JP6488886B2 - Duct type air conditioner - Google Patents

Description

  The present invention relates to a duct type air conditioner, and more particularly to an assembly structure of a heat exchanger.

  There is a duct type air conditioner as one of the air conditioners (see, for example, Patent Document 1). As shown in FIG. 1, the duct type air conditioner includes an outdoor unit (not shown) installed outdoors and an indoor unit 1 </ b> A, and is installed between the indoor ceiling surface 14 and the building ceiling surface 11. The heat exchanger 50 and the blower fan 40 are accommodated in the housing 10 of 1A. This heat exchanger 50 is configured by combining a rectangular first heat exchanger 51 arranged to be inclined downward and a rectangular second heat exchanger 52 arranged to be inclined upward. Yes. The first heat exchanger 51 and the second heat exchanger 52 are fixed to resin-made fixing members provided at the left and right ends from which a heat transfer tube (not shown) is drawn, and in a side view visually recognized in FIG. It is formed in a “sideways V-shape”. By forming the heat exchanger 50 in a “laterally V-shaped”, for example, the height of the heat exchanger can be made lower than when the heat exchanger is placed vertically, and the flat plate heat exchanger is inclined. The depth of the heat exchanger can be made narrower than when it is placed on. Thereby, the height H and depth D of the housing | casing 10 can be suppressed, and the housing | casing 10 can be reduced in size.

  Next to the heat exchanger, there is a piping chamber (not shown) provided with piping, a piping connection portion, and a pump unit. This piping chamber is covered from the side to the front by a blow-out side panel, and the blow-out side panel is a fixing member. It is fixed to.

International Publication Number WO2012 / 176805

  In the conventional duct type air conditioner, the fixing members at the left and right ends of the heat exchanger are made of resin, and the fixing members are fixed to the top plate and the front plate of the case with screws, so that the heat exchanger is attached to the case. Can be fixed inside. However, in order to fix the fixing member to the top plate with a screw, it is necessary to insert a screwdriver through the gap between the fixing member and the heat exchange, so that workability is poor, and a space for inserting the screwdriver is required inside, so that a housing is required. There is a risk that the body becomes large.

  In addition, part of the wind blown out from the blower fan may enter the piping chamber, and noise may be generated when this wind is about to flow out from the gap between the joint portion of the blowout side panel and the fixing member. is there.

  Moreover, a duct type air conditioner may connect several ventilation fans, and a heat exchanger also becomes long according to the number of ventilation fans. The left and right ends of the heat exchanger are supported by fixing members, but if the heat exchanger is long, the vicinity of the center may drop downward and be distorted. And since the air which is not heat-exchanged passes through the clearance produced by deformation | transformation, there exists a possibility that the heat exchange efficiency may fall and dew condensation may occur.

  Therefore, the present invention improves the mounting workability of the heat exchanger, prevents deformation of the heat exchanger, and reduces the size of the casing in the duct type air conditioner equipped with the horizontal V-shaped heat exchanger. The structure which can do is provided.

In order to solve the above-described problems, the present invention comprises a rectangular parallelepiped housing that is surrounded by a top plate, a bottom plate, a left side plate, and a right side plate, has an air outlet on the front surface, and has an air inlet on the rear surface, Duct-type air in which the inside of the housing is partitioned into a heat exchanger chamber on the air outlet side that houses the heat exchanger unit by a partition plate and a blower chamber on the air inlet side that houses the blower fan unit In the conditioner, the heat exchanger unit includes a first heat exchanger and a second heat exchanger that are formed in a lateral V-shape in a side view, respectively, Two side plates for fixing the heat exchanger to the partition plate, and two heat exchange mounting plates for fixing the two side plates to the left side plate or the right side plate, The side plate has a mounting piece on the side close to the partition plate. The partition plate includes a support portion for receiving and fixing the attachment piece, and the first heat exchanger and the second heat exchanger between the first heat exchanger and the partition plate side of the first heat exchanger. An arm for supporting the second heat exchanger is provided, and the arm is fixed to the support portion.

  Further, the heat exchanger mounting plate has a heat exchanger mounting portion for fixing the side plate and a front surface portion that is bent at a right angle from the heat exchanger mounting portion and fixed to the housing, and one of the two heat exchanger mounting members. The front portion of the plate is fixed to the left side plate with screws, and the front portion of the other heat exchanger mounting plate is formed to be longer than one of the front portions, and a part of the front surface of the housing is formed. Covering and fixing with the right side plate with screws is also included.

