EP2241832B1 - Indoor unit of air conditioner - Google Patents

Indoor unit of air conditioner Download PDF

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Publication number
EP2241832B1
EP2241832B1 EP10155874.0A EP10155874A EP2241832B1 EP 2241832 B1 EP2241832 B1 EP 2241832B1 EP 10155874 A EP10155874 A EP 10155874A EP 2241832 B1 EP2241832 B1 EP 2241832B1
Authority
EP
European Patent Office
Prior art keywords
airflow direction
direction plate
vertical airflow
vertical
braking member
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.)
Not-in-force
Application number
EP10155874.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2241832A1 (en
Inventor
Yoshiyuki Nakagawa
Tetsuo Yamashita
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP2241832A1 publication Critical patent/EP2241832A1/en
Application granted granted Critical
Publication of EP2241832B1 publication Critical patent/EP2241832B1/en
Not-in-force 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
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/075—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having parallel rods or lamellae directing the outflow, e.g. the rods or lamellae being individually adjustable
    • 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
    • F24F2013/1473—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 cams or levers

Definitions

  • the present invention relates to an indoor unit of an air conditioner, and more specifically, to an indoor unit of an air conditioner having an airflow direction plate at a blowout port.
  • an indoor unit of an air conditioner performs fine airflow direction control in the vertical direction by providing a pair of vertical airflow direction plates at a blowout port and rotating the same by separate motors respectively.
  • An invention in which a stopper member for positioning the reference positions of the vertical airflow direction plates is reinforced at this time is disclosed (for example, see Patent Literature 1).
  • JP-A-10-103751 pp. 4-5, Fig. 1
  • WO-A-98/11392 recites an indoor unit of an air conditioner according to the preamble of claim 1.
  • An indoor unit of an air conditioner according to the present invention is defined in claim 1.
  • a preferred embodiment is defined in claim 2.
  • Such an indoor unit includes:
  • the pair of vertical airflow direction plates are prevented from being interfered and brought into a non-rotatable state while narrowing the clearance therebetween when operation is stopped.
  • the phase of the first braking member provided on the first vertical airflow direction plate and the phase of the second braking member provided on the second vertical airflow direction plate are in a predetermined relation, one constrains the rotation of the other and disables the rotation of the other, and hence inadvertent rotation is prevented.
  • Fig. 1 to Fig. 10 are drawings for explaining an indoor unit of an air conditioner according to an example not covered by the invention.
  • Fig. 1 is a front view
  • Fig. 2 is a perspective view
  • Fig. 3 is a side cross sectional view
  • Fig. 4 is a partly see-through perspective view
  • Fig. 5 is an exploded perspective view illustrating components which constitute an rotating mechanism
  • Fig. 6 to Fig. 8 are side views illustrating actions of the components of the rotating mechanism
  • Fig. 9 and Fig. 10 are side cross-sectional views illustrating actions of vertical airflow direction plates.
  • Fig. 1 to Fig. 10 are illustrated schematically.
  • an indoor unit 1 of an air conditioner (hereinafter, referred to as "indoor unit”) includes a box-shaped main body 10, a blowing fan 20 stored in the interior of the main body 10, a heat exchanger 30 arranged so as to oppose part of the blowing fan 20, and a front panel (precisely speaking, it is the same as a design panel which also covers parts of side surfaces of the main body 10) 40 covering an opening on an front surface of the main body 10 (a left side in Fig. 3 ).
  • the main body 10 is configured to be mounted with a rear surface (a right side in Fig. 3 ) thereof placed on a wall or the like of a room, and includes an inlet port 50 for sucking indoor air on an upper surface (an upper side in Fig. 3 ), and a fan casing 60 for defining an air duct from the blowing fan 20 in the interior thereof.
  • the fan casing 60 is a space having a predetermined width and being surrounded by a casing rear member (the same as a casing rear panel) 61 arranged on the rear surface side, a casing front member 62 arranged on an opening side on the front surface, and a partition wall 80 (see Fig. 5 ) which constitutes side surfaces. Then, a clearance defined between a terminal end of the fan casing 60, that is, a side edge on the front surface side of a lower surface (a lower side in Fig. 3 ) and a side edge on the lower side of the front panel 40 corresponds to a blowout port 63.
  • first vertical airflow direction plate 100 and a second vertical airflow direction plate 200 are rotatably provided at the blowout port 63 at a position closer to the front face side and at a position closer to a rear face side, respectively.
