WO1997003324A1 - Air ventilation system with rotating heat/energy recovery core - Google Patents

Air ventilation system with rotating heat/energy recovery core Download PDF

Info

Publication number
WO1997003324A1
WO1997003324A1 PCT/CA1996/000465 CA9600465W WO9703324A1 WO 1997003324 A1 WO1997003324 A1 WO 1997003324A1 CA 9600465 W CA9600465 W CA 9600465W WO 9703324 A1 WO9703324 A1 WO 9703324A1
Authority
WO
WIPO (PCT)
Prior art keywords
passageways
core
assembly
housing
heat exchanger
Prior art date
Application number
PCT/CA1996/000465
Other languages
French (fr)
Inventor
Marcel Riendeau
Original Assignee
Marcel Riendeau
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 Marcel Riendeau filed Critical Marcel Riendeau
Priority to AU62966/96A priority Critical patent/AU6296696A/en
Publication of WO1997003324A1 publication Critical patent/WO1997003324A1/en

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/006—Preventing deposits of ice
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • 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
    • F24F2203/1044—Rotary wheel performing other movements, e.g. sliding
    • 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
    • F24F2203/1068—Rotary wheel comprising one rotor
    • 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
    • F24F2203/1084—Rotary wheel comprising two flow rotor segments
    • 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
    • F24F2203/1096—Rotary wheel comprising sealing means
    • 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 present invention relates to an improvement in the air ventilation systems installed in residential, commercial or industrial buildings.
  • the first one consists of a rotary wheel made of a porous material, which is mounted transversely across the incoming and outcoming air streams so as to collect the heat and moisture from one of the steams and to transfer them to the other scream while the wheel is rotating (see, for example, U.S. patent Nos. 4,473,108 and 5,183,098).
  • the other kind of heat exchanger used in ventilation systems consists of a rigid core which is made of a heat conductive material and has crossed air passageways sealed from one another. An example of such a core that is usually cubic in shape, is shown in Figures 1 and 2 of the attached drawings, which are identified as "prior art". Reference can also be made to U.S. patent No. 5,036,907.
  • the exhaust air that may come from a furnace (as shown in Figure 1 ) or from the inside of the building passes through one set of passageways whereas the fresh air coming from the outside passes through the other set of passageways that extend in a plane parallel but a direction perpendicular to those of the first set.
  • Heat exchanger cores are efficient. However, they are subject to frosting, because the moisture in the hot air stream freezes when it comes into contact with the walls of the core that are cooled by the cold air stream. Accordingly., it is compulsory to stop the ventilation system at regular intervals or to invert the streams passing through the passageways via a set of valves located inside or outside the core so as to let the frozen moisture thaw.
  • U.S. patent Nos. 5,024,263; 5,193,610 and 5,257,736 are subject to frosting, because the moisture in the hot air stream freezes when it comes into contact with the walls of the core that are cooled by the cold air stream. Accordingly., it is compulsory to stop the ventilation system at regular intervals or to invert the streams passing through the passageways via a set of valves located inside or outside the core so as to let the frozen moisture thaw.
  • the object of the present invention is to provide a heat exchanger core assembly of very simple yet efficient structure, which solves the above mentioned problem of frosting encountered with the conventional heat exchanger cores, also called "heat/energy recovery cores".
  • the invention provides a heat exchanger core assembly for use in a ventilation system to extract heat and/or moisture contained in an air stream and transfer the so extracted heat and/or moisture to another air stream.
  • This assembly comprises a core which is made of a heat conductive material and has crossed passageways which are sealed from one another and through which the air streams flow separately.
  • the assembly also comprises a housing in which the core is mounted. The housing includes a first set of inlet and outlet operatively associated to one of the passageways and a second set of inlet and outlet operatively associated to the other one of the passageways.
  • this assembly is characterized in that it further comprises rotating means for rotating the core within the housing in such a manner as to invert the respective positions of the passageways with respect to the first and second sets of inlet and outlet and thus to allow each air stream to pass successively through both of the passageways according to a predetermined cycle.
