US 12,741,252 B2 · Fine bubble generator, water heater, and dishwasher

Abstract

The utility model provides a little bubble device, this little bubble device includes: a body has an entry, an export, one lies in the venturi tube mechanism between this entry and this export, and this venturi tube mechanism has a neck that feeds through the external world, a bubble refines the mechanism, has the passageway that an at least cross-section is lighter than the cross-section of this entry, and an at least passageway feeds through between this venturi tube mechanism and export, the body still includes a cylinder part, this venturi tube mechanism holding in this cylinder part, this cylinder part pass through be equipped with one with the air inlet hole of neck intercommunication. The utility model discloses a little bubble device can provide very careful and careful foam water stream.

A fine bubble generator comprising:

an inlet into which gas-dissolved water in which gas is dissolved flows;
an outlet out of which the gas-dissolved water flows;
a first fine bubble generation portion disposed between the inlet and the outlet;
and
a second fine bubble generation portion disposed between the first fine bubble generation portion and the outlet,
wherein the first fine bubble generation portion comprises:
a venturi portion including a diameter-reducing flow path and a diameter-increasing flow path disposed downstream of the diameter-reducing flow path, wherein the diameter-reducing flow path reduces its flow path diameter from upstream to downstream, and the diameter-increasing flow path increases its flow path diameter from upstream to downstream,
the second fine bubble generation portion comprises
a plurality of swirling flow generation portions disposed along a downstream-side central axis direction of the second fine bubble generation portion,
wherein each of the plurality of swirling flow generation portions comprises:
a shaft portion extending along the downstream-side central axis direction;
an outer peripheral portion surrounding the shaft portion;
and
a plurality of vanes disposed between the shaft portion and the outer peripheral portion and configured to generate a swirling flow flowing in a predetermined swirling direction with respect to the shaft portion,
wherein when a swirling direction opposite to the predetermined swirling direction is termed a reversed swirling direction,
in each of the plurality of vanes of the swirling flow generation portions, a swirling-direction-side end of a specific vane among the plurality of vanes is located more on a reversed swirling direction side than a reversed swirling-direction-side end of an adjacent vane adjacent to the specific vane in the predetermined swirling direction,
when each of the swirling flow generation portions is seen along the downstream-side central axis direction, each of the swirling flow generation portions comprises a plurality of first openings,
when each of the swirling flow generation portions is seen along the downstream-side central axis direction, each of the plurality of first openings is surrounded by the swirling direction-side-end of the specific vane, the reversed swirling-direction-side end of the adjacent vane, the shaft portion, and the outer peripheral portion, and
when the second fine bubble generation portion is seen along the downstream-side central axis direction, each of the plurality of vanes of a downstream-side swirling flow generation portion among the plurality of swirling flow generation portions is located to overlap at least a part of a corresponding first opening among the plurality of first openings of an upstream-side swirling flow generation portion, the downstream-side swirling flow generation portion being different from a swirling flow generation portion disposed on a most upstream side, and the upstream-side swirling flow generation portion being adjacent to the downstream side swirling flow generation portion on an upstream side of the downstream-side swirling flow generation portion.

16 more elements

Fine bubble generator, water heater, and dishwasher

Life of this patent

Fine bubble generator, water heater, and dishwasher

Life of this patent

Abstract

Claims18