GB2295889A - Heat exchange ventilator - Google Patents

Heat exchange ventilator Download PDF

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Publication number
GB2295889A
GB2295889A GB9520866A GB9520866A GB2295889A GB 2295889 A GB2295889 A GB 2295889A GB 9520866 A GB9520866 A GB 9520866A GB 9520866 A GB9520866 A GB 9520866A GB 2295889 A GB2295889 A GB 2295889A
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GB
United Kingdom
Prior art keywords
heat exchange
unit
exchange ventilator
ventilator according
air
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.)
Withdrawn
Application number
GB9520866A
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GB9520866D0 (en
Inventor
Keith Harry Stokes
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB9520866D0 publication Critical patent/GB9520866D0/en
Publication of GB2295889A publication Critical patent/GB2295889A/en
Withdrawn legal-status Critical Current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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/103—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits
    • 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

Description

( 1) "An improved heat e,:cAan,e ventilator" This invention relates and
iii,iE- paitictkal-y tC, itn h is particu ture iclified in ventilator whic 5 c iri--.u l a r a p ei tuildin, t h u-.i-e ape 2295889 to heat c-.:cliaii.e venti lators improved. heat e-,.ch,;:,,n,e arly suitable for fittin_ in a wall 01, Window C,f a (,-, -- ri,,, l i 1 e Li!l e ',, -t II h it is c 11 b u 1 1 cl 1 n c, E -Lures, it 12 oft aperture iS of a -zi:,: inch diam It is already known to for fitting in l -_j of bu. I.iiri;-z but often sucl e-t t o n i t ' i n n t o c! i _ I;I E, -t -, a 1 1- f J2 cj u - -1 - n -,: C- 1, -. -, - E. -,,- 6. r, -t ' t C 1 i F, w 11 1 c 1, t L e a bc- v e cI.
A & ri cl .,i and to prc,,.-ide ape n c, n - c.., c_. u ' n flound t u 1 a r a p 6-- tureZ in a p E- '.11 UC, o t, e e a S i e l. a nd ri. c i 1 c- 1 j- t 1 v e 2 m a 1 a l,' e t e 1 U cl -tei aperture. provide heat e.,:cl-ian;e o aper-tures in walIZ c,r known Ileat f a design which is Suitable for lar apertuie of able of' adequate ncy cf heat e:-:chan,e between the n, &,-r.
are riot. o a c i r c u I'l C C, ll., 1 ect (:,i tl A I i 11 '1 e ri t 1 C 1 - 1 -,c- a Leat to invention, d- heat el i, t i I t cj r o r m c, u r; -, 1 rid> i r,:;, L 1, ' -, w a -b u 1 1 cl, I n t, c c, if. 1) r i e z a t E 1-1, e cilcUlar a'er-Lule in 1 ', 1 1 1 C:
1 C1 1.5 0 circular cross-section, the unit having at least two concentric annular passages extending for a major portion of the length of' the unit thrcugli which out;oin; and incoming air flows, wherein the air flow in adjacent passages are in opposite directions relative to the len6th 0 f t h e un i -,.
Preferably, the unit has a plurality of concentric annular pa-sa>e-7.
Prelerably, also, each annular pa--sae Ii,:,s an inlet at cne. end of the unit and an c.utlet at t',-,e opposite c-rid ef the unit which are aiiularly spaced-apart.
Each annular passage, preferably, has two angularly inlets and two an,,, :ularly spaced-apart Q outlets.
Preferably, the two inlets are diametrically opposite one. ano-ther and the two outlets are diametrically oppoSite one ano-ther.
Pieterably, also, the two diametrically oppoSed inlets the two diametrically opposed are an,Ll,trly -zpaced-apai,t by ninety de,.-ee-.
The air 1,-. each 1.---aie, preferably, flowE in - each pa-z-sa,e 1-z. provided with air flew d,-re.ctit-ii-i cuntrol i:ie.. azis fur producing air flow in a helical path c,,,.rer the 'eii;ti of the pa-a,6e. also, the air flow elli,e(--.tiori 0.
W means comprises an air flow guide in the form of a helix extending along the length of the passa8e.
The air flow guide is, preferably, an insert located in the pasza&e between the inner and the outer wall 5 thereof.
Alternatively, the air flow juide may be a helical projection formed on the inner and/or the outer wall of the paszage.
hieferably, the walls of the pazza8es are formed by minding strips of sheet material in a helical path tu produce a cylinder and the helical projection forming the air!low 6uide is formed by interengaging formations on the overlapping or interconnectin8 ed8es of the ztrip.
Manifold means is, preferably, provided at each end f the unit to collect and separate the incowinZ and outloin, air from the inlets and outlets of each of the passages.
ireferably, fan means is provided for drawini; incow;nj air and eypellin8 outjoin6 air through the associated pazaages in the unit.
Preferably, also, the fan means comprise two f dispDzed at opposite ends of the unit.
o a h --" Each fan is, preferably connected to the manifold at the associated end of the unit.
fieferably, a single driving means is provided foi driving each!an and the two fanz may be connected 0.
ji (4) together by a drive shaft extending through the centre of the unit.
A preferred embodiment of this invention will now be described, Ty way of example only, with reference to the accompanying diagrammatic drawings of which:- Figure 1 is a partly sectioned side view oi a heat exchange ventilator with parts omitted for the sake ot clarity; Figure 2 is a partly sectioned diagrammatic side view of a heat emchanSe unit of the heat exchange ventilator; Figure 3 is an end view of cne end of the heat elchanle unit; Figure 4 is an end view of the opposite end of the heat exchange unit; Figure 5 is a perspective view of one end of the heat exchange unit; and Fijure 6 in a perspective view of a partly dismantled section of the heat exchange unit.
