DK171943B1 - Method and system for ventilating a barn - Google Patents
Method and system for ventilating a barn Download PDFInfo
- Publication number
- DK171943B1 DK171943B1 DK65095A DK65095A DK171943B1 DK 171943 B1 DK171943 B1 DK 171943B1 DK 65095 A DK65095 A DK 65095A DK 65095 A DK65095 A DK 65095A DK 171943 B1 DK171943 B1 DK 171943B1
- Authority
- DK
- Denmark
- Prior art keywords
- stable
- temperature
- fan
- air
- valves
- Prior art date
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
-
- 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
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/065—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit fan combined with single duct; mounting arrangements of a fan in a duct
Description
DK 171943 B1 FREMGANGSMÅDE og system til ventilering af en staldDK 171943 B1 PROCEDURE and system for ventilating a stable
TEKNIKKENS STANDPUNKTBACKGROUND OF THE ART
55
Opfindelsen angår en fremgangsmåde til ventilering af en stald ved hjælp af et ventilationssystem, der omfatter vægventiler for frisklufttilførsel, mindst en udsugningsventilator samt et kontrolsystem for styring af ventilatoren, 10 hvor vægventilernes åbning styres af en termostat indstillet på en øverste grænseværdi af lufttemperaturen inde i stalden. Endvidere angår opfindelsen et system til ventilering af en stald ved fremgangsmåden.The invention relates to a method of ventilating a stable by means of a ventilation system comprising fresh air supply wall valves, at least one extractor fan and a control system for the fan control, wherein the opening of the wall valves is controlled by a thermostat set at an upper limit temperature of the indoor air temperature. . Furthermore, the invention relates to a system for ventilating a barn by the method.
15 En sådan fremgangsmåde og et sådant system er kendt, og her styres omdrejningstallet på ventilationen af kontrolsystemet i afhængighed af lufttemperaturen. Ved stigende lufttemperaturer øges omdrejningstallet således, at en større mængde friskluft trækkes ind i stalden af forskellige åb- 20 ninger. Også ved helt lukkede vægventiler trækkes der luft ind i stalden, f.eks. via andre, permanent åbne ventilationsåbninger. Der er imidlertid ingen sikkerhed i systemet, hvis kontrolsystemet svigter. I værste fald kan dyrene i stalden tage skade ved for høj temperatur eller dø.Such a method and system is known, and here the speed of control of the ventilation of the control system is controlled depending on the air temperature. With increasing air temperatures, the rpm is increased so that a greater amount of fresh air is drawn into the stable by various openings. Also with fully closed wall valves, air is drawn into the barn, e.g. via other, permanently open ventilation openings. However, there is no security in the system if the control system fails. In the worst case, the animals in the barn can be damaged if the temperature is too high or die.
2525
Endvidere kendes fremgangsmåde og system fra anden side, hvor en såkaldt trækstation forsynet med en termostatstyret trækarm styrer åbningen af alle vægventiler langs en væg i staldbygningen. Denne termostat er således selvstændig fun- 30 gerende og er ikke velegnet til at samarbejde med et automatisk kontrolsystem, hvis man ved en høj udetemperatur ønsker en stor tilgang af friskluft gennem vægventilerne i stedet for gennem andre friskluftindtag i stalden.Furthermore, the method and system are known from the other side, in which a so-called drawing station provided with a thermostatically controlled drawing arm controls the opening of all wall valves along a wall in the stable building. This thermostat is thus self-functioning and is not suitable for cooperation with an automatic control system if a high supply of fresh air is desired through the wall valves at a high outdoor temperature instead of through other fresh air inlets in the stable.
35 Et kontrolsystem til staldventilation, hvor omdrejningstallet på udluftningsventilatorerne øges ved stigende lufttem- 2 DK 171943 B1 peratur, kendes fra EP patentskrift nr. 0.171.117.35 A control system for housing ventilation, in which the speed of the ventilation fans is increased with increasing air temperature, is known from EP patent specification No. 0.171,117.
Et system med en termostat, der styrer åbningen af en eller flere vægventiler, kendes fra GB patentskrift nr.A system with a thermostat controlling the opening of one or more wall valves is known from GB patent specification no.
5 2.161.688.5 2,161,688.
