EP3690343B1 - Air conditioner indoor unit - Google Patents

Air conditioner indoor unit Download PDF

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Publication number
EP3690343B1
EP3690343B1 EP18861880.5A EP18861880A EP3690343B1 EP 3690343 B1 EP3690343 B1 EP 3690343B1 EP 18861880 A EP18861880 A EP 18861880A EP 3690343 B1 EP3690343 B1 EP 3690343B1
Authority
EP
European Patent Office
Prior art keywords
panel
indoor unit
air conditioning
conditioning indoor
direction adjusting
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
EP18861880.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3690343A4 (en
EP3690343A1 (en
Inventor
Shiori ISHIKAWA
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
Original Assignee
Daikin Industries Ltd
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 filed Critical Daikin Industries Ltd
Publication of EP3690343A1 publication Critical patent/EP3690343A1/en
Publication of EP3690343A4 publication Critical patent/EP3690343A4/en
Application granted granted Critical
Publication of EP3690343B1 publication Critical patent/EP3690343B1/en
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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
    • F24F1/0043—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
    • F24F1/0071—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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/20—Casings or covers
    • 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
    • F24F13/28—Arrangement or mounting of filters

Definitions

  • the present invention relates to an air conditioning indoor unit.
  • An air conditioning indoor unit is typically configured to widely open a front surface of an indoor unit body to facilitate attachment and detachment upon maintenance of an air cleaning filter or the like.
  • JP 10-274423 A discloses an indoor unit including a panel that is turned by a user. The panel is kept supported at a turned position for removal of the filter, or a shaft for turn of the panel is detached from a bearing for removal of the filter.
  • CN 202 281 358 U describes an air conditioner panel opening mechanism comprising a driving gear, driven gear, three connecting rods and a single panel.
  • a further example of a previously known air conditioner indoor unit is derivable from JP 2009 127 979 A .
  • the panel may be retained at a maintenance position by a retention mechanism utilizing frictional force.
  • the panel and the indoor unit body interfere with each other when the panel turns upward to open the front surface of the indoor unit body.
  • a first aspect which corresponds to the present invention includes an indoor unit body, a first panel, and a second panel.
  • the first panel is configured to be retained at a first position to cover a front surface of the indoor unit body, and is configured to be retained at a maintenance position with a lower end being distant from the front surface of the indoor unit body upon maintenance.
  • the second panel is positioned above the first panel and ahead of the indoor unit body.
  • the air conditioning indoor unit is configured such that the first panel is configured to execute at least first motion and second motion different from each other to shift from the first position to the maintenance position. The first motion causes the first panel to shift to be distant from the first position and shift to a second position ahead of the second panel.
  • the first motion causes the first panel to shift obliquely upward from the first position to the second position with a posture being unchanged.
  • the second motion causes the first panel located at the second position to have the lower end of the first panel turned to be distant from the front surface of the indoor unit body and reach the maintenance position.
  • the front surface of the indoor unit body is widely opened to facilitate work upon maintenance.
  • the lower end of the first panel turns upward to open the front surface of the indoor unit body that accordingly interferes with an upper end of the panel.
  • the air conditioning indoor unit prevents interference between the upper end of the first panel and the indoor unit body by not shifting the first panel to the maintenance position at once but shifting the first panel to the second position distant from the indoor unit body and then shifting the first panel to the maintenance position.
  • An air conditioning indoor unit is the air conditioning indoor unit according to the first aspect, in which the lower end of the first panel located at the second position is distant from the indoor unit body.
  • the air conditioning indoor unit usably allows the user to insert a hand because the lower end of the first panel is distant from the indoor unit body.
  • An air conditioning indoor unit is the air conditioning indoor unit according to the first or second aspect, in which the air conditioning indoor unit is configured such that the lower end of the first panel is more distant from the indoor unit body than the upper end during the second motion.
  • the user executing maintenance of a filter or the like from the front surface of the indoor unit body in the air conditioning indoor unit looks at the indoor unit body from obliquely below. Maintenance work is facilitated when the lower end of the first panel is more distant from the indoor unit body than the upper end.
  • An air conditioning indoor unit is the air conditioning indoor unit according to any one of the first to third aspects, wherein the air conditioning indoor unit further includes a panel conveyance mechanism.
  • the panel conveyance mechanism is configured to guide the first panel to at least the second position.
  • the panel conveyance mechanism in the air conditioning indoor unit causes the first panel to always pass the second position, to prevent the user from shifting the first panel to an erroneous position.
  • the air conditioning indoor unit includes an operation unit configured to start operation of the panel conveyance mechanism.
  • the panel conveyance mechanism includes a lower coupling portion and a lock mechanism.
  • the lower coupling portion is coupled to a lower portion of the first panel.
  • the lock mechanism changes the lower portion of the first panel located at the second position and the lower coupling portion into a coupled state or an uncoupled state.
  • the user when the user manually conveys the first panel in the air conditioning indoor unit, the user grips the both ends of the first panel and pulls the first panel toward the user, which may separate the first panel from the panel conveyance mechanism. Provision of the lock mechanism allows the first panel to be conveyed to the second position without disengagement.
  • An air conditioning indoor unit is the air conditioning indoor unit according to the fourth aspect, in which a first panel conveyance mechanism is disposed at the indoor unit body and the lock mechanism is disposed at the first panel.
  • An air conditioning indoor unit is the air conditioning indoor unit according to the fourth or fifth aspect, in which the panel conveyance mechanism further includes a top coupling portion coupled to a top of the first panel.
  • the first panel When the lower portion of the first panel located at the second position and the lower coupling portion are in the uncoupled state, the first panel can turn about the top coupling portion in the air conditioning indoor unit.
  • An air conditioning indoor unit is the air conditioning indoor unit according to any of the preceding aspects, in which the first panel is configured to execute the second motion to shift to the maintenance position from a position with the upper end being not in contact with a bottom of the second panel.
  • the air conditioning indoor unit prevents interference between the upper end of the first panel and a lower end of the second panel.
  • the air conditioning indoor unit prevents interference between the upper end of the first panel and the indoor unit body by not shifting the first panel to the maintenance position at once but shifting the first panel to the second position distant from the indoor unit body and then shifting the first panel to the maintenance position.
  • the air conditioning indoor unit according to the first aspect of the present invention further prevents interference between the upper end of the first panel and the indoor unit body by shifting the first panel to the second position distant from the indoor unit body and then shifting the first panel to the maintenance position.
  • the air conditioning indoor unit according to the second aspect of the present invention usably allows the user to insert a hand because the lower end of the first panel is distant from the indoor unit body.
