专利汇可以提供APPARATUS FOR CLEANING A HEAT EXCHANGER专利检索,专利查询,专利分析的服务。并且An apparatus for cleaning interior deposits and debris from a potable water heat exchanger, the apparatus having a first connector and a second connector. The first connector is mated with an outlet of a pump capable of pumping compressed fluid into the potable water heat exchanger without contaminating the compressed fluid and potable water. The second connector is mated with a fitting of the potable water heat exchanger. At least one connector having an associated valve.,下面是APPARATUS FOR CLEANING A HEAT EXCHANGER专利的具体信息内容。
The present invention relates to an apparatus for cleaning deposits and debris from plumbing installations and in particular to an apparatus for cleaning deposits and debris from the potable water heat exchanger of a modern combination boiler.
Combination boilers are boilers which incorporate all the components of a conventional system i.e. a pump, a diverter valve, its own heat exchanger for hot water. Combination boilers are sealed systems in that they have an expansion vessel built in to the boiler. This vessel, usually coloured red and round like in shape, is used for the expansion of water when the boiler heats the water. The vessel accommodates the extra volume the water has increased by.
Combination boilers supply both heating and hot water. There is no need for a storage tank or stored hot water cylinder as the boiler creates instantaneous hot water at near mains pressure. Once a draw off for hot water is opened the boiler senses a signal from a flow switch which activates the burner. The heated non potable water created circulates through a secondary heat exchanger or direct hot water heat exchanger. This heated non potable water indirectly heats the cold potable water coming into the boiler. Once the cold potable water leaves the heat exchanger it is hot and is distributed via a hot water pipe which exits the boiler.
Most plumbing installations gather build-ups of various kinds on the inner walls of their components and piping over time. Such build-ups can include dirt, debris, scale, calcification, and other mineral build-ups or foreign body impediments to the flow of water in the system. These build-ups effectively reduce the interior diameter of the components and pipes in question reducing the efficiency of the plumbed device or system as a whole. In addition, the deposits can break free and flow with the water, through the plumbing installation, turning up in outlets such as those which provide drinking or washing water where such contaminants are highly undesirable.
It is also becoming increasingly important to increase the efficiency of plumbing installations such as boilers from a fuel consumption point of view. Cleaning of such components internally is possible with current commercially available solutions. Most of these solutions involve infusing the pipework of the boiler with chemical additives to breakdown the internal build-ups and return the boiler and supporting pipework to a more efficient condition. While this solution is effective, it cannot be used on a plumbing installation, or part thereof, where a portion of the pipework is used to carry fresh potable water for consumption, washing, or other activity having direct human contact as the chemical additives could be harmful in such a water supply.
It may be assumed that forcing compressed fluid without the chemical additives would solve the aforementioned problem. However forcing fluid through the system using conventional compressors adds oil and other such substances into the plumbing installation which can infiltrate fresh water sections of the installation.
It is an object of the present invention to obviate or mitigate the problem of clearing at least a portion of the interior build-up of deposits/debris within a potable water heat exchanger of a combination boiler without adding chemicals or other unwanted additives into the system.
Accordingly, the present invention provides an apparatus for cleaning interior deposits and debris from a potable water heat exchanger, the apparatus comprising;
a first connector and a second connector;
the first connector being mateable with an outlet of a pump capable of pumping compressed fluid into the potable water heat exchanger without contaminating the compressed fluid and potable water;
the second connector being mateable with a fitting of the potable water heat exchanger;
at least one connector having valve means.
Advantageously, the potable water heat exchanger is flushed with compressed fluid, clearing at least a portion of any build-ups in the potable water heat exchanger without contaminating the potable water heat exchanger with oil, other fluids, particulates, or any other foreign substances which would be considered highly undesirable in a fresh water supply.
The air or gas is pumped into a first connector via a pump and passes through a conduit and on to a potable water heat exchanger. In this way, a volume of pressurized air or gas is pulsed through the water inside the potable water heat exchanger and some of the pressure is released by opening a faucet/tap or other suitable plumbing fitting. The sudden pulsing of the air or gas which has been pumped through the water in the potable water heat exchanger causes any water which is located inside the potable water heat exchanger to surge through the potable water heat exchanger. Some of the water and fluid will exit from the open faucet/tap or other fitting. This turbulent flow effect around and through the components of the potable water heat exchanger dislodges any discrepancies which have deposited on the internal surface of the potable water heat exchanger and these are flushed out of the system through the natural course of events.
