DK142509B - Ventilation. - Google Patents
Ventilation. Download PDFInfo
- Publication number
- DK142509B DK142509B DK292172AA DK292172A DK142509B DK 142509 B DK142509 B DK 142509B DK 292172A A DK292172A A DK 292172AA DK 292172 A DK292172 A DK 292172A DK 142509 B DK142509 B DK 142509B
- Authority
- DK
- Denmark
- Prior art keywords
- duct
- suction duct
- damper
- ventilation
- air
- Prior art date
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
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- 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
- Y02A40/70—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in livestock or poultry
-
- 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
- Y02A40/70—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in livestock or poultry
- Y02A40/76—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in livestock or poultry using renewable energy
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/50—Livestock or poultry management
Description
(11) FREMLÆGGELSESSKRIFT 142509 ^ DANMARK <«> 'm. Cl.» F 2* F 7/08 (21) Ansøgning nr. 2921/72 (22) Indløveret døn 9· Jun. 1972 MB (24) Løbedeg 9* Jun. 1972 ν' (44) Ansøgningøn frømløgl og no(11) PUBLICATION MANUAL 142509 ^ DENMARK <«> 'm. Cl. ' F 2 * F 7/08 (21) Application no. 2921/72 (22) Issued on Dec 9 · Jun. 1972 MB (24) Running stage 9 * Jun. 1972 ν '(44) Application seed seed key and no
frømløsggøfeeøekriftet offøntliggjort døn 10· HOV. 198Othe seedless goblet inscription published Dec. 10 · HOV. 198O
DIREKTORATET FOR _ PATENT- OG VAREMÆRKEVÆSENET (30> Prior'tet ™ *" (71) NORDISK VENTILATOR GO. A/S, Næstved, DK.DIRECTORATE OF _ PATENT AND TRADEMARKET SYSTEM (30> Prior'tet ™ * "(71) NORDISK VENTILATOR GO. A / S, Næstved, DK.
(72) Opfinder: Jørgen Holt, KalbyrisveJ 121, Næstved, DK: Christian Vlde= mark, Rosenvænget 10, Haslev, DK: Palle Hein Christiansen, FjorcTbak= ken 1, Næstved, DK. “ (74) Fuldmasgiig under tagens behandling:(72) Inventor: Jørgen Holt, KalbyrisveJ 121, Næstved, DK: Christian Vlde = mark, Rosenvænget 10, Haslev, DK: Palle Hein Christiansen, FjorcTbak = ken 1, Næstved, DK. "(74) Full-blown during the roof's treatment:
Internationalt Patent-Bureau.International Patent Office.
(54) Ventilationsanlæg.(54) Ventilation systems.
Opfindelsen angår et ventilationsanlæg med en kanal til indsugning af friskluft og en kanal til udsugning af luft fra et ventileret rum, hvilke kanaler i hvert fald på en del af deres udstrækning forløber ved siden af hinanden med en fælles skillevæg, hvori der er en åbning mellem de to kanaler med et spjæld, der i sin ene yderstilling aflukker åbningen og i sin anden yderstilling spærrer begge kanaler og giver adgang til fuld recirkulation af luften fra rummet tilbage til dette gennem indsugningskanalen, hvor kanalernes vægge er fremstillet af isolationsmateriale.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a ventilation system with a duct for the suction of fresh air and a duct for the suction of air from a ventilated room, which ducts, at least to some extent, extend side by side with a common partition, the two ducts with a damper which in one of the outer positions close the opening and in their other outer position block both ducts and give access to full recirculation of the air from the room back to this through the suction duct, where the duct walls are made of insulating material.