  • the user executing maintenance of a filter or the like from the front surface of the indoor unit body in the air conditioning indoor unit according to the third aspect of the present invention looks at the indoor unit body from obliquely below. Maintenance work is facilitated when the lower end of the first panel is more distant from the indoor unit body than the upper end.
  • the panel conveyance mechanism in the air conditioning indoor unit causes the first panel to always pass the second position, to prevent the user from shifting the first panel to an erroneous position.
  • the user When the user manually conveys the first panel in the air conditioning indoor unit according to the fourth or fifth aspect of the present invention, the user grips the both ends of the first panel and pulls the first panel toward the user, which may separate the first panel from the panel conveyance mechanism. Provision of the lock mechanism allows the first panel to be conveyed to the second position without disengagement.
  • the first panel can turn about the top coupling portion in the air conditioning indoor unit according to the sixth aspect of the present invention.
  • the air conditioning indoor unit according to the seventh aspect of the present invention prevents interference between the upper end of the first panel and the lower end of the second panel.
  • FIG. 1A is a perspective view of an air conditioning indoor unit 1 not in operation.
  • FIG. 1B is a perspective view of the air conditioning indoor unit 1 in preparation for operation.
  • FIG. 2A is a side view of the air conditioning indoor unit 1 not in operation.
  • FIG. 2B is a side view of the air conditioning indoor unit 1 in preparation for operation.
  • FIG. 3 is a perspective view of the air conditioning indoor unit 1 in operation.
  • the air conditioning indoor unit 1 depicted in FIG. 1A, FIG. 1B , FIG. 2A, FIG. 2B , and FIG. 3 is of a wall-hung type, and includes an indoor unit body 10 and a front panel 11 covering a front surface of the indoor unit body 10.
  • the air conditioning indoor unit 1 not in operation includes a blow-out port 5 having a front end entirely covered with a first panel 111 and a lower end entirely covered with a first airflow direction adjusting blade 30. This configuration does not allow the interior of the indoor unit body 10 to be visible via the blow-out port 5 to achieve excellent design.
  • the first panel 111 in the front panel 11 shifts forward an upward to be disposed in front of a second panel 112 before the air conditioning indoor unit 1 starts operation, to allow the blow-out port 5 to be opened forward.
  • the first airflow direction adjusting blade 30 positioned at the bottom of the indoor unit body 10 subsequently turns clockwise by 180 degrees to open the lower end of the blow-out port 5.
  • FIG. 4 is a longitudinal sectional view of the air conditioning indoor unit 1 not in operation.
  • FIG. 5 is a longitudinal sectional view of the air conditioning indoor unit 1 in preparation for operation.
  • FIG. 6 is a longitudinal sectional view of the air conditioning indoor unit 1 in operation.
  • the indoor unit body 10 includes a body casing 100 constituting an outer contour, as well as the first airflow direction adjusting blade 30, a second airflow direction adjusting blade 40, and a perpendicular airflow direction adjusting blade 50 that are configured to adjust a blow-out direction of conditioned air.
  • the body casing 100 accommodates an indoor heat exchanger 12, a fan 13, and a frame 16.
  • the body casing 100 has a front surface 101, an upper surface 102, and a lower surface 103, which form a substantially rectangular parallelepiped space accommodating the indoor heat exchanger 12, the fan 13, the frame 16, and a filter 9.
  • the upper surface 102 is provided with an upper blow-in port 4A (see FIG. 10 ) including a plurality of slits.
  • the blow-out port 5 extends from a lower portion of the front surface 101 to a front portion of the lower surface 103.
  • the front surface 101 further includes a front blow-in port 4B disposed above the blow-out port 5.
  • the indoor heat exchanger 12 and the fan 13 are attached to the frame 16.
  • the indoor heat exchanger 12 exchanges heat with passing air.
  • the fan 13 causes air introduced via the upper blow-in port 4A and the front blow-in port 4B to reach and pass through the indoor heat exchanger 12 and then blow out of the blow-out port 5.
  • the blow-out port 5 is provided with the first airflow direction adjusting blade 30 and the second airflow direction adjusting blade 40 configured to guide blow-out air in a vertical direction.
  • the first airflow direction adjusting blade 30 is driven by a motor (not depicted) and is configured to change an air blow-out direction as well as open and close the blow-out port 5 adjacent to the lower surface 103.
  • the perpendicular airflow direction adjusting blade 50 is provided upstream of the first airflow direction adjusting blade 30 and the second airflow direction adjusting blade 40, and is configured to guide air in a lateral direction.
  • the filter 9 is disposed between the indoor heat exchanger 12 and the front surface 101 as well as the upper surface 102 of the body casing 100.
  • the filter 9 removes dust contained in air flowing in toward the indoor heat exchanger 12.
  • the fan 13 operates to cause indoor air to flow via the upper blow-in port 4A, the front blow-in port 4B, the filter 9, and the indoor heat exchanger 12, be sucked into the fan 13, and then blow out of the blow-out port 5 via a blow-out flow path 18.
  • the first airflow direction adjusting blade 30 is positioned still to cover the lower end of the blow-out port 5 when the air conditioning indoor unit is not in operation. Such a position of the first airflow direction adjusting blade 30 will be called an initial position SP (see FIG. 4 and FIG. 5 ).
  • the first airflow direction adjusting blade 30 located at the initial position SP has a lower surface that is constantly visible while the air conditioning indoor unit is not in operation and is thus finished to have excellent appearance.
  • the lower surface will be called a decorative surface 30a.
  • the blow-out port 5 has an inner surface that is directed downward and is followed by blow-out air when the air conditioning indoor unit is in operation.
  • the inner surface will be called a Coanda surface 30b.
  • the first airflow direction adjusting blade 30 is turned by a motor (not depicted).
  • the first airflow direction adjusting blade 30 has a shaft (not depicted) positioned above the front end of the first airflow direction adjusting blade 30 located at the initial position SP by about a half of a height of the blow-out port 5.
  • the first airflow direction adjusting blade 30 rotated clockwise by 180 degrees projects forward from the upper end of the blow-out port 5 with the decorative surface 30a directed being upward and the Coanda surface 30b being directed downward.
  • the first airflow direction adjusting blade 30 will be described in detail later in a section "(5) Detailed description of first airflow direction adjusting blade 30".
  • the second airflow direction adjusting blade 40 is positioned upstream of the blow-out port 5 and above the initial position SP of the first airflow direction adjusting blade 30 when the air conditioning indoor unit is not in operation.
