Modular pump and filter system and method

Patent metadata

Field	Value
Publication number	US-9555352-B2
Application number	US-201113327588-A
Country	US
Kind code	B2
Filing date	Dec 15, 2011
Priority date	Dec 21, 2010
Publication date	Jan 31, 2017
Grant date	Jan 31, 2017

Abstract

Embodiments of the invention provide a pump and filter system and method. The system includes a housing with a housing cavity and a filter cartridge, and a pump positioned in the housing cavity. The filter cartridge splits the housing cavity into a filtered region and an unfiltered region and the pump is located in the filtered region. The method includes operating the pump to pull fluid through a housing inlet into the unfiltered region, to pull fluid across the filter cartridge into the filtered region via suction pressure of the pump, and to force the fluid through the pump to a housing outlet.

First claim

The invention claimed is:

1. A pump and filter system comprising:
a housing including a housing inlet, a housing outlet, and a housing cavity;
a filter cartridge positioned within the housing cavity, the filter cartridge substantially splitting the housing cavity into an unfiltered region adjacent to the housing inlet and a filtered region adjacent to the housing outlet; and
a pump positioned within the filtered region of the housing cavity, the filter cartridge surrounding an inlet of the pump and a portion of a motor of the pump.

2. The system of claim 1 , wherein the housing inlet is in fluid communication with the unfiltered region of the housing cavity.

3. The system of claim 1 , wherein the pump includes a pump outlet in fluid communication with the housing outlet.

4. The system of claim 1 , wherein the motor includes a rotor and a stator, and an impeller is coupled to the rotor, and wherein at least the impeller is in fluid communication with the housing cavity and at least the stator is substantially sealed from the housing cavity.

5. The system of claim 1 , wherein the housing inlet is positioned substantially above the housing outlet.

6. The system of claim 1 , and further comprising a pre-filter element between the housing inlet and the unfiltered region.

Assignees

• Stiles Jr Robert W
• Weaver Ryan
• Boothe Brian
• Pentair Water Pool & Spa Inc

Inventors

• Stiles Jr Robert W
• Weaver Ryan
• Boothe Brian

Classifications

• C02F2103/42

  from bathing facilities, e.g. swimming pools · CPC title

• B01D29/50

  with multiple filtering elements, characterised by their mutual disposition (B01D29/39 takes precedence) · CPC title

• B01D35/26 Primary

  Filters with built-in pumps {filters provided with a pump mounted in or on the casing (aquarium pumps or filters A01K63/04)} · CPC title

• E04H4/1245 Primary

  Recirculating pumps for swimming pool water · CPC title

• C02F1/004

  using large scale industrial sized filters · CPC title