AU2021101403B4 - A filter system for a pool - Google Patents

A filter system for a pool Download PDF

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Publication number
AU2021101403B4
AU2021101403B4 AU2021101403A AU2021101403A AU2021101403B4 AU 2021101403 B4 AU2021101403 B4 AU 2021101403B4 AU 2021101403 A AU2021101403 A AU 2021101403A AU 2021101403 A AU2021101403 A AU 2021101403A AU 2021101403 B4 AU2021101403 B4 AU 2021101403B4
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AU
Australia
Prior art keywords
filter element
cap
pool
holder
support member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
AU2021101403A
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AU2021101403A4 (en
Inventor
Peter Hogg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magnum Filters Ltd
Original Assignee
Magnum Filters Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magnum Filters Ltd filed Critical Magnum Filters Ltd
Priority to AU2021101403A priority Critical patent/AU2021101403B4/en
Application granted granted Critical
Publication of AU2021101403A4 publication Critical patent/AU2021101403A4/en
Publication of AU2021101403B4 publication Critical patent/AU2021101403B4/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
    • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
    • B01D29/54—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/08—Construction of the casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
    • B01D29/055—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported ring shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/12—Devices or arrangements for circulating water, i.e. devices for removal of polluted water, cleaning baths or for water treatment
    • E04H4/1209—Treatment of water for swimming pools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0415—Details of supporting structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/29—Filter cartridge constructions
    • B01D2201/291—End caps

Abstract

A filter system for a pool comprises an annular filter element comprising a longitudinal passage therethrough, a holder for mounting the filter element into a pool, and a cap. The holder comprises a base plate, a fitting connected to the base plate for fluidly connecting the filter system to a suction port of the pool, the fitting providing an outlet from the filter system, and a support member extending from the base plate and in fluid communication with the outlet. The support member is configured to receive the annular filter element thereon. A cap is configured to be removably fitted to an upper end of the support member to retain the annular filter element between the cap and the base plate so that in use water passes through a side of the annular filter element to the outlet. The cap is configured to be removably fitted to the upper end of the support member by a push fit. 10

