JP7161667B2 - air conditioner - Google Patents

Description

TECHNICAL FIELD The present invention relates to an air conditioner, and more particularly to the structure of an intake grill attached to an air intake port of a decorative panel.

An air conditioner (indoor unit) is provided with a decorative panel for improving the appearance on the indoor surface side of a main unit in which a heat exchanger, a blower (indoor fan), etc. are housed. The decorative panel is provided with an air suction port communicating with the air suction side passage of the fan and an air outlet communicating with the air blowing side passage of the fan.

Among them, an air suction grill is attached to the air suction port, and an air filter is arranged inside it. The intake grille is detachable, and is removed from the air intake port when cleaning the air filter or performing maintenance inside the main unit.

By the way, in ceiling-embedded air conditioners (indoor units) called ceiling cassette air conditioners, in many cases, the decorative panel is attached to the air inlet and the air outlet so that the screws for ceiling installation can be hidden. It is divided into a panel body with an outlet and a side panel.

The suction grill is provided with a plurality of grill crosspieces parallel to each other along the long sides of the panel body (see Patent Documents 1 and 2). In response to this, dummy bars are formed on the extension of the grille bars on the side panel side, but the gap between the butted part of the panel body and the side panel is seen as a straight dividing line, which is not good for the appearance. quality will decline.

JP-A-6-147534 Japanese Patent Application Laid-Open No. 2009-103420

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to make it difficult to see the gap between the panel body of the decorative panel, particularly the abutting portion between the intake grille and the side panel, in a ceiling-embedded air conditioner.

In order to solve the above-mentioned problems, the present invention includes a box-shaped main unit installed in the ceiling space, and a decorative panel attached to the bottom surface of the main unit along the ceiling surface, wherein the decorative panel is air A first panel having an air intake grille and a second panel adjacent to the air intake grille are divided into at least two panels. In a ceiling-embedded air conditioner, the second panel is provided with a plurality of dummy bars positioned on extension lines of the grill bars,
The ends of the grill bars extend toward the second panel across the dividing line between the first panel and the second panel, and cross the dividing line of the first panel toward the second panel. The end of the dummy crosspiece is set back from the parting line by the amount of extension, and the abutting part of the end of the grille crosspiece and the end of the dummy crosspiece is arranged at a position shifted from the parting line. and the surface of the second panel is exposed in the gap of the butted portion .

As another aspect, the present invention includes a box-shaped main unit installed in the ceiling space, and a decorative panel attached to the bottom surface of the main unit along the ceiling surface, and the decorative panel sucks air. A first panel having a grille and a second panel adjacent to the air intake grille are divided into at least two panels, and the air intake grille has a plurality of grill bars extending parallel to each other at predetermined intervals along at least one direction. and the second panel is provided with a plurality of dummy bars positioned on extension lines of the grill bars,
The ends of the grill bars extend toward the second panel across the dividing line between the first panel and the second panel, and cross the dividing line of the first panel toward the second panel. The end of the dummy crosspiece is set back from the parting line by the amount of extension, and the abutting part of the end of the grille crosspiece and the end of the dummy crosspiece is arranged at a position shifted from the parting line. wherein the butted portions are non-parallel to the dividing line and have a predetermined inclination angle with respect to the dividing line, and each of the butting portions is arranged along a straight line parallel to the dividing line. is characterized by

As yet another aspect, the present invention includes a box-shaped main unit installed in the ceiling space, and a decorative panel attached to the bottom surface of the main unit along the ceiling surface, the decorative panel sucking in air. A first panel having a grille and a second panel adjacent to the air intake grille are divided into at least two panels, and the air intake grille has a plurality of grill bars extending parallel to each other at predetermined intervals along at least one direction. and the second panel is provided with a plurality of dummy bars positioned on extension lines of the grill bars,
The ends of the grill bars extend toward the second panel across the dividing line between the first panel and the second panel, and cross the dividing line of the first panel toward the second panel. The end of the dummy crosspiece is set back from the parting line by the amount of extension, and the abutting part of the end of the grille crosspiece and the end of the dummy crosspiece is arranged at a position shifted from the parting line. In the abutment portion, a blindfold rib is formed from the end portion of the dummy crosspiece to the parting line .

