JP7197826B2 - Ceiling-mounted air conditioner - Google Patents

Description

TECHNICAL FIELD The present invention relates to a ceiling-mounted air conditioner, and more particularly to the structure of an indoor unit.

In a ceiling-mounted air conditioner, an outdoor unit installed outdoors and an indoor unit installed above the ceiling of an air-conditioned room are connected by gas pipes and liquid pipes to form a refrigerant circuit. The indoor unit has a box-shaped main unit embedded in the ceiling, and a decorative panel arranged on the ceiling on the side of the air conditioning room and attached to the main unit.

As an example, in the invention described in Patent Document 1, a ventilation fan formed by a U-shaped heat exchanger in a main unit, a fan casing in the center of this heat exchanger, and a sirocco fan surrounded by the fan casing is provided. The decorative panel has an air outlet in the center and an air inlet along the three lower sides of the heat exchanger.

Then, the air sucked from the suction port can be heat-exchanged with the refrigerant by the heat exchanger and blown out in one direction from the blow-out port. By surrounding the fan with a heat exchanger, the distance between the fan and the surface of the heat exchanger becomes almost constant, and the air velocity and volume of the air passing through the heat exchanger is less uneven, making the heat exchanger more effective. can be used to increase the heat exchange capacity.

JP-A-2000-213767

By the way, in order to expand the air blowing range in the ceiling-mounted air conditioner, the applicant of the present application proposed to provide a rotating unit as a movable blowing part in addition to the fixed blowing part in the air blowing part of the decorative panel. (For example, Japanese Patent Application No. 2018-104520).

In this case, the rotating unit has, for example, a truncated cone shape that rotates about an axis orthogonal to the virtual plane on the back side of the decorative panel, and an air blower that blows conditioned air along the panel surface of the decorative panel on the side surface thereof. It is configured to have an exit.

The bases of both the fixed blowout part and the movable blowout part (rotary unit) are screwed to the decorative panel, but the screwed parts (mounting parts) need to be hidden from the outside. However, it takes a lot of time and effort to blind each location of the screwing portion with a blindfold member.

Therefore, an object of the present invention is to provide a ceiling-mounted air conditioner in which even if individual parts are screwed, their screwed parts (mounting parts) can be hidden with a single blind part. to do.

In order to solve the above-described problems, the present invention includes a box-shaped main unit arranged in the ceiling of an air-conditioned room, and a decorative panel attached to the bottom surface of the main unit along the ceiling surface of the air-conditioned room. an air intake portion and an air blowout portion are arranged adjacent to each other on the decorative panel;
The air blowing part has a protuberance having an oval shape in a plan view, which is formed by protruding a part of the decorative panel toward the air conditioning room. and a movable blowing part, wherein the movable blowing part is a truncated cone-shaped rotating unit rotatable about an axis orthogonal to a virtual plane on the back side of the decorative panel parallel to the bottom surface of the main unit. semicircular portions are formed at both ends of the raised portion by a portion of the rotating unit; In a ceiling-mounted air conditioner provided with a second air outlet,
A partition plate unit arranged on the back side of the decorative panel and to which the fixed blowout part and the movable blowout part are attached; a main surface panel portion covering the lower side of the fixed blowout portion with a flat surface having the same height as the surface; a rear panel portion formed between the suction portion,
Both ends of the main surface panel portion are formed with arcuate portions that match a portion of the edge of the top surface of the rotating unit, and both ends of the rear panel portion are formed with skirts along the conical surface of the rotating unit. A portion is formed, and the outer shape of the protuberance is formed by the cover panel, and attachment portions of the fixed blow-out portion and the movable blow-out portion to the partition plate unit are hidden.

In the present invention, a dummy flap is arranged between the fixed blowing part and the rotating unit to make it appear that the air blowing holes are continuous, and the back part of the dummy flap is also the main panel. The aspect covered with is also included.

Further, an engaging claw to be engaged with the edge of the first air outlet and an engaging claw for the dummy flap are formed on the front edge of the main panel portion, and the rear panel portion is provided with an engaging claw to be engaged with the edge of the first air outlet. The present invention also includes a mode in which a screwing piece screwed to the inside of the air suction portion is provided on the rear edge of the air suction portion.

In the present invention, the circular arc portion and the skirt portion are formed continuously, and the rotary unit is partially covered by the circular arc portion and the skirt portion.

According to the present invention, a single cover panel can hide the attachment portions of the fixed blowout portion and the movable blowout portion to the decorative panel at a plurality of locations.

FIG. 2 is an explanatory diagram showing an installation state of the ceiling-embedded air conditioner according to the present invention; The perspective view which shows the said ceiling embedded air conditioner. FIG. 2 is an exploded perspective view of the ceiling-embedded air conditioner. 3 is a schematic cross-sectional view taken along line AA of FIG. 2; FIG. 5 is a schematic cross-sectional view taken along line CC of FIG. 4; FIG. 3 is a schematic cross-sectional view taken along line BB of FIG. 2; FIG. 5 is a schematic cross-sectional view taken along line DD of FIG. 4; FIG. FIG. 3 is a perspective cross-sectional view taken along line BB of FIG. 2; FIG. 2 is a bottom side perspective view of a main unit included in the ceiling-embedded air conditioner. (a) A perspective view showing a decorative panel and a frame separated from each other, (b) A perspective view showing a packing state of the decorative panel. The bottom view which looked at the decoration panel at the time of stop of operation from the air conditioning room side. The bottom view which looked at the decoration panel at the time of operation|movement from the air conditioning room side. FIG. 13 is a perspective view of FIG. 12; The perspective view which shows the partition plate unit attached to the back side of a decorative panel. The perspective view which shows the central blowing unit attached to a partition plate unit. The perspective view which shows the rotation unit attached to a partition plate unit. (a) An exploded perspective view showing a frame that supports the partition unit, (b) A perspective view showing a state in which the frame is arranged on the back surface of the decorative panel. FIG. 4 is an external perspective view showing a fan unit and a movable blowing part; FIG. 4 is an exploded perspective view showing a partition plate unit including driving means for the rotation unit; The perspective view which shows the rotation unit with which the rotation ring was attached. The top view which shows a rotating ring. FIG. 2 is an exploded perspective view showing a motor unit; FIG. 4 is a plan view showing a portion of the partition unit including openings to which rotating rings are attached; FIG. 4 is a perspective view showing a stabilizer seat for preventing lateral rattle of the rotating ring; Sectional drawing which shows the state to which the stabilizer was attached. FIG. 4 is a perspective view showing a projecting piece for preventing backlash in the vertical direction of the rotating ring; The perspective view which shows the back side of a duct cover. FIG. 5 is a cross-sectional view for explaining the function of lateral rattling of the rotating ring due to the projecting pieces. The bottom view which shows a rotating ring. FIG. 4 is a cross-sectional view showing the outer flange of the rotating ring with seals attached; FIG. 4 is a perspective view showing an improved fan unit; The top view which shows the said fan unit. FIG. 4 is a perspective view showing an electrical component box and a cable storage section attached to the outer body; (a) A perspective view showing the cable storage section and the drain pan separately, (b) A plan view showing the cable storage section alone. (a) Perspective view showing a state in which a part of the lid attached to the opening of the electrical component box (second lid) is removed, (b) showing a state in which the opening of the electrical component box is closed with the lid. Perspective view. (a) A perspective view for explaining an opening window formed in a side panel, (b) A perspective view showing a state in which a part of a lid body (second lid portion) is taken out from the opening window. (a) and (b) are perspective views for explaining a configuration in which a decorative panel can be hung from the main unit. The perspective view which shows the hanging tool and hook which hang a decorative panel to a main unit. FIG. 4 is a perspective view showing motor lead wires drawn into the blower chamber through a drain pan; FIG. 4 is a perspective view showing a water trap formed on a motor lead of a fan motor; FIG. 4 is a plan view showing a partition unit in which a motor lead wire connected to a wind direction plate driving motor mounted on the rotation unit is wired; FIG. 42 is a partially enlarged plan view of FIG. 41 for explaining motor lead wires when the rotating unit is in the first rotating position; FIG. 43 is a partially enlarged plan view similar to FIG. 42 for explaining motor lead wires when the rotating unit is in the second rotating position; The top view which shows the wiring cover attached to a wiring storage part. (a) and (b) are perspective views showing a state in which the air blowing part is assembled to the decorative panel. (a) and (b) are front perspective views showing a state in which a cover panel is attached to a fixed blowout portion of the air blowout portion. (a) and (b) are perspective views of the cover panel as seen from the rear. (a) A plan view and (b) a cross-sectional view showing an enlarged portion of the dot embossing used for preventing dripping. FIG. 4 is a perspective view showing a portion of the air blowing portion where dot embossing is provided;

Several modes for carrying out the present invention will be described in detail below as examples based on the accompanying drawings. However, the present invention is not limited to this.

