WO2011087381A1 - Coaxial air to air heat exchanger for circumferential window frame installation - Google Patents
Coaxial air to air heat exchanger for circumferential window frame installation Download PDFInfo
- Publication number
- WO2011087381A1 WO2011087381A1 PCT/PL2010/000033 PL2010000033W WO2011087381A1 WO 2011087381 A1 WO2011087381 A1 WO 2011087381A1 PL 2010000033 W PL2010000033 W PL 2010000033W WO 2011087381 A1 WO2011087381 A1 WO 2011087381A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- heat exchanger
- ducts
- accommodation
- coaxial
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- 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
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
- E06B7/10—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses by special construction of the frame members
-
- 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
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
- F24F7/08—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/103—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of more than two coaxial conduits or modules of more than two coaxial conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
- E06B2007/023—Air flow induced by fan
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
- E06B2007/026—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses with air flow between panes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/20—Details or features not otherwise provided for mounted in or close to a window
-
- 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 circumferential and coaxial heat exchanger, in particular used 5 for the stabilization of required temperature level in heated and/or cooled accommodations.
- the air is cooled (conditioned) by cooling of the air in basically two types of air-conditioners: in the recent solutions, by air conditioners, cooling the air that is present in the accommodation (practically working in closed air cycle), 20 in the older solutions, by air-conditioners, cooling the air supplied from the outside of accommodation.
- the heating and cooling equipment is using the energy from the outside of the operated system.
- Another solution of the air-to-air type heat exchanger is a system of convection ventilation in a form of recuperator, located in the window frame, or glass doors, known from the German Patent Description DE 3802583.
- the ducts supplying the air are situated in parallel with regard to each other, whereas the openings for air inlet and outlet are situated side-by-side in the upper part of frame.
- the air flow can be additionally assisted by the fans, situated on the outside part of frame, whilst the whole heat exchanger is reinforced by a special section.
- This system is characterized by low output, which is due to the fact, that the length of the heat exchanging part of ducts is limited mainly to the vertical part of window or doors frame.
- the horizontal elements of frame are used as the location of air inlets and outlets, as well as that for the fans.
- the low output of discussed system is affected by mutual location of the ducts, which is significantly reducing the surface of heat exchange.
- Another disadvantage is close location of the air inlet and outlet ports, resulting in a partial mixing up of the drawn-in and blown out air streams.
- the metal section, that is stiffening the window frame serves as an external enclosure of heat exchanger portion only, and is not actively involved in a desirable exchange of heat.
- the circumferential and coaxial heat exchanger according to the invention consisting of frame, ducts for supplied and discharged air, as well as fans, is characterized in that, it is made up of at least one internal diaphragm, situated coaxially with the external enclosure and separating at least two tightly divided coaxial ducts for the supplied and discharged air.
- the internal diaphragm, separating the air ducts is made of material combining high thermal conductivity, resistance to corrosion and adequate strength parameters (preferably aluminium alloys), and the shape of its cross-section is corresponding to the to the shape of external enclosure, taking into consideration necessity of ensuring the tightness, maximization of the thermal conduction surface, as well as longitudinal and transverse rigidity of the diaphragm, as well as minimization of its thickness, taking into consideration the efficiency of thermal conduction.
- the two newly created ducts are alternately serving the air supplied to, and discharged from the accommodation.
- Advantages of the heat exchanger include:
- a heat exchanger being the subject of this invention, allows also for significantly improved insulation of the accommodation from external noises, as compared with hitherto employed solutions, e.g. by elimination of used so far unsealing systems of windows for ventilation purposes, and also for reduction of energy costs and attending the system, thanks to the elimination of some structural and functional elements that have been used hitherto, such as e.g. a complex unsealing-and-half-opening furniture, necessity of window opening - the frame-casement unit, vertical and horizontal ventilation ducts in the building, or dimimshing of the size of the heatmg-and-air-conditioning installation.
- hitherto employed solutions e.g. by elimination of used so far unsealing systems of windows for ventilation purposes, and also for reduction of energy costs and attending the system, thanks to the elimination of some structural and functional elements that have been used hitherto, such as e.g. a complex unsealing-and-half-opening furniture, necessity of window opening - the frame-casement unit, vertical and horizontal
- fig. 1 shows vertical section of heat exchanger
- fig. 2 shows the heat exchanger section drawn along the line A-A as marked in fig. 1
- fig. 3 shows the exchanger fragment section, drawn along the line C-C as marked in fig 1
- fig. 4 shows the exchanger fragment section drawn along the line Z-Z as marked in fig 1
- fig. 5 shows the perspective view of the exchanger fragment section, drawn along the line P-P as marked in fig 1
- fig. 6 shows the transverse section of air ducts in the embodiment employing more than one internal diaphragm.