FORKLARING AF OPFINDELSENEXPLANATION OF THE INVENTION
10 Det særlige ved fremgangsmåden ifølge opfindelsen er, at der ved overskridelse af en grænseværdi for belastningen af ventilatoren af kontrolsystemet sker aktivering af en varmekilde i termostaten, der styrer vægventilerne, således at temperaturen registreret af føleren overskrider den 15 øverste grænseværdi.10 The special feature of the method according to the invention is that when a limit value for the load on the fan of the control system is exceeded, a heat source is activated in the thermostat which controls the wall valves so that the temperature detected by the sensor exceeds the upper limit value.
Ved opfindelsen er der således tilvejebragt en adskillelse mellem reguleringsområdet for vægventilerne og en sikkerhedsåbning af ventilerne for at undgå for høje, skadelige 20 temperaturer. Ved normal drift påtrykkes termostaten, der for eksempel kan være forbundet til en trækstation for en række vægventiler, en overtemperatur, således at vægventilerne åbner forholdsvis meget ved overskridelse af en for eksempel 90% af ventilatorens maksimalbelastning i form af 25 effektforbruget. Ved stigende temperaturer sker regulerin gen ved indsugning af luft gennem ventilerne i væggen. Svigter det normale kontrolsystem, vil ventilerne automatisk åbne ved overskridelse af den temperatur, der normalt ellers kunne opnås ved påtrykning af temperaturstignigen 30 ved hjælp af varmekilden. Da termostaten for eksempel kan være en væske/gascylinder, opnår man en stor sikkerhed for, at ventilerne åbnes før der opstår skadelige temperaturer i stalden.Thus, the invention provides a separation between the control area of the wall valves and a safety opening of the valves to avoid excessive, harmful temperatures. In normal operation, the thermostat, which may, for example, be connected to a draw station for a number of wall valves, is applied to an over-temperature, so that the wall valves open relatively much by exceeding, for example, 90% of the fan's maximum load in the form of power consumption. At rising temperatures, the regulation is done by suctioning air through the valves in the wall. If the normal control system fails, the valves will automatically open by exceeding the temperature that would otherwise normally be obtained by applying the temperature rise 30 by means of the heat source. For example, since the thermostat can be a liquid / gas cylinder, there is a great assurance that the valves are opened before harmful temperatures occur in the stable.
35 Det særlige ved systemet ifølge opfindelsen er, at kontrolsystemet er indrettet til ved overskridelse af en grænse- 3 DK 171943 B1 værdi for belastningen af ventilatoren at aktivere en varmekilde ved termostaten. Ud over at systemet herved kan anvendes ved fremgangsmåden, er der den fordel, at man med enkle midler kan ændre et eksisterende system med træksta-5 tion til et system ifølge opfindelsen.The special feature of the system according to the invention is that the control system is adapted to activate a heat source at the thermostat by exceeding a limit value for the load of the fan. In addition to the fact that the system can be used in the process, there is the advantage that one can easily change an existing system with a drag station to a system according to the invention by simple means.
Opfindelsen finder særlig anvendelse ved anvendelse af diffus tilførsel af friskluft gennem staldens loft, som omhandlet i krav 4. Ved normal drift ved lave udetemperatu-10 rer, for eksempel under 12eC, trækkes friskluften alene ind gennem det i loftet placerede diffusororgan. Ved stigende temperaturer og dermed stigende ventilatorbelastning åbnes vægventilerne, og nu kan friskluft med en temperatur, der ikke forårsager træk hen over dyrerne, tilledes stalden.The invention is particularly applicable when using diffuse supply of fresh air through the ceiling of the barn as claimed in claim 4. In normal operation at low outdoor temperatures, for example below 12 ° C, the fresh air is drawn in only through the diffuser located in the ceiling. With increasing temperatures and thus increasing fan load, the wall valves are opened, and now the fresh air with a temperature that does not cause drag over the animals can be allowed into the barn.
1515
Ved at udformet arealforholdet mellem loft og diffusoror-gang som omhandlet i krav 5 opnår man en passende stor gennemstrømningsflade for friskluften og dermed tilstrækkelig lav lufthastighed, uden at bygningsomkostningerne bliver 20 for store.By designing the area ratio of ceiling to diffuser passage as defined in claim 5, a suitably large flow area for the fresh air is obtained and thus a sufficiently low air velocity without the building costs becoming too large.
