EP0899518A1 - Belüftungssystem für Viehställe - Google Patents

Belüftungssystem für Viehställe Download PDF

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Publication number
EP0899518A1
EP0899518A1 EP98460033A EP98460033A EP0899518A1 EP 0899518 A1 EP0899518 A1 EP 0899518A1 EP 98460033 A EP98460033 A EP 98460033A EP 98460033 A EP98460033 A EP 98460033A EP 0899518 A1 EP0899518 A1 EP 0899518A1
Authority
EP
European Patent Office
Prior art keywords
chimney
air
ventilation system
boxes
flap
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.)
Granted
Application number
EP98460033A
Other languages
English (en)
French (fr)
Other versions
EP0899518B1 (de
Inventor
Pierre Lesnard
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.)
I-TEK SA
Asserva SAS
Original Assignee
I-TEK SA
Asserva SAS
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
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Application filed by I-TEK SA, Asserva SAS filed Critical I-TEK SA
Publication of EP0899518A1 publication Critical patent/EP0899518A1/de
Application granted granted Critical
Publication of EP0899518B1 publication Critical patent/EP0899518B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring

Definitions

  • the present invention relates to a building ventilation system comprising at least one row of boxes intended to be occupied by at least one animal.
  • the present invention applies in particular to the ventilation of a pigsty.
  • Aeration systems known for a pigsty include for example chimneys which are mounted between two contiguous boxes of the same row, and which are provided for sucking up pure air circulating under said row via a air inlet.
  • These ventilation systems also include, for example at the end of row, mechanical means coupled to an air outlet which are provided to create a depression inside the pigsty, so as to allow aspiration by said chimneys of the air admitted via said inlet.
  • a major drawback of these systems is that a fraction large part of the air flow leaving each chimney is mainly drawn in direction of said extraction means. This may result in insufficient ventilation of the pigsty at the level of the huts, therefore for the animals occupying them.
  • the object of the present invention is to provide a ventilation system for a building comprising at least one row of boxes intended to be occupied by at at least one animal, said system comprising at least one communicating air inlet with the respective lower chimney entrances below said boxes, at less an air outlet from said building coupled to means for sucking air in each chimney being provided above said boxes, the upper outlet of each chimney being provided under a ceiling of said building, which makes it possible to remedy this disadvantage.
  • an aeration system is such that each chimney is provided with means for regulating the speed of the air drawn in to said chimney outlet at a set value, so that said value allows the ventilation of said ceiling against the top of each chimney.
  • said regulation means include a unit designed to control means provided for varying the passage section for the air drawn into each chimney between said inlet and said chimney outlet according to at least one characteristic of the ambient air in said building, so that said air suction speed at the outlet of each chimney is maintained at said set value.
  • said means for varying the passage section in each chimney consist of a flap which is connected to an arm forming a lever for the latter, said flap and said arm being mounted integral a fixed axis with respect to each chimney, said arm passing through said inlet of the corresponding chimney and being connected to the outlet of said control unit by through actuating means, said control unit being provided for control said actuating means as a function of at least one value supplied at the input of said unit, so as to rotate each flap via said arm corresponding.
  • said actuating means consist of a rod provided for actuating said or each arm in rotation on said pivot axis.
  • said ventilation system comprises below said or each row of boxes a waterproof sheath which is connected edge to edge, via at least one branch, to each chimney entry.
  • Figs la and 1b there is shown partially a row 1 of boxes 2 and 3, for example of piggery, which are located under a ceiling 4 of the building concerned.
  • This ceiling 4 is preferably isolated in its entirety with respect to the exterior of said building.
  • Each box 2, 3 of said row 1 has a floor 5 of the type gratings designed to receive at least one animal. Only are visible in FIG. 1 them lateral sides 6 of the floor 5 of each box 2, 3.
  • each box 2, 3 is provided, under the floor 5 which delimits it, a container 7 for recovering the droppings which are produced by said or each animal occupying said box 2, 3 and flowing through said floor 5.
