WO2024013516A1 - Connector fitting - Google Patents

Connector fitting Download PDF

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Publication number
WO2024013516A1
WO2024013516A1 PCT/GB2023/051856 GB2023051856W WO2024013516A1 WO 2024013516 A1 WO2024013516 A1 WO 2024013516A1 GB 2023051856 W GB2023051856 W GB 2023051856W WO 2024013516 A1 WO2024013516 A1 WO 2024013516A1
Authority
WO
WIPO (PCT)
Prior art keywords
outlet
inlet
magnetic filter
pump
port
Prior art date
Application number
PCT/GB2023/051856
Other languages
French (fr)
Inventor
Simon Downie
Original Assignee
Adey Holdings (2008) Limited
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 Adey Holdings (2008) Limited filed Critical Adey Holdings (2008) Limited
Publication of WO2024013516A1 publication Critical patent/WO2024013516A1/en

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Classifications

    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0009—Settling tanks 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
    • B01D35/06—Filters making use of electricity or magnetism
    • 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
    • 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
    • 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
    • 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
    • B03C1/32—Magnetic separation acting on the medium containing the substance being separated, e.g. magneto-gravimetric-, magnetohydrostatic-, or magnetohydrodynamic separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F16L41/03—Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
    • 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
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • 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
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/105—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system pumps combined with multiple way valves
    • 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
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1083—Filling valves or arrangements for filling

Definitions

  • the present invention relates to a connector fitting for connecting a magnetic filter to heating and/or cooling systems, and a method for retrofitting a magnetic filter into a heating and/or cooling system.
  • Magnetic filters are now commonly used in heating and/or cooling systems to attract and retain magnetic particles which can be picked up from radiators and other devices within the circuit. This allows the magnetic particles to be removed from the system and prevents them from damaging heating and/or cooling system components such as pumps, heat exchangers and other components. This can improve the performance of the system.
  • Various different types of filters are known in the art that are suitable for use in heating and/or cooling systems.
  • a heating system with a “system boiler” (as opposed to a “combi boiler”) has an external pump for circulating the fluid around the heating system.
  • the boiler is often located in the kitchen and the pump is often located in an airing cupboard separate from the kitchen in a domestic installation.
  • Various different sizes of pumps are known in the art but a 180mm pump is commonly found in many heating and/or cooling systems, i.e., 180mm is the “pipe-to-pipe” length, between the inlet to the pump and the outlet from the pump.
  • a connector fitting for connecting a magnetic filter to heating and/or cooling systems comprising: a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body for connecting to a system pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; and a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet, the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other, and in which the second inlet and second outlet are in line with each other and perpendicular to the first inlet
  • An old heating and/or cooling system may be retrofitted with a magnetic filter using the connector fitting of the invention.
  • the connector fitting can be installed by directly connecting it to a pump, with the connection to the system circuit and the connection to the pump being in-line. Therefore, hardly any alteration of the system pipework is required to add the magnetic filter.
  • the distance between the first inlet and first outlet is short, preferably about 50mm. Therefore, a 180mm pump for example can be replaced with a 130mm pump plus the connector fitting, and the combination of the smaller pump and the connector fitting will connect to the existing pipework which used to connect the 180mm pump.
  • the magnetic filter can be easily connected to the system circuit for removing magnetic particles flowing in the water within the system circuit.
  • the magnetic filter can attract and retain the magnetic particles for removal from the system. This can prevent system components such as pumps, boilers, heat exchangers and other components from being damaged by the magnetic particles. Removing the magnetic particles that can damage the system components can improve the performance of the system and prolong the life of the system components.
  • a pump in the system circuit may be simply replaced with a slightly smaller pump to create a small space or gap in between the pump and a system circuit pipe.
  • the connector fitting is provided in this space and can be used to connect to the filter.
  • a 180 mm pump can be replaced with a 130 mm pump and this can provide a space not available for use previously to connect the magnetic filter to the system circuit.
  • the connector fitting completely fills the space in between the system circuit pipe and the pump, when the pump is replaced with a smaller pump. Therefore, no extra pipework is required.
  • the connector fitting may be made from metal, for example from brass, or from plastics, for example reinforced nylon.
  • the addition of the connector fitting between the pump and the system circuit allows the magnetic filter to be connected to the system circuit in such a way that the pipework in the system circuit does not need to be re-arranged or changed to accommodate for the magnetic filter. This means that it can also efficiently make use of the tight space in a cupboard where the pump is located to accommodate for the magnetic filter.
  • the connector fitting includes a connector body. This may be the main part of the connector fitting that fills the space or gap in between the system circuit pipe and the pump.
  • the connector body allows the flow of water from the system circuit, through the filter, to the pump.
  • the first inlet may be provided on the connector body of the connector fitting.
  • the first inlet may be provided in the form of an aperture in the connector body. The first inlet allows the connector body to be connected to the system circuit. This allows water to flow from the system circuit pipe to the connector body of the connector fitting.
  • the first inlet may be provided as a flange.
  • An outer surface of the first inlet flange may be threaded with a %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread. This may allow the first inlet to be connected to the system circuit pipe.
  • the first outlet may be provided on the connector body. This may be an aperture on the connector body disposed on the opposite side to the first inlet.
  • the first outlet allows the connector body to be connected to the pump. This may allow the water flowing from the connector body to flow through the first outlet to the pump.
  • the first outlet may be a flange.
  • a union nut may be provided on the first outlet flange.
  • the union nut may be threaded with a %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread.
  • the union nut allows the pump to be connected to the first outlet since a %” BSPP (26.4 mm major diameter I 24.1 minor diameter) connection is commonly used for central heating system pumps.
  • the first inlet and the first outlet are in line with each other.
  • the direction of flow into the first inlet and out of the first outlet is the same direction, along the same line.
  • this allows the first inlet and the first outlet of the connector fitting to be aligned with the system circuit pipe and the pump. Therefore, the connector fitting can easily be placed in the space between the system circuit pipe and the pump without needing to re-arrange or change the pipework in the system circuit to accommodate for the connector fitting.
  • the inlet is connected to the system circuit and the outlet to be connected to the pump, in order that the magnetic filter is in the circuit before the pump, to protect the pump from magnetic debris, in some retrofit installations it may prove easier to install the magnetic filter after the pump, so that the side of the connector fitting connected to the pump is used as an inlet (to the connector fitting).
  • the distance between the first inlet and the first outlet may be less than 70 mm, preferably less than 60 mm, and more preferably around 50 mm.
  • the second outlet may be provided on the connector body. This may be an aperture on the connector body disposed in between the first inlet and the first outlet.
  • the second outlet allows the connector body to be connected to the magnetic filter. This allows the water flowing into the connector body from the system circuit to flow to the magnetic filter so that the magnetic particles in the water can be removed.
  • the second inlet may be provided on the connector body. This may be an aperture on the connector body disposed on the opposite side to the second outlet, in between the first inlet and the first outlet.
  • the second inlet allows the connector body to be connected to the magnetic filter. This may allow the water flowing from the magnetic filter to flow to the connector body.
  • the second inlet and the second outlet are in line with each other.
  • the apertures of the second inlet and the second outlet may be positioned in such a way that they are aligned to each other or placed in a straight line.
  • the direction of flow into the second inlet may be the same as the direction of flow out of the second outlet.
  • this allows the second inlet and the second outlet to be positioned along the same length of the connector body in between the first inlet and first outlet allowing them to be used to connect to the magnetic filter.
  • a length of the connector fitting between the first inlet and the first outlet may be shorter than a length of the connector fitting between the second inlet and the second outlet.
  • this allows the second inlet and the second outlet to extend away from the centre of the connector fitting. This allows easier access to the second inlet and the second outlet for connection to the magnetic filter since they are positioned in a way such that they can be easily reached and without the pump getting in the way, when the first inlet and the first outlet are connected to the system circuit pipe and the pump.