  • the second airflow direction adjusting blade 40 has an arc sectional shape having a convex surface 40a directed downward and a concave surface 40b directed upward during cooling operation.
  • the second airflow direction adjusting blade 40 may be postured to have the convex surface 40a directed upward and the concave surface 40b directed downward.
  • the second airflow direction adjusting blade 40 is turned by a motor (not depicted).
  • the second airflow direction adjusting blade 40 has a shaft (not depicted) positioned above the concave surface 40b.
  • the second airflow direction adjusting blade 40 will be described in detail later in a section "(6) Detailed description of second airflow direction adjusting blade 40".
  • the perpendicular airflow direction adjusting blade 50 includes a plurality of blade pieces 501 and a coupling rod 503 coupling the plurality of blade pieces 501.
  • the perpendicular airflow direction adjusting blade 50 is positioned closer to the fan 13 in comparison to the first airflow direction adjusting blade 30 and the second airflow direction adjusting blade 40.
  • the coupling rod 503 horizontally reciprocates in the longitudinal direction of the blow-out port 5
  • the plurality of blade pieces 501 laterally swings from a state perpendicular to the longitudinal direction.
  • the coupling rod 503 is horizontally reciprocated by a motor (not depicted).
  • the front panel 11 covers the front surface of the indoor unit body 10.
  • the front panel 11 is divided into upper and lower portions, and includes the first panel 111 as the lower portion and the second panel 112 positioned above the first panel 111.
  • the first panel 111 and the second panel 112 constitute a design surface of the air conditioning indoor unit 1, and are similar to each other in pattern, color, or combination thereof.
  • the first panel 111 has different positioning between the case where the air conditioning indoor unit 1 is not in operation and the case where the air conditioning indoor unit 1 is in operation.
  • the first panel 111 and the second panel 112 have surfaces vertically aligned on an identical vertical plane to be beautifully integrated to each other and achieve excellent appearance.
  • the first panel 111 is set to be vertically longer than the second panel 112 in a front view.
  • the second panel 112 has a vertical length set to be equal to a height of the front end of the blow-out port 5.
  • the first panel 111 and the blow-out port 5 have lower ends adjacent to each other as if the lower ends seem to be leveled in a front view.
  • the second panel 112 and the front surface 101 of the body casing 100 have upper ends adj acent to each other as if the upper ends seem to be leveled in a front view.
  • a panel conveyance mechanism 21 shifts forward and upward simultaneously the first panel 111 and shifts the first panel 111 until the upper end of the first panel 111 is leveled with the upper end of the second panel 112 in a front view.
  • the front end of the blow-out port 5 is thus opened, and the front blow-in port 4B and the first panel 111 form a space for air introduction.
  • the front panel 11 does not project upward from a top surface of the indoor unit body 10 when the air conditioning indoor unit is in operation without change in size of a product between the case where the air conditioning indoor unit is in operation and the case where the air conditioning indoor unit is not in operation in a front view.
  • the upper end of the first panel 111 and the upper end of the second panel 112 do not need to be completely leveled in a front view, and have only to be adjacent to each other so as to seem to be leveled in the front view.
  • the upper end of the first panel 111 can thus project slightly from the upper end of the second panel 112 in the front view.
  • the upper end of a side surface 111a of the first panel 111 and the lower end of a side surface 112a of the second panel 112 face each other and are inclined forward and upward. Even when the first panel 111 shifts forward and upward simultaneously, the upper end of the side surface 111a of the first panel 111 and the lower end of the side surface 112a of the second panel 112 will not interfere with each other.
  • the panel conveyance mechanism 21 is configured to cause the first panel 111 to shift forward and upward simultaneously, in other words, shift obliquely upward.
  • first panel 111 closes the front end of the blow-out port 5 at a close position CP (see FIG. 2A ), and that the first panel 111 shifts vertically to have the upper end leveled with the upper end of the second panel 112 in a front view and opens the front end of the blow-out port 5 at an open position OP (see FIG. 2B ).
  • FIG. 7 is a longitudinal sectional view of the panel conveyance mechanism 21.
  • FIG. 11A and FIG. 11B are perspective views of a panel support mechanism 24 before and after a support 25 operates, and these figures also depicting the panel conveyance mechanism 21 will be referred to.
  • the panel conveyance mechanism 21 is obtained by applying a parallel crank mechanism.
  • the panel conveyance mechanism 21 includes a first crank 211, a second crank 212, a movable link 213, and a fixed link 214.
  • the first crank 211 is a resin member and has each end molded into a columnar or a tubular shape so as to serve as a shaft. There is provided a first shaft 211a positioned adjacent to the first panel 111 and rotatably retained by an upper end bearing 213a of the movable link 213. As depicted in FIG. 11A , the first shaft 211a according to the present embodiment is formed into a columnar projection.
  • a second shaft 211b positioned adjacent to the indoor unit body 10 and coupled to an output shaft of a motor (not depicted). As depicted in FIG. 7 , the second shaft 211b is provided behind the second panel 112.
  • the output shaft of the motor according to the present embodiment receives a resin rod having a quadrilateral section, and the second shaft 211b has a center provided with a quadrilateral hole receiving the resin rod.
  • the first crank 211 includes a curved portion 211c.
  • the curved portion 211c connects the first shaft 211a and the second shaft 211b, and extends to be distant obliquely downward from a virtual line (two-dot chain line KL) connecting the center of the first shaft 211a and the center of the second shaft 211b to have a minimum distance and is then curved to extend toward the virtual line.
  • KL two-dot chain line
  • the first crank 211 When the first panel 111 is lifted upward to have the first shaft 211a positioned in front of the second panel 112, the first crank 211 approaches the lower end of the second panel 112.
  • the curved portion 211c curves to avoid the lower end of the second panel 112 so as to prevent interference between the first crank 211 and the lower end of the second panel 112.
  • the second crank 212 is a resin member and has each end molded into a columnar or a tubular shape so as to serve as a shaft. There is provided a first shaft 212a positioned adj acent to the first panel 111 and rotatably retained by a lower end bearing 213b of the movable link 213. As depicted in FIG. 11A , the first shaft 212a according to the present embodiment is formed into a columnar projection.
  • a second shaft 212b positioned adjacent to the indoor unit body 10 and rotatably retained by the lower end of the fixed link 214. As depicted in FIG. 7 , the second shaft 212b according to the present embodiment is formed into a columnar projection.
  • the movable link 213 is an elongated resin member and is fixed in a vertical posture to the rear surface of the first panel 111.