  • Each tank 7 has in its lower part an orifice 7a for the evacuation of said droppings.
  • Each orifice 7a opens into a common pipe 7b which is transverse to the lateral sides 6 of boxes 2 and 3 of said row 1.
  • This pipe 7b is provided to ensure the evacuation of the droppings coming from said orifices 7a at one end of said row 1, via suitable mechanical means (not shown in Fig. la for reasons of clarity).
  • a pit 7 'common to said row 1 is provided under said boxes 2 and 3, for the recovery of the manure flowing by each floor 5.
  • the bottom 8 of this pit 7 ' has been shown.
  • each row 1 of boxes 2 and 3 is provided with a ventilation system 9. This is designed to ventilate the space between each box 2, 3 of said row 1 and said ceiling 4.
  • a ventilation system 9 comprises several chimneys 11 which are each mounted astride the floors 5 of two boxes contiguous 2 and 3, for example at one of the front or rear ends thereof.
  • Each chimney 11 has in its lower part a flange 12 which is intended to rest on the floor 5 of each box 2 and 3 that it is intended to overlap.
  • Said ventilation system 9 also comprises at least one fresh air inlet (not shown), for example under the level of said floors 5, which is provided for communicate with a lower inlet orifice 13 of each chimney 11.
  • said inlet orifice 13 of each chimney 11 is flush with the lower edge of said lateral sides 6, in this example of production.
  • the outlet 14 of each chimney 11 it is located substantially below the ceiling 4 of the building.
  • said air inlet is intended to communicate with the space outside said tanks 7 and between said floors 5 and said bottom 8, so that the air admitted by said inlet under floors 5 is not in contact with said droppings.
  • the corresponding ventilation system 9 comprises in the pit 7 ′ a tight sheath 9a, which is designed to receive the pure air admitted in upstream through said inlet and which extends in a transverse direction relative to at said lateral sides 6 of boxes 2 and 3 of said row.
  • said sheath 9a has branches 9b which are each mounted edge to edge with the orifice inlet 13 of each chimney 11.
  • Said ventilation system further comprises, for example at the end of each row 1, mechanical means 11a coupled to an air outlet which are provided for create an air depression inside the pigsty, so as to allow aspiration by said chimneys 11 of the air admitted by said inlet.
  • suction means 11a for example consist of at least one exhaust fan.
  • each chimney 11 is provided with means 15 provided for varying, upstream of the outlet orifice 14 from said chimney 11, the pressure of the air which is sucked in.
  • Said pressure variation means 15 consist for example of a flap which is mounted integral with an axis 16 inside the chimney 11 corresponding. Said axis 16 is fixed relative to said chimney 11.
  • a lever arm 17 is also mounted integral at one of its ends the axis 16 which is provided with each chimney 11.
  • Each arm 17 passes through the orifice inlet 13 of the corresponding chimney 11, and its other end 18 is connected to a rod 19 consisting of a cable, said rod 19 being itself connected to the outlet 20 of a control unit 21.
  • the rod 19 and said control unit 21 are installed below the level of floor 5 of said row 1.
  • the control unit 21 has one or more control inputs 22 and 23 which are respectively connected to one or more probes 24 and 25 (the number two in each of the examples in Figs. la and 1b). Probes 24 and 25 are positioned between the surface of the floors 5 and said ceiling 4, for example above said floors 5. They are respectively provided for measuring ambient air characteristics, such as temperature and humidity, for example example.
  • the control unit 21 is designed to control via the rod 19, in function of the values supplied to its inputs 22 and 23 by at least one of said probes 24 and 25, the rotation of said end 19 of each arm 18 relative to the fixed axis 16 of the corresponding chimney 11 (see arrows A and B for the two possible directions of said rotation).
  • Each lever arm 17 is provided to pivot the flap 15 in the same way during the aforementioned rotation, through the fixed axis 16 of which said arm 18 and said flap 15 are integral, so that each flap 15 can take several positions each corresponding to a pressure determined for the air drawn into each chimney 11.
  • Said ventilation system 9 is provided, via said control 21, to rotate the flap 15 so that the pressure of the air sucked in each chimney 11 at the opening existing between the wall thereof and said part 15 satisfies the following condition.
  • Said ventilation system 9 is thus provided for regulating the speed of the air which is sucked out of each chimney 11.