  • the second inlet and second outlet may include push fit pipe fittings, for example 22 mm push-fit fittings. This allows pipes that connect to the magnetic filter to be connected to the second inlet and second outlet of the connector fitting to allow the flow of water between the magnetic filter and connector fitting.
  • the first flow passage of the connector body connects the first inlet to the second outlet of the connector fitting. This allows the water flowing from the system circuit to flow to the magnetic filter for removing magnetic particles from the water.
  • the second flow passage of the connector body connects the second inlet to the first outlet. This allows the filtered water from the magnetic filter to flow through the connector body to the pump.
  • the first and second flow passages are separated by a barrier to prevent flow between the first and second flow passages within the connector body. This means that the filtered water from the magnetic filter does not mix with the water that still needs to be filtered. Therefore, only the filtered water can flow out of the connector body to the pump. The water flows from the first inlet, through the filter, then through the pump, and then continues around the central heating system circuit.
  • a connector fitting for connecting a magnetic filter to a heating and/or cooling system which comprises a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body for connecting to a system pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet; and the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other; a pipe connecting to the second inlet of the connector fitting for connecting to the magnetic filter
  • connection fitting forming part of the second aspect of the present invention may incorporate any of the features of the first aspect of the present invention, as described above.
  • the pipe connecting the second inlet of the connector fitting to a magnetic filter and the further pipe connecting the second outlet to the magnetic filter may be identical pipes.
  • Each pipe may be substantially U-shaped, having two parallel arms and a link between the two parallel arms.
  • Connector fitting ends of the two pipes face each other to connect to the second inlet and second outlet of the connector fitting, and filter connection ends of the pipes likewise face each other to connect to the magnetic filter, the magnetic filter having an in-line inlet and outlet.
  • a connector fitting for connecting a magnetic filter to a heating and/or cooling system which comprises: a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body for connecting to a system pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet; and the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other; a magnetic filter having an inlet and an outlet for allowing flow of water through
  • the connector fitting and pipes forming part of the third aspect of the present invention may incorporate any of the features of the first and second aspects of the present invention.
  • the magnetic filter may be substantially cylindrical with its length (i.e., along the longitudinal axis of the cylinder) running substantially parallel to the system circuit pipe, in which the flow of water through the magnetic filter is coming in from the system circuit pipe and out to the pump, and in which the inlet and outlet of the magnetic filter are in line with each other. Aligning the inlet and outlet of the magnetic filter allows the pipe and the further pipe to be connected to the magnetic filter easily.
  • an arrangement comprising: a pump having an inlet and an outlet and having a length between the inlet and the outlet; a connector fitting for connecting a magnetic filter to a heating and/or cooling system, which comprises: a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body connecting to the pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet; and the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being
  • the length between the inlet and outlet of the pump may be for example around 130 mm.
  • the length of the connector fitting between the first inlet and the first outlet may be for example around 50mm. Therefore, the length of the two parts in combination may be around 180mm. This is the same length as many pumps fitted in central heating systems, and therefore the whole pump and connector fitting arrangement can be fitted easily to existing pipework, simply by removing the pump and replacing it with the arrangement of the invention.
  • a method of retrofitting a magnetic filter into a heating and/or cooling system the system having a system circuit and an old pump in the system circuit, and the pump having a pump inlet and a pump outlet, the pump inlet and the pump outlet being in-line with each other, and the pump having a first length between the pump inlet and the pump outlet
  • the method comprising the steps of: removing the old pump from the system, to leave a first open pipe end and a second open pipe end, and a break in the system circuit between the first open pipe and the second open pipe end; providing a new pump, the new pump having a new pump inlet and a new pump outlet in-line with each other and the new pump having a second length between the new pump inlet and the new pump outlet, the second length being shorter than the first length; connecting the new pump to the first open pipe end; installing a connector fitting between the second open pipe end and the new pump, the connector fitting comprising: a connector body; a first port on the
  • the second length of the new pump may be for example around 130 mm.
  • the first length of the old pump may be for example around 180mm.
  • the length of the connector fitting between the first port and the second port is the same as the difference between the first length of the old pump and the second length of the new pump.
  • the distance between the first port and the second port of the connector fitting may be less than 70 mm, preferably less than 60 mm, and more preferably around 50 mm.
  • the second length of the new pump and the distance between the first port and the second port may allow the connector fitting to be placed in between the second open pipe and the new pump so that the magnetic filter can be connected to the connector fitting and installed as part of the system circuit. Because the overall length of the new pump and the connector fitting is the same as the length of the old pump, this can be done without changing the pipework forming the system circuit.
  • the first port may be provided as a flange. An outer surface of the first port flange may be threaded with a %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread. This may allow the first port to be connected to the system circuit. This allows water to flow from a system circuit pipe to the connector body of the connector fitting.
  • the second port may be provided as a flange.
  • a union nut may be provided on the second port flange.
  • the union nut may be threaded with a %” BSPP (26.4 mm major diameter I 24.1 minor diameter) thread.
  • the union nut allows the new pump to be connected to the second port since the %” (26.4 mm major diameter I 24.1 minor diameter) thread is a common connection used for central heating system pumps, and so allows the retrofitting operation to be completed without changing any connections on the system circuit pipes.
  • the second port allows the water flowing from the connector body to flow through the second port and to the new pump.
  • the first port and the second port are in line with each other meaning that they are positioned in such a way that they are aligned to each other or placed in a straight line.
  • the direction of flow into the first port and out of the second port is the same direction, along the same line.
  • this allows the first port and the second port of the connector fitting to be aligned with the system circuit pipe and the new pump. Therefore, the connector fitting can easily be placed in the space between the system circuit pipe and the new pump without needing to re-arrange or change the pipework in the system circuit to accommodate for the connector fitting.
  • the third port and the fourth port may be disposed between the first port and the second port.
  • the third port and the fourth port may include push fit pipe fittings, for example 22 mm push fit fittings.
  • the push fit fittings allow pipes to be connected to the third and fourth ports for allowing water to flow in and out of the magnetic filter.
  • a length of the connector fitting between the first port and the second port may be shorter than a length of the connector fitting between the third port and the fourth port.
  • this allows the third port and the fourth port to extend away from the centre of the connector fitting. This allows easier access to the third port and the fourth port for connection to the magnetic filter since they are positioned in a way such that they can be easily reached and without the new pump getting in the way, when the first port and the second port are connected to the system circuit pipe and the new pump.
  • the magnetic filter may be substantially cylindrical with its length (i.e., along the longitudinal axis of the cylinder) running substantially parallel to the system circuit pipe, in which the flow of water through the magnetic filter is coming from the system circuit pipe, through the magnetic filter, and then to the new pump, and in which the first port and second port of the magnetic filter are in line with each other.
  • a pipe may be used to connect the third port of the connector fitting to the second filter port.
  • a further pipe may be used to connect the fourth port of the connector fitting to the first filter port.
  • Each pipe may be substantially U-shaped, having two parallel arms and a link between the two parallel arms. Connector fitting ends of the two pipes face each other to connect to the third port and fourth port of the connector fitting, and filter connection ends of the pipes likewise face each other to connect to the magnetic filter,
  • the magnetic filter is installed in the heating system circuit before the new pump, to protect the new pump.
  • the connector fitting is connected directly to the inlet of the new pump.
  • the magnetic filter could be after the new pump, with the new pump outlet connected to the connector fitting. This is less preferred since less protection from magnetic debris is provided to the new pump itself. However, in some installations where space is particularly tight, having the option to install the magnetic filter after the new pump may be useful.
  • Figure 1 shows a schematic of a heating and/or cooling system circuit
  • Figure 2 shows a perspective view of a connector fitting connected to a system circuit pipe, a pump, a magnetic filter and pipes connecting the magnetic filter to the connector fitting;
  • Figure 3 shows a top view of the connector fitting connected to the system circuit pipe, pump, magnetic filter and pipes connecting the magnetic filter to the connector fitting;
  • Figure 4 shows a cross-section through the connector fitting and pipes connecting the magnetic filter to the connector fitting.
  • FIG. 1 a schematic of a heating and/or cooling system 10 is shown.
