A motor assembly includes a motor and sealing member fixed to a frame. The motor includes a stator and a rotor. The stator includes a coil holding portion and a first portion with an annular shape and extending radially outward from the coil holding portion. The rotor includes a magnet and a magnet holding portion located in a first space. The first portion has a first surface in contact with the first space, and a second surface on a side opposite to the first surface. A through hole penetrates from the first surface to the second surface in the first portion. The sealing member is disposed on a side of the stator opposite to the rotor, and is fixed to the frame so a second space between the sealing member and the stator does not communicate with an external space other than the first space.

An air current changeable full front blowing type air conditioner is provided. The air current changeable full front blowing type air conditioner includes: a case configured to comprise a heat exchanger disposed inside the case; a main air blower configured to be disposed in rea of the heat exchanger inside the case and discharge a main air current from a full front of the case; and at least one auxiliary air blower configured to be positioned around the main air blower of the case and discharge an auxiliary air current for changing a direction of the main air current. The auxiliary air blower discharges the auxiliary air current in a direction where the auxiliary air current interferes with the main air current discharged from the full front of the case.

An impeller element includes a plurality of blades disposed along an outer circumference of a circular support plate. Each blade is divided into a plurality of blade sections in a rotational axis direction. At least one of the divided blade sections as a long-chord blade section is configured such that a chord as a line segment connecting a blade outer-circumferential edge and a blade inner-circumferential edge of the blade in a cross section perpendicular to a rotational axis of the blade has a greater length than a chord of another one of the blade sections as a short-chord blade section. The blade inner-circumferential edge of the at least one long-chord blade section having the longer chord protrudes toward the inner circumferential side, relative to the blade inner-circumferential edge of the at least other one of the blade sections as the short-chord blade section having the shorter chord.

A heat exchange unit includes a heat exchanger, a first drain pan, and a second drain pan. The heat exchanger is configured to cause heat to be exchanged between air and refrigerant. The first drain pan is provided so as to face the heat exchanger and has an opening through which the air flows. The second drain pan is provided so as to face the heat exchanger and is attached to the first drain pan so as to form an L shape in side view together with the first drain pan. The heat exchange unit is installed in an installation state in which the first drain pan is located below the heat exchanger or in an installation state in which the second drain pan is located below the heat exchanger. The second drain pan includes a rib on a facing surface facing the heat exchanger.

Disclosed is an air cleaner comprising: a housing (H); an air-purifying filter (20); a blowing unit (30); and a channel switching member (200) for switching a discharge channel such that air supplied from the blowing unit (30) flows to at least one of a first discharge port (A51) to discharge air in a first direction and the second discharge port (A52) to discharge air in a second direction. The channel switching member (200) comprises: an elevating member (210) having a first communication unit (216) that is open such that air flows to a first discharge port-side channel (A3), and having a blocking unit (215) for blocking a flow thereof to a second discharge port-side channel (A4); and an opening/closing member (220). The first discharge port-side channel (A3) and the second discharge port-side channel (A4) are opened/closed by ascending/descending of the elevating member (210) and moving of the opening/closing member (220).

A rotor includes a rotor core having magnet insertion holes in a number corresponding to a pole number, and a center hole. The rotor core has first slits and ribs alternately arranged in the circumferential direction along a periphery of the center hole, and second slits on an outer side with respect to the first slits in the radial direction. The first slits and the second slits are both equal in number to half or an integer multiple of the pole number. Each second slit is formed to cover the rib from an outer side in the radial direction. Each first slit has a length A1 in the circumferential direction and a width A2 in the radial direction. Each second slit has a length B1 in the circumferential direction and a width B2 in the radial direction. A1>A2, B1>B2, and A1>B1 are satisfied.

A rotor includes a rotor core having magnet insertion holes in a number corresponding to a pole number, and a center hole. The rotor core has first slits and ribs alternately arranged in the circumferential direction along a periphery of the center hole, and second slits on an outer side with respect to the first slits in the radial direction. The first slits and the second slits are both equal in number to half or an integer multiple of the pole number. Each second slit is formed to cover the rib from an outer side in the radial direction. Each first slit has a length A1 in the circumferential direction and a width A2 in the radial direction. Each second slit has a length B1 in the circumferential direction and a width B2 in the radial direction. A1>A2, B1>B2, and A1>B1 are satisfied.

A fan assembly for a heating, ventilation, and/or air conditioning (HVAC) unit includes a hub having a fan blade extending therefrom. The fan assembly includes a fan pitch adjuster configured to engage the fan blade and to adjust a pitch of the fan blade relative to the hub in response to movement of the fan pitch adjuster relative to the hub. The fan assembly also includes a motor shaft coupled to the fan pitch adjuster and to the hub, where the motor shaft is configured to drive rotation of the fan pitch adjuster and the hub. The fan assembly further includes an actuator coupled to the fan pitch adjuster and configured to axially move the fan pitch adjuster along the motor shaft and relative to the hub to adjust the pitch of the fan blade.

An air conditioner at least including a controller, a first fan unit, and a second fan unit arranged parallel to the first fan unit is disclosed. The controller performs a parallel operating control procedure, including a first control mode and a second control mode, to the first fan unit and the second fan unit respectively. When operating under the first control mode, the controller adjusts the rotating speed of one of the first fan unit and the second fan unit based on a first standard air volume, so the two fan units output the air volume equal to or approximate to the first standard air volume. When operating under the second control mode, the controller controls the rotating speed of both the first and second fan units according to a second standard air volume, so the two fan units output the same air volume.

An air conditioner at least including a controller, a first fan unit, and a second fan unit arranged parallel to the first fan unit is disclosed. The controller performs a parallel operating control procedure, including a first control mode and a second control mode, to the first fan unit and the second fan unit respectively. When operating under the first control mode, the controller adjusts the rotating speed of one of the first fan unit and the second fan unit based on a first standard air volume, so the two fan units output the air volume equal to or approximate to the first standard air volume. When operating under the second control mode, the controller controls the rotating speed of both the first and second fan units according to a second standard air volume, so the two fan units output the same air volume.