Fluid pump with integrated cowling and discharge muffler
AssigneeAgilent Technologies, Inc.
InventorsVannie Lu, George Galica
Life of this patent
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Abstract
A discharge muffler for a fluid pump is formed by a cowling and a muffler insert configured to be removably inserted into a muffler receptacle of the cowling. The muffler insert includes a muffler inlet, a muffler outlet, and a plurality of muffler walls. The pump includes a pumping stage, a motor, and a drive shaft coupled between the pumping stage and the motor. When the muffler insert is inserted into the muffler receptacle, the muffler inlet communicates with the pumping stage, and the cowling and the muffler insert cooperatively define the discharge muffler. The discharge muffler is configured or effective to suppress noise generated by fluid discharged from the pumping stage.
Claims23
A fluid pump, comprising:
- a pump head comprising a pump housing and a pumping stage, wherein the pumping stage comprises a pumping stage inlet, a pumping stage outlet, a pump stator positioned inside the pump housing, and a movable pump element positioned inside the pump housing,
- wherein the movable pump element is configured to be driven by a motor to drive a pumping action of the pumping stage, such that the pumping stage pumps a fluid from the pumping stage inlet to the pumping stage outlet;
- a cowling removably mountable to the pump head and separate from the pump housing, the cowling comprising a cowling wall and a muffler receptacle, wherein the cowling wall encloses a cowling interior and at least a portion of the muffler receptacle, and the cowling wall and the muffler receptacle are positioned outside the pump housing;
- and
- a muffler insert comprising a muffler inlet, a muffler outlet, and a plurality of muffler walls, wherein the muffler insert is configured to be removably inserted into the muffler receptacle and is removable from the muffler receptacle without disassembling the pump head,
- wherein, when the muffler insert is inserted into the muffler receptacle, the cowling wall and the muffler insert cooperatively define an assembled discharge muffler positioned outside the pump housing and configured to suppress noise generated by fluid discharged from the pumping stage outlet.
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A fluid pump, comprising:
- a pump head comprising a pump housing and a pumping stage, wherein the pumping stage comprises a pumping stage inlet, a pumping stage outlet, a pump stator positioned inside the pump housing, and a movable pump element positioned inside the pump housing, and wherein the pumping stage is configured to pump a fluid from the pumping stage inlet to the pumping stage outlet;
- a motor;
- a drive shaft coupled to the movable pump element and configured to be driven by the motor to drive a pumping action of the pumping stage;
- a cowling removably mountable to the pump head, the cowling comprising a cowling wall and a muffler receptacle, wherein the cowling wall encloses a cowling interior and at least a portion of the muffler receptacle, and the cowling wall and the muffler receptacle are positioned outside the pump housing;
- and
- a muffler insert comprising a muffler inlet, a muffler outlet, and a plurality of muffler walls, wherein the muffler insert is configured to be removably inserted into the muffler receptacle and is removable from the muffler receptacle without disassembling the pump head, and wherein:
- when the muffler insert is inserted into the muffler receptacle, the cowling wall and the muffler insert cooperatively define a discharge muffler positioned outside the pump housing configured to suppress noise generated by fluid discharged from the pumping stage outlet;
- and
- when the muffler insert is inserted into the muffler receptacle and the cowling is mounted to the pump head, the muffler inlet communicates with the pumping stage outlet.
Dependencies are inferred from the claim text.