Vortex pump
AssigneeAisan Kogyo Kabushiki Kaisha
InventorEiji Nakamura
Life of this patent
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Abstract
A vortex pump including: a housing including a suction channel, a discharge channel, and a housing space communicating with the suction channel and the discharge channel; and an impeller housed in the housing space and configured to rotate about a rotation axis, where the housing includes an inner channel along an outer circumference of the impeller in the housing space, and a channel cross-sectional area of the inner channel is larger than a channel cross-sectional area of the suction channel and is larger than a channel cross-sectional area of the discharge channel over an entire length of the inner channel.
Claims5
A vortex pump comprising:
- a housing comprising a suction channel, a discharge channel, and a housing space communicating with the suction channel and the discharge channel;
- and
- an impeller housed in the housing space and configured to rotate about a rotation axis, wherein
- the housing comprises an inner channel along an outer circumference of the impeller in the housing space, and
- a channel cross-sectional area of the inner channel is larger than a channel cross-sectional area of the suction channel and is larger than a channel cross-sectional area of the discharge channel over an entire length of the inner channel, wherein
- the housing comprises one or more opposing grooves extending along a rotation direction of the impeller, each of the one or more opposing grooves comprising the inner channel,
- each of the one or more opposing grooves has a constant depth at an intermediate position excluding both ends of the opposing groove in the rotation direction of the impeller, and
- each of the one or more opposing grooves becomes shallower toward the suction channel and the discharge channel at the both ends of the opposing groove respectively.
Dependencies are inferred from the claim text.