  • a back side 100b of the first vertical airflow direction plate 100 is provided with airflow direction plate flanges 101 at a predetermined interval, and an airflow direction plate revolving shaft 102 is provided therethrough.
  • the casing front member 62 is provided with a casing flange 64, and a casing bearing 65 is provided thereon.
  • the airflow direction plate revolving shaft 102 is rotatably supported by the casing bearing 65.
  • the airflow direction plate flange 201 is provided at a predetermined interval, and an airflow direction plate revolving shaft 202 is provided therethrough.
  • a casing flange not shown, is provided at the blowout port 63, and a casing bearing 67 is provided thereon.
  • the airflow direction plate revolving shaft 202 is rotatably supported by the casing bearing 67.
  • the first vertical airflow direction plate 100 and the second vertical airflow direction plate 200 are configured to be rotated independently, and a first stepping motor 190 configured to rotate the first vertical airflow direction plate 100 and a second stepping motor 290 configured to rotate the second vertical airflow direction plate 200 are stored in a motor case 90 provided on the partition wall 80 of the main body 10.
  • the rotating mechanism will be described in detail below.
  • the first braking member 110 includes a shaft portion 111 having a circular shape in cross section, a disk portion 112 provided on the shaft portion 111, an arcuate-shaped depressed portion 113 formed on the disk portion 112, and an end portion 114 connected to a revolving shaft of the first stepping motor 190.
  • the second drive member 210 includes a shaft portion 211 having a circular-shaped cross section, a drive flange 212 provided on the shaft portion 211, a drive pin 213 provided at an end of the drive flange 212, and an end portion 214 connected to a revolving shaft of the second stepping motor 290.
  • the second drive member 210 is connected to a second braking member 240 via a second coupling member 230.
  • the second coupling member 230 includes a coupling arm 231, and coupling pin holes 233 and 234 provided respectively at both end portions of the coupling arm 231.
  • the second braking member 240 includes a shaft portion 241, a fan-shaped portion 242 formed into a fan shape having a pivot at a center of the shaft portion 241, a brake flange 243 provided on the shaft portion 241, and a brake pin 244 provided at an end of the brake flange 243.
  • the partition wall 80 is provided with a partition wall bearing 81 configured to rotatably support the shaft portion 111 of the first braking member 110, a partition wall bearing 82 configured to rotatably support the shaft portion 211 of the second drive member 210 on the side of the partition wall 80, and a partition wall bearing 84 configured to rotatably support the shaft portion 241 of the second braking member 240.
  • the partition wall bearing 84 is positioned between the partition wall bearing 81 and the partition wall bearing 82 so as to have a triangle relation in position.
  • the motor case 90 is provided with a bearing (not shown) for rotatably supporting the shaft portion 241 of the second braking member 240 on the side of the first stepping motor 190.
  • a bearing (not shown) for rotatably supporting the shaft portion 241 of the second braking member 240 on the side of the first stepping motor 190.
  • this bearing and the partition wall bearing 84 may be omitted.
  • the motor case 90 is formed with a through hole 98 which allows a nut (not shown) for mounting the same to the partition wall 80 to penetrate therethrough, and the partition wall 80 is formed with a partition wall female screw 89 at a position corresponding to the through hole 98.
  • the first stepping motor 190 and the second stepping motor 290 are provided in the motor case 90 by a known measure.
  • the shaft portion 111 of the first braking member 110 connected to the first vertical airflow direction plate 100 is rotatably supported by the partition wall bearing 81
  • the shaft portion 211 of the second drive member 210 connected to the second vertical airflow direction plate 200 is rotatably supported by the partition wall bearing 82
  • the shaft portion 241 of the second braking member 240 is rotatably supported by the partition wall bearing 84 and a bearing (not shown) provided on the motor case 90, respectively.
  • the coupling pin hole 233 and the coupling pin hole 234 of the second coupling member 230 are rotatably fitted to the drive pin 213 of the second drive member 210 and the brake pin 244 of the second braking member 240, respectively.
  • the first vertical airflow direction plate 100 stands upright substantially perpendicularly, and the second vertical airflow direction plate 200 is tilted substantially horizontally.
  • the arcuate-shaped depressed portion 113 of the first braking member 110 of the first vertical airflow direction plate 100 stands upright substantially perpendicularly.
  • the drive flange 212 of the second drive member 210 stands upright, and pushes the second coupling member 230 upward. Therefore, the fan-shaped portion 242 of the second braking member 240 is tilted substantially horizontally.
