WO2021192093A1 - Indoor unit for air conditioner - Google Patents

Indoor unit for air conditioner Download PDF

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Publication number
WO2021192093A1
WO2021192093A1 PCT/JP2020/013337 JP2020013337W WO2021192093A1 WO 2021192093 A1 WO2021192093 A1 WO 2021192093A1 JP 2020013337 W JP2020013337 W JP 2020013337W WO 2021192093 A1 WO2021192093 A1 WO 2021192093A1
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WO
WIPO (PCT)
Prior art keywords
air
indoor unit
heat exchanger
air passage
tubular member
Prior art date
Application number
PCT/JP2020/013337
Other languages
French (fr)
Japanese (ja)
Inventor
小澤　哲朗
Original Assignee
東芝キヤリア株式会社
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 東芝キヤリア株式会社 filed Critical 東芝キヤリア株式会社
Priority to PCT/JP2020/013337 priority Critical patent/WO2021192093A1/en
Priority to CN202080098982.6A priority patent/CN115315598A/en
Priority to JP2022509880A priority patent/JP7314402B2/en
Publication of WO2021192093A1 publication Critical patent/WO2021192093A1/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
    • F24F1/0011—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
    • 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

Definitions

  • An embodiment of the present invention relates to an indoor unit of an air conditioner.
  • the indoor unit of an air conditioner is equipped with an air suction port, an air outlet, a heat exchanger, and a fan that generates an air flow from the suction port to the air outlet via the heat exchanger.
  • the indoor space to be air-conditioned is adjusted to the optimum temperature by the airflow that is temperature-controlled and blown out from the air outlet (hereinafter referred to as the airflow).
  • the airflow that is temperature-controlled and blown out from the air outlet (hereinafter referred to as the airflow).
  • the reach of the blown wind is long and the air volume is large.
  • An object to be solved by the present invention is to provide an indoor unit of an air conditioner capable of efficiently achieving both an extension of the reach of a blown wind and an increase in air volume.
  • the indoor unit of the air conditioner includes a heat exchanger, a housing, a fan, a tubular member, and a wind direction plate.
  • the housing accommodates the heat exchanger and has an opening facing the heat exchanger.
  • the fan generates an air flow of air that has been heat-exchanged by the heat exchanger.
  • the wind direction plate adjusts the inclination of the airflow blown out from the air outlet.
  • the tubular member has an air outlet that blows the air flow into the indoor space, and constitutes an air passage through which the air flow continuously passes from the opening side to the air outlet side, and the air outlet of the air passage. It has a pair of throttle portions that narrow the cross-sectional area on the side from both sides in the delivery direction of the air passage from the cross-sectional area on the opening side.
  • FIG. 1 is a schematic perspective view of an indoor unit according to an embodiment.
  • FIG. 2 is a schematic cross-sectional view of the indoor unit along line II-II in FIG.
  • FIG. 3 is a schematic cross-sectional view of the indoor unit along lines III-III in FIG.
  • FIG. 4 is a schematic perspective view of the indoor unit with the air outlet cover removed.
  • FIG. 5 is a schematic perspective view of the rotating unit.
  • FIG. 1 is a schematic perspective view of the indoor unit 1 according to the present embodiment.
  • the indoor unit 1 is connected to an outdoor unit including a compressor for compressing the refrigerant, an outdoor heat exchanger, and the like by a refrigerant pipe.
  • An air conditioner equipped with a refrigeration cycle is composed of an indoor unit 1, an outdoor unit, a refrigerant pipe, and the like.
  • the air conditioner can switch between cooling operation and heating operation, for example.
  • the air conditioner may be capable of performing only cooling operation or heating operation.
  • the X direction, the Y direction, and the Z direction are defined as shown in FIG. These X, Y and Z directions are orthogonal to each other.
  • the Z direction is parallel to the vertical direction.
  • the Z direction may be referred to as upward, and the opposite direction may be referred to as downward.
  • the indoor unit 1 includes a housing 2 and an outlet unit 4 having an outlet 3 at the tip.
  • the housing 2 includes a front plate 20, a front cover 21 arranged above the front plate 20, a back plate 22 facing the front plate 20 and the front cover 21, and a pair of side plates 23 and 24 facing each other.
  • a bottom plate 25 and a top plate 26 facing the bottom plate 25 are provided.
  • the indoor unit 1 may be installed by only one unit, or is installed in a state of being stacked in a plurality of stages in the Z direction by connecting the back plate 22 to a frame arranged along a pillar or a wall surface of a building, for example. May be done. Further, a plurality of indoor units 1 may be arranged in the X direction, or may be installed at positions separated from each other.
  • the front plate 20, the front cover 21, and the back plate 22 are parallel to the XX plane defined by the X and Z directions.
  • the side plates 23, 24 are parallel to the YZ plane defined by the Y and Z directions.
  • the bottom plate 25 and the top plate 26 are parallel to the XY planes defined by the X and Y directions.
  • the housing 2 has a flat rectangular parallelepiped shape in which the width in the Y direction is sufficiently smaller than the width in the X and Z directions.
  • the shape of the housing 2 is not limited to this example.
  • the front cover 21 is arranged between the front plate 20 and the top plate 26 in the Z direction.
  • the front cover 21 is attached to the front plate 20 by screws 211.
  • a pair of claws are provided on the back surface of the front cover 21, and these claws are hooked on the mounting holes provided in the side plates 23 and 24.
  • the front cover 21 can be attached to and detached from other parts of the housing 2 by removing the screws 211.
  • the structure for making the front cover 21 removable is not limited to the one illustrated here.
  • the air outlet unit 4 is provided with a cylindrical cover (hereinafter referred to as an air outlet cover) 40 that tapers toward the air outlet 3.
  • the air outlet cover 40 covers the outer peripheral surface side of the first cylinder member 92 and the second cylinder member 31, which will be described later, and is a constituent member of the air outlet unit 4 including the air outlet 3 (rectifying plate 94, first cylinder member 92, which will be described later). , And the second cylinder member 31 and the like), and improve the design of the appearance.
  • the air outlet cover 40 is attached to the front plate 20 by at least a screw 41. In the example shown in FIG.
  • a recess 42 is provided on the outer peripheral surface of the air outlet cover 40, and a screw 41 is passed through a through hole of the end surface of the recess 42 on the housing 2 side.
  • the outer line of the air outlet cover 40 has a curved line shape.
  • the outlet unit 4 further includes a louver 5 provided at the outlet 3.
  • the louver 5 is composed of three rotatable wind direction plates 51, 52, 53.
  • the number of wind direction plates is not limited to three, and the louver 5 may be composed of two or less or four or more wind direction plates.
  • the wind direction plates 51, 52, and 53 adjust the inclination of the airflow blown out from the air outlet 3.
  • FIG. 2 to 4 show a schematic configuration of the indoor unit 1.
  • FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1
  • FIG. 3 is a cross-sectional view taken along the line III-III in FIG.
  • FIG. 4 is a schematic perspective view of the indoor unit 1 from which the air outlet cover 40 has been removed.
  • a heat exchanger 6 is arranged inside the housing 2.
  • the heat exchanger 6 includes a plurality of heat transfer tubes 60 extending in the X direction and a plurality of fins 61 connected to the heat transfer tubes 60.
  • the plurality of fins 61 have a long shape in the Z direction and are arranged at intervals in the X direction.
  • connection ports 62 and 63 for refrigerant pipes for connecting to the outdoor unit, and suction ports 27 facing the heat exchanger 6.
  • connection port 62 is connected to the inlet of the flow path composed of each heat transfer tube 60
  • connection port 63 is connected to the outlet of the flow path.
  • a drain pan 64 for receiving the condensed water generated in the heat exchanger 6 is arranged below the heat exchanger 6, below the heat exchanger 6, a drain pan 64 for receiving the condensed water generated in the heat exchanger 6 is arranged.
  • the condensed water collected in the drain pan 64 is discharged to the outside of the housing 2 through a pipe (not shown).
  • a mounting plate 70 parallel to the XZ plane is arranged above the heat exchanger 6, a mounting plate 70 parallel to the XZ plane is arranged.
  • the mounting plate 70 faces the front cover 21 and the back plate 22.
  • a partition plate 71 parallel to the XY plane is connected to the lower end of the mounting plate 70.
  • a heat insulating material 65 is arranged between the partition plate 71 and the heat exchanger 6.
  • the mounting plate 70 and the partition plate 71 may be integrally formed by bending one plate material into an L shape, or may be separate plate materials.
  • a space S1 for accommodating the control unit 8 is formed by the mounting plate 70, the partition plate 71, the front cover 21, and the upper surface plate 26.
  • the control unit 8 includes a control board 80 and various electronic components 81.
  • the control board 80 is attached to the mounting plate 70.
  • Each electronic component 81 is mounted on one surface of the control board 80 facing the front cover 21.
  • a communication line for communicating with a remote controller, an outdoor unit, another indoor unit, and the like installed outside the indoor unit 1 and a power supply line are connected to the control unit 8. These communication lines and power supply lines extend to the outside of the indoor unit 1 through, for example, an insertion port provided in the back plate 22.
  • the front plate 20 has an opening 29 that overlaps with the heat exchanger 6 in the Y direction.
  • a fan 9 facing the heat exchanger 6 through the opening 29 is arranged inside the air outlet cover 40.
  • the fan 9 generates an air flow of air whose temperature is controlled by heat exchange in the heat exchanger 6.
  • the fan 9 is, for example, an axial fan, and includes a fan motor 90 and a plurality of blades 91 rotated about a shaft AX by the fan motor 90.
  • the axis AX is parallel to the Y direction.
  • the fan 9 is arranged inside the first cylinder member 92 coaxial with the shaft AX.
  • the first cylinder member 92 surrounds the opening 29 on the outside of the housing 2 and inside the air outlet cover 40. At least a part of the outer peripheral surface of the first cylinder member 92 is covered with the heat insulating material 93.
  • the louver 5 is arranged at the end of the second cylinder member 31 coaxial with the shaft AX.
  • the wind direction plates 51, 52, and 53 of the louver 5 are rotated by, for example, a drive mechanism (hereinafter, referred to as a louver drive mechanism) 33 including a motor 34.
