JP2019178828A - Air conditioner - Google Patents

Abstract

To arrange a grille crosspiece so as to effectively use air sucked from an opening part of a suction grille, in installing a grille crosspiece to a suction grille.SOLUTION: When a plurality of grille crosspieces 81 is installed to a suction grille 80 so as to be in parallel with each other, an interval between the grille crosspieces 81 is widened in a part where a suction quantity is large, while the interval between the grille crosspieces 81 is narrowed in a part where the suction quantity is small.SELECTED DRAWING: Figure 20

Description

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

  An air conditioner (indoor unit) includes 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), and the like are housed. The decorative panel is provided with an air suction port that communicates with the air suction side passage of the blower and an air blowout port that communicates with the air discharge side passage of the blower.

  Among these, a suction grille having an air filter is detachably attached to the air suction port. For example, as described in Patent Documents 1 and 2, a plurality of grill bars are provided on the suction grill so as to be parallel to each other along the long side of the panel body.

  By the way, in the ceiling-embedded air conditioner (indoor unit) described in Patent Document 3, for example, the suction amount is within the opening range of the suction grille due to the arrangement of the blower fan and the heat exchanger. There are many parts and few parts.

  Therefore, if the grill bars are evenly arranged at the opening of the suction grille, the opening area is equally divided, the opening area is insufficient in the part where the suction amount is large, and the opening area is excessive in the part where the suction amount is small. This causes a problem that the air sucked from the opening of the suction grill cannot be used effectively.

JP-A-6-147534 JP 2009-103420 A JP 2000-2137767 A

  Accordingly, an object of the present invention is to arrange a grille bar so that the air sucked from the opening of the suction grill can be used effectively when the grille bar is provided on the suction grill in the ceiling-embedded air conditioner. is there.

  In order to solve the above-described problems, the present invention includes a box-shaped main body unit installed on the back of a ceiling, and a decorative panel attached to the bottom surface of the main body unit along the ceiling surface. In the ceiling-embedded air conditioner in which a suction grille having a plurality of grille bars provided in parallel to each other at an opening of the air suction part is attached, The interval is gradually increased from one side of the opening to the other side facing the opening.

  As a specific aspect, the heat exchanger has a front first heat exchanging portion and a rear second heat exchanging portion that are arranged to face each other in the main body unit, and the blower is the first heat exchanging portion. Between the decorative panel and the main body unit, and the air suction part is disposed on the second heat exchanging part on the rear side in the decorative panel. An air guide path from the air suction part to the front first heat exchanging part is formed, and one side of the opening is the air guide path side, and the interval between the grill bars is the distance between the openings. The size gradually increases from one side of the wind guide path toward the other side facing the side.

  According to the present invention, when providing a plurality of grill bars parallel to each other in the suction grill, by widening the gap between the grill bars in a portion with a large suction amount, and narrowing the interval between the grill bars in a portion with a small suction amount, Since air is efficiently sucked into the opening area, the air sucked from the opening of the suction grill can be used effectively.

Explanatory drawing which shows the installation state of the ceiling-embedded air conditioner by this invention. The perspective view which shows the said ceiling embedded type air conditioner. The disassembled perspective view of the said ceiling embedded type air conditioner. FIG. 3 is a schematic sectional view taken along line AA in FIG. 2. FIG. 5 is a schematic cross-sectional view taken along the line CC in FIG. 4. FIG. 3 is a schematic sectional view taken along line BB in FIG. 2. FIG. 5 is a schematic cross-sectional view along the line DD in FIG. 4. FIG. 3 is a perspective sectional view taken along line BB in FIG. 2. The bottom side perspective view of the main-body unit with which the said ceiling-embedded air conditioner is provided. (A) The perspective view which isolate | separates and shows a decorative panel and a flame | frame, (b) The perspective view which shows the packing state of a decorative panel. The bottom view which looked at the decorative panel at the time of a shutdown from the air-conditioning room side. The bottom view which looked at the decorative panel at the time of driving | operation from the air-conditioning room side. The perspective view of FIG. The perspective view which shows the partition plate unit attached to the back surface side of a decorative panel. The perspective view which shows the center 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. The principal part enlarged plan view which shows the 1st structural example of the grill bar provided in an air suction part. The principal part enlarged plan view which shows the preferable aspect of the said 1st structural example. The principal part expanded sectional view which shows the 2nd structural example of the grill bar provided in an air suction part. (A) Bottom view seen from the air-conditioning room side showing a part to which a switch for opening and closing the suction grille is attached, (b) Along the EE line of (a) when the switch is in the locked position Sectional drawing, (c) Sectional drawing along the EE line of (a) when the said switch exists in an unlocking position. (A) (a) The perspective view seen from the downward direction of the said switch, (b) Side view. In the example of changing the mounting position of the switch, as in FIG. 21, (a) a bottom view showing the portion where the switch for opening and closing the suction grill is mounted, as viewed from the air conditioning room side, (b) the switch is locked Sectional drawing along the FF line of (a) when it exists in a position, (c) Sectional drawing along the FF line of (a) when the said switch exists in an unlocking position. In another embodiment of the switch, (a) a sectional view showing when the switch is in the locked position, (b) a sectional view showing when the switch is in the unlocked position.

