EP4182608A1 - Replenishing system and method of replenishing a liquid into a pressurized liquid circulating system - Google Patents
Replenishing system and method of replenishing a liquid into a pressurized liquid circulating systemInfo
- Publication number
- EP4182608A1 EP4182608A1 EP21755594.5A EP21755594A EP4182608A1 EP 4182608 A1 EP4182608 A1 EP 4182608A1 EP 21755594 A EP21755594 A EP 21755594A EP 4182608 A1 EP4182608 A1 EP 4182608A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid
- replenishing
- collector
- pressurized liquid
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 276
- 238000000034 method Methods 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 52
- 239000003570 air Substances 0.000 claims description 29
- 238000005276 aerator Methods 0.000 claims description 11
- 239000012080 ambient air Substances 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 5
- 238000000605 extraction Methods 0.000 description 3
- 230000000284 resting effect Effects 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000012206 bottled water Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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
- F24D3/1083—Filling valves or arrangements for filling
-
- 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
- F24D19/08—Arrangements for drainage, venting or aerating
- F24D19/082—Arrangements for drainage, venting or aerating for water heating systems
- F24D19/083—Venting arrangements
Definitions
- the present invention relates to a replenishing system and to a method of replenishing a liquid into a pressurized liquid circulating system.
- Pressurized liquid circulating systems are normally designed to operate at a specific operating pressure. Replenishing may be required on a regular basis in order to maintain the operating pressure within a predetermined range, and compensate for any pressure losses that may occur over time.
- Replenishing may be required on a regular basis in order to maintain the operating pressure within a predetermined range, and compensate for any pressure losses that may occur over time.
- For replenishing the pressurized liquid circulating system it may be temporarily connected to a pressurized liquid supply. Liquid may then flow from the pressurized liquid supply into the pressurized liquid circulating system to raise a pressure of the liquid contained therein.
- a pressurized liquid circulating system is not limited to systems using water as a liquid, the present invention is especially suitable for - and described in relation to - heating and cooling systems using water as a heat-transfer medium, also called hydronic systems.
- the water of a hydronic system may be liquid water, gaseous water (steam) or a water solution (usually glycol with water).
- hydronic systems are designed to operate at a specific operating pressure, which especially applies to hydronic systems that use liquid water or a water solution as a heat transfer medium. Consequently, replenishing may be required on a regular basis in order to maintain the desired operating pressure, and compensate for any pressure losses that may occur over time, e.g. due to small leaks or evaporation.
- a disadvantage of many prior art replenishing systems is the undesirable introduction of gas into the pressurized liquid circulating system when replenishing the system with liquid.
- This introduction of gas may be caused by a column of gas being pushed into the pressurized liquid circulating system, or alternatively by the introduction of gas-rich fluid, typically gas-rich water, especially if a turbulent flow prevents degassing prior to the introduction into the system.
- Introduction of a column of gas may be clarified based on the steps performed when replenishing a central heating system.
- a hose is temporarily arranged between the water mains system, that defines the pressurized liquid supply, and the central heating system, that defines the pressurized liquid circulating system.
- this hose is empty, and consequently it will contain ambient air.
- a valve of the water mains system may be opened, now partially filling the hose with water due to the water pressure in the water mains system, and also compressing the air trapped inside said hose.
- the pressure in the water mains system will force water to flow from the water mains system into the central heating system.
- the air that was trapped in the hose when it was connected between the water mains system and the central heating system is now also forced into the central heating system along with the replenishing water.
- GB 2 376290 A which is directed to a filling means for a pressurized fluid system such as a central heating system, is considered the closest prior art.
- An intermediate section may be interpreted as a collector that is arranged between the input and the replenishing output.
- An air vent permits the expulsion of air from the intermediate section whilst preventing the passage of fluid. Consequently, this air vent that is arranged on an upper side of said intermediate section may be considered a gas extractor of the collector.
- An objective of the present invention is to provide a replenishing system and replenishment method, that is improved relative to the prior art and wherein at least one of the above stated problems is obviated or alleviated.
- replenishing system comprising:
- a collector that is arranged between the input and the replenishing output and that comprises a gas extractor.
- gas present in the liquid contained in the replenishing system in particular in the collector thereof, may be extracted out of the liquid before said liquid is successively introduced into the pressurized liquid circulating system.