Det foretrækkes at placere opvarmningsorganer under diffu-sororganer, som omhandlet i krav 6.It is preferred to place heating means under diffuser means as claimed in claim 6.
25 Endvidere foretrækkes, at en temperaturføler for staldens lufttemperatur placeres under loftet og under opvarmningsorganerne, jævnfør krav 7.Furthermore, it is preferred that a temperature sensor for the air temperature of the barn is placed below the ceiling and under the heating means, according to claim 7.
30 TEGNINGEN30 THE DRAWING
Et udførselseksempel for fremgangsmåden og systemet ifølge opfindelsen skal herefter beskrives nærmere under henvisning til tegningen, hvor 35 4 DK 171943 B1 fig. 1 viser et snit gennem en svinestald forsynet med ventilationssystemet ifølge opfindelsen ved lav udetemperatur, 5 fig. 2 viser det samme som figur 1, men ved høj ude- temperatur, fig. 3 viser opbygningen af kontrolsystemet, og 10 fig. 4 viser et forstørret detailudsnit af loftet i stal den.An exemplary embodiment of the method and system according to the invention will now be described in more detail with reference to the drawing, in which FIG. 1 shows a section through a pig barn equipped with the ventilation system according to the invention at low outdoor temperature; FIG. Figure 2 shows the same as Figure 1, but at high outside temperature; 3 shows the structure of the control system, and FIG. 4 shows an enlarged detail section of the ceiling in the stable.
BESKRIVELSE AF UDFØRELSESEKSEMPLETDESCRIPTION OF THE EXAMPLE
15 En svinestald er forsynet med stier 1 for dyrene, og er i sidevæggene forsynet med termostatstyrede luftventiler 3. Staldens loftbeklædning 5 er forsynet med gennembrydninger 7, der er beklædt med tekstil eller perforerede plader 9, som tillader luft at passerer ind i stalden ovenfra. Af- 20 kastluften fra stalden udsuges på sædvanlig måde gennem en række temperaturstyrede og omdrejningsregulerede skaktventilatorer 11 anbragt på række midt i staldens loftskonstruktion.15 A pig barn is provided with paths 1 for the animals and is provided with thermostatically controlled air valves in the sidewalls 3. The barn ceiling covering 5 is provided with breakthroughs 7, which are covered with textile or perforated plates 9, which allow air to pass into the barn from above. The exhaust air from the barn is extracted in a conventional manner through a series of temperature-controlled and rotationally controlled shaft fans 11 arranged in a row in the middle of the ceiling structure of the barn.
25 Når ventilatorerne 11 kører, trækkes der hele tiden en diffus luftstrøm 13 gennem beklædningen 9 ind i stalden. At luftstrømmen er diffus vil sige, at den er forholdsvis langsom og som udgangspunkt laminar.25 When the fans 11 are running, a diffuse air flow 13 is constantly drawn through the casing 9 into the stable. The fact that the air flow is diffuse means that it is relatively slow and basically laminar.
30 I situationen vist på figur 1, hvor ventilerne 3 er lukkede, fordi der ikke ønskes kold træk ned over dyrene, møder luftstrømmen 13 en opadstigende, varm luftstrøm 15 fra dyrene. I den på figur 1 viste situation er udelufttemperaturen lav, det vil sige mellem -30° og +12°C. Den kolde ude- 35 luft vil derfor være tilbøjelig til at synke ned og blandes med luften 15 fra dyrene. Derved opnår man den tilsigtede 5 DK 171943 B1 udligning af luftens temperatur, når luftstrømmene blandes.In the situation shown in Figure 1, where the valves 3 are closed because no cold draft is desired over the animals, the air flow 13 encounters an upward, warm air flow 15 from the animals. In the situation shown in Figure 1, the outdoor air temperature is low, ie between -30 ° and + 12 ° C. The cold outdoor air will therefore tend to sink and mix with the air 15 from the animals. In this way, the intended air temperature compensation is achieved when the air flows are mixed.
Kontrolsystemet for ventilationssystemet omfatter en kombineret kontrolpult og styreenhed 17, der automatisk og i af-5 hængighed af indelufttemperaturen i stalden målt ved hjælp af en føler 19 kan regulere omdrejningstallet på ventilatorerne 11. Kontrolpulten 17 kontrollerer samtidig effektforbruget i ventilatorernes motorer.The control system for the ventilation system comprises a combined control desk and control unit 17 which can automatically and depending on the indoor air temperature in the housing measured by a sensor 19 can control the speed of the fans 11. The control desk 17 simultaneously controls the power consumption of the fans' motors.