  Hereinafter, some modes for carrying out the present invention will be described in detail as examples based on the accompanying drawings. 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 the air conditioning room R are connected by a gas pipe and a liquid pipe (both not shown), and a refrigerant circuit. Form.

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

  Referring to FIG. 3, the main unit 10 includes 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 four sides of the top plate 111. The top plate 111 has a long side plate as a side plate 112 and a short side plate as a side plate 113, and two mounting brackets 12 are fixed to the two side plates 113 facing each other.

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

  The decorative panel 70 is attached to a rectangular panel portion 71 that is larger than the top plate 111 and a bottom surface of the box-shaped outer body 11 that is erected from the back surface of the panel portion 71 to the main body unit 10 side. The side wall portion 72 is provided.

  The panel portion 71 includes an air suction portion 73 that is squarely opened on the one side 70b side that exists behind the long side facing each other, and an air blowing portion on the other side 70a side that exists on the front side of the long side that faces the one side 70b. 74 is provided.

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

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

  Both the frame 721 and the beam 722 are made of sheet metal, and the beam 722 is disposed on a partition portion 713 formed between the air suction portion 73 and the air blowing portion 74 of the panel portion 71.

  According to this, as shown in FIG. 10 (b), when the decorative panel 70 is packed, the beam 722 is pressed by the projecting piece on the packing material side, so that it is possible to prevent damage due to an impact such as dropping. Become. Further, by providing the beam 722, a structure that can withstand a load applied in a direction parallel to the panel surface 70S of the decorative panel 70 is obtained.

  The beam 722 may be bridged between the long sides 70a and 70b of the frame 721 depending on the shape and arrangement of the air suction part 73 and the air blowing part 74 and the like.

<Outer trunk>
Next, components housed in the main unit 10 will be described with reference to FIGS. On the inner surface of the top plate 111 of the outer cylinder 11, a heat insulating material 13 formed of a thick polystyrene foam is provided.

  On the inner surfaces of the side plates 112 and 113 of the outer body 11, it is only necessary to provide a thin heat insulating sheet (not shown) without providing the heat insulating material 13. The center of the heat insulating material 13 is opened, and 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 that houses electrical components (not shown) for controlling the indoor unit 1 is attached to the outer surface of the right side surface of the outer trunk 11.

<Heat exchanger>
The heat exchanger 20 is a fin tube type formed by a plurality of strip-shaped aluminum fins 23 arranged in parallel and a plurality of heat transfer tubes 22 penetrating the aluminum fins 23. 20L, and two heat exchanging parts, the rear heat exchanging part 20R on the right side in FIG.

  The front heat exchanging part 20L and the rear heat exchanging part 20R are arranged so as to face each other. However, in order to keep the height dimension low and increase the amount of air flow, preferably the distance between the upper end sides is as shown in FIG. They are combined in an inverted C shape that is wider than the distance on the lower end side. In addition, it is good also not as a reverse letter-shaped shape but as the letter-shaped shape whose space | interval of an upper end side is narrower than the space | interval of a lower end side.

  In any case, the left and right ends of the front heat exchanging portion 20L and the rear heat exchanging portion 20R are connected by the connecting plate 21, and the space inside the heat exchanger 20 becomes the blower chamber F. The bottom surface of the heat exchanger 20 (the surface between the lower ends of the front heat exchange unit 20L and the rear heat exchange unit 20R) is closed by a drain pan 40 described later.

  In addition, a first air suction chamber S1 is provided between the outer cylinder 11 and the rear heat exchange part 20R in the interval between the heat exchanger 20 and the outer cylinder 11, and between the outer cylinder 11 and the front heat exchange part 20L. A second air suction chamber S2 is provided therebetween. The first air suction chamber S1 is disposed immediately above the air suction portion 73, and the second air suction chamber S2 communicates with the air suction portion 73 via an air guide path L described later.

