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
  • F28D19/041—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
  • F28D19/048—Bearings; Driving 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
  • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
  • F28F2250/08—Fluid driving means, e.g. pumps, fans

Definitions

• the invention relates to a rotary heat exchanger with a housing in which two separate channels for the passage of each air flow are formed, and with an example.
• Drum-like heat exchanger element which is rotatably provided in the housing such that the heat exchanger element with each of the two channels in Contact is, wherein the heat exchanger element is associated with a drive means for generating a rotation of the heat exchanger element.
• Rotary heat exchangers of the type mentioned in the introduction are heat exchangers in which a primary medium volumetric flow and a secondary medium volumetric flow alternately flow through the same heat exchanger surfaces and thereby transfer heat or refrigeration energy to these surfaces or absorb them from these surfaces.
• a transfer of heat energy takes place, for example, from the secondary media volume flow formed by the exhaust air from a building part to the primary media volume flow formed, for example, by the supply air into a building part.
• the mutual flow is effected by the mutual rotation of the heat exchanger or of parts of the heat exchanger by respectively the primary and secondary air flow.
• EP 1 029 202 B1 proposes a rotary heat exchanger in which a swirling air flow, which is the direct outflow of an axial fan, is passed through a heat exchanger drum and causes it to rotate due to frictional forces between the air flow and the drum.
• This design not only requires that the fan is placed in the immediate vicinity of the heat exchanger, which is often not possible due to the installation situation, but it also the drive due to the very small transmission of the swirl of the air flow to the heat exchanger element is considered disadvantageous ,
• Object of the present invention in contrast, to propose a rotating heat exchanger of the type mentioned, which is cost-effective in the production and operation in a compact design and at the same time allows a particularly effective rotary drive of the heat exchanger element.
• the drive device has a turbomachine, in particular designed as an attachment roller, and means for transmitting a torque from the flow machine to the heat exchanger element.
• a turbomachine in particular designed as an attachment roller, and means for transmitting a torque from the flow machine to the heat exchanger element.
• the flow energy inherent in the primary and / or secondary air flow is used in part to produce the rotational movement of the heat exchanger element.
• a turbomachine is a device which uses an axial, radial and / or tangential air flow in order to generate a rotation by means of vanes, blades or the like.
• an attachment roller is arranged coaxially with the axis of rotation of the heat exchanger element on the one end face of the housing, which is flown to generate the rotation of the heat exchanger element of one of the two air streams.
• the rotation of the heat exchanger element can be generated by flowing the repeller with an axial air flow of at least one of the two air streams. This can be done, for example, by providing an attachment roller with front-flowed propeller blades on or in the housing, wherein the torque for driving the heat exchanger element is generated by the flow through the attachment roller with one of the two air streams.
• the channels are arranged relative to the turbomachine such that only one of the two air streams acts on the turbomachine, while the other of the two air streams of the Turbomachine is routed away and / or foreclosed against this.
• one of the two air streams can be passed substantially axially and without deflection by the housing and drive the turbomachine, while the other air flow is deflected within the housing by 90 °, so as not to come into contact with the turbomachine.
• the turbomachine is a turbine driven by at least one of the two air streams through radial and / or tangential air flow.
• the attachment roller can be formed as a turbine blade, which, for example, has a radial flow, wherein the airflow that drives the turbomachine can be introduced laterally into the housing of the heat exchanger.
• the heat exchanger is operated in the countercurrent principle, ie if the air streams flow through the housing at least in sections in the opposite direction.
• a, in particular mechanical, braking device is provided, which decelerates the rotation of the heat exchanger element defined and / or stops at predetermined time intervals. In this way, an intermittent rotation of the heat exchanger element can be generated. It is particularly preferred if the heat exchanger element clocked by a mechanical device or the braking device each performs a rotation of 180 °.
• the heat exchanger according to the invention is preferably designed such that the heat exchanger element is mounted in its axis of rotation so that the rotational movement is opposed as little resistance as possible.
• the channels are sealed against one another by means of at least one front-side sealing roller. Sealing rolls are distinguished by a comparatively low frictional resistance due to their synchronous with the heat exchanger element rotational movement.
• the invention further relates to a ventilation system with at least one rotating heat exchanger of the above type, wherein at least one fan is provided, which promotes at least one of the two air streams through one of the channels of the heat exchanger.
• the fan supplies the time required for the rotational drive of the heat exchanger element flow energy.
• recuperative properties of the rotating heat exchanger are in addition to size, design, surface structure and material used of the heat exchanger element also dependent on the rotational speed.
• inventive self-rotating heat exchanger are preferably the number, shape, size and arrangement of Wing in the attachment roller or the turbomachine designed and designed so that the corresponding to the respective air flow rotational speed of the desired or optimal rotational speed corresponds as possible.
• the rotational speed of the heat exchanger element can be adjusted by determining the rotational speed by means of a suitable sensor and by an example digital electronic controller for optimizing the furnished energieübertragungs- or - back trenchungsreaes by the rotational speed of the heat exchanger element is tuned by fine control of the flow velocity of the air streams.
• the heat exchanger is preferably associated with at least one sensor for detecting the rotational speed of the heat exchanger element, which is connected to a device for controlling or regulating the fan. In this way, the energy content, the temperatures, the nature, the humidity or the consistency, as well as the flow rate of the air streams defined set.
• This embodiment of the ventilation system according to the invention not only allows an optimization of the purely thermal planteenergieübertragung- or -recovering, but also allows optimization of dehumidification or rewetting in a rotating air heat exchanger.
• the ventilation system according to the invention may additionally comprise at least one sensor for detecting the temperature and / or humidity of the heat exchanger element and / or at least one of the two air flows, wherein the sensor is connected to a device for controlling or regulating the fan.
• the controller can also be used to overcome a possibly higher starting resistance of the heat exchanger element by pulse-like a momentarily higher air flow is generated by the fan.
• the clock frequency or the control of the rotation by 180 ° of the heat exchanger element can also take place via the eg digital electronic control of the ventilation system.
• FIG. 1 is a perspective view of a heat exchanger according to the invention.
• FIG. 2 shows a longitudinal section through the heat exchanger according to FIG. 1.
• the heat exchanger 1 shown in the figures essentially consists of a box-like housing 2, a heat exchanger element 3 arranged therein and a turbomachine 4.
• Two channels 5a, 5b are formed in the housing 2 and extend in regions parallel to one another.
• the channels 5a and 5b for example, part of a ventilation system not shown in the figures, wherein in the illustrated embodiment exhaust air flows from a building through the channel 5a and outside air is introduced via the channel 5b in the building.
• the first channel 5a extends for the exhaust air between a Inlet opening 6a and an outlet opening 7a substantially parallel to the channel 5b.
• a deflection section 8 connects, so that the exhaust air flow in Figure 1 can escape upwardly from the housing 2.
• the outside air flow from an inlet 6b to an outlet 7b of the second channel 5b is substantially without deflection in the axial direction.
• the channels 5a and 5b are separated from each other by a central web 9.
• the heat exchanger element 3 is rotatably mounted in the housing 2 on an axis 10 which lies in the plane of the web 9.
• the turbomachine 4 designed as an attachment roller with propeller blades 11 in the illustrated embodiment is also rotatably mounted on the axle 10 and rotatably connected in a suitable manner to the heat exchanger element 3, so that rotation of the turbomachine 4 causes rotation of the heat exchanger element 3.
• the propeller blades 11 of the turbomachine 4 are flown frontally through the outside air flow, wherein the propeller blades 11 are configured in such a way that rotation of the turbomachine 4 and thus rotation of the heat exchanger element 3 are effected.
• the exhaust air flow through the deflection section 8 is sealed off from the turbomachine 4 in such a way that the exhaust air flow does not decelerate the turbomachine 4 by a corresponding action.

