EP3921582A1 - Wärmeübertragungssystem und belüftungsanlage - Google Patents
Wärmeübertragungssystem und belüftungsanlageInfo
- Publication number
- EP3921582A1 EP3921582A1 EP20714682.0A EP20714682A EP3921582A1 EP 3921582 A1 EP3921582 A1 EP 3921582A1 EP 20714682 A EP20714682 A EP 20714682A EP 3921582 A1 EP3921582 A1 EP 3921582A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- heat exchanger
- heat transfer
- transfer system
- flow
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims abstract description 109
- 238000009423 ventilation Methods 0.000 claims abstract description 34
- 241001489106 Laccaria laccata Species 0.000 claims description 13
- 239000011358 absorbing material Substances 0.000 claims description 6
- 239000011796 hollow space material Substances 0.000 abstract 2
- 230000032258 transport Effects 0.000 description 6
- 239000002245 particle Substances 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 150000004681 metal hydrides Chemical class 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/007—Ventilation with forced flow
- F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
-
- 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
-
- 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
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
- F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
-
- 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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0014—Recuperative heat exchangers the heat being recuperated from waste air or from vapors
-
- 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
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0012—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form
- F28D9/0018—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the apparatus having an annular form without any annular circulation of the heat exchange media
-
- 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
Definitions
- the invention relates to a heat transfer system for use in a ventilation system, with a heat exchanger which has an outer area and an inner area enclosed by the outer area, with flow channels for a first fluid and for a second fluid being arranged in the outer area and with the inner area having a Provides cavity, and with at least one
- Flow generating device for generating a fluid flow in the heat exchanger, which has a ventilation unit and a drive unit.
- the invention also relates to a ventilation system with a heat transfer system according to the invention.
- a generic heat transfer system is known from WO 2016/096965 A1.
- a hollow cylindrical heat exchanger is disclosed there, one in front of its flow inlets and flow outlets
- Flow generating device is arranged in the form of a fan.
- the ventilation unit and drive unit are each combined in a compact unit and arranged outside the heat exchanger.
- the invention proposes a generic heat transfer system which is characterized in that the drive unit is arranged in the cavity of the heat exchanger.
- the solution according to the invention on the one hand synergistically reduces the overall space requirement of the heat transfer system by using the structural cavity, which remains unused in the heat exchanger known from the prior art, to accommodate the drive unit.
- the space that was provided in the prior art for the drive unit outside the heat exchanger can advantageously be saved in this way.
- the drive unit is sufficiently cooled during normal operation in order to remain operational even under high load.
- the heat transfer system has a
- Flow generating device on.
- it serves the purpose of generating a fluid flow in the heat exchanger, in particular in the flow channels for the first and second fluid.
- it has a ventilation unit and a drive unit.
- the ventilation unit preferably has at least one rotor with at least one impeller and a drive shaft.
- the impeller has at least two, preferably 5, more preferably 7 rotor blades.
- the drive unit is formed by an electric motor.
- the electric motor is connected to an energy source.
- This can preferably be formed from an accumulator, in particular a lithium-ion accumulator or a metal hydride accumulator.
- the accumulator is part of the heat transfer system and is preferably also arranged within the cavity of the heat exchanger.
- the drive unit can be supplied with energy from an external energy source, for which purpose it has the necessary connections.
- the drive unit is drive-connected to the ventilation unit.
- the drive unit and ventilation unit are preferably connected to one another by means of the drive shaft of the ventilation unit.
- the ventilation unit has at least two rotors. It is provided that the rotors are driven by only one drive unit. In this way, with a further advantage over the prior art, each ventilation unit is not provided with its own drive unit. Both space requirements and cooling of the
- the two rotors can preferably each be connected to the drive unit via a separate drive shaft and are connected as intended.
- the heat exchanger is designed as a hollow cylinder.
- the flow channels for the first fluid and the second fluid are arranged to run essentially in the axial direction of the heat exchanger. "Essentially” in the context of the invention means that flow inlets and / or flow outlets formed at the end of the flow channels are at least partially also in radial direction of the
- Heat exchanger can be aligned. Accordingly, that section of a flow channel which is arranged between the flow inlet on one end and the flow outlet on the other end is preferably arranged to run in the axial direction of the heat exchanger.
