JP7210700B2 - Air conditioner indoor unit - Google Patents

Description

An embodiment of the present invention relates to an indoor unit of a ceiling-mounted air conditioner.

A ceiling-mounted air conditioner includes an indoor unit installed in the ceiling space of a building, and a ceiling panel attached to the lower end of the indoor unit. The interior of the housing of the indoor unit is partitioned into a heat exchange chamber and a blower chamber. A heat exchanger that exchanges heat between refrigerant and air is arranged in the heat exchange chamber. A blower is arranged in the blower chamber. The blower includes a fan motor and a fan unit. The fan unit includes a fan rotated by a fan motor and a fan case surrounding the fan. The ceiling panel is exposed to the interior of the room to be air-conditioned along the ceiling surface, and the edge defining the outer shell of the ceiling panel is in contact with the ceiling surface.

Korean Patent No. 10-0829133 Japanese Utility Model Laid-Open No. 59-152308

As a measure for improving the air blowing performance of the air blower, for example, the size of the fan case is increased to increase the amount of air blown from the fan to the heat exchanger. On the other hand, measures for improving the workability of the indoor unit include, for example, lowering the height of the housing and reducing the installation space in the ceiling space.

However, these measures are in a conflicting relationship, and it is not easy to make them compatible. For this reason, conventionally, designs have been made in which, for example, the fan case is housed within the frame of the housing so that the ceiling panel does not become thick, or the amount of projection from the housing frame is minimized. Therefore, the size of the housing is increased by the size of the fan case.

SUMMARY OF THE INVENTION An object of the present invention is to obtain an air conditioner capable of improving the blowing performance of a blower and improving workability by reducing the thickness of an indoor unit.

According to the embodiment, an indoor unit of an air conditioner is installed in a ceiling space, and includes a unit body containing a heat exchanger and a blower in a housing, an air inlet for sucking air from the indoor space, and a temperature-controlled unit. A ceiling panel covering the lower part of the unit main body is provided with air outlets for blowing out air in one direction . The ceiling panel includes a panel body having an air inlet and an air outlet, and a suction grill covering the air inlet, and the lowermost part of the ceiling panel is positioned closer to the air inlet than the air outlet of the ceiling panel, A first slanted portion that is slanted upward from the bottom to a tip toward the side where the blowout port is arranged, and a second slanted portion that is slanted upward from the bottom to a tip to the side opposite to the side where the blowout port is arranged. 2 ramps. The first inclined portion includes a portion of the panel body and a portion of the intake grille, and the second inclined portion includes the portion of the entire intake grille included in the first inclined portion. It is configured including the remaining part except. The suction grill includes the lowest portion, and has a structure in which a grill first portion forming a first inclined portion and a grill second portion forming a second inclined portion are bent with the lowermost portion as a boundary .

1 is a perspective view of an indoor unit of an air conditioner according to a first embodiment; FIG. 1 is a perspective view showing an exploded indoor unit of an air conditioner according to a first embodiment; FIG. Fig. 2 is a cross-sectional view of the indoor unit of the air conditioner according to the first embodiment; Fig. 2 is a plan view of the indoor unit of the air conditioner according to the first embodiment, viewed from the indoor side; FIG. 2 is a plan view of the indoor unit of the air conditioner according to the first embodiment, with the intake grille opened and the shielding plate removed, as viewed from the indoor side. Fig. 3 is a perspective view showing an example of a state in which the intake grille of the indoor unit of the air conditioner according to the first embodiment is opened; It is a figure which shows the cross section of the temporary fixation mechanism in arrow A41 part of FIG. 4 in an arrow direction. FIG. 5 is a diagram showing a cross section of the fixing mechanism in the direction of the arrow A42 in FIG. 4 with the fixing piece at the mounting position; FIG. 5 is a diagram showing a cross section of the fixing mechanism in the direction of the arrow A43 in FIG. 4 with the fixing piece at the mounting position; FIG. 5 is a diagram showing a cross section of the fixing mechanism at arrow A44 in FIG. FIG. 5 is a view showing a cross section of the fixing mechanism in the direction of the arrow A42 in FIG. 4 with the fixing piece at the removal position; FIG. 5 is a diagram showing a cross section of the fixing mechanism in the direction of the arrow A43 in FIG. 4 with the fixing piece at the removal position; FIG. 4 is a cross-sectional view of an indoor unit of an air conditioner according to a second embodiment;

[First Embodiment]
The first embodiment will be described below with reference to FIGS. 1 to 12. FIG.

FIG. 1 is a perspective view of an indoor unit of an air conditioner, and FIG. 2 is a perspective view showing a state in which a unit body and a ceiling panel are separated from each other. FIG. 3 is a cross-sectional view of the indoor unit. FIG. 4 is a plan view of the indoor unit viewed from the indoor side. FIG. 5 is a plan view of the indoor unit viewed from the indoor side with a suction grill (to be described later) opened and a shielding plate removed.