<Blower fan>
The fan unit 30 is disposed in the blower 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 mounting base 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 mount 361 (see FIG. 3).

  The blower fan 31 includes a cylindrical impeller 32 having a plurality of blades, a spiral fan casing 34 that houses the impeller 32, and a rotating shaft 35 that is coupled to the center of the impeller 32.

  The number of the blower fans 31 is arbitrarily selected according to the air conditioning capability. In this embodiment, four fans are arranged side by side on the same axis. In addition, each ventilation fan 31 has the same structure.

  In the fan unit 30, the fan motor 36 is fixed to the top plate 111 with the motor mounting base 361, and then two blower fans 31 are connected to each other at both ends of the fan motor 36 by the rotation shaft 35. Both ends of the rotating shaft 35 are fixed to the top plate 111 via a bearing plate (not shown) made of, for example, an L-shaped bracket. Further, a fan fixing portion 341 (see FIG. 4) is also provided on the upper portion of the fan casing 34, and this is fixed to the top plate 111 with screws.

  The fan casing 34 includes a housing portion 342 that houses the impeller 32, and a cylindrical air blowing portion 343 that is continuously extended from the housing portion 342 and extends below 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 the side surface of the housing portion 342.

  The fan casing 34 may be formed by dividing it vertically into a plane parallel to the axis of the impeller 32 so that the impeller 32 can be accommodated therein, or left and right on a plane perpendicular to the axis of the impeller 32. You may divide and form. In addition, in the fan casing 34, the accommodating part 342 and the ventilation part 343 become the ventilation path 33 of the blowing air H continuously.

  As described above, in this embodiment, since the fan unit 30 is disposed 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 blower chamber The inside of F becomes negative pressure, and the air from the air suction part 73 enters the blower chamber F through the front heat exchange part 20L and the rear heat exchange part 20R, and is sucked into the fan suction port 344 and around the impeller 32 The blown air is blown out in one direction along the air blowing path 33 in the fan casing 34, and blown out from the air blowing portion 74 to the air conditioning chamber R.

<Drain pan>
A drain pan 40 that receives drain water generated by the heat exchanger 20 is provided at the lower end of the heat exchanger 20. The drain pan 40 is integrally formed with a resin-made drain sheet 42 provided on a surface facing the heat insulating member 41 and the heat exchanger 20 made of polystyrene foam.

  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 is also a partition plate that partitions the blower chamber F and the air guide path L described later. The drain pan 40 is provided with ventilation holes 43 for the number of the blower fans 31 (four in this embodiment) into which the blower 343 having the cylindrical shape of the fan unit 30 is fitted.

  As described above, the heat exchanger 20 has the front heat exchanging part 20L and the rear heat exchanging part 20R arranged in an inverted C shape, and the bottom surface is narrower than the upper surface. The area occupied by the drain pan 40 in the main body unit 10 is reduced, the ventilation resistance by the drain pan 40 is reduced, the ventilation area around the drain pan 40 is expanded, and the ventilation efficiency is improved.

  On the drain sheet 42 side of the drain pan 40, a flange 45 is provided for receiving drain water generated by the heat exchanger 20. In addition, since the dew condensation 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, it is preferable to perform waterproofing around the ventilation holes 43.

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

<Makeup panel>
The configuration of the decorative panel 70 will be described with reference to FIGS. 11 to 13. The decorative panel 70 includes an air blowing portion 74 on one long side 70 a side and an air suction portion 73 on the other long side 70 b side. The air blowing portion 74 is a part of the panel portion 71. Is formed as a raised portion 740 that is raised in a trapezoidal cross section toward the air conditioning room R side along the long side 70a.

  According to this embodiment, the raised portion 740 is an oval that is a rounded rectangle composed of two parallel lines of equal length and two semicircles, and the side surface (circumferential surface) has an inclined surface. The raised portion 740 has a fixed blowing portion 75 in the central portion, and includes movable blowing portions 77L and 77R on both the left and right sides. When there is no need to distinguish between the movable blowing portions 77L and 77R, the movable blowing portions 77 are collectively referred to as a movable blowing portion 77.

  Referring also to FIG. 16, the movable air outlet 77L includes a truncated cone-shaped rotation unit 78L that rotates within a predetermined angle range about an axis perpendicular to the panel surface 70S or the ceiling T1 surface of the decorative panel 70. Have. Similarly, the movable blowout portion 77R has a truncated cone-shaped rotation unit 78R that rotates in a predetermined angle range about an axis orthogonal to the panel surface of the decorative panel 70 or the surface of the ceiling T1.