- the drive unit or its housing is preferably cylindrical.
- the cylindrical housing particularly preferably has an outer radius which corresponds to the inner radius of the hollow-cylindrical heat exchanger.
- the radial dimensions of the drive unit or its housing are preferably smaller than the radial dimensions of the cavity of the heat exchanger, with one drive shaft or both drive shafts of the drive unit being or are arranged on and along the cylinder axis of the hollow-cylindrical heat exchanger.
- the remaining cavity between the outer surfaces is the Drive unit and the cavity-side inner surfaces of the hollow cylinder filled with a sound-absorbing material.
- the sound-absorbing material is in the form of a solid. It can be a porous, in particular foam-like structure and is preferably elastically compressible.
- a sound-absorbing material in the form of a sleeve which enables the drive unit to be supported in the interior of the cavity of the heat exchanger, is particularly advantageous.
- a rotationally symmetrical sleeve is particularly preferred, which enables a coaxial, sound-insulated mounting of the drive unit in the interior of the hollow-cylindrical heat exchanger.
- the sound-absorbing material is foamed when assembling the heat transfer system according to the invention.
- the drive unit is fixed coaxially inside the hollow-cylindrical heat exchanger, so that a drive shaft or both drive shafts of the drive unit is or are arranged on and along the cylinder axis of the hollow-cylindrical heat exchanger, whereupon the remaining cavity between the outer surfaces of the drive unit and the cavity-side inner surfaces of the Hollow cylinder is foamed with the sound-absorbing material.
- This also enables a coaxial, sound-insulated mounting of the drive unit in the interior of the hollow-cylindrical heat exchanger.
- the hollow cylindrical heat exchanger preferably has flow inlets for the first fluid and flow outlets for the second medium on one end in the axial direction. At the other end, the heat exchanger has flow inlets for the second fluid and flow outlets for the first fluid in the axial direction.
- the flow channels and the inlets and outlets are arranged in the outer area in the radial direction of the heat exchanger.
- the cavity is provided by the inner region in the radial direction of the heat exchanger.
- the cavity preferably has an opening in the axial direction of the heat exchanger at least on one end, preferably on both ends. It is provided that the mechanical drive shaft of the drive unit is guided through the opening to the ventilation unit.
- the heat transfer system preferably has a first rotor on the inlet side of the first fluid.
- the heat transfer system also preferably has a rotor on the inlet side of the second fluid.
- the drive unit arranged in the inner cavity of the heat exchanger is connected to both rotors via a drive shaft each, which are each guided through one of the openings on both ends of the cavity.
- the flow channels are formed between individual plates.
- the individual individual plates have corresponding depressions and elevations for this purpose.
- the hollow-cylindrical plate heat exchanger is preferably composed of a large number of individual plates which are arranged radially around the central axis of rotation of the cylinder. Immediately adjacent individual plates are arranged in cross section at an angle of at most 4 °, preferably at most 3 °, particularly preferably at most 2 °, to one another. In this case, an inner and outer area of the heat exchanger in the radial direction is defined, the individual plates being arranged exclusively in the outer area and completely enclosing the inner area providing the cavity in the radial direction.
- This configuration is particularly suitable for being used in ventilation pipes with a circular cross-section, since the hollow-cylindrical plate heat exchanger also has a circular cross-section.
- the hollow cylindrical heat exchanger has an outer diameter of at most 250 mm, preferably from 150 mm to 250 mm, preferably from 170 mm to 210 mm, particularly preferably 180 mm to 200 mm.
- the hollow-cylindrical heat exchanger has an inner diameter (diameter of the cavity) of a maximum of 140 mm, preferably 70 mm to 140 mm, preferably 80 mm to 120 mm, particularly preferably 90 mm to 110 mm.
- the hollow cylindrical heat exchanger has a length in the axial direction of a maximum of 300 mm, preferably from 170 mm to 300 mm, preferably 180 mm to 270 mm, particularly preferably from 200 mm to 240 mm.
