WO2009001142A1 - Filtering system with means for purging the system - Google Patents

Filtering system with means for purging the system Download PDF

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Publication number
WO2009001142A1
WO2009001142A1 PCT/GB2008/050504 GB2008050504W WO2009001142A1 WO 2009001142 A1 WO2009001142 A1 WO 2009001142A1 GB 2008050504 W GB2008050504 W GB 2008050504W WO 2009001142 A1 WO2009001142 A1 WO 2009001142A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
inner chamber
chamber
tube
sieve
Prior art date
Application number
PCT/GB2008/050504
Other languages
French (fr)
Inventor
Balvinder Singh Nagi
Original Assignee
Balvinder Singh Nagi
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 Balvinder Singh Nagi filed Critical Balvinder Singh Nagi
Publication of WO2009001142A1 publication Critical patent/WO2009001142A1/en

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
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/06—Filters making use of electricity or magnetism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0332—Component parts; Auxiliary operations characterised by the magnetic circuit using permanent magnets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/288—Magnetic plugs and dipsticks disposed at the outer circumference of a recipient
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/30—Combinations with other devices, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/0092—Devices for preventing or removing corrosion, slime or scale
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/08—Regeneration of the filter
    • B01D2201/085—Regeneration of the filter using another chemical than the liquid to be filtered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/30—Filter housing constructions
    • B01D2201/309—Housings with transparent parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/30—Details of magnetic or electrostatic separation for use in or with vehicles