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

  As can be seen from the perspective view of FIG. 13, the top surface (bottom surface) 751 of the fixed outlet 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. The design is improved.

  The fixed air outlet 75 has a first air outlet 754 that opens toward the long side (specific side) 70a, and a left and right airflow direction plate 752 (see FIG. 15) is provided in the first air outlet 754. A vertical wind direction plate 753 is provided on the surface side.

  The movable air outlet 77 has a second air outlet 783 in a part of the side surface of the rotary unit 78, and a vertical air direction plate 782 is provided at the second air outlet 783. Since the wind direction in the left-right direction is changed by the rotation of the rotation unit 78, the left and right wind direction plates are not necessary for the movable blowing portion 77. 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 these air outlets 754 and 783 a sense of design uniformity. It is opened along the inclined surface (side surface).

  The air blowing direction of the fixed blowing portion 75 is the long side 70a direction, while the movable blowing portion 77 has a first position where the second air blowing port 783 faces the long side 70a and the first side where the second air blowing port 783 faces the short sides 70c and 70d. Rotates between two positions.

  As shown in FIG. 11, when the movable outlet 77 is in the first position, the first air outlet 754 and the second air outlet 783 are arranged in a straight line. In this case, it is preferable to provide dummy flaps 791 and 791 on both sides of the first air outlet 754 so that the first air outlet 754 and the second air outlet 783 are continuous. The dummy flap 791 is also disposed 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 blowing portion 77L is in the first position and the right movable blowing portion 77R is in the second position facing the short side 70d. Thus, since the movable blowing part 77 is rotatable, the indoor unit 1 is an omnidirectional (multidirectional) blowing type except the direction of the long side 70b on the rear side.

  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 is a conical surface, a continuity with the first air outlet 754 is obtained in appearance. That is, even if the movable blowing part 77 is rotated, the basic shape (oval raised shape) of the air blowing part 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 are raised in a trapezoidal cross section with a part of the panel portion 71 facing the air conditioning room R side. This is formed on the side surface of the raised portion 740 so that conditioned air is blown out from the first air outlet 754 and the second air outlet 783 in a substantially horizontal direction along the panel surface of the decorative panel 70. , Can spread the conditioned air farther.

  In addition, the conditioned air is blown out simultaneously from the first air outlet 754 and the second air outlet 783, but the air flow blown out from the first air outlet 754 and the air blown out from the second air outlet 783. It is difficult for a boundary to form between the air flow and the air conditioning room R can be harmonized uniformly.

  In addition, unlike the said embodiment, the 1st air blower outlet 754 and the 2nd air blower outlet 783 may be opened in the vertical surface orthogonal to the panel surface (or ceiling surface) of the decorative panel 70. FIG.

  Moreover, in the said embodiment, although the fixed blowing part 75 and the right and left movable blowing part 77 are stored in the oval protruding part 740, the movable blowing part 77 is with respect to the panel surface or ceiling T1 surface of the decorative panel 70. As long as it can rotate around an orthogonal axis, the movable blowout portion 77 may be simply disposed on both sides of the fixed blowout portion 75 without being restricted by the appearance. included.

  A partition plate unit 50 shown in FIG. 14 is attached to the back side of the decorative panel 70. Referring to FIGS. 4 and 9 together, the partition plate unit 50 has four ventilation holes 43 (43a to 43a) formed in the drain pan 40 on the upper surface side (the surface side facing the drain pan 40). 43d (see FIG. 9), and four ducts 51 (51a to 51d) that are respectively fitted to the air blowing portion 343 of the fan unit 30 are provided.

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

  The ducts 51a and 51b are ducts for the fixed blowing part 75. As shown in FIG. 15, the ducts 51a and 51b span the ducts 51a and 51b on the lower surface side of the partition plate unit 50 (the surface side facing the back surface of the decorative panel 70). A central blowing unit 751 having one chamber 751a allocated accordingly is attached.

  A left and right wind direction plate 752 is provided in the chamber 751a. Moreover, the 1st air blower outlet 754 is formed in the front side of the center blowing unit 751, and the up-down wind direction board 753 is provided in it.

  Although not shown, a motor for driving the left and right wind direction plates 752 is disposed on the back surface of the chamber 751a, and a motor for driving the upper and lower wind direction plates 754 is disposed beside the first air outlet 754.