As shown in FIGS. 1 to 5, an indoor unit 1 of an air conditioner includes a unit body 2 installed in a ceiling space and a ceiling panel 3 covering the lower part of the unit body 2. As shown in FIGS. The ceiling space is, for example, the space defined between the ceiling beams and the ceiling plate of the building.

The unit body 2 is a square, flat box-shaped element that opens downward, and is suspended from beams in the ceiling via four suspension bolts 4, for example.

As shown in FIG. 2, the unit body 2 includes a housing 5. As shown in FIG. The housing 5 has a depth dimension D, a width dimension W, and a thickness dimension H. The depth dimension D of the housing 5 is smaller than the width dimension W. The thickness dimension H of the housing 5 is sufficiently smaller than the depth dimension D and the width dimension W. The housing 5 is made of, for example, a thin metal plate such as sheet metal, and defines the outline of the unit main body 2 . The housing 5 has a top plate 6 , a first side plate 7 , a second side plate 8 , a third side plate 9 and a fourth side plate 10 .

The top plate 6 extends in a quadrilateral shape in the horizontal direction. The first side plate 7 and the second side plate 8 hang down from the short sides of the top plate 6 and face each other with a gap in the width direction of the housing 5 . A third side plate 9 and a fourth side plate 10 hang down from the long sides of the top plate 6 and face each other with a space therebetween in the depth direction of the housing 5 . These side plates 7 , 8 , 9 and 10 are connected so as to surround the top plate 6 .

Hanging hardware 11 is fixed to the first side plate 7 and the second side plate 8 . The hanging metal fittings 11 protrude from the first side plate 7 or the second side plate 8 in the width direction of the housing 5 . A lower end portion of the hanging bolt 4 is connected to the hanging metal fitting 11 . By adjusting the position of a nut (not shown) screwed onto the hanging bolt 4, the height of the protrusion of the unit body 2 from the ceiling is adjusted.

As shown in FIGS. 2 and 3, the housing 5 includes a housing portion 12 defined by a top plate 6, a first side plate 7, a second side plate 8, a third side plate 9, and a fourth side plate 10. have. The housing portion 12 is partitioned into two chambers, a heat exchange chamber 14 and a blower chamber 15 , by a partition plate 13 extending in the width direction of the housing 5 . The heat exchange chamber 14 and the blower chamber 15 are arranged in the depth direction of the housing 5 .

As shown in FIG. 3, the heat exchange chamber 14 accommodates a heat exchanger 16 and a drain pan 17 . The inner surfaces of the top plate 6 and the third side plate 9 facing the heat exchange chamber 14 are covered with a heat insulating material 18 such as expanded polystyrene. Similarly, the inner surface of the second side plate 8 facing the heat exchange chamber 14 is covered with another heat insulating material (not shown). A mechanical chamber (not shown) is formed at the end of the heat exchange chamber 14 adjacent to the first side plate 7 . The machine room is an independent room separated from the heat exchange room 14, and accommodates various refrigeration cycle devices (not shown) such as a drain pump, a refrigerant distributor, and a plurality of refrigerant pipes.

The heat exchanger 16 includes a plurality of radiation fins 19 and a plurality of heat transfer tubes 20 through which refrigerant flows. The heat exchanger 16 extends in the width direction of the housing 5 across between the second side plate 8 of the housing 5 and the machine room. The drain pan 17 is made of a heat insulating material such as polystyrene foam. The drain pan 17 supports the heat exchanger 16 from below so as to receive water droplets dripping from the heat exchanger 16 and surrounds the heat exchanger 16 in cooperation with the heat insulating material 18 and other heat insulating materials.

As shown in FIGS. 2, 3, and 5, the blower chamber 15 accommodates a blower 21. As shown in FIGS. The blower device 21 includes a fan motor 22 , a first fan unit 23 and a second fan unit 24 .
The fan motor 22 has a rotating shaft 26 supported by a motor housing 25 . The rotating shaft 26 includes a first shaft portion 26 a horizontally protruding from one end of the motor housing 25 and a second shaft portion 26 b horizontally protruding from the other end of the motor housing 25 . These shaft portions 26a and 26b are arranged coaxially with each other.

The first fan unit 23 and the second fan unit 24 are spaced apart from each other so as to face each other with the fan motor 22 interposed therebetween. The first fan unit 23 and the second fan unit 24 have a fan 27 and a fan case 28, respectively.

The fan 27 is configured as a cylindrical multi-blade fan (sirocco fan). The fan 27 of the first fan unit 23 is coaxially attached to the tip of the first shaft portion 26a of the rotating shaft 26 . The fan 27 of the second fan unit 24 is coaxially attached to the tip of the second shaft portion 26b of the rotating shaft 26 .

