WO2004076941A1 - An air conditioning apparatus - Google Patents

An air conditioning apparatus Download PDF

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Publication number
WO2004076941A1
WO2004076941A1 PCT/AU2004/000103 AU2004000103W WO2004076941A1 WO 2004076941 A1 WO2004076941 A1 WO 2004076941A1 AU 2004000103 W AU2004000103 W AU 2004000103W WO 2004076941 A1 WO2004076941 A1 WO 2004076941A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
room
coil
path
inlet
Prior art date
Application number
PCT/AU2004/000103
Other languages
French (fr)
Inventor
John Francis Urch
Original Assignee
Air-Change Pty Limited
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 Air-Change Pty Limited filed Critical Air-Change Pty Limited
Priority to AU2004215315A priority Critical patent/AU2004215315B2/en
Publication of WO2004076941A1 publication Critical patent/WO2004076941A1/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
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/008—Indoor units, e.g. fan coil units with perfuming or deodorising 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 air conditioning apparatus.
  • an air conditioning apparatus including: a first air inlet to take air from a room; a second air inlet, the second air inlet being provided to take air from outside the room; a first air outlet to exhaust air to inside the room; a second air outlet to exhaust air to outside the room; a coil through which a refrigerant passes to cool or heat the coil, the coil being in communication with the first air outlet so that air passing through the coil is cooled or heated thereby and is delivered to the first air outlet; a heat exchanger having a first air path and a second air path, the first air path communicating with said first inlet and said second outlet so that air from the room passes therethrough, and said second air path communicates with said second air inlet and said coil so that air from outside the room is delivered to the coil, said second air path being located adjacent to first air path so that there is heat transferred between the air passing through the first and second air paths; and said coil also communicates with said first air inlet to also receive air from said room.
  • the heat exchanger is an enthalpy heat exchanger.
  • the air conditioning apparatus includes a first fan that draws air from the second air inlet and said second path and delivers the air under pressure to said coil.
  • the air conditioning apparatus further includes a second fan, the second fan drawing air from first path and delivers the air to said second outlet.
  • said first air inlet includes a first portion through which air is delivered to the coil, and a second portion through which air is delivered to said first path.
  • said first portion includes a filter.
  • an air conditioning apparatus including: a first air inlet to take air from a room; a second air inlet, the second air inlet being provided to take air from outside the room; a first air outlet to exhaust air to inside the room; a second air outlet to exhaust air to outside the room; and a heat exchanger having a first air path and a second air path, the first air path communicating with said first inlet and said second outlet so that air from the room passes therethrough, and said second air path communicates with said second air inlet and said second air outlet so that air from outside the room is delivered to inside the room, said second air path being located adjacent to first air path so that there is heat transferred between the air passing through the first and second air paths.
  • the heat exchanger is an enthalpy heat exchanger.
  • a first fan that draws air from the second air inlet and said second path and delivers the air under pressure to said coil.
  • a second fan the second fan drawing air from first path and delivers the air to said second outlet.
  • said first air inlet includes a first portion through which air is delivered to the coil, and a second portion through which air is delivered to said first path.
  • said first portion includes a filter.
  • an installation including a room, an air conditioning device having an air inlet to take air from the room, and an air outlet to deliver air to the room, a coil through which a refrigerant passes to cool or heat the coil, the coil being located between the device inlet and the device outlet so that air passing therebetween is cooled or heated by the coil, and the air conditioning apparatus described above so that air leaving said first outlet is drawn into said device inlet together with air from said room.
  • Figure 1 is a schematic plan view of an air conditioning apparatus
  • Figure 2 is a schematic side elevation of the apparatus of Figure 1
  • Figure 3 is a schematic side elevation of a modification of the air conditioning apparatus of Figures 1 and 2.
  • the apparatus 10 includes a hollow casing 11 that would be mounted in a wall 12.
  • the wall 12 would separate the interior of a room 13 with the exterior 14 of the building having the wall 12.
  • the air conditioning apparatus includes a first air inlet 15 that receives air from the room 13 and a second air inlet 16 that receives air from the exterior 14.
  • the apparatus 10 further includes a first air outlet 18 that exhausts air to the interior of the room 13, and a second air outlet 17 that exhausts air to the exterior 14.
  • the apparatus 10 includes a heat exchanger 19, which may be the heat exchanger of International Patent application PCT/AU 01/00273 (WO 01/69154).
  • the heat exchanger 19 may be a sensible heat exchanger or an enthalpy heat exchanger.
  • the heat exchanger 19 is an enthalpy heat exchanger because of moisture and temperature transfer.
  • the heat exchanger 19 provides a first air path 20 through which air is taken from the inlet 15 and delivered to the outlet 17 with the aid of a fan 21.
  • the fan 21 takes air from the path 20 and delivers it to the outlet 17.
  • the heat exchanger 19 further includes a second air path 22 that takes air from the inlet 16 and delivers it to a duct 23.
  • the duct 23 communicates with a fan 24 that delivers the air to an evaporator coil 25.
  • a refrigerant would pass through the coil 25 to cool or heat the coil and therefore cool (or dehumidify) or heat the air passing therethrough. That is, a refrigerant would be allowed to expand or condense as it passes through the coil 25 to cool or heat the coil 25. Air leaving the coil 25 is delivered to the outlet 18.
  • the inlet 15 also communicates with the duct 23 so that the fan 24 also draws air from the interior of the room 13. That is, the inlet 15 includes a first portion 26 that provides air for the air path 20, and a second portion 27 that provides air for the coil 25. The inlet air portion 27 is provided with a filter 28.
  • heat exchanger 19 is an enthalpy heat exchanger then heat and moisture transfer takes place between the two paths 20 and 22.
  • FIG 3 illustrates a modification of the apparatus 10 of Figures 1 and 2.
  • the coil 25 is not contained in the casing 11.
  • the coil 25 is located in an air conditioning device 29 mounting adjacent a ceiling 30 of the room 13.
  • the device 20 with the coil 25 located therein would receive a refrigerant that is allowed to expand or condense in the coil to cool or heat the coil 25 and the air passing therethrough.
  • the device 29 has an inlet 32 that takes air from the room 13, with the inlet delivering air to an internal duct that delivers air to the coil and ultimately an air outlet 33. Air passing between the inlet 32 and outlet 33 is heated or cooled by the internal coil of the device 29.
  • the apparatus 10 has the outlet 18 directed upwardly at the inlet 23 so that air from the room 13 is mixed from air coming from the outlet 18.
  • the inlet 33 is provided with a filter 31.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Central Air Conditioning (AREA)