  • a louver drive mechanism hereinafter, referred to as a louver drive mechanism
  • the wind direction plates 51, 52, 53 may be manually rotatable.
  • the air outlet 3 corresponds to an opening on the tip end side of the second cylinder member 31.
  • the center of the outlet 3 is on the axis AX (the central axis of the outlet 3 and the axis AX coincide with each other).
  • a louver drive mechanism 33 is provided on the outer peripheral surface 31a (recessed portion 310 described later) of the second tubular member 31.
  • the louver drive mechanism 33 includes a gear for changing the angle of the wind direction plates 51, 52, 53 by the driving force of the motor 34, and rotates the wind direction plates 51, 52, 53 to a predetermined inclination.
  • the louver 5, the second cylinder member 31, the heat insulating material 32, the louver drive mechanism 33, and the motor 34 constitute the rotation unit 30.
  • the rotating unit 30 is rotatably held around the shaft AX by the holding mechanism 10.
  • the holding mechanism 10 rotatably connects the second cylinder member 31 with respect to the first cylinder member 92.
  • the holding mechanism 10 includes, for example, an annular gear provided at the end of the second tubular member 31 (base end 31b described later), and the gear is fed by the motor 11 in the circumferential direction around the shaft AX.
  • the second cylinder member 31 is rotated with respect to the first cylinder member 92.
  • the second tubular member 31 may be manually rotatable. In this case, for example, by arranging three gears at equal intervals in the circumferential direction around the shaft AX and engaging the gears, the second cylinder member 31 is rotatably supported with respect to the first cylinder member 92. do it.
  • the first cylinder member 92 and the second cylinder member 31 constitute an air passage AD.
  • the air passage AD is a flow path through which the air heat-exchanged (temperature controlled) by the heat exchanger 6 passes as an air flow due to the rotation of the fan 9.
  • the central axis of the air passage AD coincides with the axis AX.
  • a straightening vane 94 is arranged between the fan 9 and the louver 5. The straightening vane 94 is supported by the first cylinder member 92, and arranges the turbulent airflow immediately after being generated by the fan 9 substantially parallel to the shaft AX.
  • the straightening vane 94 has, for example, a honeycomb structure in which a large number of hexagonal openings are arranged, but the present invention is not limited to this example.
  • the first cylinder member 92, the second cylinder member 31, and the straightening vane 94 are included in the constituent members of the outlet unit 4.
  • the control unit 8 controls the rotation speed of the fan 9 based on the information input from the outside, the suction temperature and the blowout temperature detected by the temperature sensor included in the indoor unit 1. Further, the control unit 8 controls the holding mechanism 10 and the louver 5 based on the wind direction setting information input from the outside. By rotating the rotating unit 30 by the holding mechanism 10 and changing the angles of the wind direction plates 51, 52, 53 of the louver 5, it is possible to blow air in various directions.
  • the structure of the second cylinder member 31 constituting the air passage AD together with the first cylinder member 92 will be described.
  • the first cylinder member 92 corresponds to the upstream portion of the air passage AD, and the air passage from the opening 29 of the front plate 20 to the straightening vane 94 (hereinafter referred to as the first air passage AD1). ).
  • the second cylinder member 31 corresponds to a downstream portion of the air passage AD, and constitutes an air passage from the straightening vane 94 to the air outlet 3 (hereinafter, referred to as the second air passage AD2).
  • the first air passage AD1 and the second air passage AD2 communicate with each other via the straightening vane 94.
  • the air flow is deflected in a direction corresponding to the angle of the wind direction plates 51, 52, 53 of the louver 5.
  • FIG. 5 is a schematic perspective view of the rotating unit 30.
  • FIG. 5 shows the louver 5 and the second cylinder member 31 among the elements included in the rotating unit 30.
  • the wind direction plates 51, 52, and 53 of the louver 5 are open in parallel with the axis AX.
  • the first air passage AD1 is formed in a straight shape having a substantially constant cross-sectional area in the XX plane (plane perpendicular to the axis AX). That is, the cross-sectional area (opening area) of the first air passage AD1 on the opening 29 side and the cross-sectional area on the rectifying plate 94 side are almost the same.
  • the second air passage AD2 is configured to have a tapered shape in which the cross-sectional area in the XX plane narrows (gradually changes) toward the downstream side. That is, the cross-sectional area of the second air passage AD2 on the outlet 3 side is smaller than the cross-sectional area of the straightening vane 94 side, in short, the cross-sectional area of the first air passage AD1.
  • the second cylinder member 31 has a large diameter portion at the base end portion 31b on the rectifying plate 94 side and a small diameter portion at the tip end portion 31c on the outlet 3 side.
  • the intermediate portion 31d is a reduced diameter portion whose inner diameter gradually decreases from the base end portion 31b to the tip end portion 31c.
  • the base end portion 31b has a flange 311.
  • the flange 311 is a flange located on the large diameter side of the second tubular member 31, and forms a part of the holding mechanism 10.
  • a plurality of meshing teeth 312 are formed on the outer peripheral edge of the flange 311 over the entire circumference. These plurality of meshing teeth 312 form an annular gear and mesh with the meshing teeth (not shown) of the motor 11.
  • the tip portion 31c has a flange 313.
  • the flange 313 is a flange located on the small diameter side of the second tubular member 31, and extends in the diameter-expanding direction over the entire outer peripheral edge of the tip portion 31c.
  • the outer diameter dimension of the flange 313 is slightly smaller than the inner diameter dimension of the tip portion 40a of the air outlet cover 40 so as not to hinder the rotation of the second cylinder member 31 with respect to the first cylinder member 92.
  • the outer diameter dimension of the flange 313 is set so that there is no conspicuous gap between the flange 313 and the tip portion 40a of the air outlet cover 40 when the indoor unit 1 is viewed from the front.
  • the second cylinder member 31 has a throttle portion 31e that further narrows the cross-sectional area of the second air passage AD2.
  • the throttle portion 31e is a portion that protrudes into the second air passage AD2 from a part of the inner peripheral surface 31f of the second cylinder member 31, and narrows the second air passage AD2 by the amount of protrusion. Due to the throttle portion 31e, the cross-sectional area of the second air passage AD2 on the air outlet 3 side is narrower than the cross-sectional area of the straightening vane 94 side, in short, the opening 29 side.
  • the throttle portions 31e are arranged in pairs at positions symmetrical with respect to the axis AX, and the second air passage AD2 is narrowed in parallel from both sides in the delivery direction (diameter direction).
  • the axis AX corresponds to the central axis of the cross section of the second air passage AD2 in the XX plane.
  • the form of the pair of diaphragm portions 31e is defined by the first side e1, the second side e2, the third side e3, the fourth side e4, the fifth side e5, and the sixth side e6.
  • the first side e1 is a side portion that linearly connects two points on the circumference that define the contour of the air outlet 3 when the indoor unit 1 is viewed from the front.
  • the first side e1 of the pair of diaphragm portions 31e is a linear portion of these throttle portions 31e.
  • the second side e2 is a side portion that is in contact with the inner peripheral surface 31f in parallel with the axis AX from one end of the first side e1.
  • the third side e3 is a side portion that is in contact with the inner peripheral surface 31f in parallel with the axis AX from the other end of the first side e1, and is parallel to the second side e2.
  • the fourth side e4 is a side portion connecting the ends opposite to the continuous ends of the second side e2 and the first side e1 of the third side e3, and is parallel to the first side e1.
  • the fifth side e5 is a side portion continuous from one end of the fourth side e4 along the inner peripheral surface 31f.
  • the sixth side e6 is a side portion continuous from the other end of the fourth side e4 along the inner peripheral surface 31f.
  • the first to fourth sides e1 to e4 define a flat surface 315.
  • the flat surface 315 includes the first to fourth sides e1 to e4.
  • the flat surface 315 is a surface portion that projects in a quadrilateral shape toward the second air passage AD2, in other words, a surface portion that dents the outer peripheral surface 31a of the second tubular member 31 into a quadrilateral shape.
  • the flat surface 315 is a pair of mounting surfaces 315a, 315b for mounting the wind direction plates 51, 52, 53.
  • the mounting surfaces 315a and 315b face each other in a direction intersecting the arrangement direction of the wind direction plates 51, 52 and 53 (X direction in the example shown in FIG. 5).
  • the mounting surfaces 315a and 315b are flat surfaces having three mounting holes (not shown) arranged in the arrangement direction of the wind direction plates 51, 52 and 53.
  • the shaft portions 54 of the wind direction plates 51, 52, and 53 are inserted into the mounting holes, respectively.
  • the shaft portion 54 is provided so as to project one by one from the wind direction plates 51, 52, 53 to both sides in the X direction.
  • the louver drive mechanism 33 is provided on the outer peripheral surface 31a of the second cylinder member 31, but its position corresponds to the throttle portion 31e.
  • the louver drive mechanism 33 is arranged on the outer peripheral surface 31a side of the throttle portion 31e, that is, a portion recessed from the outer peripheral surface 31a (hereinafter, referred to as a recess 310). That is, the diaphragm portion 31e is configured to have a recess 310.
  • the recess 310 is a portion of the narrowing portion 31e protruding into the second air passage AD2 as viewed from the outer peripheral surface 31a side, and both correspond to substantially the same portion in the second cylinder member 31.
  • the louver drive mechanism 33 is arranged in the recess 310 on the back side of the mounting surface 315b, but the louver drive mechanism 33 may be arranged in the recess 310 on the back side of the mounting surface 315a.
  • the recess 310 may be provided by only one of the pair of diaphragms 31e.
  • the throttle portion 31e may have a form in which the portion corresponding to the recess 310 is filled with the base material of the second cylinder member 31.
  • a heat insulating material 32 is interposed between the recess 310 and the louver drive mechanism 33.
  • a part of the flange 313 and the front surface 31s of the throttle portion 31e are provided with protrusions 314 protruding forward.
  • the front surface 31s of the throttle portion 31e is a surface portion surrounded by the peripheral edge of the air outlet 3 and the first side e1.