  • a boiler 12 is used to heat up the water within the system circuit.
  • the boiler 12 is often located downstairs in the kitchen in a domestic installation.
  • the water from the boiler 12 flows through a pump 14 external from the boiler, for circulating the water around the system 10.
  • the pump 14 is often located in an airing cupboard separate from the kitchen.
  • the space between the boiler 12 and the pump 14 can be utilised to retrofit the system 10 to include a magnetic filter 26 (shown in Figure 2) that can remove magnetic particles from the water to prevent the magnetic particles from damaging system components such as the boiler 12 and pump 14.
  • a magnetic filter 26 shown in Figure 2
  • the pipework may run through conduits, close to shelves, etc. and there may not be an obvious space to install a magnetic filter. Even if there is space, installing a magnetic filter will normally require some cutting, bending or modification of the heating system pipework.
  • the water passing through the pump 14 then flows through a three-position valve 16 that diverts the flow of water to a cylinder 18 and/or a radiator 20.
  • the radiator 20 heats the air in a room using convection to transfer heat from the radiator 20 to the surrounding air.
  • the cylinder 18 heats hot water for baths, showers, etc.
  • the water then flows from the cylinder 18 and the radiator 20 back to the boiler 12 to be heated up again.
  • FIG. 2 a perspective view of part of a heating and/or cooling system 10 that has been retrofitted is shown.
  • the old pump 14 (shown in Figure 1) is typically a 180 mm pump.
  • This pump 14 can be replaced with a smaller pump 22 for example, a 130 mm pump thereby creating a space or gap between a system circuit pipe 24 and a new pump 22 of around 50 mm.
  • a connector fitting 28 can be provided in this space between the system circuit pipe 24 and the pump 22, so that it can be used to connect the magnetic filter 26 in the system circuit.
  • the connector fitting 28 has a connector body 30 which is the main part of the connector fitting 28 that fills the space in between the system circuit pipe 24 and the pump 22.
  • the connector body 28 allows the flow of water from the system circuit pipe 24, through the magnetic filter 26, to the pump 22.
  • a first inlet 32 on the connector body 30 connects the connector body 30 to the system circuit pipe 24 to allow the water to flow from the system circuit pipe 24 to the connector body 30 of the connector fitting 28.
  • a first outlet 34 on the connector body 30 is disposed on the opposite side to the first inlet 32.
  • the first inlet 32 and the first outlet 34 are positioned in line with each other.
  • the first outlet 34 connects the connector body 30 to the pump 22.
  • the distance in between the first inlet and the first outlet is around 50 mm, i.e., the same as the difference between the pipe-to-pipe length of the old pump and the pipe-to-pipe length of the new pump.
  • the first inlet 32 is provided as a flange, having a larger outer diameter compared to the outer diameter of the intermediate part of the connector body 30 in between the first inlet 32 and the first outlet 34.
  • An outer surface of the first inlet flange 32 is threaded with a %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread.
  • the first outlet 34 is provided as a flange.
  • a union nut 48 is provided on the first outlet flange 34.
  • the union nut 48 is threaded with %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread. This allows the first outlet 34 of the connector fitting 28 to be connected to the pump 22 easily since typically, pumps have a pump inlet 44 and a pump outlet 46 with a %” BSPP (26.4 mm major diameter/ 24.1 minor diameter) thread.
  • a second outlet 36 on the connector body 30 is disposed in between the first inlet 32 and the first outlet 34. This allows the water flowing into the connector body 30 from the system circuit pipe 24 to flow to the magnetic filter 26.
  • the magnetic filter 26 attracts and retains the magnetic particles in the water flowing through the magnetic filter 26.
  • a pipe 40 connects the second outlet 36 of the connector fitting 28 to a filter inlet 50 on the magnetic filter 26.
  • the pipe 40 is substantially U-shaped having two parallel arms, the two parallel arms being an arm with a connector fitting end 40a and an arm with a filter connection end 40b, and a link 40c between the two parallel arms 40a, 40b.
  • the water flows from the second outlet 36 through the pipe 40 and to the magnetic filter 26.
  • a second inlet 38 on the connector body 30 is disposed on the opposite side of the connector body 30 to the second outlet 36, in between the first inlet 32 and the first outlet 34. This allows the water flowing from the magnetic filter 26 to flow through the second inlet 38 to the connector body 30.
  • the second inlet 38 and the second outlet 36 are in line with each other and perpendicular to the first inlet 32 and the first outlet 34.
  • a length of the connector fitting 28 between the first inlet 32 and the first outlet 34 is shorter than a length of the connector fitting 28 between the second inlet 38 and the second outlet 36.
  • a further pipe 42 connects a filter outlet 52 of the magnetic filter 26 to the second inlet 38 of the connector fitting 28.
  • the further pipe 42 is an identical pipe to the pipe 40. It is also substantially U-shaped having two parallel arms, the two parallel arms being an arm with a connector fitting end 42a and an arm with a filter connection end 42b, and a link 42c between the two parallel arms 42a, 42b.
  • Connector fitting ends of the two pipes 40, 42 face each other to connect to the connector body 30.
  • the connector fitting end of the arm 40a connects to the second outlet 36 and the connector fitting end of the arm 42a connects to the second inlet 38 of the connector fitting 28.
  • the filter connection ends of the pipes 40, 42 likewise face each other to connect to the magnetic filter 26.
  • the filter connection end of the arm 40b connects to the filter inlet 50 and the filter connection end of the arm 42b connects to the filter outlet 52 of the magnetic filter 26.
  • the connector fitting ends of the arms 40a, 42a are in line with each other and the filter connection ends of the arms 40b, 42b are also in line with each other.
  • the parallel arms 40a, 40b of the pipe 40 and the parallel arms 42a, 42b of the further pipe 42 extend away from the connector body 30 and/or the magnetic filter 26 in a direction perpendicular to the system circuit pipe 24.
  • the link 40c between the two parallel arms 40a, 40b of the pipe 40 and the link between the two parallel arms 42a, 40b of the further pipe 42 are perpendicular to the parallel arms.
  • the second inlet 38 and the second outlet 36 of the connector fitting 28 have push fit pipe fittings for example, a 22 mm push fit fitting to insert and securely attach the pipe 40 and the further pipe 42 to the second inlet 38 and the second outlet 36.
  • a valve 54 is provided on each of the filter inlet 50 and filter outlet 52 of the magnetic filter 26. The valves 54 are used to control the flow of water in and out of the magnetic filter 26. For example, they can be used to stop the flow of water through the magnetic filter 26 so the magnetic filter 26 can be cleaned by opening the magnetic filter 26 and removing the magnetic particles retained inside.
  • the pump 22 and connector fitting 28 are positioned in a way such that the first inlet 32 and the first outlet 34 of the connector fitting 28, and the pump inlet 44 and pump outlet 46 are all in line with each other so that they can be easily attached to the system circuit or the system circuit pipe 24 without needing to change the position of the pipework.
  • a dosing port 55 is provided at the top of the magnetic filter 26.
  • the dosing port 55 can be conveniently used to dose the central heating system with a chemical, for example a corrosion inhibitor.
  • FIG. 3 a top view of a heating and/or cooling system 10 that has been retrofitted is shown.
  • the pump 22, connector fitting (mostly obscured in Figure 3) and the system circuit pipe 24 are all in line with each other.
  • the magnetic filter 26 is substantially cylindrical and it is positioned in a way such that its length (i.e., longitudinal axis of the cylinder) runs substantially parallel to the system circuit pipe 24.
  • the filter inlet 50 and the filter outlet 52 are in line with each other allowing them to connect to the filter ends of the arms 40b, 42b of pipes 40, 42 which are also in line with each other.
  • the parallel arms 40a, 42a of the pipe 40 and further pipe 42 with the filter connection ends both extend away from the filter in a direction perpendicular to the length of the cylindrical body of the magnetic filter 26.
