EP2520890A1 - Echangeur thermique à rotations - Google Patents

Echangeur thermique à rotations Download PDF

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Publication number
EP2520890A1
EP2520890A1 EP11164597A EP11164597A EP2520890A1 EP 2520890 A1 EP2520890 A1 EP 2520890A1 EP 11164597 A EP11164597 A EP 11164597A EP 11164597 A EP11164597 A EP 11164597A EP 2520890 A1 EP2520890 A1 EP 2520890A1
Authority
EP
European Patent Office
Prior art keywords
cylinder end
heat exchanger
diaphragm
rotary heat
face
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Withdrawn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
EP11164597A
Other languages
German (de)
English (en)
Inventor
Martin Geiselhart
Hannes Ing. Hausbichler
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.)
Hoval AG
Original Assignee
Hoval AG
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 Hoval AG filed Critical Hoval AG
Priority to EP11164597A priority Critical patent/EP2520890A1/fr
Publication of EP2520890A1 publication Critical patent/EP2520890A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • F28D19/041—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 with axial flow through the intermediate heat-transfer medium
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2203/00—Devices or apparatus used for air treatment
    • F24F2203/10—Rotary wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/14—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification
    • F24F3/1411—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant
    • F24F3/1423—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidification; by dehumidification by absorbing or adsorbing water, e.g. using an hygroscopic desiccant with a moving bed of solid desiccants, e.g. a rotary wheel supporting solid desiccants

