JP6323203B2 - Duct type air conditioner - Google Patents

Description

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

  As a conventional duct type air conditioner 1, for example, as shown in FIG. 1, a fan 10 and a heat exchanger 50 are accommodated in a main body 10 installed between an indoor ceiling surface 14 and a building ceiling surface 11. is there. The heat exchanger 50 is configured by combining a rectangular upper heat exchanger 51 arranged to be inclined to the upper stage and a rectangular lower heat exchanger 52 arranged to be inclined to the lower stage. The upper heat exchanger 51 and the lower heat exchanger 52 are connected by a connecting portion 55 in which the lower end of the upper heat exchanger 51 and the upper end of the lower heat exchanger 52 are in contact with each other. In a side view visually recognized at 1, it is formed in a “wedge shape”. By forming the heat exchanger 50 in a “wedge shape”, for example, the height of the heat exchanger can be made lower than when the heat exchanger is placed vertically, and the flat heat exchanger is placed diagonally. The depth of the heat exchanger can be made narrower than when Thereby, the height H and the depth D of the main body 10 can be suppressed, and the main body 10 becomes smaller. Further, since the air can be evenly applied to the heat exchanger, the efficiency of the heat exchanger is improved. (See Patent Document 1)

JP 2012-013295 A

Since the heat exchanger of the duct type air conditioner is formed by arranging aluminum fans in parallel, there is a possibility that the aluminum fin plastically deforms and a gap is formed in the connecting part when it is dropped during transportation .
Moreover, when a plurality of blower fans are connected laterally, the heat exchanger becomes long according to the number of blower fans. The left and right ends of the heat exchanger are supported by side plates, but if the heat exchanger is long, the center area will drop downward and distortion will occur.Therefore, there is a gap in the connection between the upper heat exchanger and the lower heat exchanger. There is a possibility. Then, air that is not heat-exchanged through the gaps may cause a decrease in heat exchange efficiency and condensation.

  Therefore, an L-shaped wind shield made of steel plate is attached to the connecting portion of the heat exchanger, thereby preventing the passage of wind that is not heat-exchanged and suppressing the deformation of the heat exchanger.

  However, the steel sheet material used for the windshield has a high material cost and contributes to an increase in cost.

  Accordingly, the present invention proposes a structure that can prevent deformation of the heat exchanger in a duct-type air conditioner equipped with a “wedge-type” heat exchanger.

  In order to solve the above-described problems, the present invention provides a suction fan and a blower fan on the suction port side in a main body provided with a blower port on a surface facing the suction port. A heat exchanger is disposed, and the heat exchanger comprises a rectangular upper heat exchanger disposed on the upper side and a lower heat exchanger disposed on the lower side, the upper heat exchanger and the lower heat exchanger The exchanger is inclined, the tops of the respective corners on the outlet side are aligned, the corner on the inlet side of the upper heat exchanger is positioned on the upper surface of the main body, and the inlet of the lower heat exchanger In the duct-type air conditioner in which the corner portion on the side is positioned on the bottom surface of the main body, the heat exchanger includes a connection portion including the top portions of the upper heat exchanger and the lower heat exchanger by wind shield plate pressing. The heat exchanger has a top end fixed to the main body and a lower end at the upper side heat. Characterized in that it is supported by the protrusions from the partition member protruding toward the connecting portion of the heat exchanger defining the support plate and the outlet for supporting the central portion of the exchanger.

  Moreover, the structure provided with the notch part which the said projection part of the said partition member receives the said wind-shield board holding | suppressing is also included.

  Furthermore, the protrusion includes a configuration in which the heat exchanger is sandwiched and fixed by the protrusion and the support plate by being formed in a shape matching the shape of the wind shield and being in close contact with the wind shield. It is.

  The heat exchanger in the duct-type air conditioner of the present invention configured as described above includes a support plate that has an upper end fixed to the main body and a lower end that supports the central portion of the upper heat exchanger, and a partition member that partitions the outlet. The deformation of the heat exchanger can be prevented by being supported by the protruding portion protruding toward the connecting portion of the heat exchanger.

It is a figure which shows the installation state of the duct type air conditioner by this invention. 1 is an external view of a duct type air conditioner according to the present invention. It is sectional drawing of the duct type air conditioner by this invention. FIG. 4 is an exploded view around the heat exchanger of FIG. 3. It is the enlarged view which looked at the X section of FIG. 4 from the facing side. It is sectional drawing of Example 2 of the duct type air conditioner by this invention. (A) is an exploded view around the heat exchanger of FIG. 6, and (b) is an enlarged view of the Y part of (a) as seen from the facing side. It is an external view of Example 3 of the duct type air conditioner according to the present invention.