  • the protrusions 314 are arranged in pairs at positions symmetrical with respect to the axis AX.
  • the number of protrusions 314 is not particularly limited. There may be two as in the examples shown in FIGS. 1, 3 to 5, three or more, or only one.
  • the protrusion may be provided only on one of the pair of diaphragm portions 31e.
  • the protrusion 314 is an input portion to which a force for rotating the second cylinder member 31 is applied when the second cylinder member 31 is manually rotated with respect to the first cylinder member 92, and functions as a handle.
  • the protrusion 314 may be pinched and the second cylinder member 31 may be rotated by a desired amount in the circumferential direction around the shaft AX.
  • the protrusion 314 has a form extending linearly in the radial direction of the outlet 3, but is not limited to the illustrated form.
  • the shape of the protrusion may be a columnar shape (boss) or the like.
  • the second cylinder member 31 may have a concave shape such as a hole or a groove instead of a protrusion.
  • a finger or a jig is hooked on these holes or grooves to rotate the second cylinder member 31.
  • each member constituting the outlet unit 4 specifically, the outlet cover 40, the wind direction plates 51, 52, 53, the straightening vane 94, the first cylinder member 92, and the second cylinder member 31 are all. It is made of crystalline resin.
  • the crystalline resin for example, polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET) and the like can be applied, but the present invention is not limited to these examples.
  • the blades 91 of the fan 9 and the case of the fan motor 90 may also be formed of crystalline resin.
  • the substrate of each of these members may be formed of a material different from the crystalline resin, and the substrate may be coated with the crystalline resin.
  • the temperature is controlled, the airflow passes through the air passage AD, and the airflow from the airflow outlet 3 (hereinafter referred to as the airflow) is suppressed from decreasing, and the airflow reaches the airflow. You can extend the distance.
  • the first cylinder member 92 constituting the first air passage AD1 has a straight shape having a substantially constant cross-sectional area in the XX plane (plane perpendicular to the axis AX). It is configured in.
  • the intermediate portion 31d is a reduced diameter portion, and the cross-sectional area in the XX plane narrows (gradually changes) toward the downstream side. It is structured in a tapered shape. Therefore, the air volume of the blown wind can be secured by setting the cross-sectional area (opening area) of the first air passage AD1 on the opening 29 side as a desired size.
  • the cross-sectional area of the second air passage AD2 communicating with the first air passage AD1 on the outlet 3 side can be made smaller than the cross-sectional area of the first air passage AD1, so that the reach of the blown wind can be extended. Can be made to.
  • the second cylinder member 31 has a throttle portion 31e that further narrows the cross-sectional area of the tapered second air passage AD2, the reach of the blown wind can be further extended. As a result, it is possible to efficiently achieve both an extension of the reach of the blown wind and an increase in the air volume. Therefore, the temperature of the indoor space to be air-conditioned can be efficiently adjusted.
  • the recess 310 is formed in the second cylinder member 31, and the louver drive mechanism 33 is arranged in the recess 310. Therefore, the recess 310 does not become a dead space, and an appropriate louver drive mechanism 33 arrangement space can be secured. As a result, the louver drive mechanism 33 can be arranged without securing an extra space between the outer peripheral surface 31a of the second cylinder member 31 and the air outlet cover 40.
  • louver drive mechanism 33 since the louver drive mechanism 33 does not protrude into the second air passage AD2, the louver drive mechanism 33 does not interfere with the ventilation of the blown air. Therefore, it is possible to prevent the louver drive mechanism 33 from acting as a ventilation resistance of the blown air and affecting the reachable distance and the air volume.
  • a protrusion (handle) 314 is provided on a part of the flange 313, and the handle 314 extends to the throttle portion 31e. Therefore, it is possible to arrange a large handle 314 that is easy to operate without separately providing a dedicated space for arranging the handle 314. Therefore, the second cylinder member 31 can be smoothly rotated, and the operability can be improved. As a result, not only the tilt deflection by the louver drive mechanism 33 but also the circumferential position of the louver 5 (wind direction plates 51, 52, 53) centered on the axis AX can be changed, and the optimum direction of the indoor space to be air-conditioned can be changed. The wind can be blown out.
  • the outlet cover 40, the wind direction plates 51, 52, 53, the straightening vane 94, the first cylinder member 92, and the second cylinder member 31 constituting the outlet unit 4 are all made of crystalline resin.
  • each of these members is made of a crystalline resin such as polypropylene, it is easy to process and mass productivity can be improved. Further, since the crystalline resin has high resistance to oil mist, coating solvent, etc., the outlet unit 4 and eventually the indoor unit 1 can be used for a long period of time even in an environment where these components are contained in the atmosphere. It becomes possible to do.

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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)

Abstract

This indoor unit for an air conditioner according to an embodiment comprises a heat exchanger, a housing, a fan, a cylindrical member, and a wind direction plate. The housing houses the heat exchanger and has an opening facing the heat exchanger. The fan generates an airflow of air heat-exchanged by the heat exchanger. The wind direction plate adjusts the inclination of the airflow blown out from an air outlet. The cylindrical member has an air outlet for blowing the airflow into an indoor space, constitutes a wind path through which the airflow passes continuously from the opening side to the air outlet side, and has a pair of throttle portions that narrow the cross-sectional area of the wind path on the air outlet side from both sides in the direction in which the wind path is traversed compared to the cross-sectional area of the wind path on the opening side.

Description

空気調和機の室内ユニットIndoor unit of air conditioner
　本発明の実施形態は、空気調和機の室内ユニットに関する。 An embodiment of the present invention relates to an indoor unit of an air conditioner.
　一般に、空気調和機の室内ユニットは、空気の吸込口と、空気の吹出口と、熱交換器と、吸込口から熱交換器を経て吹出口に至る気流を発生させるファンとを備えている。 Generally, the indoor unit of an air conditioner is equipped with an air suction port, an air outlet, a heat exchanger, and a fan that generates an air flow from the suction port to the air outlet via the heat exchanger.
　空調対象の室内空間は、温調されて吹出口から吹き出される気流（以下、吹出風という）によって最適な温度に調整される。室内空間の温度を効率よく調整するためには、例えば吹出風の到達距離は長く、風量は多い方が好ましい。 The indoor space to be air-conditioned is adjusted to the optimum temperature by the airflow that is temperature-controlled and blown out from the air outlet (hereinafter referred to as the airflow). In order to efficiently adjust the temperature of the indoor space, for example, it is preferable that the reach of the blown wind is long and the air volume is large.
国際公開第２０１７／１４２０２６号International Publication No. 2017/142026
　本発明が解決しようとする課題は、吹出風の到達距離の延長と風量増を効率よく両立させることが可能な空気調和機の室内ユニットを提供することにある。 An object to be solved by the present invention is to provide an indoor unit of an air conditioner capable of efficiently achieving both an extension of the reach of a blown wind and an increase in air volume.
　一実施形態に係る空気調和機の室内ユニットは、熱交換器と、筐体と、ファンと、筒部材と、風向板とを備えている。前記筐体は、前記熱交換器を収容し、前記熱交換器と対向する開口を有する。前記ファンは、前記熱交換器で熱交換された空気の気流を発生させる。前記風向板は、前記吹出口から吹き出される前記気流の傾きを調整する。前記筒部材は、前記気流を室内空間に吹き出す吹出口を有し、前記開口側から前記吹出口側まで連続して前記気流が通過する風路を構成しており、前記風路の前記吹出口側の断面積を前記開口側の断面積よりも前記風路の差渡し方向の両側からそれぞれ狭める一対の絞り部を有する。 The indoor unit of the air conditioner according to one embodiment includes a heat exchanger, a housing, a fan, a tubular member, and a wind direction plate. The housing accommodates the heat exchanger and has an opening facing the heat exchanger. The fan generates an air flow of air that has been heat-exchanged by the heat exchanger. The wind direction plate adjusts the inclination of the airflow blown out from the air outlet. The tubular member has an air outlet that blows the air flow into the indoor space, and constitutes an air passage through which the air flow continuously passes from the opening side to the air outlet side, and the air outlet of the air passage. It has a pair of throttle portions that narrow the cross-sectional area on the side from both sides in the delivery direction of the air passage from the cross-sectional area on the opening side.
図１は、一実施形態に係る室内ユニットの概略的な斜視図である。FIG. 1 is a schematic perspective view of an indoor unit according to an embodiment. 図２は、図１におけるＩＩ－ＩＩ線に沿う室内ユニットの概略的な断面図である。FIG. 2 is a schematic cross-sectional view of the indoor unit along line II-II in FIG. 図３は、図１におけるＩＩＩ－ＩＩＩ線に沿う室内ユニットの概略的な断面図である。FIG. 3 is a schematic cross-sectional view of the indoor unit along lines III-III in FIG. 図４は、吹出口カバーを取り外した室内ユニットの概略的な斜視図である。FIG. 4 is a schematic perspective view of the indoor unit with the air outlet cover removed. 図５は、回動ユニットの概略的な斜視図である。FIG. 5 is a schematic perspective view of the rotating unit.
　一実施形態につき、図面を参照しながら説明する。　
　図１は、本実施形態に係る室内ユニット１の概略的な斜視図である。この室内ユニット１は、冷媒を圧縮する圧縮機および室外熱交換器などを含む室外ユニットと冷媒配管にて接続される。室内ユニット１、室外ユニットおよび冷媒配管などにより、冷凍サイクルを備えた空気調和機が構成される。空気調和機は、例えば冷房運転と暖房運転を切り替えることが可能である。ただし、空気調和機は、冷房運転または暖房運転のみ実行可能であってもよい。 One embodiment will be described with reference to the drawings.
FIG. 1 is a schematic perspective view of the indoor unit 1 according to the present embodiment. The indoor unit 1 is connected to an outdoor unit including a compressor for compressing the refrigerant, an outdoor heat exchanger, and the like by a refrigerant pipe. An air conditioner equipped with a refrigeration cycle is composed of an indoor unit 1, an outdoor unit, a refrigerant pipe, and the like. The air conditioner can switch between cooling operation and heating operation, for example. However, the air conditioner may be capable of performing only cooling operation or heating operation.
