WO2002052112A1 - A ventilation system for a greenhouse and the like - Google Patents

A ventilation system for a greenhouse and the like Download PDF

Info

Publication number
WO2002052112A1
WO2002052112A1 PCT/AU2001/001667 AU0101667W WO02052112A1 WO 2002052112 A1 WO2002052112 A1 WO 2002052112A1 AU 0101667 W AU0101667 W AU 0101667W WO 02052112 A1 WO02052112 A1 WO 02052112A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
greenhouse
radial portion
ventilation
roof structure
Prior art date
Application number
PCT/AU2001/001667
Other languages
French (fr)
Inventor
Robert Strati
Original Assignee
Robert Strati
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 Robert Strati filed Critical Robert Strati
Priority to AU2002224644A priority Critical patent/AU2002224644B2/en
Publication of WO2002052112A1 publication Critical patent/WO2002052112A1/en

Links

Classifications

    • 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
    • F24F7/02—Roof ventilation
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A01G9/241—Arrangement of opening or closing systems for windows and ventilation panels
    • A01G9/242—Arrangement of opening or closing systems for windows and ventilation panels for greenhouses with flexible coverings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

Definitions

  • the present invention relates to a ventilation system for a greenhouse or the like building structure and, in particular, to a greenhouse utilizing a naturally forced air ventilation substructure to facilitate efficient circulation of air and heat throughout the greenhouse.
  • Some commercial greenhouses utilize expensive automated ventilation systems which present a cost burden, both in purchase and in maintenance or repair. Although in those places or during those times of very low wind such automated ventilation systems are essential, automated ventilation systems need not be used in all of the circumstances in which they are presently being used, because in at least some of those circumstances, sufficient ventilation of the greenhouse may occur by constructing the greenhouse in such a way as to utilize naturally forced air ventilation. This is particularly so in regions of at least moderate wind or during periods of at least moderate wind where cost savings may be made by switching off the automated ventilation systems and allowing the wind to draw air through specially formed ventilating substructures in the greenhouse.
  • a ventilation system for a building requiring naturally forced air ventilation and having an arched roof structure comprising:
  • a roof substructure formed of a central, cut-out radial portion of the arched roof structure, the substructure defining a central opening in the curved face of the radial portion and an air vent opening in each one of respective opposed faces of the radial portion through which air may pass into and out of the greenhouse, and (ii) cover means adapted for controlling the passage of air through the air vent openings.
  • the cover means comprises a curtain over each one of the air vent openings.
  • the ventilation system includes a gutter located adjacent the apex of the radial portion.
  • Fig 1 is a perspective view of an arched roof structure of a greenhouse incorporating a ventilation system according to a preferred embodiment of the present invention
  • Fig 2 is a perspective view of a ventilating roof substructure of the arched roof structure of Fig 1 defining air vent openings for facilitating the circulation of air throughout the greenhouse
  • Fig 3 is a front elevational view of the arched roof structure of Fig 1 which depicts a roll-up curtain over each one of the air vent openings and a gutter therebetween, both of the roll-up curtains being fully extended,
  • Fig 4 is a view similar to that of Fig 3 but in which both of the roll-up curtains are fully retracted so as to allow optimal air flow out of the greenhouse
  • Fig 5 is a view similar to that of Fig 3 but in which only one of the roll-up curtains is retracted, the other being fully extended, and
  • Fig 6 is a view similar to that of Fig 3 but in which both of the roll-up curtains are partly retracted.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The arched roof structure 10 shown in the Figures 1 to 6 is mounted on posts 12 which define the four corners of the greenhouse.
  • the front and rear arch sections 14, 16 of the roof structure 10 are identical and comprise a bottom straight rail 18, a top arch rail 20, and a series of strengthening braces 22 linking the bottom and top rails 18, 20.
  • the two most central braces 22a, 22b form a V-shaped construct and the V-shaped construct of front arch section 14 is connected to the V-shaped construct of rear arch section 16 by a pair of spanning rails 24, 26 to define a roof substructure formed of a central, cut-out radial portion 28 of the arched roof structure 10.
  • a transparent, air impermeable, roof cover, such as glass, extends over each of the two segments of the arched roof structure that are on either side of the radial portion 28.
  • Each of the opposed faces of the radial portion 28 define an air vent opening 30, 32 through which air may pass into and out of the greenhouse.
  • Roll-up curtains 34, 36 supported on each of the spanning rails 24, 26 can be manipulated to control the passage of air through the air vent openings 30, 32. Manipulation of the curtains 34, 36 may be done manually or by automated means.
  • a gutter 38 also spans the front and rear sections 14, 16 and is located adjacent the apex or converging point of the radial portion 28.
  • the gutter 38 is also of such strength as to support the weight of an average person, a feature necessary when that person is fitting roof covers.
  • FIG 3 shows the arched roof structure 10 with both of the roll-up curtains 34, 36 fully extended so as to prevent air flow into and out of the greenhouse. This may suit constant windy conditions in which the wind direction fluctuates and which may otherwise force air into the greenhouse.
  • Figure 4 shows the arched roof structure 10 with both of the roll-up curtains 34, 36 fully retracted so as to allow optimal air flow out of the greenhouse. This may suit non-windy conditions, and allows rising heat and evaporated water to exit the greenhouse through both air vent openings 30, 32.
  • Figure 5 shows the arched roof structure 10 with the roll-up curtain 34 fully extended and the roll-up curtain 36 fully retracted so as to allow air flow only through the air vent opening 32. This may suit constant windy conditions in which the wind is travelling from right to left (see arrow A showing direction of wind).
  • Figure 6 shows the arched roof structure 10 with both of the roll-up curtains 34, 36 partly retracted so as to allow partial air flow out of the greenhouse. This may suit milder wind conditions.
  • the ventilation system may be retrofitted to any existing arched roof structure of a greenhouse.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Greenhouses (AREA)