Definitions

  • the present invention relates to a filtering and purging system for filtering and purging closed loop liquid systems from undesirable deposits.
  • the water in central heating systems needs periodically to be cleansed from sludge and other undesirable impurities which gather over time.
  • the raised temperatures in such heating circuits causes scale to be released from the water in the system which then becomes deposited on the internal surfaces of the systems. Rusting of iron components within the system produces iron oxide which then becomes deposited as a sludge.
  • the build up of both scale and sludge leads to inefficiency and damage within the system. As a result, the system needs to be periodically cleaned. Also, pre-cleaning of newly installed systems is often required by the manufacturers to validate the guarantee for the heating appliance, eg the gas boiler.
  • a filtering and purging system comprising an outer transparent chamber containing an inner chamber having walls defining a sieve, means for feeding a liquid at a location in a closed loop system through the inner chamber to the outer chamber back to the closed loop system , a reversible pump, means for selectively coupling the pump into the system so that the pump can be operated to drive the liquid in the system first in one direction around the loop and then in the opposite direction.
  • the filtering and purging system of the sole figure forms part of a central heating system including a condensing boiler. It will, however, be appreciated that it can be used as a stand alone unit as well as retrofitted to an existing central heating system.
  • the system is fitted into the main flow path to or from the boiler and has an input 2 and an output 4.
  • the system includes a transparent tube 6, for example of polycarbonate, housing a cylindrical sieve 8 open at one end and closed at the other end.
  • the open end is encircled by an annular flange 10 which can be clamped against one end of the tube 6 by screwthreaded nut 12 which screwthreadedly engages a screwthread in the outer surface of the tube 6.
  • One or more O-rings 14 form a seal between the sieve 8 and the tube 6 and the nut 12.
  • the sieve 8 thus lies suspended within the tube 6 to lie coaxial with the tube.
  • a sensor access port (not shown) may be provided in the wall of the transparent tube 6 to enable a measurement of water solids to be taken.
  • a bar magnet 16 is clamped to the outside of the tube 6 to extend parallel to the common axis of the tube 6 and the sieve 8.
  • a second nut 18 is screwthreadedly coupled to the opposite end of the tube 6 and an O-ring 20 maintains a seal between the two.
  • a manifold 22 welded to or forming part of the nut 12, is coupled to an inlet tube 24 which leads to the inlet 2 via a valve 26.
  • Manifolds 22 and 36 are identical to each other in construction.
  • a first conduit 28 containing a valve 30 is connected to the inlet tube 24 upstream of the valve 26 via a T-junction.
  • a second conduit 32 contains a valve 34 is connected to the inlet tube 24 downstream of the valve 26 via a T-junction.
  • a by-pass loop is created by attaching an external pump 44 via valves 50, 52 and closing valve 40. This allows for the easy attachment of the external pump to the system, which in existing systems proves to be difficult.
  • a manifold 36 (which may contain an air vent - not shown, to tube 6) welded to or forming part of the nut 18 is coupled to an outlet tube 38 which leads to the outlet 4 via a valve 40.
  • a by-pass loop 42 containing a reversible pump 44 is coupled to the outlet tube on opposite sides of the valve 40 through respective inlet and outlet valves 50 and 52.
  • the sieve 8 which may be of stainless steel, is perforated circumferentially and at its closed end with very fine pores, each having a diameter of the order preferably of 50 to 70 microns to inhibit the passage of particulates of small diameter.
  • the outer surface has at least one opening 46 of between 0.75 to 1.25 sq cms in area to allow liquid to escape from the sieve in the event that the pores in the sieve become unduly clogged.
  • the magnet 16 acts to attract magnetisable particles in the liquid passing through the sieve to the adjacent internal wall of the sieve 6.
  • the power of the magnet is preferably between 10 to 20 KGauss.
  • valves 30, 34, 50 and 52 are closed and valves 26 and 40 are open so allowing the free flow of liquid from the inlet 2 to the outlet 4 of the system.
  • the sieve 8 captures most of the sludge and impurities within its chamber but as the sludge and impurities build up, they will start to escape from the opening 46 and so the liquid in the gap between the tube 6 and the sieve will become cloudy and this will be observable because of the transparency of the tube.
  • the actuation of the pump 44 may be conducted in such a way that Shockwaves are directed through the whole central heating system loop in either direction to dislodge any residual sludge or particulate material within the loop.
  • the conduit 32 is connected to a drain (not shown), the conduit 28 is connected to a fresh water inlet (not shown) containing a contaminant dissolving chemical, the valve 26 closed and the valves 30 and 34 opened.
  • the chemical is thus circulated around the central heating system and eventually discharges through the drain. This may take place with or without the assistance of the pump 44.
  • valve 26 may then be opened and the valves 30 and 34 closed to allow the pump 44 to be actuated once again in the aforementioned manner while the chemical is still present in the system. Finally, the valve 26 is then closed again.
  • the valves 30 and 34 are opened once again after the conduit 28 has been connected to a source of clean water (and conduit 32 to a drain) to allow the contents of the whole system to be replaced with clean water.
  • the valves 30 and 34 are then closed and the valves 26 and 40 opened to allow the boiler to resume its normal operation.
  • valves 50 and 52 may be closed including the valves 50 and 52 in the loop 42 to allow the tube 6 to be decoupled from the nuts 12 and 18 so that the sieve can be replaced with a new sieve or with the same sieve after it has been subjected to more vigorous cleaning.
  • Dry chemicals may be added by uncoupling at 18 (closing valves 26, 34, 40 and 50), which allows not only for sieve 8 to be cleaned/replaced but for dry chemicals to be held in tube 6 or replaced.
  • Wet chemicals may be added by closing valves 26 and 40, opening valve 50 to release some pressure/system water and connecting via valve 34 to a chemical injection device. The injected chemical will displace the system water by an equal volume at 50 (pump 44 detached).
  • this filtering and purging system can be incorporated into other forms of closed loop liquid systems such as car cooling systems and air conditioning systems, and may readily be mounted in a vertical or horizontal position.
  • valves 26, 30 and 34 can be replaced by a single multi-inlet/outlet diverter valve which can perform the same function.
  • valve 40 and the valves 50 and 52 in the loop 42 can be replaced by a single diverter valve.

Abstract

The filtering and purging system includes one outer transparent tube (6) containing an inner tubular sieve (8). A bar magnet (16) attached to the outer wall of the tube (6) attracts magnetic debris to the adjacent inner wall of the sieve (8). A reversible pump (44) is coupled to the system to pump liquid in opposite direction through the tube (6). A system of valves (26, 30, 34 and 40) allpws an impurity dissolving chemical to be circulated around the system and then filled with fresh liquid.