In the air conditioner according to the present invention, an outdoor unit (not shown) installed outdoors and an indoor unit 1 attached to the ceiling T1 of an air conditioning room R are connected by a gas pipe and a liquid pipe (both not shown) to form a refrigerant circuit. to form

Referring to FIGS. 1 to 3, an indoor unit 1 according to this embodiment includes a box-shaped main unit 10 embedded in the ceiling space T2, and a main unit 10 arranged on the air conditioning room R side of the ceiling T1. It is a ceiling-mounted air conditioner having a decorative panel 70 attached to the bottom surface 101 of the ceiling, and is particularly an omnidirectional ceiling-mounted air conditioner that blows conditioned air over a wide range.

Referring to FIG. 3, main unit 10 has a rectangular top plate 111 made of sheet metal, and a box-shaped outer body 11 made up of side plates 112 and 113 extending downward from the four sides of top plate 111 . . A side plate 112 is the side plate on the long side of the top plate 111, and a side plate 113 is the side plate on the short side of the top plate 111. Two mounting brackets 12 are fixed to the two facing side plates 113, respectively.

The main unit 10 is installed in the ceiling space T2 by suspending the mounting bracket 12 from a plurality of suspension bolts (not shown) fixed to the ceiling space T2.

The decorative panel 70 includes a panel portion 71 that forms the main body of the rectangular decorative panel 70 larger than the top plate 111, and a box-shaped outer body 11 that is erected from the rear surface 70R of the panel portion 71 toward the main unit 10 and has an opening. It has a side wall portion 72 attached to the bottom surface (bottom surface 101 of the main unit 10) to match its size.

The panel portion 71 includes an air intake portion 73 having a square opening on one side 70b existing behind the long sides facing the one side 70b, and an air blowing portion on the other side 70a existing in front of the long side facing the one side 70b. It has 74.

Referring to FIG. 10(a), a portion of the panel portion 71 where the air intake portion 73 and the air blowout portion 74 are provided is a panel body 71a, and side panels 71b are integrally formed on both left and right sides of the panel body 71a. It is In FIG. 10(a), 71bR is the right side panel and 71bL is the left side panel.

In the indoor unit 1 in FIG. 2, the direction of the top plate 111 is the upper side or the upper side, the direction of the air conditioning room R is the bottom side or the lower side, the air blowing portion 74 side is the front side or front side, the air suction portion 73 side is the rear side or rear side, and the left side is the left side. In the following description, the short side 70c side of is referred to as the left side or left side, and the right short side 70d side is referred to as the right side or right side. The same applies to each component.

As shown in FIG. 10A, the side wall portion 72 has an air intake portion 73 and an air blowout portion 73 formed in a square shape along each side (long sides 70a, 70b, short sides 70c, 70d) of the panel portion 71. A frame 721 having a size surrounding the portion 74, and a beam 722 bridged between the short sides of the frame 721 (sides on the short sides 70c and 70d of the panel portion 71). 70) are screwed together.

Both the frame 721 and the beams 722 are made of sheet metal, and the beams 722 are arranged on the partition portion 713 formed between the air intake portion 73 and the air blowout portion 74 of the panel portion 71 .

According to this, as shown in FIG. 10(b), when the decorative panel 70 is packed, by pressing the beam 722 with the projection on the side of the packing material, it is possible to prevent damage due to impact such as dropping. Become. In addition, by providing the beams 722, the structure can withstand the load applied in the direction parallel to the panel surface 70S of the decorative panel 70. FIG.

The beam 722 may be bridged between the long sides 70a and 70b of the frame 721 according to the shape and arrangement of the air suction portion 73, the air blowout portion 74, and the like.

≪Outer body≫
Next, the parts housed in the main unit 10 will be described with reference to FIGS. 3 to 6. FIG. The inner surface of the top plate 111 of the outer body 11 is provided with a heat insulating material 13 formed of thick expanded polystyrene.

The inner surfaces of the side plates 112 and 113 of the outer shell 11 may be provided with a thin heat insulating sheet (not shown) instead of the heat insulating material 13 . The center of the heat insulating material 13 is opened so that a part of the top plate 111 is exposed when viewed from below. The heat exchanger 20 and the fan unit 30 are fixed to this exposed portion of the top plate 111 .

As shown in FIGS. 2 and 3, an electrical component box 14 containing electrical components (not shown) for controlling the indoor unit 1 is attached to the outer surface of the right side surface of the outer shell 11 .

≪Heat Exchanger≫
The heat exchanger 20 is a fin tube type formed of a plurality of strip-shaped aluminum fins 23 arranged in parallel and a plurality of heat transfer tubes 22 passing through the aluminum fins 23, and is two heat exchangers separated from each other. As a part, two heat exchange parts are provided: a front heat exchange part (first heat exchange part) 20L on the left side in FIG. 4 and a rear heat exchange part (second heat exchange part) 20R on the right side in FIG. .

The front heat exchange section 20L and the rear heat exchange section 20R are attached to the top plate 111 so as to face each other. The front heat exchange section 20L and the rear heat exchange section 20R may be arranged substantially perpendicular to the top plate 111 and parallel to each other. As shown in FIG. 4, they are combined in an inverted V shape in which the interval (distance) on the upper end side is wider (longer) than the interval (distance) on the lower end side. Instead of the inverted V shape, a V shape in which the interval (distance) on the upper end side is narrower (shorter) than the interval (distance) on the lower end side may be used.

In any case, the left and right ends of the front heat exchange section 20L and the rear heat exchange section 20R are connected by connecting plates 21, 21, respectively. As a result, the space inside the heat exchanger 20 becomes a fan chamber F whose left and right ends are blocked by the connecting plates 21 , 21 . The bottom surface of the heat exchanger 20 (the surface between the lower ends of the front heat exchange section 20L and the rear heat exchange section 20R) is closed by a drain pan 40, which will be described later.

In this way, since the left and right ends of the front heat exchange section 20L and the rear heat exchange section 20R are blocked by the connecting plates 21, 21, all the air sucked from the air suction section 73 is transferred to the front heat exchange section 20L. Since the air passes through the rear heat exchange section 20R, there is no wasteful flow of air, and the heat exchange capacity is further enhanced.

In addition, in the space between the heat exchanger 20 and the outer shell 11, a first air intake chamber S1 is provided between the outer shell 11 and the rear heat exchanging part 20R, and between the outer shell 11 and the front heat exchanging part 20L. A second air suction chamber S2 is provided therebetween. The first air suction chamber S1 is arranged directly above the air suction portion 73, and the second air suction chamber S2 communicates with the air suction portion 73 via an air guide passage L, which will be described later.

≪Blower fan≫
The fan unit 30 is arranged in a fan chamber F provided inside the heat exchanger 20 . The fan unit 30 includes a sirocco fan type blower fan 31 , a fan motor 36 , a fan mount 311 (see FIG. 3 ) for supporting the blower fan 31 and fixing it to the top plate 111 , and fixing the fan motor 36 to the top plate 111 . A motor mounting base 361 (see FIG. 3) is provided.

The blower fan 31 includes a cylindrical impeller (sirocco fan) 32 having a plurality of blades, a spiral fan casing 34 housing the impeller 32, and a rotating shaft 35 connected to the center of the impeller 32. have.

The number of the blower fans 31 is arbitrarily selected according to the required air conditioning capacity, but in this embodiment, four fans are coaxially arranged side by side. Each blower fan 31 has the same structure.

In the fan unit 30 , the fan motor 36 is fixed to the top plate 111 by the motor mount 361 , and then two blowing fans 31 are connected to each end of the fan motor 36 by the rotary shaft 35 . Both ends of the rotary shaft 35 are fixed to the top plate 111 via bearing plates (not shown) made up of, for example, L-shaped fittings. Further, there is also a fan fixing portion 341 (see FIG. 4) on the upper portion of the fan casing 34, which is fixed to the top plate 111 with screws.

The fan casing 34 has an accommodation portion 342 that accommodates the impeller 32 , and a cylindrical air blowing portion 343 formed continuously from the accommodation portion 342 and extending downward from the lower end of the heat exchanger 20 . A fan suction port 344 for taking air into the impeller 32 is opened in a circular shape on a side surface of the accommodation portion 342 .

The fan casing 34 may be divided vertically on a plane parallel to the axis of the impeller 32 so that the impeller 32 can be accommodated therein, or may be divided horizontally on a plane perpendicular to the axis of the impeller 32 . It may be formed separately. In addition, inside the fan casing 34 , the accommodating portion 342 and the air blowing portion 343 are connected to form the air blowing passage 33 of the blown air H. As shown in FIG.

As described above, in this embodiment, since the fan unit 30 is arranged with the internal space surrounded by the heat exchanger 20 as the blower chamber F, when the impeller 32 of the blower fan 31 rotates, the air blower chamber The pressure inside F becomes negative, and the air from the air suction section 73 passes through the front heat exchange section 20L and the rear heat exchange section 20R, enters the blower chamber F, is sucked into the fan suction port 344, and flows around the impeller 32. The discharged air is blown in one direction along the air passage 33 in the fan casing 34 and is blown out from the air blowing part 74 to the air conditioning room R.