Ideally, the potable water heat exchanger is a secondary heat exchanger of a combination boiler.
Preferably, the first and second connectors have a length of conduit therebetween.
Ideally, the second connector comprising a valve.
Preferably, the valve of the second connector is openable when the second connector is connected to the fitting of the potable water heat exchanger, and is closable when the connector is disconnected from the fitting of the potable water heat exchanger.
Ideally, the first connector comprising a first valve which allows air or gas to flow in a direction from the first end of the conduit to the second end of the conduit.
Preferably, the first connector is mateable with an outlet connector of an electrically driven pump.
Ideally, the first connector is mateable with an outlet connector of a battery driven pump.
Ideally, the pump power supply is 12V DC or a 240 V AC power supply.
Preferably, the pump is a pump of the type that does not require lubrication by oil. Advantageously, this prevents oil contaminating the compressed fluid and therefore the fresh water supply of the potable water heat exchanger.
Preferably, the second valve stops the flow of air or gas from the second connector when closed.
Preferably, the second connector is mateable with a corresponding connector of the potable water heat exchanger.
Ideally, the second connector is a female connector, mateable with a male connector of the potable water heat exchanger.
Preferably, the potable water heat exchanger connector is a tap or faucet in fluid connection with the potable water heat exchanger.
Preferably, the second connector is mateable with a threaded plumbing fitting having a diameter equal to one of: ½ inch, ¾ inch, 1 inch or any fitting up to 12 inches and beyond.
In one embodiment, the second connector is mateable with a fitting of the potable water heat exchanger via an adapter. Preferably, the adapter is mateable with a threaded plumbing fitting having a diameter equal to one of: ½ inch, ¾ inch, 1 inch or any fitting up to 12 inches and beyond.
Alternatively, the adapter is mateable with a faucet/tap of the plumbing fitting. The adapter may further comprise a valve which permits the flow of air or gas from the conduit to the potable water heat exchanger but which blocks the flow of fluid or gas from the potable water heat exchanger to the conduit.
Preferably, the conduit is a tube.
Ideally, the tube is formed of a flexible or rigid material.
Preferably, the potable water heat exchanger is installed in one of: a residential property, a commercial property, a mobile or motorized home, a recreational vehicle (RV) or a boat.
Ideally, the length of conduit further comprises a reservoir, between its first and second ends, the reservoir being capable of storing a quantity of pressurised gas. Advantageously, the reservoir can store a quantity of air or gas sufficient to urge water through the potable water heat exchanger.
Preferably, the conduit further comprises a pressure sensor.
Ideally, the pressure sensor is a mechanical sensor, such as a manometer. Alternatively, the pressure sensor may be an electronic sensor.
Ideally, the fluid is water.
Ideally, the pump is locatable within a dwelling or structure served by the potable water heat exchanger.
Ideally, the pump is operable by a switch or other means of activation located within the dwelling or structure served by the potable water heat exchanger.
Preferably, the switch or other means of activation couples the pump to a power supply.
Alternatively, the pump comprises a charged canister containing pressurised gas, which can be discharged selectively by the operator.
Ideally, the charged canister is chargeable/re-chargeable electronically by compressor.
Alternatively, the charged canister can be chargeable/re-chargeable using a self inflating bladder contained within the charged canister.
Preferably, the pump is fitted with a pressure sensor to measure the generated pressure of the fluid the pump is transferring.
Ideally, the pump has limiter switch means to switch the pump off or on at a predetermined pressure level.
Preferably, the limiter switch has an upper limit of approximately 30 psi.
Advantageously, the pressure is not high enough to damage the potable water heat exchanger or components thereof but is high enough to move or dislodge deposits, debris, or other material within the potable water heat exchanger.