Description

FILTERING SYSTEM WITH MEANS FOR PURGING THE SYSTEM
The present invention relates to a filtering and purging system for filtering and purging closed loop liquid systems from undesirable deposits.
The water in central heating systems, particularly condensing boiler systems, needs periodically to be cleansed from sludge and other undesirable impurities which gather over time. The raised temperatures in such heating circuits causes scale to be released from the water in the system which then becomes deposited on the internal surfaces of the systems. Rusting of iron components within the system produces iron oxide which then becomes deposited as a sludge. The build up of both scale and sludge leads to inefficiency and damage within the system. As a result, the system needs to be periodically cleaned. Also, pre-cleaning of newly installed systems is often required by the manufacturers to validate the guarantee for the heating appliance, eg the gas boiler.
It is the object of the invention to provide an improved filtering and purging system.
According to the present invention there is provided a filtering and purging system comprising an outer transparent chamber containing an inner chamber having walls defining a sieve, means for feeding a liquid at a location in a closed loop system through the inner chamber to the outer chamber back to the closed loop system , a reversible pump, means for selectively coupling the pump into the system so that the pump can be operated to drive the liquid in the system first in one direction around the loop and then in the opposite direction.
It will be appreciated that one of the advantages of the embodiment described hereinafter is that several processes can be carried out with the same combination of components. This allows engineers or even householders to carry out the task of cleaning both readily and economically. Thus, water and wet and dry chemicals can be readily introduced into the system. The system can be drained and spent chemicals and debris ejected. The external reversible power flushing pump can be readily detached and attached thus enabling the use of a more powerful pump for more rigorous flushing. The use of a stainless steel filter, an external magnetic and transparent housing also provides for the obvious advantages.
A filtering and purging system embodying the present invention, will now be described, with reference to the accompanying diagrammatic drawings, in which the sole figure (1) is a longitudinal section through the system.
The filtering and purging system of the sole figure forms part of a central heating system including a condensing boiler. It will, however, be appreciated that it can be used as a stand alone unit as well as retrofitted to an existing central heating system.
The system is fitted into the main flow path to or from the boiler and has an input 2 and an output 4.
The system includes a transparent tube 6, for example of polycarbonate, housing a cylindrical sieve 8 open at one end and closed at the other end. The open end is encircled by an annular flange 10 which can be clamped against one end of the tube 6 by screwthreaded nut 12 which screwthreadedly engages a screwthread in the outer surface of the tube 6. One or more O-rings 14 form a seal between the sieve 8 and the tube 6 and the nut 12. The sieve 8 thus lies suspended within the tube 6 to lie coaxial with the tube.
A sensor access port (not shown) may be provided in the wall of the transparent tube 6 to enable a measurement of water solids to be taken.
A bar magnet 16 is clamped to the outside of the tube 6 to extend parallel to the common axis of the tube 6 and the sieve 8.
A second nut 18 is screwthreadedly coupled to the opposite end of the tube 6 and an O-ring 20 maintains a seal between the two.
A manifold 22, welded to or forming part of the nut 12, is coupled to an inlet tube 24 which leads to the inlet 2 via a valve 26. Manifolds 22 and 36 are identical to each other in construction.
A first conduit 28 containing a valve 30 is connected to the inlet tube 24 upstream of the valve 26 via a T-junction. A second conduit 32 contains a valve 34 is connected to the inlet tube 24 downstream of the valve 26 via a T-junction. A by-pass loop is created by attaching an external pump 44 via valves 50, 52 and closing valve 40. This allows for the easy attachment of the external pump to the system, which in existing systems proves to be difficult.