- the replenishing system according to the invention thereby allows a replenishing of a pressurized liquid circulating system with a significantly reduced introduction of gas.
- gas present to provide an initial air gap may be effectively extracted.
- the liquid itself may also contain gas, e.g. in the case of water, and consequently liquid flowing from the pressurized liquid supply into the pressurized liquid circulating system may still introduce some gas into the pressurized liquid circulating system.
- the collector is an upward extending conduit or vessel
- the gas extractor comprises a gas accumulator that is arranged at an upper end of the collector.
- upward extending may be slanted and comprising at least an upward component
- - even more preferably - the upward extending conduit is an upright extending conduit or vessel, wherein upright is interpreted as substantially vertical.
- An upward, or even more preferably an upright, extending collector facilitates the natural of process of gas rising inside the liquid, and thereby promotes the extraction of gas out of said liquid.
- the gas accumulator of the gas extractor that is arranged at the upper end of the collector may extract the gas that will have a tendency to rise in the liquid.
- gas present in the liquid may accumulate in the gas accumulator above a liquid level inside the collector.
- a gas accumulator may provide an air gap in a very fast and reliable manner. After all, the gas that is accumulated in the gas accumulator may easily flow downward and back into the collector when liquid flows out of said collector (e.g. towards a drain) and thereby creates an underpressure in said collector.
- the gas in the accumulator will normally even have an overpressure that forces the draining of liquid via a drainage output, speeding up the draining and the creation of the air gap.
- a gas accumulator is faster and more reliable than only relying on an aerator, that will only open if the underpressure has passed a certain threshold level, and than still often only allows a limited flow rate, causing the air gap to build relatively slowly, and considerable slower than the speed of air gap creation obtainable with a gas accumulator.
- a gas accumulator is very reliable, since it requires no moving parts, contrary to an aerator.
- the gas accumulator prevents any air in the air gap to become trapped and flushed into the pressurized fluid system.
- the replenishing system may further comprise a drainage output that is configured to be arranged in liquid connection with a drain and a drain valve configured to selectively open or close off said drainage output.
- a drainage output that is configured to be arranged in liquid connection with a drain and a drain valve configured to selectively open or close off said drainage output.
- the replenishing system further comprises a safety conduit that is extending in a sloping direction away from the collector.
- This safety conduit is arranged between the collector and the replenishing output.
- a sloping direction of said safety conduit is guarantees that a liquid connection between the liquid in the pressurized liquid circulating system and the liquid in the pressurized liquid supply, e.g. a mains water supply, is physically broken. In this way a liquid connection is prevented, even in the unlikely situation of a failure of a valve.
- the safety conduit is extending in a downward sloping direction away from the collector. In this way, any gas present in liquid in the safety conduit will be able to rise inside said safety conduit towards the collector and flow back into the collector. When the collector is drained and the liquid level in the collector drops to a level below a connection of the safety conduit to the collector, any liquid that may be still present in the collector will be physically disconnected from any water in the safety conduit.
- the safety conduit is extending in an upward sloping direction away from the collector. This arrangement will cause liquid to automatically drain from said safety conduit if a drain valve, which is normally open, is in an open state. It is even conceivable that the safety conduit is tapered to provide a downward slope away from the collector to effectively allow any gas present in the liquid in the safety conduit to rise and flow back into the collector, while also providing an upward slope away from the collector for draining any liquid from said safety conduit if a drain valve is opened.
- the safety conduit will be tapered in a direction away from the collector, and thus exhibit a larger cross section near the collector than at a remote end from the collector.
- the replenishing system further comprises a water hammer arrestor, and optionally a shock absorber, e.g. for noise reduction that comprises:
- a housing supporting one or more than one non-return valve configured to prevent a backflow from the pressurized liquid circulating system through the water hammer arrestor towards the pressurized liquid supply;
- said housing is configured to move upstream over a limited range when the one or more than one non-return valve is exposed to the backflow;
- a spring is configured to restrict and absorb the movement of the housing.
- the spring is preferably configured to restrict and absorb the movement of the housing until the differential pressure on both sides of the non-return valve is negligible.
