JP2005274094A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To restrict leakage of electromagnetic wave to be generated in an outdoor unit of an air conditioner to the outside of the outdoor unit. <P>SOLUTION: In order to restrict the electromagnetic wave to be generated when a large current flows, at least two or more reactors 20 and 21 or 22 and 23 are used, and the reactors are fitted to a partition plate 11 inside the outdoor unit so that they are opposite to each other in the top plate or the bottom surface thereof. With this structure, a magnetic field to be generated when current flows in a coil can be offset, and leakage of the electromagnetic wave outside from the outdoor unit can be restricted. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a reactor mounting structure for an air conditioner.

  A reactor conventionally used in an air conditioner is shown in FIG.

  In FIG. 3, reference numeral 1 denotes a mounting plate, and a core 2 is provided on the mounting plate 1. The core 2 is provided with a hole (not shown) through which the coil 3 passes, and the number of turns of the coil 3 can be adjusted using the hole. Reference numerals 4 denote terminal portions provided at both ends of the coil, which are connected to the coil 3 and other electrical components such as a control board via electric wires (not shown).

  As a general mounting structure of this reactor, a mounting structure as shown in FIG. 4 is well known. In FIG. 4, a horizontal plate 6 that forms the side wall of the outdoor unit is provided on the bottom plate 5, and a partition plate that partitions the inside into a fan chamber 8 with a fan 7 and a compressor chamber 10 in which a compressor 9 is installed. 11 is provided. The compressor chamber 10 is provided with a control board storage unit 12 that stores a control board (not shown) for controlling the outdoor unit, and a reactor 13 that forms an electric circuit with the control board. An outdoor unit is configured by surrounding this state with the front plate 14 and the top plate 15.

Moreover, as shown in FIG. 5, there is also an outdoor unit configured to use two reactors 13a and 13b. It is generally known that the purpose of using the two reactors 13a and 13b is to increase the energization time, improve the power factor, and use it as a countermeasure against harmonics. (For example, see Patent Document 1)
Japanese Patent Laid-Open No. 6-28881

  However, in the above conventional configuration, when a current flows through the coil of the reactor, a magnetic field is generated around the coil, and a low-frequency magnetic field may leak from the outdoor unit. In particular, in recent years, as seen in IEC62233 and the like, it is desired to reduce this low frequency magnetic field.

  However, it is a self-evident principle that when a current flows through a coil, a magnetic field is generated around the coil, and when the current flowing like an air conditioner increases, the generated magnetic field also increases.

  This invention solves such a conventional subject, and it aims at suppressing the electromagnetic wave propagated outside from the outdoor unit of an air conditioner.

  In order to solve the above-mentioned conventional problems, the air conditioner of the present invention is configured such that at least two or more reactors having the same winding direction are disposed facing each other so that the winding directions of the coils are opposite to each other. It cancels out the magnetic field generated by the flow.

  In the air conditioner of the present invention, the reactors are installed facing each other so that the winding directions of the coils are opposite to each other, so that the direction of the magnetic field generated when a current flows through the coils is canceled as the reverse direction and generated internally. Therefore, the magnetic field leaking from the air conditioner to the outside can be suppressed.

  In the first invention, at least two or more reactors are installed facing each other so that the winding directions of the coils are opposite to each other, and are installed so that the directions of currents flowing through the coils are opposite to each other. As a result, the direction of the magnetic field generated when a current flows through the coil can be canceled out in the reverse direction. As a result, since the magnetic field generated inside the air conditioner can be reduced, the magnetic field leaking from the air conditioner to the outside can be suppressed.

  The second invention is the first invention, in particular, in which the top surfaces of the reactors are installed facing each other. Thereby, the magnetic field generated when a current flows through the coil can be canceled.

  The third invention is particularly the first invention, in which the bottom surfaces of the reactors are installed facing each other. Thereby, the magnetic field generated when a current flows through the coil can be canceled.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 is an exploded perspective view of an outdoor unit of an air conditioner for explaining attachment of a reactor according to Embodiment 1 of the present invention. In addition, the same code | symbol is provided about the same component as FIG. 4, and the description is abbreviate | omitted.

  In FIG. 1, 20 is a first reactor and 21 is a second reactor. These first and second reactors 20 and 21 are reactors having the same characteristics, and are attached to the partition plate 11 of the outdoor unit so that the top plates face each other as shown in FIG. Thereafter, the electric wires are connected to the terminals of the reactor (not shown) so that currents flow through these transformers 20 and 21 in opposite directions.

  When the outdoor unit installed as described above is operated, the value of the current flowing through the reactors 20 and 21 varies depending on the load, but even if the value increases, the magnetic fields generated around the coils conflict. The magnetic field leaking from the inside of the outdoor unit to the outside of the outdoor unit can be weakened.

(Embodiment 2)
Next, FIG. 2 is an exploded perspective view of the outdoor unit of the air conditioner for explaining attachment of the reactor in the second embodiment of the present invention.

  In the present embodiment, contrary to the first embodiment, the reactors 22 and 23 are attached to the partition plate 11 of the outdoor unit so as to face each other. Also in this case, as in the first embodiment, the electric wires are connected to the terminals of the reactors (not shown) so that currents flow through the windings of the reactors 22 and 23 in opposite directions.

  When the outdoor unit installed as described above is operated, the value of the current flowing through the reactors 22 and 23 varies depending on the load, but even if the value increases, the magnetic fields generated around the coils conflict. The magnetic field leaking from the inside of the outdoor unit to the outside of the outdoor unit can be weakened.

  The air conditioner reactor mounting method according to the present invention can cancel out the magnetic field generated in the reactor and suppress leakage to the outside, so that it can be applied to electrical equipment such as microwave ovens that require electromagnetic wave regulation measures such as IEC. Is also applicable.

The exploded perspective view of the outdoor unit of the air conditioner in Embodiment 1 of this invention The exploded perspective view of the outdoor unit of the air conditioner in Embodiment 2 of this invention External perspective view of reactor Exploded perspective view of a conventional air conditioner outdoor unit An exploded perspective view of an outdoor unit of another conventional air conditioner

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Partition plate 12 Control apparatus 20 Reactor 21 Reactor 22 Reactor 23 Reactor

Claims (3)

In an outdoor unit having a control device for controlling electrical components housed in a housing, at least two or more reactors constituting an electric circuit together with the control device, and a partition plate for mounting these reactors, the coils of the reactors An air conditioner characterized in that a reactor is installed on the partition plate so that the directions of the currents flowing through the plates are in opposite directions. The air conditioner according to claim 1, wherein the top plates of the reactor are installed facing each other. The air conditioner according to claim 1, wherein the bottom plates of the reactor are installed to face each other.

Images