Air-conditioning indoor machine

Abstract

A wall-mounted air-conditioning indoor machine includes a cross-flow fan, a casing and a heat exchanger. The casing includes a stabilizer and a rear guider. The stabilizer is divided into top and bottom parts with a tongue part in between. The stabilizer, rear guider, and cross-flow fan are arranged so that three expressions, (θa−θ 0 )> 16°, 17° <(θb−θ 0 )< 26° , and θb≧θa, are satisfied. A reference angle (θ 0 ) is formed by a fan-referencing horizontal line and a scroll-referencing line. A first angle (θa) is formed by the fan-referencing horizontal line and a first straight line connecting a fan center point and a front-surface-side closest point of the stabilizer. A second angle (θb) is formed by the fan-referencing horizontal line and a second straight line connecting the fan center point and a back-surface-side closest point of the rear guider.

1 . A wall-mounted air-conditioning indoor machine, comprising:
 a cross-flow fan arranged and configured to generate an air flow, the cross-flow fan having a plurality of blades aligned along a circumference thereof;   a casing including a stabilizer on a front-surface side and a rear guider on a back-surface side, the stabilizer being divided into a top part and a bottom part with a tongue part in between, a blown air channel being formed in the casing by the stabilizer and the rear guider, and the blown air channel having a scroll shape through which air flows from the cross-flow fan to a blow-out port; and   a heat exchanger including a front-surface-side heat exchange section and a back-surface-side heat exchange section, the heat exchanger being arranged on an airflow-upstream side of the cross-flow fan;   in a longitudinal cross-sectional view
 a horizontal line through a fan center point, which is a rotational center of the cross-flow fan, being a fan-referencing horizontal line, 
 a line designated as a scroll-referencing line being a straight line, which of any straight line tangent to a circle connecting outer ends of the plurality of fan blades of the cross-flow fan and adjoining the bottom part of the stabilizer, forms a smallest angle with the fan-referencing horizontal line, 
 an angle formed by the fan-referencing horizontal line and the scroll-referencing line being a reference angle θ 0 , 
 an angle designated as a first angle θa being an angle formed by the fan-referencing horizontal line and a first straight line, 
 which is a straight line connecting the fan center point and a front-surface-side closest point, and the front-surface-side closest point being a point on the top part of the stabilizer that is closest to the cross-flow fan, and 
 an angle designated as a second angle θb being an angle formed by the fan-referencing horizontal line and a second straight line, which is a straight line connecting the fan center point and a back-surface-side closest point, and the back-surface-side closest point being a point on the rear guider that is closest to the cross-flow fan; and 
   the stabilizer, the rear guider, and the cross-flow fan being arranged so as to satisfy
 a first angle relational expression (θa−θ 0 )>16°, 
 a second angle relational expression 17°<(θb−θ 0 )<26°, and 
 a third angle relational expression θb≧θa. 
   
     
     
         2 . The air-conditioning indoor machine according to  claim 1 , wherein,
 in the longitudinal cross-sectional view
 a lower part of the front-surface-side heat exchange section is positioned lower than the fan-referencing horizontal line, 
 a lower part of the back-surface-side heat exchange section is positioned higher than the fan-referencing horizontal line, 
 a line designated as a third straight line is a straight line which of any straight line passing through the fan center point and the lower part of the front-surface-side heat exchange section, forms a largest angle with the fan-referencing horizontal line, 
 an angle formed by the third straight line and the fan-referencing horizontal line is a third angle θc, 
 a line designated as a fourth straight line is a straight line, which of any straight line passing through the fan center point and the lower part of the back-surface-side heat exchange section, forms the smallest angle with the fan-referencing horizontal line, and 
 an angle formed by the fourth straight line and the fan-referencing horizontal line is a fourth angle θd; and 
   the stabilizer, the rear guider, the heat exchanger, and the cross-flow fan are arranged so as to satisfy
 a fourth angle relational expression θc>θa, and 
 a fifth angle relational expression θd<θb.