10 Fra styreenheden 17 er der endvidere strømforsyning til at aktivere et ikke nærmere vist varmelegeme i gascylinder 21, som indgår i en trækstation, der styrer åbningen af en række ventiler 3 langs staldbygningens ene væg. Ved stigende lufttemperaturer øges omdrejningstallet og dermed belast-15 ningen af motorerne i ventilatorerne 11, idet al luften trækkes ind gennem loftsgennembrydningerne 7, når ventilerne 3 er lukkede.Furthermore, from the control unit 17, there is a power supply for activating an unspecified heater in gas cylinder 21, which is included in a drawing station which controls the opening of a series of valves 3 along one wall of the stable building. With increasing air temperatures, the rpm and thus the load of the motors in the fans 11 increases, with all the air being drawn in through the ceiling breakthroughs 7 when the valves 3 are closed.
Når styreenheden registrerer, at ventilatormotorerne over-20 skrider en vis brøkdel af deres maksimalbelastning, for eksempel 80% eller 90%, aktiveres varmelegemet i gascylinderen 21. Cylinderen 21 fungerer på samme måde som kendte radiatorventiler ved gas/væskefaseudveksling og påvirker trækarme på ventilerne 3, således at ventilerne 3 åbnes.When the control unit detects that the fan motors exceed a certain fraction of their maximum load, for example 80% or 90%, the heater is activated in the gas cylinder 21. The cylinder 21 functions in the same manner as known radiator valves in gas / liquid phase exchange and affects the draw arms of the valves 3 so that the valves 3 are opened.
25 Ved aktivering af varmekilden sker åbningen af ventilerne 3 på et tidligere tidspunkt end det som gascylinderen 21 normalt er indstillet til. Det foretrækkes at udføre det således, at varmekilden forøger temperaturen 3°C i termostaten 21 over den omgivende lufts temperatur. Derved sker der en 30 åbning af ventilerne til situationen, som vist på figur 2.By activating the heat source, the valves 3 are opened at an earlier time than that to which the gas cylinder 21 is normally set. It is preferred to carry it out so that the heat source increases the temperature 3 ° C in the thermostat 21 above the ambient air temperature. Thereby, the valves are opened to the situation, as shown in Figure 2.
Nu strømmer en forholdsvis stor mængde luft ind gennem vægventilerne 3 til supplement af luftstrømmen 13 fra loftet. Derved falder belastningen i ventilatorerne 11, men stiger temperaturen, øges åbningsgraden af ventilerne 3 naturlig-35 vis.Now a relatively large amount of air flows in through the wall valves 3 to supplement the air flow 13 from the ceiling. As a result, the load in the fans 11 decreases, but as the temperature rises, the opening rate of the valves 3 naturally increases.
6 DK 171943 B1 I situationen på figur 2 sker der ikke i samme grad en opblanding af ude- og indeluft som på figur 1. Imidlertid er udelufttemperaturen nu så høj, at et eventuelt træk fra ventilerne 3 ikke kan skade dyrerne i stierne 1.6 DK 171943 B1 In the situation in Figure 2, there is not a mix of outdoor and indoor air as in Figure 1. However, the outdoor air temperature is now so high that any pull from the valves 3 cannot harm the animals in the paths 1.
55
Svigter kontrolenheden 17 eller ventilatorerne 11, vil ventilerne 3 alligevel åbne, blot ved en lidt højere temperatur, og dyrene vil således få nødventilation ved en 3°C højere temperatur end ved den normale driftstilstand.Nevertheless, if the control unit 17 or the fans 11 fail, the valves 3 will open only at a slightly higher temperature, and thus the animals will receive emergency ventilation at a temperature of 3 ° C higher than the normal operating state.
