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US 2026/0298248 A1Published application
Pump unit
AssigneeEbara Corporation
InventorHiroyuki KAWASAKI
Life of this patent
Estimating the term…
Abstract
The present invention relates to a pump unit. The pump unit (PU) includes a connector (400) configured to connect a plurality of motor pumps (MP). The connector (400) connects a front-stage side discharge casing (22) and a rear-stage side suction casing (21).
Claims11
A pump unit, comprising:
- a plurality of motor pumps comprising a front-stage side motor pump and a rear-stage side motor pump;
- and
- a connector configured to connect the motor pumps,
- wherein each of the motor pumps comprises:
- an impeller;
- a rotor fixed to the impeller;
- a stator arranged radially outward of the rotor;
- and
- a bearing configured to support the impeller,
- wherein the rotor and the bearing are arranged in a suction side region of the impeller,
- wherein the connector is configured to connect a front-stage side discharge casing of the front-stage side motor pump and a rear-stage side suction casing of the rear-stage side motor pump,
- wherein the connector comprises a suction casing connector integrally configured with the rear-stage side suction casing, and
- wherein the suction casing connector comprises a cylindrical attachment portion that is inserted into or face-connected to an outlet of the front-stage side discharge casing.
10 more elements
A pump unit, comprising:
- a plurality of motor pumps comprising a front-stage side motor pump and a rear-stage side motor pump;
- and
- a connector configured to connect the motor pumps,
- wherein each of the motor pumps comprises:
- an impeller;
- a rotor fixed to the impeller;
- a stator arranged radially outward of the rotor;
- and
- a bearing configured to support the impeller,
- wherein the rotor and the bearing are arranged in a suction side region of the impeller, and
- wherein the connector comprises an intermediate casing connector that integrally configures a front-stage side discharge casing of the front-stage side motor pump and a rear-stage side suction casing of the rear-stage side motor pump.
8 more elements
A pump unit, comprising:
- a plurality of motor pumps comprising a front-stage side motor pump and a rear-stage side motor pump;
- and
- a connector configured to connect the motor pumps,
- wherein each of the motor pumps comprises:
- an impeller;
- a rotor fixed to the impeller;
- a stator arranged radially outward of the rotor;
- and
- a bearing configured to support the impeller,
- wherein the rotor and the bearing are arranged in a suction side region of the impeller,
- wherein a front-stage side discharge casing of the front-stage side motor pump has an outlet having a first diameter,
- wherein a rear-stage side suction casing of the rear-stage side motor pump has an inlet having a second diameter different from the first diameter, and
- wherein the connector comprises:
- a front-stage side connection portion connected to the outlet;
- and
- a rear-stage side connection portion connected to the inlet and having a different size from that of the front-stage side connection portion.
13 more elements
A pump unit, comprising:
- a plurality of motor pumps comprising a front-stage side motor pump and a rear-stage side motor pump;
- and
- a connector configured to connect the motor pumps,
- wherein each of the motor pumps comprises:
- an impeller;
- a rotor fixed to the impeller;
- a stator arranged radially outward of the rotor;
- and
- a bearing configured to support the impeller,
- wherein the rotor and the bearing are arranged in a suction side region of the impeller,
- wherein a front-stage side discharge casing of the front-stage side motor pump has a discharge port extending in a direction of a center line of the front-stage side motor pump, and the discharge port having an outlet opening in a direction perpendicular to the direction of the center line, and
- wherein the connector is configured to connect the discharge port and a rear-stage side suction casing of the rear-stage side motor pump.
9 more elements
Dependencies are inferred from the claim text.