- This configuration is particularly suitable for being used in ventilation pipes with corresponding dimensions. These dimensions have proven to be comparatively advantageous in terms of performance and space requirements.
- the heat transfer system has a first fluid filter. This serves to avoid contamination of the heat exchanger by particles that are contained in the fluids, in particular in air can.
- the impeller of the first rotor is preferably arranged between the first fluid filter and the heat exchanger.
- the heat transfer system has a second fluid filter. Like the first fluid filter, this serves to avoid contamination of the heat exchanger by particles which can be contained in the fluids, in particular in air.
- the impeller of the second rotor is preferably arranged between the second air filter and the heat exchanger.
- the fluid filters are particularly preferably designed as air-particle filters.
- the invention also relates to a ventilation system for ventilating rooms, especially in halls, apartments, houses and the like, having at least one pipe for guiding air and a heat transfer system according to the invention, the heat transfer system being arranged inside the at least one pipe.
- the heat transfer system according to the invention is ideally suited for decentralized ventilation systems due to its compactness and performance. Such systems have comparatively few tubes or often only a single tube with only one heat transfer system. Such systems are used, for example, for the self-sufficient ventilation of individual rooms without these rooms having to be connected to a central ventilation system.
- the ventilation systems according to the invention are therefore particularly suitable for retrofitting existing buildings. In this case, the two fluids are formed by air at different temperatures. Classically on the one hand indoor air and on the other hand outside air.
- the pipe has pipe channels on the inside for separate inflow and outflow of the first fluid and the second fluid, which can be fluidically connected to the heat transfer system. In this way, disadvantageous mixing of the two fluids outside the heat transfer system is advantageously prevented.
- the pipe channels run at least in sections in the axial direction of the pipe and are arranged coaxially to one another.
- the respective inner pipe channels are preferably connected to the flow inlets of the respective fluids of the heat transfer system Connectable fluidically, or connected as intended.
- the outer pipe channels can be fluidically connected to the flow outlets of the respective fluids of the heat transfer system, or are connected as intended. This ensures an efficient and space-saving supply and discharge of the fluids within the pipe.
- the heat exchanger is designed for heat transport and / or selective material transport between a first fluid and a second fluid, which can flow through the heat exchanger, the heat exchanger being made up of a large number of adjacent local exchanger elements, the heat exchanger at least in partial areas has the shape of a cylinder or a segment thereof or the shape of a prism with a polygonal base or a segment thereof.
- the deceiver elements are expediently flat structures with their large surfaces lying against one another.
- flat structures can e.g. from thin plates made of metal, made of polymer or made of metal / polymer composite material by simple forming or injection molding, typically in one step, provided with a three-dimensional structure. It is particularly advantageous if all deceiver elements are identical structures. This saves tool costs and logistics costs.
- the heat exchanger expediently has a countercurrent area which is suitable due to a particularly pronounced heat exchange and / or mass exchange between the two countercurrent fluids.
- the heat exchanger also expediently contains a cross-flow area.
- the heat exchanger preferably contains such a cross-flow area in an area in which the first fluid flows in and the second fluid flows out.
- the heat exchanger preferably contains in an area in which the second fluid flows in and the first fluid flows out, such a cross-flow area.
- the heat exchanger contains a first such crossflow area in the area in which the first fluid flows in and the second fluid flows out, and a second such in the area in which the second fluid flows in and the first fluid flows out Contains cross flow area.
- the heat exchanger has the shape of a cylinder or a segment thereof or the shape of a prism with a polygonal base area or a segment thereof in the countercurrent area.
- the local exchanger elements of the heat exchanger each contain a first chamber region through which the first fluid can flow from a first fluid inlet region to a first fluid outlet region, and a second chamber region through which the second fluid flows from a second fluid inlet region a second fluid outlet area, wherein the first chamber area and the second chamber area adjoin one another in an adjoining area and are separated from one another in this area by means of a membrane-like wall, which transports heat and / or selective substance transport between the first fluid flowing in the first chamber area and the allows second fluid flowing in the second chamber region.