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.
<First Embodiment>

  A duct type air conditioner 1 (hereinafter referred to as an air conditioner 1) according to the present invention is suspended from a building ceiling surface 11 as shown in FIG. 1 (components common to the conventional example are denoted by the same reference numerals). The mounting bracket 13 attached to the main body 10 of the air conditioner 1 is fixed to the lower bolt 12 so as to be suspended. Moreover, you may install in the indoor ceiling surface 14 instead of hanging. The main body 10 of the air conditioner 1 is formed in a box shape made of a steel plate.

  The right side surface of the box-shaped main body 10 of the air conditioner 1 in FIG. 1 is the back surface, the left surface is the front surface facing the back surface, the surface on the building ceiling surface 11 side is the top surface, and the indoor ceiling A surface on the surface 14 side is defined as a 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.

  The main body 10 of the air conditioner 1 shown in FIG. 1 and FIG. 2 is assembled with the top plate 27 on the top as the bottom, contrary to the time of installation. Therefore, the top plate 27 on the upper surface, the right side plate 22 on the right side fixed to the top plate 27, the electrical component box lid 23 arranged on the right side plate 22, and the left side plate on the left side fixed similarly to the top plate 27. 24, a back plate 26 provided with a suction port 15 on the back and provided with a flange 15a around the suction port 15, a front plate 25 provided with a blower outlet on the front and provided with a flange 18a around the blowout port, and a bottom surface. It consists of a bottom plate 21.

  One end of the suction duct 16 is connected to the flange 15 a of the 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. One end of the blowout duct 19 is connected to the flange 18 a of the 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 from the blowing grill 20 through the blowing duct 19 as cold air or hot air to the air-conditioned room K again.

  As shown in FIG. 3, the interior of the main body 10 is erected in parallel with the front plate 25, and heat is exchanged between the blower chamber 4 on the suction inlet 15 side and the outlet 18 side by a partition plate 28 fixed to the top plate 27 and the bottom plate 21. It is partitioned into a chamber 5.

  In the blower chamber 4, an electrical component box (not shown) provided with electrical components for controlling the air conditioner 1 and a blower fan 40 are arranged inside the electrical component box lid 23. The sirocco fan is used as the blower fan 40. The fan main body 41 having a plurality of blades, the fan cover 43 that surrounds the fan main body 41 and forms the air passage 42, and the rotary shaft 41a of the fan main body 41 are supported and driven. It consists of a fan motor that does not. The partition plate 28 is provided with an opening corresponding to the fan cover 43, and the air blown out from the fan main body 41 by fitting the heat exchanger chamber side outlet 43 a of the fan cover 43 into the opening is provided in the heat exchanger chamber 5. To be blown. One or a plurality of blower fans 40 are arranged side by side in parallel with the partition plate 28, and the rotation shaft 41a of each blower fan 40 is connected to and driven by a fan motor. In addition, after mutually connecting the rotating shaft 41a of several ventilation fans 40, you may connect it with a fan motor.

  The heat exchanger chamber 5 includes a heat exchanger 50, a drain pan 30 disposed on the bottom plate 21 side for receiving drain water generated from the heat exchanger 50, a drain pump (not shown) for draining the drain water to the outside, a ceiling A heat insulating material 31 fixed to the heat exchanger chamber 5 side of the plate 27 is disposed.

  As shown in FIGS. 3 and 4, the heat exchanger 50 is formed by combining two heat exchangers, that is, an upper heat exchanger 51 disposed on the upper side and a lower heat exchanger 52 disposed on the lower side. The In both the upper heat exchanger 51 and the lower heat exchanger 52, rectangular aluminum fins 53 are arranged in parallel according to the width of the blower fan 40, and a plurality of transmissions arranged so as to be orthogonal to the aluminum fins 53. This is a fin tube type heat exchanger composed of a heat tube 54. The upper heat exchanger 51 and the lower heat exchanger 52 are formed in a rectangular shape by arranging rectangular aluminum fins 53 in parallel.

  In the heat exchanger 50, the surface formed by connecting the short sides of the aluminum fins 53 is an end surface, the end surface on the air outlet 18 side of the upper heat exchanger 51 is the first end surface 51a, and the upstream side (the blower fan side). The second end face 51b, the lower corner of the first end face 51a as the top 51c, the upper corner of the second end face 51b as the first corner 51d, and the lower corner of the second end face 51b as the second corner 51e. Further, the end face on the outlet 18 side of the lower heat exchanger 52 is a third end face 52a, the upstream side (the blower fan side) is a fourth end face 52b, the upper corner of the third end face 52a is a top 52c, and the fourth end face. The lower corner of 52b will be described as the third corner 52d.