Referring now to the drawings, veLtilatow indicated generally at circular aperture inches diameter, in a wall a beat exchange for counting in a knot shown) uf for example, five or 21,: cl window of a building (not chuwn; to provide ventilation and extract heat from the outgoing air to raises the temperature of the incoming aii unit 12 located in and extending heat exchanle unit 12 Comprises comprises a heat exchange throu6h the aperture. The (5) a Series of concentric tubes 14 formed of thin sheet metal or foil which when assembled to,&ethe-r form a plural ity oi concen-tric annulai. pas--a&es 16 -tl-irou;li which incomin or c)ut8oin air passe-- alonj6 the leii,tiA of the unit 1-2. The air l lowS alone alternate pa- out g c. s--a.,c-s IC- to the 0 0 air to opt imize heat therebetueen.
16 1S provided at one end with two inlet ICI' each e.Iendin; tlire,u,j'i a ninety de-ree 2ectol and the Lhic., ninety de,6ree ectc,i- cl,eniri&-. are c,po-sed. The i.eulaiiiin; diametricall- oppused j j r - ciellree at said one end cif t,,-,e 1,a-sa;e 1;J aie elc-ed by iriean--- such as inserts or 1:, i - -., J Ihe paSsa-2e 16 is provided at the opposite end witn kwc -liallar outlet openin;--- -22' which a,&ain extend L-Aver d:Laiiieziically opposed ninety de,&ree sectors, the ie,iainin- ninety degree sectors a,6ain bein& closed by C> iri-cer.3 ci: plates 220 but the two inlet openi l s 13 and the thic, outlet opeiiiri&s 22. are an.ulai,ly a c e d ai t bi L,, ri i riety degrees. -c, that a i i can not f 1 ow Stl a IL tlil c Uc-11 -the paS 16 Lut Irlust, have a 1.1t, 11 Ica 1 r C'I ill Wfic-se o-at ion i S at 'Lea-st ri i nety S t 1P, u n c r. e a- - e i t t > L t A e la - 2 a,,je 16 a n d pr c. d uc e s a c c, r r e S pon in the elf iciency of the heat transfei f r c) P, t h ali. i low, '.o the air 1 low in the adjacent 1 c,.
CJ U 1 r.
e the. len,&th of the f low path of ihe bee (6) Each passage 16 is provided with an air. flow guide 24 in the form of a helical insert which increases the effective length of the flow path of the air through the passage 16 by causing the air flow to complete several rotationS during the flow from the inlet 18 to the outlet 22. Where the tubes 14 are formed by winding strips of sheet metal or foil in a helical path on a uiandrel or former the air flow &uide 24 is conveniently formed by the formations on the oveilai,pin> or inteiconnectin, ed;ez of the strips.
A manifold 2-6 is provided at each end of the heat unit 1.2. The. manifold '26 at said one end of the unit I- provides connections between the inlets 18 in the two diametrically opposed ninety de,i.ee sectors indicated generally at 28 for the outgoing air, and connections between the outlets 2.12 in the two diametrically opposed ninety degree sectors indicated generally at 30 for. the inccuiln; air shown in Figure 3 of the drawings.
C> The ii.,&riifcld '1-'6 at said opposite end of the unit pr,:jvideccni-iectionz between the inlets 18 in the two diairietrically ninety de&i,ee -ector--- indicated enerally at 32 tor the incomine> air, and connection- between the outlets in the two dianie-trically opposec, ninety dewi-ee sectois- indicated eeneral'Ly at 314 for the air shown in Figure 4 of the. clrawin&s.
A fa.n 2:6 is provided at each end of the unit 12, and (7) is connected to the associated manifold 26, the fan 36 at the inner end of the heat exchanp e ventilator 10 drawiriF incoming air through the unit 12 and the fan 36 at the outer end of the heat exchange ventilator 10 drawing outgoing air through the unit 12. The fans 36 are drivably connected together by a drive Shaft 33 eytending thrcu,&li of the heat exchange veritilat(:ji the. centre of the unit I' 10 whicl, is driven by a single electric motor -10.
khe lormation of the heat e.c..Iian&e unit 1 cylinder with a plurality of annular concentric pa-ssa,&es!C- the heal exchange ventilator!(-) paiticularly suitable for mounting in a small dianieter circular. aperture in the wall or window of a building whilst pro..;idin,, adequate volumes of air flow and efficient heat between the outgoing and incoming air.
In a modification, an alternative method of driving 1he interconnected fans in the heat e-..ciange ventilator 10 to e.thei replace or supplement tiot,clr consists of providing an axial f low fan at the 2, 0 inter ior end, a centrifugal lan at the exterior end and the outlet frow the centi-ifual fan a distance elf.
i reni the external surf ace of the wal 1 of the t:)u--ldi,i&. Wind LLoij.ri, un-L.:, the wall produces rotation of the a..:ial ilow fan which acts as a windmill and p,i,oduce-z coi,rezl. ondin, rotation of the centrifugal fan tu draw air lium the Ibuilding throuji the lir=at ventilatc,r.
the action oi the electric (8) This alternative method of driving the fans operates due to the different characteristics of axial and centrifugal fans and the phenomenon of there being higher pitot pressure created at the surface of the wall than at a point spaced, say, 10Omm. away from said surface when a wind is blowing onto the wall.
0.. 0 (9)

