JP2009097741A - Indoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioner improved in working efficiency in electric work or service maintenance, having a wide suction space of a blower and having superior performance. <P>SOLUTION: This indoor unit of the air conditioner includes a housing 1a composed of a top plate 2, a bottom plate 3 and a back plate 4, and is provided with an air distribution chamber 7 provided with a fan casing 6 incorporating the blower 5, a heat exchanging chamber 9 defined from the air distribution chamber 7 by a partitioning plate 10 and provided with a heat exchanger 8, and a power source board 12 incorporating electric components (not shown in figure) such as a substrate and disposed on a lower face of the bottom plate 3. Installation work such as wiring can be improved without disturbed by the fan casing incorporated in the air distribution chamber 7, further the suction space of the blower 5 can be increased and suction resistance can be reduced as the power source board 12 is not disposed in the air distribution chamber 7, and the performance of the air conditioner can be improved. Further the wiring to a motor (not shown in figure) for driving the blower can be shortened, so that the arrangement of wiring can be simplified. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner.

  Conventionally, a power supply plate in an indoor unit of an air conditioner that is generally suspended from a ceiling is generally installed in a corner suction space between the top plate and the rear plate (for example, a patent) Reference 1).

  FIG. 7 is a cross-sectional view of a conventional air conditioner indoor unit described in Patent Document 1, and FIG. 8 is a plan cross-sectional view of a state in which the suction grill is removed from the bottom surface of the air conditioner indoor unit. .

As shown in FIGS. 7 and 8, a box 1a of an indoor unit main body 1 of an air conditioner suspended from a conventional ceiling is composed of a top plate 2, a bottom plate 3 and a rear plate 4, and the box A fan chamber 6 in which a fan casing 6 incorporating a blower 5 is disposed, and a heat exchanger 8 that is partitioned by the blower chamber 7 and a partition plate 10 and is located on the blow-out side of the blower 5 are disposed in 1a. And a drain pan 11 for temporarily storing drain water from the heat exchanger 8, and a corner portion 1b of the top plate 2 and the rear plate 4 in the blower chamber 7 is provided with a substrate or the like. A power supply plate 12 on which electrical components (not shown) are mounted, and a power supply plate cover 13 that covers and protects the power supply plate 12 are disposed.
JP 2000-9328 A

  However, in the configuration of the conventional indoor unit of the air conditioner, since the power supply plate 12 is disposed in a narrow space in the air blowing chamber 7, it is obstructed and installed by the fan casing 6 incorporated in the air blowing chamber 7. The workability at the time of power supply construction and service maintenance is very bad, causing poor work, and the power supply plate 12 reduces the suction space of the blower 5 and increases the suction resistance, thereby deteriorating the air conditioning performance of the air conditioner However, since the fan motor wiring having a long dimension is necessary, it has been difficult to organize the wiring.

  The present invention solves the above-mentioned conventional problems, and is excellent in installation workability such as wiring without being obstructed by a fan casing built in the air blowing chamber, and the air suction space of the air blower is large and the suction resistance is reduced. Therefore, an object of the present invention is to provide an indoor unit for an air conditioner that can improve the performance of the air conditioner and can easily arrange fan motor wiring.

  In order to solve the above-described conventional problems, an air conditioner indoor unit according to the present invention includes a box composed of a top plate, a bottom plate, and a rear plate, and a fan casing incorporating a blower is disposed in the box. A blower chamber provided, a heat exchange chamber partitioned by the blower chamber and a partition plate and provided with a heat exchanger, a drain pan for temporarily storing drain water from the heat exchanger, and a bottom plate A power supply plate with built-in electrical components such as a board is installed on the bottom surface, and the installation work such as wiring is improved without obstruction by the fan casing built in the blower chamber. Since it is not arranged in the chamber, the suction space of the blower becomes large, the suction resistance can be reduced, the performance of the air conditioner can be improved, and the wiring to the motor that drives the blower can also be shortened Wiring arrangement is easy To become.

