EP2090843B1 - Air conditioning apparatus - Google Patents

Air conditioning apparatus Download PDF

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Publication number
EP2090843B1
EP2090843B1 EP07859705.1A EP07859705A EP2090843B1 EP 2090843 B1 EP2090843 B1 EP 2090843B1 EP 07859705 A EP07859705 A EP 07859705A EP 2090843 B1 EP2090843 B1 EP 2090843B1
Authority
EP
European Patent Office
Prior art keywords
air
shutter
blowing
blowing port
air conditioning
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.)
Active
Application number
EP07859705.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2090843A4 (en
EP2090843A1 (en
Inventor
Akinori Nakai
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.)
Daikin Industries Ltd
Panasonic Corp
Original Assignee
Daikin Industries Ltd
Panasonic 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 Daikin Industries Ltd, Panasonic Corp filed Critical Daikin Industries Ltd
Publication of EP2090843A1 publication Critical patent/EP2090843A1/en
Publication of EP2090843A4 publication Critical patent/EP2090843A4/en
Application granted granted Critical
Publication of EP2090843B1 publication Critical patent/EP2090843B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • 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
    • F24F1/005—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted on the floor; standing on the floor
    • 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
    • F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
    • F24F2013/1433—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with electric motors

Definitions

  • the present invention relates to air conditioning apparatuses.
  • an air conditioning apparatus according to the preamble of claim 1 and also a method and apparatus for controlling airflow in an indoor machine of an air conditioner.
  • an airflow control method and airflow controller for an air conditioner indoor unit capable of executing air conditioning so that indoor temperature distribution becomes uniform without any sense of airflow during heating operation.
  • a turbofan that has an axis extending in an antero-posterior direction and blows air taken in from a front surface side radially outwardly with respect to an axis inside a casing and a heat exchanger disposed on the front surface side of the turbofan inside the casing.
  • the casing is provided with outlet ports for blowing air from the turbofan in the vertical direction and the horizontal direction.
  • a control signal is outputted by a flap control section to an upper flap stepping motor and a left-hand flap stepping motor so as to narrow the openings of the upper, right-hand and left-hand flaps and make the opening of the lower flap wider than the openings of the upper, right-hand and left-hand flaps.
  • the upper damper is opened and the lower damper is closed so that cold air may not be blown directly toward legs of a human body.
  • the upper damper is closed and the lower damper is opened so that warm air may be sent toward the human legs.
  • An object of the present invention is accordingly to provide an air conditioning apparatus which enables a foreign substance to be easily taken out from a lower air-blowing port even if the foreign substance invades the apparatus from an upper air-blowing port, so that it is possible to prevent an operational failure in opening/closing of the shutter caused by the foreign substance.
  • an air conditioning apparatus comprising:
  • the shutter is driven by the shutter driving section so that the lower air-blowing port is put into the fully opened state after or immediately before operation of the fan is stopped.
  • the shutter driving section so that the lower air-blowing port is put into the fully opened state after or immediately before operation of the fan is stopped.
  • a lower air-blowing path for leading the air for air conditioning supplied from the fan to the lower air-blowing port is provided inside the main body casing, the shutter is rotated around a shaft provided in a lower part of the lower air-blowing path, and in the fully opened state of the shutter, a part of a lower wall surface among wall surfaces of the lower air-blowing path is formed by a side surface of the shutter.
  • the lower air-blowing port when the lower air-blowing port is put into the fully opened state by rotation of the shutter around the shaft provided in the lower part of the lower air-blowing path, a part of the lower wall surface among wall surfaces of the lower air-blowing path is formed by the side surface of the shutter, so that the lower surface of the lower air-blowing path has no level difference in level.