  • the invention basically consists in mounting a core of conventional structure within a supporting housing in such a manner that it may be rotated within the housing to invert the respective positions of its crossed passageways with respect to the hot and cold air inlets and outlets made in the housing. As a result, it becomes unnecessary to stop the ventilation system at regular intervals to let the frozen moisture thaw, or to use a set of valves to invert the flows through the passageways of the core.
  • Figure 1 is a schematic view of an air-ventilation system incorporating a heat exchanger core of conventional structure.
  • Figure 2 is a schematic perspective view of the heat-exchanger core of the system shown in Figure 1 ;
  • Figure 3 is a perspective view of a rotary core according to the invention.
  • Figure 4 is a side elevation, cross-sectional view of a heat- exchanger incorporating the rotary core shown in Figure 3;
  • Figure 5 is a partial view of the corner of the heat exchanger shown in Figure 4, illustrating the sealing used within the same.
  • the present invention makes use of a heat-exchanger core (1 ) of conventional structure which is made of a heat conductive material, such as stainless steel.
  • This core (1 ) has two sets of separate passageways (9,9')' which extend at 90° with respect to each other and through which two separate air streams shown with black and white arrows, may flow.
  • This core (1 ) is mounted within a housing (5).
  • the housing (5) includes a first set of inlet (13) and outlet (13') operatively associated to one of the passageways of the core.
  • the housing also incudes a second set of inlet
  • the invention lies in that means are provided for rotating the core (1 ) within the housing (5) in such a manner as to invert the respective positions of the passageways (9,9') with respect to the first and second sets of inlet and outlet and thus to allow each air stream to pass successively through both passageways according to a predetermined cycle.
  • these rotating means preferably include a pair of supporting disk (3, 3') mounted onto the core so as to form therewith a drum having a rotational axis "A".
  • This drum is rotatably mounted in the housing (5) and operatively connected to actuation means which preferably consists of a solenoid (7) connected to a lever (8) projecting radially from a shaft (6) coaxial to the disc (3) so as to be rotated incrementally to invert the respective position of the passageways (9,9') with respect to the first and second sets of inlet and outlet.
  • actuation means which preferably consists of a solenoid (7) connected to a lever (8) projecting radially from a shaft (6) coaxial to the disc (3) so as to be rotated incrementally to invert the respective position of the passageways (9,9') with respect to the first and second sets of inlet and outlet.
  • actuation means which preferably consists of a solenoid (7) connected to a lever (8) projecting radially from a
  • rotation of the core at a suitable angle allows for the first and second sets of passageways (9,9') to be "inverted" and thus for the paths in which cold air and warm air travel, to alternate according to a predetermined cycle.
  • Alternate rotation of the core makes maximum use of the extreme opposite temperatures of the crossing air flow.
  • the duration of the cycle can take into consideration such parameters as outdoor temperature, indoor temperature, relative humidity and/or indoor air quality, as monitored by appropriate sensors (not shown).
  • the core (1 ) used in accordance with the invention can extend vertically or horizontally since drainage is no longer required. Because of the uninterrupted air flow providing constant health/energy recovery, the total efficiency of the ventilation system is significantly increased while not affecting barometric pressure. As is better shown in Figure 5, sealing of the rotating core (1 ) within the housing (5) can be achieved with rubber seals (1 1 ,1 1 ') in the form of wipers mounted on the periphery of the disks (3,3') and along the edges of the core 1 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A heat exchanger core assembly is disclosed, for use in a ventilation system to extract heat and/or moisture contained in an air stream and transfer the so extracted heat and/or moisture to another air stream. This assembly comprises a core which is made of a heat conductive material and has crossed passageways (9, 9') which are sealed from one another and through which the air streams flow separately. The assembly also comprises a housing (5) in which the core is mounted. The housing (5) includes a first set of inlet and outlet (13, 13') operatively associated to one of the passageways (9, 9') and a second set of inlet and outlet (14, 14') operatively associated to the other one of the passageways (9, 9'). Means (3, 3', 8) are provided for rotating the core within the housing (5) in such a manner as to invert the respective positions of the passageways (9, 9') with respect to the first and second sets of inlet and outlet (13, 13', 14, 14') and thus to allow each air stream to pass successively through both of the passageways (9, 9') according to a predetermined cycle. This assembly is very simple yet efficient and solves the problem of frosting encountered with the conventional heat energy recovery cores.

