EP1344989B1 - Appareil de conditionnement d'air - Google Patents

Appareil de conditionnement d'air Download PDF

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Publication number
EP1344989B1
EP1344989B1 EP02251748A EP02251748A EP1344989B1 EP 1344989 B1 EP1344989 B1 EP 1344989B1 EP 02251748 A EP02251748 A EP 02251748A EP 02251748 A EP02251748 A EP 02251748A EP 1344989 B1 EP1344989 B1 EP 1344989B1
Authority
EP
European Patent Office
Prior art keywords
heating unit
unit
air flow
cooling
air
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.)
Expired - Lifetime
Application number
EP02251748A
Other languages
German (de)
English (en)
Other versions
EP1344989A1 (fr
Inventor
Eric Carrier SA Pitisci
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carrier Corp
Original Assignee
Carrier Corp
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 Carrier Corp filed Critical Carrier Corp
Priority to ES02251748T priority Critical patent/ES2325149T3/es
Priority to AT02251748T priority patent/ATE431528T1/de
Priority to EP02251748A priority patent/EP1344989B1/fr
Priority to DE60232301T priority patent/DE60232301D1/de
Publication of EP1344989A1 publication Critical patent/EP1344989A1/fr
Application granted granted Critical
Publication of EP1344989B1 publication Critical patent/EP1344989B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • 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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers

Definitions

  • the present invention relates to air conditioning apparatus and more particularly to air conditioning apparatus in which air may be heated or cooled depending on operational requirements.
  • the cooling unit is constituted by a cooling coil which is connected to a source of refrigerant.
  • the heater typically, may be an electric heater.
  • the cooling unit or the heating unit may be operated as appropriate to give the desired air conditions.
  • an air conditioning apparatus as claimed in claim 1.
  • the apparatus comprises a cooling unit, a heating unit and a fan for directing air through the heating and cooling units wherein the heating unit is movable between first and second positions, the heating unit presenting a lower resistance to air flow through the apparatus in its second position.
  • the heating unit is moveable to a position in which it provides a lower resistance to a flow of air through the apparatus.
  • the heating unit can be moved to the second position so that the pressure drop across the heater is reduced or eliminated. This means that the cooling capacity of the cooling unit is improved, or a smaller fan unit can be used for a given cooling requirement, leading to energy savings.
  • the heating unit may be withdrawn to a position outside an air flow passage, so as completely to eliminate its resistance to air flow.
  • this arrangement may lead to additional space requirements. Accordingly, the heating unit is moveable between respective positions within the air flow passage.
  • the heating unit may be moved to lie flush with a wall of the air flow passage.
  • the heating unit is moveable to a position within the air flow passage in which it presents less resistance to the air flow.
  • the heating unit may be mounted for translational, for example linear, movement in an arrangement that is not in accordance with the present invention.
  • the heating unit is mounted for pivotal or rotary movement. Therefore the heating unit may has an axis of rotation extending, for example horizontally, through the air flow passage whereby in one position it may extend substantially across the air flow passage and in the other position it extends generally along the air flow passage, thereby providing less resistance to air flow.
  • the movement of the heater may be effected by any suitable actuator, preferably a linear actuator coupled to the heater unit by a suitably rotary coupling, for example a rack and pinion coupling.
  • the actuator is a thermoactuator.
  • such actuators comprise a PTC heater which, when energised, heats a wax motor. The wax then expands so as to impart a movement to an actuator member.
  • the heating unit is an electric heating unit.
  • the heating unit may typically comprise a heating element supported in a frame, and the frame is mounted for movement in the air flow passage.
  • the heating unit may be positioned upstream of the cooling unit, but preferably it is positioned downstream of the cooling unit.
  • the cooling unit and fan may be of a conventional design.
  • the cooling unit may comprise a cooling coil supplied with refrigerant through which the air flows.
  • the fan may be of any suitable construction, for example an axial flow fan. Preferably, however, it is a centrifugal fan.
  • the fan may be positioned in any convenient location, for example upstream of the cooling unit. Preferably, however, it is located between the cooling unit and the heating unit.
  • an air conditioning unit 2 comprises a housing 4, having an air inlet 6 and an air outlet 8.
  • An airflow passage 10 extends through the housing 4 from the air inlet 6 to the air outlet 8. The airflow is represented schematically by arrows in the passage 10.
  • an air filter 12 Arranged within the airflow passage 10 in a serial flow manner are an air filter 12, a cooling unit 14, a centrifugal fan 16 and a heating unit 18.
  • the cooling unit 14 is of a type conventional in the art, comprising a plurality of pipes connected to a source of refrigerant (not shown). As air is drawn through the cooling unit 14 by the fan 16 heat is transferred from the air to the refrigerant in the cooling unit 14, thereby cooling the air.
  • the cooled air then passes through the centrifugal fan 16 which exhausts the air through the heater 18.
  • the heater 18 is an electric heater. As can be seen most clearly from Figure 3 , the heater 18 is generally rectangular and comprises a plurality of heating elements 22 over which air is passed. The heater 18 is supported in a frame 20. Power is supplied to the elements 22 via electrical connectors 24 mounted on one side of the frame 20. Power is supplied to the connectors through wires 26.
  • the frame 20 is pivotally mounted to a section 28 of the wall of the airflow passage 10.
  • the wall section 28 may be removably mounted in the apparatus for ease of assembly.
  • One end 30 of the frame is provided with an integrally formed L-shaped bracket 32 whose end is provided with an aperture 34.
  • a further bracket 36 is upstanding from the passage wall section 28.
  • the upper end of the bracket 36 mounts a journal 38 which extends through the opening 34 in the housing bracket 32 so as pivotally to support one end of the frame.
  • the power supply wires 26 pass through the journal 38 and then through a grommet 40 mounted in the wall section 28 for connection to a control for the apparatus, not shown.
  • a second integrally formed L-shaped bracket 42 is provided at the other end 44 of the heater frame 20.
  • the distal end 46 of the bracket 42 is provided with two-spaced apart openings which receive respective pins 48 of a rotary coupling 50 of an actuator 52.
  • the axes of rotation of the coupling 50 and the journal 38 are coincident, to define an axis of rotation 54 for the heater unit 18.
  • the actuator 52 in this embodiment is a thermoactuator. It is of the type comprising a PTC heater which, when energised heats a wax motor. This substance expands, pushing out a rod 56 which is coupled to a rack and pinion rotary coupling 50. Actuators of this type are supplied by ELTEK SpA of Casale Monf., Italy under the product code 10.0331xx. In this way, linear motion of the rod 56 causes the pins 48 of the coupling 50 to rotate about axis 54, thereby rotating the heater unit 18.
  • the actuator 52 and coupling 50 are supported on an angle bracket 58 which is mounted to the wall section 28.
  • Wires 60 for the actuator extend through a grommet 62 in the wall section 28 for connection to the apparatus control.
  • the top 64 of the frame 20 is provided with a yet further integrally formed mounting bracket 66.
  • a thermal cut out 68 such as a bimetallic disc type cut out, is mounted on this bracket 66 so as to interrupt the power supply to the heating elements 22 in the event of the unit overheating.
  • the heater 18 in the operative condition shown in Figure 1 , is arranged in a first position in which it is arranged generally vertically so as to extend across the airflow passage 10. This corresponds to the operative condition of the heater 18 as shown in Figure 3 . In this operative condition, the heater will be energised and air directed through the heater will be heated to an appropriate temperature and exhausted through the air outlet port 8. In this operative condition, the cooling unit 14 will normally be inoperative.
  • the electric heater is de-energised and coolant circulated through the cooling unit 14.
  • the actuator 52 is energised to rotate the heater 18 about its axis 54 by 90 ° to a second position in which it lies along the airflow passage 10, generally parallel to the air flow.
  • the heating unit 18 presents a much reduced frontal area to the airflow, thereby reducing the resistance to airflow. Accordingly, there is a smaller pressure drop across the heater than would otherwise be the case. This means that in the cooling mode, the cooling capacity of the cooling unit 14 is increased or the fan 16 can be made smaller thereby reducing energy consumption.
  • the heater 18 may be mounted in a different position in the airflow passage 10, and need not have a rotational axis extending across the centre of the passage - the axis could be displaced to or towards a side of the passage.
  • a different type of actuator could be used.
  • a different type of heater could also be used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Air-Flow Control Members (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Claims (11)