  • the air conditioning apparatus of the invention even if a foreign substance invades from the upper air-blowing port, it is possible to easily take out the foreign substance from the lower air-blowing port. This makes it possible to realize an air conditioning apparatus which can prevent operational failure in opening/closing of the shutter caused by the foreign substance.
  • a part of the lower wall surface among wall surfaces of the lower air-blowing path is formed by a side surface of the shutter.
  • Fig. 1 shows a refrigerant circuit diagram of the air conditioning apparatus as one embodiment of the invention.
  • the air conditioning apparatus has a compressor 1, a four-way valve 2 one end of which is connected to a discharge side of the compressor 1, an outdoor heat exchanger 3 one end of which is connected to another end of the four-way valve 2, an electric expansion valve 4 one end of which is connected to the other end of the outdoor heat exchanger 3, an indoor heat exchanger 5 one end of which is connected to the other end of the electric expansion valve 4 via a closing valve 12, and an accumulator 6 one end of which is connected to the other end of the indoor heat exchanger 5 via a closing valve 13 and the four-way valve 2 while the other end of the accumulator 6 is connected to a suction side of the compressor 1.
  • a refrigerant circuit is formed by the compressor 1, the four-way valve 2, the outdoor heat exchanger 3, the electric expansion valve 4, the indoor heat exchanger 5 and the accumulator 6.
  • the air conditioning apparatus has an outdoor fan 7 placed in the vicinity of the outdoor heat exchanger 3, an indoor fan 8 placed in the vicinity of the indoor heat exchanger 5, a flap driving section 32 for driving a flap 24, a shutter driving section 31 for driving the shutter 30 (shown in Fig. 3 ), and a control device 11 for controlling the compressor 1, the electric expansion valve 4, the outdoor fan 7, the indoor fan 8, the flap driving section 32, the shutter driving section 31 and so on.
  • the control device 11 is formed by a microcomputer, an input/output circuit and so on.
  • the control device 11 has a flap control section 11a for controlling the flap driving section 32, and a shutter control section 11b for controlling the shutter driving section 31.
  • An outdoor unit 10 is formed by the compressor 1, the four-way valve 2, the outdoor heat exchanger 3, the electric expansion valve 4, the accumulator 6, the outdoor fan 7 and the control device 11.
  • An indoor unit 20 is formed by the indoor heat exchanger 5, the indoor fan 8, the flap driving section 32 and the shutter driving section 31.
  • the refrigerant circulates through the refrigerant circuit which is formed by the compressor 1, the indoor heat exchanger 5, the electric expansion valve 4, the outdoor heat exchanger 3 and the accumulator 6. Indoor air is circulated through the indoor heat exchanger 5 by the indoor fan 8, and thereby the indoor room is heated.
  • the four-way directional control valve 2 is switched to a switch position shown by a dotted line.
  • the refrigerating cycle is implemented by circulation of the refrigerant in order of the compressor 1, the outdoor heat exchanger 3, the electric expansion valve 4, the indoor heat exchanger 5, and the accumulator 6.
  • Fig. 2 shows a perspective view of the indoor unit 20 of the air conditioning apparatus.
  • the indoor unit 20 has a base frame 21, a front grill 22 and a front panel 23, as shown in Fig. 2 , wherein the base frame 21 has a generally rectangular shape whose rear-face side is mounted on an indoor wall surface, wherein the front grill 22 is mounted on the front side of the base frame 21 and has a generally rectangular-shaped opening 22c, and wherein the front panel 23 is mounted so as to cover the opening 22c of the front grill 22.
  • An upper side outlet 22a is provided in the upper part of the front grill 22.
  • a lower side outlet 22b is provided in the lower part of the front grill 22.
  • the upper side outlet 22a of the front grill 22 is equipped with a flap 24.
  • the flap 24 rotates during cooling and heating operations to respectively blow cool and warm air from the upper side outlet 22a in the obliquely upward forward direction. At the time of stoppage, the flap 24 covers the upper side outlet 22a, as shown in Fig. 2 .
  • An upper side inlet 23a is provided on the upper side of the front panel 23.
  • a lower side inlet 23b is provided on the lower side of the front panel 23.
  • lateral inlets 23c are provided on the right and left sides of the front panel 23 ( Fig. 2 shows only a right-side inlet).
  • Fig. 3 shows a cross sectional view of the indoor unit 20 of the air conditioning apparatus.
  • a motor 26 is fixed onto a generally central portion of the base frame 21.
  • the indoor fan 8 as an example of an air-blowing fan, placed on the base frame 21 so as to be connected to a shaft of the motor 26 which is oriented in an anteroposterior direction.