Claims (4)

  1. Claims: 1. A heat exchange ventilator for mounting in a circular aperture
    in a wall or window of a building comprising a heat exchange unit of circular cross-section, the unit having at least two concentric annular passageE extending for a iajor portion of the length of the unit through which outgoing and incoming air flows, wherein the air flow in adjacent passages are in opposite dliections relative to the length of the unit.
  2. 2. A heat exchange ventilator according to claim 1, wneiein the unit has a plurality of concentric annular passages.
  3. C A heat exchange ventilator according to claim 2, wherein each annular passage has an inlet at one end of the unit and an outlet at the opposite end of the unit which are angularly spaced-apart.
  4. 4. A heat exchange ventilator according to claim 3, wherein each annular passage has two angularly spaced-apart inlets and two angularly spaced-apart ji outlets. 1. A heat exchange ventilator according to claii i, wherein the two inlets are diametrically opposite one another and the two outlets are diametrically opposite one another. 6. A heat exchange ventilator according to claim 5, whelein tie two diametrically opposed inlets and the iwo is 0.0 (10) diametrically opposed outlets are angularly spaced-apart by ninety degrees. 7. A heat exchange ventilator according to any one of the preceding claims, wherein the air in each passage flows in a helical path. 8. A heat exchange ventilator according to claim 7, wherein each passage is provided with air flow direction control means for producing air. flow in a helical path over the length of' the passage. 9. A heat exchange ventilator according to clailix 8, wherein the air flow direction control means comprises an ali flow guide in the form of a helix extending along the length of the paszaee 10. A heat exchange wherein the air f low passage between the 11. A heat exchange wherein the air flow formed on the inner 12. A heat exchange ventilator accordinj to claim 11, wherein the walls of the passages are formed by windin, strips of sheet material in a helical path to produce a cylinder and the helical projection formin& the air flow guide is formed by interengaginj g formations on the overlapping or interconnecting edges of the strip. 13. A heat exchange ventilator accordin& to any one of ventilator according to claim 9, guide is an insert located in the inner and the outer wall thereof. ventilator according to claim 9, guide may be a helical projection and/or the outer wall of the passage.
    0 0 000 ( 1 1) the preceding claims and claim 3, wherein manifold means is provided at each end of the unit to collect and separate the incoming and outgoing air irom. the islets and outlets of each of the passages. 14. A heat exchange ventilator according to any one of the preceding claims, wherein tan means is provided for drawing incoming air and expelling outgoing air through the associated passages in the unit. 15. A heat exchange ventilator according to claim 14, wherein the fan means comprise two lans disposed at opposite ends of the unit. 16. A beat exchange ventilator according to claim 13 and claim 15, wherein each fan is connected to the manifold at the as2ociated end of the unit. 17. A heat exchange ventilator according to claim 15 or claim 16, wherein a single driving means is provided for driving each fan. 18. A heat exchange ventilator according to claim 17, wherein the two fans are be connected together by a drive 00 shait extending through the centre oi the unit. 1J. A heat exchange ventilator constructed, arranged and adaPted to operate substantially as hereinbefore de2cribed with reference to, and as illustrated by, the accompanyin,ú- drawings.
GB9520866A 1994-10-14 1995-10-12 Heat exchange ventilator Withdrawn GB2295889A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9420731A GB9420731D0 (en) 1994-10-14 1994-10-14 An improved heat exchange ventilator