  The upper heat exchanger 51 is inclined so that the first end face 51a is lower and the second end face 51b is higher from the first end face 51a toward the second end face 51b, and the first corner 51d is the top plate 27 of the main body 10. It arrange | positions in the position which touches the heat insulating material 31 fixed to. Between the first corner portion 51 d and the heat insulating material 31, the wind shielding member 33 is engaged so that air that is not heat-exchanged does not pass. The lower heat exchanger 52 is inclined so that the third end surface 52a is higher and the fourth end surface 52b is lower from the third end surface 52 toward the fourth end surface 52b, and the third corner portion 52d is the bottom plate 21 of the main body 10. It arrange | positions in the position which touches the drain pan 30 arrange | positioned by the side. Between the third corner portion 52d and the drain pan 30, the wind shielding member 33 is engaged so that air that is not heat-exchanged does not pass. The tops 51c and 52c of each other are combined and combined in a “wedge shape” in a side view. By making the heat exchanger 50 “wedge-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 main body 10 can be suppressed. The main body 10 can be reduced in size, and the steel plate material of the main body 10 can be reduced.

  A portion composed of the first end surface 51 a and the top portion 51 c of the upper heat exchanger 51 and the third end surface 52 a and the top portion 52 c of the lower heat exchanger 52 is a connecting portion 55.

  As shown in the conventional example, there is a possibility that a gap is formed between the top portion 51c of the upper heat exchanger 51 and the top portion 52c of the lower heat exchanger 52 which are in contact with each other. If there is a gap, air that is not heat-exchanged through the connecting portion 55 may pass, resulting in a decrease in heat exchange efficiency and condensation. Therefore, an L-shaped wind shield 56 having a shape matched to the first end surface 51a and the second end surface 52a is attached to the connecting portion 55 so as to cover the connecting portion 55. The wind shield 56 is provided to cover a gap formed between the top 51c of the upper heat exchanger 51 and the top 52c of the lower heat exchanger 52, and therefore may be made of a resin having no strength like a steel plate. The wind shield 56 is locked to the heat transfer tubes 54 of the upper heat exchanger 51 and the lower heat exchanger 52 by wind shield pressers 57.

  The wind shield plate presser 57 shown in FIG. 5 has hooking portions 57d and 57e that warp from the respective tips of the locking portions 57b and 57c and the locking portions 57b and 57c bent in a bow shape from the upper and lower sides of the vertical portion 57a and the vertical portion 57a. It is made of wire with After the vertical portion 57a is brought into contact with the wind shield plate 56 and the wind shield plate 56 is pressed by the locking portions 57b and 57c, the hook portions 57d and 57e are inserted between the aluminum fins 53 by the elasticity of the wire and hooked on the heat transfer tube 54. Thus, the wind shielding plate 56 is fixed to the connecting portion 55 of the heat exchanger 50. It is necessary to fix the wind shield 56 with at least two wind shield plates 57.

  Next, a method of fixing the “wedge type” heat exchanger 50 to the main body 10 will be described. As shown in FIGS. 2 and 3, the left end of the heat exchanger 50 is attached to the top plate 27 inside the left side plate 24, and is fixed by a fixing member 32 made of resin formed in accordance with the shape of the heat exchanger 50. The right end of the heat exchanger 50 is fixed to the top plate 27 between the drain pump and the heat exchanger 50 (not shown), and is fixed by a resin-made fixing member formed in accordance with the shape of the heat exchanger 50. Fixed.

  Since the heat exchanger 50 may be deformed as shown in the conventional example, it is necessary to fix not only the fixing members 32 at the left and right ends but also the central portion of the heat exchanger 50. Therefore, the heat exchanger 50 is sandwiched from the front and rear by the support plate 61 that fixes the central upper portion of the heat exchanger 50 to the top plate 27 and the partition member 62 that fixes the central portion of the connecting portion 55 of the heat exchanger 50 to the outlet 18. 50 is fixed.

  The support plate 61 shown in FIGS. 3 and 4 is formed by bending a steel plate. The support plate 61 is fixed by welding the upper end surface 61 a to the center of the top plate 27, and the lower end surface 61 b suspended from the top plate 27 inserts the center portion of the second corner 51 e of the upper heat exchanger 51. The center part of the heat exchanger 50 is supported. Thereby, it fixes so that a clearance gap may not be made between the upper side heat exchanger 51 and the heat insulating material 31. FIG.

  The partition member 62 shown in FIGS. 2 to 5 has a columnar shape formed by bending a sheet metal and extending in the vertical direction. The upper end piece 62a and the lower end piece 62b are fixed to the flange 18a of the air outlet 18 of the front plate 25 with screws.

