EP2573496A1 - Ensemble formant rotor et unité de récupération de chaleur/énergie dotée de l'ensemble formant rotor - Google Patents

Ensemble formant rotor et unité de récupération de chaleur/énergie dotée de l'ensemble formant rotor Download PDF

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Publication number
EP2573496A1
EP2573496A1 EP11181948A EP11181948A EP2573496A1 EP 2573496 A1 EP2573496 A1 EP 2573496A1 EP 11181948 A EP11181948 A EP 11181948A EP 11181948 A EP11181948 A EP 11181948A EP 2573496 A1 EP2573496 A1 EP 2573496A1
Authority
EP
European Patent Office
Prior art keywords
rotor
axial
pressure balancing
circumferential
plenum
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Withdrawn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
EP11181948A
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German (de)
English (en)
Inventor
Aki Rosenqvist
Jukka SETÄLÄ
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.)
Swegon Ilto Oy
Original Assignee
Swegon Ilto Oy
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 Swegon Ilto Oy filed Critical Swegon Ilto Oy
Priority to EP11181948A priority Critical patent/EP2573496A1/fr
Publication of EP2573496A1 publication Critical patent/EP2573496A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28D19/00—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium
    • F28D19/04—Regenerative heat-exchange apparatus in which the intermediate heat-transfer medium or body is moved successively into contact with each heat-exchange medium using rigid bodies, e.g. mounted on a movable carrier
    • F28D19/047—Sealing means

Definitions

  • the present invention relates to the field of ventilation technology and equipment for ventilation, and more particularly to a rotor assembly and a heat/energy recovery unit having a rotor assembly.
  • a heat/energy recovery unit having a rotor assembly otherwise known as rotary air-to-air heat exchanger or heat/enthalpy wheel is a regenerative heat exchanger where a mass made of corrugated channels rotates through airstreams. Adjacent supply and exhaust air streams each flow through half of the wheel in a counter flow direction.
  • a heat/energy recovery unit having a rotor assembly offers high efficiency heat recovery and is a common choice of heat exchanger in a ventilation unit.
  • Figure 1 presents a conventional rotor assembly for a ventilation unit or a heat/energy recovery unit having a rotor assembly according to the prior art.
  • the rotor assembly comprises a rotor 1, a rotor box 2, and divider planes 4, 5 for isolating air streams.
  • a first axial sealing unit 7, also known as transverse seal, is used to isolate the air streams on first side 12 of the rotor 1.
  • Similar second axial sealing unit 10 is provided on the on the second side 13 of the rotor 1.
  • a single plane or plate surrounding the rotor periphery 3 may be used to divide the upstream, first side 12 of the rotor 1, and downstream, second side 13 of the rotor 1, sides of the rotor 1.
  • the rotor 1 has a first side surface 24 on the first side 12 of the rotor and a second side surface 25 on the second side 13 of the rotor 1.
  • FIG. 2 shows a schematic view of a heat/energy recovery unit having a rotor assembly according to the prior art.
  • Figure 3 shows a schematic view of an alternative heat/energy recovery unit having a rotor assembly according to the prior art.
  • a conventional prior art heat/energy recovery unit having a rotor assembly unit 30 As shown in figures 2 and 3 are shown a conventional prior art heat/energy recovery unit having a rotor assembly unit 30.
  • the rotor unit 30 comprises a rotor 1, an inlet plenum 14 into which fresh outside air is conducted as inlet air I.
  • the inlet air l is conducted to the rotor 1 in which it is heated to supply air S which is received to the supply plenum 15 from the rotor 1.
  • the supply air S is further conducted to a room 32 by using a supply fan 34. From the room 32 air is discharged as discharge air D conducted to discharge plenum 16 of the rotor unit 30. The discharge air D is conducted from the discharge plenum 16 to the rotor 1 in which it is cooled such that it transfers heat to the inlet air I. The cooled discharge air D is received to the outlet plenum 17 as outlet air O and the outlet air is extracted by using discharge fan 36.
  • a first axial sealing unit comprises the first axial sealing unit 7 and the first axial divider 4 for isolating the inlet plenum 14 from the outlet plenum 17 on the first side of the rotor 1.
  • a second axial sealing unit comprises the second axial sealing unit 10 and the second axial divider 5 on the second side of the rotor 1.
  • a circumferential sealing unit comprises one or two circumferential sealing units 6 and one or two circumferential dividers 2, as shown in figures 2 and 3 .