Preferably, the pressure sensor is a mechanical sensor, such as a manometer. Alternatively, the pressure sensor may be an electronic sensor.
Ideally, the fitting has a connector protruding from the potable water heat exchanger.
Preferably, the connector is a threaded plumbing fitting having a diameter equal to one of: ½ inch, ¾ inch, 1 inch or any fitting up to 12 inches and beyond.
Preferably, the valve in the fitting permits the flow of fluid from the pump to the potable water heat exchanger but blocks the flow of fluid from the potable water heat exchanger to the pump.
Ideally, the valve is a Schrader type valve. Alternatively, the valve is a motorized valve.
Preferably, a length of tubing connects the pump to the connector.
Preferably, the pump is permanently connectable to the potable water heat exchanger.
Preferably, in this integrated embodiment, a wiring loom is used to couple switch means to the pump. In this embodiment, the pump switch means can be located with various other switches on a centrally located electrical control panel.
Accordingly, the present invention provides a method of urging a turbulent fluid flow through a potable water heat exchanger, the method comprising pumping a volume of uncontaminated pressurized air or gas through water inside the potable water heat exchanger for creating a turbulent flow of water and gas through the potable water heat exchanger for removing contaminants from the inside surface of the potable water heat exchanger.
Ideally, the method comprising pumping using a mains electricity or battery operated pump.
Preferably, the method comprising opening a faucet/tap or other suitable plumbing fitting connected downstream of the potable water heat exchanger. The sudden pulsing of the air or gas which has been pumped through the water in the potable water heat exchanger causes any water which is located inside the potable water heat exchanger to surge through the potable water heat exchanger in a turbulent manner. Some of the water and fluid will exit from the open faucet/tap or other fitting. This turbulent flow effect around and through the components of the potable water heat exchanger dislodges any discrepancies which have deposited on the potable water heat exchanger and these are flushed out of the system through the natural course of events.
Embodiments of the present invention will now be described in detail with reference to the accompanying figures in which:
Referring to the drawings and initially to
The apparatus of
The first connector 151 comprises a flange 152 or gripping area such as ribs (not shown) accommodating a valve 155 of the type typically used on automobile tyres and commonly referred to as a Schrader valve. Valve 155 has a threaded outer diameter, for connection with an outlet of pump 130, and allows air or gas to flow in a direction from the first end 111 of the conduit to the second end 112 of the conduit 110.
The second connector 161 is mateable with an adapter 121 which is attached to a fitting 19 of the potable water heat exchanger 15.
The second connector 161 comprises an outer body 162 providing mechanical support for a second connector valve 165. Second connector valve 165 opens when the second connector 161 is connected to the adapter 121; similarly, second connector valve 165 closes when the second connector 161 is disconnected from the adapter 121.
In use, a mains water supply shut-off valve (not shown) for potable water heat exchanger 15 is closed, so that water can no longer enter the system from the external supply or well. A pump 130 is connected to first connector 151 so that air or gas can be pumped into the conduit 110 at its first end 111. The first connector valve 155 prevents the air or gas from escaping back through connector 151 if the pump 130 is disconnected.
When second connector 161 is connected to adapter 121, second connector valve 165 opens, so that air or gas which is pumped into first connector 151 via pump 130 passes through conduit 110 and on to potable water heat exchanger 15. In this way, a volume of pressurized air or gas is pulsed through the water in the potable water heat exchanger 15. This pressure may be released by opening a faucet/tap 16 or other suitable plumbing fitting to gain entry to the water system downstream of the apparatus 100. The sudden pulsing of the air or gas which has been pumped through the water in the potable water heat exchanger 15 causes any water which is located inside the potable water heat exchanger 15 to surge through the potable water heat exchanger 15. Some of the water will exit from the open faucet/tap 16 or other fitting. This turbulent flow effect of water and gas around and through the components of the potable water heat exchanger 15 dislodges any discrepancies which have deposited on the potable water heat exchanger 15 and these are flushed out of the system through the natural course of events. Significant testing has shown that significant discrepancies exist on the components of the potable water heat exchanger 15 and this pulsing effect cleans these discrepancies off the heat exchanger 15 to a significant degree.