Abstract

An air conditioning apparatus (10) including a heat exchanger (19) that provides a first air path (20) via which air is ducted from the exterior to the interior of a room, and a second air path (22) via which air passes from within the room to the exterior, the paths (20, 22) being located adjacent each other so as to provide for enthalpy heat exchange.

Description

AN AIR CONDITIONING APPARATUS
Technical Field
The present invention relates to air conditioning apparatus.
Background of the Invention Considerable effort is made to imn prove the efficiency of air conditioning systems due to the considerable energy they consume, particularly in the case of rooms that have a large number of occupants such as a school class room.
Despite the above mentioned efforts known air conditioning systems will still consume considerable power and therefore are costly to run. The above discussed problem is addressed by the air conditioning system described in the International Patent application PCT/AU01/00273 (WO 01/69154). Although the air conditioning system described in this International Patent application goes some way to address in the above problem, some improvements can be made.
Object of the Invention It is the object of the present invention to overcome or substantially ameliorate at least one of the above disadvantages.
Summary of the Invention
There is disclosed herein an air conditioning apparatus including: a first air inlet to take air from a room; a second air inlet, the second air inlet being provided to take air from outside the room; a first air outlet to exhaust air to inside the room; a second air outlet to exhaust air to outside the room; a coil through which a refrigerant passes to cool or heat the coil, the coil being in communication with the first air outlet so that air passing through the coil is cooled or heated thereby and is delivered to the first air outlet; a heat exchanger having a first air path and a second air path, the first air path communicating with said first inlet and said second outlet so that air from the room passes therethrough, and said second air path communicates with said second air inlet and said coil so that air from outside the room is delivered to the coil, said second air path being located adjacent to first air path so that there is heat transferred between the air passing through the first and second air paths; and said coil also communicates with said first air inlet to also receive air from said room.
Preferably, the heat exchanger is an enthalpy heat exchanger.
Preferably, the air conditioning apparatus includes a first fan that draws air from the second air inlet and said second path and delivers the air under pressure to said coil. Preferably, the air conditioning apparatus further includes a second fan, the second fan drawing air from first path and delivers the air to said second outlet.
Preferably, said first air inlet includes a first portion through which air is delivered to the coil, and a second portion through which air is delivered to said first path. Preferably, said first portion includes a filter.
There is further disclosed herein an air conditioning apparatus including: a first air inlet to take air from a room; a second air inlet, the second air inlet being provided to take air from outside the room; a first air outlet to exhaust air to inside the room; a second air outlet to exhaust air to outside the room; and a heat exchanger having a first air path and a second air path, the first air path communicating with said first inlet and said second outlet so that air from the room passes therethrough, and said second air path communicates with said second air inlet and said second air outlet so that air from outside the room is delivered to inside the room, said second air path being located adjacent to first air path so that there is heat transferred between the air passing through the first and second air paths.
Preferably, the heat exchanger is an enthalpy heat exchanger.
Preferably, a first fan that draws air from the second air inlet and said second path and delivers the air under pressure to said coil. Preferably, a second fan, the second fan drawing air from first path and delivers the air to said second outlet.