- exchanger element or “element” for short stands for a geometrical-spatial basic unit of the heat exchanger, which in principle works on its own, but works optimally with neighboring exchanger elements.
- the arrangement contains a first global fluid entry area and a first global fluid exit area as well as a second global fluid entry area and a second global fluid exit area, wherein the arrangement of the first fluid from the first global fluid entry area to the first global Fluid outlet area can be flowed through and the second fluid can flow through from the second global fluid inlet area to the second global fluid outlet area.
- Each local element contains a first local chamber area through which the first fluid can flow from a first local fluid inlet area to a first local fluid outlet area, and a second local chamber area which the second fluid carries from a second local fluid Entrance area to a second local Fluid outlet area can be flowed through.
- the first local chamber area and the second local chamber area of a local element adjoin one another in an adjoining area within the respective element.
- Adjacent local chamber areas within an element and from element to element in the respective adjoining area are separated from one another by means of a membrane-like wall, which each transports heat and / or selective substance transport between the first fluid flowing in the first local chamber area and that in the second local Chamber area allows flowing second fluid.
- the entirety of the first local fluid entry areas of the deceiver elements forms the first global fluid entry area of the deceiver arrangement.
- the local deceiver elements are wedge-shaped at least in partial areas of the heat exchanger in which the heat exchanger has the shape of a cylinder or a segment thereof or the shape of a prism with a polygonal base or a segment thereof. They are spatially bounded by a first wedge surface and a second wedge surface spaced apart and inclined therefrom, a first side surface and a second side surface spaced apart therefrom, and a first end surface and a second end surface spaced apart therefrom, which is larger than the first end surface.
- the exchanger element is wedge-shaped and is spatially delimited by a first wedge surface and a second wedge surface spaced therefrom and inclined therefrom, a first side surface and a second side surface spaced apart therefrom and a first end surface and a second end surface spaced apart therefrom, which are larger than is the first face.
- a first fluid inlet area and a second fluid outlet area can be arranged on the first end face and a second fluid inlet area and a first fluid outlet area can be arranged on the second end face. This is suitable for a radial flow through cylindrical or partially cylindrical and prismatic or partially prismatic heat exchangers.
- the first fluid inlet area and the second fluid outlet area are preferably designed as a first crossflow area and the second fluid inlet area and the first fluid outlet area are designed as a second crossflow area.
- FIG. 1 shows a heat exchanger according to the invention in a perspective view
- 2 shows a single plate of the heat exchanger according to the invention in a perspective illustration
- FIG. 4 shows a heat transfer system according to the invention in schematic form
- Sectional view; 5 shows a ventilation system according to the invention in a perspective view.
- FIG. 1 shows a heat exchanger 2 of a heat transfer system 1 shown in FIG. 4.
- the heat exchanger 2 is designed as a hollow cylinder. It is divided into an outer area 3 and an inner area 4.
- the inner area 4 provides a cavity 5.
- the cavity 5 has a circular cross section. It has openings 6 at both ends in an axial direction of the heat exchanger 2.
- the various flow channels 7, 8 (shown in FIG. 3) for a first and a second fluid are arranged in the outer region 3.
- the flow channels 7, 8 are formed between individual plates 9.
- the heat exchanger 2 in the present case has an outside diameter of 180 mm. Furthermore, the heat exchanger 2 has an inner diameter (diameter of the cavity) of 100 mm. The length of the heat exchanger 2 is 200 mm in the axial direction. The angles between immediately adjacent individual plates 9 are 2 ° in the present case.
- FIG. 2 shows an individual plate 9 of the heat exchanger 2.
- the individual plate 9 has elevations 10 and depressions 11.
- the flow channels 7, 8 are formed between corresponding elevations 10 or depressions 11 of the individual plates 9 adjacent in the heat exchanger.
- the individual plate 9 has an inflow cross section 12 and an outflow cross section 13 for the first fluid and an inflow cross section 14 and an outflow cross section 15 for the second fluid.