- the internal diaphragm 1 situated coaxially with the external enclosure 2, is separating two tightly divided coaxial ducts 3 and 4 for the supplied and discharged air, whilst the internal diaphragm 1 is separating transverse surfaces of the internal sections of ducts 3 supplying air for the accommodation to the transverse surfaces of ducts 4 discharging air from the accommodation, in a ratio of 1 : 1.
- the internal diaphragm 1 is smooth, or has at least one-sided longitudinal grooves or steps.
- the internal diaphragm 1 is fitted with the four, integrated with its external surface longitudinal fins 5, which are serving for the stabilization of internal diaphragm 1 in the external enclosure 2, at the same time increasing rigidity of the whole heat exchanger, and also increasing the surface of heat exchange.
- holes 6, 7. 8, 9, which are ending with the relevant air ducts, and are supplying and discharging the air to/from heat exchanger, are arranged in relation to the accommodation, on the external (from the side of accommodation) as well as on the external (outside of accommodation) side of heat exchanger, whilst the holes 6 and 9 are situated on the internal side of heat exchanger, on the other hand, the holes 7 and 8 are arranged on the external side of exchanger.
- each duct 3 and 4 which is used for the supplied and discharged air in each direction of air flow, there is a fan 10, used for forcing the air circulation in this duct.
- Internal diaphragm 1 can be smooth, or when it is justified, is fitted with one- sided or two-sided longitudinal grooves or steps.
- Such solution allows also for maintaining the rigidity of internal diaphragm 1, which is essential, considering its function of stiffening the exchanger rigidity, and at the same time reducing its thickness (weight), and increasing the thermal conduction surface, which allows to increase the heat exchanger thermal efficiency.
- the internal diaphragm 1 creates the separation of transverse surfaces of the internal sections of ducts 3 supplying air to the accommodation, to the transverse surfaces of ducts 4 discharging air from the accommodation, in a ratio of 1:1.
- the tolerance of this ratio can amount up to + 30%, taking into account the specific condition of employing the exchanger, e.g. differential pressure between the accommodation and surroundings, occurring winds, and other methods of air exchange, as employed in the accommodation serviced.
- the section of external enclosure 2 profiles can be of any geometrical shape, advantageously corresponding to the standard contours of shapes used in a typical -window and door sections (e.g.
- window panels door leaves fixing and/or replacement, as well as necessary window furniture This can be made of any material, ensuring proper mechanical properties (rigidity), resistance to the weather conditions (heat, light, humidity), and appropriate level of thermal insulation (thermal conductivity and leak-tightness).
- proper mechanical properties rigidity
- resistance to the weather conditions heat, light, humidity
- appropriate level of thermal insulation thermal conductivity and leak-tightness.
- Preferable is the use of wood and its derivatives, plastics, composite materials, metals and their appropriate combinations.
- Control of air-flow in the ducts 3 and 4 is in principle effected by the control of the appropriate fans 10: done manually by the user, or on the basis of automatic readings of the relevant sensors (temperature, air velocity, humidity, chemical analysis of the air, mechanical impurities), by means of switches controlled by the programmable microprocessor with possibility of setting by the user of his preferences for each heat exchanger and/or a group of heat exchangers, for each window opening/door- way, and/or for the whole accommodation, and/or for the whole building.
- air ducts are serving alternately the air supplied to, and air discharged from the accommodation, which is shown in the embodiment presented in fig. 6; where the ducts 3a and 3b serve for supplied air, whereas the ducts 4a and 4b serve for discharged air.
- fans can be adopted for operation in one direction only (higher fan efficiency at lower flexibility in controlling the heat exchanger), or else in two directions (lower fan efficiency and higher flexibility in controlling the heat exchanger).
- Arrangement of two holes should take into consideration the specific conditions of heat exchanger operation, such as e.g. distribution of temperature within the accommodation and outside, at the same time it should ensure to the highest extent, the counter-current flow of supplied and discharged air to and from the accommodation, considering the possibility of taking advantage of higher efficiency offered by counter-current heat exchangers, and also should minimize the possibility of mixing up of the supplied and discharged air to/from the accommodation.
- the relevant holes should be located on the walls of exchanger, by which the mutually cooperating exchangers adhere one to another.