Definitions

  • the present invention relates to a rotary heat exchanger, and in particular a rotary heat exchanger having a circular cylindrical storage mass rotating about an axis with a plurality of flow channels and a first and a second cylinder end face, a housing covering the lateral surface of the memory mass, wherein the housing is designed such that it an inflow surface on a cylinder end face with a downstream surface on the other cylinder end face corresponds, and with a diaphragm which defines a cavity with respect to a partial surface of a cylinder end side, the partial surface of the cylinder end face partially by a Zu Kunststoffabström formation and is formed in part by a Ab povertyanström production and wherein a first portion of the cavity corresponding to the partial surface of the other Zylin the end face is part of the Zu Kunststoffanström measurements and a second portion of the corresponding cavity with the cavity surface of the other cylinder end face is part of the Ab povertyabström interpretation, so that the entering over the first section fresh air is deflected through the cavity and at
  • Rotary heat exchangers are mainly used in ventilation systems for the purpose of heat recovery by means of regenerative heat transfer.
  • a permeable storage mass usually rotates at a speed of 1 to 20 rpm and transfers heat and optionally moisture between usually two air streams, usually in the pressure loss range of 100 to 300 Pa and differential pressures of up to 2000 Pa.
  • the flow channels are still filled with warm exhaust air, if they come due to the rotation of the storage mass in the area in which cold outside air flows through them.
  • This co-rotation creates an undesirable proportion of recirculated air, since still located in the flow channels exhaust air from incoming outside air from the storage mass is moved towards the Zu Kunststoffabström configuration and leaves the storage mass together with outside air as supply air. Contaminants from the exhaust air are thus added to the supply air.
  • some rotary heat exchangers have a so-called "rinsing zone", which is arranged at the separation point between the Zu Kunststoffabström preparation and Ab povertyanström design and in which outside air is deflected in exhaust air filled with flow channels and fed from these the exhaust air, so the flow channels are largely cleaned of exhaust air when they enter the region of the fresh air inflow surface.
  • An undesirable side effect of the rinsing zone is that the scavenging air flow caused by the rinsing zone allows the thermal energy of the exhaust air intended for transfer to the fresh air or supply to escape unused into the exhaust air, thus reducing the energy efficiency of the rotary heat exchanger.
  • the invention has for its object to provide a rotary heat exchanger with improved energy efficiency.
  • the object is achieved by a rotary heat exchanger with the features of claim 1.
  • the rotary heat exchanger according to the invention has a circular-cylindrical storage mass rotating about an axis with a multiplicity of flow channels and a first and a second cylinder end face.
  • the rotary heat exchanger comprises a housing, which covers the lateral surface of the storage mass and leakage, usually using a seal out prevents the housing.
  • the housing is designed in such a way that it releases inflow and outflow surfaces assigned to one another on the cylinder end surfaces of the storage mass, wherein an inflow surface on one cylinder end face corresponds to an outflow surface on the other cylinder end face. At this inflow and outflow close to different channels (for fresh air, supply air, exhaust air and exhaust air), which are not themselves part of the rotary heat exchanger.
  • the rotary heat exchanger according to the invention further comprises a diaphragm which defines a cavity with respect to a partial surface of a cylinder end face, this cavity usually being referred to as a rinsing zone.
  • the overlapped partial surface of the cylinder end face is partially formed by a Zu Kunststoffabström formation and partially by a Ab povertyanström simulation, wherein a first portion of the cavity corresponding to the partial surface of the other cylinder end face part of the Zuluftanström measurements and a second portion of the cavity corresponding to the partial surface of the other cylinder end face is part of Ab povertyabström production in that the fresh air entering via the first section is deflected via the cavity and at least partially emerges in the second section and is supplied to the exhaust air, thereby largely cleaning the corresponding flow ducts from exhaust air.
  • the arrangement of the diaphragm on the cylinder end surface causes the direction of rotation of the storage mass, i. this rotates in a plan view of the panel to the right (and viewed from the
  • the diaphragm is designed in such a way that the partial area of the cylinder end face covered by the diaphragm can be adjusted by varying the size or dimensioning of the diaphragm.
  • the aperture is usually formed in several parts, but at the same low pressures can also be used at least partially elastic diaphragm material.
  • the extent of the amount of air that passes through the rinsing zone in the exhaust air depends, inter alia, on the currently supplied and withdrawn total air, the rotational speed of the storage mass and the size of the rinsing zone itself.
  • the rinsing zone must therefore be constructed differently depending on the system design.
  • the size of the aperture By varying the size of the aperture a simple adaptation of the rotary heat exchanger to the respective requirements is possible, and the efficiency of the rotary heat exchanger is thus significantly increased.
  • the purge air flow is always kept as low as possible and only the absolutely necessary exhaust air is flushed into the exhaust air, so that a larger part of the exhaust air can be used for heat transfer, causing the Energy efficiency of the rotary heat exchanger is increased.
  • the diaphragm comprises two sections in the form of a circular sector fixed to the housing at the axis of the storage mass, and the covered partial surface of the cylinder end surface is adjustable by adjusting the aperture angle (or midpoint angle) of the diaphragm formed by the sections ,
  • the aperture angle or midpoint angle
  • Such a design of the diaphragm is particularly preferred because of the geometry of a rotary heat exchanger, since a correspondingly shaped diaphragm is adapted in terms of its radial dimension to the relative rotational speed of the storage mass.
  • the diaphragm is fixed to the housing at the axis of the storage mass and formed by (parallel) mutually displaceable sections.
