JP2011141118A5 - - Google Patents

Description

According to this configuration, since the blowing path can be subdivided, the blowing sound of the blowing means is difficult to diffuse, the noise radiated into the room is reliably reduced, and a sufficient silencing effect can be obtained. Become. More preferably, the width of the section is 85 mm or less. According to this configuration, the width of the section is about ½ wavelength or less of a sound wave of 2,000 Hz, and the sound wave passing through the section can be regarded as a substantially plane wave, that is, the inside of the section as a one-dimensional sound field, In particular, a sufficient silencing effect can be obtained in a low frequency range where active silencing at 2,000 Hz or less is good.

Claims (15)

  In an air conditioner installed on a wall surface in a room and used, a housing, a suction port provided in the housing for taking in indoor air, and conditioned air provided in the housing and harmonized by taking in from the suction port A blower outlet for sending air into the room, a blower means for moving air from the suction port to the blower outlet, and a blower passage for communicating between the suction port and the blower outlet, A wind direction changing means and a sounding means are provided in the vicinity of the air outlet, and further provided with a plurality of vertical louvers at the outlet, the sounding means is arranged for each section divided by the vertical louvers, and the wind direction changing means is operated. A duct-shaped air outlet passage is formed in the vicinity of the air outlet, and sound waves for canceling operation noise including the air blowing sound of the air blowing means are radiated from the sound generating means to the duct air outlet passage. Air conditioner and butterflies.   The wind direction changing means is a wind guide panel that is rotatable up and down to open and close the air outlet, and the wind guide panel rotates so as to be opened upward when forming the duct-shaped air outlet passage, The air conditioner according to claim 1, wherein the air conditioner is disposed so as to extend a lower surface of the air blowing path while covering the air outlet.   The wind direction changing means is a wind guide panel that is rotatable up and down to open and close the air outlet, and the air guide panel rotates to open downward when forming the duct-shaped air passage, The air conditioner according to claim 1, wherein the air conditioner is disposed so as to extend an upper surface of the air blowing path while covering the air outlet.   The air conditioner according to claim 3, further comprising an auxiliary panel arranged so as to extend a lower surface of the blower path when forming the duct-shaped outlet passage.   The air conditioner according to any one of claims 2 to 4, wherein a length of the air guide panel in a blowing direction is longer than a height of the air outlet at a position where the speaker is installed.   The reference sound detection means for detecting the sound wave of the driving noise is provided, and the sound wave having the opposite phase to the sound wave detected by the reference sound detection means is emitted from the sound generation means. An air conditioner according to any one of the above.   The air conditioner according to claim 6, wherein the reference sound detection means is disposed upstream of the sound generation means in the duct-shaped outlet passage.   The sound detecting means for detecting the noise level after canceling the driving noise is further provided, and the sound wave emitted from the sound generating means so that the noise level detected by the sound detecting means for correction falls within a predetermined range. The air conditioner according to claim 6 or 7, wherein the air conditioner is corrected.   9. The air conditioner according to claim 8, wherein the correction sound detection means is disposed downstream of the sound generation means in the duct-shaped outlet passage. The said sound detection means for reference is arrange | positioned for every division divided | segmented by the said vertical louver, and the cancellation control of driving noise is performed independently for every said division, The any one of Claims 6-9 characterized by the above-mentioned. Air conditioner.   The air conditioner according to any one of claims 1 to 10, wherein a width of the section is 85 mm or less. 10. The air according to claim 8, wherein a plurality of the correction sound detection means are arranged so that the sound generation means is sandwiched in the blowing direction by the correction sound detection means and the reference sound detection means. Harmony machine. The air conditioner according to any one of claims 8 , 9 , and 12 , wherein a width of the section is 85 mm or less.   The air conditioner according to any one of claims 1 to 13, wherein the sounding means is arranged in the wind direction changing means. The correction sound detection means, the reference sound detection means, and the sound generation means are arranged in the wind direction changing means, and the sound generation means is sandwiched in the blowing direction by the correction sound detection means and the reference sound detection means. The air conditioner according to any one of claims 8 , 9, 12 , and 13 , characterized in that the correction sound detection means and the reference sound detection means can be switched.