Abstract: An indoor unit is equipped with a housing having an inlet opening and an outlet opening, a propeller fan disposed in an air passage interconnecting the inlet opening and the outlet opening, a heat exchanger disposed downstream from the propeller fan, and a lateral airflow direction changing plate that is disposed downstream from the heat exchanger and that changes an airflow direction laterally. The heat exchanger is a fin-and-tube type heat exchanger equipped with a plurality of fins and a plurality of heat transfer tubes passing through the fins. The lateral airflow direction plate has slits in an airflow downstream region that is downstream from the heat transfer tubes.

Abstract: In an axial flow fan according to the present invention, a plurality of blades rotate about a rotation axis of the blades to convey a fluid. In the axial flow fan, the plurality of blades each have a leading edge at a leading side in a rotational direction, a trailing edge at a trailing side in the rotational direction, and an outer peripheral edge connecting the leading edge and the trailing edge. The leading edge of one of the plurality of blades and the trailing edge of another blade adjacent to the leading edge of the blade in the rotational direction are connected by a plate-shaped connection portion. The plurality of blades each have at least one plate-shaped reinforcement rib extending from a periphery of the rotation axis toward the outer peripheral edge of the blade.

Abstract: A blade included in an impeller is formed so that, when viewed in a vertical cross-sectional view of the blade, a pressure surface of the blade and a suction surface of the blade opposite to the pressure surface are curved more in the direction in which the impeller rotates, in their areas farther from the axis of rotation of the impeller and closer to the exterior of the blade, and are arched so that a portion near the center of the blade is most distant from a straight line connecting the inner end and the outer end of the blade, the pressure surface and the suction surface form a curved surface including at least one circular arc, and a straight portion of the blade is formed to be connected to the curved surface on its one side, and extend toward the inner end of the blade on its other side.

Abstract: An indoor unit for an air-conditioning unit that can prevent dew condensation on an air-flow-direction control plate in a vicinity of a heat exchanger, and includes a casing, an air inlet on the casing, an air outlet opening in a bottom surface of the casing, a heat exchanger in an air passage extending from the air inlet to the air outlet, a fan on a windward side of the heat exchanger in the air passage, and an air -flow-direction control plate in the air passage between the heat exchanger and the air outlet. The heat exchanger includes a plurality of heat exchanger blocks arranged in a front-and-rear direction of the casing, and includes a refrigerant inlet through which refrigerant flows into the heat exchanger, and a refrigerant outlet through which the refrigerant flows out of the heat exchanger.

Abstract: A stabilizer has a tip portion at a boundary between the stabilizer and a nozzle, and a projection on the lower side of the tip portion, and a first recess is formed between the projection and the tip portion in a continuously recessed shape in the longitudinal direction of the cross flow fan.

Abstract: In an axial flow fan according to the present invention, a plurality of blades rotate about a rotation axis of the blades to convey a fluid. In the axial flow fan, the plurality of blades each have a leading edge at a leading side in a rotational direction, a trailing edge at a trailing side in the rotational direction, and an outer peripheral edge connecting the leading edge and the trailing edge. The leading edge of one of the plurality of blades and the trailing edge of another blade adjacent to the leading edge of the blade in the rotational direction are connected by a plate-shaped connection portion. The plurality of blades each have at least one plate-shaped reinforcement rib extending from a periphery of the rotation axis toward the outer peripheral edge of the blade.

Abstract: In an indoor unit for an air-conditioning apparatus, a casing has an air inlet formed in an upper part and an air outlet formed below a front part. The casing accommodates a heat exchanger and fan. A horizontal airflow-direction louver is mounted pivotally inside the air outlet to guide airflow in a horizontally changeable manner. A vertical airflow-direction louver is mounted to cover the air outlet in a closed position and to guide airflow in a vertically changeable manner. An infrared sensor projects downward from the casing at a position in a horizontal end portion of the casing and in front of the air outlet. An airflow blocking portion is located behind the infrared sensor, and has a side wall on or beside one edge of the air outlet. The side wall is located closer to a center of the air outlet in the horizontal direction than the infrared sensor.

Abstract: The air-conditioning-apparatus indoor unit includes a main body that has an air inlet and an air outlet that accommodates a heat exchanger and a fan, left-right deflectors that are arranged in the air outlet and are configured to change the direction of an air flow from the air outlet in a left-right direction, up-down deflectors that are arranged in the air outlet and are configured to change the direction of the air flow from the air outlet in an up-down direction, the infrared sensor disposed at one end in the left-right direction of the front surface of the main body, and a large air flow control plate, a small air flow control plate, and an upper air flow control plate that are arranged between the infrared sensor and one end of the left-right deflector close to the infrared sensor and that control the air flow from the air outlet.