≪Drain pan≫
A drain pan 40 for receiving drain water generated in the heat exchanger 20 is provided at the lower end of the heat exchanger 20 . The drain pan 40 is integrally formed with a heat insulating member 41 made of expanded polystyrene and a resin drain sheet 42 provided on a surface facing the heat exchanger 20 .

The drain pan 40 is formed in a rectangular shape having a size that covers the opening surface on the lower end side of the heat exchanger 20, and also serves as a partition plate that separates the fan chamber F from the air guide path L described later. The drain pan 40 is provided with ventilation holes 43 in which the tubular blowing portions 343 of the fan unit 30 are fitted, corresponding to the number of the blowing fans 31 (four in this embodiment).

As described above, the heat exchanger 20 has the front heat exchange section 20L and the rear heat exchange section 20R arranged in an inverted V shape, and the bottom surface is narrower than the top surface. The area occupied by the drain pan 40 in the main unit 10 is reduced, the ventilation resistance due to the drain pan 40 is reduced, and the ventilation area around the drain pan 40 is expanded to improve the ventilation efficiency.

A gutter portion 45 is provided on the drain sheet 42 side of the drain pan 40 to receive the drain water generated in the heat exchanger 20 . Since the drain pan 40 receives condensed water generated on the outer surface side of the fan casing 34 during cooling operation, it is preferable to perform waterproofing around the ventilation holes 43 .

Although not shown, the drain pan 40 may be provided with a drain pump and a drain hose for draining drain water, and a float switch for turning on/off the drain pump.

≪Decorative panel≫
The configuration of the decorative panel 70 will be described with reference to FIGS. 11 to 13. FIG. The decorative panel 70 has an air blowing portion 74 on one long side 70a and an air suction portion 73 on the other long side 70b. is formed as a protruding portion 740 protruding along the long side 70a toward the air conditioning room R side to have a trapezoidal cross section. A suction grille 731 having an air filter is detachably attached to the air suction portion 73 .

According to this embodiment, the protuberance 740 is an elliptical rounded rectangle consisting of two parallel lines of equal length and two half circles, and has inclined sides (peripheral surfaces). The air blowing portion 74 has a fixed blowing portion 75 at the central portion of the raised portion 740, and has movable blowing portions 77L and 77R on both left and right sides. When it is not necessary to distinguish between the movable blowing portions 77L and 77R, they are collectively referred to as the movable blowing portion 77. As shown in FIG.

Also referring to FIG. 16, the movable blowout portion 77L rotates within a predetermined angular range about an axis orthogonal to a virtual plane on the back surface 70R side of the decorative panel 70 parallel to the bottom surface 101 of the main unit 10. It has a truncated conical rotation unit 78L. Similarly, the movable blowout part 77R is a truncated conical rotating unit 78R that rotates within a predetermined angular range about an axis perpendicular to the imaginary plane on the back surface 70R side of the decorative panel 70 that is parallel to the bottom surface 101 of the main unit 10. have. The virtual plane on the side of the rear surface 70R of the decorative panel 70 is also parallel to the ceiling surface T1 of the air conditioning room R.

Semi-circular portions are formed at both ends of the raised portion 740 by part of the rotating units 78L and 78R. Incidentally, when there is no need to distinguish between the rotating units 78L and 78R, they are collectively referred to as the rotating unit 78.

As can be seen from the perspective view of FIG. 13, the top surface (bottom surface) 751 of the fixed blowing part 75 and the top surface (bottom surface) 781 of the rotating unit 78 are always on the same plane even when the rotating unit 78 is rotated. It is designed to improve designability.

The fixed blow-out portion 75 has a trapezoidal cross-section, and a first air blow-out port 754 is opened toward the long side (specific side) 70 a on the side of the front long side (specific side) 70 a. A horizontal airflow direction plate 752 (see FIG. 15) is provided inside, and a vertical airflow direction plate 753 is provided on the opening surface of the first air outlet 754 .

The movable blowout part 77 has a second air blowout port 783 on a part of the side surface of the rotating unit 78 , and the second air blowout port 783 is provided with a vertical wind direction plate 782 . Since the rotation of the rotating unit 78 changes the direction of the wind in the horizontal direction, the movable blowing part 77 does not need a horizontal wind direction plate. The first air outlet 754 of the fixed outlet 75 and the second air outlet 783 of the movable outlet 77 have the same inclination angle in order to give the air outlets 754 and 783 a sense of design unity. It is open along the side with.

The fixed blowout portion 75 blows air in the direction of the long side 70a, while the movable blowout portion 77 has a second air blowout port 783 at a first position facing the long side 70a and at a second position facing the short sides 70c and 70d. 2 positions, and blows out the conditioned air sent from the blower fan 31 within this rotation range in a predetermined direction.

As shown in FIG. 11, when the movable blowout portion 77 is at the first position, the first air blowout port 754 and the second air blowout port 783 are arranged in a straight line. In this case, it is preferable to provide dummy flaps 791, 791 on both sides of the first air outlet 754 in order to make the appearance that the first air outlet 754 and the second air outlet 783 are continuous. The dummy flap 791 is also arranged on the same inclined surface as the first air outlet 754 and the second air outlet 783 .

12 and 13 show a state in which the left movable blowout portion 77L is at the first position and the right movable blowout portion 77R is at the second position facing the short side 70d. Since the movable blowing part 77 is rotatable, the indoor unit 1 is an omnidirectional (multidirectional) blowing type capable of blowing conditioned air in all directions except for the direction of the rear long side 70b. .

Further, as shown in FIGS. 12 and 13, even if the second air outlet 783 of the movable outlet 77 (77L) is rotated to the second position facing the short side, other than the second air outlet 783 Since the portion has a conical side surface, a sense of continuity with the first air outlet 754 can be obtained in terms of appearance. That is, even if the movable blowout portion 77 is rotated, the basic shape (elliptical raised shape) of the air blowout portion 74 is maintained.

According to this embodiment, the first air outlet 754 of the fixed outlet 75 and the second air outlet 783 of the movable outlet 77 protrude in a trapezoidal cross-sectional shape toward the air conditioning room R at a portion of the panel section 71. As a result, the conditioned air is blown substantially horizontally along the panel surface 70S of the decorative panel 70 from the first air outlet 754 and the second air outlet 783. Therefore, the conditioned air can spread over a longer distance.

Also, the conditioned air is blown out from the first air outlet 754 and the second air outlet 783 at the same time. It is difficult for a boundary to occur with the flow, and the interior of the air-conditioned room R can be evenly harmonized.

Note that, unlike the above embodiment, the first air outlet 754 and the second air outlet 783 may open in a vertical plane perpendicular to the panel surface (or ceiling surface) of the decorative panel 70 .

In addition, in the above-described embodiment, the fixed blow-out portion 75 and the left and right movable blow-out portions 77 are housed in the oval raised portion 740 , but the movable blow-out portion 77 is parallel to the bottom surface 101 of the main unit 10 . As long as it is rotatable about an axis perpendicular to the virtual plane on the back surface 70R side, the movable blowout part 77 may be simply arranged on both sides of the fixed blowout part 75 regardless of the appearance. , such aspects are also included in the present invention.

A partition plate unit 50 shown in FIG. 14 is attached to the rear surface 70R side of the decorative panel 70 . 4 and 9, etc., the partition plate unit 50 has four ventilation holes 43 (43a to 43d; see FIG. 9), and has four ducts 51 (51a to 51d) communicating with the air blowing portion 343 of the fan unit 30. As shown in FIG.

In this embodiment, the ventilation holes 43 (43a to 43d) are square holes, and the ducts 51 (51a to 51d) fitted therein are square tubular (square tubular). ) extends to the rear surface 70R of the decorative panel 70 as a rectangular tube.

Of these, the two inner ducts 51a and 51b are fitted into the corresponding ventilation holes 43a and 43b, respectively, and the two outer ducts 51c and 51d are fitted into the corresponding ventilation holes 43c and 43d, respectively. match.

The ducts 51a and 51b are ducts for the fixed blowout portion 75. As shown in FIG. 15, on the lower surface side of the partition plate unit 50, there is a central chamber 751a allocated across the ducts 51a and 51b. A blowout unit 751 is attached.

A left/right wind direction plate 752 is provided in the chamber 751a. A first air outlet 754 is formed on the front side of the central outlet unit 751, and a vertical wind direction plate 753 is provided therein.

Although not shown, a motor for driving the left/right airflow direction plate 752 is arranged on the rear surface of the chamber 751a, and a motor for driving the up/down direction plate 754 is arranged on the side of the first air outlet 754.

The outer ducts 51c and 51d are ducts for the movable blowout portion 77, and as shown in FIG. 16, a rotation unit 78L provided for the left movable blowout portion 77L is rotatably attached to the lower end of the left duct 51c. A rotation unit 78R included in the right movable blowing part 77R is rotatably attached to the lower end of the right duct 51d.

Both the rotating units 78L and 78R are driven by motors. The motor that drives this rotary unit 78 is located in a motor cover 512 shown beside the outer ducts 51c, 51d in FIG.