Sådanne ventilationsanlæg anvendes f.eks. ved staldventilation, og hensigten med det mellem fuld tilførsel af friskluft og fuld recirkulation af afkast-ningsluften fra det ventilerede rum indstillelige spjæld er at opnå en efter rummets temperaturforhold tilpasset ventilation. Til automatisk indstilling af ven- 2 142509 tilationen er det kendt at styre spjældbevægelsen ved hjælp af en termostatreguleret hydraulikmotor, således at spjældet kan indtage enhver stilling mellem ovennævnte yderstillinger.Such ventilation systems are used e.g. by means of stable ventilation, and the purpose of the adjustable damper between full supply of fresh air and full recirculation of the exhaust air from the ventilated room is to achieve a ventilation adapted to the room's temperature conditions. For automatic adjustment of the ventilation, it is known to control the damper movement by means of a thermostatically controlled hydraulic motor, so that the damper can occupy any position between the above mentioned positions.
I kendte anlæg har det vist sig, at der er en betydelig risiko for dannelse af kondensvand eller is i perioder med koldt vejr, og denne risiko gør sig navnlig gældende i den del af anlægget, der rummer recirkulationsspjældet. Dannelser af kondensvand, der kan forekomme såvel på kanalernes vægge som på spjældet medfører, at det støv og smuds, som ved staldventilation uundgåeligt transporteres med afkast-ningsluften gennem udsugningskanalen, klæber til og bliver siddende på de pågældende flader som et fast lag, der kan være meget vanskeligt at fjerne. Endvidere består der i frostperioder en risiko for isdannelser på det sted i kanalen, hvor den varme fugtige returluft mødes med den kolde, udefra tilførte luft, dvs. på spjældet og den her ud for liggende del af indsugningskanalens væg. Såvel støvbelægninger som isdannelser nedsætter i betydelig grad spjældets bevægelighed og kan føre til, at spjældbevægelsen helt blokeres. Endvidere kan kondensvanddannelser i indsugningskanalen føre til neddrypning i det ventilerede rum, f.eks. en stald, og frembyde en direkte risiko for dyrenes sundhed. For at afhjælpe disse ulemper og nedsætte risikoen for kondensvanddannelse er det foreslået at varmeisolere kanalerne enten ved at forsyne metalliske rør med en isolation eller ved som nævnt at fremstille kanalerne og skillevæggen mellem disse helt af varmeisolerende formfast materiale.In known plants, it has been found that there is a considerable risk of condensation or ice formation during periods of cold weather, and this risk is particularly evident in the part of the plant which contains the recirculation damper. Formation of condensation water that can occur on both the walls of the ducts and on the damper causes the dust and dirt which, through ventilation of the house, are inevitably transported with the exhaust air through the exhaust duct, to adhere to and remain on the relevant surfaces as a fixed layer which can be very difficult to remove. Furthermore, during frosty periods, there is a risk of ice formation at the point in the duct where the warm moist return air meets the cold, externally supplied air, ie. on the damper and the adjacent portion of the intake duct wall. Both dust coverings and ice formation significantly reduce the movement of the damper and can cause the damper movement to be completely blocked. Furthermore, condensation water formation in the suction duct can lead to drip into the ventilated space, e.g. a stable, and present a direct risk to animal health. In order to alleviate these drawbacks and reduce the risk of condensation water formation, it has been proposed to heat insulate the ducts either by providing metallic pipes with an insulation or, as mentioned, to manufacture the ducts and partitions between them entirely of heat insulating solid material.
Det har imidlertid vist sig, at ved lave temperaturgrader under ca. -5°G er selv denne foranstaltning ikke tilstrækkelig til at hindre fastfrysning af spjældet, når dette nærmer sig den yderstilling, hvor der er fuld recirkulation af luften fra udsugningskanalen til indsugningskanalen, idet der ved disse lave temperaturer stadig vil være en betydelig tilbøjelighed til isdannelser på indersiden af indsugningskanalens ydre væg.på det pågældende sted. Som følge heraf er det selv med kanalvægge af isolationsmateriale sædvanligvis nødvendigt at benytte opvarmning af kanalen på dette kritiske sted, f.eks. ved hjælp af elektriske varmeelementer, for at sikre anlæggets funktionsdygtighed ved lave temperaturer.However, it has been found that at low temperatures below ca. -5 ° G, even this measure is not sufficient to prevent freezing of the damper as it approaches the outer position where there is full recirculation of the air from the suction duct to the suction duct, since at these low temperatures there will still be a considerable tendency for icing on the inside of the outer wall of the suction duct. at that location. As a result, even with duct walls of insulation material, it is usually necessary to use duct heating at this critical location, e.g. by means of electric heating elements, to ensure the operation of the system at low temperatures.