The fan case 28 has an air intake hole 29 and a nozzle portion 30 . The air intake holes 29 are open to the blowing chamber 15 on both sides along the axial direction of the fan 27 . The nozzle portion 30 has a discharge port 31 that passes through the partition plate 13 of the housing portion 12 and opens into the heat exchange chamber 14 . The ejection port 31 has a laterally long rectangular opening along the width direction of the housing 5 . Also, the outlet 31 of the first fan unit 23 and the outlet 31 of the second fan unit 24 are arranged side by side in the width direction of the housing 5 with a space therebetween.

The fan case 28 has a protruding portion 32 that protrudes downward from the lower edge of the housing 5, specifically the lower edges of the first to fourth side plates 7, 8, 9, and 10. As shown in FIG.

When the fan 27 of these fan units 23 and 24 rotates, the air inside the blowing chamber 15 is sucked inside the fan 27 through the air intake hole 29 . The air sucked by the fan 27 is discharged from the outer peripheral portion of the fan 27 into the inside of the fan case 28 and is also blown out to the heat exchange chamber 14 through the discharge port 31 of the nozzle portion 30 .

The ceiling panel 3 is an element that covers the lower part of the unit body 2 from the indoor side, and is arranged along the ceiling (not shown). The ceiling panel 3 has a panel body 33 and a suction grill 34. - 特許庁The panel main body 33 and the suction grille 34 are made of synthetic resin material, for example.

As shown in FIGS. 1 to 5, the panel main body 33 forms a quadrilateral contour that is larger than the depth dimension D and the width dimension W of the housing 5 along the ceiling, and covers the opening area of the housing 5. covering. The opening area of the housing 5 is an area surrounded by the lower ends of the first side plate 7 , the second side plate 8 , the third side plate 9 , and the fourth side plate 10 . Thereby, the panel main body 33 covers and shields the drain pan 17, the fan motor 22, and the fan case 28 accommodated in the accommodating portion 12. As shown in FIG.

The panel body 33 has a suction port 35 , a blowout port 36 and a working port 37 .
The suction port 35 has a laterally long shape along the width direction of the housing 5 and is arranged so as to face the blower chamber 15 . Air in the indoor space is sucked into the blowing chamber 15 through the suction port 35 by the rotation of the fan 27 .

The air outlet 36 has a laterally long shape along the width direction of the housing 5 and is arranged to face the heat exchange chamber 14 . The air blown into the heat exchange chamber 14 through the outlet 31 by the rotation of the fan 27 is temperature-controlled by the heat exchanger 16 and then blown into the room through the outlet 36 . In this embodiment, the panel main body 33 is provided with only one air outlet 36, and the air outlet 36 blows out temperature-controlled air in one direction of the opening.

A flap 38 is attached to the outlet 36 . The flap 38 is an element that changes the blowing direction of the air blown from the blower port 36 toward the room, and is rotatably supported by the panel body 33 . The flap 38 is preferably made of the same material as the panel main body 33 and the intake grille 34 and has the same color. The flap 38 is an elongated rectangular flat plate along the outlet 36, and is slightly smaller in length and width than the outlet 36 so as to open and close the outlet 36 without hindrance. However, the flap 38 is dimensioned so that there is no noticeable gap between the outlet 36 and the flap 38 when the outlet 36 is closed by the flap 38 .

The work opening 37 is an opening for accessing the suspension bolt 4 from below when adjusting the height of the protrusion of the unit body 2 from the ceiling. The work openings 37 are arranged at the four corners of the panel body 33 , one on each side in the longitudinal direction of the suction opening 35 and the blowing opening 36 . Normally, the working openings 37a positioned on both sides of the suction port 35 are blocked by the suction grills 34, and the working openings 37b positioned on both sides of the blowout port 36 are blocked by the shielding plate 38. The shield plate 39 is detachably attached to the panel body 33 .

The suction grille 34 is detachably attached to the panel body 33 so as to cover the suction port 35 and the working port 37a. The suction grille 34 has a suction portion 40 and a dummy portion 41 . The suction part 40 is laterally elongated along the width direction of the housing 5 , has a lattice shape capable of sucking the air in the room space, and is arranged so as to face the suction port 35 . The dummy portions 41 are arranged one by one on both sides in the longitudinal direction of the suction portion 40 so as to sandwich the suction portion 40 . The dummy portion 41 is a plate-like body that cannot suck in the air in the indoor space, but the lower surface of the plate-like body has a lattice shape similar to that of the suction portion 40 .