Preferably, said first air inlet includes a first portion through which air is delivered to the coil, and a second portion through which air is delivered to said first path.
Preferably, said first portion includes a filter.
There is also disclosed herein an installation including a room, an air conditioning device having an air inlet to take air from the room, and an air outlet to deliver air to the room, a coil through which a refrigerant passes to cool or heat the coil, the coil being located between the device inlet and the device outlet so that air passing therebetween is cooled or heated by the coil, and the air conditioning apparatus described above so that air leaving said first outlet is drawn into said device inlet together with air from said room.
Brief Description of the Drawings A preferred form of the present invention will now be described by way of example with reference to the accompanying drawings wherein:
Figure 1 is a schematic plan view of an air conditioning apparatus; Figure 2 is a schematic side elevation of the apparatus of Figure 1; and Figure 3 is a schematic side elevation of a modification of the air conditioning apparatus of Figures 1 and 2.
Detailed Description of the Preferred Embodiments hi Figures 1 and 2 of the accompanying drawings there is schematically depicted an air conditioning apparatus 10. The apparatus 10 includes a hollow casing 11 that would be mounted in a wall 12. The wall 12 would separate the interior of a room 13 with the exterior 14 of the building having the wall 12.
The air conditioning apparatus includes a first air inlet 15 that receives air from the room 13 and a second air inlet 16 that receives air from the exterior 14. The apparatus 10 further includes a first air outlet 18 that exhausts air to the interior of the room 13, and a second air outlet 17 that exhausts air to the exterior 14. The apparatus 10 includes a heat exchanger 19, which may be the heat exchanger of International Patent application PCT/AU 01/00273 (WO 01/69154).
However, it should be appreciated that the heat exchanger 19 may be a sensible heat exchanger or an enthalpy heat exchanger. Preferably, the heat exchanger 19 is an enthalpy heat exchanger because of moisture and temperature transfer.
The heat exchanger 19 provides a first air path 20 through which air is taken from the inlet 15 and delivered to the outlet 17 with the aid of a fan 21. The fan 21 takes air from the path 20 and delivers it to the outlet 17. The heat exchanger 19 further includes a second air path 22 that takes air from the inlet 16 and delivers it to a duct 23. The duct 23 communicates with a fan 24 that delivers the air to an evaporator coil 25. A refrigerant would pass through the coil 25 to cool or heat the coil and therefore cool (or dehumidify) or heat the air passing therethrough. That is, a refrigerant would be allowed to expand or condense as it passes through the coil 25 to cool or heat the coil 25. Air leaving the coil 25 is delivered to the outlet 18. The inlet 15 also communicates with the duct 23 so that the fan 24 also draws air from the interior of the room 13. That is, the inlet 15 includes a first portion 26 that provides air for the air path 20, and a second portion 27 that provides air for the coil 25. The inlet air portion 27 is provided with a filter 28.
If the heat exchanger 19 is an enthalpy heat exchanger then heat and moisture transfer takes place between the two paths 20 and 22.
Figure 3 illustrates a modification of the apparatus 10 of Figures 1 and 2. In this embodiment, the coil 25 is not contained in the casing 11. The coil 25 is located in an air conditioning device 29 mounting adjacent a ceiling 30 of the room 13. The device 20 with the coil 25 located therein would receive a refrigerant that is allowed to expand or condense in the coil to cool or heat the coil 25 and the air passing therethrough. More particularly the device 29 has an inlet 32 that takes air from the room 13, with the inlet delivering air to an internal duct that delivers air to the coil and ultimately an air outlet 33. Air passing between the inlet 32 and outlet 33 is heated or cooled by the internal coil of the device 29. In the embodiment of Figure 3, the apparatus 10 has the outlet 18 directed upwardly at the inlet 23 so that air from the room 13 is mixed from air coming from the outlet 18.
Preferably, the inlet 33 is provided with a filter 31.

