A fan comprising: a fan housing including at least one intake part and at least two discharge parts, the at least two discharge parts comprising a first discharge part and a second discharge part; and a rotatable blower in the fan housing, the blower introducing air through the intake part and discharging the air through the discharge part (113, 115), wherein the intake part is disposed on an upper surface of the fan housing and the at least two discharge parts (113, 115) are disposed on a side surface of the fan housing, wherein a central angle between the upstream end of the selected discharge part and the downstream end of the selected discharge part adjacent in the rotation direction of the blower with respect to a rotation center of the blower is equal or less than a central angle between the upstream end of the selected discharge part and the downstream end of another of the discharge parts adjacent in the opposite direction to the rotation direction of the blower, characterised in that minimum distances between an inner surface of the fan housing and an outer surface of the blower in upstream ends of the discharge parts in a rotation direction of the blower are greater than mininum distances between the inner surface of the fan housing and the outer surface of the blower in downstream ends of the discharge parts, and the minimum distance between the inner surface of the fan housing and the outer surface of the blower in the upstream end of one of the discharge parts in the rotation direction of the blower is greater than the mininum distance between the inner surface of the fan housing and the outer surface of the blower in the downstream end of another of the discharge parts adjacent in an opposite direction to the rotation direction of the blower. a fan housing including at least one intake part and at least two discharge parts, the at least two discharge parts comprising a first discharge part and a second discharge part; and a rotatable blower in the fan housing, the blower introducing air through the intake part and discharging the air through the discharge part (113, 115), wherein the intake part is disposed on an upper surface of the fan housing and the at least two discharge parts (113, 115) are disposed on a side surface of the fan housing, wherein a central angle between the upstream end of the selected discharge part and the downstream end of the selected discharge part adjacent in the rotation direction of the blower with respect to a rotation center of the blower is equal or less than a central angle between the upstream end of the selected discharge part and the downstream end of another of the discharge parts adjacent in the opposite direction to the rotation direction of the blower, characterised in that minimum distances between an inner surface of the fan housing and an outer surface of the blower in upstream ends of the discharge parts in a rotation direction of the blower are greater than mininum distances between the inner surface of the fan housing and the outer surface of the blower in downstream ends of the discharge parts, and the minimum distance between the inner surface of the fan housing and the outer surface of the blower in the upstream end of one of the discharge parts in the rotation direction of the blower is greater than the mininum distance between the inner surface of the fan housing and the outer surface of the blower in the downstream end of another of the discharge parts adjacent in an opposite direction to the rotation direction of the blower.