The indoor unit of the air conditioner of the present invention improves the installation workability such as wiring without being obstructed by a fan casing or the like built in the blower chamber, and further, since the power supply plate is not arranged in the blower chamber, The suction space of the suction part is increased, the suction resistance can be reduced, the performance of the air conditioner can be improved, and the wiring to the motor that drives the blower can also be shortened, so the wiring is organized. Easy.

  1st invention is equipped with the box comprised by the top plate, the baseplate, and the backplate, the ventilation chamber by which the fan casing which incorporated the air blower in the said box was arrange | positioned, and the said ventilation chamber and a partition plate partition A heat exchange chamber in which the heat exchanger is disposed, a drain pan for temporarily storing drain water from the heat exchanger, and a power supply plate incorporating electrical components such as a substrate on the bottom surface of the bottom plate As a result, installation work such as wiring is improved without obstruction by the fan casing built in the blower chamber, and the power supply plate is not located in the blower chamber. The resistance can be reduced, the performance of the air conditioner can be improved, and the wiring to the motor that drives the blower can be shortened, so the wiring can be easily arranged.

  In the second invention, in particular, a concave groove is provided on the lower surface of the drain pan of the first invention, and the power supply plate is fitted into the concave groove and protected by the bottom plate, and the material cost of the drain pan is reduced. Since the conventional power supply plate cover is unnecessary, it can be constructed at low cost.

  In particular, the third invention divides the bottom plate of the second invention into a bottom plate A and a bottom plate B, and protects the power supply plate with the bottom plate A. When maintaining or replacing the power supply plate, There is no need to remove it. By simply removing the bottom plate A, work such as wiring can be performed, workability can be improved, and the cover of the power supply plate can be eliminated.

  In the fourth invention, in particular, a concave groove is provided in the lower surface of the drain pan of the first invention, and a part of the bottom plate is processed into a substantially U-shaped cross section so as to match the size of the power supply plate and avoid the power supply plate In addition, the power plate fitted in the concave groove is protected by a part of the bottom plate, and the strength of the bottom plate is not reduced. Work becomes possible, workability can be improved, and the cover of the power supply plate can be eliminated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of an indoor unit of an air conditioner according to a first embodiment of the present invention, and FIG. 2 is a plan cross-sectional view of a state in which a suction grill is removed from the bottom surface of the indoor unit.

  1 and 2, the box body 1a of the indoor unit body 1 of the indoor unit of the air conditioner in the present embodiment is constituted by a top plate 2, a bottom plate 3, and a rear plate 4, and inside the box 1a, A blower chamber 7 in which a fan casing 6 incorporating a blower 5 driven by a motor (not shown) is disposed, and a heat exchanger that is partitioned by the blower chamber 7 and a partition plate 10 and is located on the outlet side of the blower 5. 8 is disposed, and a drain pan 11 for temporarily storing drain water from the heat exchanger 8 is disposed, and electrical components such as a substrate (not shown) are provided on the bottom surface of the bottom plate 3 of the box 1a. ) Is installed.

  In this embodiment, as shown in FIGS. 1 and 2, a concave groove 15 is provided on the lower surface of the drain pan 11, and the power supply plate 12 is fitted into the concave groove 15 to be protected by the bottom plate 3. I am doing so.

About the indoor unit of the air conditioner comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  By disposing the power supply plate 12 containing electrical components such as a substrate on the lower surface of the bottom plate 3 of the indoor unit body 1, it is not obstructed by the fan casing 6 built in the blower chamber 7. Since the installation workability such as the power supply plate 12 is not in the blower chamber 7, the suction space of the suction portion 14 is increased, the suction resistance is reduced, and the air conditioning performance of the air conditioner can be improved. In addition, since the wiring for the motor can be shortened, the wiring can be easily arranged.

  Further, by protecting the power supply plate 12 fitted in the concave groove 15 with the bottom plate 3, the material cost of the drain pan 11 can be reduced, and the power supply plate cover for protecting the power supply plate 12 can be eliminated.

