JP4817904B2 - Ceiling cassette type air conditioner - Google Patents

Description

  The present invention relates to a ceiling cassette type air conditioner arranged on a ceiling.

In general, a ceiling cassette type air conditioner installed on a ceiling is known. In recent years, in this type of ceiling cassette type air conditioner, the capacity of the unit has been increasing. However, if a large-capacity unit is newly developed, new parts such as a heat exchanger and a fan are required, which leads to a long development period and complicated parts management when producing various types of units. There is.
For this reason, the applicant has proposed a ceiling cassette type air conditioner in which a large capacity of the unit is achieved with a simple configuration by connecting a plurality of existing ceiling-suspended indoor units having a small capacity (for example, Patent Document 1).
JP-A-11-141968

  However, in the conventional configuration, a plurality of indoor units are connected by a connecting member, and the plurality of indoor units are housed in an outer plate, so that the external dimensions of the ceiling cassette type air conditioner are Since it becomes large, handling becomes difficult, and in particular, there is a problem that transportation becomes difficult.

  Therefore, an object of the present invention is to provide a ceiling cassette type air conditioner that solves the above-described problems of the prior art and that can be reduced in size and size with a simple configuration. .

  In order to solve the above-mentioned problems, the present invention arranges a plurality of ceiling-suspended indoor units having first suspension brackets at four corners side by side, and four first suspension brackets positioned at the outer four corners in this arrangement state. The second suspension fittings are fixed to each other, and the second suspension fittings are connected to each other by four connecting members extending vertically and horizontally, and the first hanging fittings positioned on the inside and connected to each other are connected by a connecting piece. The connecting piece is fixed to the connecting member.

In this case Te smell, may be configured to pre-Symbol connecting member is provided with a temporary fixing can claw portion hooked to the connecting piece.

  According to the present invention, a plurality of ceiling-suspended indoor units having first suspension brackets at four corners are arranged side by side, and each of the four first suspension brackets positioned at the outer four corners in this arrangement state is second suspended. The bracket is fixed, and the second suspension brackets are coupled to each other by four coupling members extending vertically and horizontally, and the first suspension brackets positioned on the inner side are coupled to each other by a coupling piece. By fixing to the material, it is possible to reduce the size and size of the unit with a simple configuration.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view showing a ceiling cassette type air conditioner according to the present embodiment. In FIG. 1, reference numeral 1 denotes a ceiling cassette type air conditioner 1 having a large capacity (for example, 10 horsepower). This ceiling cassette type air conditioner 1 has two unit components 5 (5 horsepowers in this configuration), which can operate independently as a ceiling-suspended indoor unit, arranged side by side. Are connected.

A decorative panel 71 is attached to the lower surface of each unit component 5. The decorative panel 71 is the same as that attached when the unit component 5 is used alone, and a suction port 73 is formed at a position corresponding to the suction port of the unit component 5. The suction grill 76 on which the air filter is placed on the upper surface is detachably attached. Further, an air outlet 75 is formed around the inlet 73 at a position corresponding to the air outlet of the unit structure 5 along the four sides of the decorative panel 71.
In the present embodiment, center panels 72 and 72 for connecting the decorative panels 71 and 71 are attached to the connecting portions of the decorative panels 71 and 71 arranged side by side. Of 75, the air outlet (not shown) located at the center is closed so that conditioned air is not blown into the indoor space.
Moreover, the ceiling cassette type air conditioner 1 is a pipe that accommodates the refrigerant pipe (liquid pipe 81, gas pipe 83) and the drain pipe 87 led out from the unit structural body 5 between the unit structural bodies 5 and 5. A storage unit 90 is provided. In addition, in this piping storage part 90, control wiring and power supply wiring (both not shown) connected to each unit structural body 5 and 5 are stored.