  • valves 54 provided on each of the filter inlet 50 and filter outlet 52 of the magnetic filter 26 are in line with each other and are each disposed on either side of the magnetic filter 26, the sides of the magnetic filter 26 being in the direction parallel to the cylindrical body of the magnetic filter 26.
  • the connector body 30 of the connector fitting 28 has a barrier 56 that separates a first flow passage connecting the first inlet 32 to the second outlet 36 of the connector fitting 28, and a second flow passage connecting the second inlet 38 to the first outlet 34 of the connector fitting 28.
  • the barrier 56 is a thin material of the connector body 30 that starts from one side of the first inlet 32 and ends on the opposite side of the first outlet 34 creating a diagonal barrier in the centre of the connector body 30. The barrier prevents the flow of water between the first and second flow passages within the connector body 30.
  • the two ends of the connector body 30 in which the second inlet 38 and the second outlet 36 are each disposed, have a staggered increase in their inner and outer diameter compared to the outer and inner diameter of the intermediate part of the connector body 28 between the second inlet 38 and the second outlet 36. This allows the pipe 40 to be inserted into the second outlet 36 and the further pipe 42 to be inserted into the second inlet 38. This allows the pipes 40, 42 to be securely attached within the push fit fittings for example, a 22 mm push fit fitting.

Abstract

A connector fitting is disclosed for connecting a magnetic filter to heating and/or cooling systems. The connector fitting comprises a connector body, a first inlet for connecting to a system circuit, a first outlet for connecting to a system pump, a second outlet for allowing flow of water from the connector body to a magnetic filter, and a second inlet for allowing flow of water from the magnetic filter to the connector body, in which the first inlet and the first outlet are in line with each other, and in which the second inlet and the second outlet are in line with each other and perpendicular to the first inlet and first outlet. The connector body has a first flow passage for connecting the first inlet to the second outlet and a second flow passage for connecting the second inlet to the first outlet, where the first and second flow passages are separated by a barrier to prevent flow between the first and second flow passages within the connector body. A method for retrofitting a magnetic filter into a heating and/or cooling system using a connector fitting is also disclosed.

Description

CONNECTOR FITTING
The present invention relates to a connector fitting for connecting a magnetic filter to heating and/or cooling systems, and a method for retrofitting a magnetic filter into a heating and/or cooling system.
BACKGROUND TO THE INVENTION
Magnetic filters are now commonly used in heating and/or cooling systems to attract and retain magnetic particles which can be picked up from radiators and other devices within the circuit. This allows the magnetic particles to be removed from the system and prevents them from damaging heating and/or cooling system components such as pumps, heat exchangers and other components. This can improve the performance of the system. Various different types of filters are known in the art that are suitable for use in heating and/or cooling systems.
A heating system with a “system boiler” (as opposed to a “combi boiler”) has an external pump for circulating the fluid around the heating system. The boiler is often located in the kitchen and the pump is often located in an airing cupboard separate from the kitchen in a domestic installation. Various different sizes of pumps are known in the art but a 180mm pump is commonly found in many heating and/or cooling systems, i.e., 180mm is the “pipe-to-pipe” length, between the inlet to the pump and the outlet from the pump.
Due to the restricted space in which the boiler and/or the pump are located, it is not always possible to find a space to include a magnetic filter for removing magnetic particles when retrofitting the system. Aesthetic considerations are also likely to place a constraint on the installer - i.e., the householder would probably prefer to have the filter installed out of sight, rather than on the wall in the kitchen. If a filter is not installed, the system components such as pumps, heat exchangers, boilers and other components can get damaged by the magnetic particles flowing in the water over time and need replacing frequently.
Furthermore, adding a magnetic filter in the system requires plumber(s) to be hired to do the work, and the installation cost can be quite expensive especially if the pipework needs to be replaced or re-arranged to accommodate the filter. It is an object of the present invention to reduce or substantially obviate the aforementioned problems by providing a method of retrofitting a central heating system with minimal or no alteration of the pipework, and a connector for use in such a method.
STATEMENT OF INVENTION
According to a first aspect of the present invention there is provided a connector fitting for connecting a magnetic filter to heating and/or cooling systems comprising: a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body for connecting to a system pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; and a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet, the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other, and in which the second inlet and second outlet are in line with each other and perpendicular to the first inlet and first outlet.
An old heating and/or cooling system may be retrofitted with a magnetic filter using the connector fitting of the invention. The connector fitting can be installed by directly connecting it to a pump, with the connection to the system circuit and the connection to the pump being in-line. Therefore, hardly any alteration of the system pipework is required to add the magnetic filter.
The distance between the first inlet and first outlet is short, preferably about 50mm. Therefore, a 180mm pump for example can be replaced with a 130mm pump plus the connector fitting, and the combination of the smaller pump and the connector fitting will connect to the existing pipework which used to connect the 180mm pump.
This allows the magnetic filter to be easily connected to the system circuit for removing magnetic particles flowing in the water within the system circuit. The magnetic filter can attract and retain the magnetic particles for removal from the system. This can prevent system components such as pumps, boilers, heat exchangers and other components from being damaged by the magnetic particles. Removing the magnetic particles that can damage the system components can improve the performance of the system and prolong the life of the system components.
Because minimal or no modification of the central heating system pipework is required when retrofitting the filter, using the connector fitting of the invention, the cost of installing a filter is significantly reduced.
A pump in the system circuit may be simply replaced with a slightly smaller pump to create a small space or gap in between the pump and a system circuit pipe. The connector fitting is provided in this space and can be used to connect to the filter. For example, a 180 mm pump can be replaced with a 130 mm pump and this can provide a space not available for use previously to connect the magnetic filter to the system circuit.
Preferably, the connector fitting completely fills the space in between the system circuit pipe and the pump, when the pump is replaced with a smaller pump. Therefore, no extra pipework is required.
The connector fitting may be made from metal, for example from brass, or from plastics, for example reinforced nylon.
Advantageously, the addition of the connector fitting between the pump and the system circuit allows the magnetic filter to be connected to the system circuit in such a way that the pipework in the system circuit does not need to be re-arranged or changed to accommodate for the magnetic filter. This means that it can also efficiently make use of the tight space in a cupboard where the pump is located to accommodate for the magnetic filter.
The connector fitting includes a connector body. This may be the main part of the connector fitting that fills the space or gap in between the system circuit pipe and the pump. The connector body allows the flow of water from the system circuit, through the filter, to the pump.
The first inlet may be provided on the connector body of the connector fitting. The first inlet may be provided in the form of an aperture in the connector body. The first inlet allows the connector body to be connected to the system circuit. This allows water to flow from the system circuit pipe to the connector body of the connector fitting.
The first inlet may be provided as a flange. An outer surface of the first inlet flange may be threaded with a %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread. This may allow the first inlet to be connected to the system circuit pipe.
The first outlet may be provided on the connector body. This may be an aperture on the connector body disposed on the opposite side to the first inlet. The first outlet allows the connector body to be connected to the pump. This may allow the water flowing from the connector body to flow through the first outlet to the pump.
The first outlet may be a flange. A union nut may be provided on the first outlet flange. The union nut may be threaded with a %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread. The union nut allows the pump to be connected to the first outlet since a %” BSPP (26.4 mm major diameter I 24.1 minor diameter) connection is commonly used for central heating system pumps.
The first inlet and the first outlet are in line with each other. This means that the apertures of the first inlet and the first outlet are positioned in such a way that they are aligned to each other or placed in a straight line. In particular, the direction of flow into the first inlet and out of the first outlet is the same direction, along the same line. Advantageously, this allows the first inlet and the first outlet of the connector fitting to be aligned with the system circuit pipe and the pump. Therefore, the connector fitting can easily be placed in the space between the system circuit pipe and the pump without needing to re-arrange or change the pipework in the system circuit to accommodate for the connector fitting.