  • an arcuate surface (depressed surface) of the arcuate-shaped depressed portion 113 and an arcuate surface (projecting surface) of the fan-shaped portion 242 come into abutment with each other. Therefore, even when an attempt is made to rotate the first vertical airflow direction plate 100, the abutment prevents the rotation, and hence the first vertical airflow direction plate 100 cannot be rotated. In other words, the first vertical airflow direction plate 100 assumes a locked state.
  • the first vertical airflow direction plate 100 can be tilted substantially horizontally.
  • an end of the fan-shaped portion 242 of the second braking member 240 abuts on the disk portion 112 of the first braking member 110, so that the rotation is prevented. Since a clearance is provided between the both in the drawing, the rotation is made by an amount corresponding to the clearance, to be exact.
  • a control unit for controlling rotations of the first stepping motor 190 and the second stepping motor 290 performs the following control.
  • the first vertical airflow direction plate 100 assumes a substantially perpendicular position, and the second vertical airflow direction plate 200 stays standstill in a substantially horizontal position and covers the blowout port 63 when operation is stopped.
  • the rotating mechanism assumes a state in which the first braking member 110 and the second braking member 240 are locked.
  • the second vertical airflow direction plate 200 rotates counterclockwise (the second stepping motor 290 rotates) and stops in the substantially horizontal state. Then, the blowout port 63 is covered by the first vertical airflow direction plate 100 and the second vertical airflow direction plate 200.
  • the first vertical airflow direction plate 100 or the second vertical airflow direction plate 200 is prevented from rotating inadvertently by locking or unlocking between the first braking member 110 and the second braking member 240, even when the first vertical airflow direction plate 100 and the second vertical airflow direction plate 200 are arranged in proximity, interference does not occur when the both rotate.
  • the clearance of the blowout port 63 may be narrowed comparatively to cover the blowout port 63 by the first vertical airflow direction plate 100 and the second vertical airflow direction plate 200.
  • the design characteristics of the blowout port 63 is secured by a front side 100a of the first vertical airflow direction plate 100 and a front side 200a of the second vertical airflow direction plate 200.
  • first braking member 110 and the second braking member 240 are in abutment with each other over a wide range of an arcuate abutment surface, it is also possible to form the arcuate shaped depressed portion 113 of the first braking member 110 into a flat face so that the first braking member 110 comes into partly abutment with the second braking member 240 only when the first braking member 110 rotates a predetermined angle.
  • the disk portion 112 does not have to be circular because an abutment surface with the second braking member 240 may be formed.
  • Fig. 11 to Fig. 14 are drawings for explaining an indoor unit of an air conditioner according to an embodiment of the invention.
  • Fig. 11 is an exploded perspective view illustrating the components which constitute the rotating mechanism and
  • Fig. 12 to Fig. 14 are side views illustrating actions of the components of the rotating mechanism.
  • an indoor unit 2 of the air conditioner (hereinafter, referred to as "indoor unit") is different from the indoor unit 1 (Example) only in configuration of the rotating mechanism, and other parts of the configuration are the same as the indoor unit 1. Therefore, portions which are the same as or corresponding to the indoor unit 1 are designated by the same reference numerals and the description is partly omitted.
  • the first braking member 120 includes a shaft portion 121 having a circular shape in cross-section, a cam portion 122 provided on the shaft portion 121, and an end portion 124 connected to a revolving shaft of the first stepping motor 190.
  • the cam portion 122 is an end cam formed with a shouldered portion 123 and has a large diameter portion 122a and a small diameter portion 122b having a smaller distance from a center of the shaft portion 121 than the large diameter portion 122a with the shouldered portion 123 as a boundary.
  • the second braking member 220 includes a shaft portion 221 having a circular shape in cross-section, a cam portion 222 provided on the shaft portion 221, and an end portion 224 connected to a revolving shaft of the second stepping motor 290.
  • the cam portion 222 is an end cam formed with a shouldered portion 223 and has a large diameter portion 222a and a small diameter portion 222b having a smaller distance from a center of the shaft portion 221 than the large diameter portion 222a with the shouldered portion 223 as a boundary.
  • a seesaw member 300 has an arm portion 304 and a swinging shaft 303 provided at a center of the arm portion 304.
  • one of ends of the arm portion 304 is referred to as a first end 301, and the other end is referred to as a second end 302.