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

  Both the rotation units 78L and 78R are driven by a motor. The motor for driving the rotating unit 78 is disposed in a motor cover 512 shown beside the outer ducts 51c and 51d in FIG.

  In this embodiment, each of the rotation units 78L and 78R can be rotated from the first position to a position of 90 ° or more, for example, 100 °, for example, as the second position. There is a possibility that a short circuit phenomenon occurs in which air is sucked into the air suction portion 73 without going to the air conditioning room R.

  In order to prevent this, referring to FIGS. 11 to 13, a wall 711 is provided between the rotary unit 78 and the air suction portion 73.

  In this embodiment, the wall 711 is a top surface of the rotation unit 78 with a part around the rotation unit 78 of the panel portion 71 facing the rotation units 78L and 78R and the air suction portion 73 from the short sides 70c and 70d side. It is formed in the shape of a slope that rises to the height of 781 or the height of the air suction portion 73. In FIG. 11 thru | or FIG. 13, it has shown that the ridgeline 711a of the wall 711 is slope shape.

  According to this, the short circuit phenomenon when the rotating unit 78 is rotated to the vicinity of the maximum rotation position by the wall 711 is prevented, and the blown air flow reaches farther along the slope surface 712 of the wall 711. It will be. That is, the wall 711 serves not only to prevent a short circuit phenomenon but also to serve as an airflow guide surface that allows the blown air to reach far away by providing the slope surface 712.

  According to this embodiment, 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 remaining panel surface including the slope surface 712 of the wall 711 acts as an air flow guide surface.

  As described above, the decorative panel 70 is attached to the main unit 10 by fitting the side wall 72 into the bottom opening of the main unit 10 and screwing. At the time of this assembly, as shown by an 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. Is done.

  In this air guide path L, the air toward the second air suction chamber S2 passes between the ducts 51 and 51, but 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 the above.

<Assembly>
Next, assembly of the indoor unit 1 will be described. In the main unit 10, first, the top plate 111 side of the outer body 11 is placed on an assembly table, and the heat insulating material 13 is fitted inside the outer body 11. Then, a gas connection pipe and a liquid connection pipe (both not shown) of the assembled heat exchanger 20 (a heat exchanger in which the front heat exchange part 20L and the rear heat exchange part 20R are connected by the connection plate 21) are pulled out from the side plate 113. As a state, the heat exchanger 20 is fixed to the top plate 111 via a predetermined fixture (not shown). Thereafter, the assembled fan unit 30 is arranged in the blower 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 flange portion 45 on the drain sheet 42 side of the drain pan 40 is fitted into the bottom surface of the outer body 11 so as to match the lower ends of the heat exchange portions 20L and 20R. At this time, the air blowing part 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 on the ceiling T2 by being suspended by a plurality of suspension bolts previously embedded in the ceiling 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 blower 343 of the fan casing 34. Although not shown, the indoor unit 1 can be operated by connecting the refrigerant pipe, the power supply line, and the signal line to the outdoor unit.

<Driving>
When the indoor unit 1 is stopped, as shown in FIG. 11, the rotation units 78L and 78R of the movable outlets 77L and 77R have the second air outlet 783 as the first air of the fixed outlet 75 as an initial position. It faces in the same direction as the air outlet 754 (long side 70a side) (first position), and the first air outlet 754 and the second air outlet 783 are both closed by vertical air direction plates 782 and 753.

  Then, the compressor and fan motor (not shown) of the outdoor unit and the fan motor 36 of the indoor unit 1 start operation in response to a user's command from a remote controller (not shown) or an air conditioning system command.

  In the indoor unit 1, the blower fan 31 is rotated by the operation of the fan motor 36. The rotation of the blower fan 31 causes the air in the blower section 34 of the blower fan 31 to be blown out, resulting in a negative pressure in the blower chamber F. From the air suction section 73 provided in the decorative panel 70, Air K is inhaled.

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

  The air thus harmonized is sent from the blower 343 of the fan casing 34 to the fixed blower 75 and the movable blower 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 outlet 75 is blown out from the first air outlet 754 in the direction guided by the left and right wind direction plates 752 and the upper and lower wind direction plates 753. In addition, the conditioned air sent to the movable blowing part 77 is blown out in the direction of rotation of the rotating unit 78 and the direction guided by the up-and-down air direction plate 782.

  Since the rotation units 78L and 78R can be controlled individually, the conditioned air is supplied in multiple directions excluding the direction of the long side 70b on the rear side where the air suction portion 73 is located, as required by the user. Can do.