Abstract

A ventilation system for a greenhouse requiring naturally forced air ventilation and having an arched roof structure (10), comprises a roof substructure (22a, 22b, 24, 26) formed of a central, cut-out radial portion (28) of the arched roof structure, the substructure defining an air vent opening (30, 32) in each one of respective opposed faces of the radial portion (28), and cover means (34, 36) adapted for controlling the passage of air through the air vent openings (30, 32).

Description

A VENTILATION SYSTEM FOR A GREENHOUSE AND THE LIKE TECHNICAL FIELD
The present invention relates to a ventilation system for a greenhouse or the like building structure and, in particular, to a greenhouse utilizing a naturally forced air ventilation substructure to facilitate efficient circulation of air and heat throughout the greenhouse.
For ease of understanding and brevity, the present invention will be described with reference to greenhouses, although it is to be understood that the invention is not to be limited thereto but may apply to any building structure in which naturally forced air ventilation is sought. BACKGROUND ART
A problem with many naturally forced air ventilation systems operating in greenhouses is that they allow the wind to force air into the greenhouse and thus interfere with the ideal ventilating and heating conditions required within the greenhouse. Although such greenhouses are normally built to take account of the local wind conditions, variations in wind direction are not uncommon, and the cost of customising the construction of the greenhouse to account for the local wind conditions adds to the overall cost of construction.
Some commercial greenhouses utilize expensive automated ventilation systems which present a cost burden, both in purchase and in maintenance or repair. Although in those places or during those times of very low wind such automated ventilation systems are essential, automated ventilation systems need not be used in all of the circumstances in which they are presently being used, because in at least some of those circumstances, sufficient ventilation of the greenhouse may occur by constructing the greenhouse in such a way as to utilize naturally forced air ventilation. This is particularly so in regions of at least moderate wind or during periods of at least moderate wind where cost savings may be made by switching off the automated ventilation systems and allowing the wind to draw air through specially formed ventilating substructures in the greenhouse.
Whilst some greenhouses rely exclusively on wind forced air ventilation, they do so by utilizing ventilation structures that are not controllable or, if controllable, do not allow for efficient escape of air from the greenhouse in all wind directions. Air circulation is often limited in these greenhouses because of improper location of air vents or, more likely, because of the overall structure of the greenhouse which is not amendable to efficient circulation of air therethrough. It is an object of the present invention to overcome, or at least substantially ameliorate, the disadvantages and shortcomings of the prior art.
DISCLOSURE OF THE INVENTION
It has now been found by the present inventor that efficient wind forced circulation of air, and thus heat, throughout a greenhouse may be achieved in an arch roofed greenhouse utilizing a ventilating roof substructure that comprises a central, cut-out radial portion of the arched roof. Controllable cover means, such as curtains or shutters, may be utilized to control the direction of air passage through the ventilating roof substructure of the arched roof. According to the present invention, there is provided a ventilation system for a building requiring naturally forced air ventilation and having an arched roof structure, the system comprising:
(i) a roof substructure formed of a central, cut-out radial portion of the arched roof structure, the substructure defining a central opening in the curved face of the radial portion and an air vent opening in each one of respective opposed faces of the radial portion through which air may pass into and out of the greenhouse, and (ii) cover means adapted for controlling the passage of air through the air vent openings. Preferably, the cover means comprises a curtain over each one of the air vent openings. In a further preferred form, the ventilation system includes a gutter located adjacent the apex of the radial portion. BRIEF DESCRIPTION OF THE DRAWINGS
In order that the invention may be readily understood and put into practical effect, reference will now be made to the accompanying drawings, in which:
Fig 1 is a perspective view of an arched roof structure of a greenhouse incorporating a ventilation system according to a preferred embodiment of the present invention, Fig 2 is a perspective view of a ventilating roof substructure of the arched roof structure of Fig 1 defining air vent openings for facilitating the circulation of air throughout the greenhouse, Fig 3 is a front elevational view of the arched roof structure of Fig 1 which depicts a roll-up curtain over each one of the air vent openings and a gutter therebetween, both of the roll-up curtains being fully extended,