  • Inlet air I is taken from the outside at the atmospheric air pressure PA.
  • the air passes through the inlet duct and due to the pressure drop caused by the resistance of the inlet duct has a pressure P1 in the inlet plenum 14.
  • the supply air S After passing through the rotor 1 the supply air S has a reduced pressure of P2 at the supply plenum 15.
  • From the supply plenum 15 the air is drawn through supply fan 34 and passes through the supply duct to the ventilated room 32. In the room 32 it is assumed that the pressure is that of atmospheric air pressure PA since in normal ventilation installation the pressure is close to that of atmospheric pressure PA.
  • the discharge air D is drawn through the discharge duct and due to the duct losses has a pressure of P3 in the discharge plenum 16.
  • the discharge air D passes through the rotor 1 and due to the resistance of the rotor 1 the outlet air O has a reduced pressure of P4 in the outlet plenum 17. From the outlet plenum 17 the outlet air O is drawn through the discharge fan 36 and is driven through the exhaust duct.
  • a balance damper 38 can be placed between the extract duct and the rotor 1 in the location shown in figures 2 and 3 .
  • the internal pressure of the rotor box 2 PO is the average of the P1, P2, P3 and P4 pressures when the circumferential sealing units 6 are of the same design, as is shown in figure 2 .
  • the rotor 1 has a single rotor wall and not a rotor box 2
  • the rotor box 2 of figure 2 is replaced with circumferential divider extending around the periphery 3 of the rotor 1. Therefore in figure 3 there is only one circumferential sealing unit 6 that separates the pressure P1 in inlet plenum 14 and the pressure P2 in the supply plenum 15. The same applies for the discharge plenum 16 and the outlet plenum 17.
  • Figure 4 is a graph showing leakage through a heat/energy recovery unit having a rotor assembly according to the prior art.
  • Figure 4 shows results of calculations, which have been confirmed by testing, are shown in figure 4 for a small ventilation unit, or small heat/energy recovery unit having a rotor assembly, having a brush type axial sealing units 7, 10 and brush type circumferential sealing unit 6 with a rotor 1 of 300mm diameter supplying a balanced ventilation supply of 40 l/s which at the example flow rate has a pressure drop through the rotor 1, ⁇ Protor, of 80Pa.
  • the graph of figure 4 shows the resultant axial sealing unit 7, 10 leakage rates identified as curve "m" and circumferential sealing unit 6 leakage rate identified as "p".
  • the curve between point i, ii and iii show a range of inlet duct pressure P1 to discharge duct pressure P3 differences.
  • Figure 4 is then an example of the leakages through the heat/energy recovery unit having a rotor assembly sealing units 7, 10, 6 with a prior art seal arrangement with no countermeasures, such as balance damper 38, are used to improve this.
  • the axial seal leakage "m” and circumferential seal leakage "p" are positive indicating that the leakage flow into supply side of the rotor, inlet plenum 14 and supply plenum 15, hence in the wrong direction since this leakage contaminates the air supplied to room 32.
  • Figure 5 is a graph showing leakage through a heat/energy recovery unit having a rotor assembly according to the prior art having a pressure balance damper.
  • the above mentioned problem of contamination is partially solved in a prior art solution by using a pressure balance damper 38 to provide in increased pressure loss in the discharge, in discharge plenum 16 and outlet plenum 17, such that the P2 would be greater or equal to P3.
  • a limitation of the rotary heat/energy recovery unit having a rotor assembly is cross contamination or mixing of the two air streams which occur by carryover and leakage across the seals surrounding the rotor and separating the air streams.
  • An object of the present invention is thus to provide a method and an arrangement for implementing the method so as to overcome the above problems and to alleviate the above disadvantages.
  • a rotor assembly for a heat/energy recovery unit having a rotor assembly comprising:
  • the sealing unit has a sealing element and a pressure balancing element provided between the pressure balancing volume and the adjacent plenums or the first and second side of the rotor.
  • the first axial sealing unit and the second axial sealing unit comprise an axial sealing unit having an axial sealing element between an axial pressure balancing volume and the one plenum and an axial pressure balancing element between an axial pressure balancing volume and other plenum.
  • the circumferential sealing unit comprises a circumferential sealing element between a circumferential pressure balancing volume and the first side of the rotor and a circumferential pressure balancing element between a circumferential pressure balancing volume and the second side of the rotor.
  • the pressure balancing is arranged to be pressure permeable.
  • the pressure balancing element is a brush type sealing element, cloth type sealing element, a narrow gap or diffusion gap.
