CA2725245A1 - Extraction fan assembly for an animal husbandry barn - Google Patents

Extraction fan assembly for an animal husbandry barn Download PDF

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Publication number
CA2725245A1
CA2725245A1 CA 2725245 CA2725245A CA2725245A1 CA 2725245 A1 CA2725245 A1 CA 2725245A1 CA 2725245 CA2725245 CA 2725245 CA 2725245 A CA2725245 A CA 2725245A CA 2725245 A1 CA2725245 A1 CA 2725245A1
Authority
CA
Canada
Prior art keywords
fan
damper flap
construction according
air
fan construction
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.)
Abandoned
Application number
CA 2725245
Other languages
French (fr)
Inventor
Robert Labrecque
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA 2725245 priority Critical patent/CA2725245A1/en
Priority to CA2748452A priority patent/CA2748452C/en
Priority to CA2927369A priority patent/CA2927369C/en
Priority to CA2822971A priority patent/CA2822971C/en
Priority to PCT/CA2011/050752 priority patent/WO2012079167A1/en
Priority to EP11847989.8A priority patent/EP2652413A1/en
Priority to CN201180065888.1A priority patent/CN103348191B/en
Publication of CA2725245A1 publication Critical patent/CA2725245A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K1/00—Housing animals; Equipment therefor
    • A01K1/0047—Air-conditioning, e.g. ventilation, of animal housings
    • A01K1/0052—Arrangement of fans or blowers
    • 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
    • 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
    • F04D25/14—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures and having shutters, e.g. automatically closed when not in use
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre

Abstract

An animal barn includes air inlets which are filtered to extract pathogens and a plurality of extraction fans for generating an air stream so as to draw replacement air into the containment area through the air inlets. Each fan has a housing mounted in a wall with an outlet duct extending through the wall to an outlet opening outside the wall. A damper flap is mounted on the fan suspended by a hinge at an upper edge so as to extend in a closed position across the opening in a mounting plate. The damper flap is movable to an open position under forward air flow from the fan and closes against a resilient deformable seal to seal the damper flap to prevent reverse flow of pathogen contaminated air through the fan housing when the fan is shut off. An adjustable abutment member can act to hold the flap partly open against opposing wind forces during low fan operation.

Claims (21)

1. A fan construction for use in an animal husbandry barn where the barn comprises:

a containment area;

a plurality of air inlets into the containment area where each air inlet has an air filter system for extraction from incoming air of pathogens so as to prevent transmission of disease to the animals;

and a plurality of extraction fan constructions for generating an air stream exiting the containment area so as to draw replacement air into the containment area through the air inlets;

each fan construction comprising:
a fan housing;

a fan mounted in the housing;

and a damper flap assembly mounted on the fan housing, the damper flap assembly including:

a mounting plate having an opening through which the air passes and a flange surrounding the opening;

a damper flap suspended by a hinge at an upper edge and pivotal about the upper edge so as to extend in a closed position across the opening with an outer peripheral portion of the damper flap engaging the flange around the opening;

the damper flap being movable to an open position under forward air flow from the fan by pivoting on the hinge away from the flange;