　本実施形態においては、図１に示すようにＸ方向、Ｙ方向およびＺ方向を定義する。これらＸ方向、Ｙ方向およびＺ方向は互いに直交する。Ｚ方向は、鉛直方向と平行である。以下の説明においては、Ｚ方向を上方と呼び、その反対方向を下方と呼ぶことがある。 In this embodiment, the X direction, the Y direction, and the Z direction are defined as shown in FIG. These X, Y and Z directions are orthogonal to each other. The Z direction is parallel to the vertical direction. In the following description, the Z direction may be referred to as upward, and the opposite direction may be referred to as downward.
　室内ユニット１は、筐体２と、先端に吹出口３を有する吹出口ユニット４とを備えている。筐体２は、前面板２０と、前面板２０の上方に配置された前面カバー２１と、前面板２０および前面カバー２１に対向する背面板２２と、互いに対向する一対の側面板２３，２４と、底面板２５と、底面板２５に対向する上面板２６とを備えている。室内ユニット１は、一台のみで設置されてもよいし、例えば建物の柱や壁面に沿って配置されたフレームに背面板２２を連結することで、Ｚ方向に複数段に積み重なった状態で設置されてもよい。また、複数の室内ユニット１がＸ方向に並べられてもよいし、互いに離れた位置に設置されてもよい。 The indoor unit 1 includes a housing 2 and an outlet unit 4 having an outlet 3 at the tip. The housing 2 includes a front plate 20, a front cover 21 arranged above the front plate 20, a back plate 22 facing the front plate 20 and the front cover 21, and a pair of side plates 23 and 24 facing each other. A bottom plate 25 and a top plate 26 facing the bottom plate 25 are provided. The indoor unit 1 may be installed by only one unit, or is installed in a state of being stacked in a plurality of stages in the Z direction by connecting the back plate 22 to a frame arranged along a pillar or a wall surface of a building, for example. May be done. Further, a plurality of indoor units 1 may be arranged in the X direction, or may be installed at positions separated from each other.
　前面板２０、前面カバー２１および背面板２２は、Ｘ方向およびＺ方向によって規定されるＸ－Ｚ平面と平行である。側面板２３，２４は、Ｙ方向およびＺ方向によって規定されるＹ－Ｚ平面と平行である。底面板２５および上面板２６は、Ｘ方向およびＹ方向によって規定されるＸ－Ｙ平面と平行である。図１に示す例において、筐体２は、Ｘ方向およびＺ方向における幅よりもＹ方向における幅が十分に小さい扁平な直方体状である。ただし、筐体２の形状はこの例に限られない。 The front plate 20, the front cover 21, and the back plate 22 are parallel to the XX plane defined by the X and Z directions. The side plates 23, 24 are parallel to the YZ plane defined by the Y and Z directions. The bottom plate 25 and the top plate 26 are parallel to the XY planes defined by the X and Y directions. In the example shown in FIG. 1, the housing 2 has a flat rectangular parallelepiped shape in which the width in the Y direction is sufficiently smaller than the width in the X and Z directions. However, the shape of the housing 2 is not limited to this example.
　前面カバー２１は、Ｚ方向において前面板２０と上面板２６の間に配置されている。前面カバー２１は、ねじ２１１によって前面板２０に取り付けられている。また、例えば前面カバー２１の裏面に一対の爪部が設けられており、これら爪部が側面板２３，２４に設けられた取付孔に引っ掛けられている。このような構造においては、ねじ２１１を外すことにより前面カバー２１が筐体２の他の部分に対して着脱可能となる。なお、前面カバー２１を着脱可能とするための構造は、ここで例示したものに限られない。 The front cover 21 is arranged between the front plate 20 and the top plate 26 in the Z direction. The front cover 21 is attached to the front plate 20 by screws 211. Further, for example, a pair of claws are provided on the back surface of the front cover 21, and these claws are hooked on the mounting holes provided in the side plates 23 and 24. In such a structure, the front cover 21 can be attached to and detached from other parts of the housing 2 by removing the screws 211. The structure for making the front cover 21 removable is not limited to the one illustrated here.
　吹出口ユニット４は、吹出口３に向けて先細る円筒状のカバー（以下、吹出口カバーという）４０を備えている。吹出口カバー４０は、後述する第１筒部材９２および第２筒部材３１の外周面側を覆い、吹出口３を含む吹出口ユニット４の構成部材（後述する整流板９４、第１筒部材９２、および第２筒部材３１など）を保護するとともに、外観のデザイン性を向上させる。吹出口カバー４０は、少なくともねじ４１によって前面板２０に取り付けられている。図１に示す例においては、吹出口カバー４０の外周面に凹部４２が設けられ、この凹部４２の筐体２側の端面が有する貫通孔にねじ４１が通されている。吹出口カバー４０の外郭線は、湾曲線状をなしている。 The air outlet unit 4 is provided with a cylindrical cover (hereinafter referred to as an air outlet cover) 40 that tapers toward the air outlet 3. The air outlet cover 40 covers the outer peripheral surface side of the first cylinder member 92 and the second cylinder member 31, which will be described later, and is a constituent member of the air outlet unit 4 including the air outlet 3 (rectifying plate 94, first cylinder member 92, which will be described later). , And the second cylinder member 31 and the like), and improve the design of the appearance. The air outlet cover 40 is attached to the front plate 20 by at least a screw 41. In the example shown in FIG. 1, a recess 42 is provided on the outer peripheral surface of the air outlet cover 40, and a screw 41 is passed through a through hole of the end surface of the recess 42 on the housing 2 side. The outer line of the air outlet cover 40 has a curved line shape.
　吹出口ユニット４は、吹出口３に設けられたルーバー５をさらに備えている。図１に示す例において、ルーバー５は、回動可能な三つの風向板５１，５２，５３によって構成されている。風向板の数は三つに限定されず、ルーバー５は二つ以下または四つ以上の風向板によって構成されてもよい。風向板５１，５２，５３は、吹出口３から吹き出される気流の傾きを調整する。 The outlet unit 4 further includes a louver 5 provided at the outlet 3. In the example shown in FIG. 1, the louver 5 is composed of three rotatable wind direction plates 51, 52, 53. The number of wind direction plates is not limited to three, and the louver 5 may be composed of two or less or four or more wind direction plates. The wind direction plates 51, 52, and 53 adjust the inclination of the airflow blown out from the air outlet 3.
　図２から図４には、室内ユニット１の概略的な構成を示す。図２は、図１におけるＩＩ－ＩＩ線に沿う断面図であり、図３は、図１におけるＩＩＩ－ＩＩＩ線に沿う断面図である。図４は、吹出口カバー４０を取り外した室内ユニット１の概略的な斜視図である。　
　図２および図３に示すように、筐体２の内部には熱交換器６が配置されている。熱交換器６は、Ｘ方向に延びる複数の伝熱管６０と、伝熱管６０に連結された複数のフィン６１とを備えている。複数のフィン６１は、図２に示すようにＺ方向に長尺な形状を有し、Ｘ方向に間隔を空けて並んでいる。 2 to 4 show a schematic configuration of the indoor unit 1. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line III-III in FIG. FIG. 4 is a schematic perspective view of the indoor unit 1 from which the air outlet cover 40 has been removed.
As shown in FIGS. 2 and 3, a heat exchanger 6 is arranged inside the housing 2. The heat exchanger 6 includes a plurality of heat transfer tubes 60 extending in the X direction and a plurality of fins 61 connected to the heat transfer tubes 60. As shown in FIG. 2, the plurality of fins 61 have a long shape in the Z direction and are arranged at intervals in the X direction.
　背面板２２には、室外ユニットと接続するための冷媒配管の接続口６２，６３と、熱交換器６と対向する吸込口２７とが設けられている。例えば、接続口６２には各伝熱管６０で構成される流路の入口が接続され、接続口６３には当該流路の出口が接続される。 The back plate 22 is provided with connection ports 62 and 63 for refrigerant pipes for connecting to the outdoor unit, and suction ports 27 facing the heat exchanger 6. For example, the connection port 62 is connected to the inlet of the flow path composed of each heat transfer tube 60, and the connection port 63 is connected to the outlet of the flow path.
　熱交換器６の下方には、熱交換器６で生じる結露水を受けるためのドレンパン６４が配置されている。ドレンパン６４に溜まった結露水は、図示しない配管を通じて筐体２の外部に排出される。 Below the heat exchanger 6, a drain pan 64 for receiving the condensed water generated in the heat exchanger 6 is arranged. The condensed water collected in the drain pan 64 is discharged to the outside of the housing 2 through a pipe (not shown).
　熱交換器６の上方には、Ｘ－Ｚ平面と平行な取付板７０が配置されている。取付板７０は、前面カバー２１および背面板２２と対向している。取付板７０の下端には、Ｘ－Ｙ平面と平行な仕切板７１が接続されている。仕切板７１と熱交換器６の間には、断熱材６５が配置されている。取付板７０と仕切板７１は、１枚の板材をＬ字型に曲げることにより一体的に形成されてもよいし、別々の板材であってもよい。取付板７０、仕切板７１、前面カバー２１および上面板２６により、制御部８を収容するための空間Ｓ１が形成されている。 Above the heat exchanger 6, a mounting plate 70 parallel to the XZ plane is arranged. The mounting plate 70 faces the front cover 21 and the back plate 22. A partition plate 71 parallel to the XY plane is connected to the lower end of the mounting plate 70. A heat insulating material 65 is arranged between the partition plate 71 and the heat exchanger 6. The mounting plate 70 and the partition plate 71 may be integrally formed by bending one plate material into an L shape, or may be separate plate materials. A space S1 for accommodating the control unit 8 is formed by the mounting plate 70, the partition plate 71, the front cover 21, and the upper surface plate 26.
