A refrigeration cycle apparatus (1) is capable of performing a refrigeration cycle using a small-GWP refrigerant. The refrigeration cycle apparatus (1) includes a refrigerant circuit (10) and a refrigerant enclosed in the refrigerant circuit (10). The refrigerant circuit includes a compressor (21), a condenser (23), a decompressing section (24), and an evaporator (31). The refrigerant contains at least 1,2-difluoroethylene.

An outdoor unit includes a motor and a heat exchanger. The motor includes a rotor, a stator, and a heat dissipation member. The rotor is rotatable about an axis, and has a rotor core and a permanent magnet attached to the rotor core. The permanent magnet forms a magnet magnetic pole. A part of the rotor core forms a virtual magnetic pole. The stator surrounds the rotor from outside in a radial direction about the axis. The heat dissipation member is disposed on a side of the stator in a direction of the axis. The heat exchanger is disposed to face the heat dissipation member in the direction of the axis.

An outdoor unit includes a motor and a heat exchanger. The motor includes a rotor, a stator, and a heat dissipation member. The rotor is rotatable about an axis, and has a rotor core and a permanent magnet attached to the rotor core. The permanent magnet forms a magnet magnetic pole. A part of the rotor core forms a virtual magnetic pole. The stator surrounds the rotor from outside in a radial direction about the axis. The heat dissipation member is disposed on a side of the stator in a direction of the axis. The heat exchanger is disposed to face the heat dissipation member in the direction of the axis.

The present disclosure is to reduce a blowing resistance while securing a mechanical strength of a fan guard. An outdoor unit 100 includes a housing 10 in which an air discharge port X is formed on an upper wall 11, a blowing fan 20 disposed inside the housing 10 to correspond to the air discharge port X, and a fan guard 30 configured to cover the blowing fan 20, wherein the fan guard 30 includes a plurality of annular ribs 32 disposed to be spaced apart from each other in a radial direction of the blowing fan 20, and radial ribs 33 configured to connect a plurality of the annular ribs 32, and wherein the radial ribs 33 are formed such that free ends 3a thereof are bent in the same direction in a cross section orthogonal to a stretching direction and a pair of opposing piece portions 3b including each of the free ends 3a are in surface contact with each other.

A heat-radiation apparatus includes a housing and a plurality of heat-radiation modules which are aligned in a vertically-slanted manner with a predetermined inclination angle to a vertical line in the housing. A plurality of heat-radiation modules includes a plurality of heat exchangers which is aligned together in parallel and equipped with a plurality of fans to parallelize axial lines thereof with each other. In a manufacturing method of the heat-radiation apparatus, the number of heat-radiation modules is adjusted according to a radiation amount which is determined in advance.

A motor includes a rotor having a shaft, a rotor core, and a permanent magnet, and a stator surrounding the rotor. The permanent magnet forms a magnet magnetic pole, a part of the rotor core forms a virtual magnetic pole. The motor includes first and second bearings support the shaft, and further includes first and second bearing support portions. Of the first and second bearings, the first bearing is located on the load side. A distance D1 from the center axis to the inner circumferential surface of the first bearing support portion, a distance D2 from the center axis to the inner circumferential surface of the second bearing support portion, a distance d1 from the center axis to the outer circumferential surface of the first bearing, and a distance d2 from the center axis to the outer circumferential surface of the second bearing satisfy D1−d1<D2−d2.

Disclosed are a fan apparatus and an air conditioner outdoor unit. The fan apparatus includes: a first wind wheel and a second wind wheel, axially arranged in an interval. A spacing S1 between the first wind wheel and the second wind wheel satisfies S1<(H1+H2)/2, where H1 is a length of the first wind wheel along the axial direction, and H2 is a length of the second wheel along the axial direction.

Disclosed are a fan apparatus and an air conditioner outdoor unit. The fan apparatus includes: a first wind wheel and a second wind wheel, axially arranged in an interval. A spacing S1 between the first wind wheel and the second wind wheel satisfies S1<(H1+H2)/2, where H1 is a length of the first wind wheel along the axial direction, and H2 is a length of the second wheel along the axial direction.

An outdoor unit includes a motor. The motor includes a rotor having a rotor core and a permanent magnet fixed to the rotor core, the permanent magnet forming a magnet magnetic pole, a part of the rotor core forming a virtual magnetic pole, and a stator surrounding the rotor. The outdoor unit further includes a frame holding the motor, a support body supporting the frame, a unit housing in which the frame and the support body are housed, and a nonmagnetic body disposed between the support body and the unit housing.

An outdoor unit includes a motor. The motor includes a rotor having a rotor core and a permanent magnet fixed to the rotor core, the permanent magnet forming a magnet magnetic pole, a part of the rotor core forming a virtual magnetic pole, and a stator surrounding the rotor. The outdoor unit further includes a frame holding the motor, a support body supporting the frame, a unit housing in which the frame and the support body are housed, and a nonmagnetic body disposed between the support body and the unit housing.