  • the movable link 213 has upper and lower ends each constituting a bearing. The upper end serves as the upper end bearing 213a receiving the first shaft 211a of the first crank 211, whereas the lower end serves as the lower end bearing 213b receiving the first shaft 212a of the second crank 212.
  • the upper end bearing 213a has a bearing hole receiving the columnar projection of the first shaft 211a of the first crank 211.
  • the lower end bearing 213b has a bearing hole receiving the columnar projection of the first shaft 212a of the second crank 212.
  • the fixed link 214 is located adjacent to the indoor unit body 10, and does not need to have a specific shape but has only to be provided with at least a bearing for the second shaft 211b of the first crank 211 and a bearing for the second shaft 212b of the second crank 212.
  • the second shaft 211b of the first crank 211 is supported by the output shaft of the motor whereas the second shaft 212b of the second crank 212 is supported by a bearing 214b positioned below and distant by a predetermined length from the output shaft of the motor.
  • the first crank 211 turns clockwise.
  • the first shaft 211a of the first crank 211 draws an arc around the second shaft 211b and lifts the movable link 213 upward.
  • the first crank 211 stops turning at a position where the virtual line connecting the first shaft 211a and the second shaft 211b is inclined upward by about 5 degrees from a horizontal direction. Such a stop position will be called a maximally turned position Rm of the first crank 211 (see FIG. 5 and FIG. 6 ).
  • the first shaft 211a of the first crank 211 and the upper end bearing 213a of the movable link 213 are rotatably connected to each other.
  • the lower end bearing 213b of the movable link 213 and the first shaft 212a of the second crank 212 are rotatably connected to each other.
  • the bearing 214b of the fixed link 214 and the second shaft 212b of the second crank 212 are rotatably connected to each other.
  • the movable link 213 lifted upward keeps the vertical posture and shifts upward to be distant from the indoor unit body 10.
  • the "virtual line connecting the first shaft 211a and the second shaft 211b" of the first crank 211 and a “virtual line connecting the first shaft 212a and the second shaft 212b" of the second crank 212 are substantially parallel to each other, and a "virtual line connecting the upper end bearing 213a and the lower end bearing 213b" of the movable link 213 and a “virtual line connecting the output shaft of the motor and the bearing 214b" of the fixed link 214 are substantially parallel to each other, so that these four virtual lines form a substantial parallelogram.
  • the first crank 211 serves as a driver and rotates
  • the first panel 111 fixed to the movable link 213 can ascend or descend while being kept in parallel with the fixed link 214.
  • the first crank 211 reaches the maximally turned position Rm
  • the first panel 111 is positioned in front of the second panel 112 and the upper ends of the first panel 111 and the second panel 112 are leveled in a front view.
  • the first panel 111 is set to be vertically longer than the second panel 112 in a front view.
  • the first panel 111 ascends to have the upper end leveled with the upper end of the second panel 112 in a front view, the first panel 111 covers the second panel 112 so that there seems to be a single panel.
  • the vertical length of the second panel 112 is equal to the height of the front end of the blow-out port 5. As depicted in FIG. 2B , when the first panel 111 ascends to reach the position (open position OP) where the upper end of the first panel 111 is leveled with the upper end of the second panel 112 in a front view, the front end of the blow-out port 5 is opened completely.
  • the first panel 111 may be conveyed from the open position OP to the close position CP by turning counterclockwise the first crank 211 of the panel conveyance mechanism 21 depicted in FIG. 5 .
  • the panel conveyance mechanism 21 operates when air conditioning indoor unit is in operation as well as upon maintenance such as cleaning of the filter 9. Upon maintenance such as cleaning of the filter 9, a user needs to turn the first panel 111 to cause the lower end of the first panel 111 to be distant from the indoor unit body 10 so as to open the front surface of the indoor unit body 10.
  • the first panel 111 turned at the close position CP causes interference between the upper end of the side surface 111a of the first panel 111 and the lower end of the side surface 112a of the second panel 112 to generate squeak sound and damage to the first panel 111 and the second panel 112.
  • the first panel 111 is conveyed to the open position OP in the present embodiment.
  • the upper end of the side surface 111a of the first panel 111 and the lower end of the side surface 112a of the second panel 112 are distant from each other at the open position OP.
  • Turn of the first panel 111 will not cause interference between the upper end of the side surface 111a of the first panel 111 and the lower end of the side surface 112a of the second panel 112 to prevent generation of squeak sound and damage to the first panel 111 and the second panel 112.
  • the user can manually convey the first panel 111 from the close position CP to the open position OP.
  • the panel conveyance mechanism 21 is connected to the motor and such work is a burden of the user, so that the first panel 111 is preferably conveyed by the panel conveyance mechanism 21.
  • the panel conveyance mechanism 21 operates when an operation button 81 or a maintenance preparation button 83 preliminarily provided at a remote control device (see FIG. 3 , hereinafter called a remote controller 80) of the air conditioning indoor unit 1 is turned ON.
  • a remote control device see FIG. 3 , hereinafter called a remote controller 80
  • the user Upon maintenance, the user initially turns ON the maintenance preparation button 83 to cause the panel conveyance mechanism 21 to shift the first panel 111 to the open position OP.
  • the rear surface of the first panel 111 and the movable link 213 of the panel conveyance mechanism 21 thus interpose a hinge mechanism 22, a lock mechanism 23, and the panel support mechanism 24.
  • the hinge mechanism 22 is configured to turn the first panel 111 about the upper end bearing 213a of the movable link 213 in order to open the front surface of the indoor unit body 10 (see FIG. 8 ).
  • the hinge mechanism 22 is provided on the rear surface of the first panel 111 and retains the upper end bearing 213a of the movable link 213.
  • the hinge mechanism 22 may alternatively be constituted by a shaft fitted to the upper end bearing 213a of the movable link 213 by snap fitting.
  • the first panel 111 When the lower end of the first panel 111 is shifted to be distant from the indoor unit body 10, the first panel 111 turns about the upper end bearing 213a of the movable link 213.
  • FIG. 8 is a perspective view of the lock mechanism 23 disposed on the rear surface of the first panel 111.
  • FIG. 9A is an enlarged perspective view of the lock mechanism 23 between the first panel 111 and the movable link 213.
  • FIG. 9B is an enlarged perspective view depicting an unlocking state of the lock mechanism 23 in FIG. 9A .
  • the first panel 111 has a portion facing the lower end bearing 213b of the movable link 213 and provided with the lock mechanism 23 configured to restrain the lower end bearing 213b of the movable link 213.