　制御部８は、制御基板８０や各種の電子部品８１を含む。制御基板８０は、取付板７０に取り付けられている。各電子部品８１は、前面カバー２１と対向する制御基板８０の一面に実装されている。制御部８には、室内ユニット１の外部に設置されたリモートコントローラ、室外ユニット、他の室内ユニットなどと通信するための通信線や、電源線が接続されている。これら通信線および電源線は、例えば背面板２２に設けられた挿通口を通じて室内ユニット１の外部に延出している。 The control unit 8 includes a control board 80 and various electronic components 81. The control board 80 is attached to the mounting plate 70. Each electronic component 81 is mounted on one surface of the control board 80 facing the front cover 21. A communication line for communicating with a remote controller, an outdoor unit, another indoor unit, and the like installed outside the indoor unit 1 and a power supply line are connected to the control unit 8. These communication lines and power supply lines extend to the outside of the indoor unit 1 through, for example, an insertion port provided in the back plate 22.
　前面板２０は、Ｙ方向において熱交換器６と重なる開口２９を有している。吹出口カバー４０の内側には、開口２９を通じて熱交換器６と対向するファン９が配置されている。ファン９は、熱交換器６で熱交換により温調された空気の気流を発生させる。ファン９は、例えば軸流ファンであり、ファンモータ９０と、ファンモータ９０によって軸ＡＸを中心に回転する複数の羽根９１とを備えている。本実施形態において、軸ＡＸはＹ方向と平行である。 The front plate 20 has an opening 29 that overlaps with the heat exchanger 6 in the Y direction. Inside the air outlet cover 40, a fan 9 facing the heat exchanger 6 through the opening 29 is arranged. The fan 9 generates an air flow of air whose temperature is controlled by heat exchange in the heat exchanger 6. The fan 9 is, for example, an axial fan, and includes a fan motor 90 and a plurality of blades 91 rotated about a shaft AX by the fan motor 90. In this embodiment, the axis AX is parallel to the Y direction.
　ファン９は、軸ＡＸと同軸の第１筒部材９２の内部に配置されている。第１筒部材９２は、筐体２の外側かつ吹出口カバー４０の内側において開口２９を囲っている。第１筒部材９２の外周面の少なくとも一部は、断熱材９３によって覆われている。 The fan 9 is arranged inside the first cylinder member 92 coaxial with the shaft AX. The first cylinder member 92 surrounds the opening 29 on the outside of the housing 2 and inside the air outlet cover 40. At least a part of the outer peripheral surface of the first cylinder member 92 is covered with the heat insulating material 93.
　ルーバー５は、軸ＡＸと同軸の第２筒部材３１の端部に配置されている。ルーバー５の風向板５１，５２，５３は、例えばモータ３４を含む駆動機構（以下、ルーバー駆動機構という）３３によって回動される。ただし、風向板５１，５２，５３は、手動で回動可能であってもよい。 The louver 5 is arranged at the end of the second cylinder member 31 coaxial with the shaft AX. The wind direction plates 51, 52, and 53 of the louver 5 are rotated by, for example, a drive mechanism (hereinafter, referred to as a louver drive mechanism) 33 including a motor 34. However, the wind direction plates 51, 52, 53 may be manually rotatable.
　第２筒部材３１の外周面３１ａの少なくとも一部は、断熱材３２によって覆われている。吹出口３は、第２筒部材３１の先端側の開口に相当する。図２および図３に示す例において、吹出口３の中心は軸ＡＸ上にある（吹出口３の中心軸と軸ＡＸが一致している）。 At least a part of the outer peripheral surface 31a of the second cylinder member 31 is covered with the heat insulating material 32. The air outlet 3 corresponds to an opening on the tip end side of the second cylinder member 31. In the examples shown in FIGS. 2 and 3, the center of the outlet 3 is on the axis AX (the central axis of the outlet 3 and the axis AX coincide with each other).
　図３および図４に示すように、第２筒部材３１の外周面３１ａ（後述する凹部３１０）には、ルーバー駆動機構３３が設けられている。ルーバー駆動機構３３は、モータ３４の駆動力により風向板５１，５２，５３の角度を変更するためのギアなどを含み、風向板５１，５２，５３を所定の傾きに回動させる。 As shown in FIGS. 3 and 4, a louver drive mechanism 33 is provided on the outer peripheral surface 31a (recessed portion 310 described later) of the second tubular member 31. The louver drive mechanism 33 includes a gear for changing the angle of the wind direction plates 51, 52, 53 by the driving force of the motor 34, and rotates the wind direction plates 51, 52, 53 to a predetermined inclination.
　ルーバー５、第２筒部材３１、断熱材３２、ルーバー駆動機構３３およびモータ３４は、回動ユニット３０を構成する。回動ユニット３０は、保持機構１０により軸ＡＸを中心として回動可能に保持されている。 The louver 5, the second cylinder member 31, the heat insulating material 32, the louver drive mechanism 33, and the motor 34 constitute the rotation unit 30. The rotating unit 30 is rotatably held around the shaft AX by the holding mechanism 10.
　具体的には、保持機構１０は、第２筒部材３１を第１筒部材９２に対して回動可能に、両者を接続している。保持機構１０は、例えば第２筒部材３１の端部（後述する基端部３１ｂ）に設けられた環状のギアを含み、このギアをモータ１１によって軸ＡＸを中心とした円周方向に送ることで第２筒部材３１を第１筒部材９２に対して回動させる。第２筒部材３１は、手動で回動可能であってもよい。この場合、例えば軸ＡＸを中心とする円周方向に等間隔で三つの歯車を配置してギアに噛合させることで、第２筒部材３１を第１筒部材９２に対して回動可能に支持すればよい。 Specifically, the holding mechanism 10 rotatably connects the second cylinder member 31 with respect to the first cylinder member 92. The holding mechanism 10 includes, for example, an annular gear provided at the end of the second tubular member 31 (base end 31b described later), and the gear is fed by the motor 11 in the circumferential direction around the shaft AX. The second cylinder member 31 is rotated with respect to the first cylinder member 92. The second tubular member 31 may be manually rotatable. In this case, for example, by arranging three gears at equal intervals in the circumferential direction around the shaft AX and engaging the gears, the second cylinder member 31 is rotatably supported with respect to the first cylinder member 92. do it.
　第１筒部材９２および第２筒部材３１は、風路ＡＤを構成する。風路ＡＤは、熱交換器６で熱交換（温調）された空気がファン９の回転により気流となって通過する流路である。風路ＡＤの中心軸は、軸ＡＸと一致している。風路ＡＤにおいて、ファン９とルーバー５の間には整流板９４が配置されている。整流板９４は、第１筒部材９２によって支持され、ファン９によって発生した直後の乱れた気流を軸ＡＸと略平行に整える。整流板９４は、例えば六角形の多数の開口が配列されたハニカム構造を有しているが、この例に限られない。第１筒部材９２、第２筒部材３１、および整流板９４は、吹出口ユニット４の構成部材に含まれる。 The first cylinder member 92 and the second cylinder member 31 constitute an air passage AD. The air passage AD is a flow path through which the air heat-exchanged (temperature controlled) by the heat exchanger 6 passes as an air flow due to the rotation of the fan 9. The central axis of the air passage AD coincides with the axis AX. In the air passage AD, a straightening vane 94 is arranged between the fan 9 and the louver 5. The straightening vane 94 is supported by the first cylinder member 92, and arranges the turbulent airflow immediately after being generated by the fan 9 substantially parallel to the shaft AX. The straightening vane 94 has, for example, a honeycomb structure in which a large number of hexagonal openings are arranged, but the present invention is not limited to this example. The first cylinder member 92, the second cylinder member 31, and the straightening vane 94 are included in the constituent members of the outlet unit 4.
　ファン９が回転すると、吸込口２７、熱交換器６、整流板９４および吹出口３を順に通る気流が発生する。冷房運転時には熱交換器６が蒸発器として機能し、吸込口２７から吸い込まれた空気が冷やされる。暖房運転時には熱交換器６が凝縮器として機能し、吸込口２７から吸い込まれた空気が暖められる。温調された気流は、整流板９４で整流され、ルーバー５の風向板５１，５２，５３の角度に応じた方向へ吹出口３から室内空間に吹き出される。 When the fan 9 rotates, an air flow that passes through the suction port 27, the heat exchanger 6, the rectifying plate 94, and the air outlet 3 in this order is generated. During the cooling operation, the heat exchanger 6 functions as an evaporator, and the air sucked from the suction port 27 is cooled. During the heating operation, the heat exchanger 6 functions as a condenser to warm the air sucked from the suction port 27. The temperature-controlled airflow is rectified by the rectifying plate 94 and blown out from the outlet 3 into the indoor space in the direction corresponding to the angle of the wind direction plates 51, 52, 53 of the louver 5.
　制御部８は、外部から入力される情報や室内ユニット１が備える温度センサによって検出される吸込温度および吹出温度等に基づいてファン９の回転数を制御する。また、制御部８は、外部から入力される風向きの設定情報に基づいて保持機構１０やルーバー５を制御する。保持機構１０により回動ユニット３０を回動させ、かつルーバー５の風向板５１，５２，５３の角度を変更することで、様々な方向への送風が可能となる。 The control unit 8 controls the rotation speed of the fan 9 based on the information input from the outside, the suction temperature and the blowout temperature detected by the temperature sensor included in the indoor unit 1. Further, the control unit 8 controls the holding mechanism 10 and the louver 5 based on the wind direction setting information input from the outside. By rotating the rotating unit 30 by the holding mechanism 10 and changing the angles of the wind direction plates 51, 52, 53 of the louver 5, it is possible to blow air in various directions.
　続いて、第１筒部材９２とともに風路ＡＤを構成する第２筒部材３１の構造について説明する。　
　図２および図３に示すように、第１筒部材９２は、風路ＡＤの上流部分に相当し、前面板２０の開口２９から整流板９４までの風路（以下、第１風路ＡＤ１という）を構成する。これに対し、第２筒部材３１は、風路ＡＤの下流部分に相当し、整流板９４から吹出口３までの風路（以下、第２風路ＡＤ２という）を構成する。第１風路ＡＤ１と第２風路ＡＤ２は、整流板９４を介して連通している。第２風路ＡＤ２において、気流は、ルーバー５の風向板５１，５２，５３の角度に応じた方向に偏向される。 Subsequently, the structure of the second cylinder member 31 constituting the air passage AD together with the first cylinder member 92 will be described.