  The duct-type air conditioner equipped with the horizontally-oriented V-shaped heat exchanger configured as described above can improve the workability of mounting the heat exchanger and reduce the size of the casing. In addition, it is possible to prevent deformation of the heat exchanger.

It is a schematic diagram which shows the structure of the duct type air conditioner by this invention. It is sectional drawing of the indoor unit by this invention. It is a perspective view of the indoor unit according to the present invention. It is the figure which attached the air blower unit by this invention to the top plate. It is sectional drawing of the heat exchanger chamber by this invention. It is a perspective view of the heat exchanger unit by this invention. It is an exploded view of the heat exchanger unit by this invention. It is the figure which attached the heat exchanger unit by this invention to the top plate.

  DESCRIPTION OF EMBODIMENTS Hereinafter, modes for carrying out the present invention will be described in detail as examples based on the accompanying drawings, but the present invention is not limited to these.

  A duct type air conditioner 1 (hereinafter referred to as an air conditioner 1) according to the present invention includes an outdoor unit (not shown) installed outdoors and an indoor unit shown in FIG. The mounting bracket 13 attached to the housing 10 of the indoor unit 1A is fixed to a suspension bolt 12 suspended from the building ceiling surface 11 and suspended. Moreover, you may install in the indoor ceiling surface 14 instead of hanging. The housing | casing 10 is formed in a rectangular parallelepiped with a steel plate material.

  In addition, it has the air blower outlet 18 here on the left side surface of the housing | casing 10 in FIG. 1 as a front surface, and has the air suction port 15 here on the right side surface as a rear surface facing the front surface. The surface on the 11 side is the top surface, and the surface on the indoor ceiling surface 14 side is the bottom surface. 1 will be described as a right side surface and a surface facing the right side surface as a left side surface. The internal parts will be described in the same manner.

  It should be noted that the present invention relates to the assembly of the heat exchanger unit 50 to the housing 10 and in order to reverse the top and bottom of the housing 10 during assembly, FIG. 3 to FIG. And left and right are shown inverted.

  FIG. 2 is a sectional view of the indoor unit 1A in the installed state, and FIG. 3 is a perspective view of the indoor unit 1A during assembly. The outer casing of the housing 10 of the indoor unit 1A is assembled with the top plate 27 on the top as the bottom. Electrical component box cover including a top plate 27, a left side plate 22 on the left side fixed to the top plate 27, a right side plate 23 on the right side, a column 21 connecting the left side plate 22 and the right side plate 23, and the right side plate 23 (Not shown), an electrical component box 29 attached to the right and rear corners, a blower chamber bottom plate attached to a partition plate 28, an electrical component box 29 and a left side plate 22 described later and covering a blower chamber FC described later on the bottom surface 25, a partition plate 28, a left side plate 22, a right side plate 23, and a heat exchanger chamber bottom plate 26 attached to the support column 21 and covering a heat exchanger chamber HC (described later) on the bottom surface.

  On the front side, an opening surrounded by the top plate 27, the column 21, the left side plate 22 and the right side plate 23 serves as an air outlet 18, and a flange 18 a is provided around the air outlet 18. On the rear side, an opening surrounded by the top plate 27, the blower chamber bottom plate 25, the left side plate 22, and the electrical component box 29 becomes the air suction port 15.

  One end of the suction duct 16 is connected to the air suction port 15 shown in FIG. 1, and the other end of the suction duct 16 is connected to a suction grill 17 provided on the indoor ceiling surface 14. In addition, one end of a blowout duct 19 is connected to the flange 18 a of the air blowout outlet 18, and the other end of the blowout duct 19 is connected to a blowout grill 20 provided on the indoor ceiling surface 14. The air in the air-conditioned room K sucked from the suction grill 17 by the blower fan 40 described later flows into the air conditioner 1 through the suction duct 16 and is heat-exchanged with the refrigerant by passing through the heat exchanger 50 described later. The air subjected to the heat exchange is sent as cold air or hot air from the blow grill 20 through the blow duct 19 and the blow chamber device 191 and is sent out again into the air-conditioned room K.

  The inside of the housing 10 is partitioned into a blower chamber FC on the air inlet 15 side and a heat exchanger chamber HC on the air outlet 18 side by a partition plate 28 fixed to the top plate 27.