Abstract: A cross flow fan achieves low power input and low noise level by preventing flow separation on an air inlet side and reducing a maximum air velocity in the gap between the blades. At least one of units constituting a cross flow fan is an appearance unit configured such that when the unit is sequentially cut in a direction from one of rings to the other ring along a plane whose normal coincides with a rotation axis, a region S and a region C appear, the radius of a second circle, serving as an inner circumferencial circle (having a radius), in the region S being a first radius of predetermined length, the radius of the second circle, serving as the inner circumferencial circle, in the region C being a second radius shorter than the first radius.

Abstract: An indoor unit for an air-conditioning apparatus includes: a casing having an air inlet formed in an upper part of the casing and an air outlet formed below a front part of the casing, the casing accommodating therein a heat exchanger and a fan; at least one horizontal airflow-direction louver mounted pivotally inside the air outlet to guide airflow through the air outlet in a horizontally changeable manner; at least one vertical airflow-direction louver mounted to cover the air outlet in a closed position and to guide airflow through the air outlet in a vertically changeable manner; an infrared sensor projecting downward from the casing at a position in a horizontal end portion of the casing and in front of the air outlet; and at least one airflow blocking portion located behind the infrared sensor, the at least one airflow blocking portion having a side wall on or beside one edge of the air outlet, the side wall located closer to a center of the air outlet in the horizontal direction than the infrared senso

Abstract: A cross-flow fan, a heat exchanger provided so as to surround an upper side and a front side of the cross-flow fan, and a nozzle which is located at a lower side of the front heat exchanger located at the front side of the cross-flow fan and is provided to face the cross-flow fan, are included. The nozzle includes a drain pan which receives dew condensation water generated at the heat exchanger and a drain groove into which the dew condensation water flows.

Abstract: A stabilizer has a tip portion at a boundary between the stabilizer and a nozzle, and a projection on the lower side of the tip portion, and a first recess is formed between the projection and the tip portion in a continuously recessed shape in the longitudinal direction of the cross flow fan.

Abstract: A blade included in an impeller is formed so that, when viewed in a vertical cross-sectional view of the blade, a pressure surface of the blade and a suction surface of the blade opposite to the pressure surface are curved more in the direction in which the impeller rotates, in their areas farther from the axis of rotation of the impeller and closer to the exterior of the blade, and are arched so that a portion near the center of the blade is most distant from a straight line connecting the inner end and the outer end of the blade, the pressure surface and the suction surface form a curved surface including at least one circular arc, and a straight portion of the blade is formed to be connected to the curved surface on its one side, and extend toward the inner end of the blade on its other side.

Abstract: A cross flow fan achieves low power input and low noise level by preventing flow separation on an air inlet side and reducing a maximum air velocity in the gap between the blades. At least one of units constituting a cross flow fan is an appearance unit configured such that when the unit is sequentially cut in a direction from one of rings to the other ring along a plane whose normal coincides with a rotation axis, a region S and a region C appear, the radius of a second circle, serving as an inner circumferencial circle (having a radius), in the region S being a first radius of predetermined length, the radius of the second circle, serving as the inner circumferencial circle, in the region C being a second radius shorter than the first radius.

Abstract: The present invention provides indoor unit of air conditioner including a plurality of heat-exchangers, main-unit casing that accommodates heat-exchangers and includes suction air duct extending from air inlet to heat-exchangers and blowout air duct extending from heat-exchangers to air outlet, and air blower that is provided in blowout air duct and blows out air taken in from air inlet, from air outlet after having air passed through heat-exchangers.

Abstract: To provide an air conditioner capable of reducing an input power and a rotational speed of a fan motor necessary for obtaining a predetermined flow rate from an indoor unit. An air conditioner includes an indoor unit 8 having at least one inlet 6 and one outlet 8; a cross-flow fan 1 connected to a fan motor; a front heat exchanger 2; and a back heat exchanger 3, wherein an installation angle ? of the front heat exchanger 2 positioned above the rotational center of the cross-flow fan 1 relative to the horizon is 65°???90°, a point of the back heat exchanger 3 closest to the front heat exchanger 2 is located adjacent to the front heat exchanger 2 from the rotational center of the cross-flow fan 1, and an outlet angle ?2 of a blade of the cross-flow fan 1 is 22°??2?28°.