If the plumbing installation comprises several branches (not shown) each having a corresponding faucet or tap, the trapped water containing contaminants can be purged from all of the branches by a sequential process as follows: pumping air or gas into the potable water heat exchanger 15; opening a faucet/tap or other fitting attached to one particular branch and allowing the water to be purged from the corresponding branch; closing off that tap; repeating the process of building air pressure for a different branch of the installation having a different faucet/tap or other fitting until all of the branches have been purged. A particular sequence of purging the respective branches of the plumbing installation may provide the most expeditious route to removing all of the water from the system. Alternatively, each branch may be flushed for a period of time once the mains water supply 18 is reconnected to the potable water heat exchanger 15.
The potable water heat exchanger adapter 121 is chosen for quick attachment of the apparatus 100 of the present invention so that water can be urged through the potable water heat exchanger 15. Adapter 121 comprises a threaded portion 122 for attachment to a threaded fitting 19 of the potable water heat exchanger 15. Such fittings may include (but are not limited to) threaded plumbing fittings having a diameter equal to one of: ½ inch, ¾ inch, 1 inch or any fitting up to 12 inches and beyond. Alternatively, adapter 121 may comprise a flange having a push fit for connection to fitting 19 of the potable water heat exchanger 15 or may comprise a portion facilitating twist lock connection with fitting 19 of the potable water heat exchanger 15. Further alternatively, the adapter is mateable with a faucet or tap of the fitting 19 of the potable water heat exchanger 15.
Second connector 161 comprises a stop valve 165 and has an outer body 162, which provides mechanical support for valve 165 and other parts of the inner mechanism of second connector 161. Second connector 161 is formed to have a substantially cylindrical or concave inner orifice 164 to accommodate a protruding portion 124 of the adapter 121 of the potable water heat exchanger 15. Second connector 161 further comprises releasable lugs 168 for engaging with one or more indentations around the circumference of adapter 121 of the fitting 19 of the potable water heat exchanger 15. Second connector 161 may optionally further comprise a washer formed of a flexible material such as rubber or soft plastic to provide an air tight and water tight fit between the second connector 161 of the apparatus and adapter 121.
Second connector 161 is directional, and has an input side 160A and an output side 160B. Stop valve 165 has a cover 166 which closes against a build up of pressure on its input side 160A. In this state, second connector 161 is closed against a flow of fluid or gas from its input side 160A to its output side 160B—see
Adapter 121 comprises a threaded portion 122 for mating with the fitting 19 of the potable water heat exchanger 15 and further comprises a protruding portion 124 for mating with second connector 161 of the apparatus of the present invention. When mated together, the protruding portion 124 of adapter 121 engages a portion of cover 166 of second connector 161 thereby causing second connector to switch to its open state—as shown in
In the embodiments of the present invention shown in
The apparatus of
The first connector 351 comprises a flange 352 or domed end (not shown) having a valve such as an automobile tyre valve 355 fitted. Valve 355 allows air or gas to flow in a direction from the first end 311 of the conduit 310 to the second end 312 of the conduit 310.
In use, an outlet of automobile tyre pump 130 or any compressor, most preferably a digital compressor with an auto shut off function, is connected to first connector 351 so that air or gas can be pumped into the conduit 310 at its first end 311. Air or gas pressure builds up inside conduit 310 and reservoir tank 315 over a period of time so that the trapped air or gas has a corresponding unpressurised volume which is greater than that of the combined inner volume of conduit 310 and reservoir tank 315. Ideally, the corresponding unpressurised volume of gas is several times that of the combined inner volume of conduit 310 and reservoir tank 315. Specifically, after pressurization, the corresponding unpressurised volume of gas may be up to twenty times that of the combined inner volume of conduit 310 and reservoir tank 315, corresponding to pressure of approximately twenty atmospheres. Manometer 316 provides a measure of the pressure of the air or gas inside reservoir tank 315 and conduit 310. Manometer 316 provides a safety means against the over inflation of reservoir tank 315.
Conduit 310 may further comprise a pressure release valve (not shown). For example, a pressure release valve may be included so that the pressure inside the reservoir tank 315 cannot exceed a particular level.