Ved opfindelsen tilsigtes det at anvise et ventilationsanlæg af den indledningsvis nævnte art, dvs. med kanalvægge af isolationsmateriale, hvor det temperaturområde, hvor der må regnes med tilbøjelighed til isdannelse på det ovennævnte kritiske sted, ligger væsentligt lavere end i kendte anlæg. Opfindelsen består i, at indsugningskanalens ydervæg på sin inderside bærer et godt varmeledende lag, der strækker sig fra en højde omkring spjældets anlægskant i dettes sidstnævnte yderstilling i retning bort fra indsugningssiden.It is an object of the invention to provide a ventilation system of the type mentioned in the preamble, i.e. with duct walls of insulating material, where the temperature range at which the tendency for ice formation to be calculated at the above-mentioned critical site is calculated is substantially lower than in known plants. The invention consists in that the outer wall of the suction duct on its inside carries a good heat conducting layer which extends from a height around the damper's abutment edge in its latter outer position in the direction away from the suction side.
Ved ventilationsanlægget ifølge opfindelsen vil det i indsugningskanalen liggende, godt varmeledende lag i det mindste på sin nederste del blive ramt af en blanding af den gennem recirkulationsåbningen passerende varme returluft fra det ventilerede rum, f.eks. en stald og den gennem indsugningskanalen tilførte yder- 3 142509 luft, hvilken luftblanding har en væsentligt højere temperatur end yderluften.In the ventilation system according to the invention, the well-conducting layer lying in the suction duct, at least on its lower part, will be affected by a mixture of the warm return air passing through the recirculation opening from the ventilated space, e.g. a barn and the outside air supplied through the intake duct, which air mixture has a substantially higher temperature than the outside air.
Den herved tilførte varme ledes til det varmeledende lags øverste del, altså netop det sted i indsugningskanalen, hvor risikoen for isdannelse er særlig udtalt, således at indersiden af indsugningskanalens ydervæg på dette sted antager en højere temperatur, hvorved risikoen for isdannelse nedsættes betydeligt.The heat thus supplied is directed to the upper part of the heat-conducting layer, that is, precisely the place in the suction duct where the risk of ice formation is particularly pronounced, so that the inside of the exterior wall of the suction duct at this location assumes a higher temperature, thereby considerably reducing the risk of ice formation.
En yderligere forbedret virkning opnås ifølge en udførelsesform for opfindelsen ved, at det godt varmeledende lag strækker sig ind i udsugningskanalen.A further improved effect is achieved according to one embodiment of the invention in that the well heat conducting layer extends into the suction duct.
Herved rammes den i udsugningskanalen liggende del af laget direkte af den varme returluft, således at det nævnte kritiske sted tilføres en større varmemængde.In this way, the part of the layer lying in the suction duct is directly hit by the hot return air, so that the said critical place is supplied with a larger amount of heat.
Det har vist sig, at det ved ventilationsanlægget ifølge opfindelsen som følge heraf er muligt at undgå fastfrysning af spjældet i den nævnte recirkulationsstilling ned til temperaturer under -25°C.It has been found that as a result of the ventilation system according to the invention, it is possible to avoid freezing of the damper in said recirculation position down to temperatures below -25 ° C.