and a resilient deformable seal between the outer peripheral portion of the damper flap and the flange arranged to seal the damper flap to prevent reverse flow of air through the fan housing.
2. The fan construction according to claim wherein the seal is carried on the outer peripheral portion of the damper flap.
3. The fan construction according to claim 1 wherein the seal comprises a deformable fin.
4. The fan construction according to claim 1 wherein the mounting plate includes a top cover extending from the hinge over the top of the damper flap.
5. The fan construction according to claim 4 wherein top cover has down-turned flange to engage the damper flap and prevent pivotal movement of the damper flap beyond a predetermined angle.
6. The fan construction according to claim 1 wherein there is provided an abutment member for holding the damper flap in a slightly open position against opposing wind forces when the fan is operating at a low speed.
7. The fan construction according to claim 1 wherein the abutment member is retractable to allow closing of the damper flap.
8. The fan construction according to claim 6 wherein the abutment member is operable by a remote control device.
9. The fan construction according to claim 1 wherein there is provided a latch for providing a closing force for holding the damper flap in the closed position.
10. The fan construction according to claim 9 wherein the latch comprises a magnetic strip around the periphery of the damper flap and/or a magnet at the bottom of the flap.
11. The fan construction according to claim 1 wherein the damper flap comprises a flat panel which may be insulated.
12. The fan construction according to claim 1 wherein the damper flap assembly is mounted on outside end of the fan housing.
13. The fan construction according to claim 1 wherein the fan housing has an additional louver closure,
14. The fan construction according to claim 1 wherein the damper flap assembly is mounted on the fan housing at an inner end.
15. The fan construction according to claim 1 wherein there is provided a heating wire for heating the seal to prevent freezing.
16. The fan construction according to claim 1 wherein the air inlets are arranged on the wall and/or at the ceiling of the containment area communicating with a roof space above the containment area.
17. The fan construction according to claim 16 wherein each air inlet includes a filter assembly carried in the roof space.
18. The fan construction according to claim 1 wherein, apart from the inlets and the extraction fans, the containment area is sealed against ingress of
19 pathogen containing air.

19. A fan construction comprising:
a fan housing;

a fan mounted in the housing;

the fan being operable at high speed and at low speed;

and a damper flap assembly mounted on the fan housing, the damper flap assembly including:

a mounting plate having an opening through which the air passes and a flange surrounding the opening;

a damper flap suspended by a hinge at an upper edge and pivotal about the upper edge so as to extend in a closed position across the opening with an outer peripheral portion of the damper flap engaging the flange around the opening;

the damper flap being movable to an open position under forward air flow from the fan when the fan is operating at low or high speed by pivoting on the hinge away from the flange;

wherein there is provided an abutment member for holding the damper flap in a slightly open position against opposing wind forces when the fan is operating at low speed.
20. The fan construction according to claim 19 wherein the abutment member is retractable to allow closing of the damper flap.
21. The fan construction according to claim 20 wherein the abutment is operable by a remote control device.
CA 2725245 2010-12-13 2010-12-13 Extraction fan assembly for an animal husbandry barn Abandoned CA2725245A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CA 2725245 CA2725245A1 (en) 2010-12-13 2010-12-13 Extraction fan assembly for an animal husbandry barn
CA2748452A CA2748452C (en) 2010-12-13 2011-07-29 A damper flap assembly for an extraction fan
CA2927369A CA2927369C (en) 2010-12-13 2011-07-29 Apparatus and method for controlling air flow of an extraction fan
CA2822971A CA2822971C (en) 2010-12-13 2011-07-29 Apparatus and method for controlling air flow of an extraction fan
PCT/CA2011/050752 WO2012079167A1 (en) 2010-12-13 2011-12-07 Extraction fan assembly including a damper that closes firmly when the fan is not running and reduces the pressure drop when the fan is running at full speed
EP11847989.8A EP2652413A1 (en) 2010-12-13 2011-12-07 Extraction fan assembly including a damper that closes firmly when the fan is not running and reduces the pressure drop when the fan is running at full speed
CN201180065888.1A CN103348191B (en) 2010-12-13 2011-12-07 It is included in firm closure when fan does not runs and reduces the scavenger fan assembly of air door of pressure drop when fan full speed running

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2725245 CA2725245A1 (en) 2010-12-13 2010-12-13 Extraction fan assembly for an animal husbandry barn

Publications (1)

Publication Number Publication Date
CA2725245A1 true CA2725245A1 (en) 2012-06-13

Family

ID=46232306

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2725245 Abandoned CA2725245A1 (en) 2010-12-13 2010-12-13 Extraction fan assembly for an animal husbandry barn

Country Status (1)

Country Link
CA (1) CA2725245A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103202241A (en) * 2013-05-06 2013-07-17 青岛市畜牧兽医研究所 Multifunctional diversion plate device in breeding industry

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103202241A (en) * 2013-05-06 2013-07-17 青岛市畜牧兽医研究所 Multifunctional diversion plate device in breeding industry

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Date Code Title Description
FZDE Dead

Effective date: 20161214