In this embodiment, the rotation units 78L and 78R are each rotatable from the first position to a position of 90° or more, for example, 100° as the second position. A short-circuit phenomenon may occur in which the air is sucked into the air suction section 73 instead of going to the air conditioning room R.

In order to prevent this, a wall 711 is provided between the rotating unit 78 and the air suction portion 73, referring to FIGS.

In this embodiment, the wall 711 is configured such that a portion of the panel portion 71 around the rotation unit 78 is directed between the rotation units 78L, 78R and the air suction portion 73 from the short sides 70c, 70d, and the top surface of the rotation unit 78 is formed. It is formed in the shape of a slope that rises up to the height of 781 or the height of the air suction portion 73 . 11 to 13 show that the ridgeline 711a of the wall 711 is sloped.

According to this, the wall 711 prevents the short-circuit phenomenon when the rotation unit 78 is rotated to the vicinity of the maximum rotation position, and the blowing airflow spreads farther along the slope surface 712 of the wall 711. It will be. That is, the wall 711 not only prevents the short-circuit phenomenon, but also functions as an air flow guide surface for spreading the blown air over a longer distance by providing the slope surface 712 .

According to this embodiment, the air blown out from the first air outlet 754 and the second air outlet 783 flows along the panel surface 70S of the decorative panel 70. The remaining panel surface 70S including the slope surface 712 of the wall 711 acts as an airflow guide surface.

As described above, the decorative panel 70 is attached to the main unit 10 by fitting the side wall portion 72 into the bottom opening of the main unit 10 and screwing. In this embodiment, the air suction part 73 is arranged on the side of the first air suction chamber S1, and when assembled, the bottom surface 40R of the drain pan 40 (see FIGS. 3 and 9) and the An air guide path L is formed between the decorative panel 70 and the back surface 70R to guide part of the air sucked from the air suction portion 73 to the second air suction chamber S2.

In this air guide path L, the air heading for the second air suction chamber S2 passes between the ducts 51, 51. In order to secure a larger amount of ventilation, as shown in FIG. The bottom surface 40R of the drain pan 40 corresponding to .

Further, in the indoor unit 1, as shown in FIGS. 4 and 6, the decorative panel 70 is provided with a raised portion 740 including a fixed blowout portion 75 and a movable blowout portion 77, and fixed to the side surface of the raised portion 740. By forming the first air outlet 754 of the outlet 75 and the second air outlet 783 of the movable outlet 77, an air guide passage L with a larger vertical width is secured between the drain pan 40 and the decorative panel 70. be able to.

4 and 6, the air suction portion 73 is arranged above the raised portion 740 and included in the panel surface 70S of the decorative panel 70 as viewed from the inside of the air conditioning room R. As a result, the air suction portion 73 is positioned closer to the air guide path L, and part of the air sucked from the air suction portion 73 is directed through the air guide path L to the second air suction chamber S2 side. easier to get to.

≪Placement of room temperature sensor≫
Also in the present invention, a room temperature sensor for measuring the room temperature in the air conditioning room R is provided for controlling the air conditioning operation. and the air guide path L, the problem is where to place the room temperature sensor in order to measure the room temperature more accurately.

Therefore, in this embodiment, as shown in FIGS. 4 and 6, the room temperature sensor TS is positioned above the air passage L in the first air suction chamber S1, that is, the upper limit of the air passage L is defined. It is arranged at a position above a plane 40Rp that includes the bottom surface 40R of the drain pan 40.

Preferably, of the side plates 112 and 113 provided in the main unit 10, the inner surface side of the side plate 112 on the long side facing the rear heat exchanger 20R is preferable. More preferably, it is located below the first air suction chamber S1 and near the plane 40Rp. At such a location, the amount of indoor air sucked from the air suction portion 73 is large, and the location is away from the heat exchanger, so that the room temperature can be measured with higher accuracy.

≪Assembly≫
Next, assembly of the indoor unit 1 will be described. For the main unit 10 , first, the top plate 111 side of the outer shell 11 is placed on an assembly table, and the heat insulating material 13 is fitted inside the outer shell 11 . Then, the gas connecting pipe and the liquid connecting pipe (both not shown) of the assembled heat exchanger 20 (the heat exchanger in which the front heat exchange section 20L and the rear heat exchange section 20R are connected by the connection plate 21) are pulled out from the side plate 113. In this state, the heat exchanger 20 is fixed to the top plate 111 via a predetermined fixture (not shown). After that, the assembled fan unit 30 is placed in the fan chamber F in the heat exchanger 20 and fixed to the top plate 111 via the motor mounting base 361 and the fan fixing portion 341 .

Next, the gutter portion 45 of the drain pan 40 on the side of the drain sheet 42 is fitted to the bottom surface of the outer shell 11 so as to match the lower ends of the heat exchange portions 20L and 20R. At this time, the blower portion 343 of the fan casing 34 is fitted into the ventilation hole 43 of the drain pan 40 .

The main unit 10 assembled as described above and the decorative panel 70 are individually packed and transported to the installation site. The main unit 10 is installed in the ceiling space T2 by suspending it with a plurality of hanging bolts embedded in the ceiling space T2.

Then, the decorative panel 70 is attached from the air conditioning room R side. At this time, the duct 51 of the partition plate unit 50 is connected to the blowing section 343 of the fan casing 34 through the ventilation hole 43 of the drain pan 40 . Although not shown, the indoor unit 1 can be operated by connecting the refrigerant pipe, the power line, and the signal line to the outdoor unit.

≪Driving≫
When the indoor unit 1 is stopped, as shown in FIG. The first air outlet 754 and the second air outlet 783 are both closed by up/down wind direction plates 782 and 753 .

Then, the compressor and fan motor (both not shown) of the outdoor unit and the fan motor 36 of the indoor unit 1 start operating according to a command from a remote controller (not shown) by the user or a command from the air conditioning system.

In the indoor unit 1, the blower fan 31 rotates as the fan motor 36 operates. As the blower fan 31 rotates, the air in the blower section 343 of the blower fan 31 is blown out, so that the inside of the blower chamber F becomes negative pressure, and the air suction section 73 provided in the decorative panel 70 causes the inside of the air-conditioned room R to flow. Air K is sucked in.

Referring to FIG. 6, air K sucked from air suction portion 73 flows into first air suction chamber S1, passes through air guide path L, and also flows into second air suction chamber S2. The air in the first air suction chamber S1 enters the blower chamber F after being heat-exchanged with the refrigerant through the rear heat exchange section 20R. Similarly, the air in the second air suction chamber S2 enters the fan chamber F after being heat-exchanged with the refrigerant through the front heat exchange section 20L.

The air conditioned in this manner is sent from the air blowing portion 343 of the fan casing 34 toward the fixed blowing portion 75 and the movable blowing portion 77 of the decorative panel 70 through the duct 51 by the rotation of the blower fan 31 .

The conditioned air sent to the fixed blowout part 75 is blown out from the first air blowout port 754 in the direction guided by the left/right airflow direction plate 752 and the up/down airflow direction plate 753 . Also, the conditioned air delivered to the movable blowing part 77 is blown out in the direction of rotation of the rotating unit 78 and in the direction guided by the vertical airflow direction plate 782 .

Since the rotation of the rotating units 78L and 78R can be individually controlled, the conditioned air can be supplied in multiple directions, excluding the direction of the long side 70b on the rear side where the air suction part 73 is located, according to the user's request. can be done.

≪Support structure of partition unit≫
The indoor unit 1 according to this embodiment includes the partition plate unit 50 shown in FIG. The partition unit 50 is attached to the air blowout portion 74 of the decorative panel 70, but is large and heavy because it is provided with the fixed blowout portion 75, the movable blowout portion 77, and the like.

The frame 721 described with reference to FIG. 10 is provided on the rear surface of the decorative panel 70 for the purpose of preventing damage due to impact such as when dropped, but here, as shown in FIG. A frame 760 for supporting the partition plate unit 50 is provided.

As shown in FIG. 17(a), a frame 760 includes long-side frames 761 and 762 arranged along the long sides 70a and 70b of the decorative panel 70, respectively, and both ends of the long-side frames 761 and 762 as main frames. Short-side frames 763 and 764 are arranged along the short sides 70c and 70d of the decorative panel 70, respectively, between them.

Two beams 765 and 766 span between the short-side frame 763 and the short-side frame 764 . Long side frames 761, 762, short side frames 763, 764 and beams 765, 766 are preferably made of sheet metal.

As shown in FIG. 17(b), the partition plate unit 50 is attached to the decorative panel 70 so that the fixed blow-out portion 75 and the movable blow-out portion 77 protrude toward the air conditioning room R to form an air blow-out portion 74. An opening 74 a is formed along the long side 70 a of the decorative panel 70 .

The beams 765 and 766 are arranged on the long sides of the opening 74a in which the air blowing portion 74 is provided, and the partition unit 50 is supported by the beams 765 and 766 on the rear surface 70R side of the decorative panel 70. As shown in FIG.