Claims

C AIMS:
1. An air conditioning apparatus including: a first air inlet to take air from a room; a second air inlet, the second air inlet being provided to take air from outside the room; a first air outlet to exhaust air to inside the room; a second air outlet to exhaust air to outside the room; a coil through which a refrigerant passes to cool or heat the coil, the coil being in communication with the first air outlet so that air passing through the coil is cooled or heated thereby and is delivered to the first air outlet; a heat exchanger having a first air path and a second air path, the first air path communicating with said first inlet and said second outlet so that air from the room passes therethrough, and said second air path communicates with said second air inlet and said coil so that air from outside the room is delivered to the coil, said second air path being located adjacent to first air path so that there is heat transferred between the air passing through the first and second air paths; and said coil also communicates with said first air inlet to also receive air from said room.
2. The air conditioning apparatus of claim 1, wherein the heat exchanger is an enthalpy heat exchanger.
3. The air conditioning apparatus of claim 1 or 2 further including a first fan that draws air from the second air inlet and said second path and delivers the air under pressure to said coil.
4. The air conditioning apparatus of claim 1, 2 or 3 further including a second fan, the second fan drawing air from first path and delivers the air to said second outlet.
5. The air conditioning apparatus of any one of claims 1 to 4, wherein said first air inlet includes a first portion through which air is delivered to the coil, and a second portion through which air is delivered to said first path.
6. The air conditioning apparatus of claim 5, wherein said first portion includes a filter.
7. An air conditioning apparatus including: a first air inlet to take air from a room; a second air inlet, the second air inlet being provided to take air from outside the room; a first air outlet to exhaust air to inside the room; a second air outlet to exhaust air to outside the room; and a heat exchanger having a first air path and a second air path, the first air path communicating with said first inlet and said second outlet so that air from the room passes therethrough, and said second air path communicates with said second air inlet and said second air outlet so that air from outside the room is delivered to inside the room, said second air path being located adjacent to first air path so that there is heat transferred between the air passing through the first and second air paths.
8. The air conditioning apparatus of claim 1, wherein the heat exchanger is an enthalpy heat exchanger.
9. The air conditioning apparatus of claim 7 or 8 further including a first fan that draws air from the second air inlet and said second path and delivers the air under pressure to said coil.
10. The air conditioning apparatus of claim 7, 8 or 9 further including a second fan, the second fan drawing air from first path and delivers the air to said second outlet.
11. The air conditioning apparatus of any one of claims 7 to 10, wherein said first air inlet includes a first portion through which air is delivered to the coil, and a second portion through which air is delivered to said first path.
12. The air conditioning apparatus of claim 11, wherein said first poήion includes a filter.
13. An installation including a room, an air conditioning device having an air inlet to take air from the room, and an air outlet to deliver air to the room, a coil through which a refrigerant passes to cool or heat the coil, the coil being located between the device inlet and the device outlet so that air passing therebetween is cooled or heated by the coil, and the air conditioning apparatus of any one of claims 7 to!2 so that air leaving said first outlet is drawn into said device inlet together with air from said room.
14. An air conditioning apparatus substantially as hereinbefore described with reference to Figures 1 and 2.
15. An air conditioning installation substantially as hereinbefore described with reference to Figure 3.
PCT/AU2004/000103 2003-02-25 2004-01-29 An air conditioning apparatus WO2004076941A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2004215315A AU2004215315B2 (en) 2003-02-25 2004-01-29 An air conditioning apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2003900835A AU2003900835A0 (en) 2003-02-25 2003-02-25 An air conditioning apparatus
AU2003900835 2003-02-25