  As shown in FIG. 4, the blower fan unit 4 is disposed in the blower chamber FC. The blower fan unit 4 includes a partition plate 28, a fan motor 44, and a sirocco fan type blower fan 40. The blower fan 40 includes a fan main body 41 having a plurality of blades, a fan cover 43 that surrounds the fan main body 41 and forms a blower passage 42, and a rotating shaft 41 a provided in the fan main body 41. One or a plurality of blower fans 40 (four in FIG. 4) are arranged, and each rotation shaft 41a is connected to the fan motor 44 or the rotation shaft 41a. The partition plate 28 is provided with an opening corresponding to the fan cover 43, and the air blown from the fan main body 41 is blown into the heat exchanger chamber HC by fitting the fan cover 43 into the opening.

  In the blower fan unit 4, a fan motor 44 is attached to the partition plate 28, a blower fan 40 connected side by side with the fan motor 44 is attached in parallel to the partition plate 28, and a rotating shaft 41 a at the end is provided on the partition plate 28. It is configured by being attached to the attachment plate 46. After attaching the blower fan unit 4, the partition plate 28 is erected on the top plate 27 and fixed with screws 9.

  As shown in FIG. 2, the heat exchanger chamber HC includes a heat exchanger unit 5, a drain pan 30 disposed on the side of the heat exchanger chamber bottom plate 26 and receiving drain water generated from the heat exchanger 50, although not shown. A piping chamber PC (see FIG. 8) provided with piping, a piping connection portion, and a pump unit, and a heat insulating material 31 fixed to the heat exchanger chamber HC side of the top plate 27 are arranged.

  As shown in FIG. 6, the heat exchanger unit 5 includes a heat exchanger 50, a side plate 6, a heat exchanger mounting plate 7, and an arm 56. The heat exchanger 50 is formed by combining the first heat exchanger 51 and the second heat exchanger 52. With reference to FIG. 2, the first heat exchanger 51 is located on the lower side in the installed state, and the second heat exchanger 52 is located on the upper side. In both the first heat exchanger 51 and the second heat exchanger 52, aluminum fins 53 each having a tapered portion 53a with one end of a strip shape cut at about 45 degrees are arranged in parallel to the width of the blower fan 40. This is a fin-tube type heat exchanger that includes a plurality of heat transfer tubes 54 that are arranged and arranged to be orthogonal to the aluminum fins 53.

  By overlapping the tapered portion 53a of the second heat exchanger 52 on the front side of the first heat exchanger 51, the heat exchanger 50 is combined in a lateral V shape. By making the heat exchanger 50 sideways V-shaped, the air blown from the blower fan 40 spreads evenly over the entire heat exchanger 50 and the height H and depth D of the housing 10 can be suppressed. In addition, the housing 10 can be reduced in size, and the steel plate material of the housing 10 can be reduced.

  As shown in FIGS. 5 to 7, side plates 6 are provided on the left and right ends of the heat exchanger 50. The side plate 6 includes a first left side plate 61 and a first right side plate 62 provided in the first heat exchanger 51, and a second left side plate 63 and a second right side plate 64 provided in the second heat exchanger 52. The first left side plate 61 and the first right side plate 62 and the second left side plate 63 and the second right side plate 64 are formed symmetrically with each other. The side plate 6 is penetrated by a heat transfer tube 54, and the penetrated heat transfer tube 54 is connected to each other by a U-shaped tube 55 at the end of the side plate 6.

  The first left side plate 61 and the second left side plate 63 on the left side of the heat exchanger 50, and the first right side plate 62 and the second right side plate 64 on the right side of the heat exchanger 50 are fitted together in the fitting portion 6a. The horizontal V-shape of the heat exchanger 50 that combines the first heat exchanger 51 and the second heat exchanger 52 is maintained.

  Further, a side plate support 65 is provided between the first right side plate 62 and the second right side plate 64 so that the blown air does not flow into the piping chamber PC and serves also as a laterally V-shaped reinforcement.

  The first left side plate 61 and the first right side plate 62 are respectively provided with attachment pieces 611 and 621 which are bent horizontally toward the opposite side of the heat exchanger 50 at the end on the partition plate 28 side. The attachment pieces 611 and 621 have screw holes 611a and 621a, respectively.