As shown in FIGS. 2 and 3, the first cylinder member 92 corresponds to the upstream portion of the air passage AD, and the air passage from the opening 29 of the front plate 20 to the straightening vane 94 (hereinafter referred to as the first air passage AD1). ). On the other hand, the second cylinder member 31 corresponds to a downstream portion of the air passage AD, and constitutes an air passage from the straightening vane 94 to the air outlet 3 (hereinafter, referred to as the second air passage AD2). The first air passage AD1 and the second air passage AD2 communicate with each other via the straightening vane 94. In the second air passage AD2, the air flow is deflected in a direction corresponding to the angle of the wind direction plates 51, 52, 53 of the louver 5.
　図５は、回動ユニット３０の概略的な斜視図である。図５には、回動ユニット３０が備える要素のうち、ルーバー５および第２筒部材３１が示されている。図５に示す例では、ルーバー５の風向板５１，５２，５３は軸ＡＸと平行に開いた状態となっている。 FIG. 5 is a schematic perspective view of the rotating unit 30. FIG. 5 shows the louver 5 and the second cylinder member 31 among the elements included in the rotating unit 30. In the example shown in FIG. 5, the wind direction plates 51, 52, and 53 of the louver 5 are open in parallel with the axis AX.
　第１風路ＡＤ１は、Ｘ－Ｚ平面（軸ＡＸに垂直な面）での断面積がほぼ一定のストレート状に構成されている。すなわち、第１風路ＡＤ１の開口２９側の断面積（開口面積）と整流板９４側の断面積とは、ほぼ同一とされている。これに対し、第２風路ＡＤ２は、Ｘ－Ｚ平面での断面積が下流へ向かって狭まる（徐変する）先細り状に構成されている。すなわち、第２風路ＡＤ２の吹出口３側の断面積は、整流板９４側の断面積、端的には第１風路ＡＤ１の断面積よりも縮小されている。 The first air passage AD1 is formed in a straight shape having a substantially constant cross-sectional area in the XX plane (plane perpendicular to the axis AX). That is, the cross-sectional area (opening area) of the first air passage AD1 on the opening 29 side and the cross-sectional area on the rectifying plate 94 side are almost the same. On the other hand, the second air passage AD2 is configured to have a tapered shape in which the cross-sectional area in the XX plane narrows (gradually changes) toward the downstream side. That is, the cross-sectional area of the second air passage AD2 on the outlet 3 side is smaller than the cross-sectional area of the straightening vane 94 side, in short, the cross-sectional area of the first air passage AD1.
　したがって図２、図３、および図５に示すように、第２筒部材３１は、整流板９４側の基端部３１ｂが大径部、吹出口３側の先端部３１ｃが小径部となっており、これらの中間部３１ｄが基端部３１ｂから先端部３１ｃまで徐々に内径が縮小する縮径部となっている。 Therefore, as shown in FIGS. 2, 3 and 5, the second cylinder member 31 has a large diameter portion at the base end portion 31b on the rectifying plate 94 side and a small diameter portion at the tip end portion 31c on the outlet 3 side. The intermediate portion 31d is a reduced diameter portion whose inner diameter gradually decreases from the base end portion 31b to the tip end portion 31c.
　基端部３１ｂは、フランジ３１１を有している。フランジ３１１は、第２筒部材３１の大径側に位置するフランジであり、保持機構１０の一部をなす。フランジ３１１の外周縁には、全周に亘って複数の噛合歯３１２が形成されている。これら複数の噛合歯３１２は、環状のギアを構成しており、モータ１１の噛合歯（図示省略）と噛み合うようになっている。 The base end portion 31b has a flange 311. The flange 311 is a flange located on the large diameter side of the second tubular member 31, and forms a part of the holding mechanism 10. A plurality of meshing teeth 312 are formed on the outer peripheral edge of the flange 311 over the entire circumference. These plurality of meshing teeth 312 form an annular gear and mesh with the meshing teeth (not shown) of the motor 11.
　先端部３１ｃは、フランジ３１３を有している。フランジ３１３は、第２筒部材３１の小径側に位置するフランジであり、先端部３１ｃの外周縁の全周に亘って拡径方向に延在している。フランジ３１３の外径寸法は、第２筒部材３１を第１筒部材９２に対して回動させる際に支障がないように、吹出口カバー４０の先端部４０ａの内径寸法よりも若干小さい。ただし、室内ユニット１を前方からみたときに、フランジ３１３と吹出口カバー４０の先端部４０ａとの間に目立った隙間のないように、フランジ３１３の外径寸法が設定されている。 The tip portion 31c has a flange 313. The flange 313 is a flange located on the small diameter side of the second tubular member 31, and extends in the diameter-expanding direction over the entire outer peripheral edge of the tip portion 31c. The outer diameter dimension of the flange 313 is slightly smaller than the inner diameter dimension of the tip portion 40a of the air outlet cover 40 so as not to hinder the rotation of the second cylinder member 31 with respect to the first cylinder member 92. However, the outer diameter dimension of the flange 313 is set so that there is no conspicuous gap between the flange 313 and the tip portion 40a of the air outlet cover 40 when the indoor unit 1 is viewed from the front.
　加えて、図２、図３および図５示すように、第２筒部材３１は、第２風路ＡＤ２の断面積をさらに狭める絞り部３１ｅを有している。絞り部３１ｅは、第２筒部材３１の内周面３１ｆの一部から第２風路ＡＤ２内に張り出した部分であり、張出量だけ第２風路ＡＤ２を狭めている。絞り部３１ｅにより、第２風路ＡＤ２の吹出口３側の断面積が整流板９４側、端的には開口２９側の断面積よりも狭まる。本実施形態において、絞り部３１ｅは、軸ＡＸに対して点対称の位置に一対をなして配され、第２風路ＡＤ２を差渡し方向（径方向）の両側から平行に狭めている。軸ＡＸは、第２風路ＡＤ２のＸ－Ｚ平面での断面の中心軸に相当する。 In addition, as shown in FIGS. 2, 3 and 5, the second cylinder member 31 has a throttle portion 31e that further narrows the cross-sectional area of the second air passage AD2. The throttle portion 31e is a portion that protrudes into the second air passage AD2 from a part of the inner peripheral surface 31f of the second cylinder member 31, and narrows the second air passage AD2 by the amount of protrusion. Due to the throttle portion 31e, the cross-sectional area of the second air passage AD2 on the air outlet 3 side is narrower than the cross-sectional area of the straightening vane 94 side, in short, the opening 29 side. In the present embodiment, the throttle portions 31e are arranged in pairs at positions symmetrical with respect to the axis AX, and the second air passage AD2 is narrowed in parallel from both sides in the delivery direction (diameter direction). The axis AX corresponds to the central axis of the cross section of the second air passage AD2 in the XX plane.
　一対の絞り部３１ｅは、第１辺ｅ１、第２辺ｅ２、第３辺ｅ３、第４辺ｅ４、第５辺ｅ５、第６辺ｅ６によってその形態が規定されている。　
　第１辺ｅ１は、室内ユニット１を前方からみたとき、吹出口３の輪郭を規定する円周上の二点を直線状に繋ぐ辺部である。一対の絞り部３１ｅの第１辺ｅ１は、これら絞り部３１ｅの直線状の部位となっている。第２辺ｅ２は、第１辺ｅ１の一端から軸ＡＸと平行に内周面３１ｆと接する辺部である。第３辺ｅ３は、第１辺ｅ１の他端から軸ＡＸと平行に内周面３１ｆと接する辺部であり、第２辺ｅ２と平行をなす。第４辺ｅ４は、第２辺ｅ２および第３辺ｅ３の第１辺ｅ１との連続端とは反対側の端同士を結んだ辺部であり、第１辺ｅ１と平行をなす。第５辺ｅ５は、第４辺ｅ４の一端から内周面３１ｆに沿って連続する辺部である。第６辺ｅ６は、第４辺ｅ４の他端から内周面３１ｆに沿って連続する辺部である。 The form of the pair of diaphragm portions 31e is defined by the first side e1, the second side e2, the third side e3, the fourth side e4, the fifth side e5, and the sixth side e6.
The first side e1 is a side portion that linearly connects two points on the circumference that define the contour of the air outlet 3 when the indoor unit 1 is viewed from the front. The first side e1 of the pair of diaphragm portions 31e is a linear portion of these throttle portions 31e. The second side e2 is a side portion that is in contact with the inner peripheral surface 31f in parallel with the axis AX from one end of the first side e1. The third side e3 is a side portion that is in contact with the inner peripheral surface 31f in parallel with the axis AX from the other end of the first side e1, and is parallel to the second side e2. The fourth side e4 is a side portion connecting the ends opposite to the continuous ends of the second side e2 and the first side e1 of the third side e3, and is parallel to the first side e1. The fifth side e5 is a side portion continuous from one end of the fourth side e4 along the inner peripheral surface 31f. The sixth side e6 is a side portion continuous from the other end of the fourth side e4 along the inner peripheral surface 31f.
