An air-sending device includes a fan and a grille provided downstream of the fan in a direction of airflow generated by the fan. The grille includes a first grille that includes a plurality of first bars spaced from each other, and a second grille that includes a plurality of second bars spaced from each other. The plurality of second bars are more densely arranged than the plurality of first bars. The second grille is provided upstream of the first grille in the direction of the airflow generated by the fan, and spaced from the first grille to face the first grille.

An air-sending device includes a propeller fan, a bell mouth surrounding an outer periphery of the propeller fan, a fan grille disposed downstream of the bell mouth and including a plurality of first crosspieces. An edge of the air outlet of the bell mouth includes a varying portion whose distance from a rotation axis of the propeller fan varies. In a cross-section of any of the plurality of first crosspieces that is perpendicular to a longitudinal direction of the any of the plurality of first crosspieces, a virtual line segment connecting an upstream side end portion and a downstream side end portion is defined as a first virtual line segment. At the portions of the plurality of first crosspieces disposed on the inner circumference side of the varying portion, the angle between a virtual line segment parallel to the rotation axis and the first virtual line segment is changed.

An air-sending device includes a propeller fan, a bell mouth surrounding an outer periphery of the propeller fan, a fan grille disposed downstream of the bell mouth and including a plurality of first crosspieces. An edge of the air outlet of the bell mouth includes a varying portion whose distance from a rotation axis of the propeller fan varies. In a cross-section of any of the plurality of first crosspieces that is perpendicular to a longitudinal direction of the any of the plurality of first crosspieces, a virtual line segment connecting an upstream side end portion and a downstream side end portion is defined as a first virtual line segment. At the portions of the plurality of first crosspieces disposed on the inner circumference side of the varying portion, the angle between a virtual line segment parallel to the rotation axis and the first virtual line segment is changed.

Disclosed is an air conditioner that suppresses generation of leakage vortices between a fan and a shroud. An air conditioner according to an embodiment of the present invention includes: an axial fan for blowing air; a shroud partially surrounding a circumference of the axial fan to guide air blown by the axial fan; and a fence ring provided in an inner surface of the shroud and protruding in a radial direction from the inner surface of the shroud. In addition, the fence ring is disposed between a downstream end of the axial fan and a downstream end of the shroud.

A centrifugal blower having high efficiency and reduced noise is provided. A centrifugal blower to be accommodated in a housing having an air inlet includes a spiral casing having a bell mouth and a centrifugal fan housed in the casing. The bell mouth includes a first region and a second region. The first region is disposed closest to the air inlet. A distance from a rotational axis of the centrifugal fan to a downstream end in the first region is greater than a distance from the rotational axis to the downstream end in the second region. A curvature of a surface of the first region in a cross section including the rotational axis is smaller than a curvature of a surface of the second region in a cross section including the rotational axis.

A centrifugal blower having high efficiency and reduced noise is provided. A centrifugal blower to be accommodated in a housing having an air inlet includes a spiral casing having a bell mouth and a centrifugal fan housed in the casing. The bell mouth includes a first region and a second region. The first region is disposed closest to the air inlet. A distance from a rotational axis of the centrifugal fan to a downstream end in the first region is greater than a distance from the rotational axis to the downstream end in the second region. A curvature of a surface of the first region in a cross section including the rotational axis is smaller than a curvature of a surface of the second region in a cross section including the rotational axis.

An air conditioner outdoor device isolation structure includes a foot and a vibration isolation member. The foot includes a mounting hole. The vibration isolation member includes a first end part, a connection part, and a second end part connected in sequence, and a connection hole penetrating the first end part, the connection part, and the second end part. The connection part is located in the mounting hole, and the first end part and the second end part are located on opposite sides of the mounting hole.

An air conditioner outdoor device isolation structure includes a foot and a vibration isolation member. The foot includes a mounting hole. The vibration isolation member includes a first end part, a connection part, and a second end part connected in sequence, and a connection hole penetrating the first end part, the connection part, and the second end part. The connection part is located in the mounting hole, and the first end part and the second end part are located on opposite sides of the mounting hole.

A refrigeration cycle apparatus has a compressor disposed via a bottom member of a housing, a second elastic member, a base, and a first elastic member. A first electric component that drives a motor for the compressor and a second electric component that performs another control are fixed to the base and disposed. The base has an upper surface that contacts the first elastic member and a lower surface that contacts the second elastic member. The first electric component and the second electric component are fixed to the upper surface directly or indirectly via a substrate and/or an electric-component casing. Top portions of the first electric component and the second electric component are lower than a top portion of the compressor.

A sound insulation assembly, and an air conditioner having same, to solve the problem of poor sound insulation. The sound insulation assembly of the air conditioner includes a housing and a cover; an accommodation space to accommodate a compressor assembly is formed in the housing; the top of the housing is covered with the cover; a sound insulation chamber is defined by the cover and the accommodation space; the compressor assembly is arranged in the sound insulation chamber; the sound insulation assembly further includes a first sealing component; the first sealing component is arranged on contact areas of the housing and the cover for sealing. The compressor assembly is arranged so that noise generated by operating of the compressor assembly can be better insulated in the sound insulation chamber.