- the housing may be arranged in a conduit, and may move a limited range relative to said conduit to absorb the water hammer. In this way, a backflow preventer is integrated with a water hammer arrestor, providing a compact and effective solution.
- one non-return valve is enough under normal circumstances, preferably at least two non-return valves are arranged inside the housing to provide additional safety in case one non-return valve would leak.
- a body of said single non-return valve may define the housing supporting the non-return valve, allowing the non-return valve to be directly arranged inside a conduit of the replenishing system with the spring restricting the movement of the body of the non-return valve relative to said conduit. If multiple non-return valves are applied, they are preferably arranged inside a housing that accommodates a plurality of non-return valves, wherein the spring is configured to restrict and absorb the movement of their common housing.
- the pressurized liquid supply may be a water mains system, and the pressurized liquid circulating system may be a hydronic system.
- the replenishing system may be an assembly of different parts, a very user-friendly embodiment is obtained if features of the replenishing system as described in this application are comprised in a housing of a replenishment device, wherein the input is configured to be arranged in liquid connection with the pressurized liquid supply, and wherein the replenishing output is configured to be arranged in liquid connection with the pressurized liquid circulating system.
- the objective is also achieved with the method of replenishing a liquid into a pressurized liquid circulating system according to the present invention, comprising the steps of:
- the collector is an upward extending conduit or vessel
- the step of extracting gas out of said liquid comprises the step of accumulating said extracted gas in a gas accumulator that is arranged at an upper end of the collector
- the step of draining liquid via the drainage output of the replenishing system comprises the step of forcing the draining of said liquid by an overpressure of the gas in the gas accumulator.
- the step of extracting gas out of said liquid comprises the step of allowing gas to rise in a safety conduit that is extending in a downward sloping direction away from the collector and allowing said gas to flow from the safety conduit back into the collector.
- gas in particular air, becomes trapped in the safety conduit, and may be pushed into the pressurized liquid circulating system during replenishing thereof.
- the step of extracting gas out of said liquid comprises extracting substantially all gas originating from an initial air gap between the liquid of the pressurized liquid supply and the liquid of the pressurized liquid circulating system out of said liquid to provide a liquid connection between the liquid of the pressurized liquid supply and the liquid of the pressurized liquid circulating system.
- the initial air gap is an air gap present between the liquid of the pressurized liquid circulating system and the liquid of the pressurized liquid supply prior to the replenishing action, as also required by (European) regulations.
- the invention proposes to extract the gas present in said initial air gap to thereby significantly reduce the amount of gas introduced into the pressurized liquid circulating system during a replenishing thereof.
- the replenishing system according to the invention may be installed one time, after which it may be maintained in a connected state. However, at least for the first time use, the method of replenishing may be preceded by the steps of:
- it further comprises the step of stopping liquid to flow from the pressurized liquid supply through the replenishing system and into the pressurized liquid circulating system after a pre-determined operating pressure in the pressurized liquid circulating system is set. Replenishing is stopped when the desired operating pressure is reached, and may be repeated over time if the pressure drops to below a pre-determined threshold.
- the liquid itself may also contain gas, e.g. in the case of water, and consequently liquid flowing from the pressurized liquid supply into the pressurized liquid circulating system may still introduce some gas into the pressurized liquid circulating system.
- the method therefore may comprise, according to an even further preferred embodiment, replenishing of the pressurized liquid circulating system in at least two stages by alternating the steps of:
- it further comprises the step of draining liquid via a drainage output of the replenishing system, thereby at least partially emptying the upward extending conduit of the collector.
- the method further comprises the step of lowering a liquid level in said upward extending conduit till below a connection to a safety conduit that is extending away from the upward extending conduit in a sloping direction. If the liquid level in the collector drops to a level below the connection of the safety conduit to the collector, any liquid that may be still present in the collector will be physically disconnected from any water in the safety conduit. In this way, safety is guaranteed, even in the unlikely situation of a valve failure.
- the safety conduit is extending in a downward sloping direction away from the collector and allowing said gas to flow from the safety conduit back into the collector.
- the method further comprises the step of aerating the replenishing system to promote draining of liquid out of the collector.
