WO2018009968A1 - A housing for a fan - Google Patents

A housing for a fan

Info

Publication number
WO2018009968A1
WO2018009968A1 PCT/AU2017/050712 AU2017050712W WO2018009968A1 WO 2018009968 A1 WO2018009968 A1 WO 2018009968A1 AU 2017050712 W AU2017050712 W AU 2017050712W WO 2018009968 A1 WO2018009968 A1 WO 2018009968A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
housing
cover
air
portion
diffusing
Prior art date
Application number
PCT/AU2017/050712
Other languages
French (fr)
Inventor
James Lazenby
Original Assignee
Blackbird Enterprises Pty Ltd
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

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE DISPLACEMENT PUMPS
    • F04D25/00Pumping installations or systems
    • F04D25/02Units comprising pumps and their driving means
    • F04D25/08Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/12Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation the unit being adapted for mounting in apertures
    • F04D25/14Units 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08Air-flow control members, e.g. louvres, grilles, flaps, guide plates
    • F24F13/10Air-flow control members, e.g. louvres, grilles, flaps, guide plates movable, e.g. damper
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures
    • F24F7/007Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures with forced flow
    • F24F7/013Ventilation, e.g. by means of wall-ducts or systems using window or roof apertures with forced flow using wall or window fans, displacing air through the wall or window possibly through a grill or through a shutter or flap

Abstract

The invention relates to a housing for a fan, wherein an end of the housing is provided with a cover, the cover being movable between a condition where the cover prevents air flow through the housing and a condition where the cover is removed from the path of the air flow.

Description

A HOUSING FOR A FAN [0001] The present invention relates to a housing for a fan.

[0002] Ventilation systems for agricultural buildings such as poultry coops or cattle sheds typically have inline fans, with dampers in the form of shutters or louvres which interfere with the flow of air creating turbulence and reducing efficiency of the fan. Further, the dampers are difficult to clean and any accumulated grime can lead to corrosion of the ventilation system and reduced hygiene for the housed animals.

[0003] Examples of the invention seek to avoid or at least ameliorate problems of existing ventilation systems.

[0004] According to a first aspect of the present invention, there is provided a housing for a fan, wherein an end of the housing is provided with a cover, the cover being movable between a condition where the cover prevents air flow through the housing and a condition where the cover is removed from the path of the air flow.

[0005] According to another aspect of the present invention, there is provided a ventilation device having a housing for a fan and a cover provided on an end of the housing, the cover being movable between a condition where the cover prevents air flow through the housing and a condition where the cover is removed from the path of the air flow.

[0006] In another preferred embodiment, the cover is sealably engageable with the end of the housing.

[0007] In a preferred embodiment, the housing has a air-diffusing portion and a shroud for supporting the fan, one end of the air-diffusing portion being connected to an end of the shroud such that the fan directs air through the shroud and air-diffusing portion. The cover can be provided on the end of the air-diffusing portion.

[0008] In another preferred embodiment, the cover is pivotably attached to the end of the housing. The cover can be pivotably attached to the end of the air-diffusing portion. More preferably, the cover is opaque. [0009] In a preferred embodiment, the housing has at least one actuator to move the cover between said conditions. Preferably, the at least one actuator is a linear actuator.

[0010] In another preferred embodiment, the air-diffusing portion has a circumferential wall. The circumferential wall can be of frustoconical shape which diverges in a direction towards the cover. The angle of the wall relative to an axis of the air-diffusing portion can be between 5° to 10°. Preferably, the angle of the wall relative to the axis of the air-diffusing portion is 8.5°.

[0011] In another preferred embodiment, the circumferential wall has an inner surface and an outer surface and at least one cavity therebetween for providing insulating properties. The at least one cavity can have insulating foam therein.

[0012] In another preferred embodiment, the cover has an inner side and an outer side and at least one cavity therebetween for providing insulating properties. The at least one cavity can have insulating foam therein.

[0013] In another preferred embodiment, the housing or ventilation device is for controlling air exhaust from a building.

[0014] According to a further aspect of the present invention, there is provided a building having a housing or ventilation device as described above, the housing or ventilation device being mounted in a wall of the building and wherein the cover is pivotably attached to a top portion of the end of the housing or ventilation device when so mounted. Preferably, the building is for housing poultry.