  As shown in FIG. 2, each unit component 5 includes a casing 11. In the casing 11, a blower including a fan motor (not shown) and a turbo fan 26, and a substantially rectangular shape surrounding the blower. A heat exchanger 38 formed by bending into an electric box and an electrical box 36 (see FIG. 3) are accommodated. In the heat exchanger 38, the tube plates 49 are separated from each other by the partition plate 28, and the drain pump 30 is accommodated in a space 56 outside the heat exchanger 38 partitioned by the partition plate 28. A drain pan (not shown) is disposed on the lower surface of the heat exchanger 38 and drain water dripped from the heat exchanger 38 is stored. The drain water collected in the drain pan is discharged from the drain outlet 32 formed on the one side surface 11 </ b> A of the casing 11 by driving the drain pump 30. Further, a liquid pipe connection port 34 and a gas pipe connection port 35 connected to the heat exchanger 38 are formed on one side surface 11A of the casing 11.

  Suspension fittings (first suspension fittings) 44 are secured to the four corners of the casing 11 of each unit component 5. When the unit structure 5 is used alone as a ceiling-suspended indoor unit, the hanging metal fitting 44 is hooked on a suspension bolt (not shown) from the ceiling to install the unit structure 5 on the ceiling. Used for.

FIG. 3 is an exploded perspective view showing the pipe storage unit 90. FIG. 3 is also a diagram showing an assembly (connection) procedure of the ceiling cassette type air conditioner 1. When the ceiling cassette type air conditioner 1 is assembled in a factory or the like, the ceiling cassette type air conditioner 1 is assembled. It is performed with the air outlet and the suction port facing upward, with the top and bottom facing away from when the air is suspended. For this reason, FIG. 3 shows a state in which the top and bottom of FIG. 1 are reversed.
When connecting the two unit structural bodies 5 and 5, each unit structural body 5 and 5 is one side of the casing 11 in which the drain drain port 32, the liquid pipe connection port 34, and the gas pipe connection port 35 are formed. 11A are arranged to face each other. As shown in FIG. 3, a pipe storage unit 90 is formed between the unit structural bodies 5 and 5. The pipe storage unit 90 includes a flat ceiling plate member (ceiling side member) 50, A pipe support base (positioning member) 51 attached to the ceiling plate member 50 is disposed, and a liquid pipe 81 and a gas pipe 83 are supported on the pipe support base 51.
The ceiling board member 50 is formed in a bent portion 50A formed by bending both edge portions thereof, and in the vicinity of the bent portion 50A, and is screwed to each opposing surface (that is, one side surface of the casing 11) 11A of each unit component 5. The connecting plate 50B is fixed at the center of the ceiling plate member 50, and a locking portion 50C for screwing the pipe support base 51 is provided.
The distance L1 between the bent portions 50A and 50A is set to be approximately the same as the distance W of one side of the unit structural body 5, and these bent portions 50A are connected to the unit structural bodies 5 and 5 when they are connected. The displacement in the width direction (X direction in the figure) of the structural bodies 5 and 5 is restricted, and positioning in the width direction can be performed easily and accurately. In this configuration, each bent portion 50 </ b> A functions as a second restricting portion that restricts the displacement of the unit structure 5 in the width direction. The connecting plate 50B is formed by cutting and raising a part of the ceiling plate member 50.

  The pipe support 51 includes a side plate 51A formed by bending both ends of a substrate, and two pipe support portions 51B and 51C having different heights are formed on the side plate 51A. The width L2 of the pipe support base 51 is set to an optimum inter-unit distance when connecting the unit structural bodies 5 and 5, and the pipe support base 51 is contacted with one side surface 11A of the casing 11 of the unit structural body 5. By making contact, positioning of the unit constituent bodies 5 and 5 in the length direction (Y direction in the figure) can be performed easily and accurately.