Description

A FILTER SYSTEM FOR A POOL
Technical Field
This invention relates to a filter system for fitting a filter element to a pool such as a spa pool or
swimming pool to maintain the cleanliness of the pool water.
Background
.0 Filters are fitted to pools such as spa pools or swimming pools to filter the water to keep the water
clean. A prior art pool filter assembly is illustrated in Figures 1A to 1C. The filter assembly 101has a
filter element 102 between a top plate 103 and a base plate 104. The base plate 104 is provided
with a fitting 105 such as a threaded male fitting to be received in a corresponding female threaded
fitting within a pool suction port to attach the filter assembly to the pool. The filter element 102
.5 typically comprises a pleated paper element formed into an annular member. The annular pleated
filter element is permanently attached between the top plate 103 and base plate 104. For example,
the top and bottom plates 103, 104 are over-moulded to ends of the pleated paper element 102.
Pool water enters the filter assembly through a side of the annular filter element and then passes
from the filter assembly through the fitting to thereby filter water as it is circulated through the pool '0 and filter assembly by a pump unit.
Pool filters must be replaced regularly as they become clogged with filtered debris during use.
Replacement filters present the pool owner with an ongoing expense required to maintain the pool
in a healthy useable condition. In addition to being expensive, filters can be difficult or time
consuming to remove and replace. The entire filter assembly must be removed from the pool
suction port so that a replacement filter assembly can be fitted in place.
The reference to any prior art in the specification is not, and should not be taken as, an
acknowledgement or any form of suggestion that the prior art forms part of the common general
knowledge in any country.
Disclosure of Invention
It is an object of the present invention to address any one or more of the above problems or to at
least provide the industry with a useful choice.
According to a first aspect of the present invention there is provided a filter system for a pool
comprising: an annular filter element comprising a longitudinal passage therethrough,
a holder for mounting the filter element into a pool, the holder comprising:
.0 a base plate;
a fitting connected to the base plate for fluidly connecting the filter system to a
suction port of the pool, the fitting providing an outlet from the filter system;
a support member extending from the base plate and in fluid communication with
the outlet, the support member configured to receive the annular filter element thereon,
.5 and
a cap configured to be removably fitted to an upper end of the support member to retain
the annular filter element between the cap and the base plate so that in use water passes through a
side of the annular filter element to the outlet; and
wherein the cap is configured to be removably fitted to the upper end of the support '0 member by a push fit.
In some embodiments, the cap comprises a male plug configured to be received in an end of the
support member.
In some embodiments, the cap forms a seal between the cap and an upper end of the support
member and/or between the cap and an upper end of the annular filter element.
In some embodiments, the filter element comprises an annular filter medium and an upper end
plate and a lower end plate fitted to ends of the filter medium to seal ends of the annular filter
element.
In some embodiments, the cap comprises a seal member provided around a circumference of the
plug to seal against an inner surface of a side wall of the support member, or an upper plate of the annular filter element. The seal member may be an o-ring received in a circumferential groove in an outer surface ofthe plug.
In some embodiments, the fitting comprises a threaded hollow spigot.
In some embodiments, the annular filter element comprises an annular filter medium with annular
end plates fitted to ends of the filter medium. The annular filter medium may be or comprise a sheet of pleated paper that is formed into a pleated annular paper element. The end plates are
preferably plastic end plates over-moulded onto ends of the annular filter medium so that ends of
.0 the annular filter element are fluidly sealed.
According to a second aspect of the present invention there is provided a method for fitting a filter
element to a pool, the method comprising:
providing a filter system as described in any one or more of the above statements,
.5 fitting the holder to the pool by connecting the fitting of the holder base plate to a suction
port of the pool,
mounting the annular filter element to the holder, and
fitting the cap to the holder by pressing the cap onto the holder, to releasably retain the
filter element to the holder and allow for replacement filter elements to be subsequently provided to the holder without removal of the holder from the pool.
In this specification and claims, terms such as "upper", "lower", "top" or "bottom" are used in a
relative sense only and are not intended to be limiting to any one orientation. For example, a filter
system as described herein mounted in an inverted position may have an upper end of a holder
located lowermost.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like, are to be construed in an inclusive sense as opposed to an
exclusive or exhaustive sense, that is to say, in the sense of "including, but not limited to".
Where in the foregoing description, reference has been made to specific components or integers of
the invention having known equivalents, then such equivalents are herein incorporated as if
individually set forth.
The invention may also be said broadly to consist in the parts, elements and features referred to or
indicated in the specification of the application, individually or collectively, in any or all combinations
of two or more of said parts, elements or features, and where specific integers are mentioned herein
which have known equivalents in the art to which the invention relates, such known equivalents are
deemed to be incorporated herein as if individually set forth.
Further aspects of the invention, which should be considered in all its novel aspects, will become apparent from the following description given by way of example of possible embodiments of the
invention.
.0
Brief description of the drawings
An example embodiment of the invention is now discussed with reference to the Figures.
.5 Figures 1A to IC illustrate a prior art filter assembly for a pool. Figure 1A is an isometric view
from above, Figure 1B is an isometric view from below, and Figure IC is a side view.
Figures 2A to 2D illustrate a filter system and components of the filter system according to