A manifold 36 (which may contain an air vent - not shown, to tube 6) welded to or forming part of the nut 18 is coupled to an outlet tube 38 which leads to the outlet 4 via a valve 40. A by-pass loop 42 containing a reversible pump 44 is coupled to the outlet tube on opposite sides of the valve 40 through respective inlet and outlet valves 50 and 52. The sieve 8, which may be of stainless steel, is perforated circumferentially and at its closed end with very fine pores, each having a diameter of the order preferably of 50 to 70 microns to inhibit the passage of particulates of small diameter. Near the upstream end of the sieve 8, the outer surface has at least one opening 46 of between 0.75 to 1.25 sq cms in area to allow liquid to escape from the sieve in the event that the pores in the sieve become unduly clogged. The magnet 16 acts to attract magnetisable particles in the liquid passing through the sieve to the adjacent internal wall of the sieve 6. The power of the magnet is preferably between 10 to 20 KGauss.
In operation, when the central heating system is acting normally, valves 30, 34, 50 and 52 are closed and valves 26 and 40 are open so allowing the free flow of liquid from the inlet 2 to the outlet 4 of the system. Initially, the sieve 8 captures most of the sludge and impurities within its chamber but as the sludge and impurities build up, they will start to escape from the opening 46 and so the liquid in the gap between the tube 6 and the sieve will become cloudy and this will be observable because of the transparency of the tube.
This indicates that the system needs purging. To conduct a purging operation:
A. Without an external pump:
- de-energise boiler and remove magnet - close valve 26
- open valve 30 to fresh water inlet, which will displace the system water to drain via the opened valve 34.
Purging should continue until the water in tube 6 appears clear.
B. With an external flushing pump:
- de-energise boiler and remove magnet
- close valves 26 and 40
- open valves 50 and 52 for flushing pump to operate - open valve 30 to fresh water inlet, which will displace the system water to drain via the opened valve 34
Purging should continue until the water in tube 6 appears clear.
The actuation of the pump 44 may be conducted in such a way that Shockwaves are directed through the whole central heating system loop in either direction to dislodge any residual sludge or particulate material within the loop.
The conduit 32 is connected to a drain (not shown), the conduit 28 is connected to a fresh water inlet (not shown) containing a contaminant dissolving chemical, the valve 26 closed and the valves 30 and 34 opened. The chemical is thus circulated around the central heating system and eventually discharges through the drain. This may take place with or without the assistance of the pump 44.
The valve 26 may then be opened and the valves 30 and 34 closed to allow the pump 44 to be actuated once again in the aforementioned manner while the chemical is still present in the system. Finally, the valve 26 is then closed again. The valves 30 and 34 are opened once again after the conduit 28 has been connected to a source of clean water (and conduit 32 to a drain) to allow the contents of the whole system to be replaced with clean water. The valves 30 and 34 are then closed and the valves 26 and 40 opened to allow the boiler to resume its normal operation.
Optionally, all the valves may be closed including the valves 50 and 52 in the loop 42 to allow the tube 6 to be decoupled from the nuts 12 and 18 so that the sieve can be replaced with a new sieve or with the same sieve after it has been subjected to more vigorous cleaning. Dry chemicals may be added by uncoupling at 18 (closing valves 26, 34, 40 and 50), which allows not only for sieve 8 to be cleaned/replaced but for dry chemicals to be held in tube 6 or replaced. Wet chemicals may be added by closing valves 26 and 40, opening valve 50 to release some pressure/system water and connecting via valve 34 to a chemical injection device. The injected chemical will displace the system water by an equal volume at 50 (pump 44 detached).
It will be appreciated that this filtering and purging system can be incorporated into other forms of closed loop liquid systems such as car cooling systems and air conditioning systems, and may readily be mounted in a vertical or horizontal position.
It allows constant filtering of the liquid in the system and allows easy and regular purging of the whole system.
Insofar as condensing boiler systems are concerned, the need for separate conduits 28 and 32 and valves 30 and 34 can be obviated by adapting the existing boiler safety valve conduit (drain) and the water refill conduit for changing the system.
It will be appreciated that the three valves 26, 30 and 34 can be replaced by a single multi-inlet/outlet diverter valve which can perform the same function.
Equally, the valve 40 and the valves 50 and 52 in the loop 42 can be replaced by a single diverter valve.