　第１から第４辺ｅ１～ｅ４は、平坦面３１５を規定する。換言すれば、平坦面３１５は、第１から第４辺ｅ１～ｅ４を含む。平坦面３１５は、第２風路ＡＤ２へ向けて四辺形状に張り出す面部、換言すれば第２筒部材３１の外周面３１ａを四辺形状に凹ませる面部である。平坦面３１５は、風向板５１，５２，５３を取り付けるための一対の取付面３１５ａ，３１５ｂとされている。取付面３１５ａ，３１５ｂは、風向板５１，５２，５３の配列方向と交差する方向（図５に示す例ではＸ方向）において対向する。例えば、取付面３１５ａ，３１５ｂは風向板５１，５２，５３の配列方向に並ぶ三つの取付孔（図示省略）を有した平面である。取付孔には、風向板５１，５２，５３の軸部５４がそれぞれ挿入される。軸部５４は、風向板５１，５２，５３からＸ方向の両側へ一つずつそれぞれ突出するように設けられている。　
　上述したように、ルーバー駆動機構３３は、第２筒部材３１の外周面３１ａに設けられているが、その位置は絞り部３１ｅに対応している。具体的には、絞り部３１ｅの外周面３１ａ側、つまり外周面３１ａから凹んだ部分（以下、凹部３１０という）にルーバー駆動機構３３が配置されている。すなわち、絞り部３１ｅは、凹部３１０を有して構成されている。本実施形態において、凹部３１０は、第２風路ＡＤ２内に張り出した絞り部３１ｅを外周面３１ａ側からみた部分であり、第２筒部材３１において両者は実質的に一致する部分に当たる。 The first to fourth sides e1 to e4 define a flat surface 315. In other words, the flat surface 315 includes the first to fourth sides e1 to e4. The flat surface 315 is a surface portion that projects in a quadrilateral shape toward the second air passage AD2, in other words, a surface portion that dents the outer peripheral surface 31a of the second tubular member 31 into a quadrilateral shape. The flat surface 315 is a pair of mounting surfaces 315a, 315b for mounting the wind direction plates 51, 52, 53. The mounting surfaces 315a and 315b face each other in a direction intersecting the arrangement direction of the wind direction plates 51, 52 and 53 (X direction in the example shown in FIG. 5). For example, the mounting surfaces 315a and 315b are flat surfaces having three mounting holes (not shown) arranged in the arrangement direction of the wind direction plates 51, 52 and 53. The shaft portions 54 of the wind direction plates 51, 52, and 53 are inserted into the mounting holes, respectively. The shaft portion 54 is provided so as to project one by one from the wind direction plates 51, 52, 53 to both sides in the X direction.
As described above, the louver drive mechanism 33 is provided on the outer peripheral surface 31a of the second cylinder member 31, but its position corresponds to the throttle portion 31e. Specifically, the louver drive mechanism 33 is arranged on the outer peripheral surface 31a side of the throttle portion 31e, that is, a portion recessed from the outer peripheral surface 31a (hereinafter, referred to as a recess 310). That is, the diaphragm portion 31e is configured to have a recess 310. In the present embodiment, the recess 310 is a portion of the narrowing portion 31e protruding into the second air passage AD2 as viewed from the outer peripheral surface 31a side, and both correspond to substantially the same portion in the second cylinder member 31.
　図４に示す例では、取付面３１５ｂの背面側の凹部３１０にルーバー駆動機構３３が配置されているが、取付面３１５ａの背面側の凹部３１０にルーバー駆動機構３３が配置されていてもよい。なお、凹部３１０は、一対の絞り部３１ｅの一方のみが有していてもよい。一方の凹部３１０を省略する場合、絞り部３１ｅは、凹部３１０に相当する部分が第２筒部材３１の基材で埋められた形態とすればよい。図３に示すように、凹部３１０とルーバー駆動機構３３の間には断熱材３２が介在している。 In the example shown in FIG. 4, the louver drive mechanism 33 is arranged in the recess 310 on the back side of the mounting surface 315b, but the louver drive mechanism 33 may be arranged in the recess 310 on the back side of the mounting surface 315a. The recess 310 may be provided by only one of the pair of diaphragms 31e. When one of the recesses 310 is omitted, the throttle portion 31e may have a form in which the portion corresponding to the recess 310 is filled with the base material of the second cylinder member 31. As shown in FIG. 3, a heat insulating material 32 is interposed between the recess 310 and the louver drive mechanism 33.
　フランジ３１３の一部および絞り部３１ｅの前面３１ｓには、前方に突出する突起３１４が設けられている。絞り部３１ｅの前面３１ｓは、吹出口３の周縁と第１辺ｅ１で囲まれた面部である。突起３１４は、軸ＡＸに対して点対称の位置に一対をなして配置されている。ただし、突起３１４の数は、特に限定されない。図１、図３から図５に示す例のように二つであってもよいし、三つ以上、あるいは一つのみであってもよい。例えば、突起は、一対の絞り部３１ｅの一方にのみ設けられていてもよい。 A part of the flange 313 and the front surface 31s of the throttle portion 31e are provided with protrusions 314 protruding forward. The front surface 31s of the throttle portion 31e is a surface portion surrounded by the peripheral edge of the air outlet 3 and the first side e1. The protrusions 314 are arranged in pairs at positions symmetrical with respect to the axis AX. However, the number of protrusions 314 is not particularly limited. There may be two as in the examples shown in FIGS. 1, 3 to 5, three or more, or only one. For example, the protrusion may be provided only on one of the pair of diaphragm portions 31e.
　突起３１４は、第２筒部材３１を第１筒部材９２に対して手動で回動させる際、第２筒部材３１を回動させる力が作用される入力部であり、取っ手として機能する。第２筒部材３１を回動させる際には、突起３１４をつまんで、軸ＡＸを中心として周方向へ所望量だけ第２筒部材３１を回動させればよい。図１、図３から図５に示す例では、突起３１４は吹出口３の径方向に直線状に伸びた形態をなしているが、図示形態に限られない。例えば、突起の形態は、柱状（ボス）などであってもよい。あるいは、第２筒部材３１を回動させることが可能であれば、突起ではなく穴や溝などの凹状の形態であってもよい。この場合、これらの穴や溝などに指や治具などを引っ掛けて第２筒部材３１を回動させる。 The protrusion 314 is an input portion to which a force for rotating the second cylinder member 31 is applied when the second cylinder member 31 is manually rotated with respect to the first cylinder member 92, and functions as a handle. When rotating the second cylinder member 31, the protrusion 314 may be pinched and the second cylinder member 31 may be rotated by a desired amount in the circumferential direction around the shaft AX. In the examples shown in FIGS. 1 and 3 to 5, the protrusion 314 has a form extending linearly in the radial direction of the outlet 3, but is not limited to the illustrated form. For example, the shape of the protrusion may be a columnar shape (boss) or the like. Alternatively, if the second cylinder member 31 can be rotated, it may have a concave shape such as a hole or a groove instead of a protrusion. In this case, a finger or a jig is hooked on these holes or grooves to rotate the second cylinder member 31.
　また、本実施形態において、吹出口ユニット４のうち、少なくとも雰囲気（外気）に曝される部位は結晶性樹脂で形成されている。一例として、吹出口ユニット４を構成する各部材、具体的には吹出口カバー４０、風向板５１，５２，５３、整流板９４、第１筒部材９２、および第２筒部材３１は、いずれも結晶性樹脂で形成されている。結晶性樹脂としては、例えばポリプロピレン（ＰＰ）、ポリエチレン（ＰＥ）、ポリエチレンテレフタレート（ＰＥＴ）などが適用可能であるが、これらの例に限定されない。なお、上記の各部材に加えて、ファン９の羽根９１、ファンモータ９０のケースなども結晶性樹脂で形成してもよい。あるいは、これら各部材の基体を結晶性樹脂とは別の素材で形成し、該基体を結晶性樹脂でコーティングしてもよい。 Further, in the present embodiment, at least the portion of the outlet unit 4 exposed to the atmosphere (outside air) is formed of crystalline resin. As an example, each member constituting the outlet unit 4, specifically, the outlet cover 40, the wind direction plates 51, 52, 53, the straightening vane 94, the first cylinder member 92, and the second cylinder member 31 are all. It is made of crystalline resin. As the crystalline resin, for example, polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET) and the like can be applied, but the present invention is not limited to these examples. In addition to the above members, the blades 91 of the fan 9 and the case of the fan motor 90 may also be formed of crystalline resin. Alternatively, the substrate of each of these members may be formed of a material different from the crystalline resin, and the substrate may be coated with the crystalline resin.
　以上説明した室内ユニット１の構造であれば、温調されて風路ＡＤを通過し、吹出口３から吹き出される気流（以下、吹出風という）の風量の低下を抑えつつ、吹出風の到達距離を伸ばすことができる。 With the structure of the indoor unit 1 described above, the temperature is controlled, the airflow passes through the air passage AD, and the airflow from the airflow outlet 3 (hereinafter referred to as the airflow) is suppressed from decreasing, and the airflow reaches the airflow. You can extend the distance.
　すなわち、本実施形態において、風路ＡＤのうち、第１風路ＡＤ１を構成する第１筒部材９２は、Ｘ－Ｚ平面（軸ＡＸに垂直な面）での断面積がほぼ一定のストレート状に構成されている。これに対し、第２風路ＡＤ２を構成する第２筒部材３１は、中間部３１ｄが縮径部となっており、Ｘ－Ｚ平面での断面積が下流へ向かって狭まる（徐変する）先細り状に構成されている。このため、第１風路ＡＤ１の開口２９側の断面積（開口面積）を所望の大きさとして吹出風の風量を確保することができる。併せて、第１風路ＡＤ１と連通する第２風路ＡＤ２の吹出口３側の断面積を、第１風路ＡＤ１の断面積よりも縮小させることができるため、吹出風の到達距離を延長させることができる。 That is, in the present embodiment, among the air passages AD, the first cylinder member 92 constituting the first air passage AD1 has a straight shape having a substantially constant cross-sectional area in the XX plane (plane perpendicular to the axis AX). It is configured in. On the other hand, in the second cylinder member 31 constituting the second air passage AD2, the intermediate portion 31d is a reduced diameter portion, and the cross-sectional area in the XX plane narrows (gradually changes) toward the downstream side. It is structured in a tapered shape. Therefore, the air volume of the blown wind can be secured by setting the cross-sectional area (opening area) of the first air passage AD1 on the opening 29 side as a desired size. At the same time, the cross-sectional area of the second air passage AD2 communicating with the first air passage AD1 on the outlet 3 side can be made smaller than the cross-sectional area of the first air passage AD1, so that the reach of the blown wind can be extended. Can be made to.
　加えて、第２筒部材３１は、先細り状の第２風路ＡＤ２の断面積をさらに狭める絞り部３１ｅを有しているため、吹出風の到達距離をより一層延長させることができる。これにより、吹出風の到達距離の延長と風量増を効率よく両立させることが可能となる。したがって、空調対象の室内空間の温度を効率よく調整することができる。 In addition, since the second cylinder member 31 has a throttle portion 31e that further narrows the cross-sectional area of the tapered second air passage AD2, the reach of the blown wind can be further extended. As a result, it is possible to efficiently achieve both an extension of the reach of the blown wind and an increase in the air volume. Therefore, the temperature of the indoor space to be air-conditioned can be efficiently adjusted.