the present invention. Figure 2A is an exploded side view of the filter system. Figure 2B is an
isometric view of a cap and a filter element holder of the filter system shown in Figure 2A. Figure 2C is an isometric view of a filter element of the filter system of Figure 2A viewed from below. Figure
2D is an isometric view of the filter element of the filter system of Figure 2A viewed from above.
Figure 3 illustrates the filter system of Figure 2A assembled.
Best modes for carrying out the Invention
Figures 2A to 2D illustrate a filter system and components of the filter system for a pool such as a
swimming pool or spa pool according to an embodiment of the present invention.
The filter system 1 comprises an annular filter element 2 with a longitudinal passage 3 (Figures 2C
and 2D) therethrough. The annular filter element 2 may comprise an annular filter medium 2a with
annular end plates 2b, 2c fitted to ends of the filter medium 2a. The annular filter medium may be
or comprise a sheet of pleated paper that is formed into a pleated annular paper element 2a. The
end plates 2b and 2c are preferably plastic end plates over-moulded onto ends of the annular filter
medium so that ends of the annular filter element are fluidly sealed. Water may flow through the sides of the annular filter element 2, through sides of the annular filter medium from an outside of the filter element to the inner longitudinal passage 3. The longitudinal passage 3 extends a full height of the annular filter element 2.
The system further comprises a holder 4 for releasably mounting the filter element 2 into a pool.
The holder comprises a base plate 5. A fitting 6 is connected to the base plate 5 for fluidly
connecting the filter system 1 to a suction port of the pool. The fitting may be integrally formed with the base plate 5, for example the base plate and fitting may be a unitary moulded component.
The fitting provides an outlet from the filter system. For example, the fitting is a threaded hollow
.0 spigot connected to the base plate. The fitting is aligned with a central hole through the base plate.
The base plate is an annular base plate.
A support member 7 extends from the base plate. The support member extends from an opposite
side of the base plate to the fitting 6. The support member 7 is configured to receive the annular
.5 filter element 2 thereon. The annular filter element 2 is mounted to the holder 4 by providing the
annular filter element 2 over the support member 7 so that the support member 7 is received within
the longitudinal passage 3 of the annular filter element 2.
In the illustrated embodiment the support member is or comprises a tubular member 7. The tubular member is in fluid communication with the outlet. For example, the tubular member is aligned with
the outlet 6. The tubular member comprises a plurality of inlets or apertures 8 through a side wall of
the tubular member 7.
A cap 9 is configured to be removably fitted to an upper end of the support member 7 to releasably
retain the annular filter element 2 on the holder 4 between the cap 9 and the base plate 5. In use,
pool water is filtered by the filter element 2 by passing through a side wall of the annular filter
element 2 from an outside of the annular filter element 2 to the longitudinal passage 3 of the
annular filter element 2, and to the outlet 6. In the illustrated embodiment, water passes through
the annular filter element 2, and then through the apertures 8 in the tubular member 7 received in
the longitudinal passage 3 of the annular filter element, to then passes out of the filter system via
the outlet 6.
Importantly the cap 9 is configured to be removably fitted to the upper end of the support member
7 by a push fit. The cap 9 is fitted to the support member 7 by pushing the cap 9 onto the end of the
support member 7.
In the illustrated embodiment, the cap comprises a male plug 10 configured to be received in an end
of the support member 7. The cap 9 comprises a flange 13 and the plug 10 extending from the
flange 13. With the plug 10 received in the end of the support member 7, the filter element 2 is retained between the cap flange 13 and the base plate 5. With the filter element 2 received on the
support member 7 and with the cap 9 fitted to the support member 7, the plug 10 is located inside
.0 the support member 7 within the longitudinal passage 3 of the filter element 2. The male plug may
seal against a corresponding inner surface of the support member to provide a substantially fluid
tight seal. For example, the support member 7 may comprise a ring 11 (Figure 2B) at an upper end
against which the plug seals, i.e. against an inner circumferential surface of the ring 11. In the
illustrated embodiment, the cap 9 comprises a seal member 12 provided around a circumference of
.5 the plug 10 to seal against an inner surface of the side wall of the tubular member. The seal
member 12 is an o-ring received in a circumferential groove in an outer surface of the plug 10.
Alternatively, or additionally, the cap 9 may form or provide a face seal between the cap 9 and the
upper end of the support member 7.
Alternatively, or additionally, the cap 9 may form a fluid tight seal between the cap 9 and an upper
end of the annular filter element 2. For example, the cap 9 may form a seal between the cap 9 and
the upper end plate 2b of the annular filter element 2. The cap 9 may form a face seal with the
upper end plate 2b or may form a circumferential seal with an inner circumference of the upper
plate 2b. For example, the circumferential seal member 12 on the plug 10 may seal against an inner
circumference of the upper plate 2b.
The holder 4 may be fitted permanently to the suction port of a pool, i.e. the holder essentially
becomes a permanent fixture of the pool. The holder 4 remains in place in the pool for an extended
time period and/or for the useful life of the pool. Replacement of filter elements 2 is straight
forward. The cap 9 is removed from the holder, the used filter element 2 is removed from the
holder 4, a replacement filter element 2 is mounted to the holder 4 and the cap 9 is replaced to the
holder 4 to keep the element 2 in place on the holder 4. The push fit removal and replacement of
the cap 9 makes for quick and easy replacement the filter element 2. The filter system 1 avoids the
requirement for fitment of a filter assembly directly to the suction port of the pool, since the holder
4 remains in place fitted to the suction port. Further, components of the holder 4 need to be
provided and fitted only once. Only replacement filter elements need to be provided, reducing
replacement costs.
Although this invention has been described by way of example and with reference to possible
embodiments thereof, it is to be understood that modifications or improvements may be made
thereto without departing from the spirit or scope of the appended claims.

Claims (5)

Claims
1. A filter system for a pool comprising: an annular filter element comprising a longitudinal passage therethrough, a holder for mounting the filter element into a pool, the holder comprising: a base plate; a fitting connected to the base plate for fluidly connecting the filter system to a suction port of the pool, the fitting providing an outlet from the filter system; a support member extending from the base plate and in fluid communication with the outlet, the support member configured to receive the annular filter element thereon, and a cap comprising a male plug, wherein the plug is configured to seal against an inner surface of the support member, to retain the annular filter element between the cap and the base plate so that in use water passes through a side of the annular filter element to the outlet; and wherein the cap is configured to be removably fitted to the upper end of the support member by a push fit.
2. The filter system as claimed in claim 1, wherein the cap comprises a seal member provided around a circumference of the male plug to seal against the inner surface of the support member.
3. The filter system as claimed in claim 1 or 2, wherein the cap forms a seal between the cap and an upper end of the support member and/or between the cap and an upper end of the annular filter element.
4. The filter system as claimed in any one of claims 1 to 3, wherein the filter element comprises an annular filter medium and an upper end plate and a lower end plate fitted to ends of the filter medium to seal ends of the annular filter element.
5. A method for fitting a filter element to a pool, the method comprising: providing a filter system as claimed in any one of claims 1 to 4, fitting the holder to the pool by connecting the fitting of the holder base plate to a suction port of the pool, mounting the annular filter element to the holder, and fitting the cap to the holder by pressing the cap onto the holder, to releasably retain the filter element to the holder and allow for replacement filter elements to be subsequently provided to the holder without removal of the holder from the pool.
AU2021101403A 2021-03-18 2021-03-18 A filter system for a pool Active AU2021101403B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2021101403A AU2021101403B4 (en) 2021-03-18 2021-03-18 A filter system for a pool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU2021101403A AU2021101403B4 (en) 2021-03-18 2021-03-18 A filter system for a pool

Publications (2)

Publication Number Publication Date
AU2021101403A4 AU2021101403A4 (en) 2021-05-13
AU2021101403B4 true AU2021101403B4 (en) 2023-02-09

Family

ID=75829074

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2021101403A Active AU2021101403B4 (en) 2021-03-18 2021-03-18 A filter system for a pool

Country Status (1)

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Publication number Publication date
AU2021101403A4 (en) 2021-05-13

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