<Suction grill>
Next, some forms of the suction grill 80 attached to the air suction part 73 will be described.

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

  A suction grill 80 having an air filter on the back side is attached to the air suction portion 73 so that at least one of opening and closing and attachment / detachment is possible. 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, on the side of the side panel 71b, a dummy bar 82 is formed on the extended line of the grill bar 81. However, with this state, the gap Da between the butted portions of the panel main body 71a and the side panel 71b is linearly divided. It appears as a line, and the appearance quality is degraded. In addition, a dummy crosspiece is a crosspiece which is closed between the crosspieces by a panel material and does not have a slit-like ventilation opening.

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

  According to this, when the decorative panel 70 installed on the ceiling surface is obliquely looked up from the position of the user in FIG. 1, a part of the gap Da is hidden by the grill bar 81, and the side panel 71b is in the gap Db. The black shadow of the gap Db becomes thin and the presence of the gap Da becomes difficult to understand, and the grill bar 81 and the dummy bar 82 appear to be connected to one to improve the appearance quality.

  Further, as a preferred mode, the gap Db between the abutting portions of the end 81e of the grill bar 81 and the end 82e of the dummy bar 82 is not parallel to the gap Da between the abutting portions of the panel body 71a and the side panel 71b. In contrast, the gaps Db are arranged at the same position in the vertical direction with the inclination angle θ, for example, the gaps Db are arranged in a straight line parallel to the dividing line by the gap Da. By arranging them along, the gap Db can be made inconspicuous.

  More preferably, as shown in FIG. 19, even if the width of the gap Db is increased by forming a rib 83 on the rear side of the gap Db from the end 82e of the dummy bar 82 to the gap Da. The gap Db can be made less noticeable.

  The rear of the gap Db is the rear of the gap Db when the decorative panel 70 installed on the ceiling surface is obliquely looked up from the position of the user in FIG. In FIGS. 18 and 19, black portions are ventilation openings of the suction grill 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, in the indoor unit 1 according to this embodiment, the main unit 10 includes the left front heat exchange unit 20L and the right rear heat exchange unit 20R as the heat exchanger 20 in FIG. The first air suction chamber S1 is provided on the rear heat exchange unit 20R side, and the second air suction chamber S2 is provided on the front heat exchange unit 20L side.

  On the other hand, since the air suction part 73 is arrange | positioned at the back side (long side 70b side) of the decorative panel 70, the air suck | inhaled from the air suction part 73 flows into 1st air suction chamber S1. The second air suction chamber S2 easily passes through the air guide path L, and thus receives a ventilation resistance.

  Thereby, in the opening range of the suction grill 80 attached to the air suction part 73, a part with much suction | inhalation amount and a part with few suction | inhalation can be performed from the relationship with arrangement | positioning of air suction chamber S1, S2 mentioned above. In FIG. 6, the suction side of the suction grill 80 (side closer to the air guide path L) has a relatively small suction amount, and the suction amount gradually increases toward the rear side (long side 70 b side).

  Therefore, when the grill bars 81 are evenly arranged in the opening of the suction grill 80, the opening area is equally divided, the opening area is insufficient in the portion where the suction amount is large, and the opening area is excessive in the portion where the suction amount is small. It feels so good.

  Therefore, in this embodiment, as shown in FIG. 20, when the plurality of grill bars 81 are provided parallel to each other along the long side 70 b of the decorative panel 70 as shown in FIG. In addition, the opening area is made small in the portion where the suction amount is small.

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

  As described above, 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 is large, the air is efficiently sucked into the opening area, so that the suction capacity is improved.

  However, if the interval between the grill bars 81 is suddenly changed, the arrangement of the grill bars 81 will appear to be loose and the appearance quality will deteriorate. The appearance can be similar to the interval.

  Next, with reference to FIGS. 21 to 24, some configurations of the switches operated when the suction grill 80 is opened and closed will be described. This switch is included in the grill surface together with the grill bar 81 and is not noticeable in appearance, but has a feature that it can be easily moved with a finger.

  First, referring to FIG. 20, the suction grill 80 includes a base frame 80 </ b> F that fits into the opening of the air suction portion 73. Although FIG. 20 is a cross-sectional view, as described above, since the opening of the air suction portion 73 is a quadrangle, the base frame 80F is also a quadrangle. In addition, as described above, a plurality of grill bars 81 are formed on the base frame 80F in parallel with each other along the extending direction of the long side 70b of the decorative panel 70 in this example.