Description

AIR VENTILATION SYSTEM WITH ROTATING HEAT/ENERGY RECOVERY CORE
BACKGROUND OF THE INVENTION
a) Field of the invention
The present invention relates to an improvement in the air ventilation systems installed in residential, commercial or industrial buildings.
b) Brief description of the prior art
It is of common practice to use heat exchangers in ventilation systems installed in residential, commercial or industrial buildings, in order to extract the heat and/or moisture contained in the air stream leaving the buildings and transfer this heat and/or moisture to the air stream entering the buildings in winter, and to do the same thing but in the reverser way in summer.
There are presently two different kinds of heat exchangers used in ventilation systems. The first one consists of a rotary wheel made of a porous material, which is mounted transversely across the incoming and outcoming air streams so as to collect the heat and moisture from one of the steams and to transfer them to the other scream while the wheel is rotating (see, for example, U.S. patent Nos. 4,473,108 and 5,183,098). The other kind of heat exchanger used in ventilation systems consists of a rigid core which is made of a heat conductive material and has crossed air passageways sealed from one another. An example of such a core that is usually cubic in shape, is shown in Figures 1 and 2 of the attached drawings, which are identified as "prior art". Reference can also be made to U.S. patent No. 5,036,907.
In use, the exhaust air that may come from a furnace (as shown in Figure 1 ) or from the inside of the building passes through one set of passageways whereas the fresh air coming from the outside passes through the other set of passageways that extend in a plane parallel but a direction perpendicular to those of the first set.
Heat exchanger cores are efficient. However, they are subject to frosting, because the moisture in the hot air stream freezes when it comes into contact with the walls of the core that are cooled by the cold air stream. Accordingly., it is compulsory to stop the ventilation system at regular intervals or to invert the streams passing through the passageways via a set of valves located inside or outside the core so as to let the frozen moisture thaw. In this connection, reference can be made to U.S. patent Nos. 5,024,263; 5,193,610 and 5,257,736.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a heat exchanger core assembly of very simple yet efficient structure, which solves the above mentioned problem of frosting encountered with the conventional heat exchanger cores, also called "heat/energy recovery cores".
More particularly, the invention provides a heat exchanger core assembly for use in a ventilation system to extract heat and/or moisture contained in an air stream and transfer the so extracted heat and/or moisture to another air stream. This assembly comprises a core which is made of a heat conductive material and has crossed passageways which are sealed from one another and through which the air streams flow separately. The assembly also comprises a housing in which the core is mounted. The housing includes a first set of inlet and outlet operatively associated to one of the passageways and a second set of inlet and outlet operatively associated to the other one of the passageways.
In accordance with the invention, this assembly is characterized in that it further comprises rotating means for rotating the core within the housing in such a manner as to invert the respective positions of the passageways with respect to the first and second sets of inlet and outlet and thus to allow each air stream to pass successively through both of the passageways according to a predetermined cycle. Thus, as can be understood, the invention basically consists in mounting a core of conventional structure within a supporting housing in such a manner that it may be rotated within the housing to invert the respective positions of its crossed passageways with respect to the hot and cold air inlets and outlets made in the housing. As a result, it becomes unnecessary to stop the ventilation system at regular intervals to let the frozen moisture thaw, or to use a set of valves to invert the flows through the passageways of the core.