The suction part 40 has a lattice shape formed by longitudinally continuous horizontal bars 42a arranged at predetermined intervals and vertical bars 42b crossing the horizontal bars 42a. On the other hand, the dummy portion 41 has a grid shape that continues in the longitudinal direction along the horizontal beams 42a of the suction portion 40 and has horizontal beams 42c that are arranged at the same intervals as the horizontal beams 42a of the suction portion 40. . As a result, the suction portion 40 and the dummy portion 41 form a similar lattice form in appearance, in which the horizontal beams 42a and 42c are arranged at equal intervals along the longitudinal direction of the suction portion 40. As shown in FIG.

A filter 43 is detachably supported on the upper surface of the suction portion 40 . The filter 43 extends in the longitudinal direction of the suction part 40 so as to cover the suction port 35, and is configured by being divided into two as an example. These filters 43 face the fan cases 28 of the first fan unit 23 and the second fan unit 24, respectively. A filter element (not shown) is attached to the filter 43 to filter air in the indoor space sucked from the suction portion 40 .

The suction grille 34 rotates with respect to the panel body 33 with the longitudinal outer edge 34a as a fulcrum to open and close the suction port 35 and the working port 37a. The intake grill 34 is provided with an engaging piece (not shown) that engages with the engaging portion 33 a of the panel body 33 . The engaging portion 33a is arranged at outer peripheral edges 35a and 37c of the suction port 35 and the working port 37a. The engaging piece is arranged on the outer side edge 34a along the longitudinal direction of the suction grill 34. As shown in FIG. By engaging the engaging portion 33a with the engaging piece, the suction grille 34 hangs from the panel body 33 when the suction port 35 and the working port 37a are opened and closed, as shown in FIG. FIG. 6 is a perspective view showing an example of a state in which the intake grille 34 is open and hung.

In this state, as shown in FIGS. 5 and 6, the work opening 37a can be exposed to the inside of the room. Therefore, the hanging metal fitting 11 and the hanging bolt 4 can be visually observed through the work opening 37a. Accordingly, by adjusting the position of a nut (not shown) screwed onto the suspension bolt 4 from the work opening 37a, the height of the protrusion of the unit body 2 from the ceiling can be adjusted. That is, for example, the suction grille 34 can block the working opening 37a without adding a dedicated part for covering the working opening 37a, and the projection height of the unit body 2 can be adjusted only by opening the suction grille 34.

As shown in FIGS. 2 and 4, the suction grille 34 has a temporary fixing mechanism 44. As shown in FIG. The temporary fixing mechanism 44 is a mechanism for temporarily fixing the suction grille 34 to the panel main body 33 so that the suction port 35 and the working port 37a are respectively blocked. Temporary fixation is defined as holding and stabilizing the posture of the suction grille 34 until the suction grille 34 is fixed to the panel body 33 . Temporary fixing facilitates fixing operation of the suction grille 34 to the panel main body 33 .

FIG. 7 shows the configuration of the temporary fixing mechanism 44. As shown in FIG. FIG. 7 is a diagram showing a cross section of the temporary fixing mechanism 44 in the arrow A41 portion of FIG. 4 in the direction of the arrow. As shown in FIGS. 2, 4, and 7, the temporary fixing mechanism 44 has a temporary hook 45 and a temporary hook 46, and is located approximately in the center of the inner side edge 34b along the longitudinal direction of the intake grill 34. are placed.

The temporary hanging hook 45 includes a pedestal portion 45a, an arm portion 45b, and a return portion 45c, and is made of, for example, a synthetic resin material. The pedestal portion 45a is a portion fixed to the panel main body 33, and is positioned and fixed to the fixing portion 33b on the upper surface side of the panel main body 33 with screws 45d. The arm portion 45b hangs down from the pedestal portion 45a and is inserted into the gap 40a between adjacent horizontal beams 42a in the suction portion 40. As shown in FIG. As a result, the arm portion 45b has a structure of a cantilever spring that is flexurally deformed in the lateral direction of the suction portion 40 in the gap 40a, starting from the connecting portion 45e with the pedestal portion 45a. The return portion 45c is provided at the tip of the arm portion 45b, and hooks the temporary hooking claw 46 with an elastic restoring force from bending deformation of the arm portion 45b. The return portion 45c is accessible from the gap 40a. As a result, an external force can be applied from the return portion 45c to the arm portion 45b against the elastic restoring force.

The temporary hook 46 protrudes from one horizontal rail 42a defining the gap 40a toward the return portion 45c. The temporary hook 46 is hooked on the return portion 45 c to support the suction grille 34 with respect to the panel body 33 . When the suction grille 34 is closed so as to shield the suction port 35 and the working port 37a, the temporary hanging hook 46 is caught on the return portion 45c. As a result, the intake grille 34 is temporarily fixed to the panel body 33 . When opening the suction grille 34 so as to open the suction port 35 and the working port 37a, the arm portion 45b is tilted in a direction to move the return portion 45c away from the temporary hook 46, and the return portion 45c and the temporary hook 46 are separated. You should be able to untangle it.

