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US 10,648,472 B2Granted
Sound absorber for refrigerant compressor
AssigneeBITZER Kuehlmaschinenbau GmbH
InventorsDominic Kienzle, Ashraf Agha, Stephan Roelke
Life of this patent
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Abstract
In order to further improve the sound damping in a refrigerant compressor comprising a common housing, a screw-type compressor in a common housing has a compressor housing that is formed as part of the common housing with a first sound absorber unit which is arranged in the common housing. The first sound absorber unit is arranged adjacent a housing window, and the sound absorber unit comprises at least one chamber which is located between an inlet opening and an outlet opening and which widens out relative to the inlet opening and to the outlet opening in a direction transverse to a direction of flow.
Claims37
A refrigerant compressor comprising
- a common housing,
- a screw-type compressor which is provided in the common housing and has a compressor housing that is formed as part of the common housing and in which there is arranged at least one screw rotor boring, at least one screw rotor that is arranged in the screw rotor boring such as to be rotatable about a rotational axis, a suction-side bearing unit for the screw rotor that is arranged on the compressor housing, at least one pressure-side bearing unit for the screw rotor that is arranged on the compressor housing and a housing window for compressed refrigerant that is provided on the compressor housing,
- and a first sound absorber unit which is arranged in the common housing and within the refrigerant compressor,
- the first sound absorber unit is arranged after the housing window, and in that the sound absorber unit comprises at least one chamber which is located between an inlet opening and an outlet opening and which widens out relative to the inlet opening and to the outlet opening in a direction transverse to a direction of flow,
- the first sound absorber unit is in the form of a passage absorber which comprises a plurality of passage openings and a plurality of expansion chambers, each of the expansion chambers following one of the passage openings, and in that the inlet opening and the outlet opening respectively each form one of the passage openings with the plurality of expansion chambers being of differing volume, the common housing comprising a motor housing arranged on one side of the compressor housing and a pressure housing arranged on a side of said compressor housing opposite to said motor housing and the first sound absorber unit is arranged in the pressure housing of the common housing, and
- wherein a sound absorber housing and a bearing housing form parts of a combined housing for the first sound absorber unit and the pressure-side bearing unit, wherein the first sound absorber unit is disposed radially outwardly and in axially overlapping relationship with the at least one pressure-side bearing unit.
3 more elements
A refrigerant compressor comprising
- a common housing,
- a screw-type compressor which is provided in the common housing and has a compressor housing that is formed as part of the common housing and in which there is arranged at least one screw rotor boring, at least one screw rotor that is arranged in the screw rotor boring such as to be rotatable about a rotational axis, a suction-side bearing unit for the screw rotor that is arranged on the compressor housing, at least one pressure-side bearing unit for the screw rotor that is arranged on the compressor housing and a housing window for compressed refrigerant that is provided on the compressor housing,
- and a first sound absorber unit which is arranged in the common housing and within the refrigerant compressor,
- the first sound absorber unit is arranged after the housing window, and in that the sound absorber unit comprises at least one chamber which is located between an inlet opening and an outlet opening and which widens out relative to the inlet opening and to the outlet opening in a direction transverse to a direction of flow,
- the first sound absorber unit is in the form of a passage absorber which comprises a plurality of passage openings and a plurality of expansion chambers, each of the expansion chambers following one of the passage openings, and in that the inlet opening and the outlet opening respectively each form one of the passage openings with the plurality of expansion chambers being of differing volume, the common housing comprising a motor housing arranged on one side of the compressor housing and a pressure housing arranged on a side of said compressor housing opposite to said motor housing and the first sound absorber unit is arranged in the pressure housing of the common housing;
- and
- wherein a sound absorber housing and a bearing housing form parts of a combined housing, wherein the combined housing integrally provides the first sound absorber unit and houses the at least one pressure-side bearing unit, and wherein the first sound absorber unit is disposed radially outwardly and in axially overlapping relationship with the at least one pressure-side bearing unit.
4 more elements
A refrigerant compressor comprising
- a common housing,
- a screw-type compressor which is provided in the common housing and has a compressor housing that is formed as part of the common housing and in which there is arranged at least one screw rotor boring, at least one screw rotor that is arranged in the screw rotor boring such as to be rotatable about a rotational axis, a suction-side bearing unit for the screw rotor that is arranged on the compressor housing, at least one pressure-side bearing unit for the screw rotor that is arranged on the compressor housing and a housing window for compressed refrigerant that is provided on the compressor housing,
- and a first sound absorber unit which is arranged in the common housing and within the refrigerant compressor,
- the first sound absorber unit is arranged after the housing window, and in that the sound absorber unit comprises at least one chamber which is located between an inlet opening and an outlet opening and which widens out relative to the inlet opening and to the outlet opening in a direction transverse to a direction of flow,
- the first sound absorber unit is in the form of a passage absorber which comprises a plurality of passage openings and a plurality of expansion chambers, each of the expansion chambers following one of the passage openings, and in that the inlet opening and the outlet opening respectively each form one of the passage openings with the plurality of expansion chambers being of differing volume, the common housing comprising a motor housing arranged on one side of the compressor housing and a pressure housing arranged on a side of said compressor housing opposite to said motor housing and the first sound absorber unit is arranged in the pressure housing of the common housing;
- and
- wherein a sound absorber housing and a bearing housing form parts of a combined housing for the first sound absorber unit and the at least one pressure-side bearing unit, wherein the first sound absorber unit supports the at least one pressure-side bearing unit.
4 more elements
Dependencies are inferred from the claim text.