  • a trained aperture forms, for example, a height or width adjustable rectangle.
  • the size or dimensioning of the aperture can already be determined during assembly of the rotary heat exchanger by using appropriate aperture kits. However, it is preferred that the size or dimensioning of the aperture during operation of the rotary heat exchanger is adjustable, wherein it is particularly preferred that the diaphragm is associated with a servo motor, with which the area covered by the panel partial surface of the cylinder end face is adjustable.
  • the diaphragm comprises latching means with which the partial surface of the cylinder end surface covered by the diaphragm can be adjusted and fixed.
  • latching means with which the partial surface of the cylinder end surface covered by the diaphragm can be adjusted and fixed.
  • it is necessary to temporarily stop the operation of the rotary heat exchanger.
  • such a variant may be useful if a corresponding adjustment is only occasionally carried out and a cost-effective alternative is desired.
  • the diaphragm is associated with a servo motor, it is preferred that at least one flow meter is associated with the rotary heat exchanger, which is coupled via an electronic system to the servomotor, so that the diaphragm can be adjusted as a function of flow conditions by the storage mass.
  • FIG. 1 shows an oblique view of a first embodiment of the rotary heat exchanger 1 according to the invention with a arranged in a housing 4 storage mass 2.
  • the storage mass is circular cylindrical and comprises a plurality of flow channels 3 (see FIG. 2B ) and a first and a second cylinder end face 10, 20.
  • the storage mass 2 and the material thereof are usually matched to the intended use of the rotary heat exchanger 1. If the recovery of moisture is desired, the flow channels 3 are usually equipped with a corresponding material.
  • the housing 4 covers the lateral surface of the storage mass 2 such that a leakage in the housing 4 itself is largely avoided. For this purpose, a seal (not shown) is provided between the housing 4 and the storage edge.
  • the housing 4 is formed such that both cylinder end faces 10, 20 of the storage mass 2 each have a Anström- 11, 21 and an outflow surface 12, 22, said subdivision of the end faces is achieved in the embodiment shown by a belonging to the housing center spar 4b ,
  • the fresh air 51 and the supply air 52 are guided in the upper channels.
  • exhaust air 61 is supplied to the rotary heat exchanger and enters the flow channels 3 of the rotary heat exchanger 1 via an inflow surface 21, the exhaust air inflow surface.
  • the exhaust air leaves via an outflow surface 12, the Abluftabström configuration, the storage mass 2 and is continued as exhaust air 62 via a corresponding channel.
  • the rotary heat exchanger further comprises a shutter 30 comprising two sections 30a and 30b, the two sections 30a and 30b 30b are designed as circular sectors and are fixed to the axis of the storage mass to the housing 4, wherein the attachment takes place in the embodiment shown on the central spar 4b.
  • the central spar 4b itself may be guided over the entire cylinder end face, wherein care should be taken in such a guide that the cavity is designed such that a flow is ensured. Alternatively, the central spar 4b may be guided only to the axis.
  • the two sections 30 a and 30 b of the diaphragm are coordinated so that they move against each other or into each other when the size of the aperture (ie, the center angle of the formed by the aperture circle sector) is changed, taking care that the Aperture against the adjacent components is largely dense.
  • the diaphragm 30 further comprises a positioning motor 30d, by means of which the angular range of the cylinder end face 20 covered by the diaphragm, that is to say the opening angle of the circular sector, can be adjusted (by moving the circular sector sections against each other).
  • the servomotor 30d is coupled at least to a flow sensor 70a, 70b, so that the orifice 30 can be adjusted in response to, for example, the flow rate in the exhaust duct.
  • the orifice extends over a portion of the Zu Kunststoffabström nature 22 and the Abluftanström thinking 21, so that upon rotation in the direction R, the flow channels 3 of the storage mass 2 loaded with exhaust air entering the covered by the panel part of Abluftanström decoration.
  • FIG. 1B shows an oblique view of the already in Figure 1A shown embodiment, wherein the aperture 30 is changed in this figure in size, namely with respect to the aperture 30 in Figure 1A reduced.
  • the aperture 30 covers a small portion the Zu Kunststoffabström nature 22 and a small portion of Ab povertyanström thinking 21, whereby the flushing power of the aperture is indeed reduced, however, the energy recovery from the exhaust air increases because less exhaust air is flushed into the exhaust air.
  • FIG. 2B shows a schematic representation of the flow conditions in the heat exchanger associated with the channels and the storage mass 2 of the rotary heat exchanger.
  • the fresh air 51 is supplied via a corresponding channel to the rotary heat exchanger 1 and enters via the inflow surface 11 (Zu Kunststoffanström representation) in the flow channels 3 of the storage mass 2 a. Air introduced into the flow channels traverses these, absorbs the heat of the storage mass and exits from the storage mass when the flow channels are not covered by an orifice at the outflow surface 22 (supply air discharge surface) and continues as supply air 52 via a corresponding channel.
  • the rotary heat exchanger comprises the adjustable orifice 30, which covers part of the Zu Kunststoffabström requirements 22 and the Ab povertyanström requirements 21.
  • the supply air after leaving the storage mass In this section the deflected air enters the flow channels 3 again and pushes or flushes existing in this exhaust air from the flow channels on the.
  • FIG. 2A shows a second embodiment of the rotary heat exchanger according to the invention.
  • the diaphragm 40 is not designed as a circular sector, but in the exemplary embodiment shown, the diaphragm 40 is provided by two mutually displaceable rectangular diaphragm elements 40a, 40b.
  • the diaphragm elements themselves are in the axis of the storage mass 2 on a spar 4b, which belongs to the housing 4 of the rotary heat exchanger 1, attached.
  • the side facing away from the axis of the aperture 40 is mounted in the embodiment shown on a guide 42 and can be adjusted via a motor 40d in size, wherein a size adjustment in the present embodiment means a height adjustment.
  • the operation of the aperture 40 otherwise corresponds to that of the aperture 30th