The invention will be better understood upon reading the following detailed description of the invention given with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE INVENTION
Figure 1 is a schematic view of an air-ventilation system incorporating a heat exchanger core of conventional structure.
Figure 2 is a schematic perspective view of the heat-exchanger core of the system shown in Figure 1 ;
Figure 3 is a perspective view of a rotary core according to the invention;
Figure 4 is a side elevation, cross-sectional view of a heat- exchanger incorporating the rotary core shown in Figure 3; and
Figure 5 is a partial view of the corner of the heat exchanger shown in Figure 4, illustrating the sealing used within the same.
DETAILED DESCRIPTION OF THE INVENTION
As shown in Figures 3 to 5, the present invention makes use of a heat-exchanger core (1 ) of conventional structure which is made of a heat conductive material, such as stainless steel. This core (1 ) has two sets of separate passageways (9,9')' which extend at 90° with respect to each other and through which two separate air streams shown with black and white arrows, may flow. This core (1 ) is mounted within a housing (5). The housing (5) includes a first set of inlet (13) and outlet (13') operatively associated to one of the passageways of the core. The housing also incudes a second set of inlet
(14) and outlet (14') operatively associated to the other passageway, as is shown in Figure 4.
As aforesaid, the invention lies in that means are provided for rotating the core (1 ) within the housing (5) in such a manner as to invert the respective positions of the passageways (9,9') with respect to the first and second sets of inlet and outlet and thus to allow each air stream to pass successively through both passageways according to a predetermined cycle.
As is better shown in Figure 3, these rotating means preferably include a pair of supporting disk (3, 3') mounted onto the core so as to form therewith a drum having a rotational axis "A". This drum is rotatably mounted in the housing (5) and operatively connected to actuation means which preferably consists of a solenoid (7) connected to a lever (8) projecting radially from a shaft (6) coaxial to the disc (3) so as to be rotated incrementally to invert the respective position of the passageways (9,9') with respect to the first and second sets of inlet and outlet. In the illustrated embodiment, such a rotation is made at an angle of 90° back and forth. Altematively, use could be made of a small rotary motor connected to the shaft (9) so as to rotate the core continuously in one direction.
As can be understood, in both cases, rotation of the core at a suitable angle allows for the first and second sets of passageways (9,9') to be "inverted" and thus for the paths in which cold air and warm air travel, to alternate according to a predetermined cycle.
Alternate rotation of the core makes maximum use of the extreme opposite temperatures of the crossing air flow. The duration of the cycle can take into consideration such parameters as outdoor temperature, indoor temperature, relative humidity and/or indoor air quality, as monitored by appropriate sensors (not shown).
As a result, inverted air flows in the core prevent frosting from occurring.
As can also be understood, the core (1 ) used in accordance with the invention can extend vertically or horizontally since drainage is no longer required. Because of the uninterrupted air flow providing constant health/energy recovery, the total efficiency of the ventilation system is significantly increased while not affecting barometric pressure. As is better shown in Figure 5, sealing of the rotating core (1 ) within the housing (5) can be achieved with rubber seals (1 1 ,1 1 ') in the form of wipers mounted on the periphery of the disks (3,3') and along the edges of the core 1 .
Of course, numerous modifications could be made to the invention as it was broadly disclosed hereinabove without departing from the scope of the appended claims.