Landscapes

• 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)

Applications Claiming Priority (2)

Publications (1)

Family

ID=39760778

Family Applications (1)

Country Status (10)

Families Citing this family (6)

Family Cites Families (9)

• 2007
  • 2007-06-13 DE DE200710027840 patent/DE102007027840A1/de not_active Withdrawn
• 2008
  • 2008-05-09 CN CN200880019966A patent/CN101680725A/zh active Pending
  • 2008-05-09 EP EP08758438A patent/EP2156129A1/de not_active Withdrawn
  • 2008-05-09 MX MX2009013572A patent/MX2009013572A/es unknown
  • 2008-05-09 DE DE202008017485U patent/DE202008017485U1/de not_active Expired - Lifetime
  • 2008-05-09 WO PCT/EP2008/003752 patent/WO2008151700A1/de active Application Filing
  • 2008-05-09 CA CA002687842A patent/CA2687842A1/en not_active Abandoned
  • 2008-05-09 BR BRPI0813816-8A2A patent/BRPI0813816A2/pt not_active Application Discontinuation
  • 2008-05-09 JP JP2010511509A patent/JP2010529412A/ja active Pending
  • 2008-05-09 AU AU2008261323A patent/AU2008261323A1/en not_active Abandoned
  • 2008-05-09 RU RU2010100756/06A patent/RU2010100756A/ru unknown

Non-Patent Citations (1)

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