(Embodiment 2)
FIG. 3 is a cross-sectional plan view of the air conditioner indoor unit according to the second embodiment of the present invention with the suction grill removed from the bottom surface, and FIG. 4 is a perspective view of the air conditioner indoor unit. . In addition, about the same part as the indoor unit of the air conditioner in the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, as shown in FIGS. 3 and 4, the bottom plate 3 is divided into a bottom plate A 3 a that covers the portion of the power supply plate 12 and a bottom plate B 3 b that covers the other portions. The power supply plate 12 is fitted into the provided groove 15 and the bottom plate A3a is attached so as to cover the power supply plate 12, so that it is not necessary to remove the entire bottom plate 3 at the time of maintenance or replacement of the power supply plate 12, thereby improving the workability. The power supply cover can be eliminated.

(Embodiment 3)
FIG. 5 is a cross-sectional plan view of the air conditioner indoor unit according to the third embodiment of the present invention with the suction grill removed from the bottom, and FIG. 6 is a perspective view of the air conditioner indoor unit. . In addition, about the same part as the indoor unit of the air conditioner in the said embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In this embodiment, as shown in FIGS. 4 and 5, a part of the bottom plate C 3 c of the bottom plate 3 is processed into a substantially U-shaped cross section so as to be removable and to avoid the power supply plate 12. The bottom plate C3c is fitted into the concave groove 15 provided on the lower surface of the base plate and the bottom plate C3c is attached so as to cover the power plate 12. The bottom plate C3c is further downsized without reducing the strength of the bottom plate 3. By simply removing the cable, wiring and other work can be performed, further improving workability.

  As described above, the indoor unit of the air conditioner according to the present invention improves the installation workability of wiring and the like without being obstructed by a fan casing or the like built in the blower chamber, and further, the power supply plate is installed in the blower chamber. Since it is not arranged, the suction space of the blower is increased, the suction resistance can be reduced, the performance of the air conditioner can be improved, and the wiring for the motor for driving the blower is shortened so that the wiring can be organized. It can be easily applied to ceiling-embedded air conditioners.

Sectional drawing of the indoor unit of the air conditioner in the 1st Embodiment of this invention Cross-sectional plan view of the indoor unit with the suction grill removed from the bottom Plan sectional drawing of the state which removed the suction grille from the bottom face of the indoor unit of the air conditioner in the 2nd Embodiment of this invention Perspective view of the indoor unit of the air conditioner Plan sectional drawing of the state which removed the suction grille from the bottom face of the indoor unit of the air conditioner in the 3rd Embodiment of this invention Perspective view of the indoor unit of the air conditioner Cross-sectional view of a conventional air conditioner indoor unit Cross-sectional plan view of the indoor unit with the suction grill removed from the bottom

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioner body 1a Box 2 Top plate 3 Bottom plate 3a Bottom plate A
3b Bottom plate B
3c Bottom plate C
4 Rear plate 5 Blower 6 Fan casing 7 Blower chamber 8 Heat exchanger 9 Heat exchange chamber 10 Partition plate 11 Drain pan 12 Power supply plate 13 Power supply plate cover 14 Suction part 15 Concave groove

Claims (4)

A box composed of a top plate, a bottom plate, and a rear plate, and a fan chamber in which a fan casing incorporating a blower is disposed, and a heat exchanger partitioned by the fan chamber and a partition plate. A heat exchange chamber provided and a drain pan for temporarily storing drain water from the heat exchanger are arranged, and a power supply plate having a built-in electrical component such as a substrate is disposed on the bottom surface of the bottom plate. Air conditioner indoor unit. The indoor unit of an air conditioner according to claim 1, wherein a concave groove is provided on a lower surface of the drain pan, and a power supply plate is fitted into the concave groove and protected by a bottom plate. The indoor unit of the air conditioner according to claim 2, wherein the bottom plate is divided into a bottom plate A and a bottom plate B, and the power supply plate is protected by the bottom plate A. A concave groove is provided on the lower surface of the drain pan, a part of the bottom plate is processed into a substantially U-shaped cross section so as to match the dimensions of the power supply plate and avoid the power supply plate, and the power supply plate fitted in the concave groove is The indoor unit of an air conditioner according to claim 1, wherein the indoor unit is protected by a part of the bottom plate.

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