A gas pipe 83 is supported by a pipe support part 51 </ b> B formed at a low position of the pipe support base 51. This gas pipe 83 is branched into two by cheese 83A, and a flare nut 83B is formed at the end thereof. These flare nuts 83 </ b> B are connected to the gas pipe connection port 35 of each unit component 5. Further, the liquid pipe 81 is supported by the pipe support part 51 </ b> C formed at a high position of the pipe support base 51. The liquid pipe 81 is branched into two by cheese 81A, and a flare nut 81B is formed at the end thereof. These flare nuts 81 </ b> B are connected to the liquid pipe connection port 34 of each unit component 5.
In this configuration, the gas pipe 83 is arranged at the approximate center in the height direction of the pipe housing portion 90, and the liquid pipe 81 is arranged above the gas pipe 83 (downward when suspended). According to this, when the refrigerant pipes 81 and 83 are connected to the inter-unit pipes by welding, the liquid pipe 81 with a narrow pipe diameter is positioned on the near side, and therefore, all the gas pipes 83 are hidden by the liquid pipe 81. And the welding operation can be easily performed. Further, even when the gas pipe 83 having a large pipe diameter is welded, the gas pipe 83 is disposed at the approximate center of the pipe housing portion, so that a large work space can be secured during welding. Work can be performed more easily.
A drain pipe 87 is connected to each drain discharge port 32 so that drain water can be discharged to the outside. In this configuration, the drain pipe 87 is led from both the front and rear of the pipe housing part 90, but the front or rear through the circular opening 51 </ b> D formed in the side plate 51 </ b> A of the pipe support base 51. It is good also as a structure derived from any one of these.

Next, the connection structure of the unit structural bodies 5 and 5 will be described.
The unit structural bodies 5 and 5 are connected by using suspension metal fittings (first suspension metal fittings) 44 provided at the four corners of the unit structural body 5. As shown in FIG. 4, a connecting piece 55 is arranged on the hanging metal piece 44 </ b> A in the position facing each other in a state where the unit structural bodies 5, 5 are arranged side by side. And the suspension fitting 44A are connected via bolts and nuts. In this configuration, by connecting the connecting piece 55 and the suspension bracket 44A, the displacement between the unit structural bodies 5 and 5 is prevented, and the positioning of the unit structural bodies 5 and 5 is completed.
The connecting piece 55 is an L-shaped angle member provided with a bottom plate 55A and a side plate 55B. As shown in FIGS. 4 and 5, the bottom surface 55A of the connecting piece 55 has a claw portion 45A of the hanging bracket 44A. Are inserted, and a hole 57 for connecting to the suspension fitting 44A via a bolt and a nut is formed. On the other hand, the side plate 55B of the connecting piece 55 has a recess 58 for temporarily fixing a first connecting member 61, which will be described later, to the connecting piece 55, and the first connecting member 61 to the connecting piece 55 via bolts and nuts. And a hole 59 for fixing.

  On the other hand, as shown in FIG. 6, flange members (second suspension brackets) 60 are fixed to the four suspension brackets 44B located at the outer four corners of the unit structural bodies 5 and 5, respectively. Are connected by a first connecting member 61 and a second connecting member 62 extending vertically and horizontally to form a frame 63, and the frame 63 surrounds the periphery of the unit components 5 and 5. In this configuration, the flange member 60 is disposed so as to fit within the four corners of the frame 63 framed by the first connecting member 61 and the second connecting member 62. For this reason, when each unit structure 5 and 5 is connected, the frame 63 does not protrude outward greatly, and the external dimensions of the ceiling cassette type air conditioner 1 can be reduced.

  As shown in FIG. 7, the flange member 60 includes a substantially triangular base portion 60A. In the base portion 60A, the groove 64 into which the claw portion 45B of the suspension fitting 44B is inserted, and the flange member 60 are suspended. A hole 65 (FIG. 6) for connecting to the metal fitting 44B via a bolt 101 and a nut (not shown) is formed. Further, a suspension hole 66 for suspending the ceiling cassette type air conditioner 1 from the ceiling is formed in the vicinity of the groove 64 in the base 60A. Since the suspension hole portion 66 is provided in the vicinity of the suspension fitting 44 </ b> B, as shown in FIG. 1, when the corner panel (not shown) of the decorative panel 71 is removed, the suspension hole portion of the flange member 60 is opened through the opening 74. 66 want. Accordingly, the ceiling cassette type air conditioner 1 can be easily suspended as in the case where the unit component 5 is suspended alone.