As shown in FIGS. 2 and 4 , in addition to the temporary fixing mechanism 44 , the intake grille 34 has a fixing mechanism 47 . The fixing mechanism 47 is a mechanism for fixing the suction grille 34 temporarily fixed by the temporary fixing mechanism 44 to the panel main body 33 . According to the fixing mechanism 47, the suction grille 34 is positioned and fixed to the panel main body 33 in a state in which the suction port 35 and the working port 37a are blocked.

8 to 12 show the configuration of the fixing mechanism 47. FIG. 8 and 11 are diagrams showing the cross section of the fixing mechanism 47 at the arrow A42 portion in FIG. 4 in the direction of the arrow. 9 and 12 are diagrams showing the cross section of the fixing mechanism 47 at the arrow A43 portion in FIG. 4 in the direction of the arrow. FIG. 10 is a diagram showing a cross section of the fixing mechanism 47 at the arrow A44 portion in FIG. 4 in the direction of the arrow.

As shown in FIGS. 8 to 12 , the fixing mechanism 47 is a mechanism for fixing the intake grille 34 temporarily fixed by the temporary fixing mechanism 44 to the panel main body 33 . According to the fixing mechanism 47, the suction grille 34 is positioned and fixed to the panel main body 33 in a state in which the suction port 35 and the working port 37a are blocked. The fixing mechanism 47 has a fixing piece 48 , a piece base 49 and a fixing screw 50 and is arranged in the dummy section 41 .

The fixing piece 48 includes a first piece 48a, a second piece 48b, a third piece 48c, a fourth piece 48d, and a fifth piece 48e, and is made of the same synthetic resin material as the dummy portion 41, for example. It is The fixing piece 48 is fitted in a region surrounded by the suction portion 40 , the dummy portion 41 and the panel main body 33 .

The first piece portion 48 a is a plate-like body substantially flush with the dummy portion 41 and extends in the longitudinal direction of the intake grille 34 with substantially the same width dimension as the dummy portion 41 . The first piece portion 48a has a grid shape similar to that of the dummy portion 41, and on the lower surface thereof, horizontal beams are provided that are continuous with the horizontal beams 42a of the suction portion 40 at the same intervals as the horizontal beams 42c of the dummy portion 41. 42d is provided. As a result, the appearance of the first piece portion 48 a is substantially the same as that of the suction portion 40 and the dummy portion 41 .

The second piece 48b is a plate-like body rising from one long side edge of the first piece 48a, and has a guide hole 48f having a rectangular opening shape. A guide shaft 41b projecting from the dummy portion 41 is removably inserted into the guide hole 48f. As a result, the fixing piece 48 is positioned in an appropriate posture with respect to the dummy portion 41, and positioned slidably between one end and the other end of the guide hole 48f.

For example, as shown in FIG. 8, the position where one end 48g of the guide hole 48f and the guide shaft 41b contact defines the mounting position of the fixing piece 48 with respect to the dummy portion 41. As shown in FIG. At the mounting position, the end surfaces of the first piece 48a and the second piece 48b are in contact with the contact surface 40b of the suction portion 40, respectively. 8, 9, and 10 each show a state in which the fixing piece 48 is at the mounting position. On the other hand, as shown in FIG. 11, the position where the other end 48h of the guide hole 48f and the guide shaft 41b contact defines the position at which the fixing piece 48 is removed from the dummy portion 41. As shown in FIG. In the removed position, the end surfaces of the first piece 48a and the second piece 48b are both separated from the contact surface 40b of the suction portion 40. As shown in FIG. 11 and 12 each show a state in which the fixing piece 48 is at the removal position.

The third piece 48c is a plate-like body continuous with the second piece 48b. The third piece 48c is bent further upright from the upright end of the second piece 48b and extends in the direction in which the fixing piece 48 slides to the mounting position. As shown in FIG. 11, a gap 48i is formed between the third piece 48c and the upright end of the second piece 48b. That is, the third piece portion 48c protrudes in a hook shape from the second piece portion 48b.

As shown in FIG. 10, the fourth piece 48d is a plate-like body that is continuous with the first piece 48a. The fourth piece 48d is bent from one short side edge of the first piece 48a and extends in the direction in which the fixing piece 48 slides to the mounting position. The fourth piece 48d is continuous upward in a concave shape with respect to the first piece 48a. As a result, the extension end 48j of the fourth piece 48d is positioned so as to be recessed upward from the appearance decorative surface of the intake grille 34 having a lattice shape. The exterior decorative surface is composed of the horizontal beam 42c of the dummy portion 41 and the horizontal beam 42a of the suction portion 40. As shown in FIG. The extension end 48j is bifurcated, and clamps the screw shaft 50a of the fixing screw 50 when the fixing piece 48 slides to the mounting position.