Fig 4 is a view similar to that of Fig 3 but in which both of the roll-up curtains are fully retracted so as to allow optimal air flow out of the greenhouse, Fig 5 is a view similar to that of Fig 3 but in which only one of the roll-up curtains is retracted, the other being fully extended, and
Fig 6 is a view similar to that of Fig 3 but in which both of the roll-up curtains are partly retracted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The arched roof structure 10 shown in the Figures 1 to 6 is mounted on posts 12 which define the four corners of the greenhouse.
The front and rear arch sections 14, 16 of the roof structure 10 are identical and comprise a bottom straight rail 18, a top arch rail 20, and a series of strengthening braces 22 linking the bottom and top rails 18, 20. The two most central braces 22a, 22b form a V-shaped construct and the V-shaped construct of front arch section 14 is connected to the V-shaped construct of rear arch section 16 by a pair of spanning rails 24, 26 to define a roof substructure formed of a central, cut-out radial portion 28 of the arched roof structure 10. A transparent, air impermeable, roof cover, such as glass, extends over each of the two segments of the arched roof structure that are on either side of the radial portion 28. Each of the opposed faces of the radial portion 28 define an air vent opening 30, 32 through which air may pass into and out of the greenhouse. Roll-up curtains 34, 36 supported on each of the spanning rails 24, 26 can be manipulated to control the passage of air through the air vent openings 30, 32. Manipulation of the curtains 34, 36 may be done manually or by automated means.
A gutter 38 also spans the front and rear sections 14, 16 and is located adjacent the apex or converging point of the radial portion 28. The gutter 38 is also of such strength as to support the weight of an average person, a feature necessary when that person is fitting roof covers.
Figure 3 shows the arched roof structure 10 with both of the roll-up curtains 34, 36 fully extended so as to prevent air flow into and out of the greenhouse. This may suit constant windy conditions in which the wind direction fluctuates and which may otherwise force air into the greenhouse.
Figure 4 shows the arched roof structure 10 with both of the roll-up curtains 34, 36 fully retracted so as to allow optimal air flow out of the greenhouse. This may suit non-windy conditions, and allows rising heat and evaporated water to exit the greenhouse through both air vent openings 30, 32.
Figure 5 shows the arched roof structure 10 with the roll-up curtain 34 fully extended and the roll-up curtain 36 fully retracted so as to allow air flow only through the air vent opening 32. This may suit constant windy conditions in which the wind is travelling from right to left (see arrow A showing direction of wind).
Figure 6 shows the arched roof structure 10 with both of the roll-up curtains 34, 36 partly retracted so as to allow partial air flow out of the greenhouse. This may suit milder wind conditions.
It is an advantage of the present invention that the ventilation system may be retrofitted to any existing arched roof structure of a greenhouse.
It is another advantage of the present invention that it provides a centrally disposed ventilation system that allows the central axis of the arched roof to be openable on all suitable occasions.
It is yet another advantage of the present invention that it facilitates efficient circulation of air, and thus heat, throughout the greenhouse, and escape of air from the greenhouse when required in all wind conditions.
Various modifications may be made in details of design and construction without departing from the scope and ambit of the invention.

Claims

1 . A ventilation system for a building requiring naturally forced air ventilation and having an arched roof structure, the system comprising:
(i) a roof substructure formed of a central, cut-out radial portion of the arched roof structure, the substructure defining a central opening in the curved face of the radial portion and an air vent opening in each one of respective opposed faces of the radial portion through which air may pass into and out of the greenhouse, and
(ii) cover means adapted for controlling the passage of air through the air vent openings.
2. The ventilation system of claim 1 wherein the cover means comprises a curtain over each one of the air vent openings.
3. The ventilation system of claim 1 and including a gutter located adjacent the apex of the radial portion.
PCT/AU2001/001667 2000-12-22 2001-12-21 A ventilation system for a greenhouse and the like WO2002052112A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002224644A AU2002224644B2 (en) 2000-12-22 2001-12-21 A ventilation system for a greenhouse and the like

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU72483/00A AU737953B3 (en) 2000-12-22 2000-12-22 A ventilation system for a greenhouse and the like
AU72483/00 2000-12-22

Publications (1)