  • the lock mechanism 23 includes a claw 231, a spring 232, and a grip 233.
  • the claw 231, the spring 232, and the grip 233 are made of same resin and is molded integrally in the present embodiment.
  • the claw 231 slides along the rear surface of the first panel 111.
  • the claw 231 has a claw tip 231a typically inserted to a hole 213h provided in a lower portion of the lower end bearing 213b of the movable link 213 to prevent the lower end bearing 213b from being distant from the rear surface of the first panel 111.
  • the spring 232 biases upward the claw 231 such that the claw tip 231a of the claw 231 is not distant from the hole 213h provided in the lower portion of the lower end bearing 213b of the movable link 213.
  • the spring 232 is made of resin and is molded into an arc beam shape.
  • the spring 232 has a first end that is retained by the rear surface of the first panel 111 and will be called a free end 232a.
  • the spring 232 has a second end that is fixed to the claw 231 and will be called a fixed end 232b.
  • the claw 231 and the spring 232 provide a lock function of the lock mechanism 23 in the present embodiment.
  • the grip 233 is hooked by a finger of the user and is connected to the lower end of the claw 231.
  • the rear surface of the first panel 111 located at the open position OP and the indoor unit body 10 form a gap therebetween allowing entry of a hand of the user.
  • the claw 231 is descended and the claw tip 231a exits the hole 213h provided in the lower portion of the lower end bearing 213b of the movable link 213, so that the first panel 111 and the lower end bearing 213b of the movable link 213 become separable from each other.
  • the grip 233 provides an unlock function of the lock mechanism 23 in the present embodiment.
  • FIG. 10 is a partial perspective view of the air conditioning indoor unit 1 in a case where the first panel 111 is located at a maintenance position.
  • a maintenance position MP a position where the front surface of the indoor unit body 10 is opened
  • the first panel 111 needs to be retained at the maintenance position MP to allow the user to execute work with both hands.
  • the panel support mechanism 24 is configured to retain the first panel 111 at the maintenance position MP. As depicted in FIG. 10 , the panel support mechanism 24 includes a shaft 24a provided on the movable link 213 of the panel conveyance mechanism 21, and the support 25 turnably supported by the shaft 24a.
  • FIG. 11A is a perspective view of the panel support mechanism 24 before the support 25 operates.
  • FIG. 11B is a perspective view of the panel support mechanism 24 after the support 25 operates.
  • FIG. 12 is a front view of the panel support mechanism 24 before the support 25 operates.
  • the shaft 24a has a pin shape projecting outward from the both side surfaces of the movable link 213.
  • the shaft 24a is provided within a section 213c connecting the upper end bearing 213a and the lower end bearing 213b of the movable link 213, between the center of the section 213c and the lower end bearing 213b.
  • the support 25 has an elongated shape having a section perpendicular to the longitudinal direction and recessed into a cornered U shape.
  • the support 25 has an end provided with a shaft hole 25a receiving the shaft 24a.
  • the end of the support 25 provided with the shaft hole 25a will be called a first end 251 and another end will be called a second end 252.
  • the support 25 is turnable relatively to the movable link 213.
  • part of the section 213c of the movable link 213 is fitted to a recessed portion of the support 25, and the support 25 and the movable link 213 are overlapped with each other, so that the support 25 cannot be pushed any further.
  • the support 25 stops being pushed to come closer to the movable link 213, the support 25 turns to be distant from the movable link 213.
  • the support 25 has a center of gravity 25g positioned above and ahead (to be distant from the movable link 213) of the shaft 24a, and thus naturally turns to be distant from the movable link 213 unless being restrained.
  • the first end 251 has an end surface including an arc surface 251a having a central angle of 100 degrees around the shaft hole 25a and an inclined surface 251b projecting in the longitudinal direction of the support 25 from the arc surface 251a.
  • the movable link 213 has a proceed blocking surface 213d shifted in a turning direction from the inclined surface 251b by 60 degrees and facing the inclined surface 251b.
  • the support 25 is interposed between the rear surface of the first panel 111 and the section 213c of the movable link 213 and thus stays still.
  • the hinge mechanism 22 causes the first panel 111 to turn about the upper end bearing 213a of the movable link 213.
  • the support 25 simultaneously starts turning about the shaft 24a to follow the first panel 111.
  • the support 25 turns by 60 degrees to be distant from the movable link 213 and the inclined surface 251b touches the proceed blocking surface 213d to stop turn of the support 25.
  • the second end 252 of the support 25 supports the rear surface of the first panel 111 to stop the first panel 111 at the maintenance position MP and open the front surface of the indoor unit body 10.
  • the support 25 is temporarily lifted upward and the first panel 111 is then pushed with a hand, so that the second end 252 of the support 25 slides on the rear surface of the first panel 111 to approach the movable link 213 of the panel conveyance mechanism 21.
  • the part of the section 213c of the movable link 213 is fitted to the recessed portion of the support 25 and the support 25 and the movable link 213 are overlapped with each other, so that the support 25 cannot be pushed any further.
  • the first panel 111 returns to the vertical posture at this point.
  • the second end 252 is not located at a body end 25b of the support 25, but temporarily rises backward from a left side surface of the body end 25b of the support 25 in a front view in FIG. 12 , is then bent leftward, and extends along a sheet surface (vertically).
  • the second end 252 is closer to the indoor unit body 10 in comparison to the body end 25b.
  • the second end 252 deviates from the body end 25b of the support 25 as described above. Even if a buckling load is applied from the tip of the second end 252, the second end 252 warps to generate force shifting the body end 25b toward the indoor unit body 10.
  • the support 25 inevitably has a moment toward the indoor unit body 10 in this case.
  • the support 25 of the panel support mechanism 24 is accommodated to be overlapped with the movable link 213 of the panel conveyance mechanism 21 when the first panel 111 has the vertical posture at the close position CP and the open position OP, and descends by its own weight to support the first panel 111 when the first panel 111 has the inclined posture at the maintenance position MP
  • the panel support mechanism 24 is also applicable to an air conditioning indoor unit including a front panel (including a front grille) configured not to be driven and be turned forward for maintenance of a filter, such as a floorstanding air conditioning indoor unit.
  • the present embodiment exemplifies the first panel 111 in the inclined posture at the maintenance position MP being supported by the support 25 that is shifted downward by its own weight from the movable link 213.
  • the present invention should not be limited to such a configuration.
  • the support 25 may be turnably retained by the rear surface of the first panel 111 and may be configured to be shifted downward by its own weight from the first panel 111 and touch the movable link 213 to be stopped when the first panel 111 is inclined.