  • said pivot axis 16 of the flap 15 is fixedly mounted on one of the internal faces 26 of the wall of the chimney 11 which are intended to be mounted opposite a lateral side 6 of each aforementioned floor 5, and in the lower part of said chimney 11.
  • the flap 15 is for example made up of a plate substantially rectangular 15a which is mounted at one of its ends on said axis 16, and of which the other end consists of a tab 15b forming a bend 15c with said plate 15a.
  • the two longitudinal edges 15d of the flap 15 are respectively provided to evolve, apart from the assembly clearance, tangentially to the internal faces 27 and 28 of the chimney 11 which connect said faces 26 together, during the pivoting of said part 15.
  • the tab 15b of the flap 15 is provided so that, in a closed position of said flap 15 which is shown in FIG. 2, one of the faces of said tab 15b is tangent to play near the internal face 26 of the chimney 11 which is opposite to that on which is mounted said pivot axis 16.
  • the arm 17 forming a lever for the flap 15 is mounted on said axis 16 parallel to said faces 27 and 28 of the chimney, and it preferably forms an obtuse angle ⁇ with the plate 15a of the flap 15.
  • Each chimney 11 is preferably provided on its external surface with fixing means 29 on an element of construction, such as a partition (not shown), which is intended to separate two adjoining boxes 2 and 3.
  • said fixing means 29 comprise, on the side 28 of the chimney 11 which is intended to be mounted on said partition, two legs 30 parallel to each other which extend over the entire height and in the middle of said side 28.
  • the spacing between these legs 30 is provided substantially equal to the thickness of said partition, so that said legs 30 can be respectively applied against the lateral faces of said partition.
  • said fixing means 29 further comprise, in each of the vertical edges of said side 28, complementary fixing means 31.
  • the latter consist for example of a reinforcing rod 32 which is pierced with holes 33 which are for example provided for receiving screws, so as to allow the fixing each rod 32 to an amount parallel to said partition, for example (said screws and said uprights are not shown).
  • a ventilation system for a row 1 of compartments 2 and 3 operates from the next way.
  • part 15 of each chimney 11 of a row 1 occupies the closed position shown in FIG. 2.
  • the corresponding arm 17 then occupies a vertical position, in which it is substantially tangent to said adjacent internal face 26.
  • said unit 21 controls by its output 20 a displacement of the rod 19 which is such that the end 18 of each arm 17 moves according to a circular trajectory of an angle ⁇ relative to its initial closed position, in the direction of arrow A (see Figs. la and 1b).
  • the unit 21 reacts as follows.
  • each flap 15 controls the rotation of each flap 15, via its output 20, in the direction arrow C, which decreases the aforementioned pressure upstream of each flap 15 and, by therefore, at the opening between said flap 15 and the wall of each stack 11, so that said outlet speed returns to its constant value and the air leaving each chimney 11 reaches said ceiling 4.
  • the unit 21 controls the pivoting of each flap 15 in the direction of arrow D, so that the air sucked through the opening between each flap 15 and each chimney wall 11 with a higher pressure. This pressure is such that said output speed regains said constant value and sufficient.
  • each flap 15 makes it possible to ensure that a large fraction of the pure air flow which leaves each chimney 11 has an axial component by relative to it and reaches said ceiling 4 (see arrows E).
  • Said ventilation system 9 thus has the advantage of regulate the speed of the air leaving the outlet 14 of each chimney 11 to a value minimum required for each part of the ceiling 4 facing said chimney 11 is ventilated, depending on at least one characteristic of the ambient air in row 1 corresponding to boxes 2 and 3.
  • the resulting ventilation makes it possible to significantly reduce the concentration of toxic gases in boxes 2 and 3 at their floors 5 respective and therefore improve hygienic conditions for animals occupying said boxes 2 and 3.
  • a ventilation system 9 could include several separate rods 19 provided for independent control the pivoting of the flap of each chimney 11, so that the air flow leaving each chimney 11 is adapted to the animals occupying the boxes 2 and 3 contiguous to said chimney 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Housing For Livestock And Birds (AREA)
  • Fodder In General (AREA)
  • Feed For Specific Animals (AREA)
EP98460033A 1997-08-29 1998-08-28 Belüftungssystem für Viehställe Expired - Lifetime EP0899518B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9710980A FR2767910B1 (fr) 1997-08-29 1997-08-29 Systeme d'aeration d'un batiment d'elevage comportant au moins une rangee de cases
FR9710980 1997-08-29