Although it is preferred for the inlet to be connected to the system circuit and the outlet to be connected to the pump, in order that the magnetic filter is in the circuit before the pump, to protect the pump from magnetic debris, in some retrofit installations it may prove easier to install the magnetic filter after the pump, so that the side of the connector fitting connected to the pump is used as an inlet (to the connector fitting). The distance between the first inlet and the first outlet may be less than 70 mm, preferably less than 60 mm, and more preferably around 50 mm. This allows the connector fitting to fit in the space between the system circuit pipe and the pump, the space being created for example when an old pump is replaced with a smaller new pump (for example, a pump with 180mm pipe-to-pipe distance can be replaced by a 130mm pump, to create a 50mm space for the connector fitting while retaining the 180mm pipe-to-pipe distance and therefore not modifying the existing pipework).
The second outlet may be provided on the connector body. This may be an aperture on the connector body disposed in between the first inlet and the first outlet. The second outlet allows the connector body to be connected to the magnetic filter. This allows the water flowing into the connector body from the system circuit to flow to the magnetic filter so that the magnetic particles in the water can be removed.
The second inlet may be provided on the connector body. This may be an aperture on the connector body disposed on the opposite side to the second outlet, in between the first inlet and the first outlet. The second inlet allows the connector body to be connected to the magnetic filter. This may allow the water flowing from the magnetic filter to flow to the connector body.
The second inlet and the second outlet are in line with each other. This means that the apertures of the second inlet and the second outlet may be positioned in such a way that they are aligned to each other or placed in a straight line. In particular, the direction of flow into the second inlet may be the same as the direction of flow out of the second outlet. Advantageously, this allows the second inlet and the second outlet to be positioned along the same length of the connector body in between the first inlet and first outlet allowing them to be used to connect to the magnetic filter.
A length of the connector fitting between the first inlet and the first outlet may be shorter than a length of the connector fitting between the second inlet and the second outlet. Advantageously, this allows the second inlet and the second outlet to extend away from the centre of the connector fitting. This allows easier access to the second inlet and the second outlet for connection to the magnetic filter since they are positioned in a way such that they can be easily reached and without the pump getting in the way, when the first inlet and the first outlet are connected to the system circuit pipe and the pump. The second inlet and second outlet may include push fit pipe fittings, for example 22 mm push-fit fittings. This allows pipes that connect to the magnetic filter to be connected to the second inlet and second outlet of the connector fitting to allow the flow of water between the magnetic filter and connector fitting.
The first flow passage of the connector body connects the first inlet to the second outlet of the connector fitting. This allows the water flowing from the system circuit to flow to the magnetic filter for removing magnetic particles from the water.
The second flow passage of the connector body connects the second inlet to the first outlet. This allows the filtered water from the magnetic filter to flow through the connector body to the pump.
The first and second flow passages are separated by a barrier to prevent flow between the first and second flow passages within the connector body. This means that the filtered water from the magnetic filter does not mix with the water that still needs to be filtered. Therefore, only the filtered water can flow out of the connector body to the pump. The water flows from the first inlet, through the filter, then through the pump, and then continues around the central heating system circuit.
According to a second aspect of the present invention there is provided an arrangement comprising: a connector fitting for connecting a magnetic filter to a heating and/or cooling system, which comprises a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body for connecting to a system pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet; and the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other; a pipe connecting to the second inlet of the connector fitting for connecting to the magnetic filter; and a further pipe connecting to the second outlet of the connector fitting for connecting from the magnetic filter, the pipe and the further pipe having filter connection ends which face each other, for connection to the magnetic filter having an inlet and outlet.
The connection fitting forming part of the second aspect of the present invention may incorporate any of the features of the first aspect of the present invention, as described above.
The pipe connecting the second inlet of the connector fitting to a magnetic filter and the further pipe connecting the second outlet to the magnetic filter may be identical pipes. Each pipe may be substantially U-shaped, having two parallel arms and a link between the two parallel arms. Connector fitting ends of the two pipes face each other to connect to the second inlet and second outlet of the connector fitting, and filter connection ends of the pipes likewise face each other to connect to the magnetic filter, the magnetic filter having an in-line inlet and outlet.
According to a third aspect of the present invention there is provided an arrangement comprising: a connector fitting for connecting a magnetic filter to a heating and/or cooling system, which comprises: a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body for connecting to a system pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet; and the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other; a magnetic filter having an inlet and an outlet for allowing flow of water through the magnetic filter for filtering out magnetic particles from the water in a closed circuit; a pipe connecting the second outlet of the connector fitting to the inlet of magnetic filter; and a further pipe connecting the outlet of the magnetic filter to the second inlet of the connector fitting.
The connector fitting and pipes forming part of the third aspect of the present invention may incorporate any of the features of the first and second aspects of the present invention.
The magnetic filter may be substantially cylindrical with its length (i.e., along the longitudinal axis of the cylinder) running substantially parallel to the system circuit pipe, in which the flow of water through the magnetic filter is coming in from the system circuit pipe and out to the pump, and in which the inlet and outlet of the magnetic filter are in line with each other. Aligning the inlet and outlet of the magnetic filter allows the pipe and the further pipe to be connected to the magnetic filter easily.
Positioning the magnetic filter with its length running substantially parallel to the system circuit pipe may allow the magnetic filter to efficiently make use of the tight space in which it is installed. According to a fourth aspect of the present invention there is provided an arrangement comprising: a pump having an inlet and an outlet and having a length between the inlet and the outlet; a connector fitting for connecting a magnetic filter to a heating and/or cooling system, which comprises: a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body connecting to the pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet; and the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other; a magnetic filter having an inlet and an outlet for allowing flow of water through the magnetic filter for filtering out magnetic particles from the water in a closed circuit; a pipe connecting the second outlet of the connector fitting to the inlet of magnetic filter; and a further pipe connecting the outlet of the magnetic filter to the second inlet of the connector fitting. The fourth aspect of the present invention may incorporate any of the features of the first, second and third aspect of the present invention.
The length between the inlet and outlet of the pump may be for example around 130 mm. The length of the connector fitting between the first inlet and the first outlet may be for example around 50mm. Therefore, the length of the two parts in combination may be around 180mm. This is the same length as many pumps fitted in central heating systems, and therefore the whole pump and connector fitting arrangement can be fitted easily to existing pipework, simply by removing the pump and replacing it with the arrangement of the invention.
According to a fifth aspect of the present invention there is provided a method of retrofitting a magnetic filter into a heating and/or cooling system, the system having a system circuit and an old pump in the system circuit, and the pump having a pump inlet and a pump outlet, the pump inlet and the pump outlet being in-line with each other, and the pump having a first length between the pump inlet and the pump outlet, the method comprising the steps of: removing the old pump from the system, to leave a first open pipe end and a second open pipe end, and a break in the system circuit between the first open pipe and the second open pipe end; providing a new pump, the new pump having a new pump inlet and a new pump outlet in-line with each other and the new pump having a second length between the new pump inlet and the new pump outlet, the second length being shorter than the first length; connecting the new pump to the first open pipe end; installing a connector fitting between the second open pipe end and the new pump, the connector fitting comprising: a connector body; a first port on the connector body for connecting to the system circuit; a second port on the connector body for connecting to the new pump; a third port on the connector body fluidly connected to the first port for allowing flow of water from the first port, through to the third port, and to a magnetic filter; a fourth port on the connector body fluidly connected to the second port for allowing flow of water from the magnetic filter, through the fourth port and out of the second port; and the connector body having a first flow passage connecting the first port to the third port, and a second flow passage connecting the fourth port to the second port, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first port and second port are in line with each other; and installing a magnetic filter for filtering out magnetic particles from water in a closed circuit, the magnetic filter having a first filter port and a second filter port for allowing flow of water into and out of the magnetic filter, in which the fourth port of the connector fitting is connected with the first port of the magnetic filter, and the third port of the connector fitting is connected with the second port of the magnetic filter.
The second length of the new pump may be for example around 130 mm. The first length of the old pump may be for example around 180mm. Preferably the length of the connector fitting between the first port and the second port is the same as the difference between the first length of the old pump and the second length of the new pump.
The distance between the first port and the second port of the connector fitting may be less than 70 mm, preferably less than 60 mm, and more preferably around 50 mm.