  • the indoor fan 8 is a turbo fan for blowing air, which is sucked from the front side, in the outward radial direction with respect to the shaft.
  • a bell mouth 27 is provided in the base frame 21 on the front side of the indoor fan 8.
  • the indoor heat exchanger 5 is placed on the front side of the bell mouth 27.
  • the front grill 22 is mounted on the front side of the indoor heat exchanger 5.
  • the front panel 23 is mounted on the front side of the front grill 22.
  • the opening 22c of the front grill 22 is equipped with a filter 25.
  • a drain pan 28 is placed in the lower part of the bell mouth 27 and on the lower side of the
  • the flap 24 is rotated by using the flap driving section 32 (shown in Fig. 1 ) around a shaft (not shown) provided on the side of the base frame 21.
  • an open state A1 of the flap 24 is shown by an alternate long and short dash line, whereas a closed state B1 is shown by a solid line.
  • the shutter 30 is placed in a lower air-blowing path P2 of the front grill 22, so that the lower air-blowing port 22b can be opened and closed by the shutter 30.
  • the shutter 30 is rotated by using the shutter driving section 31 (shown in Fig. 1 ) around a shaft 30a which is provided on the side of the base frame 21 and on the lower side of the lower air-blowing path P2.
  • a fully opened state A2 and a fully closed state B2 are shown by an alternate long and short dash line.
  • the air is sucked through the opening 22c of the front grill 22 by using the indoor fan 8, so that the air is blown in the outward radial direction with respect to the shaft of the indoor fan 8. Then, the air is blown out forward and obliquely upward from the upper air-blowing port 22a via the upper air-blowing path P1, while the air is blown out forward from the lower air-blowing port 22b via the lower air-blowing path P2.
  • step S1 Upon start of the stop processing, it is determined in a step S1 whether or not the operation is stopped. If it is determined that the operation is stopped, then go to a step S2. If it is determined that the operation is not stopped, then the processing is ended.
  • step S2 the flap 24 is rotated to be closed by the flap driving section 32. As the result, the upper air-blowing port 22a is closed. Then, next is to proceed to a step S3.
  • step S3 it is determined whether or not the shutter 30 is in a closed state. If it is determined that the shutter 30 is in the closed state, then proceed to a step S4. If it is determined that the shutter 30 is not in the closed state, then end the processing.
  • step S4 the shutter 30 is opened to put the lower air-blowing port 22b into the fully opened state by the shutter driving section 31.
  • the lower air-blowing port 22b is put into the fully opened state either after or immediately before the air conditioning operation is stopped. At least, either after or immediately before the operation of the indoor fan 8 is stopped, the lower air-blowing port 22b is put into the fully opened state.
  • Figs. 5A to 5D show schematic views of operating states of the flap 24 and the shutter 30 in the indoor unit 20 of the air conditioning apparatus, wherein a reference numeral 8 denotes the indoor fan.
  • Fig. 5A shows that the upper air-blowing port 22a is opened by rotation of the flap 24 while the lower air-blowing port 22b is opened or closed by rotation of the shutter 30 around the shaft 30a.
  • Fig. 5B shows that the upper air-blowing port 22a is in the closed state while the lower air-blowing port 22b is closed by the shutter 30.
  • Fig. 5C shows that the upper air-blowing port 22a is in the closed state while the lower air-blowing port 22b is opened by the shutter 30 which is reclined on and along a rear lower wall surface of a lower air-blowing path.
  • the shutter 30 upon stop of the operation, the shutter 30 is driven by the shutter driving section 31 to put the lower air-blowing port 22b into the fully opened state. Therefore, even if a foreign substance invades from the upper air-blowing port 22a, it is possible to easily take out a foreign substance from the lower air-blowing port 22b. This makes it possible to realize an air conditioning apparatus which can prevent the operational failure in opening/closing of the shutter 30 caused by the foreign substance.
  • the air conditioning apparatus using the indoor fan 8 which is a turbo fan blowing the air sucked from the front side toward the outward radial direction with respect to the shaft.
  • the fan for blowing air is not limited to the above.
  • the present invention is applicable to air conditioning apparatus using other types of centrifugal fans or the like.
  • the separate-type air conditioning apparatus having exterior and indoor units has been employed.
  • the present invention may also be applied to air conditioning apparatus having other configurations.

