JP2009250525A - Outdoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent temperature rising of electric components of a reactor periphery and loss increase in a reactor by improving heat radiation of the reactor in an outdoor unit for an air conditioner. <P>SOLUTION: The reactor 21 is arranged such that one part of a winding 22 of the reactor 21 is exposed in a middle of an air blow path of a blower 14 blowing air to a heat exchanger for heat radiation. Since the winding 22 of the reactor 21 is forcibly cooled by blown air from the blower 14, the heat radiation of the reactor 21 is improved. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an outdoor unit of an air conditioner, for example, a reactor mounting structure of an outdoor unit on which an inverter circuit is mounted.

  FIG. 4 shows a configuration diagram of an outdoor unit of an air conditioner in the prior art (see, for example, Patent Document 1). In the figure, electric parts such as a blower chamber 15 and a compressor 16 in which a heat exchanger 13 for heat dissipation and a blower 14 are installed are installed by a vertical metal partition plate 12 erected on an outdoor unit bottom plate 11. An electrical component box 19 that partitions the compressor chamber 17 and fixes the control circuit board 18 and the like to the upper end of the partition plate 12 is installed across the blower chamber 15 side and the compressor chamber 17 side.

On the side of the blower chamber 15 of this electrical component box 19, a heat sink such as a power transistor that generates a high temperature by flowing a large current to the compressor 16 is provided with an opening in the electrical component box 19 so as to face the blower chamber 15 side. Things are generally known. It is generally known that a compressor 16 is installed at the lower part of the compressor chamber 17 side, and the reactor 21 is fixed to the partition plate 12 from the compressor chamber 17 side in the middle of the compressor 16 and the electrical component box 19. It has been. The electrical component box 19 and the reactor 21 are connected by a lead wire 23 on the compressor chamber 17 side.
JP 2000-104950 A

  However, the conventional configuration has the following problems. If a large current continues to flow through the reactor, the reactor temperature rises, and the equipment around the reactor, especially the electronic components inside the electrical component box, is blown out by radiant heat, increasing the ambient temperature, shortening the life of the electronic components There was a problem that there was. In addition, when the temperature of the reactor rises, the DC resistance increases due to the temperature characteristics of the windings, and the loss in the reactor increases, thus causing a problem of deteriorating the power consumption efficiency of the air conditioner.

  The present invention solves the above-described conventional problems, and provides an outdoor unit of an air conditioner that improves heat dissipation of a reactor, prevents an increase in temperature of electronic components around the reactor, and prevents an increase in loss in the reactor. With the goal.

  In order to solve the above-described conventional problems, the outdoor unit of the air conditioner of the present invention is configured such that the windings constituting the reactor are arranged in the ventilation path of the blower. As a result, the heat dissipation of the reactor can be improved by blowing air from the blower, so that the temperature rise of the electronic components around the reactor and the increase in loss in the reactor can be prevented.

  The outdoor unit of the air conditioner of the present invention can improve the heat dissipation of the reactor, prevent the temperature rise of the electronic components around the reactor, and extend the life of the electronic components. At the same time, the loss in the reactor can be prevented from increasing, and the power consumption efficiency of the air conditioner can be improved.

The first invention includes a compressor that compresses a refrigerant, a heat exchanger for heat dissipation that performs heat exchange with the indoor side via the refrigerant discharged from the compressor, a blower that blows air to the heat exchanger for heat dissipation, In an outdoor unit of an air conditioner having a control circuit board for controlling the compressor and the blower and a reactor connected to the control circuit board, windings constituting the reactor are arranged in the course of the blower path of the blower. did. As a result, the heat dissipation of the reactor can be improved, so that it is possible to prevent the temperature of peripheral electronic components from rising and the loss in the reactor from increasing.

  In the second invention, in particular, in the first invention, a coating material for moisture-proofing and rust-proofing is applied to the windings of the reactor disposed in the course of the blowing path of the blower. This reliably protects the reactor windings from corrosion due to wind and rain.