Opfindelsen forklares i det følgende nærmere under henvisning til tegningen, hvor fig. 1 viser et længdesnit gennem en udførelsesform for ventilationsanlægget ifølge opfindelsen, fig. 2 et snit efter linien II-I1 i fig. 1 med udeladelse af spjældet mellem anlæggets indsugnings- og udsugningskanal, og fig. 3 et til snittet i fig. 2 svarende billede af en modificeret udførelsesform.The invention will now be explained in more detail with reference to the drawing, in which 1 is a longitudinal section through an embodiment of the ventilation system according to the invention; FIG. 2 is a sectional view taken along line II-I1 of FIG. 1, with the exception of the damper between the intake and exhaust duct of the system, and fig. 3 is a sectional view of FIG. 2 is a similar view of a modified embodiment.
I fig. 1 er vist et længdesnit af et ventilationsanlæg af den art, der er beskrevet i dansk patentansøgning nr. 3323/71. I det rum 1, der skal ventileres, f.eks. en stald, befinder sig en ventilatordel 2 indeholdende en aksialblæser, der har to sæt mekanisk sammenkoblede skovle med modsat stigningsretning, hvilke skovlsæt er beliggende henholdsvis i en central ventilationskanal og en omgivende, hermed koncentrisk ringformet kanal. En blæser af denne udformning er kendt fra beskrivelsen til dansk patnet nr. 115.495.In FIG. 1 is a longitudinal sectional view of a ventilation plant of the kind described in Danish Patent Application No. 3323/71. In the space 1 to be ventilated, e.g. a stable, there is a fan part 2 containing an axial blower having two sets of mechanically interconnected vanes with opposite pitch, which vanes are located respectively in a central ventilation duct and a surrounding concentric annular duct. A fan of this design is known from the specification of Danish Patent No. 115,495.
De to koncentriske ventilationskanaler ved aksialblæseren er over et forbindelseskanalstykke 3, hvis nærmere indretning er beskrevet i ovennævnte patentansøgning nr. 3323/71, forbundet med en dobbeltkanal, som i sin helhed er betegnet med henvisningsnummeret 4 og indeholder to af en fælles plan skillevæg 5 adskilte, hovedsagelig halvcylindriske kanaler 6 og 7, der er forbundet med henholdsvis den centrale og den ydre ringformede ventilationskanal ved aksialblæ-seren. Dobbeltkanalen 4 fører fra det ventilerede rum 1 op gennem den ovenover liggende del af den pågældende bygning og udmunder over dennes tag 8 i en taghætte 9, der er udformet med separate luftpassager til forbindelse af kanalerne henholdsvis 6 og 7 med den omgivende luft.The two concentric ventilation ducts of the axial fan are connected over a connecting duct piece 3, the details of which are described in the above-mentioned patent application No. 3323/71, to a double duct, which in its entirety is designated by the reference number 4 and contains two of a common planar partition 5 , mainly semi-cylindrical ducts 6 and 7, which are connected to the central and outer annular ventilation ducts respectively of the axial fan. The double duct 4 leads from the ventilated room 1 through the upper part of the building in question and opens over its roof 8 in a roof cap 9, which is formed with separate air passages for connecting ducts 6 and 7 with the surrounding air respectively.
Til indstilling af ventilationen i afhængighed af temperaturforholdene er skillevæggen 5 udformet med en åbning, hvori er monteret et blandingsspjæld 10, der som beskrevet i ovennævnte patentansøgning nr. 3323/71 er bevægeligt mellem 4 1Λ2509 to yderstillinger, i den ene af hvilke spjældet lukker åbningen i skillevæggen, således at der er fuld tilførsel af friskluft til rummet 1, medens spjældet i den anden yderstilling er orienteret på tværs af kanalerne 6 og 7, hvorved tilførslen af friskluft blokeres, og der etableres fuld recirkulation af den udsugede luft fra kanalen 6 til kanalen 7.For adjusting the ventilation depending on the temperature conditions, the partition 5 is formed with an opening in which is mounted a mixing damper 10 which, as described in the aforementioned patent application no. 3323/71, is movable between 4 1/2509 two outer positions, in one of which the damper closes the opening in the partition so that there is full supply of fresh air to room 1, while the damper in the second outer position is oriented transversely of ducts 6 and 7, thereby blocking the supply of fresh air and establishing full recirculation of the extracted air from duct 6 to channel 7.