Second connector 361 is mateable with an adapter 121 of the fitting 19 of the potable water heat exchanger 15. Adapter 121 is connected to the fitting 19 of the potable water heat exchanger 15 via a threaded portion 122. The second connector 361 comprises a second connector valve 365 which has a closed state and an open state. Second connector valve 365 is initially closed allowing the air or gas pressure to build up inside conduit 310 and reservoir tank 315. Second connector valve 365 opens when the second connector is connected to the potable water heat exchanger adapter 121. Connection of second connector valve to potable water heat exchanger adapter 121 in this way, causes the trapped air or gas which is inside conduit 310 and reservoir tank 315 to be transferred to the potable water heat exchanger 15.
In this way, a volume of pressurized air or gas is pulsed through the water in the potable water heat exchanger 15. This pressure may be released by opening a faucet/tap 16 or other suitable plumbing fitting to gain entry to the water system downstream of the apparatus 100 of the present invention. The sudden pulsing of the air or gas which has been pumped through the water in the potable water heat exchanger 15 causes any water which is located inside the potable water heat exchanger 15 to surge through the potable water heat exchanger 15. Some of the water will exit from the open faucet/tap 16 or other fitting. This turbulent flow effect of water and gas around and through the components of the potable water heat exchanger 15 dislodges any discrepancies which have deposited on the potable water heat exchanger 15 and these are flushed out of the system through the natural course of events.
In use, the pump 130 of the embodiment of the present invention depicted in
The apparatus of
The first connector 151 comprises a flange 152 accommodating a valve 155 such as the type typically used on automobile tyres and commonly referred to as a Schrader valve. Valve 155 has a threaded outer diameter, for connection with an outlet of a pump 130, and allows air or gas to flow in a direction from the first end 111 of the conduit to the second end 112 of the conduit.
The second connector 161 is mateable with an adapter 121 which is attached to a faucet or tap 19 of the potable water heat exchanger 15. Ideally faucet or tap 19 is located on the potable water heat exchanger 15 at some point near or adjacent to the main shut-off valve.
The second connector 161 comprises an outer body 162 providing mechanical support for a second connector valve 165. Second connector valve 165 opens when the second connector 161 is connected to the plumbing faucet or tap 19 via adapter 121; similarly, second connector valve 165 closes when the second connector 161 is disconnected from the faucet or tap 19.
In use, a water supply shut-off valve (not shown) for potable water heat exchanger 15 is closed, so that water can no longer enter the system from the external supply or well. Faucet or tap 19 is then opened. A pump 130 is connected to first connector 151 so that air or gas can be pumped into the conduit 110 at its first end 111. The first connector valve 155 prevents the air or gas from escaping back through connector 151 if the pump 130 is disconnected.
When second connector 161 is connected to faucet or tap 19 via adapter 121, second connector valve 165 opens, so that air or gas which is pumped into first connector 151 via pump 130 passes through conduit 110 and on to potable water heat exchanger 15. In this way, a volume of pressurized air or gas pulses through the water in the potable water heat exchanger 15. The sudden pulsing of the air or gas which has been pumped into the potable water heat exchanger 15 causes any water which is located inside the potable water heat exchanger 15 to surge through the potable water heat exchanger 15. Some of the water will exit from the open faucet/tap 16 or other fitting. This turbulent flow effect of water and gas around and through the components of the potable water heat exchanger 15 dislodges any discrepancies which have deposited on the potable water heat exchanger 15 and these are flushed out of the system through the natural course of events.
Thus, the apparatus of the present invention as described herein provides a compact and portable apparatus capable of urging water through the potable water heat exchanger 15. The apparatus of the present invention can be deployed on a range of existing potable water heat exchanger without there being a need for modification to the installation.
The apparatus of the present invention 100 as depicted in the first embodiment of
The apparatus 500 has a pump 530 having a connector 522 mated with a portion of the fitting 19. The pump 530 is located within a dwelling or structure served by the potable water heat exchanger 15. The pump 530 is operable by a switch 540 or other member of activation located within the dwelling or structure served by the potable water heat exchanger 15. The switch 540 or other member of activation couples the pump to a power supply. The power supply is a 12V DC or a 240 V AC power supply. The pump 530 is fitted with a pressure sensor 570 to measure the generated pressure of the fluid the pump 530 is pumping. The pump 530 has a limiter switch to switch the pump 530 off or on at a predetermined pressure level.