  The partition member 62 includes a protrusion 63 protruding toward the connecting portion 55 of the heat exchanger 50 at the center. The protrusion 63 is formed by extruding the partition member 62 by pressing, and includes an opening 63a on the upper side. The opening 63a includes a notch 63b at the tip in the direction of the connecting portion 55. The lower end of the locking portion 57c of the wind shield presser 57 shown above is fitted into the notch 63b. Thereby, the heat exchanger 50 to which the wind shield plate presser 57 is attached is supported by the opening 63a. Accordingly, the heat exchanger 50 is fixed to the support member 62.

  The upper end on the back side of the heat exchanger 50 (the second corner 51e of the upper heat exchanger 51) is fixed by the support plate 61, and the center on the front side of the heat exchanger 50 (the center of the connecting portion 55) is the partition member 62. As a result, the heat exchanger 50 can be prevented from being deformed even if it is dropped during transportation.

In the first embodiment, only one combination of the partition member 62 and the wind shielding plate holder 57 has been described.
<Second Embodiment>

  The air conditioner 1 shown in FIGS. 6 and 7 includes a protrusion 64 that protrudes from the partition member 621 toward the connecting portion 55 of the heat exchanger 50. The protrusions 64 are formed in a shape matching the L-shape of the wind shielding plate 56 by bending a sheet metal, and the upper and lower ends are welded to the partition member 621. The protrusion 64 is brought into close contact with the resin wind shield 56 having elasticity. Thereby, it becomes possible to support so that the heat exchanger 50 may be pinched | interposed by the protrusion part 64 and the support plate 61 from the front-back direction, and the deformation | transformation of the heat exchanger 50 can be prevented.

Further, at least the protrusion 64 has a top contact surface 56a of the wind shield 56 that contacts the tops 51c and 52c of the heat exchanger 50 or a contact surface 56b of the wind shield 56 that contacts the end surface 52a of the lower heat exchanger 52. As long as it matches any of the shapes, the protrusion 64 is brought into close contact with the wind shielding plate 56.
<Third Embodiment>

  Although the partition member 62 has been described as a columnar shape, the present invention is not limited to this, and when a plurality of air outlets 18 are provided on the front plate 25 as shown in FIG. 8, the wall surface of the front plate 25 may also serve as the partition member 62. Good. In this case, the protrusions 63 and 64 may be attached to the front plate 25 by welding or may be formed by extruding by pressing.

1: duct type air conditioner 10: body 15: suction port 18: outlet, 18a: flange 25: front plate 30: drain pan 31: heat insulating material 32: fixing member,
40: blower fan 50: heat exchanger 51: upper heat exchanger 51a: first end surface, 51b: second end surface, 51c: top, 51d: first corner, 51e: second corner 52: lower heat exchange Unit 52a: 3rd end surface, 51b: 4th end surface, 51c: Top part, 51d: 3rd corner | angular part 53: Aluminum fin 54: Heat transfer tube 55: Connection part 56: Wind shield 57: Wind shield press, 57a: Vertical Part, 57b / 57c: locking part, 57d / 57e: hooking part 61: support plate, 61a: upper end face, 62b: lower end face 62/621: partition member 63: projection part, 63a: opening part, 63b: notch part 64: Projection

Claims (3)

Inside the main body equipped with a suction port and a blower outlet on the surface facing the suction port, a blower fan is disposed on the suction port side, a heat exchanger is disposed on the blower port side, and the heat exchanger is It consists of an upper heat exchanger disposed on the upper side in a rectangular shape and a lower heat exchanger disposed on the lower side, and the upper heat exchanger and the lower heat exchanger are inclined, respectively on the outlet side the corners of the combined top, the corner portion of the suction plug mouth side of the upper heat exchanger is positioned on an upper surface of the main body, the corner portion of the suction plug mouth side of the lower heat exchanger of the body In the duct-type air conditioner located on the bottom,
In the heat exchanger, a windshield plate made of resin is attached to a connecting portion including the top portions of the upper heat exchanger and the lower heat exchanger by a windshield plate presser,
It said heat exchanger toward the partition member partitioning the support plate the air outlet upper end lower end is fixed to the Body to support the central portion of the upper heat exchanger to the connecting portion of the heat exchanger A duct type air conditioner supported by a protruding protrusion.   The duct type air conditioner according to claim 1, wherein the protruding portion of the partition member includes a cutout portion that receives the wind shield plate. The protrusion is formed in a shape that matches the shape of the wind shield plate, and is in close contact with the wind shield plate, so that the heat exchanger is sandwiched and fixed by the protrusion and the support plate. ducted air conditioner according to claim 1.

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