Centrifugal compressor with reverse overhung volute
AssigneeDaikin Industries, Ltd.
InventorMidori Drake
Life of this patent
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Abstract
A centrifugal compressor for a chiller includes an inlet guide vane; an impeller, a diffuser, a volute forming member, a compressor housing, and an insert. The volute forming member is disposed downstream of the diffuser. The volute forming member forms a volute to receive a refrigerant after the refrigerant has been compressed. The volute has a reverse overhung configuration. The compressor housing encloses the impeller. The insert is disposed around an outer periphery of the impeller and interposed between the volute forming member and the compressor housing. The insert includes a diffuser defining wall surface that opposes an inner surface of the volute forming member. The diffuser is defined between the volute forming member and the diffuser defining wall surface.
Claims8
A centrifugal compressor for a chiller comprising:
- an inlet guide vane;
- an impeller;
- a motor arranged to drive the impeller, the motor including a motor housing;
- a diffuser;
- a volute forming member disposed downstream of the diffuser and forming a volute to receive a refrigerant after the refrigerant has been compressed, the volute having a reverse overhung configuration;
- a compressor housing enclosing the impeller;
- and
- an insert disposed around an outer periphery of the impeller and interposed between the volute forming member and the compressor housing,
- the insert including a diffuser defining wall surface that opposes an inner surface of the volute forming member,
- the diffuser being defined between the volute forming member and the diffuser defining wall surface,
- the motor housing being disposed on a discharge side of the compressor housing, and
- at least a portion of the volute overlapping the motor housing when viewed along a direction perpendicular to an axial direction of the centrifugal compressor.
Dependencies are inferred from the claim text.