According to the present invention, when the decorative panel installed on the ceiling surface is obliquely viewed from the user's position, a part of the gap between the abutting portion of the intake grille and the side panel is hidden by the grill crosspiece. Since the background of the side panel can be seen and the black shadow of the gap becomes lighter, the presence of the gap becomes difficult to recognize, and the grill bar and the dummy bar appear to be connected to one, improving the appearance quality.

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 the said partition plate unit. The perspective view which shows the rotation unit attached to the said partition plate unit. The bottom view similar to FIG. 11 which looked at the decorative panel from the air conditioning room side. FIG. 4 is an enlarged plan view of a main part showing a first configuration example of a grill bar provided in the air suction portion; FIG. 2 is an enlarged plan view of a main portion showing a preferred mode of the first configuration example; FIG. 6 is an enlarged cross-sectional view of a main part showing a second configuration example of the grill bar provided in the air suction portion; (a) Bottom view from the air conditioning room side showing the part where the switch for opening and closing the intake grille is attached, (b) Along the EE line in (a) when the switch is in the locked position Sectional view, (c) Sectional view along line EE of (a) when the switch is in the unlocked position. (a) Perspective view of the switch as seen from below (a), (b) side view. An example in which the mounting position of the switch is changed, similar to FIG. (a) is a cross-sectional view taken along the FF line when the switch is in the unlocked position; (c) is a cross-sectional view along the FF line (a) when the switch is in the unlocked position; 3A and 3B are cross-sectional views of another embodiment of the switch, showing (a) the switch in the locked position and (b) the switch in the unlocked position;

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

The indoor unit 1 shown in FIGS. 1 and 2 includes a box-shaped main unit 10 embedded in the ceiling space T2, and a decorative panel 70 arranged on the air conditioning room R side of the ceiling T1 and attached to the bottom surface of the main unit 10. In particular, it is an omnidirectional ceiling-mounted air conditioner that blows air in all directions.

Referring to FIG. 3, main unit 10 has a box-shaped outer body 11 formed of a rectangular top plate 111 made of sheet metal and 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 is attached to a rectangular panel portion 71 larger than the top plate 111, and to the bottom surface of the box-shaped outer body 11 which is erected from the rear surface of the panel portion 71 toward the main unit 10 and has an opening, matching the size thereof. It has a side wall portion 72 that is

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.

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. It has a frame 721 having a size surrounding the portion 74 and a beam 722 that spans between the short sides of the frame 721 (sides on the short sides 70c and 70d of the panel portion 71). 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 the exposed top plate 111 .

As shown in FIG. 2 , 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 of 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 the front heat exchange section on the left side in FIG. 20L and a rear heat exchange section 20R on the right side in FIG.

The front heat exchange section 20L and the rear heat exchange section 20R are arranged so as to face each other, but in order to keep the height dimension low and to increase the amount of ventilation, it is preferable that the upper end side is spaced as shown in FIG. They are combined in an inverted V shape wider than the interval on the lower end side. Instead of the inverted V shape, a V shape in which the interval on the upper end side is narrower than the interval 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 the connection plate 21, and the space inside the heat exchanger 20 becomes the fan chamber F. 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 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 has a cylindrical impeller 32 having a plurality of blades, a spiral fan casing 34 housing the impeller 32 , and a rotary shaft 35 connected to the center of the impeller 32 .

The number of blower fans 31 is arbitrarily selected according to the air conditioning capacity, but in this embodiment, four fans are arranged side by side on the same axis. 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 blown air is blown in one direction along the air passage 33 in the fan casing 34 and is blown out from the air blowing portion 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 foamed polystyrene and a resin drain sheet 42 provided on the 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 . It is preferable to waterproof the area around the ventilation hole 43 because the condensed water generated on the outer surface side of the fan casing 34 during the cooling operation is received by the bottom surface of the drain pan 40 .

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. along the long side 70a toward the air conditioning room R side to form a raised portion 740 having a trapezoidal cross section.

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 raised portion 740 has a fixed blowout portion 75 in the central portion and has movable blowout 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 blowing part 77L includes a truncated cone-shaped rotating unit 78L that rotates within a predetermined angle range about an axis orthogonal to the panel surface 70S of the decorative panel 70 or the ceiling T1 surface. have. The movable blowout portion 77R also has a truncated cone-shaped rotating unit 78R that rotates within a predetermined angular range about an axis orthogonal to the panel surface of the decorative panel 70 or the ceiling T1 surface.