Claims

Claims
1. A filtering and purging system comprising an outer transparent chamber containing an inner chamber having walls defining a sieve, means for feeding a liquid at a location in a closed loop system through the inner chamber to the outer chamber back to the closed loop system , a reversible pump, means for selectively coupling the pump into the system so that the pump can be operated to drive the liquid in the system first in one direction around the loop and then in the opposite direction.
2. A system according to Claim 1, including means for operating the pump in sharp pulses in opposite directions.
3. A system according to Claim 1 or to Claim 2, including magnetic means coupled to the exterior of the outer chamber to attract and retain magnetisable particles against the adjacent wall of the inner chamber.
4. A system according to any one of Claims 1 to 3, including an inlet conduit and an outlet conduit coupled at spaced locations upstream of the inner chamber, so that when the flow between the spaced location is blocked and the conduits are opened the contents of the loop can be discharged and replaced with an impurity dissolving chemical or with fresh liquid.
5. A system according to any preceding claim, wherein the inner and outer chambers are substantially cylindrical and extend coaxially.
6. A system according to Claim 5, wherein the outer chamber is of transparent polycarbonate.
7. A system according to Claim 5 or Claim 6, wherein the inner chamber is of stainless steel having a plurality of pores each having a diameter in the range of from 50 to 70 micrometers.
8. A system according to Claim 7, wherein the inner chamber has a by-pass opening located adjacent its upstream end having an area in the range of from 0.75 to 1.25 sq cm.
9. A system according to any preceding claim, wherein the outer and inner chambers are readily decoupleable from the system.
PCT/GB2008/050504 2007-06-26 2008-06-26 Filtering system with means for purging the system WO2009001142A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0712368.0 2007-06-26
GB0712368A GB2450501B (en) 2007-06-26 2007-06-26 Filtering and purging system

Publications (1)

Publication Number Publication Date
WO2009001142A1 true WO2009001142A1 (en) 2008-12-31

Family

ID=38352940

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2008/050504 WO2009001142A1 (en) 2007-06-26 2008-06-26 Filtering system with means for purging the system

Country Status (2)

Country Link
GB (1) GB2450501B (en)
WO (1) WO2009001142A1 (en)

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USD1010454S1 (en) 2021-09-03 2024-01-09 Graham Packaging Company, L.P. Container

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GB2472370B (en) * 2009-03-16 2011-11-02 Jane Wilson Improved external filter structure for aquatics tanks
GB2480866B (en) * 2010-06-04 2015-07-15 Adey Holdings 2008 Ltd Method of flushing a central heating system
GB2482001A (en) 2010-07-14 2012-01-18 Balvinder Singh Nagi Fluid filter
FR2982502B1 (en) * 2011-11-14 2014-04-25 Aqua Tech CLOSER / CLARIFIER FILTER FOR CLOSED FLUID CIRCUIT AND ASSOCIATED METHOD FOR FLUID FIRM CIRCUIT DISEMBLING
GB201213070D0 (en) * 2012-07-23 2012-09-05 Harnett Tyronne G Fluid diverter for particulate capture
GB201218134D0 (en) * 2012-10-10 2012-11-21 Harnett Tyronne G Dual action fluid diffuser
CN102989254A (en) * 2012-12-14 2013-03-27 龙口矿业集团有限公司 Air inlet filter device of pneumatic diaphragm pump
GB2551828B (en) * 2016-06-30 2021-02-24 Adey Holdings 2008 Ltd Magnetic filter for a central heating system
GB2620475A (en) * 2023-04-27 2024-01-10 Innovative Heating Solutions Ltd Fluid inspection apparatus

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US3684096A (en) * 1970-09-24 1972-08-15 Whirlpool Co Expandable spiral filter
US4529517A (en) * 1982-03-12 1985-07-16 Bertil Carlvret Arrangement for cleaning a liquid containing particles
US5556540A (en) * 1994-06-30 1996-09-17 Brunsting; William J. Magnetic assembly for a closed pressurized flow path of lubricating oil
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Publication number Priority date Publication date Assignee Title
USD1003725S1 (en) 2021-09-03 2023-11-07 Graham Packaging Company, L.P. Container
USD1010454S1 (en) 2021-09-03 2024-01-09 Graham Packaging Company, L.P. Container

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Publication number Publication date
GB0712368D0 (en) 2007-08-01
GB2450501A (en) 2008-12-31
GB2450501B (en) 2011-10-12

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