Publications (2)

Publication Number Publication Date
GB9520866D0 GB9520866D0 (en) 1995-12-13
GB2295889A true GB2295889A (en) 1996-06-12

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Family Applications (2)

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GB9420731A Pending GB9420731D0 (en) 1994-10-14 1994-10-14 An improved heat exchange ventilator
GB9520866A Withdrawn GB2295889A (en) 1994-10-14 1995-10-12 Heat exchange ventilator

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB9420731A Pending GB9420731D0 (en) 1994-10-14 1994-10-14 An improved heat exchange ventilator

Country Status (3)

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AU (1) AU3615295A (en)
GB (2) GB9420731D0 (en)
WO (1) WO1996012145A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1308678B1 (en) 2001-11-01 2008-05-28 Fensterfabrik Albisrieden Ag Ventilation device
ATE502265T1 (en) 2003-08-27 2011-04-15 Albisrieden Fenster VENTILATION DEVICE AND METHOD OF OPERATION
JP7313985B2 (en) * 2019-09-04 2023-07-25 三菱重工業株式会社 Heat exchange core, heat exchanger, and method of manufacturing heat exchange core

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2065294A (en) * 1979-11-30 1981-06-24 Gebhardt Gmbh Wilhelm Heat exchanging ventilators
EP0125673A1 (en) * 1983-05-13 1984-11-21 Optigal Sa Heat exchanger
EP0131962A2 (en) * 1983-07-19 1985-01-23 Georg Niedermeier Heat exchanger
US4846261A (en) * 1987-11-05 1989-07-11 Karjasuo Oy Vacuum heat exchange apparatus for ventilation of buildings, in particularly of animal sheds
EP0449124A1 (en) * 1990-03-29 1991-10-02 Hubert Vogt Annular space heat exchanger
EP0533629A1 (en) * 1991-09-20 1993-03-24 Wiba, Wintsch + Bach Method and device for supplying heated fresh air
WO1994020807A1 (en) * 1993-03-05 1994-09-15 Sen Nieh Vortex heat exchange method and device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1463163A (en) * 1965-11-10 1966-06-03 Commissariat Energie Atomique heat exchange element
US3612002A (en) * 1969-11-14 1971-10-12 Thomas Margittai Liquid-heating apparatus
DE2523218A1 (en) * 1975-05-26 1976-12-16 Adam Jakob Indirect heat exchanger for air conditioning system - has series of concentric tubes with half section blanking off rings
FR2344804A1 (en) * 1976-03-17 1977-10-14 Fimec Household ventilation system heat recuperator - has concentric tubes forming meander paths for hot stale air and cold fresh air
DE4010151A1 (en) * 1989-03-31 1990-10-04 Hubert Vogt Heat-exchanger made of concentric tubes - has gas flowing in spiral in annular chamber round inner tube

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2065294A (en) * 1979-11-30 1981-06-24 Gebhardt Gmbh Wilhelm Heat exchanging ventilators
EP0125673A1 (en) * 1983-05-13 1984-11-21 Optigal Sa Heat exchanger
EP0131962A2 (en) * 1983-07-19 1985-01-23 Georg Niedermeier Heat exchanger
US4846261A (en) * 1987-11-05 1989-07-11 Karjasuo Oy Vacuum heat exchange apparatus for ventilation of buildings, in particularly of animal sheds
EP0449124A1 (en) * 1990-03-29 1991-10-02 Hubert Vogt Annular space heat exchanger
EP0533629A1 (en) * 1991-09-20 1993-03-24 Wiba, Wintsch + Bach Method and device for supplying heated fresh air
WO1994020807A1 (en) * 1993-03-05 1994-09-15 Sen Nieh Vortex heat exchange method and device

Also Published As

Publication number Publication date
WO1996012145A1 (en) 1996-04-25
AU3615295A (en) 1996-05-06
GB9520866D0 (en) 1995-12-13
GB9420731D0 (en) 1994-11-30

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