  • the circumferential pressure balancing volume is arranged to extend circumferentially around the periphery of the rotor.
  • the circumferential sealing unit comprises a circumferential divider provided on periphery of the rotor for isolating the first and second side of the rotor, and that the circumferential divider is arranged to the circumferential sealing unit such that the circumferential seal extends between the circumferential divider and the periphery of the rotor.
  • the axial pressure balancing volume is arranged to extend across a first and second side surface of the rotor on the first and second side of the rotor, respectively.
  • the first and second axial sealing unit comprise respectively a first and second axial divider extending in the direction of the rotation axis of the rotor for isolating the two adjacent plenums from each other on the first and second side of the rotor respectively, and that the first and second axial dividers are arranged to the axial sealing units such that the axial seals extend between the axial divider and the side surface of the rotor.
  • the heat/energy recovery unit having a rotor assembly having a rotor unit comprising:
  • the sealing unit has a sealing element and a pressure balancing element provided between the pressure balancing volume and the adjacent plenums.
  • the first axial sealing unit has an axial sealing element between the first axial pressure balancing volume and the inlet plenum and an axial pressure balancing element between a first axial pressure balancing volume and outlet plenum.
  • the second axial sealing unit has an axial sealing element between the second axial pressure balancing volume and the discharge plenum and an axial pressure balancing element between a second axial pressure balancing volume and supply plenum.
  • the circumferential sealing unit comprises a circumferential sealing element between a circumferential pressure balancing volume and the inlet plenum or the outlet plenum and a circumferential pressure balancing element between a circumferential pressure balancing volume and the supply plenum or the discharge plenum.
  • the circumferential sealing unit comprises a circumferential divider provided on periphery of the rotor for isolating the first and second side of the rotor, and that the circumferential divider is arranged to the circumferential sealing unit such that the circumferential seal extends between the circumferential divider and the periphery of the rotor.
  • the first and second axial sealing unit comprise respectively a first and second axial divider extending in the direction of the rotation axis of the rotor for isolating the two adjacent plenums from each other on the first and second side of the rotor respectively, and that the first and second axial dividers are arranged to the first and second axial sealing units such that the first and second axial seals extend respectively between the axial divider and the side surface of the rotor.
  • Figure 6 shows a rotor assembly for ventilation unit or heat/energy recovery unit according to the present invention.
  • Figure 6 shows a rotor assembly having a rotor 1 and a first axial sealing unit 7, second axial sealing unit 10 and a circumferential sealing unit 6.
  • Figure 7 shows an axial sealing unit of a rotor assembly for ventilation unit or heat/energy recovery unit according to the present invention.
  • FIG. 6 and Figure 7A show a first embodiment of the second axial sealing unit 10 of the present invention.
  • the second axial sealing unit 10 comprises a pressure balancing element 22, 26 having a wall portion 26 which together with the second axial divider 5 forms a pressure balancing volume 8.
  • the first and second axial sealing units 7, 10 are provided respectively in connection with the first and second side surfaces 24, 25 of the rotor 1, as shown in figure 6 , for sealing the gap between the dividers 4, 5 and the side surfaces 24, 25 of the rotor 1.
  • the first and second axial sealing units 7, 10 are provided with a pressure balancing assembly according to the present invention.
  • the first axial sealing unit 7 having a pressure balancing assembly is provided with a sealing element 23 and a pressure balancing element 22, 26 between the pressure balancing volume 8 and the adjacent plenums 14, 17.
  • the first axial sealing unit 7 comprises an axial sealing element 23 between an axial pressure balancing volume 8 and the inlet plenum 14 and a pressure balancing element 22, 26 between an axial pressure balancing volume 8 and outlet plenum 17.
  • the second axial sealing unit 10 having a pressure balancing assembly is provided with a sealing element 23 and a pressure balancing element 22, 26 between the pressure balancing volume 8 and the adjacent plenums 15, 16.
  • the second axial sealing unit 10 comprises an axial sealing element 23 between an axial pressure balancing volume 8 and the discharge plenum 16 and a pressure balancing element 22, 26 between an axial pressure balancing volume 8 and supply plenum 15.
  • the invention is characterised in that the sealing units 7, 10 are arranged at the both sides of the rotor 1, and that the sealing units 7, 10 are or at least one of the said sealing units 7, 10 are provided with a pressure balancing volume 8, and that the pressure balancing volume 8 of the sealing units 7, 10 allow an air leakage through the side surfaces 24, 25 of the rotor 1.