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP11164597A 2011-05-03 2011-05-03 Echangeur thermique à rotations Withdrawn EP2520890A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11164597A EP2520890A1 (fr) 2011-05-03 2011-05-03 Echangeur thermique à rotations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11164597A EP2520890A1 (fr) 2011-05-03 2011-05-03 Echangeur thermique à rotations

Publications (1)

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EP2520890A1 true EP2520890A1 (fr) 2012-11-07

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Family Applications (1)

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EP11164597A Withdrawn EP2520890A1 (fr) 2011-05-03 2011-05-03 Echangeur thermique à rotations

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EP (1) EP2520890A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016106933U1 (de) 2016-12-13 2017-02-22 Kastt, Spol. S R. O. Rotationswärmetauscher-Set
EP3258184A1 (fr) 2016-06-14 2017-12-20 Emil Grüniger Dispositif pour un batiment, en particulier une piscine couverte, destine a echanger l'humidite et la chaleur
EP3336472A1 (fr) 2016-12-13 2018-06-20 Wolf GmbH Kit d'échangeur de chaleur rotatif
EP3450862A1 (fr) 2017-08-29 2019-03-06 Emil Grüniger Dispositif pour un bâtiment, en particulier pour une piscine couvete, destiné à échanger l'humidité et la chaleur

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004020680U1 (de) * 2003-06-13 2005-12-01 Klingenburg Gmbh Rotationswärmetauscher
US20080108295A1 (en) * 2006-11-08 2008-05-08 Semco Inc. Building, ventilation system, and recovery device control
US20100200068A1 (en) * 2009-02-06 2010-08-12 Thermotech Enterprises, Inc. Dynamic purge system for a heat recovery wheel
DE102009030532A1 (de) * 2009-06-24 2011-01-05 Urs Lautner Rotorsystem zur Rückgewinnung der in der Fortluft von lufttechnischen Anlagen enthaltenen Wärmeenergie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004020680U1 (de) * 2003-06-13 2005-12-01 Klingenburg Gmbh Rotationswärmetauscher
US20080108295A1 (en) * 2006-11-08 2008-05-08 Semco Inc. Building, ventilation system, and recovery device control
US20100200068A1 (en) * 2009-02-06 2010-08-12 Thermotech Enterprises, Inc. Dynamic purge system for a heat recovery wheel
DE102009030532A1 (de) * 2009-06-24 2011-01-05 Urs Lautner Rotorsystem zur Rückgewinnung der in der Fortluft von lufttechnischen Anlagen enthaltenen Wärmeenergie

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3258184A1 (fr) 2016-06-14 2017-12-20 Emil Grüniger Dispositif pour un batiment, en particulier une piscine couverte, destine a echanger l'humidite et la chaleur
DE202016106933U1 (de) 2016-12-13 2017-02-22 Kastt, Spol. S R. O. Rotationswärmetauscher-Set
EP3336472A1 (fr) 2016-12-13 2018-06-20 Wolf GmbH Kit d'échangeur de chaleur rotatif
RU2746578C2 (ru) * 2016-12-13 2021-04-15 Вольф Гмбх Комплект вращающегося теплообменника
EP3450862A1 (fr) 2017-08-29 2019-03-06 Emil Grüniger Dispositif pour un bâtiment, en particulier pour une piscine couvete, destiné à échanger l'humidité et la chaleur

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