- the step of extracting gas out of said liquid comprises the step of accumulating said extracted gas in a gas accumulator, and the step of draining liquid via a drainage output of the replenishing system comprises the step of forcing the draining of said liquid by an overpressure of the gas in the gas accumulator.
- the collector is an upward or upright extending conduit or vessel, it will already drain due to gravity.
- an aerator may allow air into the system to prevent any underpressure (or vacuum) to prevent this draining.
- an even more preferred embodiment is obtained if the extracted gas is accumulated in the collector, in particular in the gas accumulator, under pressure. This pressure may promote draining by forcing the liquid out of the collector once a drainage valve is opened.
- the method comprises the step of using a replenishing system according to the present invention.
- the replenishing system may further comprises a controller, and the invention may further relate to a non-transitory computer-readable medium comprising computer readable instructions that, when executed, cause a controller to perform the method of the method according to the invention.
- a controller may further relate to a non-transitory computer-readable medium comprising computer readable instructions that, when executed, cause a controller to perform the method of the method according to the invention.
- Figure 1 is a schematic view of a replenishing system according to a first preferred embodiment connecting a pressurized liquid supply to a pressurized liquid circulating system;
- Figures 2A-2D show successive steps of replenishing the pressurized liquid circulating system following the initial resting state shown in Figure 1 ;
- Figure 3 is a schematic view of a replenishing system according to a second preferred embodiment connecting a pressurized liquid supply to a pressurized liquid circulating system;
- Figures 4A-4D show successive steps of replenishing the pressurized liquid circulating system following the initial resting state shown in Figure 3;
- Figure 5 is a schematic view of a replenishing system according to a third preferred embodiment connecting a pressurized liquid supply to a pressurized liquid circulating system;
- Figures 6A-6D show successive steps of replenishing the pressurized liquid circulating system following the initial resting state shown in Figure 5;
- FIGS. 7 A and 7B show two detailed schematic views of a water hammer arrestor according to the invention.
- FIGS 8 and 9 show alternative arrangements of the safety conduit.
- a replenishing system 1 that comprises an input 2 that is configured to be arranged in liquid connection with a pressurized liquid supply 3, and a replenishing output 4 that is configured to be arranged in liquid connection with a pressurized liquid circulating system 5.
- the replenishing system 1 further comprises a collector 6 that is arranged between the input 2 and the replenishing output 4, wherein the collector 6 comprises a gas extractor 7.
- the collector 6 is preferably an upward extending, and more preferably an upright extending, conduit or vessel, as shown in the Figures.
- the pressurized liquid supply 3 may be a water mains system
- the pressurized liquid circulating system 5 may be a hydronic system.
- the gas extractor 7 may be arranged at an upper end 8 of the collector 6, in this way making optimal use of the natural tendency of a gas to rise in a liquid.
- the replenishing system 1 may comprises an aerator 9 configured to allow ambient air to enter the collector 6 and thereby prevent an underpressure to occur during draining of the collector 6.
- Such an aerator 9 is shown in the first and the second preferred embodiments, shown in Figures 1, 2A-2D and in Figures 3, 4A-4D, respectively.
- the gas extractor 7 may comprise a gas accumulator 10, as shown in the second and third preferred embodiments, shown in Figures 3, 4A-4D and in Figures 5, 6A-6D, respectively.
- the replenishing system 1 may further comprise a drainage output 11 that is configured to be arranged in liquid connection with a drain 12.
- a drain valve 13, which is normally open, may be temporarily closed during a replenishing action, as will be further discussed below.
- a safety conduit 14 is extending in a sloping direction away from the collector 6.
- the safety conduit 14 is extending in a downward sloping direction away from the collector 6.
- a downward sloping arrangement of the safety conduit 14 allows gas to rise in a liquid, and thus flow upward and upstream in the safety conduit 14 and via the safety conduit 14 back into the collector 6.
- air may rise in water that is present in the safety conduit 14 an flow back into the collector 6, resulting in the safety conduit 14 being free from air .
- Figure 8 proposes an alternative arrangement, wherein the safety conduit 14 is extending in an upward sloping direction away from the collector 6.
- An additional advantage of the upward sloping safety conduit of Figure 8 is that it will automatically drain liquid after a replenishing action, when the drain valve is opened 13, and preferably is left open.