As shown in FIGS. 6, 8, and 11, the fifth piece 48e is a plate-like body that continues to the first piece 48a and the second piece 48b like a wall. The fifth piece portion 48e is substantially flush with the outer surface 41c of the dummy portion 41 along the width direction of the intake grille 34 when the fixing piece 48 is slid to the mounting position.

As shown in FIGS. 8 to 12, the piece pedestal 49 includes a first piece 49a, a second piece 49b, a third piece 49c, a fourth piece 49d, a fifth piece 49e, and a sixth piece 49f. , a seventh piece 49g, an eighth piece 49h, and a ninth piece 49i, which are made of the same synthetic resin material as the suction portion 40, for example. The piece pedestal 49 is fixed to the suction part 40 .

The first piece 49a is a plate-like body that engages with the third piece 48c of the fixed piece 48, and extends in the longitudinal direction of the intake grille 34 toward the gap 48i. As shown in FIG. 8, when the fixing piece 48 is slid to the mounting position, the first piece 49a is inserted into the gap 48i and engages the third piece 48c of the fixing piece 48. As shown in FIG. Thereby, the fixing piece 48 is positioned in the suction portion 40 . That is, the first piece 49a protrudes like a hook from the main body of the piece pedestal 49 composed of the second piece 49b to the ninth piece 49i so as to be engageable with the third piece 48c. On the other hand, as shown in FIG. 11, when the fixing piece 48 slides to the removal position, the first piece 49a is pulled out of the gap 48i and disengaged from the third piece 48c of the fixing piece 48. As shown in FIG.

As shown in FIGS. 8 to 12, the second piece 49b is a plate-like body that rises from the edge of the first piece 49a on the side opposite to the insertion side into the gap 48i. The third piece 49c is a plate-like body extending from the upright end of the second piece 49b substantially parallel to the first piece 49a. The fourth piece portion 49d is a plate-like body that hangs down from the extension end of the third piece portion 49c. The fifth piece 49e is a plate-like body that continues like a wall from the first piece 49a and the second piece 49b. The sixth piece portion 49f is a plate-like body that continues to the second piece portion 49b, the third piece portion 49c, and the fourth piece portion 49d in a wall shape. The seventh piece portion 49g is a plate-like body extending substantially parallel to the first piece portion 49a from the extension end of the fourth piece portion 49d. The eighth piece 49h is a plate-like body that stands up from the extended end of the seventh piece 49g. The ninth side i is a plate-like body that continues like a wall from the seventh piece 49g and the eighth piece 49h. The seventh piece 49g, the eighth piece 49h, and the ninth piece 49i are fixed portions of the piece base 49 to the suction portion 40. As shown in FIG.

As shown in FIG. 10, a fixing screw 50 fixes the fixing piece 48 to the panel body 33 . Specifically, the fourth piece portion 48 d of the fixing piece 48 positioned on the suction portion 40 is fixed to the fixing base 33 c of the panel body 33 with a fixing screw 50 . When the fixed piece 48 is positioned in the suction portion 40, the first piece 49a is inserted into the gap 48i and engaged with the third piece 48c of the fixed piece 48, and the extension end of the fourth piece 48d is engaged. 48j sandwiches the screw shaft 50a of the fixing screw 50. FIG. The fixed pedestal 33c is a part that constitutes a partition that separates the suction port 35 of the panel body 33 and the working port 37a. By tightening the fixing screw 50, the fourth piece 48d is fastened to the fixing base 33c, and the suction grille 34 is positioned and fixed to the panel main body 33 via the fixing piece 48. As shown in FIG. Conversely, by loosening the fixing screw 50, the fastening between the fourth piece 48d and the fixing base 33c is released, and as shown in FIG. 11, the fixing piece 48 can be slid to the removal position.

Therefore, when opening and closing the suction port 35 and the working port 37a of the panel body 33, the fixing screw 50 must be loosened. That is, the user can be prevented from touching the fan motor 22 and the fan 27 of the housing 5 without using a predetermined tool for loosening the fixing screw 50 . Further, the fixing screw 50 can be accessed from the gap 40 a of the suction portion 40 . However, the head portion 50b of the fixing screw 50 is located at a position recessed upward from the appearance decorative surface of the intake grille 34 having a lattice shape. Therefore, the head 50b of the fixing screw 50 can be made inconspicuous in appearance without adding a separate part such as a screw cap.

As shown in FIG. 3 , in this embodiment, the ceiling panel 3 has a first inclined portion 51 and a second inclined portion 52 . The ceiling panel 3 covers the projecting portion 32 of the fan case 28 .