The partition plate unit 50 is surrounded by a front long-side frame 761 and left and right short-side frames 763 and 764 at three edges of the front edge 50a, the right edge 50b, and the left edge 50c. It is mounted on the rear surface 70R of the decorative panel 70 in a state of being fitted inside. As a result, the beams 765 and 766 are sandwiched between the partition plate unit 50 and the back surface 70R of the decorative panel 70. As shown in FIG.

According to this, the partition plate unit 50 can be mounted on the rear surface of the decorative panel 70 without deforming or distorting the decorative panel 70 .

≪Composition of the movable blowing part≫
As shown in FIG. 18, the fan unit 30 and the rotation unit 78 (78L, 78R) are connected via a partition unit 50 so that air can flow. The unit 50 is provided with driving means 600 for rotating the rotating unit 78 . The driving means 600 is provided in each of the rotating units 78L and 78R, but has the same configuration.

20 and 21, the driving means 600 includes an annular rotating ring 610 integrally connected to the upper portion of the rotating unit 78, and a motor unit 650 for rotating the rotating ring 610. As shown in FIG.

The rotary ring 610 has a cylindrical portion 611, and rack teeth 613 are formed on the outer circumference of the cylindrical portion 611 along the arcuate surface of the outer circumference. The rack teeth 613 may be formed over the entire circumference of the cylindrical portion 611, but may be formed in a range that at least achieves the rotation range of the rotation unit 78 (the range between the first position and the second position described above). .

A flange 614 is concentrically formed radially outward on the outer periphery of the cylindrical portion 611 . Hereinafter, this flange 614 is called an outer flange. Inside the cylindrical portion 611, a vent hole 612 communicating with the duct 51 (51c, 51d) for the movable blowing portion is formed in a square shape.

As shown in FIG. 22, the motor unit 650 has a motor (preferably a stepping motor) 651 capable of forward and reverse rotation, a pinion gear 652 attached to its output shaft 651a, and a mounting mount 653. A pinion gear 652 is attached to a predetermined portion of the duct cover 630 to be described later so as to mesh with the rack teeth 613 of the rotating ring 610 .

19 and 23, on both sides of partition plate unit 50, circular openings 520 into which rotating rings 610 are fitted are formed. A flange 521 is concentrically formed radially inward on the inner periphery of the opening 520 . Hereinafter, this flange 521 is called an inner flange.

When the rotating ring 610 is fitted into the opening 520 , the outer flange 614 is placed on the inner flange 521 , and the outer flange 614 slides on the inner flange 521 as the rotating ring 610 rotates. The outer flange 614 and inner flange 521 function as a kind of thrust bearing that receives the axial load of the rotor.

After the rotating ring 610 is fitted into the opening 520 , a duct cover 630 is put on to hold the rotating ring 610 . The duct cover 630 is screwed to the partition unit 50 .

As described above, the duct cover 630 is formed with the ducts 51 (51c, 51d) connected to the ventilation holes 43 formed in the drain pan 40. As shown in FIG. Further, the duct cover 630 is formed with a base portion 631 for mounting the motor unit 650 thereon.

As shown in FIG. 27, the rear surface 630R of the duct cover 630 is formed with an annular guide groove 635 into which the cylindrical portion 611 of the rotating ring 610 is fitted. Also, the circular portion surrounded by the guide groove 635 on the rear surface 630R of the duct cover 630 has a height slightly lower than the edge 630a of the duct cover 630 in FIG. ) has an inner bottom surface 633 .

The duct 51 (51c, 51d) has a rectangular shape, but its ventilation area (cross-sectional area) gradually expands from the upper surface of the duct cover 630 toward the inner bottom surface 633, and the inner bottom surface 633 has vertices (corners). The rotary ring 610 rotates along the circumscribed circle of the duct 51 on the inner bottom surface 633 side.

In the ventilation passage from the fan unit 30 to the second air outlet 783 of the rotating unit 78, the air pressure changes at the rotating portion of the rotating unit 78. By rotating along the circumscribing circle of 51, the blowing passage is not even partially blocked, so pressure change in the rotating portion of the rotating unit 78 can be reduced. Also, the structure of the connecting portion (connecting portion) between the rotating ring 610 and the duct 51 can be made smaller.

In addition, the rotating ring 610 does not have to be in contact with the four vertices of the duct 51 . It may be rotated without reducing the area (without even partially blocking the duct).

Referring to FIG. 19 again, according to this embodiment, the duct cover 630 is further covered with an exterior cover 640 . This exterior cover 640 is slightly larger than the duct cover 630, but may be omitted in some cases.

When changing the air blowing direction of the rotating unit 78 , the rotating ring 610 is rotated within the opening 520 by the motor 651 . It is necessary to prevent the rotating ring 610 from rattling during this rotation. This backlash includes backlash in the horizontal direction (radial direction) and backlash in the vertical direction (axial direction).

First, in order to prevent rattling in the lateral direction (radial direction), a stabilizer seat 523 shown in FIG. 24 is used. The stabilizing seat 523 has a flat seat portion 524 and a side wall portion 525 that rises substantially vertically from one end of the seat portion 524. The bottom portion of the seat portion 524 is provided with a slit for elastically deformable mounting legs. 526 is provided. The side wall portion 525 is formed with an arcuate surface 525 a along the outer peripheral edge 614 a of the outer flange 614 .

The stabilizing seats 523 are preferably made of low-friction resin such as polyacetal (POM). In this example, as shown in FIG. As another example, they may be provided at three locations at intervals of 120°. Moreover, when the length of the stabilizer seat 523 (the length along the circumferential direction of the inner flange 521) is long, it may be arranged at two locations.

The stabilizer seat 523 is attached to the inner flange 521 along the outer peripheral edge 614a of the outer flange 614 of the rotating ring 610. To attach the stabilizer seat 523, as shown in FIG. 522 is bored, and the mounting leg 526 is pushed into the engaging hole 522 while being elastically deformed.

Thus, by providing a plurality of stable seats 523 in contact with the outer peripheral edge 614a of the outer flange 614 on the inner flange 521 side, it is possible to prevent the rotary ring 610 from rattling in the lateral direction (radial direction).

Next, in order to prevent rattling in the vertical direction (axial direction), as shown in FIG. As described above, since the vent hole 612 formed in the cylindrical portion 611 is square, the cylindrical portion 611 has inner walls 617 forming sides of the square. A projecting piece 616 is erected on this inner wall 617 .

The projecting piece 616 is positioned so as to come into contact with the inner bottom surface 633 on the back surface 630R of the duct cover 630 shown in FIG. In this example, the inner bottom surface 633 is arranged along three sides of the square opening of the duct 51, while the projections 616 are arranged at four locations at 90° intervals as shown in FIG. is provided.

According to this, the three protrusions 616 are always on the inner surface 633 regardless of the rotational position of the rotating ring 610, so that the protrusions 616 do not come off the inner bottom surface 633, but the sliding friction resistance is reduced. In order to reduce the size, it is preferable that the contact area of each projecting piece 616 with respect to the inner bottom surface 633 is as small as possible.

28, the projection height of the projecting piece 616 is such that the tip of the projecting piece 616 comes into contact with the inner bottom surface 633 when the duct cover 630 is put on the rotary ring 610. As shown in FIG.

In this way, by providing the protruding piece 616 inside the cylindrical body 611 of the rotating ring 610 to contact the inner bottom surface 633 on the back surface 630R of the duct cover 630, the vertical (axial) rattling of the rotating ring 610 is prevented. can be prevented.

As described above, the rotating ring 610 is rotated within the opening 520 of the partition plate unit 50 by the motor 651, but air leaks from the gap between the inner flange 521 on the opening 520 side and the outer flange 614 on the rotating ring 610 side. It is necessary to take preventive measures, especially measures to prevent condensation during cooling operation.

Therefore, in this example, as shown in FIGS. 29 and 30, a sealing member 618 is provided on the inner surface of the outer flange 614 (the surface facing the inner flange 521). The sealing material 618 only needs to have appropriate elasticity and heat insulation, but since it rubs against the inner flange 521 as the rotating ring 610 rotates, low-friction fibers such as polyacetal fibers (in many cases, short A tape or sheet obtained by flocking fibers to a tape-like or sheet-like base material is preferably employed.

According to this, the clearance between the inner flange 521 and the outer flange 614 can be substantially set to about 0 to 0.5 mm to prevent wind leakage. In addition, the structure can be such that dew condensation does not occur. Also, the sliding frictional resistance caused by the rotation of the rotating ring 610 can be reduced.

Note that, as shown in FIG. 29, bosses 619 used when connecting the rotating unit 78 are provided at a plurality of locations on the rear surface 610R side of the rotating ring 610 .

<Fan unit configuration>
In the fan unit 30 described above with reference to FIG. is also fixed to the top plate 111 of the outer barrel 11 via the motor mounting base 361 . Therefore, the number of parts used is large, and high accuracy is required for the positioning of the blower fan 31 and the fan motor 36 .