(Embodiment 1)
Hereinafter, the structure of the outdoor unit of the air conditioner in Embodiment 1 of this invention is demonstrated using drawing. FIG. 1 shows a configuration diagram of an outdoor unit of an air conditioner according to Embodiment 1 of the present invention. In FIG. 1, electrical components such as a blower chamber 15 in which a heat exchanger 13 for heat dissipation and a blower 14 are installed and a compressor 16 are installed on a vertical metal partition plate 12 erected on an outdoor unit bottom plate 11. The electrical component box 19 is partitioned across the blower chamber 15 side and the compressor chamber 17 side. The electrical component box 19 has a control circuit board 18 and the like fixed to the upper end of the partition plate 12.

  A compressor 16 is installed in the lower part on the compressor chamber 17 side, and an opening 20 is provided in the partition plate 12 in the middle between the compressor 16 and the electrical component box 19, and the winding 22 of the reactor 21 from the opening 20. The reactor 21 is fixed from the compressor chamber 17 side so that a part of the chamber is exposed to the blower chamber 15. The control circuit board 18 and the reactor 21 are connected by a lead wire 23 on the compressor chamber 17 side.

  FIG. 2 shows a reactor mounting structure diagram according to Embodiment 1 of the present invention. FIG. 2 shows a state before the reactor 21 is attached to the partition plate 12, and in a state where the reactor 21 is fixed to the partition plate 12, the opening 20 is formed in the reactor 21 so that wind and rain do not enter the compressor chamber 17 from the blower chamber 15. It is completely blocked. As a result, since the winding 22 of the reactor 21 is forcibly cooled by the air blown from the blower 14, the heat dissipation of the reactor 21 can be improved.

(Embodiment 2)
Hereinafter, the structure of the outdoor unit of the air conditioner in Embodiment 2 of this invention is demonstrated using drawing. FIG. 3 is a configuration diagram of an outdoor unit of an air conditioner according to Embodiment 2 of the present invention. 3, in addition to the configuration of the first embodiment shown in FIG. 1, a coating material 24 for moisture and rust prevention is applied to the winding 22 of the reactor 21 arranged in the blowing path of the blower 14. .

  As a result, the winding 22 is double protected by the coating material 24 in addition to the insulating material usually applied to the winding 22 such as varnish, so that the winding 22 is reliably protected from corrosion caused by wind and rain. be able to.

  As described above, the outdoor unit of the air conditioner according to the present invention can improve the heat dissipation of the reactor and prevent the temperature rise of the electronic components around the reactor and the increase in loss in the reactor. It is also useful as a heat pump water heater having the same configuration as the outdoor unit of a harmony machine.

The block diagram of the outdoor unit of the air conditioner in Embodiment 1 of this invention Reactor mounting structure diagram in Embodiment 1 of the present invention The block diagram of the outdoor unit of the air conditioner in Embodiment 2 of this invention Configuration diagram of outdoor unit of air conditioner in the prior art

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Outdoor unit bottom plate 12 Partition plate 13 Heat exchanger for heat radiation 14 Blower 15 Blower chamber 16 Compressor 17 Compressor chamber 18 Control circuit board 19 Electrical component box 20 Opening 21 Reactor 22 Winding 23 Lead wire 24 Coating material

Claims (2)

A compressor that compresses the refrigerant; a heat exchanger for heat dissipation that exchanges heat with the indoor side via the refrigerant discharged from the compressor; a blower that blows air to the heat exchanger for heat dissipation; the compressor and the blower In an outdoor unit of an air conditioner having a control circuit board that controls the reactor and a reactor connected to the control circuit board, the winding that constitutes the reactor is disposed in the air passage of the blower The outdoor unit of a harmony machine. The outdoor unit of an air conditioner according to claim 1, wherein a coating material for moisture and rust prevention is applied to the winding of the reactor arranged in the course of the blowing path of the blower.

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