Publications (2)

Publication Number Publication Date
EP0899518A1 true EP0899518A1 (de) 1999-03-03
EP0899518B1 EP0899518B1 (de) 2003-11-12

Family

ID=9510737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98460033A Expired - Lifetime EP0899518B1 (de) 1997-08-29 1998-08-28 Belüftungssystem für Viehställe

Country Status (4)

Country Link
EP (1) EP0899518B1 (de)
AT (1) ATE254269T1 (de)
DE (1) DE69819634T2 (de)
FR (1) FR2767910B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2359618A (en) * 2000-02-22 2001-08-29 Geoff Smith Automatic portable vent responding to temperature and/or humidity changes
CN103196178A (zh) * 2012-01-05 2013-07-10 曲剑英 特殊预防实验动物房空气净化装置
AT521304A1 (de) * 2018-06-06 2019-12-15 Kasper Johann Stall für die Schweinemast
AT524790A4 (de) * 2021-06-09 2022-09-15 Stallprofi Gmbh Hof Und Stalltechnologie Belüftungssystem für Mastschweineställe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210271A1 (de) * 1982-03-20 1983-09-29 H.G. Kathmann Agriculture Projects GmbH, 2848 Vechta Stall fuer die tierhaltung
WO1986007438A1 (en) * 1985-06-03 1986-12-18 System Feed, Inc. A method and system for renewing air in a room of a building
EP0312478A1 (de) 1987-10-12 1989-04-19 Ateliers De Constructions L. Danno Verfahren und Vorrichtung zur Unterdruckbelüftung eines insbesondere zur Geflügelzucht bestimmten Gebäudes
EP0595098A1 (de) * 1992-10-30 1994-05-04 Hölscher & Leuschner GmbH & Co. Stall zur Nutztierhaltung, insbesondere Schweinemast, und ein Verfahren zur Entsorgung von Tierexkrementen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3210271A1 (de) * 1982-03-20 1983-09-29 H.G. Kathmann Agriculture Projects GmbH, 2848 Vechta Stall fuer die tierhaltung
WO1986007438A1 (en) * 1985-06-03 1986-12-18 System Feed, Inc. A method and system for renewing air in a room of a building
EP0312478A1 (de) 1987-10-12 1989-04-19 Ateliers De Constructions L. Danno Verfahren und Vorrichtung zur Unterdruckbelüftung eines insbesondere zur Geflügelzucht bestimmten Gebäudes
EP0595098A1 (de) * 1992-10-30 1994-05-04 Hölscher & Leuschner GmbH & Co. Stall zur Nutztierhaltung, insbesondere Schweinemast, und ein Verfahren zur Entsorgung von Tierexkrementen

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2359618A (en) * 2000-02-22 2001-08-29 Geoff Smith Automatic portable vent responding to temperature and/or humidity changes
CN103196178A (zh) * 2012-01-05 2013-07-10 曲剑英 特殊预防实验动物房空气净化装置
AT521304A1 (de) * 2018-06-06 2019-12-15 Kasper Johann Stall für die Schweinemast
AT521304B1 (de) * 2018-06-06 2020-03-15 Kasper Johann Stall für die Schweinemast
AT524790A4 (de) * 2021-06-09 2022-09-15 Stallprofi Gmbh Hof Und Stalltechnologie Belüftungssystem für Mastschweineställe
AT524790B1 (de) * 2021-06-09 2022-09-15 Stallprofi Gmbh Hof Und Stalltechnologie Belüftungssystem für Mastschweineställe

Also Published As

Publication number Publication date
FR2767910B1 (fr) 1999-11-19
FR2767910A1 (fr) 1999-03-05
EP0899518B1 (de) 2003-11-12
ATE254269T1 (de) 2003-11-15
DE69819634D1 (de) 2003-12-18
DE69819634T2 (de) 2004-09-23

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