The second length of the new pump and the distance between the first port and the second port may allow the connector fitting to be placed in between the second open pipe and the new pump so that the magnetic filter can be connected to the connector fitting and installed as part of the system circuit. Because the overall length of the new pump and the connector fitting is the same as the length of the old pump, this can be done without changing the pipework forming the system circuit. The first port may be provided as a flange. An outer surface of the first port flange may be threaded with a %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread. This may allow the first port to be connected to the system circuit. This allows water to flow from a system circuit pipe to the connector body of the connector fitting.
The second port may be provided as a flange. A union nut may be provided on the second port flange. The union nut may be threaded with a %” BSPP (26.4 mm major diameter I 24.1 minor diameter) thread. The union nut allows the new pump to be connected to the second port since the %” (26.4 mm major diameter I 24.1 minor diameter) thread is a common connection used for central heating system pumps, and so allows the retrofitting operation to be completed without changing any connections on the system circuit pipes. The second port allows the water flowing from the connector body to flow through the second port and to the new pump.
The first port and the second port are in line with each other meaning that they are positioned in such a way that they are aligned to each other or placed in a straight line. In particular, the direction of flow into the first port and out of the second port is the same direction, along the same line. Advantageously, this allows the first port and the second port of the connector fitting to be aligned with the system circuit pipe and the new pump. Therefore, the connector fitting can easily be placed in the space between the system circuit pipe and the new pump without needing to re-arrange or change the pipework in the system circuit to accommodate for the connector fitting.
The third port and the fourth port may be disposed between the first port and the second port. The third port and the fourth port may include push fit pipe fittings, for example 22 mm push fit fittings. The push fit fittings allow pipes to be connected to the third and fourth ports for allowing water to flow in and out of the magnetic filter.
A length of the connector fitting between the first port and the second port may be shorter than a length of the connector fitting between the third port and the fourth port. Advantageously, this allows the third port and the fourth port to extend away from the centre of the connector fitting. This allows easier access to the third port and the fourth port for connection to the magnetic filter since they are positioned in a way such that they can be easily reached and without the new pump getting in the way, when the first port and the second port are connected to the system circuit pipe and the new pump.
The magnetic filter may be substantially cylindrical with its length (i.e., along the longitudinal axis of the cylinder) running substantially parallel to the system circuit pipe, in which the flow of water through the magnetic filter is coming from the system circuit pipe, through the magnetic filter, and then to the new pump, and in which the first port and second port of the magnetic filter are in line with each other.
A pipe may be used to connect the third port of the connector fitting to the second filter port. A further pipe may be used to connect the fourth port of the connector fitting to the first filter port. Each pipe may be substantially U-shaped, having two parallel arms and a link between the two parallel arms. Connector fitting ends of the two pipes face each other to connect to the third port and fourth port of the connector fitting, and filter connection ends of the pipes likewise face each other to connect to the magnetic filter,
Preferably the magnetic filter is installed in the heating system circuit before the new pump, to protect the new pump. In other words, the connector fitting is connected directly to the inlet of the new pump.
Alternatively the magnetic filter could be after the new pump, with the new pump outlet connected to the connector fitting. This is less preferred since less protection from magnetic debris is provided to the new pump itself. However, in some installations where space is particularly tight, having the option to install the magnetic filter after the new pump may be useful.
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the present invention, and to show more clearly how it may be carried into effect, reference will now be made by way of example only to the accompanying drawings, in which:
Figure 1 shows a schematic of a heating and/or cooling system circuit;
Figure 2 shows a perspective view of a connector fitting connected to a system circuit pipe, a pump, a magnetic filter and pipes connecting the magnetic filter to the connector fitting;
Figure 3 shows a top view of the connector fitting connected to the system circuit pipe, pump, magnetic filter and pipes connecting the magnetic filter to the connector fitting; and
Figure 4 shows a cross-section through the connector fitting and pipes connecting the magnetic filter to the connector fitting. DESCRIPTION OF PREFERRED EMBODIMENTS
Referring firstly to Figure 1 , a schematic of a heating and/or cooling system 10 is shown. A boiler 12 is used to heat up the water within the system circuit. The boiler 12 is often located downstairs in the kitchen in a domestic installation. The water from the boiler 12 flows through a pump 14 external from the boiler, for circulating the water around the system 10. The pump 14 is often located in an airing cupboard separate from the kitchen.
The space between the boiler 12 and the pump 14 can be utilised to retrofit the system 10 to include a magnetic filter 26 (shown in Figure 2) that can remove magnetic particles from the water to prevent the magnetic particles from damaging system components such as the boiler 12 and pump 14. However, there may be a very restricted space in the cupboard where the pump 14 is located to fit a magnetic filter in the current configuration of the system 10. The pipework may run through conduits, close to shelves, etc. and there may not be an obvious space to install a magnetic filter. Even if there is space, installing a magnetic filter will normally require some cutting, bending or modification of the heating system pipework.
The water passing through the pump 14 then flows through a three-position valve 16 that diverts the flow of water to a cylinder 18 and/or a radiator 20. The radiator 20 heats the air in a room using convection to transfer heat from the radiator 20 to the surrounding air. The cylinder 18 heats hot water for baths, showers, etc. The water then flows from the cylinder 18 and the radiator 20 back to the boiler 12 to be heated up again.
Note that other layouts of heating system exist including “S plan” systems using separate valves for heating and hot water, semi-gravity systems where the hot water loop is not pumped, and other variations. However, the invention is potentially useful in any system which uses a pump external to the boiler.
Referring to Figure 2, a perspective view of part of a heating and/or cooling system 10 that has been retrofitted is shown. The old pump 14 (shown in Figure 1) is typically a 180 mm pump. This pump 14 can be replaced with a smaller pump 22 for example, a 130 mm pump thereby creating a space or gap between a system circuit pipe 24 and a new pump 22 of around 50 mm. A connector fitting 28 can be provided in this space between the system circuit pipe 24 and the pump 22, so that it can be used to connect the magnetic filter 26 in the system circuit. The connector fitting 28 has a connector body 30 which is the main part of the connector fitting 28 that fills the space in between the system circuit pipe 24 and the pump 22. The connector body 28 allows the flow of water from the system circuit pipe 24, through the magnetic filter 26, to the pump 22.
A first inlet 32 on the connector body 30 connects the connector body 30 to the system circuit pipe 24 to allow the water to flow from the system circuit pipe 24 to the connector body 30 of the connector fitting 28.
A first outlet 34 on the connector body 30 is disposed on the opposite side to the first inlet 32. The first inlet 32 and the first outlet 34 are positioned in line with each other. The first outlet 34 connects the connector body 30 to the pump 22. The distance in between the first inlet and the first outlet is around 50 mm, i.e., the same as the difference between the pipe-to-pipe length of the old pump and the pipe-to-pipe length of the new pump.
The first inlet 32 is provided as a flange, having a larger outer diameter compared to the outer diameter of the intermediate part of the connector body 30 in between the first inlet 32 and the first outlet 34.
An outer surface of the first inlet flange 32 is threaded with a %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread.
The first outlet 34 is provided as a flange. A union nut 48 is provided on the first outlet flange 34. The union nut 48 is threaded with %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread. This allows the first outlet 34 of the connector fitting 28 to be connected to the pump 22 easily since typically, pumps have a pump inlet 44 and a pump outlet 46 with a %” BSPP (26.4 mm major diameter/ 24.1 minor diameter) thread.
A second outlet 36 on the connector body 30 is disposed in between the first inlet 32 and the first outlet 34. This allows the water flowing into the connector body 30 from the system circuit pipe 24 to flow to the magnetic filter 26. The magnetic filter 26 attracts and retains the magnetic particles in the water flowing through the magnetic filter 26.
A pipe 40 connects the second outlet 36 of the connector fitting 28 to a filter inlet 50 on the magnetic filter 26. The pipe 40 is substantially U-shaped having two parallel arms, the two parallel arms being an arm with a connector fitting end 40a and an arm with a filter connection end 40b, and a link 40c between the two parallel arms 40a, 40b. The water flows from the second outlet 36 through the pipe 40 and to the magnetic filter 26.