  Further, as shown in FIG. 7, the base portion 60 </ b> A of the flange member 60 is formed by bending a part of the base portion 60 </ b> A to form a first connection portion 67. The first connection portion 67 includes bolts 101 and Holes for fixing to the connecting members 61 and 62 through the nut 102 are provided. The base portion 60A is formed with a second connecting portion 68 that extends upward from one end thereof and has its upper end portion bent substantially parallel to the base portion 60A. At both ends of the second connecting portion 68, holes for fixing to the connecting members 61 and 62 are provided through bolts 101 and nuts 102, respectively.

  The second connecting member 62 extending in the short direction of the unit structural bodies 5 and 5 is an L-shaped angle member having an upper plate 62A and a side plate 62B, and the flange member 60 is provided at both ends of the upper plate 62A. A connecting hole is formed at a position corresponding to the hole formed in the second connecting portion 68. Further, a part of both ends of the side plate 62B is bent outward, and a connecting hole is formed at a position corresponding to the hole formed in the first connecting portion 67 of the flange member 60.

The first connecting member 61 extending in the longitudinal direction of the unit structural bodies 5 and 5 is an L-shaped angle member having an upper plate 61A and a side plate 61B, and the flange member is disposed at both ends of the upper plate 61A. A connecting hole is formed at a position corresponding to the hole formed in the first connecting portion 68 of 60. Further, a part of both ends of the side plate 61B is bent outward, and a connecting hole is formed at a position corresponding to the hole formed in the first connecting portion 67 of the flange member 60.
At the approximate center of the side plate 61B of the first connecting member 61, as shown in FIG. 6, there is a claw portion 69 that can be hooked on a recess 58 formed on the upper edge of the side plate 55B of the connecting piece 55 and temporarily fixed. A connection hole 70 is formed outside the claw portion 69 at a position corresponding to the hole 59 of the connection piece 55. In this configuration, when attaching the first connecting member 61, the first connecting member 61 can be easily positioned by hooking the claw portion 69 of the first connecting member 61 to the recess 58 of the connecting piece 55, Since the hand can be released from the first connecting member 61, the first connecting member 61 can be fixed to the connecting piece 55 by one person.
Moreover, in this structure, the connection piece 55 and the flange member 60 are fixed in contact with the upper surface of the hanging metal fitting 44 of each unit structure 5, as shown in FIG. That is, when the ceiling cassette type air conditioner 1 is suspended, each unit component 5 is placed on the frame body 63 (including the connecting piece 55) via the suspension fitting 44. Become. Therefore, even if the bolts and nuts that connect the hanging bracket 44, the connecting piece 55, and the flange member 60 are removed, the unit structural body 5 does not fall into the room.

After the unit structural bodies 5 and 5 are connected, side plates 92 and 92 each having a pipe outlet 91 are disposed on the side surface of the pipe housing portion 90 as shown in FIG. A maintenance cover 93 that covers the pipe storage unit 90 is disposed on the upper surface of the pipe storage unit 90 (the lower surface when suspended). The maintenance cover 93 is opened mainly during maintenance of the refrigerant pipe and the drain pipe, and is usually screwed to the upper plate 61A of the first connecting member 61. Arm portions 93A extending along the short direction of the maintenance cover 93 are formed at both ends of the maintenance cover 93, and the arm portions 93A are engaged with the claw portions 69 formed in the first connecting member. A mating slit 94 is provided. The slit 94 is for temporarily fixing the maintenance cover 93 to the first connecting member 61. By sliding the maintenance cover 93 in the lateral direction, the engagement between the slit 94 and the claw portion 69 is released. can do.
According to this configuration, since the maintenance cover 93 can be temporarily fixed to the first connecting member 61 by engaging the slit 94 with the claw portion 69, the maintenance cover is suspended in a state where the ceiling cassette type air conditioner 1 is suspended. Even when the fixing screw 93 is removed, the maintenance cover is prevented from dropping, and the maintenance work of the pipe housing portion 90 can be facilitated.