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 in the same plane even when the rotating unit 78 is rotated. It is designed to improve designability.

A first air outlet 754 is opened toward the long side (specific side) 70 a of the fixed outlet 75 , and a left/right airflow direction plate 752 (see FIG. 15) is provided in the first air outlet 754 . , an up-down wind direction plate 753 is provided on the surface side.

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 wind direction in the horizontal direction, the movable blowing part 77 does not require 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 opened along the inclined surface (side surface).

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. Rotate between two positions.

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 in this manner, the indoor unit 1 is of an omnidirectional (multidirectional) blowing type 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 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. The conditioned air is blown out substantially horizontally along the panel surface of the decorative panel 70 from the first air outlet 754 and the second air outlet 783. , the conditioned air can be spread farther.

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 .

Further, 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. As long as it is rotatable about an axis perpendicular to the axis, it may be a mode in which the movable blowout part 77 is simply arranged on both sides of the fixed blowout part 75 regardless of the appearance. included.

A partition plate unit 50 shown in FIG. 14 is attached to the back 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.

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

The ducts 51a and 51b are ducts for the fixed blowout portion 75, and as shown in FIG. A central blowing unit 751 having one chamber 751a allocated therefor is mounted.

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 serves as an airflow guide surface for spreading the blown air over a longer distance by providing the slope surface 712 .

According to this embodiment, since the air blown out from the first air outlet 754 and the second air outlet 783 flows along the panel surface of the decorative panel 70, the air intake portion 73 of the decorative panel 70 is The remaining panel surfaces, including the slope surface 712 of the wall 711, act 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. During this assembly, as indicated by the arrow in FIG. 6, an air guide path L is formed between the drain pan 40 and the decorative panel 70 to guide part of the air sucked from the air suction portion 73 to the second air suction chamber S2. be done.

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. A recess 46 is formed in the bottom of the drain pan 40 corresponding to .

<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 arranged in the fan chamber F in the heat exchanger 20 and fixed to the top plate 111 via the motor mounting base 361, the fan fixing portion 341, and the like.

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 . 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. When the blower fan 31 rotates, the air in the blower section 34 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, the air K drawn from the air suction portion 73 flows into the first air suction chamber S1, passes through the air guide path L, and also flows into the second air suction chamber S2. The air in the first air suction chamber S1 enters the fan 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.

<Suction grille>
Next, several forms of the intake grille 80 attached to the air intake portion 73 will be described.

First, as shown in FIG. 17, the panel portion 71 of the decorative panel 70 includes a panel body 71a having an air intake portion 73 and an air blowout portion 74, and two side panels 71b attached to both sides of the panel body 71a. I have.

A suction grille 80 having an air filter on the back side is attached to the air suction portion 73 so as to be at least one of openable and detachable. A plurality of grill bars 81 are provided on the suction grill 80 so as to be parallel to each other along the long sides 70 a and 70 b of the panel portion 71 .

Correspondingly, a dummy bar 82 is formed on the extension line of the grille bar 81 also on the side panel 71b side. It looks like a line, and the quality of the appearance deteriorates. A dummy crosspiece is a crosspiece which has a space between the crosspieces closed by a panel material and does not have a slit-shaped ventilation opening.

Therefore, in this embodiment, as shown in FIG. 18, the end portion 81e of each grill bar 81 is extended beyond the gap Da to the side panel 71b side, and the end portion of the dummy bar 82 on the side panel 71b side is extended to the side panel 71b side. 82e is retracted in the direction of the short sides 70c and 70d, and the gap Db between the end portions 81e and 82e is shifted from the gap Da.

According to this, when looking obliquely up at the decorative panel 70 installed on the ceiling surface from the position of the user in FIG. Since the background is visible and the black shadow of the gap Db becomes lighter, the presence of the gap Da becomes difficult to recognize, and the grill bar 81 and the dummy bar 82 appear to be connected to one, thereby improving the appearance quality.

