Abstract: A ceiling embedded type air conditioner is embedded in a ceiling surface and includes an outlet that blows out air conditioned air toward an indoor space, and a louver capable of changing a blow-out vertical direction of the air conditioned air at the outlet. If a state in which a wind direction position of the louver is set so that it is oriented to a wind direction position continues for a first prescribed time or longer, then the louver is temporarily changed to a wind direction position more downward than the wind direction position, and once again changed to the wind direction position.

Abstract: A drain pump is provided that reduces the operating noise when the head is low. The drain pump has a pump casing, and an impeller. The pump casing has a drain inlet for sucking in drain water at a lower end part and a drain outlet for discharging drain water at a side part. The impeller has a shaft part extending in a vertical direction inside the pump casing, a main blade disposed on the outer circumferential side of the shaft part, an auxiliary blade disposed on the lower side of the main blade, and a disc shaped dish part disposed between the main blade and the auxiliary blade. The dish part has an annular partition part extending upward from the outer circumferential edge part of the main blade, which is disposed at a position lower than the upper end part of the partition part.

Abstract: In the vicinity of a suction port of a drain pump in a drain pan of an air conditioner, an antibacterial agent unit having an antibacterial agent capable of being brought into contact with drain water is disposed so that the antibacterial agent unit disposed in the vicinity of the suction port of the drain pump at the lowest portion in the drain pan is reliably immersed into the drain water when the drain pump is operating and not operating.

Abstract: An impeller of a centrifugal fan includes an end plate, a plurality of blades and an end ring. The blades include blade bodies that are annularly disposed around a shaft and fixed to the end plate. The blades further include blade covers that are attached to the blade bodies. The blade covers and the blade bodies form a hollow space. The end ring is disposed such that it sandwiches the plural blades between itself and the end plate in a shaft direction. The blade covers form at least part of negative-pressure surfaces.

Abstract: A ceiling embedded type air conditioner that reduces short circuits without increasing drafts due to air currents blown out from outlets includes a casing and a fan. The casing includes a casing lower part formed by an alternating sequence of four panel side parts and four panel corner parts. The casing further includes four main outlet passageways along the panel side parts auxiliary outlet passageways in the three panel corner parts and an inlet so that is surrounded by all of the panel side parts. The auxiliary outlet passageways are formed so that the spacing between each auxiliary outlet passageways and a corresponding adjacent main outlet passageways satisfies a prescribed dimensional relationship.

Abstract: An air conditioner principally includes a casing having a casing lower part formed by an alternating sequence of four panel side parts and four corner parts. The casing further has main outlets disposed along each of the panel side parts, and auxiliary outlets disposed at the corner parts. The air conditioner further includes horizontal flaps rotatable supported about longitudinal axes of the main outlets. A circumferential edge part of each of the auxiliary outlets is formed so that the air from each of the auxiliary outlets is blown out in a fixed direction.

Abstract: A drain pump is provided that reduces the operating noise when the head is low. The drain pump has a pump casing, and an impeller. The pump casing has a drain inlet for sucking in drain water at a lower end part and a drain outlet for discharging drain water at a side part. The impeller has a shaft part extending in a vertical direction inside the pump casing, a main blade disposed on the outer circumferential side of the shaft parts, an auxiliary blade disposed on the lower side of the main blade, and a disc shaped dish part disposed between the main blade and the auxiliary blade. The dish part has an annular partition part extending upward from the outer circumferential edge part of the main blade, which is disposed at a position lower than the upper end part of the partition part.

Abstract: The present invention obtains a desired cooling effect in a fan motor as well as suppresses any increase in the noise level in a centrifugal fan that sucks in air from the rotary shaft direction and blows out air in a direction that intersects the rotary shaft, and in an air conditioner provided therewith. The centrifugal fan of the air conditioner comprises a fan motor, a hub, a plurality of blades, and an air guide. The hub has cooling air holes, and is coupled to and rotationally driven by a shaft of the fan motor. The air guide guides a portion of the blown out air to the vicinity of the fan motor, cools the fan motor, and then guides the air flow so that the revolving direction velocity decreases when that air is blown out from the cooling air holes to the side of the hub opposite the fan motor.