31 and 32 show a fan unit 30A improved in this respect. Also in this embodiment, a sirocco fan is preferably used as the blower fan 31, and the fan motor 36 is also used as it is without any particular modification.

In this fan unit 30A, the fan casing 34 of the blower fan 31 is divided into a casing lower part 371 and a casing upper part 372 both made of synthetic resin material. A base 373 is integrally formed.

The bearing portion for supporting the blower fan 31 in the lower casing portion 371 and the bearing portion for supporting the fan motor 36 in the motor mounting base 373 (both not shown) are preliminarily aligned when the motor mounting base 373 is integrally formed with the lower casing portion 371. being put out. Note that the casing upper portion 372 may be locked to the casing lower portion 371 with a locking member 374 such as a snap lock.

According to this fan unit 30A, the blower fan 31 and the fan motor 36 are connected in advance, the casing upper portion 372 is opened, the blower fan 31 is accommodated in the casing lower portion 371, and the fan motor 36 is set on the motor mounting base 373. Positioning (centering) of the blower fan 31 and the fan motor 36 can be easily performed.

In addition, it is not necessary to fix the outer shell 11 to the top plate 111 separately for the blower fan 31 and the fan motor 36, and only the outer shell mounting portion (not shown) provided in the casing lower part 371 is attached to the top plate 111. Just fix it to

Further, since the fan unit 30A is unitized in the minimum unit, the number of units to be used may be selected according to the blowing air volume required for the air conditioner, the size of the air blowing part, etc. There is no need to design a dedicated fan unit (blower) for each different model. According to this fan unit 30A, the air volume can be adjusted individually, so more detailed air conditioning operation is possible.

≪Construction of electrical equipment box (1)≫
2 and 3, an electrical component (not shown) for controlling the indoor unit 1 is mounted on the outer surface of the right side of the outer shell 11, which in this embodiment is the outer surface 113a of one side plate 113 on the short side. ) is attached, the electrical component box 14 does not interfere with ventilation.

Referring also to FIG. 33, the electrical component box 14 is composed of a box body 141 having a bottom surface facing the side panel 71b and having an opening 14a at the bottom surface. In order to reduce the number of parts, it is preferable that a portion of the box 141 (the surface of the outer case 11 facing the side plate 113) is formed by the side plate 113 described above.

In this embodiment, a remote controller wiring terminal 142 is arranged facing an opening 14a of the electrical component box 14, and lead wires 143 such as a motor lead wire 143a and a switch board lead wire 143b are led out from the opening 14a. is

A cable housing portion 15 is provided on the inner surface 113b side of the side plate 113 to which the electrical component box 14 is attached. The cable housing portion 15 also serves as a cable guide that houses the pull-out portion of the lead wire 143 pulled out from the electrical component box 14 and guides it in a predetermined direction.

The cable housing portion 15 is fitted into the drain pan 40 so as to be flush with the bottom surface 40R of the drain pan 40 . Therefore, as shown in FIG. 34( a ), a recess 47 for fitting the cable housing portion 15 is formed at the corner of the bottom surface 40</b>R of the drain pan 40 .

Further, as shown in FIG. 34(b), a guide groove 151 is formed in the cable housing portion 15 to guide the lead-out portion of the lead wire 143 in a predetermined direction. A claw piece 152 is provided for zigzagging the lines 143 and 144 and inserting them into the guide groove.

Wiring guide grooves 153 for wiring the lead wires 143 along the bottom surface 40</b>R of the drain pan 40 are formed on both sides of the cable housing portion 15 . A locking groove 154 having a clip function is formed in the edge of the side plate 113 of the cable storage portion 15 in contact with the lead wire 143 from the electrical component box 14 to drop the lead portion 143e thereof.

In this way, by arranging the cable storage portion 15 on the inner surface 113b side of the side plate 113 to which the electrical component box 14 is attached, a wiring board (not shown) to which the lead wire 143 is attached can be placed in the opening 14a of the electrical component box 14. By inserting it, the lead-out portion of the lead wire 143 can be housed in the same plane as the bottom surface 40R of the drain pan 40 . Also, the electrical component box 14 can be easily accessed during maintenance.

≪Construction of electrical equipment box (2)≫
Next, referring to FIGS. 35 and 36, the electrical component box 14 has a lid 16 that closes the opening 14a. The lid body 16 is composed of two members: a first lid portion 161 that closes one end of the opening 14a, and a second lid portion 165 that covers the rest of the opening 14a.

In this embodiment, the first lid portion 161 is a semi-fixed lid that is hardly removed during maintenance, and is formed with a rectangular connecting terminal portion exposing hole 162 . . FIG. 35 shows a remote control wiring terminal 142a and a switch board 142b having a DIP switch for registering, for example, the identification number of the multi-air conditioner, as connection terminals provided in the connection terminal exposure hole 162. ing.

On the other hand, the second lid portion 165 is a lid that can be removed (opened) during maintenance, and is formed of a box with an open bottom that can cover the remote controller wiring terminal 142 .

A flange 166 that covers the portion of the remote control wiring terminal 142a in the connection terminal exposure hole 162 is connected to one end of the second cover 165, and the connection terminal exposure hole 162 is located at the tip of the flange 166. A tongue 167 is formed to engage the rim. A screw hole 168 for the electrical component box 14 is formed on the other end side of the second lid portion 165 .

According to this, the tongue piece 167 is engaged with the edge of the connection terminal exposing hole 162, and the screw 169 is inserted into the screwing hole 168 on the other end side and screwed, whereby the second lid portion 165 is attached to the electrical equipment. It can be attached to the product box 14 . To remove the second lid portion 165 , the screw 169 is removed and the tongue piece 167 is pulled out from the edge of the connection terminal portion exposing hole 162 .

As shown in FIG. 36, the side panel 71b (the right side panel 71bR in the illustrated example) of the decorative panel 70 is provided with an opening window 17 for maintenance to access the electrical component box 14. If the dimension 17 is too large, not only the mechanical strength of the side panel 71b is lowered, but also the room air near the ceiling may flow into the back side of the ceiling through the opening window 17 and condensation may occur on the outer shell 11 .

Therefore, in the present invention, the opening window 17 is sized so that the second lid portion 165 can be taken out and is smaller than the entire lid body 16 . As shown in FIGS. 11 to 13, a side panel cover is normally attached to the side panel 71b, and the opening window 17 is not visible.

According to this, at the time of maintenance, as shown in FIG. 36(b), by simply removing the side panel cover and the second lid portion 165, the inside of the electrical component box 14 can be accessed. The wiring connection state of 142 and lead wire 143 can be easily checked.

≪Hanging decorative panels≫
Since the ceiling-mounted air conditioner is large in size, the decorative panel 70 also has a certain amount of weight. It is necessary to consider the ease of maintenance work for inspecting the unit 30 and the like.

Therefore, in order to facilitate these operations, in the present invention, as shown in FIG. A hook 18b is provided.

Referring to FIG. 38, a suspension member 18a is formed by bending a wire rod such as a steel wire into a substantially U-shape, and has rotating shafts 181, 181 at both ends thereof which are coaxially bent at right angles in directions separating from each other. doing. The hook 18b preferably has a locking pawl 183 folded back in a substantially V-shape (or U-shape) at the upper end of a base plate 182 made of metal.

Although the suspension tool 18a may be provided on the side plate 112 on the long side of the outer shell 11, in this embodiment, the suspension tool 18a is attached to the short side of the outer shell 11 via its rotation shafts 181,181. It is rotatably supported by the side plate 113 on the side. The side plate 113 to which the suspender 18a is attached is provided with a receiver 18c for supporting the rotating shafts 181,181.

Of the two side plates 113, 113 on the short side, the hanger 18a is attached to the side plate 113 opposite to the side plate 113 to which the electrical component box 14 is attached. That is, the electrical component box 14 is attached to one side plate 113, and the hanging tool 18a is attached to the other side plate 113. As shown in FIG.

The hook 18b is attached to the decorative panel 70 side, and is screwed to the short-side frame 763 corresponding to the side plate 113 of the frame 760 that reinforces the decorative panel 70 in this embodiment.

According to this, when the decorative panel 70 has to be removed for maintenance of the electric component box 14 or the like, for example, by hooking the locking claw 183 of the hook 18b to the hanging member 18a, the decorative panel 70 can be removed. The panel 70 can be hung from the outer body 11 of the main unit 10. - 特許庁

Further, according to this embodiment, the side panel 71b (the left side panel 71bL) has an opening 19 for viewing the hook 18b from the air conditioning room R side in order to facilitate hooking the hook 18b on the hanging member 18a. is provided.

Although not shown, the drain pan 40 may also be attached with a hook 18b so that the drain pan 40 can be suspended from the main unit 10 in the same manner as the decorative panel 70. FIG.

≪Motor lead wire trap structure≫
Next, referring to FIG. 39, the motor lead wire 143a drawn out from the electrical component box 14 is drawn into the blower chamber F in the outer shell 11 through the lead wire insertion hole 411 drilled in the drain pan 40. and connected to the fan motor 36 .