Publications (1)

Publication Number Publication Date
WO2004076941A1 true WO2004076941A1 (en) 2004-09-10

Family

ID=31499882

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2004/000103 WO2004076941A1 (en) 2003-02-25 2004-01-29 An air conditioning apparatus

Country Status (2)

Country Link
AU (1) AU2003900835A0 (en)
WO (1) WO2004076941A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006010205A1 (en) * 2004-07-27 2006-02-02 Air Change Pty Ltd A heat exchanger
AU2005266840B2 (en) * 2004-07-27 2010-06-17 Air Change Pty Ltd A heat exchanger
EP3779287A4 (en) * 2018-03-30 2021-05-26 Gree Electric Appliances, Inc. of Zhuhai Air-conditioning indoor unit and air conditioner having same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4799539A (en) * 1985-03-12 1989-01-24 Advanced Design & Manufacture Limited Thermally efficient room ventilator
US4910971A (en) * 1988-02-05 1990-03-27 Hydro Thermal Engineering Pty. Ltd. Indirect air conditioning system
EP1001228A2 (en) * 1998-11-09 2000-05-17 Building Performance Equipment Inc. Ventilator system and method
WO2001042719A1 (en) * 1999-12-09 2001-06-14 Njaa Ove T Arrangement by air-conditioning plant with heat recovery

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4799539A (en) * 1985-03-12 1989-01-24 Advanced Design & Manufacture Limited Thermally efficient room ventilator
US4910971A (en) * 1988-02-05 1990-03-27 Hydro Thermal Engineering Pty. Ltd. Indirect air conditioning system
EP1001228A2 (en) * 1998-11-09 2000-05-17 Building Performance Equipment Inc. Ventilator system and method
WO2001042719A1 (en) * 1999-12-09 2001-06-14 Njaa Ove T Arrangement by air-conditioning plant with heat recovery

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006010205A1 (en) * 2004-07-27 2006-02-02 Air Change Pty Ltd A heat exchanger
AU2005266840B2 (en) * 2004-07-27 2010-06-17 Air Change Pty Ltd A heat exchanger
EP3779287A4 (en) * 2018-03-30 2021-05-26 Gree Electric Appliances, Inc. of Zhuhai Air-conditioning indoor unit and air conditioner having same

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