A second inlet 38 on the connector body 30 is disposed on the opposite side of the connector body 30 to the second outlet 36, in between the first inlet 32 and the first outlet 34. This allows the water flowing from the magnetic filter 26 to flow through the second inlet 38 to the connector body 30.
The second inlet 38 and the second outlet 36 are in line with each other and perpendicular to the first inlet 32 and the first outlet 34. A length of the connector fitting 28 between the first inlet 32 and the first outlet 34 is shorter than a length of the connector fitting 28 between the second inlet 38 and the second outlet 36.
A further pipe 42 connects a filter outlet 52 of the magnetic filter 26 to the second inlet 38 of the connector fitting 28. The further pipe 42 is an identical pipe to the pipe 40. It is also substantially U-shaped having two parallel arms, the two parallel arms being an arm with a connector fitting end 42a and an arm with a filter connection end 42b, and a link 42c between the two parallel arms 42a, 42b.
Connector fitting ends of the two pipes 40, 42 face each other to connect to the connector body 30. The connector fitting end of the arm 40a connects to the second outlet 36 and the connector fitting end of the arm 42a connects to the second inlet 38 of the connector fitting 28. The filter connection ends of the pipes 40, 42 likewise face each other to connect to the magnetic filter 26. The filter connection end of the arm 40b connects to the filter inlet 50 and the filter connection end of the arm 42b connects to the filter outlet 52 of the magnetic filter 26. The connector fitting ends of the arms 40a, 42a are in line with each other and the filter connection ends of the arms 40b, 42b are also in line with each other.
The parallel arms 40a, 40b of the pipe 40 and the parallel arms 42a, 42b of the further pipe 42 extend away from the connector body 30 and/or the magnetic filter 26 in a direction perpendicular to the system circuit pipe 24. The link 40c between the two parallel arms 40a, 40b of the pipe 40 and the link between the two parallel arms 42a, 40b of the further pipe 42 are perpendicular to the parallel arms.
The second inlet 38 and the second outlet 36 of the connector fitting 28 have push fit pipe fittings for example, a 22 mm push fit fitting to insert and securely attach the pipe 40 and the further pipe 42 to the second inlet 38 and the second outlet 36. A valve 54 is provided on each of the filter inlet 50 and filter outlet 52 of the magnetic filter 26. The valves 54 are used to control the flow of water in and out of the magnetic filter 26. For example, they can be used to stop the flow of water through the magnetic filter 26 so the magnetic filter 26 can be cleaned by opening the magnetic filter 26 and removing the magnetic particles retained inside.
The pump 22 and connector fitting 28 are positioned in a way such that the first inlet 32 and the first outlet 34 of the connector fitting 28, and the pump inlet 44 and pump outlet 46 are all in line with each other so that they can be easily attached to the system circuit or the system circuit pipe 24 without needing to change the position of the pipework.
A dosing port 55 is provided at the top of the magnetic filter 26. The dosing port 55 can be conveniently used to dose the central heating system with a chemical, for example a corrosion inhibitor.
Referring to Figure 3, a top view of a heating and/or cooling system 10 that has been retrofitted is shown. The pump 22, connector fitting (mostly obscured in Figure 3) and the system circuit pipe 24 are all in line with each other. The magnetic filter 26 is substantially cylindrical and it is positioned in a way such that its length (i.e., longitudinal axis of the cylinder) runs substantially parallel to the system circuit pipe 24. The filter inlet 50 and the filter outlet 52 are in line with each other allowing them to connect to the filter ends of the arms 40b, 42b of pipes 40, 42 which are also in line with each other.
The parallel arms 40a, 42a of the pipe 40 and further pipe 42 with the filter connection ends both extend away from the filter in a direction perpendicular to the length of the cylindrical body of the magnetic filter 26.
The valves 54 provided on each of the filter inlet 50 and filter outlet 52 of the magnetic filter 26 are in line with each other and are each disposed on either side of the magnetic filter 26, the sides of the magnetic filter 26 being in the direction parallel to the cylindrical body of the magnetic filter 26.
Lastly referring to Figure 4, a cross-section of the connector fitting 28 and pipes 40, 42 connecting the magnetic filter 26 to the connector fitting 28 is shown. The connector body 30 of the connector fitting 28 has a barrier 56 that separates a first flow passage connecting the first inlet 32 to the second outlet 36 of the connector fitting 28, and a second flow passage connecting the second inlet 38 to the first outlet 34 of the connector fitting 28. The barrier 56 is a thin material of the connector body 30 that starts from one side of the first inlet 32 and ends on the opposite side of the first outlet 34 creating a diagonal barrier in the centre of the connector body 30. The barrier prevents the flow of water between the first and second flow passages within the connector body 30.
The two ends of the connector body 30 in which the second inlet 38 and the second outlet 36 are each disposed, have a staggered increase in their inner and outer diameter compared to the outer and inner diameter of the intermediate part of the connector body 28 between the second inlet 38 and the second outlet 36. This allows the pipe 40 to be inserted into the second outlet 36 and the further pipe 42 to be inserted into the second inlet 38. This allows the pipes 40, 42 to be securely attached within the push fit fittings for example, a 22 mm push fit fitting.
The use of staggered increase in the diameter at the ends of the connector body 30 where the second outlet 36 and the second outlet 36 are disposed rather than using a constant diameter throughout the length in between the second inlet 38 and the second outlet 36 allows the connector fitting 28 to not get in the way of the union nut 48 provided on the first outlet 34 for connecting to the pump inlet 44, while still allowing the pipes 40, 42 to be inserted within the second inlet 38 and the second outlet 36.
The embodiments described above are provided by way of example only, and various changes and modifications will be apparent to persons skilled in the art without departing from the scope of the present invention as defined by the appended claims.

Claims

1 . A connector fitting for connecting a magnetic filter to a heating and/or cooling system, the connector fitting comprising: a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body for connecting to a system pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; and a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet; and the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other, and in which the second inlet and second outlet are in line with each other and perpendicular to the first inlet and first outlet.
2. A connector fitting as claimed in claim 1 , in which the distance between the first inlet and the first outlet is less than 70 mm.
3. A connector fitting as claimed in claim 1 or claim 2, in which a length of the connector fitting between the first inlet and the first outlet is shorter than a length of the connector fitting between the second inlet and the second outlet.
4. A connector fitting as claimed in any of the preceding claims, in which the first outlet is a flange provided with a union nut with a %” BSPP (26.4 mm major diameter / 24.1 minor diameter) thread for connecting to the pump. A connector fitting as claimed in any of the preceding claims, in which the second inlet and the second outlet are disposed between the first inlet and the first outlet. A connector fitting as claimed in any of the preceding claims, in which the second inlet and the second outlet include push fit pipe fittings. An arrangement comprising: a connector fitting for connecting a magnetic filter to a heating and/or cooling system, the connector fitting comprising: a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body for connecting to a system pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet; and the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other; a pipe connecting to the second inlet of the connector fitting for connecting to the magnetic filter; and a further pipe connecting to the second outlet of the connector fitting for connecting from the magnetic filter, the pipe and the further pipe having filter connection ends which face each other, for connection to a magnetic filter having an inlet and outlet. An arrangement as claimed in claim 7, in which the pipe and the further pipe are identical pipes, each pipe being substantially U-shaped having two parallel arms and a link between the two parallel arms, in which connector fitting ends of the two pipes face each other to connect to the second inlet and second outlet of the connector fitting, and filter connection ends of the pipes likewise face each other to connect to a magnetic filter, the magnetic filter having in-line inlet and outlet. An arrangement comprising: a connector fitting for connecting a magnetic filter to a heating and/or cooling system, the connector fitting comprising: a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body for connecting to a system pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet; and the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other; a magnetic filter having an inlet and an outlet for allowing flow of water through the magnetic filter for filtering out magnetic particles from the water in a closed circuit; a pipe connecting the second outlet of the connector fitting to the inlet of magnetic filter; and a further pipe connecting the outlet of the magnetic filter to the second inlet of the connector fitting.