  • the sealing units 7, 10 may be incorporated together with the axial dividers 4, 5 respectively.
  • the air leakage through the rotor 1 flows from the inlet plenum 14 through the pressure balancing volume 8 of the first axial sealing unit 7 with the first side surface 24 of the rotor 1, through the rotor 1 and then through the pressure balancing volume 8 of the first axial sealing unit 7 with the second side surface 25 of the rotor 1, and to the supply plenum 15.
  • the air leakage through the rotor 1 flows from the discharge plenum 16 through the pressure balancing volume 8 of the second axial sealing unit 10 with the second side surface 25 of the rotor 1, through the rotor 1 and then through the pressure balancing volume 8 of the second axial sealing unit 10 with the first side surface 24 of the rotor 1, and to the outlet plenum 17.
  • FIG. 8 shows a circumferential sealing unit of a rotor assembly for ventilation unit or heat/energy recovery unit according to the present invention.
  • the circumferential sealing unit 6 comprises a pressure balancing element 21, 27 having a wall portion 27 which together with the circumferential divider 2 forms a circumferential pressure balancing volume 9.
  • the circumferential sealing unit 6 is provided in connection with the periphery 3 of the rotor 1 or the outside edge of first or second side surface 24, 25 of the rotor 1, as shown in figure 8 , for sealing the gap between the circumferential divider 2 and the periphery 3 and/or side surfaces 24, 25 of the rotor 1.
  • the circumferential sealing unit 6 is provided with a pressure balancing assembly according to the present invention.
  • the circumferential sealing unit 6 having a pressure balancing assembly comprises a circumferential sealing element 20 between a circumferential pressure balancing volume 9 and the first side 12 of the rotor 1 and a circumferential pressure balancing element 21, 27 between a circumferential pressure balancing volume 9 and the second side 13 of the rotor 1.
  • the circumferential sealing element 20 is between the circumferential pressure balancing volume 9 and the inlet plenum 14 or the outlet plenum 17, and the circumferential pressure balancing element 21, 27 is between the circumferential pressure balancing volume 9 and the supply plenum 15 or the discharge plenum 16.
  • the invention is characterised in that the sealing units 6 are arranged at the both sides of the rotor 1, and that the sealing units 6 are or at least one of the said sealing units are provided with provided a pressure balancing volume 9, and that the pressure balancing volume 9 of the sealing units 6 allow an air leakage through the side surfaces 24, 25 of the rotor 1.
  • the sealing units 6 may be incorporated together with the circumferential divider 2.
  • the air leakage through the rotor 1 flows from the inlet plenum 14 through the pressure balancing volume 9 of the circumferential sealing unit 6 with the first side surface 24 of the rotor 1, through the rotor 1 and then through the pressure balancing volume 9 of the circumferential sealing unit 6 with the second side surface 25 of the rotor 1, and to the supply plenum 15.
  • the air leakage through the rotor 1 flows from the discharge plenum 16 through the pressure balancing volume 9 of the circumferential sealing unit 6 with the second side surface 25 of the rotor 1, through the rotor 1 and then through the pressure balancing volume 9 of the circumferential sealing unit 6 with the first side surface 24 of the rotor 1, and to the outlet plenum 17.
  • Figures 7A, 7B, 7C , 8A, 8B and 8C show different kinds of embodiments of the pressure balancing volume 8, 9, the sealing elements 20, 23 and the pressure balancing elements 22, 26, 21, 27.
  • the pressure balancing elements 22, 26, 21, 27 are arranged to be pressure permeable such that allow the pressure of the adjacent plenums 14, 15, 16, 17 to balance.
  • the sealing elements 20, 23 and the pressure balancing elements 22, 26, 21, 27 may be provided as brush type sealing element, cloth type sealing element, a narrow gap or diffusion gap.
  • the narrow gap may be provided with the axial divider 4, 5 or with the circumferential divider 2 or with the wall portions 26, 27 of the pressure balancing elements 22, 26, 21, 27 defining the pressure balancing volume 8, 9.
  • the narrow gap is thus provided between the side surface 24, 25 or the periphery of the rotor 1 and the divider 4, 5, 2 or the wall portion 26, 27 of the pressure balancing elements 22, 26, 21, 27.
  • the narrow gap provides a high resistance to the hinder leakage flow.
  • the circumferential pressure balancing volume 9 is arranged to extend circumferentially around the periphery 3 of the rotor 1 or the outside edge of the side surface 24, 25 of the rotor 1.