  When three or more blower fans 40 are connected and the heat exchanger 50 becomes long, the first heat exchanger 51 and the second heat exchanger 51 are further interposed between the first heat exchanger 51 and the second heat exchanger 52. An arm 56 that supports the heat exchanger 52 is provided. Both ends of the arm 56 are bent according to the angle of the first heat exchanger 51 and the second heat exchanger 52, one end is engaged with the second heat exchanger 52, and the other end is the first. It is a sheet metal material formed so as to support the heat exchanger 51. The arm 56 includes a screw hole 561 with an end on the first heat exchanger 51 side extending toward the partition plate 28. By providing the arm 56, it is possible to prevent the heat exchanger 50 from being deformed. The arm 56 may be provided at the center in the longitudinal direction of the heat exchanger 50.

  The heat exchanger 50 is fixed to the left side plate 22 or the right side plate 23 by the heat exchanger mounting plate 7. The heat exchanger mounting plate 7 includes a heat exchanger left mounting plate 71 attached to the left side of the heat exchanger 50 and a heat exchanger right mounting plate 72 attached to the right side of the heat exchanger 50. The left heat exchanger mounting plate 71 and the right heat exchanger mounting plate 72 are heat exchanger mounting portions 711 and 721 that are fixed to the side plate 6, respectively, and the front surface portion that is bent at a right angle from the heat exchanger mounting portions 711 and 721 and fixed to the housing 10. 712, 722.

  The heat exchange attachment portions 711 and 721 are cut out in a wedge shape so as not to be buffered by the U-shaped tube 55 of the heat exchanger 50, and the upper side and the lower side are in contact with the heat insulating material 31 and the drain pan 30 as shown in FIG. Formed into a shape.

  The locking claw 612 of the first left side plate 61 is locked in the locking hole 711a of the heat exchanger mounting portion 711, and the locking claw 632 of the second left side plate 63 is locked in the locking hole 711b of the heat exchanger mounting portion 711. Then, the screw 9 is screwed. Similarly, the locking claw 622 of the first right side plate 62 is locked in the locking hole 721a of the heat exchanger mounting portion 721, and the locking claw (illustrated) of the second right side plate 64 is locked in the locking hole 721b of the heat exchanger mounting portion 721. (None) is locked and the screw 9 is screwed.

  The front portion 722 of the heat exchanger right mounting plate 72 is bent at a right angle from the heat exchanger mounting portion 721 and formed to be longer than the front portion 712 of the heat exchanger left mounting plate 71 and extends to the left side plate 22. The front portion 722 closes the piping chamber PC after assembly.

  Referring to FIG. 4, the partition plate 28 attached to the top plate 27 is provided with a support portion 33 that extends toward the heat exchanger chamber HC and is aligned with the positions of the attachment pieces 611 and 621 and the arm 56. ing. The support portion 33 has a screw hole 611 a of the attachment piece 611, a screw hole 33 a aligned with the screw hole 621 a of the attachment piece 621 and the screw hole 561 of the arm 56.

  Assembling the heat exchanger unit 5 to the housing 10 first places the heat exchanger unit 5 on the top plate 27 to which the blower fan unit 4 and the heat insulating material 31 shown in FIG. 4 are attached. At this time, as shown in FIG. 8, the heat exchanger mounting portions 711 and 721 of the heat exchanger mounting plate 7 are combined with the heat insulating material 31, and the lower ends of the front surface portions 712 and 722 are in the gap between the flange 27 a of the top plate 27 and the heat insulating material 31. You can align by matching.

  In this state, the attachment pieces 611 and 621 and the arm 56 of the first left side plate 61 and the first right side plate 62 overlap the support portion 33, respectively. Since the mounting pieces 611 and 621 and the arm 56 are positioned at the upper part of the housing 10, it is easy to insert the screw 9 from above and workability is improved. Then, the screw holes 611a, 621a, and 561 are fixed to the screw holes 33a of the support portion 33 with the screws 9.

  Since the mounting pieces 611 and 621 and the arm 56 are located at the top of the casing 10 and close to the operator, there is no need for a space for inserting a driver between the heat exchanger 50 and the partition plate 28. 10 can be reduced in size.

  After assembling other parts (pipe, electrical component box, drain pump, etc.) to the casing 10 in the state of FIG. 8, the left side plate 22 and the right side plate 23 are fixed to the top plate 27. As shown in FIG. 3, the left side plate 22 and the right side plate 23 have side surfaces 22 a and 23 a that are bent toward the air outlet 18, and a support column 21 is fixed to this upper end. Further, the lower ends of the side surfaces 22 a and 23 a are located inside the housing 10 with respect to the lower ends of the front surface portions 712 and 722 of the heat exchanger mounting plate 7. Then, a flange 18 a is overlapped around the air outlet 18 surrounded by the top plate 27, the column 21, the left side plate 22, and the right side plate 23.