  • the partition wall 80 is provided with the partition wall bearing 81 configured to rotatably support the shaft portion 121 of the first braking member 120, the partition wall bearing 82 configured to rotatably support the shaft portion 221 of the second braking member 220, and a partition wall bearing 83 configured to rotatably support the swinging shaft 303 of the seesaw member 300 on the side of the partition wall 80.
  • the swinging shaft 303 of the seesaw member 300 on the side of the motor case 90 is rotatably supported by a bearing (not shown) provided on the motor case 90, one of the bearing or the partition wall bearing 83 may be omitted.
  • the first vertical airflow direction plate 100 stands upright substantially perpendicularly and, in contrast, the second vertical airflow direction plate 200 is collapsed substantially horizontally.
  • the small diameter portion 122b of the first braking member 120 connected integrally to the first vertical airflow direction plate 100 is positioned on the upper side
  • the large diameter portion 222a of the second braking member 220 connected integrally to the second vertical airflow direction plate 200 is positioned on the upper side
  • the second end 302 of the seesaw member 300 abuts on the large diameter portion 222a.
  • the first end 301 of the seesaw member 300 is in abutment with the small diameter portion 122b of the first braking member 120 or opposes the same with a slight clearance therebetween.
  • the shouldered portion 123 of the first braking member 120 comes into abutment with the first end 301 of the seesaw member 300 to cause the seesaw member 300 to rotate clockwise.
  • the second end 302 of the seesaw member 300 comes into abutment with the large diameter portion 222a of the second braking member 220, the first vertical airflow direction plate 100 cannot be rotated counterclockwise.
  • the first vertical airflow direction plate 100 assumes a locked state.
  • the second end 302 of the seesaw member 300 is allowed to rotate (pivot) until it comes into abutment with the small diameter portion 222b of the second braking member 220.
  • the first stepping motor 190 is activated and the first vertical airflow direction plate 100 is rotated counterclockwise in a state shown in Fig. 13 , the first vertical airflow direction plate 100 is tilted substantially horizontally.
  • the seesaw member 300 is allowed to rotate (pivot) as described above, when the first braking member 120 rotates counterclockwise, the large diameter portion 122a of the cam portion 122 comes into abutment with the second end 302 of the seesaw member 300 to rotate the seesaw member 300. In other words, a state in which the lock of the first vertical airflow direction plate 100 is released (the same as "unlock") is assumed. At this time, the second end 302 of the seesaw member 300 is in abutment with the small diameter portion 222b of the second braking member 220 or opposes the same with a slight clearance therebetween.
  • the second end 302 of the seesaw member 300 comes into abutment with the shouldered portion 223 of the second braking member 220 to cause the seesaw member 300 to rotate counterclockwise.
  • the second vertical airflow direction plate 200 cannot be rotated counterclockwise. In other words, the second vertical airflow direction plate 200 assumes a locked state.
  • the seesaw member 300 is not limited to a V-shape, and may be a rectangular shape (rod shape).
  • the shapes of the cam portions 122 and 222 are not limited to the illustrated shape. In other words, they may be of any shape as long as a projection which only abuts on the second end 302 of the seesaw member 300 is provided on the cam portion 222 of the second braking member 220, a depressed portion which allows entry of the first end 301 into the seesaw member 300 is provided on the cam portion 122 of the first braking member 120 for the period when operation is stopped, a projection which only abuts on the first end 301 of the seesaw member 300 is provided on the cam portion 122 of the first braking member 120, and the depressed portion which allows entry of the second end 302 of the seesaw member 300 is provided on the cam portion 222 of the second braking member 220 during operation is stopped.
  • the indoor unit according to the invention can be widely used as the indoor units of a variety of air conditioners both for home use and business use.
  • 1 indoor unit (Example), 2: indoor unit (Embodiment of the invention), 10: main body, 20: blowing fan, 22: coupling member, 30: heat exchanger, 40: front panel, 50: inlet port, 60: fan casing, 61: casing rear member, 62: casing front member, 63: blowout port, 64: casing flange, 65: casing bearing, 67: casing bearing, 80: partition wall, 81: partition wall bearing , 82: partition wall bearing, 83: partition wall bearing, 84: partition wall bearing, 89: partition wall female screw, 90: motor case, 98: through hole, 100: first vertical airflow direction plate, 100a: front side, 100b: back side, 101: airflow direction plate flange, 102: airflow direction plate revolving shaft, 110: first braking member (Example), 111: shaft portion, 112: disk portion, 113: arcuate-shaped depressed portion, 114: end portion, 120: first braking member (Embod