  • FIG. 13A is a perspective view of the first airflow direction adjusting blade 30 not in operation.
  • FIG. 13B is a perspective view of the first airflow direction adjusting blade 30 in operation.
  • FIG. 14A is a sectional view taken along line X-X indicated in FIG. 13A .
  • the first airflow direction adjusting blade 30 includes a heat insulator 31 made of expanded polystyrene and interposed between a first blade member 321 constituting the decorative surface 30a and a second blade member 322 constituting the Coanda surface 30b.
  • the first blade member 321 and the second blade member 322 will be collectively called a "blade member 32".
  • the first airflow direction adjusting blade 30 is configured to adjust an airflow direction of blow-out air from the blow-out port 5 via the blow-out flow path 18. As depicted in FIG. 4 , the first airflow direction adjusting blade 30 covers the lower end of the blow-out port 5 with the decorative surface 30a being directed just downward when the air conditioning indoor unit 1 is in an operation stop state.
  • the first airflow direction adjusting blade 30 rotates by 180 degrees about a shaft 30c when the air conditioning indoor unit 1 starts operation.
  • the first airflow direction adjusting blade 30 reaches the upper end of the blow-out port 5 (see FIG. 14A ) in this case.
  • the first airflow direction adjusting blade 30 inevitably turns after the first panel 111 operates or in a manner of chasing the operation of the first panel 111.
  • the first airflow direction adjusting blade 30 stays still at the maximum open position MOP with the decorative surface 30a being directed upward and the Coanda surface 30b being directed downward.
  • the front blow-in port 4B of the indoor unit body 10 is located above the decorative surface 30a and indoor air is sucked therethrough.
  • the blow-out port 5 is located below the Coanda surface 30b and cool air blows out.
  • the blow-out port 5 has an upper wall forming a slight gap from the decorative surface 30a to allow indoor air to easily enter.
  • the second blade member 322 constituting the Coanda surface 30b is cooled by cool air during cooling operation, and the first blade member 321 constituting the decorative surface 30a is also cooled due to heat transfer, so that the decorative surface 30a has dew condensation.
  • Heat transfer in the thickness direction of the first airflow direction adjusting blade 30 is inhibited by the expanded polystyrene constituting the heat insulator 31. Accordingly, the first blade member 321 is cooled due to internal heat conduction of the first blade member 321 and the second blade member 322.
  • Cool air flows along the Coanda surface 30b of the first airflow direction adjusting blade 30 located at the maximum open position MOP.
  • the cool air separates from the Coanda surface 30b at a distal end having change in arc curvature. Indoor air is caught by an eddy formed after separation and comes into contact with the first airflow direction adjusting blade 30 to form dew condensation.
  • the first airflow direction adjusting blade 30 is provided with concave portions 33 formed by reducing a thickness of the second blade member 322.
  • the concave portions 33 are provided at both ends of the first airflow direction adjusting blade 30, and includes a first concave portion 331 and a second concave portion 332.
  • the first concave portion 331 is positioned within a range of 20% of a lateral width of the first airflow direction adjusting blade 30, downstream of an upstream end 30up of the first airflow direction adjusting blade 30 in the flow of blow-out air.
  • the second concave portion 332 is positioned within a range of 20% of the lateral width of the first airflow direction adjusting blade 30 and upstream of a downstream end 30dp of the first airflow direction adjusting blade 30 in the flow of blow-out air.
  • FIG. 14B is an enlarged sectional view of the first concave portion 331.
  • FIG. 14C is an enlarged sectional view of the second concave portion 332.
  • the first concave portion 331 and the second concave portion 332 are formed by reducing the thickness of the second blade member 322 by 35% to 60%.
  • the first concave portion 331 and the second concave portion 332 have a minimum thickness t set within a range from 40% to 65% of the thickness of the second blade member 322 excluding the first concave portion 331 and the second concave portion 332.
  • the minimum thickness of the first concave portion 331 and the second concave portion 332 seems to be preferably as small as possible.
  • the second blade member 322 according to the present embodiment is produced by resin injection molding, so that the minimum thickness is set within the range from 40% to 65% of the thickness of the second blade member 322 as a thickness allowing molten resin to reliably flow into a mold.
  • the first concave portion 331 and the second concave portion 332 each have a bottom having a rear surface supported by the expanded polystyrene constituting the heat insulator 31 and having no deterioration in strength.
  • the first concave portion 331 and the second concave portion 332 each have a concave width set to include a concave bottom width w1 sized correspondingly to 40% to 65% of the thickness of the second blade member 322 and a concave entrance w2 sized correspondingly to 100% to 200% of the thickness of the second blade member 322, and the concave width is preferably set within a range from 0.6 mm to 2.4 mm.
  • Heat transferred through the second blade member 322 is blocked by the portions having the minimum thickness of the first concave portion 331 and the second concave portion 332, to inhibit temperature decrease in sections from the first concave portion 331 and the second concave portion 332 to the first blade member 321. This also inhibits temperature decrease at a portion in contact with warm indoor air to inhibit dew condensation.
  • the first concave portion 331 and the second concave portion 332 are not limited in terms of their numbers. It is preferred to provide two first concave portions 331 and one second concave portion 332 in view of the fact that a portion upstream of the flow of blow-out air tends to be cooled.
  • Some air conditioning indoor unit has a plurality of grooves at a portion hit by not blow-out air but indoor air. These grooves are provided to hold condensate to be evaporated by wind, and are completely different from the first concave portion 331 and the second concave portion 332 provided for reduction of heat transfer to a start point and an end point hit by cool air where the cool air and warm air separate from each other.
  • dew condensation is formed by cooled indoor air entering the gap between the upper wall of the blow-out port 5 and the decorative surface 30a as well as indoor air caught by the eddy formed after separation of cool air flowing along the Coanda surface 30b of the first airflow direction adjusting blade 30.
  • the perpendicular airflow direction adjusting blade 50 may cause cool air flowing along the Coanda surface 30b of the first airflow direction adjusting blade 30 located at the maximum open position MOP (see FIG. 6 ) to hit a side wall out of walls constituting the blow-out port 5 to turn onto the decorative surface 30a.
  • the decorative surface 30a of the first airflow direction adjusting blade 30 located at the maximum open position MOP and the upper wall out of the walls constituting the blow-out port 5 form the gap having negative pressure that will cause cool air to flow upward to the decorative surface 30a, and dew condensation is formed in this case.
  • the second blade member 322 has a lateral end in the longitudinal direction provided with a wall 34 rising in the thickness direction.