Further, as a preferred embodiment, the gap Db between the end portion 81e of the grill bar 81 and the end portion 82e of the dummy bar 82 is not parallel to the gap Da between the butted portions of the panel main body 71a and the side panel 71b, but is aligned with the gap Da. On the other hand, each of the gaps Db is arranged at the same position in the vertical direction while having a predetermined inclination angle θ. By arranging them along the line, the gap Db can be made less conspicuous.

More preferably, as shown in FIG. 19, a rib 83 is formed on the rear side of the gap Db so as to extend from the end 82e of the dummy crosspiece 82 to the gap Da. , the gap Db can be made less conspicuous.

The rear side of the gap Db is the rear side of the gap Db when the decorative panel 70 installed on the ceiling surface is obliquely viewed from the position of the user in FIG. 1 . Also, in FIGS. 18 and 19 , the black-painted portion is the ventilation opening of the intake grille 80 .

Next, a preferred pitch arrangement of the grill bars 81 provided in the suction grill 80 will be described with reference to FIG.

Referring to FIG. 6 again, the indoor unit 1 according to this embodiment has a left front heat exchange section 20L and a right rear heat exchange section 20R in FIG. A first air suction chamber S1 is provided on the rear heat exchange section 20R side, and a second air suction chamber S2 is provided on the front heat exchange section 20L side.

On the other hand, since the air suction portion 73 is arranged on the rear side (long side 70b side) of the decorative panel 70, the air sucked from the air suction portion 73 flows into the first air suction chamber S1. Since the second air suction chamber S2 passes through the air guide path L, it is subject to ventilation resistance accordingly.

As a result, within the opening range of the air intake grille 80 attached to the air intake portion 73, there are areas where the air intake is large and areas where the air intake is small due to the arrangement of the air intake chambers S1 and S2. In FIG. 6, the suction amount is relatively small on the front side (closer to the air guide path L) of the suction grille 80, and gradually increases toward the rear side (long side 70b side).

Therefore, if the grill bars 81 are evenly arranged in the opening of the suction grille 80, the opening area will be evenly divided, and the opening area will be insufficient in the portion where the amount of suction is large, and the opening area will be excessive in the portion where the amount of suction is small. I feel like

Therefore, in this embodiment, as shown in FIG. 20, when a plurality of grill bars 81 are provided on the suction grille 80 parallel to each other along the long side 70b of the decorative panel 70, the opening area is increased at the portion where the suction amount is large. On the other hand, the opening area should be small in the part where the amount of suction is small.

That is, the interval between the grill bars 81 is narrowed on the front side of the intake grille 80, and the interval between the grill bars 81 is widened toward the rear side. As an example, as shown in FIG. 20, the front side of the intake grille 80 is 10.2 mm, 10.4 mm, 10.7 mm, 11.0 mm, 11.5 mm, 12.2 mm, 12.9 mm. The interval between the grill bars 81 is gradually widened from the rear side to the rear side.

In this way, by changing the interval between the grill bars 81 according to the portion where the amount of air sucked is small and the portion where the amount of air sucked is large, the air is efficiently sucked with respect to the opening area, so that the suction capacity is improved.

However, if the spacing between the grille bars 81 is changed abruptly, the arrangement of the grille bars 81 will look jerky and the appearance quality will be degraded. It can be made to look the same as an interval.

Next, with reference to FIGS. 21 to 24, some configurations of switches that are operated when the intake grille 80 is opened and closed will be described. This switch is included in the grille surface together with the grill bar 81 and is inconspicuous in appearance, but has a feature that it can be easily moved by putting a finger on it.

First, referring to FIG. 20, the intake grille 80 includes a base frame 80F that fits inside the opening of the air intake portion 73. As shown in FIG. Although FIG. 20 is a cross-sectional view, as described above, since the opening of the air suction portion 73 is square, the base frame 80F is also square. Also, as described above, a plurality of grill bars 81 are formed on the base frame 80F in parallel along the extending direction of the long side 70b of the decorative panel 70 in this example.

As shown in FIGS. 21(a) and 21(b), in this embodiment, of the base frame 80F, the intake grille 80 is opened and closed on a frame portion (open/close side frame portion) 80Fa on the side to be opened and closed near the air blowing portion 74. A switch 90 is provided which is operated at times.