During the cooling operation, cold air flows in the fan chamber F, so condensation occurs on the motor lead wire 143a, and the condensed water may enter the lead wire connection portion 362 of the fan motor 36 shown in FIG. In order to prevent this, the present invention takes the following measures.

As shown in FIG. 40, the fan motor 36 is attached to the top plate 111 of the outer shell 11 via the motor mounting base 361 (see FIG. 3), with the lead wire connecting portion 362 facing downward. .

Although FIG. 40 shows the lead wire connection portion 362 facing upward for the convenience of drawing, the fan motor 36 is actually arranged so that the lead wire connection portion 362 faces downward on the side opposite to the top plate 111 . is attached to the top plate 111 of the outer barrel 11 via the motor mounting base 361 (see FIG. 3, for example).

In this embodiment, the motor mounting base 361 has a side surface portion 364 substantially perpendicular to the top plate 111 of the outer barrel 11 as a predetermined portion on which a cable clip 363 (to be described later) is provided. The side surface portion 364 is provided with a cable clip 363 that engages a portion of the motor lead wire 143a at a position closer to the top plate 111 side than the lead wire connecting portion 362 is.

As a result, a substantially U-shaped water trap portion 365 is formed by a portion of the motor lead wire 143a between the lead wire connection portion 362 and the cable clip 363. Therefore, it is assumed that dew condensation occurs on the motor lead wire 143a. However, the condensed water does not drip from the water trap portion 365 and enter the lead wire connection portion 362 .

Since the bottom surface of the outer shell 11 is closed by the drain pan 40 , the condensed water dripping from the water trap portion is received by the drain pan 40 and does not leak out of the outer shell 11 . Further, the lead wire insertion hole 411 of the drain pan 40 is closed by a lid 412 with a sealing material after the lead wire 143a is inserted.

≪Leading the motor lead wire to the rotating unit≫
As described above, the movable blowing section 74 includes two left and right rotating units 78 (78L, 78R). As shown in FIGS. 18 and 20, these rotating units 78 are provided with up-down wind direction plates 782, so that the rotation units 78 are equipped with motors 784 for driving the up-down direction plates 782. there is

That is, the rotating unit 78 includes two motors, a motor (first motor) 651 that rotates the rotating unit 78 itself and a motor (second motor) 784 that drives the up/down wind direction plate 782 .

Motor lead wires are connected to the first motor 651 and the second motor 784 respectively, and the first motor 651 is arranged at a fixed position, whereas the second motor 784 is arranged such that the rotation unit 78 is rotated at a predetermined angle. Moves as it rotates back and forth within range.

As a result, the motor lead wires connected to the second motor 784 are also moved and repeatedly bent (bent), so there is a risk that the motor lead wires will break or become entangled. In order to prevent this, the present invention takes the following measures. The embodiment will be described with reference to FIGS. 41 to 43.

41 is a plan view showing the partition plate unit 50 provided on the rear surface 70R side of the decorative panel 70, and FIG. FIG. 43 is a plan view showing the state in the first rotation position directed to the long side 70a side of the decorative panel 70, and FIG. FIG. 11 is a plan view showing a state in a second rotational position;

Since the left and right rotating units 78L and 78R have the same configuration, the right rotating unit 78R will be described here.

First, referring to FIG. 41, along a predetermined inner edge on the back surface 70R side of the decorative panel 70, in this embodiment, along the front edge of the partition plate unit 50 (the inner edge on the front long side 70a side of the decorative panel 70). Motor leads 800 are routed. A motor lead wire 800 is pulled out from the electrical component box 14 .

The motor lead wires 800 include the lead wires of the first motor 651 and the lead wires of the second motor 784, but the lead wires of the first motor 651 are omitted from the drawing. It should be noted that, in this embodiment, the second motor 784 is also a stepping motor like the first motor 651 .

Motor lead wire 800 includes a first wiring portion 810 and a second wiring portion 820 . The first wiring portion 810 is a wiring portion that is wired along the front edge of the partition plate unit 50 and fixed by, for example, a hook-shaped locking member 801 .

The motor lead wire 800 includes a plurality of flexible lead wires. In the first wiring portion 810, the lead wires are covered with an insulating tube (not shown). The insulating tube is removed to expose a flexible lead wire, and the second wiring portion 820 is a bendable wiring portion. In the drawing, the first wiring portion 810 is drawn with a thick line, and the second wiring portion 820 is drawn with a thin line.

42 and 43, the rotation unit 78R includes a connector portion 785 for connecting motor lead wires to the second motor 784. As shown in FIG. A bendable second wiring portion 820 is drawn from the wiring lead-in portion 804 around the rotating ring 610 (see FIG. 20) of the rotating unit 78R and connected to the connector portion 785 .

A cylindrical boss 805 for bending the bendable second wiring portion 820 in one direction is erected on the wiring lead-in portion 804 . In this embodiment, the boss 805 is arranged in an oblique direction of 45° to the upper right when viewed from the center of the rotation unit 78R, and the bendable second wiring portion 820 extends around the rotation unit 78R via the boss 805. be drawn in.

As for the rotating unit 78L on the left side, as shown in FIG. 41, the boss 805 is arranged diagonally at 45° to the upper left when viewed from the center of the rotating unit 78L, and the bendable second wiring portion 820 is located on the right side. It is drawn around the rotating unit 78L so as to pass through the boss 805 in the same manner as the rotating unit 78R.

The bendable second wiring portion 820 has a length along the peripheral surface of the rotation unit 78R when the rotation unit 78R is in the second rotation position shown in FIG. That is, the bendable second wiring portion 820 has at least a length from the boss 805 to the connector portion 785 at the second rotation position along the peripheral surface of the rotation unit 78R.

It should be noted that the rotation range of the rotation unit 78R during normal use is 90 degrees facing forward and sideways, but the second rotation position in FIG. 43 exceeds 90 degrees. is designed to allow

Since the bendable second wiring portion 820 has the length as described above, it bends U as the rotation unit 78R rotates from the second rotation position in FIG. 43 toward the first rotation position in FIG. It is bent so that a letter-shaped folded portion 821 is formed.

Around the rotation unit 78R of the partition plate unit 50 and on the front edge side thereof, a wire storage portion 830 for the turn-back portion 821 of the bendable second wire portion 820 is provided. The wire storage portion 830 is provided with a guide wall 831 for moving the turn-back portion 821 of the bendable second wire portion 820 along the rotation direction of the rotation unit 78R.

When the rotation unit 78R rotates counterclockwise from the second rotation position to the first rotation position, the folded portion 821 moves counterclockwise while contacting the guide wall 831, and the rotation unit 78R rotates to the first rotation position. When rotating clockwise from the first rotation position to the second rotation position, the folded portion 821 also moves clockwise while contacting the guide wall 831 .

According to this, since the folded portion (bending portion) 821 of the bendable second wiring portion 820 moves with the rotation of the rotating unit 78R, there is no possibility that the second wiring portion 820 is disconnected. In addition, the bendable second wiring portion 820 does not come into contact with and become entangled with the first wiring portion 810 on the fixed side.

Further, according to this embodiment, as shown in FIG. 44, a wiring cover 832 is provided that covers at least the wiring storage portion 830, and preferably covers the portion from the wiring storage portion 830 to the rotation unit 78R, for example, 1/4 of the circumference. . As a result, it is possible to prevent the bendable second wiring portion 820 from protruding or coming off.

≪Assembly of decorative panel≫
As described with reference to FIGS. 11 to 13, the air blowing portion 74 is formed as a protruding portion 740 formed by protruding a part of the panel portion 71 along the long side 70a toward the air conditioning room R side to have a trapezoidal cross section. It is

The raised portion 740 is an elliptical rectangle with rounded corners consisting of two parallel lines of equal length and two semicircles, and has an inclined side surface (peripheral surface). It has movable blowout portions 77 (77L, 77R) on both left and right sides.

Referring to FIG. 45, in assembling the decorative panel 70, truncated conical rotating units 78 (78L, 78R) constituting the movable blowout portions 77 (77L, 77R) are arranged on both sides of the raised portion 740. A central blow-out unit 751 shown in FIG. 15 is arranged as a fixed blow-out portion 75 between .

Between the left rotating unit 78L and the central blowing unit 751, and between the right rotating unit 78R and the central blowing unit 751, a first air outlet 754 and a second air outlet 783 are continuously provided. A dummy flap 791 is arranged to make the appearance as if the These rotating unit 78, central blowing unit 751 and dummy flap 791 may be fixed to the partition plate unit 50 provided on the rear surface 70R side of the decorative panel 70 with nails, screws or the like.

Although not shown, a motor for driving the up/down wind direction plate 753 is attached to the side surface of the central blowout unit 751 . Also, the dummy flap 791 has mounting legs 793 for the partition plate unit 50 on its back side.

45 of the central blow-out unit 751 (lower edge when viewed from the air conditioning room R side) has a plurality of locking holes (not shown) for locking a cover panel 900 of the fixed blow-out portion 75, which will be described later. formed. Further, each of the dummy flaps 791 has an engaging hole 792 for engaging the cover panel 900 on its flat upper surface.