  • the perpendicular airflow direction adjusting blade 50 causes air to flow leftward and rightward, cool air flowing obliquely across the Coanda surface 30b of the first airflow direction adjusting blade 30 hits the wall 34 and flows below the side wall of the blow-out port 5, in which case there is generated no flow turning onto the decorative surface 30a of the first airflow direction adjusting blade 30.
  • This configuration inhibits dew condensation.
  • the second airflow direction adjusting blade 40 is positioned behind the first panel 111 located at the close position CP and above the first airflow direction adjusting blade 30 located at the initial position SP so as to be invisible.
  • the first panel 111 shifts to the open position OP to open the front end of the blow-out port 5 and the first airflow direction adjusting blade 30 turns to be positioned above the second airflow direction adjusting blade 40 to open the lower end of the blow-out port 5 to expose the second airflow direction adjusting blade 40 via the blow-out port 5.
  • FIG. 15 is a longitudinal sectional view of the air conditioning indoor unit 1, indicating an inclination angle of the second airflow direction adjusting blade 40.
  • the second airflow direction adjusting blade 40 has the convex surface 40a directed downward and the concave surface 40b directed upward. Cool air flowing along the upper concave surface 40b thus flows upward toward the first airflow direction adjusting blade 30. Such a flow along the concave surface 40b will be called a main airflow.
  • Cool air flowing along the lower convex surface 40a keeps flowing along the convex surface 40a in parallel with the main airflow if the angle (hereinafter, referred to as an "inclination angle ⁇ ") of the second airflow direction adjusting blade 40 is within a predetermined angle range.
  • the inclination angle ⁇ of the second airflow direction adjusting blade 40 indicates an angle of a virtual line BL including a frontmost end and a rearmost end of the second airflow direction adjusting blade 40 relative to a tangent line TL at a terminal end of a scroll 17.
  • Cool air flowing along the convex surface 40a separates immediately after having passed a vertex of the convex surface 40a, or at the center of a section connecting the vertex and a downstream-side end of the convex surface 40a. Indoor air higher in temperature than the cool air not flowing along the convex surface 40a any more enters to form dew condensation.
  • a section connecting a deepest point and a downstream-side end of the concave surface 40b will be called a concave second half section 40bb
  • a section connecting the vertex and the downstream-side end of the convex surface 40a will be called a convex second half section 40ab.
  • the applicant has tested to find that, when the perpendicular airflow direction adjusting blade 50 according to the present embodiment swings to the left or to the right, the convex second half section 40ab at each end of the second airflow direction adjusting blade 40 is likely to have dew condensation.
  • cool air does not separate in the convex second half section 40ab and the second airflow direction adjusting blade 40 is entirely surrounded with cool air unless the inclination angle ⁇ of the second airflow direction adjusting blade 40 does not exceed the predetermined angle, to prevent dew condensation at the second airflow direction adjusting blade 40.
  • the temperature Tb of blow-out air needs to be increased to a range from 14°C to 16°C for increase in dewpoint temperature, which narrows parameter flexibility.
  • the applicant aims to expand the range of the inclination angle ⁇ of the second airflow direction adjusting blade 40 as well as inhibit dew condensation.
  • cool air flowing along the convex surface 40a needs to flow without separating in the convex second half section 40ab.
  • the second airflow direction adjusting blade 40 In order to cause cool air to flow without separating in the convex second half section 40ab of the convex surface 40a, the second airflow direction adjusting blade 40 according to the present embodiment has a longitudinal end provided with a through hole 43 passing in the thickness direction of the second airflow direction adjusting blade 40.
  • the through hole 43 will be described below with reference to the drawings.
  • FIG. 16A is a perspective view of the second airflow direction adjusting blade 40.
  • FIG. 16B is a sectional view taken along line Y-Y indicated in FIG. 16A .
  • the through hole 43 is provided to cause cool air flowing along the concave second half section 40bb of the concave surface 40b to flow to the convex second half section 40ab of the convex surface 40a (see dotted arrows indicated in FIG. 16B ).
  • the through hole 43 has an opening 43b provided in the concave second half section 40bb is positioned upstream of an opening 43a provided in the convex second half section 40ab.
  • the through hole 43 thus extends forward and downward in an obliquely downward direction.
  • Provision of the through hole 43 causes part of cool air flowing along the concave surface 40b to pass through the through hole 43, flow out to the convex second half section 40ab, and flow toward the downstream-side end. This attracts cool air originally having flown along the convex second half section 40ab so as not to separate.
  • the through hole 43 is a long hole extending in the longitudinal direction of the second airflow direction adjusting blade 40.
  • the through hole 43 is at least partially located in a section from a region where a virtual plane including a vertical plane 50a of the blade piece 501 located at a farthest end opposite to a swing direction of the perpendicular airflow direction adjusting blade 50 located at a maximum swung position in actual use crosses the second airflow direction adjusting blade 40 to the closest end, to the region, of the second airflow direction adjusting blade 40.
  • the through hole 43 extends in a range of 20% of the entire longitudinal length from each end.
  • air has a weak flow in a section on the right of the region where the virtual plane including the vertical plane 50a of the rightmost blade piece 501 crosses the second airflow direction adjusting blade 40 (e.g. a range of 80 mm from the right end), and the airflow is likely separate from the convex surface 40a of the second airflow direction adjusting blade 40 and is likely to come into contact with indoor air to form dew condensation.
  • cool air having passed through the through hole 43 flows along the convex second half section 40ab of the convex surface 40a to attract cool air flowing from an upstream portion toward the convex second half section 40ab and prevent separation from the convex second half section 40ab. This prevents indoor air from contacting the second airflow direction adjusting blade 40 for inhibition of dew condensation.
  • the through hole 43 is provided as described above to inhibit dew condensation.
  • the applicant thus researched to find that dew condensation is inhibited when the inclination angle ⁇ of the second airflow direction adjusting blade 40 is within a range from 0 degrees to 32 degrees while the temperature Tb of blow-out air is within the range from 12°C to 13°C.
  • the through hole 43 is not necessarily the long hole, but may alternatively include a plurality of round holes provided continuously in one direction, or a plurality of "long holes shorter than the long hole according to the above embodiment" provided continuously in one direction.
  • the second panel 112 is fixed and only the first panel 111 shifts to be positioned in front of the second panel 112 to open the front surface of the indoor unit body 10.
  • the present invention should not be limited to this configuration, and both the first panel 111 and the second panel 112 may shift to open the front surface of the indoor unit body 10.