10. An arrangement as claimed in claim 9, in which the magnetic filter is substantially cylindrical with its length running substantially parallel to a system circuit pipe.
11. An arrangement as claimed in claim 9 or claim 10, in which the flow of water through the magnetic filter is coming in from the system circuit pipe and out to a pump.
12. An arrangement as claimed in claim 9 or claim 10, in which the pipe and further pipe are identical pipes, each pipe being substantially U-shaped having two parallel arms and a link between the two parallel arms, in which connector fitting ends of the two pipes face each other to connect to the second inlet and second outlet of the connector fitting, and filter connection ends of the pipes likewise face each other to connect to the magnetic filter, the magnetic filter having in-line inlet and outlet.
13. An arrangement comprising: a pump having an inlet and an outlet and having a length between the inlet and the outlet; a connector fitting for connecting a magnetic filter to a heating and/or cooling system, the connector fitting comprising: a connector body; a first inlet into the connector body for connecting to a system circuit; a first outlet from the connector body for connecting to the pump; a second outlet from the connector body fluidly connected to the first inlet for allowing flow of water from the first inlet, through to the second outlet, and to the filter; a second inlet into the connector body fluidly connected to the first outlet for allowing flow of water from the filter, through the second inlet and out of the first outlet; and the connector body having a first flow passage connecting the first inlet to the second outlet, and a second flow passage connecting the second inlet to the first outlet, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first inlet and first outlet are in line with each other; a magnetic filter having an inlet and an outlet for allowing flow of water through the magnetic filter for filtering out magnetic particles from the water in a closed circuit; a pipe connecting the second outlet of the connector fitting to the inlet of magnetic filter; and a further pipe connecting the outlet of the magnetic filter to the second inlet of the connector fitting.
14. An arrangement as claimed in claim 13 in which the length between the inlet and outlet of the pump is 130 mm.
15. An arrangement as claimed in claim 13 or claim 14, in which the magnetic filter is substantially cylindrical with its length running substantially parallel to a system circuit pipe.
16. An arrangement as claimed in any of claims 13 to 15 in which the flow of water through the magnetic filter is coming in from the system circuit pipe and out to the pump.
17. An arrangement as claimed in any of claims 13 to 16, in which the pipe and further pipe are identical pipes, each pipe being substantially U-shaped having two parallel arms and a link between the two parallel arms, in which connector fitting ends of the two pipes face each other to connect to the second inlet and second outlet of the connector fitting, and filter connection ends of the pipes likewise face each other to connect to the magnetic filter, the magnetic filter having in-line inlet and outlet. A method of retrofitting a magnetic filter into a heating and/or cooling system, the system having a system circuit and an old pump in the system circuit, and the pump having a pump inlet and a pump outlet, the pump inlet and the pump outlet being in-line with each other, and the pump having a first length between the pump inlet and the pump outlet, the method comprising the steps of: removing the old pump from the system, to leave a first open pipe end and a second open pipe end, and a break in the system circuit between the first open pipe and the second open pipe end; providing a new pump, the new pump having a new pump inlet and a new pump outlet in-line with each other and the new pump having a second length between the new pump inlet and the new pump outlet, the second length being shorter than the first length; connecting the new pump to the first open pipe end; installing a connector fitting between the second open pipe end and the new pump, the connector fitting comprising: a connector body; a first port on the connector body for connecting to the system circuit; a second port on the connector body for connecting to the new pump; a third port on the connector body fluidly connected to the first port; a fourth port on the connector body fluidly connected to the second port; and the connector body having a first flow passage connecting the first port to the third port, and a second flow passage connecting the fourth port to the second port, the first and second flow passages being separated by a barrier to prevent flow between the first and second flow passages within the connector body, in which the first port and second port are in line with each other; and installing a magnetic filter for filtering out magnetic particles from water in a closed circuit, the magnetic filter having a first filter port and a second filter port for allowing flow of water into and out of the filter, and in which the fourth port of the connector fitting is connected with the first port of the magnetic filter, and the third port of the connector fitting is connected with the second port of the magnetic filter.
19. A method for retrofitting a magnetic filter into a heating and/or cooling system as claimed in claim 18, in which the second length of the new pump is 130 mm.
20. A method for retrofitting a magnetic filter into a heating and/or cooling system as claimed in claim 18 or claim 19, in which the distance between the first port and the second port of the connector fitting is less than 70 mm.
21. A method for retrofitting a magnetic filter into a heating and/or cooling system as claimed in any of claims 18 to 20, in which a length of the connector fitting between the first port and the second port is shorter than a length of the connector fitting between the third port and the fourth port.
22. A method for retrofitting a magnetic filter into a heating and/or cooling system as claimed in any of claims 18 to 21 , in which the second port is a flange provided with a union nut with a %” BSPP (26.4 mm major diameter/ 24.1 minor diameter) thread for connecting to the new pump.
23. A method for retrofitting a magnetic filter into a heating and/or cooling system as claimed in any of claims 18 to 22, in which the third port and the fourth port are disposed between the first port and the second port.
24. A method for retrofitting a magnetic filter into a heating and/or cooling system as claimed in any of claims 18 to 23, in which the third port and the fourth port include push fit pipe fittings.
25. A method for retrofitting a magnetic filter into a heating and/or cooling system as claimed in claim 18 to 24, in which the magnetic filter is substantially cylindrical with its length running substantially parallel to the system circuit pipe
26. A method for retrofitting a magnetic filter into a heating and/or cooling system as claimed in claim 18 to 25, in which the flow of water through the magnetic filter is coming out from the system circuit pipe and out to the pump.
27. A method for retrofitting a magnetic filter into a heating and/or cooling system as claimed in claim 18 to 26, in which the pipe and the further pipe are identical pipes, each pipe being substantially U-shaped having two parallel arms and a link between the two parallel arms, in which the connector fitting ends of the two pipes face each other to connect to the second inlet and second outlet of the connector fitting, and filter connection ends of the pipes likewise face each other to connect to the magnetic filter, the magnetic filter having in-line ports.
PCT/GB2023/051856 2022-07-15 2023-07-14 Connector fitting WO2024013516A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2210401.2A GB2620911A (en) 2022-07-15 2022-07-15 Connector fitting
GB2210401.2 2022-07-15

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH538076A (en) * 1972-05-05 1973-06-15 Lins Albert Control device for a central heating system
DE4113805C1 (en) * 1991-04-24 1992-05-21 Thermo-Data Vertriebsges. Fuer Mess- Und Regeleinrichtungen Mbh, 1000 Berlin, De Subsequent fitting system for installed pipeline - has crosspiece with deflector baffle and interconnecting line for two crosspiece branches
WO2017216669A1 (en) * 2016-06-14 2017-12-21 Giacomini S.P.A. Filter assembly for heating plants and the like
DE102018006784A1 (en) * 2018-08-28 2020-03-05 EnTEC P & L GmbH Pump group for a heating system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2565321B (en) * 2017-08-10 2021-06-02 Adey Holdings 2008 Ltd Magnetic filter for a central heating system
CN207262509U (en) * 2017-10-10 2018-04-20 浙江永德信铜业有限公司 A kind of PP R floor heatings water admixing center system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH538076A (en) * 1972-05-05 1973-06-15 Lins Albert Control device for a central heating system
DE4113805C1 (en) * 1991-04-24 1992-05-21 Thermo-Data Vertriebsges. Fuer Mess- Und Regeleinrichtungen Mbh, 1000 Berlin, De Subsequent fitting system for installed pipeline - has crosspiece with deflector baffle and interconnecting line for two crosspiece branches
WO2017216669A1 (en) * 2016-06-14 2017-12-21 Giacomini S.P.A. Filter assembly for heating plants and the like
DE102018006784A1 (en) * 2018-08-28 2020-03-05 EnTEC P & L GmbH Pump group for a heating system

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