- the heat exchanger can be used in various combinations in every segment, and can be located in both external part (window/door frame), as well as in the internal part (movable door leaf/casement).
- each heat exchanger can operate independently, or by appropriate connection of air ducts, the heat exchangers can also operate as one exchanger with lengthened path of heat exchange.
- the heat exchanger can be easily supplemented by filters regulating the chemical constitution of air, eliminating the allergenic or mechanical impurities.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2010341917A AU2010341917A1 (en) | 2010-01-18 | 2010-04-30 | Coaxial air to air heat exchanger for circumferential window frame installation |
US13/522,541 US20120285666A1 (en) | 2010-01-18 | 2010-04-30 | Coaxial air to air heat exchanger for circumferential window frame installation |
RU2012134998/12A RU2012134998A (en) | 2010-01-18 | 2010-04-30 | COAXIAL AIR / AIR HEAT EXCHANGER FOR INSTALLATION IN A RING WINDOW FRAME |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL390218A PL390218A1 (en) | 2010-01-18 | 2010-01-18 | Envelope heat exchanger |
PLP.390218 | 2010-01-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011087381A1 true WO2011087381A1 (en) | 2011-07-21 |
Family
ID=42667896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/PL2010/000033 WO2011087381A1 (en) | 2010-01-18 | 2010-04-30 | Coaxial air to air heat exchanger for circumferential window frame installation |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120285666A1 (en) |
AU (1) | AU2010341917A1 (en) |
PL (1) | PL390218A1 (en) |
RU (1) | RU2012134998A (en) |
WO (1) | WO2011087381A1 (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015085341A1 (en) | 2013-12-12 | 2015-06-18 | Josef Glaser | Windows or doors comprising a heat-exchanger ventilation system |
US20150337589A1 (en) * | 2011-06-20 | 2015-11-26 | Jorn Krab Holding Aps | System for covering building apertures or surface portions of buildings |
WO2016034921A1 (en) * | 2014-09-05 | 2016-03-10 | Skaala Oy | Window-fitted ventilation unit and building ventilation system |
US20160312525A1 (en) * | 2015-06-19 | 2016-10-27 | Masoud Valinejadshoubi | Solar Energy-Absorbing Window Structure and Method of Forming Thereof |
WO2017196925A1 (en) | 2016-05-10 | 2017-11-16 | Momentive Performance Materials Inc. | Thermal pyrolytic graphite tube device for directional thermal management |
CN109281590A (en) * | 2018-09-03 | 2019-01-29 | 台州智子科技有限公司 | A kind of intelligence ventilation furniture door |
TWI697611B (en) * | 2019-09-25 | 2020-07-01 | 亞細亞氣密隔音窗股份有限公司 | Window frame capable of promoting indoor and outdoor air circulation |
DE202022100213U1 (en) | 2022-01-14 | 2022-01-28 | Rüdiger Schloo | Air-to-air heat exchanger in combination with a window sash |
Families Citing this family (8)
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KR101123365B1 (en) * | 2010-08-18 | 2012-03-23 | 한국에너지기술연구원 | hot blast heater using solar energy |
DK177109B1 (en) * | 2011-03-10 | 2011-10-03 | Venetian Solar Aps | Window code unit for mounting externally on a building |
KR20150109452A (en) * | 2013-01-22 | 2015-10-01 | 바스프 에스이 | Construction element having a controllable heat-transfer coefficient u |
JP6504871B2 (en) * | 2015-03-26 | 2019-04-24 | Ykk Ap株式会社 | Bath door |
CN105134049A (en) * | 2015-09-04 | 2015-12-09 | 周国增 | Window frame with air purification function |
CA3002228A1 (en) * | 2017-04-19 | 2018-10-19 | J. Porter Whitmire | Motorized window covering having powered modules |
CN108105936A (en) * | 2017-05-28 | 2018-06-01 | 袁功峰 | The new wind turbine of ring Window frame-type |
US20220364408A1 (en) * | 2021-05-11 | 2022-11-17 | Oren Aharon | Climate adaptive glass envelope for building |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3230279A1 (en) * | 1982-08-14 | 1984-02-16 | Fulgurit Gmbh & Co Kg | Appliance for room ventilation |
