Side-by-side dual pump and motor with control device

Patent metadata

Field	Value
Publication number	US-9587639-B2
Application number	US-201514718671-A
Country	US
Kind code	B2
Filing date	May 21, 2015
Priority date	May 4, 2012
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

The present pump devices provide a dual pump using two (or more) electric motors (e.g. brushless DC motors) driving the pumps independently, including integration of hydraulic and electrical components and connectors. The illustrated arrangements include an in-line single shaft version, a parallel side-by-side separate shaft version, and an inside-outside version. Each configuration includes a housing supporting formation of: shared structural support for the pumps and motors (e.g., bearings, stator, relationship of components), fluid pump and hydraulic system (e.g., fluid passageways, ports connectors) and motor electrical control (e.g., control circuitry and sensory components).

First claim

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A combination dual pump and dual motor device comprising:
a housing overmold;
first and second shafts that are parallel and non-aligned and each having an overmold-supported portion supported by the housing overmold;
a first volute attached to a first outer end of the first shaft and with the housing overmold defining at least portions of a first pump cavity at the first outer end and a first inlet to the first pump cavity and a first passageway extending from the first pump cavity to a first outlet;
a first rotor assembly operably engaging the first shaft and having a first pump impeller in the first pump cavity;
a second volute attached to a second outer end of the second shaft and with the housing overmold defining at least portions of a second pump cavity at the second outer end and a second inlet to the second pump cavity and a second fluid passageway extending from the second pump cavity to a second outlet;
a second rotor assembly operably engaging the second shaft and having a second pump impeller in the second pump cavity;
a first stator adjacent the first rotor assembly and a second stator adjacent the second rotor assembly, both the first and second stators including windings for causing independent rotation of the first rotor assembly and the second rotor assembly, respectively;
a printed circuit board mounted to the housing overmold and programmed to independently control the first and second rotor assemblies.

2. The combination dual pump and dual motor device in claim 1 , including a circuit board cover attached to the housing overmold and covering the printed circuit board.

3. The combination dual pump and dual motor device in claim 1 , including terminals operably connected to the printed circuit board and extending from the housing overmold for connection to motors control system outside the device.

4. The combination device in claim 1 , wherein the second inlet and second outlet extend in directions that are 90 degrees from each other.

5. The combination device in claim 1 , wherein the first and second inlets extend parallel to each other and extend from a same end of the device.

6. The combination device in claim 1 , wherein the first and second inlets define parallel directions, and the first and second outlet define parallel directions.

7. The combination device in claim 1 , wherein the first and second inlets extend co-linearly with the first and second shafts, respectively.

8. The combination device in claim 1 , wherein the housing overmold engages and supports the winding of both the first and second stators.

9. The combination device in claim 1 , wherein the first and second pump impellers are different sizes.

10. The combination device in claim 1 , wherein first and second inlets are different sizes.

11. The combination dual pump and dual motor device of claim 1 , wherein the housing overmold includes structure directly supporting the printed circuit board over non-pump ends of the first and second shafts opposite the first and second volutes.

12. A combination dual pump and dual motor device comprising:
a housing overmold;
first and second shafts that are parallel and non-aligned and each having an overmold-supported portion supported by the housing overmold;
a first volute attached to a first outer end of the first shaft and with the housing overmold defining a first pump cavity at the first outer end and a first inlet to the first pump cavity and a first passageway extending from the first pump cavity to a first outlet;
a first rotor assembly operably engaging the first shaft and having a first pump impeller in the first pump cavity;
a second volute attached to a second outer end of the second shaft and with the housing overmold defining a second pump cavity at the second outer end and a second inlet to the second pump cavity and a second fluid passageway extending from the second pump cavity to a second outlet;
a second rotor assembly operably engaging the second shaft and having a second pump impeller in the second pump cavity;
a first stator adjacent the first rotor assembly and a second stator adjacent the second rotor assembly, both the first and second stators including windings for causing independent rotation of the first rotor assembly and the second rotor assembly, respectively; and
a printed circuit board mounted to the housing overmold and programmed to independently control the first and second rotor assemblies; the housing overmold including structure directly supporting the printed circuit board over non-pump ends of the first and second shafts opposite the first and second volutes.

Assignees

• Ghsp Inc

Inventors

• Rosinski Ryan David
• Ridge Larry Duane
• Kirby Jarvis
• Stewart Cathy Ann
• Mitteer David Michael

Classifications

• F04D13/14 Primary

  the pumps being all of centrifugal type {(deviation valves F04D15/0016)} · CPC title

• F04D29/4206

  especially adapted for elastic fluid pumps · CPC title

• F04D13/06 Primary

  the pump being electrically driven · CPC title

• F04D29/053

  Shafts · CPC title

• F04D15/0066

  by changing the speed, e.g. of the driving engine · CPC title