  1. Appareil de conditionnement d'air (2) comprenant une unité de refroidissement (14), une unité de chauffage (18) et un ventilateur (16) pour laisser s'écouler l'air à travers les unités de chauffage et de refroidissement, l'unité de chauffage étant montée pour le mouvement pivotant ou rotatif, caractérisé en ce que l'unité de chauffage (18) est mobile entre des première et seconde positions à l'intérieur d'un passage d'écoulement d'air (10) de l'appareil (2), l'unité de chauffage ayant un axe de rotation (54) s'étendant à travers le passage d'écoulement d'air, et l'unité de chauffage présentant une résistance à l'écoulement d'air à travers le passage d'écoulement d'air dans ses première et seconde positions, la résistance à l'écoulement d'air étant inférieure dans sa seconde position à la résistance dans sa première position.
  2. Appareil (2) selon la revendication 1, dans lequel, dans une position, l'unité de chauffage (18) s'étend sensiblement sur le passage d'écoulement d'air (10) et dans l'autre position, elle s'étend généralement le long du passage d'écoulement d'air, fournissant ainsi une moindre résistance à l'écoulement d'air.
  3. Appareil (2) selon la revendication 1 ou 2, dans lequel l'axe de rotation (54) s'étend horizontalement à travers le passage d'écoulement d'air (10).
  4. Appareil (2) selon la revendication 1, 2 ou 3 comprenant un actionneur linéaire (52) et un couplage rotatif (50) pour le mouvement de l'unité de chauffage (18).
  5. Appareil (2) selon la revendication 4, dans lequel l'actionneur (52) est un thermoactionneur.
  6. Appareil (2) selon l'une quelconque des revendications précédentes, dans lequel l'unité de chauffage (18) est une unité de chauffage électrique.
  7. Appareil (2) selon la revendication 6, dans lequel l'unité de chauffage (18) comprend un élément de chauffage (22) supporté dans un châssis (20), ledit châssis étant monté pour le mouvement.
  8. Appareil (2) selon l'une quelconque des revendications précédentes, dans lequel l'unité de chauffage (18) est positionnée en aval de l'unité de refroidissement (14).
  9. Appareil (2) selon l'une quelconque des revendications précédentes, dans lequel l'unité de refroidissement (14) comprend un serpentin de refroidissement alimenté avec du réfrigérant.
  10. Appareil (2) selon l'une quelconque des revendications précédentes, dans lequel le ventilateur (16) est un ventilateur centrifuge.
  11. Appareil (2) selon l'une quelconque des revendications précédentes, dans lequel le ventilateur (16) est positionné entre l'unité de refroidissement (14) et l'unité de chauffage (18).
EP02251748A 2002-03-12 2002-03-12 Appareil de conditionnement d'air Expired - Lifetime EP1344989B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES02251748T ES2325149T3 (es) 2002-03-12 2002-03-12 Aparato de acondicionamiento de aire.
AT02251748T ATE431528T1 (de) 2002-03-12 2002-03-12 Klimagerät
EP02251748A EP1344989B1 (fr) 2002-03-12 2002-03-12 Appareil de conditionnement d'air
DE60232301T DE60232301D1 (de) 2002-03-12 2002-03-12 Klimagerät

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02251748A EP1344989B1 (fr) 2002-03-12 2002-03-12 Appareil de conditionnement d'air

Publications (2)

Publication Number Publication Date
EP1344989A1 EP1344989A1 (fr) 2003-09-17
EP1344989B1 true EP1344989B1 (fr) 2009-05-13

Family

ID=27763426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02251748A Expired - Lifetime EP1344989B1 (fr) 2002-03-12 2002-03-12 Appareil de conditionnement d'air

Country Status (4)

Country Link
EP (1) EP1344989B1 (fr)
AT (1) ATE431528T1 (fr)
DE (1) DE60232301D1 (fr)
ES (1) ES2325149T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2295885A1 (fr) * 2009-08-27 2011-03-16 STULZ GmbH Boîte climatique dotée d'un échangeur thermique et procédé de climatisation
CN102466313A (zh) * 2010-11-18 2012-05-23 世图兹空调技术系统(上海)有限公司 带可折起式热交换盘管的空调柜
CN112984652A (zh) * 2019-12-17 2021-06-18 阿里巴巴集团控股有限公司 风机盘管设备及其调整方法和装置，空调设备及调整方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1604240C3 (de) * 1965-08-13 1978-05-18 Nikolaus 7141 Aldingen Laing Gerät zum Heizen und/oder Kühlen von Raumluft
JPS594839A (ja) * 1982-06-30 1984-01-11 Toshiba Corp 空気調和機
GB2296087A (en) * 1994-12-12 1996-06-19 Industcool Eng Ltd Air conditioning arrangement

Also Published As

Publication number Publication date
EP1344989A1 (fr) 2003-09-17
DE60232301D1 (de) 2009-06-25
ATE431528T1 (de) 2009-05-15
ES2325149T3 (es) 2009-08-27

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