1010
Under diffusororganet 9 kan som vist på figur 4 ophænges konvektionsopvarmningsorganer 25, for eksempel i form af ribberør. Derved kan der om vinteren ske en opvarmning af den indstrømmende luft fra loftet. En passende registrering 15 af luftens middeltemperatur kan ske ved ophængning af føleren 19 ned fra loftet i et område under opvarmningsorganerne 25. Området vil være det sted, hvor eventuelt opvarmet friskluft vil blandes med den fra dyrene kommende, varme luft, og luften i området vil således have en passende mid-20 deltemperatur, der er egnet til at regulere ventilationen med.Under the diffuser means 9, as shown in Figure 4, convection heating means 25 can be suspended, for example in the form of rib pipes. This allows heating of the inflowing air from the ceiling in winter. A suitable recording 15 of the average temperature of the air can be made by suspending the sensor 19 from the ceiling in an area below the heating means 25. The area will be the place where any heated fresh air will be mixed with the warm air coming from the animals and the air in the area will thus having a suitable mid-20 temperature suitable for controlling ventilation.
Ved opfindelsen kan man opnå de kombinerede fordele af diffus friskluftindtag gennem loftet og en sikkerhed for ven-25 tilation af stalden ved svigt af det elektroniske kontrolsystem.The invention provides the combined advantages of diffuse fresh air intake through the ceiling and a guarantee for ventilation of the stable in the event of failure of the electronic control system.
Fremgangsmåden og systemet ifølge opfindelsen kan naturligvis også anvendes til ventilering af andre type stalde, 30 f.eks. kvægstalde og kyllingestalde.The method and system according to the invention can of course also be used for ventilating other types of stables, e.g. cattle stables and chicken stables.
Claims (7)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK65095A DK171943B1 (en) | 1995-06-09 | 1995-06-09 | Method and system for ventilating a barn |
| PCT/DK1996/000245 WO1996041520A1 (en) | 1995-06-09 | 1996-06-06 | Method and system for ventilation of a building |
| AU61216/96A AU6121696A (en) | 1995-06-09 | 1996-06-06 | Method and system for ventilation of a building |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK65095A DK171943B1 (en) | 1995-06-09 | 1995-06-09 | Method and system for ventilating a barn |
| DK65095 | 1995-06-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK65095A DK65095A (en) | 1996-12-10 |
| DK171943B1 true DK171943B1 (en) | 1997-08-18 |
Family
ID=8095990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK65095A DK171943B1 (en) | 1995-06-09 | 1995-06-09 | Method and system for ventilating a barn |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU6121696A (en) |
| DK (1) | DK171943B1 (en) |
| WO (1) | WO1996041520A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1035386A3 (en) * | 1999-03-12 | 2002-10-30 | O'Gorman, Patrick Joseph | A ventilation system |
| AU2012265581B2 (en) * | 2005-12-14 | 2015-07-02 | Herd Homes Limited | Animal shelter structure |
| NZ592556A (en) | 2005-12-14 | 2013-01-25 | Herd Homes Ltd | Improvements in or relating to animal shelter structures |
| WO2007069916A2 (en) * | 2005-12-14 | 2007-06-21 | Herd Homes Limited | Animal shelter structure |
| DE102007051048A1 (en) * | 2007-10-16 | 2009-04-23 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Plant with spatially distributed heat sources with cooling system and method for cooling a system with spatially distributed heat sources |
| AU2016100030B4 (en) * | 2016-01-13 | 2016-06-30 | Asmir Causevic | Roof exhaust fan |
| DK179134B1 (en) * | 2016-02-15 | 2017-11-27 | Skov As | Fan design including diffuser unit, engine mounting and damper |
| WO2017140315A1 (en) * | 2016-02-15 | 2017-08-24 | Skov A/S | Wall fan construction including diffuser unit, suspension for motor and damper |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151811A (en) * | 1977-10-12 | 1979-05-01 | Andrew Truhan | Housing apparatus for animals |
| GB2161688B (en) * | 1984-06-26 | 1988-03-23 | Christopher Alan Knock | Ventilating a pig fattening house |
| NL8402389A (en) * | 1984-07-31 | 1986-02-17 | Adrianus Henrikus Josephus Smu | CLIMATE CONTROL SYSTEM FOR A LIVESTOCK. |
-
1995
- 1995-06-09 DK DK65095A patent/DK171943B1/en not_active IP Right Cessation
-
1996
- 1996-06-06 WO PCT/DK1996/000245 patent/WO1996041520A1/en active Application Filing
- 1996-06-06 AU AU61216/96A patent/AU6121696A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO1996041520A1 (en) | 1996-12-27 |
| DK65095A (en) | 1996-12-10 |
| AU6121696A (en) | 1997-01-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |