Retrofitting and use of rectangular filters, assembly and method for filtration

Abstract

An adaptor device for retrofitting in a pool filter housing is disclosed, where the pool filter housing has a conventional cylindrical concentric filter. The adaptor device allows the pool filter to be retrofitted with a plurality of filter elements, thereby improving its filtering efficiency.

Description

PRIOR RELATED APPLICATIONS[0001]This application is a Continuation-In-Part of U.S. application Ser. No. 16 / 112,023, filed Aug. 24, 2018, which claims priority to U.S. provisional application Ser. No. 62 / 550,096 filed Aug. 25, 2017; this application is also a Continuation-In-Part of U.S. application Ser. No. 15 / 901,580, filed Feb. 21, 2018, which claims priority to U.S. provisional application Ser. No. 62 / 462,327, filed Feb. 22, 2017, all of which are incorporated herein in their entirety for all purposes.FIELD OF THE DISCLOSURE[0002]The disclosure generally relates to an assembly to accommodate rectangular or wedge shaped filters in a filter housing for filtering liquids in pool and spa applications. The filter media may be pleated media therein that are capable of high efficiency filtration as well as easy replacement of the filter element. The rectangular or wedge-shaped filters can also be used to filter many types of fluids and fluid mixtures.BACKGROUND OF THE DISCLOSURE[0003]As...

AI Technical Summary

Benefits of technology

[0010]This disclosure is an efficient filter assembly that can also include an adaptor device that transforms a single cylindrical-cartridge filter vessel or a quadruple-cartridge filter vessel as used in the pool and spa application into a multi-filter element device in order to increase the filter surface area over the same vessel, improve filtration performance, and reduce the difficulty to service or replace the filter cartridges. With the adaptor device, the conventional pool and spa filter housing that uses cylindrical filter cartridges can be readily converted to use rectangular- or wedge-shaped filter elements. These rectangular or wedge-shaped filter elements can effectively reduce the dead space inside the filter housing, thereby increase the filtration surface area and improve filtration efficiency and reducing the energy and maintenance cost.

[0022]In this disclosure, the rectangular shaped filter element can be replaced with a wedge-shaped filter element in order to increase the surface area of filters, provided that ports or openings in the adaptor plate are configured according to the type and number of filter element used for outflow of clean fluid.

[0024]In the case of a separation plate, after installing the adaptor plate and spacer on top of the separation plate, the cylindrical filter cartridge can be converted into a multi-cartridge filter system. The adaptor plate being close to the separation plate with spacer in between the two plates, therefore the space inside the filter housing remains available for installing a plurality of filter elements. The spacer is preferably a ring with substantially the same circumference as the inner circumference of the filter housing, and with the spacer between the adaptor plate and the separation plate, any fluid flowing through the ports in the adaptor plate would then be directed to the central hole of the separation plate, thus maintaining the filtration efficiency.

[0026]For adaptor plates, filter receivers are mounted thereon, which provides a plurality of ports allowing fluid to flow through the adaptor plate. The rectangular shaped filter elements are inserted or otherwise secured in filter receivers that also have openings that communicate with the opening in the bottom caps. The ports in the adaptor plate communicate with the openings in the filter receivers. The filter supports are mounted on the filter receivers and extend into the central void of each rectangular shaped filter without hampering fluid flow from the central void of the rectangular shaped filter and through the openings in the separation plate.

Problems solved by technology

As a filter ages, the length of time between necessary cleanings becomes shorter due to algae bloom or particle build up.

This cylindrical cartridge design does not provide the highest surface area available inside the housing.

Additionally, cylindrical filter cartridges used inside a cylindrical filter housing inevitably leaves unused dead space within the housing.

The cylindrical cartridge filters of pleated media, while easy to manufacture and use, do not effectively utilize the space inside the filter housing.

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