　また、絞り部３１ｅを有することで、第２筒部材３１には凹部３１０が形成され、凹部３１０にはルーバー駆動機構３３が配置されている。このため、凹部３１０がデッドスペースとならずに済み、適切なルーバー駆動機構３３の配置スペースを確保することができる。これにより、第２筒部材３１の外周面３１ａと吹出口カバー４０との間に余計なスペースを確保することなく、ルーバー駆動機構３３を配置できる。 Further, by having the throttle portion 31e, the recess 310 is formed in the second cylinder member 31, and the louver drive mechanism 33 is arranged in the recess 310. Therefore, the recess 310 does not become a dead space, and an appropriate louver drive mechanism 33 arrangement space can be secured. As a result, the louver drive mechanism 33 can be arranged without securing an extra space between the outer peripheral surface 31a of the second cylinder member 31 and the air outlet cover 40.
　さらに、ルーバー駆動機構３３が第２風路ＡＤ２内に出っ張ることもないため、ルーバー駆動機構３３が吹出風の通風を妨げずに済む。したがって、ルーバー駆動機構３３が吹出風の通風抵抗となって到達距離および風量に影響を与えることを防止できる。 Further, since the louver drive mechanism 33 does not protrude into the second air passage AD2, the louver drive mechanism 33 does not interfere with the ventilation of the blown air. Therefore, it is possible to prevent the louver drive mechanism 33 from acting as a ventilation resistance of the blown air and affecting the reachable distance and the air volume.
　フランジ３１３の一部には突起（取っ手）３１４が設けられているが、該取っ手３１４は絞り部３１ｅまで延在している。このため、取っ手３１４を配置するための専用スペースを別途設けることなく、操作しやすい大きな取っ手３１４を配置可能となる。したがって、第２筒部材３１をスムーズに回動させることができ、操作性の向上を図ることができる。これにより、ルーバー駆動機構３３による傾きの偏向のみならず、軸ＡＸを中心とするルーバー５（風向板５１，５２，５３）の周方向位置も変更可能となり、空調対象の室内空間の最適な方向へ吹出風を吹き出させることができる。 A protrusion (handle) 314 is provided on a part of the flange 313, and the handle 314 extends to the throttle portion 31e. Therefore, it is possible to arrange a large handle 314 that is easy to operate without separately providing a dedicated space for arranging the handle 314. Therefore, the second cylinder member 31 can be smoothly rotated, and the operability can be improved. As a result, not only the tilt deflection by the louver drive mechanism 33 but also the circumferential position of the louver 5 ( wind direction plates 51, 52, 53) centered on the axis AX can be changed, and the optimum direction of the indoor space to be air-conditioned can be changed. The wind can be blown out.
　本実施形態において、吹出口ユニット４を構成する吹出口カバー４０、風向板５１，５２，５３、整流板９４、第１筒部材９２、および第２筒部材３１は、いずれも結晶性樹脂で形成されている。これらの各部材は、例えばポリプロピレンなどの結晶性樹脂で構成されるため、加工が容易で量産性の向上を図ることができる。また、結晶性樹脂は、オイルミストや塗装溶剤などに対する耐性が高いため、これらの成分が雰囲気中に含まれる環境下であっても、吹出口ユニット４、ひいては室内ユニット１を長期に亘って使用することが可能となる。 In the present embodiment, the outlet cover 40, the wind direction plates 51, 52, 53, the straightening vane 94, the first cylinder member 92, and the second cylinder member 31 constituting the outlet unit 4 are all made of crystalline resin. Has been done. Since each of these members is made of a crystalline resin such as polypropylene, it is easy to process and mass productivity can be improved. Further, since the crystalline resin has high resistance to oil mist, coating solvent, etc., the outlet unit 4 and eventually the indoor unit 1 can be used for a long period of time even in an environment where these components are contained in the atmosphere. It becomes possible to do.
　以上、本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。 Although some embodiments of the present invention have been described above, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.
　１…室内ユニット、２…筐体、３…吹出口、４…吹出口ユニット、５…ルーバー、６…熱交換器、８…制御部、９…ファン、１０…保持機構、３０…回動ユニット、３１…第２筒部材、３１ａ…外周面、３１ｂ…基端部、３１ｃ…先端部、３１ｄ…中間部、３１ｅ…絞り部、３１ｆ…内周面、３１ｓ…前面、３１０…凹部、３１１…フランジ、３１２…噛合歯、３１３…フランジ、３１４…突起（取っ手）、３１５…平坦面、３１６ａ，３１６ｂ…取付面、３２…断熱材、３３…ルーバー駆動機構、３４…モータ、４０…吹出口カバー、４０ａ…先端部、５１，５２，５３…風向板、９０…ファンモータ、９１…羽根、９２…第１筒部材、９４…整流板、ＡＤ…風路、ＡＤ１…第１風路、ＡＤ２…第２風路、ＡＸ…軸。 1 ... Indoor unit, 2 ... Housing, 3 ... Blowout, 4 ... Blowout unit, 5 ... Louver, 6 ... Heat exchanger, 8 ... Control unit, 9 ... Fan, 10 ... Holding mechanism, 30 ... Rotating unit , 31 ... 2nd cylinder member, 31a ... outer peripheral surface, 31b ... base end portion, 31c ... tip portion, 31d ... intermediate portion, 31e ... squeezing portion, 31f ... inner peripheral surface, 31s ... front surface, 310 ... recessed portion 311 ... Flange, 312 ... meshing teeth, 313 ... flange, 314 ... protrusion (handle), 315 ... flat surface, 316a, 316b ... mounting surface, 32 ... heat insulating material, 33 ... louver drive mechanism, 34 ... motor, 40 ... outlet cover , 40a ... tip, 51, 52, 53 ... wind direction plate, 90 ... fan motor, 91 ... blade, 92 ... first cylinder member, 94 ... rectifying plate, AD ... air passage, AD1 ... first air passage, AD2 ... 2nd air passage, AX ... axis.

Claims (6)

  1. 　熱交換器と、
    　前記熱交換器を収容し、前記熱交換器と対向する開口を有する筐体と、
    　前記熱交換器で熱交換された空気の気流を発生させるファンと、
    　前記気流を室内空間に吹き出す吹出口を有し、前記開口側から前記吹出口側まで連続して前記気流が通過する風路を構成する筒部材と、
    　前記吹出口から吹き出される前記気流の傾きを調整する風向板と、を備え、
    　前記筒部材は、前記風路の前記吹出口側の断面積を前記開口側の断面積よりも前記風路の差渡し方向の両側からそれぞれ狭める一対の絞り部を有する
    　空気調和機の室内ユニット。     With a heat exchanger
    A housing that houses the heat exchanger and has an opening facing the heat exchanger.
    A fan that generates an air flow of air that has been heat-exchanged by the heat exchanger,
    A tubular member having an air outlet that blows the air flow into the indoor space and forming an air passage through which the air flow continuously passes from the opening side to the air outlet side.
    A wind direction plate for adjusting the inclination of the airflow blown out from the outlet is provided.
    The tubular member is an indoor unit of an air conditioner having a pair of throttle portions that narrow the cross-sectional area of the air passage on the outlet side from both sides of the air passage in the delivery direction with respect to the cross-sectional area of the opening side.
  2. 　一対の前記絞り部は、前記風路の差渡し方向の両側から前記風路の前記吹出口側の断面積を平行に狭める直線状の部位を有する
    　請求項１に記載の空気調和機の室内ユニット。     The indoor unit of the air conditioner according to claim 1, wherein the pair of the throttle portions has linear portions that narrow the cross-sectional area of the air passage on the outlet side in parallel from both sides in the delivery direction of the air passage. ..
  3. 　一対の前記絞り部は、前記風向板が取り付けられる平坦状の取付面を有し、
    　前記取付面は、前記直線状の部位を一辺として含む
    　請求項２に記載の空気調和機の室内ユニット。     The pair of throttle portions has a flat mounting surface on which the wind direction plate is mounted.
    The indoor unit of the air conditioner according to claim 2, wherein the mounting surface includes the linear portion as one side.
  4. 　前記風向板を所定の傾きに回動させる駆動機構を備え、
    　一対の前記絞り部のうち、少なくとも一方は、前記風路に張り出すように前記筒部材の外周面から凹んだ凹部を有し、
    　前記駆動機構は、前記凹部に配置されている
    　請求項１に記載の空気調和機の室内ユニット。     A drive mechanism for rotating the wind direction plate to a predetermined inclination is provided.
    At least one of the pair of throttle portions has a recess recessed from the outer peripheral surface of the tubular member so as to project into the air passage.
    The indoor unit of the air conditioner according to claim 1, wherein the drive mechanism is arranged in the recess.
  5. 　前記吹出口の中心軸を中心として前記筒部材を回動可能に保持する保持機構を備え、
    　一対の前記絞り部のうち、少なくとも一方は、前記筒部材を回動させる力が作用される入力部を有する
    　請求項１に記載に空気調和機の室内ユニット。     A holding mechanism for rotatably holding the tubular member around the central axis of the air outlet is provided.
    The indoor unit of an air conditioner according to claim 1, wherein at least one of the pair of throttle portions has an input portion on which a force for rotating the tubular member is applied.
  6. 　前記筒部材の外周面側を覆うカバーと、
    　前記気流を整流する整流板と、を備え、
    　前記筒部材、前記風向板、前記整流板、および前記カバーは、少なくとも雰囲気に曝される部位が結晶性樹脂でそれぞれ形成されている
    　請求項１から５のいずれか一項に記載の空気調和機の室内ユニット。     A cover that covers the outer peripheral surface side of the tubular member,
    A rectifying plate for rectifying the airflow is provided.
    The air conditioner according to any one of claims 1 to 5, wherein the tubular member, the wind direction plate, the straightening vane, and the cover are each formed of a crystalline resin at least in a portion exposed to the atmosphere. Indoor unit.
PCT/JP2020/013337 2020-03-25 2020-03-25 Indoor unit for air conditioner WO2021192093A1 (en)

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