  In this configuration, the assembling work of the unit components 5 and 5 in a factory or the like is performed until the side plate 92 and the maintenance cover 93 are attached to the pipe storage unit 90, and shipped in this state. At the site, the connected unit components 5 and 5 are suspended, and the decorative panels 71 and 71 are attached to the lower surfaces of the unit components 5 and 5, and the center panels 72 and 72 are connected to the connecting portions of the decorative panels 71 and 71. Attach to finish.

  According to the present embodiment, a plurality of unit structural bodies 5 and 5 having suspension metal fittings 44A and 44B provided at four corners are arranged side by side, and in this arrangement state, the four suspension metal fittings 44B located at the four outer corners are respectively flanged. The member 60 is fixed, and the flange members 60 are connected to each other by first and second connecting members 61 and 62 extending vertically and horizontally, and the suspension metal fittings 44A that are located on the inside are connected to each other by a connecting piece 55. Since the connecting piece 55 is fixed to the first connecting member 61, the capacity of the ceiling cassette type air conditioner 1 can be increased with a simple configuration, and the ceiling cassette type air conditioner 1 can be reduced in size. Can do.

  In addition, according to the present embodiment, the flange member 60 is disposed so as to fit within the four corners of the frame 63 that is framed by the first connecting member 61 and the second connecting member 62, so that each unit component When the frames 5 and 5 are connected, the frame 63 does not largely protrude outward, and the external dimensions of the ceiling cassette type air conditioner 1 can be reduced.

  Further, according to the present embodiment, the first connecting member 61 includes the claw portion 6 that can be hooked to the connecting piece 55 and temporarily fixed. The first connecting member 61 can be released, and the first connecting member 61 can be fixed to the connecting piece 55 by one person. Further, the connecting piece 55 is formed with a recess 58 on which the claw portion 69 is hooked. Therefore, the positioning of the first connecting member 61 can be simplified by hooking the claw portion 69 on the recess 58. it can.

  Although the present embodiment has been described above, the present invention is not limited to this, and various modifications can be made. For example, in the above embodiment, a four-way blowing type ceiling cassette type air conditioner has been described. However, the present invention is not limited to other types of air conditioners, such as a two-way blowing type ceiling cassette type air conditioner. It can also be applied to.

It is a perspective view which shows one Embodiment of this invention. It is a top view of a unit structure. It is a disassembled perspective view which shows a piping accommodating part. It is the perspective view which showed the state which attaches a connection piece to each unit structure. It is a top view for demonstrating the combined state of a hanging metal fitting and a connection piece. It is a perspective view which shows the upper body which attaches a flange member, a 1st connection material, and a 2nd connection material to each unit structure. It is a perspective view for demonstrating the combined state of a hanging metal fitting, a flange member, a 1st connection material, and a 2nd connection material. It is a perspective view which shows the cover arrange | positioned at a piping accommodating part.

Explanation of symbols

1 Ceiling cassette air conditioner 5 Unit structure (Ceiling-suspended indoor unit)
44A, 44B Hanging bracket (first hanging bracket)
55 Connecting piece 58 Recessed portion 60 Flange member (second hanging bracket)
61 1st connection material (connection material)
62 Second connecting material (connecting material)
63 Frame 69 Claw 90 Pipe storage

Claims (2)

  A plurality of ceiling-suspended indoor units provided with four first hanging brackets are arranged side by side, and in this arrangement, the second hanging brackets are fixed to the four first hanging brackets located at the four outer corners. The second suspension fittings are connected to each other by four connecting members extending vertically and horizontally, and the first suspension fittings that are located on the inside and are opposed to each other are connected by a connecting piece, and the connecting piece is fixed to the connecting member. Characteristic ceiling cassette type air conditioner. The ceiling cassette type air conditioner according to claim 1, wherein the connecting member includes a claw portion that can be hooked onto the connecting piece and temporarily fixed.

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