The limiter switch has an upper limit of approximately 30 psi. Advantageously, this pressure suits fixed homes and caravans. Alternatively, the limiter switch has an upper pressure limit of approximately 15 psi. Advantageously, this pressure suits towing caravans, motor homes, and boats. The pressure sensor 570 is a mechanical sensor, such as a manometer. Alternatively, the pressure sensor 570 is an electronic sensor.
The fitting 19 has a connector 522 protruding from the potable water heat exchanger 15. The connector 522 is a threaded plumbing fitting and has a diameter equal to one of: ½ inch, ¾ inch, 1 inch or any fitting up to 12 inches and beyond. The valve in the fitting 19 permits the flow of fluid from the pump 530 to the potable water heat exchanger 15 but blocks the flow of fluid from the potable water heat exchanger 15 to the pump 530. The valve is a Schrader type valve. Alternatively, the valve is a motorized valve. In some embodiments, the potable water heat exchanger 15 is installed in one of: a mobile home, an occasional or full time residence, a motor home, a recreational vehicle (RV), a boat/barge.
A length of tubing 550 connects the pump 530 to the connector 522. In one embodiment, the pump 530 is permanently connected to the potable water heat exchanger 15. Alternatively, the tubing 550 and connector 522 are integrally formed with the potable water heat exchanger 15 and the pump 530 is the only equipment a service technician requires to flush the system. The connector 522 is permanently connectable to the fitting 19. Advantageously, the apparatus 500 can be built into the potable water heat exchanger 15 as an integrated component.
A wiring loom 580 is used to couple switch member 540 to the pump 530.
In this embodiment, the pump switch member 540 is located with various other switches on a centrally located electrical control panel.
In use, a water supply shut-off valve (not shown) for potable water heat exchanger 15 is closed, so that water can no longer enter the system from the external supply or well. Pump 530 is connected to the fitting 19 through connector 522, if the pump is not permanently coupled thereto, so that air or gas can be pumped into potable water heat exchanger 15. The valve in fitting 19 prevents the air, gas, or residual water from escaping back through connector 522 when the pump 530 is deactivated.
On activation of the pump 530, a volume of pressurized fluid such as air or gas pulses through the water in the potable water heat exchanger 15. The sudden pulsing of the air or gas which has been pumped into the potable water heat exchanger 15 causes any water which is located inside the potable water heat exchanger 15 to surge through the potable water heat exchanger 15. Some of the water will exit from the open faucet/tap 16 or other fitting. This turbulent flow effect of water and gas around and through the components of the potable water heat exchanger 15 dislodges any discrepancies which have deposited on the potable water heat exchanger 15 and these are flushed out of the system through the natural course of events.
In the embodiment of the present invention shown in
Thus, the present invention as described herein provides a compact and possibly integrated apparatus capable of removing contaminants from potable water heat exchangers 15.
In relation to the detailed description of the different embodiments of the invention, it will be understood that one or more technical features of one embodiment can be used in combination with one or more technical features of any other embodiment where the transferred use of the one or more technical features would be immediately apparent to a person of ordinary skill in the art to carry out a similar function in a similar way on the other embodiment.
In the preceding discussion of the invention, unless stated to the contrary, the disclosure of alternative values for the upper or lower limit of the permitted range of a parameter, coupled with an indication that one of the said values is more highly preferred than the other, is to be construed as an implied statement that each intermediate value of said parameter, lying between the more preferred and the less preferred of said alternatives, is itself preferred to said less preferred value and also to each value lying between said less preferred value and said intermediate value.
The features disclosed in the foregoing description or the following drawings, expressed in their specific forms or in terms of a means for performing a disclosed function, or a method or a process of attaining the disclosed result, as appropriate, may separately, or in any combination of such features be utilised for realising the invention in diverse forms thereof as defined in the appended claims.
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