- Corresponding cross sections 2, 13, 14, 15 result in flow inlets or flow outlets for the two fluids between the individual plates 9 as intended.
- the individual plate 9 has three spacers 16 at each end. These are formed by punching in the individual plate 9.
- the individual plate is formed from a plastic and manufactured by means of an injection molding process.
- Figure 3 shows the heat exchanger 2 in a perspective cross-section. The flow channels 7 and 8 for the first and the second fluid can be seen.
- FIG. 4 shows a heat transfer system 1 according to the invention in a schematic representation in longitudinal section along the axis of rotation of the heat exchanger 2.
- the heat exchanger 2 is shown with the outer region 3 and the inner region 4, having the cavity 5.
- rotors 17, 18 are arranged on both ends of the heat exchanger 2.
- the first rotor 17 has a first impeller 19 and a first drive shaft 21.
- the second rotor 18 has a second impeller and a second drive shaft 22.
- the heat transfer system 1 also has a drive unit 23.
- the drive unit 23 is arranged completely in the cavity 5 of the heat exchanger 2. It is completely enclosed by the outer region 3 of the heat exchanger 2 and surrounded in the radial direction by the individual plates 9 and the flow channels 7, 8.
- the drive unit 23 has an electric motor and a lithium-ion battery.
- the drive unit 23 is connected in terms of drive technology to the first impeller 19 via the first drive shaft 21.
- the first drive shaft 21 is guided through the corresponding opening 6.
- the drive unit 23 is likewise connected in terms of drive technology to the second impeller 20 via the second drive shaft 22.
- the second drive shaft 22 is guided through the corresponding opening 6.
- the first and second drive shafts 21, 22 are aligned with one another in the direction of their axes of rotation.
- FIG. 5 shows a ventilation system 24 according to the invention.
- the ventilation system 24 has a single pipe 25.
- the heat transfer system 1 is arranged in the tube 25.
- the heat exchanger 2 and tube 25 are aligned coaxially with one another.
- the pipe 25 provides pipe channels 26, 27.
- the pipe channels 26, 27 are arranged coaxially to one another.
- the outer pipe channel 27 serves to discharge the first fluid.
- the inner pipe channel 26, serves to supply the second fluid.
- the tube 25 carries flow guide elements 28, 29 on both ends.
- the flow element 29 has an air inlet 30 for the second fluid and an air outlet 31 for the first fluid.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019102848 | 2019-02-05 | ||
PCT/IB2020/050791 WO2020161578A1 (de) | 2019-02-05 | 2020-01-31 | Wärmeübertragungssystem und belüftungsanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3921582A1 true EP3921582A1 (de) | 2021-12-15 |
Family
ID=70009007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20714682.0A Pending EP3921582A1 (de) | 2019-02-05 | 2020-01-31 | Wärmeübertragungssystem und belüftungsanlage |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3921582A1 (de) |
WO (1) | WO2020161578A1 (de) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005035712A1 (de) * | 2005-07-27 | 2007-02-01 | Bachmaier, Josef | Kompaktlüftungsgerät mit Wärmerückgewinnung |
DE102006001724A1 (de) * | 2006-01-13 | 2007-07-19 | Valentin Rosel | Paket-Wandluftwärmetauscher mit Zu- und Abluftventilator |
US20080031735A1 (en) * | 2006-08-01 | 2008-02-07 | Yu-Lung Chen | Single-Shaft Dual-Direction Fan Assembly |
EP2325573B1 (de) * | 2009-11-19 | 2015-09-09 | Poloplast GmbH & Co. KG | Gebäude-Be-und Entlüftungsvorrichtung |
EP3234489B1 (de) | 2014-12-18 | 2020-04-08 | Zehnder Group International AG | Wärmeübertrager und lufttechnisches gerät damit |
-
2020
- 2020-01-31 EP EP20714682.0A patent/EP3921582A1/de active Pending
- 2020-01-31 WO PCT/IB2020/050791 patent/WO2020161578A1/de unknown
Also Published As
Publication number | Publication date |
---|---|
WO2020161578A1 (de) | 2020-08-13 |
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