  Next, the screw 9 is fixed to the screw hole stacked in the order of the flange 18a → the front surface portion 712 of the heat exchange left mounting plate 71 → the side surface 22a of the left side plate 22. Similarly, the screw 9 is fixed to the screw hole stacked in the order of the flange 18a → the front surface portion 722 of the heat exchange right mounting plate 72 → the side surface 23a of the right side surface plate 22. Thereby, the heat exchanger unit 5 is fixed to the housing 10.

  Next, the drain pan 30 is placed on the heat exchange left mounting plate 71 and the heat exchange right mounting plate 72 and pressed. Thus, the top and bottom of the heat exchanger unit 5 are sandwiched between the heat insulating material 31 and the drain pan 30. Finally, the casing 10 is assembled by covering with the blower chamber bottom plate 25 and the heat exchanger bottom plate 26 and fixing with a screw.

  On the front side of the housing 10, an air outlet 18 and a front surface portion 722 of the heat exchange right mounting plate 72 appear. The front surface portion 722 of the heat exchange right mounting plate 72 covers the piping chamber PC so that the piping chamber PC is blocked even when there is blown air that has entered the piping chamber PC through the gap of the side plate support 65. Thus, the blown air does not flow out, and it is possible to prevent the generation of noise.

  The indoor unit 1A equipped with the horizontal V-shaped heat exchanger 50 configured as described above partitions the first left side plate 61 and the first right side plate 62 of the first heat exchanger 51 located above during assembly. By fixing to the plate 28, the mounting workability of the heat exchanger 50 can be improved, and a space for inserting a driver between the heat exchanger 50 and the partition plate 28 is not required, so that the housing 10 can be downsized. . Moreover, it becomes possible to prevent the heat exchanger 50 from being deformed by supporting the heat exchanger 50 with an arm.

1: duct type air conditioner 1A: indoor unit, 10: housing, 15: air inlet 18: air outlet, 18a: flange 22: left side plate, 22: right side plate, 27: top plate, 28: partition Plate 33: Supporting part 4: Blower fan unit, 40: Blower fan 5: Heat exchanger unit, 50: Heat exchanger 51: First heat exchanger, 52: Second heat exchanger, 56: Arm 6: Side plate 61 : First left side plate, 611: mounting piece 62: first right side plate, 621: mounting piece 63: second left side plate 64: second right side plate 65: side plate support 7: heat exchanger mounting plate 71: heat exchanger left mounting plate , 711: Heat exchange mounting part, 712: Front part 72: Heat exchange right mounting plate, 721: Heat exchange mounting part, 722: Front part FC: Blower room, HC: Heat exchanger room, PC: Piping room

Claims (2)

A rectangular parallelepiped housing that is surrounded by a top plate, a bottom plate, a left side plate, and a right side plate, has an air outlet on the front surface, and has an air suction port on the rear surface. In a duct-type air conditioner partitioned into a heat exchanger chamber on the air outlet side that houses a unit and a blower chamber on the air inlet side that houses a blower fan unit,
The heat exchanger unit has a first heat exchanger and a second heat exchanger, and is fixed to each of a heat exchanger formed in a lateral V shape in a side view and both side ends of the heat exchanger. said heat exchanger has a two side plates for fixing to the partition plate, the attached heat交取plate for fixing two said side plates to each of the left side plate or the right side plate together with the side plates the partition An attachment piece is provided on the side close to the plate, the partition plate is provided with a support portion for receiving and fixing the attachment piece, and between the partition plate side of the first heat exchanger and the second heat exchanger. Is provided with an arm for supporting the first heat exchanger and the second heat exchanger, and the arm is fixed to the support portion . The heat exchanger mounting plate has a heat exchanger mounting portion for fixing the side plate, a front surface portion bent at a right angle from the heat exchanger mounting portion and fixed to the housing, and one of the two heat exchanger mounting plates. The front part is fixed to the left side plate with screws, and the front part of the other heat exchanger mounting plate is formed to be longer than one of the front parts and covers a part of the front of the casing. The duct type air conditioner according to claim 1, wherein the duct type air conditioner is fixed to the right side plate with screws.

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