Inverter unit

An inverter unit comprising component parts including at least an inverter and a filter which removes high harmonic wave component from an output of said inverter, in which:

• said component parts are housed in an aluminum box-like case having a bottom wall portion and a side wall portion;
• said filter includes first and second coils wound around first and second cores extending straight, respectively;
• said first and second coils are arranged so that central axes of said coils coincide with each other and that an end portion of said first core and an end portion of said core are adjacent to each other;
• the other end portions of said first and second cores are arranged so as to be closed to one and the other inner surfaces of said side wall portion facing each other;
• first and second plates, made of ferromagnetic material, are arranged between the other end portion of said first core and the inner surface of the side wall portion of said case opposed to the other end portion of said first core, and between the other end portion of said second core and the inner surface of the side wall portion of said case opposed to the other end portion of said second core, respectively;
• and
• said first and second plates constitute magnetic flux guiding members which guide magnetic flux coming in and out the end portions of said first and second cores so as to direct the flux to the direction along said one and the other inner surfaces of the side wall portion of said case, respectively.

An inverter unit comprising component parts including at least an inverter and a filter which removes high harmonic wave component from an output of said inverter, in which:

• said component parts are housed in an aluminum box-like case having a bottom wall portion and a side wall portion;
• said filter includes first and second coils wound around first and second cores extending straight, respectively;
• said first and second coils are arranged so that central axes of said coils coincide with each other and that an end portion of said first core and an end portion of said core are adjacent to each other;
• the other end portions of said first and second cores are arranged so as to be closed to one and the other inner surfaces of said side wall portion facing each other;
• and
• protrusions extending toward the opposite side of the bottom wall portion of said case along said one and the other inner surfaces of said side wall portion and provided at the end portions of said first and second cores opposed to said one and the other inner surfaces of the side wall portion.