The switches 90 are slidable in a direction orthogonal to the grill bar 81 and are arranged at, for example, two or three positions. FIG. 21(a) shows the bottom of one of them as seen from the air conditioning room R. FIG.

The open/close side frame portion 80Fa is formed with an apparent dummy crosspiece 82f that does not have a ventilation opening in order to unify the appearance with the grille crosspiece 81. As shown in FIG. Although not shown, the frame portion opposite to the opening/closing side frame portion 80Fa is connected to the edge of the air suction portion 73 by a hinge or the like.

22(a) and 22(b), the switch 90 has a substrate portion 91 slidably held by a portion of the opening/closing side frame portion 80Fa. As the air suction portion 73 slides, it appears and disappears into an engagement hole 732 formed in an inner edge 731 of the air suction portion 73 .

A pick piece 92 and a finger hook piece 93 are provided on the rear end portion 91 b of the substrate portion 91 . The knob piece 92 is bent substantially vertically downward from the rear end portion 91b of the base plate portion 91 toward the air conditioning room R side.

On the other hand, the finger hooking piece 93 is oriented obliquely to the gripping piece 92 (diagonally to the lower left in FIG. 22(b)) so as to create a gap FS between the gripping piece 92 and the gripping piece 92 for inserting the fingertip. is formed as

A substrate portion 91 of the switch 90 is slidably held by a pressing member 94 on the opening/closing side frame portion 80Fa. As shown in FIG. 22A, on the bottom surface side of the substrate portion 91, in this example, two leaf springs 94 each made of a band plate having a semicircular projecting curved portion 941 are arranged side by side.

On the other hand, on the open/close side frame portion 80Fa side, a rib plate 801 over which the projecting curved portion 941 of the plate spring 94 rides as the switch 90 slides is erected.

According to this, a predetermined click force is generated when the protruding curved portion 941 rides over the rib plate 801, and the switch 90 is moved to the lock position shown in FIG. 732) and the unlocked position shown in FIG.

As the switch 90 is slidably attached to the opening/closing side frame portion 80Fa, in this first example, the first grill bar 81a adjacent to the opening/closing side frame portion 80Fa and the second grill bar 81b adjacent thereto are arranged. is cut to a length corresponding to the width of switch 90 . In this specification, this cut off portion is referred to as a "missing portion" and denoted by C. As shown in FIG.

In order to make up for this missing part in appearance, a complementary dummy bar 921 is formed to have the same shape as the first grill bar 81a in the sense of complementing the shape of the lower end edge of the knob piece 92. A complementary dummy bar 931 for complementing the shape of the lower edge has the same shape as the second grill bar 81b, and when the switch 90 is in the locked position shown in FIG. The complementary dummy bar 921 is positioned at the missing part C of the first grill bar 81a, and the complementary dummy bar 931 of the finger hook piece 93 is positioned at the missing part C of the second grill bar 81b.

According to this, in the locked state, both the knob piece 92 and the finger hook piece 93 of the switch 90 are included in a part of the grill bar 81 and do not protrude from the grill surface, thereby improving the appearance quality.

Since a gap-like dividing line is visible between the cutout portion C of each of the grill bars 81a and 81b and the switch 90, when the decorative panel 70 is viewed from the air conditioning room R, where is the switch 90 arranged? You can easily recognize what is being done.

Also, since there is a gap FS between the knob piece 92 and the finger hook piece 93, the switch 90 can be easily moved to the unlock position shown in FIG. (The same applies when the switch 90 is returned to the lock position shown in FIG. 21(b)).

At the unlocked position shown in FIG. 21(c), the grip piece 92 is positioned within the missing portion of the second grill bar 81b, and the finger hook piece 93 abuts against the third grill bar 81c. That is, the distance between the adjacent grill bars 81 is the movement stroke of the switch 90 .

In order to prevent the fingertip from slipping on the finger hooking piece 93, it is preferable to provide a rib 932 on the lower edge side of the inner surface of the finger hooking piece 93, as shown in FIG. Moreover, it is preferable that the grip piece 92 is also provided with a rib 922 to prevent fingertips from slipping. Instead of ribs, for example, a plurality of hemispherical projections may be formed.