For at lette transporten af ventilationsanlægget fra fremstillingssted til installationssted er dobbeltkanalen 4 i den viste udførelsesform sammensat af et antal kortere kanalstykker 11, 12, 13 og 14, som først på installationsstedet sammenføjes i forlængelse af hinanden til dannelse af den samlede dobbeltkanal.In order to facilitate the transport of the ventilation system from place of manufacture to place of installation, the double duct 4 in the illustrated embodiment is composed of a number of shorter duct pieces 11, 12, 13 and 14 which are first joined together at the installation site in order to form the total double duct.
I overensstemmelse med opfindelsen er der i den viste udførelsesform i det kanalstykke 13, der rummer spjældet 10, langs indsugningskanalen 7’s ydervæg på dennes inderside anbragt et godt varmeledende lag, som strækker sig ind i udsugningskanalen 6. I den viste udførelsesform har dette lag form af et indsat stykke 15 af metalplade, fortrinsvis aluminiumplade, hvis overkant i indsugningskanalen 7 ligger i en højde svarende til anlægskanten for spjældet 10 i den yderstilling, hvor det spærrer for kanalerne 6 og 7 og åbner for recirkulation fra kanalen 6 til kanalen 7. I den viste udførelsesform strækker indsatsstykket sig ind i udsugningskanalen 6, hvor dets overkant ligger lavere end i indsugningskanalen 7. Også den mod det ventilerede rum 1 vendende kant af indsatsstykket 15 er skråt afskåret, således at underkanten ligger højere i indsugningskanalen end i udsugningskanalen, men således at den i indsugningskanalen liggende del af indsatsstykket 15 har et mindre areal end den del, som ligger i udsugningskanalen 6.In accordance with the invention, in the illustrated embodiment, in the duct piece 13 containing the damper 10, a good heat-conducting layer extending into the suction duct 6 is arranged along the outer wall of the suction duct 7, which extends into the suction duct 6. an inserted piece of metal plate, preferably aluminum plate, the upper edge of the suction duct 7 being at a height corresponding to the abutment edge of the damper 10 in the outer position where it blocks the ducts 6 and 7 and allows for recirculation from duct 6 to duct 7. In the embodiment shown, the insert extends into the suction duct 6, its upper edge being lower than that of the suction duct 7. Also, the edge of the insert 15 facing the ventilated space 1 is obliquely cut so that the lower edge lies higher in the suction duct than in the suction duct, but so that the portion of the insert 15 lying in the inlet duct has a smaller area than the portion which l in the suction duct 6.
For at lette monteringen er indsatsstykket 15 i den viste udførelsesform, som det fremgår af snittet i fig. 2, todelt efter et symmetriplan, idet dets to dele 15a og 15b er ført gennem hver sin spalte 16 og 17 med modstående sidekanter af den i kanalstykket 13 liggende del af skillevæggen 5. Med denne udformning af indsatsstykket kan monteringen ske ved, at de to dele 15a og 15b indføres i spalterne 16 og 17 inden den nævnte del af skillevæggen 5 anbringes i kanalstykket 13, hvis ydervægge er udformet med diametralt modstående noter for skillevæggens sidekanter.In order to facilitate mounting, the insert 15 is in the illustrated embodiment, as shown in the section in FIG. 2, divided in two by a plane of symmetry, its two parts 15a and 15b being passed through respective slots 16 and 17 with opposite side edges of the part of the partition wall 13 lying in the channel piece 13. With this design of the insert piece, the two portions 15a and 15b are inserted into the slots 16 and 17 before the said part of the partition 5 is placed in the channel piece 13, the outer walls of which are formed with diametrically opposed grooves for the side edges of the partition.