  As shown in FIGS. 21A and 21B, in this embodiment, the suction grill 80 is opened and closed in a frame portion (opening and closing side frame portion) 80Fa close to the air blowing portion 74 in the base frame 80F. A switch 90 is provided which is sometimes operated.

  The switch 90 is slidable in a direction orthogonal to the grill bar 81, and is disposed, for example, at two or three locations. FIG. 21 (a) shows a bottom surface when one of them is viewed from the air conditioning room R.

  In addition, an apparent dummy bar 82f having no ventilation opening is formed in the opening / closing side frame part 80Fa so as to be uniform in appearance with the grill bar 81. Although not shown, the frame portion opposite to the open / close side frame portion 80Fa is connected to the edge of the air suction portion 73 by a hinge or the like.

  Referring to FIGS. 22A and 22B, the switch 90 includes a substrate portion 91 that is slidably held on a part of the opening / closing side frame portion 80Fa. As shown in FIG. 3, the air suction part 73 appears and disappears in the engagement hole 732 formed in the inner edge 731 of the air suction part 73.

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

  On the other hand, the finger-hanging piece 93 is directed obliquely with respect to the knob piece 92 (in the diagonally lower left direction in FIG. 22B) so that a gap FS for inserting the fingertip between the knob piece 92 is formed. It is formed as follows.

  The switch 90 is slidably held by the holding member 94 on the open / close side frame 80Fa of the switch 90. As shown in FIG. 22A, on the bottom surface side of the substrate portion 91, two leaf springs 94 made of a strip having a semicircular protruding curved portion 941 are arranged side by side in this example.

  On the other hand, a rib plate 801 is erected on the opening / closing side frame portion 80Fa so that the protruding curved portion 941 of the leaf spring 94 gets over as the switch 90 slides.

  According to this, when the protruding curved portion 941 gets over the rib plate 801, a predetermined click force is generated, and the switch 90 is in the locked position shown in FIG. 732) and the unlocked position (position where the tip end portion 911 of the substrate portion 91 comes out of the engagement hole 732) shown in FIG. 21C is selectively held.

  As the switch 90 is slidably attached to the open / close frame 80Fa, in this first example, the first grill bar 81a adjacent to the open / close frame 80Fa and the second grill bar 81b adjacent to the first grill bar 81b. Are cut out by a length corresponding to the width of the switch 90. In the present specification, this cut-out portion is referred to as a “missing frame portion” and is denoted by a symbol C.

  In order to supplement this missing crosspiece portion in appearance, it has the same shape as the first grille crosspiece 81a as a complementary dummy crosspiece 921 in the sense of complementing the lower end edge of the knob piece 92 in shape, The complementary dummy bar 931 having the same shape as the lower end edge is complemented by 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 frame part C of the first grill bar 81a, and the complementary dummy bar 931 of the finger hanging piece 93 is positioned at the missing frame part C of the second grill bar 81b.

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

  In addition, since a gap-shaped dividing line is visually observed between the missing frame portions of the grill bars 81a and 81b and the switch 90, when the decorative panel 70 is looked up from the air conditioning room R, the switch 90 is disposed where. Can be easily recognized.

  Further, since there is a gap FS for inserting the fingertip between the knob piece 92 and the finger-hanging piece 93, the fingertip is put into the gap FS and the switch 90 is easily moved to the unlock position shown in FIG. 21 (c). (The same applies when the switch 90 is returned to the lock position shown in FIG. 21B).

  In the unlocked position shown in FIG. 21 (c), the knob piece 92 is located in the notch portion of the second grill bar 81b, and the finger hook piece 93 abuts on 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 make it difficult for the fingertip to slide with respect to the finger-hanging piece 93, a rib 932 may be provided on the lower end edge side of the inner surface of the finger-hanging piece 93 as shown in FIG. Further, it is preferable to provide a rib 922 for making it difficult for the fingertip to slip on the knob piece 92. Instead of the ribs, for example, a plurality of hemispherical protrusions may be formed.

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

  In this case, as shown in the bottom view of FIG. 23A, portions of the dummy bar 82f and the first grill bar 81a of the opening / closing side frame 80Fa are cut out by a length corresponding to the width of the switch 90. It is assumed to be missing part C.

  In the locked position of the switch 90, the complementary dummy bar 921 at the lower end edge of the knob piece 92 is disposed in the missing bar portion C of the dummy bar 82f, and the complementary dummy bar 931 at the lower end edge of the finger hanging piece 93 is provided. The first grill bar 81a is disposed in the missing bar portion C. Others may be the same as the first example.