As a second example, as shown in FIG. 23, a portion of the opening/closing frame portion 80Fa is notched from the inner edge side thereof, and a portion of the switch 90 is inserted into the notched portion, and the mounting position of the switch 90 is changed to the air blowing portion. The knob 92 of the switch 90 may be included in the opening/closing side frame portion 80Fa by shifting to the 74 side.

In this case, as shown in the bottom view of FIG. 23(a), each part of the dummy bar 82f of the opening/closing side frame portion 80Fa and the first grill bar 81a is cut off by a length corresponding to the width of the switch 90. is called missing part C.

In the lock position of the switch 90, the complementary dummy bar 921 at the lower edge of the gripping piece 92 is arranged in the missing part C of the dummy bar 82f, and the complementary dummy bar 931 at the lower edge of the finger hooking piece 93 is positioned. It is arranged in the missing part C of the first grill bar 81a. Others may be the same as the first example.

According to this, as in the first example, when locked, the complementary dummy bar 921 of the knob piece 92 of the switch 90 is included in a part of the dummy bar 82f, and the complementary dummy bar 931 of the finger hook piece 93 is the first one. Since it is included in a part of the second grill bar 81 and does not protrude from the grill surface, the appearance quality is improved.

Further, in the first example, a part of the ventilation opening between the first and second grill bars 81a, 81b is blocked by the switch 90 when locked. , the switch 90 does not block the ventilation opening between the first grill bar 81a and the second grill bar 81b.

In this second example, when unlocking, as shown in FIG. 23(c), the complementary dummy bar 921 formed at the lower edge of the knob piece 92 is the missing part of the first grill bar 81a. C, and the complementary dummy crosspiece 931 of the finger hook piece 93 contacts the second grill crosspiece 81b.

Another embodiment of the switch will now be described with reference to FIG. A switch 90A according to this alternative embodiment includes a tab 92 only. Further, the specific frame portion 80Fa has a guide surface 85 that moves the switch 90A in an oblique direction. The knob piece 92 is in the grill surface together with the grill bar 81 when locked, and its presence is not conspicuous, but it protrudes downward from the grill surface only when unlocked.

The guide surface 85 of the specific frame portion 80Fa is positioned from high to low with the engagement hole 732 side drilled in the inner edge 731 of the air suction portion 73 as the high position and the first grill bar 81a side as the low position. It consists of an inclined surface that slopes downward to the right in FIG.

A substrate portion 91 of the switch 90A is held by a specific frame portion 80Fa so as to be slidable along the guide surface 85. As shown in FIG. For this holding, for example, the pressing member 94 shown in FIG. 21(b) may be used.

The tip portion 91a of the switch 90A appears and disappears in the engagement hole 732 as the switch 90A slides. A knob piece 92 is provided at the rear end portion 91b of the switch 90A. In this case, the knob piece 92 is arranged obliquely on the guide surface 85 and extends substantially vertically downward from the rear end portion 91b of the switch 90A. formed to face the

The switch 90A is positioned between the lock position shown in FIG. 24(a) in which the tip portion 91a enters the engagement hole 732 and the unlock position shown in FIG. to slide. In this example, the movement stroke of the switch 90A is defined by the distance between the frame portion 80Fa and the first grill bar 81a.

24(a), the lower edge 921 is at the same height as the grill surface GS including the lower edge 811 of each grill bar 81. At the unlocked position shown in (b), the lower edge 921 is set to a position lower than the grill surface GS, that is, to a length protruding downward from the grill surface GS toward the air conditioning room R side. The projection length from the grill surface GS is set to a length that allows the tip of the gripping piece 92 to be easily gripped with fingers.

According to this, the knob piece 92 is located within the grill surface GS including the lower edge 811 of the grill bar 81 when locked, and its presence is not conspicuous. The chisel protrudes downward from the grill surface GS, making it easier for the gripping piece 92 to be gripped.

Also in this other embodiment, a rib plate 801 constituting one of the click force generating means is erected in the frame portion 80Fa toward the guide surface 85, and the rear surface of the substrate portion 91 of the switch 90A is provided. A convex portion 95 constituting the other of the click force generating means is formed on the side.

In this case, the rib plate 801 side is flexible, and as the switch 90A slides, the protrusion 95 bends the tip of the rib plate 801 and generates a click sound to get over it. As a result, the switch 90A is selectively held at the locked position shown in FIG. 24(a) and the unlocked position shown in FIG. 24(b).