- a small amount of gas may be trapped inside the safety conduit 14. This may be prevented if the safety conduit 14 is tapered, on the one hand providing a slope along which liquid may flow out of the safety conduit 14, while on the other hand allowing any gas in safety conduit 14 to be directed along the upper wall upstream towards the collector 6.
- a housing 16 supporting one or more than one non-return valve 17 configured to prevent a backflow from the pressurized liquid circulating system 5 through the water hammer arrestor 15 towards the pressurized liquid supply 3;
- FIG. 7A A detailed schematic view of the water hammer arrestor 15 is shown in Figures 7A and 7B.
- Figure 7A water flows from the pressurized liquid supply 2 towards the pressurized liquid circulating system 5, which is the normal and allowed flow direction during a replenishing action.
- the (solenoid operated) shutoff valve 19 suddenly closes, the water flow may suddenly be reversed, causing a pressure peak when it is blocked by the non-return valves 17.
- FIGS 7A and 7B comprise two non-return valves 17, only one non-return valve 17 may be enough under normal circumstances. If only one non-return valve 17 is applied, a body of said single non-return valve 17 defines the housing 16 and the non-return valve 17 may be directly arranged inside a conduit of the replenishing system 1 with the spring 18 restricting the movement of the body of the non-return valve 17 relative to said conduit.
- Restrictors 26 may be arranged to guarantee sufficient pressure between shutoff valve 19, the drain valve 13 and the further backflow preventer 22. In this way, a reliable operation of drain valve 13 is guaranteed, even if a pressure in the pressurized liquid circulating system 5 would be very low, e.g. when filling the pressurized liquid circulating system 5 for the first time with liquid from the pressurized liquid supply 3.
- a further pressure sensor 27 may be arranged near the replenishing output 4.
- a liquid sensor 28 that is configured to detect a flow or a presence of liquid is arranged downstream of drain valve 13, preferably near drainage output 11. This liquid sensor 28 allows safety checks to be performed by the controller 23. After all, if the shutoff valve 19 would malfunction and start to leak, liquid will flow from the pressurized liquid supply 3 via collector 6 and the drain valve 13, which is normally open, towards the drain 12. Likewise, if the further backflow preventer 22 would start to leak, liquid will flow from the pressurized liquid circulating system 5 via the safety conduit 14 and the drain valve 13, which is normally open, towards the drain 12. In this way, a single liquid sensor 28 arranged downstream of the drain valve 13 may be used to detect a leakage in one or both of the shutoff valve 19 and the further backflow preventer 22, and thereby further increase the safety of the replenishing system 1.
- the replenishing system 1 may be arranged in a housing 24, providing an easy-to- use and an easy-to-install replenishing device 25.
- Figures 1 , 3 and 5 The configurations of the main three embodiments are shown in Figures 1 , 3 and 5, that all comprise all relevant reference numbers.
- Figure 1 defines the starting state for the successive steps of a replenishing action that are shown in Figures 2A-2D.
- Figure 3 and Figure 5 define the starting state for the successive steps of a replenishing action that are shown in Figures 4A-4D, and Figures 6A-6D, respectively, that only comprise the relevant references for explaining the operation.
- the starting states of Figures 1 , 3 and 5 is identical, although the configuration of the replenishing system 1 differs.
- the starting state comprises a (normally) closed shutoff valve 19 that shuts off the liquid inside the pressurized liquid supply 3.
- the drain valve 13 is (normally) open, and the liquid inside the pressurized liquid circulating system 5 is below the replenishing output 4, more in particular downstream the further backflow preventer 22.
- the next step for the first embodiment is shown in Figure 2A, and comprises opening of the shutoff valve 19 to allow liquid to flow through the collector 6 of the replenishing system 1.
- Drain valve 13 is still open and therefore liquid flows through collector 6 towards drain 12, also pushing any gas present in the initial air gap between the liquid in the pressurized liquid circulating system 5 and the pressurized liquid supply 3 out of the replenishing system 1.
- the extraction of gas in the step shown in Figure 2A is however at the expense of some loss of liquid that is flushed directly towards the drain 12.
- the second embodiment is very closely related to the first embodiment, but comprises an additional gas accumulator 10 wherein gas may accumulate in the step shown in Figure 4B.