  According to this, as in the first example, at the time of locking, 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 hanging piece 93 is the first. 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, at the time of locking, in the first example, a part of the ventilation opening between the first and second grill bars 81a and 81b is blocked by the switch 90. In this case, the ventilation opening between the first grill bar 81 a and the second grill bar 81 b is not blocked by the switch 90.

  In the second example, when unlocked, as shown in FIG. 23 (c), the complementary dummy bar 921 formed at the lower edge of the knob piece 92 is a missing bar part of the first grill bar 81a. Located in C, the complementary dummy bar 931 of the finger hanging piece 93 comes into contact with the second grill bar 81b.

  Next, another embodiment of the switch will be described with reference to FIG. The switch 90 </ b> A according to this another embodiment includes only a knob piece 92. The specific frame portion 80Fa includes a guide surface 85 that moves the switch 90A in an oblique direction. The knob 92 is in the grill surface together with the grill bar 81 when locked, and its presence is not noticeable, but protrudes downward from the grill surface only when unlocked.

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

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

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

  The switch 90 </ b> A is between the lock position shown in FIG. 24A where the tip 91 a enters the engagement hole 732 and the unlock position shown in FIG. 24B where the tip 91 a comes out of the engagement hole 732. Slide on. In this example, the moving stroke of the switch 90A is defined by the distance between the frame portion 80Fa and the first grill bar 81a.

  The length of the knob 92 is such that, in the locked position shown in FIG. 24A, the lower edge 921 is at the same height as the grill surface GS including the lower edge 811 of each grill bar 81. In the unlock position shown in (b), the lower end edge 921 is set to a position lower than the grill surface GS, that is, a length protruding downward from the grill surface GS toward the air conditioning chamber R side. The protruding length from the grill surface GS is a length that allows the tip of the knob 92 to be easily picked by a finger.

  According to this, the knob 92 is in the grill surface GS including the lower end edge 811 of the grill bar 81 when locked, and its presence is not noticeable, but when the switch 90A is slid obliquely downward, it is unlocked. Only the protrusions 92 project downward from the grill surface GS, and the knob 92 is easily picked.

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

  In this case, the rib plate 801 side is flexible, and the convex portion 95 generates a click sound while bending the tip portion of the rib plate 801 as the switch 90A slides. As a result, the switch 90A is selectively held at the locked position shown in FIG. 24A and the unlocked position shown in FIG.

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 part, 20R: rear heat exchange part, 21: connecting plate,
30: Fan unit, 31: Blower fan, 32: Impeller, 33: Blower passage, 34: Fan casing, 343: Blower, 35: Rotating shaft, 36: Fan motor,
40: drain pan, 43: vent hole, 45: buttocks,
50: Partition unit, 51 (51a-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 suction part, 74: Air blowing part, 740: Raised part, 75; Fixed blowing part, 751: Central blowing unit, 754: First air blowing outlet, 77 (77L, 77R): Movable blowing part, 78 (78L, 78R): rotating unit, 783: second air outlet,
80: suction grille, 80F: base frame, 80Fa: open / close side frame part, 81 (81a, 81b ...): grill bar, 82 / 82f: dummy bar,
90: Switch, 91: Board part, 92: Pick piece, 93: Finger piece, 1: Connection part R: Air-conditioning room, T1: Ceiling, T2: Back of ceiling, F: Blower room, S1 / S2: Air suction room , L: Air guide path.

Claims (2)

A box-shaped main body unit installed on the back of the ceiling, and a decorative panel attached to the bottom surface of the main body unit along the ceiling surface, the decorative panel having an air suction portion and an air blowing portion, In the ceiling-embedded air conditioner in which the suction grille in which a plurality of grill bars are provided in parallel to each other at the opening of the air suction unit,
The ceiling-embedded air conditioner characterized in that the interval between the grill bars gradually increases from one side of the opening to the other side facing the opening.   The heat exchanger has a front first heat exchanging portion and a rear second heat exchanging portion which are arranged to face each other in the main body unit, and the blower has the first heat exchanging portion and the second heat exchanging portion. In the decorative panel, the air suction portion is disposed on the rear second heat exchange portion side, and between the decorative panel and the main body unit from the air suction portion to the front. An air guide path leading to the first heat exchange section is formed, one side of the opening is the air guide path side, and the gap between the grill bars is from one side of the opening in the air guide path 2. The ceiling-embedded air conditioner according to claim 1, wherein the air conditioner gradually increases toward the other side opposite thereto.

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