Claims

1 . A heat exchanger core assembly for use in a ventilation system to extract heat and/or moisture contained in an air stream and transfer the so extracted heat and/or moisture to another air stream, said assembly comprising a core (1 ) made of a heat conductive material, said core having crossed passageways (9,9') which are sealed from one another and through which said air streams flow separately, said assembly also comprising a housing (5) in which said core is mounted, said housing including a first set of inlet and outlet (13,13') operatively associated to one of said passageways and a second set of inlet and outlet (14,14') operatively associated to the other one of said passageways, said assembly being characterized in that it further comprises rotating means (3, 3', 8, 9) for rotating the core (1 ) within the housing (5) in such a manner as to invert the respective positions of the passageways (9,9') with respect to the first and second sets of inlet and outlet and thus to allow each air stream to pass successively through both of said passageways according to a predetermined cycle.
2. The heat exchanger core assembly of claim 1 , wherein said rotating means comprises: a set of supporting disks (3,3') mounted onto the core (1 ) so as to form therewith a drum having a rotational axis (A), which is rotatably mounted about its axis within the housing (5); and actuation means (6,8,9) connected to the drum for rotating it about its axis (A) so as to invert the position of its passageways (9,9') with respect to the first and second sets of inlet and outlet.
3. The heat exchanger core assembly of claim 2, wherein the actuation means comprises a lever (8) projecting radially from a shaft (6) coaxial to one (3) of the disks, and a solenoid (7) operatively connected to the lever (8) so as to rotate the drum incrementally at a same angle back and forth.
4. The heat exchanger core assembly of claim 3, wherein the rotation angle is equal to about 90° .
5. The heat exchanger core assembly of claim 2, wherein the actuation means comprises a rotary motor connected to a shaft (6) coaxial to one (3) of the disks.
6. The heat exchanger core assembly of any one of claims 1 to 5, wherein the core (1 ) is provided with rubber seals (1 1 ,1 V) bearing against inner surfaces of the housing (5) in order to seal the passageways (9,9') within said housing (5).
7. The heat exchanger core assembly of any one of claims 1 to 6, wherein said assembly further comprises: control means (1 5) operatively connected to said rotating means so as to operate the same as a function of at least one of the following parameters: outdoor temperature, indoor temperature, relative humidity and indoor air quality.
PCT/CA1996/000465 1995-07-13 1996-07-12 Air ventilation system with rotating heat/energy recovery core WO1997003324A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU62966/96A AU6296696A (en) 1995-07-13 1996-07-12 Air ventilation system with rotating heat/energy recovery core

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US110895P 1995-07-13 1995-07-13
US60/001,108 1995-07-13

Publications (1)

Publication Number Publication Date
WO1997003324A1 true WO1997003324A1 (en) 1997-01-30

Family

ID=21694409

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1996/000465 WO1997003324A1 (en) 1995-07-13 1996-07-12 Air ventilation system with rotating heat/energy recovery core

Country Status (2)