The first slanted portion 51 is slanted upward from the portion 3a where the ceiling panel 3 covers the lowermost portion 32a of the projecting portion 32 (hereinafter referred to as the cover portion) 3a toward the side where the outlet 36 is arranged to the tip 51a. ing. The first inclined portion 51 includes a panel inclined portion 33d that is part of the panel main body 33 and a grill first portion 34c that is part of the intake grille 34 as main elements. In addition, the first inclined portion 51 also includes a panel frame portion 33e that is part of the panel body 33 and the flap 38 as constituent elements. The panel frame portion 33e is a frame portion of the panel body 33 to which the intake grille 34, the flap 38, and the shield plate 39 are respectively attached. Also, the first grill portion 34c is configured to include portions of the suction portion 40 and the dummy portion 41, respectively.

The second slanted portion 52 is slanted upward from the base end of the cover portion 3a to the side opposite to the arrangement side of the outlet 31 to the tip 52a. That is, the second inclined portion 52 is inclined opposite to the first inclined portion 51 with the cover portion 3a as a boundary. The second inclined portion 52 is configured including the second grill portion 34d as a main element. In addition, the second inclined portion 52 also includes a panel frame portion 33e as a component. The grill second portion 34 d is the remaining portion of the entire suction grill 34 excluding the grill first portion 34 c included in the first inclined portion 51 . The second grill portion 34d includes the suction portion 40 and the dummy portion 41, excluding the portions constituting the first grill portion 34c.

The cover part 3a corresponds to the lowest part of the ceiling panel 3. As shown in FIG. Therefore, the ceiling panel 3 is substantially flat in appearance, with the first inclined portion 51 on one side in the depth direction of the housing 5 and the second inclined portion 52 on the other side, with the cover portion 3a at the bottom as a boundary. configured The inclination angles of the first inclined portion 51 and the second inclined portion 52 with respect to the horizontal plane may be set according to the degree of projection of the projecting portion 32 of the fan case 28 . These tilt angles may be the same or different.

In order to configure the ceiling panel 3 as described above, the panel main body 33 has a panel inclined portion 33d on the side of the outlet 36 with the cover portion 3a interposed therebetween. The suction grille 34 has a structure in which a grille first portion 34c and a grille second portion 34d are bent with the cover portion 3a as a boundary. The filter 43, like the suction grille 34, has a structure in which a first filter portion 43a and a second filter portion 43b are bent at a support portion 43c at the cover portion 3a.

As shown in FIGS. 3 and 6, the vertical thickness H51 of the tip 51a of the first inclined portion 51 is thinner than the thickness H52 of the tip 52a of the second inclined portion 52. As shown in FIGS. The tip 51a of the first inclined portion 51 is defined by the first panel frame portion 33f of the panel frame portion 33e. The first panel frame portion 33f is a longitudinal portion of the panel frame portion 33e located on the attachment side of the flap 38 and the shield plate 39. As shown in FIG. The tip 52a of the second inclined portion 52 is defined by the second panel frame portion 33g of the panel frame portion 33e. The second panel frame portion 33g is a longitudinal portion of the panel frame portion 33e located on the mounting side of the intake grille 34. As shown in FIG. That is, the first panel frame portion 33f has a flatter shape than the second panel frame portion 33g. The dimensional ratio between the thickness H51 and the thickness H52 may be set according to the inclination angle of the first inclined portion 51 and the second inclined portion 52 with respect to the horizontal plane, in other words, the degree of projection of the projecting portion 32 of the fan case 28 .

As described above, according to the present embodiment, the ceiling panel 3 having the first inclined portion 51 and the second inclined portion 52 covers the projecting portion 32 of the fan case 28 . Therefore, the fan case 28 can be enlarged to increase the amount of air blown from the fan 27, while the thickness dimension H of the housing 5 can be suppressed. By suppressing the thickness dimension H of the housing 5, the indoor unit 1 can be thinned, and the ceiling space, which is a factor restricting the installation of the indoor unit 1 in the ceiling space, can be reduced. As a result, it is possible to improve workability when installing the indoor unit 1 in the ceiling space. Further, even when the fan case 28 is maximized to increase the airflow rate of the fan 27, the thickness of the ceiling panel 3 can be reduced in design.

Further, according to the present embodiment, the thickness H51 of the tip 51a (first panel frame portion 33f) of the first inclined portion 51 is the thickness of the tip 52a (second panel frame portion 33g) of the second inclined portion 52. Thinner than H52. The tip 51a is located on the side where the outlet 36 is arranged with respect to the cover portion 3a which is the lowest part of the ceiling panel 3, and the tip 52a is located on the opposite side. Therefore, by installing the indoor unit 1 so that the tip 51a faces the room and the tip 52a faces the wall, the thickness H51 of the tip 51a, which is more noticeable to the user, can be made thinner than the thickness H52 of the tip 52a. can be done. As a result, it is possible to design the ceiling panel 3 as a whole to look thin in appearance.