[0015] The present invention will now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which:

[0016] Figure 1 is a perspective view of a housing for a fan in an open condition according to a preferred embodiment of the present invention;

[0017] Figure 2 is a perspective view of the housing of Figure 1 in a closed condition; [0018] Figure 3 is a cross-sectional view of the housing of Figure 2; [0019] Figure 4 is an enlarged view of a portion of the housing shown in Figure 3; and

[0020] Figure 5 is a perspective view of housings of Figures 1 to 4 for controlling air exhaust from a building according to an example use of the present invention.

[0021] Figures 1 to 4 show a housing 2 for a fan 4 in accordance with an embodiment of the present invention where an end of the housing 2 is provided with a cover 6. Figure 5 shows an example use of the housings 2 being mountable in a wall to be used to control air exhaust from a building 24 such that the environment can be effectively and efficiently controlled for raising farm animals such as poultry or cattle. Advantageously, the housings 2 promote the supply of fresh air and exhaust undesirable gases while preventing unnecessary heat loss, moisture condensation and power consumption.

[0022] The cover 6 is movable between a condition where the cover 6 prevents air flow through the housing 2 by engaging with an end of the housing 2 and a condition where the cover 6 is removed from the path of the air flow. Advantageously, the cover 6 can be moved to such a position during operation where the cover 6 does not interfere with the flow of air thereby maximising the efficiency of the fan 4 as apparent in Figure 1. Further, the cover 6 can be easily cleaned in comparison to prior art devices for dampening the flow of air in ventilation systems for agriculture buildings.

[0023] The housing 2 has an air-diffusing portion 8 connected to a shroud 10 for supporting the fan 4 such that air can be directed through the air-diffusion portion 8 and shroud 10. The cover 6 is movable by a linear actuator 14, which extends and retracts an arm connected at one end to the hinge assembly 12 substantially along an axis of the air-diffusing portion 8 thereby closing and opening the cover 6. As shown in the Figures, the cover 6 is pivotably attached by a hinge assembly 12 from a top portion of the air-diffusing portion 8 such that the cover 6, in the open condition shown in Figure 1, can act as a shade to prevent direct sunlight from entering the housing 2 when in use. Controlling the amount of light entering a building 24 is advantageous as the light can affect the reproductive or sleeping cycles of the farm animals, in particular poultry. [0024] The air-diffusing portion 8 has a circumferential wall 16 which diffuses the air to reduce any back-pressure on the fan blades, thereby increasing the efficiency of the fan 4 and reducing power consumption. In a preferred embodiment, the circumferential wall 16 of the air-diffusing portion 8 has a frustoconical shape which diverges in a direction towards the cover 6 although it can be understood by a person skilled in the art that other shapes, for example a cylindrical wall, which diffuse the air can also be used. It is preferred that the angle of the circumferential wall 16 relative to the axis of the air-diffusing portion 8 is 8.5° as shown in the Figures for optimum reduction of back-pressure although the advantageous effects of the frustoconically shaped circumferential wall 16 can still be achieved if the angle is between 5° to 10°.

[0025] The circumferential wall 16 can have an inner and outer surface with at least one cavity 18 therebetween as shown more particularly in Figures 3 and 4. The circumferential wall 16 can be formed of a light but strong material such as polyurethane plastic which is cost- effective and easily cleaned. Further, the cover 6 has an inner and outer side with at least one cavity 20 therebetween. When the cover 6 is in the closed condition, the cavities 18, 20 can provide insulating properties thereby reducing heating costs and preventing condensation of moisture. To increase the insulating properties, the cavities 18, 20 can be filled with insulating material, for example, polyurethane foam.

[0026] The cover 6 has sealing means 22, as shown in Figures 3 and 4, for preventing air egress or ingress between the cover 6 and circumferential wall 16 when the cover 6 is in the closed condition thereby preventing heat loss in cold climates and such that a specific negative pressure in a building 24 can be easily maintained. The sealing means 22 can be made of any appropriate sealing material, such as silicon.

