-14 Berling Gmbh Exhaust Hood
US9188352B2 (en) 2009-08-12 2015-11-17 James Wiese System and method for controlling a fan unit
US20110039490A1 (en) * 2009-08-12 2011-02-17 James Wiese Window Fan
US20110155365A1 (en) * 2009-08-12 2011-06-30 James Wiese System and method for controlling a fan unit
US8155797B2 (en) 2009-08-12 2012-04-10 James Wiese Window fan control system and method of controlling a fan unit
US9927138B2 (en) 2009-08-12 2018-03-27 James Wiese System and method for controlling at least one fan and a compressor
US20110151761A1 (en) * 2009-12-23 2011-06-23 Zeledyne, Llc Through Glass Ventilation
US9140461B2 (en) * 2012-05-01 2015-09-22 Wayne E. Bailey Radon exhaust system with a diagnostic bypass filter apparatus
US20130295837A1 (en) * 2012-05-01 2013-11-07 Wayne Edward Bailey Apparatus to prevent damage to a gaseous fluid (radon) mitigation system's fan and monitor the system's performance to assure efficient operation
US20160084518A1 (en) * 2014-09-22 2016-03-24 Sunonwealth Electric Machine Industry Co., Ltd. Air Exchange Device Capable of Adjusting Temperature Difference
WO2018091131A1 (en) * 2016-11-16 2018-05-24 Ebm-Papst St. Georgen Gmbh & Co. Kg Double-flow turbomachine
WO2019037212A1 (en) * 2017-08-23 2019-02-28 上海多环油烟净化设备有限公司 Dual-use circulating purifier
CN107514379A (en) * 2017-09-25 2017-12-26 深圳市普瑞美泰环保科技有限公司 A kind of centrifugal blower of the double air-out of double air intakes
US20210310671A1 (en) * 2020-04-06 2021-10-07 Tae Yeon Won Window-mounted smart air purifier
US11913652B2 (en) * 2020-04-06 2024-02-27 Tae Yeon Won Window-mounted smart air purifier

Also Published As

Publication number Publication date
FR2000887A1 (en) 1969-09-19
AT287983B (en) 1971-02-10
GB1256625A (en) 1971-12-08
ES363014A1 (en) 1970-12-16
DE1901361A1 (en) 1969-09-25
CA931808A (en) 1973-08-14
DE1901361B2 (en) 1972-09-14
NL6901103A (en) 1969-07-31
BE727237A (en) 1969-07-01

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