  • the circumferential sealing unit 6 is arranged to the circumferential divider 2 such that the circumferential seal extends between the circumferential divider 2 and the periphery 3 of the rotor 1.
  • the axial pressure balancing volume 8 is arranged to extend across a first and second side surface 24, 25 of the rotor 1 on the first and second side 12, 13 of the rotor 1, respectively.
  • the axial sealing units 7, 10 are arranged to the first and second axial dividers 4, 5 such that the axial sealing units 7, 10 extend between the axial divider 4, 5 and the side surface 24, 25 of the rotor 1.
  • the axial pressure balancing volume 8 is arranged such that it sits offset from the rotation axis 11 and the circumferential pressure balancing volume 9 is arranged such that it covers an area of the side surface 24, 25 of the rotor 1.
  • the cross sectional area of axial pressure balancing volume extends across the full side surface 24, 25 of the rotor 1.
  • the cross sectional area of the circumferential pressure balancing volume 9 follows circumferentially around the periphery 3 of the rotor.
  • the cross section of the pressure balancing volume 8, 9 may be may be rectangular, triangular, polygonal, circular, oval or any other shape.
  • the overall volume of the pressure balancing volume 8, 9 may be chosen according to the application and the parameters of the rotor 1 and the heat/energy recovery unit having a rotor assembly.
  • the pressure balance volume 8, 9 can take any form such as to create a suitable pressure balancing effect.
  • FIG 9 shows one embodiment of a ventilation unit and a heat/energy recovery unit having a rotor assembly according to the present invention.
  • the ventilation unit and a heat/energy recovery unit having a rotor assembly according to the present invention comprises a rotor 1, said rotor having a first side surface 24 and a second side surface 25, and an inlet plenum 14, a supply plenum 15, a discharge plenum 16, and an outlet plenum 17.
  • the main air flows are indicated by thicker arrows.
  • the air leakage through the first axial sealing unit 4, 7 is indicated by narrower arrows.
  • the air leakage through the rotor 1 flows from the inlet plenum 14 through the pressure balancing volume 8 of the first axial sealing unit 7 with the first side surface 24 of the rotor 1, through the rotor 1 and then through the pressure balancing volume 8 of the first axial sealing unit 7 with the second side surface 25 of the rotor 1, and to the supply plenum 15.
  • the air leakages through second axial sealing unit 5, 10 or through the circumferential sealing unit 2, 6 is not shown in Figure 9 .
  • the sealing units 7, 10, 6, are arranged at the both sides of the rotor 1, so that the sealing units 7, 10, 6 are or at least one of the said sealing units are provided with a pressure balancing volume 8, 9.
  • the sealing units 7, 10, 6 may be incorporated together with the dividers 4, 5, 2, respectively.
  • the pressure balancing volume 8, 9 of the sealing units 4, 7, 5, 10, 2, 6 allow an air leakage through the side surfaces 24, 25 of the rotor 1. This air flow in the right direction as this leakage does not contaminate the air supplied to room 32.
  • the solution according to the present invention actually partially solves the problem of contamination due to the balanced pressure over the sealing unit 4, 7, 5, 10, 2, 6.
  • Figure 10 is a graph showing leakage through the rotary heat/energy recovery unit having a rotor assembly according to the present invention. Analysis and test results of the present invention, shown in figure 10 , present that reduction in the axial seal leakage is very similar to that of the prior art where a pressure balancing damper 38 is used to minimise the flow leakage, as shown in figure 5 . The leakage through the circumferential sealing unit 6 is actually decreased by 25 to 50 % in the solution of the present invention in relation to the prior art when a pressure balance damper 38 is used.
  • the solution of the present invention uses a pressure balancing volume and a pressure balancing element to complement the existing seals in the rotor assembly.
  • the rotor assembly of a heat/energy recovery unit having a rotor assembly functions such that inlet air is heated to supply air by using thermal energy of discharge air such that the discharge air is cooled to outlet air.
  • inlet air is heated by discharge air in the rotor assembly of the heat/energy recovery unit having a rotor assembly such that the inlet air becomes heated supply air and the discharge air becomes cooled outlet air.
  • the rotor assembly comprises an inlet plenum on the first side of the rotor for conducting inlet air to the rotor, a supply plenum on the second side of the rotor for receiving supply air from the rotor, a discharge plenum on the second side of the rotor for conducting discharge air to the rotor and an outlet plenum on the first side of the rotor for receiving outlet air from the rotor.