  • FIG. 17 is a longitudinal sectional view of an air conditioning indoor unit 1B not in operation according to the modification example.
  • FIG. 18 is a longitudinal sectional view of the air conditioning indoor unit 1B before starting operation, including a panel conveyance mechanism in operation.
  • FIG. 19 is a longitudinal sectional view of the air conditioning indoor unit 1B in operation.
  • the air conditioning indoor unit 1B according to the modification example is different from the air conditioning indoor unit according to the above embodiment in that the air conditioning indoor unit 1B includes a panel conveyance mechanism 21B configured to convey both the first panel 111 and the second panel 112.
  • the panel conveyance mechanism 21B is obtained by adding a convey mechanism for the second panel 112 to the panel conveyance mechanism 21 configured to convey the first panel 111. As depicted in FIG. 18 , the panel conveyance mechanism 21B initially shifts the first panel 111 forward and upward, and shifts the second panel 112 horizontally to be distant from the indoor unit body 10 when the first panel 111 is distant from the indoor unit body 10 by a predetermined distance.
  • the first panel 111 stops after shifting horizontally by a distance D1 and vertically by a distance HI from the indoor unit body 10 as depicted in FIG. 19 .
  • the second panel 112 stops after shifting horizontally from the indoor unit body 10 by a distance D2 shorter than the distance D1.
  • the second panel 112 opens an upper front surface of the indoor unit body 10, and air passes between the upper front surface of the indoor unit body 10 and the second panel 112 to reach the front surface of the indoor unit body 10. This configuration shortens an air blow-in path from the front surface of the indoor unit body 10 to achieve reduction in air resistance.
  • the first panel 111 in the air conditioning indoor unit 1 is retained at the close position CP (see FIG. 2A ) to cover the front surface of the indoor unit body 10, and is retained at the maintenance position MP (see FIG. 10 ) to open the front surface of the indoor unit body 10 upon maintenance.
  • the first panel 111 shifts to the open position OP (see FIG. 2B ) ahead of the close position CP and distant from the indoor unit body 10 upon shifting from the close position CP to the maintenance position MP.
  • the "motion of the first panel 111 from the close position CP to the open position OP" and the "motion of the first panel 111 from the open position OP to the maintenance position MP" are different from each other.
  • the first panel 111 shifts to be distant from the indoor unit body 10 and then shifts to the maintenance position MP, for prevention of interference between the upper end of the first panel 111 and the indoor unit body 10.
  • the air conditioning indoor unit 1 usably allows the user to insert a hand because the lower end of the first panel 111 is distant from the indoor unit body 10.
  • the user executing maintenance of the filter 9 or the like from the front surface of the indoor unit body 10 in the air conditioning indoor unit 1 looks at the indoor unit body 10 from obliquely below. Maintenance work is facilitated when the lower end of the first panel 111 is more distant from the indoor unit body 10 than the upper end.
  • the first panel 111 in the air conditioning indoor unit 1 always stops at the open position OP.
  • the motion of the first panel 111 from the close position CP to the maintenance position MP includes the "motion from the close position CP to the open position OP" and the "motion from the open position OP to the maintenance position MP", which are achieved by mechanisms different from each other, temporary stop at the open position OP facilitates switching from the former mechanism to the latter mechanism.
  • the panel conveyance mechanism 21 in the air conditioning indoor unit 1 guides the first panel 111 to the open position OP, and thus causes the first panel 111 to always pass the second position, to prevent the user from shifting the first panel 111 to an erroneous position.
  • the panel conveyance mechanism 21 automatically conveys the first panel 111 to the open position OP in the air conditioning indoor unit 1, to reduce a burden of the user and achieve excellent usability.
  • Provision of the maintenance preparation button 83 configured to start operation of the panel conveyance mechanism 21 in the air conditioning indoor unit 1 allows the user to recognize that the first panel 111 automatically shifts from the close position CP to the open position OP and urges the user to use.
  • the first panel 111 in the air conditioning indoor unit 1 is restrained so as not to shift relatively to the movable link 213 in the panel conveyance mechanism 21 due to coupling between the claw 231 in the lock mechanism 23 and the hole 213h of the movable link 213 in the panel conveyance mechanism 21 (hereinafter, called the coupled state).
  • the first panel 111 located at the open position OP can shift relatively to the movable link 213 in the panel conveyance mechanism 21 due to uncoupling between the grip 233 in the lock mechanism 23 and the hole 213h of the movable link 213 in the panel conveyance mechanism 21 (hereinafter, called the uncoupled state).
  • the grip 233 is operated, the first panel 111 is conveyed to the open position OP without separating from the panel conveyance mechanism 21 even if the both ends of the first panel 111 are pulled toward the user.
  • the first panel 111 located at the open position OP in the air conditioning indoor unit 1 can turn about the upper end bearing 213a of the movable link 213 in the panel conveyance mechanism 21 when the grip 233 in the lock mechanism 23 and the hole 213h of the movable link 213 in the panel conveyance mechanism 21 are in the uncoupled state.
  • the second panel 112 in the air conditioning indoor unit 1 is positioned above the first panel 111 located at the close position CP and ahead of the indoor unit body 10.
  • the first panel 111 located at the open position OP is positioned ahead of the second panel 112. Shift of the first panel 111 from the open position OP to the maintenance position MP will not cause interference between the upper end of the side surface 111a of the first panel 111 and the lower end of the side surface 112a of the second panel 112.
  • the present invention is useful for a wall-hung air conditioning indoor unit as well as a floorstanding air conditioning indoor unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
EP18861880.5A 2017-09-27 2018-09-27 Air conditioner indoor unit Active EP3690343B1 (en)

Applications Claiming Priority (2)

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JP2017186781A JP6680282B2 (ja) 2017-09-27 2017-09-27 空調室内機
PCT/JP2018/035913 WO2019065832A1 (ja) 2017-09-27 2018-09-27 空調室内機

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EP3690343A1 EP3690343A1 (en) 2020-08-05
EP3690343A4 EP3690343A4 (en) 2020-11-04
EP3690343B1 true EP3690343B1 (en) 2023-01-18

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CN (1) CN111133257B (ja)
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CN111133257A (zh) 2020-05-08
JP6680282B2 (ja) 2020-04-15
JP2019060566A (ja) 2019-04-18
AU2018339379B2 (en) 2021-10-07
AU2018339379A1 (en) 2020-03-26
CN111133257B (zh) 2021-10-26
WO2019065832A1 (ja) 2019-04-04
EP3690343A4 (en) 2020-11-04
EP3690343A1 (en) 2020-08-05

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