DE8337249U1 (en) | 1983-12-24 | 1984-03-22 | Greschbach Industrie GmbH & Co, 7834 Herbolzheim | WINDOW |
DE3802583A1 (en) | 1988-01-29 | 1989-08-10 | Wetzel Alfred | Ventilating apparatus for windows and/or French windows for the recuperative ventilating and venting of lounges (recreation rooms) |
DE29613438U1 (en) * | 1995-08-16 | 1996-09-19 | Haeusler Peter | Ventilation device for supplying and removing air in a building |
PL60658Y1 (en) | 1998-01-16 | 2004-08-31 | Michael Scholz | Heat exchanger in particular that for use in ventilation systems |
EP1640552A1 (en) | 2004-09-15 | 2006-03-29 | Fiberline A/S | A window and a window frame |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4598768A (en) * | 1984-06-11 | 1986-07-08 | Moses Tenne | Multi-shell heat exchanger |
-
2010
- 2010-01-18 PL PL390218A patent/PL390218A1/en not_active Application Discontinuation
- 2010-04-30 RU RU2012134998/12A patent/RU2012134998A/en unknown
- 2010-04-30 AU AU2010341917A patent/AU2010341917A1/en not_active Abandoned
- 2010-04-30 US US13/522,541 patent/US20120285666A1/en not_active Abandoned
- 2010-04-30 WO PCT/PL2010/000033 patent/WO2011087381A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3230279A1 (en) * | 1982-08-14 | 1984-02-16 | Fulgurit Gmbh & Co Kg | Appliance for room ventilation |
DE8337249U1 (en) | 1983-12-24 | 1984-03-22 | Greschbach Industrie GmbH & Co, 7834 Herbolzheim | WINDOW |
DE3802583A1 (en) | 1988-01-29 | 1989-08-10 | Wetzel Alfred | Ventilating apparatus for windows and/or French windows for the recuperative ventilating and venting of lounges (recreation rooms) |
DE29613438U1 (en) * | 1995-08-16 | 1996-09-19 | Haeusler Peter | Ventilation device for supplying and removing air in a building |
PL60658Y1 (en) | 1998-01-16 | 2004-08-31 | Michael Scholz | Heat exchanger in particular that for use in ventilation systems |
EP1640552A1 (en) | 2004-09-15 | 2006-03-29 | Fiberline A/S | A window and a window frame |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150337589A1 (en) * | 2011-06-20 | 2015-11-26 | Jorn Krab Holding Aps | System for covering building apertures or surface portions of buildings |
WO2015085341A1 (en) | 2013-12-12 | 2015-06-18 | Josef Glaser | Windows or doors comprising a heat-exchanger ventilation system |
WO2016034921A1 (en) * | 2014-09-05 | 2016-03-10 | Skaala Oy | Window-fitted ventilation unit and building ventilation system |
US20160312525A1 (en) * | 2015-06-19 | 2016-10-27 | Masoud Valinejadshoubi | Solar Energy-Absorbing Window Structure and Method of Forming Thereof |
US9932768B2 (en) * | 2015-06-19 | 2018-04-03 | Masoud Valinejadshoubi | Solar energy-absorbing window structure and method of forming thereof |
WO2017196925A1 (en) | 2016-05-10 | 2017-11-16 | Momentive Performance Materials Inc. | Thermal pyrolytic graphite tube device for directional thermal management |
CN109154060A (en) * | 2016-05-10 | 2019-01-04 | 莫门蒂夫性能材料股份有限公司 | For orienting the thermal cracking graphite pipe device of thermal management |
EP3455384A4 (en) * | 2016-05-10 | 2019-11-13 | Momentive Performance Materials Inc. | Thermal pyrolytic graphite tube device for directional thermal management |
US11255613B2 (en) | 2016-05-10 | 2022-02-22 | Momentive Performance Materials Quartz, Inc. | Thermal pyrolytic graphite tube device for directional thermal management |
CN109281590A (en) * | 2018-09-03 | 2019-01-29 | 台州智子科技有限公司 | A kind of intelligence ventilation furniture door |
TWI697611B (en) * | 2019-09-25 | 2020-07-01 | 亞細亞氣密隔音窗股份有限公司 | Window frame capable of promoting indoor and outdoor air circulation |
DE202022100213U1 (en) | 2022-01-14 | 2022-01-28 | Rüdiger Schloo | Air-to-air heat exchanger in combination with a window sash |
Also Published As
Publication number | Publication date |
---|---|
AU2010341917A1 (en) | 2012-09-06 |
PL390218A1 (en) | 2011-08-01 |
RU2012134998A (en) | 2014-02-27 |
US20120285666A1 (en) | 2012-11-15 |
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