1: indoor unit, 10: main unit, 11: outer body, 111: top plate, 112/113: side plate, 12: mounting bracket, 13: heat insulating material,
20: heat exchanger, 20L: front heat exchange section, 20R: rear heat exchange section, 21: connecting plate,
30: Fan unit, 31: Blower fan, 32: Impeller, 33: Blower path, 34: Fan casing, 343: Blower unit, 35: Rotating shaft, 36: Fan motor,
40: drain pan, 43: ventilation hole, 45: gutter section,
50: partition plate unit, 51 (51a to 51d): duct,
70: decorative panel, 70a/70b: long side, 70c/70d: short side, 71: panel portion, 71a: panel body, 71b: side panel, 711: wall, 72: side wall portion, 721: frame, 722: beam , 73: air intake portion, 74: air blowout portion, 740: raised portion, 75: fixed blowout portion, 751: central blowout unit, 754: first air blowout port, 77 (77L, 77R): movable blowout portion, 78 (78L, 78R): rotation unit, 783: second air outlet,
80: suction grille, 80F: base frame, 80Fa: opening/closing side frame portion, 81 (81a, 81b...): grill crosspiece, 82/82f: dummy crosspiece,
90: switch, 91: board portion, 92: knob piece, 93: finger hook piece,
R: air conditioning room, T1: ceiling, T2: ceiling space, F: blower room, S1/S2: air suction chamber, L: air guideway.

Claims (3)

A box-shaped main unit installed in the ceiling space and a decorative panel attached to the bottom surface of the main unit along the ceiling surface, the decorative panel comprising a first panel having an air intake grille and the air intake A second panel adjacent to the grill is divided into at least two, and the air intake grill is provided with a plurality of grill bars parallel to each other at predetermined intervals along at least one direction. In a ceiling-embedded air conditioner in which a panel is formed with a plurality of dummy bars positioned on extension lines of the grill bars,
The ends of the grill bars extend toward the second panel across the dividing line between the first panel and the second panel, and cross the dividing line of the first panel toward the second panel. The end of the dummy crosspiece is set back from the parting line by the amount of extension, and the abutting part of the end of the grille crosspiece and the end of the dummy crosspiece is arranged at a position shifted from the parting line. and the surface of the second panel is exposed in the gap of the butted portion . A box-shaped main unit installed in the ceiling space and a decorative panel attached to the bottom surface of the main unit along the ceiling surface, the decorative panel comprising a first panel having an air intake grille and the air intake A second panel adjacent to the grill is divided into at least two, and the air intake grill is provided with a plurality of grill bars parallel to each other at predetermined intervals along at least one direction. In a ceiling-embedded air conditioner in which a panel is formed with a plurality of dummy bars positioned on extension lines of the grill bars,
The ends of the grill bars extend toward the second panel across the dividing line between the first panel and the second panel, and cross the dividing line of the first panel toward the second panel. The end of the dummy crosspiece is set back from the parting line by the amount of extension, and the abutting part of the end of the grille crosspiece and the end of the dummy crosspiece is arranged at a position shifted from the parting line. and
The butted portions are non-parallel to the parting line and have a predetermined inclination angle with respect to the parting line, and each of the butting portions is arranged along a straight line parallel to the parting line. ceiling -mounted air conditioner. A box-shaped main unit installed in the ceiling space and a decorative panel attached to the bottom surface of the main unit along the ceiling surface, the decorative panel comprising a first panel having an air intake grille and the air intake A second panel adjacent to the grill is divided into at least two, and the air intake grill is provided with a plurality of grill bars parallel to each other at predetermined intervals along at least one direction. In a ceiling-embedded air conditioner in which a panel is formed with a plurality of dummy bars positioned on extension lines of the grill bars,
The ends of the grill bars extend toward the second panel across the dividing line between the first panel and the second panel, and cross the dividing line of the first panel toward the second panel. The end of the dummy crosspiece is set back from the parting line by the amount of extension, and the abutting part of the end of the grille crosspiece and the end of the dummy crosspiece is arranged at a position shifted from the parting line. and
A ceiling -embedded air conditioner, wherein a blinding rib is formed from the end of the dummy crosspiece to the parting line at the butted portion.

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