  • the rotor assembly is further provided with a circumferential sealing unit for isolating the inlet plenum from the supply plenum and discharge plenum from the outlet plenum, in other words for isolating the first side of the rotor from the second side of the rotor.
  • the rotor assembly further comprises a first axial sealing unit on the first side of the rotor for isolating the inlet plenum from the outlet plenum and a second axial sealing unit on the second side of the rotor for isolating the supply plenum from the discharge plenum.
  • the mentioned sealing units are provided with a pressure balancing volume for balancing the pressure difference over the sealing unit and for allowing an air leakage through the side surfaces of the rotor.
  • the pressure balancing volume is provided to the sealing unit between the adjacent plenums.
  • the sealing unit is further provided with sealing elements and pressure balancing elements provided between the pressure balancing volume and the adjacent plenums.
  • the pressure balancing elements are provided such that they are at least partly pressure permeable for balancing the pressure difference between the adjacent plenums in the pressure balancing volume.
  • the pressure balancing volume of the seals allow an air leakage through the side surfaces of the rotor. This air flow in the right direction as this leakage does not contaminate the air supplied to room.
  • the solution according to the present invention actually partially solves the problem of contamination due to the balanced pressure over the sealing unit.
  • the present invention has the advantage that it provides a similar function as the pressure balancing damper without the associated disadvantages since no or reduced resistance needs to be supplied to the extract ducting. Furthermore, using the pressure balancing volume of the present invention decreases or prevents the leakage problems in connection with the rotor assembly of a heat/energy recovery unit having a rotor assembly.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
EP11181948A 2011-09-20 2011-09-20 Ensemble formant rotor et unité de récupération de chaleur/énergie dotée de l'ensemble formant rotor Withdrawn EP2573496A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11181948A EP2573496A1 (fr) 2011-09-20 2011-09-20 Ensemble formant rotor et unité de récupération de chaleur/énergie dotée de l'ensemble formant rotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11181948A EP2573496A1 (fr) 2011-09-20 2011-09-20 Ensemble formant rotor et unité de récupération de chaleur/énergie dotée de l'ensemble formant rotor

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EP2573496A1 true EP2573496A1 (fr) 2013-03-27

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EP11181948A Withdrawn EP2573496A1 (fr) 2011-09-20 2011-09-20 Ensemble formant rotor et unité de récupération de chaleur/énergie dotée de l'ensemble formant rotor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016204671A1 (fr) * 2015-06-16 2016-12-22 Fläkt Woods AB Dispositif de traitement de l'air et procédé de contrôle d'une fuite d'air dans un dispositif de traitement de l'air

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105062A (en) * 1977-05-13 1978-08-08 General Motors Corporation Two-stage regenerator seal
WO1988008112A1 (fr) * 1987-04-16 1988-10-20 Fläkt Ab Echangeur thermique rotatif
EP1460349A2 (fr) * 2003-03-07 2004-09-22 Hovalwerk AG Echangeur rotatif thermique pour installation de traitement d'air
US20100200068A1 (en) * 2009-02-06 2010-08-12 Thermotech Enterprises, Inc. Dynamic purge system for a heat recovery wheel
WO2011154595A1 (fr) * 2010-06-09 2011-12-15 Swegon Ilto Oy Ensemble rotor et échangeur de chaleur rotatif comprenant un rotor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105062A (en) * 1977-05-13 1978-08-08 General Motors Corporation Two-stage regenerator seal
WO1988008112A1 (fr) * 1987-04-16 1988-10-20 Fläkt Ab Echangeur thermique rotatif
EP1460349A2 (fr) * 2003-03-07 2004-09-22 Hovalwerk AG Echangeur rotatif thermique pour installation de traitement d'air
US20100200068A1 (en) * 2009-02-06 2010-08-12 Thermotech Enterprises, Inc. Dynamic purge system for a heat recovery wheel
WO2011154595A1 (fr) * 2010-06-09 2011-12-15 Swegon Ilto Oy Ensemble rotor et échangeur de chaleur rotatif comprenant un rotor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016204671A1 (fr) * 2015-06-16 2016-12-22 Fläkt Woods AB Dispositif de traitement de l'air et procédé de contrôle d'une fuite d'air dans un dispositif de traitement de l'air
EP3311090A4 (fr) * 2015-06-16 2018-11-21 FläktGroup Sweden AB Dispositif de traitement de l'air et procédé de contrôle d'une fuite d'air dans un dispositif de traitement de l'air

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