As described above, in the present embodiment, the suction grille 34 has a structure in which the grille first portion 34c and the grille second portion 34d are bent with the cover portion 3a as a boundary. However, the intake grille 34 does not have to be bent in this manner. Hereinafter, an embodiment in which the intake grille is not bent and has a substantially planar structure in appearance will be described as a second embodiment.

[Second embodiment]
FIG. 13 is a cross-sectional view of the indoor unit 1a of the second embodiment. The indoor unit 1a of the second embodiment differs from the indoor unit 1 of the first embodiment in the configuration of the ceiling panel 53. As shown in FIG. Other than this, the configuration of the indoor unit 1a is the same as that of the indoor unit 1. As shown in FIG. Therefore, configurations similar to those of the indoor unit 1 are denoted by the same reference numerals in the drawings, and descriptions thereof are omitted.

As shown in FIG. 13 , the ceiling panel 53 has a panel body 54 and an intake grille 55 . Also, the ceiling panel 53 has a first inclined portion 56 and a second inclined portion 57 .

The first slanted portion 56 is slanted upward from the cover portion 3a to the side where the outlet 36 is arranged to the tip 56a. The first slanted portion 56 is mainly composed of the panel slanted portion 54 a which is a part of the panel main body 54 and does not include the suction grille 55 .

The second slanted portion 57 is slanted upward from the base end of the cover portion 3a to the side opposite to the arrangement side of the outlet 36 to the tip 57a. That is, the second inclined portion 57 is inclined opposite to the first inclined portion 56 with the cover portion 3a as a boundary. The second inclined portion 57 includes the entire intake grille 55, that is, the entire intake portion and the dummy portion as main elements.

Therefore, the panel main body 54 has a panel inclined portion 54a arranged on the outlet 36 side across the cover portion 3a, as in the first embodiment. On the other hand, the intake grille 55 does not have a structure bent at the cover portion 3a, and is not arranged on the outlet 36 side across the cover portion 3a. It should be noted that the filter 58, like the suction grille 55, is not bent and is not arranged on the blowout port 36 side across the support portion 58a of the cover portion 3a.

According to this embodiment, when the indoor unit 1a is installed such that the tip 56a (first panel frame portion 33f) faces the room and the tip 57a (second panel frame portion 33g) faces the wall, When viewed from the top, the lattice form of the intake grille 55 is hidden behind the panel inclined portion 54a. For this reason, unlike the grill first portion 34c of the first embodiment, the lattice shape does not have to be exposed to the indoor side. Therefore, when viewed from the interior space, the panel inclined portion 54a having no grid shape is exposed to the interior side, so that the ceiling panel 53 can be designed to be flat and neat in appearance.

Although the first and second embodiments of the present invention have been described above, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

DESCRIPTION OF SYMBOLS 1... Indoor unit, 2... Unit main body, 3... Ceiling panel, 3a... Cover part, 5... Housing, 16... Heat exchanger, 21... Air blower, 27... Fan, 28... Fan case, 32... Fan case Protruding portion 32a Bottom of protruding portion 35 Suction port 36 Blow-out port 51 First inclined portion 51a Tip of first inclined portion 52 Second inclined portion 52a Second 2 tip of the slope.

Claims (3)

a unit main body installed in a ceiling space and containing a heat exchanger and a blower in a housing;
a ceiling panel covering the lower part of the unit main body, in which an air inlet for sucking air in the indoor space and an air outlet for blowing out temperature-controlled air in one direction are arranged, respectively;
The ceiling panel includes a panel main body having the air inlet and the air outlet, respectively, and an air intake grill covering the air inlet. and a first inclined portion that slopes upward from the bottom to the tip to the side where the blowout port is arranged, and the bottom is the base end and is opposite to the side where the blowout port is arranged a second inclined portion that slopes upward to the tip to the side,
The first inclined portion includes a portion of the panel body and a portion of the suction grille,
The second slanted portion includes a portion of the entire intake grille excluding a portion included in the first slanted portion,
The intake grill includes the lowest portion, and has a structure in which a grill first portion forming the first inclined portion and a grill second portion forming the second inclined portion are bent with the lowermost portion as a boundary. eggplant
Air conditioner indoor unit. The suction grille includes a grid-shaped suction portion capable of sucking air from the indoor space, and dummy portions disposed on both sides in the longitudinal direction of the suction portion and unable to suck the air from the indoor space, 2. The indoor unit of an air conditioner according to claim 1, wherein the lower surface of the dummy part has a grid shape similar to the grid shape of the suction part. The suction grille has a fixing mechanism for fixing the suction grille to the panel body, and the fixing mechanisms are provided in the dummy portions, respectively, and the lower surface of the fixing mechanism has the same grid shape as the dummy portion. The indoor unit according to claim 2.

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