Referring to FIGS. 46 and 47, fixed blowout portion 75 includes a cover panel 900 arranged between rotating units 78L and 78R. The cover panel 900 integrally includes a main panel portion 910 and a rear panel portion 920 .

46 is a front perspective view of the decorative panel 70, and FIG. 47 is a rear perspective view of the decorative panel 70. In FIG. is omitted.

The main surface panel portion 910 covers the lower side of the fixed blowout portion 75 (lower side when viewed from the air conditioning room R, upper side in FIG. 46) with a flat surface having the same height as the top surfaces 781 of the rotary units 78L and 78R. The rear panel section 920 is formed between the main panel section 910 and the air suction section 73 so as to be integrated with the main panel section 910 and cover the back side of the fixed blowout section 75 .

Both ends of the main surface panel portion 910 are formed with arc portions 911 that match portions of the edges of the top surfaces 781 of the rotation units 78L and 78R. At both ends of the rear panel portion 920, bottom portions 921 are formed along the conical surfaces of the rotating units 78L and 78R.

The arc portion 911 of the main panel portion 910 and the skirt portion 921 of the rear panel portion 920 are formed continuously, and the arc portion 910 and the skirt portion 921 partially cover the rotary units 78L and 78R. .

As shown in FIG. 46(a), on the front edge 901 of the main panel portion 910, a locking claw (first locking claw) 912 for the locking hole of the central blowout unit 751 and a dummy flap 791 are engaged. A locking claw (second locking claw) 913 for the stop hole 792 is formed. The shape (structure) of these locking claws 912 and 913 is omitted for convenience of drawing, and only the locations of their arrangement are indicated by black squares.

Further, as shown in FIG. 46(a), on the rear edge 902 of the rear panel portion 920, there are screwed pieces 922 screwed inside the air suction portion 73 at a plurality of locations (four locations in this example). is provided.

According to this, the first locking claw 912 of the main panel portion 910 is locked to the locking hole 755 of the central blowout unit 751, and the second locking claw 913 of the main panel portion 910 is locked to the dummy flap 791. After locking the locking hole 792 , the screwing piece 922 of the rear panel portion 920 is screwed to a predetermined position within the air suction portion 73 . A screwing portion (mounting portion) for the partition plate unit 50 can be hidden by the cover panel 900 .

Moreover, since the screwing piece 922 of the rear panel portion 920 is hidden by the suction grille 731 attached to the air suction portion 73, the design is not spoiled.

≪Prevention of dripping water from the air outlet≫
During cooling operation, cold air is blown out from the air outlet (first air outlet) 754 of the fixed outlet 75 and from the air outlet (second air outlet) 783 of the rotating unit 78 as the movable outlet 77. , water droplets due to dew condensation adhere around these air outlets 754 and 783, and when they grow, they become water drips.

In the present invention, the design of the decorative panel 70 is not spoiled, but the design is improved to prevent dripping due to dew condensation.

As a basic configuration, the panel surface 70S around the air outlets 754 and 783 is textured (also referred to as embossing). (dot texture).

Referring to FIGS. 48(a) and 48(b), dot grain 700 includes many convex portions 771, but the interval between adjacent convex portions 771, 771 is wider than that of normal satin grain containing fine concaves and convexes. do. This makes it easier for the dew condensation generated on the panel surface 70S to flow along the panel surface 70S, so that the dew condensation grows and drips less easily.

In addition, although the texture includes a large number of unevenness, concaves and convexes are relative terms, and in the description here, portions between the convex portions 771 , that is, portions other than the convex portions 771 are referred to as concave portions 772 .

In a preferred embodiment, the projections 771 are cylindrical and have a diameter of 1.0 mm, the distance between the adjacent projections 771, 771 is 1.0 to 3.0 mm (especially 2.0 mm), and the height of the projections 771 is 50 μm. Good to have.

In order to enhance the design and improve the quality of the appearance, it is preferable that only the top surfaces of the projections 771 are matted to form a rough surface, and the other recesses 772 are glossy-finished (mirror-finished). According to this, a sense of luxury is created.

Further, as shown in FIG. 49, the dot texture 700 is applied not only to the edges 754a and 783a around the air outlets 754 and 783, but also to the entire surface of the protuberant portion 740 of the air outlet 74 (shaded portion in FIG. 49). , are preferably formed on the surface of the truncated cone of the rotating unit 78 and the surface of the cover panel 900 . By doing so, there is also the advantage that defects due to molding (sink marks, etc.) become less conspicuous.

1: Indoor unit 10: Main unit 11: Outer body 111: Top plate 112, 113: Side plate 12: Mounting bracket 13: Heat insulating material 14: Electrical component box 15: Cable housing 16: Lid 17: Opening window 18a: Suspension Bottom fitting 18b: Hook 19: Opening 20: Heat exchanger 20L: Front heat exchange part 20R: Rear heat exchange part 21: Connecting plate 30: Fan unit 31: Blower fan 32: Impeller 33: Blower path 34: Fan casing 343: Blower part 35: Rotating shaft 36: Fan motor 361: Motor mounting base 362: Lead wire connection part 363: Clip 371: Casing lower part 372: Casing upper part 373: Motor mounting base 40: Drain pan 411: Lead wire insertion hole 43: Ventilation hole 45: gutter 50: partition unit 51 (51a to 51d): duct 520: opening 521: inner flange 523: stable seat 600: driving means 610: rotating ring 611: cylindrical portion 612: ventilation hole 613: rack Teeth 614: Outer flange 616: Protruding piece 618: Seal material 630: Duct cover 633: Inner bottom surface 635: Guide groove 70: Decorative panel 70a, 70b: Long side 70c, 70d: Short side 71: Panel part 71a: Panel body 71b : Side panel 711: Wall 712: Slope surface 72: Side wall part 721, 760: Frame 722, 765, 766: Beam 73: Air suction part 74: Air blowing part 740: Raised part 75: Fixed blowing part 751: Central blowing unit 754: First air outlet 77 (77L, 77R): Movable outlet 78 (78L, 78R): Rotating unit 782: Up-down wind direction plate 784: Motor for driving up-down direction plate 785: Connector part 783: Second air outlet 770: Dot texture 771: Convex portion 772: Concave portion 800: Motor lead wire of motor for driving up/down wind direction plate 804: Wiring lead-in portion 805: Boss 810: Fixed first wiring portion 820: Flexible second wiring portion 830: Wiring Storage part 831: Guide wall 832: Wiring cover 900: Cover panel 910: Main panel part 920: Rear panel part R: Air conditioning room T1: Ceiling T2: Ceiling space F: Blower room S1, S2: Air suction chamber L: Lead Air path TS: Room temperature sensor

Claims (4)

A box-shaped main unit arranged in the ceiling of an air-conditioned room, and a decorative panel attached to the bottom surface of the main unit along the ceiling surface of the air-conditioned room, wherein the decorative panel has an air suction part and an air outlet. are arranged adjacent to each other,
The air blowing part has an oval raised part in plan view which is formed by raising a part of the decorative panel toward the air conditioning room,
The raised portion includes a fixed blowout portion and movable blowout portions arranged on both left and right sides thereof,
The movable blowing part has a truncated cone-shaped rotating unit that can rotate about an axis orthogonal to a virtual plane on the back side of the decorative panel that is parallel to the bottom surface of the main unit,
a semicircular portion is formed at each end of the ridge by a portion of the rotating unit;
A ceiling-embedded air conditioner in which a first air outlet is provided on the side surface of the fixed outlet and a second air outlet is provided on a part of the side surface of each rotating unit,
A partition plate unit arranged on the back side of the decorative panel and to which the fixed blowout part and the movable blowout part are attached; a main surface panel portion covering the lower side of the fixed blowout portion with a flat surface having the same height as the surface; a rear panel portion formed between the suction portion,
Both ends of the main surface panel portion are formed with arcuate portions that match a portion of the edge of the top surface of the rotating unit, and both ends of the rear panel portion are formed with skirts along the conical surface of the rotating unit. a portion is formed, and the outer shape of the raised portion is formed by the cover panel, and the mounting portion of the fixed blowout portion and the movable blowout portion to the partition plate unit is hidden. type air conditioner.
A dummy flap is arranged between the fixed blowing part and the rotating unit to make the air blowing outlets appear to be continuous, and the rear part of the dummy flap is also covered with the main surface panel. The ceiling-embedded air conditioner according to claim 1, characterized in that: At the front edge of the main surface panel portion, an engaging claw to be engaged with the edge of the first air outlet and an engaging claw for the dummy flap are formed. 3. The ceiling-embedded air conditioner according to claim 2, wherein the edge is provided with a screwing piece that is screwed into the inside of the air suction portion. 2. The ceiling-mounted type according to claim 1, wherein the arc portion and the skirt portion are formed continuously, and the rotary unit is partially covered by the arc portion and the skirt portion. Air conditioner.

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