Med indsatsstykket 15 monteret i kanalstykket 13 i det i fig. 1 viste anlæg vil den del af indsatsstykket, som er beliggende i udsugningskanalen 6, blive ramt direkte af den varme opadstigende returluft, og gennem det godt varmeledende indsatsstykke vil den tilførte varme blive ledet over i indsugningskanalen 7 netop på det sted i denne, hvor risikoen for isdannelser er særligt stor, således at indersiden af indsugningskanalens ydervæg på dette sted får en højere temperatur, hvorved denne risiko formindskes betydeligt. Den viste udformning af indsatsstykket med et mindre areal i indsugningskanalen 7 end i udsugningskanalen 6 bevirker en koncentration af den tilførte varmemængde på et mindre areal, så- 5 142509 ledes at den tilstræbte virkning herved yderligere forstærkes.With the insert piece 15 mounted in the channel piece 13 in the embodiment shown in FIG. 1, the portion of the insert located in the suction duct 6 will be directly hit by the heat rising return air, and through the well-heat conducting insert the heat supplied will be passed into the suction duct 7 precisely at the point where the risk for ice formation is particularly large, so that the inside of the outer wall of the suction duct at this location is given a higher temperature, thereby significantly reducing this risk. The shown design of the insert with a smaller area in the suction duct 7 than in the suction duct 6 causes a concentration of the applied amount of heat on a smaller area, so that the desired effect is further enhanced.
I fig. 3 er i et billede svarende til snittet i fig. 2 vist en modificeret udførelsesform, hvor virkningen af indsatsstykket 15 er yderligere forstærket ved, at de i udsugningskanalen 6 liggende dele af indsatsstykkets to parter 15a og 15b er bøjet indad fra udsugningskanalens ydervæg, således at indsatsstykket på begge sider passeres af den varme opstigende luftstrøm. I denne udførelsesform må indsatsstykkets størrelse og beliggenhed naturligvis vælges under hensyn til, at spjældet 10 med sikkerhed skal kunne indtage den førnævnte yderstilling, hvor det spærrer for kanalerne 6 og 7 og åbner for recirkulation af returluften fra kanalen 6 til kanalen 7, således at spjældet 10's yderkant i denne stilling ligger an mod ydervæggene af kanalerne 6 og 7. Endvidere må dimensionerne af de indadbøjede dele af indsatsstykket vælges således, at disse dele ikke i væsentlig grad hæmmer recirkulationsstrømningen fra kanalen 6 til kanalen 7.In FIG. 3 is a view similar to the section of FIG. 2 shows a modified embodiment in which the effect of the insert 15 is further enhanced by the parts of the suction duct 6 lying in the two parts 15a and 15b of the insert being bent inwards from the outer wall of the suction duct, so that the insert on both sides is passed by the hot rising air flow. In this embodiment, of course, the size and location of the insert must be chosen taking into account that the damper 10 must be able to safely occupy the aforementioned outer position, where it blocks the ducts 6 and 7 and allows for recirculation of the return air from the duct 6 to the duct 7, so that the damper The outer edge of the 10 in this position abuts against the outer walls of the channels 6 and 7. Furthermore, the dimensions of the inwardly bent parts of the insert must be chosen such that these parts do not substantially inhibit the recirculation flow from the channel 6 to the channel 7.