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)
  • Air-Flow Control Members (AREA)
  • Air Conditioning Control Device (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
EP07859705.1A 2006-12-06 2007-12-04 Air conditioning apparatus Active EP2090843B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006329375A JP4160090B2 (ja) 2006-12-06 2006-12-06 空気調和機
PCT/JP2007/073395 WO2008069200A1 (ja) 2006-12-06 2007-12-04 空気調和機

Publications (3)

Publication Number Publication Date
EP2090843A1 EP2090843A1 (en) 2009-08-19
EP2090843A4 EP2090843A4 (en) 2013-01-23
EP2090843B1 true EP2090843B1 (en) 2017-09-20

Family

ID=39492086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07859705.1A Active EP2090843B1 (en) 2006-12-06 2007-12-04 Air conditioning apparatus

Country Status (5)

Country Link
EP (1) EP2090843B1 (ja)
JP (1) JP4160090B2 (ja)
AU (1) AU2007329953B2 (ja)
ES (1) ES2642044T3 (ja)
WO (1) WO2008069200A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4807285B2 (ja) * 2007-03-07 2011-11-02 パナソニック株式会社 空気調和機
JP2010078227A (ja) * 2008-09-26 2010-04-08 Daikin Ind Ltd 空気調和機
JP5112239B2 (ja) * 2008-09-30 2013-01-09 三菱重工業株式会社 空気調和機
JP5193838B2 (ja) * 2008-12-15 2013-05-08 パナソニック株式会社 空気調和機
IT1403657B1 (it) * 2011-01-28 2013-10-31 Giordano Riello Internat Group S P A Ventilconvettore
KR102530178B1 (ko) 2016-01-07 2023-05-10 삼성전자주식회사 공기조화기
JP7022290B1 (ja) * 2020-09-24 2022-02-18 ダイキン工業株式会社 床置き型空気調和機

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58196734U (ja) * 1982-06-23 1983-12-27 株式会社東芝 空気調和機の室内ユニツト
JPH0684839B2 (ja) * 1984-08-29 1994-10-26 三洋電機株式会社 空気調和機
JP3223819B2 (ja) * 1996-11-15 2001-10-29 ダイキン工業株式会社 空気調和機
JP2947236B2 (ja) * 1997-08-08 1999-09-13 ダイキン工業株式会社 空気調和機の吹出口構造
JP3137042B2 (ja) 1997-08-08 2001-02-19 ダイキン工業株式会社 空気調和機の室内機の気流制御方法および気流制御装置
JP2980093B2 (ja) * 1998-03-02 1999-11-22 ダイキン工業株式会社 空気調和機のファン制御装置
JPH11325550A (ja) * 1998-05-08 1999-11-26 Hitachi Ltd 空気調和機
JP2000208366A (ja) 1999-01-18 2000-07-28 Nichicon Corp アルミニウム電解コンデンサ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2008069200A1 (ja) 2008-06-12
AU2007329953B2 (en) 2010-10-21
JP4160090B2 (ja) 2008-10-01
JP2008144985A (ja) 2008-06-26
EP2090843A4 (en) 2013-01-23
AU2007329953A1 (en) 2008-06-12
EP2090843A1 (en) 2009-08-19
ES2642044T3 (es) 2017-11-15

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