Publication Number Publication Date
WO2002052112A1 true WO2002052112A1 (en) 2002-07-04

Family

ID=3755160

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2001/001667 WO2002052112A1 (en) 2000-12-22 2001-12-21 A ventilation system for a greenhouse and the like

Country Status (2)

Country Link
AU (1) AU737953B3 (en)
WO (1) WO2002052112A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7074124B2 (en) 2002-12-24 2006-07-11 Edwards & Williams Greenhouses Ltd. Ventilation system
ITTO20130494A1 (en) * 2013-06-14 2014-12-15 Consiglio Per La Ricerca E La Sperimentazione GREENHOUSE WITH NATURAL VENTILATION
US9854751B2 (en) 2013-12-20 2018-01-02 The Royal Institution For The Advancement Of Learning/Mcgill University Greenhouse and method for cooling same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109197271A (en) * 2018-09-28 2019-01-15 中国地质大学（武汉） A kind of greenhouse intelligent ventilating system based on LoRa technology
CN114128537A (en) * 2021-10-25 2022-03-04 农业农村部规划设计研究院 Greenhouse environment control method and system and greenhouse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601136A (en) * 1982-07-21 1986-07-22 Watanabe Pipe Co., Ltd. Semicircular arching roof type pipe-frame greenhouse with monitor roof-like protrusion
US4672889A (en) * 1985-06-24 1987-06-16 Lynch Gary M Building structures
AU2198288A (en) * 1987-09-08 1989-03-23 Gary Michael Lynch Improvements to vent assemblies
AU6377898A (en) * 1997-05-01 1998-11-05 Gary Michael Lynch Roof ventilation system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4601136A (en) * 1982-07-21 1986-07-22 Watanabe Pipe Co., Ltd. Semicircular arching roof type pipe-frame greenhouse with monitor roof-like protrusion
US4672889A (en) * 1985-06-24 1987-06-16 Lynch Gary M Building structures
AU2198288A (en) * 1987-09-08 1989-03-23 Gary Michael Lynch Improvements to vent assemblies
AU6377898A (en) * 1997-05-01 1998-11-05 Gary Michael Lynch Roof ventilation system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7074124B2 (en) 2002-12-24 2006-07-11 Edwards & Williams Greenhouses Ltd. Ventilation system
ITTO20130494A1 (en) * 2013-06-14 2014-12-15 Consiglio Per La Ricerca E La Sperimentazione GREENHOUSE WITH NATURAL VENTILATION
WO2014199283A1 (en) * 2013-06-14 2014-12-18 Consiglio Per La Ricerca E La Sperimentazione In Agricoltura - Cra Greenhouse with natural ventilation
US9854751B2 (en) 2013-12-20 2018-01-02 The Royal Institution For The Advancement Of Learning/Mcgill University Greenhouse and method for cooling same

Also Published As

Publication number Publication date
AU737953B3 (en) 2001-09-06

Similar Documents

Publication Publication Date Title
EP0467876A2 (en) High-rise building
US4621569A (en) Extractor ventilator for industrial buildings
KR101911027B1 (en) Plastic house with multi ventilation structure frame
US20040253919A1 (en) Ventilation barrier
US4730552A (en) Vent assembly
KR101907162B1 (en) A SunShield
AU737953B3 (en) A ventilation system for a greenhouse and the like
KR20160087164A (en) Energy Saving Building Circulation System
US4316405A (en) Greenhouse and solarium structurers and related method
EP2292985B1 (en) Ventilation arrangements
AU2002224644B2 (en) A ventilation system for a greenhouse and the like
DK0555658T3 (en) Air conditioner for a building
EP3845718B1 (en) A roof window system with a ventilation unit mounted adjacent to the roof window, and a method of providing ventilation for a building
CN104642004B (en) Aeration type heliogreenhouse
WO1993025779A9 (en) Ventilated ridge of a sloping glazed roof
WO1993025779A1 (en) Ventilated ridge of a sloping glazed roof
AU2002224644A1 (en) A ventilation system for a greenhouse and the like
WO2012010825A1 (en) Ventilation arrangements
CN1110738A (en) Double-ventilating light type roofing broad
CN113944284B (en) Thermal induction reinforced ventilation building structure
KR200447519Y1 (en) Ventilation equipment for open type arcade
EP0588619B1 (en) A lighting apparatus
KR20210034234A (en) Multi-stage framed frame joining structure for vinyl house
CN101946052A (en) Housing system
JP2004222510A (en) Ventilating apparatus for greenhouse

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2002224644

Country of ref document: AU

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 69(1) EPC (EPO FORM 1205 DATED 16.10.03)

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP

WWG Wipo information: grant in national office

Ref document number: 2002224644

Country of ref document: AU