- the operation of the second embodiment is now explained in more detail, with special attention for the differences relative to the first embodiment.
- shutoff valve 19 is opened to allow liquid to flow out of the pressurized liquid supply 3 into the replenishing system 1 , and shortly thereafter shutoff valve 19 is closed again.
- the drain valve 13 is now closed. Consequently, no liquid is lost in the drain 12 anymore.
- the gas present in the initial air gap between the liquid in the pressurized liquid circulating system 5 and the pressurized liquid supply 3 can be given sufficient time, e.g. in the order of a few minutes, to rise inside the collector 6 and consequently accumulate in the gas accumulator 10 that is arranged at the top end 8 of the collector 6. In this way, the gas is effectively extracted out of the liquid before said liquid is allowed to flow into the pressurized liquid circulating system 5 for replenishing thereof.
- the collector 6 may be filled by opening and closing the shutoff valve 19 in a pulsating manner to obtain a step-by-step filling of the collector 6 that may facilitate formation and rising of microbubbles.
- the third preferred embodiment shown in Figure 5 is closely related to the second embodiment, but an aerator 9 is now absent because the pressure builds up inside the gas accumulator 10 due to the extraction of gas out of the liquid may be enough to facilitate a draining of the collector 6. If an aerator 9 is absent, the replenishing system 1 is further simplified and reliability is further improved.
- both the second and the third embodiment may be used in a method of replenishing of the pressurized liquid circulating system 5 in at least two stages by alternating the steps of: allowing liquid to enter the replenishing system 1 , thereby filling the collector 6 that is arranged between the input and a replenishing output 4 of the replenishing system 1 ; and extracting gas out of said liquid in said collector 6, thereby effectively repeating the steps shown in Figures 4A-B and 6A-6B multiple times.
- gas present in the liquid such as gas present in gas-rich water, can be extracted out of the liquid before it is introduced into the pressurized liquid circulating system 5.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2026060A NL2026060B1 (en) | 2020-07-15 | 2020-07-15 | Replenishing system and method of replenishing a liquid into a pressurized liquid circulating system |
PCT/NL2021/050442 WO2022015164A1 (en) | 2020-07-15 | 2021-07-14 | Replenishing system and method of replenishing a liquid into a pressurized liquid circulating system |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4182608A1 true EP4182608A1 (en) | 2023-05-24 |
Family
ID=72802104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21755594.5A Pending EP4182608A1 (en) | 2020-07-15 | 2021-07-14 | Replenishing system and method of replenishing a liquid into a pressurized liquid circulating system |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4182608A1 (en) |
NL (1) | NL2026060B1 (en) |
WO (1) | WO2022015164A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2628110A (en) * | 2023-03-13 | 2024-09-18 | Stuart Turner Ltd | Pressure fill device |
GB2628111A (en) * | 2023-03-13 | 2024-09-18 | Stuart Turner Ltd | Pressure fill device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US947582A (en) * | 1908-12-24 | 1910-01-25 | Ernst Segesvary | Hot-water heating system. |
GB2376290B (en) * | 2001-04-18 | 2004-08-18 | Robert Glyn Jones | Filling means |
DE10329740A1 (en) * | 2003-07-02 | 2005-05-19 | Bernstein, Hans Friedrich | Water treatment plant for removal of dissolved air and lime scale has vacuum chamber and incorporates permanent magnet which can encourage formation of calcium carbonate crystals |
NL2011333C2 (en) * | 2013-08-23 | 2015-02-24 | Flamco Bv | METHOD AND DEVICE DEVICE. |
DE202017005347U1 (en) * | 2017-10-13 | 2017-11-13 | Veolia Water Technologies Deutschland Gmbh | Apparatus for treating heating circuit water with make-up |
GB2576050B (en) * | 2018-08-03 | 2022-05-25 | Stuart Turner Ltd | Pressure fill system |
-
2020
- 2020-07-15 NL NL2026060A patent/NL2026060B1/en active
-
2021
- 2021-07-14 WO PCT/NL2021/050442 patent/WO2022015164A1/en unknown
- 2021-07-14 EP EP21755594.5A patent/EP4182608A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
NL2026060B1 (en) | 2022-03-21 |
WO2022015164A1 (en) | 2022-01-20 |
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