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
EP10155874.0A 2009-04-13 2010-03-09 Indoor unit of air conditioner Not-in-force EP2241832B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009097261A JP5306032B2 (ja) 2009-04-13 2009-04-13 空気調和機の室内機

Publications (2)

Publication Number Publication Date
EP2241832A1 EP2241832A1 (en) 2010-10-20
EP2241832B1 true EP2241832B1 (en) 2018-09-19

Family

ID=42272219

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10155874.0A Not-in-force EP2241832B1 (en) 2009-04-13 2010-03-09 Indoor unit of air conditioner

Country Status (2)

Country Link
EP (1) EP2241832B1 (enrdf_load_stackoverflow)
JP (1) JP5306032B2 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105020873B (zh) * 2014-04-24 2018-08-07 珠海格力电器股份有限公司 运动机构、面板机构及家用电器
US10724759B2 (en) 2016-02-02 2020-07-28 Mitsubishi Electric Corporation Indoor unit for air-conditioning apparatus
CN106196305B (zh) * 2016-08-31 2022-05-17 芜湖美智空调设备有限公司 导风装置、空调柜机及其送风方法
CN106895548A (zh) * 2017-01-18 2017-06-27 广东美的制冷设备有限公司 一种空调室内机导风条防干涉的控制方法
JP7481493B2 (ja) * 2020-04-30 2024-05-10 海信（広東）空調有限公司 分解洗浄可能な空調室内機

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01217148A (ja) * 1988-02-25 1989-08-30 Sanyo Electric Co Ltd 風向変更装置
JPH04260748A (ja) * 1991-02-14 1992-09-16 Mitsubishi Electric Corp 空気調和機の風向調整装置
JP2559080Y2 (ja) * 1991-08-27 1998-01-14 株式会社ニフコ フラップの開閉構造
JP3036289B2 (ja) * 1993-04-01 2000-04-24 ダイキン工業株式会社 空気調和機における吹出口の水平羽根駆動装置
JP2993436B2 (ja) * 1996-09-11 1999-12-20 ダイキン工業株式会社 空気調和機の吹出口構造

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
JP5306032B2 (ja) 2013-10-02
EP2241832A1 (en) 2010-10-20
JP2010249360A (ja) 2010-11-04

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