[0027] While various embodiments of the present invention have been described above, it should be understood that they have been presented by way of example only, and not by way of limitation. It will be apparent to a person skilled in the relevant art that various changes in form and detail can be made therein without departing from the spirit and scope of the invention. Thus, the present invention should not be limited by any of the above described exemplary embodiments. [0028] Throughout this specification and the claims which follow, unless the context requires otherwise, the word "comprise", and variations such as "comprises" and "comprising", will be understood to imply the inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.

[0029] The reference in this specification to any prior publication (or information derived from it), or to any matter which is known, is not, and should not be taken as an acknowledgment or admission or any form of suggestion that that prior publication (or information derived from it) or known matter forms part of the common general knowledge in the field of endeavour to which this specification relates.

Claims

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:
1. A housing for a fan, wherein an end of the housing is provided with a cover, the cover being movable between a condition where the cover prevents air flow through the housing and a condition where the cover is removed from the path of the air flow.
2. A housing according to claim 1, wherein the cover is sealably engageable with the end of the housing.
3. A housing according to claim 1 or claim 2, further having a air-diffusing portion and a shroud for supporting the fan, one end of the air-diffusing portion being connected to an end of the shroud such that the fan directs air through the shroud and air- diffusing portion.
4. A housing according to any one of the preceding claims, wherein the cover is provided on an end of the air-diffusing portion.
5. A housing according to any one of the preceding claims, wherein the cover is pivotably attached to the end of the housing.
6. A housing according to claim 5, wherein the cover is pivotably attached to an end of the air-diffusing portion.
7. A housing according to any one of the preceding claims, wherein the cover is opaque.
8. A housing according to any one of the preceding claims, wherein the housing has at least one actuator to move the cover between said conditions.
9. A housing according to claim 8, wherein the at least one actuator is a linear actuator.
10. A housing according to any one of the preceding claims when dependent on claim 3, wherein the air-diffusing portion has a circumferential wall of frustoconical shape which diverges in a direction towards the cover.
11. A housing according to claim 10, wherein an angle of the circumferential wall relative to an axis of the air-diffusing portion is between 5° to 10°.
12. A housing according to claim 11 , wherein the angle of the wall relative to the axis of the air-diffusing portion is 8.5°.
13. A housing according to any one of the claims 10 to 12, wherein the circumferential wall has an inner surface and an outer surface and at least one cavity therebetween.
14. A housing according to any one of the preceding claims, wherein the cover has an inner side and an outer side and at least one cavity therebetween.
15. A housing according to claim 13 or claim 14, wherein the at least one cavity has insulating material therein.
16. A housing according to any one of the preceding claims, being for controlling air exhaust from a building.
17. A building having a housing according to any one of the preceding claims, the housing being mounted in a wall of the building and wherein the cover is pivotably attached to a top portion of the end of the housing when so mounted.
18. A building according to claim 17, being for housing poultry.
19. A ventilation device having a housing for a fan and a cover provided on an end of the housing, the cover being movable between a condition where the cover prevents air flow through the housing and a condition where the cover is removed from the path of the air flow.
PCT/AU2017/050712 2016-07-11 2017-07-11 A housing for a fan WO2018009968A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2016902712 2016-07-11
AU2016902712 2016-07-11

Publications (1)

Publication Number Publication Date
WO2018009968A1 true true WO2018009968A1 (en) 2018-01-18

Family

ID=60951585

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2017/050712 WO2018009968A1 (en) 2016-07-11 2017-07-11 A housing for a fan

Country Status (1)

Country Link
WO (1) WO2018009968A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5921862A (en) * 1998-01-30 1999-07-13 Consol, Inc. Air flow reversal prevention door assembly
US6705251B2 (en) * 2001-02-09 2004-03-16 Ctb Ip, Inc. Method for enhancing poultry production
US20120149294A1 (en) * 2010-12-13 2012-06-14 Robert Labrecque 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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5921862A (en) * 1998-01-30 1999-07-13 Consol, Inc. Air flow reversal prevention door assembly
US6705251B2 (en) * 2001-02-09 2004-03-16 Ctb Ip, Inc. Method for enhancing poultry production
US20120149294A1 (en) * 2010-12-13 2012-06-14 Robert Labrecque 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

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