En nedsættelse af risikoen for isdannelser vil som nævnt også kunne opnås med et indsatsstykke langs indsugningskanalens ydervæg,idet et sådant indsatsstykke vil blive ramt af en blanding af den gennem recirkulationsåbningen tilførte returluft og den i indsugningskanalen tilførte yderluft, således at indsatsstykket herved tilføres en varmemængde, der, selv om den vil være mindre end i den viste udførelsesform, under ikke for ugunstige betingelser kan være tilstrækkelig til opnåelse af den ønskede virkning.As mentioned, a reduction of the risk of ice formation can also be achieved with an insert piece along the exterior wall of the suction duct, such an insert being affected by a mixture of the return air supplied through the recirculation opening and the exterior air supplied in the suction duct, thereby adding a heat quantity to the suction duct. which, although smaller than in the embodiment illustrated, may not be sufficient to achieve the desired effect under unfavorable conditions.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK292172AA DK142509B (en) | 1972-06-09 | 1972-06-09 | Ventilation. |
| CA154,371A CA970206A (en) | 1972-06-09 | 1972-10-20 | Ventilation system |
| SE7307995A SE389726B (en) | 1972-06-09 | 1973-06-06 | VENTILATION SYSTEM WITH WIDTHLY RUNNING SUPPLY AIR AIR AND FRAN AIR AIR |
| DE2329108A DE2329108C2 (en) | 1972-06-09 | 1973-06-07 | Double duct for a room ventilation system |
| US00367939A US3830145A (en) | 1972-06-09 | 1973-06-07 | Ventilation system |
| NL7308034A NL7308034A (en) | 1972-06-09 | 1973-06-08 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK292172 | 1972-06-09 | ||
| DK292172AA DK142509B (en) | 1972-06-09 | 1972-06-09 | Ventilation. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK142509B true DK142509B (en) | 1980-11-10 |
| DK142509C DK142509C (en) | 1981-06-29 |
Family
ID=8117149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK292172AA DK142509B (en) | 1972-06-09 | 1972-06-09 | Ventilation. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3830145A (en) |
| CA (1) | CA970206A (en) |
| DE (1) | DE2329108C2 (en) |
| DK (1) | DK142509B (en) |
| NL (1) | NL7308034A (en) |
| SE (1) | SE389726B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO137706L (en) * | 1974-01-21 | |||
| US4489881A (en) * | 1984-01-30 | 1984-12-25 | Tempmaster Corporation | Air delivery system for hospital rooms and the like |
| FR2964448B1 (en) * | 2010-09-07 | 2014-03-28 | 4E | VENTILATION INSTALLATION, IN PARTICULAR FARM BUILDING. |
| GB2510555B (en) * | 2012-11-28 | 2018-10-24 | Building Product Design Ltd | Ventilation device with heat recovery mode |
| CN106386562B (en) * | 2016-10-21 | 2018-08-14 | 新希望六和股份有限公司 | A kind of premixing ventilated type henhouse |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE507808A (en) * | 1950-12-13 | |||
| US3122307A (en) * | 1961-08-08 | 1964-02-25 | Clarage Fan Company | Fan equipment |
| NO119851B (en) * | 1967-01-30 | 1970-07-13 | Nordisk Ventilator | |
| NL6705872A (en) * | 1967-04-26 | 1968-10-28 | ||
| CA940760A (en) * | 1970-11-16 | 1974-01-29 | Nordisk Ventilator Co. Aktieselskab | System for the ventilation of buildings |
-
1972
- 1972-06-09 DK DK292172AA patent/DK142509B/en not_active IP Right Cessation
- 1972-10-20 CA CA154,371A patent/CA970206A/en not_active Expired
-
1973
- 1973-06-06 SE SE7307995A patent/SE389726B/en unknown
- 1973-06-07 DE DE2329108A patent/DE2329108C2/en not_active Expired
- 1973-06-07 US US00367939A patent/US3830145A/en not_active Expired - Lifetime
- 1973-06-08 NL NL7308034A patent/NL7308034A/xx not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| NL7308034A (en) | 1973-12-11 |
| DE2329108A1 (en) | 1973-12-20 |
| CA970206A (en) | 1975-07-01 |
| DE2329108C2 (en) | 1982-10-28 |
| US3830145A (en) | 1974-08-20 |
| DK142509C (en) | 1981-06-29 |
| SE389726B (en) | 1976-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PBP | Patent lapsed |