Country Link
AU (1) AU6296696A (en)
WO (1) WO1997003324A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110146941A1 (en) * 2008-07-01 2011-06-23 Carrier Corporation Energy Recovery Ventilator
CN103712321A (en) * 2013-12-03 2014-04-09 无锡罗特新风技术有限公司 Process for machining turning wheel heat recycling devices
CN103868223A (en) * 2014-03-29 2014-06-18 宁波东大空调设备有限公司 Hexagonal prism reversed heat transmission machine core and heat recovery new wind machine thereof
US10012450B2 (en) 2012-01-20 2018-07-03 Westwind Limited Heat exchanger element and method for the production
EP3418642A4 (en) * 2016-02-19 2018-12-26 Mitsubishi Electric Corporation Heat exchanger ventilation device, heat exchanger mounting method, and heat exchanger removal method
US10415900B2 (en) 2013-07-19 2019-09-17 Westwind Limited Heat / enthalpy exchanger element and method for the production
CN111947294A (en) * 2020-07-10 2020-11-17 珠海格力电器股份有限公司 Heating sterilization protective cover for total heat exchange core and total heat exchange structure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652528A1 (en) * 1975-11-18 1977-05-26 Munters Ab Carl METHOD AND DEVICE FOR DEFROSTING OR DE-IRONING OF HEAT EXCHANGERS
CH606965A5 (en) * 1977-05-03 1978-11-30 Massimo Talleri Rotary regenerative heat exchanger mounted inside double duct
US5257736A (en) * 1992-08-06 1993-11-02 Donald Roy Self-regulating air ventilation apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2652528A1 (en) * 1975-11-18 1977-05-26 Munters Ab Carl METHOD AND DEVICE FOR DEFROSTING OR DE-IRONING OF HEAT EXCHANGERS
CH606965A5 (en) * 1977-05-03 1978-11-30 Massimo Talleri Rotary regenerative heat exchanger mounted inside double duct
US5257736A (en) * 1992-08-06 1993-11-02 Donald Roy Self-regulating air ventilation apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110146941A1 (en) * 2008-07-01 2011-06-23 Carrier Corporation Energy Recovery Ventilator
US9062890B2 (en) * 2008-07-01 2015-06-23 Carrier Corporation Energy recovery ventilator
US10012450B2 (en) 2012-01-20 2018-07-03 Westwind Limited Heat exchanger element and method for the production
US10415900B2 (en) 2013-07-19 2019-09-17 Westwind Limited Heat / enthalpy exchanger element and method for the production
CN103712321A (en) * 2013-12-03 2014-04-09 无锡罗特新风技术有限公司 Process for machining turning wheel heat recycling devices
CN103712321B (en) * 2013-12-03 2016-05-25 无锡罗特新风技术有限公司 A kind of processing technology of runner heat reclamation device
CN103868223A (en) * 2014-03-29 2014-06-18 宁波东大空调设备有限公司 Hexagonal prism reversed heat transmission machine core and heat recovery new wind machine thereof
CN103868223B (en) * 2014-03-29 2016-03-30 宁波东大空调设备有限公司 The reverse heat transfer movement of six prismatics and new blower for heat recycling thereof
EP3418642A4 (en) * 2016-02-19 2018-12-26 Mitsubishi Electric Corporation Heat exchanger ventilation device, heat exchanger mounting method, and heat exchanger removal method
CN111947294A (en) * 2020-07-10 2020-11-17 珠海格力电器股份有限公司 Heating sterilization protective cover for total heat exchange core and total heat exchange structure
CN111947294B (en) * 2020-07-10 2021-10-22 珠海格力电器股份有限公司 Heating sterilization protective cover for total heat exchange core and total heat exchange structure

Also Published As

Publication number Publication date
AU6296696A (en) 1997-02-10

Similar Documents

Publication Publication Date Title
US7231967B2 (en) Ventilator system and method
FI81193C (en) VENTILATIONSAPPARAT MED VAERMEAOTERVINNING.
KR101746154B1 (en) Air conditioning system
US4497361A (en) Regenerative heat and humidity exchanging apparatus
US20080003940A1 (en) Ventilator system and method
US6083300A (en) Dual mode air treatment apparatus and method
WO2005103576A2 (en) Heat and energy recovery ventilators and methods of use
CA2041768A1 (en) Air ventilation and heat exchange apparatus
FI62417C (en) SAETT FOER AVFROSTNING AV EN I EN VENTILATIONSANLAEGGNINGS FRAONLUFTSKANAL ANORDNAD VAERMEVAEXLARE FOER VAERMEAOTERVINNING
JPH04283333A (en) Heat exchanging ventilating device
US4244422A (en) Method and device for defrosting heat exchanger without impairment of its heat exchange efficiency
US6062296A (en) Regenerative heat recovery unit comprising heat accumulators tiltably movable to have a valve function
WO1997003324A1 (en) Air ventilation system with rotating heat/energy recovery core
US6257317B1 (en) Integrated heat recovery ventilator-hepa filter
CA2505233C (en) Variable volumetric flow heat exchanger for an air-to-air heat recovery system
JP3980215B2 (en) Heat exchange ventilator
JPH06101930A (en) Air cooler using moisture absorbent
WO2001069140A1 (en) Heat exchanger having high moisture transfer capability in high relative humidity air
Shurcliff Air-to-air heat-exchangers for houses
US4509411A (en) Fluid handling device
EP4375606A1 (en) Self-defrosting heat exchanger and method of using same
CA2244064C (en) Regenerative heat recovery unit comprising heat accumulators tiltably movable to have a valve function
CA2428409A1 (en) Ventilator system and method
JP3049878U (en) Air